i 1a SA MRL AN IE tt {ate Lys i tah a) : < iret Wis) Uh te 4 Pier ae Ma eee Peete Bt. We eee PP erat Wee kt Nb) Roe ee Gat MNS Mt faeeaya Coe ie 4 abies ae ix a pee 4 EER A eV pn oy acre § easy f Orit Vee 4 ‘ pis ada on evtte ‘dia ‘se ony aa aa NS te eats Mf AMA A hie ‘ Va Vad i ‘fie aie t) eM ‘| " Ht pits Oa are raat hh ile ; nes sane en) el aH A ae cy MANE ib iy Ks Be ; i i bd DRI vy PRN a a a TW hk Uk Bt oe } i ne Don vive? ee 1 ; the yay 4) , avs wii er oy NB Meat ite re ik } a Vn dat eM Ait dea eateih od dtd) TOUS NY ‘ Lana yaaa 475, ht Den V's! ty Soka edd in i Fe pak Ob) a) nit rhs #4 inet on Non Ae i) Pai . iy ; Dall ‘ ey ie 4! ae h “ ce ; i Van a ; i iy A em oe : ae : fi Fee Weeaniwatas et { At Pee oe Fl ae Ain ne i By iy thy May uy Hae a) ak Ved Ae Palo th dot de ii Ay ye ‘A. 1 yey (hp Ape ¢ italy ue) fi f “ 1 await vi aa ON tae nee ibe mh ce a y Hi {4 A Ls i is ae i i, a Ci ig fine Pinte it i i is tee By No \ Ay) on vA UE Pr } shah Aa sa : AON aay Jy ASN i a it 4) ii CG - Mase iui ee hak dos Pind whieids eean Whit fae #4 : Pity ier adhd sa i) oy ued ( Peer Aga i hah Ao 4 Wet f eu ee Ce re i H ee tet Nate Feit 5 ae Ae Nee y) t ; ot itt Uh ard Dent dating. { a ya no clas me i lasee sae eate ee eae hie 7 yy (tas pe ie nies ani yas ken paves My | AGEN Ee baits AY Bee se Mise ae oe: ; St aig : ie ot a ae - pr Reere: “i Be ph ate iia % ae os ssn ay ee =: a eg eetsteitseses ofan “ ney far te) ‘ Ad ee pao Hi Aka a ad he i AOE OG Ack a hat nt ay: ‘ ae in oe aH eee Ait fi My o pay RN SME SONEAN INSTITUTION: UINIAMEID) Siw AANSS, IN AIPIO UN AIG IMO S12 OMe PROCEEDINGS UNITED STATES NATIONAL MUSEUM. Wrolinane lOO PUBLISHED UNDER THE DIRECTION OF THE SMITHSONIAN INSTITUTION. WASHINGTON: GOVERNMENT PRINTING OFFICE. 1900. JAN 117901 : ADVERTISEMENT. The extension of the scope of the National Museum during recent years and the activity of the collectors employed in its interest have caused a great increase in the amount of material in its possession. Many of the objects gathered are of a novel and important character, and serve to throw a new light upon the study of nature and of man. The importance to science of prompt publication of descriptions of this material led to the establishment, in 1878, of the present series of publications, entitled ‘* Proceedings of the United States National Museum,” the distinguishing peculiarity of which is that the articles are published in pamphlet form as fast as completed and in advance of the bound volume. The present volume constitutes the twenty-second of the series. The articles in this series consist: First, of papers prepared by the “scientific corps of the National Museum; secondly, of papers by others, founded upon the collections in the National Museum; and, finally, of facts and memoranda from the correspondence of the Smithsonian Institution. The Bulletin of the National Museum, the publication of which was commenced in 1875, consists of elaborate papers based upon the col- lections of the Museum, reports of expeditions, ete., while the Pro- ceedings facilitate the prompt publication of freshly acquired facts relating to biology, anthropology, and geology, descriptions of restricted groups of animals and plants, the discussion of particular questions relative to the synonomy of species, and the diaries of minor expe- ditions. . Other papers of more general popular interest are printed in the Appendix to the Annual Report. Papers intended for publication in the Proceedings and Bulletin of the National Museum are referred to the Advisory Committee on Pub- lications, composed as follows: Frederick W. True (chairman), Marcus “Benjamin (editor), James KE. Benedict, Otis T. Mason, Leonhard ‘Stejneger, and Lester F. Ward. S. P. LAneLey, Secretary of the Smithsonian Institution. Til TABLE OF CONTENTS. ASHMEAD, WiunutAM H. On the Genera of the Chalcid-flies belonging to the Subfamily Encyrtine.—No. 1202. June New genera: Tetralophidea, Meromyzobia, Tineophoctonus, Henico- pygus, Tetralophiellus, Tetracnemopsis, Habrolepopteryx, Parencyrtus, Chestomorpha, Hemenasius, Hemencyrtus, Coccophoctonus, Rhytido- thorax, Ocencyrtus, Psyllephagus, Coccidencyrtus, Holcencyrtus, Pseudencyrtus, Epiencyrtus, Syrphophagus, Aphidencyrtus, Zoomma, Adelencyrtus, Zarhopalus, Parencyrtus. New species: Tetralophidea bakeri, Meromyzobia flava, M. unifasciata, Anagyrus pallidipes, Anusia neomexicana, Henicopygus subapterus, Tetralophiellus brevicollis, Liothoran melanocera, Berecyntus flori- danus, Parencyrtus brasiliensis, Spheropisthus annulicornis, Sphe- ropisthus auriceps, Chestomorpha biformis, Anasius chapade, Hemenasius confusus, Hemencyrtus herbertii, Coccophoctonus dacty- lopui, Rhytidothoran marlatti, Isodromus niger, Isodromus atriventris, Cerchysius elasmoceri, C. hubbardii, Microterys cincticornis, M. mar- ginatus, Chrysoplatycerus howardi, Zahropalus sheldoni, Coccobius diaspidis, Signiphora nigra, S. australiensis, S. dactylopti, S. noacki, S. unifasciata, S. bifasciata, S. flavopalliata, S. occidentalis, S. mexicuna, S. rhizococci, S. aleyrodis, S. coquilletti, S. aspidioti, S. townsend. CoqguiLLEeTT, D. W. Report on a Collection of Dipterous Insects from Puerto Rico.—No. 1198. May 12, 1900 New genera: Ptilomyia, Stenomicra, Cladocheta. New species: Belvosia luteola, Sarcophaga diversipes, Coenosia vari- cornis, Notiphila virgata, Psilopa mellipes, Hydrellia gilvipes, Ptilomyia enigma, Stenomicra angustala, Cladochexta nebulosa, Drosophila fusca, Anthomysa nigrimana, Gaurax lancifer, Hippelates tener, Oscinis obscura, Desmometopa halteralis, Ophthalmomyia cinerea. Currie, Rorta P. A New Bird of Paradise.—No. 1204. July 7, 1900 New species: Cincinmirus lyogyrus. Page. 325-412 \ Wat CONTENTS. Dati, WittramM H. Synopsis of the Solenide of North America and the Antilles.—No. 1185. October 9, 1899__- New species: Solen mexicanus, Ensis californicus, Tagelus poeyi. GaNnrE, Henry Stewart. Some Neocene Corals of the United States.— No. 1193. April 2051900 S22 =s eee ee eee Hay, O. P. Descriptions of Two New Species of Tortoises from the Tertiary of the United States.—No. 1181. Oc- tober 1, L899. i. 222 Pe ae eee ee ee ea Hay, W. P. Description of Two New Species of Crayfish. — Nos 118%. © October Ld, 1.89 Gx Wisi es eee epee te pe oe Ketioee, Vernon L. A List of the Biting Lice (Mallo- phaga) taken from Birds and Mammals of North America.— No. 1183. October 9) 1899) coe ee ae ee KisHinouryk, K. Contributions to the Natural History of the Commander Islands. XIIIJ.—A New Species of Stalked Meduse, Haliclystus stejnegeri.—No. 1188. December staal Gol ty Me mraiein eat UC oe el bs SSeS be New species: Haliclystus stejnegert. Osrrnorsur, Harry C. A List of the Birds collected by Mr. R. P. Currie in Liberia.—No. 1182. October 9, 1899_ New genera: Horizocerus, Stelgidillas. New species: Anthreptes idius, Frasia prosphora. New subspecies: Dendromus caroli arizelus, Dicrurus modestus atactus. ——. Catalogue of a Collection of Birds from Madagas- car. No, 1197 Ajoril 24a 00 ees ee Sela ae Notes on Birds collected by Dr. W. L. Abbott in Central Asia.—No. 1195. Ajpril 23,.090022225 = New subspecies: Totanus totanus eurhinus. ——~. Notes on Birds from the Cameroons District, West Atrica.—No. 1180; .Octobers(qalis 9 Ome = anne se ie ee New genus: Furillas. —. Notes on Some Birds from Santa Barbara Islands, Coton, TON NSIoS Norell QR. GOO... Page. 107-112 121-123 39-100 25-37 935-948. 205-22 co J1=19 CONTENTS. Ratupun, Mary J. The Decapod Crustaceans of West wien NOOO. May 12, 190085 v2 EL el : New species: Clibanarius cooki. RICHARDSON, Harriet. Description of a New Species of _Idotea from Hakodate Bay, Japan.—No. 1189. February New species: Jdotea japonica. RicumMonp, CHARLES W. Description of a New Bird of the GenusMendrormis:— No: 1200, May 12, 1900 --.-- 2 .- New species: Dendrornis striatigularis. Descriptions of Three New Birds from Lower Site NOs LOI ee Mave TO. 1900 fs es Seek yeaa eS New species: ithopyga anomala, Criniger sordidus, Turdinulus granti. SCHUCHERT, CHARLES. On the Lower Silurian (Trenton) Hauna-ot Battin Wand.—No; 1192.) April 9, 1900... -__- —_ New species: Plasmopora lambu, Porocrinus shawi, Cienodonta carpen- deri, C. baffinensis, C. frobisherensis, Modiolodon arcticus, Whiteavesia symmetricus, Cyrtodonta sillimanensis, Vanuxemia baffinensis, Whitella arcticus, Seelya (?) ( Plethospira?) ulrichi, Holopea arctica, Orthoceras porteri, Orthoceras scalariformis, Cyrtoceras cornulum, C. baffinensis, Oncoceras arcticum, O. tumidwm, Dalmanites (Pterygometopus) goodridgii. New varieties: Orthis (Dinorthis) meedsi var. arctica, Orthoceras olorus var. baffinensis. Smpson, CHARLES TorREY. Synopsis of the Naiades, or 131-134 319-321 143-177 Pearly Fresh-water Mussels.—No. 1205. October 8, 1900_501-1044 New genera: Pseudospatha, Chamberlainia, Pilsbryoconcha, Dromus, Pegias, Arcidens, Shistodesmus, Gibbosula, Cuneopsis, Physunio, Dalliella, Ptychorhynchus, Virgus, Ctencdesma, Rectidens, Lamelli- dens, Pseudavicula, Arcidopsis, Castaliella, Callonaia. New subgenera: Pilea, Caudiculatus, Pletholophus, Crassitesta, Pseu- doin, Ptychoderma, Pressodonta, Rugifera, Bullella, Lamprotula, Discomya, Aurora, Pseudobaphia, Acuticosta, Lamellidens, Trape- zoideus, Spathopsis, Triquetrana, Hyriana, Cyclomya, Levirostris, Pseudomutela. New species: Diplodon leai, Glabaris umbonatus, falsus. New varieties: Truncilla sulcata var. delicata, Lampsilis ligamentinus var. gibbus, Lampsilis texasensis var. compressus, Tritogonia tuber- culata var. obesa, Unio gibbosus var. delicatus, Pleurobema fassinans var. rhomboidea, Cyprogenia irrorata var. pusilla, Quadrula kirtlandi- ana var. minor, Quadrula coccinea var. paupercula, Quadrula gran- ifera var. pusilla. VIII CONTENTS. Srpson, CHarLES TorrEy—Continued. New sections: Lapidosus, Micronaias, Plethobasus, Fusconaia, Cylin- drica, Radiatula, Cafferia, Physunio, Lens, Suborbiculus, Bineurus, Nasus, Obovalis, Cyclomya, Bulloideus, Virgulus. New names: Lampsilis binominatus, Lampsilis lividus, Hyriopsis biala- tus, Quadrula kowangensis, Quadrula similaris, Quadrula ovata, Nodularia jickeli, Lamellidens canefrianus, Trapezoideus peninsularis, Diplodon wagnerianum, Diplodon aureus, Diplodon cuprinus, Spatha lacustris, Glabaris philippianus, Lamellidens marginalis var. hanley?. Smitn, Joun B. New Species of Nocturnal Moths of the Genus Campometra, and Notes.—No. 1184. October 9, WSOO oe ee EE ol Sa rn New species: Campometra bilineata, C. cinetipalpis, C. fraterna, C. minor. A Hundred New Moths of the Family Noctuidee.— NO 120380 July 14 O00) 2 eae wl See New genera: Copibryophila, Selicanis, Anepischetos, Diallagma, Narth- ecophora, Palada, Parora. New species: Arsilonche colorada, Chytonix semifascia, Copibryophila angelica, Setagrotis quebecensis, Setagrotis radiatus, Carneades pug- ionis, C. nevada, C. contagionis, C. loya, C. flaviscapula, C. excogita, C. exvculta, C. nevulus, C. megastigma, C. stigmatalis, C. termessus, C. enteridis, C. atropulverea, C. compressipennis, C. falverina, C. vallus, C. sessile, C. relaxus, C. luteositus, C. tocoye, C. incubita, C. terrenus, C. territorialis, C. fulda, C. itodes, C. laggane, C. ontario, C. testula, C. difformis, C. dakota, C. holoberba, C. kerrvillei, C. terna- rius, C. noctuiformis, C. imtrusa, C. neotelis, C. atrofusca, C. objurgata, C. cariosus, C. malis, C. pindar, C. henrietta, C. vanidicus, C. feemi- nalis, C. nordica, C. factoris, C. cxsius, C. acutifrons, C. selenis, C. laminis, Anytus atristrigatus, Mamestra senatoria, M. rainierti, M. bolteri, M. yakima, M. dilatata, M. florida, M. roseosuffusa, M. griseata, Hadena tapeta, H. luteocinerea, H. mustelina, H. jocasta, FT. tela, Polia extincta, P. acera, P. dispar, P. ochracea, Perigea lucetta, P. cervina, P. texana, P. consors, Caradrina leucorena, Homo- hodena candida, Oncocnemis ciliata, Trichopolia serrata, Leucania velutina, Himella quadristigma, Selicanis cinereola, Anepischetos bipar- lita, Diallagma lutea, Heliodes angelica, H. restrictalis, Narthecophora pulverea, Palada scarletina, Schinia reniformis, S. oculata, S. ciliata, Tripudia balieata, T. luxuriosa, Paroratecana, Synedoida subtermina, Antiblemma minorata, A. fasciata, Bomolocha vega. Srarks, Epwarp CHapin. The Osteological Characters of the Fishes of the Suborder Percesoces.—No. 1179. Octo- ber 7, 1899 The Osteology and Relationship of the Peorcidean Page. LOMSLOS 415-495 1-10 Fish, Dinolestes Lewini.—No. 1186. October 11, 1899__. 113-120 CONTENTS. STEARNS, Ropert E. C. List of Shells collected by Vernon Bailey in Heron and Eagle Lakes, Minnesota, with Notes.— © IN@. MOO, > Ay arerlisre a0 Oe ae cee a ne a Description of a New Variety of Haliotis from Cal- ifornia, with Faunal and Geographical Notes.—No. 1191. AXTOPIL Go, WOOO sess eee eS SN ah aan ee ere ee Vaueuan, T. Waytanp. A New Fossil Species of Caryo- phyllia from California, and a New Genus and Species of Turbinolid from Japan.—No. 1194. April 20, 1900_____- New genus: Levipalifer. New species: Caryophyllia arnoldi, Levipatifer orientalis. OMS 39-142 LIST OF ILLUSTRATIONS. TEXT FIGURES. Page. Carapace, antennal scale, and first abdominal appendages of male of Cambarus [RUOBOS = 32: 4.clb BSG ES SOOO ACPI SEE SS ee een ae ee 121 Carapace, chela, and annulus ventralis of Cambarus clypeatus .........--------- 122 Rela iGh Sis Esta) NCOETI, DC WaSPCCleS. SIGE VICW ta s= 6.2 = sels ee eee cece eee eee 126 Haliclystus stejnegeri, new species. View from the oval side ..............--.--- ey - SACIYSRIS: SCIMQU ibs 52S S RAR OO A ee A IS SEIS re aaa eg ee 128 LE OG: JORDOINUCUE 5B Ss pra Be BO casi RR Sieger Se et les a ge ee a ee 132 Idotea ochotensis .... - EEO LES TI SEE SES I a ar ee 132 Antenna of second pair of Jdotea japonica (a); CDSE of second pair of Jdotea DEMOUOGID ((O)\ os al iene ah OE SONG sets SSN ete Aiea eed lee eine ee 132 Opercular valve of Idotea ochotensis (a); opercular valve of Idotea japonica (b) .. 132 Abdomen of Jdotea japonica (a); abdomen of Jdotea ochotensis (b); abdomen of JV GRBG: POCIMEROTID CO) ies oA So fs is ONS AI SEI ee a a a 133 Leg of second pair of Idotea japonica (a); leg of second pair of Idotea ocho- CUBS (O) cs cheb iS ee grees at eee gta ea Rene ene 133 Picnamiavicwrol Slllmans fossil mount < 2 5.260 eee eae eke 145 A near view of Sillimans fossil mount...--- ia HEE SNe ease ia Sep cea Bag 146 Clibanarius cooki. Front and cephalic appendages, dorsal view...--..--------.- 305 Ghbanorius cook, Lett leg of second pair, outer face. ....2-.+---2--2.2-25----- 305 PLATES. J] Facing page. 1. Superior views of crania of (1) Sphyrena argentea, (2) Atherinopsis californi- CSS». DONS) MACE CTONHMS = tans Hoth ocase teks ada eee ae eae eerete 10 2. Lateral views of crania of (1) Sphyrena argentea, (2) Atherinopsis californien- SIS, BING, (B) WONG GAONHMIS Ts cae eo dco dooS aod CoS we eee eae aaee a eyes 10 3. Posterior views of crania of (1) Sphyrena argentea, (2) Atherinopsis californi- GNSS, (BS) MAGE CFOS BAe BE ANS Aer Ae cee WADE SG SRE AO anes 10 4, JElOchmGnnis. SORIONGHI es Ba eaeacucasac6 soso sb 2 bone ob aoe eee eee eee 24 G. AlGRGROMUCHODIS WAG NCH SS NS BE Geos ae a BBO e Se Ge aes Ae ee eee rer 24 PeNCOUUT A NOO-LOOm, binds (Centropus senegalensis) == 622 92.25. 522.22 2222.2 38 SUPE ulOcevilew OlacramiumuolMDinolestes lenin; 9.352282. 52 120 Omeateraleviewaor cramiumyoreMimolestes lewis. 8252282524522. oo ee 120 HieePosterion wwew ot cranium’ of Dinolestes lewint | .-2-..---22--5--2--5-5-65+ 120 WL, LD UCU ASIAS UCU SE Cs less ies es aS AE ae a ei en ne a 120 12, Fossils itzoan Swllbtaneing) mooi oss bau eecs ss bse ee tw eadooesaguseceedeusaeee 178 ibanelecypodsmrom sillimanc mountM ess sece 4. het ee 178 Ee Cepnalopods arom, silllmansmOUmt!sacssssei 2-6 see eel ee eee 178 ibmNCOceMe-condic or taenWimibedystabes= 9-40-2425 2e- seca le ace oes Sse se 198 GRIN wat um oimolidhcorall see iarytes n= ee eke a ee Stee icine ea 204 Pew Cy ndmolymaracisewee sts ee Bai sae e Y Ne Ss ere isl tc 500 18. Map showing the distribution of pearly fresh-water mussels -_......------ 504 ERRATA. Page 509, line 21, for varicosa read cicatricosa. Page 516, before Heterogenze insert Exobranchie. Page 548, line 36, Unio striatus Sowerby should be preceded by a mark of interrogation. Page 559, line 6 from the bottom, for L. prevostianus read U. prevostianus. Page 591, line 3, for Lampsilis read Medionidus. Page 648, omit 8th and 9th lines from the bottom. Page 719, Unio striatulus Lea and U. amabilis Lea should be placed in the Argenteus group of Pleurobema. Page 760, last line, for bigbyana read bigbyensis. Page 766, line 6 om bottom, for poultice read heros. Page 802, omit line 8. Page 806, line 19, for eequitoria read eequatoria. Page 823, lines 10 and 11, for equitoria read sequatoria. Page 825, omit lines 8 and 9. Page 851, line 27, for incertus read murinus. Page 862, omit line 31. Page 894, ont line 28. Page 906, 13th and following lines, for Chelidoneura read Chelidonura. Page 933, ont lines 16 and 17. XII THE OSTEOLOGICAL CHARACTERS OF THE FISHES OF THE SUBORDER PERCESOCES. By EDWIN CHAPIN STARKS, Assistant Professor in the Department of Biology and Curator of the Museum, University of Washington, Seattle, Washington. A study of the skeletons of several representatives of the families Atherinide, Mugilide, and Sphyrenidie, which are grouped together under the suborder Percesoces, reveals the fact that they are not so closely allied to each other as their external similarity would lead one to suppose. The specimens from which my observations were made are adult examples of Atherinopsis califormensis, Menidia notata, Mugil cephalus, and Sphyrena argentea. In examining the crania of these species attention is attracted at once to the fact that in all of them the epiotics are developed into long, thin processes which divide into more or less bristlelike filaments. There is little else in purely internal characters whereby to differen- tiate these families as a group from other Acanthopteri. In order to So differentiate them we must turn to the well-known external charac- ters—a spinous dorsal in conjunction with the abdominal ventral fins, high pectoral fins, and unarmed opercles. If, however, we eliminate the Sphyrenide (which, on account of its fanglike teeth, set in deep sockets, its separate superior pharyngeals of third and fourth branchial arches, its lack of parapophyses on ante- rior vertebrae, and other characters, we may well be justified in doing) and place it in a separate superfamily coordinate with that in which we place the Mugilide and Atherinids, we shall then have remaining a more compact group, notwithstanding the great difference in number of vertebre in the two tamilies of which it is composed. In it we find the parapophyses developed on all the abdominal ver- tebre, the anterior neural spines flattened, wide and thin, the supra- clavicle very small, the superior pharyngeals of each side of the third and fourth branchial arches anchylosed, and the teeth small, not fang- like and set in sockets. PROCEEDINGS U. S. NATIONAL Museum, VoL. XXII—No. 1179. Proc. N. M. vol. xxii 1 1 aD PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. DIAGNOSIS OF THE SUBORDER PERCESOCES. & Two dorsal fins, the first spinous and more or less remote from the second; ventral fins abdominal, with 1 spine and 5 rays; third and fourth superior pharyngeals of each side separate or anchylosed; lower — pharyngeals separate; pectorals elevated, nearly on a level with upper part of clavicle; epiotics of adult produced backward and more or less divided into bristlelike filaments; myodome present, opened or closed posteriorly; opercles unarmed; parietals separated by supra- occipital; supraoccipital crest developed posteriorly, not extending above level of balance of cranium; postclavicle of superior and inferior parts; anterior interhemal not differentiated; epipleurals present; coronoid bone present;' suborbital ring without suborbital shelf. DIAGNOSIS OF THE SUPERFAMILY ATHERINOIDEA. Cleft of mouth not wide; teeth, when present, small, not set in sock- ets; maxillary without supplemental bone; third and fourth superior pharyngeals of each side anchylosed; supraclavicle reduced in size; lower limb of posttemporal attached to opisthotic by ligament or suture; exoccipitals not meeting above basioccipital; alisphenoids not meet- ing; ethmoid normal, not overlying prefrontals and vomer or extend- ing to lateral edge of rostrum; anterior neural spines laterally tlattened ; parapophyses developed on all abdominal vertebre. DIAGNOSIS OF THE FAMILY ATHERINIDA. Lower limb of post-temporal attached to opisthotic by ligament; basisphenoid developed; myodome opening to exterior posteriorly; region about foramen magnum not produced; superior pharyngeals typical in shape, bearing teeth; vertebree numerous, from 45 to 52; first dorsal with from 3 to 8 spines; anal with 1 spine. DIAGNOSIS OF THE FAMILY MUGILIDZ. Lower limb of post-temporal attached to cranium by dentate suture; basisphenoid absent; myodome not opening to exterior posteriorly; foramen magnum region produced; superior pharyngeals of complex shape, not bearing teeth; vertebre few in number, about 24; first dorsal with about 4 spines; anal with 2 or 3 spines. ‘This character seems to have been made too much of by the systematists and not enough of by the anatomists. Whether it is homologous with the coronoid as it occurs in some reptiles, or is one of the osteological peculiarities common to fishes, or whether it is developed with age, being the ossified end of the ligament that is attached to it, I will not attempt to say with the material at hand. The last sup- position seems to be the least tenable, since the ossification is not a gradual transi- tion from cartilage to bone, as we would expect in that case, but takes the form of a distinct bone larger than the end of the ligament. I find it present in nearly every species examined (my material being adult examples), among them the following miscellaneous genera: Amiurus, Cyprinus, Lucius, Alosa, Holocentrus, Pomoxys, Lobotes, Roccus, Caranx, Archosargus, Neomeanis, Tautoga, Pomatomus, Rachycentron, Scorpe- nichthys, Lopholatilus, Melanogrammus, and Gadus. NO. 1179. CHARACTERS OF PERCESOCES—STARKS. 3 DIAGNOSIS OF THE SUPERFAMILY SPHYRANOIDEA. .Cleft of mouth wide; teeth fanglike, some of them set in deep sock- ets, large teeth on palatines; maxillary with supplemental bone; third and fourth superior pharyngeals separate; supraclavicle not reduced in size; lower limb of post-temporal not attached to opisthotic by suture; exoccipitals not meeting above basioccipital; alisphenoids meeting; ethmoid a thin plate, entirely supeiior, extending to and forming edge of rostrum; anterior neural spines normal; parapophyses not developed on anterior vertebra. The characters of the family Sphyrenide are included in the fore- going diagnosis. OSTEOLOGY OF ATHERINOPSIS CALIFORNIENSIS. Exoccipitals not meeting above basioccipital, thus leaving the latter to form floor of foramen magnum. Basioccipital and exoccipitals not much produced posteriorly. Supraoccipital crest not projecting above superior level of skull; its posterior edge somewhat broken up and ragged. Parietals widely separated by supraoccipital. Epiotics produced backward, spreading out into thin, flat, horizontal processes, which are much divided and ragged, though scarcely “ bristle- like,” asin Mugil and Sphyrena. ~ Opisthotics with a projection to which lower limb of post-temporal is attached by ligament. — Pteroties extending back as thin horizontal shelves of bone. Sphenotics weli developed, their front edge continuous with edge of frontals. Alisphenoids not meeting. Anterior opening into brain case large. Basisphenoid well developed, wholly in front of basis cranii and not continuous with it. Supported directly by prootics and slightly by alisphenoids. Its process strongly joined to parasphenoid, extending posteriorly into myodome. Myodome large, opening to the exterior at its posterior end through a small foramen at end of parasphenoid. Vomer convex on lower surface; its anterior edge produced at the middle; trilobate in the young and pierced by a network of holes. Hthmoid wholly superior, being a simple, flat, thin bone supported at its anterior edge by vomer and sending some slender filaments of bone under frontals. The large space beneath it is filled by cartilage. Frontals extending well back over about half of superior portion of supraoccipital. Metapterygoid united to hyomandibular by a deeply dentate suture. Pterygoid very much reduced in size—a mere splint of bone. Bones of opercular apparatus large. Opercular sending a spine forward in front of hyomandibular. 4 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. Dentary without the typical cavity into which the meckelian cartilage and end of articular runs anteriorly. Angular present. Coronoid bone present. Post-temporal not especially firmly attached. Upper limb attached to base of epiotic process, the outer side rather loosely to pterotic proc- ess. The thin, flat lower limb attached to process from opisthotic by a short ligament. Supraclavicle very short, its upper end scarcely reaching above upper end of clavicle. Hypercoracoid placed high on clavicle. Its foramen as described under Mugil. Hypercoracoid at upper end more broadly joined to clavicle than that of Mugil. Its lower end attached to a high median vertical wing between inner and outer edge of clavicle. Actinosts very short, two joined to each the hypocoracoid and hyper- coracoid. Two or fines upper rays of pector al fin working directly on hypercoracoid. Postelavicle cousisting of a superior and inferior part. Pelvic bones higher than wide. A’ spinelike process sent upward from the outer edge of each of them. Interneurals of spinous dorsal compressed into thin plates without descending spines between the neural spines. First and second inter- neurals not fused. eS Interneurals of soft dorsal with spines between the neural spines as usual. In front of them an auxiliary interneural is attached. Front of anal fin free under abdominal cavity. Interhemals subequal, growing slightly longer anteriorly. The first not differentiated. Three basibranchials present, united to each other by sutures. Suspensory pharyngeal! of first branchial arch present. Second arch? with a small toothed superior pharyngeal. Superior pharyngealsof third and fourth arches fused into a large ellip- tical bone. A transverse groove or suture is present, probably indicat- ing separate pharyngeals of the third and fourth arches in the young. Hyoid apparatus typical. Branchiostegals six; all attached to outer surface of ivi Nasals present; thin and short. Suborbital ring apparently not complete, one bone besides preorbital being at anterior end and one at posterior, while directly beneath eye there are no, bones in evidence. Premaxillary wide at its lower end, while maxillary is subequal throughout its length, which is a transposition of the usnal condition. Maxillary without supplemental bone. ieee so called Necanee its Geinethon is peel that a suspending the iene arches from the cranium. It is typically styloform and toothless. 2One side only of branchial arches considered in describing superior pharyngeals. No. 1179. CHARACTERS OF PERCESOCES—STARKS. 5 Vertebre, in number, with hypural, 52. In another specimen, 50. Impossible to draw a line between abdominal and caudal vertebre. Twenty-fifth and succeeding posterior vertebrie with an arch between each pair of parapophyses, behind which parapophyses gradually become longer, thinner, and wider, till at the thirty-fourth their tips approach each other and touch, forming a gradually decreasing tunnel continued to the forty-first, where it becomes obsolete. This tunnel is probably for reception of posterior end of air bladder. Only those vertebre from the forty-first backward have typical hzmal spines. Anterior neural spines, flattened into thin plates, much as in Mugil. Parapophyses on all abdominal vertebre, including atlas. Subequal in size and directed at about the same angle. Superior anterior and posterior parapophyses normally developed; not with spines, as in Mugil. Inferior posterior zygapophyses developed on a few of the middle vertebre. Hypural assisted in supporting caudal fin by spines of next preced- ing four or five vertebre. Ribs transversely flattened. Epipleurals present, typical. OSTEOLOGY OF MUGIL CEPHALUS. Cranium short and broad, its upper surface smooth and convex. Exoccipitals not meeting above basioccipitals, thus leaving the latter to form floor of foramen magnum. Exoccipitals and basioccipitals produced backward, elongating the foramen magnum tunnel-like. Supraoccipital crest produced backward, somewhat broken up or ragged posteriorly. Not extending above superior level of skull. Parietals widely separated by supraoccipital. Epiotics produced far backward, spreading out into thin, flat, hori- zontal processes which divide into bristlelike filaments. Opisthotics sending back a rod of boue to which lower limb of post- temporal is united by suture. Pterotics extending backward farther than usual as thin, fiat projec- tions. Sphenoties well developed, forming large lateral projections from side of cranium. A short distance in front of them the frontals are later- ally produced, leaving deep conspicuous notches over orbital region. Alisphenoids not meeting. Anterior opening into brain case large. Basisphenoid absent. Myodome present, not opening to exterior at its posterior end. The anterior edge of basis cranii some distance back from mouth of anterior opening into brain case. Yomer divided anteriorly into two prominent horns by a deep rounded notch. 6 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Ethmoid almost directly above vomer, similarly indented, but by a shallower notch. Frontals not extending very far back, exposing underlying supra- occipital nearly to its anterior end, which reaches about middle of cranium. Pterygoid reduced in size. Suspensorium otherwise typical. Bones of opercular apparatus all large. Opercular rolled over toward cranium at upper edge. Cavity in dentary for reception of articular not large. Coronoid bone well developed. Angular present. Dentary becoming slender anteriorly. Post-temporal very firmly attached. Its upper fork attached broadly to a rough surface at base of epiotic process. Lower fork attached to process of opisthotic by very deeply dentate suture, forming an integral rod of nearly uniform size from opisthotic to distal end of posttemporal. Suture at about middle of rod. At posterior end of posttemporal at base of forks the long pterotic process is strongly fastened, thus forming a tripod attachment for shoulder girdle, mak- ing post-temporal wholly immovable. Supraclavicle so small that it admits upper end of clavicle to nearly reach to a level with lower end of posttemporal. Clavicle with a downward-hooked process on inner anterior edge. Hypercoracoid placed high on clavicle. Its foramen, though wholly contained within hypercoracoid, is so near its forward edge that it deeply notches edge of overlying clavicle. Hypocoracoid falciform, Its inner upper corner but slightly touch- ing clavicle, thence curving quickly away and only weakly attaching to it at its long lower end. Actinosts short; three joined to hypercoracoid, one to hypocoracoid. Pectoral fin placed high on shoulder girdle, two or three of its upper rays working directly on hypercoracoid. Postelavicle of two pieces. The superior typically lamellate, the inferior rodlike, large, and strongly curved inward. From the under side of the pubic bones near their union each sends a long slender bone forward, which tapers to a hairlike process. First interneural of spinous dorsal enlarged and divided into two spines, though supporting only one dorsal spine. Interneurals of soft dorsal slender and subequal. First interhzemal of anal enlarged very slightly, though not elon- gated, and supporting two anal spines. Interhemals graduated from behind forward. Front of anal not free under abdomen. In front of spinous dorsal are two peculiar supernumerary interneurals composed of two long, slender, contiguous splints of bone placed hori- zoutally. At the middle of each a fork is sent down between the Second and third and fourth and fifth neural spines respectively. No. 1179. CHARACTERS OF PERCESOCES—STARKS. ff Apparently but two basi branchials ossified; both in front of third areh, the hypobranchials of which meet on a median line. Suspensory pharyngeal represented only by a nodule of cartilage. First epibranchial typical. The three succeeding ones of complex shape, somewhat turned back upon themselves with many curves and processes. To superior part of second epibranéhial a rather thick triangular superior pharyngeal is attached. Superior! to all else is a large pharyngobranchial of very complex shape. Itis attached to and above the last three epibranchials and even to and above pharyngobranchial of second arch. It is doubtless the anchylosed pharyngobranchials of third and fourth arches. Tor ease of describing, it may be said to consist of a superior and an inferior part. The inferior, to which the epibranchials are attached, runs straight back to last arch. Springing from its anterior end a thin, imperforate, saucer-shaped superior bone arches widely over it, project- ing both laterally and posteriorly. This upper part is further supported at its middle, umbrellalike, by a ray of bone sent up from posterior end of inferior part. Hyoid apparatus typical in number and arrangement of elements. Branchiostegals six, two attached to epihyal, four to ceratohyal; all attached to outer surface of hyoid. Maxillary and premaxillary rather narrow and slight. Premaxillary widened at lower end, and without supplemental bone. Respective sides of maxillary rather widely separated by unusually wide processes of premaxillary sent backward at its symphysis. Nasals short and quadrangular in shape. Suborbitals forming a narrow ring, through which is the usual sensory canal. Preorbital triangular, its lower edge sharply dentate. Vertebral formula: Abdominal 11, caudal 12, which, with the hypural, number 24. First five vertebre with neural spines flattened laterally and forming a more or less continuous crest. Parapophyses very large; wide and thin at the edges. Developed on all abdominal vertebrae, growing gradually larger and more nearly horizontal anteriorly, until the third is reached, thence scarcely dimin- ishing in size to the atlas. : A process developed from each anterior zygapophysis, which is anky- losed with its fellow of the opposite side, forming an arch over neural cord, and extending obliquely forward to neural spine. A spine developed from each posterior zygapophysis pointing obliquely backward and overlapping outer edge of that from anterior zy gapophysis. 1The arches described as straightened out for examination, not as in natural posi- tion with the supericr pharyngeals turned downward. 8 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Inferior zygapophyses developed as large spines, each anterior spine the longer and pointing obliquely forward; each posterior pointing obliquely backward at right angles, meeting it at its middle. Hypural assisted in supporting caudal fin by spines of two preceding vertebre and two auxiliary spines substituting neural spine of first preceding vertebra. First rib very small, placed’ on second vertebra. Second, two or three times as long and abruptly widened at its upper end. Others normal. Four epipleurals only present. First placed on first vertebra, unac- companied by arib. Other three on first three ribs. OSTEOLOGY OF SPHYRAINA ARGENTEA. Cranium elongate and narrow, forming a narrow isosceles triangle, as viewed from above. Supraoccipital scarcely interposed between exoccipitals. Its crest extending far back as a thin plate of bone, dividing into numerous bristle-like filaments. Exoccipitals meeting above basioccipital, completely surrounding foramen magnum. Exoccipitals and basioccipital produced backward, elongating fora- men magnum, which runs tunnel-like into brain cavity. Parietals widely separated by supraoccipital, their posterior ends overlapping epioties. Epiotics extending backward in bristle-like filaments similar to supraoccipital. Upper limb of posttemporal firmly attached to upper part of epiotic process rather than to main part of bone. Opisthotics sending a spinelike process backward, to base of which lower limb of post-temporal rather loosely attaches itself by ligament. Prootics produced anteriorly in a spinelike process. Sphenotics large, separated from frontal at middle portion by a large foramen. Alisphenoids meeting at their upper edges. They restrict the anterior opening into brain case to a comparatively small foramen. Basisphenoid present, a foramen between it and basis cranii, its descending process reaching to and broadly attaching to parasphenoid. Myodome present, not opening to exterior at posterior end. Vrontals elongate, covering two-thirds of length of skull. Prefrontals very elongate, the olfactory foramen within their poste- rior fourth. Ethmoid entirely superior in position, overlying anterior part of pre- frontals and posterior part of vomer, forming edge of rostrum between prefrontals and vomer. Nasals long, channeled rods of bone fully one third length of cranium firmly attached in a groove between frontals and prefrontals and con- tinued along upper part of ethmoid and vomer. No. 1178. CHARACTERS OF PERCESOCES—STALKS. 8) Suborbital ring formed of a very large preorbital and the usual chain of small suborbitals tunneled with sensory canal. Bones of suspensorium and opercular apparatus typical in their rela- tive positions. Palatine process very strong and heavy, its lower edge sharp, sup- porting a single row of teeth. Metapterygoid rather thick, united by suture for whole length of its attachment with hyomandibular. No foramen between. Symplectic attached to metapterygoid at its upper end by subdentate suture. Angular present, rather small. Coronoid bone well developed. Maxillary and premaxillary so attached to each other as to allow little play between them. Maxillary with a well developed supplemental bone which bears a knob on its posterior edge. Teeth of palatine and jaws, except anterior teeth of lower jaw and premaxillary, set deep in grooves, which are subdivided for each tooth forming semisockets.' The exceptions noted isolated and set in true sockets. The rooted portion of each tooth as great or greater than the exposed portion. Clavicle turning forward at an angle slightly above pectoral fin. Pectoral superior in position, its upper ray working directly npon hypercoracoid. Actinosts moderate in size, all attached to hypercoracoid except half of lower one. Hypercoracoid barely touching clavicle at its upper end, arching widely away from it and strongly attaching to it at its lower end. At its upper superior portion a process projects backward past end of actinosts. Postclavicle consisting of two parts. Supraclavicle of moderate size. Hypohyals united to ceratohyals by sutures. Glossohyal rod-like, rather stout and elongate. Urohyal divided into three long processes extending backward beyond posterior ends of branchiostegals. These subdivided into bristle-like filaments. Branchiostegals seven in number. Basibranchials three in number, the anterior one in front of that of first arch, the posterior ones supporting both second and third arches. Superior pharyngeals four, including the moderate suspensory pharyngeal, the two posterior forming an elongate ovate patch, but not anchylosed. First two interneurals of spinous dorsal not anchylosed, as is com- monly the case. ‘Somewhat similar to the posterior teeth in the jaws of a crocodile. 10 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Interhemals evenly graduated in length from behind forward, the anterior one not differentiated. Vertebral formula: Abdominal, 13; caudal, 11, which, with the hypu- ral, are 24. ; Atlas short, the succeeding vertebrie elongate and rather smooth, without deep pits, and much constricted in the middle. Anterior and posterior zygapophyses well developed. Parapophyses not developed anterior to ninth vertebra. Evidence apparent of hypural having been developed from two pos- terior vertebre. Hypural assisted in bearing caudal fin by spines from two preceding vertebra and some detached auxiliary spines taking the place of neural spine of first preceding vertebra. . Lateral processes from hypural large and flat, forming a keel. Last pair of ribs firmly anchylosed with last pair of parapophyses. Epipleurals present. EXPLANATION OF PLATES. SIGNIFICANCE OF REFERENCE LETTERS USED ON PLATES. [From drawings by Chloe Lesley Starks. } als. Alisphenoid. pas. Parasphenoid. bo. Basioccipital. p. Parietal. bs. Basisphenoid. pro. Prootie. epo. UEpiotie. pto. Pterotic. e. Ethmoid. pf. Prefrontal. eo. Exoccipital. spo. Sphenotic. fr. Frontal. so. Supraoccipital. na. Nasal. v. Vomer. ; opo. Opisthotic. PLATE I. Superior views of the crania of Sphyrena argentea, Atherinopsis californiensis, and Mugil cephalus. PuatE II. Lateral views of the crania of Sphyrewna argentea, Atherinopsis californiensis, and Mugil cephalus. Pirate III. Posterior views of the crania of Sphyrena argentea, Atherinopsis californiensis, and Mugil cephalus. : | Pies PROCEEDINGS, VOL. XxXIl NATIONAL MUSEUM U. S. “O| a9Vd 33S aLlvid AO NOILVNV1dx3 4YO4 “SNTVHd39 TIONIA (€) GNV ‘SISNSINYOSI1VO SISMAONINSHLY (2) ‘VALNADUV VNIYAHdS (Lt) JO VINVYD 4O SMAIA YHOINSdNS nm =—N lo ;- ZEEE M pes a E Sz aS M T \ 2 <7 S Shh ba gn en U. S. NATIONAL MUSEUM PROCEEDINGS, VOL. XXII PL. II — = SSS 7 SSS > ——_— = SS a LATERAL VIEWS OF CRANIA OF (1) SPHYRAENA ARGENTEA, (2) ATHERINOPSIS CALIFORNIENSIS, AND (3) MUGIL CEPHALUS. FOR EXPLANATION OF PLATE SEE PAGE 10. Palo Bay U. S. NATIONAL MUSEUM PROCEEDINGS, VOL. XXII PL. Ill SS ~ = N POSTERIOR VIEWS OF CRANIA OF (1) SPHYRAENA ARGENTEA, (2) ATHERINOPSIS CALIFORNIENSIS, AND (3) MUGIL CEPHALUS. FOR EXPLANATION OF PLATE SEE PAGE 10. NOTES ON BIRDS FROM THE CAMEROONS DISTRICT, WEST AFRICA. By Harry C. OBERHOLSER, Assistant Biologist, Department of Agriculture. The U.S. National Museum has recently acquired a small collection of birds made by Mr. G. L. Bates in the Cameroons District of West Africa. At the request of the curator of the Division of Birds the writer has prepared the following report upon this collection which, though it contains no novelties, comprises several species of consider- able interest; and the data from the labels has been supplemented by such critical remarks upon the specimens as the circumstances appear to make desirable, including the creation of a new genus for the recep- tion of the species commonly known as Andropadus virens. The 59 specimens are referable to 32 species, and are nearly all from Efulen—or Ebfulla, as it is called on German maps—in the Njondo River region, about 100 miles inland. Only two specimens, one each of Ceratogymna atrata and Actitis hypoleuca, are from elsewhere, they coming from Batanga on the coast. The dates of collecting range from May 30 to August 3, but a large proportion of the specimens were taken in June. Family SCOLOPACID &. ACTITIS HYPOLEUCA (Linnzus). Tringa hypoleucos LINNEUS, Syst. Nat., 10th ed., I, 1758, p. 149. Actilis hypoleucos ILLIGER, Prodr., 1811, p. 262. One specimen in worn plumage, taken at Batanga, August 3, 1895. Family TRERONID&. VINAGO CALVA (Temminck and Knip). Columba calva TEMMINCK and KnipP, Pig., I, 1808, p. 35, pl. 7. Vinago calva STEPHENS, Gen. Zool., XI, Pt. 1, 1819, p. 117. One male, undoubtedly adult, although the gray collar on the hind neck is rather indistinct, being strongly tinged with the olive green of the upper surface. PROCEEDINGS U. S. NATIONAL Museum, VOL. XXII—No. 1180. 11 Ly PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII Family ALCEDINID. HALCYON MALIMBICUS (Shaw). Alcedo malimbica SHAW, Gen. Zool., VIII, 1811, p. 66. Halcyon malimbica Cassin, Cat. Haleyon. Phila. Mus., 1852, p. 8. One adult male. Although Dr. Reichenow does not include’ this form among the birds of the Cameroons District, there seems to be little doubt of the correct identification of the present specimen, as it agrees perfectly with the plate and description given by Dr. Sharpe.’ The present locality must be quite or at least very near the northern limit of the range of malimbicus, which probably passes thence into Halcyon malimbicus forbesi, the latter occupying the region from at least the Cameroons Mountains northward to Sierra Leone, and in turn replaced in Senegambia by Haicyon malimbicus torquatus. HALCYON SENEGALENSIS (Linnzus). Alcedo senegalensis LINN&US, Syst. Nat., 12th ed., I, 1766, p. 180. Halcyon senegalensis SwAINson, Birds W. Afr., II, 1837, p. 97. Two specimens, one of which, though nearly adult, still retains some indications of immature plumage. The maxilla is red, save for a dusky spot on each side at the base and a narrow blackish line along the apical two-thirds of the culmen. The flanks are distinctly barred with dusky; the sides of the head, including the superciliary region, together with the nape and occiput, have a conspicuous wash of bluish, and the whole upper surface, particularly the anterior portion, is darker and duller than in the fully adult. Family BUCEKROTID 48. LOPHOCEROS FASCIATUS (Shaw). Bueeros fasciatus SHAW, Gen. Zool., VIII, 1811, p. 34. Lophoceros fasciatus CABANIS and HEINE, Mus. Hein., II, 1860, p. 168. A pair of adult birds is in the collection. The greater size of the male is very conspicuous in the bill. CERATOGYMNA ATRATA (Temminck). Buceros atratus TEMMINCK, PI. Col., II, 1834, p. 69, pl. 558. Ceratogymna atrata SHELLEY, Ibis, 1888, p. 51. One specimen, a fine adult male, with molt not quite completed. This bird was shot in the forest 10 miles east of Batanga. 1 Journ. fiir Ornith., 1896, p. 55. 2Cat. Birds Brit. Mus., XVII, 1892, p. 247, pl. 6, fig. 3. NO, 1180. BIRDS FROM WEST AFRICA—OBERHOLSER. 13 Family CAPITONID4. GYMNOBUCCO CALVUS (Lafresnaye). Bueco calvus LAFRESNAYE, Rev. Zool., 1841, p. 241. Gymnobucco calvus BONAPARTE, Consp. Avium, I, 1850, p. 141. Two specimens, male and female, June 11, 1895. Both of these indi- viduals are typical of the so-called Gymnobucco peli, and are undoubt- edly adults. From examination of these and from comparison with an adult specimen of true G. calvus from Fantee, the writer is very strongly inclined to consider Dr. Sharpe correct in his opinion of the specific distinctness of G. peli. That they are sexes of the same species seems unlikely if any reliance is to be placed upon the sexing of collectors. The examples at hand indicate that calvus is in all its dimensions a decidedly larger bird than peli, this difference of dimensions conspicu- ous in the bill. It lacks entirely the tufts of nasal bristles so conspicu- ous in peli, and the scattered bristles on the top of the head are much fewer in number. The number of specimens at present available is too limited, however, to warrant a definite opinion, and final disposition of the question must necessarily be deferred until a sufficient series prop- erly sexed can be brought together. TRICHOLAZMA GABONENSE Shelley. Tricholema gabonense SHELLEY, Bull. Brit. Orn. Club, XXIX, October, 1895, p. iii. An adult female of this little known but very distinct species is con- tained in the present collection. As no detailed description of the species appears to have been published, the following, taken from this example, is added: Top of head black, thickly spotted with greenish yellow; remainder of upper parts, including wings and tail, sepia brown; the back -and wing-coverts with roundish markings of greenish yellow; wing-quills (excepting outer primaries), tail- feathers, and upper tail-coverts margined externally with greenish yellow, this most golden on the wings, most greenish on the tail-coverts; sides of head black mottled with white; throat white, the feathers with shaft markings of brownish black; rest of lower parts dull yellowish green, the feathers of the jugulum with narrow black shaft lines and hair-like tips; the breast and abdomen with roundish spots of dark brown, these expanding into bars posteriorly. Family PICID AS. MESOPICOS XANTHOLOPHUS Hargitt. Dendropicus cantholophus HARGITT, Ibis, 1883, p. 173. Mesopicus xantholophus HARGItTT, Ibis, 1883, p. 421. One specimen of this rare species is contained in the collection. Although sexed as a female, the yellow feathers on the occiput seem to indicate its being a male. Otherwise it is apparently typical, though its measurements are rather small. 14 PROCEEDINGS OF THE NATIONAL MUSEUM. Vou.xx | DENDROMUS PERMISTUS (Reichenow). Picus (Campothera) permistus REICHENOW, Journ. fiir Orn., 1876, p. 97. Campethera permista SHARPE and BUVIER, Bull. Soc. Zool. France, 1876, p. 312. The single example is an adult male. It differs from an Angola female in the U. 8S. National Museum by reason of its brighter green upper surface and deeper color below—the latter particularly noticeable posteriorly—and by its somewhat smaller size. Should a satisfactory series prove these differences to be sufficiently constant, the Cameroons form, provisionally established on smaller .size by Dr. Sjostedt,' must be known as Dendromus permistus pumilus. The generic term Dendromus Swainson, 1837, pmirad nies by several years Campethera Gray, 1841, and should be used for the group which in current usage passes under the name Campothera. There is no more reason for rejecting Dendromus on the ground of a former Dendromys? than there would be to refuse Pica on account of a previous Prcus, for Dendromus is derived from dévdpov and Spopos, while Dendromys comes from dévdpor and js, the terminal elements involving more than mere grammatical endings, although as latinized they differ only in a single letter. Family TKOGONID 4. APALODERMA NARINA (Levaillant). Couroucou narina LEVAILLANT, Ois. d’Afr., V, 1806, p. 73. Apaloderma narina SWAINSON, Classif. Birds, II, 1837, p. 337. The single specimen is an immature male, and differs from all the other examples of this form with which it has been compared in the color of the upper surface, which is clear grass-green, with scarcely a trace of the bronzy tinge so evident in ordinary specimens. Otherwise it is apparently typical, the wing-coverts being broadly edged with green, thus showing no approach to constantia. Family PYCNONOTID 4.’ BLEDA‘ ICTERINA (Bonaparte). Trichophorus icterinus BONAPARTE, Consp. Avium, I, 1850, p. 262 (ex Temminck, manuscript). One aduit male, in breeding plumage. This species is commonly placed in the genus Criniger, and by Captain Shelley® in Pyrrhurus, but in pattern of coloration, as well as in structural characters, it is so ‘Ornith. Monatsberichte, II, 1894, p. 35. 2Smith, Zool. Journ., [V, 1829, p. 439. 5 Brachypodide is certainly untenable as a family name for this group if the genus Brachypodius, upon which it is founded, be considered a synonym of Microtarsus. Even if Brachypodius is distinct, the proper designation for the family is apparently Pycnonotide, since it seems to have been the name first used. 4 For the use of this name, see Richmond, Auk., XVI, April, 1899, p. 183. > Birds of Africa, 1, 1896, p. 64. NO. 1180. BIRDS FROM WEST AFRICA—OBERHOLSER. 15 per fect | a miniature of Xenocichla (= Bleda) syndactyla that Cassin apparently was quite right in calling it a Xenocichla (— Bleda). With regard to the specific name, however, it seems to the present writer unnecessary to reject icterina of Bonaparte for tricolor of Cassin solely on account of a previous icterica in the same genus; for the two names are sufficiently distinct, both actually and etymologically, not to cause any serious confusion. EURILLAS,! new genus. Chars. gen.— Genus generi “Andropadus” dicto simile, a quo differt rostro latiore et depressiore, naribus rotundatis. Type.—Andropadus virens Cassin. The type of the genus Andropadus is A. importunus (Vieillot), from which A. virens differs so much in structural characters that its generic separation seems necessary. The very much broader, more depressed bill, oval instead of slit-like nostrils, are very distinctive. The tomia are scarcely or not at all incurved, and the closed bill is thus without the groove which is so conspicuous along the commissure of Andropadus importunus. The outline of the culmen is nearly straight until near the tip, while in Andropadus it is curved almost from the base. The rictal bristles are also more strongly developed in Eurillas. From other related genera, except Stelgidillas,’ Eurillas may easily be distinguished by the serrations of the subterminal portion of the cutting edge of the maxilla, and from Stelgidillas by the short, broad, and much-depressed bill. Of the other species commonly referred to Andropadus, only latiros- tris has been examined, so that with this exception it has not been pos- sible to determine where they should be placed. EURILLAS VIRENS (Cassin). Andropadus virens CASSIN, Proc. Acad. Nat. Sci. Phila., 1857, p. 34. Two specimens. Although both are apparently adults, one is much more brownish both above and below. EURILLAS LATIROSTRIS (Strickland). Andropadus latirostris STRICKLAND, Proc. Zool. Soc., 1844, p. 100. One specimen. There may be some doubt about the advisability of referring this species to Hurillas, for in some characters it is aberrant; but it certainly is not an Andropadus, and, unless a separate genus be created for its reception, is apparently best placed as above. PYCNONOTUS BARBATUS GABONENSIS (Sharpe). Pycnonotus gabonensis SHARPE, Proc. Zool. Soc., 1871, p. 132, pl. vu, fig. 1. Three specimens, practically identical in plumage, except that one has almost no tinge of yellow on the crissum. The much darker shade of all brown portions of the plumage easily distinguishes this form from | Evpvs, latus; 7AAds, turdus. 2 Proc. U.S. Nat. Mus., XXII, 1899, p. 130. 16 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. true barbatus ; but intermediate specimens, from the region of the river Niger,' make necessary its reduction to subspecific rank. An example in the U. S. National Museum collection, from Fantee, is intermediate, but apparently nearer gabonensis. Family MUSCICAPID Ai. STIZORHINA FRASERI (Strickland). Muscicapa fraseri STRICKLAND, Proce. Zool. Soc., 1844, p. 101. Stizorhina fraseri OBERHOLSER, Proc. Acad. Nat. Sci. Phila., June, 1899, p. 213. Two specimens. Both are sexed as males, but one is noticeably paler both above and below, having also much less rusty on the superior wing-coverts, is slightly smaller, and may possibly be a female. TCHITREA VIRIDIS (Miiller). Muscicapa viridis MULLER, Syst. Nat., Anhang, 1776, p. 171. Muscicapa cristata GMELIN, Syst. Nat., I, 1788, p. 938. One specimen of this puzzling species is in the collection. The head is metallic greenish blue, as is also the throat, which shades off gradu- ally into the bluish slate of the abdomen and crissum; the back and well-developed tail are rufous. . This is the species commonly called Terpsiphone cristata, but Miiller’s name viridis has twelve years’ priority, and should not be ignored. ARTOMYIAS FULIGINOSA J. and EK. Verreaux. Artomyias fuliginosa J. and FE. VERREAUX, Journ. f. Orn., March, 1855, p. 104. One specimen, in rather poor plumage, taken June 8, 1895. It is marked female. DIAPHOROPHYIA CASTANEA (Fraser). Platysteira castanea FRASER, Proc. Zool. Soc., 1842, p. 141. Diaphorophyia castanea SHARPE, Ibis, 1873, p. 172. ; Three specimens. Two are adult males in breeding plumage; the other is apparently a young female. It differs from the adult female in being rather darker above, the head dull grayish brown instead of bluish gray; the burnt-sienna brown of throat and jugulum much mixed with whitish. Family NECTARINIID 2. ANTHREPTES FRASERI Jardine and Selby. Anthreptes frasert JARDINE and SELBY, III. Orn., 1842, new ser., pl. 52. One specimen, apparently an adult female, taken June 15, 1895. This rare sunbird does not seem ever to have been recorded north of — Gaboon, and thus is a very interesting addition, to the fauna of the Cameroons District. 1} Sharpe, Cat. Birds Brit. Mus., VI, 1881, p. 147. NO. 1180. BIRDS FROM WEST AFRICA—OBERHOLSER. 17 CINNYRIS OBSCURA (Jardine). Nectarinia obscurc, JARDINE, Monogr. Sunbirds, 1842, p. 253. Cinnyris obscurus BONAPARTE, Consp. Avium, I, 1850, p. 407. In the series of seven specimens there is comparatively little indi- vidual color difference. ‘The upper parts in some are rather more tinged with brownish; the under surface varies somewhat in the extent and shade of the greenish wash; but otherwise they are alike. There is, however, a considerable variation in measurements. A specimen in the U.S. Museum collection, from Fantee, is noticeably more brownish both above and below, and suggests the possibility of the existence of a northern race. Family PLOCEIDA. MALIMBUS MALIMBICUS (Daudin). Tanagra malimbica (male) DAuDIN, Ann. du Mus., I, 1802, p. 151, pl. 10, fig. 1. Malimbus malimbicus SHARPE, Cat. Birds Brit. Mus., XIII, 1890, p. 480. The single specimen is an adult male in perfect plumage. It is apparently identical with an example from Fantee, and as compared with this does not exhibit the restriction of black on the forehead which is stated by Dr. Sharpe to characterize the Camerocns birds. SPORAEGINTHUS MELPODUS (Vieillot). Fringilla melpoda VIEILLOT, Nouv. Dict. d’Hist. Nat., XII, 1817, p. 177. Sporaeginthus melpodus SHARPE, Cat. Birds Brit. Mus., XIII, 1890, p. 325. Two specimens, June 26, 1895,in immature plumage. As this con- dition differs somewhat from that of the adult, and appears to be unknown, the following description is offered: Above, including wing- coverts, light chocolate brown, duller and rather darker on the head, but without conspicuous contrast; upper tail-coverts dull red; wing: quills fuscous, narrowly margined with paler; tail sepia, the outer feathers tipped and broadly edged externally with brownish gray; sides of head orange, this color deepest on the lores and paling to yel- low on the posterior auriculars; throat and sides of neck light gray; remainder of lower parts dull buff, palest anteriorly; lining ot wing buff. PYRENESTES COCCINEUS Cassin. Pyrenestes coccineus CASSIN, Proc. Acad. Nat. Sci. Phila., 1848, p. 67. Two adult males in the comparatively rare black plumage. One of these, taken June 27, is in process of molt, this being most conspicuous in the feathers of head and tail. Hamily HIRUNDINID i. PSALIDOPROCNE NITENS (Cassin), Alticora nitens CASSIN, Proc. Acad. Nat. Sci. Phila., 1857, p. 38. Psalidoprocne nitens SHARPE, Proc. Zool. Soc., 1870, p. 291. Two specimens. Both have the throat sooty brown, a character mentioned by Dr. Sharpe! as peculiar to the birds from Gaboon and 'Cat. Birds Brit. Mus., X, 1885, p. 204. Proc. N. M., vol. xxii 2 18 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. the Cameroons. No other specimens are at present available for com- parison, so that it is impossible to add anything to his remarks. One of the present examples, probably an immature bird, has a conspicuous brownish tinge to the entire plumage, this most noticeable below, the abdomen being almost entirely devoid of any greenish shade. Family DICRURIDZi. DICRURUS MODESTUS Hartlaub. Dicrurus modestus HARTLAUB, Rev. et Mag. de Zool., 1849, p. 495. One adult male, June 5, 1895. In process of molt, this particularly observable in the feathers of the wings, tail, throat, and sides of head. This example is slightly less velvety above than others of the same species, in this respect appearing to be somewhat intermediate between true modestus of Gaboon and atactus! from Liberia and Fantee. Family LANITD.4. NICATOR CHLORIS (Lesson). ’ Tchagra chloris Lesson, Traité d@’Orn., 1831, p. 373. Nicator chloris FINSCH AND HARTLAUB, V6g. Ostafr., 1870, p. 360. One specimen, apparently identical with others from Fantee and Gaboon CHAUNONOTUS SABINEI Gray. Thamnophilus sabinei J. E.GRAy, Zool. Misc., I, p. 6. Chaunonotus sabinei J. E. GRAY, Mag. Nat. Hist., 1X, 1837, p. 487. One specimen, July 15, 1895, with molt not quite completed. The structural characters of this species seem quite sufficient to warrant its generic separation from Dryoscopus. DRYOSCOPUS LEUCORHYNCHUS Hartlaub. Telephonus leucorhynchus HARTLAUB, Rev. Zool., 1848, p. 108. Dryoscopus leucorhynchus HARTLAUB, Orn. W. Aff., 1857, p. 112. One specimen, differing from a Gaboon example in having less of the brownish tinge, this appreciable throughout the plumage, and in hav- ing a shorter tail; but whether these differences are geographical or merely individual is not possible to determine from the material at hand. TELOPHONUS AUSTRALIS USSHERI (Sharpe). Laniarius ussheri SHARPE, Layard’s Birds S. Africa, 1882, p. 397. Telophonus ussheri GADow, Cat. Birds Brit. Mus., VIII, 1883, p. 124. One male, June 14. The specific distinctness of Telophonus australis. from Telophonus senegalus appears to be perfectly weil established on 2 the differences mentioned by Dr. Gadow;” and the latter is also darker, 'Proc. U.S. Nat. Mus., XXII, 1899, p. 35. ?Cat. Birds Brit. Mus., VIII, 1883, p. 124. No. 1180. BIRDS FROM WEST AFRICA—OBERHOLSER. 19 duller below, with a much more deeply ochraceous superciliary stripe. Telophonus australis usshert seems to be a very good race, and some additional characters separating it from true australis are the darker shade of the upper surface, the rather lighter, less ochraceous super- ciliary stripe, and much paler auriculars. In the present specimen of ussheri the dark bars on the two middle tail feathers are much more indistinct than on any of the examples of australis available for com- parison. The specific name australis appears to be the correct one for the bird commonly known as Telophonus trivirgatus, since Malaconotus australis Smith! bas thirteen years priority over the same author’s trivirgatus. Family ORIOLID. ORIOLUS NIGRIPENNIS Verreaux. Oriolus nigripennis VERREAUX, Journ. f. Orn., 1855, p. 105. Two specimens in adult plumage. This species is, besides its other points of difference, very much more yellowish green above than either Oriolus larvatus or Oriolus larvatus brachyrhynchus. Family PRIONOPID 4. FRASERIA OCHREATA (Strickland). Tephrodornis ochreatus STRICKLAND, Proc. Zool. Soc., 1844, p. 102. Fraseria ochreata HARTLAUB, Orn. West Afr., 1857, p. 102. Five specimens, two adults and three more or less immature. The former are sexed as males, and are apparently typical. One of them has a broad white tip to one of the right scapulars—evidently an albinistic marking. The immature birds differ in being rather lighter and browner above, with narrow fulvous tips to the greater wing-cov- erts, and in being washed with ochraceous below, most conspicuously on the breast and jugulum, though in one example quite strongly over nearly all the lower surface. The squamations on the chest are much less distinct than in the adult, being rather narrower, as well as paler and more brownish, Whether or not Fraseria should be included among the Prionopidse may well be questioned, but its scutellated tarsus indicates that it is not a thrush, although it has been placed in the family Turdide by Captain Shelley.’ ‘Rep. Expl. Exped. Cent. Afr., 1836, p. 44. 2 Birds of Africa, I, 1896, p. 83 vhs. DESCRIPTIONS OF TWO NEW SPECIES OF TORTOISES FROM THE TERTIARY OF THE UNITED STATES. By O. P. Hay. The species first to be described was collected by Mr. Charles Schu- chert, assistant curator, division of stratigraphic paleontology, U.S. National Museum. The specimen was found in the Zeuglodon beds of the Jackson formation of the Eocene, in Choctaw County, Alabama, near Cocoa post-office, on land belonging to Mr. James Brown. In the immediate vicinity, Mr. Schuchert collected also a nearly complete skeleton of Basilosaurus (Zeuglodon), some bones of Dorudon, and ver- tebre of the snake which has been described and figured by Mr. F. A. Lucas ! as Pterosphenus schucherti. The turtle was found lying imbedded in the rock with the plastron downward. The upper portion of the carapace had been planed off by denudation down to the upper borders of the marginals. It is there- fore impossible to determine the character of the neural and costal bones and of the various superior epidermal scutes. The remainder of the shell was intact, or nearly so, when excavated; but, in spite of careful packing, it suffered much in shipment to the National Museum. However, notwithstanding its broken condition, it has, under the intel- ligent supervision of Mr. Lucas, the Curator of the Division of Com- parative Anatomy, been so skillfully restored that little is left to be desired, so far as the plastron and most of the marginals are con- cerned. To Mr. Lucas I am indebted for the opportunity to study and describe this interesting relic. I have assigned this species provisionally to the genus Hadrianus of Cope. It undoubtedly belongs there, or to Testudo, or to some closely related genus. In order to determine this question definitely we need to have the upper portion of the shell. An examination of the diagram of the shell of Testudo ibera given by Boulenger? shows that the neurals and costals of this genus have undergone peculiar modifications. The neurals are alternately quadrate and octagonal, while the outer ends 1 Proc. U.S. Nat. Mus., 1898, X XI, p. 637. 2 Catalogue of Chelonians, p. 151. PROCEEDINGS U.S. NATIONAL MUSEUM, VOL. XXII—No. 1181. 22 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. of the costals are alternately very wide and very narrow. In Hadri- anus the elements of the carapace have not attained such differentiation. The species here described is named in honor of its discoverer. It will therefore be known as HADRIANUS SCHUCHERTI. The total length of the shell of this tortoise was originally close to 75 em. (30 inches); its width, 52.5 cm. (21 inches). As will be seen from an inspection of Plate IV, the lateral borders of the shell are nearly straight, and parallel with each other. In front of the forelegs the margins round rapidly into the anterior border, so that in front the carapace is quite truncate. The hinder border approaches a segment of a circle. Neither the anterior nor the posterior margin is to any degree serrated. The marginals rise on the side of the carapace to a height of 10 em. The passage from the lower surface of the shell to the upper is quite abrupt; but this is due to a considerable extent, at least, to distortion from pressure. In living forms of Testudo the upper portion of the shell usually rounds gradually into the lower portion. The borders of the carapace over the openings for the posterior limbs are gently reverted; over the openings for the lower limbs the carapace is somewhat more strongly reverted. The caudal marginal appears to have descended without any upward flare. The plastron is concave; it has a length of 67.5 em. On a line 25 mm. in front of the axillary notch the width of the anterior lobe of the plastron is 28cm. The tip of the lobe is prolonged into an obtuse angle. The tip is considerably thickened in front, but the borders are rather acute. The tip of the lobe was not prolonged in front of the carapace. In Hadrianus octonarius, the type of the genus, the plastron ends in front in a very broad and truncate lip. The width of the bridge is slightly more than one-third the length of the plastron. Measured on a line 25 mm. behind the inguinal notches, the width of the hinder lobe of the plastron is 30 em. This lobe is deeply notched on its hinder border. The posterior angles may, how- ever, have been somewhat more rounded than in the restoration. The entoplastron has a width of 15 em. Its hinder border can not be accurately traced, but its position was not greatly different from that represented by the dotted line on Plate V. The other bony ele- ments of the plastron have their boundaries shown on the same plate by means of the continuous zigzag lines. ‘They present no essential variations in form or position from those of modern species of Testudo. The conformation of the epidermal scutes, whose sutures are shown by the stippled lines in Plate V, is not, so far as can be determined with certainty, essentially different from that of the shields of recent species of Testudo. The gulars did not encroach on the territory of the ento- plastron. The humero-pectoral suture runs straight across the plastron until it approaches the axillary notch, when it turns abruptly forward. No. 1181. NEW SPECIES OF TORTOISES—HAY. 93 The pectoral shields are extremely narrow in the middle line, but they widen right and left. The suture between the right and the left abdom- inal shields is very long, being contained in the length of the plastron only two and one-half times. There is present on each side an evident inguinal shield, and there were probably axillary shields, but they can not be demonstrated. I am not able to determine with certainty the position of the suture between the marginal shields and those of the plastron. In Testudo and its immediate allies this suture is well up on the marginal bones. In other genera, as Geomyda and Clemmys, it is located near the outer border of the plastral bones. In H. schucherti the suture between the pectorals and the abdominals gives off, near the outer border of the hyoplastron, what seems plainly to be a branch which is directed forward. This branch seems to me to be the anterior end of the suture between the plastral and the marginal shields. Ifsuch it is, it is quite different in position from that of species of Testudo. In the type of Hadrianus, a large and quite perfect shell, the sutures between the epidermal shields are very deep and distinet, but the sutures between the bones are usually very obscure. Nevertheless, I believe that here too the epidermal suture referred to lies on the plas- tral bones. : The second species of turtle to be described comes from coal-bearing strata of Miocene age. The particular locality is mine No. 4, near Roslyn, Washington. This town is located in Kittitass County, at the eastern base of the Cascade range of mountains. The deposit in which the turtle was found is known as the Roslyn sandstone. The preser- vation of the fine specimen is due to the intelligent interest of Mr. P. Y. Heckman, of Roslyn, from whom it was obtained for the U.S. National Museum. The Museum is indebted to Dr. F. H. Knowlton for his friendly offices in securing this species. The specimen displays only the upper surface of the shell; but this is almost entire and almost uninjured. Itis probable that the plastron is also present, but the matrix is so refractory that it has been thought best not to attempt to remove it. After a careful study of the carapace I have been unable to assign it to any of the described genera of Testu- dines. I therefore venture to propose a new genus for its reception. The specific name I derive from the collector of the specimen. The name of this new form is ACHERONTEMYS HECKMANI. Generic characters.—Carapace broad, rather depressed. Neural bones about as broad as long; mostly hexagonal, with the antero-lateral sides much shorter than the postero lateral. A single very broad pygal. Marginals 23 in number, coinciding with the outer ends of the cos- tals, instead of alternating with them. Vertebral shields very broad. Name derived from Acheron, a river of the fabled lower world, and emys, a turtle. ; Specific characters.—Carapace broad, rounded in front and behind. 24 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. No evidences of serrations on the border behind. Median line appar- ently occupied by a keel of low bosses. Surface of the carapace mostly smooth, with the impressions of the shield sutures distinct; areas occupied by costal shields with some longitudinal wrinkles. First neural nearly square; the eighth pentag- onal, with the anterior side very short. The single pygal extremely broad, extending across three marginals. The nuchal is considerably broader than long. Marginals quadrate; the lateral ones each placed opposite the end of a costal. The second and third vertebral shields enormous, extending laterally beyond the middle of the costals, the anterior border of the second vertebral occupying its usual position. Its hinder border thrown back to the hinder border of the third neural. The hinder border of the third vertebral not crossing the fifth neural, the usual position, but thrown backward to near the hinder border of the sixth neural. The fourth neural is thus made very concave in front. Costal shie!ds narrow, not one-half as wide as the contiguous verte- brals, alternate sutures between lateral marginal shields coinciding with sutures of costal shields. As to the relationships of this genus we can say nothing certain until we have at least had an opportunity to study the plastron. Neverthe- less its affinities appear to be with the Chelydridz, and we may place it there provisionally. It is of interest to compare the figure on Plate VI with the diagrams of the carapaces of Chelydra and Macroclemmys, found in Boulengevr’s Catalogue of Chelonians.! The carapaces of all three genera have the same general form; in all, the neural bones are closely similar; in all, the marginals lie opposite the outer ends of the costals, instead of alternating with the latter. In Cheiydra and Macro- clemmys, however, there are more or less extensive fontanelles between the costals and marginals. In both, the vertebral shields are of mod- erate width; in both, the hinder border of the shellis serrated. Length of the carapace, 181 mm; its width, 118 mm. Certain described genera of fossil turtles display vertebral shields as broad, perhaps, as those of the form here described. Among these may be mentioned Hylwochelys, which is figured by Dr. Lydekker.2 In this genus, however, the neural bones are long and narrow. Plesiochelys, a figure of which may be found in Zittel’s Handbuch, page 545, also has very broad vertebral shields; but here again the neurals are nar- row. Platychelys* is also furnished with broad vertebrals, but it is in many respects different from Acherontemys. The neurals are very irreg- ular in form and size; the carapace has a different form and is covered with large bosses. It is to be hoped that Mr. Heckman will be able, through the miners — in his employ, to secure other specimens of this species, so that the structure of the plastron may be determined. 1 Pages 22, 25. * Catalogue of the fossil Reptilia and Amphibia, Pt. 3, p. 188, fig. 43. 3’ Lydekker, Catalogue of the fossil Reptilia and Amphibia, Pt. 3, p. 217, fig. 48; Zittel, Handbuch, III, p. 538, tig. 499. IV Rie PROCEEDINGS, VOL. XXIl NATIONAL MUSEUM U. S. HADRIANUS SCHUCHERTI. ae Bae ea ene Pv en suse U. S. NATIONAL MUSEUM PROCEEDINGS, VOL. XXIl PEW. HADRIANUS SCHUCHERTI. me U. S. NATIONAL MUSEUM PROCEEDINGS, VOL. XXII PL. Vi ACHERONTEMYS HECKMANI. x65. Bin tn ct naly A LIST OF THE BIRDS COLLECTED BY MR. R. P. CURRIE IN LIBERIA. By Harry C. OBERHOLSER, Assistant Biologist, Department of Agriculture. Although Mr. Currie’s trip to Liberia, under the auspices of the United States National Museum, was largely devoted to the collecting of insects, he nevertheless managed during his sojourn in that country, trom February 1 until May 10, 1897, to obtain a small series of birds. These specimens, 57 in number, were referred to the writer for deter- mination and report. They prove to represent 39 forms, 4 of which are here described as new, while another, Dryotriorchis spectabilis, is sufficiently rare to be worthy of special mention. AJ] the matter between quotation marks, together with the data relating to length, extent, colors of the unfeathered parts, as well as the Liberian, or English, and Golah, or native, names are from Mr. Currie’s notes. The writer is also in debted to him for information respecting the locality at which the birds were secured. Mount Coffee, where Mr. Currie’s collecting was done, is one of the numerous low hills along the St. Paul River, about 25 miles from Monrovia. The land, which begins to rise near the coast, attains in the vicinity of Mount Coffee an altitude of from 400 to 500 feet. The greater portion of the region is covered with heavy tropical forest, interrupted here and there by small clearings. The undergrowth in the forest is not particularly heavy, but abandoned rice fields are, under the influence of the hot, moist climate, rapidly converted into impenetrable thickets. The river, here about 100 yards in width, flows with considerable current over an exceedingly rocky bed and receives the tribute of numerous minor streams. These latter, particularly when they run through the forest, are, like the clearings, favorite resorts for birds. Family CURSORIID 44. GALACHRYSIA MARCHEI (Oustalet). Glareola marchei OUSTALET, Bull. Soc. Philom., I, 1877, p. 104. Galactochrysea marchit SHARPE, Cat. Birds Brit. Mus., XXIV, 1896, p. 726. Two adult males and an immature female, all taken along the St. Paul River. The two adults measure, respectively: Length, 180.6, 185.6 mm.; expanse, 450, 465.5 mm. PROCEEDINGS U. S. NATIONAL Museum, VOL. XXII-—No. 1182. 26 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Family RALLIDZ. SAROTHRURA PULCHRA (Gray). Crex pulchra J. E. GRAY, in Griffith’s ed. Cuvier, Anim. Kingd., Aves, pp. 410, 542. Sarothrura pulchra STONE, Proc. Acad. Nat. Sci. Phila., 1894, p. 148. One adult male of this pretty rail is in the collection. Length, 177 mm.; expanse, 254.5 mm. ‘Bill dark horn or blackish, paler at base beneath; feet black.” Family PHASIANID. FRANCOLINUS AHANTENSIS Temminck. Francolinus ahantensis TEMMINCK, Bijdr. tot de Dierk., I, 1854, p. 49, pl. 14. One adult female. Length, 353 mm.; expanse, 534mm. The Eng- lish name of the species is ‘‘Guinea fowl” in Liberia; in the Golah dialect it is ‘“‘Chine-chilo.” Family FALCONID Zs. DRYOTRIORCHIS SPECTABILIS (Schlegel). Astur spectabilis SCHLEGEL, Nederl. Tijdschr., I, 1864, p. 13, pl. 6. Dryotriorchis spectabilis SHARPE,' Cat. Birds Brit. Mus., I, 1874, p. 279. One fine adult example of this rare hawk is in the collection. The entire upper surface, excepting the tail and the wing quills, has a dis- tinct slaty cast; otherwise this individual agrees perfectly with pub- lished descriptions. Length, 546 mm.; expanse, 953 mm. It was shot in the forest, and was in the act of swallowing a green snake, part of which was subsequently found in its throat. Mr. Currie states that it was very tame and unsuspicious. Golah name of the species, ‘See- pwah.” The specimen obtained by Mr. Currie is apparently the ninth of which any record has been published. All of these have come from a restricted area on the western coast of Africa extending only from Liberia to Gaboon. A list of those previously recorded is here added: 1. One specimen from Elmina, Gold Coast. Schlegel, Nederl. Tijdschr., I, 1864, p. 13, 1. 6. 2. oe adult, from the interior of Fantee. Shelley, Ibis, 1874, p. 90. 3. One young, from Gaboon. Gurney, Proc. Zool. Soc., 1880, p. 621. 4. One adult female, from the Du Queah River, Liberia. Biittikofer, Notes Leyden Mus., VIII, 1886, p. 246. 5. One adult male, from Schieffelinsville, Liberia. Biittikofer, Notes Leyden Mus., X, 1888, p. 65. 6. One specimen, from Barombi, Cameroons. Reichenow, Journ. f. Orn., 1895, p. 102. 7. One, from Sebbe, Togo, alive in the Berlin Zoological Garden. Ornith. Monats- berichte, II, 1894, p. 128; Reichenow, Journ. f. Orn., 1895, p. 102. 8. One female, from Victoria, Cameroons. Reichenow, Journ. f. Orn., 1896, p. 7. ‘The authority for this combination is usually quoted as Shelley, Ibis, 1874, p. 90, but Dr. Sharpe (Cat. Birds Brit. Mus., I, 1874, p. 279), seems to have been the first actually to write Dryotriorchis spectabilis. NO. 1182. BIRDS COLLECTED IN LIBERIA—OBERHOLSER. Del Family MUSOPHAGID 4. TURACUS MACRORHYNCHUS (Fraser). Corythaix macrorhynchus FRASER, Proce. Zool. Soc., 1839, p. 34. Turacus macrorhynchus GRAY, Gen. Birds, II, 1845, p. 395. One adult male, taken April 22,1897. It is in fresh plumage with indications of a not quite completed molt. ‘Feet black;” length, 439 mm.; expanse, 512mm. Called ‘‘Redwing” by English-speaking Li berians. Family CUCULID A. CENTROPUS SENEGALENSIS (Linnzus). Cuculus senegalensis LINNAEUS, Syst. Nat., 12th ed., I, 1766, p. 169. Centropus senegalensis KUHL and SWINDEREN, Buff. and D’Aub. Nom. Syst., 1820, p. 6. A single specimen is in the collection, a young bird just acquiring its first plumage, killed April 16,1897. Although many of the feathers are still in their sheaths, and the wings and tail very imperfectly devel- oped, a brief description of the plumage may be of interest. Head, cervix, and tail dull black, the last with ill defined brown bars; back, scapulars, and upper surface of wings bright chestnut, heavily barred with black, these bars decreasing in width and regularity on the outer feathers of the wings; under surface vinaceous cinnamon, much paler on the middle of the posterior portion. This specimen is one of two which Mr. Currie kept for some time alive. (See Plate VII.) Family CORACIIDA. EURYSTOMUS GULARIS Vieillot. Eurystomus gularis VIEILLOT, Nouv. Dict. d’ Hist. Nat., X XIX, 1819, p. 426. One specimen, a male. Length, 263 mm.; alar expanse, 516 mm. EURYSTOMUS AFER (Latham). Coracias afra LATHAM, Ind. Orn., I, 1790, p. 172. Eurystomus afra STEPHENS, in Shaw’s Gen. Zool., XIII, 1826, p. 97. One male, taken in a clearing; the only one seen. Length, 260 mm.; expanse, 533 mm. Golah name, ‘ Bah-yiddie.” Family MEROPID i. MEROPS ALBICOLLIS Vieillot. Merops albicollis VIEILLOT, Nouv. Dict. d’Hist. Nat., XIV, 1817, p. 15. Three specimens, sex uncertain. The species is reported by Mr. Cur- rietobecommon. “Bill black; feet olive-green; iris crimson.” Called ““Dry-time bird” in English; the Golah name is “‘ Way-dwa.” There is very little individual difference observable in these specimens, even in size. Two of them—one taken February 13, the other March 13— are molting the tail feathers. 28 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. MELITTOPHAGUS GULARIS (Shaw and Nodder). Merops gularis SHaw and NoppER, Nat. Misc., IX, 1798, pl. 337. Melittophagus gularis GRAY, Gen. Birds, I, 1846, p. 86, pl. 30. Two specimens, male and female. “Bill and feet black; iris crim- son.” Male.—Length, 219.5 mm.; extent, 304 mm. Female.—Length, 205 mm.; extent, 297 mm. There seems to be no observable difference in color between the sexes. Family BUCEROTID &. ORTHOLOPHUS LEUCOLOPHUS (Sharpe). Berenicornis leucolophus SHARPE, Zool. Rec. for 1871, 1873, p. 54. Ortholophus leucolophus GRANT, Cat. Birds Brit. Mus., XVII, 1892, p. 426. One female, taken April 30, 1897. Length, 684 mm.; extent, 650 mm. This is an immature specimen, with black throat, and agrees with the description of the young of leucolophus given by Mr. Ogilvie- Grant,! except for the presence of a conspicuous buffy white spot on the outer webs of most of the primaries. LOPHOCEROS SEMIFASCIATUS (Hartlaub). Buceros semifasciatus HARTLAUB, Journ. fiir Orn., 1855, pp. 356, 361. Lophoceros semifasciatus SHELLEY, Ibis, 1888, p. 59. A pair of adult birds is in the collection. According to Mr. Currie’s notes, both were shot in the forest near the clearing at Mount Coffee. The English-speaking Liberians call this species ‘Palm bird,” while the Golah name is ‘‘ Pwehah-pwehah.” One of the specimens was taken February 23, the other March 19, 1897; both show indications of a molt not quite completed. The naked skin on the sides of the throat is slate black, not blue, as given by Mr. Ogilvie-Grant.? The feet and the bare skin encircling the eyes are also black. Male.—Length, 600 mm.; expanse, 800 mm. Female.—Length, 570 mm.; expanse, 800 mm. HORIZOCERUS, new genus. Chars. gen.—Genus generi “Lophoceros” dicto affine, sed cauda valde cuneata, rostro prope recto, hujus cornu minimo, acute carinato, facile distinguendum. Type.— Toccus hartlaubi Gould. The strongly wedge-shaped tail, comparatively straight bill, with its very small, sharply keeled casque, to say nothing of conspicuous color differences, appear fully to justify the creation of a separate genus for 'Cat. Birds Brit. Mus., XVII, 1892, p. 426. 3 opife, limito; xépas, cornu. ?Idem., p. 401. no. 1182. BIRDS COLLECTED IN LIBERIA—OBERHOLSER. 29 bond the species commonly known as Lophoceros hartlaubi. In fact, it bears less apparent relationship to the species with which it has usually been associated than it does to Ortholophus leucolophus. From Ortholophus the present genus may be satisfactorily distinguished by the absence of a conspicuous crest, and particularly by the comparative length of the tail, which is barely longer than the wing, instead of about twice as long. HORIZOCERUS HARTLAUBI (Gould). Toccus hartlaubi GOULD, Proc. Zool. Soc., 1860, p. 380. One adult male, just completing the molt, taken February 19, 1897. “Bill slate black, the tip dark red; feet slate color;” length, 406 mm.; expanse, 445 mm. The Liberian English name of this species is “‘Monkey-bird,” because of its alleged habit of following monkeys; in the Golah language it is called ‘‘ Hin-gongeh.” Family CAPITONID. BARBATULA DUCHAILLUI Cassin. Barbatula duchaillui Cassin, Proc. Acad, Nat. Sci. Phila., 1855, p. 324. One adult male. Length, 177 mm.; extent, 266 mm. “ Bill black; feet nearly so.” Family PICID/. DENDROMUS CAROLI ARIZELUS, new subspecies. Campothera caroli BUTTIKOFER, Notes Leyden Mus., VII, 1885, p. 221 (nec Mal- herbe). Chars. subsp.—Similar to Dendromus caroli, but entire under surface, including lower tail-coverts, clear uniform olive green, the spots appar- ently smaller and less numerous; these, together with superciliary stripe, lining of wing, light markings on outer webs of primaries, and inner webs of secondaries, strongly tinged with greenish, not buffy; spots on exterior webs of primaries much smaller; rufous area on side of head lighter and more yellowish; crown distinctly more olive greenish. Length, 178 mm.; expanse, 340 mm.; wing, 101 mm.; tail, 60 mm.; exposed culmen, 24 mm.; tarsus, 19 mm.; middle toe, 17 mm. Description.—Type, adult male; No. 161763, U.S.N.M.; Mount Coffee, Liberia, February 19, 1897; R. P. Currie. Above golden olive green, the head much duller, and its feathers tipped with dark red; a few more or less concealed spots of pale greenish on the feathers of the hind neck. Wings fuscous, the exposed surface when closed, in color like the back; outer webs of primaries with small spots of greenish yellow; inner webs of all the quills, at least basally, with wide inden- tations of the same color. Tail brownish black, the outer feathers with small lateral spots of greenish yellow. Under surface greenish olive, heavily spotted with greenish yellow, these markings largest posteriorly ; superciliary stripe greenish yellow; postocular region, including auric- 30 PROCKEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. ulars, reddish chestnut; under wing-coverts and axillars light greenish | yellow with a decided buffy tinge. Bull in life slate color; tarsi dull light green. The single specimen obtained by Mr. Currie differs so much from a Gaboon example, as above indicated, that it without doubt represents an undescribed race, if, indeed, not a distinct species. It is evidently the same as Dr. Biittikofer’s specimens from Liberia, exhibiting all the differences from true caroli mentioned by him,! as well as others which apparently escaped his notice. The specimen at hand from Gaboon, the original locality of caroli, corresponds closely with published deseriptions of this form, and is apparently a typical example. No specimens from the territory intervening between Liberia and Gaboon have been available in the present connection; but the differences between carolt and arizelus are such as seem to indicate subspecific relationship, and arizelus has, therefore, been given a trinomial desig- nation. Family MOTACILLID A. MOTACILLA VIDUA Sundevall. Motacilla vidua SUNDEVALL, Gifv. K. Vet. Akad. Forh. Stockh., 1850, p. 128. One specimen, an adult male in breeding plumage. Family PYCNONOTID 2. STELGIDILLAS,? new genus. Chars. gen.—Genus generi ‘“‘Chlorocichla” dicto simile, sed maxille tcmii parte subterminali distincte serrata; nec corpore subtus clare flavescente. Type.—Andropadus gracilirostris Strickland. The uncertainty which has attended the determination of the proper generic affinities of Andropadus gracilirostris has led to the placing of this species in three different genera, with the characters of none of which does it suffi- ciently agree. From Criniger it may be at once distinguished by the depressed and slender bill—the maxilla with serrations on the cutting edge just posterior to the subterminal notch. The narrow, depressed bill separates it easily from either Andropadus or Hurillas, while from Chlorocichla, to which it seems to be most closely allied, it differs in the presence of serrations on the distal portion of the maxillar tomium. All the known species of Chlorocichla, moreover, are yellow or yellow- ish olive below, and the genus, as restricted by Captain Shelley,’ is a well-defined group. i The species described by Cabanis as Andropadus gracilis + is not per- fectly typical, but should apparently be associated generically with gracilirostris. The genus will then include Stelgidillas gractlirostris 1 Notes Leyden Museum, VII, 1885, p. 221. 3 Birds of Africa, I, 1896, p. 63. 26redyis, strigilis; ZAAds, turdus. 4Orn. Centralbl., 1880, p. 174. NO. 1182. BIRDS COLLECTED IN LIBERITA—OBERHOLSER. 31 (Strickland), Stelgidillas gracilirostris liberiensis (Reichenow), Stelgi- dillas gracilis (Cabanis). STELGIDILLAS GRACILIROSTRIS LIBERIENSIS (Reichenow). Andropadus gracilirostris liberiensis REICHENOW, Novit. Zool., II, 1895, p. 160. One specimen, April 1, with molt not yet entirely completed. It agrees perfectly with Dr. Reichenow’s description of liberiensis which seems to be a sufficiently well characterized subspecies of Stelgidillas gractlirostris. The measurements of this example are: Length, 199 mm.; extent, 262 mm. “Bill black, lower mandible slightly paler beneath; feet black; iris crimson.” BLEDA SYNDACTYLA (Swainson). Dasycephala syndactyla SwAInson, Birds W. Af., I, 1837, p. 261. Bleda syndactyla RICHMOND, Auk, XVI, April, 1899, p. 183. One adult male, apparently typical. Length, 251 mm.; extent, 330.5 mm.; ‘iris deep red.” EURILLAS VIRENS (Cassin). Andropadus virens CASSIN, Proc. Acad. Nat. Sci. Phila., 1857, p. 34. Eurillas virens OBERHOLSER, Proc. U.S. Nat. Mus., XXII, 1899, p. 15. One specimen, taken April 1, an immature male, in the plumage described by Dr. Hartlaub as Andropadus erythropterus. ‘‘ Bill black, lighter apically; feet light horn brown.” PYCNONOTUS BARBATUS (Desfontaine). Turdus barbatus DESFONTAINE, Mém. Acad. Roy. de Sciences, p. 500, pl. X11. Pycnonotus barbatus GRayY, Hand-list Birds, I, 1869, p. 268. Two specimens, taken February 12 and April 28, respectively. Both are in worn breeding plumage; and the latter has apparently just begun to molt. One of them hasan appreciable wash of yellow on the lower tail-coverts. ‘Bill and feet black; iris reddish brown. The English-speaking Liberians know this species as the “Pepper bird;” in the Golah dialect it is called ‘“‘ Bweh-lay.” Family MUSCICAPIDZ. TCHITREA NIGRICEPS Hartlaub. Tchitrea nigriceps HARTLAUB, Journ. f. Orn., 1855, pp. 355, 361 (ex Temminck manuscript). Terpsiphone nigriceps SHARPE, Proc. Zool. Soc., 1874, p. 306. Two adult specimens, male and female. The former is a very hand- some bird in perfect plumage; the latter agrees with Dr. Sharpe’s description of the supposed female,'! being very much duller colored. The upper parts, excepting, of course, the head, are considerably darker 1 Cat. Birds Brit. Mus., IV, 1879, p. 360. ae PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. than in the male, while the under surface, particularly the posterior portion, is lighter. Male.—Length, 190 mm.; extent, 203 mm.; “bill and feet bright blue black.” Female.—Length, 153 mm.; extent, 215 mm.; ‘bill dark horn, paler at base; feet blue black.” The Golah name of this bird is “‘ Wee-su-waw.” ARTOMYIAS USSHERI Sharpe. Artomyias ussh2ri SHARPE, Ibis, 1871, p. 416. Two specimens, adult male and female. The male is slightly paler and more grayish than the female, but otherwise identical. They agree with Dr. Sharpe’s description! except for the lack of whitish tips to the wing quills and greater coverts. These whitish tips are probably, as suggested by Dr. Sharpe,’ evidences of immaturity. These two individuals measure as follows: Male, length, 140 mm.; extent, 254 mm.; female, length, 142 mm.; extent, 264mm. It is inter- esting to notice the larger size of the female. The Golah name for the | species is ‘“‘ Bweh-bweh-dee.” Family NECTARINIID 4s. ANTHREPTES RECTIROSTRIS (Shaw). Certhia rectirostris SHaw, Gen. Zool., VIII, 1811, p. 246. Anthothreptes rectirostris GADOW, Cat. Birds Brit. Mus., 1X, 1884, p. 119. Four specimens. The two adult males appear not to differ from typ- ical examples, though one is rather lighter below than the other, besides being considerably smaller. Length, 99 mm.;? extent, 182 mm.; length, 112.6 mm.; extent, 173 mm. “Bill and feet black; iris choco- late brown.” Another specimen is sexed female with a query, and may possibly be an immature male. Length, 108 mm.; expanse, 167 mm. The upper surface is dull greenish olive with a conspicuous mixture of bronzy tipped feathers; the lesser wing-coverts are bronze green; the under parts are yellow, clearest on the median portion of the abdomen, shaded with olive green on the sides, paler on the throat and duller on the breast, both of which are slightly tinged with ashy. The fourth specimen is a young bird in first plumage, and is appar- ently rectirostris, although so young that without more specimens for examination it cannot be determined with absolute certainty. The upper surface is dull olive washed with greenish; wings dark brown with exterior edgings of golden olive; under parts pale dull yellow, the throat only washed with this color, as it is so imperfectly feathered that the slate gray bases of the feathers give their tint to the whole area. 1Cat. Birds Brit. Mus., IV, 1879, p. 145. 2 Tail imperfect. No. 1182. BIRDS COLLECTED IN LIBERIA—OBERHOLSER. 33 ANTHREPTES COLLARIS HYPODILUS (Jardine) Nectarinia hypodilus JARDINE, Contr. Orn., 1851, p. 153. Two specimens, male and female. ‘Bill and feet black, iris brown.” Male.—Length, 109.2 mm.; extent, 148.5 mm. Female.—Length, 102 mm.; extent, 144 mm. The latter shows indi- cations of a molt not quite completed. This species is apparently divisible into three well defined geograph- _ical races. In southern Africa occurs Anthreptes collaris collaris; in southeastern Africa Anthreptes collaris zambesianus, and in the western part of the continent Anthreptes collaris hypodilus. True collaris dif- fers from both of the other forms in having the secondaries, greater and primary coverts edged externally with golden olive instead of metallic green; the posterior lower parts are much darker and duller yellow than in zambesiana; less orange yellow and more shaded with olivaceous laterally than in hypodilus. From hypodilus, with which it has usually been considered identical, zambesianus may be readily dis- tinguished by the much paler, less orange tinted posterior under sur- face, as well as by the paler shade of the exterior margins to second- aries, primary and greater wing-coverts. ANTHREPTES IDIUS, new species. Chars. sp.—Similar to Anthreptes fraseri, but decidedly smaller; the outermost primary scarcely more than half as long; rather darker, and much less yellowish olive green throughout. This most noticeable on wings and tail. Description.—Type, male (immature?), No. 161807, U.S.N.M.; Mount Coffee, Liberia, March 16, 1897; R. P. Currie. Upper parts dark olive green, rather duller on the head; wings fuscous, the lesser coverts, edgings of the others and of the quills, like the back; tail-feathers greenish olive, with broad olive green exterior margins. Sides of head and neck olive green; eye ring olive yellow; entire under surface deep olive yeliow, almost uniform, but rather paler on chin, and shaded with olive green on sides and flanks; lining of wing olive yellow. ‘Bill dark horn, paler beneath; feet olive green.” Length, 122 mm.; extent, 178 mm. In details of structure and in pattern of coloration this new species is identical with Anthreptes fraseri, and does not need comparison with any of the other species of the genus. There is a possibility that dius may eventually turn out to be merely a geographical race of fraseri, but until such shall be proved to be the case it may stand as a species. The single specimen procured by Mr. Currie is sexed male, and if this be correct the absence of pectoral tufts, notwithstanding the lack of any other evidence, would seem to indicate immaturity; for it is quite probable, though of course not certain, that the aduit male would, like that of fraseri, possess these ornaments. Proc. N, M. vol. xxii 9 oO 34 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII, The following table shows the comparative size of the two species: Measurements. | Name. Wing.| Tail. |Tarsus. aod mm. mm. mm. mm. } Anthreptes frasert, adult female ......---. 64 42 16 9.5 | | Anthreptes idius, male [immature?]--.-.-.-- 54 38 14 9 | } t Mr. Currie states that this species was not uncommon in the “bush” about Mount Coffee, and that its Golah name is ‘‘ Zemeh.” : CINNYRIS CYANOLAIMA (Jardine). Nectarinia cyanolema JARDINE, Contr. Orn., 1851, p. 154. Cinnyris cyanolemus SHARPE and BOUVIER, Bull. Soc. Zool. France, I, 1876, p. 41. Three specimens—male, female, and young male. The two first are apparently typical birds in, breeding plumage; ‘bill and feet black;” length of female, 139 mm.; extent, 200mm. The immature male differs from the adult female in being darker, more sooty above, including wings and tail; the top of the head is sooty blackish instead of olive brownish; the sides of head and neck blackish slate instead of light brownish; the throat dull white, washed with olive yellow instead of light brownish, and sharply defined from the surrounding darker areas; breast and abdomen light olive green instead of brownish white; lining of wing sooty grayish instead of whitish. The Golah name of the adult male of this species is ‘‘ Zemeh-dee;” the young male is called ‘“‘Zemeh,” thus not distinguished from Anthreptes idius. CINNYRIS JOHANNZ: Verreaux. Cinnyris johanna J. and E, VERREAUX, Rev. et Mag. Zool., 1851, p. 314. One adult male of this brilliantly plumaged sunbird is in the collec- tion. ‘Bill and feet jet black;” length, 145.6 mm.; extent, 209 mm. CINNYRIS CHLOROPYGIA (Jardine). Nectarinia chloropygia JARDINE, Ann. and Mag. Nat. Hist., X, 1842, p. 188. Cinnyris chloropygius BONAPARTE, Consp. Avium, I, 1850, p. 407. One adult male. “Bill and teet black;” length, 103 mm.; extent, 133 mm. Mr. Currie reports the species common in the vicinity of Mount Coffee. In the Golah dialect it is called ‘‘Zemeh,” a name apparently applied indiscriminately to a number of small birds. Family PLOCEID A. MALIMBUS SCUTATUS (Cassin). Scobius! scutatus CASSIN, Proc. Acad. Nat. Sci. Phila., 1849, p. 157. Malimbus scutatus Gray, Hand-List Birds, II, 1870, p. 43. Two adult specimens, male and female. ‘Bill and feet black; iris crimson.” Length, male, 175 mm.; expanse, 282 mm. Length, female, 172 mm.; expanse, 266 mm. 1 Typographical error for Sycobius. No. 1182. BIRDS COLLECTED IN LIBERIA—OBERHOLSER. 35 MALIMBUS RUBRICOLLIS BARTLETTI (Sharpe). Malimbus bartletti SHARPE, Cat. Birds Brit. Mus., XIII, 1890, p. 479. One adult male. ‘Bill black; feet purplish-black; iris chocolate brown.” Length, 214 mm.; expanse, 337 mm. Golah name, “ Way- see-eh.” This form undoubtedly intergrades with the more southern Malimbus rubricollis, to which it is closely related; and its name should thus be, as above given, a trinomial. NIGRITA BICOLOR (Hartlaub). Pytelia bicolor HARTLAUB, Syst. Verz. Bremen, 1844, p. 76. Nigrita bicolor SCLATER, Contr. Orn., 1852, p. 83. One specimen, apparently not different from a Fantee example. ‘Bill black; feet dark brown; iris crimson.” Length, 114 mm.; extent, 163.5 mm, AMAURESTHES FRINGILLOIDES (Lafresnaye). Ploceus fringilloides LAFRESNAYE, Mag. de Zool., 1835, pl. 48. Amauresthes fringilloides REICHENBACH, Singv., 1861, p. 86, pl. 44, fig. 322. One specimen, April 22, 1897, in fresh plumage, with molt not quite completed. Length, 135 mm.; expanse, 195 mm. Family HIRUNDINID&. HIRUNDO NIGRITA Gray. Hirundo nigrita GRAY, Gen. Birds, I, 1845, pl. 40. Three specimens, two males and one female, April 13 and 28, 1897, all showing some indication of incomplete molt. The latter seems to be somewhat less purplish than the males, but there is no other apparent difference. One of the males measures, length, 142 mm.; extent, 303 mm. ‘Bill and feet black.” Family DICRURID %. DICRURUS MODESTUS ATACTUS, new subspecies. Chars. subsp.—Similar to Dicrurus modestus modestus, but plumage of body, particularly above, much more glossy, the velvety appearance almost entirely absent; no conspicuous contrast between the feathers of head and back. Wing, 118 mm.; tail, 104 mm.; exposed culmen, 22 mm.; tarsus, 20 mm.; middle toe, 15 mm. Description.—Type, sex unknown, No. 147202, U.S.N.M.; Fantee, West Africa. General color glossy black, with bluish metallic reflec- tions, these most evident on the upper parts, nearly absent on the throat; top of head almost uniform with the back, though slightly greenish, as are the upper tail-coverts; wings brownish black, the lesser coverts like the back, the remaining coverts and the quills glossed eS 36 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. externally with greenish blue; tail brownish black, glossed exteriorly with greenish. Comparison of specimens from Fantee and Liberia with an adult from Gaboon seems to indicate the existence of two races of Dicrurus modes- tus. True modestus comes from Prince’s Island, and according to Dr. Sharpe! D. coracinus from Gaboon is identical with modestus, as it — should be from a geographical standpoint, thus leaving the northern form without a name. Dr. Sharpe also mentions! the more glossy appearance of specimens from the Gold Coast, but without separating them from modestus. Mr. Currie obtained one specimen, an immature male, apparently identical with examples from Fantee. Length, 225 mm.; expanse, 251 mm. It was shot in the forest, where the species is stated by Mr. Currie to be not uncommon. Golah name, ‘ Zila-we.” DICRURUS ATRIPENNIS Swainson. Dicrurus atripennis SWAINSON, Birds W. Africa, I, 1837, p. 256. One adult male, March 16, 1897. It is in process of molt, wings and tail being imperfect. Taken in the forest; ‘not uncommon.” Length, 235 imm.; expanse, 321 mm.; ‘bill and feet black; iris crimson.” Golah name, ‘ Zala-we.” Family LANIID A. LANIARIUS MULTICOLOR Gray. Laniarius multicolor GRAY, Gen. Birds, I, 1845, p. 299, pl. 72. The collection contains -one adult male of this brilliantly colored shrike. Length, 230 mm.; expanse, 317 mm. Mr. Currie states that no others were seen. Golah name, ‘Dah-zo.” Bill in life black; feet drab; eyelid purplish. Family STURNIDS. PHOLIDAUGES LEUCOGASTER (Gmelin). Turdus leucogaster GMELIN, Syst. Nat., I, 1788, p. 819. Pholidauges leucogaster CABANIS, Mus. Hein., I, 1850, p. 198. One specimen, an immature male in the plumage of the female. ‘‘Bill black, paler at base below; feet black; iris lemon.” Length, 184 mm.; extent, 306 mm. Family PRIONOPID AQ. SIGMODUS CANICEPS Bonaparte. Sigmodus caniceps BONAPARTE, Consp. Av., I, 1850, p. 365. One adult male, apparently a typical specimen. Length, 225 mm.; extent 348 mm. ‘Tris bright yellow; bill deep crimson, lighter ‘ Cat, Birds Brit. Mus., III, 1877, p. 233, No. 1182. BIRDS COLLECTED IN LIBERIA—OBERHOLSER. 37 toward the tip; feet vermilion; naked ring around eye orange red.” Known to English-speaking Liberians as “‘ Baboon bird ;” Golah name, “Way-ye.” FRASERIA PROSPHORA, new species. Chars. sp.—Similar to Fraseria ochreata; the crown, sides of head, and neck not blackish, but uniform in color with the back; lower sur- face not pure white, the markings not sharply defined. Description.—Adult, sex undetermined, No. 161784, U.S.N.M.; Mount Coffee, Liberia, February 19, 1897; R. P. Currie. Upper surface uni- form slate color, slightly more bluish on lower back and rump; wing- quills and tail-feathers dull brownish black, edged externally with slate color; sides of head and neck like the crown. Lower parts grayish white; the sides and flanks slate gray; the jugulum a lighter Shade of same, spotted with darker; the feathers of breast and abdo- men with narrow slate-gray tips, producing a slightly squamated effect; lower tail-coverts each with a subbasal, V-shaped marking, and a narrow terminal bar of slate color; inferior wing-coverts brown- ish slate, the feathers broadly tipped with white; axillars white ter- minally, slate gray basally; thighs slate gray, edged with white. “Bill slate black; feet plumbeous.” Wing, 87.5 mm.; tail, 73 mm.; exposed culmen, 14 mm.; tarsus, 21.5 mm.; middle toe, 14 mm. This new form is distinguishable at sight from Fraseria ochreata by the lighter and uniform shade ef the upper surface, including the sides of head and neck; by the grayish instead of pure white under parts, the markings of which are much paler and much less sharply defined, giving a clouded and mottled appearance in place of a clear-cut squamate effect, particularly on breast and jugulum. The crissum is irregularly barred with slate color instead of being pure white. While it is barely possible that prosphora is a race of ochreata, and thus its representative in Liberia, yet the two birds are so different that until - the connection be established it seems better to accord them both specific rank. U. S. NATIONAL MUSEUM : PROCEEDINGS, VOL. XXII PL. VII YOUNG ‘‘T00-TOO” BIRDS (Centropus senegalensis) Mount Coffee, Liberia. From a photograph by Mr. G. N. Collins. A LIST OF THE BITING LICE (MALLOPHAGA) TAKEN FROM | BIRDS AND MAMMALS OF NORTH AMERICA. By VERNON L. KELLOGG, M. S., Professor of Entomology, Leland Stanford Junior University. Within the last few years a beginning in the systematic study of the North American Mallophaga has been made. This study has pro- gressed sufficiently to make it worth while to prepare a list of the Mal- lophaga so far recorded as having been collected from birds and mammals found in North America.’ By this is meant the record of col-. lection actually made from American host specimens, and not from host species common to both Europe and America, from which parasites are as yet recorded only from European host specimens. Where Mal- lophaga have been found common to American and European hosts, the foreign as well as the native hosts are given. As the synonymy for the species of Mallophaga found on American hosts has been given in both Professor Osborn’s and my own papers (these papers including practically all the American records), I have not repeated the synonymy in the list. All the American records as originally published are included in the list, no attempt having been made to correct the synonymy. Probably not more than half « dozen species in the list are liable to such correction. The American specimens referred to species originally found on European hosts have been so referred on the authority of the original descriptions and illustrations of European authors. The great importance of the correctness of these determina- tions, because of the interesting problems in distribution presented by this specific identity of European and American specimens, led me to take to Europe a large number of American specimens for the sake of comparison with the Huropean types. This comparison revealed the fact that these determinations of the identity of the American speci- mens with European species can be relied on. In addition to the list of parasites with hosts there is given also a list of hosts with parasites, so that reference to the American records can be readily made from either parasite or host. Students beginning 1Some birds from Panama are included in this list. ‘‘ North America,” according to the American Ornithologists’ Union check list, ‘‘includes the continent of North America north of the present United States and Mexican boundary, and Greenland and the peninsula of Lower California, with the islands naturally belonging thereto.” PROCEEDINGS U. S. NATIONAL MUSEUM, VOL. XXII—No. 1183. 3g 40 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. the study of the Mallophaga will soon discover the advantage of work- ing from the basis of known host. It is hoped that the list may serve as a convenient basis for the study of the phenomena of the distribution of the Mallophaga, one of the most interesting phases of the study of this group of insects. Types and cotypes of my own and of Osborn’s are now deposited in the U.S. National Museum. BIBLIOGRAPHY. There are very few records in the European literature of the Mallo- phaga of specimens taken from North American hosts. In very rare instances specimens have been taken from the skin of some North American bird in the collection of some European museum, or parasites have been collected in zoological gardens from representatives of some bird species peculiar to North America. For example, Piaget col- lected two species of Mallophaga from specimens of the Bob White (Colinus virginianus) and California Partridge (Callipepla californica) in the zoological garden at Rotterdam. I have since found. both of these species of Mallophaga on the same hosts in their native habitat. All of these records are referred to in the list. The following are the American papers containing the records upon which the list is based. For an extended bibliography of the foreign and American literature of the Mallophaga see Osborn' and Kellogg.’ Packard A.S. Certain Parasitic Insects, American Naturalist, 1870, IV, p. 83, ill. Leidy, J. Proc. Acad. Nat. Sci. Phila., 1878, p. 100. Osborn, Herbert. Notes on Mallophaga and Pediculidze, Canadian Entomologist, 1884, XII, p. 197. The Pediculi and Mallophaga Infesting Man and the Lower Animals, Bull. No. 7, Div. of Ent., U.S. Dept. of Agric., 1891. Insects Affecting Domestic Animals, Bull. No. 5 new ser., Div. of Ent., U.S. Dept. of Agric., 1896. Kellogg, V.L. New Mallophaca: I(Contributions to Biology from the Hopkins Sea- side Laboratory, IV, 1896). New Mallophaga, II (Contributions to Biology from the Hopkins Seaside Labo- ratory, VII, 1896). Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallo- phaga, II (Contributions to Biology from the Hopkins Seaside Laboratory, XIX, 1899). Kellogg, V. L., and Chapman, B. L. Mallophaga from Birds of California, in New Mallophaga, III (Contributions to Biology from the Hopkins Seaside Labora- tory, XIX, 1899). Chapman, Bertha L. Two New Species of Trichodectes (Mallophaga). Entomologi- cal News, 1897, VIII, p. 185, pl. rx. CLASSIFICATION AND KEYS. The position of the Mallophaga among insects is discussed briefly in my New Mallophaga.* The latest classification of insects assigns to the Mallophaga the position of an independent order. ‘The affinities of the 1Insects Affecting Domestic Animals, Bull. No. 5, new ser., 1896, Div. of Ent., U.S. Dept. of Agric., p. 292. 2New Mallophaga, I, 1896, pp. 35, 40. * Volume I, 1896, pp. 57-59. NO. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. Algh order are in general with the platypterous pseudo-neuropteroid group comprising the Termites, Psocids, and Perlids, and are in particular with the Psocide. In the New Mallophaga! I refer to the correspond- ence between the peculiarly specialized mouth structure of the Mallo- phaga and the Psocid, and the recent careful study by Mr. R. E. Snod- grass” on the anatomy of the Mallophaga reveal other particulars of essential structural agreement between the two groups. As to the arrangement of the members of the order, I have proposed ° the adoption of a primary grouping into two suborders, corresponding with Nitzsch’s original division of the group into two families. In each of these suborders there are two families, one family of each suborder infesting mammals exclusively and comprising but a single genus, the other family of each suborder, comprising several genera, infesting birds exclusively. Mr. Snodgrass’s anatomical studies present new and ‘important characters for the subdivision of the order which do not modify the original classification, but strengthen it and put it on a more thoroughly scientific basis. These new characters have been introduced into the following keys. I have made some other changes in the statement of the characters of the subordinate groups, based on my general study ot the order and use of the keys as heretofore pub- lished. ANALYTICAL KEY TO SUBORDERS OF MALLOPHAGA. With filiform, 3- or5-segmented, exposed antenne; no labial palpi; mandibles verti- cal; cesophageal sclerite and accompanying glands usually present and normal; meso- and metathoracic segments fused; crop a saclike diverticulum; ingluvial glands present; testes, four; egg tubes, five........-.-..-2------- ISCHNOCERA. With clavate or capitate, 4-segmented, concealed antenne; with 4 segmented labial palpi; mandibles horizontal; cesophageal sclerite and accompanying glands absent or modified; meso- and metathoracic segments with sutural line usually | visible; crop, simple; ingluvial glands, absent; testes, six; egg tubes, three to TINE) SESS SRSA ES StS OSS ae are aise Care e Une eteg ees arama yee ears a mn AMBLYCERA. ANALYTICAL KEY TO GENERA OF THE SUBORDER ISCHNOCERA. A, With 3-segmented antenne; tarsi with one claw; infesting mammals (family MPriChoOdectides) wate ee ss eee eee eae Trichodectes Nitzsch. AA. With 5-segmented antenne; tarsi with two claws; infesting birds (family Philopteride). B. Antenne similar in both sexes. C. Front deeply angularly notched ..-----...-....----. Akidoproctus Piaget. CC. Front convex, truncate, or rarely with a curving emargination, but never angularly notched. D. Species broad and short, with large, movable trabecule (at the ante- rior angle of antennal fossa). E. Forehead with a broad transverse membranous flap projecting beyond lateral margins of the head in the male, barely pro- jecting: in thefemale---..-..252--22.. 222. Giebelia Kellogg. EE. Without such membranous flap- -.........-Docophorus Nitzsch. DD. Species elongate, narrow, with very small or no trabecule. Nirmus Nitzsch. ! Volume II, 1896, p. 468. 2 New Mallophaga, ITI, 1899. ° New Mallophaga, I, pp. 59-63. 42 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. BB. Antenne differing in the two sexes. C. Species wide, with body elongate-oval to suborbicular. D. Temporal margins rounded; last segment of abdomen roundly emar- ginated; antennz of male without appendage, third segment VELYAlOM Oe ie Soe ee eae Hurymetopus Taschenberg. DD. Temporal margins usually angulated ; last segment of abdomen convex, rarely angularly emarginated, with two points. K. First segment of antenna of male large, sometimes with an appendage; third segment always with an appendage. Goniodes Nitzsch. EE. First segment of antenna of male enlarged, but always with- out appendage; third segment without appendage; last segment of abdomen always rounded behind. Goniocotes Nitzsch. CC. Species elongate, narrow, sides subparallel. D. Third segment of antenna of male without an appendage. Ornithobius Denny. DD. Third segment of antenna of male with an appendage. E. Front deeply angularly notched.... - Bothriometopus Taschenberg. EE. Front not angularly notched. F. Antenne and legs long; a semicircular oral fossa. Lipeurus Nitzsch. FF. Antenne and legs short; oral fossa narrow, elongate, extend- ing as a furrow to the anterior margin of the head. Oncophorus Rudow. ANALYTICAL KEY TO GENERA OF THE SUBORDER AMBLYCERA. A. Tarsi with one claw; infesting mammals (family Gyropidie) -..Gyropus Nitzsch. AA. Tarsi with two claws; infesting birds (excepting Boopia?); (family Liotheidz). B. Ocular emargination distinct, more or less deep. C. Forehead rounded, without lateral swelling; antenne projecting beyond border of the head._...-....-....--.---- Colpocephalum Nitzsch. CC. Forehead without strong lateral swellings. D. Antenne projecting beyond border of the head; temporal angles projecting rectangularly; eye large and simple--. Boopia Piaget. DD. Antennz concealed in groove on under side of the head; temporal angles rounded or slightly angular; eye divided by an emargi- nation and fleck. E. Mesothorax separated from metathorax by a suture. Trinoton Nitzsch. EE. Meso- and metathorax fused; no suture. Lemobothrium Nitzsch. BB. Ocular emargination absent or very slight. C. Sides of the head straight or slightly concave, with two small, laterally projecting labral lobes.....-.-..-.....--. Physostomum Nitzsch. CC. Sides of the head sinuous; forehead without labral lobes. D. Ocular emargination filled by a strong swelling; sternal markings forming a quadrilateral without median blotches. Nitzschia Denny. DD. Ocular emargination without swelling, hardly apparent or entirely lacking; median blotches on sternum. EK. Very large; with two 2-pointed appendages on ventral aspect of hind head; anterior coxze with very long lobelike appendages. Ancistrona Westwood. EER. Small or medium; without bipartite appendages of hind head. Menopon Nitzsch. NO. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 43 Sale ORE MeATIE EO ee AGeAG Order MALLOPHAGA Nitzseh. Suborder ISCHNOCERA Kellogg. Family PHILOPTERID Al Burmeister. Genus DOCOPHORUS Nitzsch. Docophorus NiTzscH, Germar’s Mag. f. Ent., 1818, III, p. 289. Docophorus kansensis KELLOGG, New Mallophaga, I, 1896, p. 91, pl. 111, fig. 8. From Colymbus nigricollis californicus (Lawrence, Kansas). Docophorus graviceps KELLOGG, New Mallophaga, I, 1896, p. 82, pl. 111, fig. 3. From Urinator pacificus (Bay of Monterey, California) and Fulica americana (Pacific Grove, California). — Docophorus colymbinus DENNY, Monograph. Anoplur. Brit., 1842, p. 80, pl. vi11, fig. 8 —OsBorn, Insects Affecting Domestic Animals, 1896, p. 217. Recorded by Osborn from Urinator lumme (Burnett collection) ; taken by Kellogg from Urinator pacificus (Bay of Monterey, Cali- fornia); this record not before published. Recorded by European authors from Colymbus septentrionalis, C. arcticus, CO. glacialis, and Tadorna cornuta. Docophorus acutipectus KELLOGG, New Mallophaga, I, 1896, p. 84, pl. 111, fig. 4, From Cerorhinca monocerata (Bay of Monterey, California). Docophorus insolitus KELLOGG, New Mallophaga, 1, 1896, p. 94, pl. Iv, fig. 5. From Ptychoramphus aleuticus (Bay of Monterey, California). Docophorus montereyi KELLOGG, New Mallophaga, I, 1896, p. 87, pl. 111, fig. 6. From Ptychoramphus aleuticus, Synthliboramphus antiquus, and Brachyramphus marmoratus (all from the Bay of Monterey, Cali- fornia). Docophorus atricolor KELLOGG, New Mallophaga, I, 1896, p. 93, pl. II, ile, Bh From Synthliboramphus antiquus and Brachyramphus marmoratus (Bay of Monterey, California). Docophorus procax KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 54, pl. v, fig. 1. From Cepphus columba (Bay of Monterey, California). Docophorus calvus KELLOGG, New Mallophaga, I, 1896, p. 79, pl. 111, fig. 1. From Uria troile californica (Bay of Monterey, California). 44 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Docophorus lari DENNY, Monograph. Anoplur. Brit., 1842, p. 89, pl. v, — fig. 9. —KELLOGG, en Mallophaga, I, 1896, p. "98, pl. Iv, fig. 4,— OsBoRN, Insects Affecting Domestic iris 1896, p. 217.— KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 4. KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Malloph- aga, III, 1899, p. 56. Recorded by Kellogg from Larus argentatus smithsonianus, L. canus, L. occidentalis, L. brachyrhynchus, L. glaucescens, L. heer- manni, L. vege, L. delawarensis, L. glaucus, and Rissa tridactyla pollicaris (all from Bay of Monterey, California); also from L. delewarensis (Lawrence, Kansas); Larus sp. (Baja California), and LT. glaucescens (North Pacific Ocean, off Alaska); also males, females, and young, hence probably not stragglers, from Colymbus nigricollis californicus and Urinator lumme (Bay of Monterey, Cali- fornia). Recorded by Osborn from Larus philadelphia (Burnett collection) and from “herring gull” (Cassino collection). Recorded by European authors from a dozen or more species of Larus (including some of the species listed above), and from Lest- ris pomarinus and crespictatus, Sula alba, Tringa islandica (proba- bly mistaken determination), and Brachyotus otus. Docophorus melanocephalus BURMEISTER, Handb. d. Ent., II, 1839, p. 426.—KELLOGG, New Mallophaga, I, 1896, p. 99, Bk IV, fig. Gas OsBorN, Insects Affecting Domestic Animals, 1896, p. 218.— Kuroce and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 56. Recorded by Kellogg from Sterna maxima (Bay of Monterey, California); by Osborn from ‘great Cayenne tern” (Burnett col- lection); by Kellogg and Chapman from Stercorarius pomarinus (Bay of Monterey, California). Recorded by European authors from Sterna caspia, S. cantiaca, S. bergi, and Larus ridibundus and L. cirrocephalus (Paraguay). Docophorus occidentalis KELLOGG, New Mallophaga, I, 1896, p. 89, pl. Ill, fig. 7. From Fulmarus glacialis glupischa and F. g. rodgersii, and prob- ably as a straggler, from Oidemia perspicillata (all hosts from Bay of Monterey, California). Docophorus validus KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 56, pl. v, fig. 2. From Puffinus gavia (Bay of Monterey, California). Docophorus phaetonus OSBORN, Proc. U. S. Nat. Museum, 1889, XII, p. 189. From Phaeton aethereus (Lower California or Panama). Docophorus bassanae DENNY, Monograph. Anoplur. Brit., 1842, p. 110, pl. v1, fig. 3; pl. vir, fig. 3.—OsBoRN, Insects Affecting Domestic Animals, 1896, p. 217. No. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 45 Recorded by Osborn; “host unknown, probably the gannett (Burnett collection).” Recorded by European authors from Sula bassana, Phalacrocoraz . carbo, and Sterna hirundo. Docophorus icterodes Nirzscu, Germar’s Mag. d. Ent., 1818, III, p. 290.—KELLOGG, New Mallophaga I, 1896, p. 96, pl. Iv, fig. 1.— OSBORN, Insects Affecting Domestic Animals, 1896, p. 217.— KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 4. KELLOGG and CHAP- MAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 58. Recorded by Kellogg from Oidemia perspicillata, Hrismatura rubida, and Merganser serrator (Bay of Monterey, California), and from Anas boscas, Anas carolinensis, Aythya americana, Aythya affinis, and Dafila acuta (Lawrence, Kansas), and from Merganser serrator (Kadiak Island, Alaska). Recorded by Osborn as “a very common species on many kinds of ducks. Specimens have been noted in the Cassino, Burnett, and Stejneger collections, and also taken at Ames, lowa.” Recorded by Kellogg and Chap- man from Aythya marila nearctica and Aythya affinis (Palo Alto, California). Recorded by European writers from Mergus albellus, M. merganser, Anas rufina, A. boscas, A. fuligula, A. glacialis, A. albifrons, A. clypeata, A. crecca, A. stelleri, Fuliguia marila, F. ferina, and Mareca penelope. Recorded by Piaget as “sur toute espece de canards.” Piaget believes Docophorus natatorum Rudow,! from Platypus glacialis, Bernicla torquata, Chenalopex aegypticus, and Anas fusca, to be D.icterodes. He considers D. adustus Giebel,’ from a domestic duck, D. brevimaculatus Giebel,? from Anser albi- frons, and D. brunneiceps Giebel,’ from Anser cygnoides as varieties merely of D. icterodes. Piaget also refers to a Docophorus, from Podiceps cristatus, as a variety of icterodes. Docophorus cygni DENNY, Monograph. Anoplur. Brit., 1842, p. 95, pl. 1, fig. 1—OsBoRN, Notes on Mallophaga and Pediculidze, Canad. Ent., 1884, X VI, p. 197; Insects Affecting Domestic Animals, 1896, p. 217. S Recorded by Osborn from Olor buccinator (?) (Ames, Iowa). Recorded by European authors from Cygnus bewickii, CO. musi- cus, Dendrocygna arborea, and the “bean goose” (Denny, Great Britain). Docophorus sphenophorus NiTzscu (ed. Giebel); Zeitschr. f. ges. Natur- wiss., XX VIII, 1866, p. 310.—OsBoRrn, Insects Affecting Domestic Animals, 1896, p. 217. ! Zeitschr. f. ges. Naturwiss., XX XV, 1870, p. 453. *Insecta Epizoa, p. 113, 46 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Recorded by Osborn from Cassino collection, “‘ without indication of host or locality, but it is doubtless American, probably from spoonbill” (Ajaja ajaja). Recorded by European authors from Platalea leucorordia and Ibis religiosa. Docophorus bisignatus NiTzscu (ed. Giebel), Zeitschr. f. ges. Naturwiss., XXVIII, 1866, p. 362.—OsBOoRN, Insects Affecting Domestic Animals, 1896, p. 217. Recorded by Osborn from Ibis (Guara) alba (collection of C. B. Cook). : Recorded by Nitzsch-Giebel from Ibis faleinellus. Docophorus quadraticeps KELLOGG, New Mallophaga, I, 1896, p. 85, pl. Int, fig. 5. From Fulica americana (Bay of Monterey, California). Docophorus minuto-trabeculatus OsBoRN, Insects Affecting Domestic Animals, 1896, p. 221. From Fulica americana (‘collected from a stuffed bird in the museum of the Iowa Agricultural College”). Docophorus pertusus NirzscH, Germar’s Mag. d. Ent., 1818, III, p. 290.—KELLOGG, New Mallophaga, I, 1896, p. 97, pl. Iv, figs. 2, 3. Recorded by Kellogg from Fulica americana (Lawrence, Kansas, and Bay of Monterey, California); also from Hrismatura rubida and Colymbus nigricollis californicus (Bay of Monterey, California). Recorded by Nitzsch-Giebel from Fulica atra (probably Europe). Docophorus fusiformis DENNY, Monograph. Anoplur. Brit., 1842, p. 84, pl. 1, fig. 2.—OsBorn, Insects Affecting Domestic Animals, 1897, p. 217.— KELLOGG and CHAPMAN, Mallophaga from Birds of Cali- fornia, in New Mallophaga, ITI, 1899, p. 58, pl. V, fig. 3. Recorded by Osborn (a typographical error makes the species read ‘ fissiformis”) from ‘‘ black-billed sandpiper” (Burnett collec- tion). Recorded by Kellogg and Chapman from Tringa minutilla (Palo Alto, California). Recorded by European authors from Tringa minuta and T. sub- arquata. Piaget believes D. variabilis Denny,! from Tringa varia- bilis, and D. canuti Denny,” from Tringa canutus, to be merely varie- ties of fusiformis. Docophorus cordiceps GIEBEL, Insecta. Epizoa., 1874, p. 103.—KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. Vv, pl. 1, fig. 2. Recorded by Kellogg from Tringa macularia (Panama) and Tringa sp. (Baja California). Recorded by European authors from TYotanus glareola, T. macu- latus, T. calidris, T. hypoleucos, T. fuscus, T. ochropus, Calidris aren- 1 Monograph. Anoplur. Brit., p. 71, pl. 111, fig. 4. 2Idem, p. 84, pl. 111, fig. 5. NO. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. ALG aria, Machetas pugnax, Strepsilas interpres, Charadrius hiaticula. Denny also records it from Lestris parasiticus and L. pomarinus, and Grube from Larus richardsoni and Larus fuscus. I suspect that Denny and Grube have confounded cordiceps and lari here, especially as Grube records lari from Tringa islandica. Docophorus testudinarius DENNY, Monograph. Anoplur. Brit., 1842, p. 96, pl. I, fig. 6. —-OSBORN, Notes on Mallophaga and Pediculide, Canad. Ent., 1884, XVI, p. 197; Insects Affecting Domestic Animals, 1896, p- 217. Recorded by Osborn from Numenius longirostris (Ames, lowa) and from Bartramia longicauda (Burnett collection). Recorded by European authors from Numenius arquatus. Docophorus fuliginosus KELLOGG, New Mallophaga, I, 1896, p. 80, pl. 11, fig. 2.—_ KELLOGG and CHAPMAN, Mallophaga from Birds of Cali- fornia, in New Mallophaga, III, 1899, p. 59. Recorded by Kellogg from Charadrius squatarola (Lawrence, Kansas, and Palo Alto, California); by Kellogg and Chapman from Charadrius squatarola and Aegialitis semi-palmata (Pacific Grove, California). Docophorus platystomus Nirzscu, Burmeister, Handb. d. Ent., 1839, II, p- 426.—OsBorN, Notes on Mallophaga and Pediculide, Canad. Knt., 1884, X VI, p. 197; Insects Affecting Domestic Animals, 1896, p. 216. Recorded by Osborn from Accipiter velox (Rhode Island), Buteo Swainsont (lowa?), and Aquila imperialis (Burnett collection). Recorded by European authors from Buteo vulgaris and from ‘‘rough-legged buzzard” (Denny, Great Pee ; also a variety by Piaget from Haliastur indus. Docophorus buteonis PACKARD, American Naturalist, 1870, IV, p. 93, pl. 1, fig. 3.—OsBorn, Insects Affecting Domestic Animals, 1896, p. 218. Recorded by Packard from Buteo lineatus (America); by Osborn from same host (probably Hanover, New Hampshire), and from Tryannus atra (Burnett collection). Docophorus taurocephalus KELLOGG, New Mallophaga, II, 1896, p. 471, pl. Lxy, fig. 1. From Archibuteo lagopus sancti-johannis (Lawrence, Kansas). Docophorus pictus GIEBEL, Insecta Epizoa, 1874, p. 74. KELLOGG and - CHAPMAN, Mallophaga from Birds of California, in New Mallo- phaga, III, 1899, p. 59, pl. V, fig. 4. Recorded by Kellogg and Chapman from Aquila chrysetos (Palo Alto, California). Recorded by Nitzsch-Giebel from same host. 48 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Decophorus halieti OsBoRN, Insects Affecting Domestic Animals, 1896, p. 218. From Halictus leucocephalus (Florida). Docophorus rostratus NrrzscH, Burmeister, Handb. d. Ent., 1839, I, p. 4927,—KELLOGG, New Mallophaga, II, 1896, p. 486, pl. LXxvI, fig. 5.OsBorN, Insects Affecting Domestic Animals, 1896, p. 218. Recorded by Kellogg from Strix pratincola (Soquel, California) ; by Osborn from same host, collection of Prof. Lawrence Bruner (Nebraska). Recorded by European authors from Strix flammea. Docophorus cursor NITzscH, Burmeister, Handb. d. Ent., 1839, II, p. 426.— OsBORN, Notes on Mallophaga and Pediculide, Canad. Ent., 1884, XVI, p.197.—KELLOGG, New Mallophaga, IT, 1896, p. 484, pl. LX v1, fig. 1.—OspBorn, Insects Affecting Domestic Animals, 1896, p.216.— KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, ITI, 1899, p. 60. Recorded by Osborn fon Otus vulgaris var wilsonii (Asio wil- ‘ sonianus) (Ames, Iowa, and Lincoln, Nebraska); by Kellogg from Bubo virginianus (Lawrence, Kansas), and by Kellogg and Chap- man from Asio wilsonianus (Ontario, California). Recorded by European authors from Strix bubo, S. otus, and S. brachyotus. [Docophorus syrnii PACKARD, description? In Gurlts “Neues Verzeichniss d. Thiere, auf welchen Schma- rotzer-Insekten leben”, Archiv f. Naturgeschichte, XLIV, No. 1, p. 185, ‘‘ Docophorus syrnii Packard” is recorded as parasite of Stria nebulosa. Neither Osborn nor I have been able to find the original record for this species. | Docophorus speotyti OSBORN, Insects Affecting Domestic Animals, 1896, p- 222, fig. 144. KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 60. Recorded by Osborn from Speotyto cunicularia hypogea (Lincoln, Nebraska, and Fort Collins, Colorado); recorded by Kellogg and Chapman from Syrnium nebulosum (La Honda, California). Docophorus bubonis OSBORN, Insects Affecting Domestic Animals, 1896, p- 219. From Bubo virginianus (Pennsylvania). Docophorus ceblebrachys Nirzscu, ed. Giebel, Zeitsch. f. ges. Naturwiss., 1861, X VII, p. 528.— KELLOGG, New Mallophaga, II, 1896, p. 485, pl. LXxvi, fig. 3.—OsBoRn, Insects Affecting Domestic Animals, 1896, p. 216.— KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 61. Recorded by Kellogg from Nyctea nyctea (Lawrence, Kansas); by Osborn from same host (lowa and other localities in America) ; by Kellogg and Chapman from same host (Pullman, Washington). Recorded by European authors from same host, ¥ 4 No. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 49 Docophorus coccygi OSBORN, Insects Affecting Domestic Animals, 1896, p. 222, fig. 143. From ‘“yellow-billed cuckoo” (Coceyzus americanus) (Lincoln, Nebraska). Docophorus latifrons NitzscH, Germar’s Mag. d. Ent., 1818, III, p. 290.— KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 5, pl.1, figs. 5 and 8. From Coccyzus californicus occidentalis (Baja California). Recorded by European authors from Cuculus canorus and in a single instance from Yuna torquilla (Denny, England). Docophorus evagans KELLOGG, New Mallophaga, IT, 1896, p. 480, pl. Lx v1, fig. 2. From Dryobates pubescens (Lawrence, Kansas). Docophorus superciliosus Nirzscu, Burmeister, Handb. d. Ent., 1839, II, p. 427.—OsBorN, Insects Affecting Domestic Animals, 1896, p. 216. Recorded by Osborn from Dryobates villosus (Cassino collection) (North America). Recorded by European authors from Picus major and P. viridis. Docophorus singularis KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 61, pl. v, fig. 5. From Dryobates nuttalli (lone, California). Docophorus californiensis KELLOGG, New Mallophaga, II, 1896, p. 483, pl. LXvI, fig. 6—KELLOGG, Mallophaga from Birds of Panama, Baja California and Alaska, in New Mallophaga, III, 1899, p. 6.— KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 63. . Recorded by Kellogg from Melanerpes formicivorous bairdii (Palo Alto, California) and from M. f. angustifrons (Baja California); by Kellogg and Chapman from Sphyrapicus thyroideus (Kidorado County, California) and from Xenopicus albolarvatus (Eldorado County and Kings River Canyon, California). Docophorus alienus KELLOGG, New Mallophaga, IT, 1896, p. 473, pl. Lxv, fig. 2. From Colaptes auratus (Lawrence, Kansas). Docophorus jungens KELLOGG, New Mallophaga, II, 1896, p. 481, pl. Lx v1, fig. 4. From Oolaptes auratus (Lawrence, Kansas). Docophorus rufus KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 7, pl. 1, figs. 6 and 9.— KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 63. Recorded by Kellogg from Myiarchus cinerascens nuttingi (Baja California); by Kellogg and Chapman from Myiarchus cinerascens (Ontario, and Alameda County, California). Proc. N. M. vol. xxii—4 50 PROCEEDINGS OF THE NATIONAL MUSEUM. VO. XXII. Docophorus fusco-ventralis OSBORN, Insects Affecting Domestic Animals, 1896, p. 221.—KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 64. Recorded by Osborn from Contopus virens (Cornell University collection, also Burnett collection) (North America); by Kellogg and Chapman from Myiarchus cinerascens (Palo Alto, California). Docophorus distinctus KELLOGG, New Mallophaga, II, 1896, p. 477, pl. LXV, fig. 9. From Corvus corax sinuatus (Colorado). Docophorus corvi OSBORN, Insects Affecting Domestic Animals, 1896, p. 220, fig. 142. From Corvus americanus (Ames, Iowa). ‘Thisis probably Pack- ard’s Lipeurus corvi, which was evidently described from an imma- ture specimen” (Osborn). s Docophocus transpositus KELLOGG, New Mallophaga, II, 1896, p. 478, pl. LXV, fig. 6. From Molothrus ater (Lawrence, Kansas). Docophorus agelaii OSBORN, Insects Affecting Domestic Animals, 1896, p. 220. From Agelaius pheniceus (North America). Docophorus quiscali OSBORN, Insects Affecting Domestic Animals, 1896, p. 219, fig. 141. From “crow blackbird” (Quiscalus quiscula ?) (Ames, lowa). Docophorus compar PIAGET, Les Pediculines, 1880, p. 61, pl. vit, fig. 1.— OSBORN, Insects Affecting Domestic Animals, 1896, p. 217. Recorded by Osborn from Lowxia curvirostra minor (Ames, Jowa). ° Recorded by Piaget from Lowxia curvirostra (Museum of Leyden). . Docophorus hamatus PACKARD, American Naturalist, 1870, IV, p. 94, pl. Ly Ott. From Hmberiza (Plectrophenax) nivalis (North America). Docophorus mirinotatus KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, ITI, 1899, p. 65, pl. V, fig. 6. From Junco hyemalis thurberi (Kings River Canyon, California). Docophorus communis Nirzscu, Germar’s Mag. d. Ent., 1818, III, p. 290.— KELLOGG, New Mallophaga, II, 1896, p. 486, pl. LxvI, fig. 7.— OsBorN, Insects Affecting Domestic Animals, 1897, p. 216.—KEL- LoGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 9—KELLOGG and CHAP- MAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 64. Recorded by Kellogg from Otocoris alpestris, Agelaius pheniceus, Sturnella magna neglecta, Calcarius lapponicus, Junco hyemalis, No. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 51 Cardinalis cardinalis, Ampelis garrulus, Lanius ludovicianus excubitorides, Harporphynchus rufus, and Merula migratoria (all from Lawrence, Kansas); Icterus bullocki, Oarpodacus purpureus californicus, Carpodacus mexicanus frontalis, Spinus pinus, Spinus psaltria, and Ammodramus sandvicensis (all from Palo Alto, Cali- fornia); Cardinalis cardinalis igneus (Baja California). Recorded by Osborn from Lantus borealis (Ames, lowa) and ‘shore lark” (Otocoris sp.) (Burnett collection). Recorded by Kellogg and Chap- man from the following birds taken in California (in addition to specimens of several of the host species already listed): Mytarchus cinerascens, Hmpidonax difficilis, Otocoris alpestris chrysolema, Cyanocitta stellert frontalis, Aphelocoma californica, Scolecophagus cyanocephalus, Chondestes grammacus strigatus, Zonotrichia leuco- phrys intermedia, Zonotrichia l. gambeli, Zonotrichia coronata, Spizella socialis arizone, Amphispiza belli, Melospiza fasciata samuclis, Pipilo Juscus crissalis, Habia melanocephala, Guiraca coerulea eurhyncha, Piranga ludoviciana, Ampelis cedrorum, Lanius borealis, Lantus ludovicianus gambeli, Vireo solitarius cassini, Dendroica cestiva, Thryothorus bewickivi spilurus, Parus inornatus, Turdus aonalaschke auduboni, Sialia mexicana occidentalis. Recorded by European authors from many species of passerine birds. Docophorus panamensis KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 9, pl. 1. fig. 1. From Phenicothrampis fuscicauda (Panama). Docophorus domesticus KELLOGG, New Mallophaga, IT, 1896, p. 475, pl. LXV, fig.4; Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 10. From Progne subis (Lawrence, Kansas) and Progne subis hesperus (Baja California). Docophorus excisus NiTzscu, Germar’s Mag. d. Ent., 1818, III, p. 290; var. major KELLOGG, New Mallophaga, II, 1896, p. 489. Variety major recorded by Kellogg from Petrochelidon lunifrons and Tachycineta bicolor (Palo Alto, California, and Lawrence, Kansas). Recorded by European authors from Hirundo urbica, H. rustica, HI, domestica, Cypselus apus, and Cotyle riparia. Docophorus laticeps GIEBEL, Insecta Epizoa, 1874, p. 88.—KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 11, pl. 1, figs. 4 and 7. Variety americanus recorded by KELLOGG from Cinclus mexica- nus (Kodiak Island, Alaska). The species recorded by European authors from Cinelus aquaticus. 52 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Docophorus mirus KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 67, pl. V, fig. 7. From Thyrothorus bewickii spilurus (Palo Alto, California). Docophorus rutteri KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 12, pl. 1. fig. 3. From Parus atricapillus occidentalis (Kadiak Island, Alaska). Docophorus sialii OSBORN, Insects Affecting Domestic Animals, 1896, p. 220. From Sialia sialis (Merriam, Colorado). Docophorus incisus KELLOGG, New Mallophaga, IT, 1896, p. 474, pl. Lxv, fig. 3. From Sialia sialis (Lawrence, Kansas) and Ampelis cedrorum (Lawrence, Kansas). Genus NIRMUS Nitzseh. Nirmus Nitzscu, Germar’s Mag. d. Ent., 1818, III, p. 291. Nirmus fuscomarginatus DENNY, Monog. Anoplur. Brit., 1842, p. 136, pl. X, fig. 1—_KELLOGG and CHAPMAN, var. americanus, Mallophaga from Birds of California, in New Mallophaga, ITI, 1899, p. 69, pl. Vv, fig. 9. Variety americanus recorded by Kellogg and Chapman from | Colymbus nigricollis californicus, Cepphus columba, and Larus argentatus smithsonianus (straggler?), all hosts from Bay of Monte- rey, California. The species is recorded by European authors from Podiceps auritus and P. cristatus. Nirmus pacificus KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 70, pl. V, fig. 8. From Lunda cirrhata, Cepphus columba, and Puffinus griseus (Bay of Monterey, California). Nirmus maritimus KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 72, pl. v1, fig. 1. From Cerorhinca monocerata, Ptychoramphus aleuticus, Synthli- boramphus antiquus, and as straggler, probably, from Fulmarus glacialis glupischa (all from Bay of Monterey, California). Nirmus citrinus Nirzscu (ed. Giebel), Zeitschr. f. ges. Naturwiss, 1866, XXVIII, p. 378.—OsBorN, Insects Affecting Domestic Animals, 1896, p. 224. Recorded by Osborn from Synthliboramphus antiquus Simorhyn- chus cristatellus, Sim. pygmeeus, Sim. pusillus (Stejneger collection), and Alleus (Alle) alle (Cassino collection) (North America). Recorded by European writers from Alea torda. NO. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 53 Nirmus triangulatus Nirzscu (ed. Giebel), Zeitschr. f. ges. Naturwiss, 1866, XXVIII, p. 378.—KELLOGG and CHAPMANN, Mallophaga from Birds of California, in New Mallophaga, ITI, 1897, p. 74, pl. VI, fig. 2. Recorded by Kellogg and Chapman from Stercorarius pomarinus (Bay of Monterey, California). Recorded by European authors from Lestris crespidata, L. rich- ardsoni, Stercorarius pomarinus, and Larus canus. Nirmus lineolatus Nirzscu (ed. Giebel), Zeitschr. f. ges. Naturwiss., 1866, XXVIII, p. 376.—K&ELLOGG, New Mallophaga, I, 1896, p. 113, pl. Vi, figs. 7, 8, 9.—OSBoRN, Insects Affecting Domestic Animals, 1896, p. 224. KELLOGG and CHAPMAN (var. atrimarginatus), Mal- lophaga from Birds of California, in New Mallophaga, III, 1899, p. 75. Recorded by Kellogg from Larus argentatus smithsonianus, L. brachyrhynchus, L. glauceseens, L. canus, L. vege, L. occidentalis, LL, heermani, L. californicus, and L, delawarensis (all from Bay of Monterey, California). Recorded by Osborn from ‘herring gull, in collection of S. E. Cassino; Baker collection, Elkhart, Indiana.” Recorded by European authors from Larus canus, L. argentatus, LL. glaucus, and L. tridactylus. Variety atrimarginatus Kellogg and Chapman, recorded by Kel- logg and Chapman from Larus canus, L. vege, L. brachyrhynchus, and Rissa tridactyla pollicaris. Nirmus punctatus Nirzscu, Germar’s Mag. d. Ent., 1818, III, p. 291.— KELLOGG, New Mallophaga, I, 1896, p. 109, pl. v1, figs. land 2; Mal- lophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 13.— KELLOGG and CHAPMAN, Mallo- phaga from Birds of California, in New Mallophaga, IIT, 1899, p. 75. Recorded by Kellogg from Larus occidentalis (Bay of Monterey, California) and Larus sp. (Baja California); by Kellogg and Chap- man from Larus delawarensis (Bay of Monterey, California). Recorded by European authors from Larus ridibundus, L. domin- icanus (Chile), L. crassirostris (China), and L. ichthywtos (Valgas). Nirmus felix GIEBEL, Insecta Epizoa, 1874, p. 175.—_KELLoGG, New Mallophaga, I, 1896, p. 110, pl. v1, figs. 3, 4. Recorded by Kellogg from Larus heermani (Bay of Monterey, California). Recorded bp European authors from same host. Nirmus prestans KELLOGG, New Mallophaga, I, 1896, p. 99, pl. v, figs. bs A From Sterna maxima (Bay of Monterey, California). Nirmus hebes KELLOGG, New Mallophaga, I, 1896, p. 101, pl. v, fig. 3. From Sterna maxima (Bay of Monterey, California). 54 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Nirmus giganticola KELLOGG, New Mallophaga, I, 1896, p. 105, pl. Vv, fig. 6.—KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 75. From Diomedea albatrus (Bay of Monterey, California). Nirmus furvus NirzscuH (ed. Giebel), Zeitschr. f. ges. Naturwiss., 1866, XXVIII, p. 374.—OsBorN, Insects Affecting Domestic Animals, 1896, p. 225.—KELLOGG (var. ravus Kellogg), Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, Tit, 1897, p. 14, pl. 1, fig. 1. Recorded by Osborn from Phalaropus tricolor (Museum, lowa Agricultural College). Recorded by European authors from several species of Totanus and from godwits and plovers. The species is not sufficiently sharply defined to list accurately its hosts. Var. ravus Kellogg from Actitis macularia (Panama). Nirmus piceus Nitzscu, Germar’s Mag. d. Ent., 1818, III, p. 291. N.pileus N., KELLOGG, New Mallophaga, I, 1896, p. 113, pl. v1, fig. 6.—OsBorN, Insects Affecting Domestic Animals, 1896, p. 224. Recorded by Kellogg from Recurvirostra americana (Lawrence, Kansas); by Osborn from same host (Museum, Iowa Agricultural College). Recorded by European authors from Recurvirostra avocetta. The specific name pileus has been used for this form ever since the first reference after Nitzsch, evidently from mere carelessness. Nirmus signatus PIAGET, Les Pédiculines, 1880, p. 186, pl. Xv, fig. 8.— KELLOGG, New Mallophaga, I, 1896, p.112, pl. V1, fig. 5.—_OsBoRN, Insects Affecting Domestic Animals, 1896, p. 224. Recorded by Kellogg from Recurvirostra americana (Lawrence, Kansas); by OSBORN from same host, ‘collected from stuffed bird in museum of Iowa Agricultural College.” Recorded by European authors from Recurvirostra avocetta. Nirmus fissus Nirzscu, Germar’s Mag. Ent., 1818, ITI, p.291.— KELLOGG, var. major Kellogg, Mallophaga from Birds of Panama, Baja Cali- fornia, and Alaska, in New Mallophaga, IIT, 1899, p. 15, pl. 11, fig. 2. Variety major Kellogg, from Tringa sp. (Baja California). The species (under name bicuspis) is recorded by European authors from Charadrius minor, Ch. hiaticula, Ch. morinellus, Totanus calidris, Recurvirostra avocetta, and Vanellus cristatus. Nirmus complexivus KELLOGG and CHAPMAN, Mallophaga from Birds" of California, in New Mallophaga, III, 1899, p. 75, pl. v1, fig. 3. From Calidris arenaria (Pacific Grove, California) and Tringa minutilla (Palo Alto, California). Nirmus actophilus KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 78, pl. v1, fig. 4. From Calidris arenaria (Pacific Grove, California). No. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 55 Nirmus cordatus OSBoRN, Insects Affecting Domestic Animals, 1896, p. 228, pl. 11, fig. aa —KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 80. Recorded by Osborn from Limosa hemastica (Burnett collection) (North America); by Kellogg and Chapman from Limosa fedoa (Bay of Monterey, California). Nirmus incoenis KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 81, pl. v1, fig. 5. From Charadrius squatarola (Pacific Grove, California). Nirmus orarius KELLOGG, New Mallophaga, I, 1896, p. 104, pl. v, fig. 5. From Charadrius dominicus (Lawrence, Kansas). Nirmus opacus KELLOGG and CHAPMAN, Mallophaga from Birds of Cali- fornia, in New Mallophaga, IIT, 1899, p. 83, pl. v1, fig. 6. From digialitis semipalmata (Pacific Grove, California). Nirmus parallelus OSBORN, Insects Affecting Domestic Animals, 1896, p. 229, pl. 11, fig. d. From digialitis vocifera (Burnett collection) (North America). Nirmus boephilus KELLOGG, New Mallophaga, I, 1896, p. 107, pl. v, ike From digialitis vocifera (Lawrence, Kansas). Nirmus abruptus OSBORN, Insects Affecting Domestic Animals, 1896, p. 220° pl. ir, fie. c. From Colinus virginianus (Burnett collection) (North America). Nirmus fuscus NiTzscu (ed. Giebel), Zeitschr. f. ges. Naturwiss., 1861, XVII, pp.523-525.—OsBoRN, Notes on Mallophaga and Pediculide. Canad. Ent., XVI, 1884, p. 197.—KELLoGG, New Mallophaga, II, 1896, p. 499, pl. Lx vil, fig. 7.—OsBoRN, Insects Affecting Domes- tic Animals, 1896, p. 223.—KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 15.—KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 85. Recorded by Osborn from Buteo swainsoni (Ames, Iowa), and Accipiter velox **(Merriam)”. Recorded by Kellogg from Buteo swainsom, Cireus hudsonius, and Archibuteo lagopus sancti-johannis (all from Lawrence, Kansas); and from Falco sparverius peninsularis, FE. peregrinus anatum, and. Buteo borealis lucusanus (all from Baja California); also from Falco sparverius (Panama). Recorded by Kellogg and Chapman from Falco sparverius deserticola, Buteo Lore- alis calurus, and Hlanus leucurus (Palo Alto, California), and from Accipiter atricapillus striatatus (Pullman, Washington). Recorded by European authors from many species of hawks, kites, and eagles (Milvus, Buteo, Falco, Circus, Aquila, and Archi- buteo. 56 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXI. i Nirmus discocephalus Nirzscu, Germar’s Mag. Ent., 1818, III, p. 291.— KELLOGG (var. amblys Kellogg) New Mallophaga, II, 1897, p. 498, pl. Lxvil, fig. 6—OsBoRN, Insects Affecting Domestic Animals, 1896, p. 223. Variety amblys Kellogg, from Haliwetus leucocephalus (Lawrence, Kansas). Recorded by Osborn from same host (Burnett collection) (North America). Recorded by European authors from Halietus albicella. Nirmus splendidus KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 16, pl. 11, figs. 3 and 6, From Polyborus cheriway (Baja California). Nirmus fenestratus NirzscH (ed. Giebel), Zeitschr. f. ges. Naturwiss., 1866, XXVII, p. 117.—OsBorn, Insects Affecting Domestic Animals, 1896, p. 224. Recorded by Osborn from Coccyzus erythrophthalmus (Burnett col- lection) (North America). Recorded by European authors from Cuculus canorus. Nirmus atopus KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, ITI, 1899, p. 18, pl. 11, fig. 4. From Piaya cayana thermophila (Panama). Nirmus marginatus OSBORN, Insects Affecting Domestic Animals, 1896, p- 228, pl. u, fig. b. From Ceophleus pileatus (Burnett collection) (North America). Nirmus candidus Nirzscu (ed. Giebel), Zeitschr. f. ges. Naturwiss., 1866, XX VII, p. 117; XXVIII, p. 368.—OsBorn, Notes on Mal- lophaga and Pediculide, Canad. Ent., 1884, XVI, p. 198; Insects Affecting Domestic Animals, 1896, p. 224. Recorded by Osborn from Melanerpes carolinus (Burnett col- lection), Colaptes auratus, and Picus villosus (locality ?). Recorded by European authors from Picus canus and P. viridis. Nirmus eustigmus KELLOGG, New Mallophaga, II, 1896, p. 493, pl. MVE, lig. - Show Trochilus anne (Palo Alto, California). Nirmus tyrannus OSBORN, Insects Affecting Domestic Animals, 1896, p. 228. From Tyrannus sp. (Burnett collection). Nirmus vulgatus KELLOGG, New Mallophaga, II, 1896, p. 496, pl. LXVII, fig. 5 KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, IIT, 1899, p. 86. Recorded by Kellogg from Carpodacus purpureus californicus, C. mexicanus frontalis, Zonotrichia coronata, Z. gambeli, Pipilo maculatus megalonyx, and Pipilo fuseus crissalis (all from Palo Alto, California); and from Junco hyemalis and Merula migratoria (Law- No. 1183. NORTH AMERICAN MALLOPHAG A—KELLOGG. 5 rence, Kansas). Recorded by Kellogg and Chapman from (in addi- tion to several hosts already listed) Guitraca cwrulea, Chondestes grammacus strigatus, Passerina amena, Parus gambeli, Parus rufescens neglectus, Sialia mexicanus occidentalis, Dendroica cestiva, Helminthophila celata lutescens, Trochilus alexandri, Cyanocitta stellert frontalis, Cinclus mexicanus, Empidonax difficilis, and Myiarchus cinerascens (all from California). Nirmus fedus KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 87, pl. v1, fig. 7. From Myiarchus cinerascens, Sayornis saya, Tyrannus verticalis, Icteria virens longicauda, Lanius ludovicianus gambeli, and Phain- opepla nitens (all from Ontario, California). . Nirmus ductilis KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 89, pl. v1, fig. 8. From Hmpidonax difficilis (Ontario, California). Nirmus rotundatus OSBORN, Insects Affecting Domestic Animals, 1896, p. 226. From Corvus americanus (Ames, Lowa.) Nirmus secondarius OSBORN, Insects Affecting Domestic Animals, 1896, p. 227. From Corvus americanus (Ames, Lowa). Nirmus ornatissimus GIEBEL, Insecta Epizoa, 1874, p. 144.—OsBorn, Insects Affecting Domestic Animals, 1896, p. 224 (var. xantho- cephali Osborn) (loc. eit.). Recorded by Osborn from Agelaius phaniceus (Cassino collec- tion); var. xanthocephali Osborn from Xanthocephalus xantho- cephalus (Fairfax, lowa). Recorded by European authors from Agelaius phenicurus. Nirmus illustris KELLOGG, New Mallophaga, II, 1896, p. 494, pl. Lx vu, fig. 4. From Agelaius pheniceus (Lawrence, Kansas). Nirmus virgatus KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 19, pl. 1, fig. 5. From Amblycercus holosericeus (Panama). Nirmus picturatus OSBORN, Insects Affecting Domestic Animals, 1896, p. 226. From Sturnella magna (Ames, Iowa). Nirmus cyclothorax Nirzscu (ed. Giebel), Zeitschr. f. ges. Naturwiss., 1866, XX VII, p. 117.—OsBorwn, Insects Affecting Domestic Ani- mals, 1896, p. 224. -From Passer domesticus (Laurent collection) and Acanthis lina- ria (*) (C. B. Cook collection). Nirmus thoracicus PACKARD, Amer. Naturalist, 1870, IV, p. 94, pl. 1, fig. 5. From Plectrophenax nivalis (North America). 58 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. Nirmus lautiusculus KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 90, pl. v1, fig. 9. From Amphispiza belli (Ontario, California). Nirmus pallidus OsBorn, Insects Affecting Domestic Animals, 1896, p. 227. From Habia ludoviciana (Ames, Iowa). Nirmus gracilis Nirzscu, Germar’s Mag. Ent., 1818, III, p.291.—OsBorn, Insects Affecting Domestic Animals, 1896, p. 225. Recorded by Osborn from Progne subis (Ames, Iowa). Recorded by European authors from Hirundo urbica. Nirmus longus KELLOGG, New Mallophaga, II, 1896, p. 490, pl. Lxvi1, fig. 1.—K“LLOGG and CHAPMAN, var. domesticus Kellogg and Chapman, Mallophaga from Birds of California, in New Mallo- phaga, IIT, 1899, p. 92. — Recorded by Kellogg from Petrochelidon lunifrons (Palo Alto, California) and Tachycineta bicolor (Lawrence, Kansas). Variety, domesticus Kellogg and Chapman from Chelidon erythrogaster (Palo Alto, California). Nirmus brachythorax GIEBEL, Insecta Epizoa, 1874, p. 134.—OSBORN, Notes on Mallophaga and Pediculidze, Canad. Ent., 1884, X VI, p. 198; Insects Affecting Domestic Animals, 1896, p. 223.—KEL- LOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 93. Recorded by Osborn from Ampelis garrulus (locality?) and Ampelis cedrorum (Ames, Lowa); by Kellogg and Chapman from Ampelis cedrorum (Palo Alto, California). Recorded by European authors from Ampelis garrulus and A. carolinensis. Nirmus peninsularis KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, IIT, 1899, p. 21, pl. m1, fig. 9. From Phainopepla nitens (Baja California). Nirmus interpositus KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 23, pl. 11, ee Te From Dendroica cestiva (Panama). Nirmus orpheus OsBorRN, Insects Affecting Domestic Animals, 1896, p. 227. From Galeoscoptes carolinensis (Burnett collection). Nirmus audax KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 25, pl. 11, fig. 8. From Psaltriparus flaviceps (Baja California). Nirmus simplex KELLOGG, New Mallophaga, II, 1896, p. 492, pl. LXxv1t, fig. 2. From Merula migratoria (Lawrence, Kansas). No. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 59 Genus LIPEURUS Nitzseh. Lipeurus NiTzscu, Germar’s Mag. d. Ent. 1818, III, p. 292. Lipeurus laculatus KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 93, pl. vir, fig. 1. From Stercorius pomarinus and Puffinus creatopus (Bay of Mon- terey, California). Lipeurus ferox GIEBEL, Zeitschr. f. ges. Naturwiss., 1867, X XIX, p. 195.— KELLOGG, New Mallophaga, I, 1896, p. 127, pl. 1x, figs. 1, 2.— KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 97. Lipeurus diomedea FI’. OSBORN, Proc. U.S. Nat. Mus., 1880, XII, p. 189. Recorded by Kellogg from Diomedea ulbatrie (Bay of Monterey, - California). Recorded by Osborn from Diomedea brachyura (lo- cality ?). Recorded by European authors from Diomedea exulans, D. melano- phrys, and D. brachyura. Lipeurus densus KELLOGG, New Mallophaga, I, 1896, p. 114, pl. v1, figs. 1, 2; Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, ITI, 1899, p. 28, pl. 11, fig. 2—KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallo- phaga, ITI, 1899, p. 96. Recorded by Kellogg from Diomedea albatrus (Bay of Monterey, California)? and from D. nigripes (North Pacific Ocean, off Alaska). Lipeurus confidens KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 26, pl. 111, hol: From Diomedea nigripes (North Pacific Ocean, off Alaska). Lipeurus concinnus KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 97, pl. v11, fig. 2. From Diomedea albatrus (Bay of Monterey, California). Lipeurus varius KELLOGG, New Mallophaga, I, 1896, p. 116, pl. vit, figs. 3, 4. From Fulmarus glacialis glupischa and F. g. rodgersiit (Bay of Monterey, California). Lipeurus celer KELLOGG, New Mallophaga, I, 1896, p.117, pl. vm, figs. 5,6. From Fulmarus glacialus glupischa and F. g. rodgersii (Bay of Monterey, California). Lipeurus diversus KELLOGG, New Mallophaga, I, 1896, p. 123, pl. v1m1, figs. 3, 4. KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 95. Recorded by Kellogg from Puffinus gavia (Bay of Monterey, Cali- fornia); by Kellogg and Chapman, from Puffinus gavia, P. griseus, P. creatopus, P. bulleri, P. tenuirostris, and stragglers probably from Diomeive avvatrue (all from Bay of Monterey, California). 60 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Lipeurus testaceus TASCHENBERG, Die Mallophagen, 1882, p. 135, pl. v, fig. 3.—_KELLOGG, New Mallophaga, I, 1896, p. 130, pl. x1, figs. 2, 4.— KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 100. Recorded by Kellogg from Puffinus gavia (Bay of Monterey, Cali- fornia); by Kellogg and Chapman from P. creatopus. Recorded by Taschenberg from Procellaria capensis. Lipeurus limitatus KELLOGG, New Mallophaga, I, 1896, p. 124, pl. v1, figs. 5, 6.—KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 100. Recorded by Kellogg from Puffinus griseus (Bay of Monterey, California); by Kellogg and Chapman from Puffinus gavia, P. griseus, P. bulleri, and P. tenuirostris (Bay of Monterey, California). Lipeurus fuliginosus ASCHENBERG, Die Mallophagen, 1882, p. 156, pl. rv, fig. 3.— KELLOGG and CHAPMAN (var. major, Kellogg and Chap- man), Mallophaga from Birds of California, in New Mallophaga, ITT, 1897, p. 100, pl. v1, fig. 3. Variety major Kellogg and Chapman from Puffinus gavia and P. creatopus (Bay of Monterey, California). The species recorded by Taschenberg from Diomedea exulans and D. chlororhyncha. Lipeurus subangusticeps PIAGHT, Les Pédiculines, 1880, p. 308, pl. xxv, fig. 5.—OSBORN, Insects Affecting Domestic Animals, 1896, p. 235, pl. 11, fig. g. Recorded by Osborn from ‘“ Thalassidroma wilsoni” (Oceanites oceanicus?) (Burnett collection). Recorded by European authors from Thalassidroma leachi and Th. pelagica. Lipeurus pullatus Nirzscu (ed. Giebel), Zeitschr. f. ges. Naturwiss., 1866, XXVIII, p. 387.—OSBORN, Insects Affecting Domestic Animals, 1896, p. 234. a Recorded by Osborn from Sula bassana and Sula alba (Burnett collection). Lipeurus faralloni KELLOGG (Nirmus), New Mallophaga, I, 1896, p. 103, pl. v, fig. 4. KELLOGG and CHAPMAN (Lipeurus), Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 101, pl. VII, fig. 4. Recorded by Kellogg from Phalacrocorax dilophus albociliatus, and a straggler, probably, from Colymbus septentrionalis (Bay of Monterey, California); by Kellogg and Chapman, from Phalacro- corax penicillatus (Bay of Monterey, California). Lipeurus longicornis PrAGET, Les Pédiculines, 1880, p. 334, pl. xxvIt, fig. 3.—OsBORN, Insects Affecting Domestic Animals, 1896, p. 233. Recorded by Osborn from Phalacrocorax dilophus (Ames, Iowa). Recorded by European authors from Phalacrocorax carbo and Ph. cristatus. A straggler, probably, recorded by Denny “v.41 Hema- topus ostralegus. No. 1183, NORTH AMERICAN MALLOPHAGA—KELLOGG. 61 Lipeurus toxoceros NiTzscu (ed. Giebel), Zeitschr. f. ges. Naturwiss., 1866, XXVIII, p. 386.—KELLOGG, New Mallophaga, I, 1896, p. 131, pl. x, figs 3 and 5 Recorded by Kellogg from Phalacrocorax dilophus albociliatus, and a straggler, probably, from Pelecanus californicus; both hosts from Bay of Monterey, California. Lipeurus forficulatus Nirzscu (ed. Giebel), Zeitschr. f. ges. Naturwiss., 1866, XXVIII, p. 386.—KELLOGG, New Mallophaga, I, 1896, p. (29, pl. rx, figs. 3-6.—OsBorn, Insects Affecting Domestic Animals, 1896, p. 233.—KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 30.— KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 102. Recorded by Kellogg from Pelecanus californicus (Bay of Monte- rey, California, and Baja California) and from Pelecanus erythro- rhynchus (Lawrence, Kansas); by Osborn from “pelican” (P. ery- throrhynchus ?) (Ames, Iowa). Recorded by European authors from P. onocrotalus. Lipeurus bifasciatus PIAGET, Les Pédiculines, 1880, p. 342, pl. xxv1it, fig. 1—Osporn, Insects Affecting Domestic Animals, 1896, p. 233. Recorded by Osborn from Pelecanus erythrorhynchus (Davenport, Nebraska). - Recorded by Piaget from P. crispus. . Lipeurus gracilicornis PIAGET, Les Pédiculines, 1880, p. 309, pl. xxv, fig. 6.—KELLOGG (var. major K.), Mallophaga from Birds of Panama, Baja California, and Alaska, in new Mallophaga, IIT, 1899, p 30, pl. 111, fig. 3. Variety major Kellogg from Fregata aquila. The species recorded by Piaget from Fregata minor. Lipeurus temporalis NirtzscH, Germar’s Mag. Ent., 1818, Lil, p. 292.— KELLOGG, New Mallophaga, I, 1896, p. 130, pl. x, fig. 1. Recorded by Kellogg from Merganser serrator (Bay of Monterey, California). ; Recorded by European authors from Mergus merganser and M. serrator. Lipeurus squalidus NirzscH, Germar’s Mag. Ent., 1818, III, p. 292.— OSBORN, Notes on Mallophaga and Pediculide, Canad. Ent., 1884, XVI, p. 198.—OsporRn, The Pediculi and Mallophaga Affecting Man and the Lower Animals, 1891, p. 39, fig. 27.—KELLOGG, New ‘Mallophaga, I, 1896, p. 132, pl. x, figs. 6, 7.—OsBorN, Insects Affecting Domestic Animals, 1896, p. 233.—KELLOGG and CHAP- MAN, Mallophaga from Birds of California, in New Mallophaga, IT, 1899, p. 102. Recorded by Osborn from Anas boschas (locality?), Merganser serrator (Cassino collection), Hniconetta stelleri (Stejneger collec- 62 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. tion); by Kellogg from Anas boschas, Charitonetta albeola, Hrisma- tura rubida (all Lawrence, Kansas); by Kellogg and Chapman from Spatula clypeata (Palo Alto, California). Recorded by European authors from numerous species of Anas, Fuligula, Oidemia, and (varieties) from Cygnus. Lipeurus constrictus KeLLocG, New Mallophaga, I, 1896, p. 125, pl- VALUE TSS. (Os From Oidemia perspicillata (Bay of Monterey, California, and Lawrence, Kansas) and O. deglandi (Bay of Monterey, Calton Lipeurus jejunus NirzscH, Germar’s Mag. Ent., 1818, 120, p. 292,— OsBorN, Insects Affecting Domestic Animals, 1396, p. 234, Recorded by Osborn from Anser albifrons gambeli (Cook collec- tion). Recorded by European authors from several species of Anser. Lipeurus leucopygus NirscH, Burmeister, Handb. d. Ent., 1839, II, p. 434,—Var. fasciata PIAGET, Les Pédiculines, 1880, p. 320.—Var. fasciatus PIAGET, OSBORN, Insects Affecting Monee sails, 1896, p. 234. Variety fasciata PIAGET, recorded by Osborn from Botaurus sp. (Burnett collection). This variety recorded by Piaget from Ardea stellaris. Lipeurus botauri Osborn, Insects Affecting Domestic Animals, 1896, p. 234, From Botaurus lentiginosus (locality ?). Lipeurus luridus Nirzscu, Germar’s Mag. Ent., 1818, III, p. 292.— OsBorRN, Insects Affecting Domestic Animals, 1896, p. 232. Recorded by Osborn from Fulica americana (locality ?). Lipeurus longipilus KELLOGG, New Mallophaga, I, 1896, p. 119, pl. VI, fig. 7 : From Fulica americana (Pacific Grove, California). Lipeurus picturatus KELLOGG, New Mallophaga, I, 1896, p. 121, pl. v1, figs. 1, 2. icin Fulica americana (iawrence, Kansas). Lipeurus infuscatus OSBORN, Insects Affecting Domestic Animals, 1896, p. 234, pl. U, figs. e, f. From Philohela minor and Bartramia longicauda (Burnett collec- tion). Lipeurus dissimilis PrAGET, Les Pédiculines, 1880, p. 359, pl. Xx1Xx,.fig. 1.—KELLOGG, New Mallophaga, II, 1896, p. 507, pl. Lxv11t, fig. 7. Recorded by Kellogg from Colinus virginianus (Lawrence, Kan- Sas). Recorded by Piaget from same host (Zoological Garden of Rot- terdam). No. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 63 Lipeurus docophoroides PrAGHT, Les Pédiculines, 1880, p. 357, pl. xxvii, fig. 9—_KELLOGG, New Mallophaga, I, 1896, p. 508, pl. Lx v1, fig. 8.—Var. californicus KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, IIT, 1899, p. 103. Recorded by Kellogg from Callipepla californica (Mountain View, California). Recorded by Piaget from same host species (Zoological Garden of Rotterdam). Variety californicus Kellogg and Chapman from Oreortyx pictus plumifrons (Ki Dorado County, California). Lipeuras perplexus KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, IIT, 1899, p. 103, pl. vu, fig. 5. From Dendragapus obscurus fuliginosus (Kings River Canyon, California) and Pediocetes phasianellus colwnbianus (Pullman, Washington). Lipeurus protervus KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 31, pl. 111, fig. 4. From Lagopus lagopus (Kadiak Island, Alaska). Lipeurus polytrapezius Nirzscu, Germar’s Mag. Ent., 1818, III, p. 293.— OSBORN, Insects Affecting Domestic Animals, 1896, p. 234. Recorded by Osborn from Meleagris gallopavo. Recorded by European authors from the same host. Lipeurus introductus KELLOGG, New Mallophaga, II, 1896, p. 500, pl. LXVIHII, figs. 1, 5. From Phasianus nycthemerus (bird store, San Francisco, Cali- fornia). Lipeurus variabilis Nirzscu, Osborn, Insects Affecting Domestic Ani- mals, 1896, p. 254. “A common species on domestic fowls” (Osborn). Lipeurus heterographus Nirzscu, Osborn, Insects Affecting Domestic Animals, 1896, p. 251. Goniocotes burnettti PACKARD, Amer. Nat., 1870, IV, p. 94, fig. 116. Recorded by Packard from ‘‘common barnyard fowl;” by Osborn from “domestic fowl” (Burnett collection, and Ames, Iowa); also from ‘“‘young duck” (Lincoln, Nebraska (?) ). Lipeurus baculus NirzscH, Germar’s Mag. Ent., 1818, Ill, p. 293.— OSBORN, Notes on Mallophaga and Pendiculide, Canad. Ent., 1884, XVI, p. 198.—KELLOGG, New Mallophaga, II, 1896, p. 506, pl. LXVIII, figs. 4, 6—OsBorn, Insects Affecting Domestic Animals, 1896, p. 232. Recorded by Osborn from domestic pigeons (several collections) ; by Kellogg from same host (Columba livia), (Lawrence, Kansas). [Lipeurus pustulatus? OsBorN, Insects Affecting Domestic Animals, 1896, p. 234, From Halictus leucocephalus (Burnett collection). I can find no 64 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL. description of this species and no other reference to it. Osborn’s brief reference does not give the name of the describer, nor any reference to any previous record of the species; on the other hand, he does not give a description of the form. Can it be that Osborn has meant to refer to quadri-pustulatus Nitzsch recorded by Euro- pean authors from Aquila chrysetos and A. albicilla ?| Lipeurus macgregori KELLOGG, Mallophaga from Birds of Panama, Baja California, and fot, in New Mallophaga, III, 1899, p. 33, pl. 111, figs. 5, 6. From Cr Boniage sulcirostris (Panama). Lipeurus macrocephalus KELLOGG, New Mallophaga, IT, 1896, p. 504, pl. LXVIII, fig. 3. From Chordeiles virginianus henryt (Palo Alto, California). Lipeurus suodetaee) KELLOGG, New Mallophaga, II, 1896, p. 502, pl. LXVIII, fig. 2. From Trochilus rufus (Palo Alto, California). Lipeurus corvi PACKARD, Amer. Nat., 1870, IV, p. 99, pl. 1, fig. 2 From the crow (Corvus americanus ?) (locality ?). Lipeurus gracilis PACKARD, Amer. Nat., 1870, IV, p. 95, pl. 1, fig. 6. No host; no locality. Lipeurus elongatus PACKARD, Amer. Nat., 1870, IV, p. 95, pl. 1, figs. 4, 4a. No host; no locality. Genus GIEBELIA Kellogg. Giebelia KELLOGG, New Mallophaga, I, 1896, p. 137. Giebelia mirabilis KELLOGG, New Mallophaga, I, 1896, p. 138, pl. x1, figs. 7, 8.—-KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 105. Recorded by Kellogg from Puffinus gavia (Bay of Monterey); by Kellogg and Chapman from Puffinus griseus, P, creatopus, P. tenui- rostris, P. bulleri, and probably a straggler, from Diomedea albatrus (all from Bay of Monterey, California). Genus EURYMETOPUS Taschenberg. Hurymetonus TASCHENBERG, Die Mallophagen, 1882, p. 182. Eurymetopus brevis DUFOUR, Ann. Soc. Ent. France, 1835, IV, p. 674, pl. XXXI, fig. 3.—OSBORN, Insects Affecting Domestic Animals, 1896, p. 233. - Lipeurus taurus Nrvzscu, OSBORN, Proe. U.S. Nat. Mus., 1889, p. 188. Hurymetopus taurus NiTzscH, KELLOGG, New Mallophaga, I, 1896, p-. 135, pl. x1, figs. 3-6.—KELLOGG, Mallophaga frem Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 39..-KELLOGG and CHAPMAN, Mallophaga from Birds of Cali- fornia, in New Mallophaga, ITI, 1899, p. 109. Recorded by Osborn from Diomedea exulans (Albatross expedi- No. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 65 tion) ; by Kellogg from Diomedea albatrus (Bay of Monterey, Cali- fornia), Diomedea nigripes (North Pacifie Ocean; off Alaska), and, as a straggler, probably, from Fulmarus glacialis glupischa and F. g. rodgersvi (Bay of Monterey, California); recorded by Kellogg and Chapman, as a straggler, probably, from Puffinus gavia (Bay of Monterey, California). Recorded by European authors from Diomedea exulans, D.nigripes, and D. brachyura. Genus ORNITHOBIUS Denny. Ornithobius DENNY, Monograph. Anoplur. Brit., 1842, p. 183. Ornithobius goniopleurus DENNY, Monograph. Auoplur. Brit., 1842, p. 184, pl. xx1, fig. 2.—OsBorn. Insects Affecting Domestic Animals, 1896, p. 236. Recorded by Osborn from branta canadensis (Burnett collection). Recorded by Denny from Cygnus canadensis and from Mergus merganser (Great Britain). Ornithobius cygni LINN ZUS (Pediculus), Syst. Nat., 1759, II, p. 1018.— OsBorRN, The Pediculi and Mallophaga Affecting Man and the Lower Animals, 1891, p. 42, fig. 30; Insects Affecting Domestic Animals, 1896, p. 236. Ornithobius bucephalus GIEBEL, OSBORN, Notes on Mallophaga and Pediculidee, Canad. Ent., 1884, X VI, p. 198. Recorded by Osborn from Olor buccinator (Ames, Iowa). Recorded by European authors from Cygnus musicus and C. olor. Genus ONCOPHORUS Rudow. Oncophorus RuDow, Zeitschr. f. ges. Naturwiss., 1870, XXXV, p. 175. Oncophorus bisetosus PIAGET, Les Pédiculines, 1880, p. 217, pl. xv111, fig. 4.—Var. californicus KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 106, pl. vu, fig. 6. Variety caltifornicus Kellogg and Chapman, from Rallus obsoletus and fk. virginianus (Palo Alto, California). Variety porzane Piaget, from Porzana noveboracensis (specimen from North America in Museum of Leyden). The species is recorded by Piaget from Rallina plumbeiventris, R. tricolor, and R. isabellina. Oncophorus minutus Nirzscu, Germar’s Mag. d. Ent., 1818, III, p. 291 (Philopterus).—OsBorRN, Notes on Mallophaga and Pediculide, Canad. Ent., 1884, X VI, p. 198; Insects Atfecting Domestic Ani- mals, 1896, p. 230. Recorded by Osborn from Fulica americana (Ames, lowa). Recorded by European authors from Fulica atra, Gallinula chloropus, G. orientalis, and G. hematopus. Proc. N. M. vol. xxii 5 66 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Oncophorus advena KELLOGG, New Mallophaga, I, 1896, p. 133, pl. x1, figs. 1, 2. From Fulica americana, and Urinator pacificus (Bay of Monterey, California). Oncophorus remotus KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 107, pl. V1, fig. 7. From Scotiaptex cinerea (Pullman, Washington). Genus GONIOCOTES Burmeister. Goniocotes BURMEISTER, Handb. d. Entomologie, 1839, II, p. 431. Goniocotes creber KELLOGG, New Mallophaga, II, 1896, p. 510, pl. LXIx, fig. 3. From Phasianus nycthemerus (bird store, San Francisco, Cali- fornia). Goniocotes compar NITZSCH, Germar’s Mag. d. Ent., 1818, III, p. 294.— KELLOGG, New Mallophaga, II, 1896, p. 512, pl. Lx1x, fig. 4.— OsBoRN, Insects Affecting Domestic Animals, 1896, p. 230. Recorded by Kellogg from Columba livia (Lawrence, Kansas); by Osborn from same host (Burnett collection). Genus GONIODES Nitzsch. Goniodes NiTzscH, Germar’s Mag. d. Ent., 1818, III, p. 293. Goniodes ortygis PIAGET, Les Pédiculines, 1880, p. 282, pl. xxtI, fig. 6. From Ortyx virginianus (specimens from North Americ¢a, in the Zoological Garden of Rotterdam). Goniodes dispar Nirzscu, Germar’s Mag. d. Ent., 1818, III, p. 294.— OSBORN, Insects Affecting Domestic Animals, 1896, p. 230. Recorded by Osborn from quail (Ortyx virginianus ?) (Cassino collection). Recorded by European authors from Perdix cinerea. Goniodes mammillatus Rubow, Zeitschr. f. ges. Naturwiss., 1870, XX XV, p. 483.— KELLOGG, New Mallophaga, II, 1896, p. 509, pl. Lxtx, fig. 2; Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 35.—KELLoGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 109. Recorded by Kellogg from Callipepla californica (Mountain View, California), and from Lagopus lagopus (Kadiak Island, Alaska) by Kellogg and Chapman from Pediocetes phasianellus columbianus (Pullman, Washington). Described by Rudow from Pelecanus ruficollis (must have been an instance of straggling) and recorded by Taschenberg from Callipepla californica. Goniodes cupido GIEBEL, Zeitschr. f. ges. Naturwiss., 1866, XX VIII, p. 387.—OsBoRN, Insects Affecting Domestic Animals, 1896, p.231. Recorded by Osborn from Tympanuchus americanus (C. B. Cook collection). Recorded by European authors from Tetrao cupido. NO. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 67 Goniodes merriamanus PACKARD, Rept. U. 8S. Geol. and Geog. Survey, 1872, p. 731. From Tetrao richardson (no locality). Goniodes stylifer Nitzscu, Germar’s Mag. d. Ent., 1818, III, p. 294.— OSBORN, Insects Affecting Domestic Animals, 1896, p. 231. Recorded by Osborn from Meleagris gallopavo (Hassall, Balti- more, Maryland). Recorded by European authors from same host. Goniodes cervinicornis GIEBEL, Insecta Epizoa, 1874, p. 199.— KELLOGG, New Mallophaga, II, 1896, p. 509, pl. LXIXx, fig. 1. Recorded by Kellogg from Phasianus nycthemerus (bird store, San Francisco, California). Recorded by European authors from same host and Tragopan satyrus. : Goniodes damicornis NiTzscH (ed. Giebel), Zeitschr. f. ges. Naturwiss., 1866, XX VII, p. 119.—OsBorn, Insects Affecting Domestic Ani- mals, 1896, p. 231. Recorded by Osborn from the “ pigeon” (Columba livia) (Cassino collection). Recorded by European authors from Columba palumbus. Goniodes falcicornis N11zScH, Germar’s Mag. d. Ent., 1818, III, p. 293.— OSBORN, Insects Affecting Domestic Animals, 1896, p. 231. Recorded by Osborn as ‘‘ common on the pea-fowl.” Recorded by European authors from Pavo cristatus. 3 |Goniodes mephitidis PACKARD, Kept. U.S. Geol. and Geog. Survey, 1872, p. 732. Taken from a skunk, Mephitis, but probably a straggler from some gallinaceous bird which was the prey of the animal. | Family TRICHODECTID 4% Burmeister. Genus TRICHODECTES Nitzseh. Trichodectes Nivzscu, Germar’s Mag. d. Ent., 1818, III, p. 294. Trichodectes scalaris Nrtzscu, Germar’s Mag. d. Ent., 1818, III, p. 296.— OSBORN, The Pediculi and Mallophaga Affecting Man and the Lower Animals, Bull. 7, Div. of Ent., U. 8. Dept. Ag., 1891, p. 47, fig. 36; Insects Affecting Domestic Animals, 1896, p. 238. From domestic cattle. : Trichodectes parumpilosus PIAGET, Les Pédiculines, 1880, p. 397, pl. XXx11, fig. 5.—OSBORN, The Pediculi and Mallophaga, 1891, p. 46, fig. 35; Insects Affecting Domestic Animals, 1896, p. 258. From the horse (Ames, Iowa). Trichodectes climax Nitzscu, Germar’s Mag. d. Ent., 1818, III, p. 296.— OSBORN, Insects Affecting Domestic Animals, 1896, p. 237. From the domestic goat (Hassall collection, Baltimore). 68 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Trichodectes spherocephalus Nirzscu, Germar’s Mag. d. Ent., 1818, ITI, © p. 296.—OsBorv, Insects Affecting Domestic Animals, 1896, p. 237. From domestic sheep (Canada and Iowa). Trichodectes limbatus GERVAIS, Apteres, IIT, 1844, p. 313, pl. vu, fig. 1.— OsBorN, Insects Affecting Domestic Animals, 1896, p. 237. From domestic goat (Hassall collection, Baltimore). Trichodectes subrostratus NirzScH, Germar’s Mag. d. Ent., 1818, III, p. 296.—OsBorn, The Pediculi and Mallophaga, 1891, p. 42, fig. 31; Insects Affecting Domestic Animals, 1896, p. 237. From domestic cat (‘‘ Fitch and other American collections”). Trichodectes retusus NITZSCH, Germar’s Mag. d. Ent., 1818, III, p. 296.— OsBorNn, Notes on Mallophaga and Pediculide, Canad. Ent., 1884, XVI, p. 98; Insects Affecting Domestic Animals, 1896, p. 237. From Putorius ermineus (locality?) and the weasel (Ames, Iowa.) Trichodectes setosus GIEBEL, Zeitschr. f. ges. Naturwiss., 1861, X VII, p. 86.—OsBoRN, Insects Affecting Domestic Animals, 1896, p. 239, fig. 145. From the porcupine Hrethizon dorsatum (Nebraska). Trichodectes crassus NrrzscH, Germar’s Mag. d. Hnt., 1318, III, p. 295.— OsBorRN, Insects Affecting Domestic Animals, 1896, p. 237. From Procyon lotor (Burnett collection). Trichodectes geomydis OSBORN, The Pediculi and Mallophaga, 1891, p. 54, fig. 42; Insects Affecting Domestic Animals, 1896, p. 239, fig. 146. From Geomys bursarius (Ames, Iowa) and Thomomys botte (Cali- fornia). Trichodectes parallelus OSBORN, Insects Affecting Domestic Animals, 1896, p. 240, fig. 148. From the “deer” (species?) (Cornell collection). Trichodectes tibialis OSBORN, Insects Affecting Domestic Animals, 1896, p. 240, fig. 147. From black-tailed deer (Baker collection). Trichodectes castoris OSBORN, Insects Affecting Domestic Animals, 1896, p. 241, fig. 149. From the beaver (locality ?). Trichodectes mephitidis OSBORN, Insects Affecting Domestic Animals, 1896, p. 242, fig. 150. From polecat, Spilogale interrupta (Tama County, lowa), and from Mephitis mephitica (Nebraska and California). Trichodectes quadraticeps CHAPMAN, Entomological News, 1897, VIII, p. 185, pl. 1X. From the fox, Urocyon virginianus (Palo Alto, California). Trichodectes californicus CHAPMAN, Entomological News, 1897, VIII, p. 186, pl. Ix. From the pocket mouse, Peroynathus sp. (Baja California). No. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 69 Suborder AMBLYCERA Kellogg. Family LIOTHEIDA‘ Burmeister. Genus LZ MOBOTHRIUM Nitzsch. Lemobothrium Nirzscu, Germar’s Mag. d. Ent., 1818, III, p. 301. Lemobothrium similis KELLOGG, New Mallophaga I, 1896, p. 153, pl. XIV, figs. 1, 2. From Colymbus nigricollis californicus (Lawrence, Kansas), Lemobothrium atrum NirzscH, Germar’s Mag. d. Ent., 1818, III, p.302.— KELLOGG, New Mallophaga I, 1896, p. 155, pl. XIV, fig. 3—OsBorRN, Insects Affecting Domestic Animals, 1896, p. 247. Recorded by Kellogg from Fulica americana (Bay of Monterey, California); by Osborn from unknown host. Recorded by European authors from Fulica atra and Podiceps rubricollis. Lemobothrium hasticeps NirzscH, Germar’s Mag. d. Ent., 1818, III, p. 302.—OSBORN, Insects Affecting Domestic Animals, 1896, p. 247. Osborn’s specimens (by typographical error referred to as hastipes) were sent him by Dr. C. Hart Merriam; host and locality unin- dicated by Osborn. Recorded by European authors from Falco tinnunculus. Lemobothrium giganteum NirzscH, Germar’s Mag. d. Ent., 1818, III, p. 301.—OsBoRN, Insects Affecting Domestic Animals, 1896, p. 247. Recorded by Osborn from Thrysetos harpyia (Beutenmiiller). Recorded by European authors from Buteo vulgaris. Genus PHYSOSTOMUM Nitzseh. Physostomum NiTzscu, Germar’s Mag. d. Ent., 1818, III, p. 302. Physostomum invadens KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga III, 1899, p. 50. From Melanerpes wagleri and Chiroxiphia lanceolata (Panama). Physostomum lineatum OsBorn, Insects Affecting Domestic Animals, 1896, p. 248. From Trochilus colubris (Cornell University collection). Physostomum prominens KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 137, pl. 1x, fig. 5. From Colypte coste (Ontario, California). Physostomum angulatum KELLOGG, New Mallophaga, II, 1896, p. 515, pl. LxXx, fig. 5. From Tyrannus tyrannus (Lawreuce, Kansas). Physostomum sucinaceum KELLOGG, New Mallophaga II, 1896, p. 514, pl. Lxx, fig. 2.— KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 137. From Hmpidonax difficilis (Palo Alto, California). TO _ PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXL Physostomum diffusum KELLOGG, New Mallophaga, II, 1896, p. 518, pl. LXX, fig. 3; var. pallidum KELLOGG, Idem, p. 519.— KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallo- phaga ITI, 1899, p. 137. Recorded by Kellogg from Zonotrichia coronata and Passerculus sandvicensis (Paio Alto, California); by Kellogg and Chapman from Junco hyemalis oregonus (Pullman, Washington). Variety pallidum Kellogg, from Junco sp. (Lawrence, Kansas). Physostomum microcephalum KELLOGG, New Mallophaga, IT, 1896, p. 518, le Teprexg, rier, IE, From Carpodacus mexicanus frontalis (Palo Alto, California). Physostomum australe KELLOGG, New Mallophaga, II, 1896, p. 516, pl. LXX, fig. 4. From Passerina versicolor (Cameron County, Texas). Physostomum pallens KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 49, [OM IA, 1iker: Ci From Protonotaria citrea and Hlainea subpagana (Panama). Physostomum frenatum NiTzscH, Burmeister, Handb. d. Ent., 1839, I, p. 442.—OsBorN, Insects Affecting Domestic Animals, 1896, p. 248. Recorded by Osborn from “golden-crowned Kinglet” (Regulus satrapa) (Laurent collection). ‘ Very similar forms from Passerella iliaca (Cassino collection), and Pipilo erythrophthalmus, from Dr. Merriam” (Osborn). Recorded by Nitzsch from Regulus verus. Genus TRINOTON Nitzseh. Trinoton NitzscH, Germar’s Mag. d. Ent., 1818, III, p. 300. Trinoton luridum NitrzscuH, Germar’s Mag. d. Ent., 1818, III, p. 300.— OsBORN, Notes on Mallophaga and Pediculide, Canad. Ent., 1884, XVI, p. 199.—KELLOGG, New Mallophaga, I, 1896, p. 152, pl. x11, fig. 4.—OsBORN, Insects Affecting Domestic Animals, 1896, p. 248.—KELLOGG, Mallophaga from Birds of Panama, Baja Cali- fornia, and Alaska, in New Mallophaga, ITT, 1899, p.35.—KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mal- lophaga, III, 1899, p. 116. Recorded by Osborn from Anas boschas; “have met with it a number of times myself, and have noted it in collections of the U. S. National Museum, the Cassino collection, from Mergus ser- rator, Bruner collection, Kellogg collection, ete.” (Osborn). recorded by Kellogg from Spatula clypeata, Merganser serrator, Anas carolinensis, Dafila acuta, Anas boscas, and Anas americana (Lawrence, Kansas); from Hrismatura rubida (Monterey, Califor- nia), and from Anas carolinensis (Kadiak Island, Alaska). Recorded by Kellogg and Chapman from Anas americana and Aythya marila nearctica (Palo Alto, California), and from Spatula clypeata (Mountain View, California). NO. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. (Al — Recorded by European authors from numerous species of Anas and from other ducks; and also from Branta rufina and Egretta alba. Trinoton lituratum Nirzscu, Germar’s Mag. d. Ent., 1818, III, p. 300.— KELLOGG, New Mallophaga, I, 1896, p. 151, pl. xi, fig. 3—_OsBorn, Insects Affecting Domestic Animais, 1896, p. 248.—KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Malloph- aga, III, 1899, p. 116. Recorded by Kellogg from Dafila acuta and Merganser serrator (Lawrence, Kansas); by Osborn from ‘“blue-winged teal” (Cassino collection); by Kellogg and Chapman from Spatula clypeata (Moun- tain View, California). Recorded by European authors from Mergus albellus, Anas clyp- eata, Dendrocygna arborea, and Anser albifrons. Trinoton minor OSBORN, Insects Affecting Domestic Animals, 1896, p. 248. From Oidemia sp. (Burnett collection). Genus ANCISTRONA Westwood. Ancistrona WESTWOOD, Thesaurus Entomologicus Oxoniensis, 1874, p. 197. Ancistrona gigas PIAGET, Les Pédiculines, Supplement, 1885, p. 117, pl. XI, fig. 8_KELLOGG, New Mallophaga, I, 1896, p. 150, pl. x11, figs. 1, 2.— KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 116. Recorded by Kellogg from Fulmarus glacialis glupischa and F’. q. rodgersii, and by Kellogg and Chapman from Puffinus gavia, and P. griseus (all hosts from Bay of Monterey, California). Recorded by Piaget from Procellaria glacialis. Genus NITZSCHIA Denny. Nitzschia DENNY, Monograph. Anoplur. Brit., 1842, p. 230. Nitzschia pulicaris Nitzscu, Zeitschr. f. ges. Naturwiss., 1861, X VITI, p. 304.—OSBORN, Notes on Mallophaga and Pediculid, Canad. Ent., 1884, XVI, p. 199; Insects Affecting Domestic Animals, 1896, p. 247, Recorded by Osborn from Cheetura pelasgica (Ames, Lowa). Recorded by European authors from Cypselus apus. Nitzschia dubius KELLOGG, New Mallophaga, II, 1896, p. 540, pl. Lx x11, fig. 6. From OChetura pelasgica (Lawrence, Kansas). Genus COLPOCEPHALUM Nitzsch. Colpocephalum Nitzscu, Germar’s Mag. d. Ent., 1818, III, p. 298. Colpocephalum perplanus KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, ILI, 1899, p. 109, pl. v1I, fig. 8. From Lunda cirrhata (Bay of Monterey, California). 72 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. Colpocephalum funebre KELLOGG, New Mallophaga, I, 1896, p. 147, pl. xu, fig. 7— KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1897, p. 111. Recorded by Kellogg from Larus glaucescens (Bay of Monterey, California); by Kellogg and Chapman from ZL. heermanni (Bay of Monterey, California). Colpocephalum lari PACKARD, American Naturalist, 1870, IV, p. 96, pl. le talfe, I From Larus marinus (locality ?). Colpocephalum abbotti KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, IIT, 1899, p. 36, pl. Iv, fig. 9. From Larus sp. (Baja California). Colpocephalum fuscipes PIAGET, Les Pédiculines, 1880, p. 567, pl. XLYVII, fig. 7.—OsBORN, Insects Affecting Domestic Animals, 1896, p. 246. Recorded by Osborn from Larus sp. (Cassino collection). Recorded by Piaget from Larus dominicanus. Colpocephalum pingue KELLOGG, New Mallophaga, I, 1896, p. 144, pl. XH, fig. 5 KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 111. From Diomedea albatrus (Bay of Monterey, California). Colpocephalum unciferum KELLOGG, New Mallophaga, I, 1896, p. 140, pl. xu, figs. 1-3. From Pelecanus erythrorhynchus (Lawrence, Kansas) and P. cali- Jornicus (Bay of Monterey, California). Colpocephalum spineum KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 38, leas, filer ol From Fregata aquila (Panama). Colpocephalum laticeps KELLOGG, New Mallophaga, 1, 1896, p. 149, pl. XII, fig. 8. From Ardea egretta (Lawrence, Kansas). Colpocephalum assimile PIAGET’, Les Pédiculines, 1880, p. 544.—OsBoRN, Insects Affecting Domestic Animals, 1896, p. 246. Recorded by Osborn from Ames, Iowa (Osborn collection), host not specifically given, but by implication Grus americana; also from “whooping crane” (Grus americana) (Lamar, Colorado). Recorded by Piaget from Grus americana (Zoological Garden of Lotterdam). Colpocephalum uniforme KELLOGG, New Mallophaga, I, 1896, p. 142, pl. xT, fio. 4. From Recurvirostra americana (Lawrence, Kansas). NO. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 13 Colpocephalum ochraceum NITZSCH, Germar’s Mag. d. [nt., 1818, iil, p. 299.—OsBorN, Insects Affecting Domestic Animals, 1896, p. 246. Recorded by Osborn from Tringa maculata (Burnett collection). Recorded by European authors from Vanellus cristatus, V. varius, Himantopus rufipes, Charadrius morinellus, Tringa variabilis, Li- mosa rufa, Macrorhamphus griseus, Charadrius hiaticula, Totanus hypoleucus, Heematopus ostralegus, and Sterna minuta. Colpocephalum spinulosum PIAGET, Les Pédiculines, 1880, p. 563, pl. XLVU, fig. 3; var. minor KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, ITI, 1899, p. 112, pl. vil, fig. 9. Variety minor Kellogg and Chapman, from Calidris arenaria (Pacific Grove, California). The species recorded by Piaget from Limosa melanura. Colpocephalum timidum KELLOGG, New Mallophaga, I, 1896, p. 145, pl. XI, fig. 6 KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 112. Recorded by Kellogg from Charadrius dominicus (Lawrence, Kansas); by Kellogg and Chapman from C. squatarola (Pacifie Grove, California). Colpocephalum longicaudum PIAGET, Les Pédiculines, 1880, p. 534, pl. XLIV, fig. 6.—OsBoRN, Insects Affecting Domestic Animals, 1896, p. 246. Recorded by Osborn from ‘carrier pigeon” (Bur nett collection). ‘“ Also @ Specimen very similar on Gallus gallus (Burnett collec- tion)” (Osborn). Recorded by Piaget from Columba domestica and ‘*probablement comme deserteur” from Phasianus reevesii. Colpocephalum flavescens NiTzscu, Germar’s Mag. d. Ent., 1818, ILI, p. 298.—OsBORN, Notes on Mallophaga and Pediculid, Canad. Ent., 1884, X VI, p. 198.—KELLOGG, New Mallophaga, II, 1896, p. 525, pl. LXXI, fig. 4.OsBorvy, Insects Affecting Domestic Animals, 1896, p. 246.—KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 113. Recorded by Osborn from Hlanoides forficatus (Ames, lowa); by Kellogg from Archibuteo lagopus sancti-johannis and Halietus leu- cocephalus (Lawrence, Kansas); by Kellogg and Chapman from Aquila chrysetos (Palo Alto, California), and Haliwtus pelagicus (brought to California from Arctic Ocean). Recorded by European authors from Halictus albicilla, H. leuco- gaster, Aquila nevia Gypetos barbatus, Harpyia destructor, Mil- vus regalis, Astur palumbarius, Falco peregrinus, Pernis apivorus, Buteo vulgaris, Circus cinereus, and Nyctea nivea. Colpocephalum osborni KELLOGG, New Mallophaga, II, 1896, p. 521, io LXXI, figs. 2 and 3. Reon Elanus leucurus (Palo Alto, California). 74 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII Colpocephalum maculatum PIAGET, Les Pédiculines, 1880, p. 516, pl. XLT, fig. 1—KELLOGG, Mallophaga from Birds of Panama, Baja Cal- ifornia, and Alaska, in New Mallophaga, 11, 1899, p. 40, pl. Iv, fig. 2. Recorded by Kellogg from Polyborus cheriway (Baja California). Recorded by Piaget from Polyborus brasiliensis (Zoological Gar- den of Rotterdam). Colpocephalum subpachygaster PIAGET, Les Pédiculines, 1880, p. 517, pl. XLII, fig. 2.—OsBorN, Insects Affecting Domestic Animals, 1896, p. 246. Recorded by Osborn from Bubo virginianus (Burnett collection). Recorded by Piaget from Strix noctua, S. flammea, and 8. passerind. Colpocephalum pustolusum PIAGET, Les Pédiculines, 1880, p. 559, pl. XLVI, fig. 8.— OsBorN, Insects Affecting Domestic Animals, 1896, p. 246. Recorded by Osborn from Ceryle aleyon (Burnett collection). Recorded by Piaget from Machetes pugnax. Colpocephalum subeequale NITZScH, Germar’s Mag. d. Hnt., 1818, II, p. 299, KELLOGG, New Mallophaga, II, 1896, p. 525, pl. Lx xi, fig. 1; Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, ILI, 1899, p. 40. Recorded by Kellogg from Corvus americanus (Palo Alto, Cal- ifornia) and Corvus corax sinuatus (Baja California). Recorded by European authors from Corvus corax, C. frugilegus, and C. corone. Colpocephalum chrysopheum KELLOGG, New Mallophaga, II, 1896, p. 520, pl. LXX1, fig. 1. From Melospiza fasciata samuelis (Palo Alto, California). Colpocephalum grandiculum KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 113, pl. vi, fig. 10. From Pipilo fuscus crissalis (Palo Alto, California). Colpocephalum diffusum KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 40, pl. IV, figs. 3, 4. Recorded by Kellogg from Amblycercus holosericeus, Arremonops striaticeps, Sultator albicollis, Phenicothraupis fuscicauda, Hlainea subpagana, Dendroica vieilloti, Piaya cayana thermophila, Chiroxt- phia lanceolata, and Butorides virescens. Colpocephalum fumidum KELLOGG, New Mallophaga, IT, 1896, p. 523, pl. LXXI, fig. 5. From Psaltriparus minimus (Palo Alto, California). NO. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 15 Genus MENOPON Nitzseh. Menepon Nitzscu, Germar’s Mag. d. Ent., 1818, III, p. 299. Menopon tridens Nirzscu, Burmeister, Handb. d. Ent., 1839, I, p. 440.— KELLOGG, New Mallophaga, I, 1896 (varieties pacificum Kellogg, insolens Kellogg, and par Kellogg), p. 165, pl. xv, figs. 3, 4.— OSBORN, Insects Affecting Domestic Animals, 1896, p. 244.—KEL- LOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 116. Recorded by Kellogg, variety pacificum Kellogg, from Urinator pacificus and Fulica americana (Monterey, California); variety inso- lens Kellogg from Colymbus nigricollis californicus (Bay of Monte- rey, California); and Sterna forstert (Lawrence, Kansas), variety par Kellogg, from Achmophorus occidentalis (Lawrence, Kansas). Recorded by Osborn from Fulica americana (Ames, Iowa). Recorded by Kellogg and Chapman from Rallus obsoletus and R. virgimianus (Palo Alto, California). Menopon infrequens KELLOGG, New Mallophaga, I, 1896, p. 161, pl. xv, fig. 5. KELLOGG and CHAPMAN, Mallophaga from Birds of Cali- fornia, in New Mallophaga, III, 1899, p. 117. Recorded by Kellogg from Larus glaucescens (Bay of Monterey, California), by Kellogg and Chapman from L. delawarensis (same locality). Menopon navigans KELLOGG, New Mallophaga, I, 1896, p. 156, pl. x1v, figs. 4, 5. From Diomedea albatrus (Bay of Monterey, California). Menopon irrumpens KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 117, pl. vin, fig. 1. From Diomedea albatrus (Bay of Monterey, California). Menopon numerosum KELLOGG, New Mallophaga, I, 1896, p. 159, pl. xv, fioael: From Fulmarus glacialis glupischa and F. g. rodgersii (Bay of Monterey, California). Mencpon paululum KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, ITI, 1899, p. 119, pl. v111, fig. 2. From Puffinus gavia, P. griseus, and P. creatopus (Bay of Monte- rey, California). Menopon petulans KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 121, pl. v111, fig. 3. From Puffinus gavia and P. griseus (Bay of Monterey, California). Menopon titan PrAGHT, Les Pédiculines, 1880, p. 503, pl. XL, fig. 7.— KELLOGG, New Mallophaga, I, 1896 (varieties impar Kellogg and linearis Kellogg) p. 163, pl. xv, fig. 2,— KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899 (variety linearis Kellogg) p. 43.—KELLOGG and CHAP- 76 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XX. MAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899 (varieties linearis Kellogg and incompositum Kellogg and Chapman), p. 123. Recorded by Kellogg, variety impar Kellogg from Pelecanus erythrorhynchus (Lawrence, Kansas); variety linearis Kellogg from Pelecanus californicus (Bay of Monterey, California, and Baja Cal- ifornia); by Kellogg and Chapman, variety incompositum Kellogg and Chapman from Phalacrocorax penicillatus (Bay of Monterey, California). Menopon consanguineum PIAGET, Les Pédiculines, Supplement, 1885, p. 116, pl. x11, fig. 7— RILEY and HowARbD, Insect Life, 1893, V, p. 284.—OsBoRN, Insects Affecting Domestic Animals, 1896, p. 243. Recorded by Riley and Howard from “ white pelican” (River- dale, California); by Osborn from “ pelican” (Pelecanus erythro- rhynchus) (Ames, Iowa), and on “‘ specimens examined in collections of United States National Museum, Kansas University, Boston Society of Natural History, etc.” Menopon aurifasciatum KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 43, pl. Iv, fig. 5. From Fregata aquila (Panama). Menopon loomisii KELLOGG, New Mallophaga, I, 1896, p. 162, pl. xv, fig. 6. From Oidemia deglandi (Bay of Monterey, California). Menopon indistinctum KELLOGG, New Mallophaga, I, 1896, p. 157, pl. xv, figs. 6, 7. From Recurvirostra americana (Lawrence, Kansas). Menopon crocatum NiITzscu, ed. Giebel, Zeitschr. f. ges. Naturwiss., 1866, XXVIII, p. 392.—OsBorN, Insects Affecting Domestic Animals, 1896, p. 244. Recorded by Osborn from Philohela minor and Limosa hemastica (Burnett collection). Recorded by Nitzsch from Numenius arquata. Menopon pallescens Nrtzscu, ed. Giebel, Zeitschr.f. ges. Naturwiss., 1866, XXVIII, p. 391.—OsBorn, Insects Affecting Domestic Animals, 1896, p. 243. Recorded by Osborn from Colinus virginianus (Burnett collec- tion). Recorded by European authors from Perdix cinerea. Menopon striatum KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, ILI, 1899, p. 44, pl. Iv, fig. 6. From Lagopus lagopus (Kadiak Island, Alaska). NO. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. all Menopon monostechum KELLOGG, New Mallophaga, II, 1896, p. 530, pl. LXXII, fig. 4. From Phasianus nycthemerus (bird store, San Francisco, Cali- fornia). Menopon pallidum NitTzscH, Germar’s Mag. d. Ent., 1818, III, p. 299.— OsBORN, Notes on Mallophaga and Pediculide, Canad. Ent., 1884, XVI, p. 198; Insects Affecting Domestic Animals, 1896, p. 243. Recorded by Osborn from the domestic fowl. Recorded by European authors from the domestic fowl, pigeons, and ducks. Menopon biseriatim PIAGET, Les Pédiculines, 1880, p. 469, pl. Xxxvit, fig. 2,—_OsBoRN, Insects Affecting Domestic Animals, 1896, p. 243. Recorded by Osborn from domestic fowl (Baltimore; Cornell Uni- versity collection). Recorded by Piaget from domestic fowl, Huplocamus cuvieri, Phasianus colchicus, Pavo speciferus, aud Meleagris gallopavo. Menopon longicephalum KELLOGG, New Mallophaga, II, 1896, p. 535, pl. LXx1Ii, fig. 4. From the pigeon, Columba livia (Lawrence, Kansas). Menopon decoratum KELLOGG, New Mallophaga, II, 1896, p.526, pl. Lx x11, fig. 2. From Hlanus leucurus (Palo Alto, California). Menopon fulvo-fasciatum PIAGET, Les Pédiculines, 1880, p. 417, pl. xxxtiI, fig. 3—OsBorv, Insects Affecting Domestic Animals, 1896, p. 244. Recorded by Osborn from Milvus sp. incog. {Burnett collection). Recorded by Piaget from Buteo vulgaris, and a variety, minor, from Accipiter nisus. Menopon funereum KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 124, pl. v111, fig. 6. From Dryobates pubescens gairdnert and Coccothraustes vesper- tinus montanus (California). Menopon precursor KELLOGG, Mallophaga from Birds of Panama, Baja California, and Alaska, in New Mallophaga, III, 1899, p. 46, pl. 1v, fig. 8. From Melanerpes uropygialis (Baja California). Menopon distinctum KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 126, pl. v111, fig. 7. From Myiarchus cinerascens and Heleodytes brunneicapillus (Onta- rio, California). Menopon persignatum KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 128, pl. 1x, fig. 1. From Aphelocoma californica (Mountain View, California). Menopon interruptus OSBORN, Insects Affecting Domestic Animals, 1896, p. 245, pl. H, fig. h. From Corvus americanus (Ames, lowa; also Burnett collection). 78 PROCEEDINGS OF THE NATIONAL MUSEUM.. VOL. XX. Menopon mesoleucum NiTzscu, Germar’s Mag. d. Ent., 1818, ITI, p. 300.—. KELLOGG, var. americanum Kellogg, New Mallophaga, II, 1896, p. 539, pl. LXXIII, fig. 3. Variety americanum Kellogg from Corvus americanus (Lawrence, Kansas, and Palo Alto, California). The species recorded by European authors from Corvus cornia and C. corone. Menopon expansum OSBORN, Insects Affecting Domestic Animals, 1896, p. 245, pl. 01, fig. j. From Dolichonyx oryzivorus (Burnett collection). Menopon crassipes PIAGET, Les Pédiculines, 1880, p. 450, pl. xxxv, fig. 7.—OSBORN, Insects Affecting Domestic Animals, 1896, p. 244. Recorded by Osborn from Jecterus galbula (Burnett collection). Recorded by Piaget from Hpimachus magnificus. Menopon carduelis DENNY, Monograph. Anoplur. Brit., 1842, p. 2 8, pl. Xx, fig. 7.-OSBoRN, Insects Affecting Domestic Animals, 1896, p. 244, Recorded by Osborn from Spinus tristis (Burnett collection). Recorded by Denny from Fringilla cardueiis. Menopon mestum KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, ITI, 1899, p. 130, pl. 1x, fig. 2. From Zonotrichia coronata and Melospiza fasciata samuelis (Palo Alto, California). Menopon melanorum KELLOGG, New Maillophaga, II, 1896, p. 532, pl. LXXti, tig. 1 From Pipilo erythrophthalmus (Lawrence, Kansas). Menopon dissimile KELLOGG, New Mallophaga, II, 1896, p. 536, pl. LXXIUM, fig. 5. From Progne subis (Lawrence, Kansas). Menopon rusticum GIEBEL, Insecta Epizoa, 1874, p. 288._-OsBorN, Insects Affecting Domestic Animals, 1896, p. 243. Recorded by Osborn from Progne subis (Ames, Lowa). Recorded by Giebel from Hirundo rustica. Menopon malleus Nirzscu, Germar’s Mag. d. Hnt., 1818 (Hureum), ITT, p. 301.--KELLOGG and CHAPMAN, Mallophaga from Birds of Califor- nia, in New Mallophaga, III, 1899, p. 133, pl. rx, fig. 3. Recorded by Kellogg and Chapman from Petrochelidon lunifrons (Ontario, California). Recorded by European authors from Hirundo rustica. Menopon ridulosum KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 135, pl. 1x, fig. 4. From Dendroica estiva (Palo Alto, California). NO. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 719 Menopon robustum KELLOGG, New Mallophaga, II, 1896, p. 528, pl. LXXxI, fig. 3. From Psaltriparus minimus (Palo Alto, California). Menopon incertum KELLOGG, New Mallophaga, II, 1896, p. 533, pl. LXXIII, fig. 2—_ KELLOGG and CHAPMAN, Mallophaga from Birds of California, in New Mallophaga, III, 1899, p. 130. Recorded by Kellogg from Turdus ustulatus and Spinus tristis (Palo Alto, California); by Kellogg and Chapman from Chondestes grammacus strigatus (Ontario, California), and Thryothorus bewicki spilurus (Palo Alto, California). Menopon fusco-marginatus OSBORN, Insects Affecting Domestic Animals, 1896, p. 245. From Turdus minor (Burnett collection). Geass GYRO WS INhiwaselag Gyropus NITZscH, Germar’s Mag. d. Ent., 1818, III, p. 302. Gyropus ovalis Nirzscu, Germars Mag. f. Ent., 1818, III, p. 304.— OSBORN, Insects Affecting Domestic Animals, 1896, p. 216, and p. 249, fig. 140. Recorded by Osborn from guinea pig (Cavia sobaya) (Baltimore). Recorded by European authors from same host, which is its only one. Gyropus gracilis NitzscH, Germar’s Mag. d. Ent., 1818, III, p. 304.— OsBorN, Insects Affecting Domestic Animals, 1896, p. 215, and p. 249, fig. 139. Recorded by Osborn from guinea pig (Cavia sobaya) (Baltimore). Reported by European authors from same host, which is its only one. SUMMARY. So far 282 species of Mallophaga have been recorded from North American hosts, of which 264 species are from birds and 18 from mam- mals, These species of Mallophaga represent 18 out of the 21 recog- nized genera. Ail of these genera except one (Giebelia) were estab- lished for specimens taken from European hosts. Of the 264 species of Mallophaga from North American birds, 107 are species originally described from European hosts (in 11 cases the American specimens being called varieties). The remaining 157 species were described from American hosts. ist On Osis: WirMel PAwky ASME is: BIRDS. The sequence and nomenclature of hosts is, where possible, that of the American Ornithologists’ Union Check-list of North American Birds, second edition, 1895; where the hosts have been recorded under names not recognized by the Check-list I have, where the synonymy 80 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. could certainly be made out, used the Check-list name. In cases of doubtful records or references to vernacular names only of host, I have indicated the doubt by a preceding point of interrogation and have given exact reference to the record in following parentheses: ZEchmophorus occidentalis. Menopon tridens Nitzsch, var. par Kellogg. Colymbus nigricollis californicus. Docophorus pertusus Nitzsch. lari Denny. kansensis Kellogg. Nirmus fuscomarginatus Denny, var. americanus Kellogg and Chapman. Laemobothrium similis Kellogg. Menopon tridens Nitzsch, var. insolens Kellogg. Urinator pacificus. Docophorus colymbinus Denny. graviceps Kellogg. Oncophorus advena Kellogg. Menopon tridens Nitzsch, var. pacificum Kellogg. Urinator lumme. Docophorus colymbinus Denny. lari Denny. Tipeurus faralloni Kellogg. (Straggler ?) Lunda cirrhata. Nirmus pacificus Kellogg and Chapman. Colpocephalum perplanum Kellogg and Chapman. Cerorhinca monocerata. Docophorus acutipectus Kellogg. Nirmus maritimus Kellogg and Chapman. Ptychoramphus aleuticus. Docophorus insolitus Kellogg. montereyt Kellogg. Nirmus maritimus Kellogg and Chapman. Simorhynchus cristatellus. Nirmus citrinus Nitzseh. Simorhynchus pygmeus. Nirmus citrinus Nitzseh. Simorhynchus pusillus. Nirmus citrinus Nitzsch. Synthliboramphus antiquus. Docophorus atricolor Kellogg. montereyt Kellogg. Nirmus citrinus Nitzsch. maritemus Kelle vg and Chapman. No. 1183. NORTH AMERICAN MALLOPHAG A—KELLOGG. Sl Brachyramphus marmoratus. Docophorus atricolor Kellogg. montereyt Kellogg. Cepphus columba. Docophorus procax Kellogg. Nirmus fuscomarginatus Denny, var. americanus Kellogg and Chapman. pacificus Kellogg and Chanman Uria troile californica. Docophorus calous Kellogg. Alle alle. Nirmus citrinus Nitzseh. Stercorarius pomarinus. Docophorus melanocephalus Burmeister. Nirmus triangulatus Nitzsch. Lipeurus laculatus Kellogg and Chapman. Rissa tridactyla pollicaris. Docophorus lari Denny. Nirmus lineolatus Nitzsch, var. atrimarginatus Kellogg and Chap- man. Larus glaucus. Docophorus lari Denny. Larus glaucescens. Docophorus lari Denny. Nirmus lineolatus Nitzsch. Colpocephalum funebre Kellogg Menopon infrequens Kellogg. Larus marinus. Colpocephalum lari Packard. uarus occidentalis. Docophorus lari Denny. Nirmus lineolatus Nitzsch. punctatus Nitzsch. Larus argentatus smithsonianus. Docophorus lari Denny. Nirmus fuscomarginatus Denny, var. americanus Kellogg and Chapman. lineolatus Nitzsch. Larus vege. Docophorus lari Denny. Nirmus lineolatus Nitzsch. lineolatus Nitzsch, var. atrimarginatus Kellogg aud Chap- man. Larus californicus. Nirmus lineolatus Nitzsch. Proc. N. M. vol. xxii——6 82 PROCEEDINGS OF THE NATIONAL MUSEUM. VOu. XXII Larus delawarensis. Docophorus lari Denny. Nirmus lineolatus Nitzsch. punctatus Nitzsch. Menopon infrequens Kellogg. Larus brachyrhynchus. Docophorus lari Denny. Nirmus lineolatus Nitzsch. lineolatus Nitzsch, var. atrimarginatus Kellogg and Chap- man. Larus canus. Docophorus lari Denny. Nirmus lineolatus Nitzsch. linecolatus Nitzsch, var. atrimarginatus Kellogg and Chap- man. Larus heermanni. Docophorus lari Denny. Nirmus felix Giebel. lineolatus Nitzsch. Colpocephalum funebre Kellogg. Larus philadelphia. Docophorus lari Denny. Larus sp. Colpocephalum abbotti Kellogg. Larus sp. (Osborn, Ins. Aff. Dom. An., 1896, p. 246.) Colpocephalum fuscipes Piaget. Sterna maxima. Docophorus melanocephalus Burmeister. Nirmus hebes Kellogg. prestans Kellogg. Sterna forsteri. Menopon tridens Nitzsch, var. insolens Kellogg. Diomedea nigripes. Tipeurus confidens Kellogg. densus Kellogg. Hurymetopus brevis Dutour. Diomedea albatrus. Nirmus giganticola Kellogg. Iipeurus concinnus Kellogg aud Chapman. diversus Kellogg (stragglers ?). densus Kellogg. ferox Giebel. Giebelia mirabilis Kellogg. (Straggler?) Hurymetopus brevis Dufour. Colpocephalum pingue Kellogg. Menopon irrumpens Kellogg and Chapman. navigans Kellogg. NO. 1185. NORTH AMERICAN MALLOPHAGA—KELLOGG. 83 Dicmedea exulans. EHurymetopus brevis Dufour. Diomedea brachyura. LTipeurus ferox Giebel. Fulmarus glacialis glupischa. Docophorus occidentalis Kellogg. Nirmus maritimus Kellogg and Chapman. Tipeurus celer Kellogg. varius Kellogg. Hurymetopus brevis Dufour (straggler?). Ancisirona gigas Piaget. Menopon numerosum Kellogg. Fulmarus glacialis rodgersi. Docophorus occidentalis Kellogg. Iipeurus celer Kellogg. varius Kellogg. Hurymetopus brevis Dufour. Ancistrona gigas Piaget. Menopon numerosum Kellogg. Puffinus creatopus. Tipeurus diversus Kellogg. laculatus Kellogg and Chapman. Juliginosus Taschenberg, var. major Kellogg and Chapman. testaceus Taschenberg. Giebelia mirabilis Kellogg. Menopon paululum Kellogg and Chapman. Puffinus gavia. : Docophorus validus Kellogg and Chapman. Tipeurus diversus Kellogg. fuliginosus Taschenberg, var. major Kellogg and Chapman. limitatus Kellogg. testaceus Taschenberg. Giebelia mirabilis Kellogg and Chapman. Kurymetopus brevis Dufour (straggler?). Ancistrona gigas Piaget. Menopon paululum Kellogg and Chapmaia. petulans Kellogg and Chapman. Puffinus griseus. Nirmus pacificus Kellogg and Chapman. giganticola Kellogg. Lipeurus diversus Kellogg. limitatus Kellogg. Giebelia mirabilis Kellogg. Anecistrona gigas Piaget. Menopon paululum Kellogg and Chapman. petulans Kellogg and Chapman. 84 PROCKEDINGS OF THE NATIONAL MUSEUM. VOL. XXIi. Puffinus teauiorosiris. Lipeurus diversus Kellogg. limitatus Kellogg. Giebelia mirabilis Kellogg. Puffinus bulleri. Lipeurus diversus Kellogg. limitatus Kellogg. Giebelia mirabilis Kellogg. (2) Oceanites oceanicus (‘' Thalassidroma wilsoni;” Osborn, Ins. Aff. Dom. An., 1896, p. 235). Lipeurus subangusticeps Piaget. Phaéthon ethereus. Docophorus phactonus Osborn. Sula alba. LTipeurus pullatus Nitzsch. Sula bassana. Lipeurus pullatus Nitzseh. (2) Sula sp. (Osborn; Ins. Aff. Dom. An., 1896, p. 217.) Docophorus bassane Denny. Phalacrocorax penicillatus. Lipeurus farallon Kellogg. Menopon titan Nitzsch var. incompositum Kellogg. Phalacrocorax dilophus. LTipeurus longicornis Piaget. Phalacrocorax dilophus albociliatus. Tipeurus faralloni Kellogg. toxoceros Nitzsch. Pelecanus erythrorhynchus. LTipeurus forficulatus Nitzsch. bifasciatus Piaget. Colpocephalum unciferum Kellogg. Menopon consanguneum Piaget. titan Nitzsch var. impar Kellogg. Pelecanus californicus. Tipeurus for ficulatus Nitzsch. toxoceros Nitzsch. (Straggler?) Colpocephalum unciferum Kellogg. Menopon titan Nitzsch var. linearis Kellogg. Fregata aquila. Tipeurus gracilicornis Piaget, var. major Kellogg. Colpocephalum spineum Kellogg. Menopon aurifasciatum Kellogg. No. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 85 Merganser serrator. Docophorus icterodes Nitzsch. LTipeurus squalidus Nitzsch. temporalis Nitzsch. Trinoton lituratum Nitzsch. luridum Nitzsch. Anas boschas. Docophorus icterodes Nitzsch. LTipeurus squalidus Nitzsch. Trinoton luridum Nitzsch. Anas americana. Trinoton luridum Nitzsch. Anas carolinensis. Docophorus icterodes Nitzseh. Trinoton luridum Nitzsch. Anas discors. Trinoton lituratum Nitzsech. Spatula clypeata. Tipeurus squalidus Nitzsch. Trinoton lituratum Nitzsch. luridum Nitzsch. Dafila acuta. Docophorus icterodes Nitzsch. Trinoton lituratwm Nitzsch. luridum Nitzsch. Aythya americana. Docophorus icterodes Nitzsch. _Aythya marila nearctica. Docophorus icterodes Nitzsch. Trinoton luridum Nitzsch. Aythya affinis. Docophorus icterodes Nitzsch. Charitonetta albeola. LTipeurus squalidus Nitzsch. Eniconetta stelleri. Tipeurus squalidus Nitzsch. Oidemia deglandi. TInpeurus constrictus Kellogg. Menopon loomisi Kellogg. Oidemia perspicillata. Docophorus icterodes Nitzsch. occidentalis Kellogg. Lipeurus constrictus Kellogg. 86 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Oidemia sp. (‘‘ Butter-bill Coot, Oidemia;” Osborn, Ins. Aff. Dom, An., 1896, p. 248.) Trinoton minor Osborn. Erismatura rubida. Docophorus icterodes Nitzsch. pertusus Nitzsch. Lipeurus squalidus Nitzsch. Trinoton luridum Nitzsch. Anser albifrons. LTipeurus jejunus Nitzsch. Branta canadensis. Ornithobius goniopleurus Denny. (?) Olor buccinator. (Osborn, Ins. Aff. Dom. An., 1896, pp. 217, 236.) Docophorus cygnt Denny. Ornithobius cygni Linneus. (2) Ajaja ajaja. (Osborn, Ins. Aff. Dom. An., 1896, p. 217.) Docophorus sphenophorus Nitzsch. Guara alba. Docophorus bisignatus Nitzsch. Botaurus lentiginosus. Tipeurus botaurt Osborn. Botaurus sp. (Osborn, Ins. Aff. Dom An., 1896, p. 234.) LTipeurus leucopygus fasciata Piaget. Ardea egretta. Colpocephalum laticeps Kellogg. Ardea virescens. Colpocephalum diffusum Kellogg. Grus americana. Colpocephalum assimile Piaget. Rallus obsoletus. Oncophorus bisetosus Piaget, var. californicus Kellogg and Chap- man. Menopon tridens Nitzsch. Rallus virginianus. Oncophorus bisetosus Piaget, var. californicus Kellogg and Chap- man. : Menopon tridens Nitzsch. Porzana nove boracensis. Oncophorus bisetosus Piaget, var. porzane Piaget. NO. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 87 Fulica americana. Docophorus graviceps Kellogg. minutotrabeculatus Osborn. quadraticeps Kellogg. pertusus Nitzsch. Tipeurus longipilus Kellogg. luridus Nitzsch. picturatus Kellogg. Oncophorus advena Kellogg. minutus Nitzsch. Lemobothrium atrum Nitzsch. Menopon tridens Nitzsch. tridens Nitzsch, var. pacificum Kellogg. Phalaropus tricolor. Nirmus furvus Nitzsch. Recurvirostra americana. (‘‘Avocet,” Osborn, Ins. Aff. Dom. An., 1896, p. 224.) Nirmus signatus Piaget. piceus Nitzsch. Colpocephalum uniforme Kellogg. Menopon indistinctum Kellogg. Philohela minor. Lipeurus infuscatus Osborn. Menopon crocatum Nitzsch. Tringa maculata. Colpocephalum ochraceum Nitzsch. Tringa minutilla. Docophorus fusiformis Denny. Nirmus complexivus Kellogg and Chapman. Tringa sp. ~ Mrmus fissus Nitzsch, var. major Kellogg. Tringa sp. Docophorus cordiceps Giebel. ‘ Black-billed Sandpiper” (Osborn; Ins. Aff. Dom. An., 1896, p. 217). Docophorus fusiformis Denny. Calidris arenaria. Nirmus actophilus Kellogg and Chapman. complexivus Kellogg and Chapman. Colpocephalum spinulosum Piaget, var. minor Kellogg and Chap- mal. Limosa fedoa. Nirmus cordatus Osborn. Limosa hemastica. Nirmus cordatus Osborn. Menopon crocatum Nitzseh. 88 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Bartramia longicauda. Docophorus testudinarius Denny. Lipeurus infuscatus Osborn. Actitis macularia. Docophorus cordiceps Giebel. Nirmus furvus Nitzsch, var. ravus Kellogg. Numenius longirostris. Docophorus testudinarius Denny. Charadrius squatarola. Docophorus fuliginosus Kellogg. Nirmus incenis Kellogg and Chapman. Colpocephalum timidum Kellogg. Charadrius dominicus. Nirmus orarius Kellogg. Colpocephalum timidum Kellogg. AKgialitis vocifera. ; Nirmus boephilus Kellogg. parallelus Osborn. ZEgialitis semipalmata. Docophorus fuliginosus Kellogg. Nirmus opacus Kellogg and Chapman. Colinus virginianus. Nirmus abruptus Osborn. LTipeurus dissimilis Piaget. Goniodes ortygis Piaget. Menopon pallescens Nitzsch. (2) Colinus virginianus. (‘ Quail;” Osborn, Ins. Aff. Dom. An., 1896, p. 230.) Gontodes dispar Nitzsch. Oreortyx pictus plumiferus. = Lipeurus docophoroides Piaget, var. californicus Kellogg and Chap- man. Callipepla californica. Lipeurus docophoroides Piaget. Goniodes mammillatus Rudow. Dendragopus obscurus fuliginosus. LTipeurus perplexus Kellogg and Chapman. (2) Dendragopus obscurus richardsoni. (Packard, Ann. Rept. U.S. Geol. Survey, 1872, p. 731.) © Goniodes merriamanus Packard. Lagopus lagopus. LTipeurus protervus Kellogg. Goniodes mammillatus Rudow. Menopon striatum Kellogg. No. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 89 Tympanuchus americanus. Goniodes cupido Giebel. Pedioceetes phasianellus columbianus. Lipeurus perplexus Kellogg and Chapman. Goniodes mammillatus Rudoay. Gallus gallus. (2) Colpocephalum longicaudum Piaget. (Osborn, Ins. Aff. Dom. An., 1896, p. 246.) Gallus domesticus. (Domestic fowl.) Lipeurus heterographus Nitzsch. variabilis Nitzsch. Menopon biseriatum Piaget. pallidum Nitzsch. Meleagris gallopavo. (Turkey.) Tipeurus polytrapezius. Goniodes stylifer Nitzsch. Phasianus nycthemerus. Lipeurus introductus Kellogg. Goniocotes creber Kellogg. Goniodes cervinicornis Giebel. Menopon monostechum Kellogg. Pavo cristatus. (Peacock.) Goniodes falcicornis Nitzsch. Columba livia. (Domestic pigeon.) Lipeurus baculus Nitzsch. Goniocotes compar Nitzsch. Goniodes damicornis Nitzsch. Colpocephalum longicaudum Piaget. Menopon longicephalum Kellogg. Elanoides forficatus. (‘‘Swallow-tailed kite;” Osborn, Ins. Aff. Dom. An., 1896, p. 246.) Colpocephalum flavescens Nitzsch. Elanus leucurus. Nirmus fuscus Nitzsch. Colpocephalum osborni Kellogg. Menopon decoratum Kellogg. Elanus sp. (‘4 Milvus sp.”; Osborn, Ins. Aff. Dom. An., 1896, p. 244.) Menopon fulvofasciatum Piaget. Circus hudsonius. Nirmus fuscus Nitzsch. Accipiter velox. Docophorus platystomus Nitzsch. Nirmus fuscus Nitzsch. 90 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Accipiter atricapillus striatulus. Nirmus fuscus Nitzsch. Buteo borealis calurus. Nirmus fuscus Nitzsch. Buteo borealis lucusanus. Nirmus fuscus Nitzsch. Buteo lineatus. Docophorus buteonis Packard. Buteo swainsoni. Docophorus platystomus Nitzsch. Nirmus fuscus Nitzsch. Archibuteo lagopus sancti-johannis. Docophorus taurocephalus Kellogg. Nirmus fuscus Nitzsch. Colpocephalum flavescens Nitzsch. Aquila chrysaétos. Docophorus pictus Giebel. _ Colpocephalum flavescens Nitzsch. Aquila imperialis. Docophorus platystomus Nitzsch. Thrasaétos harpyia (‘‘Harpy eagle”; Osborn, Ins. Aff. Dom. An., 1896, p. 247). Lemobothrium giganteum Nitzseh. Haliaétus leucocephalus. Docophorus halieti Osborn. Nirmus discocephalus amblys Kellogg. LTipeurus pustulatus Osborn. Colpocephalum flavescens Nitzsch. Falco peregrinus anatum. Nirmus fuscus Nitzsch. Falco sparverius deserticola. Nirmus fuscus Nitzsch. Falco sparverius peninsularis. Nirmus fuscus Nitzsch. Polyborus cheriway. Nirmus splendidus Kellogg. Colpocephalum maculatum Piaget. Strix pratincola. Docophorus rostratus Nitzsch. Asio wilsonianus. Docophorus cursor Nitzsch. Syrnium nebulosum. Docophorus speotyti Osborn. syrnvi Packard. NO. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 91 Scotiaptex cinerea. Oncophorus remotus Kellogg and Chapman. Bubo virginianus. Docophorus bubonis Osborn. cursor Nitzsch. Colpocephalum subpachygaster Piaget. Nyctea nyctea. Docophorus ceblebrachys Nitzsch. Speotyto cunicularia hypogea. Docophorus speotyti Osborn. Crotophaga sulcirostris. LTipeurus macgregori Kellogg. Coccyzus americanus (‘‘ Yellow-billed cuckoo,” Osborn, Ins. Aff. Dom. An., 1896, p. 222). Docophorus coccygt Osborn. Coccyzus americanus occidentalis. Docophorus latifrons Nitzsch, var. occidentalis Kellogg. Coccyzus erythrophthalmus. Nirnus fenestratus Nitzseh. Piaya cayana thermophila. Nirmus atopus Kellogg. Colpocephalum diffusum Kellogg. Ceryle alcyon. Colpocephalum pustulosum Piaget. Dryobates villosus. Docophorus superciliosus Nitzsch. Nirmus candidus Nitzsch. Dryobates pubescens. Docophorus evagans Rudow. Dryobates pubescens gairdneri. Menopon funereum Kellogg and Chapman. Dryobates nuttalli. Docophorus singularis Kellogg and Chapman. Xenopicus albolarvatus. Docophorus californiensis Kellogg. Sphyrapicus thyroideus. Docophorus californiensis Kellogg. Ceophleus pileatus. Nirmus marginatus Osborn. Melanerpes formicivorus bairdii. Docophorus californiensis Kellogg. Melaxerpes formicivorus angustifrons. Docophorus californiensis Kellogg. 92 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Melanerpes carolinus. Nirmus candidus Nitzseh. Melanerpes uropygialis. Menopon precursor Kellogg. Melanerpes wagleri. Physostomum invadens Kellogg. Colaptes auratus. Docophorus jungens Kellogg. alienus Kellogg. Nirmus candidus Nitzsch. Chordeiles virginianus henryi. Lipeurus macrocephalus Kellogg. Cheetura pelagica. Niteschia pulicaris Nitzsch. dubius Kellogg. Trochilus colubris. Physostomum lineatum Osborn. Trochilus alexandri. Nirmus vulgatus Kellogg. Colypte coste. Physostomum prominens Kellogg and Chapman. Colypte anna. Nirmus eustigmus Kellogg. Selasphorus rufus. Nirmus snodgrassi Kellogg. Tyrannus tyrannus. Physostomum angulatum Kellogg. Tyrannus verticalis. Nirmus fedus Kellogg and Chapman. Tyrannus atra. Docophorus buteonis Packard (probably a case of straggling; see Buteo lineatus). Tyrannus sp. (Osborn, Ins. Aff. Dom. An., 1896, p. 228.) Nirmus tyrannus Osborn. Myiarchus cinerascens. Docophorus communis Nitzseh. Jusco-ventralis Osborn. rufus Kellogg. Nirmus foedus Kellogg and Chapman. vulgatus Kellogg. Physostomum sp. Menopon distinctum Kellogg and Chapman. Myiarchus cinerascens nuttingi. Docophorus rufus Kellogg. No. 1183. - NORTH AMERICAN MALLOPHAGA—KELLOGG. 93 Sayornis saya. Nirmus foedus Kellogg and Chapman. Physostomum sp. Contopus virens. Docophorus fuscowentralis Osborn. Contopus richardsonii. Physostomum sp. = Empidonax difficilis. Docophorus communis Nitzsch. Nirmus ductilis Kellogg and Chapman. vulgatus Kellogg. Physostomum sucinaceum Kellogg. sp.? Elainea subpagana. Physostomum pallens Kellogg. Colpocephalum diffusum Kellogg. Otocoris alpestris. Docophorus communis Nitzsch. Otocoris alpestris chrysolema. Docophorus communis Nitzsch. Otocoris sp. (Osborn; ‘shore lark.” ) Docophorus communis Nitzsch. Cyanocitta stelleri frontalis. Docophorus communis Nitzseh. Nirmus vulgatus Rudow. Aphelocoma californica. Docophorus communis Nitzseh. Menopon persignatum Kellogg and Chapman. Corvus corax sinuatus. Docophorus distinctus Kellogg. Colpocephalum subaequale Nitzsch. Corvus americanus. Docophorus corvi Osborn. Nirmus secundarius Osborn. rotundatus Osborn. Colpocephalum subaequale Nitzsch. Menopon mesoleucum Nitzsch, var. americanum Kellogg. interruptus Osborn. (2?) Corvus americanus. Tipeurus corvi Packard. (Osborn, Ins. Aff. Dom. An., p. 221, thinks this Lipeurus is an immature specimen of Docophorus corvt Osborn. ) Dolichonyx oryzivorus. Menopon expansum Osborn. 94 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. Molothrus ater. Docophorus transpositus Kellogg. Xauthocephalus xanthocephalus. Nirmus ornatissimus Giebel, var. vanthocephali Osborn. Agelaius phoeniceus. Docophorus communis Nitzsch. agelait Osborn. Nirmus illustris Kellogg. - ornatissimus Giebel. Sturnella magna. Nirmus picturatus Osborn. Sturnella magna neglecta. Docophorus communis Nitzseh. Icterus galbula. Menopon crassipes Piaget. Icterus bullocki. Docophorus communis Nitzsch. Scolecophagus cyanocephalus. Docophorus communis Nitzsch. (?) Quiscalus quiscula. (‘¢ Crow-blackbird,” Osborn, Ins. Aff. Dom. An., 1896, p. 219.) Docophorus quiscalt Osborn. Amblycercus holosericeus. Nirmus virgatus Kellogg. Colpocephalum diffusum Kellogg. Coccothraustes vespertinus montanus. Menopon funereum Kellogg and Chapman. _Carpodacus purpureus californicus. Docophorus communis Nitzseh. Nirmus vulgatus Kellogg. Carpodacus mexicanus frontalis. Docophorus communis Nitzseh. Nirmus vulgatus Kellogg. Physostomum microcephalum Kellogg. Loxia curvirostra minor. Docophorus compar Piaget. (?) Acanthis linaria (Osborn; Ins. Aff. Dom. An., 1896, p. 224). Nirmus cyclothorax Nitzseh. Spinus tristis, Menopon carduelis Piaget. incertum Kellogg. Spinus psaltria. Docophorus communis Nitzsch. No. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. Spinus pinus. Docophorus communis Nitzsch. Piectrophenax nivalis. Docophorus hamatus Packard. Nirmus thoracicus Packard. Calcarinus lapponicus. Docophorus communis Nitzseh. Ammodramus sandwichensis. Docophorus communis Nitzsch. Physostomum diffusum Kellogg. Chondestes grammacus strigatus. Docophorus communis Nitzseh. Nirmus vulgatus Kellogg. Menopon incertum Kellogg. Zonotrichia leucophrys intermedia. Docophorus communis Nitzsch. Zonotrichia leucophrys gambelii. Docophorus communis Nitzsch. Nirmus vulgatus Kellogg. Zonotrichia coronata. Docophorus communis Nitzsch. Nirmus vulgatus Kellogg. Physostomum diffusum Kellogg. Menopon mestum Kellogg and Chapman. Spizella socialis arizone. Docophorus communis. Junco hyemalis. Docophorus communis Nitzsch. Nirmus vulgatus Kellogg. Junco hyemalis oregonus. _ Physostomum diffusum Kellogg. Junco hyemalis thurberi. Docophorus mirinotatus Kellogg and Chapman. Junco sp. Physostomum diffusum Kellogg, var. pallidum Kellogg. Amphispiza belli. Docophorus communis Nitzsch. Nirmus lautiusculus Kellogg and Chapman. Melospiza fasciata samuelis, Docophorus communis Nitzsch. Colpocephalum chrysopheum Kellogg. Menopon mestum Kellogg and Chapman Physostomum sp. Melospiza fasciata heermanii. Colpocephalum grandiculum Kellogg and Chapman. 96 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL Passerella iliaca. Physostomum frenatum Nitzsch. angulatum Kellogg. Pipilo erythrophthalmus. Physostomum frenatum Nitzsch. Menopon melanorum Kellogg. Pipilo maculatus megalonyx. Nirmus vulgatus Kellogg. Physostomum sp. Pipilo fuscus crissalis. Docophorus communis Nitzseh. Nirmus vulgatus Kellogg. Colpocephalum grandiculum Kellogg and Chapman. Physostomum sp. Cardinalis cardinalis. Docophorus communis Nitzseh. Cardinalis cardinalis igneus. Docophorus communis Nitzsch. Habia ludoviciana. Nirmus pallidus Osborn. Habia melanocephala. Docophorus communis Nitzsch. Guiraca czerulea eurhyncha. Docophorus communis Nitzsch. Nirmus vulgatus Kellogg. Passerina ameena. Nirmus vulgatus Kellogg. , Passerina versicolor. Physostomum australe Kellogg. Piranga ludoviciana. Docophorus communis Nitzsch. Pheenicothraunis fuscicauda. Docophorus panamensis Kellogg. Colpocephalum diffusum Kellogg. Passer domesticus. Nirmus cyclothorax Nitzsch. Progne subis. Docophorus domesticus Kellogg. Nirmus gracilis Nitzsch. Menopon rusticum Giebel. dissimile Kellogg. Progne subis hesperus. Docophorus domesticus Kellogg. NO. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. 97 Petrochelidon lunifrons. Docophorus excisus Nitzsch, var. major Kellogg. Nirmus longus Kellogg. Menopon malleus Nitzsch. Chelidon erythrogaster. Nirmus longus Kellogg, var. domesticus Kellogg and Chapman. Tachycineta bicolor. Docophorus excisus Nitzsch, var. major Kellogg. Nirmus longus Kellogg. Ampelis garrulus. Docophorus communis Nitzsch. Nirmus brachythorax Giebel. Ampelis cedrorum. Docophorus communis Nitzsch. incisus Kellogg. Nirmus brachythorax Giebel. Physostomum sp. Phainopepla nitens. Nirmus fedus Kellogg and Chapman. peninsularis Kellogg. Lanius borealis. Docophorus communis Nitzseh. Lanius ludovicianus excubitorides. Docophorus communis Nitzseh. Lanius ludovicianus gambeli. Docophorus communis Nitzsch. Nirmus fedus Kellogg and Chapman. Vireo solitarius cassini (plumbeus?). Docophorus communis Nitzsch. Vireo bellii pusillus. Physostomum sp. Saltator albicollis. Colpocephalum diffusum Kellogg. Chiroxiphia lanceolata. Physostomum invadens Kellogg. Colpocephalum diffusum Kellogg. Arremonops striaticeps. Colpocephalum diffusum Kellogg. Protonotaria citrea. Physostomum pallens Kellogg. Helminthophila celata lutescens. Nirmus vulgatus Kellogg. Proce. N. M. vol. xxii——7 98 Dendroica estiva, Docophorus conmunis Nitzsch. Nirmus interpositus Kellogg. vulgatus Kellogg. Menopon ridulosum Kellogg and Chapman. PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Dendroica vieilloti. Nirmus interpositus Kellogg, Colpocephalum diffusum Kellogg. ‘ Icteria virens longicauda. Nirmus fedus Kellogg and Chapman. Cinclus mexicanus. Docophorus laticeps Giebel, var. americanus Kellogg. Nirmus vulgatus Kellogg. Galeoscoptes carolinensis. Nirmus orpheus Osborn. Harporhynchus rufus. Docophorus communis Nitzsch. Helodytes brunneicapillus. Menopon distinctus Kellogg and Chapman. malleus Nitzsch. Thryothorus bewicki spilurus. Docophorus communis Nitzsch. mirus Kellogg and Chapman. Menopon incertum Kellogg. Parus inornatus. Docophorus communis Nitzsch. Parus atricapillus occidentalis. Docophorus ruttert Kellogg, Parus gambeli, Nirmus vuigatus Kellogg. Parus rufescens neglectus. Nirmus vulgatus Kellogg. Psaltriparus minimus. Colpocephalum fumidum Kellogg. Menopon robustum Kellogg. Auriparus flaviceps. Nirmus audax Kellogg. Regulus satrapa. (‘‘Golden-crowned kinglet;” Osborn, Ins. Aff. Dom. An., 1896, p. 248.) Physostomum frenatum Nitzsch. Turdus ustulatus. Menopon incertum Kellogg. Turdus aonalaschke auduboni. Docophorus communis Nitzsch. No. 1183. NORTH AMERICAN MALLOPHAGA—KELLOGG. ides) ws) Turdus minor. Menopon fuscomarginatus Osborn. Merula migratoria. Docophorus communis Nitzsch Nirmus vulgatus Kellogg. simplex Kellogg. Sialia sialis. Docophorus incisus Kellogg. stalit Osborn. Sialia mexicanus occidentalis. Docophorus communis Nitzsch. Nirmus vulgatus Kellogg. MAMMALS. Cattle. Trichodectes scalaris Nitzsch. Horse. Trichodectes parumpilosus Piaget. Goat. Trichodectes climax Nitzsch. limbatus Gervais. Sheep. Trichodectes sperocephalus Nitzsch. Cat. Trichodectes subrostratus Nitzseh. Putorius ermineus. Trichodectes retusus Nitzsch. (?) Putorius vulgaris (‘‘ Weasel”; Osborn, Ins. Aff. Dom. An., 1896, p. 237). Trichodectes retusus Nitzsch. Erethizon dorsatum. Trichodectes setosus Giebel. Procyon lotor. Trichodectes crassus Nitzsch. Geomys bursarius. Trichodectes geomydis Osborn. Thomomys botte. Trichodectes geomydis Osborn. (?) Cariacus virginianus (‘‘Deer”); Osborn, Ins. Aff. Dom. An., 1896, p. 241). Trichodectes parallelus Osborn. Cariacus columbianus. Trichodectes tibialis Osborn. Castor canadensis. Trichodectes castoris Osborn. 100 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXU. Spilogale interrupta. Trichodectes mephitidis Osborn. Mephites mephitica. Trichodectes mephitidis Osborn. Cavia sobaya. Gyropus ovalis Nitzsch. gracilis Nitzsch. SUMMARY. Genera of North American birds from which Mallophaga are ECOL oii rcs aye weed Se, ona ge eet ee en Species of North American birds from which Mallophaga are ROO ROS 0 MRE oMee MMM raids HLM Be Ree a Dae oc Species of North American mammals (including domestic ani- mals) from which Mallophaga are recorded.........-.-..--.-- 167 257 NEW SPECIES OF NOCTURNAL MOTHS OF THE GENUS CAMPOMETRA, AND NOTES. By Joun B. Sm1TH, Se. D., Rutgers College, New Brunswick, New Jersey. The genus Campometra was described in 1852 by Guenee,! and the sole species and therefore generic type, amella, was figured (Pl. X VIIT, fig. 8). Mr. Grote never positively identified this species, although the picture is good and the markings are characteristic. In the Neumoe- gen collection he did note, however, to a specimen of Hubolina stylobata a Suggestion that it might be C. amella, and that proves to be correct without reasonable doubt. I have not seen the Guenée type, but both description and picture apply to stylobata and to nothing else. The type of stylobata I saw in the collection of the British Museum, and on direct comparison with the type of Homoptera integerrima Walker found the two identical. The synonymy then seems to be fairly well established, as follows: Campometra amella GUENEER, Sp. Gen. Noct., III, 1852, p. 25, pl. x vin, fig. 8. Homoptera integerrima WALKER, Cat. Brit. Mus., Het., XIII, 1857, p. 1057. Homoptera stylobata HARVEY, Can. Ent., VIII, 1876, p. 155. EHubolina stylobata GROTE, New List, 1882, p. 42. The genus Hubolina was described by Harvey? for his species impar- tialis, described at the same time, and that is therefore the type of the genus. In 1882 Mr. Henry Edwards described Hubolina mesket, and in the same year Mr. Grote referred Homoptera mima Harvey to Hubolina in his New List; the genns thus containing four species, two of which its describer had not considered as referable to it when they were characterized by him. EH. impartialis differs in color and general appearance from the allied forms, and on the female, which only I have at hand, the middle tibie are lengthily spinulated, the clothing close, the armature in a single series and very prominent. Campometra amella has the legs all shorter and quite densely clothed with hair and scales, the middle tibiz with apparently a few scattered spinules. In the male there seem to be no sexual tuftings on this member. 1Spec. Gen. Noct., III, p. 25. ? Bull. Buff. Soc. Nat. Sci., II, 1875, p. 281. PROCEEDINGS U. S. NATIONAL Museum, VOL. XXII—No. 1184. see 102 PROCEEDINGS OF THE NATIONAL MUSEUM. Vou. xxu. Homoptera mima has the tibie moderately clothed, not at all spinu- lated, in the male with distinct brush-like tufts of scales on the middle pair. HH. meskei is inaccessible to me at present writing, but its appearance is such that I would expect to find it in accord with the generic type, and to impartialis and mesket I would tentatively restrict the term Bubolina.! A close ally of C. amella in structure, size, and general type of macu- lation is: CAMPOMETRA BILINEATA, new species. Ground color umber brown, a little dusted with reddish. Head im- maculate. Collar a little paler at base, tipped with steely blackish. Thoracic disk intermixed with similar deep blue-black scales, which also sprinkle the patagiz and extend over the abdomen. Abdominal tuftings brown, gray scales becoming dominant at the sides and beneath. Primaries with clean, well-marked ornamentation. Basal line single, black, broken, accompanied by a brownish shade which breaks the otherwise solidly dark basal space, the tint being bluish black. Trans- verse anterior line single, upright, with a small outward bend just below the cell. Transverse posterior line single, red brown, irregu- larly crenulated, outcurved over the reniform, with a deep acute inward tooth in the submedian interspaces. Subterminal line incomplete, vaguely defined, white, slender, denticulate in the costal region, lost below that point except as it is marked by dusky clouds to vein 2, below which it is brown and slender to the margin. A broken blackish transverse line just before the margin. Just within the center of the wing are two upright, slightly wavy, prominent black lines, just enough sey arated to avoid a band. The inner is somewhat narrower, sharper, and more intensely black, the outer broader and a little diffuse. Orbicu- lar wanting in the specimen. Reniform large, irregularly oval, white, with narrow brown central lines. Secondaries a little more powdery and diffuse in ground color. A geminate black line at basal third, which does not reach either margin. A broad, dusky, submarginal shade, which is suffused with rusty reddish at its middle and terminates at the anal angle in a steely black spot. A broken, narrow, black termi- nal line and the fringes with a crenulated black interline. Beneath whitish, powdery, wings darkening outwardly. Primaries with an inner dusky band marked on the costa only, and an outer one which extends nearly half across the wing. Secondaries with an inner dusky band, which forms a lunule in the cell, a broken, diffuse, median shade and a submarginal clouding which forms a marked dusky patch above the anal angle. Expands 1.75 inches=44 mm. ! Dr. Dyar informs me that the type of meskei is a male, has unarmed middle tibie, and no sexual tuftings. On general color and wing form the two may yet be held together until more material gives us better basis for other action. } NO. 1184. _ NEW NOCTURNAL MOTHS—SMITH. 103 Tyve.—No. 4316, U.S.N.M. Habitat.—Brownsville, Texas; June 10; Townsend, No. 544. A single female specimen from the U.S. National Museum. The resembiance to amella in size, form, and general appearance is obvious; but the distinctive feature, the parallel black lines near the center of the wing, is equally prominent. A further difference is that in amella the subterminal line is well defined, angulated and prominent, while in the new species this line is practically obsolete. It should be added to the description that an irregularly waved, somewhat diffuse bluish black band runs through the subterminal space and crosses the subterminal line at its inception on the costa. CAMPOMETRA CINCTIPALPIS, new species. Ground color a deep purplish red-brown, the primaries with elevated black, squamose vestiture that gives a velvety appearance. Front with a paie yellowish, transverse band, a pale tuft at base of each: antenna, and the palpi pale banded. Thorax purplish without defined markings, Primaries with an intermingling of pale and yellowish seales that gives a somewhat mossy appearance and obscures the ordi- nary maculation. Basal line faintly traceable by black scales. Trans- verse anterior line upright, blackish, a little wavy, preceded by a purplish shade which is itself limited by a darker brown, diffuse, Shading; followed by a mossy brown shade line. A narrow, black, irregular median line of elevated scales. ‘Transverse posterior line narrow, black, irregularly waved and toothed, squarely exserted over the reniform and almost as squarely inset beneath it; followed at some distance by a broader, less defined, and more even brown shading. Subterminal line distinet, pale, irregularly but not greatly sinuated. Orbicular small, round, incompletely and obscurely brown ringed and with a brown central dot. Reniform not defined, marked by a small upper and larger lower white spot, the two connected by a narrow, white line. Secondaries uniform smoky brown, the fringes with a pale inter- line. Beneath, primaries smoky, powdery, with a partial extramedian transverse line. Secondaries whitish, powdery at base, with a brown diseal spot and a crenulated brown median line, beyond which the wing is brown nearly to the margin, which is again whitish. Expands 1.35 inches=34 mm. Type.—No. 4315, U.S.N.M. Habitat.—Cocoanut Grove, Florida; E. A. Schwarz. A single defective female from the U.S. National Museum. ‘The apices of both wings are rubbed and broken, but the specimen is other- wise very fair, all the markings being discernible on one side or the other. It is the darkest species of the genus and has no contrasts in maculation. The immaculate secondaries will further serve to differen- tiate it from the other described forms. The middle tibia seems to have no obvious spinose armature, but has a central ring tuft of scales. 104 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. CAMPOMETRA MIMA Harvey. The most common of the species, and as they run, very sharply defined. The transverse anterior line is geminate, both defining lines black, rather widely separated, the intervening space dusky so as to form an evenly outcurved dusky band. The transverse posterior line is also black, well marked, and squarely exserted beyond the reniform. A yellowish or reddish brown shade lightens the wing and dominates the impression gained by an ordinary examination of the species. The middle tibiz are unarmed and in the male have a very heavy scale tuft; but there are no hair pencils. Tene specimens are under examination: San Diego, Texas, April 26, May 25; Bastrop County, and other Texan localities; Florence, Tucson, Catalina Springs April 11, Oracle, July 21, and other locali- ties in Arizona. The tendency in the variation is to a more indistinct maculation. CAMPOMETRA FRATERNA, new species. Resembles mima in all essential characters and differs from that species in the powdery, uniform ashen gray primaries lacking the brownish shadings, and on which the maculation is only feebly writ- ten. The transverse anterior line shows no tendency to band and, while the other lines and shades of mina are all traceable, none are well marked. In the structure of the middle tibie of the male the species is like its ally. Type.—No. 4313, U.S.N.M. I have six specimens, five of them females, from Death Valley (April), Oracle (July 7), and Catalina Springs (May 5), Arizona. All are from the U.S. National Museum, collected by Messrs. Koebele or Hubbard and Schwarz. CAMPOMETRA MINOR, new species. Smaller than mima throughout, few of the specimens exceeding and some not reaching 26 mmn., or a trifle over 1 inch, the primaries even, powdery gray, none of the markings well written, though so far as traceable, similar to mima, It is a slighter, narrower winged form than fraterna, which equals mima in average size and has the primaries more squared. No male of this species has been available. Of the five females four are from the Hulst collection, probably taken near Tucson Arizona, and one is from Catalina Springs (April 11), taken by Mr. Schwarz. The latter has a white shading over the reniform, extending beyond the transverse posterior line almost to the subter- minal line, the edges of this shade being indefined. The smoky margin of the secondaries is narrower than in the allied forms and there is less tendency to a banding. Type.—No. 4314, U.S.N.M. No. 1184. NEW NOCTURNAL MOTHS—SMITH. 105 Altogether the species are left in a somewhat unsatisfactory condi- tion. Amella, bilineata, and cinctipalpis are probably congeneric and, except for a doubt about the armature of cinctipalpis, are strictly referable to Campometra. Mima, fraterna, and minor are close allies, yet I think, distinct, and they differ from Campometra in the totally unarmed middle tibia, which in the male is very heavily clothed with long scales forming a real tufting. I prefer leaving them with Campometra temporarily, until all the allied genera can be carefully studied, but suggest the term Heter- anassa in case generic separation seems desirable. SYNOPSIS OF THE SOLENID® OF NORTH AMERICA AND THE ANTILLES. By WiLu1AmM H. DALL, Curator, Division of Mollusks. In revising the group for the purpose of monographing the fossil species So many changes in nomenclature and distribution were found to be involved that it was thought the following summary would prove useful to students of the recent forms: EAST AMERICAN SPECIES. Genus S@LEIN (Linmcus, 1758) Scopolk 1777: (Vagina Megerle, 1811; + Hypogwa and Hypogeoderma Poli, 1791-1795; + Listera, Leach manuscript, Gray, 1852.) Type, Solen marginatus Pulteney. 1. Solen viridis Say, 1822; Rhode Island (Totten) to Georgia (Postell). Section SOLENA Morch, 1852. (Solena sp. Browne, nonbinomial, 1756; + Hypogella Gray, 1854.) Type, 8S. obliqua Spengler = 8S. ambiguus Lamarck. 2. Solen (Solena) obliqua Spengler, 1793; Cuba, Porto Rico, St. Thomas. S. rudis Sowerby, 1874, not C. B. Adams, 1852; + philippinarwm Sowerby, 1874, not Hanley, 1845, are synonymous. Genus ENSIS Schumacher, 1817. (Ensatella Swainson, 1840, -- Solen Leach, 1852.) Type, Ensismagnus Schumacher. 1. Ensis directus Conrad, 1843; Labrador to Indian Key, Florida. Pliocene to recent. i. ** americana Beck” of H. and A. Adams, 1856, is probably a manu- script name. Solen stliqua Chickering, 1855, not Linnzeus, 1758, is a synonym. This species was generally confounded with Solen magnus of Schumacher, under the name of Solen ensis Linneeus, by the earlier American authors. PROCEEDINGS U. S, NATIONAL MUSEUM, VOL. XXII—No. 1185. 107 108 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. 2. Ensis minor Dall; Cape May to Florida and Texas. This is Solon ensis var. minor of some of the earlier writers, and bears to E. directus the same relation that Mnsis ensis Linneeus of Kurope does to the north European H. magnus Schumacher. It differs from the young of H. directus in having the valves wider behind than in front and relatively narrower as a whole. Genus SILIQUA Megerle, 1811. (Leguminaria Schumacher, 1817; + solecurtus A Blainville, 1825; + Aulus Oken, 1835, not Oken 1815; + Solecurtoides Desmoulins, 1832; + Solenocurtus Sowerby, 1839; + Machewra Gould, 1841.) Type, Solen radiatus Linnzeus. 1. Siliqua squama Blainville, 1824; Grand Banks of Newfoundland and Gulf of St. Lawrence. This is Machera nitida Gould, 1841, and Cultellus medius Sowerby nee Gray), Conch. Icon., 1874. 2. Siliqua costata Sm, 1822; Gulf of St. Lawrence south to Cape Hatteras, North Carolina, in suitable localities. The following are synonymous names: Solecurtoides nahantensis Des- moulins, 1832; S. sayi Gray, 1833; S. radiatus Ravenel (not Linnzeus), 1834; Oultellus grayanus Sowerby (not Dunker?), 1874; Cultellus sub- sulcatus Sowerby, 1874; Cuitellus belchert (as of Gray, manuscript) Sowerby, 1874; not C. costatus Middendorf, 1847, nor Sowerby, 1874. Genus PSAMMOSOLEN Risso, 1826. (= Psammobia Risso, 1826, err. typ.; + Solecurtus B, Blainville, 1825; +- Macha Oken, 1835; + Adasius Leach, 1852; not Macha Philippi, 1853, nor Psam- mosolen Hupé, 1854.) Type, Solen strigilatus Linnzeus. 1. Psammosolen sancte-marthe (Chemnitz) Orbigny, 1853; North Carolina, Bermuda, the Antilles, and south to Rio Janeiro (Dunlap). 2. Psammosolen cumingianus Dunker, 1861; North Carolina, to Texas and Sao Paulo, Brazil. WEST AMERICAN SPECIES. Genus SOLEN (Linneeus) Seopoli. 1. Solen sicarius Gould, 1850; Vancouver Island to San Pedro, Cali- fornia; Japan, A. Adams (?). 2. Solen rosaceus Carpenter, 1853; Santa Barbara, California, south to the Gulf of California; La Paz. 3. Solen mexicanus Dall; west coast of Tehuantepec, Mexico. 4, Solen (Solena) rudis C. B. Adams, 1852; Panama. Confounded with S. obliquus Spengler of the Antilles by Clee and Sowerby. Genus ENSIS Schumacher. 1. Ensis californicus Dall; Monterey, California, south to the Gulf of California; La Paz. No. 1185. SYNOPSIS OF THE SOLENIDA—DALL. 109 Genus SILIQUA Megerle. 1. Siliqua lucida Conrad, 1838; Monterey to San Diego, California. Confounded with the young of S. nuttallii by Carpenter, 1863, and Gabb, 1868; also, according to Conrad, with S. radiata Linneus. 2, Siliqua media Gray, 1839; Okhotsk and Bering seas and north- ward to the Arctic Ocean at Cape Lisburne. Machera costata Middendorf, 1851, not Say, 1822; + S. borealis Con- rad, 1867, not Cultellus mediws Sowerby, Conch. Icon., 1874, = S. squama Blainville. 3. Siliqua patula Dixon, 1788,-Okhotsk Sea; the southern border of Bering Sea, and the Gulf of Alaska to Sitka. Described from Cooks Inlet, Alaska. The following names are synonyms: Solen maximus Wood, 1815, not Gmelin, 1792; S. gigas Dillwyn, 1817; S. grandis (Hinds Manuscript as of Gmelin) Dunker, 1861, and Carpenter, 1863; S. splendens Chenu, 1845 and 1862. Large; with submedian beaks and straight rib. The following are discrimina- ble varieties, but apparently connected by gradations with the typical S. patula. 4, Siliqua (patula var.) alta Broderip and Sowerby, 1829; Bering Sea and Strait. This is figured under the name of Culiellus costatus by Sowerby, Conch. Icon., 1874, but is not the costatus of Say. It is short and broad with very anterior beaks and straight rib. 5, Stiliqua (patula var.) nuttallic Conrad, 1838, Lituya Bay, Alaska, south to Oregon, and California as far as Monterey. S. americana Chenu, 1845, may be the same, but I do not know it; S. californica Conrad, 1868, and 8S. nuttalt Sowerby, 1874, are synony- mous. The shell is very straight, brilliantly polished, narrower than the typical S. patula and with a much more oblique rib. The beaks are less anterior than in S. alta. NOTES. Solen tenuis Broderip and Sowerby, 1829, is unidentifiable, from the absence of a figure and the excessive brevity of the description. It is not the S. tenuis Gray, in Griffith’s Cuvier, 1833. It was collected by Belcher, whose shells came mostly from northwest America. Solen “ lineatus Spengler,” appears in Moérch’s Catalogue of Poulsen’s West India shells. It is probably intended for S. linearis Spengler (in Chemnitz) and may have been based on a misidentified specimen of Ensis nvinor. Solen niveus Hanley is listed by Guppy in his Paria fauna, 1877, and was perhaps based on a young specimen of WS. obliquus Spengler, or the following species: Solen lappeanus Dunker, Moll. Marina, 1858, is said to be from the Antilles, but has not been reported from that region by anyone else. Externally it is not unlike 8. viridis Say. IK) PROCEEDINGS OF THE NATIONAL MUSE UM. VOL. XXII. Aulus (= Siliqua) rostratus Dunker, 1861, figured by Sowerby, Conch. Icon., 1874, is said to be from the Arctic Ocean, but this is certainly erroneous. Solen radiatus Linnzus, appears in Pfeiffer’s list of Cuban sheils,! but the shell intended was very likely Tagelus divisus Spengler. No species of Siliqua is known from Cuba. Krebs cites Machera lucida “Gould,” from Morch’s Yoldi catalogue, as Central American; but this is doubtless M. lucida of Conrad, from the Pacific coast of Central America. There is no large species of Hnsis on the west coast of America corre- sponding to the H#. magnus and EH. directus of the northern Atlantic, though the H. californicus is the exact analogue of the European L. ensis and the east American H. minor. Among the Siliquas on the two sides of the continent 8S. alta and S. squama, S. media and S. costata, are respectively analogous, while S. lucida finds its counterpart in the S. pulchra of Japan. SOLEN MEXICANUS, new species. Shell small, straight, parallel-sided, with anterior beaks, the anterior end obliquely truncate; the posterior end squarely truncate with the corners slightly rounded off; hinge with the teeth normal, the ligament unusually long in a very narrow groove; shell white, covered with a polished olivaceous epidermis, longitudinally striate near the ventral edges of the valves. Length of shell, 60 mm.; of ligament, 11 mm.; width of valves, 8.5 mm.; diameter, 5.5 mm. Type.—No. 120634, U.S.N.M. Specimen from the Gulf of Tehuan- tepec. This species recalls the Solen linearis of Chemnitz, which, however, is considerably longer in proportion to its width. ENSIS CALIFORNICUS, new species. Shell small, slender, arcuate, the sides nearly parallel, the valves being Slightly attenuated toward the ends, beaks anterior, the anterior trun- cation bluntly rounded, the posterior similar; color white with livid pink streaks concentrically disposed; epidermis olivaceous brilliantly polished; hinge with small and very delicate cardinals (usually broken off), one in the right and two in the left valve, the dorsal ridge compara- tively strong and elevated, shorter than the ligainent. Length of shell, 60 mm.; of dorsal tooth or ridge, 5.2 mm.; of ligament, 9 mm.; width of shell, 7 mm.; perpendicular to the chord of the are formed by the dorsal.margin of the valves, 2 mm. Type.—No. 158891, U.S.N.M. Specimen from 14 fathoms sand, off the island of San Pedro Martir, Gulf of California. Some specimens reach a length of 85 mm. This species recalls small specimens of the east American E. minor, which, however, differs by being wider distally than in front, larger when adult, with proportionately wider and more arcuate valves. 1 Archir fiir Naturgeschichte, 1840, p. 261. NO. 1185. SYNOPSIS OF THE SOLENIDA—DALL. 111 In this connection I may add some supplementary data to my “Synopsis of the Psammobiidz,”! which have come to hand since that - article was printed. Tagelus gibbus Spengler, as typically restricted, passes as far south as St. Thomas, West Indies, and probably to the northeast shores of Brazil. The variety called T. platensis by @Orbigny differs by being shorter and more attenuated behind, and I have seen it only from the southern coast of Brazil and Uruguay. Im all the typical species of Tagelus the posterior end is shorter than the anterior, the pallial sinus is deep, reaching to or forward of the perpendicular from the umbones, and the posterior adductor scar is rounded. The teeth are simple, erect, pedunculated, two in each valve. There is no central constric- tion or internal rib. Curiously enough, the shell figured by H. and A. Adams to illustrate Tagelus (or Siliquaria) gibbus is a Novaculina, while they describe the teeth as 3:2 (which is the dentition of Novacu- lina) and the sinus as deep beyond the umbones, which belongs to Tagelus and is untrue of Novaculina. Owing to the fact that a number of externally similar but really dif: ferent shells have been confused, the diagnoses of these groups are frequently inaccurate, and I have therefore reviewed the question in the light afforded by the specimens. The following are the characters: Genus NOVACULINA Benson, 1880. Type.—N. gangetica Benson. Beaks subanterior; teeth (when fully developed) three in the left and two in the right valve; the anterior left tooth often obsolete or wanting, the anterior right tooth bifid; there is no median constriction, the pal- lial sinus is small, not reaching the beaks, the posterior adductor scar rounded; the scar of the ventral side of the sinus not coalescent with the pallial line below it; situs in fresh water. Section CLUNACULUM Dall. Type.—Solecurtus mollis (Gould) Sowerby, Conch. Icon. Solecurtus, 1874, pl. VI, fig. 26; coast of Brazil and Uruguay. Valves obliquely constricted, the constriction reflected by an internal thickened elevation (not a clavicle); beaks subanterior; teeth, two in the left and two in the right valve, the posterior left tooth bifid, in some of the species there is an obsolete tooth behind it; the pallial sinus not reaching the beaks, the posterior adductor scar triangular, the scar of the sinus coalescent ventrally with the pallial line; situs marine. Genus TAGELUS Gray, 1847. Type.—Solen gibbus Spengler. Valves not constricted and without a clavicle; beaks medium or sub- posterior; teeth simple, pedunculate, two in each valve; pallial sinus ' Proc. Acad. Nat. Sci. Phila., 1898, pp. 57-62. 112 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXIL deep, reaching to or beyond the beaks, posterior adductor scar rounded, the scar of the sinus coalescent ventrally with the pallial line; situs estuarine or marine. Section MESOPLEURA Conrad, 1867. Type.—NSolen divisus Spengler. Valves arcuate, not constricted, but with a more or less perfectly developed clavicular rib extending ventrally from the submedian beaks, otherwise as in Tagelus. Gray in 1854 included species of Clunaculum under Novaculina as well as some species of true Tagelus like T. dombuji. I have not been able to examine all the described species, but Solen constrictus Lamarck, cer- tainly, and probably S. inequalis and S. complanatus Sowerby, belong to Clunaculum. TAGELUS POEYI, new species. Shell resembling a young 7. gibbus, but with more equal and evenly rounded ends, the beaks median, the teeth slender, long, but quite small, the nymphs for the ligament shorter and more central, the whole of the ventral side of the pallial sinus coalescent with the pallial line. Shell white, covered with a pale ashy gray, dehiscent epidermis; the anterior dorsal margin slightly decurrent. Length, 50 mm.; altitude, 18 mm.; diameter, 11.5 mm. Types.—No. 27425, U.S.N.M., from Cuba (Poey); also from mouth of Old River, Belize (Stanton); beach at Greytown, Nicaragua (Dall); and Rio Grande do Sul, Brazil (Ihering). This species can be instantly distinguished from 7. gibbus by the dif- ferent form of the pallial sinus and the different position of the beaks. It does not appear to attain more than half the size of the full grown T. gibbus. Specimens of 7. gibbus collected at Matagorda Bay, Texas, by Sing- ley, of a light but distinct yellow color, are in the national collection, and more recently Hon. J. D. Mitchell has sent specimens, of which he has several in his collection, of a decided pink color, from the same vicinity. Both form a decided contrast to the white or slightly ferru- ginous tint of the average specimens of this species. 4 THE OSTEOLOGY AND RELATIONSHIP OF THE PERCOI- DEAN FISH, DINOLESTES LEWINI. By EDWIN CHAPIN STARKS, Assistant Professor in the Department of Biology and Curator of the Musewm, University of Washington, Seattle, Washington. As a preliminary to this paper I will quote a paragraph from a paper by Dr. Theodore Gill, ““On the identity of Hsox lewint with the Dino- lestes miillert of Klunzinger,” published about twenty-five years ago in the Annals and Magazine of Natural History. In it he gives the following concise history of Dinolestes: In the tenth volume (‘‘the class Pisces”) of the ‘‘Animal Kingdom” of Cuvier, edited by Edward Griffith (1834), are a figure (plate 60) and a brief notice (p. 465) of a fish which has long been a puzzle to me. It is called Hsox lewini and only noticed as follows: ‘‘Our figure of Esox lewini is from a drawing by Mr. Lewin, made in New Holland, of a species not hitherto noticed.” It was evident that the species thus named belonged neither to the genus Hsox nor anywhere near it; and (1) the relations of the fins, (2) the position of the ventrals with a spine and five rays each, (3) the form of the head, and (4) the teeth indicated for it affinity to Chilodipterus and allied forms; but no first dorsal fin was represented. The question then arose whether that fin had been atrophied (as in Aspidophoroides, Gobiopus, etc.) or (as was more likely) had been overlooked. After nearly forty years the species has been recovered, and singularly enough, after having escaped the observation of the num- erous collectors in the Australian seas for so long a time,' has in the same year been obtained and described by three different naturalists under as many names, viz, Dino- lestes miilleri by Klunzinger, Neosphyrena multiradiata by Castelnau, and Lanioperca mordax by Giinther. There can be no question about at least the generic identity of the Hsox lewini with the fishes described by the three contemporaries; and it now appears that the first dorsal fin exists, but is quite small, and sustained by only four or five spines. Klunzinger and Castelnau refer the type to the family Sphyrenide, and Giinther (with more justification I think) to the ‘‘Apogonina,” i. e., Chilodip- teride. This work was undertaken at Dr. Gill’s suggestion in the hope of finding, in a comparative study of the skeleton of Dinolestes with those of the Sphyrenide and the Cheilodipteride, some characters that 'It is said, however, by Castelnau to be common [at Melbourne] in the months of May, June, and July; itattains 2 feet in length. The fishermen call it ‘‘ Ship Jack,” but that name is more particularly applied to Temnodon saltator. PROCEEDINGS U. S. NATIONAL Museum, VOL. XXII—No. 1186. Proc. N. M. vol. xxii 8 118 114 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XX. would decide the question on which the authorities disagreed, as shown in the last sentence quoted from the above paper. It would appear an easy matter to place this form under one or the other of two families arranged in different suborders, as the Sphyrzn- ide and Cheilodipteridz usually are: but the fact that two of the authorities consider it under one family and two under the other, indi- cates how close the resemblance must be to either. Sphyrena argentea is the form chosen to represent the family Sphy- renidz, while the only representative procurable of the Cheilodipter- idz was Apogon maculatus. The skeleton of Apogon was found to be of but little pasieienoe’ in this comparison. Though being undoubtedly Percoid, it differs as much from Dinolestes as they both differ from the more generalized Percoids, such as the bass or perch. Considering the difference between Dino- lestes and Apogon in external appearance, we have probably little reason to expect the internal resemblance to be otherwise. Perhaps if one of the Sphyrena-like Cheilodipteroids could be examined there would be a closer resemblance. To be sure Dinolestes differs from Apogon only in shape and compar- ative size of elements (that is, comparative between corresponding elements of each species), and not in arrangement, or lack or posses- sion of elements; but it is so very different in shape of cranium, form of body, and shape of fins that it would seem better to consider the Cheilodipteroid side of the question partly by considering the Percoid fishes more or less as a whole. Though, of course, if it is placed with the Percoids it is only under the family Cheilodipteridz, as the Per- coids are now arranged, that Dinolestes could be admitted. Were it not that the ventrals of Dinolestes are apparently thoracie, it might appear after a superficial external examination to be related to Sphyrena. The long head, projecting lower jaw, fanglike teeth, and elongate preorbital region are very Sphyrena-like. The shape of the body and dorsal fins are also suggestive of that relationship. In internal characters we find that the ethmoid is wide and flat, some- what overlying the vomer and prefrontals instead of being interposed between them. This is the condition found in Sphyrena. The nasals are very much like those of Sphyrena, being long-and channeled and attached by their sides to the ethmoid for nearly their whole length. This, however, is probably caused by the elongate snout, and goes with it as a part in keeping with the surrounding conditions. It disposes of the characters by which an alliance with Sphyrena could be proved. Though the shape of the body and head, the canine teeth, and dorsal fins exhibit perhaps a closer superficial resemblance to the Sphyranidz than to the Cheilodipteridz, there are forms to be found in the latter family which approach this Sphyrena-like appearance also. These characters therefore denote nothing in favor of either relationship. The characters of the ethmoid and nasals are the only characters pos- sessed by Sphyrena in common with Dinolestes that are not also slfared NO. 1186. RELATIONSHIP OF DINOLESTES LEWINI—STARKS. 115 in by members of the family Cheilodipteride. They are of no great importance. _ his, as has been said, is without considering the position of the ventrals. As the Percoid fishes have thoracic ventrals, and the mem- bers of the suborder Percesoces, under which the Sphyrenid is placed, have abdominal ventrals, it is difficult to see how Dinolestes could have been thought to be related to Sphyrena unless the ventrals were interpreted as being abnormally anterior abdominal ventrals. The ventrals, however, prove to be typical thoracic ventrals with the anterior point of the pelvic girdle interposed and attached between the opposing clavicles near their lower end above their symphysis. Anterior abdominal ventrals might have the point of the pelvic girdle touching the clavicles or even extending slightly under them, but never interposed between them. Another character that refutes the Sphyrzenoid relationship of Dino- lestes is the lack of the long processes developed backward from the epiotics and supraoccipital crest, which are possessed in a greater or less degree by all the Percesoces and reaches its greater development in Sphyrena. A more important difference is the structure of the teeth. Though both Dinolestes and Sphyrena have large backward-directed canines, they are entirely different in the way in which they are attached to the bone of the jaw. The calcified tooth substance of the teeth of Dinolestes reaches only to the bone, where it is anchylosed or so incor- porated with the bone as to make it difficult to distinguish the line of junction. This attachment is effected by what Tomes calls “bone of attachment.” A substance resembling cement, but unlike true cement, is developed from the periosteum rather than from the dental capsule. Such teeth may be developed from sockets, but as the calcified tooth substance 1s pushed out the cavity behind fills with the bone of attach- ment and becomes obliterated. The dentine never extends into a cavity of the bone in the mature tooth. This is a Percoid character. The teeth of Sphyrena, on the other hand, are set in sockets. The attachment of teeth in alveoli is of such rare occurrence among fishes and must be so deep seated that we can hardly interpret it as less than a family character. Mr. W. G. Ridewood, in a paper,' has this to say in regard to this class of teeth: The tooth and bone are in organic continuity by means of a periosteal layer com- mon to the tooth and the jaw; and this layer may remain uncalecified so that the teeth can be pulled out of their sockets, as in some Caracinoid fishes; or ‘‘ bone of attachment” may, except in young teeth, anchylose the tooth to the wall of the socket, e. g., Sphyrena. But whether or not the tooth becomes cemented in, the enamel and dentine extend into a cavity and do not become incorporated with the bone. ‘Natural Science, VIII, June, 1896, p. 383. 116 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XU. There is also a difference in the shape of the teeth of Sphyrena and Dinolestes. Those of the former are lancelike—that is, compressed laterally and with cutting edges. Those of the latter are round in transverse section. The vertebre of Dinolestes are typical, or in general resembling the Percoids and most bony fishes in that they are of moderate length and not much constricted in the middle. They have parapophyses devel- oped behind the fourth vertebra, two pits on the side of each vertebra separated by a longitudinal ridge, and the abdominal vertebre with a pit on the ventral side with ridges on each side of it. The vertebre of Sphyrena are long and smooth with scarcely any pits, much constricted in the middle, making them hourglass shaped, and wel only one or two pairs of parapophyses. The shape of the cranium of Dinolestes is also more typically Percoid in appearance than Sphyrenoid with the slightly rising supraoccipital crest and more wedge-shaped lateral view. A recapitulation with these points condensed will show at once the affinity of Dinolestes to the Cheilodipteride. 1. The Percoid appearing cranium. 2. The thoracic ventrals. 3. The anchylosed teeth rather than teeth in sockets. 4, The character of the vertebrae, typical; not specialized as in ~ Sphyrena. 5. The lack of the long posterior processes from the epioties. These conclusions are fortified by the following description. DINOLESTES LEWINI. Esox lewinit GRIFFITH (2), Cuvier’s Animal Kingdom, Griffith ed., X (1834), p. 465, pl. 60. Dinolestes miilleri KLUNZINGER, Archiy fiir Nat., 38. Jahrg. 1 (1872), p. 30; Hobson Bay, South Australia. Neosphyrana multiradiata CASTELNAU, Proc. Zool. and Acclim. Soe. Victoria, I (1872), p. 96; Melbourne. Lanioperca mordax GUNTHER, Ann. and Mag. Nat. Hist., 4th ser., X, (September, 1872), p. 183; Tasmania. Dinolestes lewint Grtu, Ann. and Mag. Nat. Hist., 4th ser., XIV (1874), p. 160. DIAGNOSIS. Body rather elongate; preorbital region produced; mouth large, the lower jaw projecting; canine teeth on lower jaw posteriorly and on premaxillaries at their symphysis; sharp, cardiform teeth in a single row on jaws, vomer and palatines; an inner row of villiform teeth on premaxillaries; three toothed superior pharyngeals; lower pharyngeals rather narrow, separate; gill rakers long and slender, about 4 + 13; opercles without spines or ridges; branchiostegals 7; Suesilaes wai supplemental bone; nasals elongate, attached by hele sides for nearly their whole length; parietals separated; ethmoid somewhat overlying prefrontals and vomer; posttemporal forked; postclavicle of two parts; NO. 1186. RELATIONSHIP OF DINOLESTES LEWINI—STARKS. ilelay basisphenoid with a descending process; myodome present with a | small pore to the exterior posteriorly; no suborbital shelf; vertebrie 27; parapophyses present on ail abdominal vertebre except first 3; seales cycloid; maxillaries, cheeks, opercles, and lower jaw with scales; lateral line straight, running well out on base of caudal, scales along its course systematically crowded; base of anal, soft dorsal, and caudal with small scales; anal with 2 spines and about 26 rays; dorsals remote, the first of about 5 slender spines, the second with 1 spine and about 18 rays; ventrals with 1 spine and 5 rays each; inters pinous bones not extending between vertebral spines. OSTEOLOGY. Cranium, as viewed from above, rather elongate and narrow. Inter- orbital region a flattish area with the sides nearly parallel the greater part of its length, occupying at least a third of length of cranium. Preorbital region elongate, not tapering till near end, occupying another third of length of cranium. Region surrounding foramen magnum slightly produced. Lateral view of cranium tapering rather regularly to vomer. Supraoccipital interposed between exoccipitals nearly to their poste- rior ends; its crest developed superiorly and posteriorly, scarcely extending past exoccipitals posteriorly. Exoccipitals broadly meeting above basioccipital, entirely surround- ing foramen magnum. Parietals widely separated by supraoccipital, not extending over epiotics. : Epiotices with scarcely any process. Prootics, opisthotics, sphenotics, and pterotics typical; that is, Percoid-like. . Alisphenoids widely separated. The anterior opening into brain case large. Basisphenoid present; a foramen between it and basis cranii. Canadian Nat. and Geol., III, 1858, p. 432. i i; ~ | di No. 1192. TRENTON FAUNA OF BAFFIN LAND—SCHUCHERT. ‘163 It aliens from my oes specimen, ecm is a cast “OE the exterior, in noone some- what less gibbous, particularly in the umbones, the beaks also coming closer, i.e., they are almost in contact, while they are rather widely separated and less inourtved in the type. In the absence of evidence concerning the hinge, the generic position of the shell is necessarily doubtful. Therefore, although admitting provisionally that it is closely allied to Cyrtodonta gibbera, I am not at all satisfied that it will not turn out to be a Vanuxemia near J’. abrupta. Collector.—J. N. Carpender. Cat. No. 28161, U.S.N.M VANUXEMIA ABRUPTA Ulrich. Vanuxemia abrupta ULRICH, Geol. Minn., III, Pt. 2, 1894, p. 560, pl. Xxxvin, figs. 39-44. Of this species there are two examples, which Mr. Ulrich has com- pared with the types. In Minnesota this form is found in the Middle Galena of Fillmore and Goodhue counties. Collector.—J. N. Carpender. Cat. Nos. 28157, 8, U.S.N.M. VANUXEMIA BAFFINENSIS, new species. (Plate XIII, figs. 26-28.) This species finds its nearest relatives in V. hayniana Safford and V. niota (Whitfield'). It dffiers from these species in the greater obliquity of the shell. The largest specimen figured (figs. 29 and 30) is a worn example, and is provisionally referred to V. baffinensis as a variety. When additional material is secured, it may prove to be a distinct species. (Another specimen just received from Mr. A.V. Shaw shows that the variety is probably a distinct species. ) Collector.—J. N. Carpender. Cat. No. 28160, U.S.N.M. WHITELLA ARCTICUS, new species. (Plate XIII, figs. 23-25.) Ulrich writes that this species of Whitella is nearest his W. rugatina,’ from which it differs in being much more erect. In fact, W. arcticus is more erect than any other species of the genus. The escutcheon is very narrow. Collector.—J. N. Carpender. Cat. No. 33059, U.S.N.M. Family GRAMMYSIID Hall. SAFFORDIA MODESTA Ulrich. = Saffordia modesta ULRICH, Geol. Minn., III, Pt. 2, 1894, p. 627, pl. x11, figs. 29-31. Of this form there are two specimens in the American Museum of Nat- ural History, collected by Mr. R. W. Porter. Externally they agree with the Minnesota species. 1See Geol. Minn., IIT, Pt. 2, 1894, p. 560. 2Tbidem, p. 569, pl. xt, fig. 1. 164 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. ' Class GASTROPODA. Family PROTOWARTHIID & Ulrich. PROTOWARTHIA PERVOLUTA Ulrich and Scofield. Protowarthia pervoluta ULRICH and SCOFIELD, Geol. Minn., III, Pt. 2, 1897, p. 871, pl. Lxiu, figs. 21-27. This species is fairly common at Silliman’s Fossil Mount, and in some specimens the shell is preserved. Testiferous examples of P. pervoluta are distinguished from other species of the genus by the columella-like development of the inner lip. The specimens were sent to Mr. Ulrich, who has compared them with his types. He writes that the Arctic examples are somewhat more angular on the back of the volutions than the type specimens. Collectors.—J. N. Carpender and A. H. White. Cat. No. 28173, U.S.N.M. Family BUCANIID A Ulzich. TETRANOTA OBSOLETA Ulrich and Scofield. Tetranota obsoleta ULRICH and SCOFIELD, Geol. Minn., III, Pt. 2, 1897, p. 880, pl. LXV, figs. 19-23. Of this widely distributed shell there are eight examples in the present collection. Three were sent’to Mr. Ulrich, who pronounced them typical examples of his T. obsoleta. In the United States, this shell ranges from the Lowville stage into the Utica, and is found in Minnesota, Wisconsin, Kentucky, and at Cincinnati, Ohio. Collectors.—J. N. Carpender and A. H. White. Cat. No. 28175, U.S.N.M. Three specimens collected by Mr. R. W. Porter are in the American Museum of Natural History. KOKENIA COSTALIS Ulrich and Scofield. Kokenia costalis ULRICH and SCOFIELD, Geol. Minn., III, Pt. 2, 1897, p. 882, pl. LXIV, figs. 46-49. Two specimens of this interesting species, from the Galena shales of Goodhue County, Minnesota, the type locality for this species, are in the United States National Museum. The two specimens from F[ro- bisher Bay agree with the present examples in every way excepting in the number of revolving lines. Of these there are seven in the Minne- sota specimens, while ingthe Arctic individuals there are from eleven to twelve, of which the fourth, sixth, and eighth are the most prominent. The first, second, fourth, sixth, and eighth revolving lines are continu- ous into the aperture, the others being interpolated on the last volution. Extremely fine transverse lines of growth and a few varices indicating stages of growth are also present. Collector.—J. N. Carpender. Cat. No. 28176, U,S.N.M. NO. 1192. TRENTON FAUNA OF BAFFIN LAND—SCHUCHERT. 165 Family BELLEROPHONTIID 44. BELLEROPHON SIMILIS Ulrich and Scofield. Bellerophon similis ULRICH and SCOFIELD, Geol. Minn., III, Pt. 2, 1897, p. 919, pl. LXIv, figs. 31-39. Of this species there are two examples, one of which is identical with Ulrich’s figures thirty-two and thirty-three of the work cited. It is one of the characteristic fossils of the Trenton or Galena stage of Minnesota. Collector.—A.H. White. Cat. No. 28174, U.S.N.M. Family PLEUROTOMARIID 4 @Orbigny. LOPHOSPIRA SPIRONEMA Ulrich and Scofield. Lophospira spironema ULRICH and SCOFIELD, Geol. Minn., III, Pt. 2, 1897, p. 983, pl. Lxxui, figs. 44-47. This is the most abundant gastropod found at Silliman’s Fossil Mount. The species was at. first thought by the writer to be L. /fill- morensis Ulrich and Scofield, but Mr. Ulrich, to whom three examples were sent, pronounced it L. spironema. The Arctic examples attained a far larger size than the Black River specimens of Minnesota. Collectors.—A. H. White and J. N. Carpender. Cat. No. 28177, U.S.N.M. Other specimens collected by R. W. Porter are in the Ameri- can Museum of Natural History. LIOSPIRA AMERICANA (Billings). Liospira cmericana ULRICH and SCOFIELD, Geol. Minn., III, Pt. 2, 1897, p. 996. This very widely distributed and common species is abundant at Silliman’s Fossil Mount. The large umbilicus is completely filled with Shell matter, but above in the earlier whorls it is open. Collectors.—A. H. White, A. V. Shaw, J. N. Carpender, and R. W. Porter. Cat. No. 28180, U.S.N.M. CLATHROSPIRA CONICA Ulrich and Scofield. Clathrospira conica ULRICH and SCOFIELD, Geol. Minn., III, Pt. 2, 1897, p. 1008, pl. LXx, figs. 1-4. This is one of the abundant species at Silliman’s Fossil Mount, and in the United States ranges from the Black River group into the middle of the Cincinnatian group. The Arctic examples attained a larger size than elsewhere, but otherwise are considered by Mr. Ulrich to be in harmony with his species. Collectors.—J. N. Carpender, A. V. Shaw, and A. H. White. Cat. No. 28178, U.S.N.M. The American Museum of Natural History also has specimens collected by Mr. R. W. Porter. 166 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. ; SEELYA(?) (PLETHOSPIRA?) ULRICHI, new species. (Plate XII, figs. 9, 10.) This interesting little shell has many of the characteristics of S. ventricosa Ulrich,! from the Calciferous (Beekmantown) stage. It is, however, a much smaller shell, and differs from all known species of Seelya in having the revolving bands nearly obsolete. There are four of these shells, which were sent to Mr. Ulrich for iden- tification. He writes: The specimens are casts of the interior, and the revolving peripheral furrows probably have nothing to do with the revolving sculpture of the true Seelya. Simi- lar furrows occur in good casts of Lophospira bowdeni and other Pleurotomariide. The band, I believe, was of the flat or concave type, as in Seelya, Plethospira, and Hormotoma, but, as it was evidently close to the suture and partly covered by same, it is too low on the whorls to be in strict accordance with these genera. Oollector.—A. H. White. Cat. No. 28187, U.S.N.M. The American Museum of Natural History has two specimens collected by Mr. R. W. Porter. The species is named for Mr. E. O. Ulrich, who has accomplished - much in bringing about a better understanding of the fossils of the American Lower Silurian. Family EUOMPHALID 2. HELICOTOMA (?) (LIOSPIRA?) LARVATA Salter. Helicotoma larvata BILLINGS, Canadian Organic Remains, Decade I, 1859, p. 15, pl. u, figs. 11-14. Of this species there is a single excellent specimen, which the writer at first labeled Liospira angulata Ulrich, variety. However, when Ulrich compared the Arctic example with the type species he con- cluded it to be Helicotoma larvata Salter. He has kindly made the following notes on this specimen: This species resembles Liospira mundula, L. angulata, and other species of that section of this genus very greatly, and it may be, as I once thought, truly referable to Liospira. Excepting that the Arctic specimen is small, it is the best preserved yet seen byme. Still I am unable to settle the difficulty. Whatever light it casts upon the problem is in favor of retaining the species under Helicotoma. In Canada this is a Black River species. Collector.—A. H. White. Cat. No. 28179, U.S.N.M. Family MACLURIIDA® Woodward. MACLURINA MANITOBENSIS (Whiteaves). Maclurina manitobensis ULRICH and SCOFIELD, Geol. Minn., III, Pt. 2, 1897, p. 1041, pl. LXXxv1, figs. 4,5; pl. Lxxxu, fig. 45. This species is common at Silliman’s Fossil Mount and attains a 'Geol. Minn. III, Pt. 2, 1897, p. 1009, figs. 7, b, c, d, in text. NO. 1192. - TRENTON FAUNA OF BAFFIN LAND—SCHUCHERT. 167 Manitoba, it attains a diameter of 83 inches. It is a characteristic species of the Trenton. Collectors.—J. N. Carpender, A. V. Shaw, and A. H. White. Cat. No. 28183, U.S.N.M. MACLURINA CUNEATA (Whitfield) . Maclurira cuneata ULRIcH and SCOFIELD, Geol. Minn., III, Pt. 2, 1897, p. 1042, pl. LxxvI, figs. 1-3; pl. Lxxxu, fig. 46. Of this species there are two typical specimens with the character- istic, small umbilical perforation. Collector.—J. N. Carpender. Cat. No. 28184, U.S.N.M. MACLUREA CRASSA Ulrich and Scofield. Maclurea crassa ULRICH and SCOFIELD, Geol. Minn., III, Pt. 2, 1897, p. 1040, pl. Lxxv, figs. 12-14. One example of this species measures nearly 3 inches in diameter, which is larger than the Minnesota specimens, but this is in keeping with the greater size attained by the Maclureas and Maclurinas in the far north. Collectors._J. N. Carpender and A. V. Shaw. Cat. No. 28182, U.S.N.M. Family TROCHONEMATIDZ® Ulrich. TROCHONEMA UMBILICATUM (Hall). Trochonema umbilicatum ULRICH and SCOFIELD, Geol. Minn., III, Pt. 2, 1897, p. 1047, pl. Lxxvu, figs. 1-3. Of this widely distributed Lower Silurian shell, six specimens are present. They preserve most of the shell, and show considerable sur- face detail. Collectors.—J. N. Carpender, A. V. Shaw, and A. H. White. Cat. No. 28186, U.S.N.M. Other specimens collected by Mr. Rk. W. Porter are in the American Museum of Natural History. TROCHONEMA (EUNEMA) ROBBINSI Ulrich and Scofield. Trochonema (Eunema) robbinsi ULRICH and ScoriELD, Geol. Minn., III, Pt. 2, 1897, p. 1053, pl. LXxv1, figs. 11-15. Three examples of this species are present, only one of which is well preserved. These were sent to Mr. Ulrich for comparison with T. rob- binst and T. saltert. He writes as follows: These specimens possibly indicate a form intermediate between 7. (H.) similis and T. (E.) robbinsi Ulrich and Scofield. The upper whorls of the best specimen agree rather closely with the former, while the last whorl, with its relatively narrow peripheral band, is more in accordance with the latter species. It is to be borne in mind, however, that it is only the shell-less portion of the specimen that agree with T. (£,) similis, the opposite side of the same whorls showing no trace of the ridge near the suture, which is strongly developed and is characteristic of 7. similis. 168 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XX. Collector.—J. N. Carpender. Cat. No. 28185, U.S.N.M. The best Specimen was found by Mr. R. W. Porter, and is now in the American Museum of Natural History. HOLOPEA ARCTICA, new species. (Plate XII, figs. 14-16.) This little Holopea has its nearest relation in H. ampla and H. simi- lis Ulrich and Scofield.’ It differs from the latter in having the upper sides of the whorls less flat, the sutures deeper, and the lines of growth more regular than in any other species of Holopea. From H. ampla, the Arctic species differs in having the whorls expand less rapidly. Collector.—-A. H. White. Cat. No. 28190, U.S.N.M. ? Family TROCHID 4. TROCHUS (?), species undetermined. (Plate XII, figs. 11-13.) Of this form there is only one good specimen, and this has none of the ornamental surface preserved. The specimen was sent to Mr. Ulrich, and he kindly made the following notes: I regard it as related to some of the Gotland shells referred to Trochus by Lind- strém, but as the specimen retains no trace of the sculpture-bearing layer of the shell it can not be compared satisfactorily with described species. Lindstrém’s 7. den- sistriatus, T. kolmodini, and T. wisbyensis seem not far removed. The specimen is in the American Museum of Natural History. Family SUBULITID A. FUSISPIRA INFLATA Meek and Worthen. Fusispira inflata ULRICH and SCOFIELD, Geol. Minn., III, Pt. 2, 1897, p. 1075, pl. Lxxx, figs. 17, 18. The only example of this species is an imperfect shell with most of the smaller part of the spire missing. So far as comparison can be made, the species is in harmony with F. inflata. Mr. Ulrich agrees that the specimen belongs to this species. Collector.—J. N. Carpender. Cat. No. 28189, U.S.N.M. FUSISPIRA NOBILIS Ulrich and Scofield. Fusispira nobilis ULRICH and SCOFIELD, Geol. Minn., III, Pt. 2, 1897, p. 1078, pl. Lxxx, figs. 2-4. The two Arctic specimens of this form are imperfect, and the largest fragment indicates that the species here attained as large a growth as in Minnesota, being about 4 inches in length. Mr. Ulrich has seen the faemicnrs and agrees that hey, OOS his SUeBIes: 1Geol. Minn., III, Pt. 2, 1897, pp. 1065, 1066. No. 1192. TRENTON FAUNA OF BAFFIN LAND—SCHUCHERT. 169 Class CHPHALOPODA. Order TETRABRANCHIATA. Family ENDOCERATID@. CAMEROCERAS PROTEIFORME (Hall). Cameroceras proteiforme CLARKE, Geol. Minn., III, Pt. 2, 1897, p. 777, pls. XLVIII-ULI, LIII. Of this common species there is one small but well-preserved frag- ment showing the submarginal siphon. In a length of 2 inches, there are seven chambers and eight septa. Collector.—J. N. Carpender. Cat. No. 28191, U.S.N.M. Family ORTHOCERATID 4. ORTHOCERAS OLORUS Hall, var. BAFFINENSIS, new variety. (Plate XII, figs. 19-22.) Orthoceras vertebrale HaLu, Pal. N. Y., I, 1847, p. 201, pl. xxi, figs. 5-5e (not Schlotheim, 1820). Orthoceras olorus HALL, Miller’s Amer. Pal. Foss., Ist ed., 1877, p. 245. The Arctic examples of this form, of which there are three, do not appear to attain the large size of the New York specimens. Hall describes the species with ‘“‘strong longitudinal striz,” while the Arctic Specimens have very fine equidistant lines, between each of which are from 3 to 6 exceedingly delicate ones. This difference in the ornamen- tation, together with the smaller size, is regarded of sufficient impor- tance for varietal distinction. There isno other American Lower Silurian annulated species with which it can be compared. Collectors.—J. N. Carpender and A. H. White. Cat. No. 28192, U.S.N.M. ORTHOCERAS BILINEATUM Hall. Orthoceras bilineatum CLARKE, Geol. Minn., III, Pt. 2, 1897, p. 786, pl. xLvit, figs. 20, 21; pl. LIV, figs. 6, 7. Of this species there is one small specimen annulated throughout. The characteristic, regularly alternating, larger and smaller lines of ornamentation are preserved. Collector.—A. H. White. Cat. No. 28193, U.S.N.M. ORTHOCERAS PORTERI, new species. (Plate XII, figs. 23-25.) This annulated species of Orthoceras appears to be related to O. bilin- eatum. The apical angle in both is about the same, but in O. porteri the annulations and septa are farther apart, the siphuncle is more eccentric, and the ornamentation is entirely different. The longitudinal lines are double throughout, and consist of prominent primary ones, 170 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. between which there are always three equally strong secondary lines. Transverse, or growth, lines are fine and numerous, and in crossing the longitudinal lines they cause these to be slightly nodose. Collector.—J. N. Carpender. Cat. No. 28194, U.S.N.M. This name is given aS a mark of appreciation to Mr. Russell W. Porter, of Boston, Massachusetts, who, with his associates, made it pos- sible to revisit Frobisher Bay and to make a most complete collection of Arctic Trenton fossils.' ORTHOCERAS SCALARIFORMIS, new species. (Plate XII, figs. 17, 18.) Shellsmall, notannulated, tapering slowly, withan apical angleofabout 7°, section originally circular, septa 9 in the length of 1 inch; siphuncle large, and apparently in contact with the outer wall. Surface with 13 widely separated prominent longitudinal costz, which are crossed somewhat irregularly by concentric lamelle, anteriorly directed, and 1 to each septum. Here and there two or three intermediate vertical lines occur between the longitudinal costa. Collector.cJ. N. Carpender. Cat. No. 28195, U.S.N.M. Family CYRTOCERATIDA. CYRTOCERAS MANITOBENSE Whiteaves. Cyrtoceras manitobense WHITEAVES, Trans. Royal Soc. of Canada, Sec. 4, VII, 1889, p. 80, pl. xu, figs. 3, 4; pl. xv, fig. 4; Geol. Surv., Canada, Pal. Foss., III, 1897, p. 223. Oncoceras manitobense CLARKE, Geol. Minn., III, Pt. 2, 1897, p. 799. This species is the most abundant of the Cephalopoda at Silliman’s Fossil Mount. The writer sent the specimens to Profe~sor Whiteaves, who compared them with the types, and subsequently reported that they are ‘“‘apparently exactly the same species as C. manitobense Whiteaves from Lake Winnepeg, Manitoba. We have very similar specimens from Akpatok Island, Hudson Strait.” The Baffin Land specimens are smaller than those from Manitoba. Collectors.—J. N. Carpender, A. V. Shaw, and A. H. White. Cat. No. 28119, U.S.N.M. CYRTOCERAS CORNULUM, new species. (Plate XIV, figs. 8-10.) This little shell is clearly related to the previous species, having many of its characters. It differs, however, in its smaller growth, greater cenrvature, and most decidedly in the very rapid increase of the cone. The greater curvature is due to the rapid increase in depth of the air chamber toward the ventral side, where near the living chamber it is 1A description of this trip is given by Mr. Porter in Bull. Amer. Geog. Soc., XXX, May, 1898, pp. 97-110, the paper being entitled ‘‘ Frobisher Bay Revisited.” + Se ee NO. 1192. TRENTON FAUNA OF BAFFIN LAND—SCHUCHERT. IO often three times the depth on the dorsal side. The siphuncle is very small, almost in contact with the ventral wall, and swells but little between the septa. Professor Whiteaves, who saw the type, states that among the frag- ments of Cyrtoceras from Manitoba “are some apparently like (@. cor- nulum in section, curvature, and much in the position of siphuncle.” Collectors.—A. V. Shaw and A. H. White. Cat. No. 28121, U.S.N.M. CYRTOCERAS BAFFINENSIS, new species. (Plate XIV, figs. 11-13.) This small species of Cyrtoceras has the general aspect of C. manito- bense, and for a time was regarded as the young of that species, yet a comparison shows that C. baffinensis has a somewhat smaller apical angle. The diagnostic feature, however, is in the depth of the air chambers. These are much more shallow and do not increase in depth with growth nearly as rapidly as in C. manitobense, there being twenty- two of these in 25 mm., while in the latter species at a similar stage of growth there are about sixteen. Collector.—A. H. White. Cat. No. 28198, U.S.N.M. Family ONCOCERATID 4. CLINOCERAS EXIGUUM (Billings). Cyrtoceras exiguum BILLINGS, Can. Nat. and Geol., V, 1860, p. 172, figs. 17, 18. Oncoceras exiguum CLARKE, Geol. Minn., III, Pt. 2, 1897, p. 798, pl. Lvim, figs. 10, 11. In this collection there are five specimens of this species, three of which preserve more or less of the body chamber, and permit a recon- struction of the form of the shell. The body chamber was not less than 15 mm. in length and the entire shell not less than 58 mm. Billings gives the probable length as about 50 mm., which is very close to the protrae- tion based on Arctic material. Clarke writes that the Minnesota speci- mens probably did not exceed 30 mm., but as his specimens are very small fragments, this estimate is probably short of the actual length. The first twelve septa back of the living chamber occupy 22 mm., and in another specimen there are nine in 19 mm. The depth of the air chambers decreases very little toward the apex, the average being a little less than 2 mm. down to where the shell has a diameter of 3.5 mm. Specimens from shale are usually compressed, and this is the condi- tion of the Arctic material, but the shell was circular in outline, with a very small central siphuncle. This species is related to Oncoceras mumieformis Whitfield, which Clarke referred to Clinoceras. The Arctic material shows the shell to be gently arcuate and to possess the other generic characters of Clino- ceras. Billings’s species should be referred to Maschke’s genus. ~* Collectors.—J. N. Carpender and A. H. White. Cat. No. 28199, U.S.N.M. 172 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. ' " ONCOCERAS ARCTICUM, new species. (Plate XIV, figs. 4-7.) As shown by the figures, this species differs from all other American Oncoceras in the great antero-posterior curvature of the ventral side of the shell. This is caused by the rapidly increasing depth of the air chambers toward the ventral side, where they are about twice the depth of the dorsum. Siphuncle small, slightly constricted at each septum, and closely adjoining the ventral wall except immediately beneath the living chamber, where it is slightly deflected dorsally. Venter more broadly rounded than the dorsum. Living chamber large, with the sides slightly constricted, not less than 24 mm. deep, 33 mm. dorso-ventrally, and 24 mm. transversely. The cast is smooth and pre- serves no markings of the exterior. Cyrtoceras cornulum was first thought to be the young stage of Oncoceras arcticum, but its section is more elongate-oval, with the dorsal side more rounded, the reverse being true in the latter species. The chambers also are deeper on the ventral side, the ventral curvature is less strong, and the shell thicker, with longitudinal plications. Collector.—J. N. Carpender. Cat. No. 28196, U.S.N.M. ONCOCERAS TUMIDUM, new species. (Plate XIV, figs. 1-3.) This species is much larger than any other in the Trenton of the United States, although much smaller than O. magnum, the giant of the genus, which is found at East Selkirk, in Manitoba. The present form seems to be most closely related to O. gibbosum Whiteaves! (=0. whiteavesi Miller), but has not the numuloidal siphuncle of that species, nor the sigmoid outline of the septa on the dorsum. The living chamber, also, is shallower, being about 28 mm. deep. The con- striction of O. tumidum recalls that seen in Poterioceras or Gomphoceras, but unlike these shells is not bilaterally symmetrical. The specimen preserves but 6 septa and the living chamber, and throughout all there is a rapid regular convergence toward the anterior end. Dorsal end of shell broadly rounded, with the ventral side somewhat acutely rounded. The 5 air chambers are dorsally 13 mm. deep and ventrally 25 mm. The siphuncle is small and situated about 6 mm. inside the ventral wall. Septa regularly but deeply concave. The type specimen was sent to Professor Whiteaves for comparison with O. whiteavest Miller. He reports that Oncoceras tumidum is “very much like O. whiteavesi Miller (=O. gibbosum Whiteaves, not Hall) in lateral contour, but in your specimen the body chamber does not seem to narrow so abruptly as it always does in O. whiteavesi, and shows no sign of any constriction at the aperture.” Collector.—J. N. Carpender. Cat. No. 28190, U.S.N.M. ‘Trans. Royal Soc. Canada, Sec. 4, IV, 1889, p. 80, pl. xv, fig. 43. v S eG meat et. + ie PEP he a § So aReeee R egw py Wars ee Stes BAS No. 1192. TRENTON FAUNA OF BAFFIN LAND—SCHUCHERT. is POTERIOCERAS, species undetermined. There is a poor specimen of this genus from the Frobisher Bay locality. It was thought to be a small specimen of P. nobile, and was therefore sent to Professor Whiteaves'! for comparison. He, however, writes: We have nothing exactly like this. It is very similar in shape to P. nobile, except that the latter is somewhat compressed and yours is not. The difference in size between your specimen and ours is, of course, enormous. Your shell also is not very unlike the so-called Gomphoceras eximium Billings, but that species is ovate in trans- verse section, possibly from lateral pressure. Your specimen is, I should think, most likely a Poterioceras, but too imperfect to show its specific characters or affinities. Collector.—J. N. Carpender. Cat. No. 28122, U.S.N.M. Family TARPHYCERATID Hyatt. EURYSTOMITES PLICATUS Whiteaves ? Eurystomites plicatus WHITEAVES, Can. Rec. Sci., VI, 1896, p. 395; Geol. Surv. Canada, Pal. Foss., III, Pt. 3, 1897, p. 225, figs. 15, 16; pl. xxvu, fig. 2. The only specimen of this species present is not well preserved, but has parts of one and one-half whorls. Professor Whiteaves, who saw the specimen, writes that it is ‘“‘probably Hurystomites plicatus White- aves. At any rate, it has the same outline in transverse section, with the dorsum impressed by a shallow and rather narrow furrow of contact, and the same amount of involution.” The specimen, however, shows no surface markings nor any siphuncle. Collector.—J. N. Carpender. Cat. No. 28123, U.S.N.M. Class AR'THROPODA. Subclass CRUSTACEA. Order OSTRACODA. Ostracoda are abundant at Silliman’s Fossil Mount, 10 specimens having been found attached to the larger fossils. These were sent to Mr. K. O. Ulrich for determination. He has identified them as follows: Bythocypris grant Ulrich.’ Primitia or Kledenia. Krausella, two new species. Order TRILOBIFA. NILEUS VIGILANS (Meek and Worthen). Nileus vigilans CLARKE, Geol. Minn., III, Pt. 2, 1894, p. 712, figs. 17-19. Of this widely distributed species there is one very fine enrolled but small specimen and fragments of three other individuals. These agree exactly with Mr. Clarke’s description and figures. 'Trans. Royal Soc. Canada, Sec. 4, VII, 1889, p. 77, pl. x1v, fig. 1, ? Geol. Minn., III, Pt. 2, 1894, p. 689, pl. xiv, figs. 39-42, 174 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Collectors.—J. N. Carpender, A. V. Shaw. and A. H. White. Cat. No. 28168, U.S.N.M. The American Museum of Natural History has two specimens collected by Mr. hk. W. Porter. ILLAZZENUS CRASSICAUDA AMERICANUS (Billings). Tllenus americanus CLARKE, Geol. Minn., III, Pt. 2, 1894, p. 714, figs. 20-23. One fine enrolled specimen of this well-known species was found by Mr. F. G. Goodridge, of New York City, and was very kindly given to the U.S. National Museum. Mr. R. W. Porter also collected two fine specimens, which are now in the American Museum of Natural History. These agree excellently with this species, the best examples of which are from oa Falls, New York. Vollectors.— I. G. Coniniles, J. N.Carpender, A. V. Shaw, and A. H. White. Cat. a 28167, U.S.N.M. ISOTELUS GIGAS De Kay. Tsotelus gigas CLARKE, Geol. Minn., III, Pt. 2, 1894, pp. 701-706, with text figures. Of this species several fragments were found by J. N. Carpender and A. V. Shaw. : DALMANITES (PTERYGOMETOPUS) GOODRIDGII, new species. (Plate XII, figs. 5, 6.) The cephalon of this species recalls that of D.(P.)eboraceus Clarke in the characters of the glabella and in the great prominence of the eyes. However, in D.(P.) goodridgii, the eyes are even more elevated, the cephalon is smooth and devoid of all granulation, while the most marked difference is seen in the posterior outline of the head, which is broadly rounded or subquadrate, with a centrai, short projection. The occipital ring is also much wider, and is strongly elevated medio- posteriorly into an obtuse apex. Of thoracic segments, nine are pre- served in these specimens. The pygidium is likewise less triangular than in D.(P.)eboraceus, and while there are ten or eleven annulations on the axis, there are not more than five pleure. These are well developed anteriorly, becoming rapidly more and more obsolete. Named for Mr. F. G. Goodridge, of New York City, one of the col- _lectors cf fossils on the Peary expedition of 1897. ‘ Collectors.—J. N. Carpender and A. H.White. Cat. No. 28170,U.S.N.M. CERAURUS PLEUREXANTHEMUS Green. Ceraurus pleurexanthemus GREEN, Pal. N. Y., I, 1847, p. ae pl. LXV, figs. la-1n; pl. Lxvi, figs. 1, le-1h.—CLARKE, Geol. sities III, bt. 2, 1894, p. 734. There are three examples of this species in the collection, none of which are entire, but all agree well with New York specimens. The species did not here attain quite the large size of New York specimens, but one glabella shows a growth about two-thirds of the largest from the latter locality. Collector.—A. H. White. Cat. No. 28169, U.S.N.M. No. 1192. TRENTON FAUNA: OF BAFFIN LAND—SCHUCHERT. 175 SUMMARY. The only Lower Silurian horizons known in northeastern Arctic America are of Trenton and Utica age. The latter zone appears only on the north shore of Frobisher Bay, but the Trenton is found in various places from the north shore of Hudson Strait to latitude 81° north. The Lower Silurian is thickest on Akpatok Island, where it is from 400 to 500 feet in depth. Dr. Bell, however, estimates the entire thickness of these strata in this region to be not less than 900 feet. In Baffin Land, and apparently elsewhere in Arctic America, the Lower Silurian strata rests unconformably on old erystalline rocks. To the north of Baffin Land, the former are overlain by beds of Niag- ara or Wenlock age. The Trenton faunas, occurring in various places around the insular Archean nucleus of North America, have much in common, and this indicates that the conditions at that time were very similar, while the sea was in communication throughout. As yet, however, the distri- bution of the strata, together with their faunas, are well known only to the south and southeast of the Archean nucleus, yet that of the west (Manitoba) and of the northeast (Baffin Land) show direct com- munication. The Baffin Land ane had an early introduction of Upper Silurian genera in the corals Halysites, Lyellia, and Plasmopora. Ii Manitoba similar conditions occur in the presence of Halysites, Favosites, and Diphyphyllum. Other Upper Silurian types do not appear to be present. The Trenton fauna of Silliman’s Fossil Mount, at the head of Fro- bisher Bay, has seventy-two species, of which twenty-eight are restricted to it. This fauna shows an intimate relationship with that of the Galena of Minnesota, Iowa, and Wisconsin. Tifty-seven per cent of the species of Baffin Land also occur in the Galena of the regions just mentioned. The Trenton fauna of Baffin Land shows that the corals, brachiopods, gastropods, and trilobites have wide distribution, and are therefore less sensitive to differing habitats apt to occur in widely separated regions. On the other hand, the cephalopods, and particularly the pelecy pods, indicate a shorter geographical range. The almost complete absence of Bryozoa in the Baffin Land Trenton contrasts strongly with the great development of these animals in Minnesota and elsewhere in the United States. 176 PROCEEDINGS OF THE NATIONAL MUSEUM. EXPLANATION OF PLATES. [From drawings by Mr. E. O. ULRICH.] PLATE XII. Porocrinus shawi, p. 155. . Posterior view of the calyx; enlarged. . Anterior view; natural size. . Ventral view; enlarged. gw doe Dalmanites (Pterygometopus) goodridgti, p. 174. 4. The pygidium supposed to be of this species. 5,6. Two views of the cephalon. Orthis (Dinorthis) meedsi arctica, p. 157. 7,8. Dorsal and profile views. Seelya (?) (Plethospira ?) ulrichi, p. 166. 9,10. Two views showing the nearly obsolete revolving bands. Trochis ?, species undetermined, p. 168. 11-13. Three views of the only specimen of this genus. Holopea arctica, p. 168. 14,15. Two views of the best specimen. 16. Surface ornamentation; X5. Orthoceras scalariformis, p. 170. 17. The ornamentation. 18. Sectional view, with the position of the sipho. Orthoceras olorus baffinensis, p. 169. 19, 21,22. Views of three specimens. 20. Surface ornamentation; x10, Orthoceras porteri, p. 169. 23. View of the exterior. 94. Surface ornamentation; X5. 25. Sectional view, with the position of the sipho. PLATE XIII. Ctenodonta carpenderi, p. 160. Fics. 1-3. Three views of the largest specimen. Ctenodonta subnasuta Ulrich?, p. 160. 4-6. Three views of the best specimen. lenodonta baffinensis, p. 161. 7-9. Three views of the type specimen. 10. Surface ornamentation; x10. Ctenodonta frobisherensis, p. 161. 11-13. Three views of the best specimen. 14. Left valve of another specimen. Whiteavesia symmetricus, p. 162. 15-17, Three views of the type specimen. VOL. XXII. NO. 1192. TRENTON FAUNA OF BAFFIN LAND—SCHUCHERT. 177 Modiolodon arcticus, p. 161. _ 18,19. Views of the cast of the interior. | Allodesma (?) species undetermined. 20-22. Three views of the only specimen. This species is for the present not described. Whitella arcticus, p. 163. 23-25. Three views of the type specimen. Vanuxemia bafinensis, p. 163. 26-28. Three views of the type specimen. 29, 30. Two views of a large specimen which probably is a distinct form. Cyrtodonta sillimanensis, p. 162. 31-33. Views of the type specimens, Cyrtodonta (?) gibbera Ulrich, var., p. 162. 34-36. View of the only example. PLATE XIV. Oncoceras tumidum, p. 172. Fig. 1. Ventral side. 2. Side view. 3. Sectional view of the larger end. - Oncoceras arcticum, p. 172. . View of the dorsum. . Side view. . Sectional view, with the position of the sipho. . Ventral side. ID owe Cyrtoceras cornulum, p. 170. . Side view, showing the radiating furrows of the inner side of the shell. . Ventral view. 10. Outline of the shell transversely. co CO Cyrtoceras baffinensis, p. 171. 11. Side view. 12. Ventral view. 13. End view with about half the length of the shell drawn in. Proc. N. M. vol. xxii 12 PL. Xil PROCEEDINGS, VOL. XxXIl U. S. NATIONAL MUSEUM S MOUNT. y FOSSILS FROM SILLIMAN FOR EXPLANATION OF PLATE SEE PAGE 176. | U. S. NATIONAL MUSEUM PROCEEDINGS, VOL. XXII PL. XIII PELECYPODS FROM SILLIMAN’S MOUNT. FOR EXPLANATION OF PLATE SEE PAGES 176, 177. U. S. NATIONAL MUSEUM PROCEEDINGS, VOL. XXII PL. XIV CEPHALOPODS FROM SILLIMAN’S MOUNT. FOR EXPLANATION OF PLATE SEE PAGE 177. oe ~ i Aba tpt Sheen cet Sito Seu SOME NEOCENE CORALS OF THE UNITED STATES. By HENRY STEWART GANE, Ph. D., Fellow in Geology, Johns Hopkins University, 1894-95. INTRODUCTION. At the suggestion of Prof. William B. Clark, of the Johns Hopkins University, the writer was encouraged to undertake the study and sys- tematic description of the Neocene corals of the United States. Further- more, the present paper has been constructed both as to method of treatment and arrangement of subject-matter upon the general plan of Professor Clark’s bulletin on the Mesozoic Echinodermata of this country. No attempt had been made hitherto to treat this subject from the present standpoint, the few corals previously described being offered to science either as possessing only zoological interest, or else to complete a local fauna. : The first mention of a Neocene coral from this country is found in the Petrefacta Germaniz of Goldfuss (1829), where Madrepora palmata is both described and figured. During the thirty years following this first description there were at irregular intervals a number of scat- tered contributions to the subject. The more important were those of T. A. Conrad, W. Lonsdale from the collections made by Sir Charles Lyell, and Milne-Edwards and Jules Haime. More recently there have been but two papers worthy of notice, one in 1887 by Prof. P. M. Dunean on the genus Septastrwa d’Orbigny, from the Miocene of Maryland, and one in 1888 by Dr. G. J. Hinde as a criticism of Pro- fessor Duncan’s article. It is of interest to note that the researches of Dr. Hinde on this American species are almost unprecedented, no sim- ilar coral having been treated in so exhaustive a manner. In consid- ering all the referetices we notice the somewhat remarkable fact that by far the most important writings have appeared both in foreign journals and from the pens of foreign paleontologists. The material treated has been loaned to the writer from the col- lections of the U. S. National Museum, Wagner Free Institute of PPOCEEDINGS OF U. S. NATIONAL MUSEUM, VOL. XXII—No. 1193. “te ( 180 PROCEEDINGS OF THE NATIONAL MUSEUM, ~ VOL, XXII. Science, the Philadelphia Academy of Sciences, the private cabinet of Mr. Joseph Willcox, of Philadelphia, and the Johns Hopkins University. The state of preservation of the forms is as a rule excellent, with the exception of the silicified corals from Florida. These latter are often very difficult of determination, owing to prefossil wear and the minera- logical change the specimens have since undergone. Frequently the poorly preserved calices alone remain, the entire inside of the individ- ual or the colony being dissolved away and represented by a cavity with walls of botryoidal character. When the original substance of the coral, with the exception of the outer surface, is thus replaced, it becomes impossible, as an aid to identification, to cut sections showing the coral structure below the calice. The cause and method of silification of these corals has never been satisfactorily proven. Professor Heilprin,! in discussing the phenomena in his treatise on the Explorations on the West Coast of Florida, attributes the change to an infiltration of silica in a heated condition, but adds that he can not even hazard a guess, much less explain in what precise manner the peculiar method of hollowing was brought about. Especially is this true of the colonial types with botryoidal-shaped cavities. Furthermore, in the genera possessed of very small calices, as in Porites and Stylophora, their deli- cate structure is often so destroyed as to render a specific diagnosis impossible. The writer has also been at a great disadvantage from the fact that a number of the species have been described from single specimens, and until further collecting is done in the field it will be impossible to give a more detailed specific description of these forms. The fauna under discussion embraces in its geological distribution, the Neocene and Oligocene epochs. On the other hand, geographically the range of these forms is remarkably confined. With the single excep- tion of a few casts from the Miocene of Griswoldville, Fresno County, California, we find them limited to the Atlantic seaboard States, from New Jersey to Florida, inclusive. In considering this fauna as a unit, its most striking feature is the great number and variety of the genera represented as compared with the species, there being twenty-eight of the former to thirty-five of the latter. This proportion of genera to species is quite unusual, the number of species in any given fauna more often being far in excess of the genera. As an instance, we may cite the present fauna of Bermuda, with its twenty-eight species to only ten genera, or the results reported by the Challenger, which during its entire cruise obtained only sixty-nine genera of reef corals to two hundred and ninety-three species, and many of these presenting considerable varia- ation. We find, further, in taking account of the Neocene corals, that the colonial far outnumbers the individual type. In examining the bathymetric distribution of the species, it is doubt- 1Trans. Wagner Free Inst. Sci., I, p. 62. NO. 1193. SOME NEOCENE CORALS—GANE. 181 ful whether any truly deep-sea forms are » represented. The few genera that might be so classed are also frequently found living in shallow depths. When we add to the above the fact that they occur in the deposits side by side with true reef builders, we may consider that the corals living in the Oligocene and Pliocene periods flourished as shallow- water forms with preponderating reef-building tendencies. Both from their kind and the relations which the coral genera and species of a particular area bear to one another, it is possible to judge of the similarity or of the variation of the physical conditions prevail- ing in the region. Regarding this hypothesis, Prof. P. M. Dunean,! in ine first: article on the West Indian fossil corals, says: The range, in strata, of the genera of corals is often so great, and the species of remote formations are so frequently closely allied; that the Zoantharia form better guides for estimating the external physical circumstances of the regions in which they existed than for determining the age of the strata. There are few subjects better understood than the relation between the presence of certain genera and species of coral and certain definite, external physical conditions. Depth of sea, purity of sea water, its intense aeration, force of wave, absence of fresh water, the climate and nature of the coast line, with all their possible varieties, appear to determine, according to their mutual reactions, the presence and persistence of spe- cies and genera. Indeed, very slight variations from the general rule of the external circumstances in a coral sea would appear to prevent the development of certain genera. It is a reasonable induction that, if a species be found in strata of any age and distant in space, the two sets of strata were formed under the same external physical circumstances. If this be true, then the conditions prevailing upon the Atlantic coast during Neocene time were most varied, both from a geological and a geographical standpoint; for we find that in the fauna under dis- cussion the genera of the corals are quite varied, and that the indi- vidual species are very limited, both vertically and horizontally, in their stratigraphic distribution. In this distribution the Pliocene species are perhaps more liable to be limited in their geographical range than in their geological, since a number of the forms are either found as recent or having closely related living allies, whereas the Miocene _ Species appear to be about equally confined both from a geographical and a geological aspect. A majority of the corals represented belong to extinct species. A few are now found living in the Caribbean Sea, and some belong to closely allied fossil forms from Santo Domingo and other West Indian islands. We should expect that the Neocene corel of the United States would have close kinship with those of like age in the West Indies, but such does not seem to be generally the case. On the other hand, according to Professor Duncan the fossil Oligocene corals of the West Indies are closely related to those of the Miocene of Europe ai.d the recent faunas of the Pacific and Indian oceans. Regarding the affinities of. the Neo- 1Quart. Jour Geol. Soc., XIX, p. 453. 182 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. cene fauna of the United States as a whole, we come to the conclusion that it has more of a likeness to that at present living in the Caribbean Sea and Atlantic Ocean than to the fauna, recent or fossil, of any other region. f The descriptions of families and genera will not be repeated in the present work, as they are to be found in the paper of Prof. P. Martin Dunean on “A Revision of the Families and Genera of the Scleroder- mic Zoantharia, Hdwards and Haime, or Madreporaria (M. rugosa excepted),” which also contains the system of classification employed in the present memoir. The author wishes to express his thanks, through Mr. William H. Dall and Mr. Joseph Willcox, to the Wagner Free Institute of Science tor the loan of many of the specimens herein described; also to Mr. T. Wayland Vaughan for much kindly assistance and advice. Mr. Vaughan has looked over the paper after it was written and has attended to having the figures drawn. BIBLIOGRAPHY. 1826-1833. GoLpruss, A. Petrefacta Germanic. 1834. EHRENBERG, C.G. Beitriige zur physiologischen Kenntniss der Corallenthiere im Allgemeinen, und besonders des rothen Meeres, nebst einem Versuch zur physiologischen Systematik derselben. Abhand. Akad, Wiss. Berlin, pp. 225-380. 1834. DE BLAINVLLE, H. M. D. Manuel d’actinologie ou de zoophytologie. 1835. ConraD, T, A. Observations on a portion of the Atlantic Tertiary region. Trans. Geol. Soc. Penn., I, Pt. 2, pp. 335-341, pl. x11. 1836. Dr Lamarck,J.B.P.A. Histoire naturelledes animaux sans vertebres. 2ded. II, Histoire des Polypes. With notes by G. P. Deshayes and H. Milne- Edwards. =a 1837. Rogers, W. B. and H. D. Contributions to the geology of the Tertiary Formations of Virginia. Trans. Am. Phil. Soc., new ser., V, p. 319. 1841. Conrapb, T. A. Descriptions of twenty-six new species of fossil shells discov- ered in the Medial Tertiary deposit of Calvert Cliffs, Maryland. Proce. Acad. Nat. Sci. Philadelphia, I, pp. 28-33. 1842. ConrapD, T. A. Descriptions of twenty-four new species of fossil shells, chiefly from the Tertiary deposits of Calvert Cliffs, Maryland. Jour. Acad. Nat. Sci. Philadelphia, 1st ser., VIII, pp. 183-190. 1845. LYELL, C. On the Miocene Tertiary strata of Maryland, Virginia, and of North and South Carolina. Quart. Jour. Geol. Soc. London, I, pp. 413-429. LONSDALE, W. Account of ten species of Polyparia obtained from the Miocene Tertiary formations of North America. Quart. Jour. Geol. Soc. London, I, pp. 495-509, 10 wood-cuts. 1846. CONRAD, T. A. Observations on the Eocene formation of the United States, with description of species of shells, etc., occurring in it. [At end of article see] Note; being remarks on Lonsdale’s species. Am. Jour. Sci., 2d ser., I, pp. 209-221. Dana, J.D. Remarks on Corals (appendix to an article on Eocene fossils of United States, by T. A.Conrad). Am. Jour. Sci., 2d ser., 1, pp. 220, 221 Dana, J.D. U.S. Exploring Expedition. Zoophytes. 1847. LONSDALE, W. Remarks on the Character of several Species of Tertiary Cor- als from the United States, in reply to Mr. Dana. (Extracted from a letter from W. Lonsdale to C. Lyell, esy.) Am. Jour. Sei., 2d ser., IV, p. 357. No.1193. | SOME NEOCENE CORALS—GANE. 183 1847. Dana, J.D. Observations in reply to Mr. Lonsdale’s Remarks. Am. Jour. Sci., 2d ser., IV, pp. 359-362. 1818. TuomEy, M. Report on the Geology of South Carolina. Bronn, H.G. Index Paleontologicus. 1849. D’ORBIGNY, A. Note sur les Polypiers fossiles. MILNE-EDWARDS, H., and JuLES Haimr. Recherches sur les Polypiers. Ann. des Sci. Nat., 3d ser., XLI, pp. 95-197. MILNE-EDWwarbs, H., and JULES Haime. Mémoire sur les Polypiers apparte- nants & la famille des Oculindes, an groupe intermédiaire des Pseudastréides et a la famille des Fongides. Comptes Rendus, XXIX, pp. 67-73. 1850. MILNE-EDwarps, H., and JULES HAIiME. Recherches sur les Polypiers. Ann. des Sci. Nat., 3d ser., XIII, pp. 63-110. MILNE-Epwarbs, H.,.and JuLES HaimeE. British Fossil Corals, Paleonto- graphical Society. 1851. MILNE-EDWarbDs, H., and JULES HAIME. Monographie des Polypiers Fossils des Terrains Palzeozoiques, precedée d’un_ Tableau General de la Classifica- tion des Polypes. Archiv. Mus. Hist. Nat., V. 1850-1852. D’OrBIGNy, A. Prodrome de Paleontologie stratigraphique universelle des Animaux Mollusques et Rayonnés. 1853-1856. BRoNN, H. G. Lethea Geognostica. TuOMEY, M., and Hotmgs, F. 8S. Plieocene Fossils of South Carolina. 1857. MILNE-EDWARDS, H., and JULES HAIME. Histoire Naturelle des Coralliaires. 1858. Emmons, E. Report on North Carolina Geological Survey, Agriculture of the Eastern Counties, and Description of Fossils of the Marl Beds. 1860. HOLMES, F.S. Post Pliocene Fossils of South Carolina. 1861. FROMENTEL, E. D. Introduction a l’etude des polypiers fossiles. 1864. Meek, F. B. Check List of Invertebrate Fossils of North American Miocene. 1868. VERRILL,A. E. Review of the Corals and Polypsof the West Coast of America. Trans. Conn. Ac. Art. Sci., I, Pt. 2, p. 377. 1884. RocErS, W. B. and H. D. Contributions to the Geology of the Tertiary For- mations of Virginia in a ‘Reprint of Annual Reports and other papers on the Geology of the Virginias.” New York. 1886. DuNcAN, P. M. (Abstract of paper) On a new Genus of Madreporaria Glyphastrea, with remarks on the Glyphastrea Forbesi, Edwards and Haime, sp. from the Tertiaries of Maryland, U.S. Abstract Proc. Geol. Soc. London, No. 495. 1887. DuNcAN, P. M. On anew Genus of Madreporaria-Glyphastrea, with remarks on the Glyphastra Forbesi, Edwards and Haime, sp. from the Tertiaries of Maryland, U. 8. Quart. Jour. Geol. Soc. London, XLIII, p. 24, pl. 1. _ 1887. HEILpRIN, A. The Miocene Mollusca of the State of New Jersey. Proc. Acad. Nat. Sci. Philadelphia, XXXIX, pp. 397-405. 1888. HINDE, G. J. On the History and Characters of the Genus Septastrexa, D’Orbigny (1849), and the Identity ot its Type Species with that of Glyphas- trea, Duncan (1887). Quart. Jour. Geol. Soc. London, XLIV, p. 200, pl. rx. 1895. GANE, H. 8. A contribution to the Neocene Corals of the United States. Johns Hopkins Univ. Circulars, XV, No. 121, October, pp. 8-10. 184 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL. XXII. Class IN IEOVAOU. Suborder ZOANTHARIA SCLERODERMATA (or MADREPORARIA). Section MADREPORARIA APOROSA. Family TURBINOLID# (part) Edwards and Haime. Genus DESMOPHYLLUM Ehrenberg. DESMOPHYLLUM WILLCOXI Gane. (Plate XV, figs. 1-3.) 1895. Desmophyllum willcoxi GANE, Johns Hopkins Univ. Cire., XV, No. 12, October, 1895, p. 9. Corallum quite variable in shape, more or less compressed, conical, attached at base by a moderately long pedicle, which may be either broad or narrow. Surface of the wall and costal ridges smooth, at times showing the development of an epitheca. Cost well developed, cor- responding to all septa, more prominent near the calicular margin, margins not acute, some granulations over the surface. The summits of the calice in the shorter diameter are higher than in the longer. The margin of the calice is irregularly dentate. The interior of the wall coarsely pitted here and there between the septa. There are six sys- tems of septa with four well-developed cycles, and a fifth rudimentary. The septa are exsert, rather stout, thicker near the wall and in the vicinity of the base of the calicular fossa; they are generally straight but often curved, with granulated sides, and the surface often shows quite distinct striations. In well-preserved specimens the fossa is deep and narrow, and the free margins of the septa at the base of the fossa often form by means of small rod-like projections a sort of columella as in Flabellum. Such a pseudocolumella similar to that found in the present species is described by Mr. H. N. Mosely ' in his report on the “‘ Deep Sea Madre- poraria” as occurring in the Desmophyllum ingens from the fjords of western Patagonia. This species is respectfully dedicated to Mr. Joseph Willcox, of Phila- delphia. Dimensions.—The dimensions of the largest specimen are: Height, 28 mm.; greatest length and least width of calice, respectively, 32 and 25mm. The calices of the majority of the specimens are, however, more compressed than in this one. Geological horizon.—Upper Oligocene. Locality. Ballast Point, Tampa Bay, Florida. Collections.—Wagner Free Institute of Science, and in the private cabinet of Mr. Joseph Willcox, of. Philadelphia. ‘Challenger Expedition, Zoology, II, Pt. 7. Report on certain Hydroid, Alcyo- narian, and Madreporarian corals procured during the voyage of H. M.S. Challenger, in the years 1873-1876, p. 161. No. 1193. SOME NEOCENE CORALS—GANE. 185 Genus PARACYATHUS Edwards and Haime. PARACYATHUS VAUGHANI Gane. (Plate XV, figs. 4-6.) 1895. Paracyathus vaughani GANE, Johns Hopkins Univ. Cire., XV, No. 121, October, 1895, p. 9. Corallum small, broad and iow, with the calice about the same diam- eter as the base, above which the wall is somewhat constricted. Wall thin, costulate to its base. Cost« low, unequal, finely granular, more prominent near the calicular margin where they are considerably thicker than their corresponding septa. Calice circular in the young, slightly oval in the adult individual; fossa broad, moderately deep. Septa in six systems of five cycles lacking part of the sixth order of the last cycle; in forms of medium size, only four cycles are present. Primaries and secondaries subequal, thick and stout, with summits more broadly rounded and more strongly exsert than those of the remaining thin and slender septa; sides coarsely granulated, edges of the higher cycles regularly crenately dentate. Pali granular, present before all the septa but those of the last cycle, excepting in the most mature forms, where they may be lacking before a part of the fourth as well as before all of the fifth cycle of septa. Columella papillose, well developed. In polishing down the base of the coral, the rings marking the ex- istence of previous outer walls are clearly seen. In one specimen no less than eight appear, showing the growth of the coral and its rela- tion to the development of its septa. The individuals of this form generally occur alone attached to some shell, but occasionally they are found in clusters, being in close contact with one another at their sides or the outer edge of their bases. Dimensions.—Height of largest specimen, 4 mm.; breadth of calice, 11 mm. Geological horizon—Miocene, Chesapeake formation. Locality.—Carters Landing, James River, and Yorktown, Virginia. Collections.—U. S. National Museum (type); Wagner Free Institute of Science; Johns Hopkins University. Family OCULINID 4 (part) Edwards and Haime. Genus ASTROHELIA Edwards and Haime. ASTROHELIA PALMATA (Goldfuss). 1826-1833. Madrepora palmata GoLpFuss, Petrefacta Germaniz, Pt. 1, p. 23, pl. xxx, figs. 6, a, b. 1834. Oculina palmata EHRENBERG, Abhand. Berlin, Ak. Wiss. for 1832, pp. 305, 344. 1834. Madrepora palmata BLAINVILLE, Man. Act. ou Zooph., p. 390. 1836. Madrepora palmata LAMARCK, Hist. Nat. Animaux sans Vert., 2d ed., II, p. 450. 1848. Oculina palmata BRONN, Index Palontologicus, I, p. 835. 1849. Astrhelia palmata Epwarvs and Hatmer, Compte Rendus Ac. Sci., XXIX, p. 68. 186 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. 1850. Astrhelia palmata Epwarps and Harn, British Fossil Corals, Introd., p. 20. 1850. Astrhelia palmata EDWARDS and HAIME, Ann. des Nat., 3d ser., XIIII, p. 74. 1851. Astrhelia palmata EDWARDS and HAIMRE, Archiv. Mus. Hist. Nat. Paris, V, p. 37. 1853-1856. Asirhelia palmata BRONN, Lethaze Geognostica, Pt. 6, p. 307. 1857. Astrohelia palmata EDWARDS and HAIME, Hist. Nat. des Corall., II, p. 111. 1864. Astrohelia palmata MEEK, Check-list Invert. Foss. N. Am. Miocene, p. 1. 1895. Astrohelia palmata GANE, Johns Hopkins Univ. Cire., XV, No. 121, p. 9. Colony forming a palmate mass with more or less coalescing branches. In specimens which are not water worn the cost are quite distinct at the calicular edge and bent, passing at times into slight flattened ridges on the surface of the coenenchyma. Calices slightly unequal and separated by irregular distances from one another, moderately deep, and projecting somewhat above the coenenchyma. Septa in two cycles of about equal size, with a third cycle, generally rudimentary, at times, however, fully developed; narrow, coarsely toothed with granular sides. The septa often unite in the center forming a small somewhat spongy columella. This coral is of interest as being the first described from the Neocene of this country. Dimensions.—Breadth of calice from 2 to 3 mm. Geological horizon.—Miocene, Chesapeake formation. Localityx—Shiloh, New Jersey, and common at many localities in Maryland. Collections.-U. S. National Museum; Philadelphia Academy of Natural Sciences; Wagner f'ree Institute of Science; Johns Hop- kins University. Family ASTRAIDA Edwards and Haime, amended. Genus CIRCOPHYLLIA Edwards and Haime. Subgenus ANTILLIA Duncan. ANTILLIA GUESDESI (Duchassaing and Michelotti). 1850. Turbinolia biloba DUCHASSAING, Anim. Rad. des Antilles, p. 14 (not Michelin). 1854. (?) Circophyllia, species 3, LONSDALE, manuscript. 1861. Montlivaultia guesdesii DUCHASSAING and MICHELOTTI, Mem. Acad. Sci. Torino, XIX, p. 345, pl. v, fig. 13. 1864. Antillia bilobata DUNCAN, Quart. Jour. Geol. Soc., XX, p. 31, pl. 11, fig. 3. 1866. Antillia guesdesii DUCHASSAING and MICHELOTTI, Mem. Acad. Sci. Torino, XXIII, p. 172. 1868. Antillia bilobata DUNCAN, Quart. Jour. Geol. Soc., XXIV, p. 23. 1870. Antillia guesdesii DUCHASSAING, Revue des Zooph. et des Spong. des Antilles, De 22 1875. Antillia bilobata POURTALES, Geol. Mag., new ser., 2d Dec., II. 1895. Antillia biloba GANE, Johns Hopkins Univ. Circ., XV, No. 121, p. 9. Corallum simple, nearly straight, conical, at times constricted verti- cally so as to appear more or less bilobate, pedicellate. Epitheea well developed and membraniform. Cost large above, projecting outward 2.5 mm. from the calicular margins; edges rounded and marked by tubercles; sides granulated at their upper extremites in radiating rows extending over from the septa. Exotheca frequently present between NO. 1193. SOME NEOCENE CORALS—GANE. 187 the costz, inclined, and forming cells. In the largest specimens the calicular area is somewhat less than that of a transverse section of the coral about 15 mm. below the margins. Calice variable in shape from quite oval tocompressed, sometimes constricted centrally, approximating in shape the figure eight; itis shallow and presents a wavy margin ona nearly even plane in the adult, uneven in the young. The fossa is deep and narrow. ‘There are six systems with five complete cycles of septa, and in the adult individuals sometimes several orders of a sixth. The septa are crowded, often curved, a little thicker at the wall than else- where, marked on their upper edges with a very slight serration of small papillz; the sides have radiating rows of granules which merge with those on the cost; this regularity of granular arrangement is not so marked in the vicinity of the lower part of the fossa. Columella long, dense, and spongy.* Endotheca abundant. When comparing the coral at different stages in its growth, this species is very variable in shape. In the young forms, we find the corallum more conical than turbinate, more strongly attached, and its calice much more oval and not at all resembling the figure eight in outline. The margin of the calice is more sinuous, with the longer axis more depressed than the shorter. Epitheca less prominent. Septa in only four cycles, straighter and less crowded. Fossa deeper than in the adult form. The number of specimens examined by the writer is numerous, rep- resenting quite a series of individuals of most varied size and shape. Had either of several extreme types occurred alone without the con- necting forms it might well be considered as a distinct species. The young are but slightly, if at all, bilobed, the most matured indi- viduals alone being turbinate and vertically constricted with a figure eight shaped calice, the latter characteristics being described by Pro- fessor Duncan as typical of the West Indian forms. Dimensions.—The dimensions of the largest specimens are: Height, 50 mm.; greatest length and least width of calice, respectively, 59 and 25 mm. When comparing the above measurements with those of the largest specimens from Santo Domingo, the latter are found to be far larger in size than the forms occurring in Florida. Geological horizon.—Upper Oligocene, Chipola formation. Locality.—Bailey’s Ferry, Chipola River, Calhoun County, Florida; Santo Domingo, Guadeloupe (horizon not given), West Indies. Collection. U. S. National Museum. Genus ASTRANGIA Edwards and Haime. ASTRANGIA LINEATA (Conrad). 1835. Lithodendron lineatus CONRAD, Trans. Geol. Soc. Pa., I, Pt. 2, p. 340, pl. x11, fig. 4. 1845. Anthophyllum lineatum LYELL, Quart. Jour. Geol. Soc., I, p. 424. 1845. Anthophyllum lineatum LONSDALE, Quart. Jour. Geol. Soc., I, p. 495, fig. a. 1845. Caryophyllia lineata CONRAD (Manuscript label), Quart. Jour. Geol. Soc., I, p. 495. 188 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. 1846. Lithodendrum lineatum CONRAD, Am. Jour. Sci., 2d ser., I, p. 220. 1848. Anthophyllum lineatum BRONN, Index Palzeontologicus, I, p. 83. 1864. Cladocora? lineata MEEK, Check-list Invert. Foss. N. Am. Miocene, p. I. - 1895. Astrangia lineata GANE, Johns Hopkins Univ. Cire., XV, No. 121, p. 9. Colony encrusting, consisting of conical or cylindrical corallites, the largest sometimes rising a centimeter above the surface of the bas. expansion. Individual corallites divergent, but usually touching at their bases. Walls very thin at their calicular edge, thicker below. Hpitheca extremely thin, finely granulated and in some forms sl.owing parallel, somewhat sinuous, flat and broad strive extending to the base. True costz of unequal size are at times present in the vicinity of the ealicular edge. Calice as a rule circular, at times considerably compressed, deep. Septa much narrowed at the top, in mature forms in four complete cycles; septa of the last cycle much thinner and narrower than those of the preceding, often merely rudimentary; in the younger individuals septa but thirty-six; there is a tendency for the younger septa to turn toward and unite with the older; inner edges strongly dentate, teeth slightly coarser nearthe columella; sides granulated, though not stoutly so. Columella small and formed of a net-work of trabicule with additions from the septal ends. Multiplication by budding chiefly from basal expansions, although it may take place well up on the side of a parent corallite. The writer refers this species to the genus Astrangia, although there is more of an epitheca present than has been hitherto considered as characteristic of the genus. In all other respects this species seems to be typical. Lonsdale, in his description of the coral, states that it closely resembles the Lithodendron flecuosum described by Michelin in his Iconographie Zoolphytogique, from the faluns of Touraine, but Edwards and Haime have since pronounced the species of Michelin to be a Cladocora. As this American species lacks pali and possesses neither a shallow calice nor septa quite exsert, it can not belong to the genus Cladocora. Dimensions.—Breadth of calice, from 4 to 8 mm. Geological horizon.—Miocene, Chesapeake formation. Locality.—Bellefield, Yorktown, Carters Landing, and City Poiné, Virginia. Collections.—_U. S. National Museum; Philadelphia Academy cf Natural Sciences; Wagner Free Institute of Science; Johns Hopkins University. ASTRANGIA ASTRAZIFORMIS Edwards and Haime. 1850. dAstrangia astreiformis EDWARDS and Haims, Ann. des Se. Nat., 3d ser., XII, p. 181. 1857. Astrangia astreiformis EDWARDS and HaArIME, Hist. Nat. des Coralliaries, II, p. 614. 1863. Astrangia astreiformis VRRRILL, Mem. Boston, Soc. Nat. Hist., I, p. 39. 1871. Astrangia astretiformis POURTALES, Ill. Cat. Mus. Comp. Zool. Harvard Coll., No. IV, p. 80. 1895. Astrangia astreiformis GANE, Johns Hopkins Univ. Cire., XV, No. 121, p. 9. NO. 1193. SOME NEOCENE CORALS—GANE. 189 Colony encrusting, of closely ‘united corallites often free at their summit. Walls minutely granulated on the exterior surface. Coste present, most distinct near the calicular edge. Cailices open, deep and circular except when crowded. Septa very slightly exsert, narrowed at top, in six systems of three complete cycles with part of a fourth; those of the third cycle a little narrower than the preceding, uniting with them inferiorly and near the columella; edges sharply and some- what coarsely dentate; sides granulated. Columella well developed, papillary, the outer part resembling the inner teeth of the septa. Gemmation both from marginal buds on the basal expansion and from the sides of the coral between the parent corallites. This species is found recent on the shores of the Atlantic from North Carolina to Florida. It is very nearly related to Astrangia dane Agassiz, occurring on the coast of this country from New Jersey to Massachusetts. It also in many respects resembles the fossil Astrangia lineata from the Virginia Miocene. Dimensions.—Breadth of calice, from 2 to 4 mm. Geological horizon.—Miocene. Localityx—Cain Hoy, South Carolina. Collections.—U. S. National Museum. Genus ASTRANGIA Edwards and Haime. Subgenus COENANGIA Verrill. CCGENANGIA BELLA (Conrad). 1841. Astre bella ConrRaD, Proc. Ac. Nat. Sci. Phila., I, p. 33. 1842. Astrw bella CONRAD, Jour. Ac. Nat. Sci. Phila., VIII, Pt. 2, p. 189. 1857. Astrangia? bella EDWARDS and HaIME, Hist. Nat. des Corall., II, p. 615. 1857. Astrea bella TuoMEY and Ho.tmes, Pleiocene Foss. South Carolina, p. 1, pl. : I, figs. 1, la. 1860. Astrea bella HOLMES, Pleiocene Foss. South Carolina, p. 1, pl. 1, fig. 2. 1861. Asirangia? bella DE FROMENTEL, Introduct. Polyp. Foss., p. 237. 1864. Astrwa bella MEEK, Check-list Invert. Foss. N. Am. Miocene, p. 1. 1868. Astrangia (Cenangia) bella VERRILL, Trans. Conn. Ac. Art. Sci., I, Pt. 2, p. 530. 1895. Cenangia bella GANE, Johns Hopkins Univ. Cire., XV, No. 121, p. 9. Colony incrusting, rising at times into lobate extensions. Corallites thin walled, closely united. Calices irregularly prismatic, quite deep, with their fosse narrow at the bottom. Septain three complete cycles, the third less stout and usually curved toward and united, near the columella, to those of the preceding cycle; occasionally part of a fourth cycle is developed. Septa thin, with free edges sharply and roughly denticulated throughout; sides somewhat coarsely granulated, frequently the granules being also present on the inside wall of the calice. Columella moderately developed, spongy, composed of con- torted processes originating from the inner margins of the septa. Gemmation takes place in the interspaces between the corallites. This species is closely related to the living Cwnangia conferta of the Pacific, and Astrangia dane Agassiz and Astrangia astreiformis of the Atlantic. 190 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Dimensions.—Breadth of calice, from 3 to 6 mm. Geological horizon.—Miocene, Chesapeake formation; and (Pleiocene? of Tuomey and Holmes). Locality.—Darlington, South Carolina; Newbern, North Carolina; Prince George County, Virginia. Collections._-U. 8. National Museum. CG@ENANGIA MARYLANDICA (Conrad). 1841. Astrwa marylandica CONRAD, Proc. Ac. Nat. Sci. Phila., I, p. 33. 1842. Astrwa marylandica Conrap, Jour. Ac. Nat. Sci. Phila., ViII, Pt. 2, p. 189. 1845. Astrwa hirtolamellata? LYELL, Quart. Jour. Geol. Soc., I, p. 424. 1845. Astrea hirtolamellata LONSDALE, Quart. Jour. Geol. Soc., I, p..500, fig. 1. 1846. Astrea marylandica Conrad, Am. Jour. Sci., 2d ser., I, p. 220. 1846. Astroitis or Pleiadia marylandica Dana, Am. Jour. Sci., 2d ser., I, p. 221. 1847. Astrea marylandica LONSDALE, Am. Jour. Sci., 2d ser., IV, p. 359. 1847. (Allied to Caryophyllia family) Dana, Am. Jour. Sci., 2d ser., IV, p. 361. 1848. Astrea marylandica TUOMEY, Report Geol. South Carolina, pp. 182, 208. 1848. Dipsastraea hirtolamellata BRONN, Index Palxontologicus, I, p. 126. 1857. Astrea marylandica TUOMEY and HoLMEs, Pleiocene Foss. South Carolina, p. 2; pl. 1, figs. 2, 2a. 1857. Astrangia? marylandica Epwarps and HaiME, Hist. Nat. des Corall., II, p. 615. 1864. Astrwa marylandica MEEK, Check-list Invert. Foss. N. Am. Miocene, p. 1. 1868. Astrangia (Cenangia) marylandica VERRILL, Trans. Conn. Ac. Art. Sci., I, Pt. 2, p. 550. 1895. Cenangia marylandica GANE, Johns Hopkins Univ. Cire., XV, No. 121, p. 9. Colony incrusting, at times rising into lobes in the middle. Corai- lites in close contact but the individual walls distinct. Calices crowded, irregular in size and shape, oval, circular, and polygonal, the latter pre- dominating, moderately deep, with perpendicular walls. Interseptal chambers very wide. Septa subequal in two cycles, thin, the free edge subentire and concave; uniting at their inner margins to form a pseudo- columella. Walls and septa of the calices completely covered with minute tubercles. Dissepiments scarce. Growth of corallum by bud- ding of young corallites from between the angles of the older cells. This species is common in the Miocene bluffs of the James River, Virginia, where it is generally found incrusting the surface of the Pecten jeffersonius. In the opinion of the writer this apparently distantly related coral will, upon further study, prove to have close affinities with the Septas-_ trea sexradiata of Lonsdale. The nearest living ally to this form, according to Professor Verrill, is the Cenangia conferta of the Pacific Ocean. The latter, however, differs from the fossil coral in possessing usually 24 septa and only moderately wide interseptal chambers; the walls are thinner; the septa have larger lateral granules, and the columella is more strongly developed. Professor Verrill further adds! “‘that the close relation of this living (Pacific Ocean) species to the fossil and recent species (Astrangia dane and Astrangia astreiformis) of the temperate coasts on the Atlantic ‘Notes on Radiata, Trans. Conn. Acad. Arts and Sci., I, Pt. 2, p. 531. NO. 1193. SOME NEOCENE CORALS—GANE. 191 side, together with the occurrence of certain shells that are apparently identical in the two regions, but found neither in the arctic nor in the tropical regions, is very suggestive of a former connection, perhaps in early tertiary times, between the two oceans, through the temperate ‘parts of North America.” Dimensions.—Breadth of calice, from 2 to 4 mm. Geological horizon.—Miocene, Chesapeake formation and (Pleiocene ? of Tuomey and Holmes). Locality.— Virginia and South Carolina. Collections.—U. S. National Museum; Philadelphia Academy of Natural Sciences; Wagner Free Institute of Science; Johns Hop- kins University. Subgenus PHYLLANGIA Edwards and Haime. PHYLLANGIA FLORIDANA Gane. (Plate XV, figs. 7-9.) 1895. Phyllangia floridana GANE, Johns Hopkins Univ. Circ., XV, No. 121, p. 9. Colony encrusting, consisting of subturbinate corallites arising from the basal expansion. Individuals generally free above but somewhat closely united at their base. Walls thin at the calicular edge, thicker below. Coste low, subequal, minutely granulated, reaching to the base, but more prominent at the calicular margin and at the swellings just beneath the constrictions in the walls of the corallites. About on a level with the bottom of the fossa, the diameter of the corallite is least, the walls being here somewhat constricted, beneath which constriction they are again frequently swelled to a diameter equal to that at the calicular margin. Calices somewhat expanded, widely open, deep, narrow at the bottom. Septa crowded, in six systems of four complete cycles, lacking a few septa of the fifth order; primaries and secondaries more exsert, thicker and broader than the septa of the following cycles, quarternaries least exsert, thinnest and narrowest; sides of the septa sharply granulated and the edges of all but the fourth cycle rounded superiorly and subentire in their upper parts, the lower two-thirds of the septal edges being strongly lobate or dentate, the uppermost tooth being the most prominent and similar in shape to a true paliform lobe. Columella papillary occupying a very limited area; the line of separa- tion between the papille of the columella and the lowest teeth of the septa being indistinguishable. Gemmation by budding from the basal expansion of the wall of a parent corallite. This form in its general size and mode of growth very much resem- bles the Astrangia lineata (Conrad) of the Virginia Miocene deposits. Dimensions.—Breadth of calice, from 4 to 6 mm. Geological horizon.— Pliocene, Caloosahatchie beds. Locality—Alligator Creek, Monroe County, Florida. Collections.— U.S. National Musenm. The type specimen was col- lected by Mr. Joseph Willcox, of Philadelphia. 192 PROCHEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Genus CLADOCORA Edwards and Haime. CLADOCORA JOHNSONI Gane. (Plate XV, figs. 10-12.) 1895. Cladocora johnsoni GANE, Johns Hopkins Univ. Cire., XV, No. 121, p. 10. Corallites slender, somewhat flexuous, and cylindrical. When found fossil they are detached from the parent colony. Walls of moderate thickness. Cost granular, well developed, and close set; those corre- sponding in position to the septa of the first and second cycles of the same size, and larger than those corresponding the members of the third and fourth cycles. With the exception of a few cost of the fourth cycle, all reach to the base of the corallite. Calices circular with a shallow fossa. There are six systems of three complete cycies, with occasionally a few rudimentary. septa of an incompleted order of a fourth cycle. Septa exsert, the primaries more prominently so, rounded and very finely granulated laterally, giving the lamine a slightly striated appearance; primaries thicker and broader than secondaries, which, in turn, have a similar relation to the tertiaries. In sections of a corallite below the ecalice, the septa of the third cycle approach and midway between the theca and columella unite with those of the preceding cycle. Either true pali or paliform lobes are present before all but the last cycle of septa. Columella coarsely papillary but rather narrow. Gemmation lateral and often in pairs at the same height on the stem. The nearest related form to this Pliocene coral seems to be the Cladocora debilis Edwards and Haime, recent at Maderia, but owing to its meager descriptions the writer can not speak definitely on this point, as he has not had an opportunity of examining specimens of the species. The present form is named after Mr. Charles W. Johnson, of Phila- delphia, who has added so much to our knowledge of the Neocene paleontology of the South. Dimensions.—Height of the largest specimen, 12 mm.; breadth of calice, from 2 to 2.8. : Geological horizon.—Pliocene. Locality— Waccamaw River, South Carolina. Collections.—Wagaer Free Institute of Science (type), Johns Hop- kins University. The type specimens were collected by Mr. C. W. Johnson. Genus MANICINA Ehrenberg. MANICINA PLIOCENICA Gane. 1895. Manicina pliocenica GANE, Johns Hopkins Univ. Cire., XY, No. 121, p. 10. Colony very variable in shape, with a sinuous outline, from compressed conical to subhemispherical; attached by a slender pedicle, the lower part of the base curved in the direction of the greater axis of the ‘NO. 1193. SOME NEOCENE CORALS—GANE. 193 colony. Valleys rather wide, long and deep, having perfect communi- cation between them. Corallines broad and furrowed. Wall thin. Epitheca well developed, pellicular; its lines of growth in wavy ridges of varied thickness, the thinnest of which are pierced by the granules of the costz; im some cases it is limited to the lower part of the base, in others it reaches to the summit of the outer wall of the colony. Coste of nearly equal size, the oldest only reaching the pedicle; con- siderably exsert, being a continuation of the septa at their upper edges; finely toothed on the free edge, rows of granules on the sides. Exotheca abundant. Septa quite exsert, slightly thicker at the wall, granulated laterally in radiating rows, with free edge regularly toothed, the teeth being somewhat larger near the paliform lobe, which is some- what thicker, at least near the columella, than the principal septum to which it belongs. Columella well developed, narrow, of a coarse spongy nature, especially when seen in vertical section. Endotheca abundant, with dissepiments of unequal length inclined toward the inner and lower edges of the septa. Pourtales' considered that all the living West Indian types of this genus represented one species, the Manicina areolata (Linneus). Whether this be true or not, the species under discussion differs from all recorded living forms. More especially it varies from Manicina areolata in the following particulars: Its collines are generally broader; the septo-cost of adjoining individuals are rarely united, the walls of the individuals being distinct; septa somewhat stouter and less crowded together, in very rare cases only exceeding eleven in number to the centimeter; the teeth on the inner edge of the septa are more regular in size and shape. On the other hand, in Manicina areolata the col- lines are narrow, with many of the septo-coste of neighboring indi- viduals united. The septa are thinner and more crowded, from fifteen to twenty (Quelch) to the centimeter. The teeth on the inner edge vary more in different parts of the same septum. This differentiation of the teeth on different parts of the edge of the septum and paliform lobe, as shown by the living types, is well illustrated in the “Report on the Florida Reefs” by Agassiz.’ Dimensions.—This species is very variable in size and shape. The greatest width of one corallum measured is 100 mm.; length, 150 mm. (estimated); height, 80 mm.; of another, width, 55 mm.; length, 135 mm.; height, 55 mm. Geological horizon.—Pliocene. Locality.—Caloosahatchie River, Florida. Collections —U.S. National Museum (type), collected by Mr. W. H. Dall; Wagner Free Institute of Science, collected by Messrs. Heilprin and Willcox. 17. Cat. Mus. Comp. Zool., Harvard Coll., No. IV, pp. 72, 73. Memoir Mus. Comp. Zool., Harvard Coll., VII, No. 1, pl. vt, fig. 6. Proce. N. M. vol. xxii——138 194 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. -Genus SEPTASTRAA dOrbigny (1849), emend. Hinde. SEPTASTRAIA SEXRADIATA (Lonsdale). 1837. Astrea sp. W. B. and H. D. RoGeErs, Trans. Am. Phila. Soc., new ser., V, p. 338. 1845. Columnaria ? secradiata LONSDALE, Quart. Jour. Geol. Soc., I, p. 497, figs. a, b. 1845. Columnaria ? sexradiata LYELL, Quart. Jour. Geol. Soc., I, p. 416. 1846. Astroitis sexradiata DANA, Am. Jour. Sci., 2d ser., I, p. 221. 1846. Astroitis sexradiata DANA, U. S. Exploring Expedition, Zoophytes, p. 722. 1848. Columnaria ? sexradiata BRONN, Index Paleontologicus, I, p. 321. 1849. Septastrea forbesi EDwARDs and Haime, Ann. des Sci. Nat., 3d ser., XII, p. 64. 1849. Septastrea subramosa D’ORBIGNY (nominal), Note sur les Polyp. foss., p. 9. 1852. Septastrea subramosa D’ORBIGNY, Prodr. de Pal., III, p. 146. 1857. Septastrea forbesi Epwarps and HaimR, Hist. Nat. des Corall., I, p. 450. 1857. Astrangia ? bella Epwanrvs and Haime, Hist. Nat. des Corall., II, p. 615. 1861. Astrangia? bella DK FROMENTEL, Introduction Polyp. foss., p. 237. 1861. Septastrwa forbesi DE FROMENTEL, Introduction Polyp. foss., p. 174. 1851. Septastrea forbesi KDWARDS and Haime, Archiv. Mus. Nat. Hist., V, p. 115. 1864. Septastrwa ? sexradiata MEEK, Check-list Invert. Foss., N. Am. Miocene, p. 1. 1864. Septastrwa forbesi MEEK, Check-list Invert Foss. N. Am. Miocene, p. 1. 1884. Astrea sp. W. B. and H. D. RocErs, Reprint of Ann. Reports and other Papers on Geology of the Virginias, p. 667. 1886. Glyphastrwa forbesi DUNCAN, Abstract. Proc. Geol. Soc. London, No. 495, p. 18. 1887. Glyphastrwa sexradiata DUNCAN, Quart, Jour. Geol. Soc., XLII, p. 30. 1887. Glyphastrea forbesi DUNCAN, Quart. Jour. Geol. Soc., XLIII, p. 29, pl. mt. 1888. Septasirea sexradiata HINDE, Quart. Jour. Geol. Soc., XLIV, p. 219, pl. 1x, figs. 6-16. 1888. Septastrea forbesi HINDE, Quart. Jour. Geol. Soc., XLIV, p. sy pl. 1x, figs. 1-5, 7-15, 17. 1895. Septastrwa sexradiata GANE, Johns Hopkins Univ. Cire., XV, No. 421, p. 10. Colony incrusting at base, rising into cylindrical compressed stems with short, rounded branches or of large flattened masses with lobate and digitiform expansions. Corallites with walls in close contact but distinct one from another, subeylindrical in the interior, although pris- matic at the surface of the corallum. The matured calices are shallow with thickened margins, an impressed line generally marking the division between the individuals; the floors of the calices, which have a dome-shaped elevation in the center are entirely closed with stereo- plasm, the upper edges of the septa alone shghtly projecting. When the calices are immature or much crowded the walls are thin and the floor near its periphery is incomplete. The entire calice when per- fectly preserved is covered with minute tubercles, although the surface of the septa in the interior of the corallites is smooth. Septa usually 12 in the lower portion of the corallite; in the calice a rudimentary third cycle is often added. Abnormally the calice may possess from 0 to 36 septa. The inner septal ends are often intertwisted to form a pseudocolumella. Dissepiments very thin, irregularly developed, fre- quently at the same level in the different interseptal loculi, usually from 1 to 2 mm. apart, the uppermost dissepiment of the corallite form- ing the base to the infilling stereoplasm. Increase by gemmation from buds formed at the interspaces between the walls of adjacent mature corallites. NO. 1193. SOME NEOCENE CORALS—GANE. 195 For a further detailed and most elaborate description of this coral consult the paper by Dr. G. J. Hinde on the genus Septastrwa in gen- eral, and the present species in particular. Nothing but the mode of attachment is now added to the characteristics of the form as so clearly determined by Dr. Hinde. The present writer, however, considers the Septastrea forbesi Kd- wards and Haime, as a synonym of the S. sexradiata Lonsdale. In discussing the similiarity of the two species Dr. Hinde! aptly sum- marizes the subject in the following words. He says that— It is very evident that in form, mode of growth, and in every other feature but one, this species (S. sexradiata) is closely similar to Septastrwa forbesi. The one fea- ture in which it differs is the greater development of the third cycle of septa within the calices. This feature, curiously enough, is limited to the calices, for in the lower part of the corallites only the 12 septa of the first and second. cycles are devel- oped, as in S. forbesi, so that specimeus in which the surface features are partially obliterated can not be distinguished from this latter species. I have serious doubts whether this one feature may not, after all, be due to a more favorable condition of growth or environment to which this particular specimen has been exposed. It is somewhat remarkable that of the thirteen specimens of Septastrwa which have come under my notice this is the only one which exhibits such a development of the third eycle of septa in the calices; in all others this cycle is only indicated by marginal ridges. There is a considerable amount of variation in this respect in the specimens referred to Septastrea forbesi, for in some only 6 septa are developed in the calices, in others 12, and yet no specific distinction can be made, since in certain specimens both conditions are present. It might therefore be urged that, as Lonsdale’s speci- men is undistinguishable in every other respect from Septastrwa forbesi, the difference in this variable feature does not possess specific value. While admitting the force of the argument, I think it is preferable provisionally to allow the difference to be specific, and if further evidence should show that it must be regarded as merely due to external conditions, and that there is only one species, then this species must bear Lonsdale’s name of sexradiata, since this has the priority of Edwards avd Haime’s name, forbesi. As the fori under discussion is the most common coral occurring in the beds of the Virginia Miocene, the writer has had an opportunity of studying a large series of specimens, and has reached the conclusion as stated above that all belong to the same species, although in the superficial calices there is often a remarkable divergence in the rela- tive development of the septa and the pseudocolumella. Were the Septastrea forbesi allowed of specific value, then a number of new spe- cific names should be employed for these forms with calices, either con- taining but 6 or less septa, or with the septa of the latter cycles united with those of the preceding, or with the other similar modifications in the calice. That both Mr. Lonsdale and Sir Charles Lyell considered these Sep- tastrea as of one species, the S. sexradiata is evinced by the fact that the former, who described the forms, gave but one specific name to them, and the latter, who collected the specimens, stated? that lying on the beach of the James River were masses of the S. sexradiata upward of 2Tdem., I, 1845 p. 416. 196 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. 2 feet in width, which had been washed out of the shell marl. The above would show that both Lonsdale and Lyell regarded the coral described as representing the specimens collected rather than of:a peculiar variety as has been since considered by later writers, with the possible exception of Dr. Hinde, who desired further information on the subject before finally committing himself. The first reference to this coral is found in 1837 as a footnote to an article! on the gevlogy of the Tertiary formations of Virginia by W. B. and H. D. Rogers. They remark that an Astrea of immense magnitude was lying at that time half buried in sand on the beach of Tarbay, James River, having fallen to its present position from an overhanging cliff. They add further that it was much reduced in size since its fall, but had then an approximate weight of 700 pounds and a diameter in its greatest length of 4§ feet. Mr. Arthur Bibbins has recently secured this his- toric specimen for the Geological Museum of the Woman’s College of Baltimore where it is now preserved. Dimensions.—The largest specimen is about 1.5 meters in its greatest diameter; breadth of calices from 3 to 8.5 mm. with an average width of 4.6 mm. Geological horizon.—Miocene, Chesapeake formation. Locality.—Bellefield and Yorktown on the York River, and at many points on the James River, Virginia. In some of the previous papers on the subject this coral is frequently mentioned as coming from Mary- land, but none of the specimens in the collections examined by the writer came from that State. Collections.—U.S. National Museum; Philadelphia Academy of Natu- ral Sciences; Wagner Free Institute of Science; Johns Hopkins Uni- versity; Woman’s College of Baltimore. CATALOGUE OF SPECIFIC NAMES EMPLOYED BY WRITERS UPON THE NEOCENE CORALS OF THE UNITED STATES. Page Anthophyllum lineatum Lonsdale, 1845, Astrangia lineata (Conrad) .......-.. 187 lineatum Lyell, 1845, Astrangia lineata (Conrad).----..----.---- 187 lineatum Bronn, 1848, Astrangia lineata (Conrad).----.....----- 188 Antillia biloba (Duchassaing) Gane 1895. .....---- We SL ee ee 186 bilobata Duncan, 1864, Antillia biloba (Duchassaing) -....-...----.---- 186 bilobata Duncan, 1868, Antillia biloba (Duchassaing)-.--..--.---------- 186 bilobata Pourtales, 1875, Antillia biloba (Duchassaing)....-.---.------ 186 quesdesii Duchassaing and Michelotti, 1866, Antillia biloba (Duchas- BALMS) 0 oe SS ars a ai elnyeie nisin stale re ereticterere (ote slei See eter eee enone 186 Astrea bella Tuomey, 1857, Cenangia bella (Conrad) .-...-..---.---..-------- 189 bella Holmes, 1860, Cenangia bella (Conrad) ......---..---------.----- 189 marylandica Conrad, 1846, Cenangia marylandica (Conrad) ---.--..---- 190 marylandica Lonsdale, 1847, Cenangia marylandica (Conrad) -.-...----- 190 marylandica Tuomey and Holmes, 1857, Cwnangia marylandica (Con- TNO een ae ee cS Ie ENE ena MAO AES aS Coan Snes GOOG 190 marylandica Meek, 1864, Cenangia marylandica (Conrad) .-...-.--.---- 190 1 Trans. Am. Phil; Soc., new ser., V, p. 338, orin the Reprint of the Geology of the Virginias, p. 667. NO. 1193. SOME NEOCENE CORALS—GANE. Astrangia astrwiformis Edwards and Haime, 1850, Gane, 1895. ...--.---------. astreiformis Edwards and Haime, 1857 - ......-.-- See aaee astreiformis Verrill, 1863, Astrangia astre@iformis Sse) ana Haime. astreiformis Pourtalés, 1871, Astrangia astrwiformis Edwards and ? bella Edwards and Haime, 1857, Caenangia bella (Conrad) .....--.. ? bella Edwards and Haime, 1857, Septastrwa. sexradiata (Lonsdale) - ? bella de Fromentel, 1861, Cenangia bella (Conrad) .....-----.----- ? bella de Fromentel, 1861, Septastrwa sexradiata (Lonsdale)-....-.-. linenia (Commech) Carne, W8.5556 6560 vosedo cos5 cese Seo vuoobacoes ET ? marylandica Edwards and Haime, Canangia marylandica (Conrad) . Astrea sp. Rogers, W. B. and H. D., 1837, Septastrwa sexradiata (Lonsdale)... sp. Rogers, W. B. and H. D., 1884, Septastrwa sexradiata (Lonsdale). -- Astrea bella Conrad, 1841, Canangia bella (Conrad) .....--..---.------------- bella Conrad, 1842, Cenangia bella (Conrad) ...-......-------.---- <--- bella Meek, 1864, Coenangia hella (Conrad) ......-...-.-.----.--------- hirtolamellata? Lyell, 1845, Cenangia marylandica (Conrad) ----..------ hirtolamellata Lonsdale, 1845, Cenangia marylandica (Conrad) .--..---- marylandica Conrad, 1841, Cenangia marylandica (Conrad) ....-.---- -- marylandica Conrad, 1842, Canangia marylandica (Conrad) ....---- ---- marylandica Tuomey, 1848, Cenangia marylandica (Conrad) ...-------- Astrhelia palmata Edwards and Haime, 1849, Astrohelia palmata (Goldfuss). -- palmata Edwards and Haime, 1850, Astrohelia palmata (Goldfuss). - - - palmata Edwards and Haime, 1851, Astrohclia palmata (Goldfuss) -- -- palmata Bronn, 1853-56, Astrohelia palmata (Goldfuss) --.-------.---- Astrohelia palmata, Edwards and Haime, 1857, Astrohelia palmata (Goldfuss). - palmata Meek, 1864, Astrohelia palmata (Goldfuss)..--.....--.------ pola (Cochin) Cee, Weis s66s5oqcace0 ceo sanicss ous coocoucedoss Astroitis sexradiata Dana, 1846, Septastrea sexradiata (Lonsdale) .....--------- or Pleiadia marylandica Dana, 1846, Cenangia marylandica (Conrad). Caryophyllia lineata Conrad (manuscriptlabel), 1845, Astrangia lineata (Conrad) (allied to family of ) Dana, 1847, Canangia marylandica (Conrad) Circophyllia species 3, Lonsdale, manuscript, 1854, Aniillia (TEESE DONE SSCS BMG! WHENONOBA). coossosdeccousboedsos nba 6a0Go6 Gadd 5555 codeuu GoobED conSIoDad Clagacore polbinecnt: Caine, Ns a4 sedans Sson Sab ssnceoodde G65b nnoCbo UaScueseaod ? lineata Meek, 1864, Astrangia lineata (Conrad).-.....--...---------- Cenangia bella Verrill, 1868, Cenanyia bella (Conrad) ....-....---.---------- aula, (Conmmeyel)) Ceyngy, shkey se oboe bs sesu eden secoeso sae obaEns GaboSE boUe marylandica Verrill, 1868, Cenangia marylandica (Conrad) ...--.---- moampjanaica (Conrad) Gane yl Sob aacsencen oo enie cis ccis= = eee Columnaria? sexradiata Lonsdale, 1845, Septastrwa sexradiata (Lonsdale)... --- sexradiata Lyell, 1845, Septastrwa sexradiata (Lonsdale) ....-.- ---- sexradiata Bronn, 1848, Septasirwa sexradiaia (Lonsdale)..------.-- iDesmapibg lon: woallioorse Cannes saa eGo c665.G080 cobs Conbeo Sodas HooeoBbEsues Dipsastrea hirtolamellata Bronn, 1848, Cenangia marylandica (Conrad) .-..----- Glyphastrea forbesi Duncan, 1886, Septastrwa sexradiata (Lonsdale) ..------.. -- sexradiata Duncan, 1887, Septastrwa sexradiata (Lonsdale) ......-- forbesi Duncan, 1887, Septastrewa searadiata (Lonsdale) ...-..----- Lithodendron lineatus Conrad, 1835, Astrangia lineata (Conrad)....------------ lineatum Conrad, 1846, Astrangia lineata (Conrad).-.-..-..-.----- Madrepora palmata Goldfuss, 1826-33, Astrohelia palmata (Goldfuss)....-. ---- palmata Blainville, 1834, Astrohelia palmata (Goldfuss) ..----.----- palmata Lamarck, 1836, Astrohelia palmata (Goldfuss) ...---..----- ORIGRE jolwocennea, Caine, IOs co5cdeseeo obbba0 5566 aa 0005 S5eE Boob beCoDdeSeaSe Montlivaultia guesdesii Duchassaing and Michelotti, 1861, Antilla guesdesi (Duchassainc’ and Michelotti):---=. --c25- 22-2. 2. -- 22 scene sevcen ne 50006 189 194 187 190 194 194 189 189 189 190 190 190 190 190 185 186 186 186 186 186 186 194 190 187 190 186 192 188 189 189 190 190 194 194 194 184 190 194 194 194 187 188 185 185 185 192 186 198 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL Page Oculina palmata Ehrenberg, 1834, Astrohelia palmata (Goldfuss} »224- 5s 185 palmata Bronn, 1848, Astrohelia palmata (Goldfuss).......--..-------- 185 IEG ROKCTORAN OS OCUUGOGH OO, (CANT) Wee ea5e GaSe boGK45 6550 5565605455 boos Goon cea = ses- - 185 PhyllangiajlonidanaGaney'S95ese= sees es eee eee ete esse ee ee eee 191 Pleiadia or Astroitis marylandica Dane, 1846, Canangia marylandica (Conrad)-.- 190 Septastrwa forbesi Edwards and Haime, 1849, Septastrwa sexradiata (Lonsdale). 194 forbesi Edwards and Haime, 1851, Septastrwasexradiata (Lonsdale)... 194 forbesi Edwards and Haime, 1857, Septastrea sexradiata(Lonsdale)... 194 forbesi de Fromental, 1861, Septastrwa sexradiata (Lonsdale)..---.-. 194 forbesi Meek, 1864, Septastrwa sexradiata (Lonsdale).........-----.. 194 forbesi Hinde, 1888, Septastrwa sexradiata (Lonsdale) .....-....----- 194 ? sexradiata Meek, 1864, Septastrwa sexradiata (Lonsdale) -..--..-.---- 194 secradiata Hinde, 1888, Septastrwa sexradiata (Lonsdale) .--.-.-.--- 1943 sexradiata (uonsdale) Gane 189o sess pease ee eee 194 subramosa d’Orbigny,-1849, Septastrwa sexradiata (Lonsdale) ...--.. 194 subramosa d’Orbigny, 1852, Septastrwa sexradiata (Lonsdale). --.-.--. 194 Turbinolia biloba Duchassaing, 1850, Antillia guesdesi (Duchassaing and Miche- lott) acs ssees eee as Sie ek SaaS SSS AS Ly iS eee fo eye 186 EXPLANATION OF PLATE. PLATE XV. Bigs, 1-3. Desmophiyllam nvillcoxt Gane conser = eee ia aaa 184 Fig. 1, view of a specimen from the side; altitude of specimen, 28 mm.; fig. 2. calice of the same, greater diameter, 32 mm.; fig. 3, view of another specimen, looking at end of longer trans- verse axis, altitude of specimen, 30 mm. A-6. Ranacyathusivaughant Gane) = ee) oes ea ieee eee eee 185 Fig. 4, view of a specimen from the side, altitude, 6mm.; fig. 5, calice of the same, greater diameter, 8 mm.; fig. 6, cost of another specimen enlarged. =O. RAY LlAngiaaflontd ana) Gane) aes vases selec oes ee ae eer ee eee 191 Fig. 7, general view, natural size; fig. 8, coste enlarged; fig. 9, a calice, greater diameter, 6.5 mm. : 10-12. Cladocora johnsoni Gane. --..--.----2--. «+--+ --+- --- 2 -- ---- == -- 192 Fig. 10, view of a specimen, 11 mm. long; fig. 11, view of another specimen, 7.5 mm. long; fig. 12, calice of the latter, diameter, 3mm, U, S. NATIONAL MUSEUM PROCEEDINGS, VOL. XXII PL. XV NEOCENE CORALS OF THE UNITED STATES. FOR EXPLANATION OF PLATE SEE PAGE 198. (ae Tene Exit . 4 fe Apaiiaes iat ey, A NEW FOSSIL SPECIES OF CARYOPHYLLIA FROM CALI- FORNIA, AND A NEW GENUS AND SPECIES OF TURBI- NOLID CORAL FROM JAPAN. By T. WAYLAND VAUGHAN, A. M., Assistant Geologist, U. S. Geological Survey. iN NEW FOSSIL SPECIES OF CARYOPHYLLIA FROM CAL- IFORNIA. The coral described below was in some material sent by Mr. Ralph Arnold, of Leland Stanford Junior University, to the U.S. National Museum to be named. Mr. W. H. Dall kindly placed the specimen in my hands for determination. As it proved to be undescribed, the following diagnosis has been prepared. CARYOPHYLLIA ARNOLDI, new species, (Plate XVI, figs. 1, 2.) Form of corallum slightly deformed inverted cone-shaped. A basal scar present, but the coral in its later stages was evidently unattached. Base subacute, calice nearly circular in transverse outline. Dimensions.—Greater diameter of calice, 16 mm.; lesser diameter of calice, 15.3 mm.; height of corallum, 16.5 mm.; depth of fossa, about 6.5 mm. Coste very distinct, low, broad, rounded, or flattish, show no orna- mentation, but the specimen is worn and they were probably minutely granulated. There is a tendency to alternation in size, which is pro- nounced near the base. There is no observable epitheca. The wall is stout, solid, a distinct pseudotheca. The cost are wide and the inter- costal spaces very narrow, simply furrows, and the septa are thickened at the wall. The upper margins of the septa project very slightly above PROCEEDINGS U. S. NATIONAL Museum, VoL. XXII—No. 1194. 199 200 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. the upper limit of the corallum wall. There are four complete cycles of septa (forty-eight in all), arranged as follows: Twelve large thick septa, joined to the columella by very thick pali. The width of each palus is equal to the width of its corresponding septum; the upper margins of the palus stands about 2 mm. above the upper surface of the columella, and fully 1 mm. above the notch dividing the palus from the septal lamina. The width of the paliis about 2.5mm. From the upper margin of the septum to the notch between septum and palus is about 4.5 mm., may be slightly greater. Theinner ends of the pali are fused solidly around the columella and to it. On the septal faces are small granulations arranged in curves parallel to the upper septal mar- gins. On the faces of the paliare granulated or serrated crests arranged in curves parallel to the upper margins of the pali. Between each pair of these larger septa are three smaller (one of the third cycle and two of the fourth). The members of the third cycle are narrow above the level of the upper termination of the columella; below this they widen, but do not seem ever to reach the columella. The members of the fourth cycle are narrow, and thin except where they arch over the walls. The columella is essential, is composed of several pieces, trabeculze, which are firmly soldered one to another and to the inner terminations of the pali by solid basal calcareous deposit. From the upper margins of the septa to the upper termination of the columella is about 6.5 mm.; that is, the calicular fossa is about 6.5 mm. deep. The greater diameter of the upper termination is 5 mm., the lesser 3.5 mm., above whose level, as may be gathered from what preceded, the pali form a regular crown. Locality—San Pedro Hill, San Pedro, California. Geological horizon.—Pleistocene. Type.—Cat. No. 157509, U.S.N.M. A NEW GENUS AND SPECIES OF TURBINOLID CORAL FROM JAPAN. The specimen upon which the subsequent descriptions are based was sent to the U. S. National Museum by Rev. H. Loomis, Yokohama, Japan. Mr.W.H. Dall asked me to determine it, and as it proves to belong to both a new genus and species, the following generic and specific diagnoses have been prepared: LEVIPALIFER, new genus. Salient generic features.—Simple Turbinolid; corallum very short, inversely conical in shape, almost discoid; no sign of attachment, living free. Wall naked. Septa within the wall possess entire or faintly crenate margins; external to the wall beset with rounded dentations. Coste dentate, the dentations with blunt or rounded ends. Four com- plete cycles of septa; palit are before all septa and have entire margins. Columella essential, trabecular. NO. 1194. TWO NEW TURBINOLID CORALS—VAUGHAN. 201 LEVIPALIFER ORIENTALIS, new species. (Plate XVI, figs. 3-7.) Corallum, without any sign of attachment, subdiscoid in form, the base pointed. Transverse outline of the calice circular. Dimensions.— Diameter, 20 mm.; altitude, 9 mm. Cost well developed, thin, distant, correspond to all septa; those of the first and second cycles of the same size; those of the third slightly sinaller, and those of the fourth still smaller. They are rather tall at the calicular edge of the wall, becoming lower as the base is approached. Two cycles are continued to the apex of the base. The costal margins are beset with rather tall, rounded or blunt dentations. In some instances the ends of the dentations are swollen. Each dentation marks the emergence on the surface of a small ridge (or stria) along which are arranged rather tall but not very sharp pointed granulations. The lateral faces of the cost are perpendicular to the corallum wall; that is, the costz show no, or almost no, thickening at the wall. There are four complete cycles of septa, arranged in six definite sys- tems. Six of the septa stand isolated from the other septa and extend directly to the columella. Between each pair of these six is a definite group of septa belonging to higher cycles. Those of the third cycle bend toward those of the second, and the members of the fourth bend toward those of the third. Quite frequently the members of the fourth cycle are longer than the inclosed members of the third. The longer member of the fourth cycle for any given half system is the one stand- ing next to the septum of the first cycle. This arrangement is the common one in the Kupsammide. The fusion of the septa into the groups above indicated is affected by the pali. The lateral ornamenta- tion of the septa consists of ridges or strive, which possess a line of _ divergence slightly interior to the wall and parallel to it, and granula- tions placed along the striz. Within the line of divergence the striz bend toward the interior of the corallum, and exterior to it they bend outward, ultimately downward. On the inner side of the line of diver- gence the septal margin is entire or shows very faint crenations. Exterior to it each ridge is terminated by a dentation, not very long just at the line of divergence, but quite soon the dentations are larger. The dentations on the peripheral ends of the septa, that is, the cost, have already been described. When one looks directly at the edge of a septum the strizw are seen to alternate in position, and the septum is usually faintly undulate in a direction parallel to the long axis of the strie. The granulations are placed along the strize and are arranged in curves parallel to the septal margin. The granu- lations are rather tall, but are not sharp-pointed; their tips are blunt or rounded. The septal margins project considerably above the upper edge of the wall; the members of the first and second cycles are equally prominent, and are more exsert than those of the third and fourth 202 PROCEEDINGS OF THE NATIONAL MUSEUM. - VOL, XXII. cycles, which are equal in prominence. The septa are distant, thin, weak, and show no marked thickening at the wall. Pali are before every cycle of septa. Those before the first cycle are the broadest. The pali belonging to each septal group included between the members of the first cycle are deltoid in arrangement. The arrangement is well shown in Plate XVI, fig. 6. The pali are broad and are simple lobes, excepting usually there is an inner tooth before the delta composed of the pali of each group of septa of the third and fourth cycles. The margins of the pali are entire. The trabec- ular make-up of the pali is the same as that of the septa; each palus has its own line of divergence, etc. The fusion of the septa into deltas through the pali is effected usually by synapticula. Excepting these synapticula the interseptal loculi are entirely vacant. Some hints have already been thrown out as to the make-up of the wall. It is entirely naked, imperforate, and rather thin, thickening very little from internal calcareous deposit; no processes extending inward from it between the septa (such as are quite common in some Turbinolid genera) were seen. As the septa and cost do not thicken in crossing the wall, this coral would be said to possess a eutheca. In my mind the point to be emphasized is that the septa are distant and — thin, and the connecting wall is also thin. The wall between the cost possesses no ornamentation. The columella is large, well-developed, trabecular, and spongy. Locality.—Boshiu (Awa), eastern coast of Japan. Type.—Cat. No. 19391, U.S.N.M. Bathymetric distribution not known. Remarks.—The natural group to which this coral belongs is very evident. It is very closely related to Trochocyathus and Deltocyathus. It is separated from the latter genus solely by possessing one more crown of pali. The genus Leptocyathus Milne-Edwards and Haime, was founded to receive the coral from the London Clay, designated by them Leptocyathus elegans,' which, according to them, possesses dentic- ulate pali before all cycles of the septa. The pali of Leptocyathus, according to the figure (Plate III, fig. 6c), are small, and do not exhibit a noticeably deltoid arrangement. There are other differences; the septa are much thickened at the wall, and the cost possess very broad bases. Pourtales? has described a species, found off Conch Reef and Tennessee Reef, Florida waters, as Leptocyathus stimpsoni. I doubt if this coral is really a Leptocyathus. It possesses many points of differ- ence from the type species L. elegans, and certainly is not closely related to the species here described. It may be repeated that Levipalifer is most closely related to Deltocyathus. ‘Monograph Brit. Foss. Corals, Paleontograph. Soc., 1850, pp. xiv, 21, 22, pl. 111. figs. 6, 6a-c. 2T1l. Cat. Mus. Comp. Zool., No. LV (Deep Sea Corals), 1871, p. 12, pl. 11, figs. 1-3. No. 1194. TWO NEW TURBINOLID CORALS—VAUGHAN. 203 EXPLANATION OF PLATE. [All drawings made by Dr. J. C. McConnell. | PLATE XVI. Figs. 1,2. Caryophyllia arnoldi, new species. Cat. No. 157509, U.S.N.M. 3= Fig. 1, upright view; height of corallum, 16.5 mm.; fig. 2, view of calice from above; greater diameter of calice, 16 mm. 7. Levipalifer orientalis, new genus and new species. Cat. No. 19391, U.S.N.M. Fig. 3,view of base; diameter of base, 20 mm.; fig.4, upright view; alti- tude, 9mm.; fig. 5, portion of costa and exsert portion of septum, looking at edge, enlarged, shows character of granulations on the septal faces; fig. 6, one complete system of septa, enlarged, shows the arrangement of the pali; fig.7, view of the sides of a septum of the fourth cycle, and one of the first cycle, showing } ali in profile, the septal granulations, ete. Thenotch behind the pali is usually deeper than in the case of the palus in the foreground. U. S. NATIONAL MUSEUM PROCEEDINGS, VOL. XXII PL. XVI NEW TURBINOLID CORALS. FOR EXPLANATION OF PLATE SEE PAGE 203. NOTES ON BIRDS COLLECTED BY DOCTOR W. L. ABBOTT IN CENTRAL ASIA. By HARRY C. OBERHOLSER, Assistant Biologist, Department of Agriculture. ‘Dr. Abbott’s earliest collections of birds from Cashmere and Ladak have already been fully treated by Dr. C. W. Richmond.’ Upon leav- ing Madagascar, in 1895, Dr. Abbott proceeded again to Cashmere, where he spent the remainder of the year—some four months—mostly in places previously visited. Again, in 1897, he was there for a month or So from about the middle of October, having come from Ladak, in which latter region, at various localities, he had been collecting since the middle of June. As the ornithological results of these later visits to Central Asia, the United States National Museum has duly received two consignments of specimens; and at the request of the curator of the division of birds a list of them is here presented. Although these collections number together only 142 specimens, representing 62 species, they comprise several birds of considerable interest and a number not previously obtained by Dr. Abbott. All matter within quotation marks is to be credited to the collector. The writer is under obligation to Dr. Richmond for his uniform courtesy during the preparation of this paper, as well as for permission to make use of his notes upon several of the larger species. Family LARID J. LARUS BRUNNEICEPHALUS Jerdon. Larus brunneicephalus JERDON, Madras Journ., XII, 1840, p. 25. Two adult females in somewhat worn breeding plumage, from Tsokr Chumo Lake, Ladak, at 15,000 feet altitude, July 13,1897. ‘Tris pale greenish; orbital skin red; feet red; billdark red. Length, 163 inches. A colony of 15 or 20 individuals at this lake. Nests not found.” 'Proc. U. S. Nat. Mus., XVIII, 1896, pp. 451-503. PROCEEDINGS U. S. NATIONAL Museum, VOL. XXII—No. 1195. 206 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. LARUS RIDIBUNDUS Linneus. Larus ridibundus LINN2US, Syst. Nat., 12th ed., I, 1766, p. 225. One specimen, from the Valley of Cashmere. This is an adult male in winter plumage, with no brown hood, and with dusky only ou aurie- ulars; the black and white areas on primaries are very sharply defined. “Trides blackish brown; feet red; claws black; bill red, the tip black. Length, 16 inches.” STERNA HIRUNDO TIBETANA (Saunders). Sterna tibetana SAUNDERS, Proc. Zool. Soc. Lond., 1876, p. 649. Two adult males: one from the Indus River at Mya, Ladak, 13,000 feet, September 11,1897; the other from Tsomoriri Lake, Ladak, 15,000 feet, July 29,1897. ‘‘ Length, 134 and 142 inches, respectively. Iris dark brown; bill red, the tip black; feet red; claws black.” Careful comparison with a large series of American and European specimens indicates that the bird from Thibet, though not specifically distinct from S. hirundo, is yet well worthy of separation as a geograph- ical race, to which the name tibetana is applicable. This central Asian form is much darker on the mantle and much less whitish on the nape; the lower parts also are of a deeper gray, particularly on the flanks. Family CHARADRITDAE. OCHTHODROMUS INCONSPICUUS (Wagler). Charadrius inconspicuus WAGLER, Isis, 1829, p. 651. Charadrius pyrrhothoras GOULD, Birds Europe, IV, 1837, pl. 299. Agialitis pamirensis RICHMOND, Proc. U.S. Nat. Mus., X VIII, 1896, p. 589. Six specimens (four adult males, one female, and one immature male) from various localities in Ladak, at from 14,000 to 15,000 feet; taken July 7 to 20, and September 8, 1597. Among the males the amount and shade of the ochraceous on the crown varies considerably, and on the upper tail-coverts of one specimen there is very little brown; otherwise all are very similar. There are a few small flecks of white in the black of the forehead and lores, particularly the latter, but this effect is due to the wearing off of the black tips of the feathers, with its consequent exposure of the white basal portions, and would probably not be notice- able in fresh plumage. “Length, 74 to 74 inches. Iris dark brown; bill, feet, and claws black.” Dr. Sharpe dismisses the female of this species with the remark that it is “similar to the male;”! but as a matter of fact it differs very notice- ably in having the black of the forehead and lores replaced by pale ochraceous brown mixed with white, that of the subocular and auricu- lar regions by dull brown. The crown is also duller, the breastband ' Cat. Birds Brit. Mus., XXIV, 1896, p. 228. NO. 1195. BIRDS FROM CENTRAL ASIA—OBERHOLSER. 207 paler, the collar on hind neck narrower and less well defined. The young bird resembles the adult female, but is darker brown above, with buffy ochraceous margins to all the feathers; there is also more buffy on the sides of the head, the breastband is paler, and the entire lower surface, with the exception of the crissum, is more or less tinged with buffy. . Careful comparisons with the type of Dr. Richmond’s Wgialitis pamirensis prove beyond a doubt that it is the same as the bird Dr. Sharpe identifies! as pyrrhothorax of Gould. When Dr. Richmond described his pamirensis he had not access to the volume of the British Museum Catalogue containing the Limicole; and the species is synon- ymized with mongolus in Seebohm’s Geographical Distribution of Plo- vers, Sandpipers, and Snipes. Since no specimens of pyrrhothorax at that time existed in the United States National Museum collection, the mistake was of course a very natural one. The correct specific name of this species seems to be inconspicuus Wagler,’ the description and probable locality pointing to this identification, and this name antedating pyrrhothorax Gould by eight years. Family SCOLOPACID.. GALLINAGO SOLITARIA Hodgson. Gallinago solitaria HopGson, Gleanings in Science, ITI, 1831, p. 238. One male of this handsome snipe was taken on December 10, 1895, in the Valley of Cashmere. “Iris dark brown; bill plumbeous, tip black; feet and legs pale yellowish green; toes black. Length, 124 inches.” HELODROMAS OCHROPUS (Linnzus). Tringa.ocrophus (err. typ.) LINN&%US, Syst. Nat., 10th ed., I, 1758, p. 149. Totanus ochropus TEMMINCK, Man. d’Orn., 1815, p. 420. One specimen in winter plumage, from the Valley of Cashmere. “Tris dark brown; feet and legs olive plumbeous; claws black; bill black, olive at base. Length, 94 inches.” TOTANUS TOTANUS EURHINUS, new subspecies. Chars. subsp.—Like true Totanus totanus, but very much larger. Description.—Type, male, adult, Cat. No. 162823, U.S.N.M.; Lake Tsomoriri, Ladak, 15,000 feet, July 29, 1897; Dr. W. L. Abbott. Above rufescent broccoli brown, the feathers everywhere with dark brown centers, the back more or less irregularly barred with the same; rump pure white, sparingly marked with brownish; tail and upper tail- coverts dull white, heavily barred with sepia brown, the terminal 1 Cat. Birds Brit. Mus., XXIV, 1896, p. 226. 2 Isis, 1829, p. 651. 208 portion of central tail-feathers buffy; wings fuscous, the innermost secondaries like the back and barred on exposed portions with dark brown; remainder of secondaries white, but pale brown on concealed bases; greater coverts white or grayish distally, brownish gray basally, and barred with sepia; median coverts brownish gray, barred with sepia; lesser coverts almost plain; lower surface white, more or less heavily marked throughout with sepia, these markings taking on throat and breast the form of broad streaks, on flanks, sides, and crissum of bars, and elsewhere of more or less irregular spots; lining of wing white, varied with brownish, except on axillars. The form of Totanus totanus' inhabiting Central and Eastern Asia, although seemingly identical with the European bird in color and mark- ings, is yet so much larger, particularly in length of wing, tail, and eul- men, that its separation as a subspecies appears to be warranted. All of the many names which the species possesses are without doubt exelu- sively applicable to the European bird, thus leaving the Eastern form without a name. The following table of millimeter measurements presents the difference between the two races: PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. Totanus totanus totanis. ess sy one . Exposed Middle. Sex. | Locality. Wing. Tail. einen Tarsus. a Female ........ lelEMMEey IMEC) Soconcaaoaaooesene 156 62 46 50 30 WMscccopasn|lsecas (Mime caomocsconsuueradsouaesade 158 64 39 44 28 Maller. ea saercal teres (OSB sas soscBarenpouEoanrans 152 65 41 45 30 Does esre sae COM RSA ee econ eects 151 62 40 41 29 AD Sosnoecay MMW) sosasdosoueDEuscodeoneEoss 150 G4 41 47 30 Average (5 specimens) -...-.----.----------.| 153.4 63.4 41.4 45.4 29.4 Totanus totanus eurhinus. Q : 5 ; Ex Chios Middl Sex Locality. Wing. Tail ee Tarsus. he © Female .-....--.. Kashgar, Turkestan ...-.......-- 160 69 44 44 28 ORGS ee Lake Tsomoriri, Ladak .....----- 170 67 51 51 32 Mia esses owe | ate COR sees ee ease ae omeaaee 160 65 44 47 30 DOE eae ealiaees a Oe SARS eI aps soma 163 | 67 47 45 31 Wosseanesn? HanléSWatlakesssseese eee eeeeeae 162 66 47 49 30 AV erase) (O) SPECIMENS) ) ss -(e)-ceeaee see eseeee 163 | 66.8 46.6 47.2 30. 2 | Four specimens of Totanus t. eurhinus, including the type, are in the present collection; three of these are from Lake Tsomoriri, Ladak, at 15,000 feet; the other from Hanlé, Rupshu, Ladak, 14,000 feet; and all are summer birds. ‘ Length of male, 114 inches; of female, 113 inches; bill black, orange brown at base beneath; iris dark brown; feet orange red; claws black.” Le 1 Scolopac totanus Linnzus, Syst. Nat., LOth ed., I, 1758, p. 145 (—Totanus calidris auct.). No. 1195. . BIRDS FROM CENTRAL ASIA—OBGERHOLSER. 209 Family ANATID A, QUERQUEDULA QUERQUEDULA (Linnzus) Anas querquedula LINN.£US, Syst. Nat., 10th ed., I, 1758, p. 126. Querquedula querquedula Batrp, Am. Journ. Sci. and Arts, XLI, 1866, p. 339, One apparently adult female, from Rupshu, Ladak, at 13,000 feet, September 9, 1897. ‘ Length, 16 inches.” The white of the throat is quite pure, but that of the posterior lower surface is decidedly grayish, as the bases of the feathers show through the overlaid white tips. CASARCA CASARCA (Linnzus). Anas casarca LINNEUS, Syst. Nat., 12th ed., III, App., 1768, p. 224. Casarca casarca ALLEN, Auk, XIII, 1896, p. 164. One adult female, from Tsokr Chumo Lake, Ladak, taken July 11, 1897. The plumage of this example is much worn, and the colors of back and head much bleached. ‘“ Bill and feet black. Length, 24 inches.” Family PHASIANID 4. PUCRASIA MACROLOPHA BIDDULPHI (Marshall), Pucrasia biddulphi MARSHALL, Ibis, 1879, p. 461. One example, from the Pir Panjal Range, Cashmere, at an altitude of 8,00) feet. This is an immature male, and is molting about the head. “Tris dark brown; feet leaden; claws dark leaden. Length, 184 inches.” LOPHOPHORUS REFULGENS Temminck. Lophophorus refulgens TEMMINCK, Pig. et Gall., II, 1813, p. 355. One adult male from near Bandipoor, Cashmere, October 6, 1895. “Length, 294 inches; weight, 65 pounds.” TETRAOGALLUS TIBETANUS Gould. Tetraogallus tibetanus GOULD, Proc. Zool. Soc. Lond., 1853, p. 47. One adult male, from Takalungla, Ladak, at the remarkable altitude of 17,000 feet. ‘Feet brick red; claws dark horn brown; orbital skin dull orange; iris dark brown; bill horny orange.” Family COLUMBID. COLUMBA RUPESTRIS PALLIDA Rothschild and Hartert. Columba rupestris pallida ROTHSCHILD and HARTERT, Ornith. Monatsber., I, 1893, p. 4. Three specimens from Ladak: two of these are from Gya, at 14,000 feet, the other from Hanlé Goupa. “Bill black; cere powdery white; feet red, claws blackish horny; iris, male. orange red; female, brick red. Prov. N. M. vol. xxii——14 2910 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Common about villages and cultivation [Gya]; common throughout Rupshu up to 16,000 and 17,000 feet. It comes picking around the camps and sheepfolds of the Champas.” These examples are identical with others from Cashmere and the Thian Shan Mountains previously obtained by Dr. Abbott, and recorded by Dr. Richmond as true rupestris.' They are, however, undoubtedly referable to Columba r. pallida, exhibiting all the characteristics of that race. TURTUR SURATENSIS (Gmelin). Columba suratensis GMELIN, Syst. Nat., I, 1788, p. 778. Turtur suratensis STRICKLAND, Proc. Zool. Soc. Lond., 1842, p. 168. One adult male, from the Valley of Cashmere. ‘Iris dull red; bill black; feet livid purple; length, 113 inches.” Family VULTURID. GYPS HIMALAYENSIS Hume Gyps himalayensis HUME, Rough Notes, I, 1869, p. 14. Two specimens accompanied by the following data. ‘Male, Lolab, Cashmere, November 3, 1895; 8,000 feet. Iris mottled brownish gray; bill pale greenish horn; cere dark gray horn; bare skin on throat pale blue; feet pale greenish; claws blackish. Length, 463 inches; extent, 110 inches; weight, 21 pounds.” ‘‘ Female, Sind Valley, Cashmere, December 13, 1895; 6,000 feet. Iris dark brown; bill pale greenish horny (like jade); cere horny blachish brown; bare skin of head pale blue; feet pale greenish slate color; claws black. Length, 46 inches; extent, 107 inches; weight, 19 pounds.” The male seems to be adult, although the crop patch is quite dark brown instead of whitish fawn color; the female, judging from the darker colors on the upper parts, appears to be more or less immature. Family FALCONID A. CERCHNEIS TINNUNCULA INTERSTINCTA (McClelland). Falco interstinctus MCCLELLAND, Proc. Zool. Soc. Lond., 1839, p. 154. Two adult males of this handsome falcon: one from Zogila Pass, Cashmere, at 10,500 feet; the other from Machalung, Indus Valley, Ladak. The latter specimen is a bird in process of molt (September 17). ‘Its stomach contained lizards.” Specimens of the kestrel from Cashmere and Ladak are much darker, particularly above, than those from Europe, and should apparently bear the subspecific name interstincta McClelland. This race was originally described from specimens obtained in Assam, and it undoubtedly occu- ‘Proc. U.S. Nat. Mus., XVIII, 1896, p. 587. No. 1195. BIRDS FROM CENTRAL ASIA—OBERHOLSER. 911 pies at least the whole of the Himalaya region, with very probably a large part of India. Birds from the Thian Shan Mountains and east- ern Turkestan are, however, paler, and apparently must be referred to the European form. FALCO PEREGRINUS Tunstall. Faleo peregrinus TUNSTALL, Orn. Brit., 1771, p. 1. Three specimens, all from the Valley of Cashmere. “Iris dark brown; bill horny blue, black at tip, greenish yellow at base; cere and eyelids yellow; feet yellow; claws black. Length of male, 16} inches; of female, 184 inches; weight of female, 25 pounds. Crop and stomach of latter contained the remains of a teal.” One of these examples, which is apparently not quite adult, is darker above than the others, with the markings below larger as well as more numerous, and with a conspicuous tinge of ochraceous on the abdomen. There seems to be little or no difference between similar plumages of the birds from Asia and Europe. Our limited materia indicates that European specimens are less bluish above and darker on the head; but this distinction very possibly would not prove constant in a larger series. The Falco peregrinus of Tunstall, as above quoted, is apparently the earliest available name for the peregrine falecn, being 17 years prior to Gmelin’s names. Most of the new specific designations in Tunstall’s Ornithologica Britannica are mere nomina nuda, but some, among them Falco peregrinus, have references to Pennant’s British Zoology, and are thus rendered tenable. MILVUS GOVINDA Sykes. Milvus govinda SyKEs, Proe. Zool. Soc. Lond., 1832, p. 81. One adult male from the Valley of Cashmere, December 4, 1895. “Iris brown; bill black, horny blue at base; cere pale horny; feet dirty white; claws black. Length, 244 inches.” HALIAZETUS LEUCORYPHUS (Pallas). Aquila leucorypha PALLAS, Reis. Russ. Reichs, J, 1771, p. 454. Haliaetos leucorypha KEYSERLING and Buiastus, Wirb. Eur., 1840, p. xxx. Two specimens; one of them a male from the Hanlé River, Rupshu, Ladak, taken September 2, 1897. ‘‘Length,505 inches. Poisoned while feeding on the dead careass of a wild ass (Kiang).” The other example is a female from Woolar Lake, Vale of Cashmere, September 16, 1895. “Tris brownish gray; bill dull black; cere and base of bill grayish white; feet dirty white; claws black. Length, 314 inches. Feeds on dead fish and carrion; foully dirty.” The plumage of the female has much ochraceous, the tips and edges of the feathers everywhere being more or less tinged with either this BMP PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. color or fulvous, darkest on the head and neck. The breast and abdo- men are quite uniform ochraceous, the throat darker, more fulvous, the erissum more brownish; the tail is almost plain blackish brown, mot- tled somewhat with grayish near its base. The male is far from being so deeply ochraceous above, the edgings on the feathers of back and wings being whitish or buffy, producing a curiously mottled appear- ance, and forming thus a conspicuous contrast to the plumage of the female. Below the color is pale dull brownish, lighter and more ochra- ceous on the abdomen and foreneck, darkest on the throat; tail black, slightly tipped with whitish, and with a broad ill- defined nee of rife gray and dull white across Hg middle portion. HALIZZETUS ALBICILLUS (Linnzus). Falco albicilla Linnaus, Syst. Nat., 10th ed., I, 1758, p. 89. Haliwetus albicilla LEacu, Syst. Cat. M. B. Brit. Mus., 1816, p.9. ‘Iwo specimens, both taken in the Vailey of Cashmere, on December 19, 1895. ‘Male: Iris straw color; feet yellow; claws black. Length, 324 inches; weight, 8 pounds. Stomach contained remains of a green woodpecker (Gecinus squamatus). Female: Iris straw color; bill and ‘cere horny yellow; feet yellow; claws black. Length, 343 inches; weight, 10 pounds. Crop contained a thrush (Jerula); stomach con- tained remains of thrushes and rats.” Both of these specimens seem to be fully adult, their tails white ds. tally, except for small dusky markings near ake ends of the feathers. The many light tips, and some altogether paler feathers on both upper and lower parts, give to the plumage in places a conspicuously mottled appearance. These individuals appear to be perfectly identical with one from Korea. AQUILA BIFASCIATA J, E. Gray. Aquila bifasciata J. E. Gray, Hus. Ind. Zool., I, 1832, pl. x v1. Three specimens, all females, taken in the Valley of Cashmere, December 20 and 22, 1895. “Iris dark brown; bill horny blue, tip black; gape, cere, and feet yellow; claws black. Length, 31-32 inches; weight, 74 pounds. This species is very common in the valley at this season, and is very tame, sitting on the trees in the villages, probably because rats are plentiful near the houses. The stomachs of two of the birds taken contained remains of Mus rattus.” Two of the present examples are apparently typical adults, one of them evidently in process of molt both above and below. The remain- ing specimen is seemingly immature, being darker than the others, particularly on scapulars, wing-coverts, head, and under surface, while the primary-coverts as well as the greater series lack any indication of the paler tips characteristic of the adult. In this condition Aquila bifasciata superficially much resembles A. chrysaétos, but is everywhere paler; has fewer light fulvous feathers on occiput and nape; and the No. 1195. BIRDS FROM CENTRAL ASTA—OBERHOLSER. 213 light ashy bars on the tail extend throughout, not leaving a broad band of black at the tip. The present writer is quite inclined to agree with Dr. Sharpe in his identification ' of the present species with the Aquila mogilnik of S. G. Gmelin;? but it is perhaps better, particularly in view of the confusion existing through diversity of opinion, to abandon entirely the use of Gmelin’s name, simply considering it unrecognizable—the course so strongly urged by Mr. Blanford.? The proper name for the steppe eagle will, of course, in such event be Aquila bifasciata Gray. AQUILA HELIACA Savigny. Aquila heliaca SAvIGNyY, Descr. de ’ Egypte, 1809, p. 459, pl. x1. > Four specimens, all from the Valley of Cashmere, and taken in De- cember, 1895. ‘““Nemale adult: Iris gray, mottled with brown spots; bill horny blue with black tip; cere dull horny yellowish white; feet yellow; claws black. Length, 32 inches; weight, 8} pounds. Crop and stomach filled with the remains of Mus rattus. ‘Female adult: Iris gray, mottled with brown; bill horny blue, tip black; cere dull horny yellow; feet pale dirty yellow; claws black. Length, 324 inches; weight, 94 pounds. Stomach contained remains of mongoose (Herpestes auropunctatus). “Immature [sex not given, but probably male]: Iris straw color, mottled with brown on lower half; bill horny blue, black at the tips; cere horny white, with a greenish tinge; toes pale yellow; claws black. Length, 31 inches; weight, 54 pounds. ‘‘Kemale immature: Iris brownish gray; bill horny blue, the tip black; cere horny yellow; feet yellow; claws black. Length, 31? inches; weight, 7 pounds. Stomach contained remains of a grebe (Podiceps).” In the two immature birds the dark streaking below is confined to the jugulum, breast, and upper abdomen; in the supposed male it is quite narrow, but in the female is so broad as to be in many places confluent. BUTEO FEROX (Gmelin). Accipiter feroz 8. G. GMELIN, Nov. Comm. Ac. Sci. Imp. Petrop., XV, 1771, p. 442, Dex Buteo ferox CABANIS, Journ. f. Ornith., 1854, p. 260. Highteen specimens of this very interesting bird were secured by Dr. Abbott, all but one of them in the Vale of Cashmere. The series con- tains no two individuals exactly alike, and represents apparently almost if not quite all the principal variations of plumage to which the species ‘Cat. Birds Brit. Mus., I, 1874, p. 240. 2Noy. Comm. Acad. Sci. Imp. Petrop., XV, 1771, p. 445, pl. x1 b 3 Ibis, 1894, pp. 283-286. 914 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. is subject. In view of this, it seems well to present a brief description of each example, to ation are also added, as of interest, the original label notes of the collector. a. Male adult, December 4,1895. Very dark above and below; no light spots on abdomen or thighs; some rufous streaks on throat, also on nape; tail very dark, with no broad subterminal bar, the light inter- spaces on central feathers so dark that the bars are but slightly indi- cated. “Bill black, bluish at base; cere yellowish green; gape yellow; } | eireilalt irides pale brownish gray ; feet yellow; claws black. Length, 234inches; — weight, 30 ounces. Stomach full of small frogs and grasshoppers; crop contained 17 small frogs and 1 grasshopper. Thin and in poor con- dition.” b. Male adult, December 7, 1895. Very dark, with no spots on abdo- men or thighs, but rich rufous edgings on the feathers of breast, lower abdomen, and under tail-coverts; nape black and white with rufous Streaks on sides; tail with very light gray, almost white, interspaces. ‘ Bill black, pale horny at base; gape yellow; cere orange yellow; feet yellow; claws black; irides dark brown. Length, 214 inches. Exces- sively fat.” ce. Male adult, December 22, 1895. Somewhat like Jb, but much lighter below, with buffy streaks on throat and breast; light interspaces of central rectrices dirty gray. ‘Bill black, base horny blue; cere yel- lowish green; feet yellow; claws black; irides brown. Length, 22 inches; weight 32 ounces. Stomach contained frogs.” Very fat. d. Male adult, December 23, 1895. Very dark above and below, like a, but abdomen relieved by a few whitish spots on the sides of the feathers; some whitish mottlings on back and scapulars; a little more rufous on head and nape, some also on throat and breast;: light inter- spaces on tail feathers paler and grayer; tail with a broad blackish subterminal band. ‘Bill black at tip, base horny blue; cere greenish yellow; gape and feet yellow; claws black; irides dark brown. Length, 22 inches.” : e. Male adult, December 27, 1895. Much like c, but rufous on throat and breast decidedly darker; more of rufous on crown and a wash of the same color on upper tail-coverts; gray interspaces of tail light, and the black bars broken. ‘‘ Bill black, its base horny blue; feet yellow; claws black; cere horny yellow; irides dark brown. Length, 21 inches; weight, 34 ounces.” f. Female adult, December 3, 1895. Throat, breast and nape rufous, the throat variously mottled; feathers of thighs, abdomen and lower breast with large whitish spots on each side of shafts; upper tail- coverts blackish, with two to three rows of whitish gray bars; tail dirty gray, with transverse markings of black. ‘“ Bill horny black, horny blue beneath; cere yellowish green; feet dull yellow; claws black; irides hair brown. Length, 232 inches: weight. 2? pounds. Excess- ively fat.” No. 1195. BIRDS FROM CENTRAL ASTA—OBERHOLSER. 215 g. Female adult, December 19, 1895. Almost like /, but having con- siderable rufous mixed with the gray of the tail, and the interrupted bars on upper tail-coverts pale rufous instead of grayish white. “Bill black, base horny blue; gape yellow; cere horny yellow; irides dark brown. Stomach contained frogs. Length. 2345 inches.” h. Female adult, December 19, 1895. Very dark, like b, but with less rufous on lower parts; under tail-coverts broadiy tipped with ochra- ceous; tail much darker gray on light interspaces, with here and there some tinge of rufous. ‘ Bill black, base horny blue; gape yellow; cere horny yellow; irides dark brown. Length, 234 inches. Stomach con- tained remains of frogs.” a. Female adult, December 19, 1895. Similar to b, but lighter rufous on throat, breast, and abdomen, mottled by lighter tips to the feathers; tail with a rufous tinge in places, the dark bars on central feathers almost V-shaped. ‘Bill black, the base horny blue; feet yellow; claws black. Length, 23 inches. Stomach contained frogs.” j. Female adult, December 24, 1895. Resembling c, but with more rufous in the markings of the throat, breast, head, and nape; light interspaces of tail paler and more grayish, with a considerable admix- ture of rufous, the blackish bars much broken, the subterminal bar nar- row, the light terminal one very broad. ‘Bill black, the base horny blue; feet yellow; claws black; irides dark brown. Length, 24 inches, weight, 24 pounds.” k. Female adult, December 25, 1895. Almost like j, but with fewer spots on abdomen; dark tail bars not broken, and terminal light bar not very broad. ‘Bill black, the base horny greenish; cere dull horny green; feet yellow; claws black; irides dark brown. Length, 24 inches; weight, 3 pounds.” l. Male immature, December 3, 1895. Throat and breast mingled rufous and buff, but darker than in f/; abdomen and thighs with light Spots; nape mixed dark brown and buff; tail gray and rufous, with the black bars, excepting the subterminal one, much broken or obsolete, the two central feathers with blackish streaks on sides of shafts and broken crossbars on their outer borders. ‘Bill black, horny blue at base; gape yellow; cere greenish; feet yellow; claws black; irides hair brown. Length, 214 inches; weight, 2 pounds.” m. Male immature, Sind Valley, Cashmere, at 6,000 feet, December 12,1895. Light below, but with a motted band of dark rufous across the middle of under surface, the brown and rufous markings darker and heavier than in 0; thighs very deeply colored, the feathers with rufous margins; inferior tail-coverts buffy, with some rufous markings; cen- ter of nape with a patch of black, encircled by buff-bordered brown feathers; rump, black and upper tail-coverts blackish, the two last with light rufous tips to the feathers; scapulars dark, with buffy and rufous edgings; tail with some rufous touches on all the feathers, the dark bars wavy and irregular. ‘Bill black, horny blue at base; cere yel- 216 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. lowish green; gape yellow; feet yellow; claws black; irides dark brown. Length, 213 inches.” n. Male immature, December 25, 1895. Almost exactly like p, but forehead very dark; under tail-coverts nearly all rufous; gray of tail replaced wholly by rufous; black tail bars very much broken, and to some extent obsolete, the subterminal black bar narrow. “Bill black, bluish horny at base; cere dull horny green; feet yellow; claws black; irides dark brown. Length, 202 inches; weight, 34 ounces. Crop full of frogs.” o. Female immature December 8, 1895. Very pale buff below, with hair-like shaft lines on throat, wider streaks on breast, and still broader markings of brown on sides of abdomen; much reddish brown on thighs; under tail-coverts buffy white; upper parts light sandy brown, the feathers with dark centers and yet darker shaft lines; superior tail- coverts with a slight tinge of rufous; tail dusky gray, with lighter interspaces and no broad subterminal dark bar. “ Bill black, blue at base; cere and gape pale yellowish green; feet yellow; claws black; irides pale straw color. Length, 23%inches. Stomach contained remains of a large rat (Neosocia bengalensis).” p. Female immature, December 18, 1895. Under parts with a strong wash of rusty; throat and breast with narrow streaks of dark brown, and larger markings on abdomen; thighs and sides of body very dark brown, the feathers bordered with rufous; nape with a black and rusty spot; back and head deep brown, most of the feathers with broad margins and tips of buffy, though some with rufous edgings; upper tail-coverts dark brown, the feathers with ochraceous tips; tail with a considerable rufous wash, the dark bars nearly obliterated on the central and on some of the lateral rectrices. ‘ Bill black, base horny blue; cere greenish; feet yellow; claws black; irides brown. Length, 24 inches. Stomach contained remains of mice.” q. Female immature, December 22, 1895. Very light below, like a, but brown spots on abdomen heavier and more numerous; tail much lighter, with its dark bars narrower and with no broad subterminal bar. ‘ Bill black, base horny blue; cere pale yellowish green; gape dull yellow; feet yellow; claws black; irides grayish white. Length, 24 inches; weight, 34 ounces. Stomach contained remains of frogs and mice.” ry. Female immature, December 24, 1895. Rufescent below, as in p, but streaks on throat broader; breast and abdomen with conspicuous dark spots; thighs very dark; top of head deep brown, but nape light; upper tail-coverts with broad rufous tips, as in p; light interspaces on tail grayish white with very little rufous, the dark bars almost V-shaped. ‘ Bill black, base horny blue; cere dull horny green; feet yellow; claws black; irides pale mottled brown. Length, 26 inches; weight, 3 pounds. Stomach contained a mouse.” The changes of plumage in this species are not a little puzzling. No. 1195. BIRDS FROM CENTRAL ASTA—OBERHOLSER. Dalek There seem to be, however, four principal phases: One in which the lower parts are very light colored, with little or no rufous, and with comparatively inconspicuous streaking; another, in which the under surface has more rufous, is much streaked anteriorly and barred or mottled posteriorly; a third, in which the entire lower surface is almost without obvious streakings, being rufous on throat and breast and dull brown on the hinder portions; and a fourth, in which the whole plumage above and below is almost uniform sooty brown. Connecting these sev- eral places there exists an almost unbroken series of intermediates. Doctor Sharpe considers that the last-mentioned condition is the very old bird,! and that each individual is very light when young, gradually darkening with advancing years. The present series of specimens offers much to corroborate this theory, and very little, if indeed any- thing, tooppose. The birds in the first of the above-mentioned phases, are without any doubt very young, and those of the last two are just as unquestionably adults. Those uf the second phase are not so satis- factorily determinable, but they seem to be in a transition state, although how many years are required to assume this plumage must still, of course, be a matter of conjecture. Were any of the darkest specimens young birds they would easily establish a case of dimorphism very similar to that of the American Buteo swainsoni, to which, in its various phases of plumage, the present species bears no slight resemblance. Without such examples, however, it seems premature to advance this hypothesis as more than a suggestion, and in the light of our present knowledge we must regard the various differences of plumage as the result of age. Only one individual of this series has a completely red tail, though several have a greater or less tinge of rufous. The old adults, as also the very young birds, appear not to have a rufous tail; so that unless we are in error as to the sequence of plumage, the rufous tail belongs, rather curiously, to a transition stage. In some conditions of plumage the present species is very difficult to distinguish from Buteo desertorum, but the larger size of the former will usually serve for identification. ACCIPITER NISUS (Linnzus). Falco nisus LINN US, Syst. Nat., 10th ed., I, 1758, p. 92. Accipiter nisus PALLAS, Zoogr. Rosso-As., I, 1826, p. 370. Two examples. One is an adult male from Sind Valley, Cashmere, at 6,000 feet altitude, taken December 14, 1895: ‘Iris and feet yellow; claws black; bill black, the base horny blue. Length, 134 inches.” The other is an immature female from Srinagar, Cashmere, December 30, 1895: “Tris yellow; bill black, horny blue at base; cere yellowish green; feet yellow with a tinge of green on tarsus; claws black. Length, 153 inches. Stomach contained the remains of small birds. This hawk was pursuing a jackdaw when shot.” ‘Cat. Birds Brit. Mus., I, 1874, p. 177. 218 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. The male is in fully adult plumage, and the rufous bars on the breast are so broad as to be in places confluent. It is darker above than a specimen from Egypt, but the present series indicates this difference to be individual rather than geographical. CIRCUS CYANEUS (Linnzus). Falco cyaneus LINNZUS, Syst. Nat., 12th ed., I, 1766, p. 126. Circus cyaneus BOIL, Isis, 1822, p. 549. One fine adult male of this pretty hawk was secured by Dr. Abbott in the Sind Valley, Cashmere, December 11, 1895. “Iris golden yellow; bill black, lower mandible horny blue at base; cere yellowish green; lees bright yellow; claws black. Length, 183 inches. Stomach and crop contained the remains of a thrush.” . Family BUBONIDA. SYRNIUM ALUCO BIDDULPHI (Scully). » Syrnium biddulphi SCULLY, Ibis, 1881, p. 423. Syrnium aluco biddulpht RicHMOND, Proce. U.S. Nat. Mus., XVIII, 1896, p. 456. One adult female, from “north of the Vale of Cashmere,” at 7,060 feet altitude, October 26, 1895. ‘Claws dull black; bill pale waxy ereen, the cere slightly darker. Length, 183 inches. Crop contained remains of a species of thrush (Jerula) and of some mice.” BUBO BUBO TURCOMANUS (Eversmann). Strix turcomana EVERSMANN, Add. Pall. Zoogr. Rosso-As., I,-1835, p. 3. Bubo bubo turcomanus RICHMOND, Proc. U.S. Nat. Mus., XVIII, 1896, p. 455. One adult male from the Valley of Cashmere, December 27, 1895. ‘Iris golden yellow; bill black; cere dull blackish horny; claws horny black. Length, 224 inches; weight, 3$ pounds. Stomach contained some mouse hair.” Family ALCEDINID Zi. ALCEDO ISPIDA Linneus. Alcedo ispida LINNEUS, Syst. Nat., 10th ed., I, 1758, p. 115. An immature male from the Valley of Cashmere. ‘Bill black; iris dark brown; tarsi and soles of feet dull red; upper surface of toes brown. Length, 6Z inches.” There seem to be absolutely no characters even subspecifically to distinguish Alcedo bengalensis from A. ispida. Family PICID 4. GECINUS SQUAMATUS (Vigors). Picus squamatus ViGorRS, Proc. Zool. Soc. Lond., 1830, p. 8. Gecinus squamatus GRAY, Genera Birds, II, 1846, p. 438. Two adult specimens in perfect plumage: one from the Valley of Cashmere, the other from The Lolab, Cashmere, at 8,000 feet. ‘‘ Upper No. 1195. BIRDS FROM CENTRAL ASIA—OBERHOLSER. 219 mandible horny brown at base, tip yellow; lower mandible yeilow; feet dull olive; iris in two zones, inner zone red, outer pinkish white. Length of male. 134 inches; female, 14 inches.” Family ALAUDID 2. CALANDRELLA ACUTIROSTRIS Hume. Calandrella acutirostris HUME, Lahore to Yarkand, 1873, p. 265. Two specimens, from Bazgo plain, Ladak, 11,000 feet. “Tris dark brown; bill dark horn-brown above, yellowish at base beneath; feet brownish fleshy; claws pale horn-brown. Common on this plain, in pairs.” These examples are identical with those previously collected by Dr. Abbott in Ladak and Tagdumbash Pamir but recorded by Dr. Richmond as tibetana.' From Calandrella brachydactyla and dukhunensis both acutirostris and tibetana may readily be distinguished by the absence of deep buffy tinge in the edgings of the exterior webs of the outermost tail-feathers. Aside from the shape of the bill, a differential character apparently quite unreliable by reason of the great range of individual variation, tibetana may be separated from acutirostris by the pattern of the outer pair of tail-feathers. In the former species the whole feather is white excepting the basal third of the inner web and the extreme base of the outer, which are obliquely blackish; in acutirostris the inner web of the outer tail-feathers is largely blackish, the white occupying a diago- nally terminal area equal to only about a fourth of the inner vane and one-half the outer. Dr. Richmond’s inability satisfactorily to dis- tinguish from tibetana the specimens he records as acutirostris® is explained by the fact that he had no examples of tibetana, those with which he made his comparison as such being all acutirostris. ALAUDA ARVENSIS LEIOPUS (Hume). Alauda leiopus HUME, Stray Feathers, I, November, 1872, p. 40. Two breeding males from Shooshot, Indus Valley, Ladak, at 10,000 feet. Dr. Abbott reports them as “very common in the cultivated fields.” These specimens do not differ from those obtained by Dr. Abbott in Cashmere. Owing to the unfortunate confusion which at present exists among the races of Alauda arvensis, any determination must of necessity be largely tentative; but so far as our series is indicative, the birds from eastern Asia are larger and have more slender bills than those from Cashmere and Ladak, the difference being apparently sufficient to war- rant subspecific separation. Dr. Richmond used the name Alauda 'Proc. U.S. Nat. Mus., XVIII, 1896, pp. 467, 579. 2Tdem., p. 579. 2?) PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. arvensis intermedia (Swinhoe)' for this race, considering it not to differ from the bird of eastern Asia, but stating that in the event of their sep- aration the name guttata of Brooks would be the proper one for the Cashmere form, since Alauda leiopus of Hodgson’? is a nomen nudum. Mr. Hume, however, in an article on the skylarks of India differenti- ates “the Leiopus type from Ladak, Thibet, and the higher Himalayan plateau generally ;”* giving a diagnosis, and identifying his bird—which he regards as the breeding form of the region mentioned—with leiopus of Hodgson. As Hume’s name antedates A. guttata of Brooks, and since it is a perfectly tenable one, notwithstanding the unavailability of A. letopus Hodgson, the skylark of Cashmere and Ladak should be called Alauda arvensis leiopus (Hume). OTOCORIS LONGIROSTRIS Moore. Otocorys longirostris Moors, Proce. Zool. Soc. Lond., 1855, p. 215, pl. cx1 (from the Gould manuscript). Three breeding birds from Ladak, taken, respectively, at Fotu-la Pass, 13,000 feet; Debring, Rupshu, 16,000 feet, and Tsokr Chumo Lake. Male: “Bill black, leaden beneath at base.” Female: ‘ Feet black, soles pale; bill dark horny, pale bluish horny beneath at base.” Family ENICURID 2s. ENICURUS MACULATUS Vigors. Enicurus maculatus ViGORS, Proc. Zool. Soc. Lond., 1830, p. 9. One handsome adult male, from Sind Valley, Cashmere, taken Decem- ber 17, 1895, at 6,000 feet altitude. ‘Iris dark brown; feet and claws white; bill black; length, 10% inches.” Family CRATEROPID AE. TROCHALOPTERON VARIEGATUM SIMILE (Hume). Trochalopteron simile HUME, Ibis, 1871, p. 408. Six specimens, from The Lolab and Lolab Valley, Cashmere, all taken at an altitude of 8,000 feet. They are exceedingly uniform in color, and present very strongly the subspecific characters of simile, the outer portions of the wing-quills and tail-feathers being clear gray with scarcely a suggestion of olive. ‘In length they range from 10 to 103 inches. Iris green; feet pale fleshy brown, or [in some] pale orange- brown; bill black.” 'Proc. Zool Soc. Lond., 1863, p. 89. 2JTcon. ined. in Brit. Mus., Passeres, pl. 293 (No. 728). ’Stray Feathers, I, November, 1872, p. 40. ‘No. 1195. BIRDS FROM CENTRAL ASTA—OBERHOLSER. 291 Family ACCENTORID A. ACCENTOR HIMALAYANUS Blyth. Accentor himalayanus BLYTH, Journ. As. Soc. Beng., XI, 1842, p. 187. Accentor altaicus BRANDT, Bull. Acad. St. Pétersb., I, 1843, p. 365. One young male, from Mya, on the Indus River, Ladak, at 13,000 feet. This bird is in first plumage, though wings and tail are full grown, and may be described as follows: Upper surface dull buffy ochraceous, rather more ashy on nape, darker on back; everywhere, except on upper tail-coverts, mottled with darker, these markings largest on back, duller and smaller on head and hind neck; tail fuscous, edged externally with chestnut; wings fuscous, with broad margins of chest- nut, the wing-coverts tipped with ochraceous; sides of head and neck dull brown mixed with ochraceous; a poorly indicated superciliary stripe of butty; chin buff, speckled with dusky; throat pale dull buff, thickly marked with blackish; breast and jugulum deep ochraceous, streaked with blackish; remainder of under surface plain buffy. * Length, 64 inches.” Though commonly known as Accentor altaicus, there seems to be no reason why the earliest name for this bird, Accentor himalayanus Blyth, should not be employed, since the original description is clearly perti- nent enough to be tenable. Family TURDID &. SAXICOLA PICATA CAPISTRATA (Gould). Saxicola capistrata GOULD, Birds Asia, 1865, Pt. 17. Saxicola picata capistrata RICHMOND, Proc. U.S. Nat. Mus., X VIII, 1896, p. 480. One adult male from Kargil, Ladak, taken June 23, 1897, at 8,000 feet, altitude. ‘Bill and feet black.” This bird is in rather worn plumage, particularly on the head, but is apparently quite a typical specimen. Intergradation with true picata makes necessary the trinomial desig- nation here employed. SAXICOLA OREOPHILA, new name. Saxicola montana GOULD, Birds Asia, 1865, Pt.17 (nec Koch). Seven specimens, all from localities in Ladak. Two of the three breeding males are from Gya, at 15,000 feet; the other is from Debring, Rupshu, at 16,000 feet, and all are in worn condition. An October male from Nurla, in the Indus Valley, at 10,000 feet, is in freshly molted plumage, and, besides having the black areas obscured by light tips to the feathers, is elsewhere on the body strongly tinged with isabella color, this particularly evident on the lower back, upper tail-coverts, 222 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XX. and under surface. Two of the three breeding females are from Gya, at 13,000 and 15,000 feet, respectively, and though in every other respect typical, have the throat and sides of the neck, not including the chin, dull brownish black, somewhat mixed with buffy, instead of the ordi- nary dull buffy. The third female is from Tsokr Chumo Lake, at 15,000 feet altitude; the collector’s note on the label, “bill, feet, and claws black,” is applicable to both males and females. The name Savicola montana Gould, currently used for this stone chat, is preoccupied by Saxicola montana Koch,' which is Monticola saxratilis Linnzeus; and as there are no synonyms, the new name above given becomes necessary. PHGNICURUS ERYTHRONOTUS (Eversmann). Sylvia erythronota EVERSMANN, Add. Pallas’ Zoogr. Rosso-As., II, 1841, p. 11. Phonicurus erythronotus RICHMOND, Proc. U.S. Nat. Mus., X VIII, 1896, p. 482. One female in perfect fall plumage, from the Valley of Cashmere. “Bill and feet black.” PETROPHILA CYANA (Linnzus). Turdus cyanus LINN.XUS, Syst. Nat., 12th ed., I, 1766, p. 296. -One adult male, in every respect apparently typical of this form, from Saspul, Indus Valley, Ladak, at 10,000 feet. ‘Bill, feet, and claws black; inside of mouth yellow.” The specimens recorded by Dr. Richmond in his paper on Cashmere birds’? were, by inadvertence, entered as Petrophila solitaria. The very long wings appear sufficiently to distinguish the genus Petrophila from Monticola. MOTACILLA ALBOIDES Hodgson. Motacilla alboides HODGSON, Asiat. Researches, XIX, 1836, p. 191. Motacilla hodysoni HODGSON, in Gray’s Zool. Misc., 1844, p. 83 (from the Blyth manuscript). Three specimens. ‘Two of these, an adult male and female in breed- ing plumage, are from Saspul, Indus Valley, Ladak, at 10,000 feet. Dr. Abbott’s notes are: “Iris dark brown; bill and feet black. The commonest wagtail hereabouts. In pairs; often on stony hillsides quite a distance from water.” The third example is a winter male, with white chin, taken in the Valley of Cashmere. ‘ Length, 72 inches.” Mr. Hodgson’s Motacilla aiboides has priority over the same author’s M., hodgsoni, and as his original description of alboides without doubt 2 Proc. U.S. Nat. Mus., X VIII, 1896, p. 488. No. 1195. BIRDS FROM CENTRAL ASIA—OBERHOLSER. 223 Family SYLVIID 4. PHYLLOPSEUSTES HUMEI (Brooks). Reguloides humet BRooks, Stray Feathers, VII, 1878, p. 131. Phyllopseustes humii RICHMOND, Proc. U. 8. Nat. Mus., XVIII, 1896, p. 476. One specimen from Leh, Ladak, 11,000 feet. ‘‘ Length, 48 inches.” This is a fall bird, differing from a similar example from the Thian Shan Mountains in being more brownish on the head, rump, and under parts, this probably an indication of immaturity. PHYLLOPSEUSTES AFFINIS (Tickell). Motacilla ofinis (err. typ.) TICKELL, Journ. As. Soc. Beng., IT, 1833, p. 576. Phyllopseustes affinis RICHMOND, Proc. U. 8. Nat. Mus., X VIL, 1896, p. 475. One example, September 11, 1897, from Mya, Indus River, at 12,500 feet, is probably a bird of the year. The entire body plumage is noticably paler than in two breeding birds from Cashmere. PHYLLOPSEUSTES TRISTIS (Blyth). Phylloscopus tristis BhyTH, Journ. As. Soc. Beng., XII, 1843, p. 966. Phyllopseustes tristis MEVES, Journ. fiir Orn., 1875, p. 430. Two perfectly typical breeding males; from Nimu, Indus Valley, and Shergol, Ladak, respectively, both taken at an altitude of 10,000 feet. “Feet brownish black; bill black, fleshy horn brown at base beneath.” Family CINCLID. CINCLUS ASIATICUS Swainson. Cinclus asiaticus Swainson, Faun. Bor.-Amer., IT, 1831, p. 174. One example, from the Sind River, Cashmere, taken at 6,000 feet. “Length, 83 inches.” Not in any way different from Ladak specimens. The name Cinclus asiaticus Swainson, as above cited, is a nomen nudum; but as there remains some doubt about the proper designation of the species, no change is here made. CINCLUS CINCLUS CASHMERIENSIS (Gould). Cinclus cashmeriensis GOULD, Proc. Zool. Soc. Lond., 1859, p. 474. Cinclus cinclus cashmeriensis RICHMOND, Proc. U. 8. Nat. Mus., X VIII, 1896, p. 488. One specimen, from Gya, Ladak, at 13,000 feet. ‘Front of tarsi and top of toes lead color, rest of feet dull black; bill black. Length, 8 inches.” The head and cervix are of a warmer brown than in winter Specimens, and the feathers of the flanks and sides lack entirely the whitish edgings of the latter season. 224 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXI. Family FRINGILLIDA. EMBERIZA CIA Linnzus. Timberiza cia LiNNALUS, Syst. Nat., 12th ed., I, 1766, p.510. Two specimens from Lamayuru, Ladak, taken June 26, 1897, at 12,060 feet altitude. ‘‘ Bill black, leaden beneath at base; feet pale fleshy brown, with a reddish tinge; claws dark horn brown.—Common on the bare stony hillsides and about villages up to 13,000 feet; always in pairs at this season.” These birds are typical cia, not stracheyi, which Dr. Richmond sur- mised! to be the breeding form of the region. EMBERIZA LEUCOCEPHALA Gmelin. Emberiza leucocephalos GMELIN, Nov. Comm. Acad. Sci. Imp. Petrop., XV, 1771, p. 480, pl. xxi, fig. 3. A pair of winter birds from the Valley of Cashmere. ‘ Upper man- dible dark horny brown, lower mandible horny blue; feet pale fleshy brown. Length of male, 74 inches; female, 62 inches.” CARPODACUS SEVERTZOVI Sharpe. Carpodacus severtzovi SHARPE, Proc. Zool. Soc. Lond., 1886, p. 354. Two breeding specimens from Upshi, Valley of the Indus, Ladak, at 11,000 feet. “Iris brown; bill pale brownish horny above, whitish horny beneath; feet in male black, in female dark fleshy brown.” Dr. Abbott notes that he found the species “in pairs on the stony hillsides.” CARPODACUS ERYTHRINUS (Pallas). Loxia erythrina PALLAS, Nov. Comm. Acad. Sci. Imp. Petrop., XIV, Pt. 1, 1770, p. 587, pl. xxi, fig. 1. Carpodacus erythrinus GRAY, Gen. Birds, II, 1844, p. 384. One male from Tashgam, Ladak. “Iris brown; upper mandible horny brown, lower mandible dull yellowish horny; feet fleshy brown; claws horn brown.” From the specimens available it is indicated that the birds of this region are entitled to subspecific recognition by reason of their decidedly brighter colors; but this material is too - meager to justify a formal separation. SERINUS PUSILLUS (Pallas). Passer pusillus PALLAS, Zoogr. Russo-Asiat., II, 1826, No. xliii, p. 28. Serinus pusillus BRANDT, Bull. Sci. Acad. St. Pétersb., I, 1843, p. 366. Two examples, from Shooshot and from Shergol, Indus Valley, Ladak, respectively, both taken at an altitude of 10,000 feet. ‘Iris ‘Proc. U. 8S. Nat. Mus., XVIII, 1896, p. 465. No. 1195. BIRDS FROM CENTRAL ASIA—OBERHOLSER. 225 dark brown; bill brownish black; feet dull blackish. In flocks of 10 or 12, feeding on ground on bare, stony hillsides.” These specimens agree perfectly with other adults, except that the bright patch on the forehead is orange instead of scarlet, a condition very probably due to the abrasion incident to the breeding season. PASSER DOMESTICUS INDICUS (Jardine and Selby). Passer indicus JARDINE and SELBY, II]. Orn., III, October, 1831, pl. 118. Passer domesticus indicus SEEBOHM, Ibis, 1883, p. 8. Two breeding specimens from Fotu-la Pass, Ladak, at an altitude of 12,000 feet. LEUCOSTICTE BRANDTI Bonaparte. Leucosticte brandti BONAPARTE, Consp. Av., I, 1850, p. 537. Three summer specimers from Ladak: two of these are from below the Kazuri-la, Ladak, at 16,000 feet, where Dr. Abbott reports the spe- cies aS occurring in small flocks on grassy areas; the third individual is from Gya, Ladak, at 14,000 feet. ‘Bill and feet black; iris dark brown.” MONTIFRINGILLA ALTAICA (Eversmann). Fringilla altaica EVERSMANN, Bull. Naturforsch. Gesellsch. Moscau, XXI, 1848, e219: nla sordida STOLICZKA, Journ. As. Soc. Beng., XX XVII, 1868, p. 63. One specimen from The Lolab, Cashmere. ‘Feet brownish black; iris pale brown.” An examination of the original description of Eversmann’s Fringilla altaica, which Dr. Sharpe stated! that he was unable to discover, proves beyond a doubt what was long ago affirmed by Severtzoff *— the priority of the name altaica for the species commonly called Montifringilla sor- dida (Stoliczka). Eversmann gives the southern Altai Mountains, “ Umgegend des Dorfes Uimon” as the locality; and his diagnosis is as follows: ‘ . rostro crasso conico; gastrwo fusco-cinereo, concolore; notco fusco-liturato, capite ferruginoso; rectricibus nigricantibus concoloribus. tectricibus caude superioribus apice lato albo.” Mention also is made of affinity to Leucosticte arctoa and Fringilla montifringilla. MONTIFRINGILLA ADAMSI Adams. Montifringilla adamsi ADAMS, Proc. Zool. Soc. Lond., 1858, p. 482 (from the Moore manuscript). Three examples from Ladak: Fotu-la Pass, 12,000 feet; Upshi, Indus Valley, 11,000 feet; and Phyang, Indus Valley, 11,000 feet. ‘Iris yel- lowish brown; bill, feet, and claws black.” 1Cat. Birds Brit. Mus., XII, 1888, p. 266 (footnote). 2Stray Feathers, I1I, 1875, p. 424: Ibis, 1883, p. 60. Proc. N. M, vol. xxii 15 JAG PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. LINARIA BREVIROSTRIS PYGMEA (Stoliczka). Linota pygmea STOLICZKA, Journ. As. Soc. Bengal, XX XVII, Pt. 2, 1868, p. 62. Five summer birds from Gya, Ladak, at from 13,000 to 14,000 feet. According to Dr. Abbott’s notes the color of the feet ranges from ‘dark fleshy brown” to black; and the bill is variously “ pale brown- ish fleshy,” ‘dull leaden,” or ‘“‘horny white,” always “ dark brown at tip.” “Length, male, 53 inches.” With regard to their habits he states: “In small flocks about the patches of cultivation and picking among the horse.droppings in the road.” These five specimens are exceedingly interesting, since they estab- lish beyond a doubt the validity of Linota pygmca Stoliczka, a form which has heretofore always been synonymized with JL. brevirostris.. Even casual comparison is sufficient to show that the two are at least subspecifically distinct. The original specimens of pygmea came from Chini and Padam, so that this form seems to be confined chiefly to Ladak; L. brevirostris apparently occupying the region extending from Asia Minor to Turkestan. The original wing measurement is smaller than that of the present examples, but, excepting this and a few other unimportant discrepancies, the original description of Linota pygmcea is perfectly applicable. From Turkestan and Tagdumbash Pamir specimens, which are assumed to be nearly or quite typical brevirostris, pygmea differs in being much darker, more fulvous throughout, this being most evident on jugulum, breast, and back. One individual is rather paler than the others, thus in a measure verging toward brevirostris and indicating its subspecific relationship, but is without difficulty distinguishable. The proper generic name for the linnets is apparently Linaria Bech- | stein,! this being almost thirty years prior to to Linota Bonaparte? which has been in frequent use for the group. Dr. Sclater, after showing Linaria to be the earliest name,* rejects it on account of previous employment in botany,* a course not in accord with current usage. CALLACANTHIS BURTONI (Gould). Carduelis burtont GOULD, Proc. Zool. Soc. Lond., 1837, p. 90. Callacanthis burtont BONAPARTE, Consp. Av., I, 1850, p. 507. One adult male, December 16, 1895, from Sind Valley, Cashmere, at 6,000 feet, differs from breeding males in the duller, more rosaceous tinge of the lower surface. ‘Bill horny yellow, brown at tip; feet pale brownish flesh color. Length, 74 inches.” 1Ornith. Taschenb., I, 1802, p. 121. 2Saggio Distr. Met. Anim., 1831, p. 141. 3 This, 1892, pp. 555 et seq. 4Tdem., p. 557. No, 1195. BIRDS FROM CENTRAL ASITA—OBERHOLSER. MAT PERISSOSPIZA'! ICTERIOIDES (Vigors). Coccothraustes icterioides ViGORS, Proc. Zool. Soc. Lond., 1830, p. 8. Pycnorhamphus icteroides HUME, Nests and Eggs Indian Birds, 1874, p. 469. One adult male in perfect plumage, from Sind Valley, Cashmere, at 6,000 feet. ‘Iris hair brown; feet fleshy pink; claws horny brown; bill green, slightly yellowish. Length, 9 inches.” The generic term Pycnorhamphus Hume,’ commonly applied to this and two allied species, is preoccupied by Picnoramphus Rosenberg,* a synomym of Sphecothera Vieillot, the difference in the spelling of the two names being simply one of transliteration. Since for Pycnorham- phus there is no other name available, it may be called as above—Peris- sospiza, from zepiooos, mirabilis, and ozita, fringilla. The remaining species of this genus will consequently stand as Perissospiza affinis (Blyth) and Perissospiza carneipes (Hodgson). Family HIRUNDINIDA. PTYONOPROGNE RUPESTRIS (Scopoli). Hirundo rupestris Scopout, Ann. I. Hist. Nat., 1769, p. 167. Ptyonoprogne rupestris REICHENBACH, Syst. Av., 1850, pl. LXXxviil, fig. 6. One specimen, June 29, 1897, from Spittak, Indus Valley, Ladak, at 10,000 feet. ‘‘Feet pale brownish fleshy; iris blackish brown; claws horn brown; bill dull black.” With a fair series of both Asiatic and European specimens at hand, no difference worthy of subspecific recog- nition is apparent. The generic term Biblis,’ commonly applied to the crag martins when they are distinguished from Riparia (=Cotile), is ineligible for use in this connection, being preoccupied in Lepidoptera by Biblis Fabricius.® The next available name is Ptyonoprogne Reichenbach,’ which should therefore stand as the proper designation of the group. DELICHON CASHMERIENSIS (Gould). Chelidon cashmeriensis GOULD, Proc. Zool. Soc. Lond., 1858, p. 356. Two specimens, taken July 4, 1897, at Upshi, Indus Valley, Ladak, 11,000 feet. ‘Iris dark brown; claws horn brown; bill black.” Dr. Abbott notes that one of these examples belonged to a large colony which was nesting in a bluff of conglomerate on the banks of the Indus. As Dr. Reichenow has already demonstrated,’ the generic term Cheli- !New name for Pycnorhamphus. 2Nests and Eggs of Indian Birds, 1874, p. 469. 3 Batavia Natur. Tijdschr. Neder]. Ind., X XIX, 1866, p. 143. 4Nouv. Dict. d’Hist. Nat., XXXII, 1819, p. 5. 5 Lesson, Compl. Buff., VIII, 1837, p. 495. 6 Tlliger’s Mag., VII, 1807, p. 281. 7 Syst. Av., 1850, pl. Lxxxvui, fig. 6. 8 Journ. f. Orn., 1889, p. 187. 228 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. don,' commonly employed for this and allied species, is clearly untena- ble, being preoccupied by Chelidon Forster,? which is a synonym of Hirundo Linneus. Delichon Moore® was proposed for the bird now known as Chelidon nipalensis, but as this species appears to be not generically distinct from C. urbica and its allies, the generic name Delichon must be used for all. The only alternative is to restrict Deli- chon to nepalensis and use Chelidonaria Reichenow* for the wurbica group.” Family PARIDA4. ZEGITHALISCUS NIVEOGULARIS (Moore). Orites (2?) niveogularis Moore, Proc. Zool. Soc. Lond., 1854, p. 140 (from the Gould manuscript). Aigithaliscus niveogularis JERDON, Birds Ind., II, 1863, p. 272. Four specimens of this handsome species, from the Sind Valley, Cash- mere, at 6,000 feet. ‘Length, from 44 to 43 inches,” the female being slightly smaller. ‘Iris dark brown; feet orange brown; bill black.” Family STURNID 2. STURNUS VULGARIS MENZBIERI (Sharpe). Sturnus menzbieri SHARPE, Ibis, 1888, p. 438. Sturnus vulgaris menzbiert RICHMOND, Proce. U. S. Nat. Mus., XVIII, 1896, p. 573. Two specimens from the Valley of Cashmere. ‘Iris blackish brown; feet dark purplish brown; bill black. Length of male, 9 inches; of female, 83 inches.” This is apparently an easily distinguishable race. Family CORVIDA. TRYPANOCORAX FRUGILEGUS (Linnzus). Corvus frugilegus LINNEUS, Syst. Nat., 10th ed., I, 1758, p. 105. Trypanocorax frugilegus LocuE, Explor. Sci. Algér., Ois., I, 1858, p. 118. Two adult males from the Valley of Cashmere, taken respectively on December 24 and 27, 1895. CORVUS CORAX Linnzus. Corvus corax LINNEUS, Syst. Nat., 10th ed., I, 1758, p. 105. One male, from the Hanlé River, Rupshu, Ladak, at 15,000 feet. ‘‘Leneth, 264 inches.” 1 Boie, Isis, 1822, p. 550. 2 Synop. Cat. Brit. Birds, 1817, p. 17. 3 Proc. Zool. Soc. Lond., 1854, p. 104. 4 Journ. f. Orn., 1889, p. 187. 5 Reichenow, Ornith. Monatsb., 1899, p. 81. NOTES ON SOME BIRDS FROM SANTA BARBARA ISLANDS, CALIFORNIA. By HARRY C. OBERHOLSER, Assistant Biologist, Department of Agriculture. During the spring and summer of 1892, Mr. Clark P. Streator, under the auspices of the Biological Survey of the Department of Agricul- ture, made a small collection of birds upon the Santa Barbara Islands, California. Of these specimens, which are now in the United States National Museum as part of the Biological Survey collection, the writer has been able, through the kindness of Dr. C. Hart Merriam, to prepare the subjoined list. The new forms obtained by Mr. Streator have already been described; so it remains only to record the species collected, with the addition of various critical notes upon those of special interest. The islands visited by Mr. Streator, with inclusive dates of his col- lecting, are as follows: Santa Catalina Island, April 9 to 29. San Miguel Island, June 24 to 29. Santa Rosa Island, July 1 to 3. Santa Cruz Island, July 9 to 20. PUFFINUS GRISEUS (Gmelin). A single specimen, taken July 3, in the Santa Barbara Channel, is in the collection. LOPHORTYX CALIFORNICUS VALLICOLA (Ridgway). One male and one female from Santa Catalina Island. They seem rather darker and more ochraceous than extreme examples of vallicola, but are identical with birds from the San Joaquin Valley. The species has probably been introduced from the mainland. COLAPTES CAFER (Gmelin). An immature specimen from Santa Cruz Island apparently does not differ from birds of the adjacent mainland, though the material at hand for comparison is not entirely satisfactory. PROCEEDINGS U. S. NATIONAL Museum, VOL. XXII—No. 1196. 229 230 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. ——-— er SIBILANSIE IS IQS OS ALLENI Henshaw. Two adult males in perfect plumage, from Santa Catalina Island are identical with Nicasio birds. SAYORNIS NIGRICANS (Swainson). Three birds from Santa Cruz Island are all immature, with rufous edgings to the feathers of lower back, under wing-coverts and all the upper series; the innermost secondaries are also margined with a paler shade of the same. Two adults taken on Santa THOSE Island add the species to the fauna of this island. EMPIDONAX INSULICOLA Oberholser. Five specimens; from Santa Rosa, Santa Cruz, and Santa Catalina islands; all mentioned in the original description of the species.! Since that was published, the writer, through the courtesy of Mr. Joseph _ Grinnell, has examined specimens from San Clemente Island, which are substantially identical with those from the other islands. OTOCORIS ALPESTRIS INSULARIS Townsend. Twelve examples from San Miguel Island and one from Santa Rosa are all in more or less worn plumage, but even in this condition exhibit the distinctive characteristics of this insular race. APHELOCOMA INSULARIS Henshaw. A fine series of twelve adults and five immature specimens serves very strongly to emphasize the distinctness of this species from both of its mainland relatives. Not only areits characters very pronounced, but among perfectly comparable examples there is relatively little individual difference either in size or color. Many of the adults are strongly tinged with brownish below, but this is undoubtedly an adventitious stain, as it is absent on feathers of the fresh plumage. All the adults are in process of molt and exhibit almost every stage of feather renewal. The immature birds are all in “ first” plumage, just beginning to change into perfect dress, and differ little from each other. The plumage of the young, which seems never to have been described, is as follows: Above chocolate brown, shading into dull dark blue on crown and upper tail-coverts, the transition on latter rather abrupt; wings and tail as in the adult; sides of head and neck blackish brown; a short ' whitish line over each eye, the only indication of a superciliary; chin, throat, and center of jugulum brownish white, the sides of jugulum and an almost complete collar on breast dull blackish brown; remainder of breast and abdomen smoke gray; crissum dark slate gray; thighs light brown. 1 Auk, XIV, 1897, p. 300. no.1196. BIRDS FROM SANTA BARBARA ISLANDS—OBERHOLSER. 231 CORVUS CORAX SINUATUS (Wagler). One individual from Santa Catalina Island appears to be indistin- guishable from typical specimens. STURNELLA NEGLECTA Audubon. Two specimens from San Miguel Island, one of them a female in the spotted and mottled plumage of the young. The other, an adult male in rather worn condition, seems not to differ from neglecta of the mainland. It seems remarkable that anyone who has ever heard the striking vocal performances of the western meadowlark should consider it a subspecies of the eastern bird. And when there is taken into account the fact that over a large area the breeding ranges of the two overlap, the birds there remaining as distinct as elsewhere, and that the sup- posed intermediate specimens ultimately resolve themselves into sea- sonal or some other equally nonpertinent variation, the rational course would appear to be the recognition of Sturnella neglecta as a full species. CARPODACUS MEXICANUS CLEMENTIS (Mearns). Fourteen specimens, from Santa Catalina, San Miguel, and Santa Cruz islands, are referable to this new race. The males differ much among themselves in the shade of the red on throat and breast, as well as in the extent and intensity of the red suffusion on the anterior upper surface, in some individuals this color being confined almost entirely to the crown. There is also a considerable range of variation in dimen- sions, inclusive of the bill, size being but an average subspecific dis- eae The specimens examined are darker above than obscurus = frontalis),' a SINE OEE not mentioned by Dr. Mearns in his original ae 2 Birds in the juvenal eannace. are much more ochraceous, particularly above, than adult females, and seem to be rather darker than the young of obscurus. This plumage of clementis appears not to have been described, and the following is therefore added, from a male shot on Santa Ona Island, July 18: Above dull brown, rather darker on the back, all the feathers with ochraceous margins, these imparting a somewhat streaked appearance; rump and upper tail-coverts almost plain deep ochraceous; wings and tail fuscous, edged with buffy, the wing-coverts and innermost second- aries margined with ochraceous; lores and subocular region buffy whitish; sides of head and neck ochraceous, streaked with dull brown; under surface dull white, washed with ochraceous and everywhere streaked with dull brown; crissum buffy ochraceous, with narrow shaft markings of brown. 1 See Oberholser, Auk, XVI, 1899, p. 186. 2 Auk, XV, 1898, p. 259. 9392 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. ZONOTRICHIA LEUCOPHRYS GAMBELI (Nuttall). A paie of adults from Santa Catalina Island. This is the race for- merly known as intermedia." SPIZELLA SOCIALIS ARIZONZ® Coues. Three specimens. Two of these are adults from Santa Catalina Island, and are in color and in most of their measurements apparently like the mainland form. The wings are, however, somewhat shorter, but the difference seems too slight to warrant the separation of the island bird. The third specimen, which is in the spotted plumage of the young, is from Santa Rosa, and appears to be the first record of the species for this island. MELOSPIZA MELODIA CLEMENT (Townsend). Kighteen specimens, including both adults and young, from the islands of San Miguel and Santa Rosa. The adults are in worn pluin-— age, but agree with examples from San Clemente Island, the type locality of this race. The young exbibit much more individual varia- tion than the adults, but on the whole present quite as good characters for subspecific distinction. This juvenal stage, as is usual among the song sparrows, is quite different in appearance from the adult, and may be described as follows: Above brownish gray, somewhat rufescent on the rump, the feathers with deep brown or blackish centers, these broadest on back, where they are margined conspicuously with pale grayish; head with no evident median stripe; wings and tail about as in the adult; sides of head and neck dull buffy white, considerably mixed with brown; lower parts dull buffy white; jugulum, sides of throat and body, with short streaks of brownish gray, less evident on the last. The species appears not to have been previously recorded from San Miguel Island. MELOSPIZA LINCOLNII (Audubon). A single adult female from Santa Catalina Island. The upper sur- face is rather more than usually tinged with ochraceous, as are also the posterior lower parts, thus almost obliterating the definition of the pectoral band. PASSERELLA ILIACA INSULARIS Ridgway. One adult from Santa Cataiina Island. PASSERELLA ILIACA MEGARHYNCHA (Baird). Three typical examples from Santa Catalina Island. peneesee —< 1 For change of name, see Ridgway, Auk, XVI, 1899, p. 36. no.1196. BIRDS FROM SANTA BARBARA ISLANDS—OBERHOLSER. 233 PASSERELLA ILIACA STEPHENSI Anthony. Although not recorded from any of the islands of the Santa Barbara group, three specimens from Santa Catalina Island are undoubtedly referable to this race, being of course migrants from the mainland, as all the other forms of Passerella seem to be. Two of these individuals are quite typical, the other verging somewhat toward megarhyncha. All have a considerable tinge of brown over the entire upper surface. PIPILO MACULATUS CLEMENT 4 (Grinnell). Three examples from Santa Cruz Island, with one from Santa Rosa, are in color like clementce, but differ in their somewhat smaller size. A single bird in juvenal plumage is very little different from the similar stage of megalonyx. Seven adults from Santa Catalina Island are intermediate between clemente and the mainland coast form (P. m. atratus) recently described by Mr. Ridgway, but seem to be nearer the former. LANIUS LUDOVICIANUS ANTHONYI Mearns. A single specimen in juvenal plumage is darker above than even ludovicianus of similar age. HELMINTHOPHILA CELATA SORDIDA Townsend. Hight males and two females were collected, all on Santa Catalina Island. This fine series bears out the characters assigned by Mr. Townsend, but shows also that these differences are not entirely con- stant. The olivaceous wash on the flanks is one of the best distine- tions. MIMUS POLYGLOTTOS (Linnzus). Three exainples from Santa Catalina Island show considerable indi- vidual variation in the shade of the upper surface, but appear to be absolutely indistinguishable from birds of the extreme eastern United States. They are quite brownish both above and below, but this is evidently due to wear or stain, perhaps to both. SALPINCTES OBSOLETUS (Say). The single specimen is from San Miguel Island and is not satisfac- torily distinguishable from mainland specimens. THRYOMANES BEWICKII CHARIENTURUS Oberholser. Five examples from Santa Catalina Island. The slight and very inconstant differences presented by the birds from this island as com- pared with typical charienturus have been already fully set forth in a previous paper,' and therefore need not be repeated here. 1 Proc. U.S. Nat. Mus., XXI, 1898, p. 436. 234 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXL. THRYOMANES BEWICKII NESOPHILUS Oberholser Ten specimens, from Santa Cruz and Santa Rosa islands. Al! tnese were recorded in the writer’s recent paper on the genus.' Since the appearance of that article additional material from Santa Cruz Island has been examined, substantiating former conclusions with regard to the validity of this form. It is certainly different enough from both charienturus and drymecus to warrant recognition as a subspecies. Two young birds from Santa Rosa are somewhat paler above than the young from Santa Cruz Island. HYLOCICHLA AONALASCHK (Gmelin). One perfectly typical female from Santa Catalina Island. 1 Proc. U.S. Nat. Mus., X XI, 1898, p. 448. CATALOGUE OF A COLLECTION OF BIRDS FROM MADA- GASCAR. By HARRY C. OBERHOLSER, Assistant Biologist, Department of Agriculture. During a period of some eighteen months, extending from July, 1894, to February, 1896, the Rev. James Wills formed a small collection of birds in Madagascar. He worked chiefly in Imerina, in the east central part of that island, most of the specimens coming from the various forests in the more or less immediate vicinity of that locality. These birds, numbering 110 and referable to 57 species, were eventually purchased by the United States National Museum. In the list which follows, the presence of the rare Lophotibis cristata and the little known Ardeola xanthopoda seems worthy of note. Pertinent remarks on the colors of the soft parts, which, whenever available, are added from the labels of the specimens, will be found between quotation marks Family COLYMBID 2. COLYMBUS PELZELNII (Hartlaub). Podiceps velzelniti HARTLAUB, Faun. Madagasc., 1861, p. 83. One adult, apparently in breeding plumage, from East Imerina, December, 1894. The specimen collected by Dr. Abbott on the River Mangoro, Mada- gascar, and recorded by Dr. Richmond! as Colymbus pelzelnii, proves to be not this species at all, but Colymbus capensis (Lichtenstein Family SCOLOPACID A. ACTITIS HYPOLEUCA (Linnzus). Tringa hypoleucos LINNZUS, Syst. Nat., 10th ed., I, 1758, p. 149. Actitis hypoleucos ILLIGER, Prodr., 1811, p. 262. One apparently immature bird from East Imerina, taken in Feb- ruary, 1896. 'Proc. U.S. Nat. Mus., XIX, 1897, p. 677. PROCEEDINGS U. S. NATIONAL Museum, VOL. XXII—No. 1197. 235 7 es 236 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. Family RALLID&. GALLINULA CHLOROPUS PYRRHORRHOA (Newton). Gallinula pyrrhorrhoa A. NEWTON, Proc. Zool. Soc. Lond., 1861, p. 19. Gallinula chloropus pyrrhorrhoa SIBREF, Ibis, 1892, p. 114. One specimen, April, 1895, from ‘‘ between the two forests,” East Madagascar. The ochraceous crissum seems to warrant at least the subspecific separation of the Madagascan form of Gallinula chloropus, although the occasional presence of this character in the typical bird indicates the inadvisability of according pyrrhorrhoa specific rank. Family ANATID i. NETTION PUNCTATUM (Burchell). Anas punctata BURCHELL, Travels S. Africa, I, 1822, p. 283 (note). Nettion punctatum SALVADORI, Cat. Birds Brit. Mus., XX VII, 1895, p. 265. Two specimens, seemingly male and female, though unsexed. The supposed female is of generally duller plumage than the male; the spots on neck, throat, jugulum, breast, flanks, and sides are larger and less sharply defined; the sides, together with the upper and lower tail coverts, lack almost entirely the wavy cross lines; and the inner sec- ondaries are only very slightly glossed with greenish. _ SAROTHRURA INSULARIS (Sharpe). Corethrura insularis SHARPE, Proc. Zool. Soc. Lond., 1870, p. 400. Sarothrura insularis STONE, Proc. Acad. Nat. Sci. Phila., 1894, p. 148. Two examples from Kast Imerina. One is apparently an immature male, differing from the adult of the same sex in the presence of much brownish olivaceous admixture on the posterior portion of the lower surface. DRYOLIMNAS CUVIERI (Pucheran). Rallus cuvieri PUCHERAN, Rev. et Mag. de Zool., 1845, p. 279. Dryolimnas cuvieri SHARPE, Bull. Brit. Orn. Club, I, January, 1893, p. xxviii. One male, apparently adult, from the Mampidongy Forest, East Imerina, February, 1896. “Native name, Tsikia. Iris reddish brown.” Family IBIDID 4. LOPHOTIBIS CRISTATA (Boddaert). Tantalus cristatus BODDAERT, Tabl. Pl. Enlum., 1783, p. 51. Lophotibis cristatus BONAPARTE, Consp. Av., II, 1855, p. 154. Two examples from the East Imerina Forest. One of these is an immature bird, differing from the adult in rufous edgings to the wing- coverts, and in the paler color of all the chestnut areas. The following data refer to the adult: “Iris reddish; skin around eye bright red; beak greenish; feet dark red.” No. 1197. BIRDS FROM MADAGASCAR—OBERHOLSER. Dore Family PLATALEID 4. PLATALEA ALBA Scopoli. Platalea alba Scopout, Del. Flor. et Faun. Insubr., II, 1786, p. 92. One adult from “between the two forests,” East Madagascar. Family ARDEID A. ARDETTA PODICEPS (Bonaparte). Ardeola podiceps BONAPARTE, Consp. Avium, II, 1855, p. 134. Ardetta podiceps GURNEY, Ibis, 1863, p. 330. One specimen from “between the two forests,” East Madagascar, taken in September, 1895. It is apparently an immature male, for the lower parts are rufous, sparsely streaked with dark brown, the wings and scapulars much mixed with rufous and chestnut. ARDEOLA XANTHOPODA (Hartlaub). Ardea xanthopoda HARTLAUB, Journ. f. Orn., 1860, p. 166 (from the Pelzeln man- uscript). One adult specimen in breeding plumage, from ‘between the two forests,” East Madagascar, taken in September, 1894. Whether or not the present individual is identical with that men- tioned by Dr. Sharpe! as being different from Ardeola ide, but proba- bly the same as Garzetta garzetta, it is certainly not true Ardeola ide, nor can it by any means be referred to Garzetta garzetta, but it agrees perfectly with Hartlaub’s original description of Ardea xanthopoda.? It differs from Ardeola ide, with which it has heretofore generally been confounded, chiefly in being almost pure white; from Garzetta garzetta it may be distinguished by the following characters, several of which, it will be noticed, may be regarded as generic: Bill shorter and pro- portionately stouter, the black tip sharply defined from the light base; whole foot very much shorter, and yellowish, not black; plumes of breast entirely decomposed, not lanceolate; head and hind neck strongly suffused with ochraceous, not pure white. It is therefore evident that Dr. Sharpe has insufficient grounds for synonymizing Ardea xanthopoda with Garzetta garzetta,? Captain Shelley being con- sequently right in his opinion of its distinctness.* A description of this specimen is as follows: Entirely pure white, the head and cervix washed with ochraceous, this deepest on the forehead, gradually disappearing posteriorly; two of the innermost secondaries dull brown, their broad shaft stripes pale yellowish; a few black streaks on the sides of the occiput; ornamental plumes of wholly decom- 1Cat. Birds Brit. Mus., XX VI, 1898, p. 207. 2Tdem., p. 207. 3Idem., p. 272. 4 List Birds Africa, I, 1896, p. 157. 238 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. posed feathers adorn the fore and hind neck and the back, most con- spicuously developed on the last; feet in skin dull yellowish; bill at tip black, sharply and almost vertically defined from the brownish base > of maxilla and the yellowish base of mandible. Length of wing, 250 mm.; tail, 94 mm.; exposed culmen, 61 mm.; tarsus, 58 mm.; middle toe and claw, 59 mm. BUTORIDES ATRICAPILLUS (Afzelius). Ardea atricapilla AFZELIUS, Vet. Acad. Handl., XXV, 1804, p. 264. Butorides atricapilla BONAPARTE, Consp. Avium, II, 1855, p. 129. One adult from ‘between the two forests,” Hast Madagascar. Family ANHINGID A. ANHINGA RUFA (Lacépéde and Daudin). Plotus rufus LACEPEDE and DAUDIN, in Buffon’s Hist. Nat. Quadr., XIV, 1799, p. 319; Ois., XVII, p. 81. One specimen, evidently an immature female, from ‘‘between the two forests,” East Madagascar, taken in February, 1895. The under parts of this individual vary from deep ochraceous to dull dark brown, but are without black. The white band below the eye is wanting; the light areas on the secondary coverts are large and nearly white; the scapu- lars are but slightly developed. | Family PHASIANID 4. MARGAROPERDIX MADAGARENSIS (Scopoli). Tetrao madagarensis SCOPOLI, Del. Flor. et Faun. Insubr., Pt. 2, 1786, p. 93. Margaroperdix madagascariensis HARTERT, Kat. Mus. Senckenb., 1891, p. 195. One specimen from Imerina, July, 1894. Family COLUMBIDAs. TURTUR PICTURATUS (Temminck). Columba picturata TEMMINCK, Pig. et Gallin., I, 1813, pp. 315, 480. Turtur picturatus BLyTH, Cat. B. Mus. As. Soc. B., 1849, p. 236. Three specimens from East Imerina. “Iris brown; beak red-brown; feet reddish.” These individuals, as is frequently the case in this species, have the slate color of the rump more or less mixed with brown. Family FALCONID Ai. FALCO ZONIVENTRIS (Peters). Hypotriorchis zoniventris PETERS, Sitz. k. Pr. Akad. Wiss. Berlin, 1853, p. 7. Falco zoniventris SCHLEGEL and POLLEN, Faun. Madagascar, Ois., 1868, p. 165. One male, apparently adult, from the Kast Imerina Forest, March, 1895. By reason of heavy streaking the jugulum is almost uniform blackish. The specimen appears to have been in process of molt when taken, as among the fresh feathers there are remains of the old plumage. NO. 1197. BIRDS FROM MADAGASCAR—OBERHOLSER. 239 FALCO MINOR Bonaparte. Falco minor BONAPARTE, Rey. et Mag. de Zool., 1850, p. 484. One specimen from the Ambohitritrimo Forest, East Imerina, Decem- ber, 1894. This bird is an immature female, with dark brown upper parts and streaked lower surface. The ground color of the hind neck is buffy ochraceous, not deep rufous, as given by Sharpe.' BUTEO BRACHYPTERUS Hartlaub. Buteo brachypterus HARTLAUB, Journ. f. Orn., 1860, p.11 (from the Pelzeln man- uscript). One adult male taken from the East Imerina Forest, taken in Octo- ber, 1895. ACCIPITER MADAGASCARIENSIS Verreaux. Accipiter madagascariensis J. VERREAUX, S. Afr. Quar. Journ., IT, 1833, p. 80. Two immature females from East Imerina, February, 1895. ACCIPITER FRANCESII Smith. Accipiter francesii SmiruH, 8. Afr. Quar. Journ., IT, 1834, p. 280. Five specimens, from the East Imerina and Ambohitritrimo forests. All seem to be more or less immature, most of them with the bars on the middle tail-feathers not distinctly indicated. The different indi- viduals vary somewhat in the width of the barring below. CIRCUS MAILLARDI Verreaux. Circus maillardi VERREAUX, in Maillard VIle de la Réun., II, 1863, p. 12. One handsome adult male from the East Imerina Forest, taken in October, 1895. POLYBOROIDES RADIATUS (Scopoli). Vvultur radiatus Scopouti, Del. Flor. et Faun., Insubr., II, 1786, p. 85. Polyboroides radiatus GRAY, List Gen. Birds, 1840, p. 5. One adult female from the Mampidongy Forest, East Imerina, Feb- ruary, 1896. ‘Iris dark brown, feet yellowish.” Family BUBONIDA. PISORHINA MENADENSIS RUTILA (Pucheran). Scops rutilus PUCHERAN, Rey. et Mag. de Zool., 1849, p. 29. Three specimens. Two of these, respectively from the Ambohitri- trimo and Vorwate forests, East Imerina, are immature birds in the rufous phase, with the adult plumage not yet fully acquired, the old feathers still persisting on the nape. The remaining example is an adult in the brown phase, and is quite dark. ! Cat. Birds Brit. Mus., I, 1874, p. 383. 240 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. All the subspecies of Pisorhina magica should be ranked as forms of Pisorhina menadensis; for the original description of the latter! appeared several years in advance of the former.’ These various races are as follows: Pisorhina menadensis menadensis (Quoy and Gaimard). Pisorhina menadensis magica (Miiller). Pisorhina menadensis leucospila (Gray). Pisorhina menadensis bouruensis (Sharpe). Pisorhina menadensis morotensis (Sharpe). Pisorhina menadensis siaoensis (Schlegel). Pisorhina menadensis albiventris (Sharpe). Pisorhina menadensis rutila (Pucheran). Pisorhina menadensis brookit (Sharpe). Pisorhina menadensis sulaensis (Hartert). Family PSITTACID. CORACOPSIS NIGRA (Linnzus). Psittacus niger LINN&HUS, Syst. Nat., 10th ed., I, 1758, p. 99. Coracopsis nigra WAGLER, Mon. Psitt., 1832, p. 680. A pair of adults from the forest of East Imerina. The female is similar to the male, but in size is rather less, and in color throughout not so deep. Family CUCULID A. COUA REYNAUDII Pucheran. Coua reynauditi PUCHERAN, Rey. Zool., 1845, p. 51. Three specimens from the forest of East Imerina. Two of these are immature birds, having the rufous of crown and forehead much obscured by dull olive, the greater and median wing-eoverts tipped with chestnut, the lower surface much mixed with the same color. The adult is noticeably paler below than a specimen collected by Dr. Abbott 80 miles northwest of Mahanoro. COUA CZERULEA (Linnezus). Cuculus ceruleus LINN&US, Syst. Nat., 12th ed., I, 1766, p. 171. Coua cerulea GRAY, in Griffith’s An. Kingdom, VII, 1829, p. 458. Three specimens from the forest of East Imerina. ‘The flesh round the eves a most brilliant lightish blue.” These individuals are some- what paler, both above and below, than most of the others at present available, but this difference does not seem to be correlated with local- ity. Two of them, taken early in February, are in process of molt, this observable chiefly in the wings and tail. 'Quoy and Gaimard, Voyage de 1’Astrolabe, I, 1826-34, p. 170, pl. ny, fig. 2, 2Miiller, Verhandl, Natuurl. Gesch. Nederl., Zool., 1840-1844, p. 110. NO. 1197. BIRDS FROM MANDAGASCAR—OBERHOLSER. 2A CUCULUS POLIOCEPHALUS ROCHII (Hartlaub). Cuculus rochit HARTLAUB, Proc. Zool. Soc. Lond., 1862, p. 224. Cuculus poliocephalus var. rochitti MILNE-EDWARDS and GRANDIDIER, Hist. Madag., Ois., I, 1879, p. 176. Two specimens from the forest of East Imerina. ‘Iris clear brown; eyelid yellow; feet yellow.” One of these is a young bird, with brown and rufous barred upper surface; the other is an adult. Judging from the small series at hand, the Madagascar form of Cuculus poliocephalus differs from that of Central Asia in the conspicuously darker color of the upper parts, as well asin the somewhat narrower barring below, and forms apparently a well-marked geographical race, to which is applicable the name rochit Hartlaub, as above given. Family CAPRIMULGID 2. CAPRIMULGUS ENARRATUS Gray. Caprimulgus enarratus Gray, Ann. and Mag. Nat. Hist., 1871, p. 428. One adult female from the forest of East Imerina, February, 1896. ‘Hye yellowish brown.” The tail-feathers are in process of molt. Family CORACIID 4. EURYSTOMUS GLAUCURUS (Miiller). Coracias glaucurus MULLER, Syst. Nat., Anhang., 1776, p. 86. Eurystomus giaucurus GRAY, Hand-list Birds, I, 1869, p. 76. Five specimens. One of the three adults is very deeply colored, particularly above; its throat and breast are brilliant violet instead of the usual rose purple. Of the two immature birds one is still greenish blue below; the other has much brownish and some purplish admixture. In these last the feathers of the upper surface have more or less dark brown centrally, imparting a mottled appearance that is absent in the adults. ATELORNIS CROSSLEYI (Sharpe). Atelornis crossleyi SHARPE, Proc. Zool. Soc. Lond., 1875, p. 74, pl. X1v. Two specimens from the forest of East Imerina. ‘Iris light brown.” The bird marked male has the crissum blue; the one sexed female has the same part bluish green. ATELORNIS PITTOIDES (Lafresnaye). Brachypteracias pittoides LAFRESNAYE, Mag. de Zool., 1834, pl. XXXII. Atelornis pittoides PUCHERAN, Rey. Zool., 1846, p. 200. Two specimens from the forest of East Imerina. “Iris dark brown.” One of these is an immature bird, differing from the adult in the par- ticulars mentioned by Dr. Sharpe,' also in the conspicuous chestnut margins of the wing-coverts and the superior tail-coverts. ! Cat. Birds Brit. Mus., XVII, 1892, p. 8. Proc. N. M. vol. xxii——16 242 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL BRACHYPTERACIAS LEPTOSOMUS (Lesson). Colaris leptosomus LESSON, Illustr. Zool., 1832, pl. xx. Brachypteracias leptosomus LAFRESNAYE, Mag. de Zool., 1834, Ois., pl. XXXI. One specimen, from the forest of Hast Imerina, February, 1876. “Tris light yellow; feet grayish.” This bird is immature, in which stage the colors of the head and lower surface are rather paler than in adults. Family ALCEDINID 4. CORYTHORNIS CRISTATUS (Linnzus). Alcedo cristata LINNZEUS, Syst. Nat., 12th ed., I, 1766, p. 178. Corythornis cristata Kaur, Fam. Alced., 1848, p. 13. Five specimens of this pretty little kingfisher are in the collection— all from Imerina. ‘Iris dark brown; feet coral red.” There seems to be but little individual variation among the adults of this species. Family PHILEPITTID A. PHILEPITTA CASTANEA (Miller). Turdus castaneus MULLER, Syst. Nat., Anhang., 1776, p. 1438. Philepitta castanea GRAY, Hand-list Birds, I, 1869, p. 297. Five immature specimens, from the forest of Kast Imerina. Two of these, taken in February, are molting into the black and yellow plumage of the adult. ‘Kye light brown.” Dr. Richmond is apparently quite right in his view! that the yellow tips to the black feathers are not an evidence of immaturity, but simply the usual accompaniment of the fresh molt, wearing off by abrasion until the bird assumes a jet black appearance. The earliest name for the present species is Turdus castaneus Miller, which antedates Turdus jala Boddaert by five years; and there seems to be no reason why it should not be adopted, as has already been done by Dr. Richmond.’ Family ALAUDIDA. MIRAFRA HOVA Hartlaub. Miraffra hova HARTLAUB, Journ. f. Orn., 1860, p. 106. One specimen, from Imerina. -1 Proc. U.S. Nat. Mus., XIX, 1897, p. 688. 2Tdem. No. 1197. BIRDS FROM MADAGASCAR—OBERHOLSER. 243 Family MOTACILLID. MOTACILLA FLAVIVENTRIS Hartlaub. Motacilla flaviventris HARTLAUB, Journ. f. Orn., 1860, p. 94 (from Verreaux). Two specimens in rather worn plumage. The specific name flaviventris in this connection is commonly credited to Verreaux;' but the first description of the species seems to have been published by Hartlaub, who, therefore, rather than Verreaux, should, as above given, be cited as the proper authority. ” Family PYCNONOTIDA. TYLAS EDUARDI Hartlaub. Tylas eduardi HARTLAUB, Proc. Zool. Soc. Lond., 1862, p. 152, pi. xviit. One specimen, from the forest of East Imerina. This is an imma- ture bird, and differs from the adult in that the forehead and throat are much mixed with white, the greater and median coverts tipped with ochraceous. ‘Iris brown.” HYPSIPETES MADAGASCARIENSIS (Miiller). Turdus madagascariensis MULLER, Syst. Nat., Anhang, 1776, p. 139. Hypsipetes madagascariensis SCHLEGEL, Proc. Zool. Soc., 1866, p. 422. Four specimens from East Imerina. “Iris brown; feet reddish yellow.” The only character adduced by Dr. Sharpe? for the differentiation of Ixocincla from Hypsipetes is the tarsal scutellation, a distinction which examination of a series of perfect specimens does not sustain, in so far at least as is concerned comparison of the present species with psaroides, the type of Hypsipetes. Whatever may be the affinities of the other forms, with which we at present have nothing to do, psaroides and madagascariensis are strictly congeneric. Family TIMELIID 2. BERNIERIA MADAGASCARIENSIS (Gmelin). Muscicapa madagascariensis GMELIN, Syst. Nat., I, 1788, p. 940. Bernieria madagascariensis HARTLAUB, Journ. fiir Orn., 1860, p. 90. One specimen from the forest of East imerina. This is a young bird in first plumage, and differs from the adult in the very dingy, less greenish color of the upper parts, particularly the back, and in the duller, more buffy color of the lower surface. ‘Cat. Rivoli Coll., 1846, p. 9. 2 See also Richmond, Proc. U.S. Nat. Mus., XIX, 1897, p. 688. ° Cat. Birds Brit. Mus., VII, 1881, p. 45. D244 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII hed OXYLABES MADAGASCARIENSIS (Gmelin). Motacilla madagascariensis GMELIN, Syst. Nat., I, 1788, p. 952. Oxylabes madagascarensis SHARPE, Proe. Zool. Soc. Lond., 1870, p. 386. The single specimen referred to this species agrees in most respects with Dr. Sharpe’s description of the very young bird,' except that the breast has no admixture of rufous feathers. The shade of the entire upper parts, including wings and tail, is a much less rufescent olive than in the adult. Judging from the texture of the plumage, however, this individual does not seem to be a very young bird. CROSSLEYIA XANTHOPHRYS (Sharpe). Oxylabes xanthophrys SHARPE, Proc. Zool. Soc.-Lond., 1875, p. 76. Crossleyia xanthophrys HARTLAUB, V6g. Madag., 1877, p. 168. One adult specimen. ‘Che tail and upper tail-coverts lack the brown transverse markings; otherwise it seems to be typical. The structure of the nostrils and the much obliterated scutellation of the tarsus suffi- ciently distinguish Crossleyia from Oxylabes, with which it has been recently united by Captain Shelley.” Family TURDID J. PSEUDOCOSSYPHUS SHARPEI (Gray). Cossypha sharpei GRAY, Ann. and Mag. Nat. Hist., 1871, p. 429. Pseudocossyphus sharpit SHARPE, Cat. Birds Brit. Mus., VII, 1883, p. 22. Two specimens from the forest of East Imerina, taken in February, 1896. One of these is in the spotted first plumage; the other is just emerging from this condition, having still some buffy markings on wing-coverts, head, and neck. Family SYLVIIDAi. NESILLAS TYPICA (Hartlaub). Ellisia typica HARTLAUB, Journ. f. Orn., 1860, p. 92. Nesillas typica OBERHOLSER, Proc. Acad. Nat. Sci. Phila., 1899, p. 211. Four specimens from the forest of East Imerina. In the color of the upper parts there is considerable individual difference, some of which is undoubtedly due to wear. Immature birds are more rufescent above than adults. DROMAZOCERCUS BRUNNEUS Sharpe. Dromeocercus brunneus SHARPE, Proc. Zool. Soc. Lond., 1877, p. 23 pl. 1, fig. 2. One specimen from the forest of East Imerina. 'Cat. Birds Brit. Mus., VII, 1883, p. 572. 2 Birds of Africa, I, 1896, p. 65. No. 1197. BIRDS FROM MADAGASCAR—OBERHOLSER. QAdD CISTICOLA CHERINA (Smith). Drymoica cherina SMITH, Ill. Zool. 8. Afr., Aves, 1843, pl. LXxvuJ, fig. 2. Cisticola cherina SHARPE, Layard’s Birds S. Afr., 1876, p. 278. One example from Imerina. It is apparently an adult, and isin the plase having a uniform crown; the lower surface is almost without yellow tinge. Family MUSCICAPIDA. TCHITREA MUTATA (Linnzus). Muscicapa mutata LINNZUS, Syst. Nat., 12th ed., I, 1766, p. 325. Tehitrea mutata GRAY, Genera Birds, I, 1846, p. 259. Three specimens from East Imerina. One of these is a male just assuming the plumage of the adult, the tail being white and black, the lower parts mixed white and rufous. The two other individuals are young males, one in the rufous plumage of the female, the second in the dark, rich chestnut garb. The generic name Terpsiphone, currently employed for the group of flycatchers to which the present species belongs, was originally pro- posed by Gloger' as a substitute for Muscipeta Cuvier,’ because Musci- peta was considered “zu iihnlich und ganz gleich bedeutend mit Muscicapa;” and since the type of Muscipeta is the South American Todus regius Gmelin (= Muscivora regia auct.), it follows that the same Species must be regarded as the type of Terpsiphone. This being the case, Terpsiphone can of course not be used to designate the Old World genus, for which the name Tchitrea Lesson * then becomes available. PRATINCOLA SIBILLA (Linnzus). Motacilla sibilla LiInN2ZUS, Syst. Nat., 12th ed., I, 1766, p. 337. Pratincola sybilla BONAPARTE, Consp. Av., I, 1850, p. 304. Two specimens—an adult male, somewhat worn, and a young bird in the spotted plumage. “NEWTONIA AMPHICHROA Reichenow. Newtonia amphichroa REICHENOW, Journ. f. Orn., 1891, p. 210. Two examples of this rare species are in the collection. The points of difference from Newtonia brunneicauda given by Dr. Reichenow are fully sustained by the two adult specimens in the National Museum; and, in addition, amphichroa seems to have a somewhat larger bill. One of the present examples is in first plumage, and may be described as follows: Crown, nape, and rump chestnut; back olive brown, tinged 'Troriep’s Notizen, XVI, No. 18, March, 1827, p. 278. ?Regne Anim., I, 1817, p. 344. ’Traité @Orn., 1831, p. 386. 2AG PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. with reddish; tail and wings fuscous, margined exteriorly with oliva- ceous; wing-coverts olivaceous, broadly tipped with chestnut; entire lower surface dark fulvous, slightly paler on the posterior portion. Family NECTARINIID. CINNYRIS SOVIMANGA (Gmelin). Certhia sovimanga GMELIN, Syst. Nat., I, 1788, p. 471. Cinnyris soui-manga BONAPARTE, Consp. Avium, I, 1850, p. 407. Two individuals from the forest of East Imerina. One of these is an adult; the other a young male, which differs from the adult of the same sex in being nearly uniform grayish olive green above, with only a few scattered metallic feathers; sides of head and neck dull olive grayish, mixed with pale yellowish; throat dull black; crissum yellowish white; remainder of lower parts bright yellow, the sides washed with olive. NEODREPANIS CORUSCANS Sharpe. Neodrepanis coruscans SHARPE, Proc. Zool. Soc. Lond., 1875, p. 76. A single adult male from East Imerina. The forehead is olive green without metallic luster, and the crown and cervix have many plain olive green feathers intermingled with the metallic ones. Family MELIPHAGID 4%. ZOSTEROPS MADERASPATANA (Linneus). Motacilla maderaspatana LINNEZUS, Syst. Nat., 12th ed., I, 1766, p. 334. Zosterops maderaspatana RICHMOND, Proc. U.S. Nat. Mus., XIX, 1897, p. 693. Two specimens from the forest of East Imerina are identical with those collected by Dr. Abbott. The earliest name for the present spe- cies, which is commonly known as Zosterops madagascariensis, seems to be Motacilla maderaspatana Linneeus, as already pointed out by Dr. Richmond. ! Family PLOCEID 2. NELICURVIUS NELICOURVI (Scopoli). Parvus nelicourvi SCOPOLI, Del. Flor. et Faun. Insubr., 1786, p. 96. Nelicurvius nelicourvi BARTLETT, Proc. Zool. Soc. Lond., 1879, p. 771. One specimen, from the forest of East Imerina. The loose texture of the plumage and the lack of yellow on the forehead indicate immaturity. “Tris brown; feet maroon.” FOUDIA MADAGASCARIENSIS (Linnzus). Loxia madagascariensis LINNZUS, Syst. Nat., 12th ed., I, 1766, p. 300. Foudia madagascariensis BONAPARTE, Consp. Avium, I, 1850, p. 445. Four examples from Imerina. One of these is a young male in tran- sition plumage, the back being olive green and black, the posterior lower parts dull olive grayish; but the head and throat are bright scarlet as in the adult. “Iris [of adult male] brown.” 1 Proc. U.S. Nat. Mus., XIX, 1897, p. 693. as st No. 1197. BIRDS FROM MADAGASCAR—OBERHOLSER. QAT Family CAMPEPHAGID i. GRAUCALUS CINEREUS (Muller). Muscicapa cinerea MULLER, Syst. Nat., Anhang, 1776, p. 171. Graucalus cinereus SHARPE, Cat. Birds Brit. Mus., IV, 1879, p. 28. Two specimens from the forest of Kast Imerina. These appear to be immature birds just completing the plumage of the adult. The chin is strongly washed with brownish, the remaining lower parts slightly so; the innermost secondaries are conspicuously tipped with white; the primaries and secondaries are distally margined on exterior webs with buffy. One of these birds differs from the other in having an almost black nuchal collar, and, though in other respects resembling the female, is apparently a male. This individual has the greater wing- coverts tipped and exteriorly edged with buffy white. ‘Iris dark brown.” Family DICRURIDE. EDOLIUS FORFICATUS (Linnzus). Lanius forficatus LINNZUS, Svst. Nat., 12th ed., I, 1766, p. 154. Edolius forficatus CUv1ER, Régne Animal, I, 1817, p. 350. One example, an adult male, from the forest of East Imerina. ‘Tris red.” Family LANIID!. CALICALICUS MADAGASCARIENSIS (Linnzus). Lanius madagascariensis LINNZUS, Syst. Nat., 12th ed., I, 1766, p. 137. Calicalicus madagascariensis BONAPARTE, Compt. Rend., XX XVIII, 1854, p.535. One adult female from the forest of East Imerina. VANGA CURVIROSTRIS (Gmelin). Lanius curvirostris LINNZUS, Syst. Nat., 12th ed., I, 1766, p. 135. Vanga curvirostris CUVIER, Regne Anim., I, 1817, p. 339. Three specimens, from the forest of Kast Imerina. They are appar- ently immature, having the forehead, nuchal collar, and lower surface pale gray instead of white. One of them has all the light portions of the plumage strongly tinged with brownish, evidently an adventitious stain. ‘Iris brown; beak black; feet pearly gray.” Family STURNIDZ. HARTLAUBIUS AURATUS (Miiller). Turdus auratus MULLER, Syst. Nat., Anhang, 1776, p. 140. Hartlaubius auratus RICHMOND, Proc. U.S. Nat. Mus., XIX, 1897, p. 693. One individual, a female, from the forest of East Imerina, is appre- ciably smaller than males inthe National Museum. “ Iris dark brown.” QAS PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. r a In the female of this species the brilliant metallic blue of the exterior webs of the wing-quills is replaced on the primaries by green, on the secondaries by brown with a marginal and distal greenish gloss; and the white of the wing is very much reduced in extent. The specific term auratus of Miiller seems to be the earliest one for the species, having seven years priority over madagascariensis Bod- daert'; and, since it seems to be eligible, should be given the preference, as has already been done by Dr. Richmond in the article previously cited. _' Tabi. Pl. Enlum., 1783, p. 32 REPORT ON A COLLECTION OF DIPTEROUS INSECTS ; FROM PUERTO RICO. By D. W. CoQuiLLEtTt, Custodian of the Diptera in the U. S. National Museum. During the months of January and February, 1899, Mr. August Busck, of the U.S. Department of Agriculture, through the courtesy ‘of the U.S. Fish Commission, visited various portions of Puerto Rico, and among other things collected quite a large series of dipterous insects, which were later deposited in the U. S. National Museum. This series comprises 864 specimens, representing 117 species, distrib- uted in 79 genera and 31 families. ‘Three of the genera and sixteen of the species appear to be new to science, and are duly characterized in the following pages. Fifty-one of the species, nearly one-half of the whole number, also occur in the United States proper, several of them ranging as far northward as the State of New Hampshire. Twenty of the others have not as yet been reported as occurring outside of Puerto Rico, while the remaining forty-six species have also been obtained in some other island of the West Indies or in Central or South America. Only a very few species of Diptera were described from Puerto Rico by the older authors, and it was not until the year 1885 that any con- siderable number of species were reported from that island. In that year Herr Victor von Roeder, of Hoym, Germany, pubJished a list, with descriptions of new forms, of a series of these insects collected by Con- sul Krug.! This list numbers 111 species, of which 76 are different from those obtained by Mr. Busck; adding these to the 117 species obtained by the latter gives a total of 193 species now known to occur in Puerto Rico. The report in detail is as follows: Family CECIDOMYIID 4%. DIPLOSIS COCCIDARUM Cockerell. Twenty specimens bred from larve associated with Dactylopius citri, and nine specimens bred from Lecanium hemisphaericum; also a single Specimen captured at Mayaguezin January. This species was origi- 'Entomologische Zeitung zu Stettin, 1885, pp. 337-349. Republished, with notes, by Senor Juan Gundlach in the Anales de la Sociedad Espanola de Historia Natural, 1887, pp. 177-199. PROCEEDINGS U. S. NATIONAL Museum, VOL. XXII—No. 1198. we 250 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. nally described from specimens bred from larvee associated with various Coccids and Aleurodes at Kingston, Jamacia. The Puerto Rican speci- mens do not differ appreciably from a series of six specimens from the | former locality received from Professor Cockerell and by him bred from larvee associated with Pulvinaria urbicola. Family CULICID A. CULEX PERTURBANS Walker. Two specimens captured at Bayamon in January. This species also occurs in this country, extending from Maryland southward to Florida and Texas. Family CHIRONOMID 4. CHIRONOMUS REDUENS Walker. A single specimen captured at Aguadilla in January. This species is also known to occur in Mississippi. CERATOPOGON SEQUAX Williston. Seventeen specimens captured in January at Utuado, Aguadilla, Bayamon, and Mayaguez. It was originally described from St. Vin- cent, West Indies. CERATOPOGON PUNCTIPENNIS Williston. A single specimen from Aguadillain January. This species was also originally described from St. Vincent. Family BIBIONID4. SCATOPSE PYGMEA Loew. Two specimens captured at Mayaguez in January. The species was originally described from the District of Columbia, but has also been reported from St. Vincent, West Indies. Family TIPULID A. GERANOMYIA RUFESCENS Loew. A single specimen collected at Aguadilla in January. Originally described from Puerto Rico. - ATARBA PLEURALIS Williston. A single specimen captured at Aguadilla in January. The type locality of this species is St. Vincent, West Indies. Family STRATIOMYITID 8. HERMETIA ILLUCENS Linnezus. Two specimens collected at Utuado and Aguadilla in January. The species has a wide distribution, extending from the southern portion of the United States, through Mexico, Central America, and the West Indies, into South America at least as far as Brazil. NO. 1198. DIPTERA FROM PUERTO RICO—COQUILLETT. 251 ODONTOMYIA DORSALIS Fabricius. A single specimen from Fajardo in February. It has previously been reported from Santo Domingo, West Indies, and South America. Family ASILID4. PROCTACANTHUS RUFIVENTRIS Macquart. A female specimen captured at Arroyo in February. The species was originally described from Santo Domingo, and has already been reported from Puerto Rico by Mr. V. von Roeder. Family BOMBYLIID. HYPERALONIA SERVILLEI Macquart. Eleven specimens, Mayaguez and Aguadilla in January, and Fajardo, Arroyo, and Vieques Island in February. Specimens are also in the U.S. National Museum from Nassau, Bahama Islands, collected by Dr. H. G. Dyar. : ANTHRAX GORGON Fabricius. Seven specimens, captured at Mayaguez and Aguadilla in January, and Vieques Island and Fajardo in February. The species was origi- nally described from the West Indies, and has been reported from Puerto Rico by Mr. von Roeder. Family EMPID 4. EUHYBUS SUBJECTUS Walker. A single specimen, collected at Utuado in January. This species is also found in the eastern portion of the United States, ranging from the White Mountains, New Hampshire, to the southern part of Florida. TACHYDROMIA FLAVIDA Williston. Three specimens, captured at Aguadilla in January, and Fajardo in February. The species was originally described from St. Vincent, West Indies, and was placed by Dr. Williston in the genus Drapetis. It is, however, a true Tachydromia, having the front femora consid- erably thickened, as stated in the original description.' Family DOLICHOPODID A. PARACLIUS FILIFERUS Aldrich. Three specimens, captured on Vieques Island in February. The spe- cies was originally described from St. Vincent, West Indies. PELASTONEURUS FASCIATUS Roeder. Five specimens, from Arroyo, Vieques Island, and Fajardo in Feb- ruary. The type locality of this species is Puerto Rico. 'In Williston’s table of the species of Drapetis collected in St. Vincent two serious errors occur. For xanthopoda read flavidus, and for flavipes read xanthopodus. The table is published in Trans. Ent. Soc. London for 1896, p. 441. 252 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. | PSILOPUS LONGICORNIS Fabricius. A single specimen, collected at Fajardo in February. The species | was originally described from the West Indies. PSILOPUS PORTORICENSIS? Macquart. Five specimens, from Mayaguez and Aguadilla in January, and Arroyo and Vieques Island in February. They agree very well with the short description, which was based on a specimen from Puerto Rico, except that the antennal arista is wholly bare. : SYNTORMON BARBATUS Loew. Utuado, in January. -A single specimen of this species, originally deseribed from the Middle States. CHRYSOTUS PALLIPES Loew. Thirty-two specimens, from Utuado, Aguadilla, Bayamon, and May- aguez in January, and Arroyo, Fajardo, Vieques Island, and Culebra Island in February. Originally described from the Middle States, Dr. Schiner has recorded it from South America, and it is among the species reported by von Roeder from Puerto Rico. Family SYRPHID A. BACCHA CLAVATA Fabricius. Four specimens, collected at Aguadilla and Mayaguez in January, and Fajardo and Arroyo in February. Originally described from South America, this species is at present known to have a very wide range, extending from Nebraska on the north to Buenos Ayres, Argentina, on tbe south, and including the West Indian and neighboring islands. Von Roeder has already reported it from Puerto Rico. BACCHA species. Two specimens were bred from larve feeding upon Dactylopius citri on Culebra Island in February; they represent a species distinct from the above, but are too immature to admit of a positive identi- fication. OCYPTAMUS LATIUSCULA Loew. A single specimen, collected at Fajardo in February. This species was originally described from Cuba, and has also been reported from Jamaica and Santo Domingo. Von Roeder has already recorded it from Puerto Rico. ERISTALIS VINETORUM Fabricius. Seven specimens, collected at Mayaguez and Aguadilla in January, and Arroyo in February. This species was originally described from Brazil, and is now reported as occurring over nearly the entire eastern NO. 1198. DIPTERA FROM PUERTO RICO—COQUILLETT. 253 half of the United States, the whole of Mexico, Central and ; South America, and the West Indies. It was previously reported from Puerto Rico by von Roeder. ERISTALIS ALBIFRONS Wiedemann. A single specimen, collected at Arroyo in February. This species was also originally described from Brazil, and has practically the same distribution as the preceding species. MESOGRAMMA LACINIOSA Loew. A single specimen from Utuado in January. The type locality of this species is Cuba, but it is aiso reported from St. Vincent, West Indies, and von Roeder has recorded its occurrence in Puerto Rico. MESOGRAMMA ARCIFERA Loew. Twelve specimens collected at Mayaguez and Aguadilla in January, and Vieques Island, Culebra Island, Arroyo, and Fajardo in February. This species was also originally described from Cuba, and has been reported by Mr. C. W. Johnson as occurring in Jamaica. MESOGRAMMA SUBANNULATA Loew. Eighteen specimens from Utuado and Aguadilla in January, and Vieques Island, Fajardo, and Arroyoin February. Originally described from Cuba, and Mr. Johnson has reported it from Jamaica. Mesograpta? cuprina Bigot, also described from Cuba, is a synonym. Family PHORID J. PHORA AUREA Aldrich. Five specimens, taken at Mayaguez and Bayamon in January, and Arroyo in February. This species was originally reported from St. Vincent, West Indies. Family TACHINID 2. ARCHYTAS BASIFULVA Walker. A single specimen captured on Vieques Island in February. The type locality of this species is Jamaica, West Indies. EUPHOROCERA CLARIPENNIS Macquart. Three specimens, bred February 10, from cocoons of Megalopyge krugit Dewitz, collected at San Juan. This Tachinid is found in all parts of the United States, but has not heretofore been reported as occurring outside of this country. BELVOSIA LUTEOLA, new species. Female: Head yellow, the occiput, except the lower portion and a semicircular spot in the middle of the upper edge, black, gray pruinose; 254 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. frontal vitta opaque, orange yellow; sides of front polished, except the lower outer angles, which are golden yellow pruinose; frontal bristles descending slightly below the arista; face and cheeks silvery white pruinose; sides of face bearing a triangular patch of short white bristly hairs, extending nearly one-third of distance from the lowest frontal bristle to the oral margin; antenne reaching six-sevenths of distance to the oral margin, black, the first two joints reddish yellow, the third about five times as long as the second, arista thickened almost to its apex, the penultimate joint slightly longer than broad; palpi yellow, proboscis brownish black. Thorax black, gray pruinose, marked with four black vittz, bearing four pairs of postsutural dorso-central macro- cheetz and four sternopleural; scutellum brown, the margin yellowish. Abdomen yellow, the base of the first segment, a dorsal vitta, and the posterior margin of the third segment black; the fourth segment and bases of the two preceding yellowish pruinose, the macrocheetz only marginal. Legs black. Wings blackish, the anterior basal portion subhyaline, tinged in places with yellowish, the third vein bearing two or three bristles near the base; calypteres white. Length,11mm. A single specimen taken on Vieques Island in February. Type.—Cat. No. 4373, U.S.N.M. HYPOSTENA VANDERWULPII Townsend. A single specimen captured on Vieques Island in February. The species was originally reported from Florida, but also occurs in southern California. Family DEXID. MYOCERA RUFIANALIS van der Wulp. - A single specimen, from Culebra Island in February. The species was originally described from Mexico, but also occurs in Jamaica, West Indies. Family SARCOPHAGID 4. SARCOPHAGA OCCIDUA Fabricius. Fifty-five specimens, collected at Mayaguez, Bayamon, Utuado, and Aguadilla in January; aud Vieques Island, Arroyo, and Fajardo in February. The species was originally described from the West Indies. SARCOPHAGA PLINTHOPYGA Wiedemann. Twenty-eight specimens, from Aguadilla, Utuado, and Mayaguez in January,and Vieques Island, Culebra Island, and Fajardo in February. This species was originally described from St. Thomas, West Indies, and has been reported from Jamaica by Mr. Johnson and from Puerto Rico by von Roeder. SARCOPHAGA LAMBENS Wiedemann. Five specimens, from Vieques Island and Culebra Island in Feb- ruary. Originally described from St. Paul, Brazil, and the West Indies, it has already been reported from Puerto Rico by Mr. von Roeder. NO. 1198. DIPTERA FROM PUERTO RICO—COQUILLETT. 255 SARCOPHAGA DIVERSIPES, new species. Female: Black, the first two antennal joints, palpi, trochanters, broad apices of the femora, and the genitalia yellow; frontal vitta dark brown, sides of front golden yellow pruinose, changing to gray at the vertex, one pair of orbital bristles, no ocellar bristles, frontals descending almost to apex of the first antennal joint, middle of face gray pruinose, the sides and upper part of the cheeks golden yellow, remaining portion of the cheeks brownish, sides of face each bearing a row of short, scarcely perceptible, bristly hairs, antenne nearly reaching the oral margin, the third joint slightly over twice as long as the second, arista long-plumose on the basal three-fourths; thorax gray pruinose, marked with three broad black vitta, a black streak in front of the insertion of each wing and a second near the center of the pleura; three pairs of large postsutural dorso-central macrochete, one pair of acrestichals, and two sterno-pleurals; scutellum gray pruinose, the middle third black; abdomen opaque, gray pruinose, three vitte and the hind margin of each of the first four segments black, the two outermost vittz being composed of triangular black spots; wings hyaline, the third vein bristly about one-third of distance from its base to the small crossvein; calypteres white. Length,6 mm. Fajardo,in February. Two speci- mens. Type.—Cat. No. 4374, U.S.N.M. HELICOBIA HELICIS Townsend. Seven specimens, collected at Bayamon in January, and Fajardo, Arroyo, and Vieques Island in February. This species is distributed over nearly the whole of the United States. HELICOBIA species. A single specimen, from Culebra Island in February. Family CALLIPHORIDA. CHRYSOMYIA MACELLARIA Fabricius. Two specimens, taken at Mayaguez in January, and Culebra Island in February. The known range of this species is from Ohio south- ward through Mexico, Central America, the West Indies, and over the greater portion of South America. LUCILIA CA®SAR Linnezus. One specimen, collected at Fajardo in February. A European spe- cies, which is now distributed over the greater portion of the warmer part of this globe. 256 PROCEEDINGS OF THE NATIONAL MUSEUM. “VOL. XXII. a Family MUSCID ©. MUSCA DOMESTICA Linnzus. A single specimen of this cosmopolitan species was captured on Culebra Island in February. STOMOXYS CALCITRANS Linnzus. A single specimen, captured on Vieques Island in February. This species has nearly the same distribution as L. cwsar. PYRELLIA OCHRICORNIS Wiedemann. | Nine specimens, taken on Culebra Island in February. The species was originally described from Brazil, but has also been reported from Cuba and Puerto Rico. MUSCINA TRIPUNCTATA van der Wulbp. A single specimen from Culebra Island in February. The species was originally described from Mexico. LIMNOPHORA ARCUATA Stein. Three specimens, captured at Mayaguez in January, and Culebra Island and Arroyo in February. The type locality of this species is Georgia, and I have seen specimens collected in the District of Columbia. LISPA RUFITIBIALIS Macquart. Three specimens, taken at Fajardo and Vieques island in February. The species was originally described from South America. CCENOSIA VARICORNIS, new species. Male and female: Black, the third antennal joint of the male, except its base, the extreme apices of the femora, whole of tibie, base of tarsi and halteres, yellow; an elongate triangular spot below the ocelli, dark-gray pruinose, sides of front gray pruinose, the face, cheeks, third joint of antennez, except its base, and the upper edge of the sec- ond joint, whitish pruinose; antenne two-thirds as long as the face, the third joint one and one-third times as long as the second, its lower front corner produced in the form of a sharp tooth; arista short plu- mose, the longest hairs only slightly longer than its greatest diameter; thorax gray pruinose, marked with five blackish-brown vittz, the medio-dorsal and lateral ones broad, the former almost crossing the scutellum, the remaining pair narrow and interrupted, rarely wanting; two pairs of postsutural dorsocentral macrochetz, the bristly hairs between them arranged in two rows; abdomen gray pruinose, a pair of suborbicular blackish spots on the posterior part of the first three seg- ments, those on the second and third the most distinct and each bear- ing a macrocheta on its anterior part; a blackish-brown interrupted No. 1198. DIPTERA FROM PUERTO RICO—COQUILLETT. 257 medio-dorsal vitta, reduced in the female to a dot on the second and third segments; fourth segment bearing a discal and a marginal row of macrochetz; front tibize each bearing a single macrocheta, situated near the middle of the posterior side, middle tibiw each with a pair near the middle; hind tibiz each with a circle of four near the middle, besides those at the apices; wings hyaline, unmarked; calypteres white. Length,4to5mm. Bayamon, Aguadilla, and Utuado in Janu- ary, and Vieques Island, Fajardo, and Arroyo in February. Ten males and two females. Type.—Cat. No. 4375, U.S.N.M. Family SCATOPHAGID 4. SCATOPHAGA EXOTICA Wiedemann. Four specimens, collected on Culebra Island in February. This species was originally described from New Orleans, Louisiana. Family MICROPEZID A. CALOBATA FASCIATA Fabricius. Hight specimens, captured with the preceding. It has been reported from Jamaica, Puerto Rico, and Florida. CALOBATA LASCIVA Fabricius. Six specimens, from Mayaguez in January, and Fajardo and Vieques Island in February. This species was originally described from Cayenne, French Guiana, and has been reported from Puerto Rico, Cuba, Jamaica, Florida, New York, and Mexico, while the U. S. National Museum contains specimens from Georgia, South Carolina, Louisiana, California, and Brazil. Macquart has also recorded it from Philadelphia, Pennsylvania, Java, and Australia, but it is very doubt- ful that this species occurs in either of the two last-named localities. Calobata lunulata of van der Wulp! is a synonym, as that author sus- pected it might be. MICROPEZA LIMBATA Roeder. A single specimen collected at Mayaguez in January. The species was originally described from Puerto Rico. Family ORTALID ®. EUXESTA THOM Loew. Fifteen specimens, collected at Bayamon, Mayaguez, and Aguadilla in January, and Arroyo and Vieques Island in February. The type locality is St. Thomas, West Indies. ! Biol. Cent.-Am., II, p. 372. Proce. N. M. vol. xxii——17 258 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. EUXESTA STIGMATIAS Loew. Three specimens, from Mayaguez and Aguadilla in January, and Vieques Island in February. This species was originally described from specimens collected in Cuba and Brazil, and has been reported from Puerto Rico and St. Vincent Island. EUXESTA SPOLIATA Loew. Two specimens, from Aguadilla in January, and Fajardo in Febru- ary. It was originally described from Cuba, and von Roeder has already reported its occurrence in Puerto Rico. EUXESTA APICALIS Williston. A single specimen, captured at Utuado in January. The type loeal- ity is St. Vincent, West Indies. Family TRY PETID 44. ACIURA INSECTA Loew. Twenty-one specimens, from Aguadilla, Mayaguez, and Utuado in January, and Fajardo in February. Originally described from Cuba, this species has been reported from Puerto Rico, Haiti, Jamaica, Florida, Colombia, and Brazil. TEPHRITIS PEREGRINA Loew. Thirteen specimens, collected at Aguadilla and Mayaguez in Jan- uary, and Vieques Island in February. Originally described from Brazil, it has also been reported from St. Vincent, West Indies. > Family SAPROMYZID AK. PHYSEGENUA OBSCURIPENNIS Bigot. Thirteen specimens, from Utuado, Mayaguez, and Aguadilla in Jan- uary. Originally described from Cuba, it has been reported from Puerto Rico, Jamaica, and South America. Von Roeder has already published the fact that Lauxania variegata Loew, also described from Cuba, is a synonym of the present species. SAPROMYZA SORDIDA Wiedemann. A single specimen, collected at Aguadillain January. This species was originally described from the West Indies, and the U. 8. National Museum contains specimens which were collected in Florida and Georgia. LONCHZA LONGICORNIS Williston. A single specimen, captured at Utnado in January. Originally described from St. Vincent, West Indies. NO. 1198. DIPTERA FROM PUERTO RICO—COQUILLETT. 259 Family SHPSIDA. SEPSIS INSULARIS Williston. Twenty-eight specimens, collected at Aguadilla, Mayaguez, Bayamon, and Utuado in January and Fajardo and Vieques Island in February. The species was originally described from St. Vincent, West Indies. Family EPHYDRID4. NOTIPHILA VIRGATA, new species. Male: Black, the greater part of the antenne, palpi, apex of probos- cis, halteres, and middle and hind tibiz and their tarsi, yellow, the front tibiz and tarsi, brown, their bases sometimes yellowish, the other tibize changing into brownish toward their apices; front opaque, yellowish gray pruinose, a black spot between the ocelli, extending downward about halfway to lower edge of the front, and a short distance on either side of this spot is a black vitta which extends across the front and is greatly dilated at its lower end; face yellow pruinose, bearing one or two lateral pairs of macrochetz on the lower part; thorax opaque, gray pruinose, mesonotum marked with five black vitte, all, with the excep- tion of the outer pair, extending entirely across it, the median one posteriorly forked, each fork uniting with the adjacent vitta, the outer pair of vittze considerably abbreviated anteriorly; a brown vitta on the upper part of the pleura and two converging ones almost crossing the scutellum; abdomen opaque, gray pruinose, a pair of large black spots on the front part of segments 2, 3, and 5, each spot at its inner side cross- ing the segment, the pair on segment 5 slightly polished; the gray portions are marked with several black dots; fourth segment marked with a transverse row of four black, triangular spots besides several black dots; wings grayish hyaline. Length, 3.5mm. Six male speci- mens, taken at Utuado and Bayamon in January, and Arroyo and Vieques Island in February. Type.—Cat. No. 4376, U.S.N.M. PARALIMNA DECIPIENS Loew. Three specimens, collected at Utuado and Mayaguez in January. This species was originally described from Texas, and it also occurs in Georgia and Florida. PARALIMNA OBSCURA Williston. Two specimens, taken at Bayamon in January and Fajardo in Feb- ruary. Originally described from St. Vincent, West Indies, it has also been reported from Brazil. 260 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. ILYTHEA OSCITANS Walker. A. single specimen, captured at Utuado in January. This species was originally described from the United States, without any mention of the exact locality. I have examined a specimen captured in Massa- chusetts, forming a part of Dr. Garry de N. Hough’s collection. ILYTHEA FLAVIPES Williston. Four specimens, captured at Utuado and Bayamon in January. It was originally described from St. Vincent, West Indies, and has also been reported from Rio Janeiro, Brazil. ATHYROGLOSSA NITIDA Williston. Three specimens, taken at Fajardo and Vieques Island in February. This species was also originally described from St. Vincent. PSILOPA ACICULATA Loew. Forty-seven specimens, collected at Utuado, Mayaguez, Bayamon, and Aguadilla in January, and Arroyo, Fajardo, and Vieques Island in February. Originally described from Cuba, it has also been reported from St. Vincent and Grenada islands, and from Rio Janeiro, Brazil. I have studied specimens collected in Georgia and Louisiana, forming part of the collection of Dr. Hough. PSILOPA NIGRIMANA Williston. Four specimens, collected at Utuado and Bayamon in January. Orig- inally described from St. Vincent, West Indies, it has also been reported from Brazil. PSILOPA MELLIPES, new species. Male and female: Body and head polished, black or bronze green; in the latter case usually with a strong violaceous tinge; antenne brown, elongated, the third joint from two to almost three times as long as wide; a single macrocheta near each lower corner of the face; probos- cis brown, the apex yellow, palpi brown; thorax bearing a single pair of dorso-central macrochete; fourth segment of abdomen the longest— about twice as long as the fifth in the male, but only one and one-fourth times in the female; halteres and legs, including the coxa, yellow; wings hyaline; apex of second vein midway between apices of the first and third veins. Length, 1 to 1.5 mm. Four specimens. collected at Utuado in January and Arroyo in February. Type.—Cat. No. 4377, U.S.N.M. ALLOTRICHOMA ABDOMINALIS Williston. A single specimen, taken at Utuado in January. It was originally described from St. Vincent, West Indies, and has also been reported from Brazil. No. 1198. DIPTERA FROM PUERTO RICO—COQUILLETT. 261 onl DISCOCERINA PARVA Loew. Six specimens, taken at Aguadilla in January and Arroyo and Vie- ques Island in February. This species was originally described from the District of Columbia, and the U. 8S. National Museum contains a specimen captured at Lake Worth, Florida, by Mrs. A. T. Slosson. DISCOCERINA LEUCOPROCTA Loew. Eleven specimens, from Utuado, Mayaguez, and Aguadilla in Janu- ary and Arroyo, Fajardo, and Vieques Island in February. It was originally described from Maryland. HYDRELLIA GILVIPES, new species. Male: Black, the greater part of the antenne, median vitta on the face, the cheeks, palpi, and legs, including the front tarsi, yellow, knob of the halteres whitish; front opaque, dark gray pruinose, the lower corners brown; face and cheeks yellowish-gray pruinose; a row of about seven short bristles extending from the lower part of the face to the occiput, crossing the cheek near the eye; third joint of antennz oval, only slightly longer than broad; thorax and scutellum opaque, grayish-brown pruinose, that on the pleura light gray; two pairs of dorso-central macrochet, no bristly hairs between them; abdomen polished, the center of the second segment and posterior margin of the third yellowish gray pruinose; fourth segment longer than any of the others, about one and one-third times as long as the fifth; wings yel- lowish hyaline, the apex of the second vein nearly midway between the apices of the first and third veins. Length, 1.2 mm. A single specimen, collected at Bayamon in January. Type.—Cat. No. 4378, U.S.N.M. PTILOMYIA, new genus. Second joint of antenne bearing a short, forwardly directed macro- cheta at its anterior upper angle, the third joint shorter than broad, rounded at the apex, arista bearing about six long bristles on the upper side and with about three shorter ones on the lower side; front slightly contracted at the lower end, two pairs of vertical bristles and two fronto-orbitals, the upper pair of the latter directed backward, the lower one forward, ocellar bristles located higher than the lowest ocellus; no postvertical bristles, front destitute of bristles other than those above mentioned; head in profile forming nearly an equilateral, acute-angled triangle, face convex, not retreating at the orai margin, bearing a transverse row of about six macrochetz a short distance above the oral margin and with two on each side of the face near the middle; cheeks about one-tenth as wide as the eyeheight, each bearing a stout macrocheta near its center, clypeus hidden, mouth opening very large, proboscis excessively large, enlarging outwardly, palpi slender and nearly linear; eyes bare; auxiliary vein obsolete apically, second basal 262 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL. cell united with the discal, anal cell wanting, costal vein extending beyond the apex of the fourth vein; legs destitute of stout macrochete. Type, the following species: PTILOMYIA ENIGMA, new species. Female: Black, the lower side of the third antennal joint and bases of tarsi yellow, halteres yellowish white; head, thorax, and scutellum opaque, dark-gray pruinose, abdomen slightly polished, very thinly brownish pruinose, ovate, composed of six segments, the first and sixth very short, the others subequal in length, each about three times as long as the sixth; wings whitish hyaline, first vein extending slightly beyond the small crossvein, apex of second vein slightly nearer to apex of first than to tip of third vein, first posterior cell slightly widening toward its apex, last section of the fourth vein nearly one and one-half times as long as the penultimate section, hind crossvein slightly shorter than the last section of the fifth vein. Length, 0.9 mm. A single specimen, collected at Bayamon in January. Type.—Cat. No. 4379, U.S.N.M. Family DROSOPHILID. STENOMICRA, new genus. Wings narrow. oblanceolate, the alulee wanting, the posterior margiu of the wing convex from base to apex, first vein reaching only to the branching of the second and third veins, small crossvein midway between this branching and the hind crossvein, the latter about eight times its own length from the apex of the fifth vein, penultimate section of the fourth vein about one-eighth as long as the last section, first posterior cell narrowed at its apex, second basal cell united with the discal, anal cell present, tip of second vein nearly midway between the apices of the first and third veins, costal vein prolonged beyond the apex of the fourth vein; ocelli situated near the center of the front, two pairs of vertical bristles and one fronto-orbital, the latter situated below the middle of the orbits, no ocellar nor postvertical bristles; second joint of antenn bearing a short, forwardly directed macrocheta near the upper outer corner, the third joint broader than long, rounded at the apex, arista bearing several long bristles on the upper side and with a few shorter ones on the lower side; face in profile slightly concave, projecting forward at the oral margin, vibriss distinct; mesonotum destitute of short bristly hairs, bearing two pairs of dorsocentral macrochetze, scutellum with a single pair; tibiz destitute of a pre- apical bristle. Type, the following species: STENOMICRA ANGUSTATA, new species. Head and its members yellow, the front and occiput opaque, thinly whitish pruinose, an ocellar dot black; mesonotum and scutellum NO. 1198. DIPTERA FROM PUERTO RICO—COQUILLETT. 263 brown, opaque, densely whitish pruinose; pleura, halteres, legs, and abdomen yellow, the latter in the female brownish at each end, in the male brown on the third and fourth segments; wings hyaline. Length, 1mm. Two specimens, collected at Bayamon and Utuado in January. Type.—Cat. No. 4380, U.S.N.M. CLADOCHA®TA, new genus. Antenne projecting obliquely forward and downward, nearly perpen- dicular, almost as long as the face, the second joint bearing a nearly erect macrocheta at the middle of the upper side and with a smaller, forwardly directed one at the anterior upper angle; third joint scarcely longer than the second, as wide as long, the arista inserted near its base, bare, near the base of the upper side bearing a single bristle which is almost half as long as the arista proper; front bearing two pairs of vertical bristles, one pair of postvertical and one of ocellar, two pairs of orbital bristles, placed one behind the other, the lower pair only slightly below the middle of the front and directed forward, the other pair directed outward and backward, a very small back- wardly directed one between the lower one and the eye; on each side of the middle of the lower half of the front are four or five pairs of short bristles directed inward; head at lower part longer than at insertion of antenne; face in profile strongly concave, vibrisse well developed; eyes nearly bare, slightly higher than long; cheeks about one-ninth as wide as height of eye, proboscis short, very robust, palpi clavate; legs rather short and slender, nearly bare, each tibia bearing an erect preapical bristle on the outer side, front femora bearing a row of bristles on the upper and under sides; auxiliary vein becoming obsolete beyond its middle, first vein scarcely reaching beyond the first fifth of the length of the wing, apex of second vein over twice as far from the apex of the first vein as from the tip of the third, the latter at the extreme wing-tip, fourth vein outwardly diverging from the third, hind cross- vein slightly more than its own length from the apex of the fifth vein, small crossvein slightly before the middle of the discal cell and far beyond the apex of the first vein, penultimate section of the fourth vein only slightly more than half as long as the last section, second basal cell united with the discal, anal cell present, the sixth vein not pro- longed beyond the apex of the latter. Type, the following species: CLADOCHAETA NEBULOSA, new species. Male and female: Head opaque, yellow, the front, except the orbits, brownish yellow, ocellar dot brown, eyes brownish red, antennz brown, the first two joints yellow, palpi and proboscis yellow; thorax dark yellow, subopaque, thinly gray pruinose, two pairs of dorsocentral macrochete, the bristly hairs between them numerous and not dis- tinetly arranged in rows; three pairs of supra-alar bristles, one priesu- tural, two posthumeral, one humeral, and two sternoplural; scutellum dark yellow, the margin lighter, bare except for the four marginal 264 PROCEEDINGS. OF THE NATIONAL MUSEUM. VOL. XXII. macrochete; abdomen reddish brown, somewhat polished; wings gray- ish, the costal margin to a little beyond the third vein smoky brown, darkest in apex of the marginal cell, both crossveins clouded with brown; the costal vein extends to the apex of the fourth vein; legs and halteres pale yellow. Length,1to1.2mm. One male and four females collected at Bayamon, Mayaguez, and A guadilla in January, and Arroyo and Vieques Island in February. Also, a single specimen collected at Motzorongo, Mexico, in January, 1892, by Prof. Herbert Osborn. Type.—Cat. No. 4381, U.S.N.M. DROSOPHILA FUNEBRIS Fallen. Eleven specimens, captured at Bayamon, Mayaguez, and Utuado in January. A Huropean species, which also occurs over the greater portion of the United States. DROSOPHILA VITTATA Coquillett. A single specimen, captured at Arroyo in February. The type locality of this species is Charlotte Harbor, Florida. DROSOPHILA FUSCA, new species. Brown, the halteres and legs, including the coxe, yellow; front slightly polished, destitute of short hairs, not pruinose, two pairs of orbital bristles, one placed in front of the other; body noticeably polished, not pruinose, two pairs of dorsocentral macrochetz, the short bristly hairs between them not disposed in rows; wings hyaline, apex of second vein nearly twice as far from the apex of the first as from that of the third vein; last section of the fourth vein almost twice as long as the preceding section; last section of fifth vein two-thirds as long as the penultimate section of the fourth; costal vein prolonged to the apex of the fourth vein. Length,1 mm. A single specimen, col- lected at Utuado in January. Type.—Cat. No. 4382, U.S.N.M. - Family GEOMYZIDA. ANTHOMYZA NIGRIMANA, new species. Frontal triangle polished black, reaching almost to the lower end of the front and filling the space between the frontal orbits, the latter, on the upper portion to the single pair of fronto-orbital bristles, polished black, remainder of front opaque, brown, the lower corners yellow; face less than one-fourth as broad as the front at its middle, yellow; first two joints of antenne brownish yellow, the third yellowish white, arista brown, greatly thickened at the base, rather densely and long plumose; proboscis yellow, palpi brown, occiput and body polished black; legs, including the coxe, yellow, the front tibix and first three joints of their NO, 1198. DIPTERA FROM PUERTO RICO—COQUILLETT. 265 tarsi black; wings hyaline, halteres whitish, the knobs longer than the stems. Length, 1.2 mm. Three specimens, collected at Utuado and Mayaguez in January. Type.—Cat. No. 4383, U.S.N.M. Family OSCINID 4. GAURAX LANCIFER, new species. Yellow, the antennal arista, an ocellar dot, a somewhat lanceolate spot on the posterior half of the mesonotum, an oval spot on the pos- terior lower corner of the mesopleura, usually one on the lower part of the pteropleura, and the dorsum of the abdomen except at its base, black; mesonotum polished, marked with three reddish-yellow vittz, scutellum in outline nearly triangular; wings hyaline. Length, 1.5 to 2 mm. Hight specimens were bred in February from larve infesting the egg-sacs of a spider at San Juan. Also, five specimens, bred by Mr. H. G. Hubbard, March 16, 1894, from larve infesting the egg-sacs of a Spider at Montserrat, West Indies. Type.—Cat. No. 4384, U.S.N.M. HIPPELATES CONVEXUS Loew. Thirty-four specimens, collected at Mayaguez, Bayamon, Utuado, and Aguadilla in January, and Fajardo, Arroyo, and Vieques Island in February. The species was originally described from Cuba, but also occurs in the southern portion of the United States and in Mexico. Three specimens from the last-named country were collected April 10, 1898, by Dr. L. O. Howard, at San Jose de Guaymas. HIPPELATES PUSIO Loew. Eighteen specimens, from Mayaguez, Bayamon, and Aguadilla in January, and Fajardo and Arroyo in February. It was originally described from Texas, but ranges as far northward as New Bedford, Massachusetts. HIPPELATES FLAVIPES Loew. Five specimens, from Fajardo and Vieques Island in February. The species was originally described from Cuba, but occurs in this country as far northward as Franconia, New Hampshire; this appears to be the most northern limit of any species belonging to the present genus. The specimens from St. Vincent, West Indies, which Dr. Williston refers to H. flavipes, evidently belong to some other species, since flavipes belongs to his own subgenus Siphomyia, whereas he referred his speci- mens to Hippelates as restricted. HIPPELATES TENER, new species. Head reddish yellow, the sides of the vertex brown, the occiput, except the lower portion, black; frontal triangle polished dark brown, widely 266 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. separated from the eyes and reaching about to the middle of the front, rounded below, front outside of the triangle sparsely covered with bristly hairs; antenne yellow, upper edge and apex of the third joint black, arista dark brown; palpi and proboscis yellow, apical portion of the latter black, labella slender, folded back; mesonotum dark brown, somewhat polished, but sparsely covered with an appressed yellowish tomentum, one pair of small dorsocentral macrochete, the bristly hairs not arranged in rows; pleura reddish yellow, a brown spot on the sterno- pleura and another above the hind cox; scutellum yellow, metanotum and abdomen polished brown; legs yellow and brownish, bases of tarsi yellow; wings hyaline; halteres yellowish white. Length,1.5mm. Six specimens, collected at Utuado in January, and Fajardo in February. Type.—Cat. No. 4385, U.S.N.M. OSCINIS ANONYMA Williston. Forty-nine specimens, collected at Mayaguez, Bayamon, Utuado, and Aguadilla in January, and Fajardo, Arroyo, and Vieques Island in February. Originally described from St. Vincent, West Indies. OSCINIS VIRGATA Coquillett. Seven specimens, from Bayamon, Utuado, and Aguadilla in January, and Vieques Island in February. The species was originally described from Colorado. OSCINIS QUADRILINEATA Williston. Three specimens, taken at Bayamon and Mayaguez in January, and Fajardo in February. Originally described from St. Vincent, West Indies. OSCINIS OBSCURA, new species. Black, the labella, halteres, under side of the abdomen, apices of femora, front and middle tibix, both ends of the hind ones, and the tarsi except at their apices, yellow; base of abdomen sometimes yellow- ish; frontal triangle polished, almost touching the eyes at the vertex, reaching the lowest third of the front; labella slender, pointed. folded back; mesonotum and scutellum somewhat opaque, thinly brownish pruinose, no dorsocentral macrochete, pleura and abdomen polished ; wings hyaline, apex of the second vein midway between the apices of the first and third. Length, 1 to 1.5mm. Seventeen specimens, col- lected at Mayaguez, Bayamon, and Utuado in January, and Vieques Island in February. Type.—Cat. No. 4386, U.S.N.M. OSCINIS COXENDIX Fitch. Ten specimens, from Mayaguez, Bayamon, and Utuado in January, and Fajardo in February. This species also occurs from New Hamp- shire to Florida, and westward to Colorado. NO. 1198. DIPTERA FROM PUERTO RICO—COQUILLETT. 267 OSCINIS NANA Williston. Nine specimens, collected at Mayaguez, Utuado, and Aguadilla in January, and Arroyo and Vieques Island in February. Originally described from St. Vincent, West Indies. * OSCINIS UMBROSA Loew. Nine specimens, taken at Mayaguez, Bayamon, Utuado, and Agua- dillain January. This species was originally described from Pennsyl- vania, and the U. S. National Museum contains specimens collected in the District of Columbia and Indiana. CHLOROPS TRIVITTATA Williston. A single specimen, captured at Arroyo in February. The species was originally reported from St. Vincent, West Indies. SIGALOESSA BICOLOR Loew. One specimen, taken at Fajardo in February. The type locality of this species is Cuba. Family AGROMYZID. DESMOMETOPA HALTERALIS, new species. Black, the bases of the tarsi yellow, a yellow spot between the anten- ne and a densely gray pruinose one on the lower edge of the face; front wholly polished, proboscis slender, horny, the labella nearly as long as the proboscis proper and folded back; thorax and scutellum polished, two pairs of dorsocentral macrochete; abdomen subopaque, the sides and the fifth and following segments polished; wings white, costal and first veins yellow, the others white, first posterior cell narrowed at its apex. Length, 2 to2.5mm. A single specimen captured at Utuado in January; also seven specimens, collected at New Bedtord, Massa- chusetts (Dr. Garry de N. Hough), Lake Worth, Florida (Mrs. A. T. Slosson), New Mexico (Prof. T. D. A. Cockerell), and Colorado (Mr. Carl F. Baker). Type.—Cat. No. 4387, U.S.N.M. AGROMYZA ANEIVENTRIS Fallen. Nine specimens, collected at Utuado, Bayamon, Aguadilla, and Mayaguez in January, and Fajardo in February. This is a European species which also occurs over the greater portion of the United States. AGROMYZA NEPTIS Loew. Two specimens, from Aguadilla and Mayaguez in January. This species was originally described from Nebraska; the U. S. National Museum contains specimens from several other localities, ranging from Massachusetts to Florida and Texas. 268 PROCKEDINGS OF THE NATIONAL MUSEUM, VOU. xx. AGROMYZA SETOSA Loew. A single specimen, captured at Utuado in January. This species was originally reported from the District of Columbia, mG 2 occurs over the greater portion of the United States. AGROMYZA JUCUNDA van der Wulp. Two specimens, collected at Utuado and Mayaguez in January. Originally reported from Wisconsin, but now found in nearly every State in this country, and Williston reports it from St. Vincent, West Indies, describing it as a supposed new species under the name of Agromyza lateralis, new species. The latter name was used by Macquart for a European species as long ago as the year 1835.! AGROMYZA DIMINUTA Walker. A single specimen, captured at Fajardo in February. ‘This species was originally reported from the United States without mention of any more definite locality. It is found over the greater portion of our country. LOBIOPTERA INDECORA Loew. A single specimen, collected on Vieques Island in February. Origi- nally reported from Nebraska, it also occurs in the eastern part of this country, ranging from New Hampshire to Georgia. OPHTHALMOMYIA LACTEIPENNIS Loew. One specimen, collected at Bayamon in January. The type locality of this species is Cuba, but specimens are in the U.S. National Museum which were collected at different points in this country, ranging from the District of Columbia to Florida, and westward to New Mexico; it has also been reported from St. Vincent, West Indies. OPHTHALMOMYIA CINEREA, new species. Head black, opaque, gray pruinose, antenne black, the lower por- tion of the base of the third joint yellowish, palpi yellow, proboscis black, the labella yellowish, rather robust, and only slightly prolonged; thorax and scutellum black, opaque, gray pruinose, mesonotum marked with five black vitte, of which the median one is prolonged almost across the scutellum, bristly hairs of mesonotum arising from minute black dots, front end and lower portion of the pleura almost destitute of the gray pruinosity; abdomen subopaque, brownish black; legs brownish black, halteres light yellow, wings whitish, the costal and first veins yellowish, the others white. Length,1.5mm. A single specimen, collected at Bayamon in January. Although aberrant in its markings, this species possesses all of the important structural characters of the preceding. ToD —Cat. No. 4388, U.S.N.M. nose Nat. a5 Tae ae, II, p. 609. No. 1198. ' DIPTERA FROM PUERTO RICO—COQUILLETT. 269 CERATOMYZA DORSALIS Loew. Two specimens, collected at Arroyo and Vieques Island in February. This species was originally reported from the District of Columbia, but occurs over the greater portion of this country, extending as far westward as Colorado. LEUCOPIS BELLA Loew. Three specimens, bred February 2, from larve preying upon Dactyl- opius citrt on Culebra Island. Originally described from Cuba, but having a wide distribution, extending from Nova Scotia to California and Mexico. . Family BORBORID. LIMOSINA FONTINALIS Fallen. Nineteen specimens, from Bayamon, Utuado, and Mayaguez in Jan- uary, and Arroyo and Fajardo in February. A European species, which also occurs in the District of Columbia and has been reported from Florida by Mr. C. W. Johnson. LIMOSINA VENALICIUS Osten Sacken. Two specimens, collected at Utuado in January. This species was originally described from Cuba, but also occurs at Biscayne Bay, Flor- ida, and has been reported from St. Vincent, West Indies, Brazil, and Africa. Osten Sacken referred it to the genus Borborus, in which genus it is retained by Williston, but it is a typical Limosina, as is also the Borborus illotus of Williston. LIMOSINA LUGUBRIS Williston. Two specimens, taken at Aguadilla and Utuado in January. This species was originally reported from St. Vincent, West Indies. LIMOSINA PERPARVA Williston. Three specimens, collected at Mayaguez and Utuado in January and Culebra Island in February. This species was also originally reported from St. Vincent. Family HIPPOBOSCID. ORNITHOMYIA ERYTHROCEPHALA Leach. Hight specimens, captured on a sparrow hawk at Adjunctos in Jan- uary; also a Single specimen, collected at Culebra Island in February. This species was originally described from Brazil, but occurs over a large portion of the Western Continent, having been reported by Osten Sacken as occurring as far northward as Quebec, Canada. bo =] © S by S S & S 2 1 @> | & Ss Es) ie ea g S eI 5 “AN len! 5 ~” a 5 Family NYCTERIBID 4%. TRICHOBIUS DUGESII Townsend. Sixty-two specimens, collected on bats in a cave near Bayamon in January. The species was originally described from Mexico, and the U.S. National Museum contains specimens collected by Mr. H. F. Wickham at Tucson, Arizona, and by Mr. H. G. Hubbard near Kingston, Jamaica. ASPIDOPTERA BUSCKII Coquillett. A single specimen representing this genus and species was collected with the preceding specimens. PTERELLIPSIS ARANEA Cogquillett. Twenty-three specimens, collected with the preceding. This species was originally reported from Jamaica and Montserrat, West Indies. THE DECAPOD CRUSTACEANS OF WEST AFRICA. By Mary J. RATHBUN, Second Assistant Curator, Division of Marine Invertebrates. This paper was prepared.at the request of Prof. O. F. Cook, for the help of collectors and students on the west coast of Africa, and it was his intention to publish it as an appendix to his report of work done for the New York State Colonization Society. The preparation of that report having been unavoidably delayed, it was thought best to publish this portion while it is complete. The region covered extends on the continent from Senegal to Portuguese West Africa, inclusive, or from the River Senegal at about 16° north latitude to the River Kunene at 17° south latitude. It includes the fresh waters tributary to this coast and the islands in the Gulf of Guinea, namely, Princes Island, St. Thomas, and Rolas. A comparison of the ranges of the species found in this area empha- sizes the relation of the fauna to those of America and Europe rather -than to the fauna of South and East Africa. Of the 152 species enumer- ated, 40 occur also in some of the islands west and northwest of Africa— the Azores, Madeiras, Canaries, Cape Verde Islands, Ascension Island, or St. Helena—24 species have been recorded from the Atlantic coast of America, 25 from Europe or the Mediterranean, 8 are South African, 5 East African, 6 extend to the west coast of America, while 15 occur in the oriental region. The widespread species, Planes minutus, Grapsus grapsus, and Pachygrapsus transversus are excluded from the foregoing count. More than half the species of the list are known to the writer only from descriptions. Professor Cook and his colleagues have extended the range of several species, and have added one, Clibanarius cooki, to those hitherto known The classification used in this paper is chiefly, but not wholly, that of Claus in the Grundziige der Zoologie. The key to families is made up partly from definitions in that work, and largely from those in Stebbing’s History of Crustacea. PROCEEDINGS U. S. NATIONAL Museum, VOL. XXII—No. 1199. bo =| = 272 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII, KEY TO THE SUBORDERS, TRIBES, AND FAMILIES OF THE ORDER DECAPODA, F REPRESENTED ON THE WEST COAST OF AFRICA. A. Body short, with the carapace usually wide and triangular, rounded or quadrate, and the sternal surface excavated and covered by the abdomen, which is folded forward and narrow in the males, but wide in the sftemiales sae eee eee eee ee ae Suborder BRACHYURA. B. Branchizw not more than nine. C. Buceal frame quadrate; efferent branchial channels opening at sides of endostome. D. Carapace quadrilateral. Frontal region curved downward. Verges of male inserted either in sternal plastron or in basal joints of fifth pair of legs, thence passing through channels in sternum ibeneathvabdomeneese sees are eras eee Tribe CATOMETOPA. E. Carapace hard and firm. Front, orbits, and eyestalks not very small. Buccal frame quadrate anteriorly. F. Carapace moderately convex or depressed; branchial regions not greatly dilated. ; G. Third maxillipeds with fifth joint articulated at the front inner angle usually. Front of moderate width or very narrow. EHye- stalks often greatly elongate...........--- Family OCYPODID. G’. Third maxillipeds with fifth joint articulated at apex or front outer angle of fourth. Front usually broad. Eye-stalks of moderate BEZen A? oh Chum aM nynaRh tcc ie eatin Soh OR In eRe Family GRAPSIDA. }’. Carapace very convex, especially dilated over and in front of the branchial regions; antero-lateral margins entire and strongly arcuate. Seventh joint of walking legs often armed with longi- tudinal rows of spines. Land crabs..... Family GECARCINIDA. E’. Carapace more or less membranaceous. Front, orbits, and eyestalks very small. Buccal frame arcuate anteriorly. Species of small size, and may be found in shells of bivalve mollusks, tests of sea- urchins, and tubes of annelids~.-_-...--- Family PINNOTHERID®. D’. Carapace not quadrilateral. Male genital openings on the basal joint of the fifth pair of legs. E. Carapace broad, short, rounded anteriorly, without projecting frontal POSURE Se Use ean See ey tarets re eee ee ttre Tribe CYCLOMETOPA. F. Buccal cavity well defined. Antennule folded transversely or ob- liquely transversely. G. Carapace convex. Terminal joint of last pair of legs not fiatly expanded. H. Terminal joint of the last pair of legs usually spinuliferous. Species fluviatile or living in damp earth away from the sea. Family POTAMONID®. H’. Terminal joint of last pair of legs usually unarmed. Species MUM DTN © sss ee Sk A SN a ah ee ee Family PILUMNID#. G’. Carapace depressed, widest at the last antero-lateral marginal spine. Usually from 5 to 9 antero-lateral teeth or spines. _ Ter- minal joint of last pair of legs usually flatly expanded. Family PORTUNID. F’. Buccal cavity not sharply defined, the third maxillipeds usually extending over its anterior margin. Antennule folded longi- buvdinalliliy pps Seer Amey ee ees Se eee cena Family CANCRIDA. E’. Carapace usually triangular, with projecting pointed rostrum. Tribe OXYRHYNCHA. F. Basal joint of antennz well developed, inserted beneath the eves and usually forming a great part of the infra-ocular space. Family MAILDa. NO. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. oS F’. Basal joint of antenne very small, and with the next joint embedded in the narrow gap between the front and the inner orbital AMO Cee er cesieesm epsom eee se ae Family PARTHENOPID &. C’. Buccal frame usually triangular, narrowed forward. Efferent channels opening at middle of endostome. Male genital openings on the basal joint of the last pair of legs....-.--. Tribe OXYSTOMATA. D. Last one or two pairs of feet not articulated higher up than the preceding pairs. E. Afferent channels to the branchiz opening behind the pterygostomian regions and in front of the chelipeds. F. Fifth and following joints of the third maxillipeds not wholly con- cealed by the fourth joint..--...-.-....... Family CALAPPIDA. F’. Fitth and following joints of the third maxillipeds concealed behind the triangular acute fourth joint.......-_-- Family.MATUTID&. E’. Afferent channels to the branchi not in front of bases of chelipeds, but at the antero-lateral angles of the endostome. Family LEUCOSIIDA. D’. Last one or two pairs of feet articulated higher up than the preceding pairs. K. Afferent channels to the branchiz in front of bases of chelipeds. Family DORIPPIDA. HK’. Afferent channels to the branchiz not in front of bases of chelipeds. Pleon short, not folded under the carapace. Family RANINID A. B’. Branchiew more than nine.----- a possi aE Yate Ws Sil nna as eae ae Tribe ANOMALA. C. Last one or two pairs of feet subdorsal, often prehensile, for carrying a shell, sponge, or leaf over the body as a means of concealment. Family DROMID&. A’. Body elongate, with the abdomen or pleon usually well developed, longer than the carapace, and extended, or partially so, never closely reflexed against phesbermuny jess ssa! sop seen Suborder MACRURA,. B. Body not compressed. Rostrum depressed, often wanting. First abdominal segment shorter and narrower than the following. Abdominal appendages not oar-shaped. The articulation between the car- pus and propodus at two fixed points. C. Abdomen with hard integument, tapering, and recurved from the middle, and without a swimming fan. Second to fifth pairs of legs short and wide, with terminal joint wide, curved outwardly for swim- ming and digging in the sand...--........---- Tribe HIPPIDEA. Family HIPPID 2. C’. Abdomen sometimes sott; when hard it is usually provided with a swimming fan. Second to fifth pairs of legs not wide nor with terminal joint flattened and curved for swimming and digging. D. Abdomen or pleon usually soft and membranaceous and spirally twisted. Carapace weak or membranaceous behind the cervical groove. Chelipeds and two following pairs of legs well developed, the last two pairs small, one or both being usually chelate. Tribe PAGURIDEA. K. First antennze with peduncle elongate, first joint as long as eyestalks. Second antennze with peduncle compressed. Hermit crabs HANI SH eres es We aay a ee Naa eC Re a ea Family Ca:NOBITID. KE’. First antenn with peduncle of moderate size, first joint short and stout. Second antenne with peduncle subcylindrical. Hermit crabs. Family PAGURIDZ. _D’. Abdomen or pleon with firm integument. Carapace not weak behind the - cervical groove. Proc. N. M. vol. xxii 18 Ze PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. E. Pleon with segments not overlapping. Rostrum minute orabsent. Car- apace short. First pair of legs chelate. Eyes small. Burrow- DIVO STAND Sine es ale eee ese eer rer eee Tribe THALASSINIDEA. Family CALLIANASSID. kK’. Pleon with segments overlapping. F’. First pair of legs simple or only subchelate. Carapace with yery thick INGE SUITS TILER Ne ean Ae MEL shih dee. ARAN Tribe LoricaTa. G. Carapace subcylindrical; external antenne very long and rigid. CA Syomony NOSE 4.5506 so5d55 bobece os oaee Family PALINURID&. - G’. Carapace flattened; external antenne flat, short, squamiform. Family SCYLLARID A, E’. First pair of legs chelate. Carapace with moderately firm integument. Tribe PORCELLANIDEA. Family PORCELLANID 2. B’. Body more or less compressed. Rostrum usually compressed. Pleon elongate, not inflexed; appendages oar-shaped. Articulation between the carpus ‘and propodus at only one fixed point. Tribe CARIDEA. Cc. First three pairs of legs chelate; rostrum laterally compressed. Family PENZIDA. C’. First three pairs of legs not all chelate. © D. Rostrum long; first and second pairs of legs chelate; last three pairs simple. EK. Second pair of legs with carpal joint undivided. Sometimes fluviatile. Family PALZMONIDA. K’. Second pair of legs with carpal joint divided into segments. Family HIPPOLYTIDA. D’. Rostrum very small] or absent. EK. Eyestalks short, more or less covered by the projection of the front margin of the carapace; first pair of legs robustly chelate, sometimes unsymmetrical; second pair long and_ slender, MMR! OMENS caccaccesoaacoosedede sco5ée Family ALPHEIDA. kK’. Eyestalks not covered by the front margin of the carapace. I. First and second pairs of legs distinctly chelate, with spoon-shaped inoexenes. | Shp NaleNAls\. se oboe csan dose coSuns ocaeds Family aryIpé. I’. First and second pairs of legs more or less chelate. Fingers not spoon- shaped=) Manin esisetce sacs een nee: Family CRANGONID. Suborder BRACHYURA. Tribe CATOMETOPA. Family OCYPODID A. KEY TO THE WEST AFRICAN GENERA OF THE FAMILY OCYPODIDA. A. Carapace quadrate; sides entire; front narrow; orbits occupying nearly the whole width of the carapace. B. Eye peduncles large; chelee in male somewhat unequal_.......-_.. Ocypode. B’. Eve peduncles slender; chele in male extremely unequal...._......--. Uca. A’. Carapace with arcuate anterior margins; front and orbits of moderate width. B. Antero-lateral margins distinctly dentate..........-..-......-- Pilumnoplax. B’. Antero-lateral margins obscurely lobate...._...-...-....--.- Typhlocarcinus. No, 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. 275 Genus OCYPODE Fabricius. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS OCYPODE. Pree ENessLerminabed: byea SOT Sbyle ener erie = (a\alar= Sen ele teai eens eas ippeus. Ne wesmwiin out mbermimalystylececsarns tsetse cen seie orseceia eee ee eo oa africana. OCYPODE IPPEUS Olivier. Ocypode ippeus OLIVIER, Voy. Empire Ottoman, IV, 1804, p. 52; Atlas, Pt. 2, pl. XONONG ET Orage Ocypode cursor MILNE-EDWARDSs, Ann. Sci. Nat. (3), Zool., XVIII, 1852, p. 142 (= ? Cancer cursor Linneus). Range.—Greece (Guérin); Syria (Olivier); Egypt (Lamarck); African coast of the Mediterranean (Desmarest); West African coast. West African localities.—Cape Verde Islands (Stimpson, Miers, Stu- der); Cape Verde (Milne-Edwards); Senegal (Kingsley); Rufisque, Senegal (Hilgendorf); Dakar, Senegal (O. F. Cook); Mouth of Mesu- rado River, Monrovia (O. F. Cook); Liberia (Studer); Acra d’Elmina (de Man); St. Thomas, at Iogo-Ilogo, Diogo Nunes, Praia das Conchas, Praia Almoxarife (Osorio); St. Thomas (Vieira, teste Osorio); Ile du Prince (Osorio); Kongo coast (de Man, Studer); St. Paul de Loanda (Studer, Benedict); Angola, at Benguella, Novo Redondo and Lobito (Osorio). OCYPODE AFRICANA de Man. Ocypode africana DE MAN, Notes Leyden Mus., III, 1881, p. 253. Ocypode hexagonura HILGENDORE, SB. Ges. Natur. Freunde Berlin, 1882, p. 23. Ocypode edwardst Osorio, Jor. Sci. Lisboa (2), IT, 1890, p. 48. West African localities.—Rufisque, Senegal (Hilgendorf); Mouth of Mesurado River, Monrovia (O. I’. Cook); Liberia (Hilgendorf); Grand Cape Mount, Liberia (de Man); [le du Prince (Osorio); Kongo coast (de Man); Loango (Hilgendorf); Muserra (de Man). Genus PILUMNOPLAX Stimpson. PILUMNOPLAX SULCATIFRONS ATLANTICA Miers. Pilumnoplax sulcatifrons var. atlantica Mrers, Ann. Mag. N. H. (5), VIII, 1881, p. 259. West African locality—Goree Bay, Senegambia, 9 to 15 fathoms (Miers). Genus TYPHLOCARCINUS Stimpson. TYPHLOCARCINUS INTEGRIFRONS Miers. Typhlocarcinus integrifrons MiERS, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 260, pl. xiv, fig. 1. West African localityx—Goree Bay, Senegambia, 9 to 15 fathoms (Miers). Genus UCA Leach. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS UCA. MwOarapace buberculaterpiromtmarrow 2:22 0220. 2.022 2222) 0225 2s ee tangert. AVM OArA pace smooth front DrOadiece “oe o.5- 22 leeds eee ace ee eee sees mordax. 276 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. UCA TANGERI (Eydoux). Gelasimus tangeri EyYDOUX, Mag. de Zool., 1835, Cl. VII, pl. xiv. Gelasimus perlatus HERKLOoTS, Addit. Fauna Afr. Occ., 1851, p. 6, pl. 1, fig. 3. Gelasimus cimatodus ROCHEBRUNE, Bull. Soe. Philom. Paris (7), VU, 1883, p. 171. Uca tangieri ORTMANN, Zool. Jahrb., Syst., X, 1897, p. 356. The perlatus form of this species differs from typical tangert only in the great reduction of the larger cheliped of the male and its compara- tive smoothness, there being no tubercular ridges on the inner side of the palm. The single male of perlatus in the U.S. National Museum collection, from St. Paul de Loanda, appears to be an aborted tangert. Range.—From Portugal (Capello, Osorio), to north and west coasts of Africa, as far as Algiers and Angola; West Indies (Miers); ? Bahia (Kingsley). ; West African localities.—Rutisque, Senegal (Hilgendorf); Dakar, (O. F. Cook); Goree Bay, 9 to 15 fathoms (Miers); Sierra Leone (Miers) ; Rock Spring, Monrovia (O. F. Cook); mouth of Mesurado River (O. F. Cook); Liberia (Hilgendorf); Grand Bassam (Studer); Guinea (Kings- ley); Beyah River, Ashantee (Benedict); near Boutry, Guinea (Herk- lots); Lagos (Studer); Bibundi, Kamerun (Aurivillius); St. Thomas, at Iogo-Iogo, and Praia Almoxarife (Osorio); Ogove (Thallwitz); Chinchoxo (Hilgendorf, Studer); mouth of the Kwilu River (Berlin Mus.); mouth of the Kongo (Studer); Loanda (Hilgendorf, Studer); St. Paul de Loanda (Benedict); Barre du Dande, Benguella and Lobito (Osorio); ‘ Les deux Mamelles” and “Coté des Maringouins pointe des Chameaux” (Rochebrune). UCA MORDAX (Smith)? Gelasimus mordax SMITH, Trans. Conn. Acad. Sci., 11, 1870, p. 135, pl. 11, fig. 3; pl. IV, figs. 4, 4a. Range.—Bahamas to Rio de Janeiro. West Africa? West African locality—Liberia (O. F. Cook, collector); one small but mature female. This single specimen is very like females of Uca mordax from America. Its identity can not be determined with certainty until the male is discovered. Dimensions.—Length, 8.6 mm.; width, 12.6 mm. Family GECARCINID 4s. KEY TO THE WEST AFRICAN GENERA OF THE FAMILY GECARCINID. A. Palpus of the outer maxillipeds inserted on the inner face of the third joint near its summit and concealed under the joint. ..-.--. SUN CLS ayes Ses Gecarcinus. A’. Palpus of the outer maxillipeds inserted at the external angle of the third joint andiexposed: tonvde Wiens eee ee seen ere ae secrete sisi ciai eleereeieeets Cardisoma. NO. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. DUT Genus GECARCINUS Leach. GECARCINUS LAGOSTOMA Milne-Edwards. 2 Or Gecarcinus lagostoma MILNE-EDWARDS, Hist. Nat. Crust., I, 1837, p. 27. Range.—Australasia (Milne-Edwards, Miers); South and West Africa; Bermuda? (Miers). African localities.—West Atrica (Miers); St. Thomas and Rolas (Greeff, as ruricola; Osorio, as ruricola); Benguella, Angola (Osorio) ; Cape of Good Hope (Miers); Ascension Island (Drew, Miers, Benedict, Ortmann). Genus CARDISOMA Latreille. CARDISOMA ARMATUM Herklots. Cardisoma armatum HERKLOTS, Addit. Fauna Afr. Occ., 1851, p. 7, pl. 1, figs. 4, 5. West African localities.—St. Jago, Cape Verde Islands (Stimpson, as U. gquanhumt), Cat. No. 2037, U.S.N.M.; Porto Praya, St. Jago, Cape Verde Islands (Miers); Rufisque, Senegal (Hilgendorf); Dakar, Senegal (O. F. Cook); St. George del Mina, and near Boutry, Guinea (Herklots); Lagos (Ortmann, as C. guanhumi), Bibundi, Kamerun (Aurivillius); St. Thomas and Rolas (Greeff, as C. guanhumt); Ribeira Peixe, St. Thomas (Osorio); Ogove (Thallwitz); Benguella, Novo Redondo, Lobito, and Koroka River (Osorio). Family GRAPSID. KEY TO THE WEST AFRICAN GENERA AND SUBGENERA OF THE FAMILY GRAPSID&. A. Antenne covered by the front. B. External maxillipeds without a piliferous ridge. C. Antenne excluded from the orbit. D. Merus of maxillipeds as long as ischium ..---.-.----.-----:.-.- Goniopsis. D’. Merus of maxillipeds shorter than ischium ..---.--..------1 Metopograpsus. C’. Antenne entering the orbit. Dy Merus of maxillipeds longer than’ broad 2255.--22. 5-2 -2-2-- 22. Grapsus. D’. Merus of maxillipeds as broad as long. Ei. Outer surface of palm of large chela quite flat, and prolonged proximally Ibe yon dathes wet ste ees ee eee nee Platychirograpsus. Kk’. Outer surface of palm not flattened and prolonged. Hea Carapacesloncersthanebroadges=-ese ae aeee eae meee ee Planes. 10M, CARRE ORCS) THELEN GIRYS Gacaas Googe aooo eoed coecad Sccea GGSe Pachygrapsus. B’. External maxillipeds with a piliferous ridge...-....---.-.----.----.- Sesarma. Oo ISIUOS CHOW TIO aceasta aa as Cane ee rE ane eee Subgenus Sarmatiwm. C’. Sides straight. D. Sides with a tooth behind orbital tooth. Manus with pectinated ridges DOVE See aye a eR a ee aa eR Subgenus Perisesarma. D’. Sides entire. f E. Manus without pectinated ridges above .-.......Subgenus Holometopus. kK’. Manus with pectinated ridges above ...-...----. Subgenus Parasesarma. A’. Antenne visible from above. B. Merus of maxillipeds large, as broad as ischium ..._.---..----.------ Plagusia. B’. Merus of maxillipeds small, much narrower than ischium ...--.-.----- Percnon. 273 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXU. Genus GONIOPSIS de Haan. GONIOPSIS CRUENTATA (Latreiile). Grapsus cruentatus LATREILLE, Hist. Nat. Crust., VI, 1803, p. 70. Grapsus (Goniopsis) cruentatus DE Haan, Fauna Japon., 1835, p. 33. Grapsus pelii HERKLOTS, Addit. Fauna Afr. Occ., 1851, p. 8, pl. 1, figs. 6, 7. Range.—Bahamas and Florida Keys to Rio de Janeiro; Bermudas; West Africa; west coast of Nicaragua (Kingsley). West African localities.—Dakar (O. F. Cook, collector); Rock Spring, Monrovia (O. F. Cook, collector); mouth of Mesurado River (O. F. Cook, collector); Liberia (von Martens); Ashantee (Benedict); Boutry, Guinea (Herklots); Princes Island (Osorio); St. Thomas, at logo-logo, Praia das Conchas, and Binda (Osorio); Gabun (Kingsley); Ogove (Thall- witz); Angola and Lobito (Osorio). Genus METOPOGRAPSUS Milne-Edweards METOPOGRAPSUS MESSOR (Forskal). Cancer messor FORSKAL, Desc. Anim. Itin. Or., 1775, p. 88. Metopograpsus messor MILNE-EDWARDS, Ann. Sci. Nat. (3), XX, 1853, p. 165. Range.—Oriental region; West Africa. West African localities.—Canaries (Brullé); St. Thomas (Osorio); Angola (Osorio). Genus GRAPSUS Lamarck. GRAPSUS GRAPSUS (Linnzus). Cancer grapsus LINN/ZUS, Sys. Nat., 10th ed., I, 1758, p. 630. Cancer (Grapsus) grapsus LATREILLE, Regne Anim. Cuvier, III, 1817, p. 16. Grapsus grapsus IVES, Proc. Acad. Nat. Sci. Phila., 1891, p. 190. Range.—Throughout the Tropics. West African localities.—Madeira (Dana, Stimpson); Canary Islands (Milne-Edwards); Cape Verde Islands (Dana, Stimpson, Miers, Bene- dict); Ascension Island (Miers, Benedict, Ortmann); Rufisque, Senegal (Hilgendorf); Liberia (de Man); St. Thomas Island, at Ribeira Peixe, Praia Almoxarife, Praia das Conchas, and Angolares (Osorio); Angola, at Benguella and Koroka River (Osorio). Genus PACH YGRAPSUS Randall. PACHYGRAPSUS TRANSVERSUS Gibbes. Pachygrapsus transversus GIBBES, Proc. Amer. Assoc. Adv. Sci., III, 1850, p. 181. Leptograpsus rugulosus MILNE-EDWARDS, Ann. Sci. Nat. (8), XX, 1853, p. 172 [138]. Range-—Bahamas and Florida Keys to Rio Janeiro; Bermudas; West Africa; Oriental region (Australia, New Zealand, Singapore, Tahiti); California; Gulf of California; Gulf of Fonseca; west coast of Central America; Peru; Galapagos Islands. : West African localities—Madeira (Stimpson, Miers); Cape Verde Islands (Miers, Benedict); Loanda (Hilgendorf ). This species is quite distinct from P. maurus Lucas (= Goniograpsus No. 1198. CRUSTACEANS OF WEST AFRICA—RATHBUN. 279 simplex Dana), which can be told most readily by its narrower cara- pace, with sides slightly converging posteriorly, and by the entire lower extremity of the meri of the last pair of feet. There is a specimen of P. maurus in the U.S. National Museum from Terceira, Azores, col- lected by William Trelease. It is also known from Algiers (type locality); Oran (Milne-Edwards); Madeira (Stimpson); Rio Janeiro (Dana, Heller). It is possible that Grapsus simplex Herklots, from Boutry, Guinea, is a synonym of Pachygrapsus maurus Lucas. Genus PLANES Leaeh. PLANES MINUTUS (Linnzus). Cancer minutus LINNZUS, Sys. Nat., 10th ed., I, 1758, p. 625. Planes clypeatus BowpDicH, Excursions in Madeira and Porto Santo, 1825, p. 15, pl. xu, figs. 2a, 2b. Planes minutus WHITE, List Crust. Brit. Mus., 1847, p. 42. Range.—In all tropical and temperate seas. West African localities—Canary Islands (Miers); Rio Gambia (Kingsley ). Genus PLATYCHIROGRAPSUS de Man. PLATYCHIROGRAPSUS SPECTABILIS de Man. Platychirograpsus spectabilis DE MAN, Zool. Anz., No. 506, 1896, p. 292; Jahrb. Hamburg. Wissen. Anst., XII, 1896, p. 97, pl. u1, figs. 4, 4a, b, d; pl. 1m, fig. 4c. Aspidograpsus typicus KROYER, manuscript (Copenhagen Museum). Range.—Mexico; West Africa. One specimen was received from the Mexican Commission at the World’s Columbian Exposition, 1893 (U.S.N.M.). Bay of Mexico, one male (Copenhagen Mus.). A claw of this rare species was discovered by the writer among a collection of deformed lobster claws in the museum at Halifax, Nova Scotia; its origin is unknown. West African locality.—Gabun (de Man). Genus SESARMA Say. Subgenus HOLOMETOPUS Milne-Edwards. KEY TO THE WEST AFRICAN SPECIES OF THE SUBGENUS HOLOMETOPUS. A. Upper margin of front concave and deeply four-lobed ......-.----------- robertt. A’. Upper margin of front straight and nearly undivided ....-_..---..------ elegans. SESARMA (HOLOMETOPUS) ROBERTI Milne-Edwards. Sesarma roberti MILNE-EDWARDS, Ann. Sci. Nat. (3), XX, 1853, p. 182 [148]. Sesarma americana Pocock, Ann. Mag. Nat. Hist. (6), III, 1889, p. 7. Not 8. americana Saussure. Sesarma bromeliarum RATHBUN, Proc. U.S. Nat. Mus., XIX, 1896, p. 143. Range.—West Indies: Haiti; Jamaica; Puerto Rico (Cat. No. 4801, Berlin Mus.); Laiou, Dominica (Pocock); Martinique (Paris Mus.); St. Lucia. West Africa. West African locality.—Goree, Senegal (Milne-dwards) 280 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL. XXII. SESARMA (HOLOMETOPUS) ELEGANS Herklots. Sesarma elegans HERKLOTS, Addit. Fauna Afr. Occ., 1851, p. 10, pl.1, fig. 10. —DE Man, Notes Leyden Mus., I, 1879, p. 69. West African localities—Near Boutry, Guinea (Herklots); Ogove (Thallwitz). Subgenus PARASESARMA de Man. KEY TO THE WEST AFRICAN SPECIES OF THE SUBGENUS PARASESARMA. A. Outer surface of hand perfectly flat and smooth......---...---.------ biittikoferi. A’. Outer surface of hand not perfectly flat and smooth .----.--..-.----- angolensis. SESARMA (PARASESARMA) BUTTIKOFERI de Man. Sesarma biittikoferi DE Man, Notes Leyden Mus., V, 1883, p. 163. West African localities.—Rock Spring, Monrovia (O. F. Cook, . collector); Fisherman Lake, Liberia (de Man); Gunk River, Liberia (U.S.N.M.); Bibundi, Kamerun, in brackish water at the mouth of the river Bekongolo (Aurivillius); river N’Dian, Kamerun, brackish water (Aurivillius); Ogove (Thallwitz). SESARMA (PARASESARMA) ANGOLENSIS Capello. Sesarma angolensis CAPELLO, Desc. tres esp. nov. Crust. Afr. Occ., Lisboa, 1864, p.4, fig.2; Mem. Acad. R. Sci. Lisboa, Cl. Sci. Nat., Nova Ser., II, 1865 Pt. 2. West African localities.—Grand Cape Mount, Liberia (de Man); Kamerun, at Bibundi on land, and river N’Dian, brackish water (Auri- villius); Ponte da Leuha, Kongo (Studer); Sea of Angola (Capello); Angola (Osorio). Subgenus PERISESARMA de Man. KEY TO THE WEST AFRICAN SPECIES OF THE SUBGENUS PERISESARMA. A. External surface of palm rising to an acute tubercle, situated near the external Inferior angle eee eS sae os ae ae eee eee kamermani. A’. External surface of palm regularly convexly arched...---..--..----- africanum. SESARMA (PERISESARMA) KAMERMANI de Man. Sesarma kamermant DE MAN, Notes Leyden Mus., V, 1883, p. 165. West African locality—Muserra, Kongo (de Man). SESARMA (PERISESARMA) AFRICANUM Milne-Edwards. Sesarma africana M1LNE- EpwWarbs, Hist. Nat. Crust., II, 1837, p.73; Ann. Sci. Nat. (3), XX, 1853, p. 185 [151]. Range.—Barbados (Paris Mus.); West Africa. West African localities—Senegal (Milne-Edwards); Rock Spring, Monrovia (O. F. Cook, collector); Liberia (de Man); Beyah River, Ashantee (Benedict); near Boutry, Guinea (Herklots); Ekundu and Bibundi, Kamerun (Aurivillius); Gabun (Paris Mus.); Ogove (Thall- witz); Benguella (Osorio). NO. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. 281 Subgenus SARMATIUM Dana. SESARMA (SARMATIUM) CURVATUM Milne-Edwards. Sesarma curvata MILNE-EDWARDsS, Hist. Nat. Crust., II, 1837, p. 75. Sesarma violacea HERKLOTs, Addit. Fauna Afr. Occ., 1851, p. 10, pl. 1, fig. 9.—pE Man, Notes Leyden Mus., II, 1880, p. 31. Metagrapsus curvatus MILNE-EDWARDS, Ann. Sci. Nat. (3), XX, 1853, p. 189 [155]. Sarmatium curvatum KINGSLEY, Proc. Acad. Nat. Sci. Phila , 1880, p. 212. West African localities—Senegal (Milne-Edwards); near Boutry, Guinea (Herklots); Boutry and Saccondi (de Man); Ogove (Thallwitz) ; Lobito (Osorio); West Africa (Kingsley). Genus PLAGUSIA Latreille. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS PLAGUSIA. A. Carejpeee umlsronileW 322s ae aS ese Se celes sees nes Se aeess cease e eee Caesar depressa. ANY, (Canny neies iinOKon NES SAE tee ee ee el ele eee Ones ne ae Atte Bae a eee delaunayi. PLAGUSIA DEPRESSA (Fabricius). Cancer depressus FABRICIUS, Sys. Ent., 1775, p. 406. Plagusia depressus Say, Jour. Acad. Nat. Sci. Phila., I, 1817, p. 100. Range.—From Charleston, South Carolina, to Brazil; from the Med- iterranean to St. Helena and South Africa. African localities—Madeira (Osorio); Cape Verde Isiands (Osorio) ; St. Vincent, Cape Verde Islands (Miers); Rufisque, Senegal (Hilgen- dort); Senegambia (Herklots, as P. squamosa); Liberia, Saccondi and Acra d’Elmina (de Man); Beyah River, Ashantee (Benedict); near Boutry, Guinea (Herklots, as P. sywamosa); St. Thomas Island (Osorio) ; Angola (Osorio); Natal (Herklots, as P. squamosa). PLAGUSIA DELAUNAYI Rochebrune. Plagusia delaunayi ROCHEBRUNE, Bull. Soc. Philom., Paris (7), VII, 1883, No. 4, p. 172. West African localities.—lIle aux Chiens, Albreda; Gambia (Roche- brune). Genus PERCNON Gistel.! PERCNON PLANISSIMUM (Herbst). Cancer planissimus HERBST, Natur. Krabben u. Krebse, III, 1804, Pt. 4, p.3, pl. LIX, fig. 3. Leiolophus planissimus M1ERS, Cat. Crust. New Zealand, 1876, p. 46. Range.—West Indian region; Oriental region to Japan and Sand- wich Islands; Clarion Island; Cape St. Lucas; Chile; Azores; West coast of Spain and Portugal; West and South Africa. African localities.—Madeira (Brullé, Dana, Miers); Canaries (Brulleé) ; Praia das Conchas, St. Thomas Island (Osorio); Ascension Island (Miers); Cape of Good Hope (Ortmann). ' Percnon Gistel, Naturgeschichte des Thierreichs, Stuttgart, 1848, p. vill, substi- tuted for Acanthopus de Haan, preoccupied. 282 PROCEEDINGS OF THE NATIONAL MUSEUM. Veuineue Family PINNOTHERID4. Genus THAUMASTOPLAX Miers. THAUMASTOPLAX ANOMALIPES Miers. Thaumastoplax anomalipes Miers, Ann. Mag. N. H. (5), VIII, 1881, p. 261, pl. xiv. fig. 2 West African locality.—Goree Bay, Soneeumnbie! 9 to 15 fathoms (Miers). Tribe CYCLOMETOPA. Family POTAMONID&. KEY TO THE WEST AFRICAN GENERA AND SUBGENERA OF THE FAMILY POTAMONIDA. A. Ambulatory legs with anterior margin of carpal and propodal joints unarmed. B. Lateral margin of carapace armed with large and sharp teeth or spines. os Genus Parathelphusa. B’. Lateral margin of carapace entire, toothed or granulate... -.-.. Genus Potamon. C. Postfrontal crest present and uninterrupted ----.- Subgenus Potamonautes. C2) Rostirontalcrestiabsentisese sere ree ee ee eee eee eee Subgenus Cale pnsa A’. Ambulatory legs armed with numerous spines on the anterior margin. Genus Hrimetopus. Genus POTAMON Savigny. | Subgenus POTAMONAUTES MacLeay. KEY TO THE WEST AFRICAN SPECIES OF THE SUBGENUS POTAMONAUTES. A. Lateral margin of carapace with a tooth between the outer orbital tooth and the postfrontal crest. B. Postfrontal crest terminating in a well-marked tooth ......-..-----. africanus. B’. Tooth rudimentary or wanting. C. A groove separates the postfrontal crest from the lateral margin of the cara- EI eee Aaa EON Se Me Kee an Ao HAM Sar MEMES cahotS 6 Se 3 aubrut. C’. Postfrontal crest and lateral margin continuous. .-.....--.-----.---- decazet. A’. Lateral margin of carapace without a tooth between the outer orbital tooth and the postfrontal crest. B. Epibranchial tooth strong, produced. C. Postfrontal crest arcuate, more advanced at its middle than the epibranchial tooth. DE Carapace) very thick: asiwolllemma: = soe) ne aren terete eae bayonianus D’. Carapace less thick, swollen; front narrower: a deeper sinus between the postfrontal crest and the epibranchial tooth ...-..-...--...----- dubius. C’. Postfrontal crest sinuous, its middle portion about equally advanced with thejepibramch valet ooh sys Sp ea ee eee ae se eee ballayi.! B’. Epibranchial tooth nearly obsolete, not produced. C. Carapace flattened; postfrontal crest not prominent.-----.--- margaritarius. C’. Carapace very convex. D. Postfrontal crest sloping backward from the middle to the lateral mar- fn) ONS eee eee ee SS) eeu ey epee ON Ree A ecm ea SEIS aiuto pS eens perlatus. IDS IROsnaronaUrAl CMTE OMMOUI ss 34 2 ee Seb b6 Sos5 Ssedco cStocs scecee anchiete. Oro aine 2p le ere of this species, the postfrontal crest is SraAinemaoredl. No. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. 283 POTAMON (POTAMONAUTES) AFRICANUS (A. Milne-Edwards) Thelphusa africana A. MILNE- EDWARDS, Nouv. Arch. Mus. Hist. Nat., V, 1869, p. 186, pl. x1, figs. 2, 2a; Ann. Sci. Nat., Zool. (7), IV, 1887, p. 124, fig. 8. Potamon (Potamonautes) aubryi ORTMANN (part), Zool. Jahrb., Syst., X, 1897, p. 309. West African localities.—Rivers of Liberia (de Man); Mount Coffee, Liberia (O. F. Cook; U.S.N.M.); Kamerun (Aurivillius); Gabun (A. Milne-Edwards); the San Benito, the Ogove, the Alima, the Kongo (A. Milne-Edwards). POTAMON (POTAMONAUTES) DECAZEI (A. Milne-Edwards) . Thelphusa decazei A. MILNE-EDWARDS, Bull. Soc. Philom. (7), X, 1886, p. 150; Ann. Sci. Nat., Zool., (7), IV, 1887, p. 127, fig. 7. Potamon (Potamonautes) decazei ORTMANN, Zool. Jahrb., Syst., X, 1897, p. 309. West African localities—The San Benito, Franceville on the Alima (A. Milne- Edwards). POTAMON (POTAMONAUTES) AUBRYI (Milne-Edwards). Thelphusa aubryi MILNE-EDWARDS, Ann. Sci. Nat. (3), XX, 1853, p. 210.—A. MILNE- EDWARDS (part), Ann. Sci. Nat., Zool. (7), IV, 1887, p. 122. Thelphusa aurantia HERKLOTS, Addit. Faun. Afr. Occ., 1851, p. 5, pl. 1, fig. 2. (Not Cancer aurantius Herbst. ) Thelphusa peliti HERKLOTS, Symb. Carc., Leyden, 1861, p. 13. Thelphusa emarginata KINGSLEY, Proc. Acad. Nat. Sci. Phila., 1880, p. 36. Potamon (Potamonautes) aubryi ORTMANN (part), Zool. Jahrb., Syst., X, 1897, p. 309. ‘ Potamon (Potamonautes) emarginatum ORTMANN, Zool. Jahrb., Syst., X, 1897, p. 309. African localities—St. George-del-Mina, Guinea (Herklots); Kam- erun (Aurivillius); Gabun (Milne-Edwards); West Africa (Kingsley) ; Port Natal (Kingsley). POTAMON (POTAMONAUTES) MARGARITARIUS (A. Milne-Edwards). Thelphusa margaritaria A. MILNE-EDWaARDs, Nouv. Arch. Mus. Hist. Nat., V, 1869, p. 185, pl. 1x, figs. 4, 4a, 40; Ann. Sci. Nat., Zool. (7), IV, 1887, p. 130. Potamon (Potamonautes) margaritarium ORTMANN, Zool. Jahrb., Syst., X, 1897, p. 308. Habitat.—St. Thomas, off west coast of Africa (A. Milne-Edwards). The following localities on the island have been noted: Ribeira Peixe; Portinho, 400 meters altitude; Binda; Batepa; Saudade, 750 meters altitude; River Agua Grande (Osorio); Rio de Mello, 300 meters (Greeff). POTAMON (POTAMONAUTES) ANCHIET 4 (Capello). Thelphusa anchietw CAPELLO, Jor. Sci. Lisboa, III, 1870, p. 132, pl. ta, fig. 11.—A. MILNE-EDWARDS, Ann. Sci. Nat., Zool. (7), IV, 1887, p. 128. Potamon (Potamonautes) perlatum ORTMANN (part), Zool. Jahrb., Syst., X, 1897, p. 307. West African localities.—Braganeca; Ambaka; Pungo-Ndongo; Dondo (allin Angola). Luebo, Kongo; D. W. Snyder (U.S.N.M.). Quilengues and Quando (Osorio). 284 ' PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII, POTAMON (POTAMONAUTES) DUBIUS (Capello). Thelphusa dubia CAPELLO, Jor. Sci. Lisboa, IV, 1873, p. 254, pl. 1, figs. la, 2a.—A. MILNE-EDwarps, Ann. Sci. Nat., Zool. (7), IV, 1887, p. 129. Potamon (Potamonautes) dubium ORTMANN, Zool. Jahrb., Syst., X, 1897, p. 307. African localities.—St. Thomas (Osorio); Kunene River, Mossamedes (Capello); Angola, Humbe, and Kunene River (Osorio); Kazungula, Zambesi (U.S.N.M.). POTAMON (POTAMONAUTES) BAYONIANUS (Capello). Thelphusa bayoniana CAPELLO, Desc. tres esp. nov. Crust. Afr. occ., Lisboa, 1864, p. 2, pl. 1, fig.3; Mem. Acad. R. Sci. Lisboa, Cl. Sci., Nova Ser., Il, 1865, Pt. 2; Jor. Sci. Lisboa, III, 1870, p. 131, pl. 2a, fig. 10.—A. MILNE-EDWARDS, Ann. Sci. Nat., Zool. (7), IV, 1887, p. 128. Potamon (Potamonautes) bayonianum ORTMANN, Zool. Jabhrb., Syst., X, 1897, p. 306. African localities—Angola: To the north of Quibula; Duque de Braganea; Kakonda; Huilla; Kunene River (Osorio). POTAMON (POTAMONAUTES) BALLAYI (A. Milne-Edwards) . Thelphusa ballayt A. MILNE-EDwarps, Bull. Soc. Philom. (7), X, 1886, p. 149; Ann. Sci. Nat., Zool. (7), IV, 1887, p. 182, figs. 2, 2a, 20. African locality.x—N gancin on the Kongo (A. Milne-Edwards). POTAMON (POTAMONAUTES) PERLATUS (Milne-Edwards). Thelphusa perlata MILNE-EDWARDS, Hist. Nat. Crust., II, 1837, p. 13. Potamon (Potamonautes) perlatum ORTMANN (part), Zool. Jahrb., Syst., X, 1897, p. 307. African localities—Zanzibar and Zanzibar coast (Pfeffer); Natal (Krauss, Ortmann); Cape Colony (Milne-Edwards, Krauss, Heller); Constantia (Stimpson); Cape Town (Miers); Wellington (Miers); Chalk Bay (Studer); Biballa and Caconda (Osorio); 400 miles inland from Loanda in River Cuiji—H. Chatelain, collector (U.S.N.M.). ‘Found in ponds and swamps; eaten by the natives; called ‘ Hala.’” Subgenus GEOTHELPHUSA Stimpson. POTAMON (GEOTHELPHUSA) MACROPUS Rathbun. Potamon (Geothelphusa) macropus RATHBUN, Proc. Biol. Soc. Washington, XII, 1898, p. 29, pl. u, figs. 1-4. African locality—Mouth of Mesurado River, Monrovia; O. F. Cook, collector. ; Genus PARATHELPHUSA Milne-Edwards. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS PARATHELPHUSA. A. Lateral margin with only one tooth behind the post-frontal crest... --- chavanesi. A’. Lateral margin with more than one tooth behind the post-frontal crest. B. Lateral margin with more than three teeth behind the post-frontal crest. C. Carapace narrow; post-frontal crest feeble..-.....-..-..---..--.---. brazze. C’. Carapace broad; post-frontal crest distinct. -.........-..--..-.-.----chaperi. B’. Lateral margin with only three teeth behind the post-frontal crest. C. Post-frontal crest uninterrupted, nearly straight. ....-.....-.-.-.---- pecilei. C’. Post-frontal crest arcuate, uneven, interrupted -...-..-..-.-.--.-.---- campi. wo. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. 285 PARATHELPHUSA BRAZZ£ A. Milne-Edwards. Parathelphusa brazz@ A. MILNE-EDWARDS, Bull. Soc. Philom. (7), X, 1886, p. 148; Ann. Sci. Nat., Zool. (7), IV, 1887, p. 142, fig. 6. Potamon (Acanthothelphusa) brazzw@ ORTMANN, Zool. Jahrb., Syst., X, 1897, p. 300. West African locality.—N gancin, Kongo (A. Milne-Edwards). PARATHELPHUSA CHAPERI A. Milne-Edwards. Parathelphusa chaperi A. MILNE-EDwarpbs, Ann. Sci. Nat., Zool. (7), IV, 1887, p. 144, fig. 4. West African locality.—Assini (A. Milne-Edwards). PARATHELPHUSA PAECILEI A. Milne-Edwards. Thelphusa pecilei A. MILNE-EDWARDS, Bull. Soc. Philom. (7), X, 1886, p. 149. Parathelphusa pecilei A. MILNE-Epwarps, Ann. Sci. Nat., Zool. (7), IV, 1887, p. 148, fig. 1. Potamon (Acanthothelphusa) pecilei ORTMANN, Zool. Jahrb., Syst., X, 1897, p. 300. West African locality—Alima River, Bateke, French Kongo (A. Milne-Edwards). PARATHELPHUSA CAMPI Rathbun. Parathelphusa campi RATHBUN, Proc. U. 8. Nat. Mus., XVII, 1894, p. 25. Potamon (Acanthothelphusa) campi ORTMANN, Zool. Jahrb., Syst., X, 1897, p. 300. West African locality.a—Stanley Pool, Kongo. ~PARATHELPHUSA CHAVANESI A. Milne-Edwards. Thelphusa chavanesi A. MILNE-EDWARDS, Bull. Soc. Philom. (7), X, 1886, p. 150. Parathelphusa chavanesi A. MILNE-EDWARDS, Ann. Sci. Nat., Zool. (7), IV, 1887, p. 145, fig. 3. Potamon (Potamonautes) chavanesi ORTMANN, Zool. Jahrb., Syst., X, 1897, p. 309. West African locality.—Environs of Franceville on the Alima, French Kongo (A. Milne-Edwards). Genus ERIMETOPUS Rathbun. = ERIMETOPUS SPINOSUS Rathbun. Erimetopus spinosus RATHBUN, Proc. U.S. Nat. Mus., XVII, 1894, p. 26. West African locality —Stanley Pool, Kongo; under boards and tim- bers, in mud. Family PILUMNIDA. KEY TO THE WEST AFRICAN GENERA OF THE FAMILY PILUMNIDZA. A. The ridges that define the efferent branchial channels, if present, are low and are confined to the posterior part of the endostome, never reach- ing to the anterior boundary of the buccal cavern. B. Fronto-orbital border hardly ever (in adults) more than half, most usually much less than half, the greatest width of the carapace. C. Antero-lateral margin continued to the angle of the buccal cavity; carapace CLOG COR ae a eA A acct aii Slava) aieies Sis Glyptoxanthus 286 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII C’. Antero-lateral margin ending at the orbit. De Amibullatonyelersicristateseees sees eerie eee eee Lophopanopeus. D’. Ambulatory legs not cristate. HeiCarapacerdeeplyslobuilate mess eae sean mee eee ae ees eee Actea. E’. Carapace not deeply lobulate. F. Fingers sharp-pointed; carapace subhexagonal --..----..----- Xantho. F’. Fingers blunt-pointed, hollowed at the tip. G. Carapace very broad, oval; antero-lateral margin thickened. Xanthodius. G’. Carapace of moderate width, suboval; front and antero-lateral mar- gins not thickened sjem eo. ee sere eee eee eee Leptodius. B’. Fronto-orbital border much more than half the greatest width of the carapace. C. Fingers pointed at tips. Q D. Carapace and legs granulate or tuberculate ........---..-.------ Xanthias. D’. Carapace almost smooth, except for short transverse lines. Legs smooth. EKupanopeus. C/Hingersvhollowedtatitipy S255 4440 ee eee eee e eee ee aeeeeeee Chlorodiella. A’. The ridges that define the efferent branchial channels extend to the anterior boundary of the buccal cavern, and are often very strong. B. Fronto-orbital borders half or less than half the greatest breadth of the cara- pace, which is broad and transversely oval....--..- Epixanthus. B’. Fronto-orbital border just about two-thirds the greatest breadth of the cara- pace. Antero-lateral borders almost always shorter than the posterolateral pes eas. cee ee tee croc erceeeer Pilumnus. Genus ACT A“A de Haan. ACTZAZA MARGARITARIA A. Milne-Edwards. Actewa margaritaria A. MILNE-EDWARDS, Nouv. Arch. Mus. Hist. Nat. Paris, IV, 1868, p. 62, pl. xvH, figs. 9-12. West African localities.—Cape Verde Islands (A. Milne-Edwards); Iogo-logo, St. Thomas (Osorio). Genus XANTHO Leach. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS XANTHO. A. Carapace wide; width more than 14 its length...--..........---..----- rivulosus. A’. Carapace narrow; width less than 1} its length ........-.. Sout cue See eee pilipes. XANTHO RIVULOSUS (Risso). Cancer rivulosus Risso, Crust. Nice, 1816, p. 14. Xantho rivulosus MILNE-EDwarps, Hist. Nat. Crust., I, 1834, p. 394. Range.—Great Britain; Atlantic coast of Europe; Black Sea; Medi- terranean Sea; West coast of Africa. West African locality.—Angeola (Osorio). XANTHO PILIPES A. Milne-Edwards. Xantho pilipes A. MILNE-EDwarps, Ann. Soc. Entom. France, VII, 1867, p. 268. Xartho pilipes? Miers, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 213. West African localities.—Senegal (A. Milne-Edwards); Goree Bay, Senegambia, 9 to 15 fathoms (Miers); Senegambia (Ortmann). No, 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. 287 Genus XANTHODIUS Stimpson. XANTHODIUS PUNCTATUS (Miers). Leptodius punctatus Miers, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 214, pl. x1, fig. 3. West African locality—Goree Bay, Senegambia, 9 to 15 fathoms (Miers). : Genus LEPTODIUS A. Milne-Edwards. LEPTODIUS CONVEXUS (A. Milne-Edwards). Chlorodius (Leptodius) converus A. MILNE-EDWARDS, Rev. Mag. Zool. (2), XXI, 1869, p. 410. West African locaiities—Cape Verde Islands, at St. Vincent, St. Lucia, Mayo, and Santiago (A. Milne-Edwards); logo-logo, St. Thomas Island (Osorio); Isla das Rolas (Osorio). Genus XANTHIAS Rathbun. XANTHIAS MELANODACTYLUS (A. Milne-Edwards). Xanthodes melanodactylus A. MILNE-EDWARDS, Nouv. Arch. Mus. Hist. Nat. Paris, IV, 1868, p. 60, pl. x vil, figs. 1-3.—M1kErs, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 212. Range.—Fayal, Azores, 50 to 90 fathoms (Miers); West Africa. West African localities.—Madeira islands (Miers); off Gomera, Canary Islands, 75 fathoms (Miers); Cape St. Vincent, Cape Verde Islands (A. Milne-Edwards, Miers); Harbor of Porto Praya, Cape Verde Islands, 10 fathoms (Studer); Goree Bay, Senegambia, 9 to 15 fathoms (Miers); Senegambia (Ortmann); St. Thomas Island, at Praia Almoxarife and Praia des Conchas (Osorio); Ascension Island (Miers); Ascension Island, 20 to 30 fathoms, March 25, 1890, U.S. Eclipse Expedition to West Africa, William Harvey Brown, Naturalist (U.S.N.M.). Genus LOPHOPANOPEUS Rathbun. LOPHOPANOPEUS SEXDENTATUS (Miers). Lophozozymus (Lophoxanthus) secdentatus Miers, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 211, pl. x11, fig. 2. West African locality—Goree Bay, Senegambia, 9 to 15 fathoms (Miers). Genus EUPANOPEUS Rathbun. EUPANOPEUS AFRICANUS (A. Milne-Edwards). Panopeus africanus A. MILNE-EDWaRDs, Ann. Soc. Entom. France (4), VII, 1867, . 276. ee africanus RATHBUN, Bull. Lab. Nat. Hist. State Univ. Iowa, IV, 1898, p. 273. West African localities—Rock Spring, Monrovia (O. F. Cook; U.S.N.M.); Gabun and Angola (A. Milne-Edwards). This may be the “ Panopeus herbstii” recorded from Angola and Loanda,' and from logo-Iogo, St. Thomas Island, by Osorio.’ 1 Jor. Sci. Lisboa, XI, 1887, p. 224. 2Tdem. (2), II, 1890, p. 45. 288 PROCEEDINGS OF THE NATIONAL MUSEUM. vou. xxu. Genus CHLORODIELLA Rathbun. CHLORODIELLA LONGIMANA (Milne-Edwards). Chlorodius longimanus MILNE-EDWARDs, Hist. Nat. Crust., I, 1834, p. 401. Chlorodiella longimanus RATHBUN, Ann. Inst. Jamaica, I, 1897, p. 14. Range.—F lorida Reefs; West Indies; Curacao; West Africa. West African locality.—St. Thomas Island (Osorio). Genus GLYPTOXANTHUS A. Milne-Edwards. GLYPTOXANTHUS VERMICULATUS (Lamarck). Cancer vermiculatus LAMARCK, Hist. Nat. Anim. sans Vert., V, 1818, p. 271. Xantho vermiculatus MILNE- EDWARDS, Hist. Nat. Crust., I, 1834, p. 391. Actewa angolensis CAPELLO, Desc. aly. esp. nov. Crust. e Arach. Portugal e poss. Port. do ultramar, 1866, p. 4, pl I, fig. 3; Mem. Acad. R. Sci. Lisboa, Cl. de Sci. Nat., Nova Ser., IV, 1867, Pt. 1. Glyptoxanthus vermiculatus A. MILNE-EDWARDS, Crust. Rég. Mex., 1879, p. 255, pl. xin, fig. 2. West African locality. Angola (Capello, Osorio). In 1868,1 A. Milne-Edwards said “Le Xantho vermiculatus des Antilles a été signalé 4 Angola par M. Capello.” Later, in 1879,? he said “La patrie des deux exemplaires qui ont servi aux descriptions de Lamarck et de M. Milne-Edwards, et qui appartiennent aux collec- tions du Muséum, est inconnue; mais il est tres probable que c’est VPAmérique.” Genus PILUMNUS Leach. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS PILUMNUS. A. Outer surface of the larger hand granulate except toward the lower margin. verr ucosipes. A’. Outer surface of larger hand armed with strong spines ...---.....--.. africanus. PILUMNUS VERRUCOSIPES Stimpson. Pilumnus verrucosipes SvIMPSON, Proc. Acad. Nat. Sci. Phila., X, 1858, p. 36.— Miers, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 216, pl. x11, fig. 5. African localities: —Goree Bay, Senegambia, 9 to 15 fathoms (Miers) ; Simons Bay, Cape of Good Hope, 11 fathoms (Stimpson). PILUMNUS AFRICANUS A. Milne-Edwards. Pilumnus africanus A. MILNE-EDWARDS, Ann. Soc. Entom. France (4), VII, 1867, p. 280. West African localities—Goree, Senegambia (A. Milne-Edwards); Angola (A. Milne-Edwards); Loanda (Osorio). Nouv. Arch. Mus. Hist. Nat. Paris, IV, p. 149. 2Crust. Rég. Mex., p. 255. No. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. 289 Genus EPIXANTHUS Heller. EPIXANTHUS HELLERII A. Milne-Edwards. Epixanthus hellerit A. MILNE-EDWarpDs, Ann. Soc. Entom. France (4), VII, 1867, p. 278. Ozius corrugatus OSORIO, Jor. Sci. Lisboa, XI, 1887, p. 224; (2). I, 1889, p. 131. West African localities—Senegal (A. Milne-Edwards); Gabun (A. Milne-Edwards); St. Thomas Island, at logo-logo, S. Joao dos Angu- lares and Praia das Conchas (Osorio); Angola (Osorio). Family PORTUNID. KEY TO THE WEST AFRICAN GENERA OF THE FAMILY PORTUNIDA. A. Antero-lateral teeth nine. B. Flagellum of antenna entering orbit. CaeAbdomentofemalestrian og ular sem sects eee ease eens oes Portunus. Cr 7Abdomensofomalejan inverted Wisse. .2esctssss2 5222 eee eee oe Callinectes. B’. Basal joint of antenna enlarged and almost excluding the antenna from the OUD fay se satey ayes ein nina tee oleyeiapere te selaxetayerecleiereeialeveyaiara tate Charybdella. A’. Antero-lateral teeth less than nine. B. Carapace wide, subquadrilateral. Front and orbits occupying almost entire ai UbhvOt CarapaCe) acess coo ctcle elses seco ci eienie See omiaine siaeiae Thalamita. B’. Carapace narrow; frontal and antero-lateral borders forming a regular curve. WMeateralsteethyiivest a. asec aistesis eee SOE SHA Oo Ree HE Sera Liocarcinus. Genus PORDUNUS Fabricius: = Neptunus De Haan. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS PORTUNUS. A. Posterior border of the arm with two spines near the wrist..-.-....---- validus. A’. Posterior border of the arm with one spine at the wrist. B. Carapace rough with series of granulations. Hand with three spines--hastatus. B’. Carapace almost smooth. Cretan dewithet wos pines... eas tee ee ee eee mle yars mene sicele wed edwardsi. CeeiHandswithionelspineses <2 soso so oe oe mo enee osc eeisee ee seee pallidus. PORTUNUS VALIDUS Herklots. Portunus (Posidon) validus HERKLOTS, Addit. Faun. Africe Occ., 1851, p. 4, pl. 1, fig. 1. Neptunus validus A. MILNE-EDWaARDs, Arch. Mus. Hist. Nat., X, 1861, p. 321, pl. XXIX, fig. 1. West African localities—St. George del Mina, Guinea (Herklots); Benguela (Osorio). 1“Tupa spinimosa Learn.” is known to me only by the entry of Osorio in Jor. Sci. Lisboa (2), I, 1890, p. 129. Proc. N. M. vol. xxii——19 290 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL PORTUNUS HASTATUS (Linnzus). Cancer hastatus LINNZUS, Sys. Nat., 12th ed., I, 1767, Pt. 2, p. 1046. Lupa hastata MILNE-EDWARDS, Hist. Nat. Crist., I, 1834, p. 455. Neptunus (Amphitrite) inequalis M1ERS, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 217, pl. x11, fig 6. Range.—West coast of Spain and Portugal; Azores; Mediterranean Sea; West Africa. West African localities.—Canaries; Goree Bay, Senegambia, 9 to 15 fathoms (Miers); St. Thomas Island, at Praia das Conchas and Baie d’Anna Chaves (Osorio). PORTUNUS EDWARDSI (Rochebrune). Neptunus edwardsi ROCHEBRUNE, Bull. Soc. Philom. Paris (7), VII, 1883, p. 169. West African localities—Gambia and Casamance Rivers (Roche- brune). PORTUNUS PALLIDUS Rochebrune. Neptunus pallidus ROCHEBRUNE, Bull. Soc. Philom. Paris (7), VII, 1883, P- 170. West African locality. —Lac de N’Guer, Marigots de M’Bao, Thionk, Leybar (Rochebrune). Genus CALLINECTES Stimpson. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS CALLINECTES. A. Length of lateral spine less than twice that of preceding tooth .....--. bocourti. ‘A’. Length of lateral spine more than twice that of preceding tooth. B. Appendages of first abdominal segment of male mucb shorter than the abdomen. C. Lateral spine long and slender, about three times length of preceding tooth. gladiator. C’. Lateral spine shorter and stout, Betneon two. and two and a half times length of preceding tooth eae eae sors eersciee Celene ormeanes ..-.marginatus. B’. Appendages as long as the abdomen.....-....---.--------0see cceees latimanus. CALLINECTES BOCOURTI A. Milne-Edwards. Callinectes bocourti A. MILNE-EDWARDS, Crust. Rég. Mex., 1879, p. 226 (variety of _C. diacanthus).—RATHBUN, Proc. Biol. Soc. Wash., XI, 1897, p.151, and synonymy. ? Neptunus amnicola ROCHEBRUNE, Bull. Soc. Philom. Paris (7), VII, 1883, p. 168. Range.—Honduras to Rio de Janeiro, Brazil; West Africa. West African localities—Senegal; Liberia; Chinchoxo. Neptunus — amnicola Rochebrune 1s described from Sénégal, Falémé, Bakoy, Bafing, ‘‘et tous les Marigots tributaires,” Osorio records “ Neptunus diacanthus” from Angola, Benguella, Loanda, Lobito,' from Praia das Conchas, St. Thomas,’ and from Logo- logo, St. Thomas.? De Man reports N. diacanthus from Liberia, St. George del Mina, and one. Thallwitz also records a Callinectes io Sei. eben ‘XI, 13887, p. 295, Biden (2), II, 1890, Dp. 199. 2Tdem. (2), I, 1889, p. 131. 4 Notes Leyden Mus., V, 1883, p. 150. No. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. 291 (* Neptunus diacanthus”) from Ogowé, West Africa, and Bahia, Brazil. It is impossible to tell without examination of specimens whether these so-called “ N. diacanthus” are synonymous with C. bocourti or with other species of Callinectes. Rochebrune says of Neptunus amnicola, which I think may be identi- eal with Callinectes bocourti, that it is found only in the fresh waters of rivers and is much sought after for food, the meat being exceptionally good. The negroes fish for them to eat and to sell to the Europeans. The Ouolofs eall it ‘‘koti.” , CALLINECTES MARGINATUS (A. Milne-Edwards). Neptunus marginatus A. MILNE-EDwarpbs, Arch. Mus. Hist. Nat. Paris, X, 1861, p. 318, pl. xxx, fig. 2. Callinectes marginatus RATHBUN, Proc. Biol. Soc. Washington, XI, 1897, p. 149, and synonymy. Range.—Bahamas and Florida Keys to Bahia, Brazil; West Africa. West African localities—Cape Verde Islands; Bissau (Osorio); Liberia; Beyah River, Elmina, Ashantee; Gabun; St. Paul de Loanda. CALLINECTES GLADIATOR (Benedict). Callinectes tumidus var. gladiator BENEDICT, Proc. U.S. Nat. Mus., XVI, 1893, p. 537. Callinectes tumidus gladiator RATHBUN, Proc. U.S. Nat. Mus., XVIII, 1896, p. 360. Callinectes gladiator RATHBUN, Proc. Biol. Soc. Washington, XI, 1897, p. 150. West African localities.—Liberia; mouth of Mesurado River, Mon- rovia (O. F. Cook); Dakar (O. F. Cook); Beyah River, Elmina, Ash- antee; Chinchoxo; Kongo Expedition (Brit. Mus.). CALLINECTES LATIMANUS (Rathbun). Callinectes latimanus RATHBUN, Proc. Biol. Soc. Washington, XI, 1897, p. 151, text figs. 6-8. ? Neptunus marginatus var. truncata AURIVILLIUS, K. Sv. Vet.-Akad. Handl., XXIV, 1898, Pt. 4, No.1, p. [5], pl. 1, figs. 1-4. West African localities.—Lagos, Bight of Benin, Guinea; Kamerun (Aurivillius). Genus CHARYBDELLA Rathbun. CHARYBDELLA RUBRA (Lamarck). Portunus ruber LAMARCK, Hist. Anim. sans Vert., V, 1818, p. 260. Cronius ruber Stimpson, Ann. Lye. Nat. Hi&t. N. Y., VII, 1860, p. 225. Goniosoma millerti A. MILNE-EDWARDS, Nouv. Arch. Mus. Hist. Nat., IV, 1869, p. 54, pl. xvui, figs. 1-3.—Miers, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 218. Cronius millertti A. MILNE-EDWARDS, Crust. Rég. Mex., 1879, p. 232. Range.—Charleston Harbor, South Carolina, to Brazil; Panama; Acapulco (Faxon in litt.); West Africa. 1 Abh. Ber. K. Zool. Mus. Dresden, No. 3, 1891, p. 53. 202 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. West African localities—Cape St. Vincent, Cape Verde Islands (A. Milne-Edwards); Goree Bay, Senegambia, 9 to 15 fathoms (Miers); St. Thomas (Osorio); Loanda (Osorio). Genus LIOCARCINUS Stimpson. = Portunus Leach. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS LIOCARCINUS. A. Carapace and chelipeds covered with numerous transverse lines of granules bordered swith hair’ 533. Se5s ess ace eee eee eee corrugatus A’. Carapace and chelipeds not covered with numerous transverse lines of granules bordéred with hainifcee a So Ree See ey ee nee si eteneose eee eeecr pusillus LIOCARCINUS CORRUGATUS (Pennant). Cancer corrugatus PENNANT, Brit. Zool., IV, 1777, p.5. Portunus corrugatus Bosc, Hist. Nat. Crust., I, 1802, p. 217.—Mixrs, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 219. Portunus strigilis Stimpson, Proc. Acad. Nat. Sci. Phila., X, 1858, p. 38. Range.—Europe; West Africa; Japan (Stimpson, Miers); Australia (Miers). West African localities—Oft Fayal, Azores, 50 to 90 fathoms (Miers) ; Canaries (Brullé); St. Vincent, Cape Verde Islands (Miers); Goree Bay, Senegambia, 9 to 15 fathoms (Miers). LIOCARCINUS PUSILLUS (Leach). Portunus pusillus LEAcH, Trans. Linn. Soc. London, XI, 1815, p. 318. Range.—EKurope (in the Mediterranean to 450 meters); Azores (Bar- rois); West Africa, including islands. West African localities.—Canaries (Miers); Goree Bay, Senegambia, 9 to 15 fathoms (Miers). Genus THALAMITA Latreille. THALAMITA INTEGRA AFRICANA Miers. Thalamita integra var. africana Miers, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 218. West African localities—Canary Islands; Goree Bay, Senegambia, 9 to 15 fathoms (Miers); Saudade, St. Thomas, 750 meters altitude (Osorio). Family CANCRID. Genus ATELECYCLUS Leach. ATELECYCLUS ROTUNDATUS (Olivi). Cancer rotundatus OLIVI, Zool. Adriat., 1792, p. 47, pl. u, fig. 2. Atelecyclus rotundatus Mirrs, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 220. Range.—Mediterranean; West coast of France; West Africa. West African locality.—Goree Bay, Senegambia, 9 to 15 fathoms (Miers). NO. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. 293 Tribe OX YRHYNCHA. Family MAIID 4. KEY TO THE WEST AFRICAN GENERA OF THE FAMILY MATID#, A. Eyes without defined orbits. 1B, ROSEN) Sibi NIG) Sen een oea case Bees Saec coo mess Bese aes > Beene eee Stenorynchus. 1B, IR@SHRILN WyyO= DUNO Sb ce5 5 Sao6 code oobosd.csaSo5 boa coe ee eueed ~sae! Macropodia. A’. Eyes with defined orbits. B. Orbits incomplete, with open fissures. C. Carapace triangulate; preorbital spines acute, well developed, directed CRUEL CHEE br SS oy eee es OTe Gd Sue ea ee ea eR ac Pisa. C’. Carapace suboval; branchial regions swollen; preorbital teeth short, Wit RS Saad sass Coad Ceo Se Rama O anor Seer Seas Comoe See aes ies Micropisa. 13’, Oman: Gomnjolloue 235 ssssde6 5 SSccsuds bobs sos sues cobadéas saco5e onde cooU! LOUK NICIs Genus STEHENORYNCHUS Lamarck. STENORYNCHUS SAGITTARIUS (Fabricius). Cancer sagittarius FABRICIUS (part), Ent. Sys. emend. et aucta, II, 1793, p. 442. Leptopodia sagittaria LEACH, Zool. Misc., II, 1815, p. 16, pl. 67. Stenorynchus sagittarius RATHBUN, Ann. Inst. Jamaica, I, 1897, p. 4. Range.—Cape Hatteras, North Carolina, to Rio de Janeiro, Brazil; West Africa. West African localities—Madeira Islands; Canary Islands; Cape Verde Islands; Senegambia (Herklots); St. Thomas (Osorio). Genus MACROPODIA Leach. MACROPODIA ROSTRATA (Linnzus). Cancer rostratus LINN&ZUS, Fauna Suecica, 1761, p. 492. Cancer phalangium PENNANT, Brit. Zool., IV, 1777, p. 8, pl. 1x, fig. 17. Stenorynchus phalangium MILNE-EDWaARDS, Hist. Nat. Crust., I, 1834, p. 279.— BELL, Brit. Stalk-eyed Crust., 1853, p. 2, figures. Macropodia rostratus STEBBING, Hist. Recent Crust., 1893, p. 105. Range.—Kurope; West Africa. West African localities—Azores Islands; Madeira Islands; Cape Verde Islands; Goree Bay, Senegambia, 9 to 15 fathoms (Miers). MACROPODIA ROSTRATA SPINULOSA (Miers). Stenorhynchus rostratus var. spinulosus Miers, Ann. Mag. N. H. (5), VIII, 1881, p. 206. Range.—Belfast Bay, Ireland (Miers); Vigo Bay, Spain (Miers); West Africa. West African locality—Goree Bay, Senegambia, 9 to 15 fathoms (Miers). Anterior legs armed with numerous spinules on the upper and lower edges of the arms, wrists, and hands; the fingers, which are dilated and laterally compressed, are smooth, and when closed have between them, near the base, a wide hiatus. 294 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Genus PISA Leaeh. PISA CARINIMANA Miers. Pisa carinimana Miers, Ann. Mag. Nat. Hist. (5), [V, 1879, p. 11, pl. 1v, fig.6; Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 207. West African localities.—Canary Islands (type locality); Goree Bay, Senegambia, 9 to 15 fathoms (Miers). Genus MICROPISA Stimpson. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS MICROPISA. A. Four tubercles in a transverse line on the gastric region. Branchial spines pointed. B. Carapace considerably longer than wide..........-....---.-----.---- violacea. Be Carapace about as; lone ashwide ee y=) seen e eee ee eee eeeee bocagei. A’. Three tubercles in a transverse line on the gastric region. Branchial spines terminatine inlay butlOness sss see eee aCe Sets eer Eee eee eryophora. MICROPISA VIOLACEA A. Milne-Edwards. Micropisa violacea A. MILNE-EDWARDsS, Nouv. Arch. Mus. Hist. Nat., IV, 1868, p. 50, pl. xvi, figs. 3-6. Herbstia violacea Miers, Ann. Mag. N. H. (5), VIII, 1881, p. 206. West African localities.—Cape St. Vincent, Cape Verde Islands (A. Milne-Edwards); Goree Bay, Senegambia, 9 to 15 fathoms (Miers); St. Thomas (Osorio); Loanda (Osorio); Angola (A. Milne-EKdwards). MICROPISA BOCAGEI Osorio. Micropisa bocagei OSORIO, Jor. Sci. Lisboa, XI, 1887, p. 223. West African locality.—Benguela, Angola (Osorio). MICROPISA ERYOPHORA Rochebrune. Micropisa eryophora ROCHEBRUNE, Bull. Soc. Philom. Paris (7), VII, 1883, p. 167. Herbstia eryophora RATHBUN, Proc. U.S. Nat. Mus., XVI, 1893, p. 93. West African localities—Mouth of the Gambia and of the Casa- mance (Rochebrune). Genus LIBINIA Leach. LIBINIA DUBIA Milne-Edwards. Libinia dubia MILNE-EDWARDS, Hist. Nat. Crust., I, 1834, p. 300, pl. x1v bis, fig. 2.—STREETS, Proc. Acad. Nat. Sci. Phila., 1870, p. 104. ~ Range.—Massachusetts to Texas; West Africa (Streets). I have recently come to the conclusion that certain forms usually considered varieties of L. dubia are distinct. These are L. distincta Guérin, Capello (not von Martens) and L. rhomboidea Streets = L. inflata Streets = UL. distincta von Martens (type examined). A specimen of the former is in the United States National Museum from Charlotte Harbor, Florida (Cat. No. 15203, U.S.N.M.), and of the latter from Merida, Yucatan (Cat. No. 2169, U.S.N.M.). No. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. 295 Family PARTHENOPID. KEY TO THE WEST AFRICAN GENERA OF THE FAMILY PARTHENOPIDA., A. Carapace not laterally expanded so as to conceal the ambulatory legs-.Zambrus. A’. Carapace more or less expanded to form a vault in which the ambulatory legs GR COMCECHIC occ tes eodb aa eeusss eoceesdoode oper es Cp acoGsEeces Heterocrypta. * Genus LAMBRUS Leach. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS LAMBRUS. Ae Oarapacemuchy widersbhan Lome sere tssmseiesiaisisis ereisieicies/=\-leis cs e)ei-ie)6 macrochelos. A’. Carapace nearly as long as wide. B. Carapace very convex and tuberculated.......-. Dae pare eee ers Massend. B’. Carapace more depressed and sparingly granulated...--.....-----. bicarinatus. LAMBRUS MACROCHELOS (Herbst). Cancer macrochelos HERBST, Natur. Krabben u. Krebse, {, 1790, p. 254, pl. x1x, fig. 107. Lambrus mediterraneus Roux, Crust. Médit., 1828, p. (20), pl. 1. Lambrus macrocheles ORTMANN, Zool. Jahrb., Syst., VII, 1893, p. 414. Range.—Mediterranean Sea; West Africa. West African locality.—Liberia, 49 fathoms (Studer). LAMBRUS MASSENA Roux. Lambrus massena Roux, Crust. Médit., 1828, p. (25), pl. x x111, figs. 7-12. Lambrus (Parthenopoides) massena Miers, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 207. Lambrus (Parthenolambrus) massena MIERs, Challenger Rept., Zool., XVII, 1886, p- 100. Range.—Mediterranean; West Coast of France; Azores (Barrois); Azores, off Fayal, 50 to 90 fathoms (Miers); West Africa. West African localities.—Canaries; St. Vincent, Cape Verde Islands (Miers); Goree Bay, Senegambia, 9 to 15 fathoms (Miers). Variety GOREENSIS Miers. Lambrus massena var. goreensis MIERS, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 374= Variety Spinifer, idem., p. 208. Differs from typical massena in having the prominent tubercles of the gastric, cardiac, and branchial regions developed into blunt spines. A Similar spine exists near the distal end of the upper surface of the arm, and the upper surface of the palms is strongly granulated and tuber- culated (Miers). West African locality. Goree Island, Senegambia (Miers). Variety ATLANTICA Miers. Lambrus massena var. atlanticus Miers, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 208; Challenger Rept., Zool., XVII, 1886, p. 100. Front much less prominent than in typical forms, more deflexed and rounded at its distal end; the regions of the carapace less convex and 296 PROCEEDINGS OF THE NATIONAL MUSEUM. Vor. XXIL less prominently granulated, with the interspaces and the sides toward the lateral margins also more or less granulated; arm gen- erally shorter (Miers). West African localities.—St. Vincent, Cape Verde Islands (Miers); Goree Island, Senegambia (Miers). LAMBRUS BICARINATUS Miers. Lambrus (Parthenopoides) bicarinatus M1iERs, Ann. Mag. Nat. Hist. (5), VIII, 1881, p- 208. Lambrus (Parthenolambrus) bicarinatus Mirrs, Challenger Rept., Zool., XVII, 1886, p. 99. West African localities.—Canary Islands (Miers); Goree Island, Sene- gambia, 9 to 15 fathoms (Miers). Genus HETEROCRYPTA Stimpson. HETEROCRYPTA MALTZANI Miers. Heterocrypta maltzami M1ERs, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 209, pl. xii, fig. 1. Heterocrypta maltzani MieRS, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 374; Chal- lenger Rept., Zool., XVII, 1886, p. 103. Range.—Bay of Toulon, 455 meters (A. Milne-Edwards); Fayal, Azores, 50 to 90 fathoms; Azores, 450 fathoms; West Africa. West African locality.—Goree Bay, Senegambia, 9 to 15 fathoms (Miers). Tribe OX YSTOMA TA: Family CALAPPID®. Genus CALAPPA Fabricius. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS CALAPPA. A. Carapace with a deep hollow on either side of the gastric region. Posterior teeth of clypeiform expansion broad and shallow ...--..-.----..----- gallus. A’. Carapace without a deep hollow on either side of the gastric region. Posterior teeth of clypeiform expansion elongate, spiniform. B. Lateral teeth of clypeiform expansion three. Carapace marked with patches of blood red. C. Lateral and postero-lateral teeth of clypeiform expansion longer than broad. rubroguttata. C’. Lateral and postero-lateral teeth of clypeiform expansion broader than long. granulata. B’. Lateral teeth of clypeiform expansion four. Carapace narrower than the pre- Ceding a Loci Bee etcetera ce er ote es Dg ee es ares ee pelti. No. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. 297 CALAPPA GALLUS (Herbst). Cancer gallus HERBST, Natur. Krabben u. Krebse, III, 1803, Pt. 3, pp. 18, 46, pl. Lv, fig. 1. Cancer (Calappa) gallus LATREILLE, Regne Anim. Cuvier, III, 1817, p. 24. Calappa galloides Stimpson, Ann. Lyc. Nat. Hist. N. Y., VII, 1859, p. 71. Range.—Islands of the Pacific and Indian oceans; Red Sea; West Africa; Florida Keys; Jamaica; Curacao; Bahia, Brazil. West African localities—Cape Verde Islands (Paris Mus.), Guinea (Copenhagen Museum), St. Thomas (Osorio), Benguela (Osorio). CALAPPA GRANULATA (Linnzus). Cancer granulatus LINN&US, Sys. Nat., 10th ed., I, 1758, p. 627; 12th ed., I, Pt. 2, 1767, p. 1043 (type). Cancer (Calappa) granulatus CUVIER, Hist. Nat. Anim., 1798, p. 459. Calappa granulata CAPELLO, Jor. Sci. Lisboa, III, 1870, p. 130. Range.—Mediterranean; Portugal; Azores; West Africa; Japan, (Barrois). West African localities.—Canaries (Brullé); Angola (Capello); Ben- guela (Osorio). CALAPPA RUBROGUTTATA Herklots. Calappa rubroguttata HERKLOTS, Addit. Fauna Afr. Occ., 1851, p. 11. Calappa bocagei CAPELLO, Jor. Sci. Lisboa, ITI, 1870, p. 130, pl. 11, fig. 3. West African localities.—Near Boutry, Guinea (Herklots); Princes Island (Osorio); St. Thomas Island (Osorio); Gabun (Paris Mus.); Angola (Capello); Benguela and Bay of Mossamedes (Osorio). CALAPPA PELII Herklots. Calappa pelii HERKLOTS, Addit. Fauna Afr. Occ., 1851, p. 12. West African locality—Near Boutry, Guinea (Herklots). Family MA’TUTIDA. Genus HEPATUS Latreille. HEPATUS PRINCEPS (Herbst). Cancer princeps HERBST, Natur. Krabben u. Krebse, II, 1794, p. 154, pl. xxxvIII, fig 2. Calappa angustata FABRICIUS, Entom. Syst., Suppl., 1798, p. 347. Hepatus fasciatus LATREILLE, Hist. Nat. Crust., V, 1803, p. 388. Range.—F rom Georgia to Brazil; West Africa; Cape of Good Hope (Herklots); East Indies (Herbst). West African locality.—Guinea (Copenhagen Museum). 298 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII Family LEUCOSIID2?. KEY TO THE WEST AFRICAN GENERA OF THE FAMILY LEUCOSIID. A. Merus of external maxillipeds more than half the length of the ischium measured along the inner border; fingers stout, gradually narrowing from base to tip. B. Carapace subglobular, convex, the regions usually not distinctly delimited, but merged into the general convexity....-...--.------------------ Philyra. B’. Carapace polygonal; surface broken or nodular; regions delimited by grooves Oe macebRaes Ge ly oo6 so. Ses co soosse coseco ec saos se oees os bodses = Ebalia. A’. Merus of external maxillipeds half or less than half the length of the ischium measured along the inner border; fingers slender, almost of same diameter THeONEN LISS). WO WYO cacGas ecdahe coodoe ba90de b65550 ou So0 douche coueSS So Leucosia. Genus PHILYRA Leaeh. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS PHILYRA. A. Carapace with a lateral dorsal crest .-----.-----.----.---+-. ------------ cristata A’. Carapace without a lateral dorsal crest ...-..-..---.----.---------- levidorsalis. PHILYRA CRISTATA Miers. Philyra cristata Miers, Ann. Mag. N. H. (5), VIII, 1881, p. 263, pl. xv, fig 1. West African locality.—Goree Bay, Senegambia, 9 to 15 fathoms (Miers). PHILYRA LAVIDORSALIS Miers. Philyra levidorsalis Mrmrs, Ann. Mag. N. H. (5), VIII, 1881, p. 264, pl. xv, fig. 2. West African locality.—Goree Bay, Senegambia, 9 to 15 fathoms (Miers). Genus EBALIA Leach. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS EBALIA. A. Exognath of outer maxilliped reaching the distal end of the merus of the endognath .. 0.2 <2 orn oe ie ele arias ie minim wm am am aleinie) aal afinis. A’. Exognath of outer maxilliped not reaching the distal end of the merus of the GiGloyaneily 2h o5 Seo5su 66 Geauesooab descue pagoon cecanocd ceases ocgccuc tuberculata. EBALIA TUBERCULATA Miers. Ebalia tuberculata Miers, Ann. Mag. N. H. (5), VIII, 1881, p. 266, pl. xv, fig. 3. West African locality.—Goree Bay, Senegambia, 9 to 15 fathoms (Miers). EBALIA AFFINIS Miers. Ebalia afinis Mrers, Ann. Mag. N. H. (5), VIII, 1881, p. 268, pl. xtv, fig. 4. West African locality—Goree Bay, Senegambia, 9 to 15 fathoms (Miers). No. 1199. CRUSTACEANS OF WEST AHRICA—RATHBUON. 299 Genus LEUCOSIA Fabricius. LEUCOSIA SPINOSA (Miers). Ilia spinosa Miers, Ann. Mag. N. H. (5), VIII, 1881, p. 265, pl. xv, fig. 3. West African localities.—Canary Islands; Goree Bay, Senegambia, 9 to 15 fathoms (Miers). Family DORIPPID®. KEY TO THE WEST AFRICAN GENERA OF THE FAMILY DORIPPID2. A. The anterior extremity of the buccal cavern passes between the antennules to or even beyond the tip of the front; the afferent branchial apertures are situated in front of the bases of the chelipeds, a bridge of the carapace TUDNICIAYEND Sc oece csoaa5 6565e5 a Soess Sonees Ga a50—0 boo5es sodene Soacdeesee Dorippe. A’. The anterior extremity of the buccal cavern either stops at, or does not reach as far as the basal joint of the antennules; the afferent branchial openings are situated immediately in front of the bases of the chelipeds ........... Hthusa. Genus DORIPPE Fabricius. DORIPPE ARMATA Miers. Dorippe armata WHITE, Manuscript, MIERS, Ann. Mag. N. H. (5), VIII, 1881, p. 269, pl. xv, fig. 4. West African localities—Goree Bay, Senegambia, 9 to 15 fathoms (Miers); Island of St. Thomas (Osorio); Kongo Expedition (White’s type); Benguela (Osorio). | Genus ETHUSA Roux. ETHUSA MASCARONE (Herbst). Cancer mascarone HERBST, Natur. Krabben u. Krebse, I, 1785, p. 191, pl. Xt, fig. 69. Ethusa mascarone Roux, Crust. Médit.,; 1828 [p. 83], pl. x vit. Range of typical form.—Mediterranean; West Africa. West African localities.—Canary Islands (Miers); Goree Bay, Sene- gambia, 9 to 15 fathoms (Miers). Family RANINID As. Genus RANINA Lamarek. RANINA RANINA (Linnzus). Cancer raninus LINN2ZUS, Sys. Nat., 10th ed., 1758, p. 625. Ranina serrata LAMARCK, DESMAREST. Ranina dentata LATREILLE, MILNE-EDWARDS. Range.—Oriental region; West Africa (Osorio). West African locality.—Island of St. Thomas (Osorio, 1887). In 1889 Osorio expresses doubt as to the correctness of the label ‘St. Thomas.” 300 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII Tribe ANOMALA. Family DROMID Zé. Genus DROMIA Fabricius. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS DROMIA. A. Front simple. Be -Antero-lateralimaroinjenbtine seeeae senate see ee eee eee eae eee Sulvohispida. B’. Antero-lateral margin four-toothed ..-......--...--.- .----..--------- vulgaris. ACE Eom tb bwWiO-S pin Ode S27 se Sete aes Ne ees es rene eras een ss valerie aust spinirostris. DROMIA VULGARIS Milne-Edwards. Dromia vulgaris MILNE-EDWaRrDS, Hist. Nat. Crust., II, 1837, p. 173, pl. xx1, figs. 5-8. Range.—Mediterranean; Atlantic coast of Europe; West African islands. West African islands.—Canaries (Brullé); Princes Island, and St. Thomas Island (Osorio); St. Helena (Bate). DROMIA FULVOHISPIDA Miers. Dromia fulvohispida Miers, Ann. Mag. N. H. (5), VIII, 1881, p. 270, pl. xv1, fig. 1. West African locality—Goree Bay, Senegambia, 9 to 15 fathoms (Miers). DROMIA SPINIROSTRIS Miers. Dromia spinirostris Miers, Ann, Mag. Nat. Hist. (5), VIII, 1881, p. 271, pl. xv1, fig. 2. West African localities.—Goree Bay, Senegambia, 9 to 15 fathoms (Miers); Princes Island and St. Thomas Island (with a piece of wood on its back) (Osorio). Suborder MACRURA. Tribe HIPPIDA. Family HIPPIDA. Genus HIPPA Fabricius. HIPPA CUBENSIS (Saussure). Remipes cubensis SAUSSURE, Rev. Mag. Zool. (2), IX, 1857, p. 503. Remipes scutellatus Mimrs, Jour. Linn. Soc. London, XIV, 1879, p. 319. (Not Hippa scutellata Fabricius, 1793.) Range.—Florida Keys to Brazil; Bermuda (Henderson); West Africa and adjacent islands. West African localities—Cape Verde Islands (Studer, Miers, Cun- ningham, Henderson); Dahomey (Osorio); St. Thomas (Osorio); Isla das Rolas (Osorio); Quinchoxo (Studer); Ascension Island (Miers, Benedict). No. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. 301 The generic name Hippa has here a different signification from that commonly indicated. Hippa was established by Fabricius in 1787.! Five species were assigned to it, one of which should still remain in the genus. Of these five species four were removed in 1798 by Fabricius himself to other genera, namely, the species symnista, dorsipes, and scabra to Albunea, and the species variolosa to Symethis=Zanclifer Henderson, 1888. The single original species, adactyla, left by Fabri- cius in the genus Hippa, should be regarded as the type of the genus. This species was later made the type of the genus Remipes by Latreille, 1806, under the name Remipes testudinarius. Remipes, therefore, becomes a synonym of Hippa. Tribe PAGURIDEA. Family CQANOBITID 4. Genus CC NOBITA Latreille. CG! NOBITA RUBESCENS Greeff. Cenobita rugosus GREEFF, SB. Ges. Beford. Naturw. Marburg, 1882, No. 2, ». 28 (not Milne-Edwards). Cenobita rubescens GREEFF, SB. Ges. Beférd. Naturw. Marburg, 1884, No. 2, p.53.— Osorio, Jor. Sci. Lisboa, XI, 1887, p. 222. West African islands.—St. Thomas Island (Greeff, Osorio); Rolas (Greeff, Osorio). Apparently one species only inhabits these islands, and was designated first by Greeff as C. rugosus Milne-Edwards, and later as a distinct species, C. rubescens Greeff. Osorio records it under both names. According to Greeff, these hermits on the island of St. Thomas inhabit many different kinds of shells as well as the tests of the sea urchins, Hchinometra subangularis and Hipponoe esculenta. They are numerous near the beaches, but migrate into the interior, distributing and misplacing their marine shells over the whole island, as the growth of the inhabitant or the injury to the shell requires its abandonment. In such cases they often take refuge in land shells, and returning sea- ward scatter these again far from the place where they have arisen and properly occur. For example, hermits were found on the beach at the mouth of a river in land shells, which naturally do not occur on the island at less than 800 meters altitude. Osorio found some examples living in the grains of a palm, Hlais guineensis. Family PAGURID 2. KEY TO THE WEST AFRICAN GENERA OF THE FAMILY PAGURIDX. A. Pleon soft and membranaceous, imperfectly segmented. B. First and second abdominal segments without genital appendages. C. Fifth leg of male on left side without an appendage at base. D. No movable rostriform process. ' Mantissa Insectorum, pp. 329, 330. 302 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXI. E. Chelipeds very unequal and dissimilar. F, Left cheliped the larger. Third maxillipeds approximate at base. Petrochirus. F’. Right cheliped the larger. Third maxillipeds distant at base.. Pagurus. Ki’. Chelipeds equal or subequal, and similar. F. Dactyli of second and third pairs of feet not twisted - ..--. Clibanarius. F’. Dactyli of second and third pairs of feet twisted..-.-.------ Isocheles. D’. A movable rostriform process between the eye stalks. Left cheliped the IEWRGR Whee Shades ond a55 Seb Soobos pao meo Load unaboueoSooS oa0oOs Diogenes. C.’ Fifth leg of male on left side with an appendage at base. D. Appendage more or less spirally twisted ...----.-.---..----- Spiropagurus. 1D’. Appendage short and curved.-.......-..-.-----.-----.-------- Anapagurus. B’. First and second abdominal segments provided with genital appendages. Paguristes. A’. Pleon composed of seven distinct segments -......-.-.Glaucothoe, a larval form. Genus PETROCHIRUS Stimpson. (Includes Pagurus Stimpson. ) KEY TO THE WEST AFRICAN SPECIES OF THE GENUS PETROCHIRUS. A. Hands with an oval cavity on the upper surface near the inner margin. - cavitarius. A’. Hands without an oval cavity on the upper surface near the inner margin. B. Upper surface of propodus of large cheliped more or less spinous. C. Upper surface of propodus of large cheliped crossed obliquely by rough striz. D. Strie spinous only toward their inner side --...-...-..-......----arrosor. D’. Strie spinous throughout their length -..-.......-..... arrosor pectinatus. C.’ Upper surface of propodus of large cheliped with spines arranged partly in lo oeatiqnclbneE Os) Sok ose obblego cou coegdccdox onlesiggcans coos: pustulatus. B’ Upper surface of propodus of large cheliped covered with small irregular plates overlapping like tiles -.......-....--..--.----....-granulimanus. PETROCHIRUS ARROSOR (Herbst). Cancer arrosor HERBsT, Natur. Krabben u. Krebse, II, 1796, p. 170, pl. XLItI, fig. 1. Pagurus strigosus Bosc, Hist. Nat. Crust., II, 1802, p. 77, pl. x1, fig. 3. Pagurus striatus LATREILLE, Hist. Nat. Crust., VI, 1803, p. 163. The type of this species is preserved in the Berlin Museum. Range.—Mediterranean; Portugal; West Africa, including islands; Japan (de Haan); Zebu, Philippines (Henderson); off Tablas Island, 100 to 115 fathoms (Henderson). West African localities.—Madeira (Stimpson, Miers, Studer); Cape Verde Islands, 47 fathoms (Studer); Goree Bay, Senegambia, 9 to 15 fathoms (Miers); Dakar to 8 meters, Goree, 15 meters, and Rufisque, 6 meters (Chevreux and Bouvier). PETROCHIRUS ARROSOR PECTINATUS Ortmann. Pagurus striatus var. pectinata ORTMANN, Zool. Jahrb., Syst., VI, 1892, p. 284, pl. x11, fig. 10. Range.—Brazil (Ortmann) ; Dakar, Senegal (O. F. Cook, collector). In this form, which may prove to be a distinct species, the last two joints of the third foot of the left side have a longitudinal median sulcus on the outer surface much deeper than in any specimens of typical P. arrosor. NO. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. 303 PETROCHIRUS GRANULIMANUS (Miers). Pagurus granulimanus Miers, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 276, pl. xv1, fig. 3.—CHEVREUX and BouvikR, Bull. Soc. Zool. France, XVI, 1891, p. 254; Mém. Soc. Zool. France, V, 1892, p. 116, pl. 111, figs. 11-15. West African localities.—Cape Verde Islands (Milne-Edwards and Bouvier); Dakar, Goree, and Rufisque (Chevreux and Bouvier); Goree Bay, 9 to 15 fathoms (Miers); Dakar (O. F. Cook, collector); Sene- gambia (Ortmann). PETROCHIRUS CAVITARIUS Osorio. Petrochirus ? cavitarius OSORIO, Jor. Sci. Lisboa, XI, 1887, p. 228. Petrochirus cavitarius Osorio, Jor. Sci. Lisboa (2), I, 1889, p. 139. West African localities—Cape Verde Islands; Princes Island; Loanda; Angola (Osorio). PETROCHIRUS PUSTULATUS (Milne-Edwards). Pagurus pustulatus MILNE-EDWARDs, Ann. Sci. Nat. (3), X, 1848, p. 60. Eupagurus ? pustulatus STIMPSON, Proc. Acad. Nat. Sci. Phila., X, 1858, p. 238. Petrochirus pustulatus CHEVREUX and BOUVIER, Bull. Soc. Zool. France, XVI, 1891, p. 254; Mém. Soc. Zool. France, V, 1892, p. 112, pl. 10, figs. 6-10. West African localities.—Goree (Milne-Edwards); Dakar (Chevreux and Bouvier), Genus PAGURUS Fabricius. = EKupagurus Brandt, KEY TO THE WEST AFRICAN SPECIES OF THE GENUS PAGURUS. A. Upper surface of right cheliped with a median longitudinal ridge. B. Ridge prominent; depressions deep and relatively smooth .---...-.. excavatus. B’. Ridge low; depressions shallow and granulate ..--...----..---.. sculptimanus. g' , dep s I A’. Upper surface of right cheliped without ridges. Be Hand much longer than wide \22224--5--2..-s25+ 22-2. 2-2-2 hss eee ee: inermis. ‘3B’. Hand as wide as long (in the palmar portion) .--.-....----...---- triangularis. PAGURUS EXCAVATUS (Herbst). Cancer excavatus HERBST, Natur. Krabben u. Krebse, II, 1791, p. 31, pl. x x11, fig. 8. Pagurus angulatus Risso, Crust. Nice, 1816, p. 58, pl. 1, fig. 8. Pagurus excavatus WHITE, List Crust. Brit. Mus., 1847, p. 59. Eupagurus angulatus STIMPSON, Proc. Acad. Nat. Sei. Phila., X, 1858, p. 237. Range.—Mediterranean; Bay of Biscay; Goree Bay, Senegal, 9 to 15 fathoms (Miers). I have not attempted to give the complete synonymy of this species. From the series of specimens in the U. 8S. National Museum, I judge that P. meticulosus Roux is distinct from P. excavatus (Herbst). It is probable that this last should be called P. alatus Fabricius, described from Iceland, in 1775; type not extant. 304 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. PAGURUS SCULPTIMANUS (Lucas). Lupagurus sculplimanus Lucas, Expl. Sci. Algérie, Zool., I, Crust., 1846, p.32, pl.11, fig. 6. -CHEVREUX and Bouvier, Bull. Soc. Zool. France, XVI, 1891, p. 253; Mém. Soe. Zool. France, V, 1892, p. 104, pl. 11, figs. 18-20. Range.—Mediterranean; West Africa. West African localities. alyeadeie and Canaries (Milne- Edwards and Bouvier); Bay of Goree, 15 meters (Chevreux and Bouvier). PAGURUS TRIANGULARIS (Chevreux and Bouvier). Eupagurus triangularis CHEVREUX and BOUVIER, Bull. Soc. Zool. France, XVI 1891, p. 253; Mém. Soc. Zool. France, V, 1892, p. 93, pl. 1, figs. 9-15. West African localities—Cape Verde Islands (Milne-Edwards and Bouvier); Bay of Dakar, 8 meters (Chevreux and Bouvier). PAGURUS? INERMIS (Chevreux and Bouvier). EHupagurus? inermis CHEVREUX and BOUVIER, Mém. Soc. Zool. France, V, 1892 p. 109, pl. 111, figs. 1-5. West African locality—Bay of Dakar, 8 meters (Chevreux and Bouvier). Genus CLIBANARIUS Dana. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS CLIBANARIUS. A. Dactyli of second and third pairs of feet shorter than propodi. B. Claws covered with short conical spines or tubercles. C7 Ambulatory feet pune tate-2 see ses se eee eee eisai ee eeeiecer senegalensis. C’. Ambulatory feet not punctate....-...----.------------.---------- equabilis. B’. Claws covered with flat granulated scales.....-...-..----.--..-------- melitat. A’. Dactyli of second and third pairs of feet longer than propodi. B. Second and third pairs of feet diagonally banded. C. Propodi of second and third pairs of feet short, less than tives times as loug AS W1de sso US aus VISAS Seen see Sep se eee ere ers) sirens emer ers africanus. C’. Propodi long and slender, more than three times as long as wide... virescens. B’. Second and third pairs of feet not banded nor striped. C. Movable finger of cheliped the length of the palm ...---. clibanarius, variety ~ C’. Movable finger longer than the palm (measured along inner margin) -.- cooki. CLIBANARIUS AEQUABILIS Dana. Clibanarius equabilis Dana, Crust. U.S. Expl. Exped., I, 1852, p. 464; 1855, pl. XxXIx, fig. 4.—AuRIviuLius, K. Sv. Vet.-Akad. Handl., XXIV, 1898, p. 12, pl. rv, fig. 8. Range.—Tahiti (Dana); West Africa and islands. West African localities—Madeira (Dana, Stimpson); Porto Praya, Cape Verde Islands(Dana); Princes Island (Osorio; identification doubt- ful); Kamerun, not far from Bibundi, in the sea (Aurivillius). CLIBANARIUS SENEGALENSIS Chevreux and Bouvier. Clibanarius senegalensis CHEVREUX and BouvisER, Bull. Soc. Zool. France, XVI, 1891, p. 256; Mém. Soc. Zool. France, V, 1892, p. 131, pl. rv, figs. 7-11. West Africa.—Dakar, Senegal (Chevreux and Bouvier). NO. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. 305 CLIBANARIUS MELITAI Chevreux and Bouvier. Clibanarius melitat CHEVREUX and BouvikEr, Bull. Soc. Zool. France, XVI, 1891, p. 255; Mém. Soc. Zool. France, V, 1892, p. 135, pl. 1v, figs. 1-6. West Africa.—Dakar, Senegal (Chevreux and Bouvier). CLIBANARIUS COOKI, new species. Allied to C. cubensis (Saussure) = C. sclopetarius Stimpson, not Herbst. Eyes long and slender; second and third pairs of feet not striped. In most of its characters this species resembles C. cubensis of the eastern coast of America. The anterior part of the carapace is pro- portionally shorter than in that species. The eyes, though longer and slenderer than in other West African species, are shorter than in cubensis; they reach slightly beyond the peduncles of the antenne and antennule. Peduncles of antennule very lit- tle longer than those of the an- tenn. Lastsegment of peduncle of antenne more slender than in cubensis. Chelipeds, as in cubensis, equal. fern rane The penultimate segments of the — Puaric appeNDAGEs,Dor- ainpulatonys lees, are) Marrower sets =. than in cubensis. These legs are without stripes or bands of color; otherwise they re- semble those of cubensis. The dactylus of the second leg is about as long as its propodus and one-third its Fic. 2.—Ciipanakius carpus; that of the third leg as long as its propodus COOKI. LEFT LEG ° F or seconp parr, 0d two-thirds its carpus. OUTER FACE. Two- Color in alcohol.—Carapace yellowish; legs yellow- ae NATURAL ish red. Dimensions.—Male: Length of anterior portion of carapace, 13.8 mm.; width of same, 11.5 mm.; length of eyestalk, 11 mm.; length of dactylus of first ambulatory, 20.5 mm. Type locality.—Mouth of Mesurado River, Monrovia; O. F. Cook, collector; one male (Cat. No. 22156, U.S.N.M.). CLIBANARIUS AFRICANUS Aurivillius. Clitanarius africanus AURIVILLIUS, K. Sv. Vet.-Akad. Handl., XXIV, 1898, p. 12, pl. Iv, fig. 7. West African locality—Kamerun; in river at Bibundi, in shells of brackish-water snails; Kitta. (Aurivillius.) CLIBANARIUS VIRESCENS (Krauss). Pagurus virescens KRAUSS, Die Sudafr. Crust., 1843, p. 56, pl. rv, fig. 3. Clibanarius virescens DANA, Crust. U.S. Expl. Exped., I, 1852, p. 466. Range.—Natal coast (Krauss); the Zaire or Kongo (Osorio); Fijis, Balabac Passage and Sooloo Sea (Dana; identification doubtful). roe: NaMe vole xxit 20 306 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII CLIBANARIUS CLIBANARIUS (Herbst). Cancer clibanarius Hersst, Natur. Krabben u. Krebse, II, 1791, p.20, pl. xxi, fig. 1. Clibanarius vulgaris Dana, Crust. U.S. Expl. Exped., I, 1852, p. 462. “Clibaunarius vulgaris (HERBST) var.?,” THALLWITZ, Abh. u. Ber. K. Zool. Mus., Dresden, 1890-91 [1891] No. 3, p. 33. Range.—Oriental region; Africa. African localities. —Ogove (Thallwitz); Angola or the Kongo (Osorio) ; South Africa (Krauss). Genus ISOCHELES Stimpson. — ISOCHELES ? GRACILIS Miers. Tsocheles ? gracilis Mirrs, Ann. Mag. N. H. (5), VIII, 1881, p. 277, pl. xvt, fig. 4. West African locality.—Goree Bay, Senegambia, 9 to 15 fathoms (Miers). Genus DIOGENES Dana. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS DIOGENES. A. Carpus and palm of left cheliped oblong, much longer than wide. B. Large hand with an oblique spinulous crest on its outer face ...... brevirostris. B’. Large hand without an oblique spinulous crest on its outer face... pugilator. A’. Carpus and palm broad, the carpus subtriangular, the palm broader than aos ayaa eatin 3 eRe este Cec el SA cae ot ad meta ae RR ib AES Of denticulatus. DIOGENES PUGILATOR (Roux). Pagurus pugilator Roux, Crust. Médit., 1828, pl. x1v, figs. 3, 4. Diogenes varians Miers, Ann. Mag. N. H. (5), VIII, 1881, p. 272. Diogenes pugilator BOUVIER, Mém. Soc. Zool. France, 1V, 1891, p. 396. Range-—From England to Kotonou, on the coast of Gabun; Medi- terranean; Black Sea. West African localities—Senegal: Goree Bay, 9 to 15 fathoms (Miers); Bay of Dakar (Chevreux and Bouvier); Rufisque (Bouvier). Monrovia and Liberia (Bouvier). Kotonou, Gabun (Chevreux and Bouvier). Variety OVATA Miers. Diogenes varians var. ovata Mizrs, Ann. Mag. N. H. (5), VIII, 1881, p. 274. West Africa.—Goree Bay, 9 to 15 fathoms (Miers); Bay of Dakar, 5 and 8 meters (Chevreux and Bouvier); Senegambia (Ortmann). Variety GRACILIMANA Miers. Diogenes varians var. gracilimana Miers, Ann. Mag. N. H. (5), VIII, 1881, p. 274. West Africa.—Goree Bay, 9 to 15 fathoms (Miers); Kotonou, Gabun (Milne-Edwards and Bouvier). NO. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. 307 Variety INTERMEDIA Bouvier. Diogenes pugilator var. intermedia BOUVIER, in Chevreux and Bouvier, Mém, Soc. Zool. France, V, 1892, p. 122. West Africaa—Bay of Dakar, 8 meters (Chevreux and Bouvier); Monrovia (Milne-Edwards and Bouvier); Liberia (Bouvier); Kotonou, Gabun (Bouvier). _ DIOGENES BREVIROSTRIS Stimpson. Diogenes brevirostris STIMPSON, Proc. Acad. Nat. Sci. Phila., X, 1858, p. 245. African localities—Porto Praya, Cape Verde Islands (Studer); Monrovia (Studer); Simons Bay, 12 fathoms (Stimpson); Simons Bay, 10 to 20 fathoms (Henderson); Cape of Good Hope (Ortmann). DIOGENES DENTICULATUS Chevreux and Bouvier. Diogenes denticulatus CHEVREUX and Bouvier, Bull. Soc. Zool. France, XVI, 1891, p. 254; Mém. Soc. Zool. France, V, 1892, p.122, pl. 111, figs. 16-20. West African localities.—Rufisque, Senegal (Chevrenx and Bouvier); mouth of Mesurado River, Monrovia (O. I’. Cook, collector). Genus SPIROPAGURUS Stimpson. SPIROPAGURUS ELEGANS Miers. Spiropagurus elegans Miers, Ann. Mag. N. H. (5), VIII, 1881, p. 278, pl. xv1, fig. 5. West African localities.—Off Gomera, Canaries, 78 fathoms (Hender- son); Goree Bay, 9 to 15 fathoms (Miers); Goree, 15 meters (Chevreux and Bouvier). Genus ANAPAGURUS Henderson. ANAPAGURUS CURVIDACTYLUS Chevreux and Bouvier. Anapagurus curvidactylus CHEVREUX and BOUVIER, Bull. Soc. Zool. France, XVI, 1891, p. 253; Mém. Soc. Zool. France, V, 1892, p.91, pl. 11, figs. 2-8. West African localities —Bay of Dakar, 8 meters; west of Goree, 15 meters (Chevreux and Bouvier). Genus PAGURISTES Dana. PAGURISTES HISPIDUS Milne-Edwards and Bouvier. Paguristes hispidus MILNE-EDWARDS and BOuvVIER, Ann. Sci. Nat. (7), Zool., XIII, 1892, p. 208. West Africa.—Liberia (Milne-Edwards and Bouvier). Genus GLAUCOTHOE Milne-Edwards. GLAUCOTHOE CARINATA Henderson. Glaucothoe carinata HENDERSON, Challenger Rept., XX VII, 1888, p. 84, pl. 1x, fig. 1.—CHEVREUX and BouviER, Bull. Soc. Zool. France, XVI, 1891, p. 256; Mém. Soc. Zool. France, V, 1892, p. 138, pl.1v, figs. 12-24. West African localities.—Coast of Sahara, 80 meters; Goree, 15 meters; Rufisque, 6 meters (Chevreux and Bouvier); Arguin Bank (Milne- Edwards and Bouvier). 308 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Tribe PORCELLANIDEA. Family PORCELLANID 2A. Genus PORCELLANA Lamarck. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS PORCELLANA. A. Carapace Smoothie. 2 x25 sans e eos See er eee ee eee ec eee speciosa. A’. Carapace marked with prominent lines. B. Front little inclined and with straight border -.....-..--..--.------.- mattost. B’. Front inflected. Hands covered above with small granules disposed in STOUPS. 2.5 See LEDS Salas Se i nee ee NE rep he etee emer eerae bella. PORCELLANA SPECIOSA Dana. Porcellana speciosa DaNa, Crust. U. 8S. Expl. Exped., I, 1852, p. 417; 1855, pl. XXVI, fig. 8. Range.—Pacific Ocean: Drummond Island, Kingsmills Group; Wakes Island; Mangsi Islands, Balabac Straits; Raraka, Paumotu Archipelago. West Africa. West African localities.—Princes Island (Osorio); St. Thomas Island (Osorio). PORCELLANA MATTOSI Osorio. Porcellana mattosi OSORIO, Jor. Sci. Lisboa, XI, 1887, p. 229. West African locality.x—Loanda (Osorio). PORCELLANA BELLA Osorio. Porcellana bella Osorio, Jor. Sci. Lisboa, XI, 1887, p. 229. West African locality—Loanda (Osorio). deribe: BE AIZAS SEND EASE Family CALLIANASSID 2. KEY TO THE WEST AFRICAN GENERA OF THE FAMILY CALLIANASSIDA. A. Second pair of feet minutely chelate........-.-.-.--..-.---.---.---+ Callianassa. A’, Second pair of feet not chelate.........-...-...-..------------------- Upogebia. Genus CALLIANASSA Leach. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS CALLIANASSA. Me Rostrumiplree-splme dese ates sa esse eer ene sie seer tera eee eereets turnerana. A’. Rostrum five-spined.....-..---.---.---- SS cas BS fe oee ceretee cease areas diademata. CALLIANASSA TURNERANA White. Callianassa turnerana WHITE, Proc. Zool. Soc. London, 1861, p. 42, pl. VI.— A. M1ILnE-Epwarbs, Nouv. Arch. Mus. Hist. Nat. Paris, VI, 1870, p. 89. West Africa.—Kamerun (White, A. Milne-Edwards). No. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. 309 cc] CALLIANASSA DIADEMATA Ortmann. Callianassa diademata ORTMANN, Zool. Jahrb., Syst., VI, 1891, p. 56, pl. 1, fig. 11. Range.—Africa, probably West Africa (Ortmann). Genus UPOGEBIA Leach. UPOGEBIA FURCATA (Aurivillius). Gebia furcata AURIVILLIUS, K. Sv. Vet.-Akad. Handl., XXIV, 1898, p. 13, pl. 1, figs. 5-7. West African locality.—In decaying fragments of wood, rivers of Bibundi, Kamerun (Aurivillius). Tribe LORICATA. Family SCYLLARID 4. KEY TO THE WEST AFRICAN GENERA OF THE FAMILY SCYLLARIDA. A. Exognath of external maxillipeds with a flagellum; rostrum prominent. Scyllarides. A’. Exognath of external maxillipeds without a flagellum; rostrum very short, TRUM CA Sodson causes eaSase osesan Ga vooo Senco coc oed Hope sccsooeeuosss Scyllarus. Genus SCYLLARUS Fabricius. SCYLLARUS ARCTUS PARADOXUS Miers. Scyllarus (Arctus) arctus var. paradoxus Miers, Ann. Mag. N. H. (5), VIII, 1881, p. 364. West African localities.—Goree Bay, Senegal, 9 to 15 fathoms (Miers). The typical form of this species is found not only in western and southern Europe, and at Madeira, the Canaries, and Azores (Mus. Comp. Zool.), but there are specimens in the U.S. National Museum from off Cape Hatteras, North Carolina, 49 fathoms (Albatross station 2596), from Pensacola, Florida, and from Mazatlan, Pacific coast of Mexico. It is quite distinct from S. americanus (Smith) = S. gundlachi von Martens, of the West Indian region. Genus SCYLLARIDES Gill. SCYLLARIDES LATUS (Latreille). Scyllarus latus LATREILLE, Hist. Nat. Crust., VI, 1803, p. 182. Scyllarus herklotsii PEL, in Herklots, Addit. Fauna Afr. Oce., 1851, p. 14, pl. 1, figs. 14, 15. Scyllarus dehaanit HERKLOTs, Addit. Fauna Afr. Oce., 1851, p. 14, pl. u, figs. 12, 13. Range.—Mediterranean ; Portugal; Azores (U.S.N.M.); West Africa, including islands; Cuba (von Martens). West African localities.—Canaries (Milne-Edwards); near Boutry, Guinea (Herklots); St. Helena (Bate). eS 310 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. Family PALINURID &. KEY TO THE WEST AFRICAN GENERA OF THE FAMILY PALINURIDA, A. Upper part of antennular segment almost horizontal, broad, so that the bases of the outer antenne are distant from each other .....-...---.----..--- Panulirus. A’. Upper part of antennular segment oblique, rather narrow, so that the bases of the outer antenne are near together -......--..-..2--..--..---.---.---- Palinostus. Genus PANULIRUS White. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS PANULIRUS. A. Exognath of outer maxillipeds without palpus and reaching to the middle of the RAGOMG ONG co secs shoe so bsee Sogo ceccoo bccesd pasos seEsaD sessed sata Dee regius. A’. Exognath of outer maxillipeds wanting...-.--.---.-------------------- ornatus, PANULIRUS REGIUS Capello. Panulirus regius CAPELLO, Desc. tres esp. nov. Crust. Afr. Occ., Lisboa, 1864, p. 5, fig. 1; Mem. Acad. R. Sci. Lisboa, Cl. Sci. Nat., new ser., II, 1865, Pt. 2. 2 Senex longipes PFEFFER, Verh. Nat. Ver. Hamb.-Altona (2), V, 1881, p. 41. West African localities.—Cape Verde Islands (Capello); Liberia (Mus. Phila. Acad. Nat. Sci.); Monrovia and St. Thomas Island (Pfeffer); St. Thomas Island (Osorio); Benguela (Osorio). PANULIRUS ORNATUS (Fabricius?, Herklots). Palinurus ornatus HERKLOTS, Addit. Fauna Afr. Occ., 1851, p. 15. West Africa.—St. George-del-Mina, Guinea (Herklots). Genus PALINOSTUS Bate. PALINOSTUS PHOBERUS Rochebrune. Palinustus phoberus ROCHEBRUNE, Bull. Soc. Philom. Paris (7), VII, 1883, p, 173. West African localities.—Mouth of the Gambia and of the Casamance (Rochebrune). Tribe CARIDEA. Family PEN AIDS. KEY TO THE WEST AFRICAN GENERA OF THE FAMILY PENZIDZ, A. First three pairs of trunk-legs with exopods.......-.---..------------- Peneus. A’. Trunk-legs without exopods.......--..----..-----0--- --+--+++-------- Sicyonia. Genus PENAUS Fabricius. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS PENZUS. A. Carapace without a median groove running from the rostrum to the posterior NMP AINE e Eee nas Goes Go eauGKs GoeoaR soauas descouluccgadod booed velutinus. A’, Carapace with a median groove behind the rostrum. B. Base of feet of third pair armed with strong spines...-..---...----- caramote. B.’ Base of feet of third pair without spines. Ci Lelson;wathjlateralespineses esse ese eee asaser emia canaliculatus. C/* Telson without lateral’spines 2% e-csse an. soe eae ee eer brasiliensis. NO. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. 311 PENAUS CARAMOTE (Risso). Alpheus caramote Risso, Crust. Nice, 1816, p. 90. Peneus caramote DESMAREST, Dict. Sci. Nat., XXVIII, 1823, p. 320. Range.—Mediterranean, Atlantic coast of Spain and Portugal, West Africa. West African locality.—Benguela (Osorio). PENAZUS CANALICULATUS (Olivier). Palemon canaliculatus OLIVIER, Eneye. Méth., Hist. Nat., Entom., VIII, 1811, p. 660. Peneus canaliculatus MILNE-EDWARDS, Hist. Nat. Crust., II, 1837, p. 414. Range.—Indo-Pacifie region; West Africa. West African locality.—Benguela (Osorio). PENZUS BRASILIENSIS Latreille. Peneus brasiliensis LATREILLE, Nouy. Dict. Hist. Nat., XXV, 1817, p. 156. Range.—Hudson River at Sing Sing, New York (Stimpson), to Rio Grande do Sul, Brazil (Ortmann); West Africa. West African localities.—Rufisque, Senegal (Miers); Elmina, Ashantee (Benedict); Whydah (Miers); St. Thomas Island (Osorio). PENAUS VELUTINUS Dana. Peneus velutinus Dana, Crust. U.S. Expl. Exped., I, 1852, p. 604; 1855, pl. x1, fig. 4. Range.—Lahaina, Sandwich Islands (Dana); Oriental region, from Japan to Gulf of Suez; West Australia; West Africa. West African localities.—Goree Bay, Senegal, 9 to 15 fathoms (Miers); St. Thomas Island (Osorio). Genus SICYONIA Milne-Edwards. SICYONIA SCULPTA Milne-Edwards. Sicyonia sculpta MILNE-EDWaRDS, Ann. Sci. Nat. (1), XIX, 1830, p. 840, pl. 1x, figs. 1-8. ftange.—Mediterranean; West Africa. West African localities.—St. Vincent, Cape Verde Islands (Bate); Goree Bay, Senegal, 9 to 15 fathoms (Miers). Family CRANGONID i. Genus PONTOPHILUS Leaeh. PONTOPHILUS CATAPHRACTUS (Olivi). Cancer cataphractus OLIv1, Zool. Adriat., 1792, p. 50, pl. 111, fig. 1 (teste Ortmann). Pontophilus cataphractus ORTMANN, Proce. Acad. Nat. Sci. Phila., 1895, p. 183. Range.—Mediterranean; Goree Bay, Senegal, 9 to 15 fathoms ( Miers). 312 PRUCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXIL ——— Family ALPHEID 2. Genus ALPHEUS Fabricius. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS ALPHEUS. A. A deep fissure the length of the orbital lobes separating them from the TROP os soo cusocdon Sono doSSue So0S cous cob5 SU eco Hoss. 5eue S500 intrinsecus. A’. No deep fissure between rostrum and orbital lobes. B. Orbital arches armed with a spine. C. Hands tuberculate on inner face...........--.-. tae Boek on At een tuberculosus. C’. Hands not tuberculate on inner face -..---..--...---.---------- macrocheles. B’. Orbital arches entire. C. Rostrum carinated. Merus of large claw without a spine .-.-..---- bouviert. C’. Rostrum not carinated. Merus of large claw with a spine at distal end of Tower Maron ce ke wire rete ace eeee sit oreie rece ieee notre paracrinitus. ALPHEUS BOUVIERI A. Milne-Edwards. Alpheus edwardsit Dana, Crust. U.S. Expl. Exped., I, 1852, p. 542; 1855, pl. xxx1v, fig.2. Not 4. edwardsit Audouin. Alpheus bouvieri A. MILNE-Epwarpbs, Bull. Soc. Philom. Paris (7), II, 1878, p. 231. West African localities.—St. Jago, Cape Verde Islands (Dana); off St. Vincent, Cape Verde Islands (Bate, as ediwardsii); Cape Verde Islands (A. Milne-Edwards); Bibundi, Kamerun (Aurivillius, as edwardst). ALPHEUS MACROCHELES (Hailstone). Hippolyte macrocheles HAILSTONE, Mag. Nat. Hist., VIII, 1835, pp. 395, 549, 552, 553. : Alpheus megacheles NORMAN, Ann. Mag. Nat. Hist. (4), II, 1868, p. 175. Alpheus pontederie ROCHEBRUNE, Bull. Soc. Philom. Paris (7), VII, No. 4, 1883, p. 174. Range.—Europe; West Africa. West African locality—Senegambia (Rochebrune), in Pontederia natans, rivers of Leybar, Thiank, and Dakar-Bango, where they empty into the sea. | Coutiere' says that Hailstone uses the specific name “ megacheles” on the figure, ‘ macrocheles” in the text.” Norman also? refers to ““‘Hippolyte megacheles Hailstone.”* In the copies of the eighth volume of the Magazine of Natural History, to which I have access, the name ‘¢ megacheles” is not given. On page 395 the name “macrocheles” is used, and there is no figure on that page. ‘ Macrocheles” is used again on pages 549, 552, and 553. Figure 49, on page 553, has no name beneath it, but in the list of engravings on page vii is given as “¢ macrocheles.” ‘Ann. Sci. Nat. (8), IX, 1899, p. 10. 3 Ann. Mag. Nat. Hist. (4), II, 1868, p. 175. 2Mag. Nat. Hist., VIII, 1885, p. 395. 4Mag. Nat. Hist., VIII, p. 395. No. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN. 313 ALPHEUS PARACRINITUS Miers. Alpheus paracrinitus Miers, Ann. Mag. Nat. Hist. (5), VIII, 1881, p. 365, pl. xvt, fig. 6. Range.—Djibouti (Coutiére); West Africa. West African localities.—Goree Bay, Senegal, 9 to 15 fathoms (Miers); Praia das Conchas, St. Thomas Island (Osorio); Loanda (Osorio). ALPHEUS TUBERCULOSUS Osorio. Alpheus tuberculosus OSORIO, Jor. Sci. Lisboa (2), II, 1890, p. 201. West African locality.—Iogo-logo, St. Thomas Island (Osorio). ALPHEUS INTRINSECUS Bate. Kee, Alpheus intrinsecus BATE, Challenger Rept., Zool., XXIV, 1888, p. 557, pl. ©, fig. 1. Range.—Off Bahia, Brazil, 7 to 20 fathoms (Bate); Iogo-Iogo, St. Thomas Island, West Africa (Osorio). Family HIPPOLYTID A. Genus Hi PPOLYyiLE Leach: HIPPOLYTE species (not described). Hippolyte species Osorio, Jor. Sci. Lisboa (2), I, 1889, p. 137. West African locality—Praia das Conchas, St. Thomas Island (Osorio). Family ATYID 5. KEY TO THE WEST AFRICAN GENERA OF THE FAMILY ATYIDZ, A. Carpal joint of second pair of feet distally excavated........---..-..----. Atya. A’, Carpal joint of second pair of feet normal, not distally excavated ---.. Caridina. Genus ATYA Leach. ATYA SCABRA Leach. Atys scaber LEACH, Trans. Linn. Soc. London, XI, 1815, p. 345. Atya gabonensis GIEBEL, Zeitschr. f. d. gesammt. Naturwiss., Berlin (2), XII, 1875, p. 52. Atya scabra and gabonensis ORTMANN, Proc. Acad. Nat. Sci. Phila., 1894, pp. 409, 410. Atya margaritacea var. claviger AURIVILLIUS, K. Sv. Vet.-Akad. Handl., XXIV, 1898, p. [14], pl. m1, figs. 5-8. Range.—Mexico; Nicaragua; Costa Rica; Orinoco; West Indies; West Africa, and islands. West African localities.—St. Paul’s River, Mount Coffee (O. F. Cook, collector); Beulah and Muhlenburg Mission (O. F. Cook, collector); SB lAt PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XX. Etome, Kamerun, in brooks ‘Aurivillius); Rio Papagaio, Princes Is- land (Osorio); St. Thomas Island (Greeff, Osorio); Rolas (Greeff); Gabun (Giebel); Duque de Bragan¢a (Osorio), Known in Africa as “¢Sutt-feelee” or ‘“‘ Bitter crayfish.” Genus CARIDINA Milne-Edwards. CARIDINA TOGOENSIS Hilgendorf. Caridina togoensis HILGENDORF, SB. Ges. Naturf. Fr., Berlin, 1893, p. 156. West African localities—Bismarckburg and A deli, Togoland (Hilgen- dorf). Family PALASMONID &. KEY TO THE WEST AFRICAN GENERA OF THE FAMILY PALHZMONID. A. Mandibles with a palpus. ; B. Frontal margin of carapace with one tooth on each side; a second on the hepatic region nearly in the same horizontal line.....-......-.---- Bithynis. B’. Frontal margin of carapace with two antennal teeth, one above the other. Palemon. ING Wiehe atnnOUis & TORMOUR. s6h6 s6666n be5S56 Gand boon gdduud done G506 Palemonetes. Genus PALAMON Fabricius. KEY TO THE WEST AFRICAN SPECIES OF THE GENUS PALAMON. A. Rostrum with seven teeth above and three below....---...---.------ maculatus. A’. Rostrum with eight teeth above and four or five below. B. Fingers of second pair of feet much longer than palm; carpus much shorter LINENa) WM a oes cogocuendaso sondcudoose ones sooapUesoo67 SoGGOSGa0C hastatus. B’. Fingers of second pair of feet much shorter than palm; carpus longer than MINOW) cagucd casos paaaue sobsao CUNa DODO aad maDSuS Sa5Cb0.COb0KE Ueooce edwardsit. PALZMON EDWARDSII Heller. Palemon longirostris MILNE-EDWARDS, Hist. Nat. Crust., II, 1837, p. 392; not P. longirostris Say, nor P. longirostris Milne-Edwards, Hist. Nat. Crust., I, 1837, p. 394, Palemon edwardsii HELLER, Crust. siidl. Europa, 1863, p. 265.—Carus, Fauna Medit., I, 1885, p. 473. Leander edwardsii ORTMANN, Zool. Jahrb., Syst., V, 1891, p.515. Range.—Bay of Biscay; Mediterranean; West Africa. West African localities.—Monrovia and Mount Coffee, Liberia (O. F. Cook and G. M. Collins, collectors). ‘The African specimens are appar- ently the same species that exists in the Mediterranean and the Bay of Biscay. I have, however, no specimens for comparison. NO. 1199. CRUSTACEANS OF WEST AFRICA—RATHBUN, 315 PALAZEMON HASTATUS Aurivillius. Palemon (Leander) hastatus AURIVILLIUS, K. Sv. Vet.—~Akad. Handi., XXIV, 1898, p. 27, pl.iv, figs. 3-6. West African locality.— Kamerun, in the sea at Beticka ba Mallale (Aurivillius). PALAMON MACULATUS (Thallwitz). Leander maculatus THALLWItTZ, Abh. Ber. K. Zool. Mus. Dresden, 1890-91 (1891), No. 3, p. 19. Locality.—West Africa (Thallwitz). Genus BLETAYGNIS Philippi: KEY TO THE WEST AFRICAN SPECIES OF THE GENUS BITHYNIS. A. Large chelipeds with palm cylindrical or nearly so. B. Rostrum with more than two teeth on lower margin. C. Carpus of large chelipeds regularly cylindrical ........-...----. acanthurus. C’. Carpus of large chelipeds thickened in the distal portion. Jamaicensis vollenhovenii. B’. Rostrum with one or two teeth on lower margin.....--------.-.----. paucidens. A’, Largechelipeds with palmswollen and compressed, wider than the carpus. -olfersii. BITHYNIS JAMAICENSIS VOLLENHOVENI!I (Herklois). Palemon vollenhoventti HERKLOTS, Tijdschr. v. Entom., Nederl. Entomol. Vereen., I, 1858, p. 96. . West African localities.—Mouth of Mesurado River, Monrovia (O. F. Cook, collector); St. Paui’s River, Mount Coffee (O. F. Cook, collector); Guinea (Herklots); Lagos (Ortmann); Fluss Meme, Kamerun (Auri- villius); St. Thomas Island, in Rio Quija and Rio Gamoela, 200 meters altitude (Osorio); Kongo coast (de Man); Upper Kongo (J. H. Camp, collector); Kuanza River at Cunga(Benedict, as jamaicensis?); Benguela, Catumbella, Biballa, (Osorio, as jamaicensis). BITHYNIS ACANTHURUS (Wiegmann). Palemon acanthurus WIEGMANN, Arch. f. Nat., II, Pt. 1, 1836, p. 150. Palemon macrobrachion HERKLOTS, Addit. Faun. Afr. Occe., 1851, p. 15. Palemon africanus KINGSLEY, Bull. Essex Inst., XIV, 1882, p. 107. ftange.—Mouth of Rio Grande, Texas; Antilles; Escondido River, Nicaragua; Brazil; Ecuador (von Martens); West Africa. West African localities.—Sierra Leone (von Martens); near Boutry, Guinea (Herklots); Kamerun (Aurivillius): Fluss Meme, Bibundi and Ekundu; St. Helena (Bate). - BITHYNIS PAUCIDENS (Hilgendorf). Palemon (Eupalemon?) paucidens HILGENDORF, SB. Ges. Naturf. Fr. Berlin, 1893, p. 155. West African locality.—Adeli, near Bismarckburg, Togoland (Hil- gendorf). 316 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. BITHYNIS OLFERSII (Wiegmann). Palemon olfersii W1EGMANN, Arch. f. Nat., II, Pt. 1, 1836, p. 150. Palemon spinimanus MILNE-EDWARDS, Hist. Nat. Crust., II, 1837, p. 399. Range.—Auntilles; Brazil; Gulf of Dolce, Costa Rica; La Paz, Lower California; Cape St. Lueas; West Africa. West African localities—Etome, Kamerun, in streams (Aurivillius); Rio Papagaio, Princes Island (Osorio); St. Thomas Island (Greeff, Osorio); Rolas (Greeff). Genus PALA MONETES Heller. PALAZEMONETES TRISPINOSUS Aurivillius. Palemonetes trispinosus AURIVILLIUS, K. Sv. Vet.-Akad. Handl., XXIV, 1898, p. 29, pl. 1v, figs. 1, 2. West African locality.—Kitta, Kamerun, in a brook (Aurivillius). DESCRIPTION OF A NEW BIRD OF THE GENUS DENDRORNIS. By CHARLES W. Ricumonp, M. D., Assistant Curator, Division of Birds. The specimen here described was sent to the U. 8. National Museum several years ago by Mr. Frank b. Armstrong, who collected it at Alta Mira, Mexico. Over twenty skins of Dendrornis flavigaster, obtained at the same place, were also received, but none of them shows any approach to this apparently new species. It is in general similar to D. flavigaster, but differs in having the throat and malar patch streaked instead of uniform buff, these markings, as well as those of the remainder of the underparts, being for the most part dentate, rather than oblong; the under wing coverts are variegated, not uniform. That these characters are not those of an immature stage of D. flavigaster is shown by several young examples of the latter collected in Mexico by Mr. EK. W. Nelson (Biological Survey collection), in which the pattern of coloration is similar to that of the adults. The new species may be described as DENDRORNIS STRIATIGULARIS, new species. Type.—Cat. No. 1385157, U.S.N.M.; female adult, Alta Mira, Tamau- lipas, Mexico, November 18, 1894; Frank B. Armstrong, collector. Top of head and nape dull black, each feather with a prominent elongated buff shaft spot; lores buff; sides of head dusky, streaked with buff; chin buff; rest of under parts, including under tail-coverts, hair-brown, the feathers with long (mainly dentate) buff shaft-mark- ings, bordered with dusky black, most numerous on the throat and breast, and almost obsolete on the flanks and abdomen. Back bistre, broadly streaked with buff, the markings edged with dusky black; rump russet; upper tail-coverts burnt umber, the lateral feathers with buffy shaft-lines. Tail burnt umber; wings burnt umber, paler on the under surface, and terminal portion of inner webs of first five primaries dusky. Lesser wing-coverts russet, with narrow paler shaft-lines; PROCEEDINGS U. S. NATIONAL MUSEUM, VOL. XXII—No. 1200. 318 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. _ middle coverts bistre, with black-bordered buffy shaft-markings; greater coverts exteriorly bistre, becoming burnt umber over the terti- aries, with more or less concealed buffy shaft-lines, bordered on the — outer webs with blackish; primary coverts bistre; edge of wing nar- rowly marked with buff and black; under wing-coverts (exteriorly) bistre, varied with buff and dusky black; inwardly russet. Dimensions.— Wing, 4.15 inches; tail, 3.41 inches; tarsus, 0.90 inches; culmen, 1.50 inches. : DESCRIPTIONS OF THREE NEW BIRDS FROM LOWER SIAM. By CHARLES W. RICHMOND, M. D., Assistant Curator, Division of Birds. The birds here described as new were contained in a large collection made by Dr. W. L. Abbott in the province of Trong, Lower Siam. The collection, which was made during several trips to this locality, embraces about 1300 skins, including many not before recorded from the region, and some, like Mthopyga temminckii, Geocichla horsfieldi, and G. interpres, not previously known from the mainland. A very fine speci- men of the rare Thaumatibis gigantea is also contained in the collection, which, with Dr. Abbott’s customary liberality, has been sent to the U.S. National Museum. ZETHOPYGA ANOMALA, new species. Type.—Cat. No. 160366, U.S.N.M.; male adult, slopes of the Khaw Song, Trong, Lower Siam, at about 2500 feet, March 2, 1897; Dr. W. L. Abbott, collector. This species is readily distinguished from 1. saturata, its nearest ally, and does not require a full description. It differs from 1. saturata in smaller size, deeper red on mantle; the dark red wash on sides ot breast is more pronounced; the rump lacks the yellow band character- istic of other species of the genus, and in this respect it is unique, although in 4. saturata the yellow of the rump is considerably restricted. In two males of Dr. Abbott’s series of fifteen skins there is a slight edging of greenish olive on the rump of the same color as the abdomen, very different, however, from the bright, clear yellow of saturata and other members of the genus. In the female of anomala the yellow rump band is, strange to say, very prominent. Unfortunately, I have no females of saturat« for com- parison, but those ef anomala are darker and less yellow beiow than the figure of the female of satwrata in Shelley’s monograph. The adult male measures: Wing, 2 inches; tail, 2.53 inches; culmen. 0.61 inch; tarsus, 0.57 inch. PROCEEDINGS U. S. NATIONAL Museum, VOL. XXII—No. 1201. ; 319 320 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL. CRINIGER SORDIDUS, new species. Type.—Cat. No. 169893, U.S.N.M.; male adult, Khow Sai Dow, Trong, Lower Siam, 2500 feet, February 14, 1899; Dr. W. L. Abbott, collector. Upper surface of head bistre, somewhat darker on crest; lores, a narrow orbital ring, and a small spot above and posterior to eye, pale smoke gray; cheeks and ear-coverts brownish gray, the latter with lighter shaft-streaks; throat pure white; breast and abdomen deep yellowish buff, washed with smoke gray on the former; under tail- coverts brownish buff, the feathers with paler tips; sides of body pale olive; sides of neck, back, scupulars, rump, and wing-coverts, olive, with a brownish wash on the latter, darkest on the primary coverts. Upper tail-coverts, tail, and wings, deep bistre, lighter on the first — named; inner webs of wing-feathers blackish brown, with a narrow edging of pale wood-brown on under surface; under wing-coverts yel- lowish buff. ‘ Length, 94 inches.” Dimensions.—Wing, 4.30 inches; tail, 4 inches; tarsus, 0.83 inch; culmen, from base, 0.82 inch. A series of nine skins, all of which differ from C. gutturalis in their greater dimensions, proportionally longer crest and tail; the crest is paler; the back, rump, and sides of chest have less greenish olive; there is practically no yellow on the under parts and under wing-coverts; the tips of rectrices and borders of inner webs of same are not of a pale shade as in C. gutturalis. The nearest rela- tive of CO. sordidus is probably C. ruficrissus Sharpe, of Borneo, but of this form I have no specimens for comparison. TURDINULUS GRANTI, new species. Type.—Cat. No. 169874, U.S.N.M.; male adult, Khow Sai Dow, Trong, Lower Siam, 1000 feet, February 11, 1899; Dr. W. L. Abbott, collector. General color above hair brown, becoming mummy-brown on the rump and upper tail-coverts, the feathers of the forehead, crown, nape, mantle, and back edged with blackish brown; feathers of the mantle with whitish shaft streaks. Wings and tail chestnut, the wing-coverts like the wing, but lesser coverts with pale shaft streaks; middle and greater coverts, secondaries, and tertiaries with small, triangular, apical white spots. Sides of head and neck, including lores, a superciliary stripe extending to the nape, cheeks, and ear-coverts butfy white, each feather tipped with brownish black; a spot before eye and a line behind eye extending over the ear-coverts, brownish black. Chin, throat, and upper abdomen white, becoming ochraceous buff on the lower abdo- men; breast buff, the feathers with almost obsolete dusky edges, the feathers on sides of breast with more prominent dusky brown borders. Sides of body, thighs, flanks, and under tail-coverts, mummy-brown, paler than on the rump; under wing-coverts, edge of wing, and axillars No. 1201. NEW BIRDS FROM LOWER SIAM—RICHMOND. 321 buff, darker on the outer part of the coverts. “Iris dark brown; feet fleshy brown; bill dark horny brown above, dull leaden beneath.” Dimensions.— Wing, 2.10 inches; tail, 0.96 inch; tarsus, 0.88 inch; culmen, 0.57 inch. Five specimens from Trong appear to be similar to the Klang exam- ple mentioned by Mr. Grant! and it is owing to his careful exposition of the genus that I have been able to make a Satisfactory determina- tion of the species. i This species resembles 7. exsul (of which we have one specimen, from Mount Poeh, Borneo), but differs in being smaller, mainly buffy white below, a little deeper on the lower abdomen, with the breast buffy white, the feathers with indistinct dusky edges; the feathers of sides of breast with more prominent dusky borders, but without shaft-streaks; under wing-coverts and edge of wing are buff, brownish on the outer edge of the former. The sides of body, flanks, thighs, and under tail-coverts are lighter than in T. ersul. The young bird is somewhat similar to the adult, but is more fulvous below; the black edges of feathers on head and back are hardly appar- - ent, and the superciliary stripe and spots on wings are fulvous instead of white. 'Tbis, 1896, p. 60. Proc. N. M. vol. xxii 21 ed v. Sy RY ON THE GENERA OF THE CHALCID-FLIES BELONGING TO THE SUBFAMILY ENCYRTIN 2. By WiLLIAM H. ASHMEAD, Assistant Curator, Division of Insects. — Among the many thousands of minute Hymenopterous insects exist- ing in the world and to which have been given the popular name Chalcid flies, there is probably no single family that is of more interest or of greater economic importance than the family Encyrtide. The species in this family, like the vast majority of other Chalcid-flies, live parasitically in the eggs, larvie, or pupe of other insects, and hardly _asingle order of Hexapodous insects is wholly free from their attacks; but in this family, and more especially in the subfamily Encyrtini, the Species are of more than ordinary interest and importance, since so many of them are found attacking and destroying the scale- and bark- lice (Coccide and Aleyrodide) and the plant-lice (Aphidide and Psyl- lide), containing some of the most destructive and troublesome pests with which fruit-growers, agriculturists and florists have to contend. The subfamilies Eupelmine, Encyrtine, and Signiphorine, the latter based upon my genus Signiphora, established in 1880, as I have already _ published elsewhere, constitute a distinct family in the subfamily Chal- cidoidea, to which the family name Encyrtide should be applied. The subfamily Eupelminz was subjected to a generic revision nearly three years ago by the present author, and was published in the Pro- ceedings of the Washington Entomological Society for 1898. He now presents a similar work on the subfamily Eneyrtinze The manuscript, as originally written, with the above title, was read before the Washington Entomological Society, May 13, 1897. Since that time, however, Dr. L. O. Howard ' has characterized a number of new genera in the group, and the paper has been withheld from publi- cation, in order to incorporate the new genera and to make certain necessary changes in nomenclature. ° The family Encyrtidz is readily distinguished from all others in the 1Proc. U. S. Nat. Mus., XXI, 1898, p. 231. PROCEEDINGS U. S. NATIONAL MUSEUM, VOL. XXII—No. 1202. : 323 324 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Chaleidoidea by the large, non-impressed mesopleura, the large triangu- lar mesepisternum, which does not extend to the front coxe, and by the large saltatorial spur of the middle tibiw, which is most frequently long and stout, or dilated at base, and usually armed with a double row of black teeth or stiff bristles. No other family possesses this large saltatorial middle tibial spur, and only a few species, in one or two of the other families, possess the non-impressed mesopleura. Family LX VII. ENCYRTID A! The three subfamilies mentioned above, into which this family is divided, may be separated upon tie following characters: Mesonotum not entire, most frequently depressed or concave on disk, rarely convex, the parapsidal furrows distinct, or at least more or less present; marginal vein WISE VU AOE MEM ease eGing MADEN eS CoS adGce aaebocause. Subfamily I. EUPELMIN Zz. Mesonotum entire, convex or subconvex, the parapsidal furrows always entirely wanting. Marginal vein rarely very long, often punctiform, and always very much shorter than the subcostal vein; stigmal vein usually short but distinct, rarely very long; scutellum normal, the axille never closely united to form a transverse linear sclerite at base of scutellum; middle tibiz without lateral spurs. Subfamily Il. ENcyrRTIN«. Marginal vein long, as long or nearly as long as the subcostal vein; scutellum abnormal, the axillce closely united without suture between, forming a trans- verse linear sclerite at base of scutellum proper; middle tibice with lateral spurs, the lateral apical spur lobed .......-----.--2.. Subfamily IIL. SIGNIPHORINA. Subfamily Il FHNCY RTIN 4. This subfamily, as here defined, is identical with Forster’s family Encyrtoide or Mayr’s Encyrtiden, and is based upon Latreille’s genus Encyrtus, established in 1809, The genus was very imperfectly characterized by Latreille, who indicated as types two species, namely, Chrysis ? infidus Rossi (Iliger) and Mira macrocera Schellenberg. The latter is now manifestly not applicable; since it itself is the type of a well-characterized genus. Chrysis infidus Rossi, therefore, becomes the type of Latreille’s genus Encyrtus. Chrysis infidus Rossi was very imperfectly described and has long remained unknown, but I have identified it as the Coccid parasite known to us to-day under the name Comys scutellata Swederus. In the original description nothing was said of the characteristic tuft of hairs on the scutellum, and it has thus been overlooked by writers on these insects. In 1820, Dalman, a Swede, redescribed the genus Hncyrtus and de- scribed many hew species. His diagnosis, however, was necessarily a broad one, and in reality represented the family rather than the genus, ‘For characters of the other families see Classification of the old family Chal- cidide by W. H. Ashmead, Proc. Wash. Ent. Soe., IV, 1898-99, pp. 242-249. ‘No. 1202. GENERA OF THE ENCYRTINE—ASHMEAD. Bae and in it he included many species that are now relegated to many of our more modern genera. From the publication of Dalman’s paper down to the year 1856 several new genera were erected by Dahlbom, Nees, Westwood, Haliday, Walker, and hKatzeburg, either upon some of the Dalmanian species, or upon new discoveries. In 1856 a great advance was made in our knowledge of the group by Dr. Arnold Forster, in his well known publication Hymenoptero- logische Studien, Heft II, in which he for the first time properly defined the group as a family under the name Encyrtoidex, brings together the known genera in tabular form, and describes no less than twelve new genera. A year later, or in 1857, Dahlbom established four new genera, namely, Ageniaspis, Huscapus, Lonchocerus, and Trimorphocerus. The second is identical with Dinocarsis Forster, the third with Mira Schellenberg, while the fourth and last seems to have been based upon a male Both- riothorax. The Russian General Motschulsky, in 1863, erected his genus Cal- lipteroma' from Ceylon; while a few years later an Italian, Camillo Rondani, described in the group three additional genera, wretchedly characterized, namely, Tineophaga, 1868, Tineomyza, 1872, and Selitre- chus, 1877. None of them, however, belong here, but all belong to the family Eulophide. Tineophaga equals Hulophus Geoffroy; Tineomyza is apparently identical with Tetrastichus Haliday; while Selitrechus, as I have identified it, is a good genus in the subfamily Entedonine. In 1876 the European genera and species of the Encyrtinze were sub- jected to a thorough revision, by Dr. Gustav Mayr, of Vienna, Austria, in a work entitled Die Europiiischen Encyrtiden, biologisch und sys- tematisch bearbeitet. In this most valuable contribution Dr, Mayr has shown that several of the previously described genera were synonyms, being based prin- cipally upon the opposite sex or upon apterous or subapterous forms of other genera. Dr. Mayr in his work, however, established 8 new genera, gave full descriptions of all the known genera and species, except some of Walker’s, besides characterizing 25 species as new to science. About the time of the appearance of Dr. Mayr’s excellent work on the group, the well-known Swedish entomologist, Dr. C. G. Thomson, was also engaged in a systematic study of the Encyrtine, and the result of his labors appeared shortly afterwards.’ The title-page of this work antedates that of Dr. Mayr’s, and I was at first inclined to give Thomson priority for certain genera which prove to be synonymous with those of Dr. Mayr’s. _Since my paper was read, however, Dr. L. O. Howard has most conclusively shown, ‘Von Dalla Torre records this in his Catalogus Hymenopterorum under the family Braconid. ? Skandinaviens Hymenoptera, IV, pp. 112-183. 326 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. from a letter from Dr. Christopher Aurivillius, of the Stockholm Museum, the incorrectness of this title-page, and proves without the shadow of a doubt the priority in publication of Dr. Mayr’s work. The group was called by Thomson a tribe—Encyrtina—and he divided it into three sections, based principally upon mandibular characters, besides giving an excellent table for distinguishing the genera. Hight new genera and 26 new species were described. Three of these genera are, however, Synonyms: Liocarus equals Prionomastix Mayr; Nob- rimus equals Homalotylus Mayr; while Trechnites equals Metallon Walker. Thomson designates as the type of Encyrtus, E. scutellaris Dalman, a species evidently synonymous with Hneyrtus (Chrysis) infidus Rossi. The work of Thomson is unquestionably of great value, and he has drawn attention to several important structural characters not pre- viously or subsequently noticed. In my own work I have made use of some of these characters, one of which—the shape and dentition of the mandibles—although not easily seen, I consider of tribal value. In 1888 Christopher Aurivillius discovered and described his genus © Arrhenophagus, a remarkable form in the group. A year later, 1889, De Stefani, an Italian, established his genus Hoplopsis, a genus still unknowa to me in nature, but which, judging from the description, does not belong to this subfamily, but to the sub- family Eupelmine, “‘ Thorax foveolatus” being a character found only in the Eupelminze. © In the United States until within comparatively recent years very little original work was done in the family. The first American who described a species in the group was Thomas Say, whose Serlion terminalis, described in 1828 and placed by Cresson in the genus NScelio, in the family Proctotrypide, is an encyrtine belonging to Mayr’s genus Homalotylus. It has been since redescribed twice: Once by Dr. Shimer as Hutelus scymne, and again by Dr. Howard as Homalotylus obscurus. Since Say’s time, besides myself, the only one in this country who has given special attention to these inseets is Dr. L. O. Howard, whose valuable contributions toward elucidating the habits, genera, and spe- cies of this difficult group, found in America, are known to all working entomologists. He has characterized many new genera and many new species—many beautifully figared—and it is through his kindness and liberality in placing at my disposal all his material in the group that I am able to incorporate all of these genera in my tables. I desire here also to express my thanks and obligations to the well- known hymenopterologist, Dr. Gustay Mayr, of Vienna, Austria, the leading HKuropean authority on the group, for sending me during our correspondence, extending over an interval of nearly twenty years, Specimens of most of the European genera. With these preliminary remarks I shall now proceed tbh the classi- fication of the eel " No. 1202. GENERA OF THE ENCYRTINZ—ASHMEAD. + 327 CLASSIFICATION. The subfamily Encyrtine, for convenience and the ready recognition of the genera, if upon no other grounds, may be divided into four tribes, as follows: TABLE OF TRIBES. Mandnblessedentater acute abape Xeni selene seu eeismcle asin sieeciace = ses nese selene 4 Mandibles bi- or tri-dentate, or broadly truncate at apex, never acute; tarsi always HONG S 56 bocacs GoSeS0uedG bond Ho Sc oSobon cassos Doedad pdadccccsusssece 2 2. Mandibles stout, 3-dentate at apex, although the teeth are sometimes very minute, the labrum usually conspicuous...--.......-.------.---..------- 3 Mandibles not stout, or only moderately so, rather Jong and always bi-dentate at apex, the labrum free; abdomen in female with the hypopygium large, lanceolate or plowshare shaped, inclosing the ovipositor and extending beyond the anus; second abdominal segment most frequently large; anten- nee usually inserted just above the clypeus, rarely just below the middle Olf IN 1NCOsboads Gacsco suosed Geog ssuascoe Coon eoan Elser Tribe I. ECTROMINI. Mandibles stout, but short and polished, the apex broadly truncate, unarmed or nearly so; labrum conspicuous; abdomen with the hypopygium less evi- dently prominent, not projecting; body usually stout, not metallic; anten- ne inserted below the middle of the face; hind tibize with two spurs...... Tribe Il. ENCYRTINI. 3. Hypopygium not prominent; hind tibiz with only one spur; body most fre- quently, but not always, metallic; antenne variable..... Tribe III. Mrrint. 4. Tarsi 4- or 5-jointed; marginal vein punctiform or subobsolete .-..........-.-.-- Tribe TV. ARRHENOPHAGINI. Tribe 1. ECTROMINI. The species falling in this tribe are, as a rule, more elongate and narrower, the marginal vein proportionately longer, the stigmal vein shorter, while the mandibles are longer, narrower, and always bidentate atapex. This last character, together with the prominent hypopygium, in the female, may always be depended upon to distinguish a species falling in this group. The genera may be recognized by the use of the following table: TABLE OF GENERA. WIG is aS Sees Ses I RN a ee Ee i a aS ren Wa 12 Females: Face with a distinct carina between the basés of antennxz ....-.-.--..---..---- 8 Face without such a carina, rarely with a rounded ridge. Antenne inserted just above the clypeus or below the middle of the face. Speciesinyjine lessor subbapterouse.. see. emcee eases scone ee =e 6 SPSclesmwpinige diene ne eee Men NeCN SE wars d aloe co eaie 2s eae te 2 2. Front wings with the marginal vein rather long, at least twice as long as the stigmal vein or even longer, the stigmal and postmarginal veins short; scape slender, cylindrical. Wings fuscous, marked with white bands or.rays; frons broad, the lat- eral ocelli nearer to the eye margin than to the front Oce ls ae enya eee eer ae aire oie (1) Calocerinus Howard. Wings hyaline; frons not so broad, the lateral ocelli not nearer to the eye margin than to the front ocellus. (2) Tetralophidea Ashmead, new genus. 328 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. Front wings with the marginal vein short, the postmarginal vein very short. 5 - Front wings with the marginal vein long, linear, longer than the stigmal vein, the stigmal and postmarginal veins not short, or very rarely short, the postmarginal most frequently longer than the stigmal. : Funicle 6-jointed without ring-joints .......-...---.----.-.----- voto caer 3 Funicle 4-jointed with two ring-joints. Frons minutely shagreened, with minute punctures scattered over the surface; scape slender, cylindrical, the flagellum at the most subclavate; stigmal vein very oblique, subelavate. (3) Meromyzobia Ashmead, new genus. 3. Stigmal and postmarginal veins not short, usually long, the latter the longer, sometimes as long as the marginal; front wings without a discoidal blotch ys 22 es a aes ya a ie Re ie Nea ee 4 Stigmal and postmarginal veins short, the latter sometimes hardly developed; front wings with a discoidal blotch. Frons very minutely shagreened, with minute punctures scattered over the surface, or almost smooth. Head viewed from in front longer than wide; scutellum with a tuft of long hairs; abdomen scarcely longer than the head and thorax united, the ovipositor not or scarcely exserted; flagellum gradually broadened toward apex, compressed, the pedicel hardly as long as the first joint of funicle; the joints after the third broader than long. (4) Chrysopophagus Ashmead. Head viewed from in front not longer than wide, if anything a little wider than long; scutellum without a tuft of long hairs; abdo- men distinctly longer than the head and thorax united, with a prominent ovipositor which is longer than half the length of the abdomen; flagellum subclavate, not compressed, the funicle joints longer than thick. (5) Tineophoctonus Ashmead, new genus. 4, Frons minutely shagreened, with minute punctures scattered over the surface; scape not compressedly dilated beneath, cylindrical or sub- cylindrical. Antenne not longer than the body, usually somewhat shorter, the first joint of the flagellum rarely more than twice as long as thick; stigmal vein not curved; axilla just meet at inner basal WOOO sae era ae on Oe Se Re ral arses (6) Lricydnus Walker. Antenne longer than the body, the first joint of the flagellum about five times as long as thick; stigmal vein gently curved; axillie unite and form a slight ridge at base of scutellum. (7) Leptomastix Forster. Frons regularly punctate; scape beneath broad, compressedly dilated, the fla- gellum long, filiform, cylindrical; scutellum triangular, acute at apex, the axille somewhat widely separated. (8) Dinocarsis Forster. Frons not regularly punctate, broad and smooth, margaritaceously shining, or at the most feebly shagreened; scape long, slender, the fla- gellum long, subcylindrical, feebly compressed, the first joint the longest, somewhat more than twice as long as thick; scutellum with two deep fovee at base. (9) Ectroma Westwood. 5. Frons finely shagreened or alutaceous, subopaque; lateral ocelli close to the eye margin; scape usually broadly compressedly dilated be- neath, the flagellum slender, cylindrical; axille not quite meet- No. 1202. GENERA OF THE ENCYRTINA—ASHMEAD. 329 ing at inner basal angles; front wings with a hairless line extending obliquely inward from the stigmal vein. : (10) Anagyrus Howard. Frons narrow, almost smooth; lateral ocelli close to the eye margin; scape broadly dilated beneath, the flagellum compressed, fusiform, as seen from the side; axillee meeting at inner basal angle. (11) Anusia Forster, 6. Frons smooth, margaritaceously shining, or at the most microscopically sha- ANNALS CoS soa SSeS SAS SU SO eee us GOO Sia eee ae aiente etna r Frons regularly punctate or coriaceous or shagreened with distinct scattered punctures over the surface. Scutellum subtriangular, rounded, not acute at apex; scape slender, cylin- drical, or at most subclavate. Flagellum filiform or subclavate, not compressed; axilla touching each other at base of scutellum. 5 Funicle 4-jointed, with 2 minute ring-joints; ocelli normal, the lateral close to the eye margin but not touching it. (3) Meromyzobia Ashmead. Funicle 6-jointed, with no ring-joints; ocelli very minute, the lateral lying close to the eye margin.......Hricydnus Walker. Flagellum compressed; axille separated not touching each other at base of scutellum ; lateral ocelli not close to eye margin; ovipositor exserted, the hypopvgium very prominent lanceolate. (12) Henicopygus Ashmead, new genus. Seutellum triangular, acute at apex; scape dilated and compressed beneath. : (8) Dinocarsis Forster. 7. Scutellum subtriangular; head transverse. Scutellum with two fovee at base; scape and flagellum not at all compressed, Cylindricale ese (9) Ectroma Westwood = Sphenolepis Nees. Seutellum without fovex at base; scape broadly dilated beneath, the flagel- lum compressed, fusiform......--........ (11) Anusia Forster. Scutellum lunate; head seen from above subquadrate, wider than the thorax, the lateral ocelli rather close to the eye margin; thorax with a silvery pubescence ........-......-.-.(13) Beocharis Mayr. SE MONS EMO LMM O AO eerers eaeteiats = , D SIE cS? 5 ast on PALAEARCTIC NEOTROPICAL REGION. REGION. ORIENTAL CENTRAL — — JAUSTRALIAN REGION. ty Et] ETHIOPIAN ZI LA BECION: é Zi ZL ZL 22 MAP SHOWING THE DISTRIBUTION XVIII PL. PROCEEDINGS, VOL. XXII 160 140 120 100 80 60 40 20 eof 5 coe0c0 9 °% b00000900° 60 <=-~=-7 120 80 ae 160 140 PEARLY FRESH-WATER MUSSELS U. 6, NATIONAL MUSEUM PROCEEDINGS, VOL. XXIL PL. xvi 80 100 120 140 iso ‘ * |PALAAROTIOC REGION, {ORIENTAL SYYY ane” | \) CENTRAL N AMERICAN P REGION. AUSTRALIAN REGION, ETHIOPIAN REGION, XA RRS OX] MISSISSIPPI t OY | RRR REGION, eo ar eed ATLANTIC Y ML a RE >; i PLZZ ZLeg REGION, 140 120 100 60 80 100 120 140 160 80 60 40 20 ALY FRESH-WATER M USSELS MAP SHOWING THE DISTRIBUTION § ry Prieta elrA a: He bie ar moses, SYNOPSIS OF THE NAIADES—SIMPSON, 505 number of forms are found in each of them that are not at all closely related to any of those of the other. These regions may be tabulated as follows: AREAS OF THE NAIAD REGIONS.! Hurope. : Northern and Western Asia. PLGeIReUIG sesaee North Africa to the Desert. Pacific drainage of North America. Ethiopian ....... Africa, south of the Sahara. Oriental ........./ASia, south of the Himalayas. \East Indies to the Solomon Islands. Australia. Australian ..-_... \ Tasmania. . lNew Zealand. Part of New Guinea. Neotropical .- -.-- South America. (Cental America. Central American, Mexico, east of the Cordillera. lictribes Entire Mississippi Valley and the Guif drainage from west Florida to the Rio Grande. Mississippian ----; Mackenzie River system. [zea River of the North. Great Lakes. 5 GER coe jLower St. Lawrence and rivers of eastern Canada. Atlantic drainage of the United States. I have hesitated long before placing a considerable number of the species of Southeastern Asia in and near North American genera. I had hoped to be able to examine the soft parts of a number of these Oriental forms, but have been disappointed, and as nothing is known of the anatomy of most of them I have been compelled to classify by shell characters alone. It is certain that the beak sculpture of a large num- ber of Naiades of this area is essentially concentric, and not zigzag radial, as it is in most of the furms of the Oriental region. The shell characters of the ponderous Chinese Uniones are certainly much like those of Quadrula in the form, the teeth, the beak sculpture, and especially the deep, compressed beak cavities. A great number of fossil forms from the Tertiary strata of Asia and Hastern Europe seem to show the closest relationship to the American Quadrulas. Hyriopsis, ~Cristaria, Chamberlainia, and Pilsbryoconcha seem to be related by shell characters to the alate forms of Lampsilis, and even the strange Pseudospatha of Africa would appear to belong here. I recognize about one thousand species and 82 varieties of Unionide, having reduced tothe synonymy a great many names that most authors have believed to stand for valid species. Of these, 533 species and 55 varieties belong in North America and 101 in South America. The list contains 117 species of Mutelide and 11 varieties, and of these 80 ‘For map of Naiad Regions see plate. 506 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. species are South American. The following list shows the number of — species in each genus and the distribution of the genera: 19 ice.) bo THe UNIONIDZ’ Truncilla, United States. 3 varieties. Micromya, United States. | 8 varieties. Lampsilis, North America. Pseudospatha, Tropical Africa. Hyriopsis, Eastern Asia. Chamberlainia, Southeastern Asia. Cristaria, Eastern Asia. Lepidodesma, Eastern Asia. Pilsbryoconcha, Southeastern Asia. Medionidus, United States. Nephronaias, Mexico, Central Amer- ica, Cuba. Glebula, United States. Obovaria, United States. 1 variety. Plagiola, North America. Tritogonia, United States. 1 variety. Cyprogeniay United States. 1 variety. Obliquaria, United States. Ptychobranchus, United States. Strophitus, North America. 1 variety. Anodonta, North America, Eastern | Asia, Palearctic. | 8 varieties. Colletopterum, Southeastern Europe. Is Gabillotia, Asia Minor. 1 variety. | Leguminaia, Southern Europe, Asia Minor. 1 variety. | Lastena, United States. Solenaia, Eastern Asia. Gonidea, United States. Anodontoides, North America. 2 varieties. Pegias, United States. Arcidens, United States. Symphynota, North America. 1 variety. Alasmidonta, North America. Hemilastena, United States. | 6 | 145 Ol RH bo Ot bo Ot bo YO — ol CO ee Margaritana, Circumboreal. Unio, North America, Palearctic. 13 varieties. Pleurobema, United States. 1 variety. Quadrula, North America, Hastern Asia. 12 varieties. Schistodesma, Eastern Asia. Gibbosula, Eastern Asia. Cuneopsis, Eastern Asia. Nodularia, Eastern Asia, Asia Minor, Tropical Africa. 6 varieties. : Harmandia, Southeastern Asia. Physunio, Southeastern Asia. Dalliella, Southeastern Asia. Grandidieria, Tropical Africa. Pseudodon, Eastern Asia. 1 variety. Parreysia, Southeastern Asia, Tropi- cal Africa. 8 varieties. Ptychorhynchus, Eastern Asia. 1 variety. Virgus, Southeastern Asia. Ctenodesma, Southeastern Asia. Rectidens, Southeastern Asia. Lamellidens, Southeastern Tropical Africa. 5 varieties. Trapezoideus, Southeastern Asia. 1 variety. Arconaia, Eastern Asia. Pseudavicula, Tropical Africa. Arcidopsis, Southeastern Asia. Tetraplodon, South America. 1 variety. Castalina, South America. Callonaia, South America. Hyria, South America. Prisodon, South America. Diplodon, South America, Austral- asia, South Africa, 6 varieties. Asia, MUTELID. Spatha, Tropical Africa. 3 varieties. Mutela, Tropical Africa. OU bo 4 Chelidonopsis, Tropical Africa. Brazzea, Tropical Africa. Pleiodon, Tropical A frica. Bro. 20s. _ SYNOPSIS OF THE NAITADES—SIMPSON. 507 _ 10 Monocondylea, South America. 53 Glabaris, South America. _ 4 Stheringella, South America. 8 varieties. _. 2 Fossula, South America. 8 Mycetopoda, South Ameriea. 3 Leila, South America. Total: 61 genera of Unionide; 11 genera of Mutelidie. I am inclined to believe with von Ihering that the primitive beak sculpture of the Unionid was radial, and in two species of Unios from what are believed to be Triassic or Permian strata of the Staked Plains of Texas,' which are probably the oldest forms known, the beaks clearly show strictly radial sculpture. Four other species trom the same lot are not in condition to exhibit this character. Now I take this to belong to the simplest, earliest, and most lowly organized form of unionoid life. I believe that the earlier Unios had the young contained in the inner branchiv alone, that there has been a gradual development from these primitive forms with simple, dull- colored, smooth shells, those of the male and female being alike, with radially sculptured beaks, the Hndobranchs, up to the highest forms of to-day, with concentric, doubly looped beak sculpture, with highly painted shells, in which those of the male and female are very different, with the young contained in distinctly marked ovisaes in the hinder part of the outer gills alone, the Hxvobranchs. The data for following these developments and the migrations of the Naiades are meager so far as fossil materiai is concerned. But, fortu- nately, while among the higher orders of life genera and even families appear, develop, grow old, and become extinct in a single geological age, the Unionide have held on unbroken from the Triassic or prob- ably an earlier geological age until now, and while there has been slow progress in the development of higher characters the primitive forms have not died out. I know of no important type of the family among the fossil species that may not be found somewhere to-day among the living ones. They seem to have migrated to a certain region, made a slight advance over the characters of their predecessors, aud to have continued down with but little change until to-day. When a new mInigration was made the same thing was enacted again. If the Unionide originated in North America during the Triassic or Some earlier period we may suppose that some members of the family mInigrated into South America during that or at a later period. All the species of that family in South America have radial beak sculpture (except Callonaia and Prisodon, in which the beaks seem to be smooth), and the young are contained in the inner gills alone, so far as we know. In some cases this sculpture is strictly radial; more often we find the central or all the bars curving a little toward each other below, and one or two of the middle pairs coalescing, the first move toward concen- tric beak sculpture. By an old,now partly submerged land bridge in the Antarctic region it is probable that a migration took place from South 1Proc. U.S. Nat. Mus., X VIII, 1896, pp. 381-385. 508 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. America to New Zealand and Australia, and slight changes in the way of progress are shown there. The beak sculpture is still radial, but the bars are decidedly curved toward each other below; they become slightly broken or nodulous, and each set is generally removed from the other a little, so that a space in the middle of the young shell issmooth. The young are contained in the inner gills, though Suter reports a few in the outer gills of one or two species and in all these Southern Hemi- sphere forms the shell has a dull color, and is nearly or quite rayless. Another migration took place to Southeastern Asia, and from there there was another to tropical Africa, possibly from Southern India over an old but now lost landway. In the forms of this region the beak sculpture becomes irregularly and variously zigzag radial, the surface is nodulous in many cases, and the shell is often bright colored and painted. Some of the recent species, such as Unio crispisulcatus, show nearly strict radial sculpture all over the shells; others which I have placed in the genus Lamellidens have almost such sculpture as is seen in the beaks of the Australian forms. In others the sculpture becomes slightly nodulous. Reasoning from analogy, and the few gravid specimens I have examined of these forms with the zigzagged beak sculpture, I presume that they all carry the young in the inner gills, though it is quite probable that some of them may have them in all four gills, and this would be a step in an upward direction. Some of these Asiatic and African forms with zigzag sculpture are quite short, inflated, and solid, and, in general, show characters strongly allied to those of our heavy Mississippi Valley forms (the latter of which I placein Quadrula), the various members of the genus Parreysia, for example. ; It is quite probable that from such forms the genus Quadrula sprung; that it developed in Asiatic streams, where it still seems to be repre- sented. In the Tertiary strata of eastern Europe and in parts of Asia this genus seems to be abundantly represented. It is a little dif- ficult to say from some of the living Asiatic forms whether the beak sculpture should be called sharply, doubly looped, or zigzag radial, and the same thing may almost be said of some of our North American forms. There probably existed at that period an old land way across from northeastern Asia to northwestern North America, and one which lasted a long time, or it may have been submerged and then reappeared again, for through long ages this has apparently been a highway for migrating Unionide. I think it not unlikely that the immediate progeni- tors of the magnificent and diversified series of Uniones found fossil in the Laramie beds came over from Asia among the earlier migrations; for it is a significant fact that among the Uniones of the Laramie for- mation in the United States we have a number of species which in general form closely resemble these recent Asiatic Parreysias, and that their beak sculpture is decidedly zigzag radial, just as it 1s to-day in these oriental forms. Associated with these Laramie species are others in No. 1205, SYNOPSIS OF THE NAITADES—SIMPSON. 509 which the beak seulpture is somewhat concentric and of a peculiar pattern seldom found among living Uniones, the ridges being nearly straight below and sharply pointed behind in a chevron-shaped pattern. I take it that the next step of progress was the development of the genus Pleurobema, or forms which are nearly allied to it; though the strange, smooth, elongated, wedge-shaped Cuneopsis, with its remarka- bly deep beak cavities and often distorted shells, and the eurious Gibbosula seem like Quadrulas making an effort to shape their shells something like those of Unio. In Plewrobema the shell is solid and rather triangular, the beaks are high and typically well forward, the beak sculpture is broken, but most nearly concentric, the beak cavities . are shallow, and the young occupy only the outer branchie. There are great numbers of species I should refer to this or closely allied genera in the oriental tertiaries, and many of them are knobbed. To-day the genus is confined to the Mississippi Valley and the northern drainage of the Gulf of Mexico, and all the species are smooth except P. wsopus and P. varicosa, which I place in the genus with some hesitation. This genus has an immense development in the waters of the Ten- nessee drainage, becoming less abundant as we advance northward, until in the Ohio River and its tributaries only three species are found, Pleurobema clava Lamarck, P. varicosa Lea, and P. wsopus Green. In the Tennessee and Cumberland systems all the species except the two last mentioned belong to the group typified by P. clava. In the Ala- bama River drainage and a few adjacent streams emptying into the Gulf there is a great development of this genus, but none of the species belong to the clava group. Now, if the genus migrated into the Ten- nessee system from the northwest, and it seems quite probable that it did, its presence in the Alabama River system would seem to prove the theory entertained by some geologists that the Tennessee formerly emptied into the Gulf, flowing down into what is now the Coosa River and into the Alabama. Additional proof of this is found in the fact that quite a number of the common Mississippi Valley species, such as Unio tuberculatus Barnes, U. rectus Lamarck, U. trigonus Lea, U. anodontoides Lea, U. ebenus Lea, and others are met with in the Tennessee, the Coosa, and the Alabama River systems, and Unio con- radicus and U. cumberlandianus, Tennessee River forms, occur in the Alabama system. That this southern outflow of the Tennessee ceased a long time ago is shown by the fact that in the Alabama drainage all the northern species of Uniones have a peculiar aspect, and several entire groups of Pleurobema have developed, which are distinet from anything found in the Tennessee. It is probable that the true Unios and their allies were next developed, with simple oval to elongated shells, and moderate beaks showing quite a variety of sculpture. It is generally concentric, being inclined to follow the growth lines, but sometimes the ridges are broken, and again they are somewhat doubly looped. The young occupy the outer 510 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII gills only, forming a pad-like marsupium. The genus is now found throughout a large part of the Palearctic region and North America generally, excepting the Pacific drainage. The Unios of what seems to bethe Gibbosus group are abundant in the Tertiary of eastern Europe. Unio davilai from Roumania is almost exactly like U. gibbosus, a recent species of the Mississippi Valley, and there were species no doubt closely allied in the Tertiary of the western United States. There were forms in Eastern Europe which seemed to connect Unio and Pleuwrobema, some of which were like P. clava and formed a connecting link with Quadrula. There were Quadrulas showing relationship with our Q. trigona, rubi- ginosa, pustulosa, pyramidata, and other forms. Psilunio craviovensis looks much like our Plewrobema wsopus and there are other striking examples of old forms resembling recent ones. Now, in Quadrula, Unio, Alasmidonta, and some of the other allied genera we not unfrequently see species or specimens which have the ordinary concentric or doubly looped beak sculpture, and in addition to this a number of fine, regularly radiating ridges in front or behind, or sometimes at each end of the ordinary sculpture, an atavistic develop- ment, probably. In some groups this character is quite constant; in others it is only occasionally seen. I have never noticed it in any of the higher genera in which the male and female shells are different. Up to this point the male and female shells had been essentially alike, and the ovisacks were not distinctly outlined, but formed smooth pads, the marsupium occupying practically the whole gill. In the American waters probably, a great change now began to take place in some of the Unionide. The ovisacs of many forms became distinctly marked out by a deep sulcus; a constriction developed in some instances around near the base of the marsupium, inside and out, so that the lower end of the ovisacs resembled little bulbs, and these were often filled with pigment of a different color from the rest of the ovisac. Ptychobran- chus, with its folded marsupium, may have developed from Unio; Cyprogenia and Obliquaria, with their narroy, central marsupia, and Dromus, in which it is hung all around the outer gills in short, distinet ovisacs, would seem to have descended from Quadrula by their shell characters. Inallof these the shells of males and females are essentially alike. In Medionidus there is sometimes quite a well-marked swelling at the central or post-basal part of the female shell which is absent in the male, but sometimes it is impossible to separate the shells of the two sexes. The marsupium consists of irregular ovisacs just behind or almost at the center of the outer gills. Inthe strange Tritogonia the female shell differs remarkably from that of the male, having developed a broad, posterior wing, filled with a flap of the mantle, while that of the male is swollen, and truneate behind. Of the marsupia of this strange form I know nothing. Oboraria, with short, solid, full shells, sometimes having a slight post-basal inflation in those of the female, and Plagiola, with triangular shells, often showing the distinction between male and female, recall to some extent Quadrula in shell ehar- acters, but have the marsupia in the hinder part of the outer gills alone. The ovisacs are distinct, and there is a sulcus below, and this No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 511 is the highest type of a branchial uterus. Lampsilis is a step farther on, with oval to elongated shells, generally highly colored, with, as a rule, a decided post-basal swelling of that of the female, without (in most cases) a strong post ridge, and the beak sculpture consists of rather numerous, delicate bars, Seed in two distinct (anterior and posterior) loops. Throughout the entire Mississippi Valley, a portion of the Atlantic drainage, in most of the streams flowing into the Gulf of Mexico, in east- ern Mexico, and Central America there is found an extensive group of Uniones for which I have used the name Proptera of Rafinesque. Nearly all the shells are more or less dorsally winged, the beak sculpture is feeble, the epidermis is dull, the teeth are often imperfect, and they have a row of dorsal scars running obliquely downward and forward. The nacre generally is some shade of purple, and though the female shell may Show a decided post inflation,it may be wanting. The ovisacs are usually fine and numerous, and are placed in the posterior ends of the outer gills. I have given this group subgeneric rank under Lamp- silis. Now,it would seem probable that North America was the field in which these remarkable developments in the character of the Union- ide had taken place, for I know of no fossil species elsewhere showing any of these higher characters. If, as I have elsewhere suggested, there is a relationship between Proptera and the Cristarias, Hyriopsis, Pilsbryoconcha, Chamberlainia, and Pseudospatha of the Old World, then I should think it likely they, or their progenitors, had migrated thence from North America some time during the early or middle ter- tiaries. It is possible that the Cristarias, Hyriopsis, and the like, or closely related but now extinct groups, may have originated in ori- ental waters, and that the Propteras, and the typical Lampsilis, may be their offspring. Truncilla marks the highest development of Naiad life, and may be taken to be the latest. Its shells are smooth and generally highly painted, the beak sculpture is fine and doubly looped, the hinge teeth are well developed. The post-basal area is very distinctly marked out and developed in the female. In most cases the shell of this part in the female is thin, of a different texture from the rest, often radially ridged, and decidedly toothed on its edge. There is usually a surpris- ing difference in the shape of the shells of male and female aside from this, so much so that one would never suppose that they belonged to the same species, unless he traced the growth back to the young shells, _which are quite alike in the different sexes. The marsupium is like a large kidney, very full, and totally different in appearance when gravid from the rest of the gill. It appears to be protected by a great flap which grows out from the mantle covering it, which is here double. The genus exhibits a great variety of form, so much so that several good subgeneric groups seem well marked out, and we must believe it has been in existence for some time. Much of the foregoing may be mere conjecture; much is undoubt- edly founded on fact. I believe that the living forms of the Unionide show a gradual development from the simplest, lowest, and earliest 512 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. types up to the highest, most recent, and most complicated, and stand as a sort of index to the progress of the family in the past. LT have not been able to study the Mutelide as carefully as I have the Unionide. All the species are foreign, and while I have seen the soft parts of a few South American forms, I have never had the opportunity to examine the anatomy of a single African species. I Lave not been able, from what knowledge I have obtained, to discover any consider- able anatomical or conchological differences between the Mutelid genera of Africa and South America which might be used to separate the family into subfamilies. - [ have treated the families of the Unionidee and Mutelidee together in. this work because they bave both been classed as Naiades. But the remarkable differences in the embryos, that of the former family being a glochidium with a bivalve shell inclosing the soft parts, and that of the latter a lasidium divided into three segments with a single shell on its middle section, and the shells of the one family having schizo- dont teeth, while those of the other have taxodont teeth, seem to show that the two great groups are not very nearly related. Instudying the Naiades I have been greatly perplexed on accountof the unsatisfactory and confused condition of much of the literature. Harlyin this century Rafinesque collected the Unionide extensively in Kentucky and published a large number of genera, minor groups, and species. It is probable that there will always be differences of opinion with regard to his work, just as there have been in the past. His figures are more like those made by children, or the caricatures drawn by aboriginal tribes, than the creations of an intelligent naturalist, and the deserip- tions are too brief in many cases to give any clear idea of the species. The work in the continuation of his monograph is even worse than that in the body of the paper, and tribes, genera, and subgenera are mingled in bewildering confusion, and all these are placed under two great genera, It is impossible in many cases to tell what his meaning is. I have care- fully gone over his so-called types in the Academy of Natural Sciences in Philadelphia, making notes and sketches, and stating the names by which they are commonly known. Four times, separated by long intervals, I have studied his original descriptions, with specimens of the same species as these so-called types, in an attempt to determine his species, each time writing down my conclusions, and I believe that quite a number of his species will have to stand. There can be no doubt whatever that many of his so-called types are not types at all, as they do not fit the descriptions by any stretch of imagination. In applying generic, subgeneric, and sectional names | have used those which have been previously applied wherever it has been possible to do so by the process of elimination, in order that no claim of priority might be urged for them. A most unfortunate dispute arose among our earlier conchologists in regard to priority of names, one in which a great deal of ill feeling was displayed. I have endeavored wherever it was possible to ascer- tain the exact date of publication of these disputed names and to credit the species to the earliest described. In some cases it has been ~ No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 513 impossible to tell which of two names appeared first, and in such cases I haveused that which seemed to be best known. Many of the species of Lamarck stand on about the same foundation as those of Rafinesque, having only a brief description and no fig- ures. Dr. Lea on at least two occasions went over the types of most of Lamarck’s species and has published his conclusions in the Obser- vations, and I am obliged to abide by his decisions, never having seen the types myself. One of the most perplexing problems has been the work done by European conchologists, and especially by the so-called new school of France. Previous to 1870, the date of issuance of Lea’s last edition of the synopsis, thousands of names had been applied to the few species of Europe. But this work was conservative and reasonable compared with that of the new school since then. I have devoted much time and study to this fauna and its literature. To me it seems that there are not more than eighteen or twenty species of Unionidie found in Europe, judging by the same standards I have applied to species elsewhere. Nearly all the authors seem to be more or less at sea as to certain forms of this area, and the reasons for this are probably their want of striking characters and their extreme variability. Unio picto- rum, tumidus, elongatulus, and platyrhynchoideus have been often taken for each other. Margaritana margaritifera has repeatedly been mis- taken for the very similar looking M. crassa, and each of these has been hopelessly confused with Unio batavus. I have endeavored to consider names applied before 1870 in my synonymy. I have made no effort to do this with those applied by authors to the forms of Europe since that time, as I do not believe that any new species of Unio, Margaritana, Anodonta, or Leguminaia have been found there in the last thirty years. The genus Colletopterwm (1881) is a doubtful one and is very likely only an mutation of the excessively variable Anodonta cygnea. In 1892 Arnould Locard, one of the great lights of the new school, stated that there were 208 species of Unios and 250 Anodontas in France alone.! Life is too short and valuable to be wasted in any attempt at deciphering such nonsense, and I have not even cumbered the pages of this work with a list of these new species. Those interested can find them in the works of Westerlund and Kobelt. In cases where the new school has worked on the fauna of Africa or _ Asia, I have done the best I could to straighten out the synonymy. I have not attempted to make any analytical key to genera and other groups, because [ do not believe that it is possible to construct a key that will be of any real service to the student. At least four-fifths of the shells of the Naiades have the beaks so eroded that it is impossible to form any idea of what their sculpture is like, and the soft parts are inaccessible to the average student and collector. These are both vital characters that must be used in classification. The general arrange- ment of the groups down to genera is shown in the following table: ‘Aun. Soc. Ag. Hist. Nat. Lyon, 1892, p. 55. Proc. N. M. vol. xxii 3d Hinge with schizodont teeth; embryo a glochidium. uv Family Unionide. PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Beak sculpture concentric; embryos in outer or all four of the gills. (Exobranchiw.) a Subfamily Unionine. a Ovisacs distinetly marked out by a sulcus. ———————— Olle SS ——>—__-_ -_- __ —_ Ovisacs not separated by a sulcus. Male and female shells alike. a ee et eee! ’ Male and female shells different. SYNOPSIS OF THE GENERA OF NAIADES. Truncilla Rafinesque. _Micromya Agassiz. Lampsilis Rafinesque. | Pseudospatha Simpson. Hyriopsis Conrad. Chamberlainia Simpson, Female shell inflated at base in¢ Cristaria Schumacher. front of posteriorridge; marsupium Lepidodesma Simpson. | (Heterogene. ) é | in hinder part of outer gills. Pilsbryoconcha Simpson. | ( Medionidus Simpson. Nephronaias Crosse and Fischer, Glebula Conrad. Obovaria Rafinesque. Plagiola Rafinesque, (Digene.) Female shell inflated behind, ; 4 Tritogonia Agassiz. above posterior ridge. (Mesogene.) ( el Cyprogenia Agassiz. Marsupium a few ovisacs in they Obliquaria Rafinesque. center of outer gills. L (Ptychogene.) Marsupium occupying the whole Ptychobranchus Simpson. outer gills in a series of folds. ; (Eschatigene. ) Marsupium occupying the outer Dromus Simpson. border of outer gills. (Diagene.) Ovisaes filling the outer gills, Strophitus Rafinesque. running crosswise. Colletopterum Bourguignat. Gabillotia Servain. Leguminaia Conrad. Lastena Rafinesque. Solenaia Conrad. Gonidea Conrad. Anodontoides Simpson. Marsupium filling the entire | ?egias Simpson. outer gills and forming smooth | 4”cidens Simpson. pads. | Symphynota Lea. A | Alasmidonta Say. Hemilastena Agassiz. Margaritana Schumacher. Unio Retzius. | Pleurobema Rafinesque. | Anodonta Bruguiere. (Homogene. ) | (LOG aes) Quadrula Rafinesque. Marsupium filling al) four gills, } Schistodesma Simpson. forming smooth pads; beak cavi- | Gibbosula Simpson. (ties deep. Cuneopsis Simpson. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 515 Nodularia Conrad. Harmandia Rochebrune. Grandidieria Bourguignat. Physunio Simpson. | Dalliella Simpson. | Pseudodon Gould. (Rosanorhamphus. ) Parreysia Conrad. Ptychorhynchus Simpson. Virgus Simpson. Ctenodesma Simpson. Rectidens Simpson. Lamellidens Simpson. Trapezoideus Simpson. Arconaia Conrad. Pseudavicula Simpson. | Arcidopsis Simpson, — ; embryo a Beak sculpture generally zigzag-¢ | radial; epidermis often bright. family Hyrian. Beak sculpture radial; male and female shells alike; marsupium filling the inner gills. (Zndobranchiw.) ae glochidiwm. nol { Tetraplodon Spix. | Castalina von Thering. | Castaliella Simpson. Beak sculpture radial, often curved; } Callonaia Simpson. shell dull colored. Hyria Lamarck. Prisodon Schumacher. Diplodon Spix. (Lamphorhamphus. ) Family Unionide. Hinge with schizodont teeth ————— Sub —— { Spatha Lea. Mutela Scopoli. 1 Chelidonopsis Ancey. Brazzea Bourguignat. Pleiodon Conrad. Monocondylwa @Orbigny. Theringella Pilsbry. | Fossula Lea. Glabaris Gray. Leila Gray. | Mycetopoda @Orbigny. Hinge teeth taxodont; male and female shells / alike; embryo a rages. Penny Mutelide. In the preparation of this work I have received uniform courtesy and kindness from students and collectors generally. I am under especial obligations to Mr. Edgar A. Smith, of the British Museum, for exam- ining and reporting on the original manuscript of Solander, and to Mr. H. A. Pilsbry, of the Academy of Natural Sciences of Philadelphia; Mr. A. G. Wetherby, of Magnetic City, North Carolina; Dr. H. von Ihering, Museo Paulista, San Paulo, Brazil; and Mr. H. Suter, Christ Church, New Zealand, for repeated assistance and advice. Mr. L. E. Daniels, of La Porte, Indiana; Mrs. George Andrews, of Knoxville, Tennessee; Hon. J. D. Mitchell, of Victoria, Texas; Mr. Berlin H. Wright, of Penn Yan, New York; Mr. Bryant Walker, of Detroit, Michigan; Dr. W.S. Strode, of Lewistown, Illinois; Mr. H. M. Kelly, of Mount Vernon, Iowa; Mr. William Moss, of Ashton-under-Lyne, Eng- land; and many others have contributed valuable material for study. SYSTEMATIC ARRANGEMENT OF THE NAIADES, Family UNIONID 2. Shell nacreous, with a thick epidermis; beaks usually sculptured, often showing the remains of the nuclear shell; ligament opisthodetic; hinge with or without teeth, though with vestiges of them in every genus; when present schizodont and arranged as pseudocardinals and laterals; palleal line usually simple; prismatic border ordinarily narrow. Animal with labial palpi almost always wider than long; anal opening usually separated from the superanal; embryo a glochidium, the soft parts being inclosed in a bivalve shell, and borne in the inner or outer or all four leaves of the branchie. Subfamily UNIONIN A, Swainson, 184.0. (Hixobranchiz.) Shell having essentially concentric beak sculpture. Animal with labial palpi somewhat drawn out, projecting posteriorly ; embryos borne in the outer or in all four gills. HETERO GE WN A=: Male and female shells different, the latter inflated in the post-basal region; beak sculpture usually doubly looped; embryos contained in ovisacs separated by a sulcus and occupying the hinder part of the outer gills. Genus TRUNCILLA Rafinesque, 1819. (Type, Truncilla triqueter Ratinesque. ) Truncilla RAFINESQUE, J. de Phys., Chimie, Hist. Nat., LX XXVIII, 1819, p. 427. Shell rounded or oval, solid, inflated, generally smooth and rayed, with delicate beak sculpture which has a tendency to be doubly looped, that of the female having a very decided inflation in the post-basal region, which is thinner than the rest of the shell, of different texture, often toothed, and usually radiately sculptured; laterals double in each valve, the inner in the right valve smaller. Animal generally having the inner gills united to the abdominal sac; female with a heavy flap of the mantle which fills the post-basal swelling of the shell, and which has an inner ridge inside at some distance above the edge; marsupium very distinct, occupying the swollen part of the shell. 516 : ) No. 1205. SYNOPSIS OF THE NATADES—SIMPSON, Duleg Subgenus TRUNCILLA Rafinesque, 1819. Shell covered with broken rays, somewhat triangular, and without a wide, radiate, posterior furrow. (Group of Truncilla triquetra.) Shell greatly inflated, sharply truncate posteriorly; inflation of the female shell at extreme post-basal point. 't TRUNCILLA TRIQUETRA Rafinesque. 2* Truncilla triqueter RAFINESQUE, Ann. Gen. Sci. Phys. Brux., XIII, 1820, p. 300, pl. LXXXI, figs. 1-4.—*CuHENU, Bib. Conch., 1st ser., III, 1845, p. 15, pl. 11, tig. 1.—*Aq@assiz, Arch. fiir. Naturg., I, 1852, p. 44. Unio triqueter SHoRT and Earon, Transylvania J1.,.1831, p. 79.—*Say, Am. Conch., VI, 1834.—* ConraD, New F.W. Shells, 1834, p.72.—* Fprussac, Guer. Mag., 1835, p. 27.—*Say, Pr. Ac. N. Sci. Phila., VI, 1853, p. 259.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 496.—* PaTEL, Conch. Sam., III, 1890, p. 170. * Unio triangularis BARNES, Am. Jl. Sci., VI, 1823, p. 272, pl. xu, fig. 17.—* H1L- DRETH, Am. Jl. Sci., X, 1828, p. 287, fig. —*Say, Am. Conch., No. 1, 1830, pl. Iv.—SHORT and EATON, Transylvania J1., 1831, p. 78.—* DESHAYES, An. sans Vert., 2d ed., VI, 1835, p.554; 3d ed., II, 1839, p. 674.—* REEVE, Conch. Syst., I, 1841, p. 118, pl. Lx xxx, fig. 9.—*HANLEY, Test. Moll., 1842, p. 183; *Biv. Shells, 1845, p. 183.—* CarLow and REEVE, Conch. Nom., 1845, p. 64.—* CuENU, Bib. Conch., Ist ser., III, 1845, p. 10, pl. 1, figs. 4, 4b; *Man., IT, 1859, p. 137, fig. 662.—* SOWERBY, Conch. Icon., XVI, 1868, pl. Lxvu, fig. 340.—* CaLkIns, Pr. Ottawa Acad.. Nat. Sci., 1874, p. 45. *Mya triangularis Haton, Zool. Text Book, 1826, p. 221. *Margarita (Unio) triangularis LEA, Syn., 1836, p. 18; 1838, p. 16. *Margaron (Unio) triangularis LEA, Syn., 1852, p. 23; 1870, p. 36. *Unio cuneatus SwWAINSON, Phil. Mag., 1823, p. 112. *Unioformosus LEA, Trans. Am. Phil. Soc., IV, 1834, p. 111, pl. xvi, fig. 41; *Obs. I, 1834, p. 121, pl. xv1, fig. 41.—*CHENU, II]. Conch., 1858, pl. v111, figs. 12, 12a, - 12b; *Man., 1859, II, p. 188, fig. 664. Ohio River drainage; western New York to southern Michigan; Iowa; eastern Nebraska to Indian Territory. (Group of Truncilla brevidens.) Shell somewhat quadrate, not sharply truncate behind; post-basal swelling of female in front of post-basal point and rounded below. } TRUNCILLA BREVIDENS Lea. Unio brevidens Lua, Trans. Am. Phil. Soc., IV, 1834, p. 75, pl. 1v, fig. 6; *Obs. I, 1834, p. 85, pl. v1, fig.6.—* HANLEY, Test. Moll., 1842, p. 198; * Biv. Shells, 1843, p. 198, pl. xx, fig. 41.—* CatTLow and REEVE, Conch. Nom., 1845, p. 56.— *“H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 492.—* CuEnvw. II11., Conch., 1858, pl. vill, figs, 6, 6a, 6b.—* PasTEL, Conch. Sam., III, 1890, p. 146. *Margarita (Unio) brevidens LEA, Syn., 1836, p. 29; 1838, p. 21. *Margaron (Unio) brevidens LEA, Syn., 1852, p. 32; 1870, p. 50. ‘A ¢ placed before a species indicates that the type, or what are believed to be authentic specimens have been examined by the writer. 2An * in front of a reference indicates that it has been verified. 518 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. *Unio interruptus CONRAD, New F. W. Shells, 1834, p.69.—* Say, Am. Conch., VI, 1834.—* ConrabD, Monog., X, 1838, p. 88, pl. xtvur; *Pr. Ac. N. Sei., Phila., VI, 1853, p. 250.—* Kuster, Conch. Cab. Unio, 1861, p. 182, pl. tvn, fig.3; pl. Lx, fig. 2.—* REEVE, Conch. Icon., XVI, 1864, pl. x1v, fig. 56. *Truncilla interrupta AGAssiZ, Arch. fiir Naturg., I, 1852, p. 44. Tennessee drainage. +TRUNCILLA PENITA Conrad. “Unio penitus CONRAD, New F.W. Shells, 1834, pp. 33, 70, pl. v, fig. 1.—* FeRussac, Guer. Mag., 1835, p. 29.—* M6LLER, Syn. Noy. Gen., 1836, p. 203.—* HANLEY, Test. Moll., 1842, p. 183; * Biv. Shells, 1843, p. 183.—*CaTLow and REEVE, Conch. Nom., 1845, p. 62.—* CHENU, Bib. Conch., 1st ser., IIT, 1845, p. 18, p]. 11, fig. 9.—* ConraD, Pr. Ac. N. Sci., Phila., VI, 1853, p. 254.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 495.—* RrEEve, Conch. Icon., XVI, 1864, pl. xrv, fig. 55.—* PZ TEL, Conch. Sam., III, 1890, p. 162. *Margarita (Unio) penitus LEA, Syn., 1836, p. 19; 1838, p. 16. *Margaron ( Unio) penitus LEA, Syn., 1852, p. 24; 1870, p. 36. “Unio compactus LEA, Proc.Ac. N. Sei. Phila., II, 1859, p. 154; *J1. Ac. N. Sci. Phila., IV, 1859, p.218, pl. xx vin, fig. 98; *Obs. VII, 1859, p. 36, pl. xx vu, fig. 98. *“Margaron (Unio) compactus LEA, Syn., 1870, p. 36. Alabama and Tombigbee river drainage. + TRUNCILLA MODICELLA Lea. *Unio modicellus Lea, Pr. Ac. Phila., III, 1859, p. 171; *J1. Ac. N. Sei. Phila., IV, 1860, p. 347, pl. Lvu, fig.172; *Obs., VIII, 1860, p. 29, pl. Lvu, fig. 172.—* B. H. Wricut, Check List, 1888. *Margaron (Unio) modicellus' Lea, Syn., 1870, p. 41. Connasaugua and Chattanooga rivers, northwest Georgia. The following species? are unfigured and indeterminate: Truncilla (Unio) perplecus Rafinesque. Truncilla granulatus Rafinesque. Unio (Truncilla) metaplata Rafinesque. tTRUNCILLA LENIOR Lea. *Unio lenis Lua, Pr. Am. Phil. Soc., I, 1840, p. 286.? *Unio lenior Lea., Tr. Am. Phil. Soc., VIL, 18438, p. 204, pl. x11, fig. 18; *Obs., II, 1842, p. 42, pl. xu, fig. 18.—*Conrab, Pr. Acad. N. Sci. Phila., VI, 1853, p. 251.— *CHENU, Ill. Conch., 1858, pl. xxvui, figs. 4, 4a, 4b.—*H. and A. ADAMS, Gen. Rec. Moil., II, 1857, p. 492.—*REEVE, Conch. Icon., XVI, 1864, pl. xvi, fig. 75.—*P&TEL, Conch. Sam., ILI, 1890, p. 157. *Margaron (Unio) lenior La, Syn., 1852, p. 39; 1870, p. 62. Stone River, Tennessee; near Woodville, Alabama. ‘Four specimens of this species are in the U. 8. National Museum collection, from the Connasauga River, Georgia, three of which are males, with a form something like that of 7. penita; the fourth is a young female, which distinctly shows a vadiately ridged post-basal swelling. ?These are in continuation of Monography, 1831, p. 4. 3Lea changed his name lenis to lenior, probably because Conrad had previously used the former for a species of Unio, which is no doubt a young ventricosus. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON, 519 +TRUNCILLA METASTRIATA Conrad. * Unio metastriatus CONRAD, Mon., XII, 1840, p. 104, pl. Lvu, fig. 2. Black Warrior River and Woodville, Alabama. (Group of Trunecilla arceformis.) Shell greatly inflated, with a sharp posterior ridge, and two lesser ridges above it; inflation of the female flattened on its base. t+TRUNCILLA ARCAEFORMIS Lea. *Unio arceformis LEA, ‘Tr. Am. Phil. Soc., IV, 1851, p. 116, pl. xvun, fig. 44; *Obs., I, 1834, p. 126, pl. xv, fig. 44.—* ANTON, Verz. der Conch., 1839, p. 14.:— DEsHAYES, Tr. Element, Conch., 1839, p. 18, pl. xxIx, fig. 6.—*HANLEY, Test. Moll., 1842, p. 182; * Biv. Shells, 1843, p. 182, pl. xx11, fig. 40.—*CatTLow and REEVE, Conch. Nom., 1845, p.55.—*DESHAYES, Traité Element., II, 1853, pl. XXIV, fig 6.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 495.—*CuENuv, Ill. Coneh., 1858, pl. x11, figs. 3, 3a, 3b.—*REEVE, Conch. Jcon., XVI, 1864, pl. XIV, fig. 57. *Margarita (Unio) arceformis LBA, Syn., 1836, p. 18; 1838, p. 16. Margaron (Unio) arceformis Lea, Syn., 1852, p. 23; 1870, p. 36. *Truncilla arceformis AGassiz, Arch. fiir Naturg, I, 1852, p. 44. Unio nexus Say, Transylvania Jl., 1V, 1831, p. 527; *Say, Am. Conch., Pt. 6, 1834, pl. 11.2—*ConraD, New F. W. Shells, 1834, p. 70.—*FERussAc, Guer. Mag., 1835, p. 28.—*ConraD, Monog., VIII, 1837, p. 68, pl. xxx vill, fig. 1.—*KUSTER, Conch. Cab. Unio, 1854, p. 69, pl. xvu, fig. 2.—*ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 252.—*Pare, Conch. Sam., III, 1890, p. 60. Tennessee and Cumberland river systems. Subgenus SCALENARIA (Rafinesque, 1820) Agassiz. (Type, Unio sulcatus Lea. ) Male shell having a wide, radiating, shallow depression in front of the posterior ridge; that of the female having a small, rounded, well- defined, radial post-basal swelling. Animal with marsupium occupy- ing the greater part of the outer branchie; mantle enlarged below; branchial opening, with few papille. (Group of Truncilla sulcata.) Shell elliptical, beaks high and well forward, male shell not radiately striated posteriorly. 1This may be 7. triquetra. 2 According to Binney, Unio nexus was first published in December, 1831, (Bib. N. Am. Conch., I, p. 266), and Scudder states that the fourth volume of the Transac- tions, containing Lea’s description of Unis arceformis, was published at the latter end of 1831, and acknowledged by correspondents as received that year (Bib. of pub- lications of Lea, 1885, p.3). As I am not able to say which has precedence, I prefer retaining the well-known name of Lea rather than that of Say, which is less known. 520 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. tTRUNCILLA SULCATA Lea. * Unio sulcatus Lea, Tr. Am. Phil. Soc., III, 1830, p, 430, pl. vii, fig. 2.—*Say, Am. Conch., No. 1, 1830, pl. v.—SuHorr and Eavron, Transylvania J1., 1831, p. 75.—*LEA Obs., I, 1834, p. 44, pl. vu, fig. 12.—*Hanurey, Test. Moll., 1842, p. 188; *Biv. Shells, 1843, p. 188.—*CHENU, Bib. Conch., Ist ser., III, 1845, p. 11, pl.1, figs. 5, 5a.—*CaTLow and REEVE, Conch. Nom., 1845, p.64.—*CHENU, Ill. Conch., 1858, pl. x11, figs. 3, 3a, 3).—*H. and A. ApDams, Gen. Rec. Moll., II, 1857, p. "196. —*REEVE, Conch. Icon., XVI, 1864, pl. x1v, fig. 60. Beam, Gonek: Sam., ILi, 1890, p. 169. * Margarita (Unio) sulcatus LHA, Syn., 1836, p. 22; 1838, p. 18. * Margaron (Unio) sulcatus Lua, Syn., 1852, p. 26; 1870, p. 40. *Unio sulcata DESHAYES, An. sans Vert, 2d ed., VI, 1835, p. 548; 3d ed., II, 1839, p. 672. : Unio ridibundus Say, New Harm. Diss., II, 1829, p.308; *Am. Conch., I, 1830, pl. v.—SHortT and Eaton, Transylvania Jl., 1851, p. 75.—*Conrap, New F. W. Shells, 1834, p. 71.—*CHENU, Bib. Conch., Ist ser., III, 1845, p. 11, pl.1, fig. 6.—*KusTER, Conch. Cab. Unio, 1862, p. 276, pl. xctl, fig. 2.—* REEVE, Conch. Icon., XVI, 1864, pl xv, fig. 63. *Unio obliquatus Say, Am. Conch., VI, 1834.—*Conrab, New F. W. Shells, 1834, p. 70.—*KustTER, Conch. Cab., 1862, p. 274, pl. xem, fig. 3.—*AGassiz, Arch. fiir Naturg., I, 1852, p. 43.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 253. *Unio gibbosus var. perobliquus CONRAD, Monog., VI, 1836, p. 50, pl. xxvil, fig. 2. Unio perobliquus CONRAD, Cover of Monog., VIII, 1837. *Unio pectitus CoNnRaD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 255; Jl. Ac. N. Sei. Phila., 1854, p. 297, pl. xxvu1, fig. 4. TRUNCILLA SULCATA var. DELICATA Simpson.! Ohio River drainage; the variety in the Detroit River and southern - Michigan. (Group of Truncilla haysiana.) Shell shining, round-oval; posterior part of both male and female distinctly radially sculptured. +TRUNCILLA HAYSIANA Lea. *Unio haysianus Lua, Tr. Am. Phil. Soc., V, 1833, p. 35, pl. m1, fig. 7; *Obs., I, 1834, p. 147, pl. 111, fig. 7.—*HANLEY Test. Moll., 1842, p. 188; *Biv. Shells, 1843, p. 188.—*CaTLOW and REEVE, Concent None ‘1845, p.59.—*ConrabD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 250.—*KusTER, Conch. Cab. Unio, 1856, p. 209, pl. Lx1x, fig. 4.—*H.and A. ADAMS, Gen. Rec. Moli., II, 1857, p. 495. —*REEVE, Conch. Icon., XVI, 1864, pl. xv, fig. 62.—*P#TEL, Conch. Sam., ITI, 1890, p. 154. *Margarita (Unio) haysianus Lra, Syn. 1836, p. 22; 1838, p. 18. *Margaron (Unio) haysianus Lua, Syn. 1852, p. 26; 1870, p. 41. *“Scalenaria haysiana AGassiz, Arch. fiir Naturg. I, 1852, p. 48. * Unio sowerbyanus LEA, Tr. Am. Phil. Soc., V, 1839, p. 68, pl. x, fig. 28;2 *Obs. I, 1834, p. 180, pl. x, fig. 28.—* FERussac, Guer. Mag., 1835, p..29.—* ConkaD, 'Mr. Bryant Walker has sent me specimens of a form which I refer to this species that are smaller and in every way more delicate. I propose the above varietal name for it. *Male of T. haysiana. Unio haysianus and U. sowerbyanus were published in the same paper, the former having precedence. No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 521 Monog., VIII, 1837, p. 66, pl. xxxvu1, fig. 1.—* HANEY, Test. Moll., 1842, p. 185; *Biv. Shells, 1843, p. 185.—* Cartow and REEVE, Conch. Nom., 1845, p. 64.—* Kuster, Conch. Cab. Unio, 1852, p.62, pl. x1v, fig. 3.—* Conran, Pr, Ac. N. Sci. Phila., VI, 1853, p. 257.—* H. and A. ADaMs, Gen. Rec. Moll., II, _ 1857, p.496.—* REEVE, Conch. Icon., XVI, 1864, pl. xIv, fig. 58.—* PaTEL, Conch. Sam., IIT, 1890, p. 168. *Margarita (Unio) sowerbyanus LEA, Syn. 1836, p. 20; 1838, p.17. *Margaron (Unio) sowerbyanus Lra, Syn. 1852, p. 25; 1870, p. 38. Tennessee and Cumberland river systems. +TRUNCILLA OTHCALOOGENSIS Lea. “Unio othcaloogensis Lua, Proc. Acad. N. Sci. Phila., IX, 1857, p. 32; Jl. Ac. N. Sci. Phila., LV, 1858, p. 74, pl. xiv, fig. 54; Obs. VI, 1858, p. 75, pl. xiv, fig. 54. *Margaron (Unio) othealoogensis LEA, Syn. 1870, p. 38. Othcalooga Creek, Gordon County, Georgia. Subgenus DYSNOMIA Agassiz. 1852. (Type, Unio foliatus Hildreth.) Shell of the male with a posterior and central radiating ridge, with a wide, flattened space between; that of the female with a greatly pro- duced inflation, which is but little behind the center of the base, it being a continuation of the central ridge. Animal with mantle beauti- fully maculate on its border; female animal unknown. +t TRUNCILLA FOLIATA Hildreth. *Unio foliatus HILDRETH, Am. Jl. Sci., XIV, 1828, p. 284, fig. 16.—* Conrap, New IF. W. Shells, 1834, p. 69.—* Frrussac, Guer. Mag., 1835, p. 27.—* HANLEY, Test. Moll., 1842, p. 176; * Biv. Shells, 1843, p. 176.—* CatLow and REEVE, Conch. Nom., 1845, p. 59.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 497.—* CHENU, Man., 1859, II, p. 143, fig. 705.—* HARPER, L. and F. W. Shells of Cinti., p. 4. *Margarita (Unio) foliatus Lea, Syn. 1836, p. 13; 1838, p. 14. *Margaron (Unio) foliatus Lea, Syn. 1852, p. 20; 1870, p. 30. * Unio flecuosus CONRAD, Monog. I, 1835, p. 8, pl. rv, fig. 2.—* KusTER, Conch. Cab. Unio, 1852, pp. 46, 211, pl. 1x, fig. 2; Lxx, fig. 1.—*Conrap, Pr. Ac. N. Sei. Phila., VI, 1853, p. 249.—* REEVE, Conch. Icon., XVI, 1864, pl. v1, fig. 22; Xa ML On Oo. *Dysnomia flecuosa AGASSIZ, Arch. fiir Naturg. I, 1852, p. 43. Ohio River drainage. +TRUNCILLA STEWARDSONI Lea. “Unio stewardsoni Lra, Tr. Am. Phil. Soc., X, 1852, p. 278, pl. xx111, fig. 36; * Obs. V, 1852, p. 34, pl. xxim, fig. 36.—*Conrap, Pr. Acad. Nat. Sci. Phila., VI, 1853, p. 258.—* H. and A. ADams, Gen. Rec. Moll., II, 1857, p. 498.—* REEVE, Conch. Icon., XVI, 1864, pl. xv, fig. 66.—* Pa&TEL, Conch. Sam., III, 1890, p. 168. ; *Margaron (Unio) stewardsoni Lea, Syn. 1852, p. 20; 1870, p. 38. Tennessee River. 'T have seen only the type of this species, apparently a young female, which is a reddish buff-colored, shining shell, somewhat more elongated than 7. haysiana, but which probably groups with it. 522 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL. XX. Subgenus PILEA Simpson, 1900. (Type, Unio personatus Say.) Male shell with a wide, shallow, radiating depression in front of the posterior ridge, that of the female with a rounded, foliaceous swelling at the posterior base. Animal with post basal flap of mantle of female very heavy; ovisacs not extending to the top of the marsupium. (Group of Truncilla personata.) Shell inflated, rather solid, nearly as high as long; female not having a central depression, post basal swelling smail. + TRUNCILLA PERSONATA Say. Unio personatus Say, New Harm. Diss. IT, No. 20, 1829, p. 309.—* Ferussac, Guer. Mag., 1835, p. 28.—* CONRAD, Monee V, 1836, p. 47, pl. xx1v.—* Han- LEY, Test. iron 1842, p. 202; * Biv. Shells, 1843, p. 262.—* CaTLow and REEVE, Conch. Nom., 1845, p. 62.— * KusTER, Conch. Cab. Unio, 1852, p. 48, pl. x, fig. 1.—* Conran, Pr. Ac. N. Sci. Phila., VI, 1853, p. 254.—* H. and A. ApAms, Gen. Rec. Moll., II, 1857, p. 492.—* REEVk, Conch. Icon., XVI, 1864, pl. xv, fig. 64.—* P@TeL, Conch. Sam., III, 1890, p. 116. * Margarita (Unio) personatus Lra, Syn. 1836, p. 33; 1838, p. 23. * Margaron (Unio) personatus LEA, Syn. 1852, p. 85; 1870, p. 38. *Scalenaria personata AGASSIZ, feon fiir Naturg. I, 1852, p. 43. *Unio pileus Lea, Trans. Am. Phil. Soc., IV, 1834, p. 119, pl. xvii, fig. 47.—* Con- RAD, New F. W. Shells, 1834, p. 71.—* Lea, Obs. I, 1834, p. 129, pl. x vu, fig. 47.—* Frrussac,- Guer. Mag., 1835, p. 28,—* HANLEY, Test. Moll., 1842, p. 185; * Biv. Shells, 1843, p. 185.—*CatTLow and REEVE, Conch. Nom., 1845, p. 62.—* CHENU, Ill. Conch., 1858, pl. xv, figs. 2, 2a, 2b.— HL, and A. oat Gen. Ree. Moll., II, 1857, p. 495.—* REEVE, Conch. Icon., XVI, 1864, pl. xv, fig. 64.— * PaTEL, Conch. Sam., III, 1890, p. 163. *Margarita (Unio) pileus Lea, Syn. 1836, p. 20; 1838, p. 17. *Margaron (Unio) pileus Lua, Syn. 1852, p. 24. *Unio capillaris Lea, Tran, Am. Phil. Soce., V, 1834, p. 29, pl. uy, fig. 2; * Obs. I, 1834, p. 141, pl. 11, fig. 2.—* FERUSSAC, Gnen. Mag., 1835, p. 29. Ohio River drainage. Fare. (Group of Truncilla perpiexa.) Shell of the male with median and posterior radiating ridges, both of which are usually somewhat nodose; postbasal expansion of the female rounded, large, thin, placed far back. t TRUNCILLA PERPLEXA Lea.! *Unio perplexcus Lea, Trans. Am. Phil. Soc., IV, 1831, p. 112, pl. xv, fig. 42; * Obs. T, 1834, p. 122, pl. xvi, fig. 42.—* HANLrEY, Test. Moll., 1842, p. 181; * Biv. Shells, 1843, p. 181, pl. x x11, fig. 39.—* CaTLow and REEVE, Conch. Nom., 1845, p. 62.—*H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 496.—* CHENU, III. Conch., 1858, pl. XVIII, figs. 5, 5a, 5d. * Margarita (Unio) perplexus LEA, Syn. 1836, p.17; 18388, p. 16. 1Lea’s species was published, according to Scudder (Bibliography of Isaac Lea, p. 3), in the latter part of 1831. Rafinesque published a species, “Truncilla, Unio perplexus,” in the Continuation of a Monograph in October, 1831, which I can not identify. I do not know which name appeared first, but I think it best to retain the well-known and properly described name of Dr. Lea. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 523 * Margaron (Unio) Pas LEa, aon, 1852 2, p. 1.23: 1870, p. BL, * Unio gibbosus FERUSSAC, Guer. ae 1835, p. 27.—ConraD, Monog. VI, 1836, p. 50, pl. xxvui, fig.1.—REEVE, Conch. Icon., XVI, 1864, pl. x1, fig. 41, 41a, 41d. *Dysnomia gibbosa AGassiz, Arch. fiir Nat., I, 1852, p. 43. *Unio gibbosus, Raf. v. perplecus P&TEL, Conch. Sam., III, 1890, p. 153. *Unio torulosus CONRAD, New F. W. Shells, 1834, p. 72; * Proc. Acad. N. Sci. Phila., VI, 1853, p. 259. - *Unio obliquus Porimz and MIcHauD, Gall. Moll., 1844, p. 153, pl. Lv, figs. 3, 4. +TRUNCILLA PERPLEXA var. RANGIANA Lea. *Unio rangianus Lea, Trans. Am. Phil. Soc., VI, 1839, p. 95, pl. xvitt, fig. 563} * Obs., II, 1838, p. 95, pl. XVI, fig. 56.—* TROSCHEL, Arch. fiir Naturg., V, 1839, p. 237.—* HANLEY, Test. Moll., 1842, p. 187; ~ Biv. Shells, 1843, p. 187, pl. xx1, fig. 48.—* CaTLow and REEVE, Conch. Nom., 1845, p. 63.—* Conrap, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 256.—* H. and A. Apams, Gen. Ree. Moll., JI, 1857, -p. 495.—* CHENU., Ill. Conch., 1858, pl. XXIV, figs. 5, 54, 5b.—* KuUSTER, Conch. Cab. Unio, 1861, p. 257, p]. LXxxxvui, fig. 1; LXXXIX, fig. 1.—* REEVE, Conch. Teon., XVI, 1864, pl. xiv, fig. 54.—* P&TeEL, Conon: Sam., III, 1890, p. 164. * Margar ita (Unio) rangianus LEA, Syn., 1838, p. 18. * Margaron (Unio) rangianus LEA, Syn., 1852, p. 26; 1870, p. 40. * Unio gubernaculum REEVE, Goueln Teon., XVI, 1865, pl. xxvin, fig. 146.—P TEL, Conch. Sam., III, 1890, p. 154. +TRUNCILLA PERPLEXA var. CINCINNATIENSIS Lea. *Unio cincinnatiensis LEA, Proc. Am. Phil. Soc., I, 1840, p. 285; *Tr. Am. Phil. Soc., VIII, 1842, p. 194, pl. vir, fig. 4; *Obs., IIT, 1842, p. 32, pl. vim, fig. 4.— *CONRAD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 246.—* H. and A. Apams, Gen. Rec. Moll., IJ, 1857, p. 497.—* CHENU., Il].Conch., 1858, pl. xxx, figs. 3, 3a, 3b.— * PATEL Gana Sam., III, 1890, p. 148. * Margaron ( ™nio) cincinnatiensis LEA, Syn., 1852, p. 22; 1870, p. 33. *Unio phillipsii REEVE, Conch. Icon., XVI, 1864, pl. rv, fig. 15. Ohio River drainage; southern Michigan? The variety rangianus to south Michigan. t+TRUNCILLA SAMPSONII Lea. *Unio sampsoniti Lea, Pr. Ac. N. Sci. Phila., VI, 1861, p. 392; *Jl. Ac. N. Sci. Phila., V, 1862, p. 192, pl. xxv, fig. 261; *Obs., IX, 1863, p. 14, pl. xxv, fig. 261; Syn., 1870, p. 40. Wabash River; Tennessee? +t TRUNCILLA PROPINQUA Lea. *Onio propinquus Lr, Pr. Ac. N. Sci. Phila., I, 1857, p. 83; *Jl. Ac. N. Sci. Phila., V, 1862, p. 63, pl. v, fig. 212; *~Obs., VIII, 1862, p. 67, pl. v, fig. 212.—* Sow- ERBY, Conch. Icon., XVI, 1868, pl. LXXIXx, fig. 417.—* P#1TEL, Conch. Sam., III, 1890, p. 164. *Margaron ( Unio.) propinquus LEA, Syn., 1870, p. 54. Tennessee and Cumberland river drainage. 1Dr. Lea claims that the animal of this form is lighter colored than that of per- plexus, and quotes Mr. Clark, of Cincinnati, who states that this is known there as the White Mouth. The shells seem to absolutely biend together, and I have observed a wide range of color in the animals of a number of species of the genus. 524 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. tTRUNCILLA BIEMARGINATA Lea. * Unio biemarginatus LEA, Pr. Ac. N. Sci. Phila., I, 1857, p.83; *Jl. Ac. N. Sci. Phila., VI, 1866, p. 47, pl. xvi, fig. 45; *Obs., XI, 1867, p.51, pl. xvi, fig. 45. *Margaron (Unio) biemarginatus Lea, Syn., 1870, p. 38. Tennessee River drainage. + TRUNCILLA CAPSA2FORMIS Lea. * Unio capseformis Lra, Tr. Am. Phil. Soc., VI, 1834, p.31, pl. 11, fig. 4; *Obs., I, p. 143, pl. 1, fig. 4.—* ConraD, Monog., VIII, 1837, p. 72, pl. XL, fig. 2.—* FrRus- Sac, Guer. Mag., 1839, p. 29.—* Haney, Test. Moll., 1842, p.191, *Biv. Shells, 1843, p. 19, pl. XxJ, fig. 5.—* CarLow and REEVE, Conch. Nom., 1845, p.57.— *ICusTER, Conch. Cab. Unio, 1852, p. 42, pl. vi, fig. 5.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 246.—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 493.—* REEVE, Conch. Icon., XVI, 1864, pl. xvu, figs. 79, 79a, 79).— *PmTEL, Conch. Sam., III, 190, p. 147. *Margarita (Unio) capseformis LEA, Syn., 1836, p. 24; 1838, p. 19. *Margaron (Unio) capseformis Lea, Syn., 1852, p. 27; 1870, p. 42. Tennessee River drainage. + TRUNCILLA FLORENTINA Lea. * Unio florentinus Lwa, Pr. Ac. N. Sci. Phila., VII, 1857, p.83; *J1l. Ac. N. Sei. Phila., V, 1862, p. 64, pl. v, fig. 213; *Obs., VIII, 1862, p. 68, pl. v, fig. 213.—* B. H. WRIGHT, Check List, 1888. * Margaron (Unio) florentinus LEA, Syn., 1870, p. 42. * Unio turgidulus La, Pr. Ac. N. Sci. Phila., IL, 1858, p.40; *Jl. Ac. N. Sci. Phila., V, 1862, p. 62, pl. v, fig. 211; *Obs., VIII, 1862, p. 66, pl. v, fig. 211.—* RERVE, Conch. Icon., XVI, 1864, pl. xvu, fig. 80.—* PasrEex, Conch. Sam., III, 1890, p. 170. * Margaron (Unio) turgidulus Lea, Syn., 1870, p. 42. * Unio nua KUSTER, Conch. Cab. Unio, 1861, p. 218, pl. Lx xi, fig. 2. * Unio sacculus REEVE, Conch. Icon., XVI, 1864, pl. xv, fig. 67.—* ANTHONY, Am. Je Conch. 1) 1865; pp. ToT pla xan, tio. 3" * Unio saccatus KUSTER, Conch. Cab., 1861, p. 263, pl. LXXxIX, fig. 2.—* P&HTEL, Conch. Sai., III, 1890, p. 166. Tennessee River drainage; Cumberland River. + TRUNCILLA DEVIATA Reeve. * Unio deviatus' REEVE, Conch. Icon., XVI, 1864, pl. xv, fig. 61.—*ANTHONY, Am. Jl. Conch., 1, 1865, p. 156, pl. x1, fig. 2.—* B. H. WrieHr, Check List, 1888,— P#TEL, Conch. Sam., III, 1890, p. 150. * Margaron (Unio) deviatus LEA, Syn., 1870, p. 42. Cumberland and Tennessee rivers. Genus MICROMYA (Agassiz, 1852) Simpson. (Type, Unio fabalis Lea.) Micromya AGassiz, Arch. fiir Nat., 1852, p. 57. Shell triangular oval, solid, dark, feebly rayed with undulating lines; beak sculpture almost wanting, consisting of a few feeble, doubly-looped ‘Reeve credits this name to Anthony’s manuscript in Museum Cuming. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 525 ridges; hinge teeth heavy, laterals club-shaped and truncated poste- riorly; post-basal swelling of the female distinct and often rather abrupt, sometimes somewhat irregularly radially ridged, the shell of this part being rather thin. Animal with mantle fringed below, maculate on the border, which is greatly thickened at the post-basal part in the female and developed into a flap, with a distinct, toothed ridge inside; marsupium occupying the posterior part of the outer branchiz in numerous distinctly marked ovisacs; inner gills free from abdominal sac in part. (Group of Micromya fabalis.) Shell small, with faint undulate rays, inflated area of female scarcely radiately striated. +t MICROMYA FABALIS Lea. * Unio fabalis,! La, Tr. Am. Phil. Soc., IV, 1831, p. 86, pl. x, fig.6; *Obs., I, 1834, p. 96, pl. x, fig. 16.—* FeRussac, Guer. Mag., 1835, p. 27.—* HANLEY, Test. Moll., 1842, p. 196; * Biv. Shells, 1843, p. 196.—* CaTLowand REEVE, Conch. Nom., 1845, p. 59; *H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 494.—* CHENu, Ill. Conch., 1858, pl. v1, figs. 1, la, 1b.—* SoweERBy, Conch. Icon., XVI, 1866, Jol Soro yay ner, WEI. * Margarita (Unio) fabalis LEA, Syn., 1886, p. 28; 1858, p. 20. * Margaron (Unio) fabalis Lma, Syn., 1852, p.31; 1870, p. 49. Unio capillus Say, Transylvania Journ., IV, 1831, p. 528. ZA *Unio lapillus Say, Am. Conch., V, 1832, pl. xr; VI, 1834, No. 49.—*Conrap, New, EF. W. Shells, 1834, p. 70.; *~ Monog., VI, 1836, p. 54, pl. xxx, fig. 12.—* CHENU, Bib. Conch., Ist ser. III, 1845, p.52, pl. xiv, figs. 1, la, 1b.—* Kuster, Conch. Cab., 1848, p. 53, pl. x1, fig.3.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 251.—* B. H. WricutT, Check List, 1888.—* PaTEL, Conch. Sam., IIT, 1890, p. 156. Ohio River drainage; Rouge River, near Detroit, Michigan; New York. (Group of Micromya celata.) Shell triangular ovate, with alow, rounded posterior ridge; male and female shells distinctly wrinkled behind. tMICROMYA CZ®LATA Conrad. *Unio celatus CONRAD, Am. Jl. Sci. and Arts, XXV, 1834, p. 338, pl. 1, fig. 1; New, F. W. Shells, 1834, p. 29, pl. 111, fig. 4, p. 68.—* FERussac, Guer. Mag., 1835, p. 29.—* MGLLER, Syn. Noy. Gen., 1836, p. 199.—* HANLEY, Test. Moll., 1842, p.175; * Biv. Shells, 1843, p. 175.—* CuENv, Bib. Conch., Ist ser., III, 1845, p. 16, pl. 111, fig. 3.—* CaTLow and REEVE, Conch. Nom., 1845, p. 56.— *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 497.—* REEVE, Conch. ‘According to Scudder the volume of the Transactions containing this species appeared in the latter part of 1831, and was acknowedged by correspondents as - received that year. Say published his U. capillus in the Transylvania Journal for December, 1831, and in the American Conchlogy changed it to lapillus. It is proba- ble that Lea’s name was published first. 526 PROCHEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. © Icon., XVI, 164, pl. 11, fig. 7.—*B H. Wrieut, Check List, 1888.—~ P2TEL, Conch. Sam., III, 1890, p. 147. * Margarita (Unio) celatus LEA, Syn., 1836, p. 12; 1838, p. 14. * Margaron (Unio) celatus L¥A, Syn., 1852, p. 20; 1870, p. 20. Tennessee River drainage; cited from Michigan by Sager and Miles, certainly in error. They might have mistaken for this a rather high specimen of fabalis. Genus LAMPSILIS Rafinesque, 1820. (Type, Unio ovatus Say.) Lampsilis RAFINESQUE, Aun. Gen. Sci. Phys. Brux., 1820, p. 298. Shell oval to elliptical, smooth or slightly concentrically sculptured, usually without a posterior ridge; epidermis generally smooth and shin- ing, often brilliantly rayed; beak sculpture, for the most part, consist- ing of fine, parallel ridges, which show a tendency to fall into an ante- rior and posterior loop; hinge with one or two pseudocardinals and one lateral in the right valve, and two pseudocardinals and two lat- erals in the left; female shell having a moderate and gradual inflation in the post-ventral region opposite the marsupium. Animal with the inner gills usually attached nearly or quite their entire length to the abdominal sac; marsupium occupying the hinder part of the outer gills; ovisacs distinct, separated by sulci, rounded below, having a fold near their bases, the whole projecting below the inner gills; mantle edge double and thickened, often swollen behind into a sort of flap in the female. Section LAMPSILIS Rafinesque. (Type, Unio ovatus Say.) Shell inflated, rather thin, shining, sometimes having a posterior ridge; beak sculpture coarse, consisting of a few, more or less, parallel ridges, which scarcely fallinto loops. Animal having the mantle of the female usually toothed and thickened on the post-basal portion, which develops into a large, curious flap when the gills are filled with ova. -+LAMPSILIS VENTRICOSUS Barnes. * Unio ventricosus BARNES, Am. Jl. Sci., VI, 1823, p. 267, pl. x1, fig. 14 (outline).— *Say, Am. Conch., No. IV, 1832, pl. xxx11.—* FERuSSAC, Guer. Mag., 1835, p. 26.—*C. B. Apams, Thompson’s History of Vermont, 1842, p. 167; F. W. and L. S. of Vermont, 1842, p. 17.—* HANLEY, Test. Moll., 1842, p. 189; * Biv. Shells, 1843, p. 189, pl. xx1v, fig. 8.—* DE Kay, Zool. of N. Y., Pt. 6, 1843, p. 190.—* CHENu, Bib. Conch., 1st ser. III, 1845, p. 45, pl. xu, figs. 1, 2.—* H. and A. ADAMS, Gen. Ree. Moll., IT, 1857, pp. 492, 495.—* SowErRBY, Conch. Icon., XVI, 1866, pl. x11, fig. 235.—* B. H. Wrieut, Check List, 1888. * Mya ventricosus EATON, Zool. Text-Book, 1826, p. 221. * Margarita (Unio) ventricosus LBA, Syn., 1836, p. 23; 1838, p. 18. * Margaron (Unio) ventricosus LEA, Syn., 1852, p. 26; 1870, p. 41. * Lampsilis ventricosus BAKER, Moll. Chicago, Pt. 1, 1898, p. 94, pl. X11, figs. 3-5.— *Smiru, Bull, U.S. Fish Com., 1899, p. 291, pl. LXXXIM. NO. 1205. SYNOPSIS OF THE NAITADES—SIMPSON. 527 * Lampsilis ventricosa STIMPSON, Shells of N. Eng., 1851, p. 14. * Unio radiatus HILDRETH, Am. J1. Sci., XIV, 1828, p. 286. Unio occidens Lra, Tr. Am. Phil. Soc., III, 1829, p. 435, pl. x, fig. 16.—Snorv and EaToNn, Transylvania J1., 1831, p.78.—* Lea, Obs., I, 1834, p. 49, pl. x, fig. 16.— *HANLEY, Test. Moll., 1842, p.189; * Biv. Shells, 1843, p. 189.—* CarLow and RrxEvk, Conch. Nom., 1845, p. 62.—* Kustmr, Conch. Cab. Unio, 1856, p. 170, pl. 11, figs. 1, 2.—* CHENU, Ill. Conch., 1858, pl. xm, figs. 5, 5a,5b.—*H. and : A. ADAMS, Gen. Ree. Moll., II, 1857, p. 494.—* CaLkins, Pr. Ottawa Acad. Sci., 1874, p. 44.—* LATCHFORD, Tr. Ottawa Field. Nat. Club, 1882, p.51.—* B. H. WRIGHT, Check List, 1888. ; * Margarita (Unio) occidens LEA, Syn., 1836, p. 23; 1838, p. 18. - * Margaron (Unio) oecidens Lma, Syn., 1852, p. 26; 1870, p. 41.1 * Unio subovatus Lua, Tr. Am. Phil. Soc., IV, 1831, p. 118, pl. xvu, fig. 46;2 * Obs., I, 1834, p. 128, pl. xvi, fig. 46.—* HANLEY, Test. Moll., 1842, p. 184; * Biv. Shells, 1843, p. 184, pl. xx, fig. 43.—*CaTLow and REEVE, Conch. Nom., 1845, p. 64." CHENU, Ill. Conch., 1858, pl. x11, figs. 6, 6a, 6b.—* H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 496.—* SowerBy, Conch. Ieon., XVI, 1866, pl. Xxx1I, fig. 163; 1868, pl. Lxxxv, fig. 456.—*B. H. Wriaut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 168. _* Margarita ( Unio) subovatus LEA, Syn., 1836, p. 19; 1838, p.17. * Margaron (Unio)subovatus Lra, Syn., 1852, p. 24; 1870, p. 37. *Unio cardium CONRAD, New F. W. Shells, 1834, p. 68.2—Say. Am. Conch., VI, 1834.—ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 246.—KusrrEr, Conch. Cab. Unio, 1856, p. 169, pl. L, figs. 1-4. * Unio cardium Raf. v. occidens PHTEL, Conch. Sam., III, 1890, p. 174. * Unio cardium Raf. v. ventricosus P&TEL, Conch. Sam., III, 1890, p. 147. * Unio fasciolus, FERusSAC, Guer. Mag. 1835, p. 26. * Unio ovata, DESHAYES, An. sans. Vert., 3d ed. 1839, p. 669. *Unio ovatus KusTER, Conch. Cab. Unio, 1852, p. 55, pl. x11, fig. 1. *Unio lenis CONRAD, Monog., XII, 1840, p. 106, pl. Lv, fig. 2.4 *Unio canadensis Lea, Proc. Acad. N. Sci. Phila., I, 1857, p.85;° *Jl. Ac. Nat. Sci. Phila., LV, 1860, p. 268, pl. xiv, fig. 148; *Obs., VII, 1860, p. 86, pl. xxtv, fig. 148.—B. H. Wricut, Check List, 1888. * Margaron (Unio) canadensis LEA, Syn., 1870, p. 37. *Unio dolabreformis SOwERBY, Conch. Icon., XVI, 1867, pl. LIx, p. 298. *Unio latissimus SOWERBY ?, Conch. Icon., XVI, 1868, pl. LXV1, fig. 337. TLAMPSILIS VENTRICOSUS var. SATUR Lea. “Unio satur LEA, Pr. Am. Phil. Soc.,V., 1852, p. 25256 Tr. Am. Phil. Soc., X, 1852, p. 205, pl. x vil, fig. 19; *Obs., V, 1852, p. 21, pl. xvit, fig. 19.—*ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p.257.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, ‘Lea says this is so close to U. ventricosus that it would be well to unite them. Foot note in Synopsis, 1870, p. 41. >This is, | am sure, a fine male U. ventricosus Barnes. Dr. Lea is inclined to this opinion in a footnote on p. 118 of the Transactions. ‘Conrad refers this species to Rafinesque. From the latter author’s figure and description of Lampsilis cardium it is evident that it is a member of the ventricosus group, but whether it is the U. ventricosus of Barnes, the U. capax of Green, or some other species, [am unable to determine. Conrad and some other authors believe it to be Barnes’s species. 4 The type in the Philadelphia Academy is a young U. ventricosus. ° The type is a diseased individual, and is probably a compressed male ventricosus. ° J believe this to be merely a rather delicate, dark-colored variety of ventricosus, which inhabits the southwestern part of the Mississippi drainage. 528 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. p. 496.—* CuENu, Man., 1859, II, p. 138, fig. 666.—* SowERBy, Conch. Icon., XVI, 1868, pl. xcu, fig. 501.—* B. H. Wricut, Check List, 1888.—* PaTEt, Conch. Sam., III, 1890, p. 166. * Margaron (Unio) satur Lea, Syn., 1852, p. 24; 1870, p. 37. Entire Mississippi drainage; St. Lawrence system; Nelson River and tributaries; the variety satur in the Southwest to the Sabine River, Texas. +LAMPSILIS EXCAVATUS Lea. * Unio excavatus Lma, Pr. Ac. N. Sci. Phila., IX, 1857, p.32; *Jl. Ac. N. Sci. Phila., IV, 1858, p. 71, pl. x11, fig. 52; *Obs., VI, 1858, p. 71, pl. x11, fig. 52.—*CHENU, Man., 1859, II, p. 138, fig. 665.—* SowERBy, Conch. Icon., XVI, 1868, pl. Lxx, VII, p. 403.—* B. H. Wrieut, Check List, 1888.—* PaTEL, Conch. Sam., ITI, 1890, p. 152. *Margaron (Unio) excavatus Lea, Syn., 1870, p. 37. *? Unio ovatus SAY var. ornatus CONRAD, Monog., I, 1835, p. 4.! *Unio ornatus SOWERBY, Conch. Icon., XVI, 1866, pl. Xxx1, fig. 162.—*B. H. WRIGHT, Check List, 1888. Tombigbee and Alabama river drainage. + LAMPSILIS BINOMINATUS Simpson.? * Unio lineatus LEA, Pr. Am. Phil. Soc., I, 1840, p. 287; *Tr. Am. Phil. Soe.,VIIT, | 1842, p. 206, pl. x11, fig. 20; *Obs., III, 1842, p. 44, pl. xu, fig. 20.—* Conran, Pr. Ac. N. Sei. Phila., VI, 1853, p. 251.—*H. and A. Apams, Gen. Ree. Moll. II, 1857, p. 497.—* CuENnu, Il]. Conch., 1858, pl. xxviut, figs. 1, la, 16.— * KuSTER, Conch. Cab. Unio, 1862, p. 278, pl. xcrv, fig. 1.—* SOWERBY, Conch. Icon., XVI, 1868, pl. Lx1, fig. 309.—* B. H. Wriaut, Check List, 1888,— * PmTEL, Conch. Sam., III, 1890, p. 157. * Margaron (Unio) lineatus LEA, Syn., 1852, p. 27; 1870, p. 41. Chattahoochee and Flint rivers, Georgia. t LAMPSILIS CARIOSUS Say. Unio cariosus Say, Nich. Encye., II, 1816, pl. 111, fig. 2.2—SnHorr and Eaton Transylvania Jl. 1831, p.70.—* Say, Am. Conch., VI, 1834.—*Conrab, New F. W. Shells, 1834, p. 68.—* FERussac, Guer. Mag., 1835, p. 26.—* CONRAD, Monog. IV, 1836. p. 40, pl. x1x.—* GOULD, Inv. of Mass., 1841, p. 111, fig. 72.— * BINNEY, Inv. of Mass., 1870, p. 172, fig. 475.—* REEVE, Conch. Syst., I, 1841, p. 119, pl. LXXXxIx, fig. 10.—* HANLEY, Test. Moll., 1842, p. 190.—* DE Kay, Zool. of N. Y., Pt.5, 1843, p. 193, pl. Xx1, figs. 243, 244.4—* HANLEY, Biv. Shells, 1843, p. 190, pl. xx, fig. 22.—*CaTLOW and REEVE, Conch. Nom., 1845, p. 57.— *KUSTER, Conch. Cab. Unio, 1852, p. 24, pl. 1, figs. 2, 3.—*~ ConraD, Pr. Ac. N. Sei. Phila., VI, 1835, p.246.—* DEwny, Ninth Rep. N. Y. State Cab., 1856, p.35.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 493.—* SowERBy, 1Tt is hard to tell just what this is, as Conrad does not figure or describe it. He states that while it is probably excavatus it is not certainly so, and he does not think it wise to displace Lea’s properly described and figured species for it. 2 Lea’s name was preoccupied by Valenciennes (Encyc. Meth., II, 1827, p. 151, pl. COXLVIU, fig. 5) for what is probably U.radiatus. I change it to binominatus. 3 The first edition of Nicholson’s Encyclopedia is dated 1816, fide W. G. Binney, Bib. N. Am.Conch., I, 1863, p. 25, and by Lea, Synopsis, 4th ed., pp. 154, 159. 4The figures are very probably taken from U. ventricosus. NO, 1205. SYNOPSIS OF THE NAL ADE Ss SIMPSON. 529 Gonche ‘Teas, XVI, 1867, val LVIIl, Be ORO VAL a Hn and MICHENER, Conch. Cest., 187 74, p. 38, fig. 1838.—* LaTrcurorD, Tr. Ottawa Field Nat. Club, 1882, p. 51.—* B. H. Wricut, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 147.—* Simpson, Nautilus VITI, 1895, p. 122, 2 figures.! *Margarita (Unio) cariosus LEA, Syn., 1836, p. 23; 1838, p. 18. Margaron (Unio) cariosus LEA, Syn., 1852, p.27; 1870, p. 42. * Unio cariosa LAMARCK, An. sans Vert., VI, 1819, p. 80.—* DEsHayns, An. sars Vert., 2d ed., VI, 1835, p. 545; 3d ed., II, 1839, p. 671. * Mya cariosa EATON, Zool. Text Book, 1826, p. 218. * Lampsilis cariosa STIMPSON, Shells of N. Eng., 1851, p. 14. * Unio ovatus var. b. LAMARCK, An. sans Vert., VI, 1819, p. 75. * Unio ovata VALENCIENNES, Rec. Obs. Zool. Anat., II, 1833, p. 226, pl. 1, figs. 1, Gi, ID, Ike; * Unio viridis FERUsSAC, Guer. Mag., 1835, p. 27. * Unio oratus CONRAD, Ann. and Mag. Nat. Hist., 1V, 1849, p. 301; * Pr. Ac. N. Sci. Phila., IV, 1849, p. 153; *Jl. Ac. N. Sci. Phila., 1850, p. 276, pl.xxxvui; fig. 6; Pr. Ac. N. Sci. Phila., VI, 1853, p. 254. Atlantic drainage from Georgia to the lower St. Lawrence.’ +LAMPSILIS ALTILIS Conrad. *Unio altilis CONRAD, New F. W. Shells, 1834, p. 43, pl. 1, fig. 1, and p. 68.— *FERUSSAC, Guer. Mag., 1835, p. 29.—* MOLLER, Syn. Nov. Gen., 1836, p. 207.—* HaNLeEY, Test. Moll., 1842, p. 190; Biv. Shells, 1843, p. 190.—* CaTtLow and REEVE, Conch. Nom., 1845, p. 55.—* CHENU, Bib. Conch., Ist ser., III, 1845, p. 21, pl. 1, fig. 1.—*ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 244.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 493.—* B. H. Wriaut, Check List, 1888.—* P@& TEL, Conch. Sam., TH, 1890, p. 144. ienGeERe (Unio) altilis LEa, ca 1836, p. 24; 1838, p. 19. *Margaron ( Unio) altilis LEA., Sone 1852, p. 27; 1870, p. 42. Alabama River drainage; Little Red River, Clinton, Arkansas? tLAMPSILIS DOLABRA=FORMIS Lea. *Unio dolabreformis Lea, Tr. Am. Phil. Soc., VI, 1838, p. 103, pl. xxrv, fig. 113; *Obs., II, 1838, p. 103, pl. xx1v, fig. 113.—* TRoscHEL, Arch. fiir Naturg., V, 1839, II, p. 237.—* HANLEY, Test. Moll., 1842, p. 189; * Biv. Shells., 1843, p. 189, pl. xxi, fig. 47.—* CaTLow and REEVE, Conch. Nom., 1845, p. 58.— * CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 248.—* CuHENu, Il. Conch., 1858, pl. Xx1ul, figs. 6, 6a, 6b.—* H. and A. ADAMs, Gen. Ree. Moll., II, 1857, p. 494.— * KUSTER, Conch. Cab., 1861, p. 170, pl. Lu, figs. 1, 2.—* B. H.Wrieut, Check List, 1888.—* Pate, Conch. Sam., III, 1890, p. 151. *Margarita (Unio) dolabreformis Lia, Syn., 1838, p. 18. *Margaron (Unio) dolabrwformis LEA, Syn., 1852, p. 27; 1870, p. 41. Savannah, Ogeechee, and Altamaha rivers, Georgia. + LAMPSILIS CAPAX Green. *Unio capax GREEN, Cab. Nat. Hist., II, 1832, p. 290.—*Conrap, New F. W. Shells, 1834, p. 68.—* FERussaAC, Guer. Mag., 1835, p. 26.—* ConRAD, Monog., IX, 1837, p. 75, pl. xiir.—* Kuster, Conch. Cab. Unio, 1852, pp. 21, 65, pl. Xv, fig. 3.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 245.—* H. and A. - By an error the Reine ai hes species and U, eelna aceus were changed. ?Thespecimens referred to this species that are often reported from the Mississippi drainage are no doubt L. ventricosus. Proc. N. M. vol. xxii 34 530 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. Apams, Gen. Rec. Moll., II, 1857, p. 493.—* SowErRBy, Conch. Icon., XVI, 1866, pl. Lu, fig. 274.—* CALKINS, Pr. Ottawa Ac. Nat. Sci., 1874, p. 41.—* B. H. WriGHT, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 147. * Ma,sgaron (Unio) capax LEA, Syn., 1852, p. 27; 1870, p. 42. * Lampsilis capax Smiru, Bull. U.S. Fish Com., 1899, p. 291, pl. LXxxty. * Symphynota globosa LEA, Tr. Am. Phil. Soc., V, 1832, p. 41, pl. Iv, fig. 12; *Obs., I, 1834, p. 153, pl. Iv, fig. 12.—* Frrussac, Guer. Mag., 1835, p. 25. * Margarita ( Unio) globosa Lra, Syn., 1836, p. 23. * Unio globosus HANLEY, Test. Moll., 1842, p. 188; “Biv. Shells, 1843, p. 189.— *CaTLOw and REEVE, Conch. Nom., 1845, p. 59. ; * Margarita (Unio) globosus LEA, Syn., 1838, p. 18. Lower Ohio River drainage; southwest to St. Francis River, Arkan- sas; north to eastern Iowa; Elkhorn and Blue rivers, Nebraska? (Aughey). Abundant locally. +LAMPSILIS OVATUS Say.! Unio ovatus Say, Nich. Encye., II, 1816, pl. 11, fig. 7.—* Lamarck, An. sans Vert., VI, 1819, p. 75.—* HILDRETH, Am. Jl. Sci., XIV, 1828, p. 287.—SHORT and EaTon Trans. J1., 1831, p. 78.—* Say, Am. Conch., VI, 1834.—* Conran, New F. W. Shells, 1834, p. 70; *Monog. I, 1835, p. 4, pl. 11.—* FERussac, Guer. Mag., 1835, p. 26. —* HANLEy, Test. Moll., 1842, p. 184; * Biv. Shells, 1843, p. 184.—* CaTLow and REEVE, Conch. Nom., 1845, p.62.—* KusTmrR, Conch. Cab. Unio, 1852, p. 22, pl. m1, fig. 2.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 254.—* H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 495.—* SowERBY, Conch. Icon., XVI, 1866, pl. Xxx1, fig. 164.—* B. H. Wrient, Check List, 1888,— * PamtTEL, Conch. Sam., III, 1890, p. 162. * Margarita (Unio) ovatus LEA, Syn., 1836, p.19; 1838, p. 17. *Margaron (Unio) ovatus, LEA, Syn., 1852, p. 24; 1870, p. 37. * Unio ovata LAMARCK, An. sans Vert., VI, 1819, p.75.—* Stark, Nat. Hist., II, 1828, p. 90.—?* VALENCIENNES, Coq. Marines, Biv.,!1833, pl. L, figs. 1, la, 1b, 1le.— *DESHAYES, An. sans Vert., 2d ed., VI, 1835, p. 538; 3d ed., II, 1839, p. 669. *Lampsilis ovata RAFINESQUE, Ann. Gen. Sci. Phys. Brux., V, 1820, p. 298. *Mya ovata EaTON, Zool. Text Book, 1826, p. 218. * Aglia ovata SWAINSON, Treat. on, Mal., 1840, p. 266, fig. 49. Ohio River drainage. +LAMPSILIS OCHRACEUS Say. Unio ochraceus Say, Nich. Encye., 1816, pl. 11, fig. 8.—* CONRAD, New F. W. Shells, 1834, p. 70.—* FERUSSAC, Guer. Mag., 1835, p. 25.—* Conrab, Monog., IV, 1836, p. 37, pl. Xvi1l, fig. 2.—* GOULD, Inv. Mass., 1841, p. 112, fig. 74; 1870, p. 173, fig. 476.—* HANLEY, Test. Moll., 1842, p. 190; * Biv. Shells, 1843, p. 190, pl. xx, fig. 48?—* DE Kay, Zool. of N. Y., Pt. 5, 1843, p. 193, pl. Lx1x, figs. 237, 238.— *CaTLOW and REEVE, Conch. Nom., 1845, p.62.—*Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 254.—* KustTEr, Conch. Cab. Unio, 1856, p. 163, pl. xLvm, fig. 1.—* H. and A. ApDams, Gen. Rec. Moll., II, 1857, p. 494.—* Sowmrsy, Conch. Icon., XVI, 1868, pl. Lx111, fig. 317.—* HARTMAN and MICHENER, Conch. Cest., 1874, p. 39, fig. 184.—* B. H.WriGutT, Check List, 1888.— PaTEL, Conch. Sam., III, 1890, p. 161.—* Simpson, Nautilus, VIII, 1895, p. 122, fig.2 *Margaron ( Unio) ochraceus LEA, Syn., 1852, p.27; 1870, p. 42. *Mya ochracea EATON, Zool. Text Book, 1826, p. 218. 1The name ovatus was used for Unio tumidus Retz, by Lister, Donovan, and others, but as it was called a Mya and the generic name Unio was never used with it, Say’s name can stand for this species. 2 The figure given for this species, by an error of the printer, is a female cariosus. Fen ect, NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 531 * Symphynota ochracea LEA, Tr. Am. Phil. Soc., II], 1830, p. 455; “Obs. I, 1834, p. 69. * Margarita (Unio) ochracea LEA, Syn., 1836, p. 23; 1838, p. 18. *Lampsilis ochracea STIMPSON, Shells of N. Eng., 1851, p. 14. *Unio crocatus LrA, Pr. Am. Phil. Soc., II, 1841, p. 31; *Tr. Am. Phil. Soc., VIII, 1842, p. 238, pl. xxuJ, fig. 52; * Obs., ILI, 1842, p. 76, pl. x x11, fig. 52.—* Conran, Pr. Ac. N. Sci. Phila., VI, 1853, p. 247.—* CHENU, Il. Conch., 1858, pl. xx x11, figs. 1, la, 1b.—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 493.—* B. H. Wariagut, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 149. * Margaron (Unio) crocatus LEA, Syn., 1852, p. 27; 1870, p. 42. *Unio rosaceus CONRAD, Pr. Acad. N. Sci., Phila., IV, 1849, p. 153; *Ann. and Mag. Nat. Hist., IV, 1849, p. 303; *J1l. Acad. N. Sci., Phila., I, 1850, p. 275, pl. Xxxvil, fig. 5. * Unio troostensis SOWERBY, Conch. Icon., XVI, 1866, pl. xxxvu1, fig. 210. * Unio afinis SowERBY? Conch. Icon., XVI, 1868, pl. Lx1tr, fig. 318. Atlantic drainage, from New England to the Ogeechee River, Georgia. tLAMPSILIS SPLENDIDUS Lea. *Unio splendidus Lea, Tr. Am. Phil. Soc., VI, 1838, p. 70, pl. x1x, fig.61; * Obs., IT, 1838, p. 70, pl. x1x, fig. 61.—* TROsSCHEL, Arch. fiir Naturg.,V, 1839, Pt. 2, p. 237.—* HANLEY, Test. Moll., 1842, p. 190; * Biv. Shells, 1843, p. 190.—* CaTLow and REEVE, Conch. Nom., 1845, p. 64..—* KusreEr, Conch. Cab. Unio, 1852, p. 55, pl. x1, fig. 2.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 257.—--* H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 495.—* CuENU, Ill. Conch., 1858, pl. xvi, figs. 7, 7a, 7b.—* SOWERBY, Conch. Icon., X VI, 1866, pl. xx x1, fig. 161.—* B. H. WriGut, Check List, 1888.—* Pa TEL, Conch. Sam., ITI, 1890, p. 168. * Margarita ( Unio) splendidus Lra, Syn., 1836, p. 23; 1838, p. 18. * Margaron (Unio) splendidus La, Syn., 1852, p. 27; 1870, p. 42. *Unio regularis SOwERBY, Conch. Icon., XVI, 1868, pl. xxxIv, fig. 181. Altamaha and Ogeechee rivers, Georgia. LAMPSILIS DELUMBIS Conrad.! * Unio delumbis CONRAD, New F. W. Shells, 1834, p. 35, pl.v, fig. 3; p. 69.—* FERUS- sac, Guerin Mag., 1835, p. 29.—* MOLLER, Syn. Nov. Gen., 1836, p. 204.— *CHENU, Bib. Conch., 1st ser., III, 1845, p. 18, pl. 1, fig. 10.—* Conrap, Pr. Ac. N. Sei. Phila., VI, 1857, p. 248.—* B. H. Wriaut, Check List, 1888,— * P#TEL, Conch. Sam., III, 1890, p. 150. Small streams near Cooper River, South Carolina. +LAMPSILIS PEROVALIS Conrad. *Unio perovalis CONRAD, New F. W. Shells, 1834, p. 43, pl. u, fig. 2, p. 71.— * FERUSSAC, Guer. Mag., 1835, p. 29.—* MOLLER, Syn. Nov. Gen., 1836, p. 207.— *HANLEY, Test. Moll., 1842, p.191; * Biv. Shells, 1843, p. 191.—* CatLow and REEVE, Conch. Nom., 1845, p. 62.—*CHENU, Bib. Conch., Ist ser., III, 1845, p. 21, pl. 1, fig. 2.—* ConrapD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 254.—* H.and A. ADAMS, Gen. Rec. Moll., Il, 1857, p. 494.—* KusTErR, Conch. Cab. Unio, 1861, p. 257, pl. LXXxvu, fig. 2.—*B. H. Wriaut, Check List, 1888.—* Pa TEL, Conch. Sam., ITI, 1890, p. 163. * Margarita ( Unio) perovalis LEA, Syn., 1836, p. 24; 1838, p. 19. * Margaron (Unio) perovalis LEA, Syn., 1852, p. 27; 1870, p. 42. Alabama and Black. Warrior rivers. Doe PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. X11. ,LAMPSILIS PERPASTUS Lea. “Unio perpastus Lea, Pr. Ac. N. Sci. Phila., V, 1861, p..60; *Jl. Ac. N. Sci. Phila., V, 1862, p. 69, pl. vu, fig. 219; *Obs., VIII, 1862, p. 73, pl. vii. fig. 219.— *B. H. Wricut, Check List, 1888. ’ *Margaron (Unio) perpastus LEA, Syn., 1870, p. 43. Swamp Creek, Georgia; Coosa River, Alabama. + LAMPSILIS CLARKIANUS Lea. *Unio clarkianus Lua, Pr. Am. Phil. Soc., V, 1852, p. 251; *Tr. Am. Phil. Soc., X, 1852, p. 273, pl. xx1, fig. 30; *Obs., V, 1852, p. 29, pl. xx1, fig. 30.—* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 246.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 493.—* B. H. Wrieut, Check List, 1888.—* Pa:rEL, Conch. Sam., III, 1890, p. 148. * Margaron ( Unio) clarkianus LEA, Syn., 1852, p. 27; 1870, p. 42. *t Unio spillmanii LEA, Pr. Ac. N. Sci. Phila., XIII,1861, p. 39; *J1l. Acad. N. Sci. Phila., V, 1862, p. 98, pl. xv, fig. 246; *Obs., VIII, 1862, p. 102, pl. xv, fig. 246.— *B. H. WriecutT, Check List, 1888. * Margaron (Unio) spillmanii LEA, Syn., 1870, p. 42. Williamsport, Tennessee; near Columbus, Mississippi; Cahawba and Black Warrior rivers, Alabama. +LAMPSILIS GERHARDTII Lea. “Unio gerhardtii Lea, Pr. Acad. N. Sci. Phila., VI, 1862, p.168; *J1l. Ac. N. Sci. Phila., V, 1862, p. 208, pl. xxxzJ, fig. 277; * Obs., IX, 1863, p. 30, pl. xxx1, fig. 277.—* B. H. WricutT, Check List, 1888. * Margaron ( Unio) gerhardtii LEA, Syn., 1870, p. 35. Chattanooga (river?), Georgia; Shorter, Alabama. + LAMPSILIS MULTIRADIATUS Lea. *Unio multiradiatus Lea, Tr. Am. Phil. Soc., III, 1829, p. 434, pl. rx, fig. 15; * Obs. I, 1834, p. 48, pl. rx, fig. 15.—* CoNnRAD, N. F.W. Shells, 1834, p. 70.—* DESHAYES, An. sans Vert., 2d ed., VI, 1835, p. 549; 3d ed., II, 1839, p. 673.—* Haney, Test. Moll., 1842, p.190; * Biv. Shells, 1843, p. 190, pl. xxi, fig. 10.—* CaTLow and REEVE, Conch. Nom., 1845, p. 61.—* H. and A. ADAMS, Gen. Rec. Moll, II, 1857, p. 494.—* CHENU, II]. Conch., 1858, pl. xu, figs. 2, 2a, 2b.—* SOWERBY, Conch. Icon., XVI, 1868, pl. Lxx, fig. 506a.—* B. H. WricuT, Check List, 1888.— * PATEL, Conch. Sam., III, 1890, p. 160. * Margarita (Unio) multiradiatus Lea, Syn., 1836, p. 24; 1838, p. 19. * Margaron (Unio) multiradiatus LEA, Syn., 1852, p.31; 1870, p. 42. * Unio fasciolus Say, Am. Conch., VI, 1834.—* ConrabD, Monograpby, III, 1836, p. 26, pl. x1, fig. 2.—* KusrER, Conch. Cab. Unio, 1852, p. 82, pl. v, fig. 4. *t Unio perradiatus Lea, Pr. Ac. N. Sci. Phila., II, 1858, p.40; *J1. Ac. N. Sei. Phila., V, 1862, p. 66, pl. vi, fig. 215; Obs., VIII, 1862, p. 70, pl. vi, fig. 215.—* B. H. Wricut, Check List, 1888.. ; * Margaron (Unio) perradiatus LEA, Syn., 1870, p. 37. * Unio altilis, REEVE, Conch. Icon., XVI, 1865, pl. xx111, fig. 109. * Unio perovalis SOWERBY, Conch. Icon., XVI, 1866, pl. Xxxxv111, fig. 209. Entire Ohio River drainage; Southern Michigan; New York? (Mar- shall). A: NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 533 +LAMPSILIS DOLIARIS Lea. Unio doliaris Lna, Pr. Ac. N. Sci. Phila., X VII, 1865, p.88; *J!. Ac. N. Sci. Phila., VI, 1868, p.260, pl. xxxuI, tig. 75; *Obs., XII, 1869, p. 20, pl. xx xu, fig. 75.— *B. H. WriGuT, Check List, 1888. * Margaron (Unio) doliaris LEA, Syn., 1870, p. 42. Alabama and Tombigbee drainage. 7,LAMPSILIS BREVICULUS Call. * Unio breviculus CALL, Pr. U.S. Nat. Mus., X, 1887, p. 499, pl. xxvitt; * Tr. Ac. Sci. St. Louis, VII, 1895, p. 6, pl. xv. tLAMPSILIS BREVICULUS var. BRITTSI Simpson. *Lampsilis brittsi Simpson, Pr. Ac. N. Sci. Phila., 1900, p. 76, pl. v, figs. 1, 2.! White and Current rivers, Arkansas; Texas County, Missouri. tLAMPSILIS BIANGULATUS Lea.’ * Unio biangulatus LEA, Pr. Am. Phil. Soc., I, 1840, p. 288; * Tr. Am. Phil. Soc., VIII, 1843, p. 197, pl. 1x, fig. 8; * Obs., ILI, 1842, p.35, pl. rx, fig. 8.—* Conran, Pr. Ac. N. Sci. Phila., 1853, p. 245.—*CuHENU, Ill. Conch., 1858, pl. xxx, figs. 7, Ta, 7b.—* H. and A. ADAMS, Gen. Rec, Moll., II, 1857, p. 492.—* KustrEr, Conch. Cab. Unio, 1861, p. 189, pl. Lx, fig. 1; pl. Lx1, fg. 1.—*SoweErsy, Conch. Icon., XVI, 1868, pl. Lxxx, fig. 421.—*B. H. Wrieut, Check List, 1888.—* PaTeEL, Conch. Sam., ITI, 1890, p. 146. Margaron (Unio) biangulatus LEA Syn., 1852, p. 38, 1870, p. 61. Tennessee drainage. LAMPSILIS SUBVEXA Conrad.? * Anodonta subveca CONRAD, Am. J1. Sci., XXV, 1834, p. 341, pl.1, fig.1; *New F.W. Shells, 1834, p. 73.—* FERUSSAC, Guer. Mag. 1835, p.25.—* MOLLER, Syn. Nov. Gen., 1836, p. 194.—* Conrab, Pr. Acad. N. Sei. Phila., VI, 1853, p. 264.— “H.and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 503.—* B. H. Wrieut, Check List, 1888.—* PTre., Conch. Sam., III, 1890, p. 185. 1At the time I published the L. brittsi I believed it to be a valid species. Since then I have seen additional material which seems to be a connecting link between it and L. breviculus. JI can not be certain as to the relationships of this form, which seems on the one hand to have characters belonging to the typical section of Lamp- silis and on the other to be related to L. spatulatus and L. pleasi. 2The systematic position of this species is a little uncertain. In the form of the shell and the teeth it seems to belong in the Ventricosus group, but the texture and broken rays apparently ally it to the Ligamentinus group. The soft parts agree best with those of members of the former assemblage, so I place it here. 31 do not know what this is, nor where it belongs, but it is certainly not a true Anodonta. The shell, according to Conrad’s figure, is rayed throughout, and iooks very much like a young U. ventricosus. He says that it has a callus resembling an incipient tooth; that it inhabits the Black Warrior River, and that it is very rare. It is just possible that it is related to some of the so-called Margaritanas of the Southern States, such as W. spillmani, but I think it more likely some young form of the Ventricosus group in which the hinge has been injured. I place it here with the greatest hesitation. 534 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL. XX. * Margarita (Anodonta) subvexa LEA, Syn., 1836, p.52; 1838, p. 31. *Anodon subvexa CATLOW and REEVE, Conch. Nom., 1845, p, 68. *Margaron (Anodonta) subvexa LEA, Syn., 1852, p.50; 1870, p. 81. Black Warrior River, Alabama. Section EURYNIA Rafinesque, 1820, (Type, Unio recta Lamarck.) Shell oval to oblong; beak sculpture delicate, doubly looped; mantle double edged and often toothed below; that of the female sometimes developed into a thickened flap at the post base.! (Group of Lampsilis luteolus.) Shell shining, generally rayed; beak sculpture often broken, with the posterior loop open behind; pseudocardinals rather small, com- pressed, smooth inside, and often curved slightly upward. +LAMPSILIS LUTEOLUS Lamarck. * Unio luteola LAMARCK, An. sans Vert., VI, 1819, p. 79.—*DESHAYES, An. sans Vert., 2d ed. VI, 1835, p. 544; 3d ed. II, 1839, p. 671. * Unio luteolus HANLEY, Test. Moll., 1842, p. 192.—* DE Kay, Zool. of New York, Pt. 5, 1843, p. 190, pl. xx, fig. 241.—* Haney, Biv. Shells, 1843, p. 192, pl. xx111, fig. 16.—* CaTLOow and REEVE, Conch. Nom., 1845, p. 60.—*CoNnrRaD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 251.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 494.—* SowERBY, Conch. Icon., XVI, 1867, pl. Lvul, fig. 293, 293a, 293b.— * LATCHFORD, Tr. Ottawa F. Nat. Club, 1882, p. 51.—* B. H. Wriegut, Check List, 1888.—* P&TEL, Conch. Sam., III, 1890, p. 158.—* CauL, Tr. Acad. Sci. St. Louis, VII, 1895, p. 25, pl. m1. * Margarita (Unio) luteolus LEA, Syn., 1836, p. 25; 1838, p. 19. * Margaron (Unio) luteolus LEA, Syn., 1852, p. 28; 1870, p. 44. * Lampsilis luteolus BAKER, Moll. Chicago, Pt. 1, 1898, p. 103, pls. XI, XXXvII, fig. 12. * Unio inflatus BARNES, Am. J1. Sci., VI, 1823, p. 266.—* CONRAD, New F.W. Shells, 1834, p. 69. * Mya inflata EATON, Zool. Text-Book, 1826, p. 221. * Unio siliquoideus BARNES, Am. Jl. Sci., VI, 1823, p. 269, pl. x1, fig. 150 (ont- line).—* FERUSSAC, Guer. Mag., 1835, p.27.—* CONRAD, Monog., IT, 1836, p. 22, pl. x, fig. 1.—*C. B. ApAmMs, Thompson’s Hist. of Vermont, 1842, p. 167; F.W.and L.S. of Vermont, p. 17, 1842. * Unio siliquoides KUSTER, Conch. Cab. Unio, 1852, p. 30, pl. v, fig. 2. * Mya siliquoidea, EATON, Zool. Text-Book, 1826, p. 221. * Lampsilis siliquoidea STIMPSON, Shells of New Eng., 1851, p. 14. * Unio childreni HANLEY, Biv. Shells, 1843, p. 193, pl. xx111, fig. 57. * Unio hydianus KUSTER, part, Conch. Cab. Unio, 1861, p. 201, pl. Lx vi, fig. 1. ? * Unio distans ANTHONY, Am. Jl. Conch., I, 1865, p. 156, pl. x11, fig. 2.—* B. H. Wricut, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 151. * Unio multiradiatus SOWERBY, Conch. Icon., XVI, 1868, pl. LX1, fig. 306. * * Unio afinis SOwERBY, Conch. Icon., XVI, 1858, pl. LX1, fig. 307. ‘Lea has figured a female animal of LZ. radiatus in Observations II, pl. xv, which has a curious, winglike projection on the mantle at its posterior base. 2 There are two figures; the first is luteolus, the second is hydianus. *Changed in errata to luteolus. The figure 306qa, pl. LXx, is a genuine multiradiatus. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 535 +LAMPSILIS LUTEOLUS var. ROSACEUS De Kay. * Unio rosaceus Db Kay, Zool. of New York, V, 1843, p. 192, pl. XX XIX, figs. 355, 356; pl. xt, fig. 357..—ConrabD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 257.—B. H. WriGut, Check List, 1888. ' Hntire Mississippi drainage, southwest to the Brazos River, Texas; St. Lawrence drainage; entire Dominion of Canada east of the Rocky Mountains; the variety rosaceus in the St. Lawrence area. + LAMPSILIS SUPERIORENSIS Marsh.? * Unio superiorensis Marsu, Naut., X, 1897, p. 103, pl. 1, figs. 1, 2, 5. Upper Great Lakes region. + LAMPSILIS BOREALIS A. F. Gray.’ * Unio borealis A. F. Gray, Tr. Ottawa Field Nat. Club, 1882, p. 53, pl., 3 figures.—* B. H. WricuT, Check List, 1888. Lower St. Lawrence drainage, to Lake Michigan; Lake of the Woods. tLAMPSILIS RADIATUS Gmelin. * Mya radiata GMELIN, Syst. Nat., 13th ed., 1792, p. 3220.—* Woop, Gen. Conch., I, 1815, p. 109.—* DinLwyn, Cat. I, 1817, p. 51.—* Woop, Index Test. 2d ed., 1825, p. 12, pl. u, fig. 2.—* Eaton, Zool. Text-Book, 1826, p. 220.—* HANLEy, Index Test., 3d ed., 1856, p. 16, pl. 11, fig. 32. 5 * Unio radiata LAMARCK, An. sans. Vert., VI, 1819, p.73.—* DESHAYEs, Hist. Nat. des Vers., II, 1830, p. 581; *An. sans. Vert., 2d ed., VI, 1835, p. 535; 3d ed., 1839, p. 668.—* HANLEY, Test. Moll., 1842, p. 212. * Lampsilis radiata Stimpson, N. Eng. Shells, 1851, p. 13. ~ Unio radiatus SPENGLER, Skriv. Nat. Selsk., V, 1792, p.3; III, 1793, p. 62.—* Con- RAD, New F. W. Shells, 1834, p. 71.—* FERussAc, Guer. Mag., 1835, p. 27.— * ConraD, Monog., IT, 1836, p. 24, pl. x, fig. 2.—* SOWERBY, Rich. Faun. Bore- ali Am., III, 1836, p. 316.—*GouLp, Iny. of Mass., 1841, p. 110, fig. 73.; 1870, p. 170, fig. 474.—* Haney, Test. Moll., 1842, p. 193; * Biv. Shells, 1843, p. 193.—* CaTLow and REEVE, Conch. Nom., 1845, p. 63.—* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 256.—* KusTEer, Conch. Cab. Unio., 1852, p. 29, pl. vy, fig. 1.—* H. and A. ApAMs, Gen. Rec. Moll., II, 1857, p. 494.—* REEVE, Conch. Icon., XVI, 1865, p. 27, pl. xxvu, fig. 139.—* HARTMAN and MICHE- NER, Conch. Cest., 1874, p. 87, fig. 182.—* LatcuFrorD, Tr. Ottawa F. Nat. Club, 1882, p. 50.—* B. H. Wricut, Check List, 1888.—*H. CARPENTER, Naut., IV, 1890, p. 22.—* PasTEL, Conch. Sam., III, 1890, p. 165. * Margarita (Unio) radiatus LEA, Syn., 1836, p. 25; 1838, p. 19. * Margaron (Unio) radiatus LEA, Syn., 1852, p. 29; 1870, p. 44. * Unio pictorum tenuis Indiv, etc.—CHEMNITZ, Conch. Cab., 1788, p. 23, pl. II, florets 'The type of De Kay’s variety is a delicate shell with peculiarly pallid brown epidermis, slightly rayed, and having a rose-colored nacre. This form is often desti- tute of the fine tinting of the nacre, and sometimes becomes quite dark, even bronzy or brownish black. It is common in the lakes of the St. Lawrence drainage. 2This and L. borealis A. F. Gray are doubtful species which seem to stand between L. luteolus and radiatus. ‘This form is nearer luteolus, while Gray’s species approaches _ more nearly to radiatus. 3In Latchford’s Notes on Ottawa: Unionida. 536 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. * Unio virginiana LAMARCK, An. sans. Vert., VI, 1819, p. 79.—* DELESSERT, Rec. Coq. Lam., 1841, pl. x11, fig. * Unio lineata VALENCIENNES, Enc. Meth., II, 1827, p. 151, pl. ccxLviu, fig. 5. * Unio elongata GOODRICH, Ill. Nat. Hist., II, 1829, p. 523, fig. * Unio tenebrosus CONRAD, New F. W. Shells, 1834, p. 42, pl. vit, fig. 1; p. 72.— *FERuUSSAC, Guer. Mag., 1835, p. 29.—* MOLLER, Syn. Nov. Gen. 1836, p. 207.— *CHENU, Bib. Conch., Ist ser., III, 1845, pl. u, fig. 5.—* B. H. Wricut, Check List, 1888.—* Pa TEL, Conch. Sam., ITI, 1890, p. 169. * Unio melinus CONRAD, Monog. XI, 1838, p. 101, pl. LV, fig. 1.—SowkERBy, Conch. Icon., XVI, 1868, pl. Lxxxvut, fig. 467. * Unio mellinus Pare, Conch. Sam., III, 1890, p. 159. * Unio boydianus LBA, Pr. Am. Phil. Soc., I, 1840, p. 286; * Tr. Am. Phil. Soc., VIII, 1843, p. 216, pl. xv1, fig. 32; * Obs., III, 1842, p. 54, pl. x v1, fig. 22.—* DE Kay, Zool. of New York, Pt. 5, 1843, p. 189.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1858, p. 245.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 492.—* CHENU, Ill. Conch., 1858, pl. xxxu, figs. 2, 2a, 2b.—* B. H. Wrieut, Check List, 1888.—* PaTEeL, Conch. Sam., II, 1890, p. 146. * Margaron (Unio) boydianus Lma, Syn., 1852, p. 38; 1870, p. 62. * Unio crassus KustER, Conch. Cab. Unio., 1854, p. 113, pl. XxN1J, fig. 5. * Mya oblongata, Woop, Index Test., 1856, p. 199, pl. 1; Supplement, fig. 2. * Unio obliquiradiatus REEVE, Conch. Icon., XVI, 1865, pl. XxIx, fig. 151.—* Pa- TEL, Conch. Sam., III, 1890, p. 161. +LAMPSILIS RADIATUS var. CONSPICUUS Lea. * Unio conspicuus LEA, Pr. Ac. N. Sci. Phila., I, 1872, p. 156; *Jl. Ac. N. Sei. Phila., VIII, 1874, p. 34, pl. x1, fig. 31; *Obs., XIII, 1874, p. 38, pl. x1, fig. 31.—* B. H. Wriaut, Check List, 1888. St. Lawrence drainage; Manitoba; Atlantic region south to North Carolina (var. conspicuus in North Carolina and southern Virginia). Gould! reports L. radiatus from the north shore of Lake Superior, and there is a shell in the U. S. National Museum from the northwest boundary of Wisconsin which is probably this species. +LAMPSILIS HYDIANUS Lea. * Unio hydianus Lua, Tr. Am. Phil. Soc., VI, 1838, p. 14, pl. VI, fig. 14; ~ Obs., II, 1838, p. 14, pl. vi, fig. 14.—* TroscHEL, Arch. fiir Naturg., VII, 1839, p. 234.—* HANLEY, Test. Moll., 1842, p. 192; Biv. Shells, 1843, p. 192, pl. xxim1, fig. 6.—* CaTLow and REEVE, Conch. Nom., 1845, p. 60.—” KusTER, Conch. | Cab. Unio., 1861, p. 201, pl. Lxvun, fig. 2.—* CHENU, II]. Conch., 1858, pl. xvu, fig. 3, 3a, 3b; pl. xxiv, figs. 7, 7a, 7).—* H. and A. ADAMS, Gen. Rec. Moll., I, 1857, p.494.—* SowERBY, Conch. Icon., XVI, 1866, pl. xxxvit, fig. 203.—* B. H. WriGHt, Check List, 1888.—* PacTEL, Conch. Sam., III, 1890, p. 155. * Margarita (Unio) hydianus Lra, Syn., 1836, p. 25; 1838, p. 19. * Margaron (Unio) hydianus Lea, Syn., 1852, p. 28; 1870, p. 44. * Unio placitus LEA, Pr. Am. Phil. Soc., V, 1852, p. 252;? *Tr. Am. Phil. Soc., 1852. p. 279, pl. xxiu1, fig. 38; * Obs.,V, 1852, p. 35, pl. xx1n, fig. 38.—* Conran, Pr. Ac..N. Sei. Phila., VI, 1838, p. 255.—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 494.—* Kuster, Conch. Cab. Unio., 1861, p. 262, pl. LXXxviMI, fig. 2.—*B. H. Wricut, Check List, 1888.—* PaTEL, Conch. Sam., 1890, p. 163. * Margaron (Unio) placitus LEA, Syn., 1852, p.29; 1870, p. 46. Eastern half of Texas; Indian Territory; Arkansas; east to Ala- bama. 1 Agassiz, Lake Superior, p. 245, 2Merely a young hydianus. Nee NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 537 +LAMPSILIS APPROXIMUS Lea.|! * Unio approximus LBA, Pr. Am. Phil. Soc., IV, 1845, p. 164; ~ Tr. Am. Phil. Soc., X, 1848, p.74, pl. v, fig. 13; *Obs., IV, 1848, p. 48, pl. v, fig. 13.—* Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 245.—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 493.—* B. H. Wrieut, Check List, 1888.—* PmTeL, Conch. Sam., III, 1890, p. 144. * Wargaron ( Unio) approximus Lra, Syn., 1852, p. 28; 1870, p. 44. Southern Louisiana; southern Alabama. + LAMPSILIS AFFINIS Lea.? * Unio afinis LEA, Pr. Am. Phil. Soc., V, 1852, p. 251; * Tr. Am. Phil. Soe., 1855, p. 271, pl. X1x, fig. 26; * Obs., V, 1852, p. 27, pl. xrx, fig. 26.—*ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 244.—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 493.—* B. H. Wriacut, Check List, 1888.—* Pret, Conch. Sam., III, 1890, p. 144. Margaron (Unio) afinis LEA, Syn., 1852, p. 27; 1870, p. 42. Louisiana. LAMPSILIS CONTRARIUS Conrad. *Unio contrarius CONRAD, Jl. Ac. Nat. Sci. Phila. I, 1850, p. 276, pl. xuxvuil, fig. 7. Ogeechee River, Georgia. (Locality doubtful.) t+LAMPSILIS CLAIBORNENSIS Lea. Unio claibornensis LEA, Tr. Am. Phil. Soc., VI, 1838, p. 105, pl. XxIv, fig. 115; *Obs., II, 1838, p. 105, pl. xx1v, fig. 115.—* TRoscHEL, Arch. fiir. Naturg., V, 1839, pl. II, p. 237.—* HANLEY, Test. Moll., 1842, p. 192, Biv. Shells, 1843, p. 192, pl. x x1, fig. 26.—* CaTLow and REEVE, Conch. Nom., 1845, p.57.—* Conrap, Pr. Ac. N. Sei. Phila., VI, 1853, p. 246.—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 493.—*CHENU, Ill. Conch., 1858, pl. xxu11, figs.3, 3a, 3b.—* SOWERBY, Conch. Icon., X VI, 1868, pl. LXXx, fig. 357.—* B. H. Wriaut, Check List, 1888.— * PETEL, Conch. Sam., III, 1890, p. 148. * Margarita ( Unio) claibornensis LEA, Syn., 1838, p. 19. *Margaron (Unio) claibornensis Lua, Syn., 1852, p. 28; 1870, p. 44. t* Unio obtusus Lea, Pr. Am. Phil. Soc., I, 1840, p. 287; * Tr. Am. Phil. Soc., VIII, 1843, p. 201, pl. x1, fig. 13; *Obs., IIT, 1842; p. 39, pl. x1., fig. 13.—* Con- RAD, Pr. Ac. N.Sci. Phila., VI, 1853, p. 253.—* H.and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 492.—* CHENU, Ill. Conch. 1258, pl. xxx1, figs. 2, 2a, 2b.— * REEVE, Conch. Icon., XVI, 1865, pl. xxv1, fig. 129.—* PaTEL, Conch. Sam., ITI, 1890, p. 161. *Margaron (Unio) obtusus LEA, Syn., 1852, p. 39; 1870, p. 62. *Unio pallescens LEA,* Pr. Am. Phil. Soc., IV, 1845, p. 164; *Tr. Am. Phil. Soc., X, 1848, p. 79, pl. vit, fig. 20; * Obs., IV, 1848, p. 79, pl. VII, fig. 20.—* Conrab, Pr. Ac. N. Sei. Phila., VI, 1853, p. 254.—*H. and A. ADaMs, Gen. Rec. Moll., 'Probably only a thin, slightly rayed or rayless variety of L. hydianus. 2T doubt if this is distinct from Approximus. 3Dr. Lea places this in the synonymy of Unio lecontianus Lea. I have never seen an authentic shell, but the figure given by Conrad in the Journal seems to me more like Lampsilis obtusus, and I am inclined to think it is a small male specimen of this species having reversed laterals. 4There is only a single specimen in the Lea collection, the type, an old, rather thin, eroded, large shell, in bad condition, but which, I feel sure, is claibornensis. 538 PROCEEDINGS OF THE NATI ONA L MUSEUM. VOL, XXII. II, 1857, p. 494.—* B. H. Wriaut, Check List, 1888.—* PTE, Conch. Sam., III, 1890, p. 162. Margaron (Unio) pallescens LEA, Syn., 1852, p. 27; 1870, p. 43. Gulf drainage of the United States, from the Flint to.the Pearl River. t LAMPSILIS PORPHYREUS Lea.! * Unio porphyreus LEA, Pr. Ac. N. Sci. Phila., V, 1861, p.60; *J1. Ac. N. Sci. Phila., V, 1862, p. 80, pl. x, fig. 228; *Obs., VIII, 1862, p. 34, pl. x, fig. 228.—B. H. WRIGHT, Check List, 1888. Margaron (Unio) porphyreus LEA, Syn., 1870, p. 41. Cahawba and Coosa rivers, Alabama. t LAMPSILIS STRAMINEUS Conrad. * Unio stramineus CONRAD, Am. J1.Sci., XXV, 1834, p. 339, pl. 1, fig. 6; * New F. W. Shells, 1834, p. 71.—* FreRussac, Guer. Mag., 1835, p. 29.—* MOLLER, Syn. Noy. Gen., 1836, p. 198.—* Conrab, Monog., X, 1838, p. 91, pl.L, fig. 1. —*HANLEY, Test. Moll., 1842, p. 209; *Biv. Shells, 1843, p. 209, pl. xx111, fig. 45.—*CaTLow and REEVE, Conch. Nom., 1845, p. 64.—* Conran, Pr. Acad. N. Sci. Phila., VI, 1853, p. 258.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 495.—* SowrRBy, Conch. Icon., XVI, 1866, pl. xxxrx, fig. 217, 1868, pl. Lxxx, fig. 422.—*B. H. Wricut, Check List, 1888.—* Pa&TEL Conch. Sam., III, 1890, p. 168. * Margaritu (Unio) stramineus Lea, Syn., 1836, p. 39; 1838, p. 25. * Margaron ( Unio) stramineus LEA, Syn , 1852, p. 28; 1870, p. 35. Southern Alabama, southern Mississippi. t LAMPSILIS REEVIANUS Lea. * Unio reevianus LEA, Tr. Am. Phil. Soc., X, 1852, p. 272, pl. xx, fig. 28; *Obs., V, 1852, p. 28, pl. xx, fig. 28.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 256. — *H. and A. ADAMS, Gen. Rec. Moll1., II, 1857, p. 494.—* KusrER, Conch. Cab. Unio., 1861, p. 247, pl. LXxx111, fig. 2.—* B. H. WricutT, Check List, 1888. —* P#TEL, Conch. Sam., III, 1890, p. 165. *Margaron (Unio) reevianus Lea, Syn., 1852, p. 28; 1870, p. 44. Louisiana; Texas; Arkansas. + LAMPSILIS POWELLII Lea. *Unio powellit Lea, Pr. Am. Phil. Soc., V, 1852, p. 252; *Tr. Am. Phil. Soc., X, 1853, p. 270, pl. x1x, fig. 25; *Obs., V, 1852, p. 26, pl. x1x, fig. 25..—* CONRAD, Pr. Ac. N. Sei. Phila., VI, 1853, p.255.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 494.—*MusGrave, Phot. Conch., 1863, pl. u, fig. 8.—*Sow- ERBY, Conch. Icon., XVI, 1868, pl. Lxx, fig. 359.—* B. H. WriGuT, Check List, 1888.—* PaTeL, Conch. Sam., III, 1890, p. 164. *Margaron (Unio) powelliti Lua, Syn., 1852, p. 28; 1870, p. 44. Salina and Clinton, Arkansas; Guadalupe River, Texas; Spring River, Kansas (Cragin). ‘Tam a little uncertain as to where this species should be placed, as I have only seen the two specimens in the Lea collection, which are very poor and distorted. The nacre is purple. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 539 (Group of Lampsilis igamentinus.) Shell solid, evenly elliptical, not greatly inflated, with a yellowish green epidermis, with broad, usually broken, dark-green rays; beaks not prominent, sculpture fine, restricted in area, pseudocardinals rather small, stumpy; nacre silvery or rarely pinkish. The female shell is not greatly swollen in the post basal region. +LAMPSILIS LIGAMENTINUS Lamarck.! Unio crassus Say, Nich. Encyc., Il, 1816, pl. 1, fig. 8.—* RAFINESQUE, Ann. Gen. Sci. Brux., V, 1820, p. 293.—* HitpRETH, Am. JI. Sci., XIV, 1828, p. 278, fig. 1. —*FerErRussac, Guer. Mag., 1835, p. 27.—* HANLEY, Test. Moll., 1842, p. 192; * Biv. Shells, 1848, p. 192.—* CaTLow and REEVE, Conch. Nom., 1845, p. 58. —*SowERBY, Conch. Icon., XVI, 1866, pl. XL, fig. 220.—* PaTreL, Conch. Sam., III, 1890, p. 149. * Margarita (Unio) crassus LEA, Syn., 1836, p. 24; 1838, p. 19. * Mya crassa EATON, Zool. Text-Book, 1826, p. 217. *Unio ligamentina LAMARCK, An. sans Vert., VI, 1819, p. 72.—* FERuSSAC, Guer. Mag., 1835, p. 27.—* DesHAYES, An. sans Vert., 2d. ed., VI, 1835, p. 533; 3d ed., II, 1839, p. 668. * Unio ligamentinus KUSTER, Conch. Cab. Unio, 1852, p. 23, pl. 101, fig. 3. —* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 251.—* H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 494.—* CaLkins, Pr. Ottawa Ac, Sci., 1874, p. 43.—* B. H. WRIGHT, Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p. 157.—* Catt, Tr. Ac. Sci. St. Louis, VII, p. 22, pl. xx1. * Margaron (Unio) ligamentinus LEA, Syn., 1852, p.28; 1870, p 43. * Lampsilis ligamentinus BAKER, Moll. Chicago, Pt. 1, 1898, p. 108, pl. xv1.—* Smrru, Bull. U.S. Fish Com., 1899, p. 291, pl. Lx xix. *Unio ellipticus BARNES, Am. JI. Sci., VI, 1823, p. 259, pl. x11, fig. 19 (outline).— * HILDRETH, Am. J]. Sci., XIV, 1828, p. 278. *Mya elliptica EATON, Zool. Text-Book, 1826, p. 219. *Unio carinatus BARNES, Am. JI. Sci., VI, 1823, p. 259, pl. x1, fig. 10. *Mya carinata EATON, Zool. Text-Book, 1826, p. 220. * Unio ellipsarius Say, Am. Conch., VI, 1834. *Unio fasciatus Say, Am. Conch., VI. 1834.—*Conrab, Monog., 1835, p. 3, pl. 1.— * FERUSSAC, Guer. Mag., 1835, p. 27.—* PoTiEz and MICHAUD, Gall. Moll., 1844, 153, pl. Lv1ul, fig. 5.—* KusTEerR, Conch. Cab., 1852, p. 31, pl. v, fig. 3. *Mya gravis Woop, Ind. Test. (Hanley ) 1856, p. 199, pl. 1, fig. 6. *Unio gravis P#®TEL, Conch. Sam., III, 1890, p. 154. * Unio luteolus SOwERBY, Conch. Icon., XVI, 1867, pl. Lviut, fig. 293a, *Unio delodontus SOwERBY, Conch. Ieon., X VI, 1867, pl. LVII, fig. 288. “Unio crassidens SOWERBY, Conch. Icon., XVI, 1868, pl. Lx11, fig. 312. *Unio pictus SOwERBY, Conch. Icon., X VI, 1868, pl. LXU, fig. 3138. *Unio venustus SOWERBY, Conch. Icon., XVI, 1868, pl. LXIv, fig. 326. *Unio upsoni Marsu, Conch., Ex. 1, 1887, p.51.2—B. H. Wriaut, Check List, 1888. 1Say’s name crassus applied to this before that of Lamarck was used by Retzius previously for a European Unio. 2The description was read before the Mercer County, Illinois, Scientific and His- torical Society March 2, 1880. Mr. Marsh had copies of the description published and thinks that the species was described on the records. It was not figured. 540° PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII +LAMPSILIS LIGAMENTINUS var. GIBBUS Simpson. ! * Unio crassus SOWERBY, Conch. Icon., XVI, 1868, pl. xcv, fig. 520. Mississippi River drainage generally; southern Michigan; western New York; Manitoba; Ontario; the variety from the Ohio River southward. +LAMPSILIS ORBICULATUS Hildreth. * Unioorbiculatus HILDRETH, Am. Jl. Sci., XIV, 1828, p. 284.—*HANLEY, Test. Moll., 1842, p. 192; Biv. Shells, 1843, p. 192, pl. xx1, fig. 2.—*CaTLow and REEVE, Conch. Nom., 1845, p. 62.—*ConraD, Pr. Ac. N. Sci., Phila., VI, 1853, p. 254.— *H.and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 494.—* KusTER, Conch. Cab., 1861, p. 216, pl. Lxx1, figs. 3, 4.—*SowrErBy, Conch. Icon., XVI, 1866, pi. XLIV, fig. 239.—*CaALKINS, Pr. Ottawa Ac. Sci., 1874, p. 44.—* B. H. WRIGHT, Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p. 162. * Margarita (Unio) orbiculatus Lna, Syn., 1836, p. 25; 1838, p. 19. * Margaron ( Unio) orbiculatus Lea, Syn., 1852, p. 28; 1870, p. 43. * Unio abruptus Say, Am. Conch., No. II, 1831, pl. xvur.—*ConraD, New F. W. Shells, 1834, p. 67.—*CHENU, Bib. Conch., Ist ser., III, 1845, p. 24, pl. v1, figs. 1, la, 1b.—* DESHAYEsS, An. sans Vert., 2d ed., VI, 1835, p. 555;* 3d ed., II, 1839, p. 674. “ Unio cyclips FERUSSAC, Guer. Mag., 1835, p. 28. * Unio crassus CONRAD, Monog., IV, 1836, p. 34, pl. x v1. Ohio and Cumberland rivers; west to the Mississippi River; north to Minnesota. Some specimens can hardly be separated from JL. higgins. ‘ +LAMPSILIS HIGGINSII Lea.? * Unio higginstt Lua, Pr. Ac. N. Sci. Phila., IX, 1857, p. 84; *J1. Ac. N. Sci. Phila., V, 1862, p. 188, pl. xxiv, fig. 258; *Obs., IX, 1863, p. 10, pl. xxiv, fig. 258.— * SOWERBY, Conch. Icon., XVI, 1868, pl. LXxxu,, fig. 431.—* B. H. WREGHT, Check List, 1888.—* PaTeL, Conch. Sam., III, 1890, p. 155. * Margaron (Unio) higginsti LEA, Syn., !870, p. 41. Ohio River, west to Iowa, and southwest to Kansas. +LAMPSILIS PINGUIS Lea.’ Unio pinguis Lea, Pr. Ac. N. Sci. Phila., I, 1857, p. 84; *J]. Ac. N. Sci. Phila., IV, 1858, p. 78, pl. xv, fig. 58; *Obs., VI, 1858, p. 78, pl. xv, fig. 58.—*B. H. WriGutT, Check List, 1888. * Margaron ( Unio) pinguis Lra, Syn., 1870, p. 44. St. Peters River, Minnesota. Doubtful. 1A peculiarly humped form of ligamentinus, common throughout the southern range of the species, may bear the above name. y 2A somewhat puzzling species, of which male specimens often approach closely to Obovaria ellipsis in form, but the pseudo cardinals are always stumpy and never longi- tudinal, as they generally are in that genus. It is probably an aberrant form, closely related to L. orbiculatus. The females are more inflated in the postbasal region than in any other member of the group. 31 have seen only one specimen of this, the type, which is an exceedingly puzzling form. The hinge line is injured and curves in strongly in front of the beaks, where there is a large, irregular lunnle. and the pseudocardinals are compressed. It may be a young, diseased orbiculatus. NO. 1205. SYNOPSIS OF THE NAJADES—SIMPSON. 5A +LAMPSILIS TAENIATUS Conrad. * Unio teniatus CONRAD, New F. W. Shells, 1834, pp. 26, 72, pl. Iv, fig. 2..—*Frrus- sac, Guer. Mag., 1835, p. 29.—MOLLER, Syn. Nov.Gen., 1836, p. 201.—* HaNLEy, Test. Moll., 1842, p.191; *Biv. Shells, 1843, p. 191.—*CHENU, Bib. Conch., Ist ser., III, 1845, p. 15.—*CaTLow and REEVE, Conch. Nom., 1845, p. 64.—*Con- RAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.—* KusTER, Conch. Cab. Unio, 1862, p. 271, pl. xct, fig. 4.—* B. H. Wriecut, Check List, 1888. *Margarita (Unio) teniatus LEA, Syn., 1836, p. 24; 1838, p. 19. *Unio taniatus PTEL, Conch. Sam., III, 1890, p. 169. *Unio menkianus LEA, Tr. Am. Phil. Soc., V, 1836, p. 76, pl. x1x, fig.59; *Obs., II, 1838, p. 76, pl. x1x, fig. 59.—* TROSCHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 237.—* HANLEY, Test. Moll., 1842, p. 191; * Biv. Shells, 1843, p. 191, pl. x x11, fig. 4.—*CaTLow and REEVE, Conch. Nom., 1845, p.61.—*Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 252.—* CHENU, II]. Conch., 1858, pl. xx, figs. 4, 4a, 4b.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 492.—* Kuster, Conch. Cab. Unio, 1861, p. 245, pl. Lxxxu, fig. 3.—* REEVE, Conch. Icon., XVI, pl. XXVIII, fig. 140.—* B. H. Wricut, Check List, 1888.—* Pa TEL, Conch. Sam., IT, 1890, p. 159. * Margarita (Unio) menkianus LEA, Syn., 1858, p. 19. *Margaron ( Unio) menkianus Lea, Syn., 1852, p. 27; 1870, p. 43. *Unio pulcher Lea, Tr. Am. Phil. Soc., VI, 1838, p. 6, pl. 11, fig. 6; *Obs., II, 1838, p. 6, pl. 11, fig. 6.—*TROSCHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 234.—* Han- LEY, Test. Moll., 1842, p. 193; * Biv. Shells, 1843, p. 193, pl. xxi, fig. 7.—*CatT- LOW and REEVE, Conch. Nom., 1845, ‘:p. 63.—*H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 494.—* CHENU, Il]. Conch., 1858, pl. xvil, figs. 2, 2a, 2b.— *KusTER, Conch. Cab. Unio, 1861, p. 193, pl. LXI, fig. 5.—-*P. H. WRIGHT, Check List, 1888.—* Pa: TEL, Conch. Sam., III, 1890, p. 164. * Margarita (Unio) pulcher LEA, Syn., 1836, p. 25; 1838, p. 19. *Margaron (Unio) pulcher LEA, Syn., 1852, p. 28; 1870, p. 44. *Unio interruptus Lua, Tr. Am. Phil. Soc., VI, 1838, p. 15, pl. v1, fig. 15; *Obs., II, 1838, p. 15, pl. v1, fig. 15.—* HANLEY, Test. Moll., 1842, p. 191; * Biv. Shells, 1843, p. 191, pl. xx1, fig. 28.—* CaTLOow and REEVE», Conch. Nom., 1845, p. 60.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 494.—* CHENU, II. Conch, 1858, pl. XVII, figs. 4, 4a, 4b.—* B. H. WriGut, Check List, 1888. * Margarita (Unio) interruptus LEA, Syn., 1856, p. 24; 1838, p. 19. *Margaron (Unio) interruptus LEA, Syn., 1852, p. 27; 1870, p. 48. *Unio latiradiatus CONRAD, Monog., XI, 1838, p. 96, pl. Lur; Pr. Ac. N. Sci. Phila., VI, 1853, p. 251.—* KusTER, Conch. Cab. Unio, 1861, p. 208, pl. Lxrx, fig. 3.—P#TEL, Conch. Sam., III, 1890, p. 151. *Unio tennesseensis Lka,? Pr. Am. Phil. Soc., I, 1840, p. 288; *Tr. Am. Phil. Soc., VIII, 1843, p. 199, pl. x, fig. 115° *Obs., III, 1842, p. 37, pl. x, fig. 11.—*Conrab, Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.—* H. and A. ADams, Gen. Rec. Moll., II, 1857, p. 495.—*CuHENU, Ill. Conch., 1858, pl. xxvu1, figs. 1, la, 1b.—*B. H. Waricut, Check List, 1888.—* P&TEL, Conch. Sam., III, 1890, p. 169. *Margaron (Unio) tennesseensis LEA, Syn., 1852, p. 27; 1870, p. 43. *Unio perdix REEVE, Conch. Icon., XVI, 1864, pl. x v1tI, fig. 82. Tennessee and Cumberland river systems. 1 Lea places this species in the synonymy of his Unio interruptus, in the Synopsis. The latter was not published until 1838. 2The type is an old female teniatus, very solid, and but slightly rayed. 3Lea states in the above citation that this species has radial beak sculpture. The beaks ot his type are slightly eroded, having the appearance of somewhat rayed ridges, and I have seen the same thing in the eroded beaks of Unio rotundatus Lamarck, bnt it is not true beak sculpture. Many Unios when decomposing exhibit throughout their shells a somewhat radial structure, and that is what is shown in this case. 5A2 PROCEEDINGS OF THE NATIONAL MUSEUM. ot en + LAMPSILIS PICTUS Lea. *Unio pictus LEA, Tr. Am. Phil. Soc., V., 1834, p. 73, pl. x1, fig. 36; * Obs., I, 1834, p. 185, pl. x1, fig. 52.—* FERussac, Guer. Mag., 1835, p. 29.—* HANLEY, Test. Moll., 1842, p. 191; * Biv. Shells, 1843, p. 191, pl. xxin, fig. 35.— *CaTLOW and REEVE, Conch. Nom., 1845, p. 62.—* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 255.—*H. and A. ApAms, Gen. Rec. Moll., II, 1857, p. 494.—* KusTER, Conch. Cab. Unio, 1861, p. 249, pl. Lxxxiu, fig. 5.—* B. H. WriGut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 163. *Murgarita (Unio) pictus Lua, Syn., 1836, p. 24; 1838, p. 19. *Margaron (Unio) pictus LEA, Syn., 1852, p. 27; 1870, p. 43. t *Unio lindsleyi Lea, Pr. Ac. N. Sci. Phila., IV, 1860, p. 306; * Jl. Ac. N. Sci. Phila., 1860, p. 351, pl. Lv, fig. 176; * Obs., VIII, 1860, p. 33, pl. Lvmit, fig. 176.—* SOWERBY, Conch. Icon., XVI, 1866, pl. XLII, fig. 233b.—* B. H. WRIGHT, Check List, 1888.—* ParrL, Conch. Sam., III, 1890, p. 157. *Margaron (Unio) lindsleyi Lua, Syn., 1870, p. 43. *Unio camelopardalis SowERBY, Conch. Icon., XVI, 1866, pl. xu, fig. 233a. Harpeth River, Tennessee. t* LAMPSILIS CAMELOPARDILIS Lea.! *Unio camelopardilis Lea, Pr. Ac. N. Sci. Phila., IV, 1860, p. 92; * Jl. Ac. N. Sci. Phila., IV, 1860, p. 355, pl. LIx, fig. 180; * Obs., VIII, 1860, p. 37, pl. Lrx, fig. 180. —*B. H. Wrieat, Check List, 1888.—-* PasrEL, Conch. Sam., III, 1890, p. 147. * Margaron (Unio) camelopardilis, Lea, Syn., 1870, p. 53. t* Unio fucatus Lea, Pr. Ac. N. Sci. Phila., IV, 1860, p. 92; Jl. Ac. N. Sci. Phila., IV, 1860, p. 353, pl. Lrx, fig. 178; *Obs., VIII, 1860, p.35, pl. L1x, fig. 178.— *B.H. Wrieut, Check List, 1888. *Margaron (Unio) fucatus, LEA, Syn., 1870, p. 438. Tennessee and Cumberland river systems. +LAMPSILIS PUNCTATUS Lea. *Unio punctatus Lua, Pr. Ac. N. Sci. Phila., IX, 1865, p. 89; * Jl. Ac. N. Sci. Phila., VI, 1868, p. 261, pl. xxx, fig. 76; * Obs., XII, 1869, p. 21, pl. xxxu1, fig. 76.—* B. H.WriGut, Check List, 1888. *Margaron ( Unio) punctatus Lna, Syn., 1870, p. 43. Tennessee River drainage. tLAMPSILIS PERDIX Lea. *Unio perdix Lea, Tr. Am. Phil. Soc., V, 1827, p. 72, pl. x1, fig. 31; *Obs., I, 1834, p. 184, pl. x1, fig. 31.—* FErRussac Guer. Mag., 1835, p. 29.—* HaNLEy, Test. Moll., 1842, p. 189; * Biv. Shells, 1843, p. 188, pl. xx, fig. 20.—* CaTLow and REEVE, Conch. Nom., 1845, p. 62.—* H. and A. Apams, Gen. Rec. Moll. I, 1857, p. 494.—* SOwERBY, Conch. Icon., XVI, 1868, pl. Lx1x, fig. 82.—*B. H. Wriaut, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 163. * Margarita (Unio) perdix LEA, Syn., 1836, p. 23; 1838, p. 18. *Margaron (Unio) perdix Lea, Syn., 1852, p. 26; 1870, p. 41. ’ *Unio pectorosus CONRAD, New F. W. Shells, 1834, p. 37, pl. vi, fig. 1, p. 71.— * FERUSSAC, Guer. Mag., 1835, p. 29.—*CoNRAD, Monog. III, 1836, p. 25, pl. XI, fig. 1.—* MOLLER, Syn. Nov. Gen., 1836, p. 205.—* HaNnLEyY, Test. Moll., 1842, p. 189; * Biv. Shells, 1843, p. 189, pl. x x1, fig. 22.—* CuENU, Bib. Conch., Ist ser., HII, 1845, p. 19, pl. 11, fig.8.—*CatTLow and REEVE, Conch. Nom., 1845, p. 62.—KusTeER, Conch. Cab. Unio, 1852, p. 26, pl. 1v, fig. 2.—* Conrap, ‘It is quite probable that this and the preceding species are merely varieties of the same thing. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 543 Pr. Ac. N. Sci. Phila., VI, 1853, p. 254.—* B. H. Wriegar, Check List, 1888.— *PaTEL, Conch. Sam., III, 1890, p. 162. “Margarita (Unio) pectorosus LEA, Syn., 1836, p. 25, 1838, p. 18. Tennessee and Cumberland river systems. t LAMPSILIS BRACTEATUS Gould. “Unio bracteatus GOULD, Pr. Bost. Soc. N. Hist., V, 1855, p. 228; *Otia Conch., 1862, p. 217.—* B. H. Wrient, Check List, 1888. *Margaron (Unio) bracteatus Lea, Syn., 1870, p. 43. Llanos, Guadalupe, and Colorado rivers, Texas. +LAMPSILIS VENUSTUS Lea. - *Unio venustus LEA, Tr. Am. Phil. Soc., VI, 1838, p. 4, pl. m1, fig. 4; *Obs., II 1838, p. 4, pl. 1, fig. 4. —* TroscuEtL, Arch. fiir. Naturg., V, 1839, II, p. 233.— * HANLEY, Test. Moll., 1842, p. 192; * Biv. Shells, 1843, p. 192, pl. xx111, fig. 5.— *CaTLOw and REEVE, Conch. Nom., 1845, p. 65.—* Conrab, Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.—* CuENu, Ill. Conch., 1858, pl. xx, figs. 1, La, 1b.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 495.—* B. H. Wriaur, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 171.—* CaLL, Tr. Acad. Sci. St. Louis, 1895, p. 57. *Margarita (Unio) venustus LEA, Syn., 1836, p. 24; 1838, p. 19. *Margaron (Unio) venustus LEA, Syn., 1852, p. 27; 1870, p. 43. Potosi, Missouri. (Group of Lampsilis anodontoides.) Shell elongated, inflated, moderately solid, sharply pointed behind; that of the female much produced at the posterior base, behind which it is diagonally truncate; epidermis very bright, smooth and shining, but feebly rayed; beaks not prominent, marked with very delicate regular sculpture, the posterior loop often open behind; pseudocardi- nals smooth, generally compressed; nacre shining, white or purplish. Animal with the marsupium very distinct and well rounded below; inner edge of the mantle usually beautifully and evenly toothed behind. tLAMPSILIS ANODONTOIDES Lea. t* Unio anodontoides Lea, Tr. Am. Phil. Soc., IV, 1834, p. 81, pl. vin, fig. 11; * Obs., 1, 1834, p. 91, pl. vii, fig. 11.—* HANLEY, Test. Moll., 1842, p. 204.— *CaTLow and REEVE, Conch. Nom., 1845, p.55.—* CHENU, IIL. Conch., 1858, pl. XIV, figs. 3, 3a, 3b.—* REEVE, Conch. Icon., XVI, 1865, pl. XIx, fig. 87.—* B. H. WriGut, Check List, 1888.—* Simpson, Proc. U. 8. Nat. Mus., XV, 1892, p. 430, pl. LXXI, fig. 7; LXXx1I, figs. 1,2, 4. *Margarita (Unio) anodontoides LEA, Syn., 1836, p. 35; 1838, p. 24. *Maryaron (Unio) anodontoides LEA, Syn., 1852, p. 86; 1870, p. 58. “Lampsilis anodontoides BAKER, Moll. Chicago, Pt. 1, 1898, p. 100, pl. x, figs. 1, 2.—* SMITH, Bull. U.S. Fish Com. 1899, p. 290, pl. LXxvitt. *? Unio teres Say, Am. Conch., VI, 1834.'\—* Conrab, New F. W. Shells, 1834, p. 72; Monog. VI, 1836, p. 52, pl. xxvill.—* FERUSSAC, Guer. Mag., 1835, p. 27.— *ConrRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 259.—* KusTER, Conch. Cab. Unio, 1854, p. 68, pl. xvit,figs. 1, 4. 1 Said to be of Rafinesque, 1820. I can not be positive whether Rafinesque’s descrip- tion is of a young shell of this species or the fallaciosus. He gives its length as 3 inches. I therefore use the name applied by Lea, his shell being properly described and figured. 544 PROCEEDINGS OF THE NATIONAL MUSEUM, ~~ [vou. xxi +LAMPSILIS ANODONTOIDES var. FLORIDENSIS Lea. *Unio floridensis Lka,! Tr. Am. Phil. Soc., X, 1852, p. 274, pl. Xx1, fig. 31; ~ Obs., V, 1852, p. 30, pl. xxi, fig. 31.—* ConraD, Pr. Ac. N. Sci., Phila., VI, 1853, p. 249.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 492._*B. H. Wriaut, Check List, 1888.—* Parer, Conch. Sam., III, 1890, p. 152. *Margaron (Unio) floridensis LEA, Syn., 1852, p. 39; 1870, p. 62. Entire Mississippi River drainage except (probably) the upper Mis- souri. All the Gulf drainage from the Withlacoochee River, Florida, to the Rio Grande, and into Mexico. + LAMPSILIS FALLACIOSUS (Smith) Simpson. *Unio anodontoides REEVE, Conch. Icon., XVI, 1865, pl. xx1, fig. 97.—* CALKINS, Pr. Ottawa Acad., 1874, p. 41. *Lampsilis anodontoides BAKER, Moll. Chicago, Pt. 1, 1898, pl. x, fig. 3.° *Unio oriens SOowERBY, Conch. Icon., 1868, pl. LXIH, fig. 314. * Lampsilis fallaciosus SmirH, Bull. U. 8S. Fish Com., 1899, p. 291, pl. LXx1x.— _*§mreson, Pr. Ac. N. Sci., Phila., 1900, p. 74, pl. u1, fig. 5. Upper Mississippi drainage; south to the Cumberland River, Ten nessee, and to Arkansas; Red River of the North? +LAMPSILIS VIRESCENS Lea.* * Unio virescens Lra, Pr. Ac. N. Sci., Phila., II, 1858, p. 40; * Jl. Ac. N. Sei., Phila., IV, 1860, p. 341, pl. LV, fig. 166; * Obs., VIII, 1860, p. 23, pl. Lv, fig. 166.—* B. H. Wrieut, Check List, 1888. * Margaron (Unio) virescens LEA, Syn., 1870, p. 42. Tennessee River in northern Alabama. +LAMPSILIS AUSTRALIS Simpson. * Lampsilis australis Simpson,® Pr. Ac. N. Sci., Phila., 1900, p. 75, pl. 11, fig. 2. Little Patsaliga Creek, southeastern Alabama. +LAMPSILIS RECTUS Lamarck. * Unio recta LAMARCK, An. sans Vert., VI, 1819, p. 74.—* VALENCIENNES, Rec. Obs. Zool., II, 1833, p. 234, pl. Lrv, fig. 1.—* DESHAYEs, An. sans Vert., 2d ed., VII, 1835, p. 537; 3d ed., II, 1889, p. 669. —— — 1 Lampsilis anodontoides becomes thinner and more delicate in the waters of the eastern Gulf drainage, and in Florida assumes the form called by Lea Unio floridensis. The type of the latter is not in the Lea collection. 2¥Figured and the name (supplied by the writer) given by Smith in Bull. U.S. Fish Commission, but not described. 3As this species has generally been confounded with the very closely allied L. ano- dontoides of Lea, it is a little difficult to be certain in all cases which form authors have referred to. 4A species which seems to combine some of the characters of L. anodontoides and cariosus, but which probably shonl| e placed here. > This species seems to stand partly between L. rectus and L. anodontoides. In the character of color both of nacre and epidermis the former is quite widely separated from the latter, though specimens of rectus from Michigan and other northern local- ities sometimes have a tawny epidermis. In L. australis the nacre is silvery, and the color of the epidermis approaches to some extent that of anodontoides. eee, No. 1205. SYNOPSIS OF THE NALADES—SIMPSON. 5A5 “Unio (Ligumia) recta SWAINSON, Treat. on Mal., 1840, pp. 267, 274, fig. Ly. Unio rectus SHORT and Eaton, Transylvania J1., 1831, p.77.—* Conran, New F. W. Shells, 1834, p. 71.—*Say, Am. Conch., VI, 1834.—* FrERussac, Guer. Mag., 1835, p. 27.—*ConraD, Monog., ITI, 1836, p. 33, pl. xv.—* Han Ey, Test. Moll., 1842, p. 204.—* C. B. ADams, Thompson’s Hist. of Vt., 1842, p.167; *F.W. and L. Sh. of Vermont, 1842, p. 17.—* HANLEY, Biv. Shells, 1843, p. 204.— *Dr Kay, Zool. of N. Y., Pt. 5, 1843, p. 195.—* Porirez and MicHaup, Gall. Moll., 1844, II, p. 149, pl. tv, figs. 8, 4.—* CaTLow and REEVE, Conch. Nom., 1845, p. 63.—* KusTER, Conch. Cab, Unio, 1852, p. 35, pl. vi, fig. 1; vu, fig. 1.—*ConraD, Pr. Ac. N. Sci., Phila., VI, 1853, p. 256.—* H. and A. ADAMs, Gen. Ree. Moll., II, 1857, p. 491.—* CuENu, Man., 1859, II, p. 189, fig. 675.— REEVE, Conch. Icon., XVI, 1865, pl. X1x, fig. 86.—* CALKINS, Pr. Ottawa Ac., 1874, p. 44.—* LaTcurorn, Tr. Ottawa F. N. Club, 1882, p. 50.—* B. H. WRIGHT, Check List, 1888.—* Pa:TEL, Conch. Sam., III, 1890, p. 165.—* Ca, Tr. Ac. Sci., St. Louis, VII, 1895, p. 43, pl. vir. * Margarita (Unio) rectus LBA, Syn., 1836, p. 34; 1838, p. 23. *Margaron ( Unio) rectus LEA, Syn., 1852, p. 35; 1870, p. 57. *Lampsilis rectus SM1rH, Bull. U.S. Fish Com., 1899, p. 290, pl. LXxvilt. t* Unio latissimna RAFINESQUE, Ann. Gen. Sci. Phys. Brux., Pt. 13, V, 1820, p. 297, pl. Lxxx, figs. 14, 15. *?2Unio prelongus BARNES,’ Am. Jl. of Sci., VI, 1823, p. 261, pl. x11, fig. 11.— * HILDRETH, Am. JI. of Sci., XIV, 1828, p. 286, fig. 18. * Mya prelonga Karon, Zool. Text-Book, 1826, p. 220.—Woop, Ind. Test (Han- ley), 1856, p. 200, pl. 1, Supp., fig. 11. * Hurynea prelonga STIMPSON, Shells of N. Eng., 1851, p. 13. t* Unio sageri CONRAD, Monog., VI, 1836, p. 53, pl. XXIX, fig. 1. * 2Unio arquatus? CoNnRaD, J]. Ac. Nat. Sci. Phila., 1854, p. 297, pl. xxv1, fig. 8.— B. H. Wrieut, Check List, 1888. Entire Mississippi drainage; Alabama River drainage; Red River of the North; St. Lawrence system. DeCamp’s Unio anodontoides, reported from Michigan, is a tawny colored variety of this species according’ to Walker. (Group of Lampsilis nasutus.) Shell elongated, thin, compressed, with a distinct posterior ridge, and drawn out to a long, pointed beak behind; epidermis rather dull, olive green, and feebly rayed; beaks low, sculptured with fine, close-set ridges, which are slightly looped in front and are parallel with the axis of the shell behind; hinge teeth delicate and compressed; nacre bluish; female shell not greatly produced in the post-basal region. Animal with the marsupium often occupying the greater part of the length of the outer gills posteriorly; inner gills free or united to the, abdomi- nal sac. +LAMPSILIS NASUTUS Say. Unio nasutus Say, Nich. Encyc., 1st ed., 1816, pl. rv, fig. 1.—* Swainson, Zool. IIl., Istser., 1,1821, pl. Lvir.—*CoNnRAD, New F. W. Shells, 1834, p. 70.—*FERUSSAC, Guerin Mag., 1835, p. 26.—* ConraD, Monog., IV, 1836, p. 38, pl. xvim, fig. 1, 1Barnes only gives an outline of his shell, which appears to me more like his U. gibbosus than rectus. However in deference to the opinions of Hildreth, Lea, and others, I place it in the synonymy of L. rectus. Hildreth’s description answers fairly well to rectus, and it was submitted to Barnes for his inspection. 2Lea believes this to be a distorted rectus. I am not quite certain of it. Proce. N. M. vol. xxii 3D 546 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. 1870, p. 169, fig. 473.—-* HanLEY, Test. Moll., 1842, p. 206.—* Dr Kay, Zool. of N. Y., Pt. 5, 1843, p. 191, pl. xx, fig. 239.—* HANLEY, Biv. Shells, 1843, p. 206.— CaTLow and REEVE, Conch. Nom., 1845, p. 61.—*Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 252.—* H. and A. ApAms, Gen. Ree. Moll., II, 1857, p. 491.— *KusTER, Conch. Cab. Unio, 1861, p. 223, pl. Lxxy, fig. 4.—* REEVE, Conch. Icon., X VI, 1865, pl. xx1, fig. 94.—* HarTMAN and MICHENER, Conch. Cest., 1874, p. 70, fig. 186.—*B. H. Wrieur, Check List, 1888.—*H. CARPENTER, Naut., III, 1889, p. 94.—* PasTEL, Conch. Sam., ITI, 1890, p. 160. * Margarita (Unio) nasutus LEA, Syn., 1836, p. 37; 1838, p. 24. * Margaron (Unio) nasutus LEA, Syn., 1852, p.37; 1870, p. 60. *Unio nasuta LAMARCK, An. sans Vert., VI, 1819, p. 75.—* DesHayes, An. sans Vert., 2d ed., VI, 1835, p.538; 3d ed., II, 1839, p. 669.—* Hanury, Test. Moll., 1842, p. 208; *Biv. Shells, 1843, p. 208. *Mya nasuta EATON, Zool. Text-Book, 1826, p. 218.—* Woop, Index Test.(Hanley), 1856, p. 199, pl. 1, Supp., fig. 4. *Eurynea nasuta AGASSIZ, Shells of New Eng., 1851, p. 13; Arch. fiir Naturg., I, 1852, p. 45. * Unio rostrata VALENCIENNES, Rec. Obs. Zool., II, 1833, p. 233, pl. Lil, fig. 3. * Unio vaughanianus SowERBY, Conch. Icon., XVI, 1868, pl. LXI, fig. 508. St. Lawrence drainage; streams flowing into the Atlantic south to North Carolina. (Group of Lampsilis subrostratus.) Shell elliptical to elongate, distinctly pointed behind, the point well above the middle of the height, that of the female conspicuously swollen at the posterior base and obliquely truncated behind; epider- mis varying from olive to brown, generally more or less rayed and slightly roughened; beaks not prominent, sculptured with fine, deli- cate, parallel bars, which are somewhat looped in front and generally descend obliquely behind; pseudocardinals usually compressed; nacre bluish to purple. Animal with inner gills often more or less free from the abdominal sac; posterior base of mantle of female generally toothed. +LAMPSILIS SUBROSTRATUS Say. Unio subrostratus Say, N. Harmony Diss., Jan. 15,1831; “Am. Conch., VI, 1834.— *ConraD, New F. W. Shells, 1834, p. 72.—* FeRussac, Guer. Mag., 1835, p. 26.—* L. W. Say, Terr. and Fluv, Sheils, 1840, p.7.—* CoNRaD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.—Kusrer, Conch. Cab., 1861, p. 203, pl. LX viI.— *LEwis, Pr. Ac. N. Sci. Phila., VIII, 1878, p. 273.—* Cau, Am. Nat., XIII, p. 392.—* B. H. Wrieur, Check List, 1888.—* ParEL, Conch., Sam., III, 1890, p. 168. - * Unio nashvillianus Lea, Tr. Am. Phil. Soc., V, 1834, p. 100, pl. xtv, fig. 43; *Obs., I, 1834, p. 212, pl. xiv, fig. 43.—* FrrRussac, Guer. Mag., 1835, p. 29.— *HANLEY, Test. Moll., 1842, p.193; Biv. Shells, 1843, p. 193, pl. x x11, fig. 31.— *CaTLow and REEVE, Conch. Nom., 1845, p. 61.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 252.—* Kuster, Conch. Cab. Unio, 1861, p. 224, pl. Lxxv1, figs. 1, 2.—SowrErpv, Conch. Icon., X VI, 1866, pl. Xxx, fig. 158.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 494.—* B. H. Wrient, Check List, 1888.--* PH#TEL, Conch. Sam., III, 1890, p. 160. ' Conrad gives three figures under fig. 1. The first and second are U. fisherianus; the third is a female nasutus. On — =] NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON, *Margarita (Unio) nashvillianus Lua, Syn., 1856, p. 26; 1838, p. 20. *Margaron ( Unio) nashvilianus LKa, Syn., 1852, p. 29. *Margaron (Unio) nashvilliensis LEA, Syu., 1870, p. 45. t* Unio mississippiensis CONRAD, Jl. Ac. N. Sci. Phila., I, 1850, p. 277, pl. xxxvu, fig. 11.—*Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 252.—*H. and A. ADAMS, Gen. Rec. Moll, II, 1857, p. 494.—* Kuster, Conch. Cab. Unio, 1861, p. 245, pl. LXXXII, fig. 3.—* REEVE, Conch. Icon., XVI, 1865, pl. x1x, fig. 85.— *B. H. Wricut, Check List, 1888.—* PareL, Conch. Sam., III, 1890, p. 159. *Margaron ( Unio) mississippiensis LEA, Syn., 1852, p. 29; 1870, p. 60. *Unio rutersvillensis LEA, Pr. Ac. N. Sci. Phila., III, 1859, p.155; “Jl. Ac. N. Sei. Phila., IV, 1860, p. 355, pl. Lx, fig. 181; *Obs., VIII, 1860, p. 38, pl. Lx, fig. 181.—* B. H. Wrieut, Check List, 1888. *Margaron (Unio) rutersvillensis LEA, Syn., 1870, p. 43. t* Unio topekaensis Lea, Pr. Ac. N. Sci. Phila., XII, 1868, p. 144; *JI. Ac. N. Sci. Phila., VI, 1869, p. 313, pl. xxix, fig. 126; *Obs., XII, 1869, p. 73, pl. xurx, fig. 126.—* B. H.Wricut, Check List, 1888. *Margaron ( Unio) topekaensis LEA, Syn., 1870, p. 43. * Unio cocoduensis REEVE, Conch. Icon., XVI, 1865, pl. 24, fig. 117. Entire Mississippi drainage north to about latitude 41°. Eastern half of Texas. +* LAMPSILIS LIENOSUS Conrad. *Unio lienosus CONRAD, Am. Jl. Sci., XXV, 1834, p. 339, pl. 1, fig. 4; *New F. W. Shells, 1834, p. 70.—* FERuUSSAC, Guer. Mag., 1835, p. 25.—* ConrRaD, Monog. VII, 1836, p. 60, pl. Xxxt1v, fig. 2.—* MOLLER, Syn. Nov. Gen., 1836, p. 197.—*HANLEY, Test. Moll., 1842, p.194; *Biv. Shells, 1843, p. 194, pl. xx1, fig. 32.—*CaTLow and REEVE, Conch. Nom., 1845, p. 60.—* KusTER, Conch. Cab. Unio, 1852, p. 67, pl. xvi, fig. 3.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 251.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 494.—* SowErsy, Conch. Icon., XVI, 1866, pl. xxxu1, fig. 166; 1868, pl. Lxxv, fig. 388.—* B. H. Wriacut, Check List, 1888.—* Paret, Conch. Sam., III, 1890, p. 157. * Margarita (Unio) lienosus LEA, Syn., 1836, p. 26; 1838, p. 20. *Margaron (Unio) lienosus LEA, Syn., 1852, p. 29; 1870, p. 45. *Unio saxeus CONRAD, Monog., XII, 1840, p. 109, -pl. Lx, fig. 1; Pr. Ac. N. Sci. Phila., VI, 1853, p. 257.—* H. and A. ADamMs, Gen. Ree. Moll., I, 1857, p. 494.— *B. H. Wrieut, Check List, 1888.—* Pa:TEL, Conch. Sam., III, 1890, p. 166. *Margaron ( Unio) saxeus Lea, Syn., 1852, p. 27; 1870, p. 42. “Unio caliginosus LEA, Pr. Am. Phil. Soc., IV, 1845, p. 165; *Tr. Am. Phil. Soc., X, 1848, p. 79, pl. vu, fig. 21; *Obs., IV, 1848, p. 53, pl. v1, fig. 21.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 246.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 493.—* KusTER, Conch. Cab. Unio, 1861, p. 180, pl. Lv1, fig. 7.— *B. H. WRIGHT, Check List, 1888.—* PasrEL, Conch. Sam., III, 1890, p. 147. *Margaron ( Unio) caliginosus LEA, Syn., 1852, p. 29; 1870, p. 45. *Unio fontanus CONRAD,' Am. Jl. Sei., Il, 1866, p. 279, pl. xv, fig. 13.—* B. H. WRIGHT, Check List, 1888. LAMPSILIS LIENOSUS var. UNICOSTATUS B. H. Wright. *Unio unicostatus B. H. WRIGHT, Naut., XIII, 1899, p. 69. Lower Mississippi River drainage north to the lower Ohio; east to southwest Georgia. 1'The characters are poor in the indifferent type in the Academy of Natural Sciences in Philadelphia, but I believe that it is a Lampsilis lienosus. 548 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL. XXII. +LAMPSILIS CONCESTATOR Lea. *Unio concestator Lea, Pr. Ac. N. Sci. Phila., IX, 1857, p. 31; *Jl. Ac. N. Sci. Phila., [V, 1858, p. 66, pl. xu, fig. 48; *Obs., VI, 1858, p. 66, pl. xu, fig. 48.— *KusTER, Conch. Cab. Unio, 1861, p. 178, pl. Lvt, fig. 3.—* REEVE, Conch. Icon., XVI, 1865, pl. xxvi, fig. 128.—*B. H. Wricut, Check List, 1888.— *PmeTEL, Conch. Sam., III, 1890, p. 148.—*Srmpson, Pr. U. S. Nat. Mus., XVI, 1892, p. 416, pl. Lvi0, figs. 2-4. “* Margaron (Unio) concestator LEA, Syn., 1870, p. 45. t* Unio intercedens LA, Pr. Ac. N. Sci. Phila., IX, 1857, p.32; *J1. Ac. N. Sci. Phila., IV, 1858, p. 77, pl. xv, fig. 57; * Obs., VI, 1858, p. 77, pl. xv, fig. 57.—* B. H. Wricut, Check List, 1888.—* PTE, Conch. Sam., ITT, 1890, p. 155. * Margaron (Unio) intercedens Lua, Syn., 1870, p. 45. t* Unio fallax Lea, Pr. Ac. N. Sci. Phila., 1X, 1857, p. 32; “Jl. Ac. N. Sei. Phila., IV, 1858, p. 79, pl. Xv, fig. 59; *Obs., VI, 1858, p. 79, pl. xv, fig.59.—* KUSTER, Conch. Cab. Unio, 1861, p. 206, pl. Lx vin, fig. 7.—* SowERBy, Conch, Icon., XVI, 1868, pl. Lxxx, fig. 418.—* B. H. WricHT, Check List, 1888.—* Pa7TEL, Conch. Sam., III, 1890, p. 152. * Margaron (Unio) fallax L¥A Syn., 1870, p. 45. +* Unio contiguus LEa,' Proc. Ac. N. Sci. Phila., VI, 1861, p. 392; * JI. Ac. N. Sci. Phila., V, 1862, p. 199, pl. xxv1i, fig. 268; Obs., IX, 1863, p. 21, pl. xxvin, fig. 268.—B. H. Wricut, Check List, 1888.—P TEL, Conch. Sam., III, 1890, p. 148. * Margaron (Unio) contiguus LEA, Syn., 1870, p. 45. *Unio bi-caelatus REEVE, Conch. Icon., XVI, 1865, pl. xxv1, fig. 130.—* P&TEL, Conch. Sam., III, 1890, p. 146. t* Unio genuinus Lama, Pr. Ac. N. Sci. Phila., XX, 1868, p. 161; *J1. Ac. N. Sei. Phil., VI, 1868, p. 305, pl. xivi, fig. 117; *Obs., XII, 1869, p. 64, pl. xLv1, fig. 117.— *B. H. Wrieuat, Check List, 1888. * Margaron (Unio) genuinus Lea, Syn., 1870, p. 45. North Carolina. in streams flowing into the sea, to Louisiana, and possibly to Texas. Some specimens are very close to lienosus. LAMPSILIS PROPRIUS Lea.? * Unio proprius Lua, Pr. Ac. N. Sci. Phila., IX, 1865, p. 89; *Jl. Ac. N. Sei. Phila., VI, 1869, p. 256, pl. xxx1, fig. 70; *Obs., XII, 1869, p. 16, pl. xxx1, fig. 70.— *B. WH. Wrieut, Check List, 1888. * Margaron (Unio) proprius LEA, Syn., 1870, p. 45. * Unio striatus SowERBY, Conch. Icon., X VI, 1868, pl. Lxxvui, fig. 407. Walker County, Georgia; Clinch River, Virginia. LAMPSILIS PUNICEUS Haldeman. *Unio puniceus HALDEMAN,® Jl. Ac. N. Sci. Phila., VIII, 1842, p. 201.—Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 255.—B. H. Wricut, Check List, 1888. *Margaron (Unio) puniceus LEA, Syn., 1870, p. 46. Holston River, Tennessee. 1A large rather thin L. concestator, I think. 2Possibly distinct, but more likely a mere light-colored variety of L. Vanuxemensis. 31 believe that this species has never been figured. From the description I should judge that it belonged in this group, and it may be synonymous with some one of its species. pes! No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 549 + LAMPSILIS VANUXEMENSIS Lea. “Unio vanuxemensis LEA, Tr. Am. Phil. Soc., VI, 1838, p. 36, pl. x1, fig. 31; *Obs., II, 1838, p. 36, pl. x1, fig. 31.—* TRoscuHEL, Arch. fiir Naturg, V, 1839, Pt. 2, p. 436.—* HANLEY, Test. Moll., 1842, p.193; * Biv. Shells, 1843, p. 193, pl. xx11, fig. 56.—* CarLow and REEVE, Conch. Nom., 1845, p. 65.— * CHENU, Ill. Conch., 1858, pl. XIX, figs. 3, 3a, 3b.—*H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 495.—*~ KUSTER, Conch. Cab. Unio, 1862, p. 272, pl. xct, fig. 6.—* P&TEL, Conch. Sam., III, 1890, p. 171. *Margarita (Unio) vanuxemensis LEA, Syn., 1836, p. 26; 1838, p. 19. *Margaron (Unio) vanuxemensis LEA, Syn., 1852, p. 29. *Unio vanuxemensis CONRAD, Pr. Ac. N. Sci. Phila., 1853, p. 259. *Margaron (Unio) vanuxemii LEA, Syn., 1870, p. 46. *Unio vanuxemit B. H. WRIGHT, Check List, 1888. t* Unio nitens La, Pr. Am. Phil. Soc., I, 1840, p. 288; *Tr. Am. Phil. Soc., VIII, 1843, p. 205, pl. xu, fig. 19; *Obs., ITI, 1842, p. 43, pl. xu, fig. 19.—* Conran, Pr. Ac. N. Sci. Phila., VI, 1853, p. 253.—* KusTER, Conch. Cab., 1856, p. 163, pl. XLVU, fig. 1.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 498.—* CHENU, Ml. Conch., 1858, pl. xxviu, figs. 5, 5a, 5b.—* REEVE, Conch. Icon. XVI, 1865, pl. xxvil, fig. 144.—*B. H. Wricut, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 161. ; *Margaron (Unio) nitens Lira, Syn., 1852, p. 29; 1870, p. 45. t* Unio umbrans LEA, Pr. Ac. N. Sci. Phila., I, 1857, p.104; *Jl. Ac. N. Sci. Phila., V, 1858, p. 72, pl. x11, fig.53; *Obs., VI, 1858, pl. xm, fig. 53.—*SowERBy, Conch. Icon., XVI, 1866, pl. xxxrv, fig. 179.—* B. H. Wricut, Check List, 1888.—* Pa TEL, Conch. Sam., IIT, 1890, p. 171. * Margaron (Unio) wmbrans LEA, Syn., 1870, p. 45. t Unio tenebricus Lra, Pr. Ac. N. Sci. Phila., EX, 1857, p. 171; *Jl. Ac. N. Sci. Phila., TV, 1858, p. 83, pl. xvu, fig. 63; *Obs., VI, 1858, p. 83, pl. xvi, fig. 63.—* B. H. Wriacut, Check List, 1888. * Margaron (Unio) tenebricus Lr, Syn., 1870, p. 45. t * Unio pybastt Lua, Pr. Ac. N. Sci. Phila., II, 1858, p. 40; *Jl. Ac. N. Sci. Phila., V, 1862, p. 67, pl. v1, fig. 216; *Obs., VIII, 1862, p. 71, pl. v1, fig. 216.—*B. H. Wricut, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 164. * Margaron (Unio) pybasit Lea, Syn., 1870, p. 45. t* Unio fabaceus LEA,! Proc. Ac. N. Sci. Phila., V, 1861, p. 38; *Jl. Ac. N. Sci. Phila., V, 1862, p. 90, pl. x11, fig. 238; *Obs., VIII, 1862, p. 94, pl. xm, fig. 238.—* B. H. Wricut, Check List, 1888. * Margaron (Unio) fabaceus LEA, Syn., 1870, p. 46. t* Unio copet LEA,” Pr. Ac. N. Sci. Phila., XII, 1868, p. 144; *J1. Ac. N. Sci. Phila., VI, 1869, p. 307, pl. xLvu, fig. 120; * Obs., XII, 1869, p. 67, pl. xLvu, fig. 120.— *B. H. WriGcut, Check List, 1888. “ Margaron (Unio) copet LEA, Syn., 1870, p. 45. t * Unio dispansus Lea, Pr. Ac. N. Sci. Phila., I, 1871, p.191; *Jl. Ac. N. Sci. Phila., VIII, 1874, p. 19, pl. vi, fig. 16; *Obs., XIII, 1874, p. 23, pl. vi, fig. 16.—* B. H. WRIGHT, Check List, 1888. Cumberland and Tennessee river systems; headwaters of the Coosa. +LAMPSILIS OBSCURUS Lea. “Unio obscurus LEA, Tr. Am. Phil. Soc., VI, 1839, p. 7, pl. 111, fig. 7, *Obs., II, 1838, p. 7, pl. u1, fig. 7.—* TRoscHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 234.— * HANLEY, Test. Moll., 1842, p. 194; * Biv. Shells, 1843, p. 194, pl. xx11, fig. 58.— 1A small, rather short form of vanuxremensis. > The type is rather thin and high, but is no doubt a mere variation of the above species. 550 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. *CaTLow and REEVE, Conch. Nom., 1845, p. 61.—* CHENU, II]. Conch., 1858, pl. Xvu, figs. 1, la, 16.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 494.— *KustTer, Conch. Cab. Unio, 1861, p. 220, pl. Lxxtv, fig. 3.—* PATEL, Conch. Sam., III, 1890, p. 161. *Margarita (Unio) obscurus LEA, Syn., 1836, p. 26; 1838, p. 20. *Margaron (Unio) obscurus LE, Syn., 1852, p. 29; 1870, p. 45. * Margarita (Unio) zeiglerianus LEA, Syn., 1836, p. 26; 1838, p. 20. * Unio zeiglerianus LEA, Tr. Am. Phil. Soc., VI, 1838, p. 32, pl. x, fig. 27; * Obs., I], 1838, p. 32, pl. x, fig. 27.—~* TROSCHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 235.— *HANLEY, Test. Moll., 1842, p. 193, * Biv. Shells, 1843, p. 193, pl. xx, fig. 57.— *CaTLow and REEVE, Conch. Nom., 1845, p. 65.—*H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 495.—* CuENU, Ill. Conch., 1858, pl. xxiv, figs. 2, 2a, 2b.—* SOWERBY, Conch. Icon., XVI, 1866, pl. xxxv1, fig. 19.—* B. H. Wri1GuT, Check List, 1888.—P TEL, Conch. Sam., ITI, 1890, p. 172. * Margaron ( Unio) zeiglerianus LEA, Syn., 1852, p. 29; 1870, p. 45.1 Tennessee and Cumberland river systems; Lower Ohio and its tribu- taries. +LAMPSILIS PRATTII Lea. *Unio prattii Lna, Pr. Ac. N. Sci. Phila., II, 1858, p. 166; *J1. Ac. N. Sci. Phila., IV, 1859, p. 206, pl. xxIv, figs. 88, 88a; *Obs., VII, 1859, p. 24, pl. XxIv, fig. 88.—* B. H. WRIGHT, Check List, 1888. * Margaron (Unio) prattii Lea, Syn., 1870, p. 45. Chattahoochee River, Georgia. +LAMPSILIS VAUGHANIANUS Lea. * Margarita (Unio) vaughanianus LEA, Syn., 1836, p. 39;° 1838, p. 25. *Unio vaughanianus Lea, Tr. Am. Phil. Soc., VI, 1838, p. 5, pl. 11, fig. 5; *Obs., II, 1838, p. 5, pl. 111, fig. 5.—* TROSCHEL, Arch. fiir Naturg., V, 1839, Pt. 2. p. 234.—* HANLEY, Test. Moll., 1842, p. 208; * Biv. Shells, 1843, p. 208, pl. xx, — . fig. 48.—* CaTLow and REEVE, Conch. Nom., 1845, p. 65.—*ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 259.—* CHENU, II]. Conch., 1858, pl. xx1, figs. 11a, 11b.—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 491.—* B. H. WRIGHT, Check List, 1888.—*P TEL, Conch. Sam., III, 1890, p. 171. * Margaron (Unio) vaughanianus Lea, Syn., 1852, p. 38; 1870, p. 61. Near Camden, South Carolina. +LAMPSILIS OGEECHEENSIS Conrad. * Unio ogeecheensis CONRAD, Ann. and Mag. N. Hist., IV, 1849, p. 300; Jl. Ac. N. Sei. Phila., I, 1850, p. 275, pl. XxX vi, figs. 3,4; *Pr. Ac. N.Sci. Phila., VI, 1853, p. 254. * Unio prevostianus Lea, Tr. Am. Phil. Soc., X, 1852, p. 269, pl. XIX, fig. 24; *Obs., V, 1852, p. 25, pl. xrx, fig. 24.—*ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 255.— *H. and A. Apams, Gen. Rec. Moll., IT, 1857, p.494.—*MusGRAVE, Phot. Conch., 1863, pl. 1, fig. 10.—*B. H. Wricut, Check List, 1888.—*PaTEL, Conch. Sam., III, 1890, p. 164. *Margaron ( Unio) prevostianus LEA, Syn., 1852, p. 29; 1870, p. 44. * Unio proximus La, Pr. Am. Phil. Soe., V, 1852, p. 252; *Tr. Am. Phil. Soc., X, 1852, 1 T believe that the L. obscurus is only the fully adult form of U. zeiglerianus, which when quite young shows very delicate and beautiful rays. 2In this case, owing to delay in the publication of the transactions, the name appeared in the Synopsis first, and under the generic name Margarita. ees eet en wel NO. 1205. SYNOPSIS OF THE NAIA DES—SIMPSON. 551 p: 271, pl. Xx, fig. 27; *Obs., V, 1852,-p. 27, pl. XX, tig. 27.—*Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 255.—*H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 494.—*B. H. Wricut, Check List, 1888.—P®TEL, Conch. Sam., III, 1890, p. 164. *Margaron (Unio) proximus LEA, Syn., 1852, p. 29; 1870, p. 45. Unio tenerus SIMPSON, Pr. U.S. Nat. Mus., XV, 1892, p. 416, pl. Lviil, figs. 5 and 8.! Neuse River, North Carolina; south to north Florida; west to the Etowah River, Georgia; Duck River, Tennessee. + LAMPSILIS CONSTRICTUS Conrad. *Unio lienosus var. constrictus CONRAD, Monog. X, 1838, p. 91, pl. XLIX, fig. 4. *Unio constrictus CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 247.—*H. and A. ADAMS, Gen. Ree. Moll. II, 1857, p. 493.—*SowERBY, Conch. Icon., XVI, 1868, pl. LXxxvui, fig. 464.—*B. H. Wriaut, Check List, 1888.—*PaTEL, Conch. Sam., III, 1890, p. 148. *Margaron (Unio) constrictus LEA, Syn., 1852, p. 29; 1870, p. 46. *Unio genthii Lua, Pr. Ac. N. Sci. Phila., I, 1857, p. 85; *Jl. Ac. N. Sei. Phila., 1862, p. 57, pl. u, fig. 204; *Obs. VIII, 1862, p. 61, pl. 1, fig. 204.—*B. H. WrRiGuHtT, Check List, 1888.—*P a TEL, Conch. Sam., ITI, 1890, p. 153. *Margaron (Unio) genthiti Lea, Syn., 1870, p. 41. James River, Virginia; south to South Carolina; Floyd County, northwest Georgia; northern Alabama; Tennessee. +t LAMPSILIS APICINUS Lea. *Unio apicinus Lea, Pr. Ac. N. Sci. Phila., IX, 1857, p.32; “Jl. Ac. N. Sci. Phila., IV, 1858, p. 76, pl. xiv, fig. 56; *Obs., VI, 1858, p. 76, pl. xIv, fig. 56.—*B. H. WRIGHT, Check List, 1888. *Margaren (Unio) apicinus LEA, Syn., 1870, p. 44. Othcalooga Creek, Gordon County, Georgia. +t LAMPSILIS OCCIDENTALIS Conrad. *Unio occidentalis CONRAD, Monog., VII, 1836, p. 64, pl. xxxvI, fig.1; *Pr. Ac. N. Sei. Phila., VI, 1853, p. 253.—*H. and A. ADAmMs, Gen. Rec. Moll., II, 1857, p. 492.—*B. H. Wrieut, Check List, 1888.—*PaTEL, Conch. Sam., III, 1890, p. 161. * Margaron ( Unio) occidentalis LEA, Syn., 1852, p. 33; 1870, p. 53. Current and Little Red rivers, Arkansas. tLAMPSILIS NIGERRIMUS Lea. * Unio nigerrimus LEA, Tr. Am. Phil. Soc., X, 1852, p. 268, pl. xvull, fig. 23; *Obs.,V, 1852, p. 24, pl. x vin, fig. 23.—*ConraD, Pr. Ac. N.Sci. Phila., VI, 1853, p. 253.— *H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 494.—*B. H. Wricut, Check List, 1888.—*PamTrEeL, Conch. Sam., III, 1890, p. 161. *Margaron (Unio) nigerrimus LEA, Syn., 1852, p. 31; 1870, p. 49. *Unio fuligo REEVE, Conch. Icon., XVI, 1856, pl. xxx, fig. 159.—*Pa&TEL, Conch. Sam., III, 1890, p. 153. Alexandria, Louisiana, to eastern Texas; Indiana? (Group of Lampsilis iris.) Shell rather small, elliptical, moderately solid in front, thinner behind; epidermis covered with dark green, broken rays, beak sculp- ! As of Ravenel, who, however, never described the species. 552 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. ture consisting of irregular ridges and corrugations that have a ten- dency to fall into two loops, which are sometimes slightly nodulous below; nacre bluish, becoming beautifully iridescent posteriorly. Animal having the inner branchiz free or united to the abdominal sac; mantle border often maculated and generally, in the female, having papilla below the marsupium; marsupium having a strong, deep sulcus parallel with and near to the base. tLAMPSILIS IRIS Lea. *Unioiris Lua, Tr. Am. Phil. Soc., ITI, 1830, p. 439. pl. 1x, fig. 18; *Obs., I, 1834, p. 53, pl. x1, fig. 18.—*Conrap, New F. W. Shells, 1834, p. 69.—*FERussac, Guer. Mag., 1835, p. 26.—* DEsHAyYES. An. sansVert, 2ded., VI, 1835, p. 550; 3d. ed., LI, 1839, p. 673.—*HANLEY, Test. Moll. 1842, p. 206; *Biv. Shells, 1843, p. 206, pl. XXI, fig. 87.—*CaTLow and REEVE, Conch. Nom., 1845, p. 60.—*H. and A. ADAMS,Gen. Rec. Moll., I, 1857, p. 491.—*CuHENU, I11.Conch., 1858, pl.vin, figs. 7, Ta, 7b.—* REEVE, Conch. Icon., XVI, 1865, pl. XXIx, fig. 148.—*CALKINS. Pr. Ottawa Ac. Sci., 1874, p.42.—*B. H. Wriaut, Check List, 1888. * Margarita (Unio) tris LEA, Syn., 1836, p. 37; 1838, p. 25. * Margaron (Unio) iris La, Syn., 1852, p.38; 1870, p. 60.! *Lampsilis iris BAKER, Moll. Chicago, Pt. 1, 1898, p. 105, pl. xin, fig. 1; x1v, fig. 2. oa * Unio creperus Lua, Tr. Am. Phil. Soc., VI, 1838, p. 33, pl. x, fig. 28; *Obs., II, 1838, p. 33, pl. X, fig. 28.—*TRoscHEL, Arch, fiir Naturg., V, 1859, Pt. 2, p. 235.—*Con- RAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 247.—*CuHENU, Ill. Conch., 1858, pl. XXII, figs. 5, 5a, 5b.—*H. and A. ApaMs, Gen. Ree. Moll., Il, 1857, p. 493.— ; *B. H. WriGut, Check List, 1888. * Margarita (Unio) creperus Lma, Syn. 1836, p. 28; 1838, p. 20. * Margaron (Unio) creperus La, Syn. 1852, p. 31; 1870, p. 48. * Unio cresserus HANLEY, Test. Moll., 1842, p. 196.—*CarTLow and REEV#, Conch. Tcon., 1845, p. 58. t* Unio novi-eboracit La, Tr. Am. Phil. Soc., VI, 1838, p. 104, pl. xxiv, fig. 114; *Obs., IT, 1838, p. 104, pl. xx1v, fig. 114.—*TROSCHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 237.—*HANnLeEy, Test. Moll., 1842, p.190; * Biv. Shells, 1843, p. 190.— *DE Kay, Zool. of N. Y., Pt.5, 1845, pl. xx, fig. 240.—*CaTLow and REEVE, Conch. Nom, 1845, p. 61.—-*H. and A. Apams, Gen. Rec. Moll., IT, 1857, p. 491.— *CHENU, Ill. Conch., 1858, pl. xix, figs. 5, 5a, 5b.—* KuUSTER, Conch. Cab. Unio. 1861, p. 221, pl. LXxIv, fig. 4.—*SowrErRby, Conch. Icon., XVI, 1866, pl. xxxviu, fig. 206.—*CaLkIns, Pr. Ottawa Ac. Sci. 1874, p.43.—*B. H. Wricut, Check List, 1888.—*PasTEL, Conch. Sam. ITI, 1890, p. 161. * Margarita (Unio) novi-eboraci LEA Syn., 1838, p. 19. *Margaron ( Unio) novi-eboracit LEA, Syn., 1852, p. 27; 1870, p. 60. “Unio radiatus DE Kay, Zool. of N. Y., Pt. 5, 1848, p. 189, pl. x vit, fig. 236. “Unio subrostratus KUSTER, Conch. Cab. Unio. 1861, p. 203, pl. Lxvn, fig. 3.— “REEVE, Conch. Icon., XVI, 1864, pl. xvn, fig. 78. St. Lawrence drainage; west to southern Michigan; Ohio River sys- tem; Illinois and Wisconsin.’ ' Dr. Lea states in the Synopsis in the above reference that Say’s U. subrostratus is identical with his iris. He is certainly mistaken. > Lea places Unio opalinus Anthony (Am. J1. Conch. II, 1866, p. 146, pl.vt, fig. 2) in the synonymy of the above species. It is an oval, compressed, greenish-yellow shell according to the figure and description, and seems to have been injured anteriorly. I can not tell what itis. It is credited by Anthony to Michigan. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 553 tLAMPSILIS FATUUS Lea.! * Unio fatuus LEA, Pr. Am. Phil. Soc., I, 1840, p. 287; *Tr. Am. Phil. Soc., VIII, 1842, pe2Ol ply xx, fig. 14; *Obs., III, 1842, p. 39, pl. x1, fig. 14.—*Conrab, Pr. Ac. N. Sci. Phila., VI, 1853, p. 249.—* H. and A. ADAMs, Gen. Ree. Moll., II, 1857, p. 491.—* CHENU, II]. Conch., 1858, pl. xxx1, figs. 4, 4a, 4b. —* KustrerR, Conch. Cab. Unio, 1862, p. 287, pl. xcvi, fig. 5.—* B. H. Wrient, Check List, 1888,— *PHTEL, Conch. Sam., ITI, 1890, p. 152. * Margaron (Unio) fatuus La, Syn., 1852, p. 38; 1870, p. 61. * Unio dactylus Lra, Pr. Am. Phil. Soc., I, 1840, p. 287; *Tr. Am. Phil. Soc., VIII, 1842, p. 196, pl. rx, fig.7; * Obs., HI, 1842, p. 34, pl. 1x, fig. 7.—* Conran, Pr. Ac. N. Sci. Phila., VI, 1853, p. 248.—* CHENU, II]. Conch., 1858, pl. xxx, figs. 5, da, 5b.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 491.—* B. H.Wriaut, Check List, 1888. * Margaron (Unio) dactylus Lea, Syn., 1852, p.36; 1870, p.57. Tennessee River system. One shell from Beaver River, Pennsyl- vania seems to be this. LAMPSILIS PLANICOSTATUS ea Unio planicostatus Lea, Pr. Ac. N. Sci. Phila., [V, 1860, p. 92; AC INES Cie Phila., IV, 1860, p. 354, pl. Lx, fig. 179; *Obs., VIII, 1860, p. e pl. ix, fig. 179.—* B. H. Wricut, Check List, 1888. * Margaron (Unio) planicostatus Lea, Syn., 1870, p. 43. Warren County, Kentucky; Clinch River, Tennessee; Tuscumbia, Alabama. tLAMPSILIS NEBULOSUS Conrad.? *Unionebulosus CONRAD, New F'.W. Shells, 1834, p. 28, pl. 111, fig.7; p.70.—* FERUS- sac, Guer. Mag., 1835, p. 29.—*MOLLER, Syn. Noy. Gen., 1836, p. 202.— *CHENU, Bib. Conch., Ist. ser., III, 1845, p. 16, pl.1, fig. 4.—* Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 252.—* B. H. Wrient, Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p. 160. * Margarita Unio) cumberlandianus LEA, Syun., 1836, p. 27; 1838, p. 20. * Margaron (Unio) cumberlandianus LEa, Syn., 1852, p. 30. t* Unio eumberlandicus LEA, Tr. Am. Phil. Soc., VI, 1838, p. 25, pl. vit, fig. 19; *Obs., IT, 1858, p. 25, pl. vit, fig. 19.—* TROSCHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 235.—* HANLEY, Test. Moll., 1842,p. 191; * Biv. Shells, 1843, p. 195, pl. xx11, fig. 59.—* CATLOW and REE ve, Conch. Nom., 1845, p. 58.—*CONRAD, Pr. Kes ING 1Tt is doubtful whether ang: is more than a variety of the preceding. In AOE. it has a rather more cylindrical shell, less rayed, and more decidedly and suddenly thickened in front than iris, but there are intermediate forms. *After carefully comparing again and again large series of specimens, I confess that I can not possibly separate the large number of so-called species I have united under this, the oldest name. It may seem a little strange that a species should be found in the Ohio River area and Gulf drainage, but recent research has proven that a large number of our common Upper Mississippi Valley and Ohio River forms are found in the Coosa, Alabama, Black Warrior, and adjoining streams. There is some variation in the brightness of the painting of a number of these so-called species, and in the form of different specimens, but no more than is found in many other abundant, widely-distributed forms, and the figure on pl. m1 of the New Fresh-water Shells fairly well represents the general manifestation of the males of this species. HDA PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Sei. Phila., VI, 1853, p. 247.—* H. and A. ADams, Gen. Rec. Moll., II, 1857, p. 493.—* CHENU, Ill. Conch., 1858, pl. xxiv, figs. 1, la, 1b.—* SowERBy, Conch. Icon., XVI, 1866, pl. xxxv1, fig. 197.—* B. H. Wricut, Check IS, 1888. _*Pxtan, Conch. Sam., III, 1890, p. 149. * Margaron (Unio) cumberlandicus TL, Syn., 1870, p. 48. +* Unio notatus Lna,Tr. Am. Phil. Soc., VI, 1838, p. 28, pl. v1, fig.22; * Obs., II, 1838, p. 28, pl. vi, fig. 22.—* TRoscHEL, Arch. fiir Nat., V, 1839, Pt. 2, p. 235.— *HANLEY, Test. Moll., 1842, p. 193; * Biv. Shells, 1843, p. 193, pl. x x11, fig. 9.— *CarLow and REEVE, Conch. Nom., 1845, p. 61.—* H. and A. ADAMs, Gen. Ree. Moll., II, 1857, p. 494.—*CuENUu, Ill. Conch., 1858, pl. xx1, figs. 3, 3a, 3b.— *B.H. Wriaat, Check. List, 1888.—* P#Ter, Conch. Sam., III, 1890, p. 161. * Vargarita (Unio) notatus LEA, Syn., 1836, p. 26; 1838, p. 19. * Margaron (Unio) notatus Lea, Syn., 1852, p.29; 1870, p.45. +* Unio glaber Lea, Tr. Am. Phil. Soc., VI, 1838, p. 34, pl. x, fig. 29; *Obs., II, 1838, p. 34, pl. x, fig. 29.—* TrRoscHEL, Arch. fiir. Naturg., V, 1839, Pt. 2, p. 236.—" HANLEY, Test. Moll., 1842, p. 196; * Biv. Moll., 1843, p. 196, pl. xxi, fig. 2.—* CaTLow and REEVE, Conch. Nom., 1845, p. 59.—* ConraD, Pr. Ac. N. Sei., Phila., VI, 1853, p. 250.—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 494.—* Cumunu, Ill. Conch., 1858, pl. xxiv, figs. 3, 3a, 3b.—* SOWERBY, Conch. Icon., XVI, 1868, pl. LXxxv, fig. 452.—* B. H. Wricut, Check List, 1888.—*P#TEL, Conch. Sam., III, 1890, p. 153. * Margarita (Unio) glaber Lea, Syn., 1836, p. 28; 1838, p. 20. * Margaron (Unio) glaber L¥a, Syn., 1852, p. 31; 1870, p. 48. *Unio radians Lma, Pr. Ac. N. Sci. Phila., IX, 1857, p. 82; * Jl. Ac. N. Sci. Phila., 1V, 1859, p. 201, pl. xx, fig. 84; *Obs., VII, 1859, p. 19, pl. xxm1, fig. 84.— *B. H. Wriaut, Check List, 1888. *Margaron (Unio) radians LEA, Syn., 1870, p. 46. t* Unio jonesii Lea, Pr. Ac. N. Sci. Phila., III, 1859, p. 171; * Jl. Ac. N. Sci. Phila., IV, 1860, p. 339, pl. rv, fig. 164; *Obs., VIII, 1860, p. 21, pl. Liv, fig. 164,— *B. H. Wrieut, Check List, 1888.—* PaTEL, Conch., Sam., III, 1890, p. 156. * Margaron ( Unio) jonesii LEA, Syn., 1870, p. 48. t * Unio discrepans LEA, Pr. Ac. N.Sci. Phila., TV, 1860, p. 92; *Jl. Ac. N. Sei. Phila., 1V, 1860,p. 340, pl. Lv, fig. 165; *Obs., VIII, 1860, p. 22, pl. Lv, fig. 165.—* SowERBY, Conch. Icon., XVI, 1866, pl. xxxtv, fig. 176.—*B. H. Wriacut, Check List, 1888.—* PaTEeL, Conch. Sam., III, 1890, p. 151. . * Margaron (Unio) discrepans LEA, Syn., 1870, p. 48. + * Unio scitulus Lia, Pr. Ac. N. Sci. Phila., IV, 1860, p. 98; *J1. Ac. N. Sei. Phila., IV, 1860, p. 342, pl. Lv, fig. 167; *Obs., VIII, 1860, p. 24, pl. Lv, fig. 167.—* B. H. Wricut, Check List, 1888. * Vargaron (Unio) scitulus Lwa, Syn., 1870, p. 45. + * Unio lingueformis Lea, Pr. Ac. N. Sci. Phila., IV, 1860, p. 305; *Jl. Ac. N. Sci. Phila., IV, 1860, p. 345, pl. Lv, fig. 170; *Obs., VIII, 1860, p. 27, pl. Lv1, fig. 170.—* B. H. Wricut, Check List, 1888. * Margaron (Unio) lingueformis Lra, Syn., 1870, p. 48. +t * Unio perpictus Lea, Pr. Ac. N. Sci. Phila., IV, 1860, p. 306; *Jl. Ac. N. Sci. Phila., IV, 1860, p. 350, pl. Lv, fig. 175; *Obs., VIII, 1860, p. 32, pl. Lvl, fig. 175; *B. H. Wrieut, Check List, 1888. * * Margaron (Unio) perpictus Lua, Syn., 1870, p. 44. t*Unio difficilis Lwa,! Pr. Ac. N. Sci. Phila., XII, 1868, p. 144; *Jl. Ac. N. Sci. Phila., VI, 1869, p. 311, pl. xix, fig. 124; * Obs., XII, 1869, p. 71, pl. xurx, fig. 124.—* B. H. WricuT, Check List, 1888. *Margaron ( Unio) difficilis LEA, Syn., 1870, p. 46. ''Two shells are in the Lea collection; one adult and badly worn, the other young, : I believe it to be only a form of nebulosus. De at) NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 555 +* Unio sparus Lea, Pr. Ac. N. Sci. Phila., XX, 1868, p. 143; *J1. Ac. N. Sci. Phila., VI, 1868, p. 306, pl. xLvu, fig.119; *Obs., XII, p. 66, pl. xLvu, fig. 119.—* B. H. Wrieut, Check List, 1838. * Margaron (Unio) sparus LEA, Syn., 1870, p. 45. Cumberland and Tennessee rivers systems, Green River, Kentucky; Tombigbee and Alabama rivers drainage; Columbus, Georgia; Wolfs- ville, North Carolina. + LAMPSILIS MUHLFELDIANUS Lea.! *Unio mihlfeldianus Lea, Tr. Am. Phil. Soc., VI, 1838, p. 41, pl. xu, fig. 36; *Obs., TI, 1838, p. 41, pl. x11, fig. 36.—* TROSCHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 236.—*HANLEY, Test. Moll., 1842, p.195; * Biv. Shells, 1843, p. 196., pl. x x11, fig. 60.—* CaTLow and REEVE, Conch. Nom., 1845, p.61.—*ConrabD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 252.—* CuENw, Il]. Conch., 1858, pl. xvu, figs. 5, 5a, 5b.—* H. and A. ADAmMs, Gen. -Rec. Moll., II, 1857, p. 494.—* SowxERBy, Conch. Icon., XVI, 1866, pl. xxxviul, fig. 211.—* B. H. Wrieut, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 160. *Margarita (Unio) miihlfeldianus Lua, Syn., 1856, p. 27; 1838, p. 20. *Margaron (Unio) miihlfeldianus Lea, Syn., 1852, p. 50; 1870, p. 48. Cumberland River; Watauga River near Johnson City, 'Tennessee. +LAMPSILIS AMCENUS Lea.? *Unio amenus LEA, Pr. Am. Phil. Soc., I, 1840, p. 286; * Tr. Am. Phil. Soe., VIII, 1842, p. 200, pl. x, fig. 12; * Obs., III, 1842, p. 200, pl. x, fig. 12.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 244.—* HANLEY, Biv. Shells, 1856, p. 386, pl. xxrv, fig. 9.—* CHENU, Ill. Conch., 1858, pl. xxx, figs. 5, 5a, 56.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 495.—* SowERBy, Conch. Icon., XVI, 1868, pl. LXxrx, fig. 416.—* B. H. Wrieut, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 144. *Margaron (Unio) amenus LEA, Syn., 1852, p. 29; 1870, p. 45. Holston River, Tennessee. +LAMPSILIS TENER Lea.’ * Unio tener LEA, Pr. Am. Phil. Soc., I, 1840, p. 286; * Tr. Am. Phil. Soc., VIII, 1840, p. 198, pl. x, fig. 10; *Obs., ITI, 1842, p. 36, pl. x, fig. 10.—*CaTLow and REEVE, Conch. Nom., 1845, p. 64.—* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.— *H. and A. ApaMs, Gen. Rec. Moll., II, 1857, p. 495.—* CHENU, Ill. Conch., 1858, pl. xxxI, figs. 1, la, 1b.—* B. H. Wriaut, Check List, 1888.—* PHTEL, Conch. Sam., III, 1890, p. 169. Margaron (Unio) tener Lea, Syn., 1852, p. 28; 1870, p. 44. t* Unio regularis Lea, Pr. Am. Phil. Soc., II, 1841, p.82; * Tr. Am. Phil Soc., VIII, 1842, p. 243, pl. xxv, fig.59; * Obs., III, 1842, p. 81, pl. xxv, fig. 59.—* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 256.—* CHENU, III. Conch., 1858, p]. xx xu, fig. 3, 3a, 3b.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 494. —* SOwERBY, 1 Lea has only a single specimen in his collection. -I consider it a species of doubt- ful validity. 2Doubtfully valid. More regularly elliptical than nebulosus, and the dorsal and basal lines are more nearly paraliel. *1 have only seen the type, a miserably eroded, broken shell, part of which is missing, but I have no doubt that it is the same thing as regularis. 556 PROCEEDINGS OF THE NATIONAL MUSEUM. YOU. XXI. | Conch. Icon.. XVI, 1868, pl. Lx vin, fig. 351.—* B. H. WrieH?, Check List, 1888.—P TEL, Conch. Sam., III, 1890, p. 161. * Margaron ( Unio) reqularis LEA, Syn., 1852, p. 29; 1870, p. 45. Big Pigeon and French Broad rivers, Tennessee; near Bowling Green, Kentucky. + LAMPSILIS SIMUS Lea. * Margarita (Unio) simus LEA, Syn., 1836, p. 29; 1838, p. 21. * Unio simus LEA, Tr. Am. Phil. Soc., VI, 1838, p. 26, pl. vu, fig. 20; * Obs., II, 1838, p. 26, pl. vim, fig. 20.—* TROSCHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 235.— * HANLEY, Test. Moll., 1842, p. 197; * Biv. Shells, 1843, p. 197.— * CatLow and REEVE, Conch. Nom., 1845, p. 64.—* ConrabD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 257.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 494; * CHENU, Ill. Conch., 1858, pl. xx1, figs. 4, 4a, 4b.—* KuSTER, Conch., Cab. Unio, 1861, p. 248, pl. LXxxu1I, fig. 4, p. 262, pl. LXxxxvitl, fig. 3.—* B. H. Wriaut, Check List, 1888.—* PTEL, Conch. Sam., III, 1890, p. 167.! *Margaron (Unio) simus LE, Syn., 1852, p. 31; 1870, p. 50. *Unio notatus CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 253. *Unio spatulatus SOWERBY, Conch. Icon., XVI, 1868, pl. Lxv, fig. 328. *? Unio proximus KUSTER, Conch. Cab. Unio, 1861, p. 248, pl. Lxxx1n, fig. 4. Cumberland and Tennessee river systems; Othcalooga Creek, north- west Georgia. + LAMPSILIS PLANCUS Lea.’ “Unio plancus LEA, Pr. Ac. N. Sci., Phila., IV, 1860, p. 307; ~ Jl. Ac. N. Sei. Phila., V, 1862, p. 81, pl. x, fig. 229; *Obs., VIII, 1862, p. 85, pl. x, fig. 229.— *B. H.Wriaut, Check List, 1888. *Margaron (Unio) plancus LEA, Syn., 1870, p. 50. Coosa River at Wetumpka, Alabama. (Group of Lampsilis subangulatus.) Shell elliptical, inflated, subsolid, drawn to a point behind; that of the female only slightly swollen just behind the central base; bars of the beak sculpture somewhat coarse, feebly double looped; epidermis very smooth, shining, brightly rayed; teeth rather smooth, subcom- pressed; nacre bluish or purplish. Animal having the marsupium very large; ovisacs numerous; gills large, nearly semicircular. LAMPSILIS SUBANGULATUS Lea. *Unio subangulatus Lea, Pr. Am. Phil. Soc., I, 1840, p.287; * Tr. Am. Phil. Soc., VIII, 1842, p. 29, pl. xii, fig. 235 * Obs., III, 1842, p. 47, pl. xm, fig. 23.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 495.—* CHENU, II]. Conch., 1858, pl. XxIx, figs. 2, 2a, 2b6.—* Kuster, Conch. Cab. Unio, 1862, p. 278, pl. xcrv, fig. 2.—* B. H. Wrieut, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 168.—* Simpson, Pr. U.S. Nat. Mus., XVI, 1892, p. 415, pl. Lv, fig. 1. *Margaron (Unio) subangulatus LEA, Syn., 1852, p. 29; 1870, p. 45. * Unio fasciolus CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 249. Appalachicola River system, Georgia and Florida. 'Spelled sinus, but no doubt intended for simus. 2 Doubtfully distinct from simus. Ihave seen only the type. Cn On ~l No. 1205. SYNOPSIS OF THE NAIA DIES—SIMPSON. +LAMPSILIS KIRKLANDIANUS S. H. Wright.! *Unio kirklandianus 8S. H. Wricur, Nautilus, X, 1897, p. 136. ~ Lampsilis kirklandianus Simpson, Pr. Ac. N. Sei. Phila., 1900, p. 76, pl. 1, fig. 7. Ocklocknee river, Leon County, Florida. (Group of Lampsilis ellipsiformis.) Shell elliptical, subinflated, pointed behind, that of the female but slightly swollen at the post base; behind this inflation there is a slight sinus; beak sculpture doubly looped, the hinder loop sometimes open behind; epidermis dull, rayed with wavy lines, generally arranged in bands; nacre white. Animal with the marsupium colored below; gills large, inner wholly united to or only free from the abdominal sack a short distance. + LAMPSILIS ELLIPSIFORMIS Conrad. * Unio ellipsiformis CONRAD, Monog., VIII, 1836, p. 60, pl. xxx1v, fig. 1.—* B. H. WRIGHT, Check List, 1888. * Unio spatulatus Lea, Pr. Am. Phil. Soc., IV, 1845, p. 164; *Tr. Am. Phil. Soc., X, 1848, p. 80, pl. vin, fig. 22; *Obs., IV, 1848, p. 54, pl. vim, fig. 22; Pr. Ac. 5 N. Sci. Phila., VI, 1853, p. 257.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 495.—* KustTER, Conch. Cab. Unio, 1861, p. 261, pl. Lxxxvil, fig. 7.— * CALKINS, Pr. Ottawa, Ac. Sci., 1874, p. 45.—* B. H. Wriacut, Cheek List, 1888.—* Pa TEL Conch. Sam., III, 1890, p. 168. * Margaron (Unio) spatulatus LEA. * Lampsilis spatulatus BAKER, Moll. Chicago, Pt. 1, 1898, p. 106, pl. x, fig.5; x11, fig. 2. Upper Mississippi Valley generally; south to about latitude 38°; western New York; southern Michigan; southern Canada; Red River of the North. +LAMPSILIS PLEASII Marsh. * Unio pleasiti Marsu, the Observer (a newspaper), II, May, 1891; Nautilus, V, 1891, p. 2. Little Red River, Arkansas; Morrisville, Polk County, Missouri. + LAMPSILIS ARKANSASENSIS Lea. “Unio arkansasensis Lea, Pr. Ac. N. Sci. Phila., VI, 1862, p. 169; *Jl. Ac. N. Sei. Phila., V, 1862, p. 206, pl. Xxx, fig. 275; *Obs., IX, 1863, p. 28, pl. xxx, fig. 275.— “B. H. Wricut, Check List, 1888. Hot Springs, Arkansas; Saline River near Benton, Arkansas. (Call.) +LAMPSILIS OZARKENSIS Call. *Unio ozarkensis CALL, Pr. U. S. Nat. Mus., X, 1887, p. 498, pl. xxv11.—*B. H. Wricut, Check List, 1888.—*CaLt, Tr. Ac. Sci., St. Louis, VII, 1895, p. 33, pl. XVIII. Jack’s Ford of Current River, Missouri; White River, Arkansas. 1A lovely, brilliant little species, nearly allied to subangulatus, but probably distinct. 558 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. (Group of Lampsilis trabalis.) Shell solid, that of the male sinuate at post base, and sometimes pro- ‘duced posteriorly, female shell wider, only slightly sinuous; beak seulp- ture rather coarse, feebly doubly looped; epidermis dark, with wavy, capillary rays; hinge heavy; nacre bluish-white or purple; animal unknown. ! + LAMPSILIS TRABALIS Conrad. *Unio trabalis CONRAD, New F. W. Shells, May 3, 1834, p. 27, pl. m1, fig.5; p. 72.—*FERuSSAC, Guer. Mag., 1835, p. 29.—*MOLLER, Syn. Nov. Gen., 1836, p. 201.—*CONRAD, Monog. ., XII, 1840, p. 110, pl. Lx, fig. 2.—*CHENU, Bib. Conch., Ist ser., IIT, 1845, p. 15, pl. 1, fig. 3.—* CONRAD, Pr. Ac. N.Sci. Phila., VI, 1853, p. 259.—* B. H. WRIGHT, Check List, 1888. t Unio troostensis Lea, Tr. Am. Phil. Soc., V, 1834 (August or September), p. 71, pl. x, fig. 80; *Obs., 1, 1834, p. 183, pl. x, fig. 30.—* FrERussac, Guer. Mag., 1835, p. 29.—* HANLEY, Test. Moll., 1842, p.186; Biv. Shells, 1843, p. 186, pl. xx, fig. 24.—CaTLow and REEVE, Conch. Nom., 1845, p.64.—* H. and A. ADAMs, Gen. Rec. Moll., II, 1858, p. 496.—* KusrreR, Conch. Cab. Unio, 1861, p. 193, pl. LXI, fig. 4.—* SOWERBY, Conch. Icon., XVI, 1868, pl. rxxvin, fig. 406,.— *PaTEL, Conch. Sam., III, 1890, p. 170. *Margarita (Unio) troostensis LEA, Syn., 1836, p. 21; 1838, p. 18. *Margaron (Unio) troostensis Lra, Syu., 1852, p. 25. *Margaron (Unio) troostii LEA, Syn., 1870, p. 39. “Unio troostii B. HW. WriGuT, Check List, 1888. “Unio vanuxemensis SOwWERBY, Conch. Icon., 1866, pl. XXxIx, fig. 216. Kentucky and streams of Tennessee; Clinch River, Virginia. +} LAMPSILIS PERPURPUREUS Lea. “Unio perpurpureus LEA, Pr. Ac. N. Sci. Phila., V, 1861, p. 41; ~Jl. Ac. N. Sei. Phila., VI, 1866, p. 46, pl. xvi, fig. 44; “Obs., XI, 1867, p. 50, pl. xv1u, fig. 44.— *B. H. WrRieutT, Check List, 1888. * Margaron (Unio) perpurpureus LEA, Syn., 1870, p. 48. *Unio troostensis SOWERBY, Conch. Icon., XVI, 1868, pl. LXXIX, fig. 415. Tennessee River, drainage, extending into Virginia in the Clinch. (Group of Lampsilis modioliformis. ) Shell elliptical, thin, quite evenly rounded before and behind, some. what inflated; beak sculpture consisting of a few parallel bars, looped in front, and generally open; epidermis with beautiful, rather broad, generally unbroken, sometimes slightly wavy rays; nacre brilliantly iridescent eOstenlonly, teeth compressed. The female shell is greatly 1 Certain ale Syste of it, eae differ so remar ae from foes of the females and from any other known Naiades that it might be supposed that they belonged to an isolated group. Other male shells, however, differ but little from the females, and in L. perpurpureus, a species so close to L. trabalis that it is often difficult to separate them, the male shells differ but slightly from those of the females. Through this former species the group seems very closely related to that of ellipst- formis, and so on to the assemblage typified by L. iris. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 559 expanded posteriorly, the outline sometimes being almost arcuate on the middle base, and sweeping around in a regular curve to the ligament. Animal with mantle border often spotted, and in the female furnished -with fine, well-developed papillz on the post-ventral region; branchial opening large, with many strong papille; marsupium projecting greatly below the rest of the gills, rounded below; ovisacs large and distinct. + LAMPSILIS MODIOLIFORMIS Lea. * Unio modioliformis LEA, Tr. Am. Phil. Soc., V, 1834, p.97, pl. x11, fig. 40; *Obs., I, 1834, p. 209, pl. xu, fig. 40.—* Frrussac, Guer. Mag., 1835, p. 29.—* HANLEy, Test. Moll., 1842, p. 209; * Biv. Shells, 1843, p. 209, pl. xx111, fig. 37.—* CaTLOW and REEVE, Conch. Nom., 1845, p.61.—*H. and A. ApaAms, Gen. Ree. Moll., IT, 1857, p. 492.—* CHENU, Man., 1859, II, p. 139, fig. 678.—*B. H. Wricut, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 159.—* Simpson, Pr. U.S. Nat. Mus., XV, 1892, p. 414, pl. LVI, figs. 2, 3, 6. *Margarita (Unio) modioliformis LEA, Syn., 1856, p. 39; 1838, p. 25. *Margaron (Unio) modioliformis Lea, Syn., 1852, p. 39; 1870, p. 44. * Unio tenerus RAVENEL, Cat., 1834, p. 58.!—* HANLEY, Test. Moll., 1842, p. 209; * Biv. Shells, 1843, p. 209.—* Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 492. * Margarita (Unio) tenerus LEA, Syn., 1836, p. 39; 1838, p. 25. *Margaron (Unio) tenerus LEA, Syn., 1852, p.39; 1870, p. 44. *Unio delumbis KUSTER, Conch. Cab., 1861, p. 207, pl. LXIX, fig. 1. Santee Canal, South Carolina, south to north Florida; probably west to Mississippi. tLAMPSILIS GRACILIOR Lea. *Unio gracilior LEA, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 262; * Jl. Ac. N. Sci. Phila., IV, p. 56, pl. viii, fig. 38; *Obs., VI, p. 56, pl. vii, fig. 38.—* B. H. Wricat, Check List, 1888. *Margaron (Unio) gracilior LEA, Syn., 1870, p. 45. t* Unio obfuscus LEA, Pr. Ac. N. Sci. Phila., IX, 1857, p.172; *J1. Ac. N. Sci. Phila., IV, 1859, p. 197, pl. x x11, fig. 80; *Obs., VII, 1859, p. 15, pl. xxu1, fig. 80.—*B. H. Wricnt, Check List, 1888. *Margaron (Unio) obfuscus LEA, Syn., 1870, p. 45. Near Macon, Georgia. + LAMPSILIS VIBEX Conrad. * Unio vibex Conrad, New L. and F.W. Shells, 1834, p. 31, pl. 1v, fig. 3, p. 72.2— FERUSSAC, Guerin Mag., 1835, p. 29.—* MOLLER, Syn. Nov. Gen., 1836, p. 203.— *HANLEY, Test. Moll., 1842, p. 198; * Biv. Shells, 1843, p. 195.—* CHENU, 1T am not aware that any description of Ravenel’s species has ever been published. In his catalogue, he gives it this name, and refers to his manuscripts only. Speci- mens that he gave Dr. Lea, which are credited to him from the Santee canal in pencil on the shells, are undoubtedly modioliformis. Other specimeus from another locality, which Lea has put with these, and has called Unio tenerus Ravenel, are undoubtedly L. prevostianus Lea. It was these latter specimens which caused me to be mistaken in the identity of Unio tenerus in my paper in Proceedings of the United States National Museum, XV, p. 416. 2One lot in the Academy of Sciences is the same as the exiguus of Lea, another is the same as Lea’s nashvillianus. Conrad’s figure, which is not very good, agrees fairly well with the former, but is certainly not the latter. 960 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XX. Bib. Gamat, 1st ser., III, 1816, Do IT, Til, wor, Ae 6.— © CATL Ow anal REEVE, Conch. Nom., 1845, p. 65.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 495.—* B. H. Wrient, Check List, 1888.—* PasTEL, Conch. Sam., III, 1890, p. 171. *Margarita (Unio) vibex Lr, Syn., 1836, p. 27; 1838, p. 20. * Margaron (Unio) vibex Lua, Syn., 1852, p.30; 1870, p. 48. t* Unio eriguus LHA, Pr. Am. Phil. Soc., I, 1840, p. 287.—* Tr. Am. Phil. Soc., VIII, 1842, p.191, pl. vu, fig. 1; * Obs., IIT, 1842, p. 29, pl. v1, fig. 1.—* Conran, Pr. Ac. N. Sei. Phila., VI, 1853, p. 248.—* H. and A. ApDams, Gen. Rec. Moll., II, 1857, p. 494.—* CHENU, II]., Conch., 1858, pl. xxx, figs, 1, 1a, 1b.'—* SOWERBY, Conch. Icon., XVI, 1866, p. 38, fig. 208.—* B. H. Wrient, Check List, 1888.— * PaTEL, Conch. Sam., III, 1890, p. 152. * Margaron (Unio) exiguus LEA, Syn., 1852, p. 27; 1870, p. 43. +t* Unio stagnalis CONRAD, Ann. and Mag. N. Hist., IV, 1849, p. 300; *Pr. Ac. N. Sci. Phila., IV, 1849, p. 1535? J]. Ac. N. Sci. Phila., I, 1850, p. 275, pl. xxxvu, fig.2; Pr. Ac. N. Sci. Phila., VI, 1853, p. 257.—* H. and A. Apams, Gen. Ree. MollL., II, 1857, p. 495.—* B. H. Wrieut, Check List, 1888.—* ParEL, Conch. Sam., III, 1890, p. 168. * Margaron (Unio) stagnalis LEA, Syn., 1852, p. 27; 1870, p. 42. + *Unio rutilans LBA, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 262; * Jl. Ac. N. Sei. Phila., IV, 1858, p. 59, pl. 1x, fig. 41; *Obs., VI, 1858, p. 59, pl. 1x, fig. 41.— * KusTER, Conch. Cab. Unio, 1861, p. 258, pl. LXxxvu, fig. 3.— *B. H. WRIGHT, Check List, 1888.— * ParEL, Conch. Sam., III, 1890, p. 166. * Margaron (Unio) rutilans Lea, Syn., 1870, p. 45. t* Unio subellipsis Lea, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 262; *J1. Ac. N. Sci. Phila., IV, 1858, p. 62, pl. x, fig. 44; *Obs., VI, 1858, p. 62, pl. x, fig. 44.—*B. H. Wricut, Check List, 1888. *Margaron (Unio) subellipsis LEA, Syn., 1870, p. 45. * Unio prevostianus SowERBY, Conch. Icon., XVI, 1868, pl. LXIII, fig. 315. *Onio subangulatus SOwERBY,® Conch. Icon., XVI, 1868, pl. Lxv, fig. 327. +t LAMPSILIS VIBEX var. NIGRINUS Lea.‘ *Unio nigrinus LEA, Tr. Am. Phil. Soc., X, 1852, p. 284, pl. xxiv, fig. 44; *Obs., V, 1852, p. 40, pl. xxiv, fig. 44.—* ConrapD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 253. +H, and A. ADAMS, Gen. Rec. Moll., IJ, 1857, p. 492.—* B. H. Wrient, Check List, 1888.—* PawtTreL, Conch. Sam., III, 1890, p. 161. *Margaron ( Unio) nigrinus LEA, Syn., 1852, p. 39; 1870, p. 62. t * Unio floridensis S. H. WRIGHT, Conch. Exchange, II, 1888, p. 105. t*Unio averilliti B. H. Wriagut, Pr. Ac. N. Sci. Phila., XXIII, 1888, p. 115, pl. 11, fig. 2.—B. H. WrieutT, Check List, 1888. Ogeechee River, Georgia, west to Jackson, Mississippi; the variety in aE lonida, 6 south to the Hillsborough River. l eso figures, re all ReGen. 2This seems to be equivalent to a male subellipsis of Lea, of a little more solid, evenly oval or elliptical form than the type. I do not think it worthy of a varietal name, as there is every possible gradation between these shells. I formerly placed exiguus, rutilans, and subellipsis in the synonymy of modioliformis (Proc. U.S. Nat. Mus., XV, 1892, p. 414), and in a young state they seem to be exactly alike, as a geu- eral thing; but the examination of a large amount of additional material since wien has led me to believe that the latter may perhaps be distinct. 5 Probably a young specimen, rather wide at the posterior end. 4A smaller, shorter, fragile form, generally having a rather dark epidermis, and purplish nacre. It is a southern variety, and gradually merges into the type in the Chattahoochee region. NO, 1205. SYNOPSIS OF THE NATADES—SIMPSON. 561 +LAMPSILIS DISPAR Lea. “Unio dispar Lua, Pr. Ac. N. Sei. Phila., IV, 1860, p. 3805; *Jl. Ac. N. Sci. Phila., IV, 1860, p.327, pl. x1, fig. 153; *Obs., VIII, 1860, p. 9, pl. u1, fig. 153.—*B, H. WriGut, Check List, 1888. * Margaron (Unio) dispar LEA, Syn., 1870, p. 45. Southwest Georgia. (Group of Lampsilis amygdalum.) Shell rather small, obovate, inflated, epidermis varying from smooth and shining to somewhat cloth-like, ashy green to blackish, but always showing green tints when seen through transmitted light, indistinctly rayed; beaks rather high, sculptured with fine, parallel bars, arranged in a double loop, that in front being large and rounded, that behind small and rather pointed below; hinge teeth compressed; nacre irides- cent behind. The greatest height of the shell is just behind the center; its greatest diameter is just in front of it, or at a point just behind the beaks; the posterior end is often pointed and somewhat raised. Animal with the marsupium large, reaching far below the inner gills, and having a black border; inner gills united to the abdominal sac throughout; anal opening smooth or only slightly crenulate. tLAMPSILIS AMYGDALUM Lea. Unio amygdalum LEA, Desc. of 12 sp. Uniones, Aug. 19, 1843; * Tr. Am. Phil. Soc., IX, 1846. p. 275, pl. xxx1x, fig. 1; *Obs., IV, 1848, p. 33, pl. xxx1x, fig. 1.— * CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 244.—* H. and A, ApAms, Gen., Rec. Moll., II, 1857, p. 492.—*B. H. Wrieut, Check List, 1888.—* Pa&rst, Conch. Sam., III, 1890, p. 144.—* Simpson, Pr. U. 8. Nat. Mus., XV, 1892, p. 426, pl. Lx vil, fig. 8.—* CALL, Pr. Ind. Ac. Sci., 1896, p. 115. *Margaron (Unio) amygdalum Lea, Syn., 1852, p. 39; 1870, p. 62. t* Unio lepidus GOULD,!' Pr. Bost. Soc. N. Hist., VI, 1856, p. 15; Otia Conch., 1862, p. 222.—B. H. WRIGHT, Check List, 1888.—* Srmpson, Pr. U. 8. Nat. Mus., XV, 1892, p. 426, pl. LXv11l, fig. 1; LXIx, fig. 3. * Margaron (Unio) lepidus Lua, Syn., 1870, p. 39. Florida. tLAMPSILIS SUDUS Lea.? *Unio concavus Lea, Tr. Am. Phil. Soc., X, 1852,. p. 260, pl. xv, fig. 11; *Obs., V, 1852, p. 16, pl. xv, fig. 11.—* ConraD, Pr. Ac. N. Sei. Phila., VI, 1853, p.247.— *H, and A. ADAmMs, Gen. Rec. Moll., II, 1857, p. 493.—* SowErRBy, Conch. Icon., XVI, 1868, pl. xcmr, fig. 504.—*B. H. Wricut, Check List, 1888.— * PATEL, Conch. Sam., III, 1890, p. 148. * Margaron (Unio) concavus LEA, Syn., 1852, p. 29; 1870, p. 46. t* Unio sudus LEa, Pr. Ac. N. Sci. Phila., [X, p.170; *Jl. Ac. N. Sei. Phila., IV, 1859, p. 194, pl. xxi, fig. 77; *Obs., VII, 1895, p.12, pl. xx1, fig. 77.—*B. H. WRIGHT, Check List, 1888. * Margaron (Unio) sudus LEA, Syn., 1870, p. 46. Abbeville, South Carolina. 1 Having carefully compared the type of this, a large specimen, with amygdalum, I have no doubt that both are the same species. 2'The name concavus applied by Lea was, I believe, used previously by Zelebor for what seems to be U. tumidus. Proc. N. M. vol. xxii 36 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIT. +LAMPSILIS VESICULARIS Lea.! *Tnio vesicularis Lra, Pr. Ac. N. Sei. Phila., II, 1872, p. 156; *J1. Ac. N. Sei. Phila., VIII, 1874, p. 37, pl. xu, fig. 34; *Obs., XIII, 1874, p. 41, pl. x11, fig. 34.—* B. H. Wricut, Check List, 1888.—* Srupson, Pr. U. 8. Nat. Mus., XV, 1892, p. 425, pl. LX vil, fig. 4. Florida; Flint River, Georgia? +LAMPSILIS VILLOSUS B. H. Wright. “Unio villosus B. H. Wricut, Naut., XII, 1898, p. 32. Lampsilis villosus SIMPSON, Pr. Ac. N. Sei. Phila., 1900, p. 77, pl. 1, fig. 1. Suwanee and Hseambia rivers, Florida. +LAMPSILIS TROSSULUS Lea. Unio trossulus Lea, Desc. 12 sp. Uniones, 1845; *Tr. Am. Phil. Soc., IX, 1846, p. 278, pl. x1, fig. 6; *Obs., IV, 1848, p. 36, pl. x1, fig. 6.—*B. H. Wriaut, Pr. Ac. N. Sci. Phila., VI, 1853, p. 259.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 496.—*B.H. Wrieut, Check List, 1888.—*P«TEL, Conch. Sam., III, 1890, p. 170.—*Simpson, Pr. U.S. Nat. Mus., XV, 1892, p. 427, pl. Lxvitl, fig. 3. *Margaron ( Unio) trossulus Lea, Syn., 1852, p. 25; 1870, p. 39. Lake Monroe, Florida. +LAMPSILIS PELLUCIDUS Lea. “Unio pellucidus Lea, Pr. Am. Phil. Sci., 1V, 1845, p. 163.—*Tr. Am. Phil. Soc., X, 1845, p. 70, pl. 1, fig.6; Obs., IV, 1848, p. 44, pl. 11, fig. 6.—CoNnraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 254.—H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 492.-—B. H. WriGut, Check List, 1888.—P TEL, Conch. Sam., III, 1890, p. 162. *Margaron (Unio) pellucidus Lea, Syn., 1852, p.39; 1870, p. 62. Flint and Chattahoochee rivers, Georgia. +LAMPSILIS MINOR Lea. Unio minor LEA, Desc. 12 sp. Uniones, 1843; *Tr. Am. Phil. Soc., IX, 1846, p. 276, pl. XXXIX, fig.3; *Obs., IV, 1848, p. 34, pl. xxxIX, fig. 3.—*CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 252.—*H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 494.—*B. H. Wricut, Check List, 1888.—*Simpson, Pr. U.S. Nat. Mus., XV, 1892, p. 425, pl. LX VII, fig. 2. *Margaron (Unio) minor LEA, Syn., 1852, p. 31; 1870, p. 49. *Unio stearnsit B. H. Wricut, Check List, 1888. Florida and southwestern Georgia. +LAMPSILIS PAPYRACEUS Gould. “Unio papyraceus GOULD, Pr. Bost. Soc. N. Hist., I, 1845, p.53.—*ConraD, Pr. Ac. ~N. Sei. Phila., VI, 1853, p. 254.—*H. and A. ADAMs, Gen. Rec. Moll., II, 1857, 1 Dr. Lea has only two specimens of this shell, both in very bad condition—dead and eroded. I have been much inclined to believe that it was a form of L. amyg- dalum, but recently a specimen in better condition submitted for my inspection by Mr. B. H. Wright would seem to show that the two are distinct. 2A doubtful species. The type is the only specimen I have ever seen which I can refer with any certainty to this species. It is a smali, rather solid shell, and may be an unusually heavy L. amygdalum. isin NO. 1205. SYNOPSIS OF THE NALIDES—SIMPSON. 563 p. 492. S Gon, Otia. Giandie 1862, 310s 197. cy ie Gwacan Giieas Thige 1888.— *PHTEL, Conch. Sam., III, 1890, p. 162.—* Simpson, Pr. U. S. Nat. Mus., XV, 1892, ». 427, pl. Lx vill, fig. 2. Margaron (Unio) papyraceus LEA, Syn. 1852, p. 38; 1870, p. 62. Everglades, Florida. tLAMPSILIS SINGLEYANUS Marsh.! ~Unio singleyanus MARSH, Joliet Weekly News (a newspaper), May 1, 1891; *Nau- tilus, V, 1891, p. 29.—* Simpson, Pr. U. 8. Nat. Mus., XV, 1892, p. 426, pl. LX VIII, figs. 4, 5. Putnam and Sumpter counties, Florida. Subgenus CARUNCULINA Simpson in Baker, 1898,” (Type, Unio texasensis Lea.) Shell small, inflated, obovate, rather solid, covered with a thick, dark, often cloth-like epidermis, which is rayless or only feebly rayed; beak sculpture consisting of rather strong, concentric ridges, which form, as a general thing, only a single, rounded loop in front, and are strongly curved upward behind.*? Pseudocardinals compressed, smooth on the inside, generally reflexed upward, somewhat torn on the edges. Shell quite commonly pointed posteriorly, that of the female truncated obliquely on post base. Animal with the marsupium consisting of a few large ovisacs (8 to 13); inner gills wholly or in part free from the abdominal sac; female often having «a well-developed caruncle on the mantle below the branchial opening. +LAMPSILIS TEXASENSIS Lea. * Unio parvus CONRAD, Monog., II, 1836, p. 20, pl. 1x, fig. 1.—*HANLEY, Biv. Shells, 1843, p. 196, pl. xxu1, fig.3.—*SowERBY, Conch. Icon., X VI, 1866, pl. xxxv, fig. 186. * Unio texasensis Lea, Pr. Ac. N. Sci. Phila., VI, 1857, p.84; “Jl. Ac. N. Sci. Phila., IV, 1860, p. 359, pl. Lx1, fig. 184; *Obs., VIII, 1860, p. 41, pl. LXI, fig. 184.— * SowERBY, Conch. Icon., X VI, 1866, pl. x, fig. 218.—* B. H. Wrieut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 161.—* Cai, Pr. Ind. Acad. Sci., 1896, p. III, pl. v, figs. 38-40. *Margaron (Unio) texasensis LEA, Syn., 1870, p. 49. t* Unio batrdianus LEaA,* Pr. Ac. N. Sci. Phila., I, 1857, p. 102; * Jl. Ac. N. Sci. Phila., IV, 1860, p. 361, pl. Lx1, fig. 186; *Obs., VIII, 1860, p. 48, pl. Lxy, fig. 186.— *B. H. Wriacut, Check List, 1888. erga on (Unio) bairdianus LEA, Syn., HOU, p. 49. This may inelowe to ho parvus group. The beaks af specimens I have examined were badly eroded. * Krroneously spelled Corunculina. > Occasionally there is a vestige of a posterior loop, and I have seen it perfectly developed, especially in specimens of L. haleianus. The beak sculpture of this group is remarkably like that of the Tetralasmus group of eee though the two assem- blages are not at all closely related. +A rather delicate variety, but I hardly think -worthy of a varietal name. The species varies from being quite slender to short, wide, and inflated. 564 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. +* Unio Baaites Lea, Pr. Ke N. Sik ene ar 1862, p. 169; “31, Ae. iN, Sci. Phila. YY, 1862, p. 204, pl. XXX, fig. 273; *Obs., IX, 1863, p. 26, pl. xxx, fig. 273.—*B. H. WriGut, Check List, 1888. *Margaron (Unio) bealei LEA, Syn. 1870, p. 49. e + LAMPSILIS TEXASENSIS var. COMPRESSUS Simpson! Texas, north to Kansas; Missouri; southern Illinois and Indiana; south through Tennessee, Alabama, Mississippi, and Louisiana; the variety in southwest Texas. tLAMPSILIS MEARNSI Simpson. *Lampsilis mearnsi Simpson, Pr. Ac. N. Sci. Phila., 1900, p. 75, p1. 1, fig. 4. Vicinity of Fort Clarke, Kinney County, Texas. + LAMPSILIS PARVUS Barnes. * Unio parvus BARNES, Am. J]. Sci., VI, 1823, pl. x11, fig. 18 (outline).2—SHORT and Eaton, Transylvania Journal, 1831, p. 78.—*CONRAD, New F. W. Shells, 1834, p. 70.—*Say, Am. Conch., VI, 1834.—FERussac, Guer. Mag., 1835, p. 26.— *HANLEY, Test. Moll., 1842, p. 196.—* Puitippi, Abbild, I, 1845, p. 19, pl. 1, fig. 4.—*CaTLow and REEVE, Conch. Nom., 1845, p. 62.—*KUsTER, Conch. Cab. Unio, 1852, p. 33, pl. v, fig. 5.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 25.—*H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 494.—*B. H. WriGut, Check List, 1888.—*P TEL, Conch. Sam., III, 1890, p. 162. * Margarita (Unio) parvus LEA, Syn., 1836, p. 28; 1838, p. 21. *Margaron (Unio) parvus LEA, Syn., 1852, p. 31; 1870, p. 49. *Lampsilis parvus BAKER, Moll. Chicago, Pt. 1, 1898, p. 109, pl. x1, fig. 3. *Mya parva Eaton, Zool. Text-Book, 1826, p. 222 Mississippi River drainage generally; southwest to central Texas; western New York; southern Canada; and Michigan doubtfully. + LAMPSILIS HALEIANUS Lea.’ *Unio haleianus Lea, Pr. Am. Phil. Soc., II, 1842, p. 224; *Tr. Am. Phil. Soc., VIII, 1842, p. 247, pl. xxvil, fig. 63; *Obs., III, 1842, p. 85, pl. xx vit, fig. 63.— Con- RAD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 250.—*H. and A. ADAMs, Gen., Rec. Moll., II, 1857, p. 494.—* CHENU, Ill. Conch., 1858, pl. xxv1, figs. 6, 6a, 6b.— * ? REEVE, Conch. Icon., XVI, 1865, pl. xx1v, fig. 116.—* B. H. WRIGHT, Check List, 1888.—* Pa TEL, Conch. Sam., ITI, 1890, p. 154. *Margaron ( Unio) haleianus Lea, Syn., 1852, p. 31; 1870, p. 49. Alexandria, Louisiana; eastern Texas. 1A nie ered sour form from southwest Texas may bear this name. 2Barnes’s outline shows a small shell, evenly rounded posteriorly. I believe that this character of being rounded behind is constant, and is the only one by which it always differs from its near ally, L. terasensis, which is more sharp behind and usually obliquely truncate at the post-base. The two species have been continually con- founded, and even Dr. Lea has placed in his collection under the name parvus a number of specimens which I am sure are his texasensis. The former is generally the smaller of the two, though not always, as in northern Illinois it sometimes reaches alength of 2 inches. L. texasensis undoubtedly ranges north into northern Missouri, southern Illinois and Indiana, and the true parvus is occasionally found well down into Texas. ’ This is often confounded with ZL. texasensis. It is a larger, thinner-shelled form, and is not so decidedly truncate at the post-basal region. se No. 1205. SYNOPSIS OF THE NAITADES—SIMPSON. 565 +LAMPSILIS GLANS Lea. *Unio glans Lea, Tr. Am. Phil. Soc., 1834, p. 82, pl. vin, fig. 12; *Obs., I, 1834, p. 92, pl. vu, fig. 12.—* Conrab, New I. W. Shelis, 1834, p. 69.—* FreRussac, Guerin Mag., 1835, p. 26.—* ConraD, Monog., II, 1836, p. 21, pl. 1x, fig. 2—* HanLzy, Test. Moll., 1842, p. 196; Biv. Shells, 1848, p. 196, pl. xxu, fig. 33.—* CaTLow and REEVE, Conch. Nom., 1845, p. 59.—* KusTER, Conch. Cab. Unio, 1852, p. 37, pl. vi, fig.3.—* ConraD, Pr. Ac. N. Sei. Phila., VI, 1853, p. 250.—* CuEnu, Ill. Conch., 1858, pl. v111, figs. 9, 9a, 9b.—* H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 494.—*SowrrsBy, Conch. Icon., XVI, 1866, pl. xxxv1, fig. 190.— *B. H. Wricut, Check List, 1888.—* PasTeL, Conch. Sam., III, 1890, p. 154. * Margarita ( Unio) glans L&a, Syn., 1836, p. 28; 1838, p. 21. *Margaron (Unio) glans LEA, Syn., 1852, p.31; 1870, p. 49. Ohio River drainage; Warsaw, Indiana; (probably St. Lawrence drainage) southern Michigan; White River, Carroll County, Arkansas (Call). +LAMPSILIS GERMANUS Lea. “Unio germanus LEA, Pr. Ac. N. Sci. Phila., V, 1861, p. 40; *Jl. Ac. N. Sci. Phila., VI, 1866, p. 49, pl. xrx, fig. 54; *Obs., XI, 1867, p.53, pl. x1x, fig.54.—* B. H. WRIGHT, Check List, 1888. *Margaron (Unio) germanus LEA, Syn., 1870, p. 49. t * Unio granulatus Lea, Pr. Ac. N. Sci. Phila., V, 1861, p.60; *Jl. Ac. N. Sci. Pkila., VI, 1866, p. 48, pl. xvi, fig.46; *Obs., XI, 1867, p. 52, pl. xvi, fig. 46.—* B. H. Wrigeat, Check List, 1888. *Margaron (Unio) granulatus LEA, Syn., 1870, p. 49. Coosa River, and Big Prairie Creek, Alabama. tLAMPSILIS CYLINDRELLUS Lea. *Unio cylindrellus Lea, Pr. Ac. N. Sci. Phila., XII, 1868, p.144; *Jl. Ac. N. Sci. Phila., VIII, 1869, p.308, pl. xLv111, fig. 121.—* Obs., XII, 1869, p. 68, pl. xLvim1, fig. 121.—* B. H. Wrieut, Check List, i888. * Margaron ( Unio) ceylindrellusgLva, Syn., 1870, p. 49. Tennessee River drainage. tLAMPSILIS MCESTUS Lea.! *Unio mestus LEA, Pr. Am. Phil. Soc., II, 1841, p. 82; *Tr. Am. Phil. Soc., VIII, 1842, p. 244, pl. xxv, fig. 60; *Obs., III, 1842, p. 82, pl. xxv, fig. 60.—* ConraD, Pr. _ Ac. N. Sci. Phila., VI, 1853, p. 252.—* CHENU, III. Conch., 1858, pl. xx v1, figs. 3, 3a, 3b.—* H. and A. ADAMS, Gen. Rec. Moll., I, 1857, p. 494.—* KusTER, Conch. Cab. Unio, 1861, p. 226, pl. Lx xvI, fig.5.—* B. H. WricutT, Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p. 159. *Margaron (Unio) mestus LEA, Syn., 1852, p.31; 1870, p. 49. French Broad River, Tennessee. + LAMPSILIS CROMWELLII Lea. “Unio Cromwellit Lea, Pr. Ac. N. Sci. Phila., 1X, 1865, p.89; Jl. Ac. N. Sci. Phila., VI, 1869, p. 258, pl. xxx1, fig. 73; Obs., XII, 1869, p. 19, pl. xxx1, fig. 73.—B. H. WRIGHT, Check List, 1888. 1The only shells I have seen of this are two in the Lea collection, having quite solid, stumpy teeth. They are old, dead, and a little worn, and in such a condition that it is hard to tell much about them. ‘The species may be a large cylindrellus, but I can not be sure that they are. 566 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. * Margaron ( (Oana) cr sonnets Lea, Som. 1870, p. 49. t Unio marginis LEA, Pr. Ac. N. Sei. Phila.. 1865, p.89; * JJ. Ac. N. Sei. Phila., VI, 1869, p. 225, pl. xxx1, fig. 69; *~Obs., XII, 1869, p. 15, pl. xx x1, fig. 69.—* B. Hi. WRIGHT, Check List, 1888. * Margaron ( Onio) marginis LEA, Syn., 1870, p. 49. Western Georgia and southeastern Alabama. + LAMPSILIS CORVUNCULUS Lea. *Unio corvunculus Lea, Pr. Ac. N. Sci. Phila., XII, 1868, p. 144; *Jl. Ac. N. Sci. Phila., VI, 1869, p. 314, pl. L, fig. 127; *Obs., XII, 1869, p. 74, pl. u, fig. 127.—* B. H. Wricut, Check List, 1888. *Margaron (Unio) corvunculus LEA, Syn., 1870, p. 49. _ Western Georgia; Village Creek, Jefferson County, Alabama; Lake Ashby, Florida. 2 +LAMPSILIS PAULUS Lea. *Unio paulus Lea, Pr. Am. Phil. Soc., 1840, p. 287; * Tr. Am. Phil. Soc., VIII, 1842, p. 213, pl. xv, fig. 29; * Obs., III, 1842, p. 51, pl. Xv, fig. 29.—* ConRapD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 254.—* H. and A. ADAmMs, Gen. Rec. Moll., U, 1857, p. 494.—* CHENU, I]. Conch., 1858, pl. Xx vil, figs. 5, 5a, 5b.—* KUSTER, Conch. Cab. Unio, 1861, p. 260, pl. LXxxvu, fig. 6.—* B. H. Wrient, Check List, 1888.—* P&TEL, Conch. Sam., III, 1890, p. 162. *Margaron (Unio) paulus LEA, Syn., 1852, p. 31; 1870, p. 49. +* Unio corvinus Lea, Pr. Ac. N. Sci. Phila., XII, 1868, p. 144; *Jl. Ac. N. Sei. Phila., VI, 1869, p. 310, pl. xLviml, fig. 123; *Obs., XII, 1869, p. 70, pl. xLvu1, fig. 123.—* B. H.Wricut, Check List, 1888. * Margaron ( Unio) corvinus LEA, Syn., 1870, p. 49. Flint and Chattahoochee rivers, Georgia. LAMPSILIS PULLUS Conrad.! *Unio pullus CONRAD, Monog., XI, 1838, p. 100, pl. Liv, fig. 2; * Proc. Acad. Nat. Sci. PhiJa., VI, 1853, p. 255.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 494.—* KusTER,Conch. Cab. Unio, 1862, p. 270, pl. xc1, fig. 2.—* B. H. WRIGHT, Check List, 1888.—* P#Trex, Conch. Sam., III, 1890, p. 164. *Margaron (Unio) pullus Lea, Syn., 1852, p. 31; 1870, p. 49. Warm Springs, North Carolina. Subgenus PROPTERA Rafinesque, 1819. (Type, Unio alatus Say.) Shell usually large, gaping at the anterior base and edge of dorsal slope, winged along the dorsal region when young and often when adult; beak sculpture feeble, consisting, when developed, of an anterior and posterior loop, the former often wanting; the latter sometimes becomes slightly nodulous; epidermis generally brown, often cloth-like when fresh, rayless or feeble EN teeth rather COMET PSETCOGE NET HES 1Conrad’s an | is a poor one, and I can moh be positive just ahene the species should be placed, but incline to think it a member of the Texasensis group. Lea has a shell which he calls the pullus of Conrad, which came from Ravenel, labeled “‘S. Carolina,” but which, I think, is not this, but some species of the subrostratus group. It is quite probable that pullus is the same as Lea’s corvunculus. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 567 frequently imperfect or nearly wanting; laterals remote; anterior muscle sears often complicated; dorsal scars consisting of a row of from four to thirty distinct, often deep impressions, running from the cavity of the beak obliquely downward anteriorly; nacre purplish. Animal with large branchiw; marsupium consisting of numerous, generally tine ovisaes, which are often somewhat radial: mantle thickened and distinctly double on the border, often papillose behind where the outer told develops into a thickened flap; branchial opening with irregular teeth; anal opening smooth or only slightly crenulate. (Group of Lampsilis alatus.) Shell obovate, strongly winged, subsolid, with a slight posterior and superposterior ridge; epidermis thick, dark, showing irregular growth lines; hinge teeth generally well developed; nacre dark purple, female shell greatly developed in post-basal region. Animal with very numer- ous and fine ovisacs; marsupium large; inner gills united to abdominal sac throughout. +LAMPSILIS ALATUS Say. Unio alatus Say, Nich. Encyc., II, 1816, pl. 1v, fig. 2.—* Hitpreta, Am. Jl. Sci., XIV, 1828, p. 285, fig. 17.—*Say, Am. Conch., VI, 1834.—* Conrab, New F. W. Shells, 1834, p. 67; Monog., VII, 1836, p. 57, pl. xxx1.—* SowERBy, Conch. Man., 1839, fig. 147.—*ANTON, Verz. der Conch., 1839, p. 14.—* REEVE, Conch. Syst., I, 1841, p. 118, pl. Lxxxrx, fig. 8.—*C. B. ADAMs, Thompson’s History of Vermont, 1842, p. 166, fig.; *L. and F. W. Shells of Vermont, 1842, p. 16, fig.—* HaNnLEy, Test. Moll., 1842, p.174; * Biv. Shells, 1843, p. 174.—* Dr Kay, Zool. of N. Y., Pt. 5, 1848, p. 195.—* PoTirz and MicHaupD, Gall. Moll., 1844, p. 146, pl. Lv1, fig. 2.—* CaTLow and REEVE, Conch. Nom., 1845, p. 55.— *KusTER, Conch. Cab., 1852, p. 15, pl. 1, fig. 1.—* DEwery, Ninth Rep. N. Y. Cab. Nat. Hist., 1856, p. 32.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 498.—* CHENU, Man., 1859, II, p. 148, fig. 708.—* SowERBy, Conch. Icon., XVI, 1866, pl. xLiv, fig. 242.—* CALKINS, Pr. Ottawa Ac. N. Sci., 1874, p. 41.— * LATCHFORD, Tr. Ottawa F. N. Club, 1882, p. 52.—* B. H. Wrieut, Check List, 1888.—* P#TEL, Conch. Sam., IIT, 1890, p. 144. 2 * Margarita (Unio) alatus Lea, Syn., 1836, p. 11; 1835, p. 13. * Margaron ( Unio) alatus Lea, Syn., 1852, p. 19; 1870, p. 28. * Lampsilis alatus BAKER, Moll. Chicago, Pt. 1, 1898, p. 97, pl. xvi. *Unio alata LAMARCK, An.sans Vert., V1, 1819, p. 76.—* DESHAYES, Encyc. Meth., II, 1830, p. 583; *An. sans Vert., 2d ed., VI, 1835, p. 539; 3d ed., II, 1839, p. 669. : * Mya alata, EATON, Zool. Text-Book, 1826, p. 219.—* Woop, Index Test. (Rev.), 1856, p. 199, pl.1, supp. fig. 3. “Symphynota alata Lea, Tr. Am. Phil. Soc., III, 1830, p. 448; *Obs., 1834, I, p. 62.—SHORT and EATON, Transylvania J1., 1831, p. 80.—* FERUssAc, Guer, Mag., 1835, p. 25. *Lymnadia alata SWAINSON, Treat. on Mal., 1840, p. 265, fig. 48; * Exotic Conch., 2d ed., 1841, p. 38, pl. vi. * Mysca alata SWAINSON, Exotic Conch., 2d ed., 1841, p. 28, pl. vu. * Metaptera alata STIMPSON, Shells of N. Eng., 1851, p. 14.—* Conrap, Pr. Ac.N. Sci. Phila., VI, 1853, p. 260. *? Metaptera metaptera RAFINESQUE, Ann. Gen. Sci., Brux, V, 1820, p. 300, pl. LXXxX, figs. 20-22.—* CHENU, Bib. Conch., Ist ser., III, 1845, p. 15, pl. 1, figs. 20-22. 568 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXU. tLAMPSILIS ALATUS var. POULSONI Conrad. * Unio poulsont CONRAD, New F. W. Shells, 1834, p. 25, pl. 1, p. 71.—* MOLLER, Syn. Nov. Gen., 1836, p. 200.—* CHENU, Bib. Conch., 1st ser., III, 1845, p. 15, pl. 1, fig. 7.—*B. H. Wrieut, Check List, 1888.—* P&TEL, Conch. Sam., III, 1890, p. 164. * Symphynota poulsoni FERUSSAC, Guer. Mag., 1835, p. 25. * Unio inflatus CONRAD, Monog., VII, 1836, p.57, pl. xxx11.! Entire Mississippi drainage as far south as Arkansas; St. Lawrence drainage; Red River of the North; the variety in the Alabama and Tombigbee systems. +LAMPSILIS COLORADOENSIS Lea. * Unio coloradoensis Lua, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 103; *J1. Ac. N. Sci. Phila., ITI, 1858, p. 314, pl. xxx1, fig. 29; *Obs., VI, 1857, p. 34, pl. xxXx1, fig. 29.—* B. H. WriGHT, Check List, 1888. *Margaron (Unio) coloradoensis LEA, Syn., 1870, p. 41. Eastern Texas. + LAMPSILIS ROVIROSAI Pilsbry. “ Unio (Lampsilis) rovirosai PILSBRY, Nautilus, XIII, 1900, p. 140. Laguna de Atasta, near San Juan Bautista, Mexico. +LAMPSILIS PURPURATUS Lamarck. *Unio purpurata LAMARCK, An.sans Vert., VI, 1819, p.71.—* STaRK, Nat. Hist., II, 1828, p. 90.—* DESHAYES, An. sans Vert., 2d ed., VI, 1835, p.533; 3d ed., IT, 1839, p. 667. * Unio purpuratus LEA, Obs., I, 1834, p. 199.—* FERUSSAC, Guer. Mag., 1835,'p. 26.— * HANLEY, Test. Moll., 1842, p. 208; * Biv. Shells, 1843, p. 208, pl. x x11, fig. 5.— *CaTLOW and REEVE, Conch. Nom., 1845, p. 63.—* ConrRaD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 255.—* KusTEeR, Conch. Cab. Unio, 1861, p. 185, pl. Lrx, fig. 1.—* RrEVE, Conch. Icon., XVI, 1865, pl. xxiv, fig. 115.—* B. H. WRIGHT, Check List, 1888.—* P4@TEL, Conch. Sam., III, 1890, p. 164.—* PinsBry, Nau- tilus, V, 1891, p. 76.—* CALL, Tr. Ac. Sci. St. Louis, VII, No. 1, 1895, p. 38, pl. v. * Margarita (Unio) purpuratus LEA, 1836, p. 39; 1838, p. 25. * Margaron (Unio) purpuratus LEA, Syn., 1852, p. 38; 1870, p. 61. t Unio ater Lea, Tr. Am. Phil. Soc., III, 1830, p. 426, pl. vit, fig. 9; *Obs., I, 1834, p- 40, pl. vir, fig. 9.—*Conrab, New F. W. Shells, 1834, p. 67.—* CHENU, III. Conch., 1858, pl. x, figs. la, 1b. Unio atra DESHAYES, Enc. Meth., IT, 1830, p..582. * Unio lugubris Say, Am. Conch., V, 1832, pl. xtim; VI, 1834. *Unio poulsoni SOwERBY, Conch. Icon., X VI, 1865, pl. 1, fig. 270. _ * Unio dolosus LEA,? Pr. Ac. N. Sci. Phila., IV, 1860, p. 307; *Jl. Ac. N. Sci. Phila., | point than the type, and this form is common in the streams that drain into the Gulf east of the Mississippi, but it seems to connect with typical alatus in Tennessee. 2A miserable, worn, young specimen of what I am quite sure is L. purpuratus. Lea states that the embryos of this are pouch-shaped, while those of purpuratus are wedge- shaped, but the form of embryos in a given species is often not constant. No. 1205. SYNOPSIS OF THE NALADES—SIMPSON. 569 ERBY, Conch. Icon., XVI, 1866, pl. XLI, fig. 228.—*B. H. Wrieut, Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p. 151. * Margaron (Unio) dolosus LEA, Syn., 1870, p. 61. Eastern Texas, north to Kansas, through southern Missouri, western Tennessee, to the Alabama River drainage. +LAMPSILIS PERMISCENS Lea|! * Unio permiscens LEA, Pr. Ac. N. Sci. Phila.. III, 1859, p. 112; *Jl. Ac. N. Sci. Phila., V, 1862, p. 102, pl. xvi, fig. 251; *Obs., VIII, 1862, p. 106, pl. xvi1, fig. 251 —*B. H. Wricut, Check List, 1888. * Margaron (Unio) permiscens LEA, Syn., 1870, p. 61. Tombigbee River, Columbus, Mississippi. +LAMPSILIS GOULDII Lea.? * Unio gouldit Lea, Pr. Am. Phil. Soc., IV, 1845, p. 165; *Tr. Am. Phil. Soc., X, 1848, p. 76, pl. vi, fig. 16; *Obs., IV, 1848, p. 50, pl. v1, fig. 16.—* Conran, Pr. Ac. N. Sci. Phila., VI, 1853, p. 250.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 494.—* B. H. WricutT, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 153. * Margaron ( Unio) gouldit LEA, Syn., 1852, p. 29; 1870, p. 46. Tuscaloosa, Alabama. (Group of Lampsilis saladoensis.) Shell smooth, obovate, inflated, inequilateral, rounded behind, thin, slightly thicker in front; beaks somewhat prominent, nearly smooth; epidermis yellowish olive, shining, rayed; there is a slight carina high up on the posterior slope; pseudocardinals small, lamellar, and oblique; laterals lamellar and curved; anterior cicatrices distinct and well impressed; posterior cicatrices confluent; dorsal cicatrices under the plate, between the pseudocardinals and laterals; nacre bluish white and iridescent.’ Animal unknown. LAMPSILIS SALADOENSIS Lea. * Unio saladoensis LEA, Pr. Ac. N. Sci. Phila., LV, 1860, p. 305; *Jl. Ac. N. Sci. Phila., LV, 1860, p.370, pl. uxv, fig. 195; *Obs., VIII, 1860, p. 52, pl. rxv, fig. 195.—B. H.Wrieut, Check List, 1888.—* FiscHER and CRossk, Miss. Sci., Pt. 7, II, 1894, p. 586. * Margaron (Unio) saladoensis La, Syn., 1870, p. 62. Rio Salado, New Leon, Mexico. 5 1 There is only a single, young, poor specimen in the Lea collection, which may be a valid species, but is quite likely a L. purpuratus. 2Only a single, dead, badly worn shell is in Lea’s collection. It is something like a young umbrosus, butif it really came from Tuscaloosa, Alabama, it probably belongs to the dlatus group. I can not decide certainly as to its affinities. 3Mr. Lea states that a single specimen of U. saladoensis was collected by Dr. Ber- landier and presented to the Smithsonian Institution by Lieutenant Couch (Obs. VIII, p. 53). I have never found this shell, and have not seen the species, and am somewhat at a loss as to where to place it, but the figure and description would indicate that it 1s a young shell of a form related to purpuratus; its rays, which Dr. Lea says are nearest to U. amygdalum, being different from those of any related forms. 570 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL (Group of Lampsilis wumbrosus.) Shell solid, inflated, short-elliptical, covered with a shining, rather smooth brownish epidermis which often has microscopic, radiating folds; beak sculpture excessively faint, being the merest hint at a double loop; anterior end of the shell suddenly thickened, that of the male scarcely differing from the female; hinge teeth well devel- oped; pseudocardinals strong; laterals large, straight, and club- shaped, naere whitish or purplish. Animal with the inner gills united to the abdominal sac; branchie large; marsupium occupying the whole outer gills posteriorly, not projecting much below; palpi large, consid- erably united behind. +LAMPSILIS UMBROSUS Lea. * Unio umbrosus Lea, Pr. Ac. N. Sci. Phila, VIII, 1856, p. 95; *J1. Ac. N. Sci. Pal, JONG Is Os sul pil sorox, iw, Bos Obs., VI, 1857, p. 31, pl. XXX, fig. 26.— * SowERBy, Conch. Icon., XVI, 1866, pl. xxxu1I, fig. 170.—* B. H. WRIGHT, Check List, 1888.—* Patri, Conch. Sam., III, 1890, p. 171.—* FiscHErR and Crosse, Miss. Sci., Pt. 7, II, 1894, p. 587, pl. Lx vu, figs. 1, la, 1b. * Margaron (Unio) umbrosus Lea, Syn., 1870, p. 41. t Unio veracruzensis LEA, Pr. Ac. N. Sci. Phila., XII, 1868, p.150; *Jl. Ac. N. Sci. Phila., VI, 1869, p. 320, pl. Lil, fig. 183; *Obs., XII, 1869, p. 80, pl. Lu, fig. 133.—* B. H. Wrieut, Check List, 1888.—-* FiscHer and Crosss, Miss. Sci., Pt. 7, II, 1894, p. 605. *Margaron (Unio) veracruzensis LEA, Syn., 1870, p..45.' Vera Cruz, Mexico. +LAMPSILIS BERLANDIERI Lea.? * Unio berlandierii Lea, Pr. Ac. Phila., I, 1857, p. 101; *J1. Ac. N. Sci. Phila., IV, 1860, p. 369, pl. LXV, fig. 194; *Obs. VIII, 1860, p. 51, pl. Lxv, fig. 194.— “REEVE, Conch. Icon., XVI, 1865, pl. xxi, fig. 108.—* B. H. Wriagut, Check List, 1888.—* P.ZTEL, Conch Sam. ITI, 1890, p. 146.—* Pitssry, Naut. V, 1891, p. 76.—* FISCHER ana Crossk, Miss. Sei., Pt. 7, II, 1894, p. 584. * Margaron ( Unio) berlandierti Iba Syn., 1870, p. 36. Northeastern Mexico; southwestern Texas. +LAMPSILIS TAMPECOENSIS Lea. * Unio tampecoensis Lna, Tr. Am. Phil. Soc., VI, 1838, p. 24, pl. vil, fig. 18; *Obs., II, 1838, IDs 24) pl. vil, fig-3.—" TRORCIIN, con fiir Naturg., V, 1339, Pt. 2, p. 235.— > TELNSIOD y, Test. Moll., 1842, p. 188; * Biv. Shells, 1243, p. 188, —*CATLOW and REEVE, Conch. Nene 1845, Ey 64.—*Conrap, Pr. Ac. N. Sei. Phila., VI, 1The type of veracruzensis is in the Sana ean collection: and is undoubtedly a very young wmbrosus. 2This species is extremely close to L. tampecoensis, and at one time I believed the two to be mere forms of the same thing. The present species is typically heavier and more inflated, as well as lighter colored, and has higher beaks than the latter. According to Hon. J. D. Mitchell, of Victoria, Texas, who has carefully studied these forms when living, berlandieri is more active, and while spawning it only buries itself sufficiently to he steady and give the post-ventral portion an elevation, while tampecoensis is sedentary in its habits, and buries itself entirely, excepting the extreme posterior point. Letter of Septemb.r 25, 1895. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 571 1853, p. 258.—* CHENU, II]. Conch., 1858, pl. xX1, figs. 5, 5a, 5b.—* H.and A. ADAMS, Gen. Rec. Moll., IT, 1857, p. 495.—*? Kustrr, Conch. Cab. Unio., 1862, p. 275, pl. xcuu, fig. 1.—*? SowErRBy, Conch. Icon., XVI, 1867, pl. Lvut, fig. 291.—*B. H. Wricut, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 169.—* FiscHER and Crossk, Miss. Sci. Pt. 7, II, 1894, p.586.! * Margarita (Unio) tampecoensis LEA, Syn., 1836, p. 22; 1838, p. 18. * Margaron ( Unio) tampecoensis LEA, Syn., 1852, p. 26; 1870, p. 41. * Unio heermannit Lma, Pr. Ac. N. Sci. Phila., XIII, 1861, p.392; *Jl. Ac. N. Sci. Phila., V, 1862, p. 194, pl. xxvJ, fig. 263; “Obs. IX, 1863, p. 16, pl. xx v1, fig. 263.—*? SowERBY, Conch. Icon., XVI, 1868, pl. LXxxiu, fig. 441.—*B. H. WriGuHtT, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 154. * Margaron (Unio) heermannii LEA, Syn., 1870, p. 28.” Northeastern Mexico; southeastern Texas; Honduras. +LAMPSILIS TECOMATENSIS Lea. * Unio tecomatensis Lma, Pr. Am. Phil. Soc., II, 1841, p. 30; *Tr. Am. Phil. Soc., VIII, 1842, p. 234, pl. x x1, fig. 48; *Obs., III, 1842, p. 72, pl. x x1, fig. 48.—ConRaD, Pr. Ac. N. Sei. Phila., VI, 1853, p. 258.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 495.—* CHENU, Il]. Conch., 1858, pl. Xxx1, figs. 6, 6a, 6b.—* B. H. Wricnt, Check List, 1888.—* FISCHER and Crossg, Miss. Sci., Pt. 7, II, 1894, p. 589, pl. LXV, fig. 6; LXvVI, figs. 4, 4a. * Margaron ( Unio) tecomatensis LEA, Syn., 1852, p. 27; 1870, p. 50. Tecomata River, Mexico. LAMPSILIS LIVIDUS Simpson.’ *Unio testudineus REEVE, Conch. Icon., XVI, 1865, pl. x x11, fig. 101. “Unio explicatus FISCHER and Crossk, Miss. Sci., Pt. 7, II, 1894, p. 594. Rio Usumasinto, Portugal, according to Reeve, who no doubt intended this for Rio Usumasinta, Mexico, and Guatemala. + LAMPSILIS EXPLICATUS Morelet. “Unio explicatus MORELET, Test. Noviss, Pt. 1, 1849, p. 28.4—FISCHER and CROSSE, Miss. Sci., Pt. 7, II, 1894, p.594, pl. Lx1, fig. 1. *Margaron ( Unio) semigranosus LEA, Syn., 1870, p. 34. Gentral America. 1 Fischer and Crosse (see above citation) doubt whether Sowerby’s figures in Conch. Icon. and Kuster’s in Conch. Cab. are tampecoensis. ‘Though not very accurate figures, I can not refer them equally well to any other species. *Lea has two specimens of heermannii in his collection; the type, which is a young, slightly injured shell, and a very young one. Iam certain it is only tampecoensis. °Reeve described and figured this form in the Conchologia, supposing it to be the testudineus of Morelet, which is a very different thing. Fischer and Crosse in Mission Scientifique, believing it to be equal to Morelet’s erplicatus, placed it in the syn- onymy of that species. I have never seen an absolutely authentic specimen of expli- catus, but if Fischer and Crosse have accurately figured and described it, I am sure it is different from Reeve’s species, the latter being evidently more inflated, smoother, differently shaped, and having a great deal higher beaks. This being the case, it becomes necessary to give Reeve’s shell anew name. Fischer and Crosse credit the species to Sowerby, but the Plate xx11, in the Conchologia, is credited to Reeve. 4A single valve of what is probably this species was received by the United States National Museum from Dr. H. von Ihering, under the name of Unio explicatus Morelet. Di2 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. LAMPSILIS ALIENIGENUS Crosse and Fischer. * Unio alienigenus CRosspand FiscHER, Jl. de Conch., X LI, 1893, p. 294. —* FIscHER and Crosse, Miss. Sci., Pt. 7, II, 1894, p. 590, pl. 1XvV, figs. 5, 5a; LXVI, fig. 3. Goatzalcoaleos, Vera Cruz, Mexico.' (Group of Lampsilis aztecorwm.) Shell elliptical, oblong, rounded in front and behind, the posterior part being slightly compressed, the whole rather thin; umbonal region inflated; beak sculpture unknown; epidermis brown and rather smooth; pseudocardinals small, laterals curved; nacre purple and shining; female shell (the specimen figured) somewhat swollen in post basal region, so that the basal line is slightly incurved. Animal unknown. LAMPSILIS AZTECORUM Philippi. *Unio aztecorum PHILIPPI, Zeits. fiir Mal., [V, 1847, p. 95; “Abbild., III, 1849, p. 109, pl. v1, fig. 2.—* KustER, Conch. Cab. Unio, 1862, pp. 2, 84, pl. xcv, fig. 6.—* B. H. Wrigut, Check List, 1888.—* PareL, Conch. Sam., III, 1890, p. 145.—* FISCHER and CrossB, Miss. Sci., Pt. 7, II, 1894, p. 607. *Margaron (Unio) aztecorum Lra, Syn., 1870, p. 44. (Group of Lampsilis metallicus.) Shell rather small, obovate-rhomboid, inflated, much narrowed and rounded in front, the form approaching that of a Modiolus; epider- mis a rich coppery bronze, shining; beak sculpture consisting of two faint, rounded loops, the bars of which are inclined to be nodulous; pseudocardinals compressed, not well developed, and sometimes more or less broken into denticles; laterals distinct; pits in the beak cavity humerous and very irregular; nacre dark, coppery to purple, with metallic tints, iridescent behind. Animal unknown. + LAMPSILIS METALLICUS Say. Unio metallicus Say, N. Harin., Disseminator (newspaper form), January 15, 1831; *Am. Conch., VI, 18384.—* CONRAD, New F’. W. Shells, 1834, p. 70.—* FERUSSAC, Guer. Mag., 1835, p. 29.—* L. Say, New Terr. and Fluv. Shells, 1840, p. 6.— * ConraAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 252.—* PTE, Conch. Sam., III, 1890, p. 159. t* Unio cuprinus Lea, Tr. Am. Phil. Soc., IV, 1831, p. 94, pl. xu, fig. 24;? *Obs., I, 1834, pl. x11, fig 24.—* Haney, Test. Moll., 1842, p. 208; * Biv. Shells, 1843, p. 208, pl. xxu1, fig. 7.—*CaTLow and REEVE, Conch. Nom., 1845, p.58.—*CHENU, Ill. Conch., 1858, pl. x1, figs. 3, 3a, 3).—* H. and A. ADAms, Gen. Rec. Moll., 1T am considerably in doubt as to the relationship of the last two species. Fischer and Crosse are sure that alienigenus is close to wnbrosus, and their figure and descrip- tion seem to show that erplicatus is near to alienigenus. 2The Transactions of the Philosophical Society, IV, in which Mr. Lea published his Unio cuprinus, which is identical with Mr. Say’s species, was issued, according to Scudder, in the latter end of 1831. No. 1205. SYNOPSIS OF THE NALADES—SIMPSON. 573 II, 1857, p. 492.—* SowErBy, Conch. Icon., XVI, 1868, pl. LXv1, fig. 336.— *B. H. WRIGHT, Check List, 1888. —* Part, Conch. Sam., III, 1890, p. 149.— * FISCHER and CROSSE, Miss. Sci., Pt. 7, IT, 1894, p. 615. * Margarita (Unio) cuprinus LEA, Syn., 1856, p. 39; 1838, p. 25. *Margaron (Unio) cuprinus LEA, Syn., 1852, p. 38; 1870, p. 61. *Unio aereus REEVE, Conch. Icon., X VI, 1856, pl. xxx, fig. 160.'\—* PastEL, Conch. Sam., III, 1890, p. 144. Mexico. (Group of Lampsilis gracilis.) Shell large, thin, elliptical or slightiy obovate, with a high posterior and an anterior wing, not greatly inflated; beaks low; epidermis rather smooth, often feebly rayed, dull colored, but usually glossy; hinge line slightly and rather regularly curved; teeth compressed, pseadocardinals but feebly and often imperfectly developed; nacre purplish tinted, rather dull. Shell of the male and female nearly alike, the latter -searcely swollen at post basal region. Animal with the mantle greatly thickened at posterior end, and double and thickened at post base, where it is often crenulate or toothed on its inner border, and has the outer developed into a flap; inner gill united to the abdominal sac throughout; marsupium enormous, composed of a great number of delicate semiradiating ovisacs, projecting far below the inner gills in a semicircle. tLAMPSILIS GRACILIS Barnes. *Unio gracilis BARNES, Am. JI. Sci., VI, 1823, p. 274.—* HitpreETH, Am. JI. Sci., XIV, 1828, p. 288.—* DEsHAYES, An. sans Vert, 2d ed., VI, 1835, p. 559; 3d ed., II, 1839, p. 676; Tr. Element. Conch, 1839, p. 18, pl. xxx, figs. 2, 3.— * HANLEY, Test. Moll., 1842., p. 174.—*C. B. Apams, Thompson’s Hist. Ver- mont, 1842, p. 166; * F. W. and L. Shells of Vermont, 1842, p. 16.—* HaNnLEy, Biv. Shells, 1843, p. 174, pl. xx, fig. 37.—* CaTLow and REEVE, Conch. Nom., 1845, p. 59.—* DESHAYES, Tr. Elem., II, 1853, p. 217, pl. xxx, figs. 2, 3.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 498.—* SowErBy, Conch. Icon., XVI, 1866, pl. xxxIx, fig. 215.—* CaLkins, Pr. Ottawa Ac. Sci., 1874, p. 42.— * LATCHFORD, Tr. Ottawa F. Nat. Club., 1882, p. 52.—*B. H. WriGuHrt, Check List, 1888. * Mya gracilis EATON, Zool. Text Book, 1826, p. 222. * Symphynota gracilis Lua, Tr. Am. Phil. Soc., III, 1830, p. 452.—SHorr and EaTON, Transylvania J1., 1831, p. 80.—* LEa, Obs., I, 1854, p. 66. *Margarita (Unio) gracilis LEA, Syn., 1836, p. 11; 1858, p. 15. * Metaptera gracilis STIMPSON, Shells of N. Eng., 1851, p. 14. * Margaron ( Unio) gracilis LEA, Syn. 1852, p. 19; 1870, p. 28. * ? Anodon gracilis SOwERBY, Genera, No. XVII, 1823, fig. * Lampsilis gracilis BakuR, Moll. Chicago, Pt. 1, 1898, p. 99, pl. x1x, fig. 1. * Unio fragilis SWAINSON, Zool. Ill., 1st ser., III, pl. cLxx1, 1823.2—* DESHAYES, Encye. Meth., II, 1830, p.587.—*Say, Am. Conch., VI, 1834.—* Conrab, New F. W. Shells, 1834, p. 69; *Monog., VI, 1836, p. 55, pl. xxx.—* CHENU, Bib. 1The description of the plate is dated 1856, and in the contents it is credited to Reeve, although the previous plates bear date of 1865, and those following 1866. 2Swainson’s Unio fragilis was published about the same time as Barues’s gracilis, and as it is impossible for me to say which has priority, I agree with Lea that it is better to adopt Barnes’s well-known name. 574 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL Conan 1st ser., III, 1845, p p- ie —* Ger, oun Cab. int, 1852 2, p. 19, pl. 111, ae ike * Symphynota fragilis FERUSSAC, Guer. Mag., 1835, p. 25. * Metaptera fragilis CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 260. * Unio fragilis var. gracilis PATEL, Conch. Sam., III, 1890, p. 153. * Mya plana EATON, Zool. Text-Book, 1826, p. 221. * Unio planus CONRAD, New F. W. Shells, 1834, p. 71. * Unio (Nida) atrata SWAINSON, Zool. Il., 1841, pl. cLxx1. * Unio atratus HANLEY, Test. Moll., 1842, p. 199; * Biv. Shells, 1848, p. 199, pl. x x1, fig. 29.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 492.—* Para, Conch. Sam., III, 1890, p. 145. Entire Mississippi River drainage, St. Lawrence system; Red River of the North; Hudson River; eastern Texas. : +LAMPSILIS LAVISSIMUS Lea. * Symphynota levissima, Lua, Tr. Am, Phil. Soc., III, 1830, p.444, pl. x11, fig. 235 * Obs., I, 1834, p. 58, pl. x11, fig. 23.—SuHorr and Earon, Transylvania Jl., 1831, p. 80. * Unio levissima, DESHAYES, An. sans Vert., 2d ed., VI, 1835, p. 558; 3d ed., II, 1839, p. 675 * Unio levissimus CONRAD, New F. W. Shells, 1834, p. 70. a HANLEY, Test. Moll., 1842, p.174; * Biv. Shells, 1843, p. 174, pl. x x1, fig. 41.—* CaTLow and Tyo, Conch. Nom., 1845, p.60.—* H. and A. ApAms, Gen. Rec. Moll., II, 1857, p. 498.— * SowERBY, Conch. Icon., XVI, 1866, pl. XLVI, fig. 250.—* B. H. WRIGHT, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 156. * Margarita (Unio) levissimus Lea, Syn., 1836, p. 11; 1838, p. 13. * Margaron (Unio) levissimus Lea, Syn., 1852, p. 19; 1870, p. 28. *Unio ohioensis Say, Am. Conch., VI, 1834.—KusrEer, Conch. Cab., 1866, p. 20, pl. LXIX, fig. 5. * Symphynota ohioensis FERUSSAC, Guer. Mag., 1838, p. 25. * Metaptera ohioiensis CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 260. * Unio discoideus SOWERBY, Conch. Icon., X VI, 1866, pl. L111, fig. 275. Mississippi drainage generally; eastern Texas; southern Michigan; western New York. +LAMPSILIS ALABAMENSIS Conrad. * Symphynota inflata Lea, Tr. Am. Phil. Soc., IV, 1831, p. 99, pl. xiv, fig. 28; Obs., I, 1834, p. 109, pl. xiv, fig. 28.—FERUSSAC, Guer. Mag., 1835, p. 25. * Metaptera inflata CoNRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 260. * Margarita ( Unio) inflatus LEA, Syn., 1836, p. 11, 1838, p. 13. * Unio inflatus HANLEY, Test. Moll., 1842, p. 174; * Biv. Shells, 1843, p. 174, pl. xx1, fig. 45.—* CaTLow and REEVE, Conch. Nom., 1845, p. 60.—* KusTER, Conch. Cab. Unio, 1852, p. 17, pl. u, fig. 1.—* H. and A. ApDams, Gen. Ree. Moll., II, 1857, p. 498.—* SowERBy, Conch. Icon., XVI, 1866, pl. XLV, fig. 246.—* B. H. Wriauat, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 155. * Margaron (Unio) inflatus Lea, Syn., 1862, p. 28; 1870, p. 28. * Unio alabamensis CONRAD, New F. W. Shells, 1834, p. 67.! Alabama and Tombigbee River areas. iow name given Be Conrad for Unio inflatus Thies, itsowerrated by Barnes. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON,. 515 (Group of Lampsilis amphichenus.) Shell rather thin, elongate, elliptical, rounded before, pointed behind, compressed, with a smooth, shining, black, rayless epidermis; beaks not prominent, their sculpture unknown; there is a conspicuous gap at the anterior base, and another very distinctly outlined at the upper part of the posterior end like that of Schizotherus; hinge line slightly curved; pseudocardinals imperfect; laterals compressed; nacre purplish; female shell inflated at posterior base. Animal with large, elliptical palpi; mantle slightly thickened at the edge; anal opening widely separated from the superanal, the latter large; foot large, hatchet-shaped. Several animals were examined, but all were so much decayed that most of the characters could not be made out. +LAMPSILIS AMPHICHAENUS Frierson. *Ucxvio (Lampsilis) amphichenus FRIERSON, Nautilus, XI, 1898, p. 10, pl. 1. (Group of Lampsilis leptodon.) Shell rather thin, elongate, elliptical, compressed, decidedly pointed behind, the point raised above the center of the shell; beaks low, their sculpture very feeble; there is a conspicuous post-dorsal wing in young shells, and sometimes vestiges of an anterior wing; young shell rather dull and faintly rayed; there is a decided anterior basal and posterior gap; hinge teeth very imperfect; )»seudocardinals often almost want- ing, even in young shells; laterals faint, sometimes wanting in the adult Shell; nacre coppery to purplish; female shell not inflated at post base. Animal with large, very thin, light brown branchie, free nearly the whole length of the abdominal sac; palpi large, thin, nearly semi- circular; mantle thin, with a wide crenulate border; marsupium projecting slightly below the inner gills. tLAMPSILIS LEPTODON Rafinesque.! *Unio (Leptodea) leptodon RAFINESQUE, Ann. Gen. Sci. Phys. Brux., 1820, p. 295, pl. LXXX, figs. 5-7. *Unio leptodon Say, Am. Conch., VI, 1834.—* CONRAD, New F. W. Shells, 1834, p. 70; Monog., VII, 1836, p.58, pl. xxx111.—* CHENU, Bib. Conch., Ist ser., III, 1845, p. 12, pl. 1, figs. 5-7.—* Kuster, Conch. Cab. Unio, 1861, p. 197, pl. Lxiv, figs. 1,2.—* SOWERBY, Conch. Icon., X VI, 1866, pl. xiv, fig. 257.—* PHTEL, Conch. Sam., IIT, 1890, p. 157. * Symphynota leptodon FERUSSAC, Guer. Mag., 1835, p. 25. ~ Leptodea leptodon CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 262. * Anodon purpurascens SWAINSON, Zool. I11., Ist ser., III, pl. cLx, 1823.—* CaTLOW and REEVE, Conch. Nom., 1845, p. 67. * Unio velum Say, New Harm. Disseminator, II, September 23, 1829, p. 293; Jan- uary 15, 1831 (newspaper form).—* FERUSSAC, Guer. Mag., 1835, p. 28.—* L. W. Say, Terr. & Fluy. Shells, 1840, p. 5. 'This is one of the few species which its author has described so distinctly that I feel sure there can be no doubt about it. Besides, his figure, such as it is, is some- thing like the tenwisstmus of Lea. | ’ 576 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL * Symphynota tenuissima Lea, Tr. Am. Phil. Soc., III, 1829, p. 453, pl. x1, fig. 21; *Obs. 1, 1834, p. 67, pl. x1, fig. 21. Symphynota tenuissima SHORT and EaTon, Transylvania Jl., 1831, p. 80.» * Margarita (Unio) tenwissimus Lma, Syn., 1836, p. 38; 1838, p. 25. * Unio tenwissimus HANLEY, Test. Moll., 1842, p. 206; * Biv. Shells, 1843, p. 206, pl. xx, fig. 42.—* CaTLow and REEVE, Conch. Nom., 1845, p. 64.—~H. and A. ApAms, Gen. Rec. Moll., II, 1857, p. 491.—* SowERBy, Conch. Icon., XVI, 1866, pl. xiv, fig. 240.—* B. H. WrieutT, Check List, 1888. * Margaron (Unio) tenuissimus Lea, Syn., 1852, p. 38; 1870, p. 61. Upper Mississippi River drainage, south to the Tennessee River; Buffalo, New York; southern Michigan; Souris River, Manitoba. (Group of Lampsilis scutulatus.) : Shell rhombic elliptical, compressed, rather thin, with a high posterior and a low anterior wing, with two posterior ridges; the valves often exhibiting fine radiating plications on the posterior part; beaks com- pressed, sometimes showing the nepionic shell, almost destitute of sculpture, which, when present, consists of faint indications of two rounded loops; epidermis rather dull, sometimes indistinctly rayed; left valve with two pseudocardinals, the anterior a sharp, straight ridge sloping obliquely downward and forward from a point just in front of the beaks, the hinder curiously compressed and showing a tendency to break into denticles; right valve with two sharp, ridge-like, sloping pseudocardinals; laterals slender, compressed, straight or wavy; nacre bluish white to pale violet; dorsal scars few; female shell apparently slightly swollen at the posterior base; animal unknown. t LAMPSILIS SCUTULATUS Morelet. * Unio scutulatus MORELBT, Test. Noviss., I, 1849, p. 80.—* FIscHER and CROSSE, Miss. Sci., Pt. 7, II, 1894, p. 561, pl. rx, fig.5; Lxvil, fig. 6. Yucatan. LAMPSILIS PALUDOSUS Morelet. * Unio paludosus MORELET, Test. Noviss., I, 1849, p. 30 —* FISCHER and CROSSE, Miss. Sci., Pt. 7, II, 1849, p. 559, pl. Lx, fig. 3. Yucatan. LAMPSILIS PLANIVALVIS Morelet. * Unio planivalvis MORELET, Test Noviss., II, 1851, p. 24.—* 'IscHER and CROSSE, Miss. Sci., Pt. 7, Ii, 1894, p. 560, pl. 1x, fig. 2.! Usumasinta River, Guatemala. +LAMPSILIS DELPHINULUS Morelet. * Unio delphinulus MORELET, Test. Noviss., I, 1849, p. 31.—* HANLEY, Biv. Shells, 1856, p. 381, pl. xxiu, fig. 60.—* SowErRBy, Conch. Icon., XVI, 1866, pl. xxiII, fig, 237.—* B. H. Wriant, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 150.—* Fischer and Crosse, Miss. Sci., Pt. 7, II, 1894, p. 557, pl. LXIII, figs. 2, 2a, 2b. * Margaron (Unio) delphinulus LEA, Syn. 1870, p. 28. Guatemala. 1These three may be mere variations of one thing. sada No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 577 LAMPSILIS LARGILLIERTI Philippi. * Unio largillierti PH1Lippi, Zeits. fiir Mal., IV, 1847, p. 94.! Yueatan. The following are unfigured and unknown to me:. * Lampsilis fasciola RAFINESQUE, Ann. Gen. Sci. Brux., V, 1820, p. 299. * Lampsilis fulgens RAFINESQUE, Cont. Monog., 1831, p. 7. * Lampsilis argyratus RAFINESQUE, Cont. Monog., 1831, p. 7. Genus PSEUDOSPATHA Simpson, 1900. (Type, Spatha tanganyicensis Smith. )? Burtonia BouRGINGUAT, Moll. Fluv. Nyanza, 1883, p. 20.9 Shell compressed, thin, oblique, inequilateral, with a straight dorsal line which ends in a small wing in front and behind, rounded and cut away at the anterior base, produced in the post-basal region, gaping in front and behind, slightly twisted on its axis and usually bent poste- riorly to the right or left; a low, often double posterior ridge ends in a biangulate point behind; beaks compressed, the sculpture faint, irregu- lar, concentric ridges which continue over the shell, and at the beaks sometimes become rather sharply pustulous, the glochidium often remaining; epidermis yellowish brown, sometimes delicately rayed; teeth rudimentary, one or more faint compressed pseudocardinals and a single lateral in each valve; muscle scars irregular; nacre coppery or purple, often rayed. Animal unknown. *PSEUDOSPATHA TANGANYICENSIS Smith. * Spatha tanganyicensis SMitTH, Proc. Zool. Soc. Lond., 1880, p. 350, pl. xxx1, fig. 8. * Burtonia tanganyicinsis PHTEL, Conch. Sam., III, 1890, p. 187.—von MarTENs, Beschalte, 1897, p. 257. * Burtonia moinelt BOURGUIGNAT, Un. and Ir. Tan., 1886, p.33; Icon. Mal. Tan., 1888, pl. xxv, fig. 1. * Burtonia lavigerina BouRGuUIGNAT, Un. and Ir. Tan., 1886. p. 36; Icon., Mal. Tan., 1888, pl. XXIV, figs. 1-4. ~ Burtonia magnifica BOURGUIGNAT, Un. and Ir. Tan., 1886, p.41; Icon. Mal. Tan., 18x8, pl. XXVI, figs. 1-2. Lakes Tanganyika and Nyanza, Africa. PSEUDOSPATHA LEOPOLDVILLENSIS Putzeys. Burtonia leopoldvillensis PUTZEYS, Proc. Verb. Soc. Mal. Belg., 1898, pl. xxXvIIt., fig. 16. Leopoldville, Congo. 1 Unfignred and unknown to me. From the description I should think likely it belonged here, but it may not. ?The shells of this group bear a striking likeness to that of Unio tenuissimus Lea, in form, texture, color, teeth, and in gaping in front and behind, and I am inclined to believe that they are related to it, and the Unio myersianus of Southeastern Asia, to Unio alatus, and U. delphinulus of Central America. 3Naime preoccupied in birds, 1850. Proce, N. M. vol. xxii ——37 578 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XX11. + PSEUDOSPATHA LIVINGSTONENSIS Bourguignat. * Spatha tanganyicensis SMITH (part), Proc. Zool. Soc. Lond., 1880, pl. xxx1, fig. 8a; 1881, p. 296, pl. XxxIV, fig. 32. * Burtonia livingstonensis BOURGUIGNAT, Moll. Fluv. Nyanz., 1883, p. 20. * Burtonia elongata BOURGUIGNAT, Un. and Ir. Tan., 1886, p. 34; Icon. Mal. Tan., 1888, pl. XxV, fig. 3. * Burtonia contorta BOURGUIGNAT, Un. and Ir. Tan., 1886, p. 39; Icon. Mal. Tan., 1888, pl. Xxv1, figs. 3-5. Lake Tanganyika. PSEUDOSPATHA SUBTRIANGULARIS Bourguignat. * Burtonia subtriangularis BOURGUIGNAT, Un. and Ir. Tan., 1886, p. 35; Icon. Mal. Tan., 1888, pl. xxv, fig. 2. * Burtonia grandidieriana BOURGUIGNAT, Un. and Ir. Tan., 1886, p. 42; Icon. Mal. Tan., 1888, pl. Xx vil, figs. 1-3. Lake Tanganyika. PSEUDOSPATHA BOURGUIGNATI Bourguignat.! * Burtonia bourguignati BOURGUIGNAT, Un. and Ir. Tan., 1886, p. 38; Icon. Mal. Tan., 1888, pl. xx vil, figs. 4-5. Lake Tanganyika. The following species are unfigured and unknown to me. * Burtonia jouberti BOURGUIGNAT, Un. and Ir. Tan., 1886, p. 40. * Burtonia bridouxi, BOURGUIGNAT, Un. and Ir. Tan., 1886, p. 40. All from Lake Tanganyika. Genus HYRIOPSIS Conrad, 1853. (Type, Unio delphinus Gruner.”) Hyriopsis CONRAD. Pr. Ac. N. Sei. Phila., 1853, p. 269. Shell large, compressed, rhomboid-eiliptical, dorsally winged and gen- erally biangulate behind, sometimes produced in the post-basal region; beaks low, mostly compressed, the sculpture consisting of numerous concentric ridges nearly parallel with the growth lines, generally extending well on to the disk of the shell, the earlier ones fine, often slightly nodulous or doubly looped; epidermis olive to brown, some- times faintly rayed; pseudocardinals two or three in the left valve, one to three in the right, when young compressed, but often breaking into irregular denticles when old; laterals long, compressed, two in the left valve and one in the right, sometimes vertically striate, the left valve often having a sort of raised lamellar tooth at or just behind the-beak. ' Said to be of Jonbertin the literature. 2The general make-up of the shells of this genus, Cyclomya, and Cristaria seems to indicate close relationship to each other, and a not distant one to the subgenus Proptera of Lampsilis, and | should not be surprised to learn that the marsupium occupies the posterior part of the outer gills in distinctly marked ovisacs, No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 579 Beak cavities shallow; dorsal scars numerous, extending from the cav- ity downward and forward. Anterior muscle scars three, distinct, pos- terior large, indistinct; front end of the sheli usually thickened; a row of plications often occurring just below the laterals, as in Cristaria. Animal unknown. (Group of Hyriopsis bialatus.) Shell somewhat trapezoidal, with a posterior ridge, biangulate behind, with a very high, pointed, triangular, posterior wing, and a smaller, pointed one in front, which projects forward; beaks low, sculpture not seen; epidermis brown; pseudocardinals broken up into denticles; hinge line slightly curved; the three anterior muscle scars separate and deep; dorsal scars not extending greatly downward in front; nacre bluish white. tHYRIOPSIS BIALATUS Simpson|! *Unio delphinus GRUNER Arch. fiir Naturg, I, 1841, p. 276, pl. 1x, figs. 1, la-c.— * DELESSERT, Rec. Coq. Lam., 1841, pl. x1x, fig. 3, 3a, 3b.—* Lea, Tr. Am. Phil. Soc., VIII, 1843, p. 218, pl. xvi, fig. 35; *Obs., III, 1842, p. 56, pl. xvu, fig. 35.2—* KusTER, Conch. Cab. Unio, 1852, p. 18, pl. 11, figs. 2-4.—* HanLey, Biv. Shells, 1856, p. 381, pl. xx, fig. 44.—~ H. and A. ApaMs, Gen. Rec. Moll., IJ, 1857, p. 498.—* CHENU, Man., 1859, II, p. 143, fig. 707.—SowrErBy, Conch. Icon., XVI, 1866, pl. xii, fig. 238.—* MORELET, Series Conch., IV, 1875, p. 345.— “PATEL, Conch. Sam., III, 1890, p. 150. *“Margaron (Unio) delphinus Lea, Syn. 1852, p. 19; 1870, p. 28. “Unio megapterus MORELET, J. de Conch., XII, 1863, p. 159.—* PaTeL, Conch. Sam., III, 1890, p. 158. Southeastern Asia, including Cambodia, Siam, and the Malay Penin- sula. (Group of Hyriopsis cumingii.) Shell rather thin, with a high wing posteriorly, and a smaller one in front; beaks greatly compressed, their sculpture at first consisting of fine and later of coarse coucentric ridges, extending well on to the disk; corrugations on the posterior slope distinct. HYRIOPSIS CUMINGII Lea. “Unio cumingiti La, Pr. Ac., N. Sci. Phila., VII, 1852, p. 54.—*Lxa, Jl. Ac. N. Sci. Phila., IV, 1860, p. 240, pl. xxxv, fig. 120; * Obs., VII, 1860, p.58, pl. XXXvV, fig. 120.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 498.— *“SOWERBY, Conch. Icon., XVI, 1866, pl. xiix, fig. 264.—* HEupDr, Conch. Pluv. Nank., VIII, pl. rxiv. *“Margaron (Unio) cumingii LEA, Syn., 1852, p. 19; 1870, p. 28. - China. by Spengler, and the term megapterus of Morelet was applied by Rafinesque to a Metaptera (Unio) and used by Chenu under the generic name Unio before 1863. It will therefore have to have a new name. *Lea described this species under the above name, not knowing that it had been already applied to the same species by Gruner. 5st) PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. tHYRIOPSIS DELAPORTEI Crosse and Fischer. “Unio (Arconaia) delaportei CROSSE and FISCHER, J. de Conch., XXVI, 1876, p. 327, pl. xX, fig. 1; X1, fig. 5.! Cambodia; Siam. (Group of Hyriopsis myersianus.) Shell rather solid, thickened in front; posterior ridge rather low; beaks compressed, the sculpture consisting, apparently, of a few rather faint, irregular ridges, sometimes slightly nodulous. tHYRIOPSIS MYERSIANUS Lea. *Unio myersianus LEA, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 92; *J1. Ac. N. Sei. Phila., III, 1857, p. 290, pl. x x11, fig. 2; *Obs., VI, 1857, p. 10, pl. xxu1, fig. 2.— “SOWERBY, Conch. Icon., XVI, 1866, pl. L, fig. 265.—* MoRELET, Ser. Conch., IV, 1875, p. 344.—* PTE, Conch. Sam., III, 1890, p. 160. *Margaron (Unio) myersianus LEA, Syn., 1870, p. 28. * + Unio housei Lma, Pr. Ac. N. Sei. Phila., VIII, 1856, p.92; *J1. Ac. N. Sci. Phila., ) III, 1858, p. 291, pl. xxi, fig. 3; *Obs., VI, 1857, p. 11, pl. xxl, fig. 3.— “VON Martens, Pr. Zool. Soc. Lond., 1860, p. 14.—*SowxErBy, Conch. Icon., XVI, 1866, pl. xLvilt, fig. 260.— * PasTEL, Conch. Sam., III, 1890, p. 155. *Margaron ( Unio) housei LEA, Syn., 1870, p. 28. Siam; Cambodia. HYRIOPSIS SUTRANGENSIS L. Morlet. *Unio sutrangensis L. MORLET, Jl. de Conch., XX XVII, 1889, p. 195, pl. 1x, fig. 3. Sutrang River, Siam. HYRIOPSIS PINCHONIANUS Heude. *Unio pinchonianus HEUDE, Conch. Fluy. Nank, VIII, 1883, pl. Lx, fig. 12.— P#TEL, Conch. Sam., III, 1890, p. 163. China. (Group of Hyriopsis vagulus.) Shell elliptical, with a rather high, posterior wing, moderately solid, with two slight posterior ridges and a sulcus above them at the junc- ture of the wing. HYRIOPSIS VAGULUS Fischer.? *Unio subtrigonus SOWERBY, Conch. Icon., XVI, 1867, pl. Lv iit, fig. 292.—* PaTEL, Conch. Sam., III, 1890, p. 169 *“Margaron (Unio) subtrigonus LEA, Syn., 1870, p. 28. 'The ventral line of this shell is crooked, having a couple of curves in it, but it is not twisted. Its authors believed Arconaia to be only a section of Unio, and that the animal was essentially like that of that genus. 2>Sowerby published this species as Unio subtrigonus in the Conchologia, the name being preoccupied by Deshayes. In the errata he changed it to Unio (Monocondy- lea) cambojensis, believing it to be the same as Petit’s Psewdodon cambojensis. It certainly is not that shell, and I agree with Fischer that it is near to the Unio myer- sianus, and accept his name for it, =a ROK NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 5Sli *Unio (Monocondylaa) cambojensis SOwERBY, Conch. Icon., X VI, errata. *Pseudodon cambojensis MORELET, Ser. Conch., LV, 1875, p. 336. *Unio lamellatus HANLEY and THEOBALD, Conch. Ind., 1876, p.5, pl. 1X, fig. 6. *Unio vagulus FISCHER, Bull. Soc. Autun., IV, 1891, p. 223. Siam. (Group of Hyriopsis velthuzent.) Shell somewhat inflated, rather thin, rounded behind, winged; epi- dermis dark brown with numerous green rays; nacre iridescent, bluish white; anterior scars irregular, rather small; posterior scars rounded ; pseudoeardinals elongated, one in each valve, in the right valve there is a secondary :udimental one; laterals elongate, arcuate, one ia the right valve and two in the left. tHYRIOPSIS VELTHUZENI Schepman. * Unio velthuzent SCHEPMAN, Notes from Leyden Mus., XVII, 1895, p. 160, pl. 1v, figs. 1, la—! DroUET, J1. de Conch., XLV, 1897, p. 124. Mandai River, Borneo. (Group of Hyriopsis schlegeli.) Shell rather thin, slightly winged behind, narrowly rounded betore and angled at umbonial slope; posterior ridge high and rounded, beaks rather low; epidermis rough, blackish; hinge line curved in front, straight behind; pseudocardinals generally entire; plications below the laterals faint; nacre dull, lurid purplish or lead color. tHYRIOPSIS SCHLEGELI von Martens. * Unio schlegeli VON MARTENS, Mal. Blatt., VII, 1861, p. 55.—* KoBrext, Abh. Senck, Nat. Ges., XI, 1879, p. 421, pl. xtv.—* voN MARTENS, Noy. Conch., V, 1879, p. 192, pl. cLvutt, figs. 4, 5.—* von InerRING, Abh. Senck, Nat. Ges., XVIII, 1893, p. 156. ; * Barbala schlegeli PATEL, Conch. Sam., III, 1890, p. 175. Japan. Subgenus CAUDICULATUS Simpson, 1900. (Type, Unio caudiculatus von Martens.) Shell oval, inflated, slightly posteriorly winged, with a well-developed posterior ridge, and above it a deep, wide furrow ending in a broad, well-defined notch on the posterior slope; one pseudocardinal in the right valve and two in the left; two laterals in the left valve and one in the right. Animal unknown.’ HYRIOPSIS CAUDICULATUS Von Martens. “Unio caudiculatus VON MARTENS, Mal. Bl., XIV, 1866, p. 16.—* ScuEpmMaNn, Notes Leyd. Mus., XVIII, 1896, p. 140.—* Drougrt, J.de Conch., XLV, 1897, p. 126. “Unio infrarostratus SCHEPMAN, Notes Leyd. Mus., XVII, 1895, p. 161, pl. rv, fig. 2. Borneo. ‘According to the photographic figure this shell very closely resembles Unio ala- tus Say. ?J am in doubt as to the relationship of this species. 582 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XT. Genus CHAMBERLAINIA Simpson, 1900. (Type, Unio hainesianus Lea. ) Shell large, very solid in front, thinner behind, round or round obo- vate, without posterior ridge, alate on the post dorsal part when young ; beaks full, sculpture not seen; surface without sculpture excepting a few slightly pustulous corrugations on the posterior siope; epidermis dull, not rayed; hinge curved; pseudocardinals rather small, stumpy, two in the left valve and one in the right; laterals short, remote, the intervening hinge plate rounded, one lateral in the right valve and two in the left, the upper the smaller, and all curved upward along their inner edges; beak cavities not deep; dorsal muscle scars numerous, deep, extending from the cavity downward and forward; area outside the palleal line very wide; nacre lurid bronzy. Animal unknown. +t CHAMBERLAINIA HAINESIANA Lea. *Unio hainesianus Lua, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 92; * Jl. Ac. N. Sci. Phil., Ill, 1857, p. 289, pl. xx1, fig.1; “Obs. VI, 1857, p. 9, pl. xxi, fig. 1-— “von MARTENS, Pr. Zool. Soc. Lond., 1860, Pt.1, p.15.—* SowERBY, Conch. Icon., XVI, 1866, pl. xLvii, fig. 254.2—* MoRELET, Ser. Conch., IV, 1875, p. 312.—* Pa TEL, Conch. Sam., III, 1890, p. 154. *Margaron (Univ) hainesianus Lea, Syn., 1870, p. 28. * Unio imperialis MORELET, Rey. et Mag. Zool., XIV, 1862, p. 480. Siam. CHAMBERLAINIA PAVIEI Morelet. * Unio paviei MORELFT, J. de Conch., XX XIX, 1891, p. 241, pl. vn, fig. 3.3 Siam. +t CHAMBERLAINIA DUCLERCI Rochebrune.! “Unio duclerci ROCHEBRUNE, Bull. Soc. Phil., VII, 1882, p. 27, pl. 1, fig. 2 (in extract). to its author attuins a size of 142 mm. in height, 192 mm. in length, and 77 mm. in diameter. I have seen a very fine specimen in the Frederick Stearns collection 6 inches high and 8 in length. It is one of the most magnificent Naiades in the world. “Credited by Sowerby to the Little Arkansas River. ° Very close to C. housei, but more rounded, and having a higher wing. I do not think this can be the same as Morelet’s Unio pairanus, described in Latin in the Journal in 1865, p. 227, and unidentifiable. 4It is quite probable that this should form the type of a separate group, but the only specimens I have seen, two badly eroded valves, hardly justify me in separat- ing it. ..- : NO, 1205. SYNOPSIS OF THE NAIADES—SIMPSON, 583 Genus CRISTARIA Schumacher, 1817. (Type, Dipsas plicatus Leach. ) Barbala HUMPHREYS, Mus. Col., 1797. Dipsas LEACH, Zool. Miscellany I, 1814, p. 119. Cristaria SCHUMACHER, Essai Nouy. Syst., 1817, p. 107. Appius (LEACH), Menke. Syn., 2d ed., 1828,? p. 106. Symphynota LEA (part), Tr. Am. Phil. Soc., 1830, p. 445.—Swarnson, Mal., 1840, p. 288. Dianisotis RAFINESQUE, Cont. Monog., 1831, p.7. Dipsax V oct, Cuvier, Thierreich, III, 1834, p. 493. Barbata, SOwERBY, Conch. Man., 1842, p. 81. Clione GISTEL, Nat. Sur. Hoh. Schule Bearb., 1848. Shell generally thin, elliptical, more or less winged posteriorly; beaks rather low, sculptured with fine, somewhat doubly-looped ridges at first, and later with coarse, low, concentric bars, which are nearly par- allel with the growth lines; epidermis smooth, often somewhat rayed; hinge teeth imperfect; pseudocardinals feeble or wanting—when pres- ent consisting of a single compressed tooth in each valve; laterals single, remote, compressed, sometimes wanting in adult shells.' Subgenus CRISTARIA, Schumacher, 1817. (Type, Dipsas plicatus Leach.) Shell large, thicker in front, strongly alate posteriorly, with two or more slightly developed radial ridges on the posterior slope and a row of plications above them; hinge line regularly curved; dorsal scars forming a row running obliquely downward and forward: anterior sears often blurred, posterior faint. tCRISTARIA PLICATA Leach. * Dipsas plicatus LEACH, Zool. Miscellany, I, 1815, p. 120, pl. Lim.2—* SOWERBY, Conch. Man., 1839, fig. 142.—* CHENU, Bib. Conch, Ist ser., III, 1845, p. 15, pl. VI, fig. 1.—* MORELET, Ser. Conch., IV, 1875, p. 332.—* HEUDE, Conch. Fluy. Nank., 1879, pls. XXXII, XXXIV, LI, fig. 94. Mytilus plicatus SOLANDER, in Gray, Ann. of Phil., IX, 1825, p. 27. Appius plicatus GRAY, in Menke, Syn. Meth. Moll., 1850, p. 106. * Margarita (Dipsas) plicatus LEA, Syn., 1836, p. 47; 1838, p. 28. * Margaron ( Dipsas) plicatus LEA, Syn., 1852, p. 46; 1870, p. 74. * Unio plicatus SOwERBY, Conch. Icon., XVII, 1868, pl. Liv., fig. 280. * Dipsas plicata TROSCHEL, Arch. fiir Naturg., XITI, 1874, p. 272.—* KoBE Lt, Abh. Senck. Nat. Ges., XI, 1879, p. 429, pls. xv-XvII, xvill, fig. 1. * Barbala plicata H. and A. ADAmMs, Gen. Ree. Moll., II, 1857, p. 501, pl. cxvu, figs. 4, 4a. * Anodonta plicata SCHRENCK, Reis. und F. Am. Lande, II, 1867, p. 704, pl. XXVu, fig. 4. 1The animal has been described in Japanese, but the paper containing the descrip- tion is inaccessible to me. 2This seems to be the first authentic description of this species. It has heen claimed that the Mytilus dubius of Gmelin is this, but he refers to figures 733, pl. 82, in the eighth volume of Chemnitz, which, I am quite certain, is not the species in question. 584 PROCEEDINGS OF TH H NATIONAL MUSEUM. VOL, XXII. * Anodonta (Dipsas) plicata CLEssIN, Couch. Cab. Anodonta, 1876, p. 240, pl. x x1, figs. 1, 2. * Cristaria plicata VON IneRING, Abh. Senck. Nat. Ges., X VIII, 1893, p. 147. * Oristaria tuberculata SCHUMACHER, Ess. Nouv. Syst., 1817, p. 140, pl. xx, fig. 2. * Anodonta dipsas BLAINVILLE, Man. Mal., 1825, p. 538, pl. LXv1, fig. 2. * Symphynota bialata Lea, Tr. Am. Phil. Soc., 1830, p. 445, pl. xiv, fig. 24; * Obs., I, 1831, p.59, pl. xrv, fig. 24. * Unio bialata HANLEY, Test. Moll. 1842, p. 219; * Biv. Shells, 1843, p. 214, pl. XXII, fig. 4. * Barbala bialata CHENU, Man. 1859, p. 145, fig. 717.—* P#TEL, Conch. Sam., III, 1890, p. 175. _* Unio bialatus DESHAYES, Tr. Elem. Conch., 1839, p. 19, pl. xxx1, fig. 3.—* CaT- LOW and REEVE, Conch. Nom., 1845, p. 56.—* DesHayEs, Tr. Elem., II, 1853, p. 218, pl. Xxx1, fig. 3.—* SowERBy, Conch. Icon., XVI, 1868, pl. XLv1, fig. 247. * Anodonta magnifica CLESsIN, Conch. Cab. Anodonta, 1873, p. 123, pl. Xxxv, fig. 1. * Dipsas occidentalis HEUDE, Conch. Fluv. Nank., IX, 1885, pl. XLvt. * Barbala occidentalis P&1VEL, Conch. Sam., III, 1890, p. 175. * Barbala plicatula P# TEL, Conch. Sam., III, 1890, p. 175. China; Japan; Amurland, south probably to Cambodia. The form from Cambodia, which is referred to C. plicata, is believed by Fischer to be different, and it may be C. bellua. + CRISTARIA BELLUA Morelet. * Anodonta bellua MORELET, Rev. et Mag. Zool., XVIII, 1866, p. 167; Ser. Conch., DV, 1875, p. 331. Cambodia. + CRISTARIA HERCULEA Middendorff. Anodonta herculea MiIDDENDORFY, Bull. Phys. Math. Ac. St. Pet., VI, 1848, p. 303; Sib: Reise, II, 1851, p. 278, pl. xxi, fig. 5; xxi, figs. 1, 2; xxv, figs. 1, 2.'— *DesuayeEs, Bull. Nouv. Arch. Mus., IX, 1873, p. 1, pl. 1, fig. 1.—* WESTER- LUND, Faun. Pal., II, Pt. 7, 1890, p. 294. *Anodonta (Dipsas) herculea CLESSIN, Conch. Cab. Ano., 1875, p. 175, pl. LIx, figs. iL, G): 2 *Cristaria herculea VON IHERING, Abh. Senck. Nat. Ges., X VIII, 1893, p. 146. *Barbala herculea Pa TEL, Conch. Sam., III, 1890, p. 175. *Dipsas plicata var. clessini KOBELT, part. Abh. Senck. Nat. Ges., XI, 1879, p. 429, 2 pl. xv.? East Siberia; Amurland; North China.? +CRISTARIA SPATIOSA Clessin. “Anodon herculeus SOWERBY, Conch. Icon., X VII, 1867, pl. 111, fig. 7. “Anodonta (Dipsas) spatiosa CLESSIN, Conch. Cab. Anodonta, 1875, p. 173, pl. Lv, fig. 2. 'Plate xxvi, fig. 2, an interior view, is probably Anodonta beringiana Middendorft. 2Craspedodonta smaragdina ANTON, Verz. der Conch., 1839, p. 16, No. 592; Clessin, Conch. Cab. Ano., 1875, p. 93, pl. xx VII, fig. 2, a badly figured little shell, said to come from North America, may be a young C. herculea. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 585 *Cristaria spatiosa VON IHERING, Abh. Senek. Nat. Ges., XVIII, 1893, p. 145. *Barbala spatiosa PTEL, Conch. Sam., III], 1890, p. 175. *Dipsas plicata var. japonica Kosert, Abh. Senck. Nat. Ges., XI, 1879, p. 429, pl. xeTVALilis Japan. Subgenus PLETHOLOPHUS Simpson, 1900. (Type, Symphynota discoidea Lea. ) Shell short-elliptical, lenticular, scarcely thickened in front, with compressed beaks which are sculptured with low, wide, concentrie ridges, scarcely winged in front or behind, pointed posteriorly; epider- mis smooth, somewhat rayed; hinge teeth very feeble, often nearly wanting; dorsal scars few; muscle scars faint. Animal unknown. + CRISTARIA DISCOIDEA Lea. *Symphynota discoidea LuA, Tr. Am. Phil. Soc., V, 1834, p. 75, pl. x1, fig. 33; * Obs. I, 1834, p. 187, pl. x1, fig. 33. *“Barbala discoidea H. and A. ADAMs, Gen. Ree. Moll., II, 1857, p.501.—* CHEnu, Man., 1859, II, p. 145, fig. 716.—* PaTEL, Conch. Sam., 1890, p. 175. *Dipsas discoidea KUSTER, Conch. Cab. Unio, 1862, p. 306, pl. c, fig. 1. *Margarita (Unio) discoideus LEA, Syn., 1836, p.47; 1838, p. 28. *Unio discoideus HANLEY, Test. Moll., 1842, p. 214; * Biv. Shells, 1843, p. 214, pl. XXI, fig. 57.—* CaTLow and REEVE, Conch. Nom., 1845, p. 58. *Margaron ( Unio) discoideus LEA, Syn., 1852, p. 46; 1870, p. 74. *Unio tenuis GRAY, Griffith’s Cuv., XII, 1834, p. 601 (index), pl. xxrv, fig. 2.! * Anodonta chinensis KUSTER, Conch. Cab. Ano., 1853, p. 51, pl. XII, fig. 3. *Unio magnificus SOwERBY, Conch. Icon., XVI, 1867, pl. LVI, fig. 289. * Anodonta gruneriana CLESSIN, Conch. Cab. Ano., 1875, p. 172, pl. Lv1, figs. 3, 4. China. CRISTARIA PARVULA Heude.? *Dipsas parvulus HEUDE (part), Conch. Fluy. Nank., IV, 1878, pl. xxxu1, fig. 65. *“Barbala parvula P#TEL, Couch. Sam., III, 1890, p. 175. China. CRISTARIA REINIANA von Martens. “Cristaria reiniana VON MARTENS, Jahrb. Mal. Ges., II, 1875, p. 136, pl. m1, fig. 4. *? Dipsas reiniana Koper, Abh. Senck. Nat. Ges., XI, 1879, p. 432, pl. xu, fig. 4; XXI, fig. 2. * Anodonta reiniana VON IHERING, Abh. Senck. Nat. Ges., XVIII, 1893, p. 147.° *Barbata reiniana P&TEL, Conch. Sam., III, 1890, p. 175. - Japan. ‘A brief description is given in the index only. Gray’s and Lea’s names seem to have been published the same year, and I do not know which appeared first. I use Lea’s because it is the one generally known. “Iam doubtful whether this is more than a variety of C. discoidea. Heude’s figure on plate Lu is a very different thing, which I have called C. radiata. 3 Martens says it has distinct cardinals and laterals. 586 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. CRISTARIA GENTILIANA Heude. “Oristaria gentilianus HEupE, Conch. Fluy. Nank., VII, 1881, pl. Lut, fig. 98. *Barbala gentiliana P@TEL, Conch. Sam., III, 1890, p. 175. China. +CRISTARIA SWINHOEI H. Adams. ~ Unio swinhoei H. ADAMS, Proc. Zool. Soc. Lond., 1866, p. 319.'\—SowERBy, Conch. Icon , XVI, 1868, pl. XLtI, fig. 232.—P TEL, Conch. Sam., III, 1890, p. 169. * Anodonta swinhoet H. ADAMS, Proc. Zool. Soc. Lond., 1866, p. 446.—* CLESSIN, Conch. Cab. Anodonta, 1876, p. 125, pl. Lxxv, fig. 6.—* P#TEL, Conch. Sam., III, 1890, p. 185. * Anodon swinhoet SOwERBY, Conch. Icon., XVI, 1868, pl. xxvu, fig. 108. * Margaron (Unio) swinhoei LEA, Syn., 1870, p. 45. Formosa; Tonkin; Cambodia. Subgenus CRASSITESTA Simpson, 1900. (Type, Cristaria radiata Simpson. ) Shell rather solid, elliptic-rhomboid, with a rounded posterior ridge, scarcely winged; beaks full, sculpture not seen; epidermis bright, strongly rayed, with two conspicuous light and three dark rays on the posterior slope; hinge line curved; pseudocardinals and laterals reduced to the merest vestiges; dorsal scars only one or two in the cavity of the beaks; adductor scars faint; nacre lurid. +CRISTARIA RADIATA Simpson.? * Dipsas parvulus HEUDE (part), Conch. Fluv. Nank., VII, 1881, pl. Lm, fig. 96. China. Genus LEPIDODESMA Simpson, 1896. (Type, Unio langwilati Heude. ) Lepidodesma SIMPSON, Proc. U.S. Nat. Mus., 1896, p. 311. Shell large, thin, inflated, with a high, sharp, posterior ridge and a second fainter one above, making the hinder part widely biangulate; beaks very high and full, their sculpture, which extends over the whole shell, consisting of ridges that follow the growth lines; there are two rows of radiating nodules, one on the middle of the disk, and a stronger one on the post ridge; ligament very large, wide, covered with con- centric scales; hinge line arched; two pseudocardinals in the left valve, the anterior elongated, running inwardly across the hinge plate, and ending abruptly, with a shorter, fainter one behind it; with two strong laterals, the inner the higher, its edge reflexed upward, and suddenly better developed than is common among Cristarias, but are still quite faint. 2>Heude has figured two different species under the name of Dipsas parrulus, on plate xxxu. Ihave therefore given the last-described form the name radiata. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 587 and one lateral, which is reflexed upward; epidermis folded into the hinge, and scaly; a single dorsal scar on the inner side of each hinge plate; muscle scars united; palleal line distinct; beak cavities large and wide; nacre very dull. Animal unknown. +LEPIDODISMA LANGUILATI Heude. ~ Unio languilati HEUDE, J. de Conch., XXII, 1874, p. 116; *Conch. Fluy. Nank., I, 1875, pl. vit.—P2TEL, Conch. Sam., ITI, 1890, p. 156. ~ Lepidodesma languilati Simpson, Pr. U. 8. Nat. Mus., \ VIII, 1896, p. 311. * Cristaria megadesma VON MARTENS, 8. B. Nat. Fr., 1875, p. 3; * Mal. B1., XXII, 1875, p. 187; * Nov. Conch., IV, 1876, p. 152, pl. cxxxv, fig. 1. * Barbula megadesma P&TEL, Conch. Sam., III, 1890, -p. 175. China. LEPIDODESMA ALIGERA Heude. * Unio languilatus var. aligerus HEUDE, Conch. Fluy. Nank., III, 1877, pl. xvu, fig. 37.—* P&TEL, Conch. Sam., III, 1890, p. 156. ~ Lepidodesma aligera Simpson, Pr. U.S. Nat. Mus., XVIII, 1896, p. 311. China. Genus PILSBRYOCONCHA Simpson, 1900. (Type, Anodonta erilis Lea.) Shell elongated, elliptical, compressed, thin, with a !ow, posterior wing, narrow and rounded in front, nearly straight below, expanded at the post-basal region, pointed behind. Beaks compressed, sculptured with several coarse, low, irregularly concentric undulations, often slightly doubly looped; surface nearly smooth, shining, yellowish to ashy brownish, sometimes showing very faint rays; hinge straight or slightly curved, reduced to a mere line, often showing a faint, com- pressed, smooth tooth in front of the beaks, otherwise edentulous; nacre brilliant, silvery and iridescent; muscle scars faint. Animal pure milky white; lobes of the mantle united behind into two short siphons. ! + PILSBRYOCONCHA LINGUAFORMIS Morelet. * Anodonta lingueformis MORELET, Ser. Conch., IV, 1875, p. 329, pl. xiv, fig. 5.— * PaTEL, Conch. Sam., III, 1890, p. 181. * Margaron ( Unio) lingueformis LEA, Syn., 1870, p. 48. Siam; Cambodia. +PILSBRYOCONCHA EXILIS Lea. * Anodonta exilis Lea, Tr. Am. Phil. Soc., VI, 1839, p.81, pl. xx, fig.68; *Obs., II, 1838, p. 81, pl. xx11, fig. 68.—* TROSCHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 239.—* HANLEY, Test. Moll., 1842, p. 224; *~ Biv. Shells, 1843, p. 224.— ~H.and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 503.—* MorELET, Ser. Conch., IV, 1875, p. 327.—* CLEssin, Conch. Cab. Ano., .1875, p. 171, pl. Lv1, figs. 6-8.—* PZTEL, Conch. Sam., III, 1890, p. 179. ‘According to Deshayes, Jl. de Conch., 1875, pp. 81-85. He does not give any other characters of the soft parts. 5&8 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XX. * Margarita Bie ta) exilis LEA, Syn., 1888, p. 32. * Anodon exilis CATLOW and REEVE, Conch. Nom., 1845, p. 66. * Margaron (Anodonta) exilis Lua, Syn., 1852, p. 51; 1870, p. 82. * Monocondylea exilis PATEL, Conch! Sam., III, 1890, p. 174. * Anodonta siliqua KuSTER? Conch. Cab. Ano., 1852, p. 57, pl. xiv, r, fig. 5. * Anodonta polita Mousson, L. and Suss. Moll. Java, 1849, p. 98, pl. x1x, figs. 2, 3.— *“Mousson, Zeits. fiir Mal., VII, 1851, p. 46.—* H. and A. ADAMs, Gen. Rec. Moll., I], 1857, p.504.—* Pasrer, Conch. Sam., III, 1890, p. 183. * Margaron (Anodonta) polita LEA, Syn., 1852, p. 53. * Anodon politus SOWERBY, Conch. Icon., X VII, 1867, pl. x11, fig. 36. ~ + Monocondylaa compressa Lra, Pr. Ac. N. Sci. Phila., VII, 1863,p.190; * Jl. Ac. N. Sci. Phila., VI, 1866, p. 30, pl. x1, fig: 29; * Obs., XI, 1867, p. 34, pl. x1, fig: 29.—* CLESSIN, Gonent Cab. Ano., 1876, p. 258, pl. LxXxx, figs. 3, 4. * Pseudodon compressa CONRAD, Am. J1. Conch., I, 1865, p. 233. — * Margaron (Monocondylea) compressa Lua, Syn., 1870, p. 73. * Spatha compressa Pa&TEL, Conch. Sam., III, 1890, p. 188. * Anodon javana SOWERBY, Conch. Teo XVII, 1867, pl. x1, fig. 33. * Anodon gracilis SOWIE Conch. Icon., XVII, 1867, pl. xrv, fig. 45. * Anodon kelletti SowERBY? Conch. Icon., XVII, 1867, pl. xrx, fig. 71. *+ Anodonta sempervivens DrEsHaAyYEs, Nouv. Arch. de Mus., X, 1874, p. 120, pl. v, figs. 4, 5.—* Parser, Conch. Sam., III, 1890, p. 184. Southeastern Asia, Sumatra, Java. +PILSBRYOCONCHA CARINIFERA Conrad. * Anodonta carinifera CONRAD, Cover of Monography, No. 9, 1837.!:—TROSCHEL, Arch. fiir Naturg., 1V, 1838, Pt. 2, p. 288.—B. H. WRIGHT, Check List, 1888. Southeastern Asia, probably. PILSBRYOCONCHA LEMSLEYI Morelet. * Anodonta lemsleyi MORELET,? Ser. Conch., IV, 1875, p. 328, pl. xiv, fig. 1.—P@TEL, Conch. Sam., III, 1890, p. 181. Cambodia, Siam. PILSBRYOCONCHA SCHOMBURGKI von Martens. * Anodonta schomburgki VON MARTENS, Proce. Zool. Soc. Lond., 1860, p. 15.— *PmTEL, Conch. Sam., III, 1890, p. 184. Siam. Genus MEDIONIDUS Simpson, 1900. (Type, Unio conradicus Lea. ) Medionidus Stmpson, Pr. Ac. N. Sci. Phila., 1900, p. 77. Shell elongated, rather inflated, often arcuate when adult, sometimes having a Boe: ridge; dorsal slope and occasionally the posterior here is a specimen of Pilsbryoconcha in the Philadelphia Academy which agrees perfectly with Conrad’s description, and is probably the type. My attention was called to this by Mr. Pilsbry, who believes this to be the shell Conrad described. It is rather a small species. 2An old, elongated, rather peculiar shell. Conrad’s species may be the young of it, and Morelet believes that Martens’ 4. schomburgki is very close to his shell I have not seen a sufficient amount of material of this genus to determine with cer- tainty whether all these are valid species. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 589 portion of the shell plicately or nodulously wrinkled; epidermis smooth and bright, variegated with broken green rays and blotches; beak sculp- ture consisting of rather fine, subparallel, often broken ridges in two loops, the anterior rounded, the posterior somewhat angled, occasion- ally broken up into zigzags;' pseudocardinals small, stumpy and some- what roughened; laterals rather short, slightly curved and club-shaped, remote; dorsal cicatrices few, placed under the hinge just behind the _ beaks; anterior cicatrices rather deep; posterior cicatrices rounded, large, and well impressed; anterior part of shell somewhat thickened; female shell slightly swollen just behind the middle of the base. Animal with the inner gills wholly or in part free from the abdominal sac; marsupium occupying the central posterior part of the outer gills, sometimes extending nearly thei whole length, consisting of few to many rather large, irregular ovisacs, which are not so distinctly marked out as in Lampsilis, but which have rounded bases; mantle much thickened on its lower edge, which is dark colored and sometimes papillous. (Group of Medionidus conradicus.) Shell small, usually with a well-defined posterior ridge; posterior end and sometimes the greater part of the shell slightly wrinkled or nodu- lous; epidermis rather smooth, painted with rays broken into irregular arrow-head markings or blotches; pseudocardinals rather small and imperfectly developed; laterals of left valve separated by a narrow, shallow furrow; nacre greenish, purplish, or bluish. The male shell is often decidedly arcuate; that of the female is swollen at or behind the center of the base. Animal having the characters of the genus. +MEDIONIDUS CONRADICUS Lea. * Unio conradicus LEA, Tr. Am. Phil. Soc., VI, 1834, p. 63, pl. 1x, fig. 23; * Obs., I, 1834, p. 175, pl. 1x, fig. 23.—* FERUSSAC, Guerin. Mag., 1835, p. 29.—* HANLEY, Test. Moll., 1842, p.176; * Biv. Shells, 1843, p. 176, p]. xx11, fig. 22.—* CaTLow and REEVE, Conch. Nom., 1845, p.57.—* ConrabD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 247.—* H. and-A. Apams, Gen. Ree. Moll., II, 1857, p. 497.—*KuSTER, Conch. Cab. Unio, 1861, p. 179, pl. Lv1, fig. 5.—* SowErRBy, Conch. Icon., XVI, 1866, pl. Liv, fig. 278.—* PmTEL, Conch. Sam., III, 1890, p. 148. * Margarita ( Unio) conradicus Lea, Syn., 1836, p. 15; 1838, p. 14. * Margaron (Unie) conradicus LEA, Syn., 1852, p. 21. * Unio conradius CONRAD, Monog., X, 1838, p. 87, pl. XLVI, fig. 3. * Margaron ( Unio) conradianus LEA, Syn., 1870, p. 32. * Unio conradianus B. H. WRIGHT, Check List, 1888. Tennessee River drainage; Cahawba River, Alabama, and probably the entire Alabama River system. 'The beaks in all the specimens of Unio subtentus that I have examined were too badly eroded to make out the character of the sculpture with certainty. Ina gen- eral way they seemed to be much like those of the Conradicus group, only coarser. 590 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. +MEDIONIDUS PARVULUS Lea. *Unio parvulus La, Pr. Ac. N. Sci. Phila., IV, 1860, p.307; * Jl. Ac. N. Sci. Phila., VI, 1866, p. 45, pl. xvi, fig. 43; *Obs., XL, 1867, p. 49, pl. xvi, fig. 43.—* B. H. WriGHT, Check List, 1888. * Margaron ( Unio) parvulus LEA, Syn., 1870, p. 32. Coosa River, Alabama; Chattanooga and Swamp creeks, northwest Georgia. | MEDIONIDUS PENICILLATUS Lea. * Unio penicillatus LEa, Pr. Ac. N. Sci. Phila., IX, 1857, p. 171; ~Jl. Ac. N. Sei. Phila., IV, 1859, p. 203, pl. xx1m, fig. 85; *Obs., VII, 1859, p. 21, pl. xxii, fig. 85.—* B. H. WriGut, Check List, 1888. * Margaron (Unio) penicillatus Lua, Syn., 1870, p. 32. Chattahoochee and Flint rivers, Georgia. +MEDIONIDUS KINGI B. H. Wright. Unio kingi B. H. Wricut, Nautilus, XII, 1900, p. 138. Branch of Flint River, Baker County, Georgia. +MEDIONIDUS ACUTISSIMUS Lea. *Unio acutissimus LEA, Tr. Am. Phil. Soc., IV, 1831, p.89, pl. x, fig. 18; *Obs., I, 1834, p. 99, pl. X, fig. 18.—* Conrab, New F.W. Shells, 1834, p.67.—* FERUSSAC, Guer. Mag., 1835, p. 28.—* CONRAD, Monoy., X, 1838, p. 86, pl. XLVI, fig. 2.— * HANLEY, Test. Moll., 1842, p.177; * Biv. Shells, 1843, p. 177, pl. xxu, fig. 35.— *CaTLOW and REEVE, Conch. Nom., 1845, p. 55.—* Conran, Pr. Ac. N. Sci. Phila., VI, 1853, p. 244.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 497.— * CHENU, II]. Conch., 1858, pl. vu, figs. 3, 3a, 3b.—* SOwERBY, Conch. [con., XVI, 1866, pl. Xxxv1, fig. 189.—* B. H. Wricut, Check List, 1888.—*P&TEL, Conch. Sam., ITI, 1890, p. 1438. *Margarita ( Unio) acutissimus Lra, Syn., 1836, p. 14; 1838, p. 14. *Margaron (Unio) acutissimus Lma, Syn., 1852, p. 21; 1870, p. 32. *Unio semiplicatus KustER, Conch. Cab. Unio, 1862, p. 279, pl. xctv, fig. 4.!— *PaTEL, Conch. Sam., III, 1890, p. 167. * Unio rubellinus La, Pr. Ac. N. Sci. Phila., IX, 1857, p. 32; *J1. Ac. N. Sci. Phila., IV, 1858, p. 70, pl. xml, fig. 51; *Obs., VI, 1858, p. 70; pl. x1, ig ol * SowERBY, Conch. Icon., XVI, 1868, pl. xc, fig. 490.—* B. H. Wrieut, Check _ List, 1888.—* Pere, Conch. Sam., ITI, 1890, p. 166. *Margaron (Unio) rubellinus Lea, Syn., 1870, p. 32. Alabama River system. (Group of Medionidus walker’) Shell rather short, inflated, with a high, posterior ridge; posterior slope strongly corrugated; epidermis dark, slightly clouded; nacre red- dish or greenish. 1There is a Unio semiplicatus of Troschel in Wiegman’s Archiv. for 1841, p. 180. but I do not know what is. Kuster credits his species to Australia, but it is evidently Lea’s shell, no such species being found in Australia, NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 591 tMEDIONIDUS WALKERI B. H. Wright. “Unio walkeri B. H. Wriaut, Naut., XI, 1897, p. 91. *Lampsilis walkeri SIMPSON, Pr. Ac. N. Sci. Phila., 1900, p. 77, pl. 1, fig. 5. Suwanee River, Florida; Ocklockonee River, Georgia. (Group of Medionidus subtentus.) Shell elongate-elliptical, scarcely inflated, with an ill-defined poste- rior ridge, the posterior slope being strongly, corrugately wrinkled; beaks apparently sculptured with coarse, irregular, broken ridges, somewhat doubly looped; epidermis bright, with broken rays which sometimes form irregular patches, but are usually developed into square spots; pseudocardinals rather small, stumpy; laterals rather strong, club-shaped, generally showing traces of vertical striation; nacre dull, bluish-white. The female shell 1s very slightly inflated just behind the center of the base, the male often becomes arcuate when old. Animal unknown. tMEDIONIDUS SUBTENTUS Say. *Unio subtentus Say, Jl. Ac. N. Sei. Phila., V, 1825, p. 130; Am. Conch., I, No. 2, 1831, pl. xv.—* ConrAD, Am. J1. Sci., XX VI, 1834, p. 343, pl.1, fig. 1; * New F.W. Shells, 1834, p.71.—* FERussac, Guer. Mag., 1835, p. 26.—* MOLLER, Syn. Nov. Gen., 1836, p. 209.—* ConraD, Monog., X, 1838, p. 85, pl. XLVI, fig. 1.— *HANLEY, Test. Moll., 1842, p.176; * Biv. Shells, 18438, p. 176, pl. xx, fig. 34.— *CHENU, Bib. Conch., Ist ser., III, 1845, p. 25, pl. 1v, figs. 2, 2a, 2b.—* CaTLow and REEVE, Conch. Nom., 1845, p. 64.—* Conrab, Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.—* KusTER, Conch Cab. Unio, 1856, p. 164, pl. xtvu, fig. 4.— *H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 497.—* SowERBy, Conch. Icon., XVI, 1868, pl. Lxxu, fig. 370.—* B. H. Wrigut, Check List, 1888.—* P&TEL, Conch. Sam., III, 1890, p. 168. * Margarita (Unio) subtentus LEA, Syn., 1836, p. 13; 1838, p. 14. *Margaron ( Unio) subtentus LEA, Syn., 1852, p. 21; 1870, p. 32. *Unio subtenta DESHAYES, An. sans Vert., 2d ed., VI, 1835, p. 555; 3d ed., II, 1839, p. 675. Tennessee and Cumberland River systems. Genus NEPHRONATAS Crosse and Fischer, 1893. (Type, Unio plicatulus Charpentier. ) Nepronaias CROSSE and FISCHER, Miss. Sci., Pt. 7, II, 1893, p. 556. Shell elliptical, biangulate behind, that of the male showing a tend- ency to become arcuate with age, the female usually having a post- basal inflation and never arcuate; surface concentrically sculptured ; beaks low, with faint broken ridges which show a tendency to fall into two rounded loops; pseudocardinals generally rather compressed, rag- ged, laterals obliquely ridged; cavity of the beaks rather deep, dorsal muscle sears distinct, running in a line from the beak cavity downward and forward. Animal with the branchiwe rounded below, outer the larger behind, inner the larger anteriorly, free from the abdominal sac 592 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. for all or part of their length; mantle thickened on the edge, which is often dark colored; anal and branchial openings large and well fur- nished with papilla. Nothing is known of the marsupium of any mem- bers of this group, the animals examined probably being males; but it is most likely that when gravid the ovules will be found in distinctly marked ovisacs in the posterior part of the outer gills, something as in Lampsilis. (Group of Nephronaias medellinus.) Shell scarcely sulcate, shining, rather brightly rayed, distinctly bian- culate behind, solid, swollen; beaks rather full, with delicate sculpture; pseudocardinals solid, stumpy, trigonal; laterals heavy, somewhat club- shaped; nacre rich and soft, silvery or purple; female shell consider- ably inflated at the post-basal region, and differing somewhat from that of the male. t NEPHRONAIAS MEDELLINUS Lea. ?Unio purpuriatus Say, New Harmony, Diss. (newspaper form),January 15, 1831.' * Unio medellinus LEA, Tr. Am. Phil. Soc., VI, 1838, p. 39, pl. xu, fig.34; *Obs., II, 1838, p. 39, pl. xu, fig. 34.—* TROSCHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 236.—* HAaNLEY, Test. Moll, 1842, p. 193; * Biv. Shells, 1843, p. 193, pl. xx1, fig. 19; pl. xxi, fig. 8.—*CaTLow and REEVE, Conch. Nom., 1845, p. 61.— *CHENU, Ill. Conch., 1858, pl. xvil, figs. 6, 6a, 6b.—*H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 494.—* KustTER, Conch. Cab., 1861, p. 162, pl. XLVI, fig. 5.—* SOWERBY, Conch. Icon., XVI, 1866, pl. xxx1u1, fig. 171.—* B. H. Wricut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 158.— * FIsCHER and CROSSE, Miss. Sci., Pt. 7, II, 1894, p. 603. * Margarita (Unio) medellinus, LEA, Syn., 1836, p. 26; 1838, p. 19. * Margaron (Unio) medellinus, LEA, Syn., 1852, p. 29; 1870, p. 45. +* Unio strebeli, Lma,? Pr. Ac. N. Sci. Phila., X, 1866, p. 183; *Jl. Ac. N. Sci. Phila., VI, 1868, p. 318, pl. 1, fig. 131; *Obs., XII, 1869, p. 78, pl. LI, fig. 131.— *B. H. Wricut, Check List, 1888.—* FiscHER and CRossE, Miss. Sci., Pt. 7, II, 1894, p. 595. *Margaron (Unio) Strebeli, LEA, Syn., 1870, p. 53. State of Vera Cruz, Mexico. +NEPHRONAIAS SAPOTALENSIS Lea. * Unio sapotalenses LEA, Pr. Am. Phil. Soc., II, 1841, p.30; *Tr. Am. Phil. Soc., VIII, 1842, p. 233, pl. xx1, fig.47; * Obs., III, 1842, p. 71, pl. xx1, fig. 47.—* ConRrab, Pr. Ac. N. Sci. Phila., VI, 1858, p. 257.—*H. and A. ApaMs, Gen. Ree. Moll., II, 1857, p. 494.—* CHENU, Ill. Conch., 1858, pl. xxxiit, figs. 4, 4a, 4b.—* Sow- ERBY, Conch. Icon., XVI, 1868, pl. xt, fig. 495.—* B. H. Wrieut, Check List, ‘Believed by Conrad to be the same as Lea’s medellinus. Fischer and Crosse in Mission Scientifique (see following reference) are doubtful about this, as Say’s species was never figured, and his description does not just agree with Lea’s species. As the type is not known to be in existence I think under the circumstances, since we can not be sure of what Say described, it is best to use Lea’s name. 2 The type which is in the collection of the U. S. National Museum is, without doubt, a young medellinus. q ee te & = NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 593 re 1888.—* PmTEL, Conch. Sam., III, 1890, p. 166.—* FiscHER and Crossk, Miss. Sci., Pt. 7, II, 1894, p. 601, pl. Lx vit, figs. 2, 2a. * Margaron (Unio) sapotalensis LEA, Syn., 1852, p. 29; 1870, p. 45. Sapotal River, Vera Cruz, Mexico. (Group of Nephronaias averyi.)' Shell triangular-ovate, bluntly pointed in front, and biangulate behind, considerably inflated, irregularly suleate; umbonal region mod- erately developed; beaks sculptured with fine, irregular ridges which have a tendency to fall into two rounded loops; pseudocardinals slightly compressed, ragged; laterals having feeble, oblique striation; front part of the shell somewhat thickened; posterior part thinner; nacre dull, whitish. Animal unknown. + NEPHRONAIAS AVERYI Lea. * Unio averyi La, Pr. Ac. N. Sci. Phila., III, 1859, p. 281; * Jl. Ac. N. Sci. Phila., IV, 1860, p. 269, pl. xu1v, fig. 149; *Obs., VII, 1860, p. 87, pl. xLIv, fig. 149.— *B. H. Wriaut, Check List, 1888. * Margaron (Unio) averyt LEA, Syn., 1870, p. 36. Isthmus of Darien. + NEPHRONAIAS CALDWELLII Lea. * Unio caldwellit LEA, Pr. Ac. N. Sci. Phila., II, 1858, p.118; * Jl. Ac. N. Sci. Phila., IV, 1860, p. 265, pl. xu, fig. 145; * Obs., VII, 1860, p. 83, pl. xLu1, fig. 145.— *SoweErsy, Conch. Icon., XVI, 1868, pl. LXXxIx, fig. 477.—* B. H. Wrieut, Check List, 1888.—* Parent, Conch. Sam., III, 1890, p. 147. * Margaron (Unio) caldwellii Te Syn., 1870, p. 35. Isthmus of Darien. (Group of Nephronaias macnielit.) Shell solid, slightly suleate, biangulate behind, covered with a dull, olivaceous epidermis and having faint, bluish green rays; beaks rather full, sculpture feeble, consisting of slightly outlined ridges, somewhat doubly looped, the looped lines becoming swollen or nodulous at their bases; pseudocardinals compressed and ragged; laterals obliquely striated; nacre bluish white, very soft and brilliant, somewhat irides- cent posteriorly; male and female shells differing but slightly. Animal unknown. +NEPHRONAIAS MACNIELII Lea. * Unio macnielit LEA, Pr. Ac. N. Sci. Phila., XIII, 1869, p. 124; *J1. Ac. Nat. Sci. Phila., 1874, p. 25, pl. vu, fig. 22; *Obs., XIII, 1874, p. 29, pl. vir, fig. 22.— *B. H. Wriaat, Check List, 1888.—* Parry, Conch. Sam., III, 1890, p. 158. Nicaragua. 1T have only seen two specimens of Lea’s Unio averyi and one of his U. caldwellii, and I can not be certain as to their systematic position. In the latter the beak sculpture, which is slightly worn, is much of the character of the species of Neph- ronaias generally, and not like that of Unio, and though somewhat worn the shell shows traces on the posterior end of faint, bluish green rays. One of the former is Slightly more inflated in the post-basal region than the other. Proc. N. M. vol. xxii 38 594 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL +NAPHRONAIAS OREGONENSIS Lea.! * Unio oregonensis LEA, Pr. Am. Phil. Soc., V, 1852, p. 252; * Tr. Am. Phil. Soc., X, 1852, p. 275, pl. xx, fig. 33; *Obs., V, 1852, p. 31, pl. xxu, fig. 33.—* H. and A. ADAMS, Gen. Rec. Mol1., II, 1857, p. 494.—* MusGRAVE, Phot. Conch., 1863, pl. 11, fig. 5.—*SowersBy, Conch. Icon., XVI, 1868, pl. Lxxtv, fig. 383.—* B. H. WricuHt, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 162. * Margaron (Unio) oregonensis, LEA, Syn., 1852, p. 29; 1870, p. 45. Nicaragua. t NEPHRONAIAS ROWELLII Lea. * Unio rowellit LEA, Pr. Ac. N. Sci. Phila., III, 1859, p. 153; *J1. Ac. N. Sci. Phila., IV, 1860, p. 256, pl. XL, fig. 136; *Obs., VI, p. 74, pl. x1, fig. 136.—* SowERBY, Conch. Icon., XVI, 1868, pl. Lxxxviul, fig. 471.—* B. H. WRIGHT, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 166. * Margaron (Unio) rowellit LEA, Syn., 1870, p. 35. Nicaragua; Guatemala; Chagres River, Colombia. t NEPHRONAIAS GOASCORANENSIS Lea. * Unio goascoranensis LEA, Pr. Ac. N. Sci. Phila., II, 1858, p. 118; * Jl. Ac. N. Sci. Phila., IV, 1860, p. 258, pl. x11, fig. 139; *Obs., VIL, 1860, p. 76, pl. x11, fig. 139.— *B. H. Wrieut, Check List, 1888. * Margaron (Unio) goascoranensis LEA, Syn., 1870, p. 45. Goascoran River, Honduras. +t NEPHRONAIAS DYSONII Lea. * Unio dysonii LEA, Pr. Ac. N. Sci. Phila., XI, 1859, p.152; * Jl. Ac. N. Sci. Phila., TV, 1860, p. 252, pl. xx xix, fig. 1382; * Obs., VII, 1860, p. 70, pl. xxxIx, fig. 132.— *B. H. WriGut, Check List, 1888. * Margaron (Unio) dysonii LEA, Syn., 1870, p. 35. Honduras; Costa Rica. t NEPHRONAIAS TEHUANTEPECENSIS Crosse and Fischer. *Unio tehuantepecensis CROSSE and FISCHER, J. de Conch., XLI, 1893, p. 296.— * FISCHER and CROSSE, Miss. Sci., Pt. 7, II, 1894, p. 618, pl. LXV, figs. 3, 3a, 4. Isthmus of Tehuantepec, Oaxaca, Mexico; Honduras. (Group of Nephronaias reticulatus.) Shell evenly elliptical, shightly biangulate behind, solid and inflated ; surface covered with fine, concentric ridges and having delicate, radiat- ing furrows which cut the sulcations and form them into loops. 1I formerly believed that this species, with the one preceding and following it, ran together. More recent study, with a large amount of additional material, inclines me to think that perhaps they may be valid species. Under the name of Unio rowellit Mr. Lea has in his collection two large N. macneilii, one large rowellii, three smaller ones and several valves, and two goascoranensis, a species which is very close to the rest, but probably as good as most of the Mexican forms. I find specimens which I can scarcely refer with certainty to macnielii or oregonensis, but which seem to have to some extent the characters of both. This, with a number of the Mexican and Central American forms, is exceedingly puzzling. This species occurs with N, rowellii and macnielii, No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 595 tNEPHRONAIAS RETICULATUS Simpson. * Nephronaias reticulatus Stmpson, Pr. Ac. N. Sci. Phila., 1900, p. 77, pl. 1, fig. 3. Patook River, Honduras. (Group of Nephronaias scamnatus.) Shell elliptical to elongate, compressed, strongly sulcate, rather solid, subbiangular behind; that of the female inflated at post-base; epider- mis olive to brown, sometimes feebly rayed; beak sculpture delicate and but slightly marked, consisting of faint, parallel ridges, which show a tendency to fall into two rounded loops; hinge rather solid; pseudocardinals stumpy, ragged, laterals straight; front part of the shell solid and suddenly becoming thinner behind; nacre bluish, white, salmon, or purple. Animal unknown. tNEPHRONAIAS SCAMNATUS Morelet. * Unio scamnatus MORELET, Test. Nov., No. 1, 1849, p. 30.—* Poky, Mem. Hist. Cuba, II, 1858, p. 417.—* ARanGo, Faun. Mal, Cuba, 1878, p. 144.—* B. H. WriGHT, Check List, 1888.—* Pa:TEL, Conch. Sam., III, 1890, p. 167. * Margaron (Unio) scamnatus LEa, Syn., 1852, p. 40; 1870, p. 35. * Unio gundlachi SOwERBY, Conch. Icon., XVI, 1866, pl. xLv1, fig. 248. Cuba; Honduras? t NEPHRONAIAS GUNDLACHI Dunker. *Unio gundlachi DUNK®R,! Mal. Blatt., V, 1858, p. 228.—* ARANGO, Faun. Mal. Cuba, 1878, p. 144.—* Pa TEL, Conch. Sam., III, 1890, p. 154. Cuba. i NEPHRONAIAS AZRUGINOSUS Morelet.2 * Unio eruginosus MORELET, Test. Noviss., I, 1849, p. 29.—* B. H. WRIGHT, Check List, 1888.—* FISCHER and CROSSE, Miss. Sci., Pt. 7, II, 1894, p. 596, pl. Lx, figs. 2, 2a, 2b. River Michol, at Palenque, State of Chiapas, Mexico. 'Lea and Poey regard this as the equivalent of N. scamnatus of Morelet, while Arango believes it to be distinct. Unfortunately both species were described in Latin and not figured, but Dunker states that his species is inflated posteriorly and has a bluish nacre, and it is probable that he had before him a female shell when he wrote the description, for one of the Cuban species, which I think is gundlachi, has a bluish nacre, and the female shell is decidedly swollen at the post-basal region. In another form, which I presume is N. scamnatus of Morelet, the nacre is rather dark, the shell somewhat elongated, and that of the female does not greatly differ from the male. 2T am not positive that this species belongs here, but its form is like that of most of the members of the genus, and Crosse and Fischer state that the beaks in their specimen are entire and smooth. In several of the species of this genus the beak sculpture is very faint, while in Unio itis almost always strong. These considerations lead me to place the species here, 596 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. NEPHRONAIAS YZABALENSIS Crosse and Fischer. * Unio yzabalensis CROSSE and FISCHER, J. de Conch., XL, 1892, p. 294.—* FISCHER and CRossE, Miss. Sci., Pt.7, II, 1894, p. 597, pl. Lxrv, figs. 4, 4a, 4b.) Lake Ysabal, Guatemala. + NEPHRONAIAS RUGULOSUS Charpentier in Kuster. * Unio rugulosus CHARPENTIER in KUSTER, Conch. Cab. Unio, 1856, p. 154, pl. xiv, fig. 5.—* Pmre., Conch. Sam., ITI, 1890, p. 166.7 Habitat.—A. shell in the Lea collection, which I take to be this, is marked ‘‘ Mexico.” NEPHRONAIAS PERSULCATUS Lea.3 * Unio persulcatus Lea, Pr. Ac. N. Sci. Phila., XI, 1859, p. 153; * Jl. Ac. N. Sci. Phila., IV, 1860, p. 255, pl. x1, fig. 185; *Obs., VII, 1860, p. 73, pl. x1, fig. 135.— “egeeROAT, Phot. Conch., 1863, pl. u1, fig. 3.—"B. H. Wricut, Check PEN 1888.—* FISCHER and Grossu, Miss. Sci., Pt. 7, II, 1894, p. 614. * Margaron (Unio) persulcatus LEA, Syn., 1870, p. 36. Mexico. + NEPHRONAIAS CALIMATARUM Morelet. *Unio calimatarum MORELET, Test. Noviss., I, 1849, p. 30.—*? SowERBY, Conch. Tcon., XVI, 1868, pl. LxxIv, fig. 385.4—* B. H. Wriaur, Check List, 1888.— *PmTEL, Conch. Sam., III, 1890, p. 147.—* FiscHER and CRossE, Miss. Sci., Pt. 7, II, 1894, p. 612. Margaron (Unio) calimatarum LEA, Syn., 1870, p. 63. Mexico; Guatemala. + NEPHRONAIAS TABASCOENSIS Charpentier in Kuster. *Unio tabascoensis CHARPENTIER in KUSTER, Conch. Cab. Unio, 1856, p. 153. pl. XLIV, fig. 3°.—* B. H. Wriaut, Check List, 1888.—* CROSSE and FISCHER, Miss. Sci., Pt. 7, II, 1894, p. 611. *Margaron (Unio) tabascoensis LEA, Syn., 1870, p. 61. Mexico; Honduras; Cuba? 1Probably a mere variety of wruginosus. 2XKuster credits this species to Australia and says that it has a purple nacre. The nacre of all the Australian species is whitish, and the shell is evidently a member of this group. 3This and the related species are extremely puzzling. Although I have been able to examine a good deal of material, yet I find great variation in the specimens, and few of them acurately agree with the figures and descriptions. 4Fischer and Crosse believe this to be Morelet’s species. It looks like a short cuprinus, but Sowerby says it is solid, and has a dirty-white nacre, while cuprinus is rather thin and is copper colored throughout. 5The specimens which I have seen do not wholly agree with Kuster’s figure and description, but are nearer to that than anything else. The material in the U.S. National Museum is mostly from Honduras though there are specimens credited to Cuba. Lea referred these to NV. scamnatus Morelet. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 597 {+ NEPHRONAIAS PLICATULUS Charpentier in Kuster. *Unio plicatulus CHARPENTIER in KUSTER, Conch. Cab. Unio, 1856, p. 154, pl. XLIV, fig. 4.—*FISCHER and CROSSE, Miss. Sci., Pt. 7, II, 1894, p. 598. Mexico. + NEPHRONAIAS RAVISTELLUS Morelet. * Unio ravistellus MORELET, Test. Noviss., No. 1, 1849, p. 29.—*KustTER, Conch. Cab. Unio, 1856, pl. xu, fig. 6.—*B. H. Wricutr, Check List, 1888.—*PaTEL, Conch. Sam., III, 1890, p. 165.—*FIscHER and CRossE, Miss. Sci., Pt. 7, II, 1894, p. 609, pl. LX1, figs. 4,5, and 5a. *Margaron (Unio) ravistellus LEA, Syn., 1870, p. 40. Guatemala. + NEPHRONAIAS VELLICATUS Reeve. * Unio vellicatus REEVE, Conch. Icon., XVI, 1865, pl. x x11, fig. 103.—*B. H.WRIGHT, Check List, 1888.—*PaTEL, Conch. Sam., III, 1890, p. 171.—*FiscHEeR and Crosse, Miss. Sci., Pt. 7, II, 1894, p. 610. Guatemala. NEPHRONAIAS MELLEUS Lea. *Unio melleus LEA, Pr. Ac. N. Sci. Phila., XI, 1859, p. 152; *J1l. Ac. N. Sci. Phila., IV, 1860, p. 250, pl. xxxvuiil, fig. 129; *Obs. VII, 1860, p. 68, pl. xxxvull, fig. 129.—*REEVE, Conch. Icon., XVI, 1865, pl. xx1, fig. 92.—*P TEL, Conch. _Sam., III, 1890, p. 158. *Margaron (Unio) melleus LEA, Syn., 1870, p. 35.! Mexico or Central America, no doubt. GENUS GLEBULA Conrad 1853. (Type, Unio rotundata Lamarck. )? Glebula CONRAD, Pr. Ac. N. Sci. Phila., 1853, p. 268. Shell solid, much inflated, short elliptical, bluntly pointed and slightly biangulate behind, with a low, posterior ridge; female shell swollen at post base; beaks compressed, the sculpture not seen; epidermis brown- ish, clothlike; pseudocardinals divided into irregularly radiating, gran- ular lamina, sometimes to the number of a dozen or more in each valve; hinge plate reduced to a mere rounded line behind the pseudocardi- nals; laterals short, remote, anterior adductor scars deep, smooth; there is in each valve only a single, large, semicircular posterior scar ‘Tam not certain just where this and the preceding species should be placed. This remark can be applied to a number of other forms placed in this genus. 27 have examined a number of animals of the only species of this curious genus, but regret that they were badly decayed, and that none were gravid. In one speci- men several ovisacs were distended with gas, and these were separated by a deep sulcus. This fact, the union of the inner gills with the abdominal sac, and the post- basal swelling seen on some shells incline me to believe that it is a highly organized species. 598 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. with a straight edge in front; dorsal scars numerous, distinct, placed back of the pseudocardinals; cavity of the beaks not deep or com- pressed; nacre dull lurid to purplish brown. Animal with gills nearly equal in size, inner slightly the larger in front, - united the whole length to the abdominal sac; ovisacs apparently separated from each other by a sulcus as in Lampsilis; palpi very large, wide, wrinkled; mantle having a wide, slightly thickened border, double edged, the inner being beautifully toothed; branchial opening papillose; anal crenulate; foot small; whole animal the color of the nacre. + GLEBULA ROTUNDATA Lamarck. * Unio rotundata LAMARCK, An. sans Vert., VI, 1819, p. 75.—*LEA, Obs., I, 1834, p. 201. *Glebula rotundata CONRAD, Pr. Ac. N. Sci. Phila., 1853, p. 268. * Unio rotundatus HANLEY, Test. Moll., 1842, p. 201; *Biv. Shells, 1843, p. 201, pl. XXIH, fig. 30.—*CaTLow and REEVE, Conch. Nom., 1845, p. 63.—*CONRaD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 257.—*H. and A. ADAMS, Gen. Rec. Moll., IT, 1857, p. 492.—*KusTER, Conch. Cab. Unio, 1861, p. 256, pl. LXxxvVI, fig. 4.— *REEVE, Conch. Icon., XVI, 1865, pl. x x11, fig. 106.—*B. H. WricuT, Check List, 1888.—*PmTEL, Conch. Sam., III, 1890, p. 166.—*CaLt, Tr. Ac. Sci. St. Louis, VII, 1895, p. 47, pl. rx. * Margarita (Unio) rotundatus Lia, Syn., 1836, p. 33; 1838, p. 23. * Margaron (Unio) rotundatus LEA, Syn. 347, 1852, p. 34; 1870, p. 55. * Unio suborbiculata LAMARCK, An. sans Vert., VI, 1819, p. 81.—*LEa, Obs., I, 1834, p. 201.—*DEsHAYES, An. sans Vert., 2d ed., VI, 1835, p. 546; 3d ed., II, 1839, p. 671. *Unio suborbiculatus FERUSSAC, Guer. Mag., 1835, p. 26. Unio glebulus Say, Transylvania J1., IV, 1831, p. 526.—Say, Am. Conch., No. IV, 1832, pl. xxx1v; No. V, 1832, p. 4 (of cover).—ConraD, New F. W. Shells, 1834, p. 69.—CHENU, Bib. Conch., Ist ser., III, 1845, p. 46, pl. x1, figs. 10-12.— SowERBY, Conch. Icon., XVI, pl. LXxIv, fig. 384. *Unio glebulus P@TEL, Conch. Sam., III, 1890, p. 154. *Unio subglobosus LEA, Tr. Am. Phil. Soc., V, 1834, p. 30, pl. 11, fig. 3; *Obs., I, 1834, p. 142, pl. 1. fig. 3.—*SowrErBy, Conch. Icon., XVI, 1868, pl. LxIv, fig. 321. *Unio granadensis CONRAD,! Pr. Ac. N. Sci. Phila., VII, 1855, p. 256.—* B. H. Wricut, Check List, 1888. Louisiana; eastern Texas; Rio Grande River; Escambia County, Florida. 1Conrad says itis suboval, with the disks somewhat flattened, with minute, radiat- ing lines extending to the tips of the beaks. The rotundata sometimes shows radi- ating ridges at the beaks in eroded specimens. He also states that the nacre of his species is purple. The description therefore fits Lamarck’s species perfectly, though I have never known the species to come from so far west asthe Rio Grande— Conrad’s locality. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 599 Genus OBOVARIA Rafinesque, 1819. (Type, Unio retusa Lamarck.) Obovaria RAFINESQUE, J. de Phys. Chim. Hist. Nat., 1819, p. 426.! Shell short, oval, rounded or retuse, solid, inflated, thick in front, thinner behind, with high beaks which are sculptured with very faint, irregular, often broken and slightly nodulous ridges which show a ten- dency to fall into two loops, the posterior often open behind; epidermis dull, brownish, silky or clothlike, rarely rayed, rays indistinct; female shell but slightly inflated in the post-basal region, commonly having a shallow furrow or a flattened area at the posterior end; pseudocardinals solid, stumpy; laterals short, club-shaped; anterior and posterior cica- trices deep and distinct; nacre bluish white or purple. Animal with very short gills, the inner united to the abdominal sac throughout; marsupium projecting far below the rest of the branchize and occupying the posterior portion of the outer gills, dolabriform or kidney-shaped; mantle with a wide, thickened double-edged border, the inner edge of which is often slightly toothed at its postbasal part. Subgenus OBOVARIA Rafinesque, 1819. (Type, Unio retusa Lamarck. ) Shell retrose to short oval; beaks high, central; pseudocardinals rarely parallel with the laterals; cavity of the beaks deep, subcom- pressed; nacre bluish white or purple. Animal with the characters of the genus. +OBOVARIA RETUSA Lamarck. *Unio retusa Lamarck, An. sans Vert., VI, 1819, p.72.—FERUSSAC, Cuer. Mag., 1835, p. 28.—DESHAYES, An. sans Vert., 2d ed., VI, 1835, p. 534; 3d ed., II, 1839, p. 668. *Unio retusus CONRAD, Monog., II, 1836, p. 19, pl. vim1.—* REEVE, Conch. Syst., I, 1841, p.118, pl. Lxxxvul, fig. 16.—* HaNnLEy, Test. Moll., 1842, p. 202; *Biv. Shells, 1843, p. 202, pl. x x1, fig. 11.—* CaTLow and REEVE, Conch. Nom., 1845, p. 63.—* KusTER Conch. Icon. Cab. Unio, 1852, p. 58, pl. x11, fig. 2.—* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 256.—* SowERBy, Conch. Icon., XVI, 1868, pl. Lxx1, fig. 363.—* CaLkins, Pr. Ottawa Ac. Sci., 1874, p. 44.—*B. H. WriGut, Check List, 1888.—* P&aTEL, Conch. Sam., IIT, 1890, p. 165.—* Cat, Tr. Acad. Sci. St. Louis, VII, 1895, p. 45, pl. vir. * Margarita (Unio) retusus LEA, Syn., 1836, p. 34; 1838, p. 23. *Margaron (Unio) retusus Lm, Syn., 1852, p. 35; 1870, p. 56. *Unio torsus POTIEZ and MICHAUD, Gall. Moll., 1844, p. 149, pl. Lvu, figs. 1, 2. Ohio, Cumberland, and Tennessee river systems. 17 am utterly unable to guess as to what Rafinesque’s first species (Obovaria obo- valis) is, and the second (0. torsa) is either the Unio retusa of Lamarck or a variety of Lea’s U. circulus with purple nacre, I can not be certain which- Which of these two nearly related species it may be, I consider it sufficient to establish the genus, his description being applicable. 600 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. tOBOVARIA CIRCULUS Lea. * Unio circulus LEA, Tr. Am. Phil. Soc., III, 1829, p. 433, pl. rx, fig. 145! *Obs., I, 1834, p. 47, pl. 1x, fig. 14.—SHort and Eaton, Transylvania J1., 1831, p. 77.— * DESHAYES, An. sans Vert., 2d ed., VI, 1835, p. 549; 3d ed., II, 1839, p. 672.— * ANTON, Verz. der Conch., 1839, p. 14.—* Hanury, Test. Moll., 1842, p. 201; * Biv. Shells, 1843, p. 201, pl. xx, fig. 23.—* CarLow and REEVE, Conch. Nom., 1845, p. 57.—* KUSTER, Conch. Cab. Unio, 1852, p. 41, pl. vi, fig. 2.—* CHENU, Ill. Conch., 1858, pl. xvi, figs. 1, la, 1b.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 492.—* REEVE, Conch. Icon., XVI, 1865, pl. xxvil, fig. 135.—* B. H. WriGut, Check List, 1888. * Margarita (Unio) circulus LEA, Syn., 1836, p. 33; 1858, p. 22. * Margaron ( Unio) circulus Lma, Syn., 1852, p.34; 1870, p. 55. *Unio subrotundus FERUSSAC, part, Guer. Mag., 1835, p. 28.2—ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 258. *Unio subrotundus Raf. v. circulus Pa TEL, Conch. Sam., III, 1890, p. 168. * Mya rotunda Woop, Index Test. (Rev.), 1856, p. 199, pl. 1, Supp., fig.1. Ohio, Tennessee and Cumberland river systems; southeast Louisiana; Alabama and Tombigbee drainage? Reported from Michigan and the St. Lawrence drainage, but the forms in this area are probably O. leibii, which is perhaps only a variety of O. circulus. tOBOVARIA TINKERI B. H. Wright. * Unio tinkeri B. H. Wrigut, Nautilus, XIII, 1899, p. 7. - *Obovaria tinkert Simpson, Pr. Acad. Nat. Sci. Phila., 1900, p. 78, pl. rv, fig. 3. Tombigbee River, Alabama; Columbus, Mississippi. | OBOVARIA LENS Lea.’ * Unio lens Lua, Tr. Am. Phil. Soc. Phila., IV, 1831, p. 80, pl. vi, fig. 10; * Obs. I, 1834, p. 90, pl. vii, fig. 10.—*FERuUSsSAC, Guer. Mag., 1835, p. 26.—* HANLEY, Test. Moll., 1842, p. 201; * Biv. Shells, 1843, p. 201, pl. xx1, fig. 4.—* CaTLow and REEVE, Conch. Nom., 1845, p. 60.—* CHENU, II]. Conch., 1856, pl. vim, figs. 10, 10a, 10).—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 492.— * REEVE, Conch. Icon., XVI, 1865, pl. xxvu, fig. 134.—*SowrERBy, Conch., Icon., XVI, 1866, pl. xxxvil, fig. 200.—* B. H. Wrient, Check List, 1888,.— * PATEL, Conch. Sam., III, 1890, p. 157. * Margarita ( Unio) lens Lea, Syn., 1836, p. 33; 1858, p. 22. * Margaron (Unio) lens LEA, Syn., 1852, p, 84; 1870, p. 55. *? Unio levigatus Say, Am. Conch., VI, 1834.—Conrab, New F. W. Shells, 1834, p. 70.—CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 251. 1 The figured type has a purple nacre. 2 Ferussac makes this = U. orbiculatus Hildreth also. 2 This is sometimes considered asynonym of O. circulus. The two species are exces- sively variable in form, and both often have a pink or purplish nacre. While indi- viduals may occasionally be found which can only be referred to either species with doubt, the majority of specimens can readily be determined, and Dr. V. Sterki informs me that he has found differences in the animals of the two. As I have only been able to examine the soft parts of young specimens I have not detected any differential characters in them. rR ery § Sin) NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 601 ,OBOVARIA LENS var. DEPYGIS Conrad. *Unio depygis CONRAD, Am. J1. Conch., II, 1866, p. 107, pl. x, fig. 1.—B. H. Wrrent, Check List, 1888. Ohio River drainage; southern Michigan. tOBOVARIA UNICOLOR Lea.! * Unio unicolor Lma, Tr. Am. Phil. Soc., [V, 1845, p. 163; *Tr. Am. Phil. Soc., IX) 1848, p. 74, pl. 1v, fig. 12; * Obs., IV, 1848, p. 48, pl. Iv, fig. 12.—* Conran, Pr. Ac. N. Sci. Phila., VI, 1853, p. 259.—* H. and A. ADAms, Gen. Rec. Moll., TI, 1857, p. 492.—* B. H. Wricut, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 171. *Margaron (Unio) unicolor LEA, Syn., 1852, p. 34; 1870, p. 55. Mississippi and Alabama, in streams flowing into the Gulf. TOBOVARIA LEIBII Lea.? “Unio leibit Lea, Proc. Acad. Nat. Sci. Phila., VI, 1862, p. 168; * Jl. Ac. N. Sci. Phila., VI, 1866, p. 44, pl. xv, fig. 42; Obs., XI, 1867, p. 48, pl. xv, fig. 42—* B. H. WRIGHT, Check List, 1888. —* Margaron (Unio) leibii Lea, Syn., 1870, p. 36. Lake Erie and streams falling into it; southern Michigan; ?Sequatchie River, Tennessee. tOBOVARIA ROTULATA B. H. Wright. *Unio rotulatus B. H. WRriGut, Naut., XIII, 1899, p. 22. * Obovaria rotulata SIMPSON, Pr. Ac. N. Sci. Phila., 1900, p. 78, pl. Iv, fig. 2. Kseambia River, Escambia County, Florida. Subgenus PSEUDOON Simpson, 1900. (Type, Unio ellipsis Lea.) Shell elliptical, inflated, solid, that of the males slightly pointed at the upper posterior part; epidermis brownish or blackish, rayless or very feebly rayed, beaks anterior; pseudocardinals solid, stumpy, or slightly elongate in age, and showing a tendency toward being parallel with the laterals; cicatrices deep; nacre silvery, iridescent posteriorly. Animal with mantle having a wide, thickened, double border, the inner edge being toothed throughout below; gills small; marsupium not reaching to the posterior end of the outer branchiz, though extend- ing quite well forward; ovisacs rather numerous, large and distinct, tinted with purple below; anal and branchial openings finely toothed. 1The type is a young female, somewhat broken, and besides this Lea has a shell which he has so named that I believe is O. castaneus. Under the name of Unio lens (Cat. No. 85743, U.S.N.M.) he has a young shell from Jackson, Mississippi, which is a young male unicolor. The species grows to the size of O. lens, but shows dull rays and is more inflated than that species. 2 Dr. Lea states that the type is from Erie County, Michigan. There is no county of that name in the State, and his specimens may be from Erie County, Ohio. I am very doubtful whether it is more than a dwarf variety of U. circulus, as specimens have been seen from Tennessee which seem to stand between the two forms. - 602 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. + OBOVARIA ELLIPSIS Lea. * 2Unio brevialis SOWERBY, Rec. and Foss. Shells, XVI, fig. (no date). * Unio ellipsis LEA, Tr. Am. Phil. Soc., III, 1828, p. 268, pl. tv, fig.4; * Obs., I, 1834, p- 10, pl. Iv, fig. 4. -SHortT and EaTon, Transylvania Jl., 1831, p. 75.—* Say, Am. Conch. I, No. II, 1831.—* DesHayeEs, An. sans Vert., 2d ed., VI, 1835, p. 547; 3d ed., II, 1839, p. 672.—* HanLEY, Test. Moll., 1842, p. 188; * Biv. Shells, 1843, p. 188, pl. xx1, fig. 7.—* PoTiEz and MicHAUD, Gall. Moll., 1844, p. 150, pl. ivi, figs. 1, 2.—*CaTLow and REEVE, Conch. Nom., 1845, p. 58.— * CHENU, Bib. Conch., Ist ser., III, 1845, p. 22, pl. rv, figs. 1, la, 1b.—* KusTER, Conch. Cab. Unio, 1852, p. 43, pl. vim, fig. 4.—* CHENU, Ill. Conch., 1858, pl. xvill, figs. 1, la, 1b.—* H. and A. ADAmMs, Gen. Rec. Moll., II, 1857, p. 495.— *SOWERBY, Conch. Icon., XVI, 1868, pl. Lxxx, figs. 4, 24.—* CALKINS, Pr. Ottawa Acad. Sci., 1874, p. 42.—* LATCHFORD, Tr. Ottawa Field Nat. Club, 1882, p. 50.—* B. H. Wrigut, Check List, 1888.—* PaTEL, Conch. Sam., ITI, 1890, p. 151. * Margarita ( Unio) ellipsis LEA, Syn., 1836, p. 22; 1838, p. 18. * Margaron (Unio) ellipsis LEA, Syn., 1852, p. 26; 1870, p. 41. * Unio triangularis Say, Am. Conch., VI, 1834. * Unio olivarius CONRAD, New F. W. Shells, 1834, p. 70.—* FERussac, Guer. Mag., 1835, p. 28. * Unio taitianus SOWERBY, Conch. Icon., XVI, 1868, pl. Lxvil, fig. 338. * Unio pealei Lua, Pr. Ac. N. Sci. Phila., I, 1871, p.191; *J1. Ac. N. Sci. Phila., VIII, 1874, p. 26, pl. vull, fig. 23; *Obs., XIII, 1874, p.30, pl. vi, fig. 23.—* B. H. WRIGHT, Check List, 1888. Upper Mississippi system as far south as the Tennessee and Arkansas rivers; St. Lawrence drainage area. t OBOVARIA CASTANEA Lea. *Unio castaneus LEA, Tr. Am. Phil. Soc., IV, 1831, p. 91, pl. x1, fig. 215! *Obs., I, 1834, p. 101, pl. x1, fig. 21.—*Conrapb, New F. W. Shells, 1834, p. 68.— * FERUSSAC, Guer. Mag., 1835, p. 28.—* HANLEY, Test. Moll., 1842, p.188; Biv. Shells, 1843, p. 188, pl. xxu1, fig. 30.—*CaTLOw and REEVE, Conch. Nom., 1845, p. 57.—* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 246.—*H. and A. ApaMs, Gen. Rec. Moll., II, 1857, p. 495.—* CHENU, Ill. Conch., 1858, pl. x1, figs. 5, 5a, 5b.—* B. H. Wricut, Check List, 1888.—* P&Te.L, Conch. Sam., III, 1890, p. 147. * Margarita (Unio) castaneus Lea, Syn., 1836, p. 22; 1838, p. 18. *Margaron (Unio) castaneus LEA, Syn., 1852, p. 26; 1870, p. 41. Streams flowing into the Gulf of Mexico, from the Alabama River west to the Nechez. The following species are unfigured and indeterminable. *Obovaria cordata RAFINESQUE, Ann. Gen. Sci. Brux., V, 1820, p. 312, pl. LXxx11, figs. 6, 7. *Obovaria stegaria RAFINESQUE, Ann. Gen. Sci. Brux., V, 1820, p. 312, pl. LXXxu, figs. 4, 5. 1The name castaneus was applied to some Unio which I am unable to determine, by Rafinesque in a continuation of a monograph on the Bivalve Shells of the River Ohio, etc., in October, 1831. According to Scudder, Lea’s name was published the latter part of the same year, but I have no means of knowing which appeared first. Under the circumstances I use Lea’s name. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 603 * Obovaria striata RAFINESQUE, Ann. Gen. Sci. Brux., V, 1820, p. 311. *Obovaria torsa RAFINESQUE, Ann. Gen. Sci. Brux., V, 1820, p. 312, pl. LXxx1r, figs. as *Obliquaria retusa RAFINESQUE, Ann. Gen. Sci. Brux., V, 1820, p. 306, pl. Lxxx1, figs. 19, 20. Genus PLAGIOLA (Rafinesque, 1819) Agassiz. (Type, Unio securis Lea. ) Plagiola RAFINESQUE, J.de Phys. Chim. Hist. Nat., 1819, p.426.—Agcassiz, Arch. fiir Nat., 1852, p. 48, redefined. Shell triangular ovate, somewhat inflated, solid, with a distinet and often sharp posterior ridge; surface concentrically sculptured; umbonal area Somewhat flattened; beaks high, sculptured with delicate, parallel, doubly looped ridges, the anterior loop rounded, the posterior angular ; pseudocardinals ragged; laterals club-shaped, straight or slightly curved; cavity of the beaks moderate, often somewhat compressed; nacre silvery; female shell more or less inflated at postbasal region. Animal with the outer gills narrow in front, wide behind; inner gills wide in front, posteriorly free or united to abdominal sac; marsupium occupying the posterior part of the outer gills, but not extending quite to the hinder end, consisting of well-marked ovisaecs which are rounded below; a distinct sulcus extends the whole length of the kidney-shaped marsupium at the inside and outside at some distance above its base; mantle edge thickened and somewhat doubled, in some cases toothed or fringed below. '. Subgenus PLAGIOLA (Rafinesque, 1819) Agassiz. Shell solid, surface irregularly concentrically ridged; epidermis smoothish, but here and there wrinkled; painted with larger and smaller scattered rays, which are generally broken into irregular lunate or squarish blotches; hinge heavy and strong; hinge plate wide and flat; female shell smaller than the male, more inflated, and swollen at post- basal region. e Animal with the branchie rounded below, inner the larger, wholly or partly free from the abdominal sac; marsupium large, projecting far below the inner gills; mantle very thin, dark on its thickened, fringed double edge; anal opening with very small papille. tPLAGIOLA SECURIS Lea. *? Obliquaria (Plagiola) depressa RAFINESQUE, Ann. Gen. Sci. Phys. Brux., 1820, p. 302, pl. xxx1, figs. 5-7.} *Unio securis LEA, Tr. Am. Phil. Soc., ILI, 1829, p. 437, pl. x1, fig. 17; *Obs., I, 1834, p. 437, pl. x1, fig. 17.—* DEsHayYEs, Encyc. Meth., II, 1830, p. 578.— SHORT and EaTon, Transylvania Jl., 1831, p. 77.—*DESHAYES, An. sans ' Rafinesque’s name depressa, for what is probably a male of this species, has prece- dence over Lea’s name, but it was used previously by Lamarck for an Australian Unio. Rafinesque placed this species in his genus Obliquaria and the subgenus Plagiola, but after giving the name Obliquaria depressa he calls it U. depressa in paren- thesis. 604 PROCEEDINGS OF THE NATIONAL MUSEUM. —_-vou.xxu. Vert., 2d ed., VI, 1835, p.550; 3d ed., II, 1839, p. 673.—* HANLEY, Test. Moll., 1842, p. 184; * Biv. Shells, 1843, p. 184, pl. xx, fig. 51.—* CaTLow and REEVE, Conch. Nom., 1845, p. 64.—* CHENU, Ill. Conch., 1858, pl. xvi, figs. 4, 4a, 4b.— *H. and A. ADaAms, Gen. Rec. Moll., II, 1857, p. 496.—*CHENU, Man., II, 1859, p. 138, fig. 671.—* SowERBY, Conch. Icon., XVI, 1868, pl. Lx1, fig. 304.— *B. H. Wrieut, Check List, 1888. * Margarita (Unio) securis LEA, Syn., 1836, p.19; 1838, p. 16. *Margaron (Unio) securis LEA, Syn., 1852, p. 24; 1870, p. 37. *Plagiola securis SmirH, Bull. U.S. Fish Com., 1899, p. 291, pl. Lxxx. *Unio lineolata Say, Am. Conch., VI, 1834. -*Plagiola lineolata AGassiz, Arch. fiir Nat., I, 1852, p. 48. *Unio lineolatus CONRAD, New F. W. Shells, 1834, p. 70.—* FERUSSAC, Guer. Mag. 1835, p. 28.—* ConraAD, Am. Conch. (continuation), VII, pl. Lx viii (no date).— * CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 251.—* KustER, Conch. Cab. Unio, 1861, p. 171, pl. L111, figs. 1, 2. Mississippi drainage south into Arkansas; west into eastern Iowa and Kansas; Tombigbee and Alabama river systems. Subgenus AMYGDALONAIAS Crosse and Fischer. 1893. (Type, Unio cognatus Lea.) Shell inflated, decidedly truncated at the posterior slope, surface slightly concentrically sculptured; posterior ridge sharp and well defined; epidermis shining, sometimes wrinkled looped, and painted with a beautiful pattern of broken or arrow-marked rays; area of the beaks flattened off in the direction of the axis of the shell, but not compressed; beak sculpture delicate, somewhat broken and doubly looped, the anterior loop rounded, the posterior sharp below, the ribs fading out where they cross the posterior ridge; hinge delicate, pseudo- cardinals rather compressed, high, and ragged; hinge plate narrow; female shell very slightly swollen at post base. Animal with branchize more or less free from the abdominal sac; mar- supium consisting of numerous distinct ovisacs, and having a well- marked sulcus extending around it at some distance above its base; mantle thickened and doubled on its edge, which has dark papille. (Group of Plagiola elegans.) Shell short, triangular oval, inflated, with a very sharp posterior ridge, extending from the beaks to the hinder point of the shell; male and female shells scarcely distinguishable, both being much expanded in the basal region. tPLAGIOLA ELEGANS Lea. *Unio elegans Lua, Tr. Am. Phil. Soc., IV, 1851, p.83, pl. rx, fig. 13; * Obs., I, 1834, p. 93, pl. 1x, fig. 18.—* HanLey, Test. Moll., 1842, p. 183; * Biv. Shells, 1843, p. 183, pl. Xx1, fig. 33.—* CaTLOw and REEVE, Conch. Nom., 1845, p.58.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 495.—* CHENU, Il. Conch., 1858, pl. xv, figs. 3, 3a, 3b; * Manual, II, 1859, p. 138, fig. 672.—* SowERBy, Conch. Icon., XVI, 1868, pl. LXxtv, p. 380.—* CALKIns, Pr. Ottawa Ac. N. Sci., 1874, p. 42.— *B.H. Wricut, Check List, 1888. ; *Margarita (Unio) elegans LEA, Syn., 1836, p. 18; 1838, p. 16. * Margaron (Unio) elegans LA, Syn., 1852, p. 23; 1870, p. 36. Sap htesvt No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 605 *Plagiola elegans BAKER, Moll. Chicago, Pt. 1, 1898, p. 91, pl. xx1, fig. 1. Unio truncatus Say, Am. Conch., VI, 1834.—* FERussAC, Guer. Mag., 1835, p. 27.— *ConrAD, Am. Conch. (continuation), Pt. 7, pl. LxviI (no date); *Pr. Ac. N. Sci. Phila., VI, 1853, p. 259.—* KusTER, Conch. Cab., 1861, p. 174, pl. Lv, figs. 2, 3. * Unio truncatus RAFINESQUE Vat. elegans. * PATEL, Conch. Sam., III, 1890, p. 170. Mississippi drainage generally; Michigan; Lake Michigan; south- west to Trinity River, Texas. (Group of Plagiola donaciformis.) Shell small, elongated, triangular oval; posterior ridge generally well defined but rarely sharp, having broken green rays which form chev- rons or blotches on a lighter ground; female shell somewhat inflated in the post-basal region. : +PLAGIOLA DONACIFORMIS Lea. * Unio donaciformis LEA, Tr. Am. Phil. Soc., ILI, 1828, p. 267, pl. 1v, fig.3; *Obs., I, 1834, p. 9, pl. Iv, fig. 3.—* FERUSSAC, Guer. Mag., 1835, p. 27.—* DESHAYES, An. sans Vert. 2d ed., VI, 1835, p. 547; 3d ed., II, 1839, p. 672.—* HANLEY, Test. Moll., 1842, p. 183; * Biv. Shells, 1843, p. 183, pl. xx, fig. 41.—* CaTLow and REEVE, 1845, p. 58.—* CHENU, Ill. Conch., 1858, pl. x1, figs. 4, 4a, 4b.—* B. H. WriaGuat, Check List, 1888. 5 * Margarita (Unio) donaciformis LEA, Syn., 1836, p. 18; 1838, p. 16. * Margaron (Unio) donaciformis LEA, Syn., 1852, p. 24; 1870, p. 36. * Plagiola donaciformis BAKER, Moll. Chicago, Pt. 1, 1898, p. 92, pl. x11, fig. 4. * Unio zigzag LEA, Tr. Am. Phil. Soc., III, 1829, p. 440, pl. x11, fig. 19; *Obs., I, 1834, p. 54, pl. xu, fig. 19.—SHorr and Eaton, Transylvania J1., 1831, p. 79.— *DESHAYES, An. sans Vert. 2d ed., VI, 1835, p.551; 3d ed., II, 1839, p. 673.— * HANLEY, Test. Moll., 1842, p. 183; * Biv. Shells, 1843, p. 183, pl. xu, fig. 42.— *CaTLow and REEVE, Conch. Nom., 1845, p. 65.—* KusTErk, Conch. Cab. Unio, 1852, p. 42, pl. vit, fig. 83—H. and A. ADAMS, Gen. Rec. Moll., 1857, p. 495.— *CHENU, Il]. Conch., 1858, pl. vim, figs. 8, 8a, 8b; Man., 1859, II, p. 138, fig. 670.—* SOWwERBY, Conch. Icon., XVI, 1866, pl. XX XIX, fig. 215.—* CALKINS, Pr. Ottawa Ac. Sci., 1874, p.46.—* B. H. Wrieut, Check List, 1888.—* Pa: TEL, Conch. Sam., III, 1890, p. 172. * Margarita (Unio) zigzag LEA, Syn., 1836, p.18; 1838, p. 16. * Margaron (Unio) zigzag LEA, Syn., 1852, p. 24; 1870, p. 36. * Unio nervosa CONRAD, New F. W. Shells, 1834, p. 70. * Unio nervosus SAY, Am. Conch., VI, 1834.—* FERussac, Guer. Mag., 1835, p. 27.— *ConraAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 253.—* KustER, Conch. Cab. Unio, 1861, p. 175, pl. tv, fig. 4. Mississippi drainage generally; Alabama River area; southwest to the Trinity River, Texas; Michigan. Seems to be gradually replaced in the southwest by P. macrodon, and there are specimens which can scarcely be assigned with certainty to either species. +PLAGIOLA MACRODON Lea. *Unio macrodon LEA, Pr. Ac. N. Sci. Phila., III, 1859, p. 154; *J1. Ac. N. Sci. Phila., VI, 1862, p. 193, pl. xxvi, fig. 262; *Obs., IX, 1863, p. 15, pl. xxvi, fig. 262.— * 2? SowERBY, Conch. Icon., XVI, 1868, pl. Lxxxviul, fig. 437.—* B. H. WRIGHT, Check List, 1888.—* P&#TeL, Conch. Sam., III, 1890, p. 158. *Margaron (Unio) macrodon LEA, Syn. 1870, p. 37. astern Texas, northward probably into Kansas. 606 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXU. tPLAGIOLA COGNATA Lea. *Unio cognatus LEA, Pr. Ac. N. Sci. Phila., IV, 1860, p. 306; *J1. Ac. N. Sci. Phila., IV, 1860, p. 368, pl. Lxv, fig. 193; * Obs., VIII, 1860, p. 50, pl. Lxv, fig. 193.— * SOWERBY, Conch. Icon., XVI, 1866, pl. xxxIx, fig. 214.—* B. H. WRIGHT, Check List, 1888.—* F1iscHER and CRossg, Miss. Sci., Pt. 7, II, 1894, p. 602. *Margaron (Unio) cognatus LEA, Syn., 1870, p. 43. Rio Salado, New Leon, Mexico. Subgenus PIYCHODERMA Simpson, 1900. (Type, Unio cyrenoides Philippi. ) Shell triangularly ovate or rounded, solid, bluntly angled before, more sharply angular behind, with a tolerably well-marked posterior ridge; surface strongly and irregularly concentrically sulcate; beaks small but rather prominent, sculptured with fine, irregular, broken ridges, which are somewhat doubly looped, the front loop being larger and more rounded; epidermis olive to tawny, wrinkled, sometimes having faint rays; pseudocardinals compressed, ragged; hinge plate narrow; laterals short, slightly curved, obliquely striated; muscle sears rather shallow, the posterior round; female shell produced in post-basal region. Animal with small branchie, inner united the whole length to the ab- dominal sac, wider than the outer in front, narrower behind; marsupium occupying the posterior part of the outer gills in from eleven to twenty distinct ovisacs which are rounded and dark below, the whole having a decided, parallel sulcus inside and out near its base; mantle thin, papery, with a wide, thickened, double edge, which is sometimes cre- nate; branchial opening large fringed; anal opening smooth or with only the faintest crenulations.' (Group of Plagiola cyrenoides.) Shell generally more or less covered with radiating grooves which cut up the concentric sculpture into looped wrinkles or nodules, sometimes having the appearance of dried, wrinkled paint, the sculpture extend- ing into the substance of the shell; epidermis usually tawny or yel- lowish, rarely showing any vestiges of rays; female shell greatly pro- duced in the post-basal region. +PLAGIOLA CYRENOIDES Philippi. * Unio cyrenoides PHILIPPI, Zeits. fiir Mal., 1V, 1847, p. 93; *Abbild., III, 1848, p. 49, pl. v, fig. 1.—* Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 248.—* H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 495.—* Kuster. Conch. Cab. Unio., 1862, p. 285, pl. xcvi, fig. 1.—* B. H. Wricut, Check List, 1888.—* Pa&TEL, Conch. Sam., III, 1890, p. 150. * Margaron ( Unio) cyrenoides LEA, Syn., 1852, p. 25; 1870, p. 38. 1In a female P. cyrenoides, which was not gravid, the sulcus near the base of the inside of the marsupium was quite deep, in fact the part above it hung over it in a sort of flap, which would no doubt disappear if it was filled with ova, 3h NC. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. “260% *t Unio newcombianus LEA, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 103; * Obs., VI, 1857, p. 32, pl. Xxx, fig. 27; * JI. Ac. N. Sci. Phila., III, 1858, p. 312, pl. Xxx, fig. 27.—* B. H. Wricut, Check List, 1888. * Margaron (Unio) newcombianus LEA, Syn., 1860, p. 36. * Unio sagrinatus SOWERBY, Conch. Icon., XVI, 1868, pl. Lxvui, fig. 345,1— P#TEL, Conch. Sam., III, 1890, p. 166. Nicaragua; Venezuela? A specimen in the U.S. National Museum from the Morelet collection is marked with the latter locality. t PLAGIOLA ENCARPA Lea. * Unio encarpus LEA. Pr. Ac. N. Sci. Phila., XIT, 1868, p. 95; *J1. Ac. N. Sci. Phila., VI, 1868, p. 294, pl. xu, fig. 105; *Obs., XII, 1869, p. 54, pl. x1iI, fig. 105.—* B. H. Wricut, Check List, 1888. Margaron (Unio) encarpus LEA, Syn., 1870, p. 35. Nicaragua. (Group of Plagiola nicaraquensis.) Shell much like that of cyrenoides, but simply covered with coarse, irregular, concentric ridges, and having no radiating grooves or wrin- kles, faintly rayed in umbonal region. Animal as in Cyrenoides group. t PLAGIOLA NICARAGUENSIS Lea. * Unio nicaraguensis LEA, Pr. Ac. N. Sci. Phila., XII, 1868, p. 95; * JI. Ac. N. Sci. Phila., VI, 1868, p. 296, pl. xxi, fig. 107; *Obs., XII, 1869, p. 56, pl. xLut, fig. 107.—* B. H. Wricut, Check List, 1888. * Margaron ( Unio) nicaraguensis LEA, Syn., 1870, p. 35. * Unio gabbianus Lwa, Pr. Ac., N. Sci. Phila., XII, 1868, p. 95; *J1. Ac., N. Sci. Phila., VI, 1868, p. 295, pl. xu, fig. 106; *Obs., XII, 1869, p. 55, pl. xx111, fig. 106.—* B. H. Wricut, Check List, 1888. * Margaron (Unio) gabbianus LEA, Syn., 1870, p. 35. Nicaragua. The following species are unfigured and indeterminable. * Unio nuculinus PuiLieri, Zeits. fiir Mal., V, 1848, p. 176. Nicaragua. Probably near cyrenoides. * Unio (Plagiola?) imbricatus MOrcH, Mal. Bl., VII, 1861, p. 205. Nicaragua. This may equal encarpus Lea. DIGEN 2. Male shell inflated, truncated posteriorly; female shell compressed, expanded into a broad wing behind the post ridge, the wing being filled with a flap of the mantle. Genus TRITOGONIA Agassiz, 1852. Tritogonia AGassiz, Arch. fiir Nat., 1852, p. 48. Shell solid, elongate rhomboid, having a strong, irregular posterior ridge, obliquely truncated behind in the male, in the female this region is somewhat compressed and rounded; base incurved; whole surface 1 Changed in errata by the author to U. newcombianus, 608 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. except the rounded wing of the females covered with pustules; beaks rather low, incurved and turned forward over the well-developed lunule, which is elongated and filled with epidermal matter; beak sculpture strong, consisting of irregular, subparallel ridges which are curved upward behind, and fine radiating ridges in front of and behind this; epidermis dark olive; hinge plate rather narrow; pseudocardi- nals strong, ragged; laterals long and straight, near to the pseudocar- dinals; adductor scars shallow; cavity of the beaks rather deep and compressed, female shell more compressed than that of the male. Aniwal with the inner gills much larger than the outer, generally free for the most part from the abdominal sac; palpi enormous, elongated, united to each other behind, and to the mantle a part of their length; _ mantle thin, with a thickened, dark, double border, the inner edge often toothed throughout, the base much thickened at the posterior end and folded at the branchial opening; branchial opening large, with numer- ous crowded papillz; anal opening smooth or with only fine denticula- tions; superanal opening long, closed below; in the female there is a thickened flap of the mantle which fills the circular posterior expansion of the shell, and which has a smaller flap inside; foot and abdominal sac large, the latter winged in front.! | TRITOGONIA TUBERCULATA Barnes. * Unio tuberculatus BARNES, Am. J1. Sci., VI, 1823, p. 125, pl. vu, figs. 8a 8b.2—* HIL- DRETH, Am. JI. Sci., XIV, 1828, p. 282.—SHoR?T and HaTon, Transylvania J1., 1831, p. 76.—* REEVE, Conch. Syst., I, 1841, p. 118, pl. Lxxxviul, fig. 5.—* Han- LEY, Test. Moll., 1842, p. 182; “Biv. Shells, 1843, p. 182, pl. xx, fig. 27.—*Pormz and MicuHaup, Gall. Moll., 1844, p. 158, pl. Lx, fig. 1.—*CarLow and REEVE, Conch. Nom., 1845, p. 64.—* REEVE, Elements of Conch., 1860, II, pl. xxx111, fig. 1838.—* CaLkiIns, Pr. Ottawa Acad. Sci., 1874, p. 45.—*B. H. WRIGHT, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 170. * Margarita (Unio) tuberculatus LEA, Syn., 1836, p. 17; 1838, p. 16. * Margaron (Unio) tuberculatus LEA, 1852, p. 23; 1870, p. 34. = * Mya tuberculata EATON, Zool. Text-Book, 1826, p. 217. * Unio pustulata SWAINSON, Treat. on Mal., 1840, p. 271, fig. 54d. * Unio gigas SOwERBY,* Conch. Icon., XVI, 1867, pl. Lv1, fig. 287. 1] have never seen a specimen among the hundreds examined that had young or ova in the gills. But I have seen spermatozoa in specimens with inflated shells and ova in those with the wing. Mr. H. M. Kelly, of Mount Vernon, Iowa, who has made a very careful study of the anatomy of many of our Unionide, assures me that the form with the compressed shell, having the expanded flap behind, is the female. 21t has been claimed that this species was previously described nnder the name of Obliquaria verrucosa by Rafinesque, but I am unable to make anything out of his figure or description; hence I use the name given by Barnes. Barnes’s name was used by Rafinesque for the species which the former called Unio verrucosus, but as Rafinesque placed his species in Obliquaria, and as the generic names of both forms are changed in this work, I do not consider Barnes’s name preoccupied. 3] think that this is a large, rather high male of the species in question. I can not tind any description of Unio gigas by Swainson, to whom Sowerby credits this species, and the Megadomus gigas of Swainson (which, so far as I know, is undescribed) can not be it, as the latter says that his genus, Megadomus, has the lateral teeth imperfect, one or none. Treatise on Mal., p. 266. bhiediestis Sea a ae ee a NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 609 * Unio verrucosus Say, Am. Conch., VI, 1834.—* ConraD, New F. W. Shells, 1834, p. 72.—* FeRussac, Guer. Mag., 1835, p. 27.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 259.—* KustTER, Conch. Cab., 1862, p. 273, pl. xcit, fig. 1.—* Sow- ERBY, Conch. Icon., XVI, 1868, pl. 1, fig. 4. * Tritogonia verrucosa AGAssiz, Arch. fiir. Nat., I, 1852, p. 48. * Tritigonia verrucosa SMiTH, Bull. U. 8. Fish Com., 1899, p. 291, pl. Lxxx1. + TRITOGONIA TUBERCULATA var. OBESA Simpson.! Mississippi drainage generally; streams falling into the Gulf of Mexico from the Alabama system west to central Texas. + TRITOGONIA CONJUGANS B. H. Wright. * Unio conjugans B. H. WRIGHT, Naut., XIII, 1899, p. 89. *Tritogonia conjugaus Simpson, Pr. Ac. N. Sci. Phila., 1900, p. 79, pl. rv, fig. 1. Hiawassee River, Tennessee. A single male shell of this remarkable species, the type, is in the U.S. National Museum collection. I am not positive that it belongs here, though it probably does. MESOGEN 2-. Male and female shells alike, short, solid, inflated; embryos occupying a few distinct ovisacs in the center of the outer gills. Genus CYPROGENIA Agassiz, 1852. (Type, Unio irroratus Lea. ) Cyprogenia AGAssiZ, Arch. fiir Nat., 1852, p. 47. Shell solid, inflated, rounded triangular, sometimes slightly retuse, generally a little biangular behind; posterior ridge unusually well developed, especially in the young shell; umbonal region flattened parallel with the axis of the shell, sometimes compressed; beaks curved inward and forward, their sculpture very faint, consisting of slightly doubly looped ridges; sculpture of the shell nodular, radiately wrinkled, or lachrymose; ligament black and conspicuous; lunule distinct and well developed; epidermis shining, painted with a delicate, dark mot- tling on a light ground; hinge plate wide and flat; pseudocardinals heavy, triangular, blunt and ragged; laterals short, obliquely striated ; cavity of the beaks not deep; adductor scars small, well impressed, those at the posterior round; nacre bright and silvery. Animal with inner gills partly free from the abdominal sac, rounded below; outer gills smaller; marsupium consisting of from seven to twenty-three very long, purple ovisacs pendent from near the central base of the outer gills, and formed into a close coil with the ends turned inwardly; bran- chial opening large with many small papillxe; anal opening smooth. 1A short, inflated, peculiarly formed shell from Big Eddy, Nechez River, Texas, having very few faint tubercles is in the U.S. National Museum collection, and may be a distinct species. It is certainly worthy of the varietal name here applied, Proc. N. M. vol. xxii 39 610 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XX. +CYPROGENIA IRRORATA Lea. * Unio irroratus LEA, Tr. Am. Phil. Soc., IIT, 1830, p. 269, pl. v, fig.5; *Obs., I, 1834, p. 11, pl. v, fig. 5.—Snorr and Earon, Transylvania Journ., 1831, p. 77.— * HANLEY, Test. Moll., 1842, p.181; * Biv. Shells, 1843, p. 181, pl. xx, fig. 25.— *CaTLow and REEVE, Conch. Nom., 1845, p. 60.—* CHENU, II]. Conch., 1858, pl. x, figs. 3, 3a, 3b.—* REEVE, Conch. Icon., XVI, 1864, pl. xu, fig. 44.—* B. H. WriGut, Check List, 1888. * Margarita (Unio) irroratus LEA, Syn., 1836, p. 16; 1838, p. 15. * Margaron (Unio) irroratus LEA, Syn., 1852, p. 22; 1870, p. 34. * Unio irrorata DESHAYES, Encyc. Meth., II, 1830, p.579.—* DESHAYES, An. sans. Vert., 2d ed., VI, 1835, p. 547; 3d ed., IT, 1839, p. 672. * Theliderma trrorata, SWAINSON, Tr. on Mal., 1840, p. 271, fig. 54a. * Unio verrucosus albus HILDRETH, Am. J1. Sci., XIV, 1828, p. 281. * Unio stegarius Say, Am. Conch., VI, 1834.—* ConrAD, New F. W. Shells, 1834, p. 71,—* Frrussac, Guer. Mag., 1835, p. 28.—* ConrAD, Monog., X, 1838, p. 33, pl. xLv1, fig. 1; *Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.—* Runvx, Conch. Icon., XVI, 1864, pl. x1, fig. 45. z * Unio stegarius var. irroratus PH#TEL, Conch. Sam., III, 1890, p. 168. +CYPROGENIA IRRORATA var. PUSILLA Simpson.! Ohio, Cumberland, and Tennessee river systems; St. Francis and Saline rivers, Arkansas? Eastern Iowa? The specimens reported from the western localities may be C. aberti. {CYPROGENIA ABERTI Conrad. * Unio aberti CONRAD, Pr. Ac. N. Sci. Phila., V, 1850, p.10; * VI, 1853, p. 244; Jl. Ac. N. Sei. Phila., 1854, p. 295, pl. xxv1, fig. 1.—* B. H. WricurT, Check List, 1888. * Margaron ( Unio) aberti LEA, Syn. 1870, p. 34. * Unio lamarckianus Lua, Tr. Am. Phil. Sci., X, 1852, p. 266, pl. xv, fig. 20; * Obs., V, 1852, p.22, pl. xvu, fig. 20.—* H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 496.—* SowERBY, Conch. Icon., XVI, 1868, pl. xctt, fig. 498.—* PZTEL, Conch. Sam., IIT, 1890, p. 156. * Margaron (Unio) lamarckianus LEA, Syn., 1852, p. 23. * Unio popenot CALL, Bull. Washb. Coll., I, 1885, p. 49, pl. 1. Kansas; Missouri; Indian Territory; Arkansas. Genus OBLIQUARIA (Rafinesque 1820) Simpson. (Type, Obliquaria refleca Rafinesque. ) Obliquaria RAFINESQUE, Ann. Gen. Sci. Phys. Brux., 1820, p. 301. Shell inflated, solid, oval, ending in a tolerably sharp point behind, having a row of large, compressed, longitudinal knobs running from the beaks to the center of the base, those of one valve alternating in position with the knobs of the other, and a well-developed posterior ridge, the space between the ridge and knobs somewhat excavated; posterior slope and sometimes the entire shell more or less corrugately sculptured; beaks prominent, incurved and pointed slightly forward toward a tolerably well-developed lunule; beak sculpture strong, con- 1A peculiar, dwarfed variety, about one-half the size of the ordinary form and much inflated, from the Green River, Kentucky. 4 ¥ % 3 NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 611 sisting of four or five heavy, parallel ridges, which fall low in front but are curved upward behind; epidermis smooth, generally shining, painted with numerous delicate, wavy, darker, broken rays; pseudo- cardinals strong, direct, and ragged; laterals short, nearly straight; anterior muscle scars small, the sides of the pit smooth, the bottom ragged; front part of the shell very solid, suddenly becoming rather thin just behind the knobs; male and female shells essentially alike. Animal with small branchiz, rounded below, inner the larger, free from the abdominal sac in part; marsupium consisting of a few distinctly marked ovisacs (£ to 7), occupying a position just behind the center of the outer gills, projecting far below the rest of the branchiz, their bases rounded; mantle cut away at the thinner portion of the sheli; anal opening smooth or having only minute crenulations. + OBLIQUARIA REFLEXA Rafinesque. * Obliquaria (Quadrula) refleca RAFINESQUE, Ann. Gen. Sci. Phys., SE) p. 306.— * CHENU, Bib. Conch., Ist Ser., III, 1845, p. 19. * Obliquaria reflexa BAKUR, Moll. Giiceeo, Pt. 1, 1898, p. 89, pl. xiv, fg 8: XX, fig. 2. * Unio reflecus Say, Am. Gonene No. VI, 1834.—* ConraD, New F. W. Shells, 1834, p. 71; *Monog., I, 1835, p.7, pl. Iv, fig. 1.—* FERussac, Guer. Mag., 1835, p 28.—* KUSTER, Conch. Cab. Unio, 1852, p. 52, pl. x1, fig. 2.—* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 256.—* REEVE, Conch. Icon., X VI, 1864, pl. V1, fig. 23. *Unio cornutus BARNES,' Am. Jl. Sci., VI, 1823, p. 12% Baa IV, figs. 5, 5a, 5b, 5¢e.— * 2? ANTON, Verz. der Conch., 1839, p. 14.—* HANLEY, Test. Moll., 1842, p. 179; Biv. Shells, 1843, p.179, pl. xx, fig.380.—* CaTLOW and REEVE, Conch. Nore 1845, p.57.—* H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 497.—* CaLkIns, Pr Ottawa Ac. N.Sci., 1874, p. 41.—* B. H. Wriaut, Check List, 1888. * Margarita ( Unio) cornutus LEA, Syn., 1836, p.15; 1838, p. 15. *Margaron (Unio) cornutus LEA, Syn., 1852, p. 22; 1870, p. 33. *Mya cornuta EATON, Zool. Text-book, 1826, p. 216. *Theliderma cornuta SWAINSON, Treat. on Mal., 1840, p. 269. Unio torulosus SHORT and EaTon, Transylvania J1., 1831, p. 75. “t? Unio philippsi CONRAD,? Monog., I, 1835, p. 9, pl. v, fig. 1; *Pr. Ac. N. Sci. Phila., VI, 1853, p. 255.—* PTE, Conch. Sam., III, 1890, p. 163. *Unio phillipstti CaTLOW and REEVE, Conch. Nom., 1845, p. 62.—* KusTER, Conch. Cab. Unio, 1852, p. 50, pl. x, fig.3.—* H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 497.—* B. H. Wriaut, Check List, 1888. * Margarita ( Unio) phillipsii Lea, Syn., 1836, p. 15; 1838, p. 15. *Margaron ( Unio) phillipsti LEA, Syn., 1852, p. 22; 1870, p. 33. *Unio philipsii HANLEY, Test. Moll., 1842, p.178; Biv. Shells, 1843, p. 178. Mississippi drainage; Michigan; Alabama River; southwestwardly to central Texas. 1T am sorry to have to place the very appropriate and well-known name of Barnes in the synonymy, but Ii believe that the description of Rafinesque for his Obliquaria refleca defines this species and nothing else, and although it is not figured, I feel jus- tified in using it. 2 A singular shell having the general form of reflexa, but the knobs are much broken up. Ihave seen specimens which agree quite well with Conrad’s fine figure, which I have no doubt represents an unusual form of Rafinesque’s species, and they hardly seem to me to be a varity. I do not think the so-called type in the Phila- delphia Academy of Natural Sciences is valid. 612 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XI. PYYCHOGE NA: Male and female shells essentially alike, embryos contained in dis- tinct ovisacs with rounded bases, occupying the entire outer gills, ‘which, when gravid, consist of a series of folds. Genus PTYCHOBRANCHUS Simpson, 1900. (Type, Unio phaseolus Hildreth. ) Ptychobranchus Simpson, Pr. Ac. N. Sci. Phila., 1900, p. 79. Shell triangular, solid, sometimes becoming arcuate in old specimens, umbonal region rather elevated; beak sculpture consisting of faint, somewhat broken ridges which have a tendency to be doubly looped; posterior ridge rounded but well developed; epidermis usually painted with wavy hair line rays or broken, radiating bars, which show a tend- ency to form square spots; hinge plate rather wide and flat; pseudo- cardinals small, low, triangular and roughened; laterals club-shaped, remote; cavity of the beaks shallow; muscle scarsratherdeep. Animal with inner gills free all or part of their length from the abdominal sac; marsupium occupying the basal half of the whole length of the outer gills and hanging in from six to twenty beautiful folds; ovisacs dis- tinct, each ending below in an enlarged, rounded bulb which has a colored spot in its center; mantle thin, with a dark, thickened border; branchial opening large, with very minute papille or crenulations, some- times smooth; anal opening crenulate or smooth. +PTYCHOBRANCHUS PHASEOLUS Hildreth. * Unio phaseolus HILDRETH, Am. Jl. Sci., XIV. 1828, p. 283.!—Say, Am. Conch., No. III, 1830, pl. xxu1.—Suort and Eaton, Transylvania J1., 1831, p. 77.—* Han- LEY, Test. Moll., 1842, p.207; Biv. Shells, 1843, p. 207, pl. xx, fig. 50.—* CHENU, Bib. Conch., 1st ser., III, 1845, p. 31, pl. 1x, figs. 1-6.—* CaTLow and REEVE, Conch. Nom., 1845, p.62.—*H.and A. Apams, Gen. Rec. Moll., IT, 1857, p. 491.— * SowWERBY, Conch. Icon., XVI, 1868, pl. LX x11, fig. 378.—* B. H. WRIGHT, Check List, 1888.—* Pa:TEL, Conch. Sam., III, 1890, p. 163. * Margarita (Unio) phaseolus LEA, Syn.,1836, p. 38; 1838, p. 25. * Margaron ( Unio) phaseolus LEA, Syn., 1852, p.38; 1870, p. 61. t * Unio planulatus Lea, Tr. Am. Phil. Soc., III, 1830, p. 431, pl. rx, fig. 138; * Obs., I, 1834, p. 45, pl. rx, fig. 13.—* DesHayes, An. sans Vert., 2d ed., VI, 1835, p. 549.—* CHENU, II]. Conch., 1858, pl. x11, figs. 1, la, 1b; *Manual, 1859, II, p. 137, fig. 659. * Unio planulata DESHAYES, An. sans Vert., 3d ed., II, 1839, p. 672. * Unio fasciolaris CONRAD, New F. W. Shells, 1834, p. 69.—* FERUSSAC, Guer. Mag., 1835, p. 27.—* AGassiz, Arch. fiir Naturg., I, 1852, p. 50.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 249.—* Kuster, Conch. Cab., 1861, p. 172, pl. Liv, figs. 1-4. * Unio camelus Lea,” Tr. Am. Phil. Soc., V, 1834, p. 102, pl. xv, fig. 45; *Obs., I, 1 Figure left out by the editor. 2Typically this form is quite distinct from the ordinary manifestation of the spe- cies, being very solid and much humped, but there seems to be every possible varia- tion to the lighter, more compressed forms, and I do not think it is worthy of a varietal name. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 613 1834, p. 214, pl. xv, fig. 45.—* FERussACc, Guer. Mag., 1835, p. 29.—* HANLEy, Test. Moll., 1842, p. 184; * Biv. Shells, 1843, p. 184, pl. xx1, fig. 54.—* Cartow and REEVE, Conch. Nom., 1845, p. 56.—* H. and A. ADAMs, Gen. Ree. Moll., I, 1857, p. 495.—* SOWERBY, Conch. Icon., XVI, 1867, pl. LV, fig. 283.—* B. H. WriGuHrT, Check List, 1888.—P aTEL, Conch. Sam., III, 1890, p. 147. * Margarita ( Unio) camelus LEA, Syn., 1836, p. 19; 1838, p. 17. * Margaron (Unio) camelus LEA, Syn., 1852, p. 24; 1870, p. 37. * Unio compressissimus LEA,! Pr. Am. Phil. Soc., IV, 1845, p. 163; * Tr. Am. Phil. Soc., X, 1848, p. 81, pl. vin, fig. 23; * Obs., 1V,1848, p. 55, pl. vim, fig. 23.—* Conran, Pr. Ac. N. Sci. Phila., VI, 1853, p. 247.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 495.—* B. H. Wricut, Check List, 1888.—* PaTEL, Conch Sam., III, 1890, p. 148. * Margaron (Unio) compressissimus LEA, Syn., 1852, p. 24; 1870, p. 37. Ohio, Tennessee, and Cumberland river systems; peninsula of Michi- gan; Kansas; Arkansas; Indian Territory; Louisiana. It is quite probable that some of the specimens reported from the southwestern part of the range belong to the next species. + PTYCHOBRANCHUS CLINTONENSIS Simpson. * Ptychobranchus clintonensis SIMPSON, Pr. Ac. N. Sci. Phila., 1900, p. 79, pl. v, fig. 3. Little Red River, Arkansas; Indian Territory(?); southwest Ten- nessee( ?) +PTYCHOBRANCHUS FOREMANIANUS Lea. *~Unio foremanianus LEA, Pr. Am. Phil. Soc., II, 1842, p. 224; *Tr. Am. Phil. Soc., VIII, 1842, p. 247, pl. xxvu, fig. 64; *Obs., III, 1842, p. 85, pl. xxvul, fig. 64.— * CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p.249.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 495.—* CHENU, Il]. Conch., 1858, pl. xxv1, figs. 1, la, 1b.— * SOWERBY, Conch. Icon., XVI, 1866, pl. xxxvul, fig. 202.—* B. H. Wrigut, Check List, 1888.—* P@TeL, Conch. Sam., III, 1890, p. 153. * Margaron (Unio) foremanianus LEA, Syn., 1852, p. 23; 1870, p. 36. * Unio woodwardius Lea,? Pr. Ac. N. Sci. Phila., IX, 1857, p. 170. * Unio woodwardianus Lea, Jl. Ac. N. Sci. Phila., IV, 1859, p. 199, pl. xxi, fig. 82; “Obs., 1859, p. 17, pl. xxi, fig. 82.—* ? REEVE, Conch. Icon., XVI, 1864, pl. XVI, fig. 73.—* B. H. Wrieut, Check List, 1888.—* PasTEL, Conch. Sam., ITI, 1890, p. 172. Margaron ( Unio) woodwardianus Lr, Syn., 1870, p. 36.° *Unio velatus CONRAD, Jl. Ac. N. Sci. Phila., 1853, p. 298, pl. xxvil, fig. 6; *Pr. Ac. N. Sci. Phila., VI, 1853 p. 259. Alabama River drainage. 1 The type is simply an old, stunted phaseolus, with nearly every vestige of epider- mis eroded away. 2This is the name originally given by Dr. Lea. He afterward changed it to woodwardianus. 3T formerly thought foremanianus and woodwardianus distinct, but alarge amount of material received from Mr. R. E. Call, from the Cahawba River, Alabama, shows that the two absolutely blend together, there being a great diversity of form, and some specimens show the capillary rays of foremanianus and the square spots of woodwardianus, while others are of a uniform tawny color. 614 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII |}PTYCHOBRANCHUS TRINACRUS Lea. *Unio trinacrus LEA, Pr. Ac. N. Sci., Phila., V, 1861, p.59; *Jl. Ac. N. Sci., Phila., V, 1862, p. 86, pl. xu, fig. 235; *Obs., VIII, 1862, p. 90, pl. x11, fig. 235.— * SOWERBY, Conch. Icon., XVI, pl. LXxx1, fig. 428.—* B. H. Wrra@ut, Check List, 1888. * Margaron (Unio) trinacrus Lea, Syn., 1870, p. 36. Coosa River, Alabama. +tPTYCHOBRANCHUS GREENI Conrad. * Unio greeni CONRAD, New F. W. Shells, 1834, p. 32, pl. 1v, fig. 1, p. 69.—*FERUSSAC, Guer. Mag., 1835, p. 29.—* MOLLER, Syn. Nov. Gen., 1836, p. 203.—* CONRAD, Monog., VIII, 1837, p. 69, pl. xxxvul, fig. 2.—*HANLEY, Test. Moll., 1842, p. 191; * Biv. Shells, 1843, p. 191, pl. xxrv, fig. 6. —* CHENU, Bib. Conch., Istser., 1845, p. 17, pl. 111, fig. 5.—*CaTLow and REEVE,Conch. Nom., 1845, p.59.—*CONRAD, Pr. Ac. N. Sei. Phila., VI, 1853, p. 250.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 494.—* SowERBY, Conch. Icon., X VI, 1866, pl. xLVU, fig. 253.—* B. H. WriGHT, Check List, 1888.—* P&TEL, Conch. Sam., ITI, 1890, p. 154. * Margarita (Unio) greeni LEA, Syn., 1836, p. 24; 1838, p. 19. * Margaron (Unio) greeni LEA, Syn., 1852, p. 27; 1870, p. 42. t* Unio simplex Lua, Pr. Am. Phil. Soc., IV, 1845, p.163; *Tr. Am. Phil. Soc., X, 1848, p. 76, pl. v, fig. 15; *Obs., IV, 1848, p. 50, pl.v, fig. 15.—* H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p.494.—* B. H. Wrieut, Check List, 1888.—* PaTEL Conch. Sam., III, 1890, p. 167. * Margaron (Unio) simplex LEA, Syn., 1852, p. 27; 1870, p. 42. Black Warrior River, Alabama. +tPTYCHOBRANCHUS FLAVESCENS Lea. * Unio flavescens LA, ! Pr. Am. Phil. Soc., IV, 1845, p. 163; Tr. Am. Phil. Soc., X, 1848, p. 72, pl. 11, fig.9; *Obs., IV, 1848, p. 46, pl. m1, fig. 9.—* CONRAD, Pr. Ac. N.Sci. Phila., VI, 1853, p.249.—* H.and A. Apams, Gen. Rec. Moll., II, 1857, p. 494.—* B. H. Wricut, Check List, 1888. * Margaron (Unio) flavescens LEA, Syn., 1852, p. 27; 1870, p. 43. * Unio flavescens PATEL, Conch. Sam., III. Black Warrior River, Alabama. ESCHATIGEN &. Male and female shells alike; embryos in distinct, short ovisacs, forming a border to the entire outer gills. Genus DROMUS Simpson, 1900. (Type, Unio dromus Lea.) Shell solid, rounded-triangular; beaks well forward, rather high; beak sculpture consisting of fine ridges running parallel with the growth lines, the furrows between the ridges interrupted at the posterior ridge; posterior ridge distinct; a series of humps runs from the beaks down to the central part of the base of the sheli, which is otherwise sculptured by 1 [ have only seen a single shell of this, and it is not in the best condition. It may be only a form of greeni, but it is not so inflated or solid, and it has no rays. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 615 irregular concentric ridges; epidermis beautifully painted by undulated, radiating, broken hair lines or fine maculations; hinge plate wide and flat; pseudocardinals triangular, small and low, ragged; laterals low, short, club-shaped; cavity of the beaks deep and compressed, dorsal muscle scars on the under side of the hinge shelf; adductor scars small; front part of the shell very thick, suddenly becoming thinner at the row of humps; male and female shells much alike. Animal with the inner branchie much the larger, curved below, free from the abdominal sac; marsupium occupying the base of nearly the whole outer branchiz in numerous rather indistinctly marked ovisacs, bases of the ovisacs slightly rounded; ova very minute; palpi small, curved; branchial opening very large, extending one-third of the way along the base, fringed with many brown papille; anal opening very large, finely crenulated. : +DROMUS DROMUS Lea. * Unio dromus LEA, Tr. Am. Phil. Soc., V, 1834, p. 70, pl. x, fig. 29; * Obs., I, 1834, p. 182, pl. x, fig. 29.—* FERusSAC, Guer. Mag., 1835, p. 29.—* ConrAD, Monog., X, 1838, p. 84, pl. xLvi, fig. 2.—* Hantery, Test. Moll., 1842, p. 181; * Biy. Shells, 1843, p. 181, pl. xxi, fig. 25.—* CaTLow and REEVE, Conch. Nom., 1845, p. 58.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 248.—* H. and A. ApDAMS, Gen. Rec. Moll., II, 1857, p. 496.—*KusteEr, Conch. Cab. Unio, 1861, p. 172, pl. xin, figs. 3, 4. —* REEVE, Conch. Icon., XVI, 1864, pl. vil, fig. 29.— *B. H. WriGut, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 151. “Margarita (Unio) dromus LEA, Syn., 1836, p. 16; 1838, p. 16. *Cyprogenia dromus AGassiZ, Arch. fiir Naturg., I, 1850, p. 48. *Margaron (Unio) dromus LEA, Syn., 1852, p. 23; 1870, p. 34. Tennessee and Cumberland River systems. +t DROMUS CAPERATUS. Lea.! *Unio caperatus LEA, Pr. Am. Phil. Soc., IV, 1845, p. 164; *~Tr. Am. Phil. Soc., X, 1848, p. 75, pl. v, fig. 14; * Obs., IV, 1848, p. 75, pl. v, fig. 14.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 496.—* REEVE, Conch. Icon., XVI, 1864, pl. v, fig. 19.—* B. H. Wricut, Check List, 1888.—* Pa&TEL, Conch. Sam., ITI, 1890, p. 147. ‘ *Margaron ( Unio) caperatus LEA, Syn., 1852, p. 22; 1870, p. 34. *Unio abacoides HALDEMAN,’ Pr. Ac. N. Sci. Phila., III, 1846, p. 75; * Am. JI. of Sei., II, 1846 (September), p. 274. Tennessee River system. DIAGEN 2. Male and female shells alike; embryos contained in the outer gills in short ovisacs which run crosswise of the branchi, and are discharved entire into the water. 1 Generally this form is more compressed and less humped than D. dromus, but I think it is probably only a variety of the latter. 2? Haldeman only gave a brief description of his species, and it has never been figured. According to Lea it equals his U. caperatus, and I believe he is correct. 616 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Genus ST ROPE Ws Rahinieseue iSO: (Type, Anodonta undulata Say.) Strophitus RAFINESQUE, Ann. Gen. Sci. Phys. Brux., 1820, p. 316. Uniopsis AGASSIZ, Arch. fiir Naturg., 1852, p. 49. Shell elliptical to rhomboid, inflated, subsolid, pointed or biangu- late behind, with a low posterior ridge, which is sometimes double; beaks full, sculpture consisting of a few strong, concentric ridges, which curve sharply upward behind; epidermis rayed or rayless, shin- ing; hinge line incurved in front of the beaks; teeth rudimentary, a vestigeal, compressed tooth in each valve, and sometimes a secondary tooth; laterals rarely present; muscle sears shallow. Animal with the marsupium occupying the whole of the outer gills, consisting of short, horizontal ovisacs which run directly across the gills, and are discharged through the outer wall with the ovules in them; ovules ten to twenty-five in each ovisac, in one or two rows; inner gills the larger, free in part from the abdominal sac, or wholly united; mantle generally bordered behind with square, black spots; branchial opening with numerous papille; anal opening papillose or crenulate.! tSTROPHITUS EDENTULUS Say. Alasmodonta edentula Say, N. Harm. Diss., II, No. 22, 1829, p. 340.—* Conrap, New F. W. Shells, 1834, p. 72.—*L. W. Say, Terr. and Fluv. Shells, 1840, p. 10. * Anodonta edentula FERUSSAC, Guer. Mag., 1835, p. 25.—* Haney, Test. Moll., 1842, p. 218.—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 502.—* CaLK- INS, Pr. Ottawa Ac., 1874, p. 50.—* CLESSIN, Conch. Cab. Ano., 1873, p. 107, pl. xxx, figs. 5,6.—* LATCHFORD, Tr. Ottawa F. N. Club, 1882, p. 55.—* B. H. Wriaut, Check List, 1888.—* Pa#TEL, Conch. Sam., II, 1890, p. 179. * Margarita (Anodonta) edentula LEA, Syn., 1836, p. 450; 1838, p. 30. * Anodon edentula CATLOW and REEVE, Conch. Nom., 1845, p.66.—* DE Kay, Zool. N. Y., Pt. 5, 1848, p. 201, pl. xvi, fig. 251.—* HARTMAN and MICHENER, Conch. Cest., 1874, p. 95, fig. 174. *Uniopsis edentula AGAssiz, Arch. fiir Naturg., I, 1852, p. 49. *Margaron (Anodonta) edentula Lia, Syn., 1852, p.49; 1870, p. 79. *Strophitus edentulus CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 263.--* BAKER, Moll. Chicago, Pt. 1, 1898, p. 67, pl. x1, figs. 5,6; Xvut, fig. 3. * Anodon rugosus SWAINSON, Zool. [ll., 1st ser., II, pl. xov, 1822. * Anodonta rugosus HANLEY, Biv. Shells, 1848, p. 217. * Anodonta undulata HILDRETH, Am. JI. Sci., XIV, 1828, p. 290.—* CLEsSSIN, Conch. Cab. Ano., 1873, p. 79, pl. Xx vil, figs. 3, 5. *Anodon undulata GOULD, Inv. of Mass., 1841, p. 120, fig. 79; 1870, p. 182, fig. 482. *Unio undulata DESHAYES, Tr. Elem., II, 1853, p. 217, pl. xxx, figs. 8, 9. * Anodon undulatus SOWERBY, Rich. Faun. Bor. Am., III, 1836, p.316.—* SOWERBY, Conch. Icon., XVII, 1867, pl. x1, fig. 30. * Anodon areolatus SWAINSON, Zool. I]l., 2d ser., I, 1829, pl. xv1i1. * Anodonta areolatus FERUSSAC, Guer. Mag., 1835, p. 25. 1TIn this remarkable group of mollusks the changes that take place in the gills when they are used as a marsupium only last as long as they are gravid. When the short ovisacs are discharged the gill becomes an ordinary gill again. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 617 * Anodon marginata FERUSSAC, Guer. Mag., 1835, p. 25. * Anodonta ferussaciana FERUSSAC, Guer. Mag., 1835, p. 25. *+ Margarita (Anodonta) wardiana LEA, Syn., 1836, p. 50; 1838, p. 30. * Anodonta wardiana LEA, Tr. Am. Phil. Soc., VI, 1838, p. 46, pl. xiv, fig. 42; *Obs., II, 1838, p. 46, pl. xrv, fig. 42.—* TROSCHEL, Arch. fiir Nat., V, 1839, Pt. 2, p. 238.—* HANLEY, Test. Moll., 1842, p. 220; * Biv. Shells, 1843, p. 220.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p.503.—* PaTeEt, Conch. Sam., IIT, 1890, p. 186.—*CatTLow and REEVE, Conch. Nom., 1845, p. 68.—* B. H. Wriaut, Check List, 1888. *Anodon wardiana SOWERBY, Conch. Icon., XVII, 1867, pl. xx vil, fig. 114. *Margaron (Anodonta) wardiana LEA, Syn., 1852, p.49; 1870, p. 79. * Anodonta virgata CONRAD, Cover of Mon. No.5, 1836. *Strophitus virgatus CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 263. *Anodon unadilla DE Kay, Zool. of N. Y., Pt. 5, 18438, p. 199, pl. xv, fig. 228. *Strophitus unadilla CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 263. *Anodon undulata GOULD, Inv. Mass., 1841, p. 120, fig. 79; * 1870, p. 182, fig. 79. * t Anodonta tetragona LEA, Pr. Am. Phil. Soc., IV, 1845, p. 165; * Tr. Am. Phil. Soc., X, 1848, p. 82, pl. vii, fig.25; *Obs., IV, 1848, p. 56, pl. vil, fig. 25.—* H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 503.—* B. H. Wriaut, Check List, 1888. — *Margaron (Anodonta) tetragona LEA, Syn., 1852, p.51; 1870, p. 81. *Strophitus tetragona CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 263. * + Anodonta arkansasensis LEA, Tr. Am. Phil. Soc., XI, 1852, p. 293, pl. Xxx, fig. 56; *Obs., V, 1852, p.49, pl. xxx, fig. 56.—* H. and A. ADAMS, Gen. Rec. Moll., IT, 1857, p. 502.—* B. H. Wricut, Check List, 1888.—* PaTeEL, Conch. Sam., ITI, 1890, p. 176. *Margaron (Anodonta) arkansasensis LEA, Syn., 1852, p.50; 1870, p. 80. *Strophitus arkansasensis CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 262. * tAnodonta shefferiana LEA, Tr. Am. Phil. Soc., X, 1852, p. 288, pl. xxv1, fig. 50; *Obs., V, 1852, p. 44, pl. xxv, fig. 50.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p.503.—* PmreL, Conch. Sam., III, 1890, p. 184. *Margaron (Anodonta) shefferiana LEA, Syn., 1852, p.51; 1870, p. 81. *Strophitus schefferiana CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 263. * Anodonta shefferiana CLESSIN, Conch. Cab. Ano., 1853, p. 243, pl. XVII, figs. 5-7. *Anodon shefferianus SOWERBY, Conch. Icon., XVII, 1870, pl. Xxxv, fig. 143. * Anodonta shafferiana B. H. WRIGHT, Check List, 1838. *t Anodonta showalterit La, Pr. Ac. N. Sci. Phila., IV, 1860, p. 307;* Jl. Ac. N. Sci. Phila., 1862, p. 215, pl. xxx1ul, fig. 284; *Obs., IX, 1863, p. 37, pl. xxx1II, fig. 284.—* CLESSIN, Conch. Cab. Ano., 1874, p. 156, pl. LI, figs. 5, 6.—*B. H. Wriacut, Check List, 1888.—* PTE, Conch. Sam., ITI, 1890, p. 184. * Anodon showalteriti SOWERBY, Conch. Icon., XVII, 1870, pl. xxvil, fig. 104. *Margaron (Anodonta) showalterti LEA, Syn., 1870, p. 79. * Alasmodon rhombica ANTHONY, Am. Jl. Conch., I, 1865, p. 158, pl. x11, fig. 5. * Margaritana rhombica PZTEL, Conch. Sam., III, 1890, p. 173. * Anodonta salmonea CLESSIN, Conch. Cab. Ano., 1873, p. 91, pl. xx1v, figs. 1, 2. +STROPHITUS EDENTULUS var. PAVONIUS Lea. *Anodonta pavonia LEA, Tr. Am. Phil. Soc., VI, 1836, p. 78, pl. xx1, fig. 65; ~Obs., II, 1838, p. 78, pl. xx1, fig. 65.—* TrRoscHEL, Arch. fiir Nat.,V, 1839, Pt. 2, p. 239.—* HANLEY, Test. Moll., 1842, p. 218.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 264.—*H.and A. Apams, Gen. Rec. Moll., II, 1857, p. 503.—* Mus- GROVE, Phot. Conch., 1863, pl. 1, fig. 9.—* CLEss1n, Conch. Cab. Ano., 1873, p. 156, pl. Xxx, figs. 3, 4.—* B. H. Wrieut, Check List, 1888.—*Pa&TEL, Conch. Sam., III, 1890, p. 183. “Margarita (Anodonta) pavonia LEA, Syn., 1888, p. 30. *Anodon pavonia DE Kay, Zool. of N. Y., Pt. 5, 1843, p. 203, pl. xu, fig. 358.— 618 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL. *CaTLOW and REEVE, Conch. Nom., 1845, p. 67.—* SowERBY, Conch. Icon., XVII, 1870, pl. xx x11, fig. 128. * Margaron (Anodonta) pavonia Ln, Syn., 1852, p. 50; 1870, p. 79. * Strophitus pavenius BAKER, Moll. Chicago, Pt. 1, 1898, p. 68, pl. m1, fig.5; Vv, fig. 3. * Anodon annulatus SowERBY, Conch. Icon., XVII, 1867, pl. xvi, fig. 67. Entire Mississippi drainage; St. Lawrence system and south in streams draining into the Atlantic to North Carolina; north in the British possessions to Lake Winnipeg; southwest to central Texas; Tyner, Alabama. +STROPHITUS UNDULATUS Say.! Anodonta undulata Say, Nich. Enc., II, 1816, pl. 111, fig. 5.—SHort and Eaton, Transylvania Jl., 1831, p. 81.—* FERussac, Guer. Mag., 1835, p. 25.—*C. B. ApaMs, F. W. and L. 8. of Vt., 1842, p. 15.—* Han ey, Test. Moll., 1842, p. 217; Biv. Shells, 1843, p. 217.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 503.—* LaTCHFORD, Tr. Ot. I*. N. Cl., 1882, p.55.—*B. H. WrigHT, Check List, 1888.—* H. CARPENTER, Naut., 1V., 1890, p. 57.—* P&TEL, Conch. Sam., III, 1890, p. 186. * Margarita (Anodonta) undulata LEA, Syn., 1836, p. 50; 1838, p. 30. * Anodon undulata CATLOW and REEVE, Conch. Nom., 1845, p. 68. * Alasmodonta undulata C. B. ADAMS, Thompson’s Hist. Vt., 1842, p. 165. *Margaron (Anodonta) undulata Lea, Syn., 1852, p.49; 1870, p. 79. *Strophitus undulatus STIMPSON, Shells of N. Eng., 1851, p. 15.—* Conrab, Pr. Ac. N. Sci. Phila., VI, 1853, p. 263. * Anodonta pennsylvanica LAMARCK, An. sans Vert., VI, 1819, p. 86.—* Srark, Elem. Nat. Hist., II, 1828, p. 89.—* DEsHayEs, An. sans Vert., 2d ed., VI, 1835, p. 567; 3d ed., II, 1839, p. 678.—* DELESSERT, Rec. Coq. Lam., 1841, pl. x1, figs. 4a, 4b.—* CHENU, Il. Conch., 1858, pl. 111, figs. 5, 5a.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 503. * Anodon papyraceus ANTHONY, Am. Jl. Conch., I, 1865, p. 161, pl. xv, fig. 2.—* Sow- ERBY, Conch. Icon., XVII, 1867, pl. x1v, fig. 46. * Anodonta papyracea B. H. WRIGHT, Check List, 1888.—* Pa&TEL, Conch. Sam., III, 1890, p. 183. *Margaron (Anodonta) papyracea LEA, Syn., 1870, p. 81. 5 *Anodon quadriplicatus SOwERBY, Conch. Icon., X VII, 1867, pl. xxvii, fig. 110. Northern New England to Virginia, in streams draining into the Atlantic. This species is reported from Manitoba, but it is probable that the specimens from that region are S. edentulus. +STROPHITUS CONNASAUGAENSIS Lea. *Margaritana connasaugaensis LA, Pr. Ac. N. Sci. Phila., II, 1857, p.185; *Jl. Ac. N. Sci. Phila., IV, 1859, p. 229, pl. xxxu, fig. 113; *Obs., VII, 1859, p. 47, pl. XXxU, fig. 113.—* B. H. Wricut, Check List, 1888.—* PaTEL, Conch. Sam., ITI, 1890, p. 172. *Margaron (Margaritana) connasaugaensis LEA, Syn., 1870, p. 69. *Unio connasaughensis SOWERBY, Conch. Icon., XVI, 1868, pl. LXxxvul, fig. 474. *Margaritana connesaugensis CLESSIN, Conch. Cab. Ano., 1875, p. 269, pl. LXxxXI, figs. 7, 8. 1Much confusion exists concerning this and the preceding species. The edentulus is much the larger and solider shell; the undulatus being a small, thin form (Say’s figure is only about half an inch long, from a young or very dwarf specimen), usually quite distinctly biangulate behind. The latter is confined tothe Atlantic drainage, while the former is found in this area and in the Mississippi Valley. : Pr NO. 1205. SYNOPSIS OF THE NAITADES—SIMPSON. 619 *tMargaritana alabamensis Lea, Pr. Ac. N. Sci. Phila., V, 1861, p.41; *Jl. Ac. N. Sci. Phila., V, 1862, p. 104, pl. x v1, fig. 249; *Obs., VIII, 1862, p. 108, pl. xv1, fig. 249.—* CLESSIN, Conch. Cab. Ano., 1876, p. 264, pl. LXxx, fig. 5.—* B. H. WriGuHt, Check List, 1888.—* P&TxEL, Conch. Sam., III, 1890, p. 172. *Unio alabamensis SOWERBY, Conch. Icon., XVI, 1868, pl. LXxx0, fig. 433, *Margaron (Margaritana) alabamensis LEA, Syn., 1870, p. 68. Alabama River system. +STROPHITUS SPILLMANII Lea. *Margaritana spillmanii LEA, Pr. Ac. N. Sci. Phila., Il, 1858, p. 188; *Jl. Ac. N. Sci. Phila., V, 1862, p. 105, pl. xvuy, fig. 252; *Obs., VIII, 1862, p. 109, pl. XVI, fig. 252.—* CLESSIN, Conch. Cab. Ano., 1876, p. 264, pl. Lxxxm1, figs. 5, 6.—* B. H. Wricur, Check List, 1888.—*PaTEL, Conch. Sam., IIT, 1890, p. 174. *Unio spillmantti SOwERBY, Conch. Icon.,-X VI, 1868, pl. LXxxi1, fig. 435. Tombigbee River, Mississippi. +STROPHITUS TOMBIGBEENSIS Lea. *Margaritana tombigbeensis Lea, Pr. Ac. N. Sci. Phila., II, 1858, p. 1388; *J1. Ac. N. Sci. Phila., V. 1862, p. 107, pl. xvi, fig. 255; *Obs., VIII, 1862, p. 111, pl. XVI, fig. 255.—* B. H. WricuT, Check List, 1888.—* PaTEL, Conch. Sam., ITI, 1890, p. 174. *Margaron (Margaritana) tombigbeensis LEA, Syn., 1870, p. 68. *Margaritana (Alasmodonta) tombigbeensis CLESSIN, Conch. Cab. Ano., 1876, p. 268, pl. LXxXI, figs. 3, 4. Tombigbee River, Mississippi. +STROPHITUS GESNERII Lea. *Margaritana gesneriti Lra, Pr. Ac. N. Sci. Phila., II, 1858, p. 138; *J1. Ac. N. Sci. Phila., V, 1862, p. 211, pl. xxxu1, fig. 280; *Obs., IX, 1863, p. 33, pl. xxx, fig. 280.—* B. H. Wricut, Check List, 1888.—* SowERBy, Conch. Icon., XVI, 1868, pl. LXXxXIVv, fig. 446. *Margaron (Margaritana) gesnerti LEA, Syn., 1870, p. 67. *Margaritana gessneri PATEL, Conch. Sam., III, 1890, p. 173. Uphaupee and Swamp creeks, Alabama. +STROPHITUS ELLIOTTII Lea. *Margaritana elliottiit Lea, Pr. Ac. N. Sci. Phila., II, 1858, p.138; *J1. Ac. N. Sci. Phila., IV, 1859, p. 226, pl. xxxI, fig. 108; *Obs., VII, 1859, p. 44, pl. xxx1, fig. 108.—* B. H. Wricut, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 173. *Margaron (Margaritana) elliottii LEA, Syn., 1870, p. 68. *Margaritana (Alasmodonta) elliottii CLESSIN, Conch. Cab. Ano., 1876, p. 267, pl. LxxXxII, figs. 3,4. — *tMargaritana elliptica LEA, Pr. Ac. N. Sci. Phila., ITI, 1859, p. 113; *J1. Ac. N. Sci. Phila., V, 1862, p. 106, pl. xvii, fig. 254; *Obs., VIII, 1862, p. 110, pl. xv1u1, fig. 254.—B. H. WricuHt, Check List, 1888.—PTEL, Conch. Sam., III, 1890, p. 173. *Margaron (Margaritana) elliptica LEA, Syn., 1870, p. 68. *Margaritana (Alasmodonta) elliptica CLESSIN, Conch. Cab. Ano., 1876, p. 270, pl. Lxxx1, figs. 5, 6. Columbus, Georgia; Columbus, Mississippi. 620 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. ?STROPHITUS RADIATUS Conrad. *Alasmodonta radiata CONRAD, Am. Jl. Sci., XXV, 1834, p. 341, pl. 1, fig. 10.1 Small streams of southern Alabama. HOMOGEN 2&. Male and female shells alike, oval to elongate; beak sculpture coarse; embryos filling the entire outer gills in the form of thick, smooth pads; the ovisacs not separated by sulci. Genus ANODONTA (Bruguiere em.) Lamarck, 1799. (Type, Mytilus cygneus Linnieus. ) Mya LInNZUS, part, Syst. Nat., 1758, p. 1158. Limnea Pout, ‘vest. Utriusque Sic., I, 1791, p. 31; II, 1795, p. 253. Anodontites BRUGUIERE, JI. Hist. Nat., I, 1792, p. 181. Anodonia LAMARCK, Prodrome Class. Coq., 1799, p. 87. Anodon OKEN, Lehrb. Nat. Zool., I, 1815, p. 238. Anodontes CUVIER, Regne An.., II, 1817, p. 472. Shell elliptical, thin, inflated, often slightly winged posteriorly; beak sculpture consisting of rather numerous more or less parallel ridges, usually somewhat doubly looped, and becoming slightly nodulous on the loops; surface generally smooth, shining; hinge edentulous, reduced to a mere line, regularly curved; muscle scars rather faint; nacre dull. Animal with the marsupium occupying the whole outer gills, when filed forming a smooth, very thick, liver-colored pad; gills free from the abdominal sac from one-half to their entire length; palpi generally large; branchial opening papillose; anal opening without papille, though sometimes very slightly crenulate; superanal opening gener- ally small, widely separated from the anal. (Group of Anodonta cygnea.) Shell very evenly rounded in front, pointed behind, the point elevated above the base, more or less winged on post dorsal part, the line from the posterior part of the wing to the hinder point usually incurved; beaks flattened, the sculpture consisting of numerous more or less con- centric ridges, which are sometimes broken up into rather irregular corrugations. Animal with the inner gills the larger, free from the abdominal sac nearly or quite their whole Hun palpi large. 'T can eae matin out of /nng, Aine figure Dome poor and the description meager. Conrad places it in Strophitus in his Synopsis, 1853. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 621 tANODONTA CYGNEA Linneus.! *Mytilus cygneus LINN&US,*? Syst. Nat., 10th ed., 1758, I, p. 706, No. 1158.— *MULLER, Vermium, II, 1774, p. 208.—* Da Cosra, Hist. Nat. Test. Brit., 1778, p. 214, pl. xv, fig. 2.—* GMELIN, Syst. Nat., 13th ed., 1778, p. 3335.— *ScCHROTER, Flussconch., 1779, p. 162, pl. m1, fig.1; * Ein. Conch., III, 1783, p. 440.—* Oxrvi, Zool. Adr., 1792, p. 125.—* Donovan, Brit. Shells, JI, 1800, pl. Lv.—MontaGu, Test. Brit., 1803, p. 170.—Turron, Brit. Faun., 1807, p. 165.—* MaTon and Rackert, Tr. Linn. Soc. Lond., VIII, 1807, p. 109, pl. 11, figs. 2, 3.—* SCHUMACHER, Ess. Nouv. Syst., 1817, p. 106.—* DILLWyn, Cat., 1817, p. 315.—TuRTON, Conch. Dict. 1819, p. 115.—* SHEPPaRD, Tr. Linn. Soc. Lond., XIII, 1820, p. 84, pl. v, fig. 3.—* Woop, Ind. Test., 1825, p. 58, pl. xu, fig. 32 f.—* HANLEY, Ipsa Linn. Conch., 1855, p. 487.—* Woop, Ind. Test. Rev., 1856, p. 69, pl. x1, fig. 32. * Anodontes cygneus CUVIER, Regne An., II, 1817, p. 472. *Anodon cygneus TURTON, Conch. Ins. Brit., 1822, p. 239.—* FLEMING, Hist. Brit. Moll., 1828, p. 415.—* Turton, Man. L. and F. W. Shells, 1831, p. 17, fig. 8.— * BRowN, Land and F. W. Conch., 1836, p. 99, pl. x1, figs. 1-3e.—* THompson, Ann. and Mag. N. Hist., VI, 1840, p. 196.—* Brown, Ill. Rec. Conch., 1844, p. 79, pl. xxvitl, ete.—* TURTON, Man. L. and F. W. Shells, 1857, p. 271, fig. 65, pl. 1, fig. 8.—* Tarte, L. and F. W. Moll. Brit., 1866, pl. 1.—*SowkrrBy, Conch. Icon., XVII, 1870, pl. 1, fig. 2. *Anodonta cygnea DRAPARNAUD, Hist. Moll. Fr., 1806, p. 154, pl. xu, fig. 1; pl. x1, fig.6.—* MILLET, Moll. Maine et Loire, 1813, p. 76.—* GAERTNER, Vers. Syst., 1813, p. 38.—* BRARD, Hist. Coq. Paris, 1815, p. 234, pls. 1x, x.—* KLEEs, Desc. Test., 1818, p. 43.—* Lamarck, An. sans Vert., VI, 1819, p. 84.—* C. PFEIFFER, L. and 8. Moll., 1821, Pt. 1, p. 111, pl. v, fig. 4.—Bosc, Hist. Nat. Coq., 1824, III, p. 142.—* BLaINVILLE, Man., 1825, p. 358, pl. Lxvi, fig. 1.—* WAARDENBERG, Com. Hist. Nat. An., 1827, p.37.—* Stark, Nat. Hist., 1828, II, p.89.—*GuERIN, Icon. Regne An., II, 1829, pl. xxvi, fig. 5.—* ROSSMASSLER, Icon., I, 1835, p. 111, pl. 1, fig. 67, etc.—* GouPIL, Hist. Moll. Sarthe, 1835, p. 81.—* Wyatt, Man. Conch., 1838, p. 68, pl. x1, fig. 2.—* Porro, Mal. Como., 1838, p. 110.— *GRAS, Moll. Isere, 1840, p. 70, pl. v1, fig. 7.—* HANLEy, Test. Moll., 1842, p. 216; *Biv. Shells, 1843, p. 216.—* Scuouz, Schleis. L. and W. Moll., 1848, p. 118.—* MORELET, Moll. Port., 1845, p. 100.—*PuTon, Moll. Vosges, 1847, p. 68.—* GASSEIZ, Moll. Ag., 1849, p. 189.—*SrEIn, Die Leb. Schneck., 1850, 1The number of specific names bestowed on the Anodontas of Kurope must run up into the thousands. I have gone over the literature as carefully as possible, and large series of specimens from many localities, and I confess that I am absolutely unable to separate these forms specifically. The variations of form, size, color, solidity, and even texture are sufficient for a large number of species if they were not everywhere connected by intermediate examples. The new school of concholo- gists has named every conceivable variation, and in very many cases distorted individuals. Europe is a densely settled region, and it is possible that the waters of the streams and ponds in many places may be so affected by sewage and other offal as to produce many changes in the mollusks living in them. I shall attempt to recognize a few of the leading forms as varieties, referring them to the author originally describing them, but on account of the enormous amount of literature pertaining to these forms and its confused condition, I can not attempt to trace out these varieties among the descriptions of subsequent writers. 2According to Hanley (Shells of Linnzeus, p. 144) the A. cygnea var cellensis of Rossmassler (Icon., 1V, 1830, pl. x1x, fig. 280) is marked for this in the Linnzan cab- inet. Itisa large, rather elongated shell, slightly biangulate behind, somewhat cut away on the upper posterior part, and having fairly full beaks. 622 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. p. 100.—* DRougET, Nay. Fr., 1852, p. 5, pl. 1; *Rev. et Mag., IV, 1852, p.55.— *Dupvy, Hist. Moll. Fr., 1852, p. 601, pl. xv, fig. 14.—* ForBEs and HaNLEy, Hist. Brit. Moll., II, 1853, p. 155, pl. xx xix, fig. 3; x1, figs. 2, 8; xL1.—* Kus- TER, Conch. Cab. Ano., 1853, p. 58, pl. xv.—VON WaAUBL, Arch. fiir Natur K. Liv., 2d ser., I, 1855, p. 183.—* Moquin-Tanpon, Moll. Fr., II, 1855, p. 557, pl. xLtiv.—* VON WAHL, Suss. Biv. Liv., 1855, p. 133.—* NoORDENSKIOLD and. NYLANDER, Fin. Moll., 1856, p. 90, pl. vu, fig. 78.—H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 502; ILI, pl. cx vit, figs. 1, la, 1b.—* CHENU, Man., 1859, IT, p. 145, fig. 718.—* SowERBy, IJ]. Index Brit. Shells, 1859, pl. vir, No. 4.— REEVE, Elements of Conch., IT, 1860, pl. p, No. 4.—* JEFFREYS, Brit. Conch., I, 1862, p. 41.—* RrxEve, L. and F. W. Moll. Br., 1863, p. 215, fig. 1.—* Biz, Faun. Sieben, 1863, p. 195.—* HoueuTon, Int. Obs.,-1864, p. 68, pl. [1], figs. 1, 2.—* Brot, Etudes Nayades, Leman, 1867, p. 28, pl. 1, fig.1; pl. 11, figs. 1, 2.— * KOBELT, Faun. Nass. Moll., 1871, p. 247.—* WESTERLUND, Faun. 8. N. and D., 1873, p. 583.—DRovET, Mem. Acad. Dijon, VIII, 1882, p. 25 (reprint).—* L. Apams, Coll. Manual, 1884, p. 21, pl. 11, fig. 1.—* Pa Tex, Conch. Sam., III, 1890, p. 178.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 199.—* Locarp, Coq. de Fr., 1893, p. 234. win crenvone! Act. Soc. F. and F. F., XIII, No. 7, 1897, p. 168. Symphynota cygnea LEA, Tr. Am. Phil. Soc. 1830, p. 456; Obs., I, 1834, p. 70. *Margarita (Anodonta) cygnea LEA, Syn., 1836, p.48; 1838, p. 29. *Anodon cygnea CROUCH, Il. Int. Lam., 1827, pl. 1x, fig. 6. CaTLow and REEVE, Conch. Nom., 1845, p. 66. “Margaron (Anodonta) cygnea LEA, Syn., 1852, p. 47; 1870, p. 76. * Anodonta cygnea GAssEIS, Moll. Ag., 1849, p. 189. “Anodonta radiatus MULLER, Vermium, 1774, p. 209. * Mytilus zellensis GMELIN, Syst. Nat., 13th ed., I, 1788, p. 3262. * Anodonta zellensis WAARDENBERG, Hist. Nat. Animalium, 1827, p. 37. “Anodonta cellensis C. PFEIFFER, Deuts. L. and Suss. Moll., I, 1821, p. 110, pl. v1, fig. 1.—* Bosc, Hist. Nat. Coq., III, 1824, p. 144.—* RossmassLEr, Icon., IV, 1836, p. 22, pl. x1x, fig. 280.—* ScHouz, Schleis. L. and W. Moll., 1843, p.119.— *STABILE, Faun. Lug., 1845, p. 58, pl. 11, fig. 69.—* TROSCHEL, Arch. fiir Nat., XIII, Pt. 1, 1847, p. 272.—* Drs Mouttns, Actes. Soc. L. Bord, XVIII, 1852, p. 495.—* DROUET, Rev. et Mag., IV, 1852, p.60.—* Dupuy, Nay. Fr. No. 2, 1852, p.11, pl. 11.—*KustTER, Conch,Cab.Ano., 1853, p. 16, pl. Iv, fig. 3; v, figs. 1-4; v1, fig. 1.—* Binz, Faun. Sieben., 1863, p. 197.—*Bror, Coq. Leman, 1867, p. 33, pl. 11, figs. 1-3; Iv, figs. 1, 2; vi, fig. 4.—*ScHRENCK, Reis. und F. Am. L., II, 1867, p. 722.—* KoBELT, Faun. Nass. Moll., 1871, p. 251.—* LEHMAN, Die Schneck., 1873, p. 297.—*P&TEL, Conch. Sam., III, 1890, p. 177.—*WEsTER- LUND, Faun. Pal., II, Pt. 7, 1890, p. 211. *Anodonta variabilis DRAPARNAUD, Tab. Moll. Fr., 1801, p. 108.—FouRNEL, Faun. Moselle, I, 1836, p. 487. * Mytilus avonensis MONTAGU, Test. Brit., 1803, p. 172.—*TuRTON, Conch. Dict., 1819, p. 116.—* Woop, Ind. Test. Rev., 1856, p. 69, pl. x11, fig. 34. * Anodon avonensis, TURTON, Conch. Ins. Brit., 1822, p. 211. * Anodonta avonensis MOQUIN-TANDON, Moll. France, II, 1855, p. 562, pl. xvi, figs. 7, 8. * Mylilus avoensis TURTON, Brit. Faun., 1807, p. 165. * Mytilus stagnalis TURTON, Brit. Bae , 1897, p. 165.—* DILLWYn, Cat. I, 1817, p. ~ 316.—TuRTON, Conch. Dict., 1819, p. 115. * Anodonta stagnalis Bosc, Hist. Nat. Coq., III, 1824, p. 143.—* WESTsRLUND, Faun. Pal., II, Pt. 7, 1890, p. 199.—* LocarD, Coq. Fr., 1893, p. 228. * Mytilus fucatus DILLWYN, Cat. I, 1817, p. 317. * Anodonta sulcata LAMARCK, An. sans Vert., VI, 1819, p. 85.—* NILsson, Hist. Moll. Svec., 1822, p.113.—* DESHAYES, Enc. Meth., II, 1827, p. 147, pl. cc11.—* KLEE- a NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 623 BERG, Moll. Bor., 1828, p.36 —* DEsHAYEs, An. sans Vert., 2d ed., VI, 1835, p. 566; 3d ed., II, 1839, p. 678.—* HANLEY, Biv. Shells, 1843, p. 216. * Anodonta intermedia LAMARCK, An. sans Vert., VI, 1819, p.86.—* C. PFEIFFER, Deuts. L. and S. Moll., 1821, Pt. 1, p. 113, pl. v1, fig. 3.—* Nixsson, Hist. Moll. Svec., 1822, p. 117. —* WAARDENBERG, Hist. Nat. Animalium, 1827, p. 37.— * DESHAYES, Enc. Meth., II, 1827, p. 147, pl. cct, fig. 2.—* PHTEL, Conch. Sam., III, 1890, p. 180.~.* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p.74.—* Locarp, Coq. de Fr., 1893, p. 263. *Anodon intermedia CATLOW and REEVE, Conch. Nom., 1845, p. 67. *Anodon intermedius KENYON, Mag. Nat. Hist., I, 1829, p. 426, fig. 185. * Mytilus incrassatus SHEPPARD, Tr. Linn. Soc. Lond., XIII, 1820, p. 85, pl. v, fig. 4. * Anodonta incrassata LOCARD, Coq. de Fr., 1893, p. 260. * Mytilus macula SHYPPARD, Tr. Linn. Soc. Lond., XIII, 1820, p. 86, pl. v, fig. 6. * Anodon paludosus TURTON, Conch. Ins. Brit., 1822, p. 240, pl. xv, fig. 6. * Anodonta piscinalis NILSSON, Hist. Moll.Svee.,1822, p. 116.—* ROsSMASSLER, Icon., IV, 1836, p. 23, pl. x1x, fig. 281,etc.—* HANLEY, Biv. Shells, 1843, p. 216.—*Gas- sIEs, Moll. Agen., 1849, p. 191, pl. 1v, fig. 1.—* DrovUET, Rev. et Mag., IV, 1852, p. 285.—* Dupuy, Hist. Moll. Fr., 1852, p. 612, pl. xx1, figs. 17, 18.—* Drover, Nay. France, No. 5, 1852, p.11, pl.v, fig. 1.—* DEs MouLins, Actes Soc. L. Bord., XVIII, 1852, p. 496.—* Kuster, Conch. Cab. Ano., 1853, p. 45, pl. 011, figs. 4, 5.— * MOQUIN-TANDON, Moll. Fr., II, 1855, p. 561, pl. xiv, figs. 5,6; XLVI, figs. 1, la.—* KOBELT, Faun. Nass. Moll., 1871, p. 249.—* LEHMAN, Die Schnecken, 1873, p. 800.—* P&TEL, Conch. 3am., III, 1890, p. 183.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 284; * Kong. Svensk. Vet. 1876, XIV, No. 12, p. 66. *Anodonta ventricosa C. PFEIFFER, Doeuts. L. and Suss, Moll., Pt. 2, 1825, p. 30, pl. 111, figs. 1-6.—* DROUET, Rev. et Mag., IV, 1852, p.58; Nay. France, No. 2, 1852, p. 6.—* Kuster, Conch. Cab. Ano., 1853, p.56, pl. x1, figs. 3-5.—* Brot, Coq. Fam. Nay. Lem., 1867, p. 82.—* DROUET, Mem. Ac. Dij., 3d ser., VII, 1882, p. 29 (reprint).—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 203.—* LocarD, Coq. de Fr., 1893, p. 230. : Anodonta minima MILLET, Mem. Soc. Agr., Aug., 1833, p. 241, pl. xu, fig. 2.—* CaT- LOW and REEVE, Conch. Nom., 1845, p.67.—* Dupuy, Hist. Moll. Fr., 1852, p. 611, pl. xx, fig. 20.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 277.— * LOCARD, Coq. de Fr., 1893, p. 307. Anodonta oblonga MILLET, Mem. Soc. Agr., Aug., 1833, p. 242, pl. x11.—* DROUET, Rev. et Mag., IV, 1852, p.63; Nay. Fr., No. 2, 1852, p.14; His. Moll. Fr., 1852, p. 65, pl. xvi, fig. 13.—* WESTERLUND, Faun. Pal., II. Pt. 7., 1890, p. 215.— * LOCARD, Coq. de Fr., 1893, p. 273. * Anodon oblongus SOWERBY, Conch. Icon., X VII, 1867, pl. xv, fig. 54. ’ * Anodonta attenuata HELD, Isis, 1836, p. 280. * Anodonta exulcerata PORRO, Mal. Como., 1838, p. 111, pl. 1, fig. 12.—* CaTLow and REEVE, Conch. Nom., 1845, p. 66.—* SowERBY, Conch. Icon., XVII, 1870, pl. XXXII, fig. 131.—* CLEssin, Conch. Cab. Ano., 1874, p. 127, pl. x1, figs. 3, 4.—- * WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 262.—* Locarp, Coq. de Fr., 1893, p. 289. * Anodonta coarctata POTIEZ and MICHAUD, Gall. Moll., 1844, p. 142, pl. tv, fig. 2.— *Dupvy, Hist. Moli. Fr., 1852, p.616, pl. xx, fig. 51. *Anodonta elongata PotiezZ and MicHaup, Gall. Moll., 1844, p. 141, pl. Lv, fig. 1.—* Puton, Moll. Vosges, 1847, p. 69.—* Dupvy, Hist. Moll. Fr., 1852, p. 620, pl. xvi, fig. 16.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 307. * Anodonta glabra STABILE, Faun. Lug., 1845, p. 58, pl. 11, fig. 68.!—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 257. “Anodonta lusitana MORELET, Moll. Port., 1845, p. 103, pl. xu, fig. 1.—* CLESSIN, \Credited to Ziegler by Stabile. 624 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL, ; | Conch. Cab. Ano., 1873, p. 85. pl. x x11, fig. 1.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 256. * Anodonta regularis MORELET, Moll. Port., 1845, p. 100, pl. x.—* CLEssin, Conch. Cab. Ano., 1873, p. 85, pl. xxi, fig. 2.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 208. * Anodonta macilenta MORELET, Moll. Port., 1845, p. 102.—* CLessin, Conch. Cab. Ano., 1878, p. 87, pl. xxiv, fig. 2.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 227.—* PmTEL, Conch. Sam., III, 1890, p. 181. * Anodonta ranarwm MORELET, Moll. Port., 1845, p. 104, pl. xm, fig. 2,—* CLESSIN, Conch. Cab. Ano., 1873, p. 86, pl. x x11, fig. 3.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 217. * Anodonta atrovirens PHILIPPI, Menke’s Zeits., 1848, p. 130.—*SOWERBY, Conch. Icon., XVII, 1867, pl. x11, fig. 41. * Anodonta milletit Ray and DROUET, Rev. Zool., 1848, p. 3, pl.1, figs. 1-2.—* Dupuy, Hist. Moll. Fr., 1852, p. 617, pl. xx1, fig. 16.—* DROUET, Nay. France, 1852, p. 15.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 502.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 291.—* Locanp, Coq. de Fr., 1893, p. 296. * Anodonta grateloupiana Gasstus, Moll. Agenais, 1849, p. 193, pl. 1, figs. 13-15; pl. m1, fig. 1,1B; pl. 1v, fig. 2.—* Drs Moutins, Actes Soc. L. Bord., XVIII, 1852, p. 496.—* P@TeEL, Conch. Sam., III, 1890, p. 180.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 303. * Pseudonodonta grateloupiana BOURGNIGNET, Mat. Moll. Aceph., I, 1881, p. 29. *Anodonta dupuyt RAY and DROUET, Rev. Zool., 1849, p. 32, pls. 1, 11.—* DROUET, Rev. et Mag., 1849, p. 11, pl. m1, figs. 1-2; * Nay. Fr., 1852, pl. vu.—* Dupuy, Hist. Moll. Fr., 1852, p. 606, pl. xvu, fig. 13.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 234.—* LocarD, Coq. de Fr., 1893, p. 254. Anodonta rayi DROUET, Cat. Extram., 1849, No. 35.—* Dupuy, Hist. Moll. Fr., 1852, p. 614, pl. xx, fig. 22.—* SowERBY, Conch. Icon., XVII, 1867, pl. xrx, fig. 72.—* WESTERLUND, Faun. Pal., Ii, Pt. 7, 1890, p. 254.—* Locarp, Coq. de Fr., 1893, p. 276. * Anodonta idrina SPINELLI, Cat. Moll. Bresc., 1851, p. 19, pl. 1, fig. 1.—* CLESSIN, Conch. Cab. Ano., 1875, p. 167, pl. Lv, figs. 1, 2.—* KoBETT, Icon., IV, 1876, p. 67, pl. Cxx, figs. 1156-1159.—* CLEssin, Moll. Oest., 1887, p. 712, fig. 484.— * WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 258. * Anodonta arelatensis DupUY, Hist. Moll. Fr., 1852, p. 611, pl. xrx, fig. 14.— * WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 264. * Anodontites europe LEACH, Syn. Moll. Gt. Br., 1852, p. 326. * Anodonta. moulinsiana DuPuY, Hist. Moll. Fr., 1852, p. 614. pl. xx, fig. 19.—* DEs Mou.ins, Actes Soc. L. Bord., XVIII, 1852, p. 494.—* Drovurt, Nay. Fr., 1854, p. 5.—* Kosx tt, Icon., VI, 1879, p. 45, pl. cLXv, fig. 1055.—* WESTERLUND, Faun. Pal., Il, Pt. 7, 1890, p. 217. * Anodonta normandi Dupuy, Hist. Moll. Fr., 1852, p. 620, pl. xv1, fig. 15.— *SOwWERBY, Conch. Icon., XVII, 1870, pl. xxvuiul, fig. 109.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 303. * Anodonta parvula DROUET, Nay. Fr., No. 5, 1852, p. 9, pl. 1v, fig. 2.—* WESTER- LUND, Faun. Pal., II, Pt. 7, 1890, p. 265.—* Locarp, Coq. de Fr., 1893, p. 283. * Anodonta rossmassleriana Dupuy, Hist. Moll. Fr., 1852, p. 608, pl. xvi, fig. 14.—* DROUET, Nay. Fr., No. 5 and 6, 1854, p. 6.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 257.—Locarp, Coq. de Fr., 1893, p. 266. * Anodonta subponderosa Dupuy, Hist. Moll. Fr., 1852, p. 607, pl. xvi, fig. 14.— * WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 234.—* Locarp, Coq. de Fr., 1893, p. 252. *Anodonta tenella KUSTER, Conch. Cab. Ano., 1852, p. 63, pl. Ix, fig. 5. * Anodonta scaldiana DuPUY, Hist. Moll. Fr., 1852, p. 613, pl. xx, fig. 12.—* KOBELT, Icon., VII, 1880, p. 35, pl. cxcrv, fig. 1960.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 251,—* LocakrD, Coq. de Fr., 1893, p. 272. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 625 * Anodonta luxata KUSTER, Conch Cab. Ano., 1853, p.9, pl. 111, fig. 1.—* WEsTER- LUND, Faun. Pal., II, Pt. 7, 1890, p. 238; Locarp, Coq. de Fr., 1893, p. 267. * Anodonta callosa KUSTER, Conch. Cab. Ano., 1853, p. 36, pl. Ix, fig. 1.—* WusTER- LUND, Faun. Pal., II, Pt. 7, 1890, p. 270. * Anodonta cariosa KUSTER, Conch. Cab. Ano., 1853, p. 43, pl. Iv, fig.3; v, fig.1; x, figs. 1, 2.—* Drougrt, Mem. Ac. Dij., VII, 1882, p. 27 (reprint).—* WEsSTER- LUND, Faun: Pal., II, Pt.7, 1890, p.216.—* LocaRD, Coq. de Fr., 1893, p. 236. “Anodonta arealis GRIT, Conch. Cab. Ano., 1853, p. 47, pl. 1x, figs. 2-4.—* WxEsT- ERLUND, Faun. Pal., II, Pt. 7, 1890, p. 263. om LocaRD, Coq. de Fr., 1893, p. 280. * Anodonta charpentiert CSTE, Conch. Cab. Ano., 1853, p. 49, pl. x1, figs. 3, 4.— * SOWERBY, Conch. Icon., XVII, 1867, pl. xu, fig. 37. *Anodonta anserirostris KUSTER, Conch. Cab. Ano., 1853, p. 55, pl. x, fig.3; x1, figs. 1,2.—* DrovuEtT, Mem. Ac. Dij., VII, 1882, p. 28.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 214. "Anodonta inornata KUSTER, Conch. Cab. Ano., 1853, p. 42, pl. 111, fig. 6.—* WESsT- ERLUND, Faun. Pal., II, Pt. 7, 1890, p. 238.—* LocarRD, Coq. de. Fr., 1893, p. 267. * Anodonta tumida KusTER, Conch, Cab. Ano., 1853, p. 48, pl. x11, figs. 1, 2.—* WEsT- ERLUND, Faun. Pal., II, Pt. 7, 1890, p. 240. *Anodonta subluxata KUSTER, Conch. Cab. Ano., 1853, p. 52, pl. x1, figs. 1, 2.— * WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 258.—* Locarp, Coq. de. Fr., 1893, p. 287. * Anodonta sondermannii Kuster, Condi Cab. Ano., 1853, p. 54, pl. x11, fig. 4.— * WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 240. * Anodonta opalina KUSTER, part, Conch. Cab. Ano., 18538, p. 60, pl. x1, figs. 1, 2.— *DrouEt, Mem. Ac. Dij., VII, 1882, p. 30 (reprint).—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 284. * Anodonta nilssonii KUSTER, part, Conch. Cab. Ano., 1853, p. 61, pl. x v1, fig. 2.! * Anodonta helvetica BOURGUIGNAT, Rey. et Mag., XV, 1863, p. 22 (pl. xx in vol. XIV, figs. 1, 2).—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 249. * Anodonta melinia BOURGUIGNAT, Moll. peu. Con., 1863, p. 50, pl. xx v1. —* BOUR- GUIGNAT, Rev. et Mag., 1865,. pl. xxiv, figs. 1-5.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 229 * Anodonta elachista BOURGUIGNAT, Moll. peu. Con.,1863, p. 60, pl. Xx x1, figs. 12-14. * Anodonta psammita BOURGUIGNAT, Rey. et Mag., XV, 1863, p. 21 (pl. xx1 in vol. XIV, figs. 1-4).—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 269. * Anodonta pictetiana Brot, Etude Coq. Lem., 1867, p. 45, pl. vill, figs. 1-3.— * WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 288. * Anodon simplicidus SOWERBY, Conch. Icon., XVII, 1867, pl. x11, fig. 40. +ANODONTA CYGNEA var. ANATINA Linneus.’? *Mytilus anatinus LinNwus, Syst. Nat., 10th ed., I, 1758, No. 1168.—* MULLER, Vermium, 1774, p. 207.—* Da Costa, Hist. Nat. Test. Brit., 1778, p. 2151, pl. XV, fig. 2.—* SCHROTER, Flussce., 1779, p. 160, pl.1, figs. 2,3; * Ein. Conch., III, 1783, p. 442.—* CHEMNITZ, Conch. Cab., VIII, 1785, p. 189, pl. LXXxVI, fig. 763.—* GMELIN, Syst. Nat., 13th ed., 1788, p. 3355.—* OLIvI, Zool. Adr., 1792, p. 125.—* Donovan, Brit. Shells, IV, 1802, pl. cx1m.—* MonTacu, Test. Brit., 1803, p. 171.—* TuRTON, Brit. Faun., 1807, p. 165.—* MaTon and RackETT, Tr. Linn. Soc. Lond., VIII, 1807, i 110, pl. 11a, figs. 1, 4.—* SCHUMACHER, Ess. 1 Kuster’s A Ames on Plate xvi, sansa he gives for this species, are the 4. footiana Lea. This figure is 4. cygnea. 2According to Hanley (Shells of Linneus, p. 144), the Anodonta complanata in Rossmassler, Icon., Pt. 4, Plate xx, fig. 283, is contained in the box in the Linnean collection marked anatina. This is a rather small, compressed form, slightly angular in front and behind. Proc. N. M. vol. xxii——46 626 10) PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Noe ‘Shieh 1817, p. 107, “ah 3 I, fae 5.—* DILLWYN, Cat., I, 1817, p. 317.— TURTON, Conch. Dict., 1819, p. 116. —* SHEPPARD, Tr. ane Soc. Lond., XIII, 1820, p. 85, pl. v, fig. 5.—* Woop, Ind. Test., 1825, p. 58, pl. xu, fig. 33e.— * HANLEY, Ipsa. abrir, Conch., 1855, pl. 487, “ik Il, , fig. 1.—* Woop, Ind. Test. Rev., 1856, p. 69, pl. x11, fig. 33. * Anodon anatinus TURTON, Conch. Ins. Brit., 1822, p. 240.—* SOWERBY, Rec. and Fos. Sh., XVII, 1823, fig.—* Sree, Hist. Brit. Moll., 1828, p. 415.— * REEVE, Conch. Syst., I, 1841, p. 121, pl. xct, figs. 1, 2. *tnodonta anatina DRAPARNAUD, Hist. Moll. Fr., 1806, p. 135, pl. x11, fig. 2.— * GAERTNER, Vers. Syst., 1813, p. 37.—* MILLET, Moll. Maine et Loire, 1813, p-. 75.—KLEEs, Desc. Test., 1818, p. 42.—* Lamarck, An. sans Vert., VI, 1819, p. 85.—* C. PFEIFFER, Deuts. L. und S. Moll., 1821, Pt.1, p. 112, pl. vi, fig. 2.— * NILSSON, Hist. Moll. Svec., 1822, p. 114.—* Bosc, Hist. Nat. Coq., III, 1824, p. 143, pl. xx1ul, fig. 1.—* WAARDENBERG, Com. Hist. N. An., 1827, p. 37.— Stark, Nat. Hist., II, 1828, p. 89.—* KLEEBERG, Moll. Bor., 1828, p. 37.— * ROSSMASSLER, Icon., V and VI, 1837, p. 57, pl. xxIx, figs. 417-420.—* Porro, Mal. Como., 1838, p. 109.—* HAaNLEY, Test. Moll., 1842, p. 216; Biv. Shells, 1843, p. 216.—* SrTaBILE, Faun. Lug., 1845, p. 57, pl. m1, fig. 67.—* PUTON, Moll. Vosg., 1847, p. 68.—* GassixEs, Moll. Ag., 1849, p. 190.—* MIDDENDORFF, Sib. Reise, II, 1851, p. 283, pl. xx1, fig. 4; xx¥Ex, figs. 5, 6.—* DROUET, Rev. et Mag., IV, 1852, p. 244; Nay. Fr., 1852, p.4, pl.1v, fig. 1.—* Dupuy, Hist. Moll. Fr., 1852, p. 610, pl. x1x, fig. 18.—* FRIELE, Norsk. L. Fersk. Moll., 1853, p. 54.—* VON WAHL, Suss. Biv. Liv., 1855, p. 122.—* Moquin-TaNnpDon, Moll. Terr. et FI. Fr., II, 1855, p. 558, pl. xv, figs. 1, 2.—* JEFFREYS, Brit. Conch., J, 1862, p. 43.—* SCHRENCK, Reis. und Forsch. Am. L., II, 1867, p. 721.— Brot, Etude Nay. Lem., 1867, p. 38, pl. 111, fig. 4; v, fig. 2; vi, figs. 1-3; vil, figs. 1-3.—* LEHMAN, Die Schneck., 1873, p. 303.—* WESTERLUND, Faun. S. N. and D., 1873, p. 587.—* CLEssIn, Conch. Cab. Ano., 1876, p. 83, pl. xIv, figs. 3, 45 XXVI, figs. 1, 2.—* L. Apams, Coll. Man., 1884, p. 21, pl. 11, fig. 2.—* Pa TEL, Conch. Sam., III, 1890, p. 176.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 225.—* LocarD, Coq. de Fr., 1893, p. 275. * dnodon anatina CATLOW and REEVE, Conch. Nom., 1845, p. 66. ‘nodonta complanata ROSSMASSLER,! Icon., I, 1835, p. 112, pl. 111, fig. 68, IV, p. 24, pl. xx, fig. 283.—ScHouz, Schleis. L. und W. Moll., 1843, p. 123.—* KUSTER, Conch. Cab. Ano., 1853, p. 12, pl. 111, figs. 2, 3.—* DRoUET, Nay. Fr., 1854, p. 8, pl. vu, fig. 1.—* Moquin-Tanpon, Moll. Terr. et Fluv. Fr., I1, 1855, p. 560, pl. XLV, figs. 3,4.—* von WaHL, Arch. fiir Nat. Kund. Liv., 2d ser., I, p. 115.— * WESTERLUND, Faun. S. N. & D., 1873, p. 586.—* CLESSIN, Nach. Mal. Ges., 1874, p.85;% Deuts. Ex. Moll., 1876, p. 446, fig. 292.—* KoBELT, Icon., VI, 1879, p. 44, pl. cLxv, fig. 1650-1654.—* DRovuET, Mem. Ac. Dij., VII, 1882, p. 24 (re- print).—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 301.—* P&TEL, Conch. Sam., III, 1890, p. 178. * dAnodon complanatus SOWERBY, Conch. Icon., XVII, 1867, pl. 1x, fig. 21 + ANODONTA CYGNEA var. PONDEROSA C. Pfeiffer. * Anodonta ponderosa C. PFEIFFER, Deuts. L. und S. Moll., 1825, Pt. 2, p. 31, pl. Iv, figs. 1-6.—* WAARDENBERG, Com. Hist. Nat. An., 1827, p. 37.—* KLEEBERG, Moll. Bor., 1828, p.37.—* ROSSMASSLER, Icon., IV, 1836, p. 24, pl. xx, fig. 282.— Porro, Mal. Como., 1838, p. 112.—* HANLEY, Biv. Shells, 1843,p. 216.—ScHOLz, 1Credited to Ziegler Museum by Rossmassler. It was published under the name Anodonta compressa in Menke’s Synopsis, 1831, but not described. 2 According to Clessin in this paper this is the only European species distinct from A. cygnea, NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 627 Schl. L. & W, Moll., 1843, p. 122.—* Dupuy, Hist. Moll. Fr., 1852, p. 604, pl. Xvill, fig. 12.—* KusTER, Conch. Cab. Ano., 1853, p. 13, pl. 1v, fig. 1.—* Drou- ET, Nay. Fr., 1854, p. 2, pl. vi.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 233. +, ANODONTA CYGNEA var. ROSTRATA Rossmassler,! * Anodonta rostrata ROSSMASSLER, Icon., IV, 1836, p. 25, pl. xx, fig. 284.2—* Cat- Low and REEVE, Conch. Nom., 1845, p. 67.—* STABILLE, Faun. Lug., 1845, p. 59, pl. 11, fig. 70.—* DROUET, Rev. et Mag., IV, 1852, p. 288; Nay. Fr., 1852, p. 14, pl. Vv, fig. 2.—* KusTER, Conch. Cab. Ano., 1853, p. 14, pl. 1v, fig. 2.—* BourGuI- GNAT, Rev. et Mag., XV, 1863, p. 23, (also XIV, pl. xx1, fig. 5.)—* Drover, Mem. Ac. Dij., VII, 1882, p. 37 (reprint).—* PasTEL, Conch. Sam., III, 1890, p. 184.—* WESTERLUND, Faun. Pal., II, Pt.7, 1890, p. 246. *Anodon rostratus SOWERBY, Conch. Icon., X VII, 1867, pl. 11, tig. 4. Europe generally; Siberia; southward, perhaps, into Asia Minor. It has been reported from the Amoor River drainage, but | presume that the specimens from that region belong to the group of A. woodianua. ANODONTA RETTERI Drouet. * Anodonta retteri DROUET, J]. de Conch., 1899, p. 402, fig. Pond in the palace of the governor of Samarcand, Turkestan; very much like varieties of A. cygnea. tANODONTA LUCASI Deshayes.? “Anodonta lucasi DESHAYES, Hist. Nat. Moll. Alg., 1848, pl. cviu, figs. 1, 2.— *MORELET, J. de Conch., II, 1851, p. 359.—* BouRGUIGNAT, Mal. Alg., 1864, II, p. 296, pls. XXIII, XXIV, fig. 1.—* SOWERBY, Conch. Icon., XVII, 1867, pl. xvut, fig. 64.—* P&TEL, Corch. Sam., ITI, 1890, p. 181. * Margaron ( Anodonta) lucasii LEA, Syn., 1870, p. 78. “Anodonta embia BOURGUIGNAT, Mal. Alg., 1864, II, p. 297, pl. xxv.—* P&TEL, Conch. Sam., III, 1890, p. 179. Algiers. ANODONTA CILICIA Kobelt. t Anodonta cilicia KOBELT, Icon. Ist Supp., 1895, p. 24, pl. vira, fig. 1. Cilicia, north of Tarsus. ANODONTA NUMIDICA Bourguignat. “Anodonta numidica BOURGUIGNAT, Mal. Alg., 1864, IT, p. 298, pl. xx1v, figs. 2-6.— *P2#TEL, Conch. Sam., ITI, 1890, p. 182. “Anodonta letourneauxt BOURGUIGNAT, Mal. Alg., 1864, II, p. 299, pl. xxvi, figs. 2-6.—* Pa TEL, Conch. Sam., ITI, 1890, p. 181. Algiers. 'Credited by Rossmassler to Kokeil Museum. 2There is an Anodonta rostrata Held in Isis, 1836, page 280. I do not know whether it or that of Rossmassler was published first, or whether the two are the same or not. %Probably a valid species, yet some specimens apparently belonging to it are cer- tainly very much like forms of cygnea. 628 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XX. ANODONTA SUBCIRCULARIS Clessin.! * Anodonta subcircularis CLESSIN, Conch. Cab. Ano., 1873, p. 87, pl. XX, pee 3, 4. Scutari Lake, European Turkey. ANODONTA VESCOIANA Bourguignat. *Anodonta vescciana BoURGUIGNAT, Ann. Mal., IT, 1857, p. 34, pl. 1, figs. 1, 2.— * CLESSIN, Conch. Cab. Ano., 1873, p. 100, pl. x XIX, figs. 1, 2.—* KoBELT, Icon., VII, 1880, p. 83, pl. covu, fig. 2102.—* Pare, Conch. Sam., III, 1890, p. 186.— * WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 201. *Margaron (Anodonta) vescoiana LEA, Syn., 1870, p. 81. -Asia Minor. + ANODONTA BERINGIANA Middendorff. * 4nodonta cellensis SCHROTER var. beringiana MIDDENDOREF, Sib. Reise, IT, 1851, p. 284, pl. xxvu1, figs. 4-7; xxrx, figs. 1-4.—* CLEssIn, Conch. Cab. Ano., 187&, p. 211, pl. LXV, figs. 1, 2. * Anodonta youconensis LEA, Pr. Ac. Nat. Sci. Phila., XI, 1867, p. 81. *Anodonta youkanensis LEA, JI. Ac. Nat. Sci. Phila., VI, 1¢68, p. 287, pl. x1, fig. 99; Obs., XII, 1869, p. 47, pl. xu, fig. 99.—* CLEssIn, Conch. Cab. Ano., 1874, p- 133, pl. xLu1, figs. 1, 2.—* B. H. Wricut, Check List, 1888. *Margaron (Anodonta) youkanensis LEA, Syn., 1870, p. 80. * Anodonta youkanensis P#TEL, Conch. Sam., ITI, 1890, p. 186. Kamtschatka; Alaska.’ + ANODONTA KENNERLYI Lea. * Anodonta kennerlyi LEA, Pr. Ac. Nat. Sci. Phila., IV, 1860, p. 306; *J1. Ac. Nat. Sci. Phila., V, 1862, p. 108, pl. xv1u1, fig. 256; *Obs., VIII, 1862, p. 112, pl. xvi, fig. 256.—* B. H. Wricut, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 181. * Anodon kennerlyi SOWERBY, Conch. Icon., XVII, 1870, pl. xxx1v, fig. 139. *Margaron (Anodonta) kennerlyi LEA, Syn., 1870, p. 79. Puget Sound; British Columbia. + ANODONTA OREGONENSIS Lea. “Anodonta oregonensis LEA, Tr. Am. Phil. Soc., VI, 1838, p. 80, pl. xx1, fig. 67; *Obs., II, 1838, p. 80, pl. x x1, fig. 67. _* TROSCHEL, Arch. fiir Nat., VI, 1839; II, p. 939,—* ConraD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 264,—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 503.--* CLessin, Conch. Cab. Ano., 1874, p. 170, pl. Lv1, figs. 5, 6.—* B. H. WriauT, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 182. * Margarita (Anodonta) oregonensis LEA, Syn., 1837, p. 30. * Anodon oregonensis CATLOW and REEVE, Conch. Nom., 1845, p. 67.—* GOULD and CARPENTER, Pr. Zool. Soc. Lond., 1856, p. 218.—*SowrErBy, Conch. Icon., XVII, 1867, pl. xvu, fig. 63. * Margaron (Anodonta) oregonensis LEA, Syn., 1852, p.49; 1870, p. 78. * Anodon cognate GOULD, Proc. Bost. Soc. Nat. Hist., ITI, 1850, p. 294. 1It is very hard to say ie this 18, aS it is ening a Wacencen eeu Probably a member of the Cygnea group. 2There can be no doubt but what this species occurs in Alaska and the northeast- ern part of Asia, from an examination of specimens in the U.S. National Museum collection from both regions. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 629 * Anodonta cognata GOULD, U. 8. Expl. Exp., XII, 1852, p. 435, figs. 546, 546a, 5460 ; Otia Conch., 1862, p. 187. —* ConRAD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 263.— * Hand A. ADAMS, Gen. Ree. Moll., II, 1857, p. 502.—*P TEL, Conch. Sam., III, 1890, p. 178. Washington; Oregon; North California; East to Great Salt Lake. ANODONTA CALIFORNIENSIS Lea. * Anodonta californiensis Lea, Tr. Am. Phil. Soc., X, 1852, p. 286, pl. xxv, fig. 47; *Obs., V, 1852, p. 42, pl. xxv, fig. 47.—* Conran, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 263.—* H. and A. Apams, Gen. Rec. Moll., I, 1857, p. 503.—* Mus- GRAVE, Phot. Conch., 1863, pl. 1, fig. 4.—* CLESsIN, Conch. Cab. Ano., 1874, p. 120, pl. xxxIXx, figs. 4,5.—* B. H. WRIGHT, Check List, 1888.—* PmTEL, Conch. Sam., III, 1890, p. 177. iar jaron (Anodonta) californiensis LEA, cone 1852, p.47; 1870, p. 75. * Anodon californiensis SowERBY, Conch. Icon., XVII, 1870, pl. xxvull, fig..113. Washington, south to California; east to Idaho and Arizona. Proba- bly a variety of the next. +ANODONTA NUTTALLIANA Lea. * Anodonta nuttalliana LEA, Tr. Am. Phil. Soc., VI, 1838, p. 77, pl. Xx, fig.62; *Obs., II, 1838, p. 77, pl. xx, fig. 62.—* TROSCHEL, Arch. fiir Nat., V, 1839, Pt. 2, p. 238.—* HANLEY, Test. Moll., 1842, p. 216; * Biv. Shells, 1843, p.216.—* Con- RAD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 264.—*H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p.503.—* CLessin, Conch. Cab. Ano., 1874, p. 147, pi. L, figs. i, 2.—* B. H. WriGHt, Check List, 1888.—* PTE, Conch. Sam., ITI, 190, p. 182. *Margarita (Anodonta) nuttalliana LEA, Syn., 1838, p. 29. *Margaron (Anodonta) nuttalliana LEA, Syu., 1852, p.47; 1870, p. 75. * Anodon nuttalliana CATLOW and REtveE, Conch. Nom., 1845, p. 67.—* GOULD and CARPENTER, Pr. Zool. Soc. Lond., 1856, p. 218. * Anodonta triangularis TRASK, Pr. Ac. Nat. Sci. Phila., I, 1855, p. 29. * Anodon triangularis, SOwERBY, Conch. Icon., XVII, 1870, pl. xx1X, fig. 56. Washington to California. + ANODONTA WAHLAMETENSIS Lea. * Anodonta wahlametensis LEA, Tr. Am. Phil. Soc., VI, 1838, p. 78, pl. xx, fig. 64; * Obs., II, 1838, p. 78, pl. Xx, fig. 64.—* TROSCHEL, Arch. fiir Nat., V, 1839, Pt, 2, p. 238.—* Hantey, Test. Moll., 1842, p. 215; Biv. Shells, 1843, p. 215, pl. xx1v, fig. 13.—“ConraD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 264.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p.503.—* CLEssin, Conch. Cab. Ano., 1874, p. 161, pl. LIU, figs. 7, 8.—* B. H. Wriaut, Check List, 1888.—* Pa&TEL, Conch. Sam., III, 1890, p. 186. * Margarita (Anodonta) wahlametensis LEA, Syn., 1838, p. 29. *Anodon wahlametensis CATLOW and REEVE, Conch. Nom., 1845, p. 68.—* GOULD and CARPENTER, Pr. Zool. Soc. Lond., 1856, p.218.—* SOWERBY, Conch. Icon., XVII, 1867, pl. 1x, fig. 22. *Margaron (Anodonta) wahlametensis LEA, Syn., 1852, p.47; 1870, p. 75. * Anodonta rotundata TRASK, Pr. Cal. Ac. Sci., I, 1855, p. 29. *Anodon rostratus SOWERBY, Conch. Icon., XVII, 1867, pl. 11, fig. 4 * Anodonta laosensis FISCHER,! Bull. Soc. H. N. Autun., 1891, p. 219. Washington; south to southern California; east to Utah. 1 Sowerby states that his species is from Lao, (Laos?) an error without doubt, as itis certainly A. wahlametensis. As the name rostrata had been used for an Anodonta by Kokeil (or Rossmassler) Fischer changed Sowerby’s name to laosensis. 630 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL XXIt. ANODONTA COARCTATA Anton. * Anodonta coarctata ANTON, Verz. der Conch., 1839, p. 16.—* TROSCHEL, Arck. fiir Nat., XI, 1845, Pt. 2, p. 323.—*KusTER, Conch. Cab. Ano., 1853, p. 34, pl. VII, fig. 2.—* B. H. WricntT, Check List, 1888.—* P&#TEL, Conch. Sam., III, 1890, p. 177.—* FISCHER and CRossE, Miss. Sci., Pt. 7, II, 1894, p. 519. "Anodonta chapalensis CROSSE and FISCHER, J. de Conch., XL, 1892, p. 295.— * FISCHER and CROSSE, Miss. Sci., Pt. 7, II, 1894, p. 518, pl. Lx1v, figs. 8-11. ake Chapala, State of Jalisco, Mexico. + ANODONTA EXILIOR Lea. * Anodonta exilior LEA, Pr. Ac. N. Sci. Phila., I, 1871, p. 188; *Jl. Ac. N. Sci. Phila., VIII, 1874, p. 24, pl. vu, fig. 21; *Obs., XIII, p. 28, pl. vu, fig, 21.— *B. H. Wricut, Check List, 1888.—* FISCHER and CRossk, Miss. Sci., Pt. 7, II, 1894, p. 520. * Anodonta chalcvensis CROSSE and FISCHER, JI. de Conch., XLI, 1893, p. 110.— * FISCHER and CROSSE, Miss. Sci., Pt. 7, II, 1894, p. 522, pl. Lx1v, figs. 7, 7a. Mexico, mostly in the Pacific drainage. (Group of Anodonta dejecta.) Shell rather solid, subtrapezoidal, narrower and rounded in front, where it is often considerably thickened, with a slight post-dorsal wing; beaks rather compressed, the sculpture consisting of numerous irregu- lar ridges which have a tendency to become doubly looped and nodu- lous; epidermis rather smooth and shining, greenish or ashy brown; nacre lurid, darker in the cavity of the beaks; muscle scars irregular, not well defined; dorsal scars few and rather deep. Animal with dark colored branchiz, the inner wider in front, nearly or quite free from the abdominal sac, the outer wrinkled on the outside into longitudinal and vertical folds, all four united to the mantle to the extreme posterior end; palpi very large; mantle with a wide, thick- ened double edge; branchial opening with numerous papille; anal opening smooth; superanal opening long, deep, united a long way below. + ANODONTA DEJECTA Lewis. *Anodonta dejecta Lewis, Field and Forest, I (August and September), 1875, p. 26;' * Yarrow’s Report, 1875, p. 952.—* B. H. WriacutT, Check List, 1888.— Simpson, Pr. U. 8. Nat. Mus., XIX, 1896, p. 372, pl. xxx, figs. 4, 5. *+t Anodonta mearnsiana SIMPSON, Nautilus, VI, 1893, p. 134. Arizona; southeastern California; northwest Mexico. (Group of Anodonta cataracta.) Shell thin or solid, inflated, rather evenly rounded in front, generally somewhat biangulate behind, and very slightly winged in the post- 1Said to be from Arkansas River or its tributaries west of the one hundredth meridian and collected by Dr. H. C. Yarrow, surgeon and naturalist of Wheeler’s expedition. This locality is erroneous, as it belongs, no doubt, exclusively to the Pacific drainage. NO. 1205. - SYNOPSIS OF THE NAIADES—SIMPSON. 631 dorsal region; beaks rather full, the sculpture consisting of a moderate number of concentric ridges or corrugations, which are generally some- what doubly looped, and often slightly nodulous; epidermis bright and shining, sometimes faintly rayed. Animal with large branchiz, the inner larger in front, free in part from the abdominal sac; marsupium occupying the entire outer gills, forming an enormously thick, liver-colored pad when filled; mantle thin, thickened on its edge; branchial papillz small; anal opening smooth. +ANODONTA CATARACTA Say.! Anodonta cataracta Say, Nich. Enc., 1st ed., II, 1816, pl. 11, fig. 4.—* ConrapD, New L. and F. W. Shells, 1834, p. 73.—* FERuUsSSAC, Guer. Mag., 1835, p. 25.— *~ DESHAYES, An. sans Vert., 2d ed., VI, 1835, p. 566; 3d ed., II, 1839, p. 678; Tr. Elem., I, 1853, Pt. 2, p. 218, pl. xxx, fig. 4.—* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 263.—* KusTER, Conch. Cab. Ano., 1853, p. 33, pl. vil, fig, 2.—* PHTEL, Conch. Sam., III, 1890, p. 177.—* H. CARPENTER, Nautilus, IV, 1890, p. 56. *Unio calaracta DESHAYES, Tr. Elem. Conch., 1839, p. 18, pl. xxx, fig. 1. *Anodon cataracta CATLOW and REEVE, Conch. Nom., 1845, p. 66. * Mytilus cataractus EATON, Zool. Text-Book, 1826, p. 224. *Anodon cataractus SOWERBY, Conch. Man., 1839, fig. 152; Conch. Icon., XVII, 1867, pl. 1x, fig. 25. *? Mytilus fluviatilis DILLWYN, Cat., I, 1817, p. 316.—* HANLEY, Ind. Test. Rev., 1856, p. 69. * Anodonta fluviatilis Bosc, Hist. Nat. Coq., 1824, III, p. 143.—* HANLEy, Test. Moll., 1842, p. 217.—*C. B. Apams, Thompson’s Hist. of Vt., 1842, p. 164; *F.W.and L.S. of Vt., 1842, p. 14.—*HANLEY, Biv. Shells, 1843, p. 217.— *STIMPSON, Shells of N. Eng., 1851, p.15.—*H. and A. ADAms, Gen. Rec. Moll., II, 1857, p.502.—* LATCHFORD, Tr. Ot. F. N. Club, 1882, p. 56.—* B. H. WRIGHT, Check List, 1888. *Margarita (Anodonta) fluviatilis LEA, Syn., 1836, p. 51; 1838, p. 30. *Anodon fluviatilis GOULD, Inv. Mass., 1841, p. 117, fig. 80.—*DE Kay, Zool. of N. Y., Pt. 5, 18438, p. 203, pl. xvii, fig. 234.—*CaTLow and REEVE, Conch. Nom., 1845, p. 66.—* HARTMAN and MICHENER, Conch. Cest, 1874, p. 94, fig. 192.—SOWERBY, Conch. Icon., XVII, 1869, pl. xxu1, fig. 86.—* BINNEY, Inv. of Mass., 2d ed., 1870, p. 178, fig. 480. *Margaron (Anodonta) fluviatilis LEA, Syn., 1852, p.50; 1870, p. 80. * Mytilus marginatus EATON, Zool. Text-Book, 1826, p. 224. * Anodonta dignota FERUSSAC, Guer. Mag., 1835, p. 25. * + Anodonta virguluta LEa,? Pr. Ac. N. Sci. Phila., I, 1857, p. 86; Jl. Ac. N. Sci. Phila., V, 1862, p. 213, pl. xxxuJ, fig. 282; *Obs., IX, 1863, p. 35, pl. xx x11, ‘fig. 282.—* CLEssin, Conch. Cab. Ano., 1874, p. 152, pl. XLIx, figs. 1,2.—* B. H. .WriGcat, Check List, 1888.—* P#TeL, Conch. Sam., III, 1890, p. 186. *Margaron (Anodonta) virgulata LEA, Syn., 1870, p. 80. 1 This species is probably better known by Dillwyn’s name, fluviatilis. According to Lea and Binney, the first edition of Nicholson’s Encyclopedia appeared in 1816, which would give Say’s name priority by one year. This edition is extremely rare, and I have never seen it. It is claimed by some authors to have been issued in 1817. Dillwyn refers his species to Gmelin, who states that his shell came from the fresh waters of Europe, and is allied to anatina, and it is quite likely it is A. cygnea. As there can be no doubt about Say’s species, I think it best to use his name. 21 think this is merely a southern form of cataracta and scarcely worthy of a varietal name. 632 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXL. *+ dnodonta williamsii Lra, Pr. Ac. N. Sci. Phila., VI, 1862, p.169; * Jl. Ac. N. Sci. Phila., VI, 1866, p. 27, pl. x, fig. 26; *Obs., XI, 1867, p. 31, pl. x, fig. 26.— * CLESSIN, Conch. Cab. Ano., 1874, p. 154, pl. 11, figs. 1, 2.—* B. H. WriGuHT, Check List, 1888.—* SowERBY, Conch. Icon., XVII, 1870, pl. xxvui, fig. 112. *Margaron (Anodonta) williamsii LEA, Syn., 1870, p. 81. *t Anodonta tryonit Lua, Pr. Ac. N. Sci. Phila., VI, 1862, p. 169; *Jl. Ac. N. Sci. Phila., VI, 1866, p. 28, pl. x, fig. 27; *Obs., XI, 1867, p. 32, pl. x, fig, 27.— * CLESSIN, Conch. Cab. Ano., 1874, p. 155, pl. 11, figs. 3,4.—* B. H. WRIGHT, Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p. 186. *Margaron (Anodonta) tryontit LEA, Syn., 1870, p. 80. *Anodon tryoniti HARTMAN and MICHENER, Conch. Cest., 1874, p. 95, fig. 195. Lower St. Lawrence drainage; streams draining into the Atlantic south to North Carolina. This species has been cited from Grand River, Michigan, and from north of Lake Superior. Mr. Bryant Walker states that the former locality is erroneous, and I presume that the latter is. +ANODONTA MARGINATA Say.! Anodonta marginata Say, Nich. Encye., II, 1816, pl. 101, fig. 5.—*C. B. ADAMS, Thompson’s Hist. Vt., 1842, p. 14.—* Stimpson, Shells of N. Eng., 1851, p. 15. * Anodonta marginatus HANLEY, Biv. Shells, 1843, p. 217. * Anodonta fragilis LAMARCK, An. sans. Vert., VI, 1819, p. 85.—* FERUSSAC, Guer. Mag., 1835, p. 25.—* DESHAYES, An. sans. Vert., 2d ed., VI, 1835, p. 566; 3ded., II, 1839, p. 678.—* DELESSERT, Rec. Coq. Lam., 1841, pl. x11, fig. 2, le, 2a, 2b.-— *HANLEY, Test. Moll., 1842, p.217; * Biv. Shells, 1848, p. 217.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 264.—* CLEssIN, Conch. Cab. Ano., 1854, p. 73, p]. XVII, figs. 3, 4.—* H. and A. ADAMS, Gen. Rec. Moll., I, 1857, p.502.—* CHENU, Til. Conch., 1858, pl. 111, figs. 4,4a.—* LATCHFORD, Tr. Ottawa F. N. Club, 1882, p. 56.—B. H. Wricut, Check List, 1888.—* P&TEL, Conch. Sam., III, 1890, 106 eG * Margarita (Anodonta) fragilis LEA, Syn., 1836, p. 50; 1838, p. 30. * Anodon fragilis CATLOW and REEVE, Conch. Nom., 1845, p. 67.—* SOWERBY, Conch. Icon., X VII, 1867, pl. xvu, fig. 61. * Margaron (Anodonta) fragilis LEA, Syn., 1852, p. 49; 1870, p. 78. *+t Anodonta lacustris LHa, Pr. Ac. N.Sci. Phila., I, 1857, p. 84; *Jl. Ac. N. Sci. Phila., 1860, p. 363, pl. Lx11, fig. 188; *Obs., VIII, 1860, p. 45, pl. Lx, fig. 188.—-* CLESSIN, Conch. Cab. Ano., 1873, p. 110, pl. Xx x11, figs. 5, 6.—* LaTcH- FORD, Tr. Ottawa F. N. Club, 1882, p.56.—* B. H. Wriacut, Check List, 1888.— * P&TEL, Conch. Sam., III, 1890, p. 181. * Anodon lacustris SOWERBY, Conch. Icon., XVII, 1867, pl. x1x, fig. 73. * Margaron (Anodonta) lacustris, LEA, Syn., 1870, p. 80. * Anodon flava ANTHONY, Am. J1. Conch., I, 1865, p. 160, pl. x1v, fig. 3. * Anodon flava B. H. WRIGHT, Check List, 1888. * Anodon pallida ANTHONY, Am. J1.Conch., I, 1865, p. 162, pl. xv, fig. 3. * Anodonia pallida, B. H. WRIGHT, Check ian 1888.—* Pa&TEL, Conch. Sam., IT 1890, p. 153. * Anodon pallidus SOwERBY, Conch. Icon., XVII, 1867, pl. x1, fig. 29. * Anodonta glandulosa ANTHONY, Am. Jl]. Gonene I, 1865, p. 163, pl. xvi, fig. 3.— * B. H. WRIGHT, Check List, 1888.—* P&TEL, Gone Sam., III, 1890, p. 180. 1T am very sure hae this=the 4. fragilis ‘Denna and not the vente Dire, as Dr. Lea believes. Say describes it as very thin and fragile; epidermis green olive, paler on the disk, and greener before (behind), within ier white, edged with whitish, and from his dimensions and figure it is a smaller shell than Dillwyw’s, the whole agreeing better with the fragilis of Lamarck. NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 633 *Anodon irisans ANTHONY, Am. Jl. Conch., I, 1865, p. 163, pl. xv1, fig. 2. * Anodonta irisans B. H. WRIGHT, Check List, 1888. * Anodonta irisans P&TEL, Conch. Sam., III, 1890, p. 180. * 2 Anodon hordeum SOWERBY, Conch. Icon., X VII, 1867, pl. x vin, fig. 66. *+ Anodonta subcarinata CURRIER, Am. J]. Conch., III, 1867, p. 113, pl. v1, fig. 5.— *B. H. WRIGHT, Check List, 1888.! * 2 Anodon subcylindracea SOWERBY, Conch. Icon., X VII, 1867, pl. xv, fig. ae * Anodon exvilis SOowERBY, Conch. Icon., XVII, 1869, pl. xx1I, fig. 84. * 2 Anodon pholadiformis SOwERBY, Conch. Icon., X VII, 1870, pl. xxv, fig. 106. St. Lawrence River drainage. ANODONTA TERES Conrad. “Anodonta teres CONRAD, New F.W. Shells, 1834, p. 47, pl. vu, fig. 2.2—* FeRussac Guerin. Mag., 1835, p. 25.—* MOLLER, Syn. Nov. Gen., 1836, p. 194.—* CHENU, Bib. Conch., Ist ser., III, 1845, p. 25, pl. 0, fig. 9,.—* CE, Pr. Ac. N. Sci. Phila., VI, 1853, p. 264, Santee Canal, South Carolina. +ANODONTA IMPLICATA Say. Anodonta implicata Say, New Harm. Diss., II, No. 22, 1829, p. 340.—* Conrab, New F. W. Shells, 1834, p. 73.— FERUSSAC, ‘Guan. Mag., 1835, p. 250.—* Say, New L. and F. W. Shells, 1840, p. 10.—* L. W. Say, Terr. and Fluv. Shells, 1840, p. 11.—StTIMpPsoN, Shellsof N. Eng., 1851, p. 15.—* CONRAD, Pr. Ac. N. Sei. Phila., VI, 1853, p. 264.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 502.—* CLEs- SIN, Conch. Cab. Ano., 1873, p. 78, pl. X1x, fig. 3.—* LaTCHFORD, Tr. Ottawa F. N. Club, 1882, p. 56.—* B. H. WrieuT, Check List, 1888.—* H. CARPENTER, Nautilus, IV, 1890, p. 57. * Anodon implicata GOULD, Inv. Mass., 1841, p. 118, fig. 78; 2d ed., 1870, p. 180, fig. 481.—* Dr Kay, Zool. of N. Y., Pt. 5, 1843, p. 202.—* HARTMAN and MICH- ENER, Conch. Cest., 1874, p. 94, fig. 193. *Marqaron (Anodonta) implicata LEA, Syn., 1852, p.50; 1870, p. 80. * 2 Anodon implicatus SOWERBY, Conch. Icon., X VII, 1867, pl. x111, fig. 44.° *+ Anodonta newtonensis Lra, Tr. Am. Phil. Soc., VI, 1838, p. 79, pl. xx1, fig 66; ~ * Obs., II, 1838, p. 79, pl. x x1, fig. 66.—* HANLEY, Test. Moll., 1842, p. 219. * Margarita (Anodonta) newtonensis LRA, Syn., 1838, p. 30. * Anodon newtonensis SOWERBY, Conch. Icon., X VII, 1867, pl. xvu, fig. 62. * Anodonta newtoniensis TROSCHEL, Arch. fiir. Naturg., V, 1839, p. 239.—* ParE., Conch. Sam., III, 1890, p. 182. * Anodon newtoniana CATLOW and REEVE, Conch. Nom., 1845, p. 67. *? Anodon excurvata DE Kay,* Zool. of N. Y., Moll., Pt.5, 1843, p. 202, pl. xvii, fig. 233.—CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 264.—* B. H. Wriaut, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 179. 1The type of this is in Mr. Bryant Walker’s collection, and seems to be a variety of marginata. 2It is hard to say where this belongs, or what it is. The figure shows it a dirty yellowish, without rays, and shaped something like 4. fragilis, while the description is too brief to properly characterize it. ’This may be 4. grandis Say. 4T am not certain whether this is the implicata of Say or his cataracta. De Kay states that the shell is thin and fragile, and the figure shows it to be brown, green, and yellowish, in irregular bands, and apparently shining and smooth like cataracta. He says that it is nearest to implicata. 634 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. Xxu. *Anodonta housatonica LINSLEY, Am. Jl. Sci., 1845, p. 277.—* Stimpson, Shells of N. Eng., 1851, p. 15.—* H. and A. ADAmMs, Gen. Rec. Moll., II, 1857, p. 502.— * PEHTEL, Conch. Sam., ITI, 1890, p. 180. St. Lawrence drainage; north to Lake Winnipeg; south in streams flowing into the Atlantic to Virginia; not reported from Michigan. t+ ANODONTA HALLENBECKII Lea. *Anodonta hallenbeckit Lea, Pr. Ac. N. Sci. Phila., II, 1858, p. 189; *Jl. Ac. N. Sci. Phila., IV, 1859, p. 232, pl. xxxu, fig. 112; *Obs., VII, 1859, p. 50, pl Xxxul, fig. 112.—* CLessrn, Conch. Cab. Ano., 1873, p. 95, pl. xxvii, figs. 3, 4.—* B. H. WrIGuHT, Check List, 1888.—* P#TEL. Conch. Sam., III, 1890, p. 180.—* SOWERBY, Conch. Icon., XVII, 1869, pl. xx111, fig. 89, 483. * Margaron (Anodonta) hallenbeckii ‘LARA Syn., 1870, p. 78. *+t Anodonta gesnerit LEA, Pr. Ac. N. Sci. Phila., X, 1858, p.139; *Jl. Ac. N. Sci. Phila., IV, 1859, p. 231, pl. xxx, fig. 109.—* Obs., VII, 1859, p. 49, pl. xxx1, fig. 109.—* CLESSIN, Conch. Cab. Ano., 1873, p. 95, pl. xxvi, figs. 1, 2.— *B. H. Wricut, Check List, 1888. *Anodon gesnerit SOWERBY, Conch. Icon., X VII, 1867, pl. vu, fig. 15. *Margaron (Anodonta) gesnerii LEA, Syn., 1870, p. 78. * Anodonta gessneri P#TEL, Conch. Sam., III, 1890, p.179.' Georgia. tANODONTA DOLIARIS Lea.’ * Anodonta dolearis L¥a, Pr. Ac. N. Sci. Phila., VII, 1863, p. 193. * Anodonta doliaris L¥a, Jl. Ac. N. Sci. Phila., VI, 1866, p. 24, pl. vim, fig. 23; *Obs., XI, 1867, p. 28, pl. vin, fig. 23.—* CLEssINn, Conch. Cab. Ano., 1874, p. 130, pl. XLII, figs. 1, 2.—* B. H. Wrieut, Check List, 1888. *Margaron (Anodonta) doliaris L¥a, Syn., 1870, p. 81. North Carolina. + ANODONTA DARIENSIS Lea. *Anodonta dariensis LEA, Pr. Ac. N. Sci. Phila., II, 1858, p. 189; * Jl. Ac. N. Sci. Phila., IV, 1859, p. 230, pl. xxviut, tig. 99; *Obs., VII, 1859, p. 48, pl. xx vi1uI, fig. 99.—* CLESsIN, Conch. Cab. Ano., 1874, p. 118, pl. xxxvu, figs. 3, 4.— *B. H.WriGuHT, Check List, 1888.—* Pa:TEL, Conch. Sam., III, 1890, p. 178. *Anodon dariensis SOwERBY, Conch. Icon., XVII, 1867, pl. x v1, fig. 70. *Margaron (Anodonta) dariensis LEA, Syn., 1870, p. 80. Georgia; north Florida. Group of Anodonta imbecillis. Shell thin, elliptical, sometimes slightly produced near the center of the base, pointed behind, with a slight posterior dorsal wing; area of the beaks generally flattened though often full; beak sculpture con- sisting of several rather delicate, irregular ridges which show a tend- ency to break into nodules; epidermis brightand smooth, usually marked 1The type of A. hallenbeckii is a suleate shell, somewhat constricted at the central base, while that of A. gesneri is not constricted and is smoother. The former may be slightly diseased, and the museum series of shells appears to absolutely connect the two. 2 First spelled dolearis by Lea, and afterwards changed by him to doliaris. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 635 with beautiful, delicate, capillary rays; nacre bluish. Animal some- times highly colored; gills nearly alike in size, often having a distinct - border of different texture; eye-spots on branchial opening generally perceptible. tANODONTA IMBECILLIS Say. Anodonta imbecillis Say, N. Harm. Diss., II, No. 23, 1829, p. 355.—* Conrap, New F. W. Shells, 1834, p. 73.—* FERUSSAC, Guer. Mag., 1835, p. 25.»—* L. Say, Terr. and Fluv. Shells, 1840, p. 13.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 264.—* H. and A. ApDAMs, Gen. Rec. Moll., II, 1857, p. 502.—* Ca.kins, Pr. Dav. Ac. Sci., 1874, p. 47.—* CLEssin, Conch. Cab. Ano., 1874, p. 70, pl. xLrx, figs.4,5; xxv, fig. 4.—* B. H. WricutT, Check List, 1888.—* PatTEL, Conch. Sam., III, 1890, p. 180.—* Stearns, Pr. U.S. Nat. Mus., XIV, 1891, p. 106.— * BAKER, Moll. Chicago, Pt. 1, 1898, p. 55, pl. v, fig. 1. ; * Margaron (Anodonta) imbecillis LEA, Syn., 1852, p. 50; 1870, p. 80. * Anodon imbecillis SOwERBY, Conch. Icon., XVII, 1870, pl. xxvit, fig. 102. * +t Anodonta incerta LEA, Tr. Am. Phil. Soc., V, 1834, p. 46, pl. v1, fig. 16; * Obs., I, 1834, p. 158, pl. v1, fig. 16.—* FERussac, Guer. Mag., 1835, p. 25.—* HANLEY, Test. Moll., 1842, p. 218.—* PamTeL, Conch. Sam., III, 1890, p. 180. * Margarita (Anodonta) incerta LEA, Syn., 1836, p. 51; 1838, p. 30. *Anodon incerta CATLOW and REEVE, Conch. Nom., 1845, p. 67. *Anodon incertus SOwERBY, Conch. Icon., XVII, 1867, pl. xvuy, fig. 59. *Anodon hord« GOULD, Pr. Bost. Soc. N. H., V, 1855, p. 229; * Otia Conch., 1862, p. 218. * Anodonta hordeum PTEL, Conch. Sam., III, 1890, p. 180. Entire Mississippi drainage area; south Michigan; North Carolina to Georgia; southwest to Matamoras, Mexico. tANODONTA HENRYANA Lea.! “Anodonta henryana Lea, Pr. Ac. N. Sci. Phila., I, 1857, p. 102; * Jl. Ac. N. Sei. Phila., IV, 1860, p. 373, pl. Lxv1, fig. 198; * Obs., VIII, 1860, p. 55, pl. LXV1, fig. 198.—* CLEssin, Conch. Cab. Ano., 1874, p. 141, pl. xLv, figs. 5, 6.—* B. H. WRIGHT, Check List, 1888.—* P&#TEL, Conch. Sam., III, 1890, p. 180.— * FISCHER and CRossE, Miss. Sci., Pt. 7, II, 1894, p. 525. * Margaron (Anodonta) henryana LEA, Syn., 1870, p. 81. *Anodon henryana SOWERBY, Conch. Icon.,X VII, 1870, pl. xxx1v, fig. 140.2 Northeast Mexico; southern Texas. tANODONTA GIBBOSA Say.’ Anodonta g:bbosa Say, Exp. to St. Peters R., 1824, p. 265, pl. xiv, figs. 3, 4.— * FERUSSAC, Guer. Mag., 1835, p. 25; * CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 264.—* H. and A. ApDAms, Gen. Rec. Moll., II, 1857, p. 502.—* CLEssIn, Conch. Cab. Ano., 1873, p. 74, pl. xviul, fig. 3.—* B. H. Wricut, Check List, 1888.—* Pe TEL, Conch. Sam., III, 1890, p. 179. 'Typically very distinct from imbecillis, having the dorsal and basal lines quite straight. But there are many intermediate forins which are very hard to place, and it is probably only a variety of the latter. 2Anodonta impura Say, (Disseminator, 1829, p. 355) from Mexico has never been figured and was only briefly described. It is quite likely that it is the same as 4. henryana. , 3An exceedingly variable species in form, size, and solidity. 4. dunlapiana seems to me to be only a slightly elongated, rather solid form. 636 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL. XM. * Margarita (Anodonta) gibbosa LEA, Syn., 1838, p. 31. *Anodon gibbosa CATLOW and REEVE, Conch. Nom., 1845, p. 67. *Margaron (Anodonta) gibbosa LEA, Syn., 1852, p.51; 1870, p. 81. *Anodon gibbosus SOWERBY, Conch. Icon., XVII, 1867, pl. 1x, fig. 23. “+ Anodonta cowperiana Lna, Pr. Am. Phil. Soc., I, 1840, p. 289. * Anodonta couperiana LEA, Tr. Am. Phil. Soc., VIII, 1842, p. 227, pl. xx, fig. 146; - *Obs., If], 1842, p. 65, pl. xx, fig. 46.—* ConrapD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 263.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 502.—* CLEss1n, Conch. Cab. Ano., 1874, p. 148, pl. L, figs. 3, 4.—* B. H. WricuT, Check List, 1888.—* Simpson, Pr. U.S. Nat. Mus., XV, 1892, p. 433, pl. LX xrv, fig. 1. *Margaron (Anodonta) couperiana LEA, Syn., 1852, p.51; 1879, p. 81. * Anodonta .cooperiana P&TEL, Conch. Sam., III, 1890, p. 178. + ANODONTA GIBBOSA var. DUNLAPIANA Lea. *t Anodonta dunlapiana LEA, Pr. Am. Phil. Soc., II, 1842, p. 225; * Tr. Am. Phil. Soc., VIII, 1842, p. 248, pl. xxv, fig. 65; * Obs., IIT, 1842, p. 86, pl. xxvu, fig. 65.— * SowERBY, Conch. Icon., XVII, 1869, pl. xx11, fig. 87.—* CLEssIN, Conch. Cab. Ano., 1876, p. 220, pl. Lxxrv, figs. 1, 2.—* B. H. Wriacut, Check List, 1888.—* P&TeL, Conch. Sam., III, 1890, p. 179. South Carolina to Florida. (Group of Anodonta suborbiculata.) Shell large, compressed, suborbicular, somewhat produced near the center of the base, rounded in front and bluntly pointed behind, with a slight posterior dorsal wing; beaks flattened, the sculpture consisting of a few irregular ridges, which are generally broken into nodules, sometimes only corrugated; a well-defined but low posterior ridge sepa- rates the smooth, shining area in front from a darker and rougher one behind; epidermis with numerous delicate, capillary rays near the beaks; muscle scars very large; nacre rather coppery and iridescent; palleal line broken, often marked with radiating ridges. Animal unknown. ' +; ANODONTA SUBORBICULATA Say. Anodonta suborbiculata Say, New Harm. Disseminator (newspaper form), January 29, 1831; Am. Conch. I, No. II, 1831, pl. x1.—* Conrab, New F. W. Shells, 1834, p. 73.—*FERUsSAC, Guer. Mag., 1835, p. 25.—* HaNLEYy, Test. Moll., 1842, p. 222; Biv. Shells, 1843, p. 222.—* CHENU, Bib. Conch., 1st ser., III, 1845, p. 18, pl. 10, figs. 1, la.—* ConraD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 264.—* H. and A. Apams, Gen. Rec. Moll, I, 1857, p. 503.—* CLESSIN, Conch, Cab. Ano., 1874, p. 160, pl. Li, figs. 1, 2.—* B. H. Wrient, Check List, 1888.— *PmTEL, Conch. Sam., III, 1890, p. 185. -* Margarita (Anodonta) suborbiculata Say, Syn., 1836, p.52; 1838, p. 31. * Anodon suborbiculata CATLOW and REEVE, Conch. Nom., 1845, p. 68. *Margaron (Anodonta) suborbiculata Say, Syn., 1852, p.51; 1870, p. 81. * 4nodon suborbiculatus SOWERBY, Conch. Icon., XVII, 1867, pl. v, fig. 11. Nebraska, Iowa; Illinois; south to Louisiana. Abundant locally. ' Closely related to the imbecillis group, but differing in form, beak sculpture, the large muscle scars, and the palleal line. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 637 (Group of Anodonta woodiana.)' Shell oval, inflated, sometimes narrowed in front, pointed behind, and often a little produced at the posterior base, slightly winged in the post-dorsal region; beaks full, sculptured with numerous strong con- centric ridges, which are either straight in the center of the disk or slightly doubly looped. There is often a faint posterior ridge, which may be double, making the shell feebly biangulate behind; dorsal scars one or two under the beaks; muscle scars irregular. Animal with the gills large, equal in size, rounded below, free the greater part of their length from the abdominal sac, somewhat wrinkled; marsupium occupying the entire outer gills, forming thick brown pads when filled; palpi large, subelliptical, free from the mantle a long way; mantle having a wide, thickened edge; branchial opening crowded with dark papilla; anal opening with no papille, but having purple ridgesinside; superanal opening closed nearly its whole length.’ t ANODONTA WOODIANA Lea. *Symphynota woodiana LEA, Tr. Am. Phil. Soc., V, 1834, p. 42, pl. v, fig. 13; *Obs., I, 1834, p. 154, pl. v, fig. 13. *Margarita (Anodonta) woodiana LEA, Syn., 1836, p. 48; 1838, p. 29. *Anodon woodiana CATLOW and REEVE, Conch. Nom., 1845, p. 68.—*SowErRBy, Conch. Icon., XVII, 1870, pl. xxxv1, fig. 149. *Anodonta woodiana HANLEY, Test. Moll., 1842, p. 215; * Biv. Shells, 1843, p. 215.— *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 503.—* CLessin, Conch. Cab. Ano., 1875, p. 146, pl. xvii, figs. 1, 2. *Margaron ( Anodonta) woodiana LEA, Syn., 1852, p. 47; 1870, p. 75. tSymphynota magnifica Lra,? Tr. Am. Phil. Soc., V, 1834, p. 42, pl. v, fig. 14; Obs., I, 1834, p. 155, pl. v, fig 14. * Margarita (Anodonta) magnifica LEA, Syn., 1836, p. 485; 1838, p. 29. *Anodonta magnifica HANLEY, Test. Moll., 1842, p. 215; Biv. Shells, 1843, p. 215.— *H. and A. ADAMS, Gen. Rec. Moll, II, 1857, p. 503.—* CHENU, Man., 1859, IT, p. 146, fig. 719.—* SCHRENCK, Reis and F. Am. Lande., II, 1867, p. 718, pl. xxvin, figs. 1, 2.—* P&TEL, Conch. Sam., III, 1890, p. 181. *Anodon magnifica CATLOW and REEVE, Conch. Nom., 1845, p. 67.—SoWERBY, Conch. Icon., XVII, 1870, pl. xxv, fig. 96. *Margaron (Anodonta) magnifica LEA, Syn., 1852, p.47; 1870, p. 75. *? Anodonta aurata KUSTER, Conch. Cab. Ano., 1853, p. 30, pl. v1, fig. 2. 1 Fischer has made a subgenus Pteranodon (Man. Conch., p. 1003) for A. magnifica, but I do not see any need of giving it and the related species any higher rank than that of a group. The shell and animal differ but little from those of other Anodontas.__ . 2A group closely agreeing in general characters, but having enormous individual variation. Pere Heude has bestowed specific names on a great number of forms, most of which are, I think, merely mutations of Lea’s woodiana. Fortunately the U. 8. National Museum possesses in the Morelet collection a large series of author’s specimens, and the excellent figures in the Conchyliologie Fluviatile Nanking enable me to straighten out this difficult group to some extent. 3 Larger and rather more finely developed than A. woodiana, but the large series of material J have examined absolutely connects the two. 638 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. *? 4nodon rotundatus SWAINSON, Ex. Conch., 2d ed., 1841, pl. xxxvu1. *Anodon gibbum BENSON, JI. Asiat. Soc., XXIV, 1855, p. 135. *Anodon gibba SOWERBY, Conch. Icon., X VII, 1867, pl. v1, fig. 13.—HEUDE, Conch. Fl. Nank., VII, 1881, pl. 1, fig. 95. *Margaron (Anodonta) gibba Lea, Syn., 1870, p. 81.—*von MARTENS, Nov. Conch., IV, 1876, p. 159, pl. cx xx VI, figs. 6, 7. * Anodonta gibba CLESSIN, Conch. Cab. Ano., 1875, p. 181, pl. Lx, fig. 4.—* P&TEL, Conch. Sam., III, 1890, p. 179. * Anodon tricostatus SOWERBY, Conch. Icon., X VII, 1870, pl. xxv, fig. 98.—* Paria, Conch. Sam., III, 1890, p. 186. * Anodonta edulis HEUDE, J. de Conch., XXII, 1874, p. 117. *Anodon edulis HEUDE, Conch. F. Nank., I, 1875, pl. vii, fig. 18. * Anodonta edulis PATEL, Conch. Sam., III, 1890, p. 179: *t Anodon securiformis HEUDE, Conch. F. Nank., III, 1877, pl. xvii, fig. 39. * Anodonta securiformis Pa&TEL, Conch. Sam., III, 1890, p. 167. *tAnodon nigricans HEUDE, Conch. F. Nank., III, 1877, pl. x1x, fig. 41. * Anodonta nigricans PATEL, Conch. Sam., III, 1890, p. 182. *tdnodon piscatorum HEUDE, Conch. F. Nank., IV, 1878, pl. xxv1, fig. 56. * Anodon elliptica HEUDE, C.F. Nank., IV, 1878, pl. xxvul, fig. 58. *tAnodon fusca HEUDE, C.F. Nank., IV, 1878, pl. xxvul, fig. 59. *Anodon friniana HEUDE, C.F. Nank., IV, 1878, pl. xxvii, fig. 60. *Anodon joretti HEUDE, C.F. Nank., IV, 1878, pl. xxix, fig. 62. *tAnodon striata HEUDE, C. F. Nank., IV, 1878, pl. xxx, fig. 63. * Anodonta striata P&TEL, Conch. Sam., III, 1890, p. 185. *tAnodon pacifica HEUDE, C. F. Nank., IV, 1878, pl. xxx11, fig. 66. *+ Anodon tumida HEUDE, C.F. Nank., V, 1879, pl. xxxv, fig. 69. * Anodonta tumida P#TEL, Conch. Sam., III, 1890, p. 186. * Anodon subtetragona HEUDE, C.F. Nank., V, 1879, pl. xxxv1, fig. 70. *Anodon lineata HEUDE, C. F. Nank., V, 1879, pl. xxxv1, fig. 71. * Anodonta lineata PHTEL, Conch. Sam., III, 1890, p. 181. * Anodon irregularis HEUDE, C.F. Nank., V, 1879, pl. xxxvul, fig. 73. * Anodonta irregularis P&TEL, Conch. Sam., III, 1890, p. 180. * Anodon melanochlorea HEUDE, C. F. Nank., V, 1879, pl. xxxvuil, fig. 74. * Anodonta melanochlorea PZTEL, Conch. Sam., III, 1890, p. 182. *tAnodon agricolarum HEUDE, C. F. Nank., V, 1879, pl. XxxIx, fig. 75. * Anodonta agricolarum PATEL, Conch. Sam., III, 1890, p. 176. *tAnodon mingorum HEUDE, C. F. Nank., V, 1879, pl. x1, fig. 77. *Anodonia mingorum PTEL, C. Sam., ITI, 1890, p. 182. *Anodon bigibba HEUDE, C.F. Nank., VI, 1880, pl. XL, fig. 78. * Anodonta bigibba PATEL, C. Sam., III, 1890, p. 177. *Anodon despecta Hruvk, C.F. Nank., V, 1880, pl. x, fig. 79. *Anodon obtusa HEUDE, C. F. Nank., VI, 1880, pl. xLu, fig. 80. *Anodon navicella HEUDE, C. F. Nank., VI, 1880, pl. x tI, fig. 81. * Anodonta navicula P&TEL, C. Sam., ITI, 1890, p. 182. *Anodon orbicularis HEUDE, C. F. Nank., VI, 1880, pl. XLII, fig. 82. * dnodonta orbicularis PATEL, C. Sam., III, 1890, p. 182. *Anodon limosa HEUDE, C. F. Nank., VI, 1880, pl. xL111, fig. 83. * {nodonta limosa PATEL, C. Sam., III, 1890, p. 181. *Anodon livida HEUDE, C. F. Nank., VI, 1880, pl. x11, fig. 84. * Anodonta livida P&TEL, C. Sam., III, 1890, p. 181. * 4nodon castanea HEUDE, C. F. Nank., VI, 1880, pl. xxi, fig. 85. * Anodonta castanea P&TEL, C. Sam., IIT, 1890, p. 177. *Anodon minuta HEUDE, C.F. Nank., VI, 1880, pl. XLtv, fig. 86. *Anodonta minuta PATEL, C. Sam., III, 1890, p. 182. *+tAnodon succinea HEUDE, C. F. Nank., VI, 1880, pl. xL1Vv, fig. 87. *Anodonta succinea PHTEL, C. Sam., III, 1890, p. 185. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 639 *+4nodon chiniana HEuDE, C.F. Nank., VI, 1880, pl. xLv, fig. 88. * Anodonta chiniana P&TEL, C. Sam., ITI, 1890, p. 177. * Anodonta scaphydium HEUDE, C. F. Nank., VI, 1880, pl. xXLv1, fig. 89. * Anodonta scaphidium PXTEL, C.Sam., III, 1890, p. 184. *+4dnodon puerorum HEUDE, C. F. Nank., VII, 1880, pl. xLvu, fig. 90. *dnodonta puerorum PXTEL, C. Sam., III, 1890, p. 183. * Anodon indecora HEupDF, C. F. Nank., VI, 1880, pl. XLvill, fig. 91. * Anodonta indecora PXTEL, C. Sam., ITI, 1890, p. 180. *Anodon sorini HEUDE, C. F. Nank., VII, 1881, pl. xix, fig. 92. * Anodonta sorint PHTEL, C. Sam., III, 1890, p 185. *Anodon rosea HEUDE, C. F. Nank., VII, 1881, pl. 1, fig. 93. * 4nodonta rosea PETEL, C. Sam., III, 1890, p. 124. * Anodon aubreyi HEUDE, C. F. Nank., VII, 1881, pl. Lu, fig. 97. * Anodonta aubreyt PATEL, C. Sam.. ILI, 1890, p. 176. * 4{nodon confusa HEUDE, C. F. Nank., VII, 1881, pl. Liu, fig. 99. * Anodonta confusa P&TEL, C. Sam., III, 1890, p. 178. *Anodon obtusata HEUDE, C. F. Nank., VII, 1881, pl. trv, fig. 100. *Anodon rubella HEUDR, C.F. Nank., VII, 1881, pl. Liv, fig. 160 bis. *Andonta rubella PHTEL, C. Sam., ITI, 1890, p. 184. *Anodon pulchella HEUDE, C. F. Nank., VII, 1881, pl. Lv, fig. 101. * Anodonta pulchella P& TEL, C. Sam., III. 1890, p. 183. *+Anodon florida HEUDE, C.F. Nank., VII, 1881, pl. Lv, fig. 102. * Anodonta florida PHTEL, C. Sam., II, 1890, p. 179. * Anodonta retusa HEUD*,! J. de Conch., XXXII, 1884, p. 20.—PaTKEL, Conch. Sam., III, 1890, p. 184. * dnodon intermerata HEUDE, C. F. Nank., IX, 1885, pl. Lx vil, fig. 130. * Anodonta intermerata Pa TEL, C. Sam., III, 1890, p. 180. *Anodon filippiana HEUDE, C. F. Nank., IX, 1885, p]. Lx vu, fig. 131. * Anodonta filippiana P&TEL, C. Sam., IIT, 1890, p. 183. * Anodon fantozatiana HEUDE, C. F. Nank , IX, pl. LxIx, fig. 132. * Anodonta fantozatiana PATEL, C. Sam., III, 1890, p. 179. China; Cambodia; Siam; Amoor River? + ANODONTA FENOUILII Heude. *Anodon fenouiliti HEUDE, C. F. Nank., IV, 1878, pl. x x x1, fig. 64. China. ANODONTA JOURDYI Morlet. * Anodonta jourdyi MORLET, Jl. de Conch., XXXIV, 1886, pp. 76, 288, pl. xv, figs. 1, la.—* P&TEL, C. Sam., III, 1890, p. 180. Tonkin. + ANODONTA LAUTA von Martens. * Anodonta lauta VON MARTENS, S. B. Nat. Fr., 1877, p. 117; Abh. Senck. Nat. Ges., X, 1877, p. 152, fig. 1.—* KoBELT, Abh. Senck. Nat. Ges., XI, 1879, p. 434, pl. xxI, fig. 1; xxuJ, fig. 1 (var. rostrata).—* PmTEL, C. Sam., III, 1890, p. 191.— * VON JHERING, Abh. Senck. Nat. Ges., X VIII, 1893, p. 150. *Anodonta woodiana KOBELT,? Abh. Senck. Nat. Ges., XI, 1879, p. 433, pl. xx, fig. 1.—von IHERING, Abh. Senck. Nat. Ges., X VIII, 1893, p. 151. Japan. ! New name for 4. obtusa preoccupied. 2 This differs from 4. woodiana of Lea, which I think has not been found in Japan. I think this is a form of lauta. 640 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL t ANODONTA JAPONICA von Martens. * Anodonta japonica VON MARTENS in Clessin, Conch. Cab. Ano., 1874, p. 144, pl. XLVU, figs. 3,4.—*KOBELT, Abh. Senck. Nat. Ges., XI, 1879, p. 436, pl. xx11, fig. 3.—* Pre, Conch. Sam., III, 1890, p. 180.—* von IHERING, Abh. Senck. Nat. Ges., XVIII, 1893, p. 150, fig. 2. * Anodonta cellensis KOBELT, Abh. Senck. Nat. Ges., XI, 1879, p. 437, pl. xxu, fig. 4. * Anodonta kobelti VON IHERING, Abh. Senck. Nat. Ges., X VIII, 1893, p. 152, fig. 1. * Anondonta haconensis VON IHERING, Abh. Senck. Nat. Ges., XVIII, 1893, p. 161, fig. 3. Japan. ANODONTA LUCIDA Heude. *Anodon lucida Heup#, C.F. Nank., III, 1877, pl. xx, fig. 43. China. + ANODONTA RIVULARIS Heude. *Anodon rivularis HEuDE, C.F. Nank., III, 1877, pl. xx, fig. 44. * Anodonta rivularis PHTEL, C.Sam., III, 1890, p. 184. China. +t ANODONTA HARLANDI Baird and Adams. * Anodonta harlandi BAIRD and ADAMS, Pr. Zool. Soc. Lond., 1867, p. 492, pl. XXvVI, figs. 3, 3a.—* P#TEL, C.Sam., III, 1890, p. 180. *dAnodon harlandi HEUDE, C.F. Nank., IV, 1878, pl. xxv, fig. 55. China. ANODONTA GLOBOSULA Heude. *Anodon globosula HEUDE, C.F. Nank., IV, 1878, pl. xxv, fig. 54. China. t ANODONTA EUSCAPHYS Heude. *Anodon euscaphys HEUDE, C. F. Nank., V, 1879, pl. xxxv, fig. 68. * Anodonta euscaphys HEUDE, C. Sam., III, 1890, p. 179. China. ANODONTA FLUMINEA Heude. *Anodon fluminea HEUDE, C. F. Nank., III, 1877, pl. xx, fig 42. * Anodon torrentis HKuDE, C. F. Nank., IV, 1878, pl. xxx, fig. 61. * Anodonta fluminea PHTEL, C. Sam., III, 1890, p. 179. China. ANODONTA PUMILA Heude. *Anodon pumila HEUDE, C. F. Nank., V, 1879, pl. xxxvul, fig. 72. *Anodonta pumila P&TEL, C. Sam., III, 1890, p. 183. China. ANODONTA DOLIOLUM Heude. * Anodon doliolum HEUDE, C. F. Nank. IV, 1878., pl. xxvu, fig. 57. China. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 641 ANODONTA CALIPYGOS Kobelt. *Anodonta calipygos KOBELT, Abh. Senck. Nat. Ges., XI, 1879, p. 435, pl. x1x, fig. 1.—* P&TEL, C. Sam., III, 1890, p. 177.—* von IWERING, Abh. Senck. Nat. Ges., XVIII, 1893, p. 150. Japan. ANODONTA UNDULIFERA Clessin. “Anodonta undulifera CLESSIN, Conch. Cab. Ano., 1876, p. 233, pl. LXXVI, figs. 1, 2. China. (Group of Anodonta arceformis.) Shell elliptical, with the dorsal and ventral lines parallel, greatly inflated, rounded in front, pointed and having a slight dorsal wing behind; umbonal region full, but the beaks flattened; the sculpture, consisting of numerous ridges, curved in front and nearly following the growth lines, then running backward in an almost straight line and ending at the low posterior ridge. Animal unknown. tANODONTA ARCZZFORMIS Heude. *Anodon arceformis HEUDE, C.F. Nank., III, 1877, pl. x1x, fig. 40. “Anodonta arceformis PATEL, C. Sam., III, 1890, p. 176. China. (Group of Anodonta grandis.) Shell oval, inflated, with a slight post-dorsal wing; umbonal region inflated; beak sculpture consisting of several coarse, irregular, often broken ridges, which are more or less doubly looped and generally nodulous, especially at the bases of the loops; epidermis usually rather smooth. Animal with large gills, inner the larger, especially in front, free nearly or quite the entire length of the abdominal sac; palpi large and long; mantle much thickened at the border. +ANODONTA GRANDIS Say.! Anodonta grandis Say, N. Harm. Diss., II, 1829, p. 341.—* Conrap, New F. W. Shells, 1834, p. 73.—* FERussAC, Guer. Mag., 1835, p. 25.—* L. W. Say, Terr. and Fluv. Shells, 1840, p. 12.—* HANLEy, Test. Moll., 1842, p. 220; * Biv. Shells, 1843, p. 220.—* Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 264.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 502.—* CLEss1n, Conch. Cab. Ano., 1873, p. 96, pl. xxx, figs. 1,2 —* B. H. Wriaut, Check List, 1888.—* Part, Conch. Sam., III, 1890, p. 180.—* Bakr, Moll. Chicago, Pt. 1, 1898, p. 51, pls. 1, 11, fig. 1; Iv, fig. 1. 1A species having a very wide distribution and abundant in individuals. It is an exceedingly variable form, and a large number of names have been bestowed on its mutations, all of which seem to be closely connected. I have retained some of these in a varietal sense. Proc. N. M. vol. xxii——41 642 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XX. * Margarita (Anodonta) grandis LEA, Syn., 1836, p. 52; 1838, p. 31. *Anodon grandis CaTLOW and REEVE, Conch. Nom., 1845, p. 67.—* SowERBy, Conch. Icon., XVII, 1870, pl. 1, fig. 1. *Margaron (Anodonta) grandis LEA, Syn., 1852, p. 51; 1870, p. 81. *t Anodonta ovata LeA,! Tr. Am. Phil. Soc., VI, 1838, p. 2, pl. 11, fig. 2; Obs., II, 1838, p. 2, pl. 11, fig. 2.—* TRoscHEL, Arch. fiir Nat., V, 1839; Pt. 2, p. 238.— *HANLEY, Test. Moll., 1842, p. 219.—* Conrap, Pr. Ac. N. Sci. Phila., 1853, p. 264.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 503.—* CaLkrns, Pr. Ottawa Ac., 1874, p. 47.—* CLEssIN, Conch. Cab. Ano., 1874, p. 121, pl. xxx1x, figs. 2, 3.—* PmTEL, Conch. Sam., III, 1890, p. 182. _ * Margarita (Anodonta) ovata LEA, Syn., 1836, p. 52; 1838, p. 30. * Anodon ovata CATLOW and REEVE, Conch. Nom., 1845, p. 67. *Margaron (Anodonta) ovata LEA, Syn., 1852, p.50; 1870, p. 80. *t Margarita (anodonta) salmonia LEA, Syn., 1836, p. 51; 1838, p. 30.2 *t Anodonta salmonia LEA, Tr. Am. Phil. Soc., VI, 1838, p. 45, pl. x1v, fig. 41; * Obs., II, 1838, p. 45, pl. x1v, fig. 41.—* TROSCHEL, Arch. fiir Nat., V, 1839, Pt. 2, p. 238.—* HANLEY, Test. Moll., 1842, p. 218.—* Conrap, Pr. Ac. N. Sci. Phila , VI, 1853, p. 264.—* H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 503.—* B. H. WRIGHT, Check List, 1888.—* Pa TEL, Conch. Sam., IIT, 1890, p. 184. *Anodon salmonia CATLOW and REEVE, Conch. Nom., 1845, p.68.—* SOWERBY, Conch. Icon., XVI, 1867, pl. x1x, fig. 44. *Margaron (Anodonta) salmonia LEA, Syn., 1852, p.50; 1870, p. 80. *t Anodonta lewisit LEA, Pr. Ac. N. Sci. Phila., I, 1857, p. 84; *J1. Ac. N. Sci. Phila., IV, 1860, p. 362, pl. LxM, fig. 187.— * Obs., VIII, p. 44, pl. xu, fig. 187.—* CLEs- sin, Conch. Cab. Ano., 1874, p. 143, pl. xirx, figs. 5, 6.—* Larcurorp, Tr. Ottawa F.N. Club, 1882, p.56.—* B. H. Wrieurt, Check List, 1888.—* Part, Conch. Sam., IIT, 1890, p. 181. *Anodon lewisii SOWERBY, Conch. Icon., XVII, 1870, pl. xxxv, fig. 142. *Margaron (Anodonta) lewisit LEA, Syn., 1870, p. 80. +ANODONTA GRANDIS var. FOOTIANA Lea. * Anodonta footiana Lea, Pr. Am. Phil. Soc., I, 1840, p. 289; * Tr. Am. Phil. Soc., VIII, 1842, p. 225, pl. xx, fig. 44; *Obs., III, 1842, p. 63, pl. xx, fig. 44.— * CONRAD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 264.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p.503.—* CLEss1n, Conch. Cab. Ano., 1876, p. 227, pl. LXV fig. 5; Lxxiv, fig. 3.—* Larcurorp, Tr. Ottawa F. N. Club, 1882, p. 56 — *B. H. WRIGHT, Check List, 1888.—* P@ TEL, Conch. Sam.. III, 1890, p. 179.— * BAKER, Moll. Chicago, Pt. 1, 1898, p. 54, pl. m1, figs. 2-4; v, fig. 2; vil, tig. 5. *Margaron (Anodonta) footiana LEA, Syn., 1852, p. 49; 1870, p. 78. * Anodon footiana SOWERBY, Conch. Icon., XVII, 1867, pl. xiv, fig. 48. *t Anodonta marryattana LEA, Pr. Am. Phil. Soc., I, 1840, p. 289; * Tr. Am. Phil. Soc., VIII, 1842, p. 226, pl. xx, fig. 45; *Obs., III, 1842, p. 64, pl. xx, fig. 45.— *CONnRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 264.—* H. and A. ADAMS, Gen Rec. Moll., IJ., 1857, p. 503.—* CLEssin, Conch. Cab. Ano., 1873, p. 72, )!. XXVI, figs. 3, 4.—* B. H. Wricut, Check List, 1888.—* Parry, Conch. Sam., Iil, 1890, p. 181. * Margaron (Anodonta) marryattana LEA, Syn., 1852, p. 51; 1870, p. 82. * Anodon marryattanus SOWERBY, Conch. Icon., XVII, 1870, pl. xxviii, fig. 111. * Anodonta suleata KUSTER, Conch. Cab. Ano., 1873, p. 62, pl. xvi, fig. 1. 1T have seen Say’s type of 4. grandis, and it appears to be identical with Lea’s ovata. 2This is an ovata which had become diseased internally, probably from the work of a Trematod, so that the nacre became roughened or blistered, and generally sal- mon colored. S No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON, 643 * Anodonta nilssonit KUSTER, part, Conch. Cab. Ano., 1853, p. 61, pl. xX vit, figs. 3, 4. * Anodon imbricata ANTHONY, Am. J]. Conch., I, 1865, p. 159, pl. x1v, fig. 1. * Anodonta imbricata B. H. WRIGHT, Check List, 1888.—* Pare, Conch. Sam., IIT, 1890, p. 180. * Anodon subinflata ANTHONY, Am. Ji. Conch., I, 1865, p. 160, pl. xv, fig. 1. * Anodonta subinflata B. H. Wricut, Check List, 1888.—* Pare., Conch. Sam., III, 1890, p. 185. * ? Anodon edentulus SOwERBY, Conch. Icon., XVII, 1867, pl. xvi, fig. 60. * Anodonta houghtonensis CURRIER, Shell-bearing Moll. Mich., 1881, p. 14, pl. 1, fig. 2,—* B. H. WricutT, Check List, 1888. +ANODONTA GRANDIS var. LEONENSIS Lea. * Anodonta leonensis Lea, Pr. Ac. N. Sci. Phila., VI, 1862, p. 169; *JI. Ac. N. Sei. Phila., VI, 1866, p. 25, pl. 1x, fig. 24; *Obs., XI, 1867, p. 29, pl. 1x, fig. 24.— *CLESSIN, Conch. Cab. Ano., 1874, p. 131, pl. x11, figs. 3, 4.—* B. H. Wrieut, Check List, 1888.—* Pa&TeL, Conch. Sam., ITI, 1890, p. 181. * Margaron (Anodonta) leonensis LEA, Syn., 1870, p. 78. +ANODONTA GRANDIS var. GIGANTEA Lea.! * Anodonta gigantea LEA, Tr. Am. Phil. Soc., 1834, p.1, pl. 1, fig. 1; * Obs., IT, 1838, p. 1, pl. 1, fig. 1.—* TRoscHEL, Arch. fiir Nat., V, 1839, Pt. 2, p. 238.—* HaNLEy, Test. Moll., 1842, p. 219.—* CarLow and REEVE, Conch. Nom., 1845, p. 67.— * KusTER, Conch. Cab. Ano., 1853, p.6, pl.1, figs. 1, 2.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 264.—* H. and A. ADAMS, Gen. Ree. Moll., IT, 1857, p. 502.— ~B. H. Wricut, Check List, 1888.—* PasTeL, Conch. Sam., IIT, 1890, p. 179. * Margarita (Anodonta) gigantea LEA, Syn., 1836, p. 52; 1838, p. 31. * Margaron (Anodonta) gigantea LEA, Syn., 1852, p.50; 1870, p. 81. * Anodon gigantea SOwERBY, Conch. Icon., X VII, 1867, pl. vi, fig. 18. * Anodon giganteus SOWERBY, Conch. Icon., XVII, 1870, pl. xxxvuy, fig. 152. “+t Anodonta plana? Lra, Tr. Am. Phil. Soc., V, 1834, p. 48, pl. vil, fig. 18; Obs., I, p. 160, pl. vu, fig. 18.—* FERussac, Guer. Mag., 1835, p. 25.—* HANLEY, . Test. Moll., 1842, p. 219.—* H. and A. Adams, Gen. Rec. Moll., II, 1857, p. 503.—* CLESSIN, Conch. Cab. Ano., 1874, p. 142, pl. xvi, figs. 1, 2.—* B. H. WriGut, Check List, 1888.—* PTEL, Conch. Sam., IIT, 1890, p. 183. * Margarita (Anodonta) plana LEA, Syn., 1836, p.52; 1838, p. 30. * Anodon plana Dr Kay, Zool. of N.Y., Pt. 5, 1843, p. 201, pl. xvui, fig. 232.—* Cat- Low and REEVE, Conch. Nom., 1845, p. 67.—* SowERBY, Conch, Icon., XVII, 1869, pl. xxIv, fig. 94. * Margaron (Anodonta) plana LEA, Syn., 1852, p.50; 1870, p. 80. * Anodonta declivis CONRAD, Am. J]. Sci., XXV, 1854, p. 341, pl.1, fig. 11; New F. W. Shells, 1834, p.73.—* FERusSAC, Guer. Mag., 1835, p. 25.—M6LLER, Syn., Nov. Gen., 1836, p. 194.—* ConrapD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 263. *+ Margarita (Anodonta) decora LEA, SYN., 1836, p. 52; 1838, p. 30. * Anodonta decora LEA, Tr. Am. Phil. Soc., VI, 1838, p. 64, pl. xx, fig. 63; * Obs., IT, 1838, p. 64, pl. xx, fig. 63.—* TROSCHEL, Arch. fiir Nat., V, 1839, Pt. 2, p. 238.— * HANLEY, Test. Moll., 1842, p. 219.—* ConrAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 263.—* H. and A. AnAms, Gen. Rec. Moll., II, 1857, p.502.—*CLzssin, Conch. Cab. Ano., 1873, p. 71, pl. x vil, figs. 1, 2.—* B. H. WrIautT, Check List, 1888.— *PaTEL, Conch. Sam., III, 1890, p. 178. 1A variety of grandis. The type is a large, heavy form, with a considerably developed posterior ridge, the shell somewhat truncated above and behind the ridge. I have frequently seen such shells which are evidently pathologic. ? This name is written palna in above citation; a typographical error, no doubt. 644 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL. * Anodon decora CATLOW and REEVE, Conch. Nom., 1845, p. 66.—* Sowerby, Conch. Icon., X VII, 1869, pl. xx1, fig. 83. * Margaron (Anodonta) decora La, Syn., 1852, p.50; 1870, p. 81. *tAnondonta harpethensis Lea, Pr. Am. Phil. Soc., I, 1840, p. 289; Tr. Am. Phil. Soc., VIII, 1842, p. 224, pl. xx, fig. 42; *Obs., III, 1842, p. 62, pl. x1x, fig. 42.— * ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 264.—* H. and A. ADAmMs, Gen. Ree. Moll., II, 1857, p. 502.—* CLessin, Conch. Cab. Ano., 1876, p. 217, pl. LXx11, figs. 1, 2.—* B. H. Wriacut, Check List, 1888:—* PaTEL, Conch. Sam., III, 1890, p. 180. *Margaron (Anadonta) harpethensis LEA, Syn., 1852, p.50; 1870, p. 81. * Anodon harpethensis SOwERBY, Conch. Icon., X VII, 1869, pl. xx1, fig. 82. *Anodon subangulata ANTHONY, Am. Jl. Conch., I, 1865, p. 158, pl. x111, fig. 1. * Anodonta subangulata, B. H. Wricut, Check List, 1888.—* Pa: rE, Conch. Sam., III, 1890, p. 185. * Anodonta opalina KUSTER, Conch. Cab. Ano., 1853, p. 60, pl. x v1, figs. 1, 2. *Anodon opalina ANTHONY, Am. Jl. Conch., I, 1865, p. 159, pl. xiv, fig. 2.—~ B. H. WriGcurt, Check List, 1888.—* PareL, Conch. Sam., III, 1890, p. 182.: *Anadon menieliti ANTHONY, Am. J1. Conch., II, 1866, p. 144, pl. v1, fig. 1. *Anodon subgibbosa ANTHONY Am. Jl. Conch., II, 1866, p. 144, pl. v1, fig. 2. * Anodonta subgibbosa B. H. WRIGHT, Check List, 1888.—PaTEL, Conch. Sam., ITI, 1890, p. 185. * dnodon subgibbosus SOWERBY, Conch. Icon., X VIII, 1870, pi. xxvit, fig. 107. *Margaron (Anodonta) subglobosa Lea, Syn., 1870, p. 81.” *Anodon inornata ANTHONY, Am. Jl. Conch., II, 1866, p. 145, pl. vu, fig. 1. * Anodonta ovata SOWERBY, Conch. Icon., XVII, 1868, pl. xxu, fig. 85. +ANODONTA GRANDIS var. BENEDICTENSIS Lea. *Symphynota benedictensis LEA, Tr. Am. Phil. Soc., V., 1834, p. 104, pl. xvi, fig. 48; * Obs., I, 1834, p. 216, pl. xvi, fig. 48. * Anodonta benedictensis FERUSSAC, Guer. Mag., 1835, p. 25.—* HANLEY, Test. Moll., I, 1842, p. 216.—* C. B. ADAMs, Thompson’s Hist. Vt., 1842, p. 164; F. W. and L. S. of Vt., p. 14.—* DE Kay, Zool. N. Y., Pt. 5, 1843, p. 204, pl. x vim, fig. 235.—* HANLEY, Biv. Shells, 1843, p. 216.—* Stimpson, Shells of N. Eng., 1851, p. 15.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 263.—* H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 503.—* CLEessin, Conch. Cab. Ano., 1875, p. 163, pl. Liv, figs. 1, 2.—* PasTeL, Conch. Sam., III, 1890, p. 177. * Margarita (Anodonta) benedictensis Lea, Syn., 1836, p. 28; 1838, p. 29. * Anodon benedictensis CATLOW and REEVE, Conch. Nom., 1845, p. 66.—* Sow- ERBY, Conch. Icon., XVII, 1870, pl. xxv, fig. 99. * Margaron (Anodonta) benedictensis Lra, Syn., 1852, p. 47. * Margaron (Anodonta) benedictii Lea, Syn., 1870, p. 75. * Anodonta benedictii LATCHFORD, Tr. Ottawa F. N. Cl., 1882, p. 55.—~ B. H. WriGut, Check List, 1888. Anodonta cultrata GOULD, in letter. Entire Mississippi system; Upper St. Lawrence drainage; Red River ofthe North; Lake Winnipeg; Manitoba; southwest to Texas; south- east Pennsylvania? ? ) t ANODONTA BEALEI Lea. * Anodonta bealet Lea, Pr. Ac. N. Sci. Phila., VII, 1863, p. 194; * J]. Ac. N. Sci. Phila., VI, 1866, p. 26, pl. rx, fig. 25; *Obs., XI, 1867, p. 30, pl. 1x, fig. 25.— 1 Kuster and Anthony appear to have applied the same name independently to this species. 2As of Anthony. No. 1205. SYNOPSIS OF THE NAITADES—SIMPSON. 645 * CLEssIN, Conch. Cab. Ano., 1874, p. 132, pl. XLIV, figs. 5, 6.—* B. H. Wrignt, _ Check List, 1888.—* P2zTEL, Conch. Sam., III, 1890, p. 176. *Margaron (Anodonta) bealei LEA, Syn., 1870, p. 81. Texas to Kansas. +ANODONTA TEXASENSIS Lea.! * Anodonta texasensis LEA, Pr. Ac. N. Sci. Phila., III, 1859, p. 113; * Jl. Ac. N. Sci. Phila., IV, 1860, p. 366, pl. Lx11, fig. 191; *Obs., VIII, 1860, p. 48, pl. Lxin, fig. 191.—* CLESSIN, Conch. Cab. Ano., 1873, p. 109, pl. Xxx1II, figs. 7, 8.— *B. H. WriGcut, Check List, 1888.—* P# TEL, Conch. Sam., III, 1890, p. 185. * Anodon texasensis SOWERBY, Conch. Icon., X VII, 1870, pl. xxxv1, fig. 146. * Margaron (Anodonta) texasensis LEA, Syn., 1870, p. 81. Texas. tANODONTA DANIELSII Lea. * Anodonta danielsii Lea, Pr. Ac. N. Sci. Phila., II, 1858, p. 139; * Jl. Ac, N. Sci. Phila., IV, 1860, p. 365, pl. Lx1u11, fig. 190; * Obs., VIII, 1860, p. 47, pl. LXxin, fig. 190.—* CLEssIN, Conch. Cab. Ano., 1873, p. 108, pl. xxxu1I, figs. 1, 2.— *B. H. Wriaut, Check List, 1888.—* PTE, Conch. Sam., III, 1890, p. 178. * Margaron (Anodonta) danielsiit LEA, Syn., 1870, p. 78. * Anodonta danielsii SOWERBY, Conch. Icon., X VII, 1870, pl. xxxvI, fig. 148. * Margaritana danielsii PasrEL, Conch. Sam., III, 1890, p. 173. Kansas; Indian Territory. t ANODONTA OPACA Lea. * Anodonta opaca LEA, Tr. Am. Phil. Soc., X, 1852, p. 285, pl. xxv, fig. 46; * Obs., V, 1852, p. 41, pl. xxv, fig. 46.—* Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 264.—* H.and A. Apams, Gen. Rec. Moll., II, 1857, p. 503.—* CLEssin, Conch. Cab. Ano., 1875, p. 209, pl. LXIV, figs. 1, 2" B. H. Wricut, Check ES, 1888. * Margaron Cia, opaca LEA, Syn., 1852, p. 50; 1870, p. 80. Louisiana; Mississippi; north to Kansas. +t ANODONTA STEWARTIANA Lea. * Anodonta stewartiana LEA, Tr. Am. Phil. Soc., V, 1834, p. 47, pl. vi, fig. 17; Obs., I, 1834, p. 159, pl. vi, fig. 17.—* FERussac, Guer. Mag., 1835, p. 25.—* HAN- LEY, Test. Moll., 1842, p. 220; * Biv. Shells, 1843, p. 220.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 264.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 503.—* CLESSIN, Conch. Cab. Ano., 1874, pl. xLVuI, figs. 3, 4.—* B. H. WRIGHT, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 185. * Margarita (Anodonta) stewartiana LEA, Syn., 1836, p.52; 1838, p. 31. * Anodon stewartiana CATLOW and REEVE, Conch. Nom., 1845, p. 68. * Anodon stewartianus SOWERBY, Conch. Icon., XVII, 1870, pl. xx x11, fig. 133. * Margaron (Anodonta) stewartiana LEA, Syn., 1852, p.51; 1870, p. 81. *t Anodonta virens Lea, Tr. Am. Phil. Soc., X, 1852, p. 290, pl. xvuII, fig.53; *Obs., V, 1852, p. 46, pl. xxvill, fig. 53.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 267.—* H. and A. Apams, Gen. Rec. Moll., IT, 1857, p. 503.—* B. H. WriGutT, Check List, 1888. *Margaron (Anodonta) virens LEA, Syn., 1852, p.51; 1870, p. 81. *Anodon virens SOWERBY, Conch. Icon., XVII, 1870, pl. xxx1v, fig. 138. Arkansas; Louisiana; Texas. 1A very young, broken shell, greatly inflated in the post basal region, is all that Lea has in his collection. It may be a distinct species, or a mere variety of grandis. 646 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. t ANODONTA CORPULENTA Cooper. * Anodonta corpulenta COOPER, App. to Narrative, Exp. Miss. to It. L., 1854, p. 154.—* MOLLER, Syn. Nov. Gen., 1836, p. 193.—* COOPER, Second App. School. Expl. Exp., 1855, p.516.—* CaLkins, Pr. Ottawa Ac. Sci., 1874, p.47.—* B. H. WriaGut, Check List, 1888. * Anodon corpulenta SOWERBY, Conch. Icon., XVII, 1870, pl. xx xu, fig. 129. *Margaron (Anodonta) corpulenta Lua, Syn., 1870, p. 81. Missouri River; Upper Mississippi River drainage; east to Indiana; Tyler, Texas.?. Appears to be replaced in the South by A. stewartiana. t ANODONTA LINNEANA Lea. *Anodonta linneana Lira, Tr. Am. Phil. Soc., 1852, p. 289, pl. xxvii, fig. 51; *Obs., V, 1852, p. 45, pl. LXX VII, fig. 51.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 264.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 502.—* CLEssin, Conch. Cab. Ano., 1874, p. 117, pl. xxxv1, figs. 5, 6.—* B. H. Wriaut, Check List, 1888.—* Parr, Conch. Sam., III, 1890, p. 181. *Margaron (Anodonta) linneana LEA, Syn., 1852, p.51; 1870, p. 81. *Anodon linneanus SOWERBY, Conch. Icon., XVII, 1870, pl. xxxv, fig. 144. Louisiana; Texas. +t ANODONTA GLOBOSA Lea. * Margarita (Anodonta) globosa LEA, Syn., 1836, p. 52. * Anodonta globosa Lva, Pr. Am. Phil. Soe., II, 1841, p. 31; *Tr. Am. Phil. Soe., VIII, 1842, p. 241, pl. xxiv, fig.56; *Obs., ITT, 1842, p. 79, pl. xx1v, fig. 56.—-* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 502.—* CLessin, Conch. Cab. Ano., 1875, p. 213, pl. LXV, figs. 3,4.—* B. H. Wricut, Check List, 1888.—* P&TEL, Conch. Sam., III, 1890, p. 180.—* FiscHErR and CROssE, Miss. Sci., Pt. 7, I, 1894, p. 529, pl. Lx vu, figs. 1, la. *Anodon globosa CATLOW and REEVE, Conch. Nom., 1845, p. 67.—* SOWERBY, Conch. Icon., X VII, 1870, pl. Xxxv, fig. 141. *Margaron (Anodonta) globosa LEA, Syn., 1852, p.51; 1870, p. 81. *+dnodon nopalatensis SOWERBY,! Conch. Icon., XVII, 1867, pl. xvi, fig. 58.— * CLESSIN, Conch. Cab. Ano., 1876, p. 223, pl. Lx x10, fig. 3.—* B. H. WRIGHT, Check List, 1888.—* PaTeL, Conch. Sam., III, 1890, p. 182.—* FISCHER and CrossF, Miss. Sci., Pt. 7, II, 1894, p. 531. *Margaron (Anodonta) nopalatensis LEA, Syn., 1870, p. 81. Mexico. ANODONTA TABASCOENSIS Morelet. * Anodonta tabascoensis MORELET, Jl. de Conch., XXXII, 1884, p. 124.—* Pa&TEL, Conch: Sam., III, 1890, p. 185.—* FiscHER and Crossk, Miss. Sci., Pt. 7, II, 1894, p. 530, pl. LXII, fig. 1. Tabasco, Mexico. 'Lea’s globosa is a young shell. Sowerby’s nopalatensis is the adult. There is a magnificent specimen in the collection of the Philadelphia Academy of Natural Sci- ences, 7+ inches long and 53} inches high. No. 1208. SYNOPSIS OF THE NAIADES—SIMPSON. 647 ANODONTA MICANS Anthony. * Anodonta micans ANTHONY, Am. JI. Conch., I, 1865, p. 162, pl. x v1, fig. 1.—* B. H. WRIGHT, Check List, 1888. *Margaron (Anodonta) micans LEA, Syn., 1870, p. 78. Said to come from Texas. Ido not know it, nor where it groups, though it seems something like A. kennicottit. ANODONTA LURULENTA Morelet. * Anodonta lurulenta MORELET, Test. Nov. Pt. 1, 1829, p. 28.—* FISCHER and CROSSE, Miss. Sci., Pt. 7, I, 1894, p. 525, pl. Lx1v, figs. 6, 6a. Guatemala; Yucatan. tANODONTA KENNICOTTII Lea. “Anodonta kennicottit LEA, Pr. Ac. N. Sci. Phila., V, 1861, p. 56; *Jl. Ac. N. Sci. Phila., V, 1862, p. 214, pl. xxxuu1, fig. 283; * Obs., [X, 1863, p. <6, pl. XXXII, fig. 283.—* CLESSIN, Conch. Cab. Ano., 1874, p. 153, pl. XLIXx, figs. 3, 4.—* B. H. WRIGHT, Check List, 1888. *Margaron (Anodonta) kennicottii LEA, Syn., 1870, p. 78. *t Anodonta simpsoniana Lma, Pr. Ac. N. Sci. Phila., V, 1861, p.56; *J1. Ac. N. Sci. Phila., V, 1862, p. 212, pl. xxx1I, fig. 281; *Obs., IX, 1863, p. 34, pl. xx x11, fig. 281.—*CLESSIN, Conch. Cab. Ano., 1874, p. 119, pl. Xxxvu, figs. 5, 6.—* B. H. WRIGHT, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 184. *Margaron (Anodonta) simpsoniana LEA, Syn., 1870, p. 78. *Anodon simpsonianus SOWERBY, Conch. Icon., X VII, 1870, pl. xx xvil, fig. 153. © *t Anodonta dallasiana LEA, Pr. Ac. N. Sci. Phila., VII, 1863, p. 190; *J1l. Ac. N. Sci. Phila., VI, 1866, p. 29, pl. x1, fig. 28; *Obs., XI, 1863, p.33, pl. x1, fig. 28.— *CLESSIN, Conch. Cab. Ano., 1873, p. 107, pl. xx x11, figs. 3, 4.—* B. H.WrIGuT, Check List, 1888.—* P#® TEL, Conch. Sam., III, 1890, p. 178. ; *Margaron (Anodonta) dallasiana LEA, Syn., 1870, p. 78. Upper and middle St. Lawrence River system; northwest into the Mackenzie drainage. tANODONTA PEPINIANA Lea. *4nodonta pepinianus LEA, Tr. Am. Phil. Soc., VI, 1838, p. 96, pl. xv1, fig. 51.— * TROSCHEL, Arch. fiir Nat., V, 1839, II, p. 239. * Anodon pepinianus SOWERBY, Conch. Icon., X VII, 1870, pl. xxxv1, fig. 150. * Anodonta pepiniana LEA, Obs., II, 1838, p.96, pl. x v1, fig. 51.—HANLEY, Test. Moll., 1842, p. 220; Biv. Shells, 1843, p. 220.—*ConrabD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 264.—* H. and A. ADAms, Gen. Rec. Moll., I, 1857, p. 503.—*CLEssIN, Conch. Cab. Ano., 1874,p. 158, pl. Lim, figs. 1,2.—* B. H. Wrient, Check List, 1888.— * PEHTEL, Conch.Sam., III, 1890, p. 183. “Margarita (Anodonta) pepiniana LEA, Syn., 1838, p. 30. *Margaron (Anodonta) pepiniana LEA, Syn., 1872, p.49; 1850, p. 78.! Upper and middle St. Lawrence drainage; Lake Winnipeg. ' Although this resembles to some extent the so-called Anodonta modesta, and is sometimes slightly incurved in front of the beaks, the beak sculpture is that of the A. grandis group, and quite different from that of A. modesta. 648 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. ANODONTA LUGUBRIS Say. Anodonta lugubris Say, N. Harm. Diss. II, 1829, p. 340.! The following are indeterminate and spurious Anodontas: *Anodon anatinus SowERBY, Rich. Faun. Borealé Am., III, 1836, p. 316. Saskatchewan River; probably A. implicata. * Anodonta apollonica BOURGUIGNAT, Moll. Aceph. Eur., 1881, p. 91. Asia Minor. * Anodonta aureus P®TEL, C.Sam., III, 1890, p. 176. China. * Anodonta brandti DROUET, Jl. de Conch., 1888, p. 108. * Anodonta callifera VON MARTENS, Proc. Zool. Soc., 1860, p. 15. * Anodonta chantrei BOURGUIGNAT, J. de Conch., 1883, p. 187. * Anodonta chinensis PTEL, C. Sam., III, 1890, p. 177. * dnodon cochlearis SOWERBY, C. Icon., X VII, 1870, pl. xxxiH1, fig. 185. Probably a glabaris. * Anodonta cornea PHILIPPI, Menke’s Zeits., 1848, p. 130. * Anodonta curvatus JAY, Cat., 1850, p. 27. Anodon dalei LESSON, Oeuvres Buffon, I, p. 155, pl. 111, fig. 1.? * Anodonta dignota RAFINESQUE, Cont. Mon., 1831, p. 6. * Anodonta fragilis FITZINGER, Syst. Verz., 1833, p. 120. _ *Anodonta gallandi BOURGUIGNAT, Mat. Aceph. Eur., 1881, p. 95. * Anodonta hockingensis Cau, Am. Nat., 1880, p.529, Moore, manuscript. Accord- ing to Call, it is 4. grandis Say. * Anodonta inflata RAFINESQUE, Cont. Monog., 1831, p. 6. * Anodonta laminata ROCHEBRUNE, Bull. Soc. Philom., VI, 1882, p. 40. * Anodonta martenst CLESSIN, C. Cab. Ano., 1876, p. 181, pl. Lx101, fig. 2. * Anodonta ohioensis RAFINESQUE, An. Gen. Sci, Brux., V, 1820, p. 316. Anodonta ovata STARK, Elements Nat. Hist., II, 1822, p. 90. *Anodon pictus SWAINSON, Ex. Conch., 2d ed., 1841, p. 39. * Anodonta polymorpha LEA, Syn., 1870, p.84. Credited to Kuster. Where? * Anodonta pseudodontopsis BOURGUIGNAT, Jl. de Conch., 1883, p. 187. * Anodontites radiata VALENCIENNES, Enc. Meth., 1824, p. 147, pl. cc1il, fig. 4= Modiolaria nigra. * Anodonta recurvirostra LEA, Syn., 1870, p. 84; Kuster. (?). * Anodonta rugifera DUNKER, Mal. B1., 1858, p. 225. Probably a Spatha. * Anodonta schlaflii Mousson, J. de Conch., 1874, p. 51. * Anodonta sedakowi SIECMASCHKO, Bull. de Ac. Petersb., 1849, p. 225. * Anodonta somersi CALL, Am. Nat., 1880, p. 529, credited to Moore, manuscript, A. grandis fide Call. . * Anodonta subrostrata PHILipPi, Mal. BI., 1869, p. 39. * Anodonta subsinuata PHiLipPi, Mal. B1., 1869, p. 41. A glabaris probably. * Anodonta sulcosa H. and A. ADAMS, Gen. Ree. Mol1., II, 1857, p.503. Said to be of Conrad. Where? * Anodon triangularis SOwERBY, Conch. Icon., XVII, 1867, pl. xv, fig. 56. *Anodonta trigona HELD, Isis., 1836, p. 280, 4. cygnea probably. The name was used by Spix in 1827. 1T do not know what this is. It is said to come from the Cumberland River, and is very likely one of the forms of A. grandis. I have omitted the synonymy. ae OS ee) NO. 1205. SYNOPSIS OF THE NAIA DES—SIMPSON. 649 * Anodonta truncata KUSTER, Faun. Dalm., 1866, p. 131. * Anodonta tunizana MORELET, J. de Conch., 1864, p. 156, _ * Anodonta viridis H.and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 503, asof Lea. Lea did not describe it. Genus COLLETOPTERUM Bourguignat, 1881. (Type, Anodonta letourneuxit Bourguignat. ) Colletopterum BoURGUIGNAT, Lettres Malacologiques, 1881, p. 45. Shell inflated, thin, winged in front and behind, hinge arched, very short, without teeth, but with a feeble lateral lamella shown in pro- nounced relief; ligament internal. Animal unknown. COLLETOPTERUM LETOURNEUXI Bourguignat. Anodonta letourneuxi BOURGUIGNAT, Annales Mal., I, 1870, p. 76. * Anodonta (Colletopterum) letourneuxt WESTERLUND, Faun. Pal., II, 1890, Pt. 7, p. 310. Colletopterum letourneuxt BOURGUIGNAT, Lett. Mal., 1882, p. 46; * Bull. Soc. Mal. Fr., VII, 1890, pl. v1, figs. 1, 2. -Servia, at Belgrade. COLLETOPTERUM PRACLARUM Bourguignat. Anodonta preclara BOURGUIGNAT, Ann. Mal., I, 1870, p. 78. * Anodonta (Colletopterum) preclara, WESTERLUND, Faun. Pal., II, 1890, Pt.7, p.310. Colletopterum praclarum BOURGUIGNAT, Lett. Mal., 1882, p. 46. Bulgaria, at Rutschuk. COLLETOPTERUM EXIMIUM Bourguignat. Anodonta eximia BOURGUIGNAT, Ann. Mal., I, 1870, p. 80. * Anodonta (Colletopterum) eximia WESTERLUND, Faun. Pal., II, 1890, Pt.7 p. 310. Wallachia at Giurgevo. COLLETOPTERUM TANOUSI Bourguignat. Anodonta tanousi BOURGUIGNAT, Ann. Mal., I, 1870. * Anodonta (Colletopterum) tanoust WESTERLUND, Faun. Pal., II, 1890, Pt. 7, p. 311. Servia at Belgrade.' Genus GABILLOTIA Servain, 1890. (Type, Anodonta pseudodopsis Locard.) Gabillotia SERVAIN, Bull. Soc. Mal. Fr., VII, 1890, p. 296. Shell large, subsolid, subcompressed, more or less rhomboid gaping behind; beaks low, with fine, broken, concentric sculpture; epidermis -1T am wholly unacquainted with this genus. All the species are from the Danube, and if the characters are accurately given it may possibly be a valid genus, though Westerlund gives it subgeneric rank under Anodonta. It is more than likely, how- ever, that all the so-called species are merely specimens of the well-known Anodonta cygnea, having a dorsal wing which conceals the ligament, and something which may be vestiges of lateral teeth. Such examples occur among Anodontas in other parts of the world. 650 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XX. shining; teeth rudimentary, one in each valve, sometimes rather sharp pointed and flattened; hinge with occasional vestiges of laterals; epi- dermal matter mingled with the nacre on the hinge; nacre brilliant, often finely radially ridged, especially at the palleal line. Animal unknown. GABILLOTIA PSEUDODOPSIS Locard. 3 * 4nodonta pseudodopsis LOCARD, Mal. d’laes Tib., 1883, p. 61, pl. x1xbis., figs. 1-3. z *Gabillotia pseudodopsis, SERVAIN, Bull. Soc. Mal. Fr., VII, 1890, p. 296, fig. Syria. GABILLOTIA LOCARDI Servain. *Gabillotia locardi SERVAIN, Bull. Soc. Mal. Fr., VIT, 1890, p. 296, pl. v, figs. 1, 2. Asia Minor. a GABILLOTIA OPPERTI Bourguignat. } * Unio opperti Bourguignat, Rev. et Mag., VIII, 1856, p.71, pls. vil, fig. 6; 1X, fig. 1. *Pseudodon opperti WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 182. *Margaritana opperti Pa TEL, Conch. Sam., III, 1890, p. 173. *Margaritana euphratica KOBELT, Icon., new ed., II, 1886, p. 26, pl. XLv, fig. 266. Kuphrates River. +GABILLIOTIA EUPHRATICA Bourguignat. * Unio euphraticus BOURGUIGNAT, Test. Nov., 1852, p. 28; * Cat. Rais., 1853, p. 75, pl. 1v, figs. 1-3; * Rev. et Mag., VIII, 1856, p. 72. * Pseudodon euphratica CONRAD, Am, JI. Conch., I, 1865, p. 233. Margaritana euphratica VON MARTENS, Vorderas Conch., 1874, p.*—KoBE.7, Icon., new ed., II, 1886, p. 26, pl. xiv, fig. 266.—* PaTEL, Conch. Sam., III, 1890, p. 173. ; * Leguminaia euphratica WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 188. * Unio churchillianus SOWERBY, Conch. Icon., XVI, 1868, pl. xcv1, fig. 526. | GABILLOTIA EUPHRATICA var. CHURCHILLIANUS Bourguignat. * Unio churchillianus BOURGUIGNAT, Rey. et Mag., 1857, p. 18, pl. 11, figs. 1-4.— *PTEL, Conch. Sam., III, 1890, p. 148. * Pseudodon churchillianus WESTERLUND, Faun. Pal., II, Pt .7, 1890, p. 183. "+t Monocondylwa rhomboidea Lea, Pr. Ac. N.Sci., Phila., III, 1859, p. 187; *Jl. Ac. N. Sci., Phila., IV, 1860, p. 263, pl. xu, fig. 143; * Obs., VII, 1860, p. 81, pl. XLII, fig. 143. * Margaron (Monocondylea) rhomboidea LEA, Syn., 1870, p. 72. * Microcondylwa rhomboidea PasrEL, Conch. Sam., III, 1890, p. 175. * Leguminaia rhomboidea KOBELT, Icon., new ed., VI, 1893, p. 94, pl. CLXX VIM, figs. 1124, 1125. *Unio rhomboideus SOwERBY, Conch. Icon., XVI, 1868, pl. LXxxIXx, fig. 480. * Pseudodon rhomboideus WESTERLUND, Faun. Pal., II, pl. vu, 1890, p. 183. Asiatic Turkey. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 651 Genus LEGUMINATA Conrad, 1865. (Type, Monocondylea mardinensis Lea. ) Leguminaia CONRAD, Am. J1. Conch., I, 1865, p. 233. Microcondylwa VEST, Verh. Mitth. Sieben. Ver. Nat., 1866, p. 201. Microcondylus DROUET, Jl. de Conch., 1879, p. 138. Shell rhomboid-elliptical, slightly biangulate behind; posterior ridge faint and double; beaks anterior, sculptured with fine, concentric ridges which are sometimes slightly corrugated, but which show a tendency to form two rounded loops; surface smooth or with very faint corruga- tions on the posterior slope; epidermis rayless or nearly so; a single tooth in each valve, that in the left under the beak, that in the right in front of it, teeth smooth; epidermal and ligamentary matter mingled with the nacre along the hinge; the two front anterior muscle scars united, the hinder distinct, posterior scars faint; beak cavities shallow; dorsal scars few, irregularly disposed. Animal with the outer branchize adherent to the mantle throughout their entire length; inner free from the abdominal sac. (Drouet.) Section LEGUMINAIA Conrad, 1865. (Type, Monocondylea mardinensis Lea.) Shell somewhat solid, elliptical torhomboid; beaks rather full; teeth strong, with sometimes a slight secondary tooth in the left valve, well in front. Group of Leguminaia mardinensis. Characters as in the subgenus. {| LEGUMINAIA MARDINENSIS Lea. * Monocondylwa mardinensis Lea, Pr. Ac. N.Sci., Phila., VIII, 1864, p. 286; *J1. Ac. N. Sci. Phila., VI, 1869, p. 252, pl. xxx, fig.67; *Obs., XII, 1869, p. 12, pl. xxx, fig. 67. *Leguminaia mardinensis CONRAD, Am. JI. Conch., I, 1865, p. 233.—* Locarp, Arch. Mus. Lyon., III, 1883, p. 250.—* WESTERLUND, Faun. Pal., II, Pt.7,1890,p.188.— KOBELT, Icon., new ed., VI, 1893, p. 92, pl. CcLX XVII, figs. 1122, 1123. *Margaron (Monocondylea) mardinensis LEA, Syn., 1870, p. 73. * Margaritana mardinensis CLESSIN, Conch. Cab. Ano., 1876, p. 266, pl. LX x xTII, figs. 1, 2.—* PaTrE., Conch. Sam., III, 1890, p. 173. LEGUMINAIA MARDINENSIS var. CHANTREI Locard. *Leguminaia chantret Locarp, Arch. Mus. Lyon, III, 1883, p. 252, pl. x1xbis, figs. 8-10.—* KoBELT, Icon, Ist sup., 1895, p. 23, pl. Iv, fig. 3.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 198. *Monocondylea chantreyt Pa: TEL, Conch. Sam., IIT, 1890, p. 174. *Leguminaia bourguignatti Locarp, Arch. Mus. Lyon, III, 1883, p. 252, pl. xtxbis, figs. 11-18.—WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 189. Southern Turkey in Asia. 652 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. LEGUMINAIA TRIPOLITANA Bourguignat.! *Unio tripolitanus BOURGUIGNAT, Test. Noy., 1852, p. 28; * Cat. Rais., 1853, p. 75, = pl. ry, figs. 12, 12a; * Rev. et Mag., 1856, p. 72.—* Pa TEL, Conch. Sam., III, 1890, p. 155. *Pseudodon tripolitanus CONRAD, Am. Jl. Conch.., I, 1865, p. 233. * Margaritana tripolitana CLESSIN, Conch. Cab. Ano., 1876, p. 265, pl. LXxxv, figs. 6, 7.—* P#TEL, Conch. Sam., III, 1890, p. 174. *Leguminaia tripolitana WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 190. Tripoli, Syria. tLEGUMINAIA WHEATLEYI Lea. *Monocondylwa wheatleyi Lea, Pr. Ac. N. Sci, Phila., VI, 1862, p. 176; * JI. Ac. N. Sci., Phila., V, 1863, p. 400, pl. 1, fig. 307; * Obs., X, 1863, p. 34, pl. L, fig. 307. * Pseudodon wheatleyi CONRAD, Am. Jl. Conch., I, 1865, p. 233. * Margaron ( Monocondylwa) wheatleyi Lea, Syn., 1870, p. 72. * Microcondylwa (Margaritana) wheatleyi CLESSIN, Conch. Cab. Ano., 1875, p. 259, pl. Lx xx], figs. 1, 2. *Mycrocondylea wheatleyt PasTEL, Conch. Sam., III, 1890, p. 175. *Lequminaia wheatleyt Locarp, Arch. Mus. Lyon, ITI, 1883, p. 276.—WeEsTER- LUND, Faun. Pal., II, Pt. 7, 1890, p. 189. Southern Turkey in Asia. LEGUMINAIA SAULCYI Bourguignat. *Unio saulcyi BOURGUIGNAT, Test. Noviss., 1852, p.27; *Cat. Rais., 1853, p. 74, pl. 111, figs. 1-3.—* TRISTRAM, Pr. Zool. Soc. Lond., 1865, p. 544. * Pseudodon saulcyt CONRAD, Am. J]. Conch., I, 1865, p. 233. * Margaron (Monocondylea) sauleyi Lea, Syn., 1870, p. 72. *Micrecondylwa saulcyt CLESSIN, Conch. Cab Ano., 1876, p. 260, pl. LXxxvI1, figs. 4, 5.—* Paren, Conch. Sam., III, 1890, p. 175.—* WESTERLUND, Faun. Pal., IJ, Pt. 7, 1890, p. 190. Syria. LEGUMINAIA MICHONII Bourguignat. * Unio michonit BOURGUIGNAT, Test. Nov., 1852, p. 27; * Cat. Rais., 1853, p. 74, pl. 111, figs. 10-12; Rev. et. Mag., 1856, p. 72. * Pseudodon michoniti CONRAD, Am. J1., I, 1865, p. 233. *Margaritana michonii PasTEL, Conch. Sam., III, 1890, p. 173. *Leguminaia michonti WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 190. Jaffa, Syria. (Group of Leguminaia locardi.) Shell- nearly evenly elliptical, somewhat inflated, rather thin, sub- transparent; beaks near the center, rather full, curved forward, with irregular undulations; epidermis bright yellowish brown; nacre bril- liant; pseudocardinals very obtuse, rather prominent and thick. ‘Probably a mere variety of L. mardinensis. NO. 1205, SYNOPSIS OF THE NAIADES—SIMPSON. 653 LEGUMINAIA LOCARDI Simpson. *Pseudodon chantrei LOCARD, Arch. Mus. Lyon, III, 1883, p. 254, pl. xrxbis, figs. 4—7,!—* WESTERLUND, Faun. Pal., IT, Pt. 7, 1890, p. 183. Lake Antioch, Syria. Section MICROCONDYLZEA Vest, 1866. (Type, Anodonta uniopsis LAMARCK.?) Shell inequilateral, elongate, subrhomboid or elliptical, compressed, rather thin, with low beaks; teeth rudimentary, much compressed, a single one in each valve; nacre bluish or purplish white. Animal, as in typical Leguminaia. + LEGUMINAIA UNIOPSIS Lamarck.’ “Anodonta uniopsis LAMARCK, An. sans Vert., VI, 1819, p. 86.—* HANLEy, Test. Moll., 1842, p. 217; * Biv. Shells, 1843, p. 217.—* DEsHaAyYEs, Tr. Element., II, 1853, p. 218, pl. xxx, fig. 4.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 503.—* P&TEL, Conch. Sam., III, 1890, p. 186. * Margarita (Anodonta) wniopsis LEA, Syn., 1836, p. 50; 1838, p. 30. * 4Anodon uniopsis CATLOW and REEVE, Conch. Nom., 1845, p. 68. *Margaron (Anodonta) uniopsis LEA, Syn., 1852, p. 49; 1870, p. 78. “Unio depressa C. PFEIFFER, Nat. Deuts. Moll., 1825, Pt. 2, p. 32, pl. v111, figs. 3, 4.4 *Leguminaia depressa WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 191. * Alasmodonta compressa MENKE, Syn., 1828, p. 106.—* Porro, Mal. Como., 1838, p. 113.—* STaBILE, Faun. Lug., 1845, p. 60, pl. 11, fig. 71. *Unio bonelli ROSSMASSLER, Icon., II, 1835, p. 24, pl. 1x, fig. 134.5—* HANLEY, Test. Moll, 1842, p. 212; * Biv. Shells, 1848, p. 212, pl. x x111, fig. 59.—* CaTLow and REEVE, Conch. Nom., 1845, p. 56.—* SowERBy, Conch. Icon., XVI, 1868, pl. LXXIX, fig. 414. *Margarita (Margaritana) bonelliti LEA, Syn., 1836, p. 45; 1838, p. 27. *Margaritana bonellii Kuster, Conch. Cab. Unio, 1862, p. 296, pl. xcrx, fig. 1.— * KOBELT, Icon., 1884, p. 62, pl. Xxv, figs. 208, 209; xxv1, fig. 210. *Margaron (Margaritana) bonelliit LEA, Syn., 1852, p. 435; 1870, p. 72. *Baphia bonellii H. and A. ADAMS, Gen. Rec. Moll., IT, 1857, p. 498. 1Locard described this as a Pseudodon, and previously in the same year described a Leguminaia chantrei, which seems to me to be a mere variety of L. mardinensis. As both are undoubtedly Leguminaias, and as the present species was the last described, I am compelled to change its name. ?Lamarck’s brief description of Anodonta uniopsis entirely agrees with the shell commonly known as Microcondylwa or Monocondylewa bonelli. The statement that the ligament passes into the hinge exactly fits this, and this is one of the best generic characters of Leguminaia. >The amount of variation of this species is very great. In many cases the poste- rior end has evidently been injured by unfavorable environment, and the shell is dwarfed and variously distorted, and sometimes a good deal thickened. Of course every individual variation and distortion of this kind has been seized on by the New School and elevated to specific rank. I have seen only what seemed to me a single species of this subgenus, and nothing which really was worthy of a varietal name. 4Credited to Muhlfeld in literature. 5Credited by Rossmiissler to Ferussac, but without other reference. Lea says Ferussac’s manuscript labels, neither of which constitutes a published description. 654 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. * Anodon bonelli SOwERBY, Conch. Icon., XVII, 1867, pl. x1, fig. 34. * Microcondylaea bonelli CLESSIN, Conch. Cab. Ano., 1861, p. 257; Moll. Osterr., 1887, p. 719, figs. 486, 487. —* Pa Te, Conch. Sam. III, 1890, p. 175. *Microcondylus bonelli Drover, Jl. de Conch., xxv1, 1879, p. 138; min Italie, 1885, p. 110. : *Margaritana (Microcondylaea) bonellii KOBELT, Icon., 1884, p. 62, pl. xxv, figs. 208, 209. *Leguminaia bonellii WESTERLUND Faun. Pal., II, Pt. 7, 1890, p. 191. South central Europe. Genus LASTENA Rafinesque, 1820. (Type, Lastena lata Rafinesque. ) Lastena RAFINESQUE, Ann. Gen. Sci. Phys. Brux., 1820, p. 316. Odatelia RAFINESQUE, Atlantic Jl. and Friend., 1832, p. 154. Leptodea (Rafinesque) CONRAD, Pr. Ac. N. Sci. Phila., 1853, p. 262. Shell elongated, subsolid, inequilatural, generally wider in front, rounded-truncate at anterior base, pointed at post-basal region, and having a low posterior ridge, with one or more secondary ridges above it; beaks low, sculpture consisting of a few coarse, irregular, longi- tudinal folds; epidermis shining, often rayed; a single imperfect tooth occurs in each valve, and sometimes vestiges of laterals; there is one roughened dorsal scar in the shallow beak cavity; muscle sears very large, deep and distinct, the posterior greatly elongated; nacre pur- plish, shading to blue at the edge; palleal line radially ridged. Animal with very long branchiz, inner and outer about alike in size and form, projecting free slightly behind, the inner free from the abdom- inal sac nearly the whole length, brownish throughout; palpi long, large; mantle thickened at edge, brown, black above; branchial opening large, with heavy papille; anal opening large, without papillz; super- anal opening united below; foot very large when living, club-shaped, capable of great extension. No gravid specimens have been seen, but the outer branchiz are probably used as a marsupium. tLASTENA LATA Rafinesque. “Anodonta (Lastena) lata RAFINESQUE, Ann. Gen. Sci. Brux., V, 1820, p. 317, pl. Lxxxul, figs. 17, 18. * Anodonta lata FERUSSAC, Guer. Mag., 1835, p. 25.—* CHENU, Bib. Conch., Ist ser., IJI, 1845, p. 26, pl. 111, figs. 17, 18. * Leptodea lata CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 262. *Anodon lata SOWERBY, Conch. Icon. XVII, 1867, pl. x1x, fig. 76. *Unio latus CONRAD, New F. W. Shells, 1834, p. 70.—* Say, Am. Conch., VI, 1834.— * Kuster, Conch. Cab. Unio, 1861, p. 388, pl. LXVU, fig. 5. Unio dehiscens Say, N. Harm. Diss., II, 1829, p. 308; *Am. Conch., III, 1830, pl. xx1v.—* DesHayes, An. sans Vert., 2d ed., VI, 1835, p. 554; 3d ed., II, 1839, p- 674.—* HanLEy, Test. Moll., 1842, p. 204; * Biv. Shells, 1843, p. 204, pl. xXI, fig. 36.—* CHENU, Bib. Conch., Ist ser., III, 1845, p. 32, pl. 1x, figs. 7-9.— *CaTLow and REEVE, Conch. Nom., 1845, p.58.—* SOwWERBY, Conch. Icon., XVI, 1868, pl. LxXxv, fig. 393. . * Margarita (Unio) dehiscens LEA, Syn., 1836, p. 35; 1838, p. 23. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 655 * Hemilastena dehiscens AGassiz, Arch. fiir Nat., I, 1852, p.50. * Margaron (Margaritana) dehiscens LEA, Syn., 1852, p. 43; 1870, p. 69. *Baphia dehiscens H. and A. ApAMs, Gen. Ree. Moll., II, 1857, p. 499. *Margaritana dehiscens CLESSIN, Conch. Cab. Ano., 1873, p.274, pl. xx1v, figs. 3,4.—*B. H. Wrieut, Check List, 1888.—* PasTEL, Conch. Sam., III, 1890, p. 173. * Anodonta dehiscens PATEL, Conch. Sam., III, 1890, p. 178. *+Unio oriens Lua, Tr. Am. Phil. Soc., IV, 1834, p. 73, pl. v1, fig.5; Obs., I, 1834, p. 83, pl. v1, fig. 5.—* CHENU, Ill. Conch., 1858, pl. xIv, figs. 2, 2a, 2b.— KuSTER, Conch. Cab., 1861, p. 222, pl. Lxxv, fig. 2.—* SowERBy, Conch. Icon., XVI, 1868, pl. Lx111, fig. 314. * Unio hildrethi DELESSERT, Rec. Coq. Lam., 1841, pl. xx, figs. 4a, 4b. Ohio, Cumberland, and Tennessee river systems. Genus SOLENAIA Conrad, 1868. (Type, Mycetopus emarginatus Lea.) Solenaia CoNRAD, Am. Jl. Conch., IV, 1869, p. 249. Shell greatly elongated, falcate, rather thin, narrower and rounded in front, the upper anterior portion being strongly sulcate, gaping at anterior base and behind, having a strong posterior ridge that ends in a point at the post base; beaks low; sculpture of slightly double-looped concentric ridges; epidermis rayless; hinge line narrow; teeth rudi- mentary, being mere vestiges of one or more lamellar laterals in each — valve; dorsal scars numerous, in a line under the hinge; anterior scars faint; posterior elongated; palleal line with a distinct posterior sinus. According to Fischer the foot is enormously developed for the purpose of burrowing, asin Mycetopoda. Itis probable that the mantle is closed behind into two siphons. (Group of Solenaia emarginata.) Anterior region much narrowed, drawn out in the direction of the anterior base. marked off from the rest of the shell by a faint ridge. +SOLENAIA EMARGINATA Lea. *Mycetopus emarginatus LEA, Pr. Ac. N. Sci. Phila., IV, 1860, p. 308; *J1. Ac. N. Sci. Phila., V, 1863, p. 398, pl. L, fig. 305; *Obs., X, 1863, p. 34, pl. 1, fig. 305.—SOWERBY, Conch. Icon., XVI, 1868, pl. 1, fig. 6.—* FIscHER, J]. de Conch., XXXVIII, 1890, p. 11.—* Pa TEL, Conch. Sam., III, 1890, p. 186. * Platiris (Alycetopus) emarginatus LEA. * Anodonta emarginatus CLESSIN, Conch. Cab. Ano., 1875, p. 169, pl. Lv, figs. 5, 6. * Mycetopus (Solenaia) emarginatus FiscHER, Bull. Soc. d’Autun, IV, 1891, p. 135. Siam. 656 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXI. +SOLENAIA FALCATA Higgins. * Mycetopus falcatus H1GGIns, Proc. Zool. Soc. Lond., 1868, p. 179, pl. x1v, fig. 6.'— SoweErRBy, Conch. Icon., XVI, 1868, pl. Iv, fig. 9.—*CLEssIN, Conch. Cab. Ano., 1875, p. 204, pl. LXvUl, figs. 1,2.—* FIscHER, J]. de Conch., XX XVIII, 1890, p. 8.—* P £TEL, Conch. Sam., III, 1890, p. 186. ; *Platiris (Mycetopus) falcatus LEA, Syn., 1870, p. 90. ‘Southeastern Asia. ? (Group of Solenaia soleniformis.) - Shell only slightly narrowed in front, the narrow area not distinctly marked off from the rest of the shell. +SOLENAIA SOLENIFORMIS Benson. * Anodonta soleniformis BENSON, JI. As. Soc. Bengal, V, 1836, p. 749. *Spatha soleniformis HANLEY and THEOBALD, Conch. Ind., 1876, p.5, pl. 1x, fig. 1. * Mycetopus soleniformis FiscuER, Jl. de Conch., XX XVIII, 1890, p. 94. * Margaron (Unio) bensoni LEA, Syn., 1870, p. 57. *Mycetopus bensonianus P&TeL, Conch. Sam., III, 1890, p. 186. Assam, India. t SOLENAIA OLEIVORA Heude. *Mycetopus oleivorus HEUDE, Conch. Fluv. Nank., III, 1877, pl. xx11, fig. 46; XXIII, fig. 48.—* FiscoEr, Jl. de Conch, XXXVIII, 1890, p. 11.—* P&TEL, Conch. Sam., III, 1890, p. 187. *+Mycetopus recognitus HEUDE, Conch. Fluv. Nank., III, 1877, pl. xxu, fig. 47.— * FIscHER, J]. de Conch., XX XVIII, 1890, p. 11.—* P& TEL, Conch. Sam., III, 1890, p. 187. *Mycetopus ceruleus HEUDE, Conch. Fluy. Nank., IX, 1885, pl. Lxx1, fig. 135.— * Fiscuer, Jl. de Conch., XX XVIII, 1890, p. 11.—* Part, Conch. Sam., III, 1890, p. 186. * Mycetopus armatus HEUDE, Conch. Fluy. Nank., IX, 1885, pl. Lxx, fig. 133.” *Mycetopus arcuatus FISCHER, Jl. de Conch., XXXVIII, 1890, p. 11.—P&TEL, Conch. Sam., III, 1890, p. 186. *Mycetopus viridis HEUDE, Conch. Fluv. Nank., IX, 1885, pl. Lxx1, fig. 136.— * FISCHER, Jl. de Conch., XX XVIII, 1890, p. 11.—* Pa:TEL, Conch. Sam., III, 1890, p. 187. *Mycetopus succineus HEUDE, Conch. Fluv. Nank., IX, 1885, pl. Lxx, fig. 184.— *F1scHER, Jl. de Conch., XX XVIII, 1890, p. 11.—* P&TEL, Conch. Sam., ITI, 1890, p. 187. China. 1Said to come from forest streams near Chyavetas, Upper Amazon, and to have been discovered by Mr. Bartlett. I can not believe that it is a South American species at all, but rather that it is from southeastern Asia, as it is an almost exact miniature copy of S. emarginatus Lea from that region, having its texture, and not the suft, shining appearance of the Mycetopodas. It was described with a miscella- neous lot of shells from various localities, and that given for this is, I think, erroneous. 2M, arcuatus Heude in explanation of plate. NO, 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 657 tSOLENAIA IRIDINEA Heude. * Mycetopus iridineus HEUDE, Jl. de Conch., XXII, 1874, p. 117; Conch. Fluv. Nank., J, 1875, pl. vu, fig. 19.—* Fiscurr, Jl.de Conch., XX XVIII, 1890, p. 11.— * PZTEL, Conch. Sam., III, 1890, p. 187. *Mycetopus similis HEUDE, Conch. Fluv. Nank., III, 1877, pl. xxu, fig. 50.— * FISCHER, J]. de Conch., XX XVIII, 1890, p. 11.—* Pa&TEL, Conch. Sam., III, 1890, p. 187. China. SOLENAIA RIVULARIS Heude. *Mycetopus rivularis HEUDE, Conch. Fluv. Nank., III, 1877, pl. xxu, fig. 49.— ~ FISCHER, JI. de Conch., XX XVIII, 1890, p. 11. SOLENAIA CARINATA Heude.! *Mycetopus carinatus HEUDE, Conch. Fluy. Nank., III, 1877, pl. xx1, fig. 45.—-. * FISCHER, J]. de Conch., XXXVIII, 1890, p. 11.—* PzTex, Conch. Sam., III, 1890, p. 186. China. SOLENAIA RUGATA Sowerby. *Mycetopus rugatus SOWERBY, Conch. Icon., XVI, 1868, pl. 111, fig. 7.—* SmirH, JI. de Conch., XXII, 1874, pl. rv, fig. 1.—* CLEssin, Conch. Cab. Ano., 1876, p. 295, pl. Lxvu, fig. 4.—* P#Tex, Conch. Sam., ITI, 1890, p. 187. *Platiris (Mycetopus) rugatus LEA, Syn., 1870, p. 90. Said to come from Victoria River, Austraiia. JI am a little in doubt about the locality. (Group of Solenaia triangularis.) Shell short, rounded on post base; very narrow in front. SOLENAIA TRIANGULARIS Heude. *“Mycetopus triangularis HEUDE, Conch. Fluy. Nank., IX, 1885, pl. rxx11, fig. 138.— * FISHER, Jl. de Conch., XXX VIII, 1890, p. 11.—* Pate, Conch. Sam., III, 1890, p. 187. China. Genus GONIDEA Conrad, 1857. (Type, Anodonta randalli Trask, and Anodonta feminalis Gould.) Gonidea CONRAD, Pr. Ac. Nat. Sei. Phila., I, 1857, p. 165. Shell elongated, subtriangular, much narrowed in front, wide behind, inflated, subsolid, usually with a high, sharp, posterior ridge; beaks rather sharp but not high, the sculpture consisting of a few, strong, concentric bars; epidermis rayless; hinge with a rudimentary pseudo- cardinal and lateral in each valve, though these are sometimes wanting; dorsal scars forming a row within the shallow beak cavity; muscle sears irregular; palleal line with a trace of a sinus behind; nacre lurid to purplish. 'The type and only known shell is a fossil fragment. It may be a recent species. Proc. N. M. vol. xxii——42 658 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Animal with the outer gills larger than the inner behind, narrower in front, inner free from the abdominal sac, all united to the mantle nearly to their posterior points; mantle double edged; branchial opening large, a few irregular, large and small branched papille on it; anal openiig large, with rudimentary papille; superanal opening closed a long way | below; foot very large when living. No ova were found in the branchic in numerous specimens taken at different dates and localities. + GONIDEA ANGULATA Lea. * Anodonta angulata Lua, Tr. Am. Phil. Soc., VI, 1838, p. 97, pl. xv1, fig. 52 Lee TI, 1838, p. 97, pl. Xvi, fig. 52. —*Troscumr, Arch. fiir Nat., V, 1839, Pt. Ze We 239.—* HANLEY, Test. Moll., 1842, p.222; * Biv. Shells, 1843, p. 222, pl. XXIv, fig. 15.—* GOULD, U.S. Dsl Exp., XII, 1852, p. 436.—* ConraD, Pr. Ac. Nat. Sei. Phila., VI, 1853, p. 263.—* H.and A. ApAms,-Gen. Rec. Moll., II, 1857, p. 504.—* CHENU, Man., 1859, II, p. 146, fig. 722.—* REEVE, Elem. Conch., II, 1860, pl. xxx1, fig. 180.—Ciussin, Conch. Cab. Ano., 1874, p. 159, pl. Lim, figs. 3, 4.— *B. H. Wrient, Check List, 1888.—* PaTe., Conch. Sam., III, 1890, p. 176. * Margarita (Anodonta) angulata Lea, Syn., 1838, p. 32. Mangaron (Anodonta) angulata Lia, Syn., 1852, p. 52; 1870, p. 83. * dnodon angulata CALTOW and REEVE, Conch. Nom., 1845, p. 66. *Anodon angulatus SOwERBY, Conch. Icon., XVII, 1867, pl. 111, fig. 6. *t Anodon feminalis GOULD, ee Bost. Soc. N. Hist., III, 1850, p. 293; * Otia Camnehh, a5 1862, p. 87. * Anodonta feminalis GouLD, U.S. Expl. Exp., XII, 1852, p. 436, figs. 547, 547a, 547b.—* H. and A. ADAMS, Gen. Rec. Moll., I, 1857, p. 502.--* Pa rE, Conch. Sam., I1I, 1890, p. 179. “Anodonta randalli Trask, Pr. Cal. Ac. N. Sci., I, 1855, p. 29.—* Paw rer, Conch. Sam., III, 1890, p. 177. “Anodon biangulata SOWERBY, Conch. Icon., XVII, 1869, pl. xxi, figs. 8, 8a, 8b. * Anodonta biangulata CLEssin, Conch. Cab. Ano., 1876, p. 231, pl. LXxvul, fig. 8. Central California; north to British Columbia; east to Idaho. Genus ANODONTOIDES Simpson (in Baker) 1898. (Type, Anodonta ferussaciana Lea.)! Anodontopsis Stimpson (in Baker), Tr. St. Louis Ac. Sci., VIII, 1898, p. 76; not Anodontopsis McCoy. Anodontoides SIMPSON (in Baker), Moll. Chicago, 1898, p. 72. Shell elliptical, inflated, thin, with a faint posterior ridge, sometimes constricted at the center of the base; beaks rather full, with a few Coarse, subparallel, concentric ridges, which are curved up rather 'The Avene of ans group are en nee haw of Str oes. Tort he e different beak sculpture. The character of the marsupia is also different in the two genera. In this group a limited number of ovules was found in the inner gills of one of the few gravid specimens seen, while in Anodonta only the outer gills contain ova so far as I have observed. It differs from Anodonta in the curving in of the hinge line in front of the beaks, in the beak sculpture, and in having papille on the anal open- ing. Notwithstanding the fact that I have found embryos in all four gills of a specimen of this genus, I have placed it with the Homogen:e rather than with the Tetragenz because the characters of shell and animal seem to agree better with the former than with the latter. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 659 suddenly behind, and back of these there are fine radiating ridges; epidermis smooth, shining, often rayed; hinge line slightly incurved in front of the beaks, edentulous or bearing the merest rudiments of teeth; muscle scars shallow, irregular; nacre bluish white. Animal with marsupium occupying the outer and sometimes the four leaves of the branchie; ovules more numerous in the outer, the whole pad like; gills large, inner semicircular, free from the abdominal sae, or united to it; branchial opening large, with many small papille; anal opening with well-developed papille. +ANODONTOIDES FERUSSACIANUS Lea. * Anodonta ferussaciana LEA, Tr. Am. Phil. Soc., V, 1854, p. 45, pl. vi, fig. 15; *Obs., T, 1834, p. 157, pl. v1, p. 15.—* HaNLEY, Test. Moll., 1842, p. 218:—* CaTLow and REEVE, Conch. Nom., 1845, p. 66.—ConraAD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 264.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 502.—* Mus- GROVE, Phot. Conch., 1863, pl.1, fig. 15.—* CLEssin, Conch. Cab. Ano., 1873, p: 75, pl. xx1u, fig. 4.—* B. H.Wricut, Check List, 1888.—* P&#TEL, Conch. Sam., III, 1890, p. 179. *Anodon ferussaciana Dr Kay, Zool. of N. Y., Pt. 5, 1843, p. 200, pl. xv1, fig. 230.— SOWERBY, Conch. Icon., XVII, 1867, pl. XIV, fig. 51. *Margarita (Anodonta) ferussaciana Lra, Syn., 1836, p.51; 1833, p. 30. *Margaron (Anodonta) ferussaciana LEA, Syn., 1852, p.50; 1870, p. 79. * dnodontoides ferussacianus BAKER, Moll. Chicago, Pt. 1, 1898, p. 72, pl. 111, fig. 6; Vv, fig. 2. 5s *+ Anodonta buchanensis Lea, Tr. Am. Phil. Soc., VI, 1838, p. 47, pl. x1v, fig. 43; * Obs., II, 1838, p. 47. pl. x1v, fig. 43.—* Troscue., Arch. fiir Nat., V, 1839, Pt. 2, p. 238.—* HANLEY, Test. Moll., 1842, p. 223; Biv. Shells, 1843, p. 223.—* Cat- Low and REEVE, Conch. Nom., 1845, p. 66. —* ConRAD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 263.—* H. and A. Apams, Gen. Rec. Moll, IJ, 1857, p. 503.—* Sow- ERBY, Conch. Icon., XVII, 1869, pl. xxtv, fig. 92.—*B. H. WrieutT, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 177. * Margarita (Anodonta) buchanensis LEA, Syn., 1836, p.54; 1838, p. 32. *Margaron (Anodonta) buchanensis LEA, Syn., 1852, p.51; 1870, p. 82. *t Anodonta argentea Lea, Pr. Ac. Nat. Sci. Phila., I, 1840, p. 289; *Tr. Am. Phil. Soc., VIII, 1842, p. 223, pl. x1x, fig. 41; *Obs., IIT, 1842, p. 61, pl. xix, fig. 41.— *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 502.—* CLessin, Conch. Cab. Ano., 1876, p. 218, pl. Lxxu1, figs. 3, 4.—*B. H. Wricut, Check List, 1888.— * PETEL, Conch. Sam., III, 1890, p. 176. *Margaron (Anodonta) argentea Lua, Syn., 1852, p.50; 1870, p, 79. *Strophitus argenteus CONRAD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 262. *t dnodonta ferruginea Lua, Pr. Am. Phil. Soc., I, 1840, p. 289; * Tr. Am. Phil. Soc., VIII, 1842, p. 225, pl. xix, fig. 43; *Obs., III, 1842, p. 63, pl. xix, fig. 43.— *ConraD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 264.—* H. and A. ADAms, Gen. Rec.Moll., IT, 1857, p. 502..-* MusGrove, Phot. Conch., 1863, pl. 1, fig. 2.— *CLESSIN, Conch. Cab. Ano., 1876, p. 219, pl. Lxxil, figs. 5, 6.—*B. H. WriGutT, Check List, 1888.—* P#TeL, Conch. Sam., III, 1890, p. 179. *Margaron (Anodonta) ferruginea Lra, Syn., 1852, p.50; 1870, p. 79. *tAnodonta plicuta HALDEMAN, Jl. Ac. Nat. Sci. Phila., VIII, 1842, p. 201.—* Con- RAD, Pr.Ac.Nat.Sci. Phila., VI, 1853, p.264.—* B. H. Wrient, Check List, 1888. *Margaron (Anodonta) plicata LEA, Syn., 1870, p. 79. *t Anodonta denigrata Lea, Tr. Am. Phil. Soc., X, 1852, p. 285, pl. xxv, fig. 45; *Obs., V, 1852, p. 41, pl. xxv, fig. 45.—* ConraD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 264.—* H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 502.—* CLESSIN, 660 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. Conch. Cab. Ano., 1875, p. 210, pl. uxiv, figs. 4, 5.—* B. H. Wricur, Check List, 1888.—*PaTEL, Conch. Sam., III, 1890, p. 178. *Margaron (Anodonta) denigrata Lua, Syn., 1852, p.50; 1870, p. 79. *+Anodonta oblita Lua, Tr. Am. Phil. Soc., X, 1-52, p. 290, pl. xxvii, fig. 52; *Obs., V, 1852, p. 46, pl. xx vu, fig. 52.—* ConraD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 264.—* H. and A. Apams, Gen. Rec. Moll., 1, 1857, p.502.—* CLEssIn, Conch. Cab. Ano., 1875, p. 165, pl. LIv, figs. 7, 8.—* B. H. Wricut, Check List, 1888. *Margaron (Anodonta) oblita Lea, Syn., 1852, p. 50; 1270, p. 79. * Anodon subcylindracea SOwERBY, Conch. Icon., X VII, 1867, pl. x1v, fig. 47. * Anodonta subcylindracea CLESSIN, Conch. Cab. Ano., 1873, p. 92, pl. XX VI, figs. 6, 7. t+ANODONTOIDES FERUSSACIANUS var. SUBCYLINDRACEUS Lea. *+ Anodonta subcylindracea LEA,Tr. Am. Phil. Soc., VI, 1838, p. 106, pl. xxrv, fig. 117; *Obs., II, 1838, p. 106, pl. xxrv, fig. 117.—* TrRoscHEL, Arch. fiir Nat., V, 1839, Pt. 2, p. 239.—* HANLEY, Test. Moll., 1842, p. 223; * Biv. Shells, 1843, p. 223.— * S1rmpson, Shells of N. Eng., 1851, p. 15.—* ConraD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 264.—* H. and A. ADAMS, Gen. Rec. Moll., IT, 1857, p. 503.—* Latcu- FORD, Tr. Ottawa F. N. Club, 1882,p. 55.—* B. H. Wriaut, Check List, 1888.— *P mre, Conch. Sam., III, 1890, p. 185.—* WaLTon, Moll. Monroe Co., 1892, p. 17, pl. vii, fig. 3. * Margarita (Anodonta) subcylindracea LEA, Syn., 1838, p.32. * Anodon subcylindracea DE Kay, Zool. of N.Y., Pt.5, 1843, p. 200, pl. x v1, fig. 229.— * CaTLow and REEVE, Conch. Nom., 1845, p. 68. *Margaron (Anodonta) subcylindracea LEA, Syn., 1852, p. 51; 1870, p. 82. * 4nodontoides subcylindraceus BAKER, Moll. Chicago, Pt. 1, 1898, p. 74, pl. Iv, fig. ACW Len’. ANODONTOIDES FERUSSACIANUS var. MODESTUS Lea. *+Anodonta modesta LEA, Pr. Ac. Nat. Sci. Phila., 1857, p.84; *Jl. Ac. Nat. Sci. Phila., IV, 1860, p. 364, pl. Lx1H, fig. 189; *Obs., VIII, 1860, p. 46, pl. LX1H, fig. 189.—* CLEssIN, Conch. Cab. Ano., 1874, p. 153, pl. XLIx, figs. 7, 8.—*B. H. WRIGHT, Check List, 1888.—* P-#TEL, Conch. Sam., III, 1890, p. 182. *Margaron (Anodonta) modesta LEA, Syn., 1879, p. 79. * dnodon modestus SOWERBY, Conch. Icon., XVII, 1867, pl. x, fig. 26. Mississippi drainage area generally; St..Lawrence River system; Red River of the North; Saskatchewan River; Connecticut.? The varieties are found in the St. Lawrence system. Genus PEGIAS Simpson, 1900. (Type, Margaritana fabula Lea.) Shell small, thickened in front, with a sharp posterior ridge, in front of which is a wide radial depression, ending in a basal sinus; above this ridge is another, making the shell decidedly biangulate and trun- eate behind; beak sculpture consisting of subconcentric corrugations, generally swollen on the posterior ridge; epidermis decorticated, but showing a few dark, radial rays on the base of the shell; pseudocardi- nals rather solid; laterals wanting. Animal having the marsupium empty in the specimen examined; inner gills larger in front, free from the abdominal sae, all four truncated behind; palpi large; mantle with square spots on its edge; branchial opening with a few large papille; anal opening smooth, not separated from the superanal. ‘ ‘: t So NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 661 +t PEGIAS FABULA Lea. *Margarita (Margaritana) fabula, LEA, Syn., 1856, p. 46; 1838, p. 28. *Margaritana fabula Lua, Tr. Am. Phil. Soc., VI, 1838, p. 44, pl. x1, fig. 39; *Obs., TI, 1838, p. 44, pl. x11, fig. 39.—* TROSCHEL, Arch. fiir Nat., V, 1839, Pt. 2, p. 238.—* KusTER, Conch. Cab. Unio, 1862, p. 301, pl. c, fig.3.—* B. H. Wrient, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 175. *Unio fabula HANuEy, Test. Moll., 1842, p.213; Biv. Shells, 1843, p. 213, pl. xxn, fig. 45.—* CaTLOW and REEVE, Conch. Nom., 1845, p.59.—* SowerRBy, Conch. Icon., XVI, 1868, pl. LX XVI, fig. 394. *Margaron (Margaritana) fabula Lea, Syn., 1852, p. 44; 1870, p. 70. * Micromya fabula AGassiz, Arch. fiir Nat., I, 1852, p. 47. *Strophitus fabula CONRAD, Pr. Ac. Nat. Sei. Phila., VI, 1853, p. 263. *Baphia fabula H.and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 499. *+Margaritana curreyana LEA, Pr. Ac. Nat. Sci. Phila., I, 1840, p. 288; *Tr. Am. Phil. Soc., VIII, 1842, p. 223, pl. xvitr, fig. 40; *Obs., ITI, 1842, p. 61, pl. xviuy, fig. 40.—* KuSTER, Conch. Cab. Unio, 1862, p. 300, pl. c, fig.2.—* B. H. Wricut, Check List, 1888. *Micromya curreyana AGassiZ, Arch. fiir Nat. I, 1852, p. 47. *Margaron (Margaritana) curreyana LEA, Syn., 1852, p.42; 1870, p. 68. *Strophitus curreyana CONRAD, Pr. Ac. N. Sci., Phila., VI, 1853, p. 263. *Baphia curreyana H.and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 499. *Unio curreyana SOWERBY, Conch. Icon., XVI, 1868, pl. Lx1n, fig. 319. *Unio curreyanus HANLEY, Biv. Shells, 1856, p. 386, pl. xxiv, fig. 10. *Margaritana correyana P®TEL, Conch. Sam., III, 1890, p. 173. Cumberland and Tennessee river systems. Genus ARCIDENS Simpson, 1900. (Type, Alasmodonta confragosa Say.) Shell subsolid, inflated, subrhomboid, with full, high beaks; beak sculpture very strong, consisting of irregular corrugations which fall into two loops, at the bases of which the ridges are swollen into knobs that continue out in two radiating rows on to the disk of the shell; in front of and behind the beaks are many fine, radial wrinkles, the posterior ones being zigzagged; surface of the shell covered with oblique folds and wrinkles; epidermis dark olive, shining; there are two elongated, compressed psuedocardinals in the left valve, the posterior under the beak, and curved upward, cutting off the hinge plate in the right valve, which has a single, compressed pseudocardinal in front; laterals numer- ous, short, blurred; muscle scars irregular; nacre white. Animal with the gills very large, rounded below; inner the larger, free from the abdominal sac; marsupium filling the outer gills, of a peculiar, granular texture; palpi very large, elongated, attached half way to the mantle; mantle with a thick, unspotted border; branchial opening large, papillose; anal opening with rudimentary papille.! ‘In the only gravid specimen I have seen the marsupium presented a peculiar, striated, granular structure, different from that of any Naiad I know. It was nar- rowed in the middle, and produced into a sort of lobe behind, but, though the spec- imen seemed to be a perfectly normal one, I am in doubt whether this peculiar form is constant. I do not think that this granulation is the result of a diseased condi- tion, though it may be. 662 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. - +ARCIDENS CONFRAGOSUS Say. * Alasmodonta confragosa Say, N. Harm. Diss., IT, 1829, p. 339; *Am. Conch., I, 1830, pl. xx1; IV, 1832 (cover p. 4).—* Conran, New F. W. Shells, 1834, p. 72.— * Ferussac, Guer. Mag., 1835, p. 26.—* CHENU, Bib. Conch., Ist ser., III, 1845, p. 30, pl. vii, figs. 1, la.—* ConraD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 262. * Margarita (Margaritana) confragosa LEA, Syn., 1836, p.43; 1838, p. 27. “Unio confragosa DESHAYES, An. sans Vert., 2d ed., VI, 1835, p. 552; 3d ed., II, 1837, p. 674.—* HANLEY, Test. Moll., 1842, p. 210; * Biv. Shells, 1843, p. 210, pl. XXII, fig.52.—* DesHayYEs, Tr. Elem., 1853, p. 217, pl. xxx, figs. 5-7. *Baphia confragosa H. and A. ADAMS, Gen. Rec. Moll., I, 1857, p. 500. *Margaron (Margaritana) confragosa Lea, Syn., 1852, p.42; 1870, p. 67. * Margaritana confragosa CALKINS, Pr. Ottawa Acad., 1574, p.46.—* B. H. WRIGHT, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 172. *Tnio confragosus CATLOW and REEVE, Conch. Nom., 1845, p. 57.—* SOWERBY, Conch. Icon., XVI, 1867, pl. Lx, fig. 299. Mississippi River and States adjoining it; Ohio River drainage; southwest to the Colorado River, Texas. A specimen is in the Lea collection, said to be from Enterprise, southeastern Alabama, but I am doubtful about the locality. Genus SYMPHYNOTA Lea, 1829. (Type, Symphynota compressa LEA. ) Symphynota LEA, Tr. Am. Phil. Soc., III, 1829, p. 424. ? Megadomus SwAINsoN, Tr. on Mal., 1840, p. 266. 2? Complanaria SwAINson, Tr. on Mal., 1840, p. 290. Shell elliptic rhomboid, compressed; beaks low, their sculpture con- sisting of strong bars; one pseudocardinal in the right valve and two in the left, the hinder somewhat A-shaped, cutting off the hinge plate in the right valve; laterals generally imperfect. Animal with the gills semicircular below, inner the larger, free nearly the whole length from the abdominal sac; marsupium thick, padlike, filling the outer gills; mantle strongly attached at palleal line; branchial opening papillose: anal opening without papille. Subgenus SYMPHYNOTA Lea, 1829. Shell smooth, subsolid, shining, rayed; teeth delicate; laterals com- pressed, moderately developed. SYMPHYNOTA COMPRESSA Lea. * Symphynota compressa LEA, Tr. Am. Phil. Soc., 1829, p. 450, pl. x11, fig. 22; *~Obs., I, 1834, p. 64, pl. x11, fig. 22.—* FERUssAC, Guer. Mag, 1835, p. 25. * Complanaria compressa CONRAD, Pr. Ac. Nat. Sci. Fhila., VI, 1853, p. 261. * Microcondylaea compressa P& TEL, Conch. Sam., III, 1890, p. 175. * Unio compressus CONRAD, New F.W. Shells, 1834, p. 68; *Monog., VIII, 1837, p. 71, pl. Xt, fig. 1.—*C. B. Apams, Thompson’s Hist. Vt., 1842, p. 166.—* HaNLEY, Test. Moll., 1842, p.174; * Biv. Shells, 1843, p. 174, pl. xx, fig. 39.—* Dr Kay, Zool. of N. Y., Pt. 5, 1848, p. 191, pl. xx1, fig. 245.—*CaTLow and REEVE, Conch. Nom., 1845, p. 57.—* KusTER, Conch. Cab. Unio, 1861, p. 198, pl. LXIV, figs. 3, 4.—*SowERBY, Conch. Icon., XVI, 1868, pl. LX1, fig. 303. NO. 1205. SYNOPSIS O# THE NAITADES—SIMPSON, 663 * Margarita (Unio) compressus LEA, Syn., 1836, p. 11; 1838, p. 13. * Complanaria compressus AGASSIZ, Arch. fiir. Nat., I, 1852, p. 48. * Complanaria alasmodontina STIMPSON, Shells of N. Eng., 1851, p. 14. * Unio alasmodontinas P#TEL, Conch. Sam., III, 1890, p. 144. * Margaron ( Unio) pressus LEA, Syn., 1852, p. 19; 1870, p. 29.) * Unio pressus H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 498.—* LarcHrorb, | Tr. Ottawa F. N. Club., 1882, p. 52.—*B. H. WrieuT, Check List, 1888.— *P re, Conch. Sam., III, 1890, p. 164. * Alasmodonta pressa BAkER, Tr. Ac. N.Sci. St. L., VIII, 1898, p. 76, fig. ; * Moll. Chicago, Pt. 1, 1898, p.58, pl. vi, fig. 3; xX, fig. 4. SYMPHYNOTA COMPRESSA var. PLEBIUS C. B. Adams * Unio compressus var. plebius C. B. ADAMS, F. W. and L. Shells of Vt., p. 16. Ohio and St. Lawrence drainage areas; west to Arkansas, north through Nebraska to Wisconsin; Hudson River. +SYMPHYNOTA CHARLOTTENSIS Lea. * Unio charlottiensis Lea, Pr. Ac. N. Sci. Phila:, VII, 1863, p.191;. «Jl. Ac. N. Sei. Rina Val LS66.p. o. pla ll, tes oles Obs XI IS6i, op. W2) pl. ut, hon >.—— 4 B. H. WricGutT, Check List, 1888. ~ Margaron (Unio) charlottensis LEA, Syn., 1870, p. 51. Near Charlotte, North Carolina. +SYMPHYNOTA VIRIDIS Conrad. = Unio viridis CONRAD, Monog., IV, 1836, p. 35, pl. xvi1, fig. 1;? * Pr. Ac. N. Sci. Phila., VI, 1853, p. 259.—* SowERBY, Conch. Icon., XVI, 1866, pl. xLy, fig. 244.—* B. H. Wrieu7, Check List, 1888. “Margarita (Unio) tappanianus LEA, Syn., 1856, p.39; 1838, p. 25. “Unio tappanianus LEA, Tr. Am. Phil. Soc., VI,.1838, p. 62, pl. xvul, fig.55; *Obs. II, 1838, p. 62, pl. xvil, fig.55.—* TroscuHE.L, Arch. fiir Nat., V,1839, Pt. 2, p. 236.—* HANLEY, Test. Moll., 1842, p. 209; Biv. Sheils, 1845, p. 209, pl. xx1, fig. 38.—* Dr Kay, Zool. of N. Y., Pt. 5, 1843, p. 194, pl. xx, fig. 242.—* H. and A. ADAMS, Gen. Rec. Moll., II; 1857, p. 492.—* CuENu, JI]. Conch., 1858, pl. xx, figs. 2, 2a, 2b.—* Kuster, Conch. Cab. Unio, 1862, p. 270, pl. xct, fig. 3.— “HARTMAN and MICHENER, Conch. Test., 1874, p. 89, fig. 185.—* B. H. WRIGHT, Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p. 169. ~*Margaron (Unio) tappanianus LEA, Syn., 1852, p. 39; 1870, p. 62. * Unio tappianus CATLOW and REEVE, Conch. Nom., 1845, p. 64. *+Unio hyalinus LEA, Pr. Am. Phil. Soc., IV, 1845, p.164; *Tr. Am. Phil. Soc., X, 1848, p. 69, pl. ur, fig.4; Obs., IV, 1848, p. 43, pl. 1, fig. 4.—* Conrab, Pr. Ac. N. Sci. Phila., VI, 1853, p. 250.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p- 492.—* KustEer, Conch. Cab. Unio, 1861, p. 204, pl. Lx vim, fig. 3.—* PATEL, Conch. Sam., III, 1890, p. 155. * Margaron (Unio) hyalinus Lra, Syn., 1852, p. 39; 1870, p. 62. 1 Lea changed his name compressa to pressus because the former had been used for a Unio previously by Sowerby. The restoration of the genus Symphynota makes the earlier name of Lea valid. 2Credited by Conrad and others to Rafinesque. The description of the latter of Unio viridis is not sufficiently clear to distinguish it from some of the other members of this genus, and the locality given is in error for the shell figured by Conrad, which belongs exclusively to the Atlantic drainage, and not to the Ohio River and Kentucky, localities given by Rafinesque. . 664 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. ~+Unio pertenwis LEA, Pr. Ac. N. Sci. Phila., VII, 1863, p. 193; *Jl. Ac. N. Sci. Phila., VI, 1866, p.8, pl. 1, fig.4; *Obs., XI, 1867, p. 12, pl. uy, fig. 4.—* B. H. Wrieut, Check List, 1888. *Margaron (Unio) pertenuis LEA, Syn., 1870, p. 62. Streams draining into the Atlantic from New York south to North Carolina; Monroe County, Michigan? +SYMPHYNOTA DECORATA Lea. * Unio decoratus LEA, Tr. Am. Phil. Soc., X, 1852, p. 257, pl. x1, fig.6; *Obs., V, 1852, p. 13, pl. xin, fig. 6.—* Conran, Pr. Ac. N. Sci. Phila., VI, 1853, p. 248.— *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 498.—* SowERBy, Conch. Icon., XVI, 1868, pl. xc1, fig. 496.—*B. H. Wricut, Check List, 1888.—* Parr, Conch. Sam., III, 1890, p. 150. * Margaron (Unio) decoratus LEa, Syn., 1852, p. 19; 1870, p. 29. *t Unio insolidus La, Pr. Ac. N. Sci. Phila., II, 1872, p. 159; *Jl. Ac. N. Sci. Phila., VIII, 1874, p. 40, pl. x1, fig. 37; *Obs., XIII, 1874, p. 44, pl. xi, fig. 37.—* B. H. Wricut, Check List, 1888. Virginia to South Carolina. tSYMPHYNOTA NEGLECTA Lea. Unio neglectus Lua, Desc. 12 Uniones, 1843; * Tr. Am. Phil. Soc., IX, 1846, p. 280, pl. xu, fig. 10; *Obs., IV, 1848, p. 88, p]. xu, fig. 10.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 252.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 493.—* KustTER, Conch. Cab. Unio, 1861, p. .225, pl. Lxxvi, fig. 4.—*B. H. WrieGat, Check List, 1888.—* P&TEL, Conch. Sam., III, 1890, p. 160. * Margaron (Unio) neglectus LEA, Syn., 1852, p. 33; 1870, p. 54. Northern Alabama. tSYMPHYNOTA QUADRATA Lea. * Margaritana quadrata Lua, Pr. Ac, N. Sci. Phila., V, 1861, p.41; * Jl. Ac. N. Sci. Phila., Il, 1862; p: 210, pl. xxx) fig. 279); ~Obs:, 1X: 1863; p. 32) ple xcxoxam- fig. 279.—*B. H. Wrieut, Check List, 1888.—* Parr, Conch. Sam., III, 1890, p. 173. * Margaron (Margaritana) quadrata LEA, Syn., 1870, p. 68. * Margaritana (Alasmodonta) quadrata CLESSIN, Conch. Cab. Ano., 1876, p. 273, pl. LXxx111, figs. 5, 6. Kastern Tennessee. Subgenus LASMIGONA Rafinesque, 1831. (Type, Alasmidonta costata Rafinesque. )! Shell subrhomboid, compressed, corrugated behind; beaks low, their sculpture consisting of several coarse ridges which generally fall into two slight loops, and often with radiating ridges in front and behind; epidermis shining; laterals partly developed, consisting of blurred ridges which slope diagonally downward and backward on the hinge plate; cavities of the beaks shallow; dorsal scars faint, irregular. 'The description of Alasmidonta costata of Rafinesque so clearly covers the species described three years later as Alasmodonta rugosa by Barnes that the former name must be used. NO. 1205. SYNOPSIS OF THE NAIA DES—SIMPSON. 665 Animal with the marsupium occupying the whole of the outer gills, very thick, like that of Anodonta; inner gills free all or the greater part of their length from the abdominal sac; branchial opening papillose; anal opening generally smooth or only slightly crenulate. tSYMPHYNOTA COSTATA Rafinesque. *4lasmidonta costata RAFINESQUE, Ann. Gen. Sci. Brux., V, ao p. 312, pl. LXXXU, figs. 15, 16. *Alasmodonta costata Say, Am. Conch., VI, 1834.—* CONRAD, New F. W. Shells, 1834, p. 72.—* Ferussac, Guer. Mag., 1835, p. 25 *Complanaria costata CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 261. *Alasmodonta rugosa BARNES, Am. Jl. Sci., VI, 1823, p. 278, pl. x1, fig. 21.— SHort and EaTON, Transylvania J1., 1831, p.81.—* C. B. ADAMs, Thompson’s Hist. of Vt., 1842, p. 165.—* Baker, Moll. Chicago, Pt.1, 1898, p. 57, pl. vi1, figs.1,2; viu, figs. 35, 4. *Mya rugosa EATON, Zool. Text-Book, 1826, p. 222. * Margarita (Margaritana) rugosa LEA, Syn., 1836, p.44; 1838, p. 27. *Unio rugosa HANLEY, Test. Moll., 1842, p. 211; * Biv. Shells, 1843, p. 211, pl. xx1, fig. 8. *Alasmodon rugosa DE Kay Zool. N. Y., Pt. 5, 1843, p. 196, pl. xv, fig. 226. *Complanaria rugosa STIMPSON, Shells of N. Eng., 1851, p. 14. Margaron (Margaritana) rugosa LEA, Syn., 1852, p. 42; 1870, p. 67. * Baphia rugosa H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 500. * Margaritana rugosa CALKINS, Pr. Ottawa Ac. Sci., 1874, p. 46.—* B. H.. WRIGHT, Check List, 1888.—* PTE, Conch. Sam., ITI, 1890, p. 164. * Lasmigona rugosum RAFINESQUE, Cont. Mon., Og,, 1831, p. 5. * Unio rugosus CATLOW and REEVE, Conch. Nom., 1845, p. 63.—KusreEr, Conch. Cab. Unio, 1861, p. 200, pl. LX v1, figs. 1-3.—SoWERBy, Conch. Icon., XVI, 1867, pl. Lx, fig. 302. O ienoaonta hians FERUSSAC, Guer. Mag., 1835, p. 25. Mississippi drainage generally; St. Lawrence basin; Manitoba; Hud- son River?; Columbus, Mississippi. Texas?. Subgenus PTEROSYGNA Rafinesque, 1831. (Type, Alasmodonta complanata Barnes. ) Shell large, ovate-rhomboid, inflated in post basal region; beaks much compressed, their sculpture sharply and strongly doubly looped; epi- dermis dark, scarcely rayed; teeth very heavy. Animal with an extremely thick marsupium; palpilarge; mantle with small crenulations on lower border; branchial opening large; anal open- ing small, both slightly papillose. +SYMPHYNOTA COMPLANATA Barnes. * Alasmodonta complanata BARNES, Am. Jl. Sci., VI, 1823, p. 278, pl. x11I, fig. 21.— * HILDRETH, Am. JI. Sci., XIV, 1828, p. 289.—* ConrapD, New F. W. Shells, 1834, p. 72.—* Say, Am. Conch., VI, 1834.—* Baker, Moll. Chicago, Pt. 1, 1898, p. 60, pl. vil, figs. 1,2; 1x, figs. 1-4. * Mya complanata EATON, Zool. Text-Book, 1826, p. 222. *Symphynota complanata Lea, Tr. Am. Phil. Soc., III, 1830, p.448.—-* SHorT and Eaton, Transylvania J1., 1831, p.80.—* La, Obs., I, 1834, p. 62.—FERUSSAC, Guer. Mag., 1835, p. 25. 666 PROCEEDINGS OF THE NATIONAL MUSEUM. — VOL. XX. “Margarita (Margaritana) complanata Lea, Syn., 1836, p. 43; 1838, p. 26. *Unio complanata HANLEY, Test. Moll., 1842, p.210; * Biv. Shells, 1848, p. 210, pl. SORT, 1p, : *Complanaria complanata CONRAD, Pr. Ac. N. Sei. Phila., VI, 1853, p. 261. *Baphia complanata H.and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 500. * Margaratina complanata CALKINS, Pr. Ottawa Acad., 1874, p. 46.—* B. H.Wricut, Check List, 1888.—* Patri, Conch. Sam., III, 1890, p.172.- *Alasmodon complanatus SOWERBY, Conch. Man., 1842, p. 61, fig. 140.—* CaTLow and REEVE, Conch. Nom., 1845, p.57.—* KusTrER, Conch. Cab. Unio, 1861, p. 199, pl. LY, ea * Sown RBY, Conch. Icon., XVI, 1866, pl. L, fig. 266. Complanaria gigas SowERBY, Conch. Man., 1859, fe i41, *; 1842, p. 115, fig. 141. 3 *? Megadomus gigas SWAINSON, Tr. on Mal., 1840, pp. 265, 378, +SYMPHYNOTA COMPLANATA var. KATHERINZ Lea. Unio katherine Lea, Syn., 1838, p.55;' Tr. Am. Phil. Soc., VI, 1839, p. 143.—* Tro- SCHEL, Arch. fiir Nat., V, 1839, Il, p. 237. Upper Mississippi drainage, as far south as Arkansas on the west; Ohio River system; upper St. Lawrence and its tributaries; north into the Mackenzie River. Genus ALASMIDONTA Say, 1818. (Type, Monodonta undulata Say.)? Monodonta Say, Nich. Ene., II, 1816. Alasmidonta Say, Jl. Ac. N. Sci. Phila., I, 1818, p. 459. Alasmodonta Say, Nich. Enc., 38d ed., IV, 1819. Alasmodon SWAINSON, Tr. on Mal., 1840, p. 382. Uniopsis SWAINSON, Tr. on Mal., 1840, p. 382. Shell generally rhomboid, inflated, with a well-developed posterior ridge, which ends in a point behind when it is single or a biangulation when double; beaks full and high, with coarse, concentric or slightly doubly-looped bars; epidermis rayed, shining; hinge with two pseudo- cardinals in the left valve and one in the right; laterals wanting or imperfect; cavity of the beaks deep; dorsal scars under the hinge plate; nacre bluish. Animal with the marsupium occupying the entire outer gills; gills rounded below, inner much the larger, united to the abdominal sac, or free; mantle generally having square spots on the posterior border; branchial opening papillose; anal opening smooth or crenulate. Subgenus ALASMIDONTA Say, 1818. (Type, Monodonta undulata Say.) Shell ovate-rhomboid, solid, inflated, shining, with very strong, gen- erally concentric beak acu ane paendocardinals solid SUL some- ''This is Pronauin ie small, Seon: Thence form of this species, which appears very different from the type. 2Changed by Say afterwards to Alasmidonta undulata as the name Monodonta was preoccupied. For some reason Say later on called his genus dlasmodonta. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 667 what radiately ridged; laterals short, very imperfect, or wanting; beak cavities deep, compressed. Animal with inner gills wider than the outer throughout; palpi long; marsupium loose and flabby, and having ova scattered throughout it in the only gravid specimen seen. +t ALASMIDONTA UNDULATA Say. Monodonta undulata Say, Nich. Ene.; 1816, pl. 111, fig. 3. = flasmidonta undulata Say, Jl. Acad. N. Sci. Phila., I, 1818, p. 460. * Alasmodonta undulata Say, Nich. Enc., IV, 1819, pl. 1, fig. 3.—* Conrap, New F. W. Shells, 1834, p. 73.—* Frerussac, Guer. Mag., 1835, p. 26.—*C. B. Apams, F. W. and L. S. of Vt., 1842, p. 15. *Alasmodon undulata SWAINSON, Tr. on Mal., 1840, p. 288, fig. 61.—* GOULD, Iny. Mass., 1841, p. 115, fig. 76.—* De Kay, Zool. of N. Y., Pt. 5, 1843, p. 198, pl. xv, fig. 227. * Margarita (Margaritana) undulata Lea, Syn., 1836, p. 44; 1838, p. 27. *Unio undulata HANLEY, Test. Moll., 1842, p. 211.—* Biv. Shells, 1843, p. 211. *Margaritana undulata Kuster, Conch. Cab. Unio, 1862, p. 298, pl. Xcrx, fig. 4.— * GOULD, Inv. Mass., 1870, p. 176, fig. 478.—* HARTMAN and MICHENER, Conch. Cest., 1874, p. 92, fig. 190.—* LatcurorD, Tr. Ottawa F. N. Cl., 1882, p. 54.—* H. CARPENTER, Naut., IV, 1890, p. 47.—* B. H. Wricut, Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p. 174. *Margaron (Margaritana) undulata LEA, Syn., 1852, p.42; 1870, p. 68. *Mya undulata Woop, Ind. Test. Rev., 1856, p. 199, pl. 1, supp., fig. 5. *Baphia undulata H.and A. ADAms, Gen. Ree. Moll., I, 1857, p. 499. * Unio undulatus CATLOW and REEVE#, Conch. Nom., 1845, p. 6d. *Strophitus undulatus STiMPSON, Shells of New Eng., 1851, p. 15. *?Unio glabratus SowuRBY, Rec. and Foss. Shells, XVI, 1823, fig. Alasmodonta sculptilis Say, N. Harmony Diss., II, 1829, p. 339.—FERussaAc, Guer. Mag., 1835, p. 26.—L. W. Say, Terr. and Fluv. Shells, 1840, p.9. *Strophitus sculptilis STIMPSON, Shells of New Eng., 1851, p. 15. -* Unio hians VALENCIENNES Ree. Obs. Zool., II, 1833, p. 235, pl. tv, figs. 2a, 2b. *Uniopsis radiata SWAINSON, Tr.on Mal., 1840, p. 289, fig. 62. *Uniopsis mytiloides SWAINSON, Tr. on Mal., 1840, p. 382, fig. 62. *? Unio swainsoni SOWERBY, Conch. Icon., XVI, 1868, pl. LXXVI, fig. 396. *Margaron (Margaritana) swainsoni Lea, Syn., 1870, p. 30. Lower St. Lawrence drainage; southward to North Carolina. Subgenus PRESSODON-A Simpson, 1900. (Type, Unio calceolus Lea. ') Shell decidedly rhomboid, surface generally painted with unbroken rays; beak sculpture slightly corrugated; teeth compressed. Animal with a thick, smooth, pad-like marsupium. (Group of Alasmidonta calceola.) Shell small, subsolid, rhomboid, inflated, rayed but not shining; beak sculpture varying from strong concentric bars to irregular corru- _ gations, sometimes faintly doubly looped, and with fine radiating 1The names Hemiodon, Hemiodonta, and Hemidon were applied by Swainson to this group, but he used the first name previously for a division of the Helicide. It is better to apply a new name. 668 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. ridges in front and behind; pseudocardinals rather solid; laterals very faint; marsupium occupying the whole of the outer gills, thick, pad- like; inner gills wholly or partly free from the abdominal sac; mantle bordered with square, black spots. ,ALASMIDONTA CALCEOLA Lea. *Unio calceolus LEA, Tr. Am. Phil. Soc., III, 1830, p. 265, pl. 1, fig. 1; * Obs., I, 1834, p. 7, pl. 111, fig. 1.—* Frrussac, Guer. Mag., 1835, p. 26.—* CHENU, III. Conch., 1858, pl. vuil, figs. 2, 2a, 2c.—* KusTER, Conch. Cab. Unio, 1861, p. 187, pl. L1x, fig. 3. *Strophitus calccolus CONRAD, Pr. Ac. N. Sci., Phila., VI, 1853, p. 262. *Unio calceola DESHAYES, An. sans Vert., 2d ed., VI, 1835, p. 546; 3d ed., II, 1889, p. 672.—* HANLEY, Test. Moll., 1842, p. 212; * Biv. Shells, 1848, p. 212, pl. xxm, fig. 29.—* CaTLow and REEVE, Conch. Nom., 1845, p.56.—* SowERBy, Conch. Icon., XVI, 1868, pl. LXX vi, fig. 410. *Margarita (Margaritana) calccola LEA, Syn., 1836, p. 45; 1838, p. 27. *Margaron (Margaritana) calceola Lma, Syn., 1852, p. 43; 1870, p. 68. \ *Margaritana calceola KUSTER, Conch. Cab. Unio, 1862, p. 299, pl. xcrx, fig. 6.— *B. H. Wricat, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 172. *Baphia calceola H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 500. * dlasmodonta truncata CONRAD, New F. W. Shells, 1834, p. 73. *Margarita (Margaritana) deltoidea LEA, Syn., 1856, p. 44; 1838, p. 27. *Margaritana deltoidea Lea, Tr. Am. Phil. Soc., VI, 1838, p. 43, pl. x11; fig. 38; Obs., II, 1838, p. 43, pl. x11, fig. 38.—* TROosCHEL, Arch. fiir Nat.,V, 1839, II, p. 238.—* CHENU, Man., 1859, II, p. 144, fig. 711.—* KusTER, Conch. Cab., 1862, p- 299, pl. xc1x, fig. 5.—* CaLKINs, Pr. Ottawa Ac. Sci., 1874, p. 46.—*B. H. WRIGHT, Check List, 1888.—* PaTreL, Conch, Sam., III, 1890, p. 173. *Unio deltoidea HANLEY, Test. Moll., 1842, p. 211; * Biv. Shells, 1843, p. 211, pl. Xx, fig. 50. *Margaron (Margaritana) deltoidea LEA, Syn., 1852, p. 42, 1870, p. 67. * Strophitus deltoidea CONRAD, Pr. Ac. N. Sci., Phila., VI, 1853, p. 263. *Baphia deltoidea H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 499. *Alasmodonta deltoidea BAKER, Moll. Chicago, Pt. 1, 1898, p. 63, pl. v1, fig. 2; vu, fig. 4. *Unio deltoideus CATLOW and REEVE, Conch. Nom., 1845, p. 58.—* SOWERBY, Conch. Icon., XVI, 1868, pl. LXXv1I, fig. 395. ! Upper Mississippi drainage; Ohio, Cumberland, and Tennessee rivers; Lower and Middle St. Lawrence systems. +ALASMIDONTA MINOR Lea. *Margaritana minor Lea, Pr. Am. Phil. Soc., IV, 1845, p. 166; Tr. Am. Phil. Soc., X, 1848, p. 82, pl. vill, fig. 26; *Obs., IV, 1848, p. 56, pl. vil, fig. 26.—* CHENU, Man., 1859, II, p. 144, fig. 713.—* B. H. Wrieut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 173. *Strophitus minor CONRAD, Pr. Ac. N. Sci., Phila., VI, 1853, p. 263. *Margaron (Margaritana) minor LEA, Syn., 1852, p. 42; 1870, p. 67. *Baphia minor H. and A. ADAMs, Gen. Kee. Moll., II, 1857, p. 499. Tennessee and Cumberland river systems. (Group of Alasmidonta heterodon.) Shell small, rather thin, rhomboid; beak sculpture very strong, con- sisting of concentric ridges or irregular corrugations, often slightly © NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 669 doubly looped and swollen on the well-developed posterior ridge; sur- face rayed; pseudocardinals compressed, reflexed; laterals single, double, or triple in each valve. Animal with branchial opening having a few coarse papille; anal opening smooth, or with very fine crenulations. +ALASMIDONTA HETERODON Lea. *Unio heterodon LEA, Tr. Am. Phil. Soc., III, 1830, p. 428, pl. vim, fig. 11; * Obs , I, 1834, p. 42, pl. vu, fig. 11.—* Conrap, New F. W. Shells, 1834, p. 69.— * FERUSSAC, Guer. Mag., 1835, p. 26.—* DESHAYES, An. sans Vert., 2d ed., VI, 1835, p. 548; 3d ed., II, 1839, p. 672.—*CoNnRaAD, Monog., X, 1838, p. 90, pl. XLIX, fig. 3.—* HANLEY, Test. Moll., 1842, p. 183; Biv. Shells, 1843, p. 183, pl. XXxI, fig. 42.—* CaTLow and REEVE, Conch. Nom., 1845, p.59.—* Conrab, Pr. Ac. N. Sei., Phila., VI, 1853, p. 250.—* CHENU, Ill. Conch., 1858, pl. xv1, figs. 2, 2a, 2b.—* H. and A. ADAMs, Gen. Rec. Moll., If, 1857, p. 495.— * Kus- TER, Conch. Cab., 1861, p. 192, pl. LXI, fig. 2.—* SowerRBy, Conch. Icon., XVI, 1866, pl. xxxv, fig. 184.—* HARTMAN and MICHENER, Conch. Cest., 1874, p. 91, fig. 188.—* B. H. Wrieut, Check List, 1888.—* P& TEL, Conch. Sam., III, 1890, p. 155. *Margarita (Unio) heterodon Lra, Syn., 1836, p. 18; 1838, p. 16. *Margaron (Unio) heterodon LEA, Syn., 1852, p. 24; 1870, p. 36. Northern New England to Virginia. ALASMIDONTA DIVERSA Conrad. *Unio diversus CONRAD, Am. Jl. Sci., XXI, 1856, p. 172 (fig. in outline).—B. H. WriGuHtT, Check List, 1888.1 Alabama. (Group of Alasmidonta collina.) Shell rhomboid, subsolid, with beak sculpture consisting of strong, concentric bars, sometimes slightly doubly looped and swollen on the low, posterior ridge; often with one or more small spines on the disk in front of the posterior ridge; epidermis brown, rayless or feebly rayed; rest marks well defined; teeth rather compressed; laterals lamellar. Animal unknown. + ALASMIDONTA COLLINA Conrad. *Unio collinus CONRAD, Monog., VIII, 1837, p. 65, pl. xxxv1, fig. 2; XII, 1840, p. 109, pl. Lx, fig. 3.—* TROSCHEL, Arch. fiir Nat., IV, 1838, p. 287.—* ConRAD, Pr. Ac. N. Sei., Phila., VI, 1853, p. 247.—* HaNLEY, Biv. Shells, 1856, p. 382, pl. xx, fig. 57.—* KusTEer, Conch. Cab. Unio, 1861, p. 188, pl. rx, fig. 5.— *SOwWERBY, Conch. Icon., XVI, 1866, pl. xLIx, fig. 263.—* B. H. WRIGHT, Check List, 1888.—* PmrerL, Conch. Sam., III, 1890, p. 148. *Margaron (Unio) collinus LEa, Syn., 1852, p. 233 1870, p. 35. North Carolina and Virginia. 1Conrad says this has a remarkable resemblance to Unio heterodon, but is shorter. 670 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. X XII. (Group of Alasmidonta holstonia.) Shell subsolid, beak sculpture rather strong, decidedly doubly looped, surface brownish, slightly rayed; pseudocardinals delicate; laterals nearly or quite wanting. Animal like that of A. calceola. + ALASMIDONTA HOLSTONIA Lea. * Margaritana holstonia LEA, Tr. Am. Phil. Soc., VI, 1838, p. 42, pl. x1, fig. 37; *Obs., II, 1838, p. 42, pl. x11, fig. 37.—* TROSCHEL, Arch. fiir Nat., V, 1839, Pt. 2, p. 238.—* B. H. Wrieut, Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p. 173. * Margarita (Margaritana) holstonia LEA, Syn. , 1836, p. 46; 1858, p. 28. | Legere (Margaritana) holstonia iB Syn., 1852, p. 44; 1870, p. 70. * Strophitus holstonta CONRAD, Pr. Ac. N. Sci. ee. VI, 1853, p. 263. * Baphia holstonia H.and A, ADAMS, Gen. Rec. Moll., TI, 1857, p. 499. * Unio holstonianus HANLEY, Biv. Shells, 1843, p. 213, pl. xx11, fig. 44.—* CaTLOW and REEVE, Conch. Nom., 1845, p. 60.—*SOWERBY, Conch. Icon., XVI, 1868, pl. LXXVI, fig. 398. * Margaritana holstoniana KusTER, Conch. Cab. Unio, 1862, p. 302, pl. c, fig. 4. *2 Unio striatus SOWERBY, Conch. Icon., XVI, 1868, pl. LXxviu, fig. 407. Tennessee River system; headwaters of the Coosa River. + ALASMIDONTA GEORGIANA Lea.! 4 *Margaritana etowahensis LEA, Pr. Ac. Nat. Sci. Phila., II, 1858, p. 188; *J1. Ac. Nat. Sci. Phila., [V, 1859, p. 227, pl. xx x1, fig. 110; *Obs., VII, 1859, p. 45, pl. XXXI, fig. 110.—* B. H. Wrieut, Check List, 1888. *Margaritana (Alasmodonta) etowahensis CLESSIN, Conch. Cab. Anro., 1875, p. 270, JODIE sepreoxoxa eg ralays aL *Margaritana etowahensis Pa&stTEL, Conch. Sam., III, 1890, p. 173. *“Margaritana georgiana LEA, Pr. Ac. Nat. Sci. ee IIT, 1859, p. 280.—B. H. WRIGHT, Check List, 1888. *Margaron (Margaritana) georgiana LBA, Syn., 1870, p. 68. * Alasmodonta impressa ANTHONY, Am. Jl. Conch., I, 1865, -p. 157, pl. X11, fig. 4. Tennessee; Etowah River, Georgia. Subgenus RUGIFERA Simpson, 1900. (Type, Alasmodonta marginata Say.) Shell elongated, rhomboid, inflated, surface brilliantly painted with radiations, which often break into a dappled or splashed pattern of color; posterior slope slightly corrugated; teeth very imperfect; lat- erals wanting. Animal with a thick, smooth, pad like marsupium. Mantle with square spots behind. +ALASMIDONTA MARGINATA Say . { *Alasmodonta marginata Say, Nich. Ene., 1819, No.1; Am. Conch., VI, 1834.— * CONRAD, New F. W. Shells, 1834, p. 72.—* FERussac, Guer. Mag., 1835, p. 25.—* STIMPSON, Shells of N. Eng., 1851, p.15.—* Acassiz, Arch. fiir. Nat., I, 1852, p. 46.—* ConrRAD, Pr. Ac. Nat. Sci. Phila., VI, 1853, » 262. ! iniree Paine Mane garitana Powohenes by Dr. ee but as that name had previously been used by Conrad its author changed it to georgiana. a NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. al “dAlasmidonta marginata RAFINESQUE, An. Gen. Sci. Brux., V, 1820, p. 317. ~ Margarita (Margaritana) marginata L&a, Syn., 1836, p. 43; 1838, p. 27 * Alasmodon marginata GOULD, Inv. Mass., 1841, p. 116, fig. 77.—* Dr Kay, Zool. of N. Y., Pt. 5, 1843, p. 196, pl. xiv, fig. 225 ai * Unio marginata HANLEY, Test. Moll., 1842, p.211; * Biv. Shells, 1843, p. 211, pl. SORT HON 2a. * Anodonta marginata C. B. ADAMS, Thompson’s Hist. Vt., 1842, p. 164; *F. W. and L.S. of Vt., 1842, p. 14.—*Srmmpson, Shells of N. De, W5L; pills. * Margaron (Margaritana) marginata LEA, Syn., 1852, p. 42; 1870, p. 67. * Baphia marginata H. and A. ADAMS, Gen. Rec. Mol1., II, 1857, p. 500. *Margaritana marginata GOULD, Inv. of Mass., 1870, p. 177, fig. 479. —HaARTMAN and MICHENER, Conch. Cest., 1874, p. 93, fig. 191.—* LaTcHrorD, Tr. Ottawa F.N. Club, 1882, p.54.—* B. H.Wricut, Check List, 1888.—* H. CARPENTER, Naut., TV, 1890, p. 46.—* P® TEL, Conch. Sam., III, 1890, p. 173. *Unio marginatus CATLOW and REEVE, Conch. Nom., 1845, p. 61. * Unio varicosa LAMARCK, An. sans Vert., VI, 1819, p. 78.—* DEsHayeEs, An. sans Vert., 2d ed., VI, 1835, p. 543; 3d ed., II, 1839, p. 671. * Unio cariosa LAMARCK, An. sans Vert., VI, 1819, p. 80. * Alasmodon corrugata DE Kay, Zool. of N. Y., Pt.5, 1843, p.198, pl. xxiv, fig. 259. * Mua rugulosa Woon, Ind. Test., 3d ed., 1856, p. 199, pl. 1, supp. fig. 7. Lower St. Lawrence; southward in streams draining into the Atlantic to South Carolina. +ALASMIDONTA TRUNCATA B. H. Wright.! * Alasmodonta truncata CONRAD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 262. *Margaritana marginata KusTER, Conch. Cab. Unio, 1862, p. 297, pl. xcIx, fig. 3.—* CALKINS, Pr. Ottawa Acad., 1874, p. 46. *Alasmodonta marginata BakER, Moll. Chicago, Pt. 1, 1898, p. 62. pl. tv, fig. 4; SYA Oe ai(e= XOX Tether *Margaritana marginata var. truncata B. H. WRIGHT, Naut., XI, 1898, p. 124 * Unio marginatus SOWERBY, Conch. Icon., XVI, 1866, pl. LI, fig. 267. Upper Mississippi drainage; Ohio, Cumberland, and Tennessee river systems; Michigan; Upper St. Lawrence drainage. +t ALASMIDONTA RAVENELIANA Lea. *Margaritana raveneliana LEA, Tr. Am. Phil. Soc., V, 1834, p. 106, pl. xvur, fig. 50; *Obs., I, 1834, p. 218, pl. xvi, fig. 50.—* KusTeR, Conch. Cab. Unio, 1862, p 297, pl. xcrx, fig. 2.—* B. H. WricHT, Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p. 173. : *Alasmodonta raveneliana FERUSSAC, Guer. Mag., 1835, p. 26. *Margarita (Margaritana) raveneliana LEA, Syn., 1836, p. 44; 1838, p. 27 *Margaron (Margaritana) raveneliana LEA, Syn., 1852, p. 42; 1870. p. 68. *Baphia raveneliana H,. and A. ADAMS, Gen. Rec. Moll, II, 1857, p. 500. * Strophitus ravenelianus CONRAD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 263. *Unio swananoensis HANLEY, Test. Moll., 1842, p. 211; Biv. Shells, 1843, p. 211, pl. XxII1, sei 39.—CATLOW and "Sena Conch. Nom. ee p. 64. 'Say’smanuscript. I believe this to be specifically different from the Seog thin- ner, less inflated, biangulate 4. marginata. The latter is confined to the Atlantic drainage; the former belongs tothe Mississippi Valley, but has migrated into the St. Lawrence basin. No description was published of this form that I know of until that of Mr. Wright appeared. 672 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL. Tennessee and Cumberland river systems. Unfigured species. Margaritana etowahensis CONRAD, Pr. Ac. Nat. Sci. Phila., 1V, 1849, p. 154.! Etowah River, Georgia. Subgenus BULLELLA Simpson, 1900. (Type, Margaritana arcula Lea.) Shell thin, greatly inflated, somewhat triangular, with a high, sharp posterior ridge; beaks very full, having exceedingly strong, concen- tric sculpture, extending well on to the disk; pseudocardinals reflexed, compressed. Animal with the gills large, nearly semicircular below, inner the larger, united the whole length to the abdominal sac; mantle border with square spots.’ tALASMIDONTA ARCULA Lea. * Margarita (Margaritana) arcula LEA, Syn., 1836, p.43; 1838, p. 27. * Margaritana arcula Lea, Tr. Am. Phil. Soc., VI, 1838, p. 71, pl. xx, fig. 69; *Obs., II, 1838, p. 71, pl. x x11, fig. 69.—* TROSCHEL, Arch. fiir. Nat., V, 1893, Pt. 2, p. 238.—* CHENU, Man., 1859, II, p. 144, fig. 712.—* B. H. Wriaut, Check List, 1888.—* PmrTEL, Conch. Sam., III, 1890, p. 172 * Unio arcula HANLEY, Test. Moll., 1842, p. 210; Biv. Shells, 1843, p. 210, pl. xx11, fig. 49.—* CaATLOW and REEVE, Conch. Nom., 1845, p. 56.—* SOWERBY, Conch. Icon., XVI, 1866, pl. XLVIII, fig. 259. * Margaron (Margaritana) arcula Lka, Syn., 1852, p.42; 1870, p. 67. * Alasmodonta arcula CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 262. * Baphia arcula H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 500. * Margaritana (Alasmodonta) arcula CLESSIN, Conch. Cab. Ano., 1876, p. 272, pl. LXXXIU, figs. 7,8. Altamaha River, Georgia. tALASMIDONTA TRIANGULATA Lea. *Margaritana triangulata Lma, Pr. Ac. N. Sei. Phila., II, 1858, p. 188; * Jl. Ac. N. Sci. Phila., IV, 1859, p. 228, pl. xxxu1, fig. 111; * Obs., VII, 1859, p. 46, pl. XXXU, fig. 111.—* KusrEr, Conch. Cab. Unio, 1862, p. 303, pl. c, fig. 6.—* B. H. WRIGHT, Check List, 1888. * Unio triangulata SOwERBY, Conch. Icon., XVI, 1868, pl. LXxx, fig. 414. *Margaron, (Margaritana) triangulata LEA, Syn., 1870, p. 68. *Margaritana triangulatus PasTEL, Conch., Sam., III, 1890, p. 174. South Carolina and Georgia. The following species are unknown to me: * Alasmodon (Decurambis) atropurpureum RAFINESQUE, Cont. Monog., 1831, p. 5. *dAlasmodon (Decurambis) scriptum RAFINESQUE, Cont. Monog., 1851, p. 5. 1 Allied to ravenelianus LEA, according to Conrad. 2In the only gravid specimen seen the outer gills were curiously wrinkled and folded longitudinally, though the inner gills were plain. If this were a normal character it would entitle the species to generic rank, but I can not feel certain that itis. A. triangulata seems to stand between this and the ordinary Alasmidontas. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 673 “Alasmodon (Lasmigona) viridis RAFINESQUE, Cont. Monog., 1831, p. 5. *Alasmodon (Sulcataria) papyraceum RAFINESQUE, Cont. Monog., 1831, p. 5. * Alasmodon (Sulcataria) badium RAFINESQUE, Cont. Monog., 1831, p. 5. *Alasmodon (Amblamodon) hians RAFINESQUE, Cont. Monog., 1831, p. 5. *Margaritana columbensis L¥a,' Pr. Ac. N. Sci. Phila., XI, 1867, p. 81. Genus HEMILASTENA (Agassiz, 1852) Simpson. (Type, dAlasmodonta ambigua Say.)? Shell small, elongate elliptical, rounded in front and behind, often slightly incurved at the central base; beaks rather sharp, but not full; sculpture consisting of fine, parallel ridges which are looped up in the middle, and open behind; epidermis brownish, rayless; teeth imperfect, a single irregular, compressed tooth in each valve; that of the left under the beak, that of the right in front of it; laterals nearly or quite wanting; anterior end of the shell much thickened; anterior muscle scars united; posterior faint; nacre dull whitish. Animal with the marsupium occupying the whole of the outer branchic ; ovules very large; ovisacs not separated by a sulcus; inner gills the larger in front, free from the abdominal sac part of the way, all four united to the mantle to the posterior end; mantle with a double border; branchial opening large, with many crowded papille; anal opening smooth; animal whitish. +tHEMILASTENA AMBIGUA Say. “Alasmodonta ambigua Say, Jl. Ac. N. Sci. Phila., V, 1825, p. 131,—* FeRussac, Guer. Mag., 1835, p. 26. “Margaritana ambigua KusTER, Conch. Cab. Unio, 1862, p. 300, pl. xcr1x, fig. 7.— “PATEL, Conch. Sam., III, 1890, p. 173. “+t Unio hildrethianus Lua, Tr. Am. Phil. Soc., V, 1834, p. 36, pl. 111, fig. 8; * Obs., I, 1834, p. 148, pl. 101, fig. 8.—* HANLEY, Test. Moll., 1842, p. 196; * Biv. Shells, 1843, p. 196, pl. xxi, fig. 38.—* CATLOW and REEVE, Conch. Nom., 1845, p. 59.—* KusTER, Conch. Cab. Unio, 1861, p. 206, pl. Lx vir, fig. 8.—” SOWERBY, Conch. Icon., XVI, 1866, pl. xxxv1, fig. 192.—* BakER, Moll. Chicago, Pt. 1, TSI; Do es Tonle Aves wilfere 21 * Margarita (Unio) hildrethianus LEA, Syn., 1836, p. 28; 1838, p. 20. “ Margaron (Margaritana) hildrethianus Lea, Syn., 1852, p. 43; 1870, p. 69. * Strophitus hildrethiana CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 263. * Baphia hildrethiana H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 499. * Margaritana hildrethiana B. H. Wricut, Check List, 1888.—* PasreL, Conch. Sam., IIT, 1890, p. 173. * Alasmodonta dubia FERUSSAC, Guer. Mag., 1835, p. 26. Ohio River system; north to Michigan; west to Iowa; south to Arkansas; east to Tennessee. 1Dr. Tea does not mention this in his Synopsis. °This species, the only member of the group, differs from Margaritana in the beak sculpture, the thickening of the anterior end of the shell, in the want of muscle scars in the shell cavities, in the color of the animal, and in having the gills united to the mantle posteriorly to their ends, and the shell is not that of a Unio, as it differs in the beak sculpture and the teeth. I regret that Lea’s well-known name must be displaced for the obscure one of Say, who undoubtedly had this shell before him when he described his Alasmodonta ambigua. Proc. N. M. vol. xxii 43 674 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Genus MARGARITANA Sehumacher, 1817. (Type, Iya margaritifera Linneus. ) Baphiw MEUSCHEN, Mus. Gevers, 1787, p. 472. Unio RETZIus, part, Diss. Ilist. Nov. Test. Gen., 1788, p. 16. Unio OKEN, Lehrbuch der Nat., 1815, p. 236. Margaritana SCHUMACHER, Essai Nouv. Syst., 1817, p. 137. Damalis (LEACH manuscript) Gray, Pr. Zool. Soc. Lond., 1847, p. 196. Baphia V1. and A. ApAMS, Gen. Ree. Moll., II, 1857, p. 499.' . Shell elongated, usually arcuate, rounded in front, almost lacking a posterior ridge; beaks rather low, the sculpture consisting of a few coarse, parallel ridges, which follow the growth lines; epidermis con- centrically striate, brownish or blackish; hinge teeth generally imper- fect or not fully developed; two more or less perfect pseudocardinals in the left valve, and one in the right, often reduced to mere tubercles; behind these the hinge plate is narrow and rounded for some distance; laterals short, usually imperfect or wholly wanting; cavity of the beaks rather shallow; muscle sears large, those of the anterior roughened, posterior elliptical; nacre generally more or less covered inside the pal- leal line with small muscle scars. Animal with very long gills, inner wider in front, free for the greater part of their length from the abdominal sac, the two pairs united to their posterior ends, which project backward for some distance unconnected with the mantle; palpi very large, faleate, united half way posteriorly ; branchial opening having crowded, often arborescent papillae arranged in folds; anal opening smooth or crenulate; superanal opening not closed below; marsupium occupying the entire outer gills.” I’oot and abdomen small; whole animal dark colored. +MARGARITANA MARGARITIFERA Linnzus. Mya margaritifera ListER, Hist. Anim. Ang. App., 1685, pl. 1, fig. 1.—Hist. Conch., 1685, pl. CXLIx, fig. 4.—* LINN.ZUS, Systema. Nat., 10th ed., I, 1758, p. 671.—* Da Costa, Hist. Nat. Brit., 1778, p. 225, pl. xv, fig. 33.— * GMELIN, Syst. Nat., 13th ed., 1792, p.3219.°>—* LINN &US, Fauna Suecica, 1761, p- 2130.—Kwnorr, Vergn., IV, 1769, pl. xxv, fig. 2.—* MULLER, Vermes, 1774, p. 210.—PENNANT, Brit. Zool., IV, 1777, pl. xxi, fig. 18.—* Da Cosra, Hist. Nat. Brit., 1778, p. 225, pl. xv, fig. 3.—* SCHROTER, Fluss Conch., 1779, p. 168, pl.iy, fig. 1.—* Born, Test. Mus. Vind., 1780, p. 21.—* ScuROTER, Ein. Conch., 1783, II, p. 606.—* Donovan, Brit. Shells, ITI, 1801, pl. Lx xt1.—* Monraau, Test. Brit., 1803, p. 38.—* TurToN, Brit. Fauna, 1807, p. 146.—* Maron and 'The name Baphiv Meuschen has precedence, but was never described ; it was applied to amiscellaneous lot of bivalves, and is in the plural number. Retzius’ first species in Unio, the type of a section without laterals, is the U. margaritifer, but in 1792 Bruguiére in Choix de Mémoires, I, p. 106, fully and carerully redefined the genus Unio, restricting it to species with cardinal and lateral teeth. 2 According to Van Wahl. I have examined a great many animals taken at different seasons, but have never seen one gravid. 3 Refers to Conchylien Cabinet VI, pl. 1, fig. 5, which is the form we know as Mar- garitana margaritifera. NO. 1205 SYNOPSIS OF THE NAIADES—SIMPSON. 675 Rackerr, Tr. Linn. Soc. Lond., VIII, 1807, p. 40.—* Woon, Gen. Conch., I, 1815, p. 107, pl. xx, figs. 1-3.—* DILLwyn, Cat., I, 1817, p. 52.—* Turron, Conch. Dict., 1819, p. 106.—* BincLey, Useful Knowledge, III, 1825, p. 245. * Woop, Index Test. , 1825, p. 12, pl. 11, fig. 30.—* EaTon, Zool. Text-Book, 1826, p. 216.—* WAARDENBERG, Com. Hist. Nat. Anim., 1827, p. 360.— “ Ciimnu, Bib. Conch., Ist ser., I, 1845,p. 57, pl. Xx, figs. 1, 2.—* HANLEY, Ipsa. Linn. Conch., 1855, p. 460.—* HANLEY (Woop), Ind. Test., 3d ed., 1856, p. 16, pl. 11, fig. 30. Myamargaritifera testa ovali oblonga, ete.—* MOLLER, Zool. Danic, 1776, p. 245.— * CHEMNITZ, Conch. Cab., VI, 1782, p. 15, pl.1, fig. 5. * Baphia margaritifera MEUSCHEN, Mus. Gevers, 1787, p. 472. * Unio margaritifera DRAPARNAUD, Tab. Moll. Fr., 1801, p. 107; Hist. Moll. Fr., 1806, p. 132, pl. x, figs. 17-19; pl. x1, fig.5.?'—* GAERTNER, Vers. Syst., 1813, p.37.—* OkEN, Lehrbuch, 1815, p. 238.—* Cuvier, Régne Animal, II, 1817, p. 473.—* C. PF&IFFER, Nat. Deutsch. Land und Suss. Moll., 1821, Pt.1, p. 115, pl. v, fig. 11.—* Bosc, Hist. Nat. Coq., III, 1824, p. 189.—* Gras, Moll. Iseére. Ap., 1840, p. 22.—* FRIELE, Norske L. Fersk Moll., 1853, p.53. *Margaritana margaritifera SCHUMACHER, Essai. Nouv. Syst., I, 1817, p. 124, pl. x, fig. 4. —* MICHAUD, Comp. Hist. Moll. Fr., 1831, p. 114.—* Scuotz, Schleis L. and W. Moll., 1843, p. 135.—*TrRoscuEL, Arch. fiir Naturg., XIII, Pt. 1, 1847, p. 270; vi, fig. 1.—* Moquin-Tanvon, Hist. Moll. Fr., 1855, p. 623, pl. xxu, figs. 14-16.—* von WaaL, Arch. fiir die Nat. Kunde Liv., 2d ser., I, 1855, p. 118.—* KusTER, Conch. Cab., 1856, p. 293, pl. XXXVIII; XXXIX, figs. 2-4.— *CHENU, Manual, 1859, II, p. 144, fig. 710.—* WESTERLUND, Faun. Sw Nor. and Den., 1873, p. 577.—* HARTMAN and MICHENER, Conch. Cest., 1874, p. 91, fig. 189.—* CLEssin, Deutsch. Ex. Moll., 1876, p. 449, fig. 293.—* B. H. WRIGHT, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, oe * STEARNS, Pr. U.S. Nat. Mus., XIV, 1891, p.105.—* Locarp, Coq. de France, 1893, p. 149.—* von InERING, Abh. Senck. Nat. Ges., XVIII, 1893, p. 155.— * WESTERLUND, Act. Soc. F. and F. F., XIII, No. 7, 1897. p. 166. * flasmodonta margaritifera CONRAD, New F. W. Shells, 1834, p.72.—FERUSSAC, Guer. Mag., 1835, p. 26. *Margarita (Margaritana) margaritifera LEA, Syn., 1836, p.45; 1838, p. 28. *Margaron (Margaritana) margaritifera LEa, Syn., 1852, p. 43; 1870, p. 69. * Baphia margaritifera H. and A. ADAMS, Gen. Ree. Moll., I, 1857, p. 499, III, pl. CXVIUl, figs. 2, 2a. * Unio margaritiferus Rerzius, Dis. S. Hist. Nat., 1788, p. 16.—* SPENGLER, Skriv. Nat. Selsk., III, 1793, p.52.—* Turron, Conch. Ins. Brit., 1822, p. 241, pl. xv1, fig. 1.—* Nitsson, Hist. Moll. Svec., 1822, p. 103.—* TuRTON, Man. L. and F. W. Shells, 1831, p. 19, fig.9.—* ? ANTON, Verz. der Conch., 1839, p. 15.—* HAn- LEY, Test. Moll., 1842, p. 213; *Biv. Shells, 1843, p. 213.—*CaTLow and REEVE, Conch. Nom., 1845, p. 60.—* ForseEs and HAaNLey, Hist. Brit. Moll., IT, 1853, p. 146, pl. xxxvit1.—* SowERBY, II]. Ind. Brit. Shells, 1859, pl. vir, No. 1.— *TaTE, L. and F. W. Moll. Brit., 1866, pl. 11, fig. 15.—*Sowkrrsy, Conch. Icon., XVI, 1868, pl. LXIVv, fig. 325. * Alasmodon margaritiferus BROWN, L. and F. W. Conch., 1836, p. 112, pl. Xx1, fig. 13, pl. xx, figs. 1-3.—-* THompson, Ann. and Mag. Nat. Hist., V1, 1840, p. 197.—* Brown, Il. Recent Conch., 1844, p. 83, pls. xxx, figs. 1-4; XXXI, figs. 1, 2; xxxul, figs. 13-15.—* Turton, Man. L. and F. W. Shells, 1857, p. PAU [Oo OY, tess We) * Margaritana margaritiferus WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 184. * dlasmodon margaritiferum FLEMING, Hist. Brit. Moll., 1828, p. 417. * Unio margaritifer var. minor ROSSMASSLER, Icon., Pt. 2, 1835, p. 19, pl. Ix, fig. 129. batavus Lamarck. 676 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. 3 Dnio Fernie: KUSTER, Gonen Cab. 1856, p- 130, ais XXXVIII, XXXIX.— * MOQUIN-TANDON, Moll. Terr. et rein. Fr., Il, 1855, p. 566, pl. xLvir.—* Nor- DENSKIOLD and NYLANDER, Fin. Moll., 1856, p. 86, pl. v1, fig. 74.—* DROUET, Nay. Fr., I], 1857, p. 57, pl. 1.—* HEssLING, Perl. und Ihre Perlen, 1859, p. 86, pl. 1.—* JEFFREYS, Brit. Conch., I, 1862, p.37.—* Rrrve, L. and F. W. Moll. Brit., 1863, p. 223, fig. 3.—* L. ADAMS, Coll. Man., 1884, p. 19, pl. 1, fig. 12. * Unio (Margaritana) margaritifer SCHRENCK, Reis. und I’. im Amur-Lande, II, 1867? p. 700. * Unio auricularius SPENGLER, Skriv. Nat. Selsk., III, 1793, p. 44. | * Unio elongata LAMaARCK, Ann. saus Vert., VI, 1819, p. 70.'—Stark, Nat. Hist., IT, 1828, p. 90.—GRas, Moll. Isere Ap., 1840, p. 22.—Puron, Moll. Vosges., 1847, p. 72. * Damaris elongata LEACH, Syn. Moll. Gt. Brit., 1852, p. 322. j * Margaritana elongata W ESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 185.—° Locarp, Coq. de Fr., 1893, p. 149, fig. 162. * Unio elongatus NILSSON, Hist. Moll. Svec., 1822, p. 106.—* SOWERBy, Conch. Icon., XVI, 1868, pl. LXXxv1, fig. 397.—* PareL, Conch. Sam., IIT, 1890, p. 151. * Alasmodonta arcuata BARNES, Am. JI. Sci., VI, 1823, p. 277, pl. xu, fig. 20.—*C. B. AvamMs, Thompson’s Hist. of Vermont, 1842, p. 165, figured; * F. W.and L.S. of Vt., 1842, p. 165, figured.—* HrSssLING, Die. Perl. und Ihre Perlen, 1859, p. 205. * Mya arcuata EATON, Zool. Text Book, 1826, p. 222. * 4lasmodon arcuata GOULD, Inv. of Mass., 1841, p. 113, fig. 75.—* De Kay, Zool. of N. Y., Pt. 5, 1843, p. 197, pl. x1v, fig. 224.—* MIGHELS, Bost. Jl. N. Hist., 1844, p. 395, * Margaritana arcuata STIMPSON, Shells of N. Eng., 1851, p. 15.—* KusTEr, Conch. Cab., 1856, p. 293, pl. XxxIx, fig. 1.—* Conrap, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 262.—* GouLp, Inv. of Mass., 1870, p. 174, fig. 477.—* Parr, Conch. Sam., III, 1890, p. 172.—* H. CarRPENTER, Naut., IV, 1890, p. 35. * Unio sinuata C. PFEIFFER, Nat. Deutsch. L. und 8S. W. Moll., Pt. 2, 1825, p. 33, pl. vu, fig. 4. * Unio roissyi MICHAUD, Comp. Hist. Moll., Fr., 1831, p. 112, pl. xvi, fig. 28.— *GRAS, Moll. Isere Ap., 1840, p. 22 * Margaritana roissyi WESTERLUND, Faun. Pal., II, Pt.7, 1890, p. 186.—* LocarD, Coq de France, 1893, p. 150. * Unio tristis MORELET, Moll. Portugal, 1845, p. 107, pl. x11, fig. 2. * Margarita (Unio) crassissimus LEA, Syn., 1836, p.40; 1838, p. 26.’ * Unio (CMlasmodonts) dahuricus MIDDENDORFF, Bull. Phys. Math. Ac. St. Petersb., IX, 1850, p.?; *Sib. Reise, II, 1851, p. 275, pl. xxXv1, figs. 3-5. * Unio annenics Nine, L. and §. Moll. Sib., 1859, p. 26.—* HESSLING, Perl. und Ihre Perlen, 1859, p. 202.—* WESTERLUND, Kong. Sv. Vet. Ak. Hand., XIV, No. 12, p. 74. *Unio (Margaritana) dahuricus SCHRENCK, Reis. und Forsh. Amur-Lande, II, 1867, p. 699. *Margaritana dahurica KOBELT, Abh. Senck, Nat. Gee. me 1875, p.427.—* KOBELT, Faun. Jap. Ext., 1879, p. 143, pl. xu, figs. 1, 2.—* MIDDENDORFF, Kong. Svensk. Vetens. Ak. Handl., XIV, No. 12, p. 110.— “Pant, Conch. Sam., ITI, 1890, p. 173.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, 2: 187. 1 Lamarek ikea fine may be the Mya en eannnons of siinnccen ee is certain that it is. 2 The figure looks like an elongated batavus, but Morelet afterwards acknowledged that his shell was probaly a young margaritifera. 3The naked name crassissima was first applied to this by Klein, Methodi Ostraco- logiex, 1753, p. 128, pl. x. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. Grad “t dlasmodon falcata GOULD, Pr. Boston Soc. Nat. Hist., III, 1850, p. 294; * Otia Conch., 1862, p. 87;'—* U.S. Expl. Exp., XII, 1852, p. 433, figs. 545, 545a, 545).—Conrab, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 262.—Pa:rEL, Conch. Sam., III, 1890, p. 173. “Unio faleatus SOWERBY, Conch. Icon., XVI, 1868, pl. LXxv, fig. 390. *Unio (dlasmodonta) complanatus MIDDENDOREF, Sib. Reise, 11,1851, Pt. 1, p. 273, p!. xx vil, figs. 1-6.? *Margaritana complanata WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 187. *Unio mongolicus MIDDENDOREF, Sib. Reise, I], 1851, p. 277, pl. xxvu, figs. 7, 8.— * TLESSLING, Perl. und Ihre Perlen, 1859, »). 203.—* SCHRENCK, Reise und F. im Amur-Lande, IT, 1867, p. 699.—~ WESTERLUND, Kong. Sy. Vet. Ak. Hand, XIV, no. 12, 1876, p. 74.—* PazTuL, Conch. Sam., III, 1890, p. 155.—* WEsTERLUND, Hammad ersten wloteedael S90 rape elt. *Alasmodon yubaensis TRASK, Pr. Cal. Acad. Sci., 1, 1855, p. 30. *2?Margaritana raveneliana CHENU., Man., 1859, II, p. 144, fig. 714.3 All Europe except the southernmost portion; northern Asia; Japan; northern North America; Iceland. Its southern limit seems to be about north latitude 40°. It appears to be entirely cireumboreal, except that, so far as is known, if is missing in the central part of the North American continent. Wetherby has suggested that it may have been destroyed in this region by the ice of the glacial epoch. It is found in the upper Missouri and in Canada Hast, New York, and the New Ene- land States. +MARGARITANA CRASSA Retzius. *Mya testa crassa, SCUROTER, Flussconch., 1779, p. 182, pl. u, fig. 2. “Unio crassus RETZIUS, Diss. Hist. Nat., 1778, p. 17.A—SPENGLER, Skriv. Nat. Selsk., III, 1793, p. 56.—* Scuoxz, Schleis., L. und W. Moll., 1843, p. 130.—* von Wad, Arch. Naturkunde Liv., 2d. ser., I, 1855, p. 94.—*H. and A. ADAMs, Gen. Ree. Moll., II, 1857, p. 491.—* DrovueEt, Moll. Cote d’Or., 1867, p. 101.— * JORDAN, Jahrb. Deutsch. Mal. Ges., VI, 1879, p. 306.—* Drovurr, Mem. Acad. Dijon, 3d ser., VII, 1882, p. 13.°—* Pare, Conch. Sam., III, 1890, p. 149. 'This is undoubtedly margaritifera, but in the types the young shells show laterals. 2T have no doubt that this is Wargaritana margaritifera L. and not Unio complanatus Solander as Middendorff supposes. The specimens figured are terribly eroded, and the hinges are in very bad order, but they do not show laterals. ’Numerous varieties as well as species have been made of this abundant, wide- spread form. Notwithstanding its enormous distribution, the widest of any Naiad known, I have seen no variation that seems to me to be worthy of a varietal name. +Retzius’ description is in Latin, and consists of ten words, and as he does not figure the species, it would be impossible to determine what he meant only for the fact that he refers to the Flussconchylien of Schriter (Iya testa crassa, p. 182, pl. 11, fig.2). Schréter’s figure is not a very good one, but I can have no doubt that he had before him the large, heavy, black Naiad, with lateral teeth, found in southern Europe. In general it closely resembles the M. margaritifera externally, but the epidermis is amore dull black, the beaks are usually higher and more strongly developed, the nacre is white, and it has fairly well-developed laterals. European conchologists seem to have quite commonly mistaken heavy, large forms of Unio batavus for Retzius’ species, and in a number of cases the W/. margaritifera has been taken for it. ° Page 15 of reprint; I have not seen the original. 678 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. * Margaron ( Unio) crassus Lua, Syn., 1852, p.39; 1870, p. 62.! * Unio auricularius SPENGLER, Skriv. Nat. Selsk., III, 1792, p. 54.—* WrsTER- LUND, Faun. Pal., II, Pt. 7, 1890, p. 50. : Unio rugosa PoiRE?T, Coq. Fluy., et Terr. de ]’Aisne, 1801, p. 105.? * Unio sinuata LAMARCK, An. sans Vert., VI, 1819, p. 70.°?—BLAINVILLE, Man., 1825, p. 539, pl. LXvil, fig. 3.—* DesnayeEs, Enc. Méth., IJ, 1827, p. 151, pl. CCXLVItT, fig. 1; IT, 1830, p.579, pl. ccoxiviu1, fig. 1, la, 1b. —* SGANZIN, Mem, Hist. Nat. Strasb., III, 1842, II, p. 8.°—* Puron, Moll. Vosges, 1847, p. 72. “Unio (Potamida) sinuata SWAINnsoN, Tr. on Mal., 1840, p. 268. *Unio sinuatus ROSSMASSLER, Icon., III, 1856, p. 22, pl. x11, fig. 195.—* GassIEs, Moll. de l’Ag., 1849, p. 198.—* Dupuy, Hist. Moll. Fr., 1852, p. 630, pl. xxm1, fig. 7.—* ROSSMASSLER, Icon., III, 1854, p. 38, pl. LXxX, fig. 853, 853a.°— *Moquin-TanpDon, Moll. Terr. and Fluv. Fr., 11, 1855, p. 567; II, pl. xLviu, figs. 1-3.—* DROUET, Nay. Fr., II, 1857, p. 61, pl. 11.—* HESSLING, Die Perl. and Ihre Perlen, 1859, p. 184.—*SoweErRBy, Conch. Icon., XVI, pl. Lx, fig. 311.—* Pare, Conch. Sam, III, 1890, p. 167.—* Locarp, Coq. de Fr., 1893, p. 151, fig. 164. *? Unio litoralis C. PFEIFFER, Nat. Deutsch. L. und 8. W. Moll., Pt. 1, 1821, p. 117, pleveitig. 1207 *Unio crassissimus HANLEY, Test. Moll., 1842, p. 209; * Biv. Shells, 1843, p. 209, pl. xx1nj, fig.54.—* CaTLow and REEVE, Conch. Nom., 1845, p. 58. * Unio gargotte Putiprl, Moll. Sic., 1836, p. 66.—*RossMassLeEr, Icon., VII and VIII, 1838, p. 26, pl. xxxv, fig. 493.2—* Drousxt, J]. de Conch., XXIX., 1881, p. 25.—* WESTERLUND, Faun. Pal., IT, Pt. 7, 1890, p. 156. Southern Europe; possibly into Asia Minor and southwest Siberia. +MARGARITANA LAOSENSIS Lea. * Unio laosensis Lea, Pr. Ac. Nat. Sci. Phila., VII, 1863, p. 190; *Jl. Ac. N. Sci. Phila., VI, 1866, p. 63, pl. XXxI, fig. 61; ~ Obs., XI, 1867, p. 67, pl. xx1, fig. 61.—— * SowERBY, Conch. Icon., XVI, 1866, pl. xLvu, fig. 256.—* PaTEL, Conch. Sam., III, 1890, p. 156. * Margaron (Unio) laosensis LEA, Syn., 1870, p. 62. Unio sula THEOBALD (where?). Laos Mountains, Cambodia; Siam. 1Tt has often been impossible to determine what species has been referred to by authors under the name crassus. In cases where they have cited this species from the north of Europe I have no doubt that they either had Margaritana margaritifera or Unio batavus before them. In those cases where I could not be certain as to what was meant I have omitted references. 2 According to Moquin Tandon this is U. sinuatus Lamarck. 3Lamarck refers to Encye. Méth., 1797, pl. ccoxLViul, figs. la, 1b, which seem to be the crassus of Retzius. Lea, who examined Lamarck’s type, says he had thought it was the Margaritana margaritifera, but that it had lateral teeth. (Obs. I, pp. 35, 198.) 1 These figures look something like a heavy inflated Lampsilis alatus Say, but are probably the crassus of Retzius. ‘Given to Sganzin by M. Fabert, chief of batallion of infantry, as having been found at St. Paul in the Isle of Bourbon, but Sganzin very much doubts the locality. Of course it was never found in the Indian Ocean region. ‘A magnificent figure of this fine species, and in a, which shows the hinge, the laterals are plainly delineated. 7Dr. Lea is doubtful about this being litoralis, and I am sure it is not. It appears more like M. crassus than anything else. 8Dr. Lea makes this a synonym of Pfeiffer’s elongatulus, which is, I believe, quite near to U. pictorum. Rossmassler’s figure shows a shell very much like Margaritana margaritifera, but it has lateral teeth. . NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 679 + MARGARITANA HEMBELI Conrad. * Unio hembeli CONRAD, Monog., X, 1838, p. 93, pl. LI, fig. 1.—* HANLEy, Biv. Shells, 1856, p. 383, pl. xxv, fig. 3.—* H. and A. Apams, Gen. Rec. Moll., II 1857, p. 497.—* SowERBy, Conch. Icon., XVI, 1866, ‘pi. XXXIM, fig. 172.— *B. H. Wricut, Check List, 1888.—* ParmL, Conch. Sam., III, 1390, p. 154. * Margaron ( Unio) hembels Lra, Syn., 1852, p. 21; 1870, p. 32. Louisiana; Burnt Corn, Alabama. +MARGARITANA MONODONTA Say. Unio monodonta Say, N. Harm. Diss., Il, 1829, p. 293; *Am. Conch., I, 1830, pl. vi.—Suorr and Eaton, Trans. J1., 1831, p. 79.—* Conrapb, New F. W. Shells, 1834, p. 70.—DESHAYES, An. sans. Vert., 2d ed., VI, 1835, p. 553; 3d ed., II, 1839, p.674.—* CHENU, Bib. Conch., Ist: ser., III, 1845, p. 12, pl. 1, fig. 1. Gammon and REEVE, Conch. Nom., "1845, p. 61. * Alasmodonta monodonta Bentacac: Guer. Mag., 1835, p. 26. * Margaritana monodonta CONRAD, Pr. Ac. N. Sci., Phila. VI, 1&53, p. 262. *Unio monodontus SAy, Am. Conch., VI, 1834.—* HaNnLEy, Test. Moll., 1842, p. 210; * Biv. Shells, 1843, p. 210, pl. xxi, fig. 48.—* H. and A. Apams, Gen., Rec. Moll., II, 1857, p. 491.—* Kustrr, Conch. Cab., 1861, p. 221, pl. oy, fig. 1 eR. H. Wricut, Check List, 1888.—* Paoren, Conch. Sam., III, 1890, p. 159. * Margarita (Unio) monodontus La, Syn., 1836, p. 40; 1838, p. 26. * Margaron (Unio) monodontus LEA, Syn., 1852, p. 39; 1870, p. 62. * Unio soleniformis Lea, Tr. Am. Phil. Soc., LV, 1831, p. 87, pl. x, fig. 17; *Obs., I, 1834, p. 97, pl. x, fig. 17.—*CuHENU, Ill. Conch., 1858, pl. xrv, figs. 4, 4a, 4b; * Manual, IT, 1859, p. 137, fig. 661.—* SowERBy, Conch. Icon., XVI, 1866, ple xav, fic. 243. * Margaritana soleniformis P@TEL, Conch. Sam., III, 1890, p. 173. Ohio; Cumberland, and Tennessee river systems; Illinois; eastern lowa; Nepeaia?. +MARGARITANA DECUMBENS Lea. * Unio decumbens Lea, Pr. Ac. N. Sci. Phila., V, 1861, p.40.—* Lra, Jl]. Ac. N. Sci. Phila., 1862, p. 87, pl. x11, fig. 236.—* Lea, Obs., VIII, 1862, p. 91, pl. x11, fig. 236.—* SOWERBY, Conch. Icon., XVI, 1868, pl. LxxxuI, fig. 432.—*B. H. WriIGHT, Check List, 1888. * Margaron (Unio) decumbens La, Syn., 1870, p. 62, Alabama. Genus UNIO Retzius, 1788.! (Type, Unio tumidus Retzius. ) Unio Rerzius, Diss. Hist. Nov. Test. Gen., 1788, p. 16.—BrUGUIER™, Choix de Memoirs, I, 1792, p. 106. Limnea Pout (part), Test. Utr. Sic., I, 1791, p.31. Lymnium OKEN, Lehrbuch, 1815, p. 237. Elliptio RAFINESQUE, J1. de Phys. Nat. Hist., 1819, p. 426. Mysca TURTON, Conch. Ins. Brit., 1822 2b 243. I'This genus was described in a Sages by Laurentius Miinter Philipsson under his master, Retzius, in the University of Lund, Sweden, and it is often credited to the former. I am informed by Professor Joh. Chr. Moberg, of Lund, that by a former law or custom of the university the professor was considered the author of all papers which a student under him defended. According to this, Retzius must be credited with the genus. This law was repealed in Lund in 1852. 680 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXI1. Canthyria SwWAINSON, Tr. on Mal., 1840, p. 278. Uniomerus CONRAD, Pr. Ac. N. Sei. Phila., VI, 1253, p. 268. Shell ineyuilateral, oval to elongated, rounded in front and pointed or biangulate behind, with a more or less developed posterior ridge, often becoming slightly arcuate when old; beaks only moderately full, generally sculptured with coarse ridges, which run parallel with the erowth lines, or are somewhat doubly looped, sometimes broken and showing fine radiating lines behind; surface sinooth, slightly concentric- ally ridged or pustulous; epidermis generally rather dull colored, rayless or feebly rayed; hinge plate narrow; two pseudocardinals and two lat- erals in the left valve and one pseudocardinal and one lateral in the right, with rarely a vestige of a second lateral; cavity of the beaks not deep or compressed. Animal having the inner branchie free from the abdominal sac for from one-half to their entire length; marsupium occupying the whole length of the outer gills only, forming a thick, smooth pad when filled with young; gills united to the mantle behind to their extreme points, or very nearly so; papille on branchial and anal openings unbranched; superanal opening always closed below. Section LYMNIUM Oken, 1815. (Type, Unio pictorum Retzius. ) Shell generally smooth; beak sculpture broken, often somewhat cor- rugated or pustulous; pseudocardinals compressed; beak cavities well excavated, not compressed. Animal highly colored, anal opening crenu- late or smooth. (Group of Unio pictorum.) Shell inflated, elongate, oval, anterior end angled above, swollen a little at posterior base; beaks full, their sculpture consisting of numer- ous slightly doubly looped bars which often become pustulous; poste, rior ridge rather low; epidermis smooth, rather bright, sometimes slightly rayed behind; rest periods well marked; pseudocardinals com- pressed, often a little retlexed, smooth below, those of the left valve partly united; muscle scars smooth; nacre whitish to salmon. Animal the same as described for the section. tUNIO PICTORUM Linneus.! “Mya pictorum LINNAZUS, Syst. Nature, 10th ed., 1758, I, p.671; Faun. Suece., 1761, No. 2129.—* MULLER, Vermes, 1774, p. 211.—PENNaNT, Brit. Zool., IV, 1777? pl. xu, fig. 17.—*Da Costa, Hist. Nat. Brit., 1778, p..228, pl. xv, fig. 4.—*SCHROTER, Flussconch., 1779, p. 178, pl. m1, figs. 2, 4, 5.—* Born, Test. Mus. Vind., 1780, p. 20.—*ScHRGOTER, Ein. Conch., 1783, II, p. 604.— *“Oxivi, Zool. Adriatic, 1792, p. 95.—SturM, Deuts. Faun., VI, 1803, 2d ed, p. 19, pls. a, b, cc —* Montagu, Test. Brit., 1803, p. 36.—* TuRTON, Brit. Fauna, 1Hanley says [Ipse Linnzei Conchylia, p. 27]: ‘‘More Uniones than one are pres- ent in the [Linnean] collection, but upon the whole the U. pictoruwm of authors [Rossm. Icon., fig. 196] agrees best with synonymy and description. The figure referred to of Lister is U. pictorum; Bonanni’s drawing is more doubtful and was pussibly meant for U. tumidus. The descriptions in Fauna Suecica and Systema are brief and unsatisfactory and might suit either species alike.” NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 681 1807, p. 146.—*MaTon and Rackerr, Tr. Linn. Soc. Lond., VIII, 1807, p. 38.—*Woopb, Gen. Conch., I, 1815, p. 104, pl. x1Xx, figs. 3, 4.—* Dintwyn, Cat., I, 1817, p. 49.—*Turron, Conch. Dict., 1819, p. 106.—* Woop, Index Test., 1825, p. 12, pl. 11, fig. 26c; ~rev. ed., 1856, p. 15, pl. 1, fig. 26.—*?CHENU, Bib. Conch., 1st ser., I, 1845, p. 114, pl. xtvu, figs. 8, 9.'.—* HaNurEy, Ipsa. Linn. Conch., 1855, p. 460. * Unio pictorum Rerzius, Diss. Hist. Nat., 1778, p. 17.—* SPENGLER, Skriv. Selsk: Nat., III, 1793, p. 59.—* DraparNauD, Tab. Moll. Fr., 1801, p. 106; in part Hist. Moll. Fr., 1806, p. 181, pl. x1, fig. 4.2—*GaERTNER, Vers. Kin. Syst., 1813, p. 36.—*Mu.Let, Moll. Maine et Loire, 1813, p. 74.—* Brarp, Hist. Coq. Paris, 1815, p. 226, pl. vim, fig. 1.—Brooxes, Int. to Conch., 1815, p. 51, pl. u, fig. 12.—*Cuvirr, Regne Animal, II, 1817, p. 473.—* Kurgs, Diss. Test., 1818, p. 45.—* Lamarck, An. sans Vert., VI, 1819, p. 77.—*C. PFEIFFER, L. and Suss. Moll., Pt. 1, 1821, p. 115, pl. v, figs. 9, 20.—* Nis- SON, Hist. Moll. Svec., 1822, p. 111.—* Bosc, Hist. Nat. Coq., III, 1824, p. 139, pl. xxi, fig. 3.—* BLAINVILLE, Manual, Mal., 1825, p. 539, pl. Lxvut, fig. 2.—*Croucu, Ill. Int. Lamarck, 1827, p. 16, pl. 1x, figs. 4, 4a, 4b.— * WAARDENBERG, Com. Hist. Nat., 1827, p. 36.—* KLEEBERG, Moll. Boruss, 1828, p. 38.—Stark, Nat. Hist., II, 1828, p.90.—* FLEMING, Hist. Brit. Animals, 1828, p. 416.—*Goupit, Hist. Moll. Sarthe, 1835, p. 84.—* RossMass LER, Icon., I, 1835, p. 118, pl. 11, figs. 71, 71a, 71d; ITI, 1836, p. 23, pl. x11, fig. 196; VI, 1837, p. 55, pl. xxx, fig. 409; IX, 1839, p. 10, pl. xiv, fig. 587-590; XI, 1842, p. 14, pl. LV, fig. 741; XII, 1844, p. 30, pl. Lv, figs. 762-766; p. 31, pl. L1x, tigs. 767-769.—* FoOURNEL, Faun. Moselle, I, 1836, p. 486.—* FLEMING, Moll. Animals, 1837, pl. x1v, fig.51.—* Wyatt, Man. Conch., 1838, p. 67, pl. v1ul, fig. 6.—* Porro, Mal. Como., 1838, p. 117.—* TERVER, Moll. Terr. et Fluy., 1839, p. 39.—* ANTON, Verz. der Conch., 1839, p. 15.—* ? Gras, Moll. Isere., 1840, p. 71, pl. 1, fig. 8.°—* Haney, Test. Moll., 1842, p. 205; * Biv. Shells, 1843, p. 205.— *SCHOLZ, Schleis, L. and W. Moll., 1843, p. 127.—*CaTLow and REEVE, Conch. Nom., 1845, p. 62.—* STABILE, Faun. Lug., 1845, p. 60, pl. 111, fig. 73.— *MORELET, Moll. Port., 1845, p. 108.—* Brown, L. and F. W. Conch., 1845, p. 107, pl. XIX, figs. 1-4.—* Puton, Moll. Vosges, 1847, p. 70.——*SrEIN, Die Lebend. Schneck., 1850, p. 104, pls. XXIv, xxv, figs. 1, 2.—* MIDDENDOREF, Sib. Reise, II, 1851, p. 276, pl. xxviul, figs. 1-3.—-* LEacu, Syn. Moll. Gt. Brit., 1852, p. 234.—-* Dupuy, Hist. M. Fr., 1852, p. 617, pl. xxvi, fig. 20.—* ForBzEs and HANLEY, Hist. Brit. Moll., II, 1853, p. 142, pl. xxxrx, fig. 1.—* KusrTEr, Conch. Cab. Unio, 1854, p. 88, pl. xx, figs. 1, 2; pl. XXIV; xxv, figs. 1, 2.— *MogQuin-Tanpon, Moll. Terr. Fluv. Fr., LU, 1855, p. 576, pl. u, figs, 8, 10; LI, figs. 1, 10.—*von WauL, Arch. Naturk. Liv. Est., 2d ser., 1855, p. 105.— “NORDENSKIOLD and NYLANDER, Fin. Moll., 1856, p. 838, pl. v, fig. 72.— *“DROUET, Nay. Fr., II, 1857, p. 103, pl. vi1.—-* TURTON, Man. L. and I’. W. Shells, 1857, p. 279, pl. 11, fig. 11.—*H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 491; III, pl. cxv1, figs. 5, 5a, 5b.—* SOWERBY, III. Index Brit. Shells, 1859, No. 2, pl. vi.—*Goopricu, Ill. Nat. Hist., II, 1859, p. 523, fig.— JEFFREYS, Brit. Conch., I, 1862, p. 34.—* Brmuz, Faun. Sieben, 1863, p. 192.— * REEVE, L. and F. W. Moll. Brit., 1863, p. 221, fig. 2.—* Tats, L. and F. W. Moll. G. Brit., 1866, pl. 1, fig. 3.—* ? SCHRENCK, Reise und F. im Am. Lande, II, 1867, p. 696.:—* KoBELT, Faun. Nass. Moll., 1871, p. 241.—* Wes1ER- 'U. batavus perhaps. ?Draparnaud gives figures 1-4 for pictorum. One and 2 may possibly be that spe- cies, but they look more like batavus, and 3 is certainly batavus, while 4 is probably pictorun. 3 Doubtful, may be batavus. *It is very probable that the specimens from Amur Land and vicinity which have been referred to U. pictorum are a smooth variety of Nodularia douglasiw Gray, a species resembling it in form, but not at all closely related to it. Saw 682 PROCEEDINGS OF THE NATIONAL MUSEUM. Vou. XU, LUND, Pan SaeNe oud IDE; 1873) p- B74. Ln HMAN, hie Selneckou 1873, p. 290.—* CLEssin, Deutsche Ex. Moll., 1876, p. 153, fig. 294.—* JORDAN, Jahrb. Deuts. Mal. Ges., VI, 1879, p. 301.—* Drovurr, Mem. Acad. Dijon, VII, . 1882, p. 10 (reprint).—* L. Apams, Coll. Man., 1884, ce 18, pl. 1, fig. 11.— * ? CLESSIN, Moll. Oest., 1887, p.723.—PareL, Conch. Sam., III, 1890, p. 163. * Baphie. pictorum MeuscueEn, Mus. Gevers., 1787, p. 472. * Lymnium pictorum OKEN, Lehrb., 1815, p. 237. * Mysca pictorum TuRvTON, Conch. Ins. Brit., 1822, p. 245; ~Man. L. and F. W. Shells, Brit. Is., 1831, p. 20, fig. 11. * Margarita (Unio) pictorum LEA, Syn., 1836, p. 36; 1838, p. 24. * Margaron (Unio) pictorum La, Syn., 1852, p. 36; 1870, p.58. * Mya augusta subflava, ete., ScHROTER, Fluss. Conch., 1779, p. 184, pl. m1, fig. 3; pl. iv, fig. 6. * Mya nodosa GMELIN, Syst. Nat., 13th ed., 1788, p. 3222.1—* Woop, Gen. Conch., I, 1815, p. 110.—* Dittwyn, Cat., I, 1817, p.54.—* Woop, Ind. Test., 1825, p. 12, pl. u, fig. 34a; *rev.ed., 1856, p. 16, pl. 11, fig. 34.—* Pare, Conch, Sam., III, 1890, p. 161. *® Unio conus SPENGLER, Skriv. Selsk. Nat., III, 1793, p. 60. * Mya ovalis DoNOovaN, Brit. Shells, III, 1801, pl. LXxx1x.—* Turron, Brit. Fauna, 1807, p. 146. * 2 Unio ovalis SOwERBY, Rec. and Foss. Shells, No. XVI, 1823, fig ~.—* ? REEVE, Conch. Syst., I, 1841, p. 117, pl. LxxxviiI, fig. 1.—* CHENU, Bib. Conch., 1st ser., I, 1845, p. 67, pl. xxiv, figs. 1-3.—* PaTEL, Conch. Sam., ITI, 1890, p. 162. * Mya nodulosa Woop (part), Gen. Conch., J, 1815, p. 106, pl. xxii, figs. 3, 4.” * Unio nodulosa LAMARCK, An. sans Vert., VI, 1819, p. 78. * Unio rostrata LAMARCK, An. sans Vert., VI, 1819, p. 77.—*C. PrEIrrER, Nat. Deuts. L.and Suss. Moll., Pt.1, 1821, p. 114, pl. v, fig. 8.—* WAARDENBERG, Com. Hist. Nat. Animalium, 1827, p. 36.—* Lamarck, Ene. Méth., II, 1830, p. 586.—* MicuauD, Comp. Hist. Moll. Fr., 1831, p. 108, pl. xvi, fig. 25.— *BRowN, L. and F.W. Conch., 1836, p. 109, pl. xx, figs. 1, 2; “Ill. Rec. Conch., 1844, p. 82, pl. xxxu, figs. 9-12.—* PuTon, Moll. Vosges, 1847, p. 70.— . CNY, Moll. Isere., 1840, p. 71, pl. v, fig. 21. *Unio rostratus CHENU, Man., II, 1859, p. 137, fig. 658.—*WrESTERLUND, Faun. der Pal., II, Pt. 7, 1890, p. 104.—*PaTEL, Conch. Sam., III, 1890, p. 166.—*“Locarp, Les Coq. de Fr., 1893, p. 207.—WESTERLUND, Act. Soc. F. and F. F., XIII, No. 7, 1897, p. 165. * Unio manca LAMARCK, An.sans Vert., VI, 1819, p. 80. *Unio mancus DROUET, Moll. Céte Or, 1867, p.108.—* WEsSTERLUND, Faun. der Ral iee tals oOspacos * Unio limosus Niusson, Hist. Moll. Svec., 1822, p. 110.— * RossMassLER, Icon., III, 1836, p. 24, pl. XIII, fig. 199.—* Kuster, Conch. Cab. Unio, 1854, p. 80, pls. xxq, XXII, XXIM.—* PasTEL, Conch. Sam., {11, 1890, p. 157.—* WeSTERLUND, Faun. Pal., I, Pt. 7, 1890, p. 115.—*Locarb, Coq. de Fr., 1893, p. 211.—*WEsSTER- LUND, Ag Soc. F. and F. F., XIII, No. 7, 1897, p. 166. *Unio deanna MICHAUD, ont Hist. Moll. Fr., 1831, p. 107, pl. xv1, fig. 30.— * ROSSMASSLER, Icon., III, 1836, p. 23, pl. x11, fig. 197.—* Gras, Moll. Isere. App., 1840, p. 21.—* Brown, Ill. Ree. Conch., 1844, p. 81, pl. xxx1I, figs. 1-4; L.and F. W. Conch., 1845, p. 108, pl. xx, figs. 3, 4.—* LocarD, Coq. de Fr., 1893, p. 210. *Unio dubius FITZINGER, Syst. Verz., 1833, p. 119. * Unio michaudiana DES MouLins, Actes Soc. Linn. Bord., VI, 1833, p. 27, plate. * Unio longinostrs: ROSSMASSLER, Icon., III, 1836, p. 26, “al xIv, fig. 200; XI, 1842, emnens SPS to Conan: Cabinet X, p. 347, pl. cLXx, fig. 1650, cath a is, ei am quite certain, a young U. pictorum. 2T wo species are figured; figs. 1 and 2 are a heavy, inflated Chinese species; figs. 3 and 4 are no doubt pictorum. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 683 p. 18, pl. Liv, fig. 738.—*SraBILe, Faun. Lug., 1845, p. 60.—*DROUET, Mem. Ac. Dijon, VII, 1882, p. 11 (reprint).—*WESTERLUND, Faun. der Pal., II, Pt. 7, 1890; p. 117.—*P&TEL, , Conch. Sam., III, 1890, p. 158.—*Locarp, Coq. de Fr., 1893, p. 209. SEDtanida sicula SWAINSON, Treatise on Mal., 1840, p. 282, fig. 58. *Unio siculus HANLEY, Biv. Shells, 1856, p. 383, pl. xx, fig. 19.—* PmrsEt, Conch. Sam., III, 1890, p. 167. * Unio arade PHILIpPiI, Enum. Moll. Sic., III, 1844, p. 49.—* Kuster, Conch. Cab. Unio, 1854, p. 105, pl. xxviml, fig. 6.—* KoBELT, Icon., IV, 1876, p. 62, pl. CXVHU, figs. 1146, 1147.—* DroveEtT, J]. de Conch., XXIX, 1881, p. 25, *Unio dactylus MORELET, Moll. Port. , 1845, p. 110, pl. x1v vie 2.—* WESTERLUND, Faun. Pal., II, Pt. 1, 1890, p. 111.—* KoBELT, Icon., new, ser., VI, 1893, p. 98, pl. cxxx, fig. 1132. * Unio mucidus MORELET, Moll. Port., 1845, p. 111.—* KOBELT, Icon., new. ser., VI, 1893, p. 98, pl. CLXxx, figs. 1130, 1131.—* P&TEL, Conch. Seviny, III, 1390, p- 160.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 111. *Unio quinqueannulatus Kuster, Conch. Cab. Unio, 1854, p. 93, pl. xxv, figs. 3, 4.—* P#TEL, Conch. Sam., III, 1890, p. 165. *Unio pallens KUSTER, Conch. Cab. Unio, 1854, p. 95, pl. xxv, fig. 5; xxvI, fig. 1. * Unio viridiflavus Kuster, Conch. Cab. Unio, 1854, p. 96, pl. xxv1, figs. 2, 3.— *PaeTEL, Conch. Sam., III, 1890, p. 171. *Unio petrovichiti KUSTER, Conch. Cab. Unio, 1854, p. 98, pl. xxvt, fig. 5; XXVII, fig. 1.—* PmTEL, Conch. Sam., IIT, 1890, p. 163. *Unio maltzani KusrER, Conch. Cab. Unio, 1854, p. 106, pl. xxix, figs. 1, 2.— *PamTEL, Conch. Sam., III, 1890, p. 158. *Unio baletonicus KusTER, Conch. Cab. Unio, 1861, p. 231, pl. Lxxvil, fig. 1.— *SurRV-AIN, Hist. Mal. Bal., 1881, p. 98. “Unio proechus BOURGUIGNAT, Rev. et Mag., XIV, 1862, pl. xrx, figs. 1-3; XV, 1863, p. 19, x1x.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 118. *Unio actephilus BOURGUIGNAT, Rev. et Mag., XIV, 1862, pl. xIx, figs. 7, 8, xx, fig. 3; XV, 1863, p. 20. “Unio lateladantis GENTILUOMO, Bull. Mal. Ital., I, 1868, p. 54, pl. rv, fics. 1-3. Europe generally; Siberia east to the Lena River and perhaps . farther; south into Asia Minor?; Algiers?. +UNIO PLATYRHYNCHUS Rossmassler. *Unio platyrhynchus ROSSMASSLER, Icon., II, 1835, p. 22, pl. 1x, fig. 180; V, 1887, p- 20, pl. xxiv, fig. 338:—* Porro, Mal. Como, 1838, p. 117.—* HaNnLry, Test. Moll., 1842, p. 205; * Biv. Shells., 1843, p. 205, pl. xx, fig. 53.—* CaTLow and REEVE, Conch. Nom., 1845, p. 62.—* KusTEr, Conch. Cab. Unio, 1854, p. 77, pls. XIX, XX.—* SOWERBY, Conch. Icvon., XVI, 1856, pl. xxx, fig. 154.— *H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 491.—* PasTEL, Conch. Sam., III, 1890, p. 163.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 118. * Margarita (Unio) platyrhynchus Lea, Syu., 1836, p. 35; 1838, p. 24. “ Margaron (Unio) platyrhynchus LEA, Syn., 1852, p. 36; 1870, p. 58. * Unio fiscallianus KLEectacH, Atti. Soc. Ital., XV, 1872, p. 92.—* PFEIFVER and Koss Lt, Mal. Blatt., XX, 1873, p. 92, fig. Unio limosus * KOBELT, Icon., new ser., VI, 1893, p. 44, pl. cLv1, figs. 1024—1027.! Central and southwestern Europe. 1 According to Kobelt in above reference, his platyrhynchus =the limosus of Nilsson. Nilsson does not figure his species in Hist. Moll. Svec., but refers to pl. v, fig. 10, in Pfeiffer’s Land and Susswasser Mollusken, which is plainly a Unio pictorwm. Kobelt’s figures, the latter three certainly, are genuine platyrhynchus, which I consider a perfectly good species. 684 _ PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XX, +UNIO PLATYRINCHOIDEUS Dupuy. Unio platyrinchoideus Dupuy, Cat. Ext. Gall. Test, 1849;! * Hist. Moll. Fr., VI, 1852, p. 649, pl. xxvii, fic. 16.—? DrovEn, Nay. Er., Ul, 185%, p. 100; plats, fig. 1.—Pa:1EL, Conch. Sam., III, 1890, p. 163. *Unio platyrhynchoideus WESTERLUND, Faun. Pal.,-Il, Pt. 7, 1890, p. 121. - *Unio platyrrhynchoideus SOWERBY, Conch. Icon., XVI, 1868, pl. LXX, fig. 358. “Unio danielis Gassirs, Actes. Soe. Linn. de Bord, XXVI, 1866, p. 132, pl. 1, fig, 8.—* WESTFRLUND, Faun. Pal., Il, Pt. 7, 1890, p. i110.—* Parr, Conch. Sam., IIT, 1890, p. 150.—* LocarDb, Coq. de. Fr., 1893, p. 199. Unio lardelianus Prccniout, Bull. Mal. It., 11, 1869, p. 163, pl. v. South France. +UNIO ELONGATULUS CC. Pfeiffer. *Unio elongatula C. PFEIFFER,” Nat. Deuts., L. and §. Moll., IT, 1825, p. 35, pl. v111, figs. 5, 6.—ROssSMASSLER, Icon., IT, 1835, p. 23, pl. 1x, fig. 182; XII, 1844, p. AS Til, INA, wie, TNS Wl 187 19, + 42, pl. CLXu, figs. 1644, 1645.—PorRRo, Mal. Como, 1838, p. 114.—CaTLow and REEVE, Conch. Nom., 1845, p. 59.— Kuster, Conch. Cab. Unio., 1854, p. 104, pl. xxviu, figs. 4,5.—DRourET, Nay Fr., II, 1857, p. 91, pl. vi, fig. 2—H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 491.—SowkRBy, Conch. Icon., XVI, 1868, pl. LXxxv, fig. 451.—DRoUET, J. de Conch., XXVII, 1879, p. 331.—*CLEssin, Moll. Oest., 1887, p. 735.— * WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 163.—* PasTEL, Conch. Sam., ITI, 1890, p. 151.—* LocarD, Coq. de Fr., 1893, p. 166, fig. 180. * Margarita (Unio) elongatulus Lea, Syn., 1856, 1838, p. 24. : Margaron (Unio) elongatulus La, Syn., 1852, p. 37, 1870, p. 59. Central Europe. +UNIO TUMIDUS Retzius. “Unio tumidus RETzIusS, Diss. Hist. Nat., 1778, p. 17.—SPENGLER, Skriv. Selsk. - Nat., III, 1793, p.57.--NiLsson, Hist. Moll. Svec., 1822, p. 109.—RoOssMASSLER, Tcon., I, 1835, p. 117, pl. 11, figs. 70, 70a, 70d; III, 1836, p. 27, pl. xiv, figs. 202-204; VIII, 1838, p. 41, pl. xu, fig. 543; XII, 1844, p. 32, pl. Lx, figs. 772-778.3— * BRowN, L. and F. W. Conch., 1836, p. 109, pl. xxi, figs. 8, 9.— *THANLEY, Jest. Moll., 1842, p. 205; * Biv. Shells, 1843, p. 205.—~ Brown, II1. Rec. Conch., 1844, p. 82, pl. xxxu, figs. 5-8.—* CaTLow and REEVE, Conch. Nom., 1845, p. 65.--* STABILB, Faun. Lug., 1845, p. 61, pl. 11, fig. 74.—* STxin, Die Leb. Schnecken, 1850, p. 103.—* Dupuy, Hist. Moll. Fr:, 1852, p. 655, pl. XxX vu, fig. 20.—* ForBES and HANLEy, ied Brit. Moll. ein 1853, p. 140, pl. x1, fig. 1.—*KusTer, Conch. Cab. Unio, 1854, p. 71, Ie XVII, XVIII.— * MoquiN-TANDON, Moll. Terr. Fluv., I], 1855, p. 577, pl. 11, figs. 11, 14.—* von Waut, Arch. fiir Naturkunde Liy., 2d ser., I, p. 115.—* NORDENSKIOLD and NYLANDER, Fin. Moll., 1856, p. 85, pl. vi, figs. 7, 8.-—* Gray, Turton’s Man , 1857, p. 297.—* DRovET, Nay. Fr., II, 1857, p. 110, pl. 1x, fig. 2.—*H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 491.—* SowERBy, III. Int. British Shells, 1859, pl. vil, No. 3.—* JEFFREYS, Brit. Conch., I, 1862, p. 32.—* REEVE, L. and I’. W. Moll. Brit., 1863, p. 219, fig. 1.— ‘Runve, Conch. ious XVI, 1865, pl. voreuied a Tee to the Bove hihont page > Raereena, I have not seen the paper. 2Pfeifter credits this to Muhlfeld in lité. It is a doubtful species, perhaps a variety of pictorum, but is generally smaller, thinner, and more compressed, and is rather more biangulate behind. Pfeifier’s two figures represent somewhat different forms, but they may be the same thing. 3 Fig. 776 is probably a form of batarus. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 685 XXV, fig. 124.—* TaTE, L. and F. W. Moll. Brit., 1866, pl. 1, fig. 2.—* KoBEtt, Faun. Nass. Moll., 1871, p. 239.—* Leuman, Die Schnecken, 1873, p. 292.— * WESTERLUND, Faun. 8. N. and D., 1873, p.572.—* CLEssIN, Deuts. Ex. Moll, 1876, p. 458, fig. 299.—* Jorpan, Jahrb. Deuts. Mal. Ges., VI, 1879, p. 305.— * DROUET, Union. Russ., 1881, p.9; *Mem. Ac. Dijon, 3d ser., VII, 1882, p. 12 (reprint).—* L. ApAms, Coll. Man., 1884, p. 18, pl. L, fig. 10.—* CLEssIN, Moll. Oest., 1887, p. 738.—* PHTEL, Conch. Sam., III, 1890, p. 170.—*KoBeE tt, Icon., new ed., VI, 1893, p. 87, pl. CLXxt1tl, fig. 1115.—* LocarD, Coq. Fr., 1893, p. 212.—* WESTERLUND, Act. Soc. F. and F. F., XIII, 1897, p. 162. * Margaron ( Uniaq) twmidus LEA, Syn., 1852, p.36; 1870, p. 58. * Unio tumida C. PFEIFFER, Nat. Deuts. L. and 8. Moll., II, 1825, p. 34, pl. vn, figs. 2,3; pl. vim, figs. 1, 2.—* KLEEBERG, Moll. Bor., 1828, p. 38.—* PuTon, Moll. Vosges, 1847, p. 71. * Mya depressa DONOVAN, Brit. Shells, II, 1801, pl. cl.—* CHENU, Bib. Conch., Ist Ser., I, 1845, p. 71, pl. xxv, figs. 1-3. * Unio depressus PasTEL, Conch. Sam., III, 1890, p. 150. * Mya ovata DONOVAN, Brit. Shells, IV, 1802, pl. cxxi1.!'—* MATON and RACKETT, Tr. Linn. Soc. Lond., VIII, 1807, p. 39.—*-Woop, Gen. Conch., I, 1815, p. 105, pl. xix, fig. 5.—* Drttwyn, Cat., I, 1817, p. 50.—?TurRToN, Conch. Dict., 1819, p. 106.—*Woobp, Ind.Test., 1825, p. 12, pl. 11, fig. 27¢; * rev. ed., 1856, p. 16, pl. 1, fig. 27.—* CHENU, Bib. Conch., Ist ser., I, 1845, p. 82, pl. xx xu, figs. 1-3. * Mysca ovata TURTON, Conch. Ins. Brit., 1822, p.246; Man. Shells Brit. Is., 1831, p- 21, fig. 12.—* Swanson, Treat. on Mal., 1840, p. 277, fig. 56. * Mysca solida TuRtTON, Conch. Ins. Brit., 1822, p. 246, pl. xvi, fig.2; Man. Shells Brit. Is., 1831, p. 22, fig. 13. * Mya ovalis MONTAGU, Test. Brit., 1803, p. 34.—* FLEMING, Hist. Br. Anim., 1828, p. 416. *Unio ovalis Brown, L. and F. W. Conch., 1836, p. 101, pl. xvii, figs, 4,5; Il. Rec. Conch., 1844, p. 82, pl. xxx1, figs. 12-14.—* Leacu, Syn. Moll. Gt. Br., 1852, p. 322. *Margarita (Unio) ovalis LEA, Syn., 1836, p. 35; 1838, p. 24 . “Unio muelleri ROSSMASSLER, Icon., VITI, 1838, p. 41, pl. XL, fig.541; XI, 1842, p. Loa pl awh etion 139. *Unio pictorum Brown, Ill. Ree. Conch., 1844, p. 81, pl. xxx1, figs. 8-11. Northern and middle Europe; eastern Siberia. UNIO TURTONI Payraudeau. *Unio turtont PAYRAUDEAU, Cat. Moll. Corse, 1826, p. 65, pl. 11, fig. 65.2—* PHIL- IPPI, Moli. Sic., 1836, p. 67.—*ROSSMASSLER, Icon., VII, 1838, p. 25, pl. Xx xv, fig. 492.—* CaTLow and REEVE, Conch. Nom., 1845, p. 65.—* REQUIEN, Cat. Coq. Corse, 1848, p. 29.—* Dupuy, Hist. Moll. Franc., 1852, p. 651, pl. xxvn, fig. 17.—* PauLuuccl, Bull. Soc. Mal. It., V, 1879, p.107.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 160.—* Pa&TEL, Conch. Sam., III, 1890, p. 170. “Unio capigliolo PAYRAUDEAU, Cat. Moll. Corse, 1826, p. 66, pl. 11, fig. 4.—*Ross- MASSLER, Icon., V and VI, 1887, p. 22, pl. xxtv, fig. 341; XII, 1844, p. 28, pl. LVH, figs. 755, 756.—* Moquin-TANDON, Moll. Terr. Fluy. Fr., I, 1855, p. 574, . pl. L, figs. 38, 4.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 146.—* Pare Conch. Sam., ITI, 1890, p. 147. “Unio capigliolo var. bondini Pa TEL, Conch. Sam., ITI, 1890, p. 147. ' First described by Lister in Historia Animalinm Anglizw, 1678. *This has often been confounded with U. pictorwm, but is generally more rhomboid, higher at the posterior part of the ligament, and more plainly marked at the rest periods than that species. 686 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. *Unio pictorum GUERIN, Icon. Regne Anim., II, 1829-1844, pl. xxvin, fig. 16.— * BOURGUIGNAT, Mal. Alg., II, 1864, p. 292, pl. xxu, figs. 6-11.—* REEVE, Conch. Icon., XVI, 1865, pl. xxv, fig. 125. * Unio requientti MICHAUD, Comp. Hist. Nat. Moll. Fr., 1831, p. 106, pl. xv1, fig. 24.— * ROSSMASSLER, Icon., III, 1836, p. 24, pl. x11, fig. 198.—*GRaAs, Moll. Isere, . 1840, p. 21.—* STaBILF, Faun. Lug., 1845, p. 62, pl. m1, fig. 1786.—* GasstEs, Moll. Agen., 1849, p. 195, pl. 1, figs.4, 5.—* Dupuy, Hist. M. Fr., 1852, p. 652, pl. xxvu, fig. 18.—* KusrEr, Conch. Cab. Unio, 1854, p. 126, pl. xx1, fig. 7; XXVI, figs. 1-3; Xxxvil, figs. 2-4.—* Drouet, Nay. Fr., II, 1857, p. 93, pl. vu, figs. 1-3.—* Mousson, Coq. Terr. Fluy. Pal., 1861, p.66.—* DrouEt, Moll. Cote @Or, 1867, p. 102.—* BenorT, Mus. Cat. Sic., 1881, p. 170.—* CLEssin, Moll. Oest., 1887, p. 731, fig. 494.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 121.— * PmreL, Conch. Sam., III, 1890, p. 165. *Unio lobata Puiuipri, Moll. Sic., 1836, p. 67. *Unio bandanit ROSSMASSLER, Icon., V, 1837, p. 22, pl. xxiv, fig. 341. * Unio pallens ROSSMASSLER, Icon., XI, 1842, p. 13, pl. Lrv, fig. 740.'—* WESTER- LUND, Faun. Pal., II, Pt. 7, 1890, p. 114. *Unio hispanus ROSSMASSLER, Icon., XII, 1844, p. 26, pl. Lv1, fig. 747.—* BouR- GUIGNAT, Moll. Peu. Con., 1863, p. 46, pl. xxiv, figs. 1-3.—* BOURGUIGNAT, Rev. et Mag., XVII, 1865, p. 344, pl. x x11, figs. 1-3.—* Pa TEL, Conch. Sam., III, 1890, p. 155.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 139. *Unio aleroni COMPANYO and Massot, Bull. Soc. Pyr. @’Or, VI, Pt. 2, 1845, p. 234, fig. .—* BouRGUIGNAT, Moll. Peu. Con., 1863, p. 49, pl. xx1II, figs. 1-3; Rey. et Mag., XVII, 1865, pl. x1x, figs. 1-3. *Unio rousiti DuPuY, Hist. Moll., VI, 1852, p. 653, pl. x vu, fig. 18.—* MUSGRAVE, Phot. Conch., 1863, pl. 11, fig. 7. * Unio valentinus ROSSMASSLER, Icon., III, 1854, p. 37, pl. Lxrx, p. 852.—* Bour- GUIGNAT, Moll. Peu. Con., 1863, p. 45, pl. xxvit; Rev. et Mag. Zool., XVII, 1865, p. 343, pl. xx.—*WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 140.— * PasrEL, Conch. Sam., III, 1890, p. 171. ; * Margaron (Unio) valentinus La, Syn., 1870, p. 52. * Unio ardusianus MOQUIN-TANDON, Hist. Moll. Fr., II, 1855, p. 575.2—* WESTER- LUND, Faun. Pal., I], Pt. 7, 1890, p. 109.—* Locarp, Coq. de Franc., 1893, p. 205. *Unio graellsianus BOURGUIGNAT, Moll. Peu. Con., 1863, p. 47, pl. xxi, figs. 4-7; *Rev. et Mag., 1865, p. 345, pl. xrx, figs. 4-7.—* WESTERLUND, Faun. Pall Di PtSi s90s spe tO: *?Unio letourneuxt BOURGUIGNAT, Mal. Alg., 1864, p. 289, pl. xvu, fig. 47.— *WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 58.—* Pare, Conch. Sam., III, 1890, p. 157. *Unio courquinianus BOURGUIGNAT, Moll. Peu. Con., 1863, p. 48; *part, Rev. et Mag., 1865, p. 346, pl. xxu, figs. 1, 2. *Unio siculus SOWERBY, Conch. Icon., XVI, 1868, pl. LXXx1, fig. 364.° *Unio ravoisiert var. issericus KOBELT, Icon., new ser., I, 1884, p. 65, pl. XXVIII, fig. 215,—*WESTERLUND, Faun. Pal., Il, Pt. 7, 1890, p. 142. “Unio alexandri KoBELT, Icon., Ist sup., 1895, p. 14, pl. m1, fig. 2. Entire circummediterranean region. 1 Credited by Rossmassler to Parreyss. I do not know where the latter described it or whether he described it at all. 2Moquin-Tandon credits this to a letter from Reynies, 1843, and gives a reference to p. 5, pl. 1, figs. 6, 7, of the letter. I do not know that this was ever published. He makes it a variety of requienii. 3This is Potamida sicula Swainson according to Sowerby. I refer Swainson’s shell to Unio pictorum, 4 NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 687 tUNIO RAVOISIERI Deshayes.! *Unio ravoisieri DESHAYES, Hist. Nat. Moll. Aceph. Alg., 1848, pl. ovim, figs. 4-7.2-—* BOURGUIGNAT, Mal. Alg., 1864, p. 291, pl. xx, figs. 5-10.—* Px&Tet, Conch. Sam., III, 1890, p. 165.—*WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 142. *Margaron (Unio) ravoisieri LEA, Syn., 1870, p. 48. *Unio morcleti DESHAYES, Hist. Moll. Alg., 1848, pl. crx, figs. 1-4; cxun, fig. 5.—* KOBELT, Icon., new ser., II, 1886, p. 4, pl. Xx x11, fig. 228.—* WrsTER- ° LUND, Faun. Pal., II, Pt. 7, 1890, p. 141.—*PaTeEL, Conch. Sam., ITI, 1890, p. 160. *Margaron ( Unio) moreleti LEA, Syn., 1870, p. 60. *? Unio maccarthyanus BOURGUIGNAT, Moll. Peu. Con., 1886, p. 221, pl. xxxIv, figs. 8-11.—*WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 57.—*PaTEL, Conch. Sam., III, 1890, p. 158. Algiers. tUNIO MUSSOLIANUS Kuster. * Unio mussolianus KUSTER, Conch. Cab. Unio, 1861, p. 244, pl. LXXx1I, fig. 1.°— *Pas1EL, Conch. Sam., III, 1890, p. 160. *Unio bourguignatianus LEA, Pr. Ac. N. Sci. Phila., VII, 1863, p. 189; *J1. Ac. N. Sei. Phila., VI, 1866, p. 54, pl. xvin, fig.51; *Obs., XI, 1867, p. 55, pl. x v1u1, fig. 51.— “WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 178.—*PazTxEL, Conch. Sam., III, 1890, p. 146. *Margaron (Unio) bourguignatianus LEA, Syn., 1870, p. 39. *Unio rasus La, Pr. Ac. N. Sci. Phila., VII, 1863, p.189; *Jl. Acad. N. Sci. Phila., VI, 1806, p. 50, pl. xvul, fig. 47; *Obs., XI, 1867, p. 54, pl. xvi, fig. 47.— *PmTEL, Conch. Sam., III, 1890, p. 165. *Margaron ( Unio) rasus LEA, Syn., 1870, p.58. *Unio mosulensis Lea, Pr. Acad. N. Sci. Phila., VII, 1863, p.190; *J1. Acad. N. Sci. Phila., VI, 1866, p.52, pl. xvit, fig. 49; *Obs., XI, 1867, p.56, pl. xvul1, fig. 49. *Margaron (Unio) mosulensis LEA, Syn., 1870, p. 48. *Margaritana mossulensis P@TEL, Conch. Sam., III, 1890, p. 173. Assyria. UNIO HUETI Bourguignat. “Unio huetti BoURGUIGNAT, Rev. et Mag., VII, 1855, p. 332, pl. vu, figs. 1-4.— VON MARTENS, Vorderas. Conch., 1874, p. 35, pl. vul, fig.54.—*P TEL, Conch. Sam., III, 1890, p. 155.—*WrESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 171.4 Asia Minor. 1 Doubtfully distinet from U. turtoni. It is not quite so rhomboid as that species, which is also found in Algiers, but I have seen much intermediate material which hints at a connection of the two. *The magnificent work in which this species with other Uniones was figured was never finished, and no descriptions of the Naiades were written. The beautiful col- ored figures are wonderfully characteristic and are accompanied by names. * Credited to Parreyss in catalogue. ‘This is quite likely only a variety of the preceding, but seems to be thinner and is more evenly elliptical. Von Martens believes it to be the same as Lea’s mosulensis. 688 PROCEEDINGS OF THE NATIONAL MUSEUM. --VOL. XXII. UNIO EUCIRRUS Bourguignat. * Unio eucirrus BOURGUIGNAT, Mag. Zool., IX, 1857, p. 20, pl. vii, figs. 4-6.— * KOBELT, Icon., VII, 1880, p. 82, pl. cov1, fig. 2101.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 171.—* PaTeL, Conch. Sam., III, 1890, p. 152. * Margaron (Unio) eucirrus Lea, Syn., 1870, p. 46. Asia Minor. Probably a form of hueti. tUNIO TIGRIDIS Bourguignat.! * Unio truncatus SWAINSON, Zool. [ll., 2d ser., I, 1829, pl. x.—* HANLEY, Test. Moll., 1842, p. 187; * Biv. Shells., 1843, p. 187.—* CaTLow and REEVE, Conch. Nom., 1845, p. 64.—* H. and A. ADAMS, Gen. Rec. Moll., IT, 1857, p. 496.—* SowErRBy, Conch. Icon., XVI, 1868, pl. LXXXxv, fig. 453. * Margarita (Unio) truncatus LEA., Syn., 1836, p. 21; 1838, p. 18. * Margaron (Unio) truncatus LEA, Syn., 1852, p. 26; 1870, p. 39. * Unio tigridis BouURGUIGNAT, Test. Nov. Saul., 1852, p. 30; * Cat. Rais. Moll., 1853, p- 77, pl. 1v, figs. 7-9.—* Kuster, Conch. Cab. Unio, 1861, p. 227, pl. Lxxvit, fig. 1.—* KoBELT, Icon., new ser., II, 1886, p. 2, pl. XXXII, fig. 226.—* WEsTER- LUND, Faun. Pal., II, Pt.7, 1890, p. 175.—* Pare, Conch. Sam., III, 1890, p. 169. * Unio dignatus Lea, Pr. Ac. N. Sci. Phila., VII, 18638, p. 189; *Jl. Acad. N. Sci. Phila., VI, 1866, p. 51, pl. xvul, fig. 48; *Obs., XI, 1867, p. 55, pl. xvu, fig. 48,— *PHTEL, Conch. Sam., III, 1890, p. 150. * Margaron (Unio) dignatus LEA, Syn., 1870, p. 39. * Margaron (Unio). tigris LEA, Syn., 1870, p. 39. Unio tigris FERUSSAC, manuscript. ” *2Unio kisonis KOBELT, Icon., Ist sup., 1895, p. 17, pl. vii, figs. 2, 3.8 Asia Minor; Assyria. UNIO PIETRI Locard. *Unio pietri LOCARD, Comptes Rendus, XCI, 1880, p.500; “Arch. Mus. Lyon, ITI, 1883, p. 210, pl. xx, figs. 17-19.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 170. * Unio petroi Pa TEL, Conch. Sam., III, 1890, p. 163. * Unio lorteti LOCARD, Comptes Rendus, XCI, 1880, p.502; *Arch. Mus. Lyon, ITI, 1883, p. 215, pl. xx1, figs. 7-12.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 173. * Unio tristrami Locarp, Arch. Mus. Lyon, III, 1883, p. 209, pl. xx, figs. 15, 16.— * P&TEL, Conch. Sam., III, 1890, p. 170.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 170. * Unio tiberiadensis LoCARD, Arch. Mus. Lyon, III, 1883, p. 216, pl. x x1, figs. 13-15.—- *Pa&TEL, Conch. Sam., III, 1890, p. 169.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, sp. 174. ‘Swainson gave the name Unio truncatus to this species in-1829, but that name had been applied to a Unio by Spengler in 1793. Bourguignat credits this to Ferussac manuscript under the name of Unio tigris. °Lea credits this to Ferussac manuscript in museum at Paris. No description has ever been published, so far as I know, though several authors have cited it and cred- ited it to Ferussac. A specimen in the Lea collection which is no doubt authentic is apparently a delicate young tigridis. Young shells, and it is very hard to say whether they are tigridis or terminalis. — Se er eS No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 689 * Unio prosacrus LOCARD, Arch. Mus. Lyon, III, 1883, p. 219, pl. x x1, figs. 16, 17.— *WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 174. * Unio axiacus Locarp, Arch. Mus. Lyon, III, 1883, p..242, pl. xx, figs. 20-23.— *PmTEL, Conch. Sam., III, 1890, p. 145.—* WESTERLUND, Iaun. Pal., IT, Pt. el SQOs pn denO: * Unio subtigridis Locarpb, Arch. Mus. Lyon, III, 1883, p. 245, pl. xx1, figs. 18-20.— * WESTERLUND, Faun. Pal., II, Pt. 7, 1899, p. 175.—* Pasrex, Conch. Sam., IIT, 1890, p. 168. * Unio aremprosthus LocarD, Arch. Mus. Lyon, III, 18838, p. 246, pl. xx1, figs. 21- 93.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 175. *Unio chantri LocArD, Arch. Mus. Lyon, III, 1885, p. 247, pl. xxu, figs. 1-7.— *P TEL, Conch. Sam., III, 1890, p. 147.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 176. Asia Minor. UNIO ZABULONICUS Locard. 2 * Unio zabulonicus Locarpb, Arch. Mus. Lyon, III, 1883, p. 220, pl. xxu1, figs. 11-18.— * WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 177.—* P“# TEL, Conch. Sam., III, 1890, p. 172. *Unio antiochianus Locarp, Arch. Mus. Lyon, III, 1883, p. 249, pl. xxm, figs. 14- 16.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 176. Asia Minor. + UNIO TERMINALIS Bourguignat. * Unio terminalis BOURGUIGNAT, Test. Noviss., 1852, p. 31; * Cat. Rais. Moll., 1853, p. 76, pl. u1, figs. 4-6; *JI. de Conch., IV, 1853, p. 74, pl. 11, figs. 10’ 10’".—* Mous- SON, Coq. Terr. et Fluv. Pal., 1861, p. 65.—* KOBELT, Icon., IV, 1876, p. 65, pl. CXIx, fig. 115.—*PatrL, Conch. Sam., III, 1890, p. 169.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 174. * Margaron (Unio) terminalis LEA, Syn., 1870, p. 39. Lake Tiberias. UNIO GRELLOISIANUS Bourguignat. * Unio grelloisianus BOURGUIGNAT, Rey. et Mag., VIII, 1856, p. 227, pl. Xt, figs, 1-4; Moll. Peu. Con., 1863, p. 74, pl. xx1u, figs. 4-7.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, pp. 140, 173.— *PasTeL, Conch. Sam., III, 1890, p. 154. * Unio lunulifer BoURGUIGNAT, Rey. et Mag., VIII, 1856, p. 227, pl. x1, figs. 5-8.— *WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 177.—* P&TEL, Conch. Sam., III, 1890, p. 158. * Margaron (Unio) lunulifer Lea, Syn., 1870, p. 37. * Unio jordanicus BOURGUIGNAT, Rev. et Mag., VIII, 1856, p. 228, pl. x, figs. 1-4.— *Mousson, Coq. Terr. Fluv. Pal., 1861, p. 66.—* PareL, Conch. Sam., III, 1890, p. 156.—* WESTERLUND, Faun. Pal., II, Pt.7, 1890, p. 172. * Margaron (Unio) jordanicus LEA, Syn., 1870, p. 44. Jordon River. 1All these so-called species of Locard, some of which he credits to the manuscripts of Bourguignat and Lortet, have high beaks placed at some distance from the anterior end, are wedge-shaped and more or less pointed posteriorly. I think it quite probable that all of them, together with the next species, are mere variations of Bourguignat’s old U. terminalis. Of course Locard has figured every possible variation and distor- tion and called it a species. Proce. N. M. vol. xxii——44 690 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, SXIL UNIO ELLIPSOIDEUS Locard. * Unio ellipsoideus LocaRb, Arch. Mus. Lyon., III, 1883, p. 211, pl. xx1, figs. 1-3.!— *WESTERLUND, Faun. Pal., Il, Pt. 7, 1890, p. 171.—* PasTEL, Conch. Sam., III, 1890, p. 151. * Unio genezarethensis LOCARD, Arch. Mus. Lyon., III, 1883, p. 218, pl. xx1, figs. 4-6.—* Pare, Conch. Sam., III, 1890, p. 153.—* WESTERLUND, Faun. Pal.; JO, IP iis To eNO), Wo LIA * Unio jauberti LOCARD, Arch. Mus. Lyon., III, 1883, p. 248, pl. xxu, figs. 8-10.— *“Pa#TEL, Conch. Sam., III, 1890, p. 155.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 176. * Unio zabulonicus KOBELT, Icon., new ser., VI, 1893, p. 96, pl. CLX XIX, fig. 1129. “Unio lortiti KOBELY, Icon., Ist sup., 1895, p. 14, pl. v, fig. 3. * Unio kobelti ROLLE, Icon., Ist sup., 1895, p. 15, pl. vi. fig. 3. *Unio pietri KOBELT (part), Icon., Ist sup., 1895, p. 16, pl. vi, figs. 1, 2. “Unio herodes KOBELT, Icon., Ist sup., 1895, p. 17, pl. v1, fig. 4. Lake Tiberias. tUNIO DELICATUS Lea.? *Unio delicatus LEA, Pr. Acad. N. Sci. Phila., VII, 1863, p. 189.—*J1. Acad. N. Sci. Phila., VI, 1866, p. 58, pl. xix, fig. 56.—*Obs., XI, 1867, p. 62, pl. XIX, fig. 56.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 178.—* Pa TEL, Conch, Sam., III, 1890, p. 150. *Margaron (Unio) delicatus Lua, Syn., 1870, p. 42. Orontes River, Syria. (Group of Unio littoralis.) Shell rather solid, subinflated, rounded rhomboid, with a faint pos- terior ridge, usually slightly biangulate behind and often becoming arcuate when old; beaks prominent and full; beak sculpture consisting of numerous rather fine, subparallel ridges or corrugations which are sometimes a good deal broken up, and which extend well out on the disk, but begin at the beaks as normal, somewhat coarse Unio sculpture, sometimes with fine radial lines posteriorly; pseudocardinals rather solid, subcompressed, smooth below; laterals straight or slightly curved; cavity of the beaks rather deep; muscle scars distinct. I have never seen the soft parts of any member of this group. Quite a number of descriptions have been published of various nominal species, most of which go into details as to the color of the different parts, but do not give an atom of information as to real characters. The animal is dark or highly colored, and seems to be gravid in sum- mer, and no doubt carries the young in the outer gills alone. Gills large, wider behind, inner the larger, especially in front; mantle thick- ened at the edges; palpi very large, elliptical, rounded behind, hanging at an angle of 45°; branchial opening large, strongly fringed.’ 1] think this is a form of grelloisianus. Some forms of the latter are very much like U. tigridus Bourguignat, but he says that it has roughened beaks while those of tigridis are always smooth. 2I have only seen the type, a young shell, and its relations are doubtful. The sharp, rather pustulous, beak sculpture, and the shining, yellowish epidermis are like the pictorum group, but its form is peculiar. It may not come from Syria at all. From a figure in Mal. d’Algérie, II, pl. xrx. : No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 691 tUNIO LITTORALIS Lamarck.! * Unio littoralis LAMARCK, Syst. An. sans Vert., 1801, p. 114.—* DRaparNaup, Tab. Moll. Fr., 1801, p.101; “Hist. Moll. Fr., 1806, p. 135, pl. x, fig. 20.—* MiL- LET, Moll. Maine et Loire, 1813, p. 74.—*BRaRp, Hist. Coq., 1815, p. 229.— “CuUVIER, Régne Animal, II, 1817, p.473.—* Lamarck, An. sans Vert., VI, 1819, p: 76.*—DESHAYES, Enc.. Méthod., Il, 1827, p. 151, pl. coxtv11l, fig. 2,—*Mr- CHAUD, Comp. Hist. Moll. Fr., 1831, p. 110.—*L&a, Obs., I, 1834, p. 201.—*Gou- PIL, Hist. Moll. Sarthe. 1835, p. 83.—*PuHILiprl, Moll. Sic., 1836, p. 66.—*Ross- MASSLER, Icon., V, 1837, p. 21, pl. xxiv, fig. 340.—*TERVER, Cat. Moll. Terr. et Iluv., 1839, p. 39.—*SowrERBy, Conch, Man., 1839, fig. 145..—*Gras, Moll. Isere., 1840, p. 72, pl. v, fig. 20.—*HaNn_ey, Test. Moll., 1842, p. 201; “Biv. Shells, 1843, p. 201, pl. xx1, fig. 13.—*CaTLow and REEVE, Conch. Nom., 1845, p- 60.—*PuTON, Moll. Vosges., 1847, p.74.—*Gassins, Mol]. Agenais, 1849, p. 197.—*Dupuy, Hist. Moll. Fr., 1852, p.632, pl. xx, fig.8; xx1v, figs. 5, 6, 8.—*ROssMASSLER, Icon., III, 1854, p. 37, pl. Lx1x, fig. 850.—*DRoUET, Nay. Fr., II, 1857, p. 66, pl. m, figs. 1,2.—*H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 493.—*Mousson, Coq. Terr. Fluy. Pal., 1861, p. 64.—*REEVE, Conch. Icon., XVI, 1865, pl. xxu1, fig. 98.—*WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 52.—*P £TEL, Conch. Sam., ITI, 1890, p. 157. * Unio littoralis var. minor ROSSMASSLER (part), Icon., XI, 1842, p. 14, pl. Ly, figs. 743, ? 747.2 * Unio littoralis var. acarranicus KOBELT, Icon., IV, 1879, p. 40, pl. CLXI, fig. 1638. * Unio littoralis var. pianensis KOBELT, Icon., VI, 1888, p. 48, pl. CLXIH, fig. 1648. “ Margarita (Unio) litoralis Lua, Syn., 1836, p. 32; 1838, p. 22. * Margaron (Unio) litoralis Lea, Syn., 1852, p. 34; 1870, p. 54. * Umi litoralis var. wumbonatus ROSSMASSLER, Icon., XII, 1844, p. 27, pl. Lv1, fig. 754. * 2Unio granosus SCHUMACHER, Ess. Nouv. Syst., 1817, pl. u, fig. 1.3 * Unio brevialis LAMARCK, An. sans Vert., VI, 1819, p. 73.—* Lra, Obs., I, 1834, p. 200.+ “ Unio nana LAMARCK, An. sans Vert. VI, 1819, p. 76.—* Lua, Obs., I, 1834, p. 202.—* CaTLow and REEVE, Conch. Nom., 1845, p. 61.—* WESTERLUND, Faun. IPelos JUL IP 5 USI 10); | Oe toto * Unio rubens MENKE, Syn., 1830, p. 149.—* RossMassLER, Icon., V and VI, 1837, p. 56, pl. XxIXx, fig. 412. : * Unio subtetragona Micuavp, Comp. Hist. Moll. Fr., 1831, p. 111.—* Gras, Moll. Isere., 1840, p. 21. * Unio subtetragonus CATLOW and REEVE, Conch. Nom., 1845, p. 64.—* Dupuy, Hist. Moll. Fr., 1852, p. 634, pl. xx1v, fig. 7. ‘Lamarck refers this in the Animaux sans Vertébres first to his Systeme An. sans Vertébres, published in 1801, and thirdly to Draparnaud (Ilist. Moll. Fr.,1806). Dra- parnaud published this species under the name Unio littoralis without a figure in the Tableau Mollusques de France, 1801, which appeared, according to Moquin-Tandon, about July 1 of that year. I do not know which has priority, but Lamarck refers to a characteristic figure in the Encyclopédie Méthodique (1797), thus fixing the species without a doubt, and as he is most generally considered its author I shall eredit it to him. 2 Fig. 743 is a small U. littoralis. I think 747 is U. batavus. 5Only a partial inside view is given of two valves. Schumacher says it very much resembles U. corrugatus Retzius, but is larger, and the teeth are very different. I believe it isa U. littoralis. ‘Lamarck refers this species to the Isle of France. Sganzin states (Mém. Soc. Hist. Nat. Strasb., 1840-46, p. 8) that the amateurs he consulted in that island assured him that no such mollusk was found there. According to Lea it is Unio littoralis. 692 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. “Unio incurvus LEA, Tr. Am. Phil. Soc., LV, 1831, p. 97, pl. x11, fig. 27; *Obs., I, 1834, p. 107, pl. x11, fig. 27.—* CHENU, Ill. Conch., 1858, pl. x1, figs. 1, la, 10. Unio draparnaldi DESHAYES, Desc. Coq. Terr., 1831, p. 38, pl. X1v, fig.6.—* Pa TEL, Conch. Sam., ITT, 1890, p. 151. “Unio pianensis FARINES, Ann. des Sci. Nat., IT, 1854, p. 118.—* MGLLER, Syn. Nov. Gen., 1836, p. 197.—* Dupuy, Hist. Moll. Fr., 1852, p. 635, pl. xx1v, fig. 4. *Unio bigerrensis MILLET, Guer. Mag., 1845, p. 3, pl. LXIV, fig. 1. * Unio bigorrensis LOCARD, Coq. de Franc., 1893, p. 153. “Unio fellmani DESHAYES, Hist. Nat. Moll. Alg., 1848, pl. cviul, figs. 8, 9.— *KusTEeR, Conch. Cab., 1856, p. 151, pl. xu1v, fig. 1.—* H. and A. ADAMS, Gen. Rec. Moll., IJ, 1857, p. 491.—* Pa Tet, Conch. Sam., III, 1890, p. 152. *Margaron (Unio) fellmani LEA, Syn., 1870, p. 46. *Unio barrandii Durty, Hist. Moll. Fr., 1852, p. 635, pl. xxv, fig. 1. *Unio astierianus Dupuy, Hist. Moll. Fr., 1852, p. 636, pl. x x11, fig. 9. —* SOWERBY, Conch. Icon., XVI, 1868, pl. LXxxvi; fig. 461.—* WrsTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 53.—* Locarp, Coq. de Franc., 1893, p. 153. *Unio cuneatus ROSSMASSLER, Icon., XIII and XIV, 1854, p. 37, pl. UXIx, fig. 851.— *P#TEL, Conch. Sam., III, 1890, p. 149. “Unio rhomboideus MOQUIN-TANDON, Moll. Terr. Fluv. Fr., I], 1855, p. 568, pl. XLVUI, figs. 4,9; xix, figs. 1,2.—*BourGuiGNaT, Mal. Alg., 1864, II, p. 284, pl. xvi; Rev. et Mag., XVIII, 1866, p.11.—* Locarn, Coq. de Franc., 1893, p. 152, fig. 165. * Unio rothi BOURGUIGNAT, Moll. Nonv., 1863, p. 41, pl. xx, figs. 1-6; Rev. et Mag., XVII, 1865, p. 337, pl. xv1.—* KoOBELT, Icon., VI, 1879, p. 40, pl. cxx1, fig. 1639.—* Pa TEL, Conch. Sam., III, 1890. p. 166.—* WESTERLUND, Faun. Pal., Il, Pt. 7, 1890, p. 59. * Unio umbonatus BOURGUIGNAT, Moll. Nouv., 1863, p. 42, pls. XxI, Xx11; * Rev. et Mag., XVII, 1865, p. 339, pls. Xv11, XVUII.—* WESTERLUND, Faun. Pal., II, Pt.-7, 1890, p. 54. * Unio subreniformis BOURGUIGNAT, Moll. Nouv., 1863, p.43; Rev. et Mag., XVII, 1865, p. 340.—* KOBELT, Icon., IV, 1876, p. 64, pl. oxv111, fig. 1151.—*WESTER- LUND, Faun. Pal., II, Pt. 7, 1890, p. 54: * Unio ater REEVE, Conch. Icon., X VI, 1865, pl. xx1, fig. 19. * Unio crassus REEVE, Conch. Icon., XVI, 1865, pl. xxu1, fig. 98. * Unio valentinus SOwERBY, Conch. Icon., X VI, 1866, pl. X11, fig. 225. *Unio mauritanicus BOURGUIGNAT, Moll. Nouv., 1868, p. 317, pl. xiv, figs. 1-5.— * KOBELT, Icon., II, new ser., 1886, p.5, pl. xxx1u1, fig. 230.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 56. * Unio ksibianus Mousson, Mal. Blatt., XXI, 1873, p. 156; * Jahrb. Deuts. Mal. Ges., I, 1874, p. 104, pl. v, fig.6.—* KonELt, Icon., IV, new ser., 1876, p. 65, pl. CXIXx, fig. 1153.—* Pare, Conch. Sam., III, 1890, p. 156.—* WrsTERLUND, Faun. Pal., II, Pt. 7, 1890. * Unio jolyi KOBELT, Icon., new ser., II, 1886, p. 22, pl. X11, fig. 256.—* Pa: TEL, Conch. Sam., III, 1890, p. 156.—*WersTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 57. * Unio maccarthyanus KOBELT, Icon., new ser., II, 1886, p.5, pl. xxx, fig. 229. * Unio letourneauxt KOBELT, Icon., new ser., II, 1886, p. 3, pl. XXxu, fig. 227. * Unio lycicus ROLLE, Icon., 1st sup., 1895, p. 18, pl. 1, fig. 1. Southern Europe; Asia Minor; Assyria; Morocco; Algiers. +UNIO DELESSERTI Bourguignat:! Unio delesserti BOURGUIGNAT, Voy. Mer. Mort., 1852, p. 77; Test. Nov. Saul., 1852, p. 29; *Cat. Rais. Moll., 1853, p. 77, pl. 111, figs. 7-9.—* Rou, Mal. Blatt., 1856, 1 Approaches U. littoralis, and may be only a variety of that, but is not so elon- gated. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 693 I, p. 57.—* P&TEL, Conch. Sam., III, 1890, p. 150.—* WESTERLUND, Faun. Pails, JUL Wethe ey TBO) joo ILA * Margaron ( Unio) delesserti LEA, Syn., 1870, p. 46. Syria. +UNIO SEMIRUGATUS Lamarck.! * Unio semirugatus LAMARCK, An. san. Vert., VI. 1819, p.76.—* DELESSERT, Rec. Coq. Lam., 1841, pl. x11, figs. 6, 6a, 6b. *tUnio emesaensis La, Pr. Acad. N. Sci. Phila., VIII, p.286; Jl. Acad. N. Sci. ohare Vell S63 paso, ple exexexe to G80 Obs, XM S69 sph 14 lx xx, fig. 68.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p.61.—* PaTrEx, Conch. Sam., III, 1890, p. 151. * Margaron (Unio) emesaensis LEA, Syn., 1870, p. 57. t* Uniosimonis TRISTRAM, Pr. Zool. Soc. Lond., 1865, Pt. 2, p.544.2—* Locarp, Arch. Mus. Lyon, III, 1883, p. 239, pl. xx, figs. 1-3.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 60.—* Pa TEL, Conch. Sam., III, 1890, p. 167.—* KoBELT, Icon., new ser., VI, 1893, p. 91, pl. CLXXvI, fig. 11215 first supp., 1895, p. 18, pl. 111, figs. 1-3. *Unio luynesi Locarp, Arch. Mus. Lyon, III, 1883, p. 205.—* Parent, Conch. Sam., III, 1890, p. 158. *Unio galilwi Locarp, Arch. Mus. Lyon, ill, 1883, p. 206, pl. xx, figs. 10-12.3— WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 60.—* KOBEL1, Icon., 1st sup., 1895, p. 20, pl. vu, figs. 4, 5. *Unio timius Locarp, Arch. Mus. Lyon, III, 1883, p. 207, pl. xx, figs. 13, 14.— *P#TEL, Conch. Sam., III, 1890, p. 169.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 61. *Unio rhomboidopsis LOCARD, Arch. Mus. Lyon, III, 1883, p. 239, pl. xx, figs. 7-9.— ; *“P2&TEL, Conch. Sam., III, 1890, p. 165.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 61. * Unio rollei KOBELT, Icon., lst supp., 1895, p. 20, pl. 1v, figs. 1, 2. *Unio trache KOBELT, Icon., 1st supp., 1895, p. 21, pl. vita, fig. 2.4 “Unio wagneri KOBEL?, Icon., 1st supp., 1895, p. 22, pl. vil, figs. 1, 2. Asia Minor. tUNIO HOMSENSIS Lea. “Unio homsensis Lea, Proc. Acad. Nat. Sci. Phila., VIII, 1864, p. 285; Jl. Acad. Nat. Sci. Phila., VI, 1868, p. 249, pl. xx1x, figs. 63; *~Obs., XII, 1869, p.9, pl. XXIX, fig. 63.—*Locarp, Arch. Mus. Lyon., III, 1883, p. 275.—* Pars, Conch. Sam., III, 1890, p. 155.—* WrsTERLUND, Faun. Pal. II, Pt. 7, 1890, p. 62. *Margaron (Unio) homsensis La, Syn. 1870, p. 31. Syria. 1 Lea and Ferussac both referred this to littoralis after examining Lamarck’s shells. I have seen specimens in the collection of the former from the Jardin des Plantes, Paris, which are, no doubt, authentic, and which, I think, perhaps, are specifically different from littoralis, being much shorter and more rounded. 2A specimen of thisin the U.S. National Museum collection, from Tristram, labeled as above, is the same as Lea’s examples of semirugatus. Published as Unio maris-galilwi in list in Comptes Rendus, XCI, p. 502; but not described. 4Some of these approach very close to specimens of U. littoralis, especially to the form called U. rothi Bourguignat, which I have placed in that species, and I should not be surprised if there was an absolute connection between the short, rounded forms of U. semirugatus and the longer rhomboid JU, littoralis. 694 PROCEEDINGS UF THE NATIONAL MUSEUM. VoL. XXI. UNIO PSEUDONYMUS Simpson.! * Unio hueti KOBELT, Icon., new sevr., II, 1886, p. 22, pl. x1, fig. 225. Euphrates and Tigris rivers. t UNIO FERUSSACIANUS Lea. *Unio ferussacianus La, Jl. Acad. Nat. Sci. Phila., VI, 1868, p. 255. Footnote to description of U. emesaensis.—* Lua, Obs., XII, 1869, p. 15. Footnote. *Margaron (Unio) ferussacianus LEA, Syn., 1870, p. 46. Bagdad. UNIO EPISCOPALIS Tristram. *Unio episcopalis TRISTRAM,? Pr. Zool. Soc. Lond., 1865, p. 544.—Von MARTENS Vorderas. Conch., 1874, p. 68.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 62.—*P TEL. Conch. Sam., If], 1890, p. 151.—* Koper, Icon., VI, new ser., 1893, p. 89, pl. CLxxv, fig. 1119. Orontes River, Syria. tUNIO DURIEUI Deshayes. *Unio duriewt DESHAYES, Hist. Nat. Moll. Alg. Atlas, 1847, pl. crx, figs. 5-8.2— 30URGUIGNAT, Mol. Alg., II, 1864, p. 288, pl. x1x, figs. 4-8.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 142.—* PareL, Conch. Sam., III, 1890, p. 151. *Margaron ( Unio) durieut LEA, Syn., 1852, p. 39; 1870, p. 48. * Unio sitifensis MORELET, JI. de Conch., II, 1851, p. 360. Unio orientalis BOURGUIGNAT, Test. Noviss., 1852, p. 29. *Unio bruguierianus BOURGUIGNAT, Cat. Rais., 1853, p. 78, pl. 11, figs. 54-58.— * WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 172.—* Paren, C. Sam., III, 1890, p. 146. *“Margaron (Unio) bruguierianus LEA, Syn., 1870, p. 44. *Unio vescoti BOURGUIGNAT, Rev. et. Mag., VIII, 1856, p. 74, pl. 11, figs. 4—8.4— * KXOBELT, Icon., IV, 1876, p. 66, pl. CXIX, fig. 1154.—*WESTERLUN -, Faun. Pal., II, Pt. 7, 1890, p. 152.—* PTE, Conch. Sam., III, 1890, p. 171. *Margaron (Unio) vescot LEA, Syn., 1870, p. 46. *Unio schwerzenbachi BOURGUIGNAT, Kev. et Mag., VIII., 1856, p. 75, pl. viu, figs. 1-5.—* Kuster, Conch. Cab. Unio, 1862, p. 266, pl. xc, fig. 2.—* SOwEnBY, Conch. Icon., XVI, 1868, pl. xiv, fig. 241.—*KoOBELT, Icon , VII, 1880, p. 81, pl. cevi, fig. 2099.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 95. *Unio prusii BOURGUIGNAT, Rev. et Mag., VIII, 1856, p. 76, pl. 111, figs. 1-4. * Unio damascensis LEA,°® Proc. Acad. Nat. Sci. Phila., VII, 1863. p. 190; Jl. Acad. 1 Kobelt supposed this to be the U. hueti of Bourguignat, and figured and described it for that species. It is, however, very distinct, and I therefore am compelled to give it a new name. 2Tristram only describes this in Latin, and does not figure it; and as I have never seen an authentic specimen I am obliged to depend on Kobelt’s figure, which agrees well with Tristram’s diagnosis. These make it a large, somewhat sulcate form, shaped like batavus, but more compressed and having a beautiful purple nacre. 3 There does not seem to be any essential difference between the Algerian and the Syrian shells, which I have referred to this species. 4 Bourguignat says he has received numerous specimens of this from Drouet, labeled U. turcicus Parreyss, but Parreyss’s names. were only in manuscript, and were never published, and have therefore no scientific standing. 5 Only the type is in the Lea collection, and it appears to be a delicate specimen of duricui. _ No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON,. 695 Nat. Sci. Phila., VI, 1866, p. 55, pl. xvul, p.52; *Obs., XI, 1869, p. 59, pl. Xvi, fig. 52.—*PaTeL, Conch. Sam., III, 1890, p. 150.—* WesrERLunp, Faun. Pal., II, Pt. 7, 1890, p. 178. * Margaron ( Unio) damascensis Lua, Syn., 1870, p. 52. * Unio orontesensis Lua, Pr. Acad. Nat. Sci. Phila., VII, 1863, p. 190; Jl. Acad. Nat. Sci. Phila., V1, 1866, p. 53, pl. xviul, fig. 50; * Obs., XI, p.57, pl. xv1u1, fig. 50.— *“ WESTERLUND, J'aun. Pal., II, Pt. 7, 1890, p. 178.—P TEL, Conch. Sart. SDE. 1890, p. 162. * Margaron ( Unio) orontesensis LEA, Syn., 1870, p. 52. *Unio orphaensis Lea, Pr. Acad. Nat. Sci. Phila., vee 1864, p. 285; Jl. Acad. Nat. Sci. Phila , VI, 1868, p. 250, pl. xx1x, fig. 64; *Obs., XII, 1869, p. 10, pl. XXIXx, fig. Gt. _-* Wrst ERLUND, Faun. Pal. pO, 1th 7, 1890, p. 179.—* Paren Conch. Sons ILI, 1890, p. 162. * Margaron Gane) ouphachets Lra, Syn., 1870, p. 52. * Unio mardinensis Lea, Pr. ivan Nat. Sci. Phila., VIII, 1864, p. 286; *Jl. Acad. Nat. Sci. Phila., VI, 1868, p. 252, pl. xxx, fig. 66; *Obs., XII, 1869, p. 12, pl. XXX, fig. 66.—* WuSTERLUND, Faun. Pal., II., Pt. 7, 1890, p. 179. * Margaron (Unio) mardinensis Lea, Syn., 1870, p. 53. . tUNIO DURIEUI var. KULLETHENSIS Lea. * Unio kullethensis LEA, Pr. Acad. Nat. Sci. Phila., VIII, 1864, p. 285; * Jl. Acad. Nat. Sci. Phila., VI, 1868, p. 251, pl. xxix, fig, 65; *“Obs., XII, 1869, p. 11 pl. xxIx, fig. 65.—* Wenn, Faun. Pal., II, Pt. 7, 1890, p. 178. * Margaron ( Unio) kullethensis LEA, Syn., 1870, p. 53, * Unio kallethensis and kullinthensis PasTEL, Conch. Sam., III, 1890, p. 156. 7 Algiers; Tunis; Asia Minor, Assyria; Southeastern Europe. +UNIO SYRIACUS Lea.! “Unio syriacus Lea, Pr. Acad. Nat. Sci. Phila., VII, 1863, p. 189; * J1. Acad. Nat. Sci. Phila., VI, 1866, p. 56, pl. x1x, fig. 53; *Obs., XI, 1867, p. 60, pl. xIx, fig. 53.—* WESTERLUND, Faun. Pal., IJ, Pt. 7, 1890, p. 178.—* PareL, Conch. Sam., III, 1890, p. 169. * Margaron (Unio) syriacus LEA, Syn., 1870, p. 35. Orontes River, Syria. UNIO BYTHINICUS Kobelt. *Unio bythinicus KOBELT, Icon. new gone VI, 1893, p. 96, pl. CLXXIX, fig. 1128. Asia Minor. UNIO MICELII Kobelt. *Unio micelii KOBELT, Nach. Mal. Ges., XVI, 1884, p. 182; Icon., new ser., II, 1886, p. 24, pl. XLUI, figs. 260, 261. Tunis. +UNIO EMARGINATUS Lea.? *Unio emarginatus LEA, Tr. Am. Phil. Soc., V, 1834, p. 62, pl]. 1x, fig. 22; *Obs., I, 1834, p. 174, pl. 1x, fig. 22 'T have only seen a single, badly eroded specimen, the type, but it seems to differ from anything I know. It probably belongs to this group. 2Lea’s only shell, the type, consists of two opposite, odd valves. One of these may possibly be an elongated batavus, the other appears distinct. 696 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. “Margarita ( Unio) oie La. Sous 1838, p. 26. “Margaron (Unio) emarginatus LEA, Seam, 1852, p. 39; 1870, p. 62. Locality unknown. I have no doubt that it belongs Sonne nEne | in the circummediterranean region. +UNIO CARNEUS Kuster. “Unio carneus KustTErR, Conch. Cab. Unio, 1854, p.103, pl. xxviut, figs. 1, 2.— *DrovuEt, Mem. Acad. Dijon, VII, 1882, p. 23, reprint.—* Parr, Conch. Sam., III, 1890, p. 147. “Unio gontierti BOURGUIGNAT, Rev. et Mag., IX, 1857, p. 16, pl. Iv, figs. 1-4.— *WESTERLUND, I’aun. Pal., II, Pt. 7, 1890, p. 67. *Margaron (Unio) gontiert Lua, Syn. 1870, p. 44. * Unio penchinatianus BOURGUIGNAT, Moll. Peu. Con., 1863, p. 44, pl. xxv; * Rey. et Mag., XVII, 1865, p. 342, pl. xx1.—* KoOBELT, Icon., IV, 1876, p. 66, pl. CXIX, fig. 1155. Southern Europe. +UNIO BATAVUS Maton and Rackett. *“? Mya pictorum GMELIN, Syst. Nat., 13th ed., 1788, p. 3218'.—* Donovan, Brit. Shells, V, 1803, pl. cLxx1v.—* ? CHENU, Bib. Conch., 1st ser., I, 1815, p. 114, pl. xtvu, figs. 8, 9. * Unio pictorum DRAPARNAUD, part, Hist. Moll. Fr., 1806, p. 131, pl. x1, figs. 1-4.? * Mya batava Maton and RackeEtTt,? Tr. Linn. Soc. Lond., VIII, 1807, p. 37.— “Woop, Gen. Conch., I, 1815, p. 303, pl. x1x, figs. 1, 2.—*Diztwyn, Cat., I, 1817, p. 49.—* TurTON, Conch. Dict., 1819, p. 105.—*Woobp, Ind. Test., 1825, p. 12, pl. m1, fig. 250; rev. ed., 1856, p. 15, pl. m1, fig. 25. * Unio batava LAMARCK, An. sans Vert., VI, 1819, p. 78.1—C. PFEIFFER, Nat. L. and Suss. Moll., Pt. 1, 1821, p. 119, pl. v, fig. 14.—* DrsHayEs, Enc. Méth., Il, 1827, p. 151, pl. cexnyin, fig. 3; Il, 1830, p. 584, pl. ceoxuvul,) figs 3:— *WAARDENBERG, Com. Hist. Nat. An., 1827, p. 36.—* KLEEBERG, Moll. Bor., 1828, p. 38.—* FLEMING, Hist. Brit. Moll., 1828, p. 416.—* Srarx, Nat. Hist., II, 1828, p. 90.—* Micuaub, Comp. Hist. Moll. Fr., 1831, p. 109.—* Gourit, Hist. Moll. Sarthe, 1835, p. 83.—* FourRNEL, Faun. Moselle, I, 1836, p. 487.— “Gras, Moll. Isere., 1840, p. 21.—*CaTLow and REEVE, Conen Nom., 1845, p. 56.—* Puron, Moll. Vosges, 1847, p. 75. “Mysca batava TURTON, Conch. Ins. Brit., 1822, p. 244.—*TurToNn, Man. L. and F. W. Shells, Brit. Is., 1831, pl. xx. fig. 10. * Unio batavus NILSSON, Hist. Moll. Svec., 1822, p. 112.—* RossMASSLER, Icon., II, 1835, p. 20, pl. vill, figs. 128, 1284, 128; III, 1836, pp. 28, 32, pl. xrv, fig. 205; XV, fig. 214; V and VI, 1837, p. 56, pl. xx1x, fig. 414; XI, 1842, p. 14, pl. Lv, fig. 745.—~ DRONE L.and F. W. Conch., 1836, p. 111, pl. xv111, figs. 6-8; XxXx1, figs. 10, 11.—*? ANTON, Verz. der Conch., 1839, p. 15. SHANLy, Test. Moll. , 1842, } Ghai refers to the figure by Chemnitz in Conchylien Cabinet, VI. This feue is probably a light-colored batavus. * Tig. 3 is certainly batavus, and figs. 1 and 2 may be. * Maton and Rackett de not figure their species, but refer to several figures. The first is in Ginanni, Opere Postume, 1755, pl. rv, fig. 17. This work I have not seen. The figures referred to in Schréter’s Flussconchylien, in Chemnitz, and the Eneyclo- pédie Methodique (pl. 248, tig. 3) are what we understand as U. batavus, the latter being the one cited by Lamarck. ‘Lamarck does not figure his species, but refers to plate CCXLvil, fig. 3, in the Encyclopédie Méthodique, which is the species commonly known as Unio batavus. No. 1205. SYNOPSIS OF THE NATAD EK 697 p. 195; * Biv. Shells, 1843, p. 195.—*ScHouz, Schleis. L. and W. Moll., 1843, p. 133.—* Brown, Il. Recent Conch., 1844, p. 82, pl. xxxX1, figs. 3, 3a, 4-6.—* Dupuy, Hist. Moll. Fr., 1852, p. 638, pl. xxv, figs. 14, 15.—*KusTrr, Conch. Cab. Unio, 1854, p. 121, pl. xxx, figs. 4-7; xxx1vy, figs. 1, 2.— *VON WAHL, Suss. Biv. Liv., 1855, p. 96.—* MoQuin-TANDON, Moll. Terr. et Fluy. Fr., I], 1855,.p.571, pl. xurx, figs. 7, 8.—* Drourt, Nay. Fr., II, 1857, p- 79, pl. vi, fig. 1.—*H.and A. Apams, Gen. Rec. Moll., II, 1857, p. 493.— *BIELZ, Faun. Sieben, 1863, p. 193.—* BourGurianaT, Mal. Alg., 1864, p. 286, pl. XIx, fig. 9; xx, figs. 1-4.—*“Sowrrsy, Conch. Icon., XVI, 1866, pl. xi, fig. 234.—* Bror, Coq. Fam. Nay. Leman, 1867, p. 49, pl.1x, figs. 1-5.—* Ko- BELT, Faun. Nass. Moll., 1871, p.242.—* Leuman, Die Schnecken, 18738, p. 295.—* CLESSIN, Deutsche Ex. Moll., 1876, p. 463, fig. 302.—* Drovurr, Mem. Acad. Dijon, VII, 1882, p. 18 (reprint).—* CLrssin, Moll. Oest., 1887, p. 741.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 74.—* PaTrL, Conch. Sam., III, 1890, p. 145.—* LocarD, Coq. de Fr., 1893, p. 167.—* WESTERLUND, Act. Soc. F. and F. ¥., XIII, No. 7, 1897, p. 162. *Margarita (Unio) batavus LEA, Syn., 1836, p. 26; 1838, p. 20. *Margaron (Unio) batavus Lma, Syn., 1852, p. 30; 1870, p. 47. *Unio batavi var.? ROSSMASSLER, Icon., V and VI, 1837, p. 55, pl. xxrx, fig. 410. *Unio. nanus Dupuy, Hist. Moll. Fr., 1852, p. 640, pl. xxv, fig. 16.—* Kone zr, Icon., VI, 1879, p. 42, pl. cLxu, figs. 1642, 1643.—* Locarp, Coq. de Fr., 1893, p. 154, fig. 168. *Unio riparia C. Prrtirrir, Nat. L. and $. Moll., 1821, Pt. 1, p. 118, pl. v, fig 13.—* KLEEBERG, Moll. Bor., 1828, p. 39. *Unio riparius SCHOLZ, eos L. and W. Moll., 1843, p. 129.—* WrsTERLUND, Haun. Pal., Il, Pt. 7, 1890, p. 90.—* Locarp, ‘Coa de Er, 18935 py 164: *? Unio crassus ee Hist. Moll. Svec., 1822, p. 108. __TAgsisuunserae. cons la, 1835, p. 19, pl. vitt, figs. 126, 1272; V and VI, 1837, p. 55, pl. XXXIX, fig. 411.— Moquin-Tanpon, Moll. Terr. and Fluv. Fr., II, 1855, p.570; III, pl. xurx, figs. 3, 4.—* NORDENSKIOLD and NYLANDER, Fin. Moll., 1856, p. 84, pl. v1, fie. 72.—* DrovurET, Nay. Fr., II, 1857, p. 76, pl. 1v, ig. 2.—* WrstERLUND, Faun. Sw., N. and Den., 1873, p. 569.*—* Locarp, Coq. de Fr., 1893, p. 162, fig. 176.—* WESTERLUND, Acta Soc. I. and F. F., XIII, No. 7, 1897, p. 159. ~*Unio crassus variety batavus JORDAN, Jahrb. Deuts. Mal. Ges., VI, 1879, p. 307. *Unio ater Niusson, Hist. Moll. Svec., 1822, p. 107.—*RossMassLeEr, Icon., IT, 1835, p. 23, pl. 1x, fig. 183; VII and VIII, 1838, p. 41, XL, fig. 543.—*Scnorz, Schleis. L. and I’. W. Moll., 1843, p. 131.—* KustTER, Conch. Cab. Unio, 1854, p. 114, pl. xx, figs.1, 2, 6; xxx, figs. 1-4.—* Moguin-TaNnpon, Moll. Yerr. et Fluv. Fr., 11, 1855, p. 570, pl. XLIx, figs. 5, 6.—*DRovuET, Nay. Fr., Il, 1857, p. 72, pl. 1v, fig. 1; Mem. Acad. Dijon, VII, 1882, p. 14 (reprint).— *WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 65.—*Pa:TEL, Conch. Sam., III, 1890, p. 145.—*LocaRp, Coq. de Fr., 1893, p. 176.—*WESTERLUND, Act. Soc. 15 NCL INS Io, ROOIE IN@s We UN, Wwe Wed *Unio atra DESHAYES, Encye. Meth., II, 1830, p. 582. Unio rugatus MENKE, Syn. Moll., 1828, p. 90.—*RossmMass.LER, Icon., V and VI, IcsI1G) Dp (5 OIG o-abs<5) 1ilfers 415. *Unio elongata MicHAUD, Comp. Hist. Moll. Fr., 1831, p. 118, pl. xv1, fig. 29. *Unio labacensis ROSSMASSLER, Icon., JOG, ake. 5) Zale ‘Nilsson claims that this is Retzius’ species, and that it is found in the rivers of Sweden. His Latin description is so brief that nothing can be made out of it. I have no doubt that he had Unio batavus before him when he wrote it. 21 believe that this is a rather large batavus and the figures are almost exactly like those he gives of that species. °Claimed to be crassus of Retzius, but he gives U. ater of Nilsson as one variety and batavus Lamarck as another. 698 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. *Unio decurvatus ROSSMASSLEI aan, ni 1835, p. 22; ple ix tig. 1311; VW and! Vil; 1837, p. 21, pl. xxtv, fig. 339.—* Kuster, Conch. Cab. Unio, 1856, p. 108, pl. xxx, figs. 1, 2.—*MusGrave, Phot. Conch., 1863, pl. 11, fig. 4.—SowEnrby, Conch. Icon., XVI, 1867, pl. LVt, fig. 284.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 92.—Pa&TEL, Conch. Sam., III, 1890, p. 150. *Unio reniformis ROSSMASSLER, Icon., IIT, 1836, p. 31, pl. XV, fig. 213.—* SCHOLZ, Schleis, L. and W. Moll., 1843, p. 1582.—* KustTr1 , Conch: Cab. Unio, 1854, * p. 110, pl. xxx, figs. 3, 4.—* BOURGUIGNAT, Roe et Mag., 1865, pl. xx111, figs. 4-6.—* SowERBY, Conch. Icon., XVI, 1868, DL UNS, eho 371.—* Wrst- ERLUND, Faun. Pal., II, Pt. 7, 1890, P 80.—* Locanp, Coq. de Fr., 1893, p. 161. * Unio carinthiacus ROSERIASETOR, Icon., III, 1836, p. 30, pl. xv, fig. 309. 1_* Sow- ERBY, Conch. Icon., XVI, 1856, pl. xxx, fig. 157; ~P#rsL, Conch. Sam., III, 1890, p. 147. ATL @eATe, Coq. de Fr., 1893, p.- 167. “Unio amnicus ROSSMASSLER, Icon., III, 1836, p. 31, pl. xv, fig. 212.—* KusrER, Conch. Cab. Unio, 1856, p. 99, pl. xxvul, fig. 2.—*DRovurtT, Mem. Acad. Dijon, VIII, 1882, p. 22 (reprint).—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 89.—* Locarp, Coq. de Fr., 1893, p. 163, fig. 177. * Unio piscinalis ROSSMASSLER, Icon., III, 1836, p. 30, pl. xv, fig. 210.—* LOcARD, Coq. de Fr., 1893, p. 160. * Unio atrovirens ROSSMASSLER, Icon., III, 1836, p. 28, pl. xv, figs. 206, 207.— ScumiptT, Bull. Imp. Soc. N. H. Moscow, 1840, p. “Unio consentaneus ROSSMASSLER, Icon., III, 1836, p. 29, pl. xv, fig. 208; VII, 1838, p. 25, pl. XxxvV, fig. 491; p. 42, xu, fig. 544; XI, 1842, p. 14, pl: Lv., fig. 742, * Unio fusculus ROSSMASSLER, Icon., III, 1836, p. 30, pl. xv, fig. sD oni, Conch. Sam., III, 1890, p. 153.—* Locarp, Coq. de Fr., 1893, p. 159, fig. 173. “Unio? ROSSMASSLER, Icon., III, 1836, p. 27, pl. xiv, fig. 201. * Unio stevenianus DROUET, Unionide Russ., 1881, p. 14;? Jl. de Conch., XXIX, 1881, p- 24; Supp. Un. Serbie, 1884, pls. 1, 11.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 66.—* KoBELT (part), Icon., new ser., II, 1886, p. 38, pl. Lu, fig. 281.° *Unio bandini KustErR, Icon., V and VI, 1837, p. 22, pl. xxtv, fig. 341. *Unio glaucinus PoRRO, Mal. Como., 1838, p. 115.—* CaTLow and REEVE, Conch. Nom., 1845, p.59.—*STABILE, Faun. Lug., 1845, p. 61, pl. m1, fig. 75.—* KOBELT, Icon., new ser., II, 1886, p. 19, pl. XL, fig. 251.—*Pa:TEL, Conch. Sam., III, 1890, p. 154.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 90. *Unio gargotte ROSSMASSLER, Icon., VII, 1838, p. 26, pl. Xxxv, fig. 493.—* Mon- TEROSATO, Nat. Sic., new ser., 1896, p. 6, fig. 1. ? Unio corrugata MANDUYT, Moll., Vienna, 1839, p. 8. ? Unio rotundata MANDUYT, Moll., Vienna, 1839, p. 9.4 ?Unio gangrenosus SCHMIDT, Bull. Imp. N. H. Moscow, 1840, p. .—* Kuster, Conch. Cab. Unio., 1854, p. 124, pl. xxx1v, figs. 3, 4.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 81.—* P&# TE, Conch. Sam., ITI, 1890, p. 153. Unio pruinosus SCHMIDT, Bull Soc. Nat. Mose., 1840, p. 445.—* Drougt, Jl. de Conch., X XIX, 1881, p. 248; *Mem. Acad. Dijon, VII, 1882, p. 21 (reprint).— *PxATEL, Conch. Sam., III, 1890, p. 164.—* WerEsTERLUND, Faun. Pal., II, t. 7, 1890, p. 82.—* LocaRD, Coq. de Fr., 1893, p. 160. *Unio littoralis var. minor ROSSMASSLER (part), Icon., XI, 1842, p. 14, pl. Ly, fig. 744. 1Rossmassler credits this and several other species to Zeigler. So far as I am able to learn these are mere manuscript names. Neither Moquin Tandon or Locard. give Zeigler as an author in their bibliographies of writers on French mollusks, and Lea refers only to his manuscript. I have not seen his Systematisches Verzeichniss. 2Generally credited to Krinické, who published the naked name in Bull. Nat. Mosce., 1857. 3 Fig, 280, said to be this, is probably U. twmidus. 4 Both these species of Manduyt are batavus? according to Moquin Tandon. > fa pili xe —— tT D No. 1205. SYNOPSIS OF THE NAIADE SIMPSON. 699 * Unio manca MILLET, Guer. Mag., 1843, p. 4, pl. LXIv, fig. 2. *Unio mancus Dupuy, Hist. M. Fr., 1852, p. 642, pl. xxv1, fig. 17.—*Locarp, Coq. Fr., 1893, p. 156, fig. 170. *Unio moquinianus Dupuy, Moll. Gers., 1843, p. 89, pl.—* RossMaAssLER, Icon., XII, 1844, p. 31, pl. tix, fig. 769.—*KustErR, Conch. Cab. Unio, 1854, p. 100, pl. xxvu1, figs. 3, 4, 5.—* Dupuy, Hist. Moll. Fr., 1852, p. 644, pl. xxv1, fig. 18.—* Moquin-TANDOn, Moll. Terr. and Fluy. Fr., 1855, p. 573, pl. 1, figs. 1, 2.—* Dupuy, Rev. et Mag., VIII, 1856, p. 75.—* DrouET, Nay. Fr., II, 1857, p. 88, pl. vi, fig. 3.—* PasrTEL, Conch. Sam., III, 1890, p. 159.—* Wustrr- LUND, Faun. Pal., II, Pt. 7, 1890, p. 146.—* Locarpb, Coq. de Fr., 1893, p.179. *Unio requient ROSSMASSLER, Icon., XII, 1844, p. 29, pl. Lvu, figs. 757-761.— * KUSTER (part), Conch. Cab. Unio, 1856, p. 126, pl. xx xvV1, fig. 2.! —* Moquin- ~Tanpon, Moll. Terr. et Fluv. Fr., II, 1855, p. 574, pl. u, figs. 5-7.—* KoBE.T, Jcon., VI, 1879, p. 43, pl. crxim, fig. 1647.—* Locarp, Coq. de Fr., 1893, p. 190. *Unio sandri RASSMASSLER, Icon., XII, 1844, p. 26, pl. Lv1, figs. 748-750.—* KusTER, Conch. Cab. Unio, 1856, p. 101, pl. Xx vU, figs. 6, 7.—* SowERBY, Conch. Icon., XVI, 1868, pl. Lxx1x, fig. 413.—*PaTEL, Conch. Sam., III, 1890, p. 166.— * WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 93. 2 Unio aleront COMPANYO and Massor, Bull. Soc. Agr. Sc. Pyr. d’Or, VI, Pt. 2, 1845, p. 234, fig. 2.—* KOBELT, Icon., IV, 1876, p. 64, pl. cx vim, fig. 1150.2 Unio badius KOKEIL, Mich. Comp., 1851, pl. Xv1, fig. 36.—*CarLow and REEVE, Conch. Nom., 1845, p. 56.—KoxkEIL, Gallenst. Kiirnt. Conch., 1852, p. ?.° *? Unio wolwichtti MORELET, Moll. Port., 1845, p. 105, pl. x11, fig. 1. Unio jacquemini Dupuy, Cat. Ext. Gall. Test., 1849, No. 328.—*Dupuy, Hist. M. Pr., 1852, p. 643, pl. xxv, fig. 17.—*KoBELT, Icon., VI, 1879, p. 42, pl. cuxm, fig. 1641.—*WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 128.——*Locarp, Coq. Fr., 1893, p. 188. Unio droueti Dupuy, Cat. Ext. Gal. Test., 1849, No. 327; Hist. Moll. Fr., 1852, p. 639, pl. xxv, fig. 14. Unio philippi Dupuy, Cat. Ext. Gal. Test., 1849, No. 335; Hist. Moll. Fr., 1852, p. 654, pl. xxvint, fig. 19. *Unio ovalis Dupuy, Hist Moll. Fr., 1852, p. 637, pl. xxv. fig. 18. *Unio spinellii Vitus, in Moll. Bres., 1852, p. 50, fig. D. *Unio moulinsiana Dupuy, Hist. Moll. Fr., VI, 1852, p. 640, pl. xxrv, fig. 10.— *MOQUIN-TANDON, Hist. Moll. Fr., II, 1855, p. 572.—*Locarp, Coq. de Fr., 1898, p. 152. *2 Unio petterianus KusTER, Conch. Cab., 1854, p. 97, pl. xxvil, fig. 4.—*H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 494.—*Pa TEL, C. Sam., ILI, 1890, p. 163.— *“WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 115. *Margaron (Unio) petterianus Lea, Syn., 1852, p. 31, 1870, p. 49. “Unio capigliolo KusTER (part), Conch. Cah. Unio, 1854, p. 125, pl. xxx1v, figs. 5, 6.—*SowERBY, Conch. Icon., XVI, 1868, pl. Lxxv, fig. 392.—*Duruy, Hist. Moll. Fr., 1852, p. 645, pl. xxvi, fig. 19. * Unio heldi KusTER, Conch. Cab. Unio, 1854, p. 111, pl. xxx, figs. 5-7.—*DrRouEtT, Jl. de Conch., XXIX, 1881, p. 26.—*WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 80. *Unio lucurians KustTER, Conch. Cab. Unio, 1854, p. 119, pl. xxxu1, fig.5.—* WEsT- ERLUND, Faun. Pal., II, Pt. 7, 1890, p. 94.—* Parr, C. Sam., III, 1890, p. 158. 'Kuster gives several figures of what he supposes are requieni. Part of them are turtoni, and one is possibly elongatulus Pfeifter. 2 Tt is hard to tell just what this is. Itis probably a delicate, rather compressed batarus. °> According to Lea and Westerlund this = batavus. 700 PROCEEDINGS OF THE NATIONAL MUSEUM. | VOL. XXI1. “Unio brevirostris KusTER, Conch. Cab. Unio, 1854, p.120, pl. xxx1m, figs. 1-3.— *WrSTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 96. * Unio natolicus KusTER, Conch. Cab. Unio, 1856, p. 144, pl. xxi, fig. 4.. * Unio turcicus KUSTER, Conch. Cab. Unio, 1862, p. 267, pl. xc, figs. 3, 4. *Unio merdiger REEVE, Conch. Icon., XVI, 1865, pl. xxvi1l, fig. 145.) Kurope; Asia Minor; Northwest Africa. Section LAPIDOSUS Simpson, 1900, (Type, Unio lapidosus Kobelt.?) Shell inequilateral, subtriangular ovate, large, solid, slightly inflated, with a double posterior ridge, biangulate behind; beaks high, sculpture not seen; disks strongly, irregularly suleate; epidermis olive; three thick pseudocardinals in the right valve and two in the left; laterals strong; anterior muscle scars deep, tripartite; posterior scars deep, distinet; nacre rosy white, irridescent behind. Animal unknown. UNIO LAPIDOSUS Kobelt. *Unio lapidosus KOBELT, Nach Deuts. Mal. Ges., 1895, p. 151; *“Icon., new ed., VI, 1893, p. 90, pl. cLxxv1, fig. 1120.—* Droukt, J]. de Conch., XLIII, 1895, p. 32. Euphrates River. Section ELLIPTIO Rafinesque, 1819. (Type, Unio crassidens Lamarck.) Shell elongated, rhomboid or oval, usually more or less biangulate behind; beak sculpture consisting of a few rather strong ridges, which are nearly parallel to the growth lines or slightly doubly looped; the. surface smooth or teebly corrugated. (Group of Unio coloratus.) Shell somewhat rhomboid, solid, slightly biangulate behind, rather compressed, more or less sculptured with concentric suleations; beaks moderately prominent, their sculpture unknown; epidermis brownish; teeth strong; laterals rather club-shaped; nacre white or purple. Ani- mal unknown. ?+ UNIO COLORATUS Charpentier. * Unio coloratus CHARPENTIER, in Kuster, Conch. Cab. Unio, 1856, p. 155, pl. xiv, fig. 6.—* Pare, Conch. Sam., III, 1890, p. 148.—*FiscHER and CROSSE, Miss. Sci., Pt. 7, II, 1894, p. 599. Medellin River, Vera Cruz, Mexico. ‘Credited to Jay’s Catalogue, in which it is not described, but is credited to Waltz. 2This striking shell differs very much from any of the circummediterranean forms and may be entitled to subgeneric rank, sa eats NO. 1205. SYNOPSIS OF THE NAITADES—SIMPSON. TOL UNIO CALLOSUS Lea. * Unio callosus Lea, Pr. Am. Phil. Soc. Il, 1841, p. 31; “Tr. Am. Phil. Soc., VIII, 1842p. 239, pl. xxi, fig. 545 *Obs., Tl, 1842, p. 77, pl. xxuni, fig. 54.— *ConraD, Pr, Acad. Nat. Sci. Phila., VI, 1853, p. 246.—* H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 492.—* CuENv, Ill. Conch., 1858, pl. xxv1, figs. 4, 4a, 4).—* B. H. Wricut, Check List, 1888.—*P-eTeL, Conch. Sam., ITI, 1890, p.147. * Margaron (Unio) callosus LEA, Syn., 1852, p. 33; 1870, p. 33, Said to come from the Ohio Canal below Columbus. Jam sure that the locality is wrong, and it appears to be a Mexican form. The type is not in the Lea collection. UNIO MEXICANUS Philippi. *Unio mexicanus PHILIPPI, Zeits. fiir Mal., LV, 1847, p. 95.—*-Puiviprr, Abbild. und Beschr., III, 1849, p. 110, pl. v1, fig. 3..—* Kuster, Conch. Cab. Unio, 1862, p. 285, pl. xcv, fig. 7.—*B. H. Wriaut, Check List, 1888.—*Pa7TE., Conch. Sam., III, 1890, p. 159.—* FiscHER and Cross, Miss. Sci., Pt. 7, II, 1894, p. 593. * Margaron (Unio) mexicanus Lua, Syn., 1870, p. 53. Mexico. (Group of Unio semigranosus.) Shell triangular rhomboid, solid, inflated, with a distinct posterior ridge; beaks rather full, their sculpture consisting of numerous some- _what irregular corrugations which pass into the pustulous sculpture of the shell; surface of the valves generally more or less sculptured with chevron-shaped or zigzag ridges or corrugations, which often break into pustules, the posterior slope bearing curved, radiating plications which - are likewise sometimes nodulous; epidermis dark, scarcely rayed; pseu- docardinals strong, radial, ragged; laterals heavy, obliquely striated; beak cavities not deep, compressed; muscle scars well impressed; nacre purple, with bronzy or coppery shades. Animal apparently not different from that of other related Unios. I have not seen any with the marsupium filled. + UNIO PLEXUS Conrad. * Margarita (Unio) carbonarius LEA, Syn., 1836, p. 192; 1838, p. 17.2 *Unio carbonarius LEA, Tr. Am. Phil. Soc., VI, 1838, p. 37, pl. xu, fig.382; *Obs., II, 1838, p. 37, pl. XI, fig. 32.—* TROSCHEL, Arch. fiir Naturg., V,1839, Pt. 2, p.236.— *HANLEY, Test. Moll., 1842, p. 184; * Biv. Shells, 1843, p. 184, pl. xxu1, fig. 10.—* CaTLow and REEVE, Conch. Nom., 1845, p. 57.—* CuHEnu, Il. Conch., 1858, pl. xxii, figs. 1, la, 1b.—* PaireL, Conch. Sam., III, 1890, p. 147. “Margarita (Unio) pliciferus Lua, Syn., 1836, p. 13; 1838, p. 14. “Unio pliciferus LEa, Tr. Am. Phil. Soc., VI, 1838, p. 61, pl. xvu, fig. 53; *Obs., II, 1838, p. 61, pl. xvu, fig.53.—* TRoscuHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 1A miserable figure of some rhomboidal, rather compressed form, probably group- ing with callosus. 2?The names carbonarius and pliciferus were published two years before Unio plexus, but were not accompanied by a description. Part X of the Monography appeared in May, 1838, and the transactions containing Dr. Lea’s description of carbonarius June 15, according to Scudder. Dr. Lea places his carbonarius in the synonymy of pliciferus, though the former comes first in his paper. 702 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL, 256.—* HANLEY, Test. Moll., 1842, p. 176; * Biv. Shells, 1843, p. 176, pl. xx, fig. 32.—* CaTLow and REEVE, Conch. Nom., 1845, p. 63.—* KustgEr, Conch. Cab., 1848, p. 142, pl. xu, fig. 1.—* H.and A. Apams, Gen. Ree. Moll., I, 1857, p. 497.—* CHENU, Ill. Conch., 1858, pl. xx, figs. 5, 5a,5); Manual, 1859, IT, p. 142, fig. 702.—*SowrErBy, Conch. Icon., XVI, 1868, pl. LXxv, fig. 387.— *B. H. Wriaur, Check List, 1888.—*FiscuER and Crosse, Miss. Sci., I, Pt. 7, 1894, p. 580, pl. LXV, fig. 2; Lxx, figs. 2, 2a. Margaron (Unio) pliciferus LEA, Syn., 1852, p. 20; 1870, p. 31. ~ Unio plecus CONRAD, Monog., X, 1838, p. 89, pl. XLIX, figs. 1,2; *Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 255. Vera Cruz, Mexico. + UNIO CROCODILARUM Morelet. “Unio crocodilarum MORELET, Test. Noy., I, 1849, p. 28.—~ REEv»E, Conch. Icon., XVI, 1864, pl. x, fig. 37.—* Pa TEL, Conch. Sam., III, 1890, p. 149.—* Fischer and CROSSE, Miss. Sci., Pt. 7, II, 1894, p.577, pl. ux, fig. 35 Lxvul, fig. 3. * * ? Unio rusticus SOWERBY, Conch. Icon., XVI, 1868, pl. LxIv, fig. 324. Rio Usumacinta, Guatemala. UNIO MORINI Morelet. “Unio morint MORELET, Test. Nov., II, 1851, p. 24.—* FiscHER and Crosss, Miss. Sci., Pt. 7, II, 1894, p. 576, pl. ux, fig. 2; Lxvu, fig. 4. Rio Usumacinta, Guatemala. UNIO SEMIGRANOSUS von dem Busch, “Unio semigranosus VON DEM BUSCH (in Philippi), Abbild. und Besch., I, 1845, p. 19, pl. 1, figs. 1-3.—* CaTLow and REEVE, Conch. Nom., 1845, p. 64.— * ConrRAD, Pr. Acad. N. Sci. Phila., VI, 1853, p. 257.—* HANLEY, Biv. Shells, 1856, p. 381, pl. xx, fig. 33.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 497.—* KusTER, Conch. Cab. Unio, 1861, p. 252, pl. LXxxv, fig. 1.—*B. H. WriGut, Check List, 1888.—* FiscHER and CRossE, Miss. Sci., Pt. 7, II, 1894, p. 569. * Margaron ( Unio) semigranosus LEA, Syn., 1852, p. 20; 1570, p. 34. * Unio carbonarius var. semigranosus P&@TEL, Conch. Sam., III, 1890, p. 147. Mexico, Vera Cruz to Tampico. + UNIO CORIUM Reeve.! * Unio corium REEVE, Conch. Icon., XVI, 1864, pl. Xx, fig. 39.—* PaiTEL, Conch. Sam., III, 1890, p. 149.—* FiscoerR and Crosse, Miss. Sci., Pt. 7, IL, 1894, p. 570. State of Chiapas, Mexico. UNIO TESTUDINEUS Morelet. * Unio testudineus MORELET, Test. Nov., I, 1849 p. 28.2—FIscHER and CROSSE, MissaiScit, Rta, lil 18945. oily plese xclis fo3)-sEXexe ho oe * Unio semigranosus REEVE, Conch. Icon., XVI, 1864, pl. x, fig. 36. Rio Usumacinta, Guatemala. 1 Probably a mere variety of semigranosus. It is quite likely that when a sufficient amount of material is examined this and some other species of this group will have to be placed in the synonymy. 2¥ischer and Crosse think that testudineus is perhaps only a local race of semigra- nosus. I think it is quite likely they are right. — ae i ee No. 1205. SYNOPSIS OF THE NALADES—SIMPSON. 703 +tUNIO PSORICUS Morelet. * Unio psoricus MORELET, Test. Nov., Pt. 2, 1851, p. 25.'\—* FIscHER and Crossz, Miss. Sci., Pt. 7, II, 1894, p. 572, pl. uxt, fig. 2. Rio Usumacinta, Guatemala. (Group of Unio gibbosus.) Shell solid, compressed or inflated, triangular ovate to elongate ovate, arcuate when old, gibbous above, pointed or slightly biangulate behind, with a moderate posterior ridge; beaks low, the sculpture con- sisting of a few very strong ridges which run parallel with the growth lines; epidermis dull and clothlike; pseudocardinals strong, rough; laterals granular or verticaily striated, club-shaped; beak cavities very shallow; one or more slight furrows or ridges occur in the cavity of the shell which run nearly parallel with the laterals; muscle scars very deep and distinct. Marsupium occupying the entire outer gills; branchie large, curved below, inner the wider except at the posterior end, free from the abdominal sac only part of their length; mantle very thin, with thick- ened edges; branchial opening generally large. tUNIO GIBBOSUS Barnes. * Unio nasuta LAMARCK,? An. sans Vert., VI, 1819, p. 75.—* DESHAYEs, An. sans Vert., 2d ed., VI, 1835, p. 538; 3d ed., II, 1839, p. 669. ~ Unio nasutus AGASsiIz, Arch. fiir Nat., I, 1852, p. 50. * Unio gibbosus BARNES, Am. Jl]. Sci., VI, 1823, p. 262, pl. x1, fig. 12.3—* HiIL- DRETH, Am. Jl. Sci., XIV, 1828, p. 286.—SuHoRT and Earon, Transylvania J1., 1831, p. 78.—* HaNnuEy, Test. Moll., 1842, p. 207; Biv. Shells, 1843, p. 207, pl. xx, fig. 54.—*CarLow and REEVE, Conch. Nom., 1845, p. 59.— *KusrEerR, Conch. Cab. Unio, 1852, p. 28, pl. 1v, figs. 3, 4.—*H. and A. ADAMS, Gen. Rec. Moll., IT, 1857, p. 491.—* SowErRBy, Conch. Icon, XVI, 1868, pl. Lx x1, fig. 379.—* CaLkIns, Pr. Ottawa Ac. Sci., 1874, p.42.—* LATCHFORD, Tr. Ottawa F. N. Club, 1882, p. 50.--* B. H. Wrieut, Check List, 1888.— * P#TEL, Conch. Sam., III, 1890, p. 153.—* BAKER, Moll. Chicago, 1898, p. 70, pl. xtv, figs. 3, 4; xv, figs. 1-4. Margarita Unio gibbosus LEA, Syn., 1836, p. 38; 1838, p. 25. * Margaron (Unio) gibbosus LEA, Syn. 1852, p. 38; 1870, p. 61. * Mya gibbosa Eaton, Zool. Text-Book, 1826, p. 220. *Unio mucronatus BARNES, Am. J]. Sci., VI, 1823, p. 266, pl. x11, fig. 13 (out- line).—* AG@assiZ, Arch. fiir Naturg., I, 1852, p. 50. * Mya mucronata EATON, Zool. Text-Book, 1826, p. 221. 1 Probably another variety of semigranosus. This name was given by Lamarck to the species under consideration before that of Barnes, but Say had already used the name nasutus for a Unio, hence gibbosus must be used. 5In 1820 Rafinesque bestowed the name Amblema gibbosa on some unionoid mollusk which I can not determine. Since then Conrad in 1836, and others after him, have used the specific name as of Rafinesque and applied it to a Unio, which they have figured and described. Barnes applied the name in 1823, properly characterizing it, and it must stand, because at that time it had not been used in the genus Unio. 704 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXL * Unio dilalatus SAy,! Am. Conch., VI, 1834.—* Conran, New F. W. Shells, 1834, p. 68.—* FeRussac, Guer. Mag., 1835, p. 27.—* Conrap, Monog., V, 1836, Tr. 42, pl. xx1.—*KusrTErR, Conch. Cab. Unio, 1852, p. 38, pl. v1, fig. 4.—* ConRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 248. * Unio torulosus FERUSSAC, Guer. Mag., 1835, p. 28. * Unio arctatus FERUSSAC, Guer. Mag., 1835, p. 29. *t Unio arctiorv LEA, Tr. Am. Phil. Soc , VI, 1838, p. 10, pl. 1v, fig. 10;2 Obs., II, 1838, p. 10, pl. 1v, fig. 10.—* TRoscHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 234.—* HANLEY, Test. Moll., 1842, p. 208; * Biv. Shells, 1843, p. 208, pl. xx, fig. 46.—* CaTLow and REEVE, Conch. Nom., 1845, p. 56.—* ConrapD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 245.—* KustEer, Conch. Cab. Unio, 1861, p. 179, pl. Lv1, fig. 6.—* H. and A. ADAMs, Gen. Ree. Moll., II, 1857, p. 491.—* CHENU, Ill. Conch., 1858, pl. x x1, figs. 2, 2a, 2b.—*? SOowERBY, Conch. Icon., XVI, 1868, pl. LXxxv, fig. 2.—* B. H. Wrieut, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 144. * Margarita (Unio) arctior LEA Syn., 1836, p. 39; 1838, p. 25. *Margaron (Unio) arctior LEA, Syn., 1852, p. 38; 1870, p. 71. + UNiO GIBBOSUS var. ARCUS Conrad. * Unio arcus CONRAD, Am. J1. Sci., XXV, 1854, p. 340, pl. L, fig. 8; * New F. W. Shells, 1834, p. 67.—* FERUSSAC, Guer. Mae., 1835, p. 29.—* MOLLER, Syn. Nov. Gen., 1836, p. 1898.—* HANLEY, Test. Moll., 1842, p. 207; * Biv. Shells, 1843, p. 207, pl. xx1u1, fig. 46.—* CaTLow and REEVE, Conch. Nom., 1845, p.56.—* ConRaD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 245.—* H.and A. ApaMs, Gen. Ree. Moll., II, 1857, p. 491.—* B. H. WreiGut, Check List, 1888.—* Pa:TEL, Conch. Sam., III, 1890, p. 144. * Margarita (Unio) arcus LEA, Syn., 1836, p.38; 1838, p. 25. *Margaron (Unio) arcus LEA, Syn., 1852, p.38; 1870, p. 61. +UNIO GIBBOSUS var. SUBGIBBOSUS Lea. *Unio subgibbosus La, Pr. Ac. N. Sci. Phila., IX, 1857, p. 169; Jl. Ac. N. Sci- Phila., TV, 1858, p.53, pl. vi, fig. 36; Obs., VI, 1858, p.53, pl. vi, fig. 36.— *B.H. Wricut, Check List, 1888.—*Srmpson, Pr. U.S. Nat. Mus., XV, 1892, p. 432, pl. Uxxvuil, fig. 5. *Margaron (Unio) subgibbosus LEA, Syn., 1870, p. 61. *Unio lazarus SOWERBY, Conch. Icon., XVI, 1868, pl. Lx v1l1I, fig. 348. * +Unio rufus LEa, Pr. Ac. N. Sci. Phila., IX, 1857, p. 171; Jl. Ac. N. Sci. Phila., 1V, 1858, p. 85, pl. xvil, fig. 65; Obs., VI, 1858, p. 85, pl. xvi, fig. 65.—* B. H. WriGuHT, Check List, 1888. *Margaron (Unio) rufus Lea, Syn., 1870, p. 61. + UNIO GIBBOSUS var. ARMATHWAITENSIS B. H. Wright. *Unio gibbosus var. armathwaitensis B. H. Wricut, Naut., XI, 1898, p. 123.% +UNIO GIBBOSUS var. DELICATUS Simpson.‘ Entire Mississippi drainage; St. Lawrence and its tributaries; Ala- bama River system; southeast into Florida; southwest to the Guada- lupe River, Texas. ‘As of Rafinesque. {am unable to make out Rafinesque’s species. 2 Merely a form with white nacre. ’ These three are dwarf varieties of gibbosus. All are often more or less humped, and there are many intermediate and connecting specimens. ‘A greatly compressed, thin variety, with an evenly elliptical outline and very dark nacre may bear this name. NO. 1205. : SYNOPSIS Ol THE NAIADES—SIMPSON. T0O5 tUNIO STFONENSIS Lea. *Unio stonensis Lua, Pr. Am. Phil. Soc., I, 1840, p. 286; * Tr. Am. Phil. Soc., VIII, 1841, p. 195, pl. vit, fig. 5; Obs., III, 1842, p. 33, pl. vu, fig. 5.—* Conran, Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.—* H. and A. ADAms, Gen. Ree. Moll., IL, 1857, p. 495.—* CHEN, Ill. Conch., 1858, pl. xxx, figs. 7, 7a, 7b.—* Sow- ERBY, Conch. Icon., XVII, 1868, pl. LXxxvVI, fig. 462.—* B. H. WRIGHT, Check List, 1888.—* P&TEL, Conch. Sam., III, 1890, p. 168. * Margaron (Unio) stonensis LEA, Syn., 1852; 1870, p. 43. Stone River, Tennessee. t UNIO LURIDUS Lea. *Onio luridus Lea, Tr. Am. Phil. Soc., X, 1852, p. 273, pl. xx, fig. 29; Obs., V, 1852, p. 29, pl. xx, fig. 29.—* ConraD, Pr. Ac. N. Sci. Phila , VI, 1853, p. 251; *H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 494.—* B. H. WRIGHT, Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p. 158. * Margaron (Unio) luridus LEA, Syn., 1852, p. 30; 1870, p. 48. Yadkin River, North Carolina; Georgia; Florida. (Group of Unio discus.) Shell large, solid, compressed, subtriangular; biangulate behind; beak sculpture not seen; beaks high, but not swollen; epidermis dark, rough; teeth heavy; laterals remote, club-shaped; nacre white, yel- low or purple. Animal unknown. +UNIO DISCUS Lea. *Unio discus Lea, Tr. Am. Phil. Soc., VI, 1838, p. 74, pl. x v111, fig.57; * Obs., IT, 1838, p. 74, pl. xv, fig. 51.—* TROSCHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 237.— *HANLEY, Test. Moll., 1842, p. 197; * Biv. Shells, 1843, p. 197, pl. xx, fig. 12.— *CaTLow and REEVE, Conch. Nom., 1845, p. 58.—*ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 248.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 494,—* CHENU, Ill. Conch., 1858, pl. x1x, figs. 6, 6a, 6b.—* SOWERBY, Conch. Icon., XVI, 1868, pl. Exu, fig. 310.—*B. H. Wricur, Check List, 1888.— * PASTEL, Conch. Sam., III, 1890, p. 151.—* FiscHER and CROSSE, Miss. Sci., Pt. 7, II, 1894, p. 567. *Margaron (Unio) discus Lea, Syn., 1852, p. 31; 1870, p. 50. * Unio panacoensis, VON DEM BUSCH in Philippi, Abbild. und Besch., I, 1843, p.75, pl. 1.—* Kuster, Conch. Cab. Unio, 1861, pl. Lxxx1, fig. 1.—* P& TEL, Conch. Sam., III, 1890, p. 162. *Unio mexicanus SOWERBY, Conch. Icon., XVI, 1867, pl. LV, fig. 281. Mexico; Central America. (Group of Unio sloatianus.) Shell rhomboid, solid, inflated, with a well-defined posterior ridge and a smaller, fainter one above, the posterior end being distinctly biangulate, nearly straight or slightly incurved on the _ base, rounded in front; beaks only slightly elevated; beak sculpture not observed ; surface of the valves covered with somewhat radiately plicate, nodulous corrugations which become less pronounced in front; posterior Proc. N. M. vol. xxii——45 706 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII slope radially plicate; epidermis dark; pseudocardinals stumpy, radial, granularly striate; laterals double in the left valve, single in the right, with a faint, secondary ridge below; anterior muscle scars deep, nearly smooth; cavity of the beaks moderate, slightly compressed. Animal unknown. t UNIO SLOATIANUS Lea. “Unio sloatianus Lea, Pr. Am. Phil. Soc., I, 1840, p. 287; Tr. Am. Phil. Soc., VIII, 1842, p. 217, pl. xvi, fig. 33; Obs., III, 1842, p. 55, pl. xvi, ie, 8o— *H. and A. ADAMS, Gen. Ree. Mol1., II, 1857, p. 497.---* CHENU, Ill. Conch. 1858, pl. xxxui, figs. 7, 7a, 7b.—* KusTER, Conch. Cab., 1862, p. 286, pl. XCVI, fig. 3.— *B. H. Wricat, Check List, 1888.—* P&TEL, Conch. Sam., III, 1890, p. 167. * Margaron (Unio) sloatianus LEA, Syn., 1852, p. 21; 1870, p. 31. * Plectomerus sloatianus CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 261. * Unio atromarginatus LEa,! Pr. Am. Phil. Soc., I, 1840, p. 288; Tr. Am. Phil. Soe., VIII, 1842, p. 207, pl. x, fig. 21; Obs., III, 1842, p. 45, pl. x1, fig. 21.— *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 488.—* CHENU, IJ]. Conch., 1858, pl. xxvii, figs. 6, 6a, 6b.—* KusTER, Conch. Cab. Unio, 1861, p. 250, pl. LXXXxIV, fig. 2.—* B. H. Wricut, Check List, 1888.—* ParreL, Conch. Sam., TIT, 1890, p. 145. * Margaron ( Unio) atromarginatus LEA, Syn., 1852, p.19; 1870, p. 29. * Plectomerus atromarginatus CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 260. * Unio aratus CONRAD, Ann. and Mag., IV, 1849, p.302; *Pr. Ac. N. Sci. Phila. IV, 1849, p. 154. * Unio plectophorus-CONRAD, J]. Ac. N. Sci. Phila., I, 1850, p. 277, pl. xxxviul, fig. 7. * Plectomerus plectophorus CONRAD, Pr. Ac. N. Sei. Phila., VI, 1853, p. 2. Chattahoochee and Flint rivers, Georgia. (Group of Unio crassidens.) Shell generally solid, rather inflated, rhomboid oval, with a sharp, well-developed posterior ridge; beaks prominent, the sculpture consist- ing of a few coarse ridges running nearly parallel with the growth lines and swollen at the posterior ridge; surface of the valves nearly smooth or only marked by growth lines; posterior slope bearing wrinkled, corrugate, radiate ridges; epidermis often faintly rayed. Animal having the branchiw very large, rounded below, inner the. larger, free nearly or quite their entire length from the abdominal sac; | branchial and anal openings large, with many small papille; marsupium occupying the entire outer gills. ! + UNIO CRASSIDENS Lamarck. *Unio crassidens LAMARCK, An. sans Vert., VI, 1819, p. 71.—* LEA, Obs., I, 1834, * p. 199.—* DESHAYES, An. sans Vert., 2d ed., VI, 1835, p. 532; 3d ed., II, 1839, p. 667.—* Haney, Test. Moll., 1842, p. 184; * Biv. Shells, 1843, p. 184, pl. xx, fig. 46.—* CaTLow and REEVE, Conch. Nom., 1845, p.58.—*H. and A. ADAMS, 'Lea’s type of sloatianus is an old, arcuate shell, while the type of atromarginatus is young and quite different looking. But the young plicate atromarginatus gradually changes into the smoother sloatianus as it crows older, and specimens of both show the dark bordered nacre, though it is more pronounced in the young shells. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 7TO7 Gen. Rec. Moll., II, 1857, p. 495.—* Cauwins, Pr. Ot. Ac. Sci., 1874, p. 42.— *B. 11. WrieuT, Check List, 1838.—* Pare, Conch. Sam., III, 1890, p. 149.— * CALL, Tr. Ac. Sci., St. Louis, VII, 1895, p. 12, pl. 11. * Margarita (Unio) crassidens Lv, Syn., 1836, p.19; 1838, p. 17. *Margaron (Unio) crassidens L¥a, Syn., 1852, p. 24; 1870, p. 37. *? Unio nigra RAFINESQUE, Ann. Gen. Sci. Brux., V, 1820, p. 291, pl. Lx xx, figs. 1-4. *Unio niger Say, Am. Conch., VI, 1834.—* Conran, New F. W. Shells, 1834, p. 70.— * PERUSSAC, Guer. Mag., 1835, p. 27.—* ConraD, Monog., VI, 1836, p. 49, pl. XXvi1.—* KustTER, Conch. Cab. Unio, 1852, p. 25, pl. 1v, fig. 1.—*AG@assiz, Arch, fiir Naturg., I, 1852, p. 50.—* Conrap, Pr. Acad.N. Sei., Phila., VI, 1853, p. 253.—* SOWERBY, Conch. Icon., XVI, 1868, pl. LX xvitl, fig. 408. *? Unio cuneatus BARNES, Am. Jl. Sci., VI, 1823, p. 263.—* HILDRETH, Am. JI. Sci., XIV, 1828, p. 279, fig. 3.—* SHorT and Eaton, Transylvania Jl1., 1831, p. 78. * Mya cuneata EATON, Zool. Text Book, 1826, p. 220. *? Unio discus SOowERBY, Conch. Icon., XVI, 1868, pl. Lx11, fig. 310. * Unio crassus SOWERBY, Conch. Icon., XVI, 1868, pl. xcv, fig. 520. Mississippi drainage generally; Alabama and Tombigbee rivers; southeast to the Chattahoochee River. In the southeastern part of its range this species seems to merge into U. incrassatus. +UNIO INCRASSATUS Lea.! “Unio incrassatus LEA, Pr. Am. Phil. Soc., I, 1840, p. 286; *Tr. Am. Phil. Soc., VIII, 1840, p. 217, pl. x v1, fig. 34; *Obs., III, 1842, p. 55, pl. xvi, fig. 34.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 495.—* CuEnu, Ill. Conch., 1858, pl. XXX, figs. 5, 5a, 5b.—* KusTER, Conch. Cab. Unio, 1861, p. 192, pl. Lx, fig. 5.— *REEVE, Conch. Icen., XVI, 1865, pl. xxvi, fig. 127.—*B. H. Wricurt, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 155. *Margaron (Unio) incrassatus LEA, Syn., 1852, p. 24; 1870, p. 37. Coosa River system; Chattahoochee and rivers of north Florida; east to Savannah ?. +UNIO POLYMORPHUS B. H. Wright. * Unio polymorphus B. H. Wricut, Naut., XIII, 1899, p. 42. Spanish Creek, Charlton County, Georgia. +UNIO FORBESIANUS Lea. * Unio forbesianus LEA, Pr. Am. Phil. Soc., V, 1852, p. 251; *Tr. Am. Phil. Soe., X, 1852, p. 264, pl. xvi, fig. 17; * Obs., V, 1852, p. 20, pl. xvi, fig. 17.—* CONRAD, Pr. Acad. Nat. Sci. Phila., VI, 1853, p. 249.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 495.—* Kuster, Conch. Cab. Unio, 1861, p. 310, pl. Lxrx, fig. 6.—* MusGraveE, Phot. Conch., 1868, pl. 1, fig. 2.—* SowERBy, Conch. Icon., XVI, 1868, pl. LXx1, fig. 361.—* B. H. Wricut, Check List, 1888.— * SIMPSON, Pr. U.S. Nat. Mus., XV, 1892, p. 410, pl. xL1x, fig. 3; L, figs. 2, 3. *Margaron (Unio) forbesianus LEA, Syn., 1852, p. 24; 1870, p. 37. *tUnio moussonianus Lea, Tr. Am. Phil. Soc., X, 1852, p. 268, pl. xvu1l, fig. 22; * Obs., V, 1852, p. 24, pl. xviil, fig. 22.—*ConrapD, Pr. Acad. N. Sci. Phila., Vi, 1853, p. 252.—* H. and A. Abams, Gen. Rec. Moll., II, 1857, p. 494.— *B. H. Wriaut, Check List, 1888.—* Pare, Conch. Sam., IIT, 1890, p. 160. * Margaron (Unio) moussonianus LEA, Syu., 1852, p. 29; 1870, p. 46. 1T am doubtful whether this is more than a small, rhomboid, southeastern variety of crassidens, bearing the same relation to it that U. subgibbosus does to U. gibbosus. 708 PROCEEDINGS OF THE NATFONAL MUSEUM. VOL. XXII. *t Unio corvus Lma, Pr. Ac. N. Sci. Phila., II], 1859, p. 112; “Jl. Acad. N. Sci., Phila., [V, 1859, p. 217, pl. xxvil, fig. 97; Obs., VII, 1859, p. 35, pl. XX vil, fig. 97.—*SoWERBY, Conch. Icon., XVI, 1868, pl. Lxxvit, fig. 411.—*B. H. WrIGHT, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 149. * Margaron ( Unio) corvus LEA, Syn., 1870, p. 37. * Unio vestitus Lma, Pr. Ac. N. Sci., Phila., V, 1861, p.393; *J1. Ac. N. Sci., Phila., V, 1862, p. 189, pl. xxv, fig. 259; * Obs., IX, 1863, p. 11, pl. xxv, fig. 259.— *B. H. WriGHT, Check List, 1888. Margaron (Unio) vestitus LEa, Syn., 1870, p. 50. Streams from the Congaree River, South Carolina, south to northern Florida. +UNIO DANIELSII B. H. Wright. *Unio danielsii B. H. WriGHT, Naut., XIII, 1899, p. 31. Spring Creek, Decatur County, Georgia. +UNIO PUSILLUS Lea. *Unio pusillus Lwa, Pr. Ac. N. Sei. Phila., 1,1840, p. 286; * Tr. Am. Phil. Soc., VIII, 1842, p. 220, pl. xviu, fig. 36; *Obs., IT, 1842, p. 58, pl. x vil, fig. 36.—* Con- RAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 256.—* H. and A. ADams, Gen. Rec. Moll., II, 1857, p. 494.—* CHENU, II]. Conch., 1858, pl. xx x11, figs. 5, 5a, 5b.— * KusvER, Conch. Cab., 1861, p. 197, pl. Lx111, figs. 3, 4.—* B. H.Wrieut, Check List, 1888.—* PaTEL, Caner Sam., ITI, 1890, p. 164.—* Simpson, Pr. U.S. Nat. Mus., XV, 1892, p. 411. pl. LI, figs. 2,6. *Margaron (Unio) pusillus LEA, Syn., 1852, p.31; 1870, p. 48. *+tUnio buxeus LEA, Tr. Am. Phil. Soc., X, 1852, p. 261, pl. xv, fig. 13; * Obs., V, 1852, p. 17, pl. xv, fig. 13.—* ConrapD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 245.— *H. and A. ADAMS, Gen. Rec. Moll., IT, 1857, p. 493.—* B. H. Wrieut, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 147. * Margaron (Unio) buxeus LEA, Syn., 1852, p. 29; 1870, p. 46. *+Unio anthonyi Lua, Pr. Ac. N. Sci. Phila., V, 1861, p.41; *Jl. Ac. N. Sei. Phila., V, 1862, p. 197, pl. xxvU, fig. 266; * Obs., IX, 1863, p.19, pl. xxvui, fig. 266.—* B. H. WRIGHT, Check List, 1888. Margaron (Unio) anthonyi, LEA, Syn., 1870, p. 43 Abbeville district, South Carolina; south to northern Florida. t UNIO MERUS Lea. * Unio merus LEA, Tr. Am. Phil. Soc., X, 1852, p. 260, pl. xv, fig. 10; * Obs., V, 1852, p. 16, pl. xv, fig. 10.—* Conran, Pr. Acad. N. Sci. Phila., VI, 1853, p. 252.—* B. H. Wricut, Check List, 1888.—* PmTEeL, Conch. Sam., III, 1890, p. 159. : * Margaron (Unio) merus LEA, Syn.. 1870, p. 54. *+ Unio castus La, Pr. Ac. N. Sci. Phila., IV, 1860, p. 306; * Jl. Ac. N. Sci. - Phila., IV, 1860, p. 349, pl. Lv, fig. 174; * Obs., VIII, 1860, p. 31, pl. Lvu, fig. 174.—* B. H. Wrient, Check List, 1888. * Margaron (Unio) castus L&aA, Syn., 1870, p. 40. South Carolina. 1The type is a young shell identical with one of Lea’s U. anthonyi. The type of the latter is a little larger, lighter colored, and less rayed. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 709 UNIO MASONI Conrad.! * Unio masoni CONRAD, New F. W. Shells, 1834, p. 34, pl. v, fig. 2, p. 70.—* FER- uSSAC, Guer. Mag., 1835, p. 29.—* ConraD, Monog., III, 1836, p. 28, pl. x1, fig. 2.—* MOLLER, Syn. Noy. Gen., 1836, p. 204.—* HANLEY, Test. Moll., 1842, p. 201; *Bi . Shells, 1843, p. 201, pl. xxi, fig. 18.—*CaTLOw and REEVE, Conch. Nom., 1845, p. 61.—* CHENU, Bib. Conch., Ist ser., III, 1845, p. 18, pl. 1, fig. 1.—* Kuster, Conch. Cab. Unio, 1852, p. 34, pl. v, fig. 6.—* CoNRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 252.--H. and A. ApDAms, Gen. Rec. Moll., IT, 1857, p. 492.—* B. H. Wricut, Check List, 1888.—* PTEL, Conch. Sam., IIT, 1890, p. 158. * Margarita (Unio) masoni LEA, Syn., 1836, p. 33; 1838, p. 23. * Margaron (Unio) masoni LEA, Syn., 1852, p. 84; 1870, p. 55. Savannah River, Georgia. +UNIO FRATERNUS Lea. *Unio fraternus LEA, Tr. Am. Phil. Soc., X, 1852, p. 263, pl. xvi, fig. 15; *Obs., V,. 1852; p. 19 pl. xvi, fig. 15.—*CoNRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 249.—*H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 493.—* KusTER, Conch. Cab. Unio, 1861, p. 201, pl. Lxvu, fig. 2.—* B. H. Wrieut, Check List, 1888.—* P&TEL, Conch. Sam., IIT, 1890, p. 153. *Margaron (Unio) fraternus LEA, Syn., 1852. p.32; 1870, p.51. Abbeville district, South Carolina, to Columbus, Georgia. +UNIO CONGARAUS Lea. *Unio congareus LEA, Tr. Am. Phil. Soc., IV, 1831, p. 72, pl. vi, fig. 4; Obs., I, 1834, p. 82, pl. vi, fig. 4.—* Conrap, New F. W. Sheils, 1834, p. 68.—* FERUS- sac, Guer. Mag., 1835, p. 26.—* ConRraAD, Monog., III, 1836, p. 27, pl. xu, fig. 1.—* HANLEY, Test. Moll., 1842, p.200; * Biv. Shells, 1845, p. 200, pl. x xu, fig. 31.—* CaTLOw and REEVE,Conch. Nom., 1845, p.57.—* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1858, p. 247.—* H. and A. Apams, Gen. Rec. Moll., IJ, 1857, p. 493.—* CHENU, IJ]. Conch., 1858, pl. 111, figs. 5, 5a, 5b.—*SowERBy, Conch. Teon., XVI, 1867, pl. Lix, fig. 296.—* B. H. Wriaut, Check List, 1888.— *PMHTEL, Conch. Sam., III, 1890, p. 148. * Margarita (Unio) congareus LEA, Syn., 1836, p. 82; 1838, p. 22. * Margaron (Unio) congareus LEA, Syn., 1852, p. 33; 1870, p. 54. *t Unio fulvus Lea,? Tr. Am. Phil. Soc., V, p. 96, pl. x11, fig. 39; *Obs., I, 1834 p- 208, pl. x111, fig. 39.—* FERusSAC, Guer. Mag., 1835, p. 29.—* HANLEY, Test. Moll., 1842, p. 200; * Biv. Shells, 1843, p. 200, pl. xx111, fig. 32.—* CATLOW and REEVE, Conch. Nom., 1845, p. 59.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 493.—*SoweErRBy, Conch. Icon., XVI, 1858, pl. LXxxIx, fig. 483.— *B. H. Wricat, Check List, 1888.—* P&TEL, Conch. Sam., III, 1890, p. 153. * Margarita (Unio) fulvus LEA, Syn., 1836, p.32; 1838, p. 22. * Margaron (Unio) fulvus LEA, Syn., 1852, p. 33; 1870, p. 54. Cape Fear River, North Carolina; south to Savannah, Georgia. ‘T have never seen this species, but should judge from the figure that it groups with U. crassidens. 2The type is a young shell, and is not the same as adult shells which are in the Lea collection under that name. 710 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. tUNIO DARIENSIS Lea. * Unio dariensis LEA, Tr. Am. Phil. Soc., VIII, 1842, p. 246, pl. xxv1, fig.61; *Pr. Am. Phil. Soe., II, 1843, p. 225; * Obs., ILI, 1842, p. 84, pl. xxvi, fig. 61.—* Conrapb, Pr. Ac. N. Sci., Phila., VI, 1853, p. 248.—*H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 493.—* CHENU, II. Conch., 1858, pl. xxx111, figs. 6, 6a, 6b.—* SOWERBY, Conch. Icon., XVI, 1868, pl. xct, fig. 494.—* B. H. WriGuT, Check List, 1888.— * PHTEL, Conch. Sam., III, 1890, p. 150.—* Stmpson, Pr. U. S. Nat. Mus., XV, 1892, p. 413, pl. LI, fig.2; LIV, fig. 1. * Margaron (Unio) dariensis Lma, Syn., 1852, p. 33; 1870, p. 54. Southeast Georgia to north Florida. t UNIO MONROENSIS Lea. Unio monroensis L¥a,! Desc. of 12 sp. of Uniones, 1843, no pagination; * Tr. Am. Phil. Soc., IX, 18452, p. 279, pl. x1, fig. 8; * Obs., LV, 1848, p. 37, pl. x1, fig. 8.— * CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 252.—* H.and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 494.—* B. H. Wrieut, Check List, 1888.— *PaTEL, Conch. Sam., III, 1890, p. 159.—* Sumpson, Pr. U.S. Nat. Mus., XV, 1892, p. 410, pl. 1, fig. 1. * Margaron (Unio) monroensis LEA, Syn., 1862, p. 29; 1870, p. 46. Florida. tUNIO HARTWRIGHTI:? B. H. Wright. t Unio hartwrighti B. H. WricuT, Naut., IX, 1896, p. 121, pl. 11, figs. 4-6. Lake Beresford, Florida. ‘UNIO HINKLEYI B. H. Wright. *Unio hinkleyi B. H. WricHT, Pr. Ac. N. Sci. Phila., 1888, p. 117, pl. iv, fig. 3°; *Check List, 1888.—* Simpson, Pr. U.S. Nat. Mus., XV, 1892, p. 425, pl. Lxv, fig. 4. Florida. 1A puzzling form. The type, the only shell in the Lea collection, is rather solid, and the posterior ridge is curved slightly upward in the middle. Other specimens in the museum are less solid, the posterior ridge is sharper, and straight or curved down in the middle, and there seems to be almost a connection with the very different U. hartwrighti. 2This name was applied to another species by Newcomb, and was used by Wright in the Check List, by Pietel and others, but the form to which it was given was believed to be a synonym of something else, and it was never described. Mr, Wright has again used the name for what is probably a valid species. °The figure of this shell is not at all accurate, being considerably more blunt posteriorly and inflated below than the specimen sent as the type. It approaches U. monroensis, but is more elongated, and a series of specimens sent by Mr. Wright almost connects it with U. dorei. No. 1205 SYNOPSIS OF THE NAITADES—SIMPSON., ‘lek tUNIO WEBSTERI B. H. Wright. ~ Unio websteri B. H. Wricut, Pr. Ac. N. Sci. Phila., 1888, p. 113, pl. m1, fig. 2'; * Check List, 1888. Florida. tUNIO DORSATUS Lea. “Unio dorsatus Lua, Pr. Ac. N. Sci. Phila., XII, 1868, p. 160; * Jl. Ac. N. Sci. Phila., VI, 1868, p. 300, pl. xLv, fig. 112; * Obs., XII, 1869, p. 60, pl. xLv, fig. 112.— *B.H. Wricut, Check List, 1888.—* Stmpson, Pr. U.S. Nat. Mus., XV, 1892, p. 411, pl. L1, fig. 7; Lu, figs. 1, 2. * Margaron ( Unio) dorsatus LEA, Syn., 1870, p. 37. Catawba River, North Carolina; Florida. +UNIO WACCAMAWENSIS Lea.? * Unio waccamawensis Lma, Pr. Ac. N. Sei. Phila., VII, 1863, p. 193; *Jl. Acad. N. Sci. Phila., VI, 1866, p. 16, pl. v, tig. 14; *Obs., XI, 1867, p. 20, pl- v, fig. 14.—* B. H. WriGut, Check List, 1888. * Margaron (Unio) waccamawensis LEA, Syn., 1870, p. 36. Waccamaw Lake, North Carolina. (Group of Unio pigerrimus.) Shell rather solid, elliptic rhomboid, somewhat inflated, with a low, rounded posterior ridge, sometimes a little arcuate below, biangulate behind; beaks full, their sculpture a few coarse ridges which are curved upward and swollen where they cross the posterior ridge; surface concentrically striate and often sculptured with curved, subradiating or zigzag corrugations whicb have a tendency to break into nodules; epidermis brownish; hinge rather heavy; pseudocardinals stumpy, granular; laterals club shaped; muscle scars well marked. Animal unknown. UNIO PIGERRIMUS Crosse and Fischer. * Unio pigerrimus CROSSE and FISCHER, Jl. de Conch. XLJ, 1893, p. 293.— * FISCHER and CROSSE, Miss. Sci., Pt. 7, II, 1894, p. 582, pl. Lxv, figs. 1, la. Mexico. tUNIO MITCHELLI Simpson. *Unio mitchelli SIMPSON (in Dall.), Pr. U. 8. Nat. Mus., XVIII, 1896, p.5; Pr. U. ‘S. Nat. Mus., XIX, 1896, p. 371, pl. xxxu1, figs. 1-3.3 Southern Texas to New Leon, Mexico. ‘Mr. Wright has sent to the Museum under the above name two quite different forms, neither of which is like the figure. From an examination of the first one sent, an old, worn shell, and the figure, I believed it to be a form of U. obesus (see Proc. U. S. Nat. Mus., XV, 1892, p.428). Specimens sent since by Mr. Wright and said to be typical approach U. hartwrighti, but are more compressed and elongated. These forms are exceedingly puzzling. ?An aberrant species. The shell is inflated, thin, and hasa strong posterior ridge. It has characters of both the Buckleyi and Crassidens groups. “Close to pigerrimus apparently, and may be but a variety of it; it is a lighter, longer shell, is less sculptured, and dces not have a rose-colored nacre. 712 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. + UNIO IHERINGI B. H. Wright. * Unio theringi B. H. WRIGHT, Naut., XII, 1898, p. 93. —* SIMPSON, Pr. Ac. N. Sci. Phila., 1900, p. 79, pl. Iv, fig. 5. Southern Texas. tUNIO SPHENORHYNCHUS Fischer and Crosse. * Unio sphenorhynchus FISCHER and CROSSE, Miss. Sci., Pt. 7, II, 1894, p. 617, pl. LXVI, figs. 2, 2a. Mexico. (Group of Unio liebmanni.) Shell rather solid, inflated, ovate rhomboid or trapezoidal, with a well-developed posterior ridge, pointed at or near the base behind, but not biangulate, nearly straight or slightly incurved below; beaks full, sculpture not seen; surface smooth or concentrically striate; epidermis dark, scarcely rayed; hinge rather strong; pseudocardinals heavy, compressed; muscle scars distinct; nacre livid to whitish. Animal unknown.! tUNIO LIEBMANNI Philippi. * Unio liebmanni PHILIPPI, Zeits. fiir Mal., IV, 1847, p. 96; * Abbild. und Besch., ITI, 1849, p. 109, pl. vi, fig. 1.—* KusrErR, Conch. Cab. Unio, 1862, p. 281, pl. xciv, fig. 7.—* P®TEL, Conch. Sam., III, 1890, p. 157.—* FiscHER and CROSSE, Miss. Sci., Pt. 7, II, 1894, p. 616. * Margaron (Unio liebmanni) LEA, Syn., 1870, p. 48. * Unio liebmanni B. H. Wricut, Check List, 1888. Mexico. tUNIO OPACATUS Crosse and Fischer. * Unio opacatus CROSSE and FISCHER, Jl. de Conch., XLI, 1893, p. 295.—* FISCHER and CRossE, Miss. Sci., Pt. 7, II, 1894, p. 592, pl. Lx v1, figs. 1, la. Mexico. (Group of Unio buckleyi.) Shell oval, obovate, subtrapezoidal, or elliptical, with a more or less developed posterior ridge, often biangulate behind, compressed or inflated, thin or somewhat solid; beaks generally full, sculptured with several rather strong concentric ridges, which are either nearly paral- lel with the growth lines or slightly doubly looped; posterior slope often faintly wrinkled; epidermis usually smooth and shining in the younger shells, often rough when old, becoming darker with age, rayed when young. Hinge teeth solid or compressed; nacre mostly brilliant, 1This group is exceedingly close to that of U. buckleyi, according to the shell char- acters, and some specimens of U. liebmanni are so near others of U. buckleyi as to deceive even experts. NO. 1205. SYNOPSIS OF THE NATADES— SIMPSON. 713 of many shades. Animal not differing especially from that of closely related groups. ! t UNIO BUCKLEY/I Lea. * Unio buckleyi, LEA, Desc. of 12 Uniones, 1843 (no pagination) ; * Tr. Am. Phil. Soc., IX, 1845 ?, p. 276, pl. XxXIX, fig.2; *Obs., IV, 1848, p. 34, pl. xxx1x, fig. 2.— * CONRAD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 245.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 493.—* KusTEr, Conch. Cab. Unio, 1861, p. 177, pl. Lv1, fig. 2.—* SowERBY, Conch. Icon., XVI, 1866, pl. xxx1v, fig. 175.—*B. H. Wricut, Check List, 1888.—* B. H. and 8. H. Wricut, Conch. Ex., TI, 1888, p. 95.—* PHTEL, Conch. Sam., III, 1890, p. 146.—*Smpson, Pr. U.S. Nat. Mus., XV, 1892, p. 417, pl. viii, figs. 6,7; LIx, figs. 1,2; Lx, fig. 2. * Margaron (Unio) buckleyi LEA, Syn., 1852, p.30; 1870, p. 48. *+ Unio buddianus Lra,? Desc. of 12 Uniones, 1843; Tr. Am. Phil. Soc., IX, 1845, ? p. 277, pl. xt, fig.5; *Obs., IV, 1848, p. 35, pl. x1, fig. 5.—* Conran, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 245.—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 492.—* KustTER, Conch. Cab. Unio, 1861, p. 249, pl. LxxxIVv, fig. 1.—* REEVE, Conch. Icon., XVI, 1865, pl. xx, fig. 88.—* B. H. and 8S. H. WriGnt, Conch. Ex., II, 1888, p. 95.—* B. H. Wriegut, Check List, 1888.—* PaTe., Conch. Sam., III, 1890, p. 146. * Margaron (Unio) buddianus LEA, Syn., 1852, p.32; 1870, p. 52. *t Unio dalli B. H. Wricut,? Pr. Ac. N. Sci. Phila., 1888, p. 119, pl. v1, fig. 1.— *B. H. WRiGuHT, Check List, 1888. + UNIO BUCKLEYI var. ORCUTTII S. H. Wright. * Unio orcuttii S. H. WRIGHT, West. Am. Sci., IV, 1888, p. 60, 3 figs.4 Florida. tUNIO JAYENSIS Lea. *Unio jayensis Lea, Tr. Am. Phil. Soc., VI, 1838, p. 28, pl 1x, fig. 23;5 *Obs., II. 1838, p. 28, pl. 1x, fig. 23.—* TROSCHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 235.—* HANLEY, Test. Moll., 1842, p. 206; * Biv. Shells, 1848, p. 206, pl. xx, fig. 53.—* CaTLow and REEVE, Conch. Nom., 1845, p. 60.—* Conrap, Pr. Ac. N. Sei. Phila., VI, 1853, p. 251'—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p 491.—-* CHENU, Ill. Conch., 1858, pl. x x11, figs. 4, 4a, 4b.—* SOWERBY, Conch. 1The relationship between the Buckleyi, Crassidens, Complanatus, Downiei and Fish- erianus groups is very close. That of Crassidens is characterized by inflated shells with a strong posterior ridge, and wrinkles on the posterior slope; of Buckleyi by a less developed ridge, the absence of strong wrinkles, and a rich, warm texture of shell; of Complanatus by trapezoidal, not greatly inflated shells of dull texture. The species of the Fisherianus group have elongated, generally compressed, thin shells, pointed behind, and of the Downiei assemblage solid, inflated shells. But there are many species that are quite negative in characters, and others that com- bine the features of two or more groups, that can not be satisfactorily placed. ?The type is a large, badly eroded shell, apparently a little injured at the upper, anterior part, and is truncated a little there. °The type is a small, old shell, which has become reugh and arcuate. 4Credited to Manatee River, Florida, Simpson and Miakka Lake, Florida, New- comb, by Mr. Wright. I have never found it in the Manatee River, but obtained it in abundance in Miakka Lake. ° Although the type is very different from that of U. buckleyi the two species ap-. proach so closely that there are specimens which I can not name. 714 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL. Icon., XVI, 1867, pl. Lx, fig. 301; Lxvu, fig. 343.?—* P&TEL, Conch. Sam., IIT, 1890, p. 155. * Margarita (Unio) jayensis LEA, Syn., 1856, p. 37; 1838, p. 24. * Margaron (Unio) jayensis LEA, Syn., 1852, p. 37. * + Unio prasinatus CONRAD, Am. JI. Conch., II, 1866, p. 279, pl. xv, fig. 14.—* B. H. WriGart, Check List, 1888. *Margaron (Unio) jayanus Lua, Syn., 1870, p. 60. *Onio jayanus B. H. WRIGHT, Check List, 1888.—* Simpson, Pr. U.S. Nat. Mus., XV, 1892, p. 419, pl. LXI, fig. 4. *+Unio simpsoni B. H. WricutT!; Check List, 1888. *+ Unio marshii B. 1. Wricut, Pr. Ac. N. Sci. Phila., 1888, p. 118, pl. v, fig. 2; Check List, 1888. *+t Unio tryont B. H. WRIGHT, Pr. Ac. N. Sci. Phila., 1888, p. 120, pl. v1, fig. 2; Check List, 1888. ; Florida. tUNIO CORUSCUS Gould. * Unio coruscus GOULD, Pr. Bost. Soc. Nat. Hist., I, 1856, p. 15; *Otia Conch., 1862, p. 222.—* B. H. and 8. H. WriGut, Conch. Ex., II, 1888, p. 95.— *B. H.Weicut, Check List, 1888.—* Simpson, Pr. U. 8S. Nat. Mus., XV, 1892, p. 419, pl. Lx111, figs. 1, 7. * Margaron (Unio) coruscus LEA, Syn., 1870, p. 48. + UNIO CORUSCUS var. FRYANUS B. H. Wright.? Unio fryanus B. H. WriGut, Pr. Acad. N. Sci. Phila., 1888, p. 115, pl. 1, fig. 1; Check List, 1888. *t Unio diazensis S. H. WRIGHT,* Naut., X, 1897, p.5. Florida. tUNIO CUNNINGHAMI B. H. Wright. * Unio cunninghami B. H. Wricut, Pr. Ac. N. Sci. Phila., X LI, 1883, p. 58, pl. 1, figs. 1-4.—* A. F.Gray, Am. Nat., XVII, 1883, p.1184.—*S. H. and B. H. WRient, Conch. Ex., II, 1888, p. 105.—* B. H. Wricut, Check List, 1888.—* SIMPSON, Pr. U. S. Nat. Mus., XV, 1892, p. 422, pl. Lxv, fig. 6. Florida. tUNIO MICANS Lea. * Unio micans LBA, Pr. Ac. N. Sci. Phila., I, 1857, p. 85; *J1. Ac. N. Sei. Phila., V, 1862, p. 59, pl. 111, fig. 207; * Obs., VIII, 1862, p. 63, pl. 111, fig. 207.—* SOWERBY, Conch. Icon., XVI, 1866, pl. xxxv, fig. 182.—*B. H. Wrieut, Check List, 1888.—* PmTEL, Conch. Sam., III, 1890, p. 159.—* Stimpson, Pr. U. 8. Nat. Mus., XV, 1892, p. 423, pl. LXV, fig. 3. * Margaron (Unio) micans LEA, Syn., 1870, p. 45. * Unio perlucens LEA, Pr. Ac. N. Sci. Phila., VII, 1863, p.193; * Jl. Ac. N. Sci. Phila., ‘From an examination of specimens sent to the U. 8. National Museum by Mr. Wright I referred this to U. buckleyi, in Pr. U.S. Nat. Mus., XV, p.417. The type is now in the U. 8S. National Museum, and I believe it to be a rather compressed, bright young U. jayensis. 2A form of coruscus a little less solid and inflated than the type, and quite brilliant. 2This name occurs in B. IL. Wright’s Check List, but the species was not described until 1897. It scarcely differs from U. fryanus. NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. (OLS VI, 1866, p. 18, pl. v, fig. 16; Obs., XI, 1867, p. 22, pl. v, fig. 16.—* B. H. Wricurt, Check List, 1888. _ * Margaron (Unio) perlucens LEA, Syn., 1870, p. 45. North Carolina to South Georgia and Florida. tUNIO PYGMEUS Lea.! “Unio pygmeus LEA, Pr. Am. Phil. Soc., V, 1852, p. 252; * Tr. Am. Phil. Soc., X, 1852, p. 262, pl. xv, fig. 14; *Obs., V, 1852, p. 18, pl. xv, fig.14; *Conran, Pr. Ac. N. Sci. Phila., VI, 1853, p. 256.—* B. H. WRIGHT, Check List, 1888. * Margaron( Unio) pygmeus LEA, Syn., 1870, p. 48. Abbeville District, South Carolina. tUNIO LEHMANIL, S. H. Wright. * Unio lehmanii, S. H. WRIGHT, Naut., X, 1897, 18: 138.—* Simpson, Pr. Acad. N. Sci. Phila., 1900, p. 80, pl. Iv, fig. 9 St. Marys River, Florida. tUNIO BURTCHIANUS S. H. Wright. *Unio burtchianus S. H. WRIGHT, Naut., X, 1897, p. 1387.—-* Simpson, Pr. Ac. N. Sci. Phila., 1900, p. 80, pl. Iv, fig. 8. St. Mary’s River, Florida. tUNIO CONFERTUS Lea. * Unio lugubris LEA, Tr. Am. Phil. Soc., VI, 1834, p. 30, pl. rx, fig. 25; * Obs., IT, 1838, p. 30, pl. rx, fig. 25.—* TROSCHEL, Arch. fiir Naturg.,V, 1839, Pt. 2, p. 235.— *HANLEY, Test. Moll., 1842, p. 206; *Biv. Shells, 1843, p. 206, pl. xxu1, fig. 9.— ~ *CHENU, Bib. Conch., Ist ser., ILI, 1845, p. 53, pl. XV, figs. 1, la.—* CATLOW and REEVE, Conch. Nom., 1845, p.60.—* Conrap, Pr. Ac. N. Sei. Phila., VI, 1853, p. 252.—* H. and A. ADAMS. Gen. Rec. Moll., II, 1857, p. 491.—* CHENU, III. Conch., 1858, pl. xx, figs. 3, 3a, 3b.—*Sowersy, Conch. Icon., XVI, 1868, pl. LXxx, fig. 423.—* B. H. Wricut, Check List, 1888.—* P£TEL, Conch. Sam., ITI, 1890, p. 158.—* Simpson, Pr. U. S. Nat. Mus., XV, 1892, p. 424, pl. Lxvi, fic. 4; Lxvu, fig. 1. * Margarita (Unio) lugubris LEA, Syn., 1836, p.37; 1838, p. 24. * Margaron (Unio) lugubris LEA, Syn:, 1852, p.38; 1870, p.53. *t Unio confertus LeA, Tr. Am. Phil. Soc., V, 1834, p. 103, pl. xvi, fig.47; *Obs., I, p. 215, pl. xvI, fig. 47.—* FeRussac, Guer. Mag., 1835, p. 29.—* HANLEY, Test. Moll., 1842, p. 200; * Biv. Shells, 1843, p. 200, pl. x xu, fig. 34.—* CarLow and REEVE, Conch. Nom., 1845, p. 57.—* H. and A. ApAms, Gen. Rec. Moll., II, 1857, p. 493.—* SowERBY, Conch. Icon., XVI, 1866, pl. xxxv, fig. 185.—* B. H. WriGutT, Check List, 1888.—* P®TEL, Conch. Sam., III, 1890, p. 148. * Margarita( Unio) confertus LEA, Syn., 1836, p.31; 1838, p. 22. * Margaron (Unio) confertus LEA, Syn., 1852, p. 33; 1870, p. 53. *t Unio geddingsianus LEA, Pr. Am. Phil. Soe. I, 1840, p. 285; * Tr. Am. Phil. Soc., VIII, 1842, p. 202, pl. x1, fig. 15; * Obs., III, 1842, p. 40, pl.xi, fig. 15.—* ConRaD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 250.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 493.—* CHENU, II]. Conch., 1858, pl. xxx1, figs. 3, 3a, 3b.—* B. H. Wricut, Check List, 1888.—* P#TeEL, Conch. Sam., III, 1890, p. 153. * Margaron ( Unio) geddingsianus LEA, Syn., 1852, p. 33; 1870, p. 53. 1Only a single broken right valve of this is in the Lea collection. 2The name lugubris applied first to this species will have to give way to confertus because Say used lugubris at an earlier date for a Unio. Op PROCEEDINGS OF THE NATIONAL MUSECM. VOL. XI. * Unio Bain CONRAD, Pr Ac. N. Sci. Phila., 1V, 1849, p. 154; * Ann. and Mag., IV, 1849, p. 301; *Jl. Ac. N. Sci. Phila., I, 1850, p. 276, pl. xxxvil, ayer, DE IPARY ANG, I Seite nies, VI, 1853, p. 251.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 493.—* B. H. Wriaut, Check List, 1888.—* Pa Ts, - Conch. Sam., III, 1890, p. 157. * Margaron (Unio) limatulus LEA, Syn., 1852, p. 32; 1870, p. 52. *t Unio whiteianus LEA, Tr. Am. Phil. Soc., X, 1852, p. 258, pl. xiv, fig. 8.—* Obs., V, 1852, p. 14, pl. xiv, fig. 8.—* H. and A. JNDESSIB) Gen., Rec. Moli., II, 1857, p. 493. ee H. Wricut, Check List, 1888.—* P&TEL, Coneh. Sam., III, 1890, p. 172. * Margaron ( Unio) whiteianus LEA, Syn., 1852, p. 33; 1870, p. 53. * Unio vibex CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 260.! : * t+ Unio similis Lea, Pr. Ac. N. Sci. Phila., 1X, 1857, p. 169; * J]. Ac. N. Sci. Phila., IV, 1858, p.91, pl. xix, fig. 71; *Obs., VI, 1858, p. 91, pl. x1x, fig. 71.—* B. H. WriGHrt, Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p. 167. * Margaron (Unio) similis LEA, Syn., 1852, p.52; 1870, p. 53. “t+ Unio protensus Lua, Pr. Ac. N. Sci. Phila., IX, 1865, p. 88; ~J1. Ac. N. Sci. Phila., VI, 1868, p. 256, pl. XxX1, fig. 71; *Obs., XII, 1869, p. 16, pl. xxx1, fig, 71.—*B. H. WriGut, Check List, 1888. * Margaron ( Unio) protensus LEA, Syn., 1870, p. 60. * + Unio radiolus Lea, Pr. Ac. N. Sci. Phila., I, 1871, p. 192; *Jl. Ac. N. Sci. Phila., VIII, 1874, p. 21, pl. vi, fig. 18; * Obs., XIII, 1874, p. 25, pl. vi, fig. 18.—* B. H. WriGnt, Check List, 1888. North Carolina to Florida. t UNIO INSULSUS Lea. * Unio insulsus Lua, Pr. Ac. N. Sci. Phila., I, 1857, p. 86; * Jl. Ac. N. Sei. Phila., IX, 1862, p. 53, pl.1, fig. 199; *Obs., VIII, 1862, p.57, pl. 1, fig. 199.—* B. H. Wrient, Check List, 1888.—* Simpson, Pr. U.S. Nat. Mus., XV, 1892, p. 422, pl. txv, figs. 1,5. * Margaron ( Unio) insulsus LEA, Syn., 1870, p. 53. *+t? Unio lucidus Lra,? Pr. Ac. N, Sci. Phila,, VII, 1863, p. 192; * Jil. Acs N. Set. Phila., VI, 1866,p. 9, pl. u, fig. 6; ~Obs., XI, 1867, p. 13, pl. ro fig. 6.—* B. H. Wricut, Check List, 1888. *Margaron (Unio) lucidus Lea, Syn , 1870, p. 48. * +t Unio cistelliformis Lea, Pr. Ac. N. Sci. Phila., VII, 1863, p. 192; * Jl. Ac. N. Sci. Phila., VI, 1866, p. 19, pl. v1, fig. 17; *Obs., XI, 1867, p. 23, pl. vi, fig. 17.— *B. H. WriGcut, Check List, 1888. * Margaron (Unio) cistelliformis LEA, Syn., 1870, p. 52. North Carolina to Florida. + UNIO OBNUBILUS Lea. *Unio obnubilus Lea, Pr. Ac. N. Sci. Phila., IX, 1857, p. 169; * Jl. Ac. N. Sci. Phila., IV, 1858, p. 84, pl. xvu1, fig.64; * Obs., VI, 1858, p. 84, pl. xvn, fig. 64.— *SIMPSON, Pr. U. 8. Nat. Mus., XV, 1892, p. 424, pl. Lxvi, fig. 3. *Margaron (Unio) obnubilus LEa, ca pi l8T0; ps o3: *t+Unio opacus LEA, Pr. Ac. N. Sci. Phila., IX, 1857, p, 169; *Jl. Ac. N. Sci. Phila., IV, 1858, p. 86, pl. xviii, fig. 66; * Obs., VI, 1858, p. 86, pl. xvuit, fig. 66.— *B. H. Wriaut, Check List, 1888.—* P&TEL, Conch. Sam., III, 1890, p. 161. ‘Conrad here states that his vibex first whiteianus of Lea, and then zeiglerianus of Lea. The latter is totally different from whiteianus. 2Very near U. confertus. Itis probably a delicate, light-colored, rayed insulsus. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. Healing * Margaron (Unio) opacus LEA, Syn., 1870, p. 52. *tUnio equatus LEA, Pr. Ac. N. Sci. Phila., IX, 1857, p.170; *J1, Ac. N. Sci. Phila., 1858, p. 89, pl. xrx, fig. 69; *Obs., VI, 1858, p. 89, pl. xix, fig. 69.—* B. H. WriGcutT, Check List, 1888. - *Margaron (Unio) wquatus LEA, Syn., 1870, p. 52. *tUnio viridicatus LEA, Pr. Ate, N. Sei. Phila., IX, 1857, p. 170; * Jl. Ac. N. Sci. Phila., IV, 1858, p. 87, pl. xviul, fig. 67; * Obes VI, 1858, pl. xviut, fig. 67. * Margaron (Unio) viridicatus Lea, Syn., 1870, p.52. *t Unio hepaticus Lea, Pr. Ac. N. Sci. Phila., III, 1859, p. 154; * Jl. Ac. N. Sci. Phila., IV, 1860, p. 348, pl. Lv, fig. 173; *Obs., VIII, p. 30, pl. Lv, fig. 173.— *B. H. Wriacut, Check List, 1888.—* Pater, Conch. Sam., III, 1890, p. 154. * Margaron (Unio) hepaticus La, Syn., 1870, p. 52. *t Unio santeénsis Lua, Pr. Ac. N. Sci. Phila., J. 1871, p. 193.—* Jl. Ac. N. Sci. Phila., VIII, 1874, p. 20, pl. vi, fig.17; *Obs., XIII, 1874, p. 24, pl. vi, fig. 17.—*B. H. Wricut, Check List, 1888. *t Unio nolanit B. H. Wricut, Pr. Ac. N. Sci. Phila., 1888, p. 116, pl. rv, fig. 11; Check List, 1888. South Carolina to Florida. +UNIO FUSCATUS Lea. *Unio fuscatus LEA, Dese. 12 Uniones, 1843 (no pagination).—* Tr. Am. Phil. Soc., IX, 1845?, p. 277, pl. xu, fig. 4; Obs., IV, 1848, p. 35, pl. x1, fig. 4.— *CoNRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 250.—*H. and A. ADams, Gen. Rec. Moll., II, 1857, p. 494.—* KusrEer, Conch. Cab. Unio, 1848, p. 203, pl. LXViu, fig. 2.—* REEVE, Conch. Icon., XVI, 1865, pl. xx1, fig. 95.—* PATEL, Conch, Sam., III, 1890, p. 153.—* Simpson, Pr. U. S. Nat. Mus., XVI, 1892, p 420, pl. Lx1u1, figs. 2, 4.—*B. H. Wricut, Check List, 1888. * Margaron (Unio) fuscatus Lra, Syn., 1852, p. 30; 1870, p. 48. Florida. tUNIO OCCULTUS Lea. *Unio occultus LEA, Desc. 12 Uniones, 1843 (no pagination).—Tr. Am. Phil. Soc., IX, 1845?, p. 279, pl. x1, fig. 7; *Obs., IV, 1848, p. 37, pl. x1, fig. 7.—* H. and A. ADAMS, Gen. Rec. Moil., II, 1857, p. 494.—* Kuster, Conch. Cab. Unio, 1861, p. 223, pl. LXxv, fig. 3.—* B. H. WricHt, Check List, 1888.—* P&rTsEt, Conch. Sam., III, 1890, p. 161,—* Simpson, Pr. U. S. Nat. Mus., XV, 1892, p. 420, pl. Lx, figs. 5, 6. * Margaron ( Unio) occultus LEA, Syn., 1852, p.48; 1870, p. 48. Florida. tUNIO ARCTATUS Conrad. * Unio arctatus CONRAD, Am. JI. Sei., XXV, 1834, p. 340, pl.1, fig.9; * New F. W. Shells, 1834, p. 36, pl. v, fig. 4, p. 67.—* MOLLER, Syn. Nov. Gen., 1836, p. 200.— * HANLEY, Test. Moll., 1842, p. 207; * Biv. Shells, 1843, p. 207, pl. x x11, fig. 47.— * CATLOW and REEVE, Conch. Nom., 1845, p. 56.—* CHENu, Bib. Conch., 1st ser., III, 1845, p. 19, pl. 11, fig. 10.—* Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 245, —* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 491.—* KusTEr, Conch. Cab. Unio, 1861, p. 195, pl. Lx11, fig. 3. _*B, H. Wrieut, Check List, 1888.— * PATEL, Conch. Sam., III, 1890, p. 144. * Margarita (Unio) ar Gute LEA, Syn., 1856, p. 38; 1838, p. 25. *Margaron (Unio) arctatus Lma, Syn., 1852, p. 38; 1870, p. 62. 718 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. +UNIO ARCTATUS var. TORTIVUS Lea. *+ Unio tortivus Lua,! Pr. Am. Phil. Soc., I, 1840,p. 287; Tr. Am. Phil. Soc., VIII, 1842, p. 204, pl. xu, fig. 17; Obs., IIT, 1842, p. 42, pl. x11, fig. 17.—*CONRAD, Pr. Ac. N. Sei. Phila., VI, 1853, p.259.—H. and A. ADAMS, Gen. Rec. Moll., II, 1857,p. 493. — * CHENU, Il. Conch., 1858, pl. xxix, figs. 6, 6a, 6b.—* SOWERBY, Conch. Icon., XVI, 1866, pl. xxxv1, fig. 193.—* B. H. WricuT, Check List, 1888.—* Parst, Conch. Sam., III, 1890, p. 169.—*Simpson, Pr. U. 8S. Nat. Mus., XV, 1892, p. 421, pl. Lx11l, fig.8; LXIV, figs. 1, 3, 4. *Margaron (Unio) tortivus LEA, Syn., 1852, p. 33; 1870, p. 53. *t Unio tetricus Ima, Pr. Ac. N. Sci. Phila., IX, 1857, p. 170; *Jl. Ac. N. Sci. Phila., IV, 1859, p. 195, pl. xxl, fig. 78; *Obs., VII, 1859, p. 13, pl. xxu, fig. 78.— * KuSTER, Conch. Cab. Unio, 1862, p. 276, pl. xcl, fig.7; xcu1, fig. 3.—* B. H. WriGut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 169. *Margaron (Unio) tetricus Lea, Syn., 1870, p. 53. *tUnio purpurellus Lra,? Pr. Ac. N. Sci. Phila., IX, 1857, p. 171; *Jl. Ac. N. Sci. Phila., IV, 1859, p. 19, pl. xxi, fig. 81; *Obs., VII, 1859, p. 16, pl. xxuu, fig. 81.—* B. H. Wrieut, Check List, 1888. * Margaron (Unio) purpurellus Lea, Syn., 1870, p. 53. *+ Unio mercert LEA, Pr. Ac. N. Sei. Phila., VI, 1862, p. 169; *Jl. Ac. N. Sci. Phila., V, 1862, p. 209, pl. xxx1, fig. 278; *Obs., IX, 1863, p. 31, pl. xxx1, fig. 278.—*B. H. Wrieut, Check List, 1888.—*PaTEL, Conch. Sam., III, 1890, p. 159. * Margaron ( Unio) merceri LEA, Syn., 1870, p. 61. Florida; South Georgia; the type west to the Black Warrior River, Alabama. tUNIO NIGELLUS Lea. * Unio nigellus LEA, Pr. Am. Phil. Soc., V, 1852, p. 251; *Tr.Am. Phil. Soc., X, 1852, p. 283, pl. xxIv, fig. 42; *Obs., V, 1852, p. 39, pl. xx1v, fig. 42.—* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 253.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 494.—* B. H. Wricut, Check List, 1888.—*Pa«TEL, Conch. Sam., III, 1890, p. 161. * Margaron ( Unio) nigellus LEA, Syn., 1852, p. 30; 1870, p. 53. *+ Unio denigratus Lea, Pr. Ac. N. Sei. Phila., IX, 1857, p. 171; *Jl. Ac. N. Sci. Phila., IV, 1859, p. 200, pl. x x11, fig. 83; *Obs., VII, 1859, p. 18, pl. xxm1, fig. 83.—* B. H. Wriaut, Check List, 1888.—* Simpson, Pr. U. 8. Nat. Mus., XV, 1892, p. 422, pl. Lxv, fig. 1. E *Margaron (Unio) denigratus LEA, Syn., 1870, p. 52. Chattahoochee River system: south into Florida. t UNIO PINEI B. H. Wright. *Unio pinei B. H. WricuT, Naut., XI, 1897, p. 40.—* Simpson, Pr. Ac. N. Sci. Phila., 1900, p. 80, pl. 111, fig. 1. North Florida. 1 Unio arctatus is a widely distributed, abundant, and variable species, ranging from the Black Warrior River to southern Florida. I have examined a great amount of material from the Black Warrior and Cahawba rivers (collected by Call), from the Flint and Chattahoochee rivers from the Lea and other collections, and I feel reasonably sure that all the species I have united should go together. 2T believe this to be a small, somewhat inflated form of arctatus. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON, 719 t UNIO OSCARI B. H. Wright. *Unio oscari B. H. WRIGHT, Naut., V, 1892, p. 124; IX, 1896, p. 122, pl. 11, figs. 1-3. Florida. tUNIO HAZELHURSTIANUS Lea. " Unio hazelhurstianus Lea, Pr. Ac. N. Sci. Phila., If, 1858, p.166; *J!. Ac. N. Sei. Phila., IV, 1859, p. 211, pl. xxv1, fig.92; *~Obs., VII, 1859, p. 29, pl. xxv1, fig. 92.—* SOWERBY, Conch. Icon., X VI, 1866, pl. xxxV, fig. 188.—* B. H.WriGHr Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p. 154. * Margaron (Unio) hazelhurstianus LEA, Syn., 1870, p. 60. r) Southern Georgia. tUNIO BUXTONI B. H. Wright. *Unio buxtont B. H. WRIGHT, Naut., XI, 1897, p. 55.—* Smumpson, Pr. Ac. N. Sci. Phila., 1900, p. 80, pl. 1, fig. 6. Marion County, Florida. t UNIO FERRISSII Marsh. * Unio ferrissitti MARSH, Naut., V, 1891, p. 30.'—* Simpson, Pr. U.S. Nat. Mus., XV, 1892, p. 423, pl. LX VI, figs. 1, 2. Small creek near Palatka, Florida. tUNIO DOREI B. H. Wright. *Unio doret B. H. WRIGHT,? Pr. Ac. N. Sci. Phila., 1888, p. 115, pl. 111, fig. 1. Lake Monroe, Florida. (Group of Unio striatulus.) ' Skell subsolid, rhomboid oval, with a well-developed post ridge ending in a point below; beaks full, with numerous subparallel, slightly corrugated, strong ridges; epidermis rayless or faintly rayed, with a few wrinkles on the posterior slope; pseudocardinals stumpy; laterals straight. Animal unknown. t UNIO STRIATULUS Lea. *Unio striatulus La, Pr. Acad. N. Sci. Phila., I, 1857, p. 86; * JI. Acad. N. Sci. Phila., V, 1862, p. 55, pl. 11, fig. 202.—~ Obs., VIII, 1862, p.59, pl. m1, fig. 202,— *SOWERBY, Conch. Icon., XVI, 1868, pl. Lxxu1, fig. 367.—* B. H. WRIGHT, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 168. * Margaron ( Unio) striatulus, LEA, Syn., 1870, p. 37. Roanoke River; Welden and Salem, North Carolina. ! This was first published in the Joliet Weekly News, a newspaper, May 1, 1891. It is a puzzling form, having something the shape of the variety orcutti of U. buck- leyi, but has plications on the posterior slope such as are found in the Crassidens group. 2T do not know where to place this form, of which I have only seen the type. The figure is not very accurate, and I formerly thought it a variety of U. buckley?, but on seeing the type I believe itis not that. Itseems to combine characters of the Buckleyi aud Crassidens groups. 720 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. t UNIO AMABILIS Lea. *Unio amabilis La, Pr. Acad. N. Sci. Phila., 1X, 1865, p. 89; * Jl. Acad. N. Sci. Phila:, Vil, 1869; p-. 2o7, pl. xxx, figs 72: “Obs: xell 1869) pati. placket fig. 72.—* B. H. Wright, Check List, 1888. * Margaron (Unio) amabilis LEA, Syn., 1870, p. 37. Butler, Taylor County, Georgia; North Carolina? UNIO SUBPLANUS Conrad. Unio subplanus CONRAD, Monog., IX, 18387, p. 73, pl. x1, fig.1; * Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.—* HaNLEY, Biv. Shells, Supp., 1856, p. 383, pl. xX1, fig. 16.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 493.—* Kuster, Conch. Cab. Unio, 1862, p. 272, pl. xc, fig. 5.—* B. H. Wricut, Check List, 1888.—* P&TEL, Conch. Sam., III, 1890, p. 168. * Margaron (Unio) subplanus LEA, Syn., 1852, p. 33; 1870, p. 54. *Unio subplanum SOWERBY, Conch. Icon., XVI, 1866, pl. XLVH, fig. 252. North Carolina and Virginia. UNIO BRIMLEYI S. H. Wright. *Unio brimleyi S. H. WRIGHT, Naut., X, 1897, p. 138; * Simpson, Pr. Ac. N. Sci. Phila., 1900, p. 80, pl. 1Vv, fig. 6. Neuse River and Irwin’s Creek, North Carolina. (Group of Unio complanatus.) Shell elongate trapezoidal, moderately solid, but little inflated, nearly straight below, with a posterior ridge, usually biangulate behind; beaks not prominent, sculptured with several coarse, parallel ridges which follow the growth lines or are nearly straight. Hpidermis some- times shining and feebly rayed, becoming rough and rayless with age; laterals straight or slightly curved; beak cavities shallow. Animal with the marsupium occupying all or nearly all of the outer branchiz; gills long, rounded below, inner much the larger, free nearly or quite their whole length from the abdominal sac. + UNIO COMPLANATUS (Solander) Dillwyn.! Mya complanata SOLANDER, manuscript (no date).—* PORTLAND catalogue, 1786, p. 100, Lot 2190.—* Dittwyn, Cat., I, 1817, p. 51. *Unio complanata DESHAYES, An. sans Vert., 2d ed., VI, 1835, p. 559; 3d ed., II, 1839, p. 676. | This species was described by Solander in Latin, but the manuscript was never published and is now in the British Museum. Mr. Edgar A. Smith kindly examined it for me and informed me that Dillwyn’s description in the catalogue is a transla- tion from Solander. The name Mya complanata was used by Lister in Hist. Sive. Conch. (1770, p. 150), but Lister was not a binomial author. The Portland catalogue is anonymous, and a mere sale list. I have done my best to straighten out the syn- onymy of this variable and exceedingly puzzling group, and have examined nearly all the types and a great amount of material. In some cases, as in the Buckleyi eroup, there seem to be no specific lines whatever. NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 721 od B. * Unio complanatus FERUSSAC, Guer. Mag., 1835, p. 26.—* GouLpD, Inv. of Mass., " 1841, p. 107, figs. 68-70.—* BINNEY, 2d ed., Inv. of Mass., 1870, p. 167, fig. 472.—* C. B. ADAMS, Thompson’s Hist. Vt., 1842, p. 167.—* HANLEy, Test. Moll., 1842, p. 199; * Biv. Shells, 1843, p. 199, pl. xx1, fig. 20.—* DE Kay, Zool. of N. Y., Pt. 5, 1843, p. 188, pl. xxu1, fig. 246.—* CaTLow and REEVE, Conch. Nom., 1845, p.57.—* STIMPSON, Shells of N. Eng., 1851, p. 13.—* AGassiz, Arch. fiir Nat., I, 1852, p. 50.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 247.— KusTER, Conch. Cab. Unio, 1856, p. 137, pl. x1, fig. 2.—*H. and A. ADAMS, Gen. Rec. Moll., I, 1857, p. 493.—* HARTMAN and MICHENER, Conch. Cest., 1874, p. 86, fig. 181.—* LATCHFORD, Tr. Ottawa Field Nat. Cl., 1882, p. 49.—* B. H. WRIGHT, Check List, 1888.—* H. CARPENTER, Naut., III, 1889, p. 93.—* Pa- TEL, Conch. Sam., III, 1890, p. 148. *Margarita ( Unio) complanatus LEA, Syn., 1836, p. 30: 1838, p. 22. *Margaron (Unio) complanatus LEA, Syn., 1852, p. 32; 1870, p. 51. * 2Unio violaceus SPENGLER, Skriv. Nat. Selsk. III, 1793, p. 55. *2? Unio purpureus Say, Nich. Enc., II, 1816, pl. 11, fig. 1; N. Harm. Diss., II, No. 21, 1829, p. 324.—* ConraD, New I’. W. Shells, 1834, p.71.—* SowERBy, Rich. Faun. Boreali Am., ITI, 1836, p. 316.—* L. W. Say, Terr. and Fluv. Shells, 1840, p. 7.—* SOWERBY, Conch. Icon., XVI, 1868, pl. Lx vi, fig. 346. *Mya purpurea EATON, Zool. Text-Book, 1826, p. 2. *?Unio purpurea DESHAYES, Encyc. Méth. II, 1827, p. 151, pl. 249, fig. 5. *Unio rarisulcata LAMARCK, An. sans Vert., VI, 1819, p. 72.—*Lna, Obs., I, 1834, p. 200.—DEsHAYEs, An. sans Vert., 2d ed., VI, 1835, p. 534. *Unio coarctata LAMARCK, An. sans Vert., VI, 1819, p. 73.—* LEA, Obs., I, 1834, p. 200.—DESHAYES, Encye. Méth., II, 1830, p.581; * An. sans Vert., 2d ed., VI, 1835, p. 535; 3d ed., II, 1839, p. 668.—*? SowERBy, Conch. Icon., XVI, 1866, pl. XXXIV, fig. 178. *Unio purpurascens LAMARCK, An. sans Vert., VI, 1819, p. 73.—DESHAYES, Enc. Méth., IT, 1830, p.581.—*L«a, Obs., I, 1834, p. 200.—DEsuayes, An. sans Vert., 2d ed., VI, 1835, p. 535; 3d ed., II, 1839, p. 668. *Unio georgiana LAMARCK, An. sans Vert., VI, 1819, p. 74.—* Lea, Obs., I, 1834, p. 201.—DEsHAYES, An. sans Vert., 2d ed., VI, 1835, p. 536; 3ded., II, 1839, p. 668, *Unio rhombula LAMARCK, An. sans Vert., VI, 1819, p.74.—* DEsHAyYEs, An. sans Vert., 2d ed., VI, 1835, p. 5386; 3d ed., II, 1839, p. 668. *Unio rhombula LAMARCK, An. sans Vert., VI, 1819, p. 74.—*Lma, Obs., I, 1834, p. 200.—* DESHAYES, An. sans Vert., 2d ed., VI, 1835, p. 536; 3d ed., II, 1839, p. 668.—*? DELESSERT, Rec. Coq. Sam., 1841, pl. x11, fig. 8. “Unio carinifera LAMARCK, An. sans Vert., VI, 1819, p. 74.—* Lra, Obs., I, 1834, p. 201.—DESHAYES, An. sans Vert., 2d ed., VI, 1835, p. 536; 3d ed., II, 1839, p. 668.—* KusTER, Conch. Cab. Unio, 1861, p. 176, pl. LVI, fig. 1. *Unio glabrata LAMARCK, An. sans Vert., VI, 1819, p. 75.—* Lua, Obs., I, 1834, p. 201.—DEsHAYES, An. sans Vert., 2d ed., VI, 1835, p. 537; 3d ed., II, 1839, p. 669. *Unio sulcidens LAMARCK, An. sans Vert., VI, 1819, p.77.—* Lxa, Obs., I, 1834, p. 202.—DEsHAYES, An. sans Vert., 2d ed., VI, 1835, p. 539; 3d ed., II, 1839, p. 670.—*? DELESSERT, Rec. Coq. Sam., 1841, pl. xu, fig. 3.—* CHENu, III. Conch., 1858, pl. x11, figs. 5, 5a. *Unio virginiana LAMARCK, An. sans Vert., VI, 1819, p.79.—DESHAYEs, An. sans Vert., 2d ed., VI, 1835, p. 544; 3d ed., II, 1839, p. 671. Unio fluviatilis GREEN, Jl. Mac. Lyceum, 1827, p. 41. * ? Unio raveneli CONRAD, New F. W. Shells, 1834, p.39, pl. v1, fig. 4,! p. 71.—* Fer- UssAC, Guer. Mag., 1835, p. 29.—* MOLLER, Syn. Nov. Gen., 1836, p. 206.— ‘It is hardtosay whatthis is. The figure is like complanatus, but the shell, which is labeled raveneli Conrad and is in the Philadelphia Academy of Natural Sciences, is like lugubris. Proc. N. M. vol. xxii——46 (2% PROCEEDINGS OF THE NATIONAL MUSEUM. Vou. xxt. * CHENU, Bib. Conch., Ist ser., III, p. 9, pl. m1, fig. 8.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 256.—* B. H. Wriaur, Check List, 1888. ’ * Margarita (Unio) watereensis LEA, Syn., 1836, p. 31; ' 1838, p. 22. * Margaron ( Unio) watereensis, LEA, Syn., 1852, p. 33; 1870, p. 53. * Unio watereensis, H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p.493.—P «TEL, Conch. Sam., III, 1890, p. 172. *tUnio grigithianus, LEA, Tr. Am. Phil. Soc., V, 1834, p. 103, pl. xv, fig.46; Obs., I, 1834, p. 215, pl. xv, fig. 46.—* Ferussac, Guer. Mag., 1835, p. 29.—* HANLEY, Test. Moll., 1842, p.199; * Biv. Shells, 1845, p. 199, pl. x x11, fig. 28.—* CaTLow and REEVE, Conch. Nom., 1845, p.59.—*ConrabD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 250.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p 493.—* KusTEeR,Conch. Cab. Unio, 1861, p. 208, pl. Lx1x, fig. 2.—* SOWERBY, Conch. Icon., XVI, 1868, pl. LxxxIx, fig. 449.—* B. H. Wrient, Check List, 1888.—* ParreL, Conch. Sam., III, 1890, p. 154. * Margarita (Unio) griffithianus, LEA, Syn., 1836, p. 31; 1838, p. 22. * Margaron (Unio) grifithianus, LEa, Syn., 1852, p. 33; 1870, p. 52. *+ Unio planilaterus, CONRAD, Monog., XII (no date after 1838), p. 103, pl. Lvn, fig.1; Pr. Ac. N. Sci. Phila., VI, 1853, p. 255.—* B. H. Wricut, Check List, 1888.—* Pa&TEL, Conch. Sam., III, 1890, p. 163. * Margaron (Unio) planilaterus, LEA, Syn., 1870, p. 51. *+ Unio fuliginosus, LEA, Pr. Am. Phil. Soc., IV, 1845, p. 164; Tr. Am. Phil. Soe., ‘X, 1848, p. 78, pl. vu, fig. 19. *t Unio rufusculus Lea, Pr. Am. Phil. Soc., V, 1852, p. 252; *Tr. Am. Phil. Soc., X, 1852, p. 258, pl. xiv, fig. 7; *~Obs., V, 1852, p. 14, pl. xiv, fig. 7.—* Conran, Pr. Ac. N. Sci. Phila., VI, 1853, p. 257.—* H. and A. ApAMs, Gen. Rec. Moll., II, 1857, p. 493.—* SowERBY, Conch. Icon., XVI, 1868, pl. Lxxiu, fig. 377.— *B. H. Wricut, Check List, 1888.—* PaTEeL, Conch. Sam., ITI, 1890, p. 166. * Margaron (Unio) rufusculus Lea, Syn., 1852, p. 33; 1870, p. 54. *Mya rigida Woop, Ind. Test. Rev., 1856, p. 200, pl.1, supp. fig. 10. *+t Unio abbevillensis Lea, Pr. Ac. N. Sci. Phila., I, 1857, p. 84; * Jl. Ac. N. Sei. Phila., IV, 1858, p. 51, pl. vi, fig. 34; *Obs., VI, 1858, p. 51, pl. vi, fig. 34.—*B. H. Wricut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 1438. *Margaron (Unio) abbevillensis LEA, Syn., 1870, p. 52. *t Unio contractus Lira, Pr. Ac. N. Sei. Phila., I, 1857, p. 86; “JI. Ac. N. Sci. Phila., V, 1862, p. 203, pl. xx1x, fig. 272; *Obs., IX, p.25, pl. xxix, fig..272.—*B. H. Wriacut, Check List, 1888. * Margaron ( Unio) contractus LEA, Syn., 1870, p. 61. *tUnio virens Lua, Pr. Ac. N. Sci. Phila., IX, 1857, p. 169; *J1. Ac. N. Sei. Phila., IV, 1858, p. 80, pl. xvi, fig. 60; *Obs., VI, 1858, p. 80, pl. xvi, fig. 60.— *B. H. Wriecut, Check List, 1888. * Margaron (Unio) virens LEA, Syn., 1870, p. 52. *t Unio savannahensis Lea, Pr. Ac. N. Sci. Phila., IX, 1857, p. 169; *Jl. Ac. N. Sei. Phila., 1V, 1858, p. 81, pl. xvi, fig. 61; *Obs., VI, 1858, p. 81, pl. xv, fig. 61.— *B. H. Wricut, Check List, 1888. *Margaron ( Unio) savannahensis La, Syn., 1870, p. 51. *tCnio subflavus Lea, Pr. Ac. N. Sci. Phila., IX, 1857, p. 170; *J1. Ac. N. Sci. Phila., IV, 1858, p. 90, pl. x1x, fig. 70; *Obs., VI, 1858, p. 90, pl. xrx, fig. 70.— *B. H. Wricut, Check List, 1888. *Margaron ( Unio) subflavus LEa, Syn., 1870, p. 52. *tUnio neusensis LEA, Pr. Ac. N. Sci. Phila., IJ, 1858, p. 41; *Jl. Ac. N. Sci. Phila., V, 1859, p. 60, pl. tv, fig. 208; *Obs., VIII, 1860, p. 64, pl. Iv, fig. 208.—* B. H. WriGHrT, Check List, 1888. *Margaron ( Unio) neusensis LEA, Syn., 1870, p. 51. ‘Lea changed the name raveneli to watereensis, because the name ravenelianus had been applied by him to a Unio. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 723 =tT no eractus LEA, Pr. Ac. N. Sci. Phila., II, 1858, p.41; *Jl. Ac. N. Sci. Phila., V, 1862, p: 62; *Obs., VIII, 1860, p. 66, pl. rv, fig. 210.—* B. H. Wriceu7, Check List, 1888. *Margaron (Unio) exactus LEA,-Syn., 1870, p. 43. *+Unio roswellensis LEA, Pr. Ac. N. Sci. Phila., II, 1858, p. 165; *Jl. Ac. N. Sci. Phila., 1V, 1859, p. 205, pl. xxiv, fig. 87; *Obs., VII, 1859, p. 23, pl. xxiv, fig. 87.—* B. H. Wricut, Check List, 1888. *Margaron (Unio) roswellensis Lea, Syn., 1870, p. 51. *tUnio postellii Lua, Pr. Ac. N. Sci. Phila., II, 1858, p. 165; *J1. Ac. N. Sci. Phila., IV, 1859, p. 214, pl. xxvi, fig. 94; *Obs., VII, 1859, p. 32, pl. xxv1, fig. 94.— * SOWERBY, Conch. Icon., XVI, 1866, pl. XLVI, p. 255.—* B. H. Wriaut, Check List, 1888. *Margaron (Unio) postellit LEA, Syn., 1870, p. 51. *+ Unio baldwinensis Lra, Pr. Ac. N. Sci. Phila., III, 1859, p. 170; “Jl. Ac. N. Sci. Phila., TV, 1860, p. 330, pl. Li, fig. 155; *~Obs., VIII, 1860, p. 12, pl. 11, fig. 155.—* B. H. Wrieut, Check List, 1888. *Margaron (Unio) baldwinensis LEA, Syn., 1870, p. 51. *+ Unio raeensis LEA, Pr. Ac. N. Sci. Phila., III, 1859, p.171; * Jl. Ac. N. Sci. Phila., IV, 1860, p. 331, pl. Lu, fig. 156; *Obs., VIII, 1860, p. 13, pl. Lu, fig. 156.—* B. H. WriGut, Check List, 1888. *Margaron (Unio) raeensis LEA, Syn., 1870, p. 52. *tUnio quadratus Lea, Pr. Ac. N. Sci. Phila., III, 1859, p. 172; *Jl. Ac. N. Sci. Phila., IV, 1860, p. 338, pl. Liv, fig. 163; * Obs., VIII, 1860, p. 20, pl. LIv, fig. 163.—* B. H. Wrieut, Check List, 1888. *Margaron (Unio) quadratus La, Syn., 1870, p. 54. *+ Unio squameus LEA, Pr. Ac. N. Sci. Phila., V, 1861, p.391; *Jl. Ac. N. Sci. Phila., V, 1862, p. 200, pl. xxvul, fig. 269; * Obs., IX, 1863, p. 22, pl. xxvii, fig. 269.— ~B. H. Wricut, Check List, 1888. *Margaron (Unio) squameus LEA, Synu., 1870, p. 51. *Unio lugubris KUSTER, Conch. Cab. Unio, 1861, p. 234, pl. LX xx, fig. 1. *t Unio weldonensis Lua, Pr. Ac. N. Sei. Phila., VII, 1863, p. 191; *J1l. Ac. N. Sci. Phila., VI, 1866, p. 11, pl. 111, fig. 8; *Obs., XI, 1867, p. 15, pl. 101, fig, 8.— *B. H. Wricut, Check List, 1888. *Margaron (Unio) weldonensis LEA, Syn., 1870, p. d1. *+Unio gastonensis LEA, Pr. Ac. N. Sci. Phila., VII, 1863, p. 191; “Jl. Ac. N. Sci. Phila., VI, 1866, p. 20, pl. v1, fig. 18; *Obs., XI, 1867, p. 24, pl. v1, fig. 18.— *B. H. WricutT, Check List, 1888. * Margaron (Unio) gastonensis L&a, Syn., 1870, p. 51. * +t Unio aberrans LEA, Pr. Ac. N. Sci. Phila., VII, 1863, p. 191; * Jl. Ac. N. Sci. Phila., VI, 1866, p.7, pl. 1, fig. 3; *Obs., XI, 1867, p. 11, pl.1, fig. 3.—* B. H. WRIGHT, Check List, 1888. *Margaron (Unio) aberrans LEA, Syn., 1870, p. 52. *+ Unio mecklenbergensis LEA, Pr. Ac. N. Sci. Phila., VII, 1863, p. 191; *Jl. Ac. N. Sci. Phila., VI, 1866, p. 17, pl. v, fig. 15; * Obs., XI, 1867, p. 21, pl. v, fig. 15.— *B. H. WricGutT, Check List, 1888. Margaron (Unio) mecklenbergensis LEA, Syn., 1870, p. 51. *t Unio raleighensis Lra, Pr. Ac. N. Sci. Phila., VII, 1863, p.191; *Jl. Ac. N. Sci. Phila., VI, 1866, p.6, pl. 1, fig. 2; * Obs., XI, 1867, p. 10, pl. 1, fig. 2.—* B. H. WriGur, Check List, 1888. *Margaron ( Unio) raleighensis LEA, Syn., 1870, p. 52. *tUnio mediocris Lea, Pr. Ac. N. Sci. Phila., VII, 1863, p. 192; * Jl. Ac. N. Sci. Phila., VI, 1866, p. 24, pl. vul, fig. 22; *Obs., XI, 1867, p. 28, pl. vu, fig. 22. *Margaron (Unio) mediocris LEA, Syn., 1870, p. 52. *t Unio indefinitus LEA, Pr, Ac. N. Sci. Phila., VII, 1863, p. 192; *Jl. Ac. N. Sci. Phila., VI, 1866, p. 15, pl. 1v, fig. 12; *Obs., XI, 1867, p. 12, pl. rv, fig. 112.— *B. H. WriGHT, Check List, 1888. 724 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. * Margaron (Unio) indefinitus LEA, Syn., 1870, p. 51. *+Unio humerosus LEA, Pr. Ac. N. Sci. Phila., XII, 1868, p. 161; * Jl. Ac. N. Sci. Phila., VI, 1868, p. 301, pl. xLv, fig. 113; *Obs., XII, 1869, p. 61, pl. XLy, fig. 113.—* B. H. Wrieut, Check List, 1888. * Margaron (Unio) humerosus Lua, Syu., 1870, p. 51. “t+ Unio beaverensis Lea, Pr. Ac. N. Sci. Phila., XII, 1868, p. 161; *Jl. Ac. N. Sci. © Phila., V1, 1868, p. 297, pl. xutv, fig. 109.—* Obs., XII, 1869, p. 57, pl. xzrv, fig. 109.—* B. H. Wricut, Check List, 1888. * Margaron ( Unio) beaverenses LEA, Syn., 1870, p. 52. * Unio bleaverenses PATEL, Conch. Sam., III, 1890, p. 146. *@ Unio neglectus SOWERBY, Conch. Icon., XVI, 1868, pl. Lxv, fig. 329. * Unio tortuosus SOWERBY, Conch. Icon., XVI, 1868, pl. Lxv, fig. 330.—* PaTEL, Conch. Sam., ITI, 1890, p. 169. * Unio uhareensis Lra, Pr. Ac. N. Sci. Phila., XII, 1868, p. 145; *Jl. Ac. N. Sci. Phila., VI, 1868, p. 304, pl. xLv1, fig. 116; *Obs., XII, 1869, p. 63, pl. XLVI, fig. 116.—* B. H. Wricut, Check List, 1888. * Margaron (Unio) uhareensis LEA, Syn., 1870, p. 52. *+ Unio nubilus Lea, Pr. Ac. N. Sci. Phila., XII, 1868, p.161; *Jl. Ac. N. Sci. Phila., VI, 1868, p. 298, pl. xLrv, fig. 110; *Obs., XII, p. 58, pl. xrv, fig. 110.—* B. H. WricutT, Check List, 1888. * Margaron (Unio) nubilus Lra, Syn., 1870, p. 51. *+ Unio yadkinensis Lea, Pr. Ac. N. Sci. Phila., II, 1872, p. 156; *Jl. Ac. N. Sci. Phila., VIII, 1874, p. 32, pl. x, fig. 29; *Obs., XIII, 1874, p. 36, pl. x, fig. 29.— *B. H. Wricut, Check List, 1888.—*PaTEL, Conch. Sam., III, 1890, p. 155. *+ Unio amplus LEA, Pr. Ac. N. Sci. Phila., II, 1872, p. 157; *J1. Ac. N. Sci. Phila., VIII, 1874, p. 39, pl. x11, fig. 36; *Obs., XIII, 1874, p. 43, pl. x11, fig. 36.-— *B. H. Wricut, Check List, 1888. *t Unio ligatus Lua, Pr. Ac. N. Sci. Phila., II, 1872, p. 157; *J1. Ac. N. Sci. Phila., VIII, 1874, p. 49, pl. xvi, fig. 47; *Obs., XIII, 1874, p. 53, pl. xvu, fig. 47; *B. H. Wriaut, Check List, 1888. “t+ Unio subparallelus LEA, Pr. Ac. N. Sci. Phila., II, 1872, p. 158; * Jl. Ac. N, Sci. Phila., VIII, 1874, p. 46, pl. xvi, fig.44; Obs., XIII, 1874, p. 50, pl. xvi, fig. 44,—* B, H. Wriaut, Check List, 1888. *+ Unio irwinensis Lia, Pr. Ac. N. Sci. Phila., II, 1872, p. 159; * Jl. Ac. N. Sci. Phila., VIII, 1874, p. 44, pl. xv, fig. 42; *Obs., XIII, 1874, p. 48, pl. xv, fig. 42.—*B. H. Wricut, Check List, 1888. *+ Unio curvatus LA, Pr. Ac. N. Sci. Phila., II, 1872, p. 159; *J1. Ac. N. Sci. Phila., VIII, 1874, p. 38, pl. xu, fig. 35; *Obs., XIII, 1874, p. 42, pl. x1, fig. 35. “+Unio subsquamosus LEA, Pr. Ac. N. Sci. Phila., II, 1872, p. 160; *Jl. Ac. N. Sci. Phila., VIII, 1874, p. 47, pl. xvi, fig. 45; *Obs., XIII, 1874, p. 51, pl. xvi, fig. 45.—* B. H. Wriaut, Check List, 1888. *+ Unio infuscus LBA, Pr. Ac. N. Sci. Phila., II, 1872, p. 160; *J1l. Ac. N. Sci. Phila., VIII, 1874, p. 51, pl. xvur, fig. 49; *Obs., XIII, 1874, p. 55, pl. xvi, fig. 49.— * PATEL, Conch. Sam., III, 1890, p. 155. *t+Unio ratus LEA, Pr. Ac. N. Sci. Phila., II, 1872, p. 160; *J1. Ac. N. Sci. Phila., VIII, 1874, p. 52, pl. xv, fig. 51; *Obs., XIII, 1874, p. 56, pl. x vin, fig. 51; *B. H. Wriaut, Check List, 1888.—*PatTEL, Conch. Sam., III, 1890, p. 165. * + Unio basalis Lma, Pr. Ac. N. Sci. Phila., II, 1872, p. 161; *Jl. Ac. N. Sci. Phila., VIII, 1874, p. 48, pl. xvi, fig. 46; *Obs., XIII, 1874, p. 52, pl. xvi, fig. 46.— *B. H. Wricut, Check List, 1888. *tUnio swbolivaceus Lua, Pr. Ac. N. Sci. Phila., III, 1873, p.422; *J1. Ac. N. Sci. Phila., VIII, 1874, p. 57, pl. xx, fig. 56; *Obs., XIII, 1874, p. 61, pl. xx, fig. 56.—* B. H. Wricut, Check List, 1888. y *+Unio infulgens Lea, Pr. Ac. N. Sci. Phila., III, 1873, p. 422; *Jl. Ac. N. Sci. Phila., VIII, 1874, p. 60, pl. xx1, fig. 59; *“Obs., XIII, 1874, p. 64, pl. xx1, fig. 59.—* B. H. Wricut. Check List, 1888. ; No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 725 *+Unio cirratus LEA, Pr. Ac. N. Sci. Phila., III, 1873, p. 422; *J1. Ac. N. Sci. Phila., VIII, 1874, p. 5d, pl. xrx, fig. 53; *Obs., XIII, 1874, p. 59, pl. xix, fig. 53.— *B. H. Wriaat, Check List, 1888. *tUnio corneus Lea, Pr. Ac. N. Sci. Phila., III, 1873, p. 423; *Jl. Ac. N. Sci. Phila., VIII, 1874, p. 59, pl. xx, fig. 58; *Obs., XIII, 1874, p. 63, pl. xx, fig. _58.—*B. H. Wriaut, Check List, 1888. *+ Unio invenustus Lua, Pr. Ac. N. Sci. Phila., III, 1875, p. 424; *J1. Ac. N. Sci. Phila., VIII, 1874, p. 66, pl. xxu, fig. 62; *Obs., XIII, 1874, p. 70, pl. xx11, fig. 62.—* B. H. Wricut, Check List, 1888. *t Arconaia provancheriana PILSBRY, Nat. Canadienne, XX, 1890, p.171; *Pr. Ac. N. Sci. Phila., 1892, p..132, pl. vu, figs. 4—6.! + UNIO COMPLANATUS var. JEJUNUS Lea. * Unio jejunus Lea, Tr. Am. Phil. Soc., VI, 1838, p. 9, pl. Iv, fig. 9; *Obs., II, 1838, p. 9, pl. 1v, fig. 9.—* TroscHEL, Arch. fiir Nat., V, 1839, Pt. 2, p. 234.— *HANLEY, Test. Moll., 1842, p. 199; * Biv. Shells, 1843, p. 199, pl. xx, fig. 47.—* CATLOW and REEVE, Conch. Nom., 1845, p. 60.—* Conran, Pr. Ac. N. Sei. Phila., VI, 1853, p. 251.—* H. and A. ApAms, Gen. Rec. Moll., II, 1857, p. 493.—* KustTER, Conch. Cab. Unio, 1862, p. 265, pl. xc, fig. 1.—* ?SowErBy, Conch. Icon., XVI, 1868, pl. Lx vii, fig. 547.2—* B. H. Wrigut, Check List, 1888.—P#TEL, Conch. Sam., III, 1890, p. 155. * Margarita (Unio) jejunus LEA, Syn., 1836, p. 30; 1838, p. 22. * Margaron ( Unio) jejunus Lea, Syn., 1852, p. 32; 1870, p. 51. *tUnio percoarctatus Lea, Pr. Ac. N. Sci. Phila., I, 1857, p.85; *Jl. Ac. N. Sci. Phila., V, 1862, p. 59, pl. 1, fig. 206; *Obs., VIII, 1862, p. 63, pl. m1, fig. 206.— *SOWERBY, Conch. Icon., XVI, 1866, pl. LIV, fig. 277.—* B. H. Wrient, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 163. * Margaron (Unio) percoarctatus LEA, Syn., 1870, p. 51. + UNIO COMPLANATUS var. QUADRILATERUS Lea. *Unio squalidus Lua, in part, Pr. Ac. N. Sci. Phila., VIJ, 1863, p.192; Jl. Ac. N. Sci. Phila., VI, 1866, p. 22, pl. vu, fig. 20; Obs., XI, 1867, p. 26, pl. vu, fig. 20.—* B. H. WriGut, Check List, 1888.—* Simpson, Pr. U.S. Nat. Mus., XV, 1892, p. 429, pl. LXXxI, fig. 14. * Margaron (Unio) squatidus Lea, Syn., 1870, p 51. *+ Unio quadrilaterus Lea, Pr. Ac. N. Sci. Phila., VII, 1863, p.192; Jl. Ac. N. Sci. Phila., VI, 1866, p. 5, pl. 1, fig. 1; Obs., XI, 1867, p. 9, pl. 1, fig. 1.—* B. H. Wriaut, Check List, 1888. * Margaron (Unio) quadrilaterus Lea, Syn., 1870, p. 51. Atlantic drainage from the St. Lawrence to Georgia; west in the British possessions to Manitoba? tUNIO CATAWBENSIS Lea. * Unio wheatleyi Lua, Pr. Ac. N. Sci. Phila., 1857, I, p.85;° * Jl. Ac. N. Sci. Phila., V, 1861, p.54, pl.1, fig. 200; Obs., VIII, p. 58, pl. 1, fig. 200.—* B. H. Wriaut, Check List, 1888.—* Pate, Conch. Sam., ITI, 1890, p. 147. * Margaron ( Unio) catawbensis Lra, Syn., 1870, p. 52. 1Said to come from Yamaska River, China. The type is a twisted Unio complanatus, probably from Canada. 2Tn errata he savs this is depressus of @Orbigny, not Lamarck. It is hard to say what it is. 3 Preoccupied by Lea and changed by him to catawbensis. 726 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. * Unio rostrum Lua, Pr. Ac. N. Sci. Phila., VIII, 1861, p.391; *Jl. Ac. N. Sei. Phila., V, 1862, p. 201, pl. xx1x, fig. 270; Obs., IX, 1863, p. 23, pl. xxx, fig. 270.—* B. H. WriGut, Check List, 1888. * Margaron (Unio) rostrum LEA, Syn., 1870, p. 52. * + Unio oblongus Lea, Pr. Ac. N. Sci. Phila., II, 1872, p. 158; ~Jl. Ac. N. Sci. Phila., VIII, 1874, p. 52, pl. xvut, fig. 50; Obs., XIII, 1874, p. 56, pl. xvii, fig. 50. North Carolina. + UNIO TUOMEYI Lea. * Unio tuomeyi Lea, Tr. Am. Phil. Soc., X, 1852, p. 256, pl. xi, fig.4; *Obs., V, 1852, p. 12, pl. xm, fig. 4.—* H.and A. ApAms, Gen. Rec. Moll., II, 1857, p. 493.—* B. H. WrieuT, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 170. d *Margaron (Unio) tuomeyi LEA, Syn., 1852, p. 335 1870, p. 53. *t Unio barrattit LEA, Tr. Am. Phil. Soc., X, 1852, p. 256, pl. x1, fig.5; *Obs.,V, 1852, p. 12, pl. x11, fig. 5.—* ConrRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 245.— *H.and A. Adams, Gen. Rec. Moll., II, 1857, p.491.—* B. H. Wrient, Check List, 1888. *Margaron (Unio) barrattii LEA, Syn., 1852, p.37; 1870, p. 245. * Unio barrotti PHTEL, Conch. Sam., III, 1890, p. 145. *t Unio pullatus Lea, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 262; *Jl. Ac. N. Sci. Phila., IV, 1858, p. 57, pl. vu, fig. 39; *Obs., VI, 1258, p.57, pl. vim, fig. 39.— *KUSTER, Conch. Cab. Unio, 1871, p. 247, pl. LXxxiu, fig.3.—* SOWERBY, Conch. Icon., XVI, 1868, pl. LXv1, fig. 335.—*B. H. Wricut, Check List, 1¢88.—* P&TEL, Conch. Sam., III, 1890, p. 164. *Margaron (Unio) pullatus Lea, Syn., 1870, p. 60. *t Unio sublatus LEA, Pr. Ac. N. Sci. Phila., IX, 1857, p. 169; * Jl. Ac. N. Sci. Phila., IV, 1858, p. 82, pl. xvi, fig. 62; *Obs., VI, 1858, p. 82, pl. x v1, fig. 62.—*B. H. WriGut, Check List, 1888. * Margaron (Unio) sublatus Lea, Syn., 1870, p. 57. *+t Unio fumatus LEA, Pr. Ac. N. Sci. Phila., IX, 1857, p.171; * Jl. Ac. N. Sei. Phila., IV, 1858, p. 88, pl. xvul, fig. 68; *Obs., VI, 1858, p. 88, pl. xvin, fig. 68.— *B. H. WRIGHT, Check List, 1888. *Margaron (Unio) fumatus Lea, Syn., 1870, p. 52. *tUnio viridiradiatus Lea, Pr. Ac. N. Sei. Phila., III, 1859, p. 154; *Jl. Ac. N. Sci. Phila., IV, 1860, p.336, pl. Li, fig. 161; *Obs., VIII, p. 18, pl. Lim, fig. 161.— *B.H.WriacuHt, Check List, 1888. *Margaron (Unio) viridiradiatus LEA, Syn., 1870, p. 46. *tUnio viridans Lea, Pr. Ac. N.Sci. Phila., III, 1859, p. 170; “Jl. Ac. N. Sci. Phila., IV, 1860, p. 337, pl. LIV, fig. 162; *Obs., VIII, 1860, p. 19, pl. x1Vv, fig. 162.—*B. H. WriGuaT, Check List, 1888. *Margaron (Unio) viridans LEA, Syn., 1870, p. 52. *t Unio hallenbeckti Lua, Pr. Ac. N. Sci. Phila., III, 1859, p. 170; *J1. Ac. N. Sei. Phila., IV, 1860, p. 328, pl. LI, fig. 15453! *Obs., VIII, 1860, p. 10, pl. 11, fig. 154,.— *B. H. WRIGHT, Check List, 1888. *Margaron (Unio) hallenbeckit LEA, Syn., 1870, p. 52. *tUnio salebrosus Lra, Pr. Ac. N. Sci. Phila, XI, 1859, p. 170; *J1. Ac. N. Sci. Phila., IV, 1860, p. 332, pl. Lu, fig. 157; *Obs., VIII, 1860, p. 14, pl. Li, fig. 157.—*B. H. Wrieut, Check List, 1888.—*PaTEL, Conch. Sam., III, 1890, p. 166. *Margaron ( Unio) salebrosus LEA, Syn., 1870, p. 52. *tUnio verutus Lea, Pr. Ac. N. Sci. Phila., III, 1859, p. 171; *Jl. Ac. WW. Sei. 1 Extra copies of the paper containing this species were published in December, 1858. No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 727 Phila., IY, 1860, pl. Lin, fig. 160; *Obs., VIII, 1860, p. 17, pl. Lim, fig. 160.— *B. H. WrieuT, Check List, 1888.—*PaTEL, Conch. Sam., III, 1890, p. 171. * Margaron ( Unio) verutus Lia, Syn., 1870, p. 57. *t Unio chathamensis LEA, Pr. Ac. N. Sci. Phila., VII, 1863, p. 191; “Jl. Ac. N. Sci. Phila., VI, 1866, p. 21, pl. vi, fig.19; *“Obs., XI, 1867, p. 25, pl. v1, fig. 19.— *B. H. Wricut, Check List, 1888. Margaron (Unio) chathamensis LEA, Syn., 1870, p. 53. *t Unio hastatus Lea, Pr. Ac. N. Sci. Phila., III, 1873, p. 423; *Jl. Ac. N. Sci. Phila., VIII, 1874, p. 56, pl. xrx, fig. 54; “Obs., XIII, 1874, p. 60, pl. xrx, fig. 54.—"B. H. Wriaut, Check List, 1888. *tUnio dooleyensis Lea, Pr. Ac. N. Sci. Phila., III, 1873, p. 424; *Jl. Ac. N. Sci. Phila., VIII, 1874, p. 64, pl. xxu, fig. 60; *Obs., XIII, 1874, p. 68, pl. x x11, fig. 60.—* B. H. Wriacut, Check List, 1888. : *t Unio gesnerit Lea, Pr. Ac. N. Sci. Phila., III, 1874, p.424; “Jl. Ac. N. Sci. Phila., VIII, 1874, p. 65, pl. xxi, fig. 64; *Obs., XIII, 1874, p. 69, pl. xxu, fig. 61.— *SoOwERBY, Conch. Icon., XVI, 1868, pl. LXxx1tv, fig. 446.—* B. H. Wricurt, Check List, 1888. North Carolina to Alabama. +t UNIO OCMULGEENSIS Lea. *Unio ocmulgeensis LEA, Pr. Ac. N. Sci. Phila., V, 1861, p. 38; * Jl. Ac. N. Sci. Phila., V, 1862, p. 95, pl. xiv, fig. 243; *~Obs., VIII, 1862, p. 99, pl. xiv, fig. 243.— *Smmpson, Pr. U. &. Nat. Mus., XV, 1892, p. 424, pl. Lxvul, fig. 5.—*B. H. WRiGHT, Check List, 1888. *Margaron (Unio) ocmulgeensis LEA, Syn., 1870, p. 57. Georgia. +UNIO AQUILUS Lea. * Unio aquilus LEA, Pr. Ac. N. Sci. Phila., IX, 1857, p.172; *Jl. Ac. N. Sci. Phila., IV, 1858, p. 92, pl. xx, fig.72; *Obs., VI, 1858, p. 92, pl. xx, fig. 72.—*B. H. WriGHt, Check List, 1888.—*PaTEL, Conch. Sam., III, 1890, p. 144. *Margaron (Unio) aquilus Lea, Syn., 1870, p. 60. South Georgia and northern Florida. tUNIO ICTERINUS Conrad. * Unio icterinus CONRAD, New EF. W. Shells, 1834, pl. vi, fig.5, p. 69.—* FERUSSAC, Guer. Mag., 1835, p. 29.—* CONRAD, Monog., IV, 1836, p. 39, pl. xv11l, fig. 2.— *MOLLER, Syn. Nov. Gen., 1836, p. 206.—* CHENU, Bib. Conch., 1st ser., III, 1845, p. 20, pl. 1, fig. 5.—*Conrapb, Pr. Ac. N.Sci. Phila., VI, 1853, p. 250.— *B. H. Wriaut, Check List, 1888. “tUnio fuliginosus LEA, Pr. Am. Phil. Soc., IV, 1845, p. 164; * Tr. Am. Phil. Soce., X, 1848, p. 78, pl. vu, fig. 19; * Obs., IV., 1848, p. 52, pl. vu, fig. 19.—*CoNnrRab, Pr. Ac. N. Sci. Phila., VI, 1853, p. 250.—*H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 493.—* Bb. H. Wricut, Check List, 1888.—*PaTEL, Conch. Sam., ILI, 1890, p. 153. *Margaron (Unio) fuliginosus LEA, Syn., 1852, p. 33; 1870, p. 53. *tUnio cuvierianus Lea, Tr. Am. Phil. Soc., IX, 1852, p. 263, pl. xvi, fig. 16; Obs., V, 1852, p. 19, pl. xv, fig. 16.—*Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 248.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 493.—*B. H. WriGuHrt, Check List, 1888.—*PatTEL, Conch. Sam., III, 1890, p. 150. *Margaron (Unio) cuvierianus Lea, Syn., 1852, p. 32; 1870, p. 51. *t Unio curatus LEA, Pr. Ac. N. Sci.Phila., VII, 1863, p. 193; *J1. Ac. N. Sci. Phila., 728 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. VI, 1866, p. 23, pl. vu, fig. 21; Obs., XI, 1867, p. 27, pl. vil, fig. 21.—*B. H. WRIGHT, Check List, 1888.—*P «TEL, Conch. Sam., III, 1890, p.149. *Margaron (Unio) curatus Lea, Syn., 1870, p. 46. *+ Unio datus LEA, Pr. Ac. N. Sci. Phila., XII, 1868, p.161; *J1. Ac. N. Sci. Phila., VI, 1868, p. 299, pl. xLIVv, fig. 3; *Obs., XII, 1869, p. 59, pl. xLIv, fig.3.—* B. H. ~ WRIGHT, Check List, 1888.—*PaTEL, Conch. Sam., ITI, 1890, p. 150. *Margaron (Unio) datus Lea, Syn., 1870, p. 45. *Unio vatus PaTEL, Conch. Sam., III, 1890, p. 172. *+ Unio cuspidatus, LEA, Pr. Ac. N. Sci. Phila., IT, 1872, p.159; *J1. Ac. N. Sci. Phila., VIII, 1874, p. 43, pl. xiv, fig. 50; *Obs., XIII, 1874, p.47, pl. xtv, fig. 40.— *B. H. Wriacut, Check List, 1888.—*PaTEL, Conch. Sam., ITI, 1890, p. 150. North Carolina to Georgia. +UNIO ROANOKENSIS Lea. * Margarita (Unio) roanokensis LEA, Syn., 1836, p. 30; 1838, p. 21. * Unio roanokensis LEA, Tr. Am. Phil. Soc., VI, 1838, p. 27, pl. vin, fig. 21; Obs., II, 1838, p. 27, pl. vi, tig. 21.—* TroscuHEL, Arch. fiir Nat., V, 1839, Pt. 2, p. 935.—* HANLEY, Test. Moll., 1842, p. 199; * Biv. Shells, 1843, p. 199.—* Cat- Low and REEVE, Conch. Nom., 1845, p.63.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 275.—* CuENU, II]. Conch., 1858, pl. xXx, tigs. 6, 6a, 6b.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 493.—* SowERBy, Conch. Icon., XVI, 1868, pl. LX VI, fig. 341.—* B. H. Wricut, Check List, 1888.—* Pa TEL, Conch. Sam. III, 1890, p. 165. * Margaron (Unio) Lra, Syn., 1852, p. 32; 1870, p. 51. “t Unio macer LEA, Pr. Ac. N. Sci. Phila., I, 1857, p. 86; * Jl. Ac. N. Sci. Phila., VI, 1862, p. 202, pl. xx1x, fig. 271; *Obs., IX, 1863, p. 24, pl. xxix, fig. 271. * Margaron (Unio) macer LEA, Syn., 1870, p. 51. *t Unio latus Lma, Pr. Ac. N. Sci. Phila., III, 1859, p. 171; * JI. Ac. N. Sci. Phila., IV, 1860, p. 334, pl. Li, fig. 159; *Obs., VIII, 1860, p. 16, pl. Lit, fig. 159.— *B. H. Wricut, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 157. * Margaron (Unio) latus LEA, Syn., 1870, p. 57. +UNIO ROANOKENSIS var. NORTHAMPTONENSIS Lea. * Unig northamptonensis LeaA,! Pr. Ac. N. Sci. Phila., V, 1861, p. 392; *J1. Ac. N. Sci. Phila., V., 1862, p. 190, pl. xxv, fig. 260; *Obs., IX, 1863, p. 12, pl. xxv, fig. 260.—* B. H. Wriaut, Check List, 1888. *Margaron (Unio) northamptonensis LEA, Syn., 1870, p. 51. Connecticut River at Northampton, Massachusetts; south to the Savannah River, Georgia. + UNIO HOPETONENSIS Lea. “Unio hopetonensis LEA, Tr. Am. Phil. Soc., VI, 1838, p. 29, pl. 1x, fig. 24; * Obs., IT, 1838, p. 29, pl. 1x, fig. 24.—* TroscuEL, Arch. fiir Nat., VI, 1839, Pt. 2. p. 235.— * HaNnLEY, Test. Moll., 1842, p. 198; * Biv. Shells, 1843, p. 198, pl. xx, fig. 21.— *CaTLOW and REEVE, Conch. Nom., 1845, p. 60.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 493.—*CuEnu, Il]. Conch., 1858, pl. xx, figs. 5, 5a, 5b.— *KusTEr, Conch. Cab. Unio, 1861, p. 196, pl. LxuI, fig. 1.—* SowERBy, Conch. Icon., XVI, 186%, pl. Lxvin, fig. 349.—* B. H. WricHt, Check List, 1A large, compressed form, biangulate behind, the posterior point elevated above the base line. Certain specimens are considerably inflated in the post basal region. This is generally taken for U. complanatus, but it differs in the characters given above, and seems to be merely a northern variety of roanokensis. NO. 1205. - SYNOPSIS OF THE NAIADES—SIMPSON. (, 1888.—* Pret, Conch. Sam., III, 1890, p. 155.—* Simpson, Pr. U. S. Nat. Mus., XV, 1892, p. 412, pl. Lu, fig.3; Lil, fig. 1. * Margarita (Unio) hopetonensis Lma, Syn., 1836, p. 30; 1838, p. 21. * Margaron (Unio) hopetonensis LEA, Syn., 1852, p. 32; 1870, p. 51. lo) Georgia, in streams flowing into the Atlantic; Santee Canal, South Carolina; northern Florida. +UNIO LIVINGSTONENSIS Lea. * Unio livingstonensis LEA, Pr. Ac. N. Sci. Phila., VII, p. 192; * JI. Ac. N. Sci. Phila., WE ds66. ps4 pl. Iv, tio ly Obs: XL sbi, sp. 18) pl. rv, age li —* 8. i: WricGut, Check List, 1888. *Margaron (Unio) livingstonensis LEA, Syn., 1870, p. 52. North Carolina to Georgia. + UNIO INUSITATIS Lea. * Unio inusitatis Lea, Pr. Ac. N. Sei. Phila., III, 1859, p.171; * Jl. Ac. N. Sci. Phila., IV, 1860, p.333, pl. Lu, fig. 158; *Obs., VIII, 1860, p. 15, pl. L11, fig. 158. *Margaron (Unio) inusitatus LEA, Syn., 1870, p. 51. * Unio insitatus Bs H. Wricut, Check List, 1888. Georgia. + UNIO DIFFERTUS Lea. *Unio differtus Lua, Pr. Ac. N. Sci. Phila., II, 1872, p. 158; *J1. Ac. N. Sci. Phila., VIII, 1874, p. 42, pl. xiv, fig. 39; *Obs., *B. H. Wricut, Check List, 1888. Georgia. XIII, 1874, p. 46, pl. xv, fig. 39.— + UNIO PLANTII Lea. *Unio plantiit Lea, Pr. Ac. N. Sci. Phila., IX, 1857, p.171; *Jl. Ac. N. Sci. Phila., VPS 5 9 pel 92 ple exoxt oe (On Obs: nV Ll, 1859. p. 105 pleexext, fied Os * SOWERBY, Conch. Icon., XVI, 1868, pl. LXXxvil, fig. 475.—*B. H. WRIGHT, Check List, 1888.—* P#TEL, Conch. Sam., 1888. *Margaron (Unio) plantii LEA, Syn., 1870, p. 43. Flint River, near Macon, Georgia. +UNIO STRUMOSUS Lea. *Unio strumosus LEA, Pr. Ac. N. Sci. Phila., II, 1872, p. 158; III, 1878, p. 423; *J1. Ac. N. Sci. Phila., VIII, 1874, p. 57, pl. xix, fig. 55; *Obs., XIII, 1874, p. 61, pl. x1Xx, fig. 55.—* B. H. Wrieut, Check List, 1888. Yadkin River, North Carolina. + UNIO PURUS Lea. *Unio purus Lea, Pr. Ac. N. Sci. Phila., II, 1858, p. 41; *J1. Ac. N. Sci. Phila., V, 1862, p. 61, pl. Iv, fig. 209; *Ubs., VIII. 1862, p. 65, pl. 1v, fig. 209.—* B. H. Wricut, Check List, 1888. *Margaron (Unio) purus LEA, Syn., 1870, p. 43. Neuse River, near Raleigh, North Carolina. =1 ew =) PROCEEDINGS OF THE NATIONAL MUSIUM. VOL. XXTi. + UNIO SUBNIGER Lea. *Unio subniger Lea, Pr. Ac. N. Sci. Phila., [X, 1857, p.172; “Jl. Ac. N. Sci. Phila., IV, 1859, p. 196, pl. xx11, fig. 79; *Obs., VII, 1859, p. 14, pl. xx11, fig. 79.—*B. H. Wricnr, Check List, 1888. *Margaron ( Unio) subniger LEA, Syn., 1870, p. 52. Georgia. tUNIO BURKENSIS Lea. *Unio burkensis LEA, Pr. Ac. N. Sci. Phila., III, 1859, p. 112; *Jl. Ac. N. Sei. Phila., IV, 1859, p. 215, pl. xxvui, fig. 95; *Obs., VII, 1859, p. 33, pl. xxvu, fig. 99.—* B. H. Wricut, Check List, 1888. : * Margaron (Unio) burkensis LEA, Syn., 1870, p. 60. * + Unio dissimilis Lea, Pr. Ac. N. Sci. Phila., II, 1872, p. 161; *Jl. Ac. N. Sci. Phila., VIII, 1874,p. 53, pl. xvii, fig. 52; *Obs., XIII, 1874, p. 57, pl. xvi fig. 52.—* B. H. Wriaut, Check List, 1888. North Carolina; south to Georgia. tUNIO OBLATUS Lea. *Unio ablatus LEA,! Pr. Ac. N. Sci. Phila., VII, 1863, p. 193. *OUnio oblatus Lea, J]. Ac. N. Sci. Phita., VI, 1866, p. 13, pl. Iv, fig. 10; * Obs. XI, 1867, p. i7, pl. Iv, fig. 10. *Margaron (Unio) oblatus LEA, Syn., 1870, p. 60. Long Creek, Gaston County, North Carolina. +t UNIO ERRANS Lea. tUnio paliatus RAVENEL, letter.2~—* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 254.—* H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 493. * Margarita (Unio) paliatus LEA, Syn., 1836, p. 31; 1838, p. 22. *Margaron (Unio) paliatus Lea, Syn., 1852, p. 33; 1870, p. 53. *Unio palliatus RAVENEL, Cat., 1875, p. 57.35—* B. H. Wriaut, Check List, 1888.— *PxTEL, Conth. Sam., III, 1890, p. 162. * Unio errans LEA, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 262; * Jl. Ac. N. Sci. Phila., IV, 1858, p. 60, pl. rx, fig. 42; *Obs., VI, 1858, p. 60, pl. rx, fig. 42.—* B. H. WriGurT, Check List, 1888. * Margaron ( Unio) errans Lm, Syn., 1870, p. 52. *t Unio vicinus Lra, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 262; *J1. Ac. N. Sci. Phila., IV, 1858, p. 61, pi. rx, fig. 48; * Obs., VI, 1858, p. 61, pl. rx, fig. 43.—* B. H. Wriacut, Check List, 1888. * Margaron (Unio) vicinus LEA, Syn., 1870, p. 52. Near Macon, Georgia; South Carolina. 1So written in first description. A typographical error, probably. Dr. Lea after- wards changed the name to oblatus. 2Dr. Lea credits this to Ravenel’s letter, but neither he nor Ravenel ever described it so far as I know. 3’ Ravenel here credits this species to Lea. Lea’s specimens, received from Ravenel, are marked Santee Canal and South Carolina. They are rather thin and delicate, of a peculiar texture, and have a shining brownish green epidermis. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 731 tUNIO SAGITTIFORMIS Lea.|! * Unio sagittiformis LEA, Tr. Am. Phil. Soc., X, 1852, p. 277, pl. xxu, fig. 35; * Obs.,V, 1852, p. 38, pl. xx, fig. 35.—* ConrabD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 257.— *H.and A. Apams, Gen. Rec. Moll, II, 1857, p. 491.—* SowERBy, Conch. Icon., XVI, 1868, pl. xcrt, fig. 499.—* B. H. Wriaut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 166. * Margaron (Unio) sagittiformis Lea, Syn., 1852, p. 37; 1870, p. 60. Oconee River, Georgia; Abbeville, South Carolina. +UNIO ANGUSTATUS Lea. * Unio angustatus Lea, Tr. Ai. Phil. Soc., IV, 1831, p. 114, pl. xvn, fig. 43; “Obs., I, 1834,p. 124, pl. x vil, fig. 43.—* Conran, New £. W. Shells, 1834, p. 67.— *FERus- sac, Guer. Mag., 1835, p. 26.—* ConrabD, Monog., XI, 1838, p. 98, pl. LIV, fig. 2.—* HANLEY, Test. Moll., 1842, p. 204; * Biv. Shells, 1843, p. 204, pl. x x11, fig. 25.—* CATLOW and REEVE, Conch. Nom 1845, p. 55.—* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 245.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 491.— * CHENU, III. Conch. 1858, pl. x1v, figs. 1, la, 1b.—* KusrER, Conch. Cab. Unio, 1861, p. 178, pl. Lv1, fig. 4.—* SowERBY, Conch. Icon., XVI, 1868, pl. Lx x11, fig. 372.—* B. H. Wricut, Check List, 1888.—* PaTeL, Conch. Sam., III, 1890, p. 144. * Margarita (Unio) angustatus Lea, Syn., 1836, p. 35; 1838, p. 23. * Margaron (Unio) angustatus LEA, Syn., 1852, 105 31019 ‘1870, p.57 *+ Unio extensus Lwa, Pr. Ac. N. Sci. Phila., IX, 1857, Dreole oak Ac. N. Sci. Phila., IV, 1858, p. 68, pl. xu, fig. 49; * Obs., VI, 1868, p. 67, pl. xu, fig. 49.—* B. H. WriGuHt, Check List, 1888. | GEOL extensus LEA, Syn., 1870, p. 60. *+ Unio subcylindraceus LEA, Pr. Ac. N. Sci. Phila., III, 1873, p.422; *J1. Ac. N. Sci. Phila., VIII, 1874, p. 58, pl. xx, fig. 57; « Obs., XIII, 1874, p. 62, pl. xx, fig. 57.—* CATLOW and REEVE, Gonen: Nome 1845, .. 64.—* B. H. WRIGHT, Check List, 1888. South Carolina to western Georgia. - t UNIO PERSTRIATUS Lea. * Unio perstriatus Lea, Tr. Am. Phil. Soc., X, 1852, p. 255, pl. x11, fig. 3; *Obs., V, 1852, p. 11, pl. xu, fig. 3.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 255.— *H. and A. ADams, Gen. Rec. Moll., II, 1857, p. 491.—* Sowrrsy, Conch. Icon., XVI, 1868, pl. xcu, fig. 500.—* B. H. Wriaut, Check List, 1888.— *PmTEL, Conch. Sam., III, 1890, p. 163. * Margaron (Unio) perstriatus LEA, Syn., 1852, p.36; 1870, p. 57. *+t Unio gracilentus Lea, Pr. Ac. N. Sci. Phila., I, 1857, p.85; *J1. Ac. N. Sci. Phila., V, 1862, p. 58, pl. 111, fig. 205; *Obs., VIII, 1862, p. 62, pl. 1m, fig. 205.—* B. H. Wriaut, Check List, 1888. * Margaron (Unio) gracilentus LEA, Syn., 1870, p. 60. *+tUnio perlatus Lea, Pr. Ac. N. Sci. Phila., VII, 1863, p.193; *Jl. Ac. N. Sci., VI, 1866, p. 15, pl. 1v, fig. 13; *Obs., XI, 1867, p. 19, pl. iv, fig. 12.—* B. H.WrieHut, Check List, 1888. * Margaron (Unio) perlatus LEA, Syn., 1870, p. 60. North and South Carolina. LA very singular shell, much cut away at the anterior base, and, perhaps, abnormal. , 2 2 9 ) (a2 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. UNIO NAVICULOIDES Lea. * Unio naviculoides LEA, Pr. Ac. N. Sci. Phila., 1X, 1857, p.170; *J1. Ac. N. Sci. Phila., IV, 1858, p. 94, pl. xx, fig. 745 *Obs., VI, 1858, p. 94, pl. xx, fig. 74.—B. H. WriGut, Check List, 1888. * Margaron ( Unio) naviculoides LEA, Syn., 1870, p. 60. Georgia. + UNIO SORDIDUS Lea. * Unio sordidus Lea, Tr. Am. Phil. Soc., X, 1852, p. 254, pl. x11, fig. 1; * Obs., V, 1852, p. 10, pl. x11, fig. 1.—* ConRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 1853, p. 257.— *H.and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 493.—* B. H. WRIGHT, Check List, 1888.—* P&TEL, Conch. Sam., III, 1890, p. 168. * Margaron (Unio) sordidus LEA, Syn., 1852, p. 33; 1870, p. 54. *+t Unio gibbesianus La, Tr. Am. Phil. Soc., X, 1852, p. 254, pl. xm, fig. 2; * Obs.,V, 1852, p. 10, pl. xu, fig. 2.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 250.— *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 493.—* B. H. Wrieut, Check List, 1888. * Margaron (Unio) gibbesianus Lra, Syn., 1852, p. 33; 1870, p. 54. Abbeville, South Carolina. +UNIO SPADICEUS Lea. “Unio spadiceus Lua, Pr. Ac. N. Sci. Phila., I, 1857, p.86; *J1. Ac. N. Sci. Phila., V, 1862, p. 55, pl.t, fig. 202; *Obs., VILI, 1862, pl. 1, fig. 201.—* B. H. Wriaut, Check List, 1888. *Margaron ( Unio) spadiceus LEA, Syn., 1870, p. 48. North Carolina. + UNIO STRIGOSUS Lea. “Unio strigosus LEA, Pr. Am. Phil. Soc., I, 1840, p. 287; *Tr. Am. Phil. Soc., VIII, 1843, p. 198, pl. 1x, fig. 9; *Obs., III, 1842, p.36 pl. rx, fig. 9.—* ConraD, Pr. Ac. N. Sei. Phila., VI, 1853, p. 258.—* H. and A. Apams, Gen. Rec. Moll., IT., 1857.—* CHENU, Ill. Conch., 1858, pl. xxx, figs. 6, 6a, 6b.—* B. H. WRIGHT, Check List, 1888. *Margaron (Unio) strigosus LEA, Syn., 1852, p. 36; 1870, p. 57. Southwest Georgia; southeast Alabama. +UNIO LAZARUS Lea. *Unio lazarus Lea, Pr. Am. Phil. Soc., V, 1852, p. 251; *Tr. Am. Phil. Soc., XI, 1852, p. 259, pl. xiv, fig. 9; *Obs., V, 1852, p. 15, pl. x1v, fig. 9.—* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 251.—* H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 491.—* B. H. Wriaut, Check List, 1888.—PaTEL, Conch. Sam., III, 1890, p. 157. *Margaron (Unio) lazarus LEA, Syn., 1852, p. 39; 1870, p. 62. Abbeville district, South Carolina. (Group of Unio downiet.) Shell subtrapezoidal, inflated, solid, truncate and more or less trian- gular behind, sometimes swollen in the postbasal region, with a well- 1A peculiarly compressed, arcuate form. Some specimens of U. arctatus approach it closely. No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 733 developed posterior ridge; beaks full, their sculpture not observed; epidermis smooth and shining in the young shell, becoming duller and roughened when old; hinge moderately strong; pseudocardinals radial, roughened; laterals heavy, somewhat remote, curved; there is a more or less developed secondary lateral in the right valve; dorsal scars few, in a row just behind the pseudocardinals and fully exhibited on the inner edge of the shallow beak cavity; nacre dull; muscle scars distinct, smooth. Animal with the marsupium occupying the whole of the outer gills; inner gills free from the abdominal sac a part of their length; palpi rather small; mantle line thick on the border. + UNIO DOWNIEI Lea. Tio downiet Lua, Pr. Ac. Nat. Sci. Phila., I, 1858, p. 166; Jl. Ac. Nat. Sci. Phila., TY; 1859; p. 210, pl. xxv, fig. 915 Obs., VII, 1859, p. 28, pl: xxv, fig. 91.— *SoweERBY, Conch. Icon., XVI, 1868, pl. Lxvii, fig. 350.—* B. H. Wrieut, Check List, 1888.—* PaTEL, Conch. Sam., IIT, 1890, p.151.—* Srmpson, Pr. 7 U. 8. Nat. Mus., XV, 1892, p. 413, pl. Lv, figs. 1-3; Lv1, fig. 5. * Margaron (Unio) downiet LEA, Syn., 1870, p. 41. Southern Georgia; north Florida. +UNIO GEMINUS Lea. * Unio geminus LEA, Pr. Ac. Nat. Sci. Phila., VIII, 1856, p- 262; *Jl. Ac. Nat. Sci. Phila., 1858, p. 63, pl. X, fig. 45; * Obs., VI, 1858, p. 63, pl. x, fig. 45.—* B. H. WriGuHt, Check List, 1888. * Margaron (Unio) geminus LEA, Syn., 1870, p. 41. *t Unio satillaensis Lea, Pr. Ac. Nat. Sci. Phila., II, 1858, p. 166; * Jl. Ac. Nat. Sci. Phila., IV, 1859, p. 216, pl. xxvu, fig. 96; Obs., VII, 1859, p. 34, pl. xxvu, fig. 96.—* B. H. Wriaut, Check List, 1888. *Margaron ( Unio) satillaensis Lea, Syn., 1870, p. 41. Georgia. +UNIO LECONTIANUS Lea. *Margarita (Unio) lecontianus LEA, Syn., 1836, p. 23; 1838, p. 18. *Unio lecontianus Lea, Tr. Am. Phil. Soc., VI, 1838, p. 40, pl. xu, fig. 85; *Obs., II, 1838, fig. 40, pl. x11, fig. 35.—* TRoscHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 236.—* HaNnLEY, Test. Moll., 1842, p.188; *Biv. Shells, 1843, p. 188, pl. Xxil, figs. 11,51.—* CaTLow and REEVE, Conch. Nom., 1845, p. 60.—* ConrRaAD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 251.—*CuHENUu, Ill. Conch., 1858, pl. XXIV, figs. 6, 6a, 6b.—* H. and A. ADAmMs, Gen. Rec. Moll., II, 1857, p. 494.— “SowrrBy, Conch. Icon., XVI, 1866, pl. xxx, fig. 173.—* B. H. Wricut, Check List, 1888.—* PasTEL, Conch. Sam., III, 1890, p. 157. *Margaron (Unio) lecontianus Lea, Syn., 1852, p. 26; 1870, p. 41. “Unio contrarius CONRAD, Pr. Ac. Nat. Sci. Phila., 1V, 1849, p.153; * Ann. and Mag., IV, 1849, p.301; * Ji. Ac. Nat. Sci. Phila., 1850, p. 276, pl. XXXVI, fig. 7; *Pr. Ac. N. Sei. Phila., VI, 1853, p. 247. Georgia. Cae PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. +UNIO SPISSUS Lea, *Unio spissus LA, Pr. Ac. Nat. Sci. Phila., III, 1859, p.112; *Jl. Ac. Nat. Sci. Phila., 1V, 1859, p. 208, pl. xxv, fig. 89; *Obs., VII, 1859, p. 26, pl. xxv, fig. 89.— * SowERBY, Conch. Icon., XVI, 1868, pl. Lxxxvitl, fig. 476.—* B. H. WRIGHT, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890. p. 168. *Margaron (Unio) spissus Lma, Syn., 1870, p. 41. Georgia. (Group of Unio fisherianus.) Shell elongated, rather thin, subeompressed, pointed behind and sometimes slightly biangulate; posterior ridge generally well developed; beaks low, the sculpture consisting of a few coarse, slightly irregular ridges which run nearly parallel with the growth lines, generally heavier where they cross the posterior ridge; epidermis sometimes rayed, shining; pseudocardinals usually compressed; laterals long, straight, and lamellar; beak cavities very shallow and containing two or three dorsal scars at some distance behind the beaks; muscle scars well marked, the posterior ones elongated; nacre generally dull. Ani- mal with the gills greatly elongated, inner the larger, more or less free from the abdominal sac; marsupium occupying nearly or quite the whole leneth of the outer branchie; palpi elongated; mantle thin, thicker on the edge. tUNIO LANCEOLATUS Lea. *Unio lanceolatus La, Tr. Am. Phil. Soc., 1828, p. 266, pl. 101, fig. 2; *Obs., I, 1834, p. 8, pl. m1, fig. 2.—* Conrap, New F. W. Shells, 1834, p. 70.—* FERUSSAC, Guer. Mag., 1835, p. 26.—* CONRAD, Monog. III, 1836, p. 32, pl. x1v., fig. 2.— * HANLEY, Test. Moll., 1842, p. 204; * Biv. Shells., 1843, p. 204, pl. xx, fig. 60; XXU, fig. 26.—* CaTLow and REEVE, Conch. Nom., 1845, p.60.—* ConraD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 251.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 491.—* CHENU, Ill., Conch. 1858, pl. vu, fig. 1, la, 1b.—* KusTEr, Conch. Cab. Unio., 1861, p. 204, pl. Lx viul, fig. 4.—* SowERBY, Conch. Icon., XVI, 1866, pl. xLiu1, fig. 236.—* B. H. WricutT, Check List, 1888.—* PTE, Conch. Sam., III, 1890, p. 156. ; * Margarita (Unio) lanceolatus LEA, Syn., 1886, p. 35; 1838, p. 24. *Margaron (Unio) lanceolatus Lea, Syn., 1852, p. 36; 1870, p.57. *Unio lanceolata DESHAYES, Enc. Méth., II, 1830, p.585; ~An.sans Vert., 2d ed., VI, 1835, p. 547; 3d ed., II, 1889, p. 672. North Carolina; Virginia. + UNIO VIRIDULUS Lea.! *Unio viridulus Lea, Pr. Ac. Nat. Sci. Phila., VII, 1863, p. 193; * Jl. Ac. Nat. Sei. Phila., Vi, 1866, p.10, pl. 111, fig. 17; * Obs., XI, 1867, p. 14, pl. 1, fig. 17.— *B. H. WrieutT, Check List, 1888. * Margaron (Unio) viridulus Lea, Syn., 1870, p. 58. Neuse River, near Raleigh, North Carolina. 1A young shell, no doubt, which in texture and appearance is much like U. lanceo- latus, but is bright green and not so pointed behind. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 735 + UNIO PRODUCTUS Conrad.! Unio productus CONRAD, Monog., III, 1836, p. 31, pl. xtv, fig. 1.—* Haney, Test. Moll., 1842, p. 205; * Biv. Shells, 1843, p. 205, pl]. xxui1, fig. 17.—* CaTLow and REEVE, Conch. Nom., 1845, p. 63.—* KusTER, Conch. Cab. Unio, 1852, p. 66, pl. xv1, fig. 2.—* ConraD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 255.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 491.—* B. H. Wricut, Check List, 1888.—* PTEL, Conch Sam., III, 1890, p. 164. * Margarita (Unio) productus LEA, Syn., 1836, p. 37; 1838, p. 24. * Margaron (Unio) productus, Lea, Syn., 1852, p. 37; 1870, p. 60. * Unio barrotti KUSTER, Conch. Cab. Unio, 1861, p. 189, pl. Lrx, fig. 6. North Carolina; Virginia; Maryland. +UNIO NASUTULUS Lea. (Emend.) * Unio nasutilus 2 Lea, Pr. Ac. N. Sci. Phila., VII, 1863, p. 192. * Unio nasutulus Lea, Jl. Ac. N. Sci. Phila., VI, 1866, p. 12, pl. 11, fig.9; *Obs., XI, 1867, p. 16, pl. 111, fig. 9.—* B. H. Wricut, Check List, 1888. * Margaron (Unio) nasutulus LEA, Syn., 1870, p. 60.° Livingston’s Creek, Brunswick County, North Carolina. + UNIO FISHERIANUS Lea. *Unio fisherianus LEA, Tr. Am. Phil. Soc., VI, 1838, p. 8, pl. Iv, fig. 8; * Obs., IT, 1838, p. 8, pl.iv, fig. 8.—* TrROscHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 234.—* HANLEY, Test. Moll., 1842, p. 206; ~ Biv. Shells, 1843, p. 206, pl. xxu1, fig. 52.—* CaATLOwW and REEVE, Conch. Nom., 1845, p. 59.—* ConrRaD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 249.—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p.491.—* CHENU, Ill. Conch., 1858, pl. xx, figs. 4, 4a, 4b.—* KusTER, Conch. Cab. Unio., 1&61, p. 205, pl. Lxvitl, fig. 6.—* REEVE, Conch. Icon., XVI, 1865, pl. xxiv, fig. 118.—* Hartman and MICHENER, Conch. Cest., 1874, p. 90, fig. 187.—* B. H. Wriaut, Check List, 1888.—* P@ TEL, Conch. Sam., ILI, 1890, p. 152. * Margarita (Unio) fisherianus LEA, Syn., 1836, p. 37; 1838, p. 24. * Margaron (Unio) fisherianus LEA, Syn., 1852, p. 37; 1870, p. 60. *Unio nasutus CONRAD (part),! Monog., II, 1858, pl. xvii, fig. 1. Virginia; Maryland; Pennsylvania, in the Atlantic drainage. t UNIO EMMONSII Lea. * Unio emmonsit LEA, Pr. Ac. N. Sci. Phila., [X, 1857, p.86; * J]. Ac. N. Sci. Phila., V, 1862, p.56, pl. 1, fig. 203; * Obs., VIII, 1862, p.60, pl.1, fig. 203.—* B. H. WriGHT, Check List, 1888. * Margaron (Unio) emmonsii LEA, Syn., 1870, p. 60. North Carolina. 1T have seen a large number of specimens of what I suppose is this, none of which exactly agree with Conrad’s figure and description, but which I can not refer to any- thing else. 2So written; no doubt a typographical error. ’ Probably only a variety of U. productus Conrad. 4Conrad’s first two figures (under fig.1) are certainly U. fisherianus, the third is a female nasutus. 736 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. +UNIO DISPALANS B. H. Wright. * Unio dispalans B. H. Wrieut, Nautilus, 1899, p. 50. +t UNIO SUBINFLATUS Conrad. * Unio subinflatus CONRAD, Monog., XI, 1838, p. 97, pl. Liv, fig.1; * Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.—* B. H.Wrient, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 168. * Margaron (Unio) subinflatus LEA, Syn., 1870, p.52. South Georgia; Florida. t UNIO AHENEUS Lea. * Unio aheneus LEA, Dese. 12 Uniones, 1843 (no paging); * Tr. Am. Phil. Soc., IX, 1846, p. 280, pl. x11, fig.9; * Obs., 1V, 1848, p. 38, pl. xu, fig.9.—* H. and A. ApaAms, Gen. Rec. Moll., II, 1857, p. 491.—* SowERBy, Conch. Icon., XVI, 1866, pl. xxxvI, fig. 194.—* B. H. Wrigut, Check List, 1888.—* P&TEL, Conch. Sam., III, 1890, p. 144.—* Simpson, Pr. U.S. Nat. Mus., XV, 1892, p. 431, pl. LXxu, fig. 6. é * Margaron (Unio) aheneus LEA, Syn., 1852, p. 37; 1870, p. 60. Florida. + UNIO WALTONI B. H. Wright. * Unio waltont B. H.WriGHt, Pr. Ac. N. Sci. Phila., 1888, p. 114, pl. 11, fig. 3; * Check List, 1888.—* Srmpson, Pr. U.S. Nat. Mus., XV, 1892, p. 431, pl. LX XIII, fig. 7. Florida. }UNIO ATTENUATUS Lea. *Unio attenuatus Lea, Pr. Ac. N. Sei. Phila., II, 1872, p. 157; *J1. Ac. N. Sci. Phila., VIII, 1874, p.41, pl. xiv, fig. 88; *Obs., XIII, 1874, p. 45, pl. xiv, fig. 38.— .*B.H. Wrieut, Check List, 1888. Georgia. + UNIO ROSTRZEFORMIS Lea. * Unio rostreformis LEA, Pr. Ac. N. Sci. Phila., VILI, 1856, p. 262. *Unio rostriformis LBA, JI. Ac. N. Sci. Phila., [V, 1858, p.64, pl. x, fig.46; * Obs., VI,1858, p. 64, pl. x, fig. 46.—* B. H. Wricut, Check List, 1888. * Margaron (Unio) rostriformis LEA, Syn., 1870, p. 60. *+Unio maconensis Lua, Pr. Ac. N.Sci. Phila., VIII, 1857, p.172; “Jl. Ac. N. Sei. Phila., TV, 1858, p. 93, pl. xx, fig. 73; Obs., VI, 1858, p. 93, pl. xx, fig. 73.— *B. H. WricutT, Check List, 1888. * Margaron (Unio) maconensis LEA, Syn., 1870, p. 60. Georgia. UNIO DUTTONIANUS Lea. *Unio duttonianus La, Pr. Ac. N. Sci. Phila., TI, 1841, p.31; * Ji. Ac. N. Sci. Phila., VIII, 1842, p. 236, pl. xxi, fig.50; *Obs., III, 1842, p.74, pl. xxu, fig. 50.— *ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 248.—* H. and A. ApAms, Gen. Rec. Moll., If, 1857, p. 491.—* Cuenu, I. Conch., 1858, pl. xxxuJ, figs. 4, 4a, 4b.—SOwERBY, Conch. Icon., XVI, 1868, pl. xc1, fig. 492.—* B. H. WRIGHT, Check List, 1888. * Margaron (Unio) duttonianus LEA, Syn., 1852, p. 35; 1870, p. 57. * Unio duttonianus PATEL, C. Sam., III, 1890, p. 151. Ogeechee Canal, Savannah, Georgia. NO. 1205. SYNOPSIS OF THE NAITADES—SIMPSON. 737 + UNIO FOLLICULATUS Lea. *Unio folliculatus LEA, Tr. Am. Phil. Soc., VI, 1858, p. 38, pl. x1, fig. 33; * Obs., IJ, 1838, p. 33, pl. x1, fig. 33.—* TROSCHEL, Arch. fiir Nat., V, 1839, Pt. 2, p. 236.—* HANLEY, Test. Moll., 1842, p. 204; * Biv. Shells, 1843, p. 204, pl. xxu, fig. 55.—* CaTLOW and REEVE, Conch. Nom., 1845, p.59.—* Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 249.—* H. and A. ADams, Gen. Ree. Moll., IT, 1857, p. 491.—* CHENU, II]. Conch., 1858, pl. x x111, figs. 4, 4a, 4b.—* KusTER, Conch. Cab. Unio, 1861, p. 202, pl. Lxvu, fig. 4.—* SOwERByY, Conch. Icon., XVI, 1868, pl. xc, fig. 493.—* B. H. Wr1eGHT, Check List, 1888.—* PasTEL, Conch. Sam., III, 1890, p. 153. * Margarita ( Unio) folliculatus LEA, Syn., 1836, p. 34; 1838, p. 23. * Margaron (Unio) folliculatus LEA, Syn., 1852, p.35; 1870, p.57. *+Unio exacutus La, Pr. Ac. N. Sci. Phila., II, 1872, p. 159; * Jl. Ac. N. Sci. Phila., VIII, 1874, p. 45, pl. xv, fig.43; *Obs., XIII, 1874, p.49, pl. xv, fig. 49.— *B.H. Wrieat, Check List, 1888. *+ Unio rostellum Luna, Pr. Ac. N. Sci. Phila., II, 1872, p.160; * Jl. Ac. N. Sci. Phila., VIII, 1874, p. 44, pl. xv, fig. 41; *Obs., XIII, 1874, p. 48, pl. xv, fig. 41.— ~B. H. Wrieut, Check List, 1888. Georgia. +UNIO SHEPARDIANUS Lea. * Unio shepardianus Lea, Tr. Am. Phil. Soc., V, 1834, p. 95, pl. x111, fig. 38; *Obs., I, 1834, p. 207, pl. x11, fig. 388. —* CONRAD, Monog., VIII, 1837, p. 70, pl. xxx1x.— *PERUSSAC, Guer. Mag., 1835, p. 29.—* HANLEY, Test. Moll., 1842, p. 203; .* Biv. Shells, 1843, p. 203, pl. xxii, fig. 25.—* KusrEer, Conch. Cab. Unio, 1852, p. 65, pl. xvi, fig. 1.—* ConraD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 257.— *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 491.—* ?CHENU, Man., 1859, II, p. 139, fig. 647.—* REEVE, Conch. Icon., XVI, 1865, pl. xIx, fig. 90.—* B. H. Wriaut, Check List, 1888.—* PTE, Conch. Sam., III, 1890, p. 167. * Margarita (Unio) shepardianus LEA, Syn., 1836, p. 34; 1838, p. 23. * Margaron (Unio) shepardianus La, Syn., 1852, p.35; 1870, p. 57. * Unio sheppardianus CATLOW and REEVE, Conch. Nom., 1845, p. 64. Altamaha River, Georgia. (Group of Unio popeii.) Shell elongated, narrowed in front, and biangulate behind, with the base slightly sinuate, feebly sulcate; beaks not prominent, sculptured with rather fine, somewhat broken, often faint ridges, which have a ten- dency to fall into two rounded loops; psSeudocardinals compressed, high, sharp, ragged; laterals long, slightly curved; cavity of the beaks shal- low; cicatrices not deep. The shell is only a little thickened in front, and that of the female is slightly swollen at the posterior base. Animal with the marsupium occupying the whole length of the outer gills; ovisacs not separated by a sulcus; gills long, inner a little the larger throughout, generaily free their whole length from the abdominal sac; palpi enormous, wide, oval, slightly pointed behind, united two- thirds of their length to the mantle; mantle double on its edge; bran- chial opening large. Proc. N. M. vol. xxii——47 738 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. 13 + UNIO POPEII Lea. * Unio popeit Lea, Pr. Ac. N. Sci. Phila., IX, 1857, p. 102; *Jl. Ac. N. Sci. Phila., IV, 1858, p. 372, pl. LXv1, fig. 197; * Obs., VIII, 1860, p. 54, pl. Lxv1, fig. 197. * Unio popei SOWERBY, Conch. Icon., XVI, 1868, pl. Lxxx1, fig. 430.—*B. H. Wricut, Check List, 1888.—*PaTEL, Conch. Sam., III, 1890, p. 164.— * FISCHER and CRoSssE, Miss. Sci., Pt. 7, II, 1894, p. 605. * Margaron (Unio) popett LEA, Syn., 1870, p. 57. South Texas; northeast Mexico. tUNIO POEYANUS Lea. * Unio poeyanus LEA, Pr. Ac. N. Sci. Phila., IX, 1857, p. 85; *Obs., VI, 1857, p. 35, pl. xxxul, fig. 30; * Jl. Ac. N. Sci. Phila., III, 1858, p. 315, pl. xxx, fig. 30.— *SowERBy, Conch. Icon., XVI, 1868, pl. xc, fig. 486.—* B. H. WRIGHT, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 164.—* FiscHER and CrossB, Miss. Sci., Pt. 7, II, 1894, p. 606. * Margaron ( Unio) poeyanus LEA, Syn., 1870, p. 57. Rio de las Balsas, near Coyucan, Mexico. UNIO VER-PACIS Tristram. * Unio vere-pacis TRISTRAM, Proc. Zool. Soc. Lond., 1863, Pt. 3, p. 414..—* B. H. WriGHt, Check List, 1888.—*PaTEL, Conch. Sam., III, 1890, p. 171.— * FISCHER and CROSSE, Miss. Sci., Pt. 7, II, 1894, p. 620. Guatemala, Department of Vera Paz. Section CANTHYRIA Swainson, 1840. Shell inflated, suboval, spinose, with a high, rather sharp posterior ridge, above which it is somewhat truncated, the posterior slope being sometimes slightly wrinkled; beaks rather compressed, the sculpture not seen; epidermis smooth and shining, variegated with angular blotches; hinge sharply curved at the center; pseudocardinals rather compressed ; laterals short, remote, the hinge plate narrowed; beak cavi- ties rather deep. Animal with the marsupium occupying the whole of the outer gills, forming a smooth pad; branchiz very large, round below, inner the larger, free nearly their whole length from the abdominal sac; palpi large; mantle double on its edge, sometimes with a few papille in front of the branchial opening; branchial opening small; superanal opening colored inside.’ t Unio spinosus LEA, Desc. of New Sp. Unio, 1836, colored figs. ; * Tr. Am. Phil. Soc., VI, 1838, p. 57, pl. xvi, fig. 50; *Obs., II, 1838, p. 57, pl. xvi, fig. 50.—* Jay, Cat., 1839, p. 113, pl. v, figs. 1, 2.—* TRoscHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 236.—* HANLEY, Test. Moll., 1842, p. 182; * Biv. Shells, 1843, p. 182, pl. 1Only a Latin description was given by Tristram, and the species is not identifi- able. It is probably close to U. popeii, and may possibly be that. 2 Notwithstanding the remarkable character of well-developed spines on the only species of this group, U. spinosus, the animal even when gravid does not present any striking peculiarities, and is certainly a Unio. I have seen one or two specimens of the spinosus with only one spine on one valve and none on the other, and one in the Lea collection without spines. : NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 739 Xx1u, fig.56.—* CaTLow and REEVE, Conch. Nom., 1845, p. 64.—*Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 257.—* KusTER, Conch. Cab. Unio, 1856, p. 167, pl. XLIx, fig. 1.—*CHENU, Ill. Conch., 1858, pl. x xu, figs. 6, 6a, 6b.— *SoweErRBy, Conch. Icon., XVI, 1866, pl. xix, fig. 261.—*B. H. Wricurt, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 168. *Margarita (Unio) spinosus LEA, Syn., 1836, p. 17, colored plate; 1838, p. 16. *Margaron (Unio) spinosus LEA, Syn., 1852, p. 23; 1870, p. 35. “Canthyria spinosa SwAINSON, Tr. on Mal., 1840, pp. 276, 378.—*AGassiz, Arch, fiir Nat., I, 1852, p. 44. * Unio spinosa GoopRicH, Ill. Nat. Hist., II, 1859, p. 523, fig. Altamaha River, Georgia. Section UNIOMERUS Conrad, 1853, (Type, Unio tetralasmus Say.) Shell trapezoid, with a rounded posterior ridge, and pointed or feebly biangulate behind; beaks not prominent, sculptured with 10 to 15 curved, rather strong, concentric ridges, which sweep decidedly upward behind, where they are drawn somewhat closely together; epidermis generally rayless, often clothlike; pseudocardinals usually compressed ; laterals delicate, slightly curved; muscle scars large, shallow, nacre generally lurid. Animal with the marsupium occupying the whole length of the outer branchie, pad-like; gills large, inner the larger, free nearly or quite the length of the abdominal sac; mantle generally rather thick, thicker and double on the edge. tUNIO TETRALASMUS Say. * Unio tetralasmus Say, Am. Conch., III, 1830, pl. xx111.!—* FERusSAC, Guer. Mag., 1835, p. 26.—* DEsHAYES, An. sans. Vert., 2d ed., VI, 1835, p. 555; 3d ed., II, 1839, p. 674.—*HANLEY, Test. Moll., 1842, p. 198; * Biv. Shells, 1843, p. 198, pl. xx, fig. 49.—* CaTLow and REEVE, Conch. Nom., 1845, p. 64.—* CHENU, Bib. Conch., 1st ser., III, 1845, p. 52, pl. x, figs. 1-3.— *ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.—* H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 493.—* B. H. Wrieut, Check List, 1888.—* PaTE., Conch. Sam., III, 1890, p. 169. ——_ 1An abundant, widespread, and very variable species, and if there were no con- necting links it would be easy to make a half dozen species out of it. The first described is the Unio tetralasmus Say, an elongated, rather smooth, more or less shin- ing form, of which excultus, jamesianus, parallelus, subcroceus, and symmetricus seem to besynonymous, varying a little in form, color, and smoothness. The variety camp- todon of Say is quite rhomboid, and is a rather rough, dark shell, and U. symmetricus is practically synonymous. Variety declivis is peculiarly drawn out at the post basal point. Variety manubius is a large, rather smooth form, rounded on the basal line. All these are Southern and Southwestern forms. Variety sayi is a yellowish shell, with very distinct rest marks, and has a more northern distribution than the rest, but it absolutely blends into them. Ward sent a description of his U. sayi to Tappan, who published it in the American Journal of Science and Arts under date of 1839. In Part XI of the Monography, dated November, 1838, Conrad describes Unio sayanus (changed to sayi in his notes) and refers it to Ward in the American Journal of Science and Arts of 1839. There is some mistake in these dates. In giving the synonymy it is hard to tell in all cases just what authors have meant. 740 PROCEEDINGS OF THE NATIONAL MUSEUM. vou. xu. - * Margarita (Unio) tetralasmus LEA, Syn., 1836, p. 30; 1838, p. 21. ~ *Margarcn (Unio) tetralasmus LEA, Syn., 1852, p. 32; 1870, p. 50. *OUnio excultus CONRAD, Monog., XI, 1838, p. 99, pl. Liv, fig. 1; Pr. Ac. N. Sci. Phila., VI, 1853, p. 249.—* P#TEL, Conch. Sam., III, 1890, p. 152. *tUnio parallelus CONRAD, Pr. Ac. N. Sci. Phila., I, 1841, p. 20; * Jl. Ac. Phila., VIII, 1842, p. 179.! *t+tUnio symmetricus Lea, Pr. Am. Phil. Soc., IV, 1845, p. 164; *Tr. Am. Phil. Soc., X, 18538, p. 73, pl.1v, fig. 11; *Obs., IV, 1848, p. 47, pl. rv, fig. 11.—*Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 493.—* B. H. WrieHT, Check List, 1888.—* PaTEL, Conch. Sam., ITI, 1890, p. 169. *Margaron (Unio) symmetricus LEA, Syn., 1852, p. 32; 1870, p.52. *+ Unio porrectus CONRAD, J1. Ac. N. Sci. Phila., 1854, p. 296, pl. xx v1, fig. 7.—* B. H. WriGut, Check List, 1888. *+ Unio subcroceus CONRAD, Jl. Ac. N. Sci. Phila., VII, 1854, p. 297, pl. xx vil, fig. 1. *Unio jamesianus LEA, Pr. Ac. N. Sci. Phila., I, 1857, p. 84; *J1. Ac. N. Sci. Phila., IV, 1X58, p. 53, pl. vi, fig. 35; *Obs., VI, 1858, p. 52, pl. vi, fig. 35.—* B. H. Wricut, Check List, 1888. Margaron (Unio) jamesianus La, Syn., 1870, p. 50. +UNIO TETRALASMUS var. CAMPTODON Say. * Unio camptodon Say, Am. Conch., V, 1832, pl. x111.—* CONRAD, New F. W. Shells, 1834, p. 68.—* FERuUSsAC, Guer. Mag., 1835, p. 26.—* HANLEY, Test. Moll., 1842, p. 198; * Biv. Shells, 1843, p. 198, pl. xx1, fig. 17.—* CuENU, Bib. Conch., ist ser., III, 1845, p. 53, pl. xiv, figs. 2, 2a, 2b.—*CarLow and REEVR, Conch. Nom., 1845, p. 56.—* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 246.— *H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 492.—*SowrErBy, Conch. Icon., XVI, 1868, pl. Lxx, fig. 356.—*B. H. WriauT, Check List, 1888.— *PmTEL, Conch. Sam., III, 1890, p. 147.—*StTEarns, Pr. U.S. Nat. Mus., XIV, 1891, p. 105. * Margarita (Unio) camptodon LEA, Syn., 1836, p. 30; 1838, p. 21. * Margaron (Unio) camptodon Lua, Syn., 1852, p. 32; 1870, p. 50. *+ Unio geometricus Lea, Tr. Am. Phil. Soc., V, 1832, p. 38, pl. rv, fig. 10; * Obs., J, 1834, p. 150, pl. rv, fig. 10. tUNIO TETRALASMUS var. MANUBIUS Gould. * Unio manubius GOULD, Pr. Bost. Soc. Nat. Hist., V, 1856, p. 229; *Otia Conch., 1862, p. 218.—* B. H. Wricut, Check List, 1888.—* FISCHER and CROSSE, Miss. Sci., Pt. 7, II, 1894, p. 592. * Margaron (Unio) manubius GOULD, Syn., 1870, p. 54. * Unio manubrius P&TEL, Conch. Sam., III, 1890, p. 158. +UNIO TETRALASMUS var. DECLIVIS Say. Unio declivis Say, Transylvania Jl. IV, 1831, p. 527; * Am. Conch., III, 1832, pl. Xxxxv.—* ConraD, New F. W. Shells, 1834, p. 68.—* FERUsSSACc, Guer. Mag., 1835, p. 26.—* DEsHAYES, An. sans. Vert., 2d ed., VI, 1835, p. 556; 3d ed., I, 1839, p. 675.—* HANLEY, Test. Moll., 1842, p. 200; * Biv. Shells, 1843, p. 200, pl. xxi, fig. 50.—* CHENU, Bib. Conch., Ist ser., III, 1845, p. 46, pl. x11, figs. 1, la, 1b.—* CaTLow and REEVE, Conch. Nom., 1845, p. 58.—* KuSTER, Conch. Cab. Unio, 1852, p. 60, pl. xiv, fig. 1—*ConraD, Pr. Ac. N. Sci. 1This name had been used by Sowerby for a fossil Unio, and Conrad subsequently changed it to porrectus on that account, but Sowerby had also used that name for a Unio. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 741 Phila., VI, 1853, p. 248.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 493.—" B. H. Wrieut, Check List, 1888.—* P&T TEL, Conch. Sam., III, 1890, p. 150. * Margarita (Unio) declivis LEA, Syn., 1836, p. 32; 1838, p. 22. * Margaron (Unio) declivis LEA, Syn., 1852, p. 33; 1870, p. 54. UNIO TETRALASMUS var. SAYI Ward. *Unio sayi WARD (in Tappan), Am. Jl. Sci., XXXV, 1839, p. 268, pl. 311, fig. 1.— * ConrAD, Monog., XI, 1838?, p. 102, pl. Lv, fig. 2..—* KusTER, Conch. Cab. Unio, 1861, p. 246, pl. Lxxx111, fig. 1.—* PaTEL, Conch. Sam., III, 1890, p. 166. * Unio sayanus B. H. WRIGHT, Check List, 1888. * Unio electrinus REEVE, Conch. Icon., XVI, 1865, pl. xxv, fig. 121.—* Paret, Conch. Sam., III, 1890, p. 151. Lower Mississippi drainage north to about latitude 40°; Ohio River system; Alabama River system and southwest through Texas into northern Mexico. Not reported, so far as I know, from the Tennessee and Cumberland rivers. tUNIO COLUMBENSIS Lea.? *Unio columbensis LEA, Pr. Ac. N. Sci. Phila., IX, 1857, p. 31; *J1. Ac. N. Sci. Phila., TV, 1858, p. 75, pl. x1v, fig. 55; *Obs., VI, 1858, p. 75, pl. x1v, fig. 55.— *B. H. Wricut, Check List, 1888. *Margaron (Unio) columbensis LEA, Syn., 1870, p. 50. * Unio columbiensis P& TEL, Conch. Sam., III, 1890, p. 148. Chattahoochee River, Georgia, west to Little Patsaliga Creek, Ala- bama. tUNIO OBESUS Lea. *? Unio carolinensis Bosc,’ Hist. Nat. de Coq., 1824, III, p. 139, pl. xxi, fig. 2.— *FERUSSAC, Guer. Mag., 1835, p. 26 —* CHENU, Ill. Conch., 1843, pl. xvi, fig. 4.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 246. *t+Unio obesus Les, Tr. Am. Phil. Soc., IV, 1831, p. 96, pl. x11, fig. 26; * Obs., I, 1834, p. 106, pl. x11, fig. 26.—* ConraD, N. F. W. Shells, 1834, p. 70.—* Han- LEY, Test. Moll., 1842, p. 198; * Biv. Shells, 1843, p. 198, pl. xxu1, fig. 34.— *CATLOW and REEVE, Conch. Nom., 1845, p. 61.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 492.—* CHENU, II]. Conch., 1858, pl. xviil, figs. 4, 4a, 4b.— * KUSTER, Conch. Cab. Unio, 1861, p. 196, pl. Lx1tI, fig. 2.—* REEVE, Conch. Icon., XVI, 1864, pl. xvi, fig.84.—* ?SowERBy, Conch. Icon., XVI, 1866, pl. xxxvill, fig. 212.—* B. H. Wriaut, Check List, 1888.—* Pa#TEL, Conch. Sam., III, 1890, p. 161.—* Simpson, Pr. U. 8. Nat. Mus., XV, 1892, p. 428, pl. LXVIUl, fig. 6; Lxrx, figs. 1, 2,4; Lxx1, fig. 3. * Margarita (Unio) obesus LEA, Syn., 1836, p. 30; 1838, p. 21. * Margaron (Unio) obesus LEA, Syn., 1852, p. 32; 1870, p. 50. 1Unio sayanus on plate, U. sayi in note. *This species almost merges into obesus on the one hand and the southern forms of tetralasmus on the other. The distribution of obesus is eastern, that of tetralasmus western, while columbensis occupies a central position in streams of the Gulf drainage. *It is impossible to tell from the very poor figure what this is. Lea thinks it is Margaritana margaritifera, but Bose did not visit any region where that species is found, and the figure seems to show lateral teeth. It is quite probably U. obesus. I think Lea’s name had better be used. 742 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. * Unio declivis CONRAD, Monog., V, 1836, p. 45, pl. x x11, fig. 1. *+ Unio ineptus Lua, Tr. Am. Phil. Soc., X, 1852, p. 261, pl. xv, fig. 12; * Obs., V, 1852, p. 17, pl. xv, fig. 12.—* ConraD, Pr. Acad. N. Sci. Phila., VI, 1853, p. 250.—* H. and A. ApAms, Gen. Ree. Moll., II, 1857, p. 494.—* B. H. WRIGHT, Check List, 1888.—*PaTEL, Conch. Sam., III, 1890, p. 155. * Margaron (Unio) ineptus LEA, Syn., 1852, p. 31; 1870, p. 50. *+t Unio hebes Lea, Tr. Am. Phil. Soc., X, 1852, p. 267, pl. xvutt, fig. 21; *Obs., V, 1852, p. 23, pl. xvi, fig. 21.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 250.—*H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p.494.—* B. H. WRIGHT, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 154. * Margaron ( Unio) hebes LEA, Syn., 1852, p. 26; 1870, p. 51. *+ Unio rivularis CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 257.—* Conran, Jl. Ac. N. Sci. Phila., 1854, p. 296. *+ Unio cicur Lea, Pr. Ac. N. Sci. Phila., V, 1861, p. 39; *Jl. Ac. N. Sci. Phila., V, 1862, p. 93, pl. x11, fig. 241.—* Obs., VIII, 1862, p. 96, pl. x11, fig. 241.— B. H. Wriacut, Check List, 1888. * Margaron (Unio) cicur Lra, Syn., 1870, p. 52. * Unio squalidus Lua, (part) 1 Pr. Ac. N. Sci. Phila., XV, 1863, p. 192.—* Jl. Ac. N. Sci. Phila., VI, 1866, p. 22, pl. vu, fig. 20; *Obs., XI, 1867, p. 26, pl. v1, fig. 20.—* B. H. Wrieut, Check List, 1888. * Margaron (Unio) squalidus Lea, Syn., 1870, p. 51. * + Unio jewettii Lua, Pr. Ac. N. Sci. Phila., XI, 1867, p. 81; * Jl. Ac. N. Sci. Phila., VI, 1868, p. 276, pl. xxxvui, fig. 89; *Obs., XII, 1869, p. 36, pl. xxvul, fig. 89.— *B. H. Wricut, Check List, 1888. * Margaron (Unio) jewettii LEA, Syn., 1870, p. 51. *+Unio pawensis LEA,? Pr. Ac. N. Sci. Phila., XII, 1868, p. 161; *Jl. Ac. N. Sei Phila., VI, 1868,p. 302, pl. xiv, fig. 114; * Obs., XII, 1869, p. 62, pl. xLv, fig. 114.—* B. H. Wriaur, Check List, 1888. * Margaron (Unio) pawensis LEA, Syn., 1870, p. 51. *+Unio rivicolus CONRAD, Am. Jl. Conch., IV, 1868, p. 280, pl. xvu1, fig. 4.— *B. H. WricuHtT, Check List, 1888. *+UNIO OBESUS var. BLANDINGIANUS Lea. “Unio blandingianus Lea, Tr. Am. Phil. Soc., V, 1834, p. 101, pl. xv, fig. 445% * Obs., I, 1834, p. 213, pl. xv, fig. 44.—* Ferussac, Guer. Mag., 1835, p. 29.— * CONRAD, Monog., V, 1836, p. 46, pl. xx1H, fig. 2.—* HANLEy, Test. Moll., 1842, p- 200; * Biv. Shells, 1843, p. 200, pl. x x11, fig. 1.—* CaTLow and REEVE, Conch. Nom., 1845, p. 56.—* Kusrer, Conch. Cab. Unio, 1852, p. 36, pl. v1, fig. 2.— * ConrRAD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 245.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 492.—* SowERBy, Conch. Icon., XVI, 1866, pl. Xxxv, fig. 187.—* B. H. Wriaut, Check List, 1888.—* 8. H. WRIGHT, Conch. Ex., II, 1888, p. 95.—* Pare, Conch. Sam., III, 1890, p. 146. * Margarita (Unio) blandingianus Lua, Syn., 1836, p. 32; 1838, p. 22. * Margaron (Unio) blandingianus Lra, Syn., 1852, p. 33; 1870, p. 54. 1Under this name Dr. Lea has certainly described two species, a heavy quadrate, form biangulate behind, with purple nacre—a variety of complanatus—and another which is, no doubt, U. obesus, and is the shell figured. 2A rough, apparently diseased obesus. 3A decidedly trapezoidal form with cloth-like, dark epidermis, possibly worthy of a varietal name. The transition to the typical state is, however, very complete. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 743 *+tUNIO OBESUS var. PALUDICOLUS Gould. *Unio paludicolus GOULD, Pr. Bost. Soc. Nat. Hist., II, 1845, p. 53.—* GouLp, Otia. Conch., 1852, p. 197.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 493.—* B. H. Wrieut, Check List, 1888. * Margaron (Unio) paludicolus LEA, Syn., 1852, p. 33; 1870, p. 54. * Unio paludicolor CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 254.—* Parmy, Conch. Sam., III, 1890, p. 162. Southern Virginia southward in streams draining into the Atlantic, and throughout the peninsula of Florida. +UNIO BISSELLIANUS Lea. * Unio bissellianus Lea, Pr. Ac. N. Sci. Phila., XI, 1867, p. 81; *Jl. Ac. N. Sci. ahaa eee S Ss. Demraeits. Dl XeXexeVIE wo. IOs Obss, Xu 1869) pry.3i., pl. XXXVU, fig. 90.—* B. H. Wricut, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 146. * Margaron (Unio) bissellianus Lea, Syn., 1890, p. 50. Bissell’s Pond, Charlotte, North Carolina. t UNIO SUBLURIDUS Simpson. * Unio subluridus SIMPSON, Pr. U.S. Nat. Mus., XV, 1892, p. 432, pl. LX x1ul, figs. 3, 4. Orange Springs, Marion County, Florida. I can not be certain as to the relationship of this species, as the beaks are eroded in the only shells I have seen. Section MICRONATAS Simpson, 1900. (Type, Unio aratus Lea.) Shell small, oval, a little produced near the posterior base, with a moderate posterior ridge and pointed near the base behind; beaks rather prominent, the sculpture beidg apparently rather fine, irregu- larly concentric ridges, having a tendency to fall into two loops; the whole surface strongly and closely concentrically ridged; pseudocardi- nals compressed, high, slightly curved upward; laterals compressed, curved; beak cavities moderately deep; nacre whitish; anterior muscle scars deep, rough; posterior well marked. Animal with the marsupium pad-like, occupying all but the extreme posterior part of the outer gills; branchiz elongated, wider behind, inner the larger throughout, free from the abdominal sac or united to it;! palpi large, rounded behind; mantle with thickened border; anal opening crenulate. ‘In some specimens free throughout; in others entirely united. (44 PROCEEDINGS OF THE NATIONAL MUSEUM. Vor. XXII. +UNIO ARATUS Lea. * Unio aratus LEA, Disc. 12 Uniones, 1843; * Tr. Am. Phil. Soc., IX, 1845, p. 282, pl. XLU, fig. 12; *Obs., IV, 1848, p. 40, pl. xi, fig. 12.—* H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 493.— * SowERBY, Conch. Icon., XVI, 1868, pl. Lx1v, fig. 320.—* B. H. Wricut, Check List, 1888.—* PaTEeL, Conch. Sam., ILI, 1890, p. 144. * Margaron (Unio) aratus LEA, Syn., 1852, p. 28; 1870, p. 35. Central America. +UNIO GRANADENSIS Lea. * Unio granadensis LEA, Pr. Ac. N. Sci. Phila., XII, 1868, p. 95; *J1. Ac. N. Sei. Phila., VI, 1868, p. 293, pl. xu, fig. 103; *Obs., XII, 1869, p. 53, pl. xu, fig. 103.—* B. H. Wrieut, Check List, 1888. * Margaron ( Unio) granadensis LEA, Syn., 1870, p. 35. Lake Nicaragua. The following species are of Rafinesque, but I am utterly unable to make anything out of them: Unio dilatata, elliptica, fasciata, fragilis, levigata, nervosa, viridis, zonata, all in Monograph, 1820; also Unio bicolor, calendis, castaneus, chloris, diaphanus, fontinalis, fulvus, lasmabrachys, montanus, pallens, platiolus, rivularis, rimosus, teneltus, venus, all in Continuation of Monograph, 1831. Other indeterminate Unionide of Rafinesyue are: Amblema antrosa, costata, gibbosa, olivaria, rubra, torulosa; Lasmonos fragilis; Obovaria obovalis, pachostea; Obliquaria triangularis, attenuata, atroviolacea, bullata, cliffordiana, cuprea, cyphia, ellipsaria, fasciolaris, flava, flexuosa, lateralis, lineolata, nodulata, obliquata, pusilla, quadrula, sintoxia, sin- uata, subrotunda, all in Monograph, 1820. Bariosta diploderma, pon- derosus, vittatis; Epilobasma biloba; Toxolasma cinerescens, cyclips, flexus, in Continuation of Monograph, 1831. The following are also indeterminate and spurious Unios: Unio tahetianus CATLOW and REEVE, Conch. Nom., 1845, p. 64. Is probably U. taitianus Lea. Unio largillierti PH1LIpP1, Menke’s Zeits., 1847, p. 94. Unio musicus SPENGLER, Skriv. Nat. Selsk., II, 1793, p. 67. Unio radula Say, N. Harm. Diss., 1829, p. 323. Unio plombarius VILLA, Disp. Conch. Terr. Fluv., 1841, p. 62. Unio pequottianus LINSLEY, Am. Jl. Sci., 1845, p. 277. Unio iridescens CONRAD, Cov. of Monog. No. 11. Unio angusta LAMARCK, An. sans. Vert., VI, 1819, p. 80. Unio conus SPENGLER, Skriv. Nat. Selsk., 1792. Unio delphinus SPENGLER, Skriv. Nat. Selsk., 1793, p. 63. Unio doumeti LETOURNEUX and BOoURGNIGNAT, Prod. Mal. Tunis., p. 163. Unio distortus BEAN, Ann. and Mag., 1836, p. 376, fig. 53. Unio wher CONRAD, Am. JI. Conch., IT, p. 279. Mya obovata SOLANDER, Portland Cat., p. 100. NO. 1205. SYNOPSIS OF THE NAITADES—SIMPSON. 745 Genus PLEUROBEMA (Rafinesque, 1820) Agassiz. (Type, Unio clava Lamarck.') Pleurobema RAFINESQUE, Ann. Gen. Sci. Phys., Brux, 1820, p. 313. Shell solid, triangular to rhomboid, usually with a prominent umbonal region; beaks at or near the anterior end of the shell, incurved and pointed forward over a small but well developed lunule; beak sculpture _ coarse, consisting of a few irregular, often broken ridges, which curve upward posteriorly; posterior ridge present, but low and rounded; epidermis showing the rest periods plainly, tawny to olive, often orna- mented with rays which show a tendency to break into square spots; hinge rather strong, the plate generally narrow; pseudocardinals tri- angular, ragged; laterals reaching nearly or quite to the pseudocar- dinals, double in both valves, in the right valve the inner being smaller; muscle scars deep, the posterior rounded; cavity of the beaks shallow; nacre silvery; male and female shells essentially alike. Animal having the inner gills much the larger, rounded below, free from the abdominal sac for a part or all of their length; marsupium occupying the entire outer gills, the ovisacs in some cases seeming to be arranged in pairs; animal generally yellowish to salmon red, some- times more or less brown or blackish. (Group of Pleurobema clava.) Shell solid, triangular; beaks high, generally anterior; beak sculp- ture consisting of three or four broken, coarse, irregular ridges; epider- mis yellowish or tawny, marked with broken green rays which show a tendency to form square spots; pseudocardinals often somewhat length- ened and more or less parallel with the laterals. Animal having the inner gills the larger except at the extreme pos- terior end, free nearly or quite their whole length from the abdominal sac; marsupium occupying the entire outer gills; branchial opening rather large, with small papilla; anal opening with minute papille or erenulations. Animal dirty whitish to salmon. + PLEUROBEMA CLAVA Lamarck. *Unio clava LAMARCK, An. sans Vert., VI, 1819, p. 74.—* DEsHaAyEs, An. sans Vert., 2ded., VI, 1835, p. 537; 3ded., II, 1839, p. 669.—* ConraD, Monog., I, 1835, p.5, pl. 11, fig. 1.—* FERussac, Guer. Mag., 1835, p. 28.—* ConraD, Pr. Ac. 'T regret that I have not been able to examine more of the animals of this group, especially those of the gravid females. The shells on the one hand approach very close to those of Quadrula in appearance, and to Unio on the other hand. But all of them have shallow beak cavities, while those of Quadrula are deep, and the embryos of Pleurobema are contained in the outer gills only. The shells are generally more solid and more triangular than those of Unio, and the pattern of coloring is different from that of either genus. It stands between the two genera. I place Unio wsopus and varicosus in Pleurobema with some hesitation, though in a specimen of the former containing comparatively few embryos there were none in the inner gills, and their beak cavities are shallow. 746 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. N. Sci. Phila., VI, 1853, p. 246.—* KusrER, Conch. Cab. Unio, 1852, p. 39, pl. Vil, fig. 2.—* SOWERBY, Conch. Icon., XVI, 1868, pl. LXIx, fig. 354. * Pleurobema clava AGassiz, Arch. fiir Naturg., I, 1852, p. 49. * Unio clavus REEVE, Conch. Syst., I, 1841, p. 117, pl. Lxxxvuil, fig. 3.—* HaNn- LEY, Test. Moll., 1842, p. 187; * Biv. Shells, 1843, p. 187, pl. xx, fig. 52.—*CatT- Low and REEVE, Conch. Nom., 1845, p. 57.—* H.and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 495.—* B. H. Wricut, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 148.—*Cau, Tr. Acad. Sci. St. Louis, VII, 1895, p. 9. pli. * Margarita (Unio) clavus LEA, Syn., 1836, p. 22; 1838, p. 18. * Margaron (Unio) clavus Lea, Syn., 1852, p. 26; 1870, p. 40. *tUnio patulus LEA,' Tr. Am. Phil. Soc., III, 1829, p. 44, pl. xu, fig. 20; * Obs., I, 1834, p. 55, pl. xu, fig. 20.—*ConrAD, Monog., X, 1838, p. 92, pl. L, fig. 2.— * HANLEY, Test. Moll., 1842, p. 187; *Biv. Shells, 1843, p. 187, pl. xxu1, fig. 27.—* CaTLow and REEVE, Conch. Nom., 1845, p. 62.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 495.—* CuENnu, Il]. Conch., 1858, pl. x v1, figs. 6, 6a, 6b.—* KusrEer, Conch. Cab. Unio, 1861, p. 259, pl. Lxxxvil, fig. 5.—* B. H. WricGur, Check List, 1888.—*PaTeL, Conch. Sam., III, 1890, p. 162. * Margarita (Unio) patulus LEA, Syn., 1836, p. 22; 1838, p. 18. * Margaron (Unio) patulus LEA, Syn., 1852, p. 26; 1870, p. 40. * Unio cuneatus Say, Am. Conch., VI, 1834.—* Frrussac, Guer. Mag., 1835, p. 28. Ohio, Cumberland, and Tennessee river systems. Reported from Iowa City, lowa; St. Peter’s River, Minnesota, and from Nebraska. + PLEUROBEMA MACULATA Conrad. * Unio maculatus CONRAD, New F. W. Shells, 1834, p. 30, pl. Iv, fig. 4, p. 70.— * FERUSSAC, Guer. Mag., 1835, p. 29. MOLLER, Syn. Nov. Gen., 1836, p. 202.— * HANLEY, Test. Moll., 1842, p. 203; * Biv. Shelis, 1843, p. 203.—* CaTLow and REEVE, Conch. Nom., 1845, p.60.—* CuENu, Bib. Conch., 1st ser., III, 1845. p.17, pl. 11, fig. 7.—* CONRAD, Pr. Ac. N. Sei., Phila., VI, 1853, p. 252.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 495.—* Kuster, Conch. Cab. Unio, 1861, p. 216, pl. Lxxu, fig. 2.—*B.H. Wrieut, Check List, 1888.—* Pa TEL, Conch. Sam., IIT, 1890, p. 158. * Margarita (Unio) maculatus La, Syn., 1836, p. 34; 1838, p. 23. * Margaron (Unio) maculatus LHa, Syn., 1852, p. 24; 1870, p. 38.2 Tennessee River system. t PLEUROBEMA HOLSTONENSIS Lea.? *Unio holstonensis Lea, Pr. Am. Phil. Soc., I, 1840, p. 288; *Tr. Am. Phil. Soc., VIII, 1842, p. 212, pl. xv, fig. 27; *Obs., III, 1842, p. 50, pl. xv, fig. 27.—*HANn- ‘No specimen in the Lea collection exactly agrees with the figure of this species and Lea gives no exact locality for the type; but from a careful study of his shells and the figure and description I am convinced that it is a somewhat compressed form of the very variable clava, which has rather low beaks, that are not placed as far for- ward as usual. There seems to be a complete set of intermediates. 2Dr. Lea is inclined to believe (see above citation) that Conrad’s Unio maculatus is the same as his own ravenelianus, and if this were the case Lea’s name should have precedence. From an examination of specimens in the Philadelphia Academy of Natural Sciences and Conrad’s figure and description, I am forced to differ from Dr. Lea, as I consider the species close to Lamarck’s clavus. 3 The type, a young shell, is certainly the same as Unio lawti, and there does not seem to be any material difference between it and the types of U. bellulus and mundus. The figure is hardly accurate. NO. 1205. SYNOPSIS OF THE NAITADES—SIMPSON. CASE LEY, Test. Moll., 1842, p. 213.—*ConraD, Pr. Ac. N. Sci., Phila., VI, 1853, p. 950.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 495.—*CuHENu, III. Conch., 1858, pl. xxxu1, figs. 1, la, 1b.—*KustTER, Conch. Cab. Unio, 1862, p- 287, pl. xcvi, fig. 4.—*B. H. Wrieut, Check List, 1888. *Margaron (Unio) holstonensis LEA, Syn., 1852, p. 25; 1870, p. 38. *Unio mundus LEA, Pr. Ac. N. Sci. Phila., I, 1857, p.83; *Jl. Ac. N. Sci. Phila., VI, 1866, p.40, pl. xiv, fig. 38; *Obs., XI, 1867, p. 44, pl. xiv, fig. 38.—*REEVE, Conch. Icon., XVI, 1864, pl. xvi, fig. 72..\—*B. H. Wricut, Check List, 1888.—*P TEL, Conch. Sam., III, 1890, p. 160. * Margaron (Unio) mundus LEA, Syn., 1870, p. 40. t* Unio lawi Lga, Pr. Ac. N. Sci. Phila., I, 1871, p. 189; *J1. Ac. N. Sci. Phila., VIII, 1874, p. 8, pl. u, fig. 45 *Obs., XIII, 1874, p. 12, pl. m1, fig. 4.—*B. H. WRIGHT, Check List, 1888. t* Unio pattinoides LEA, Pr. Ac. N. Sci. Phila., I, 1871, p. 193; *Jl. Ac. N. Sci. Phila., VIII, 1874, p. 16, pl.1v, fig. 12; *Obs., XIII, 1874, p. 20, pl. rv, fig. 12.— *B. H. WRIGHT, Check List, 1888. t * Unio bellulus Lea, Pr. Ac. N. Sci. Phila., II, 1872, p. 161; *J1. Ac. N. Sci. Phila., VIII, 1874, p. 50, pl. xvu, fig. 48; *Obs., XIII, 1874, p. 54, pl. xvi, fig. 48.—B. H. Wricut, Check List, 1888. Tennessee River system. +t PLEUROBEMA BOURNIANUS Lea. * Unio bournianus LEA, Pr. Am. Phil. Soc., I, 1840, p. 288; *Tr. Am. Phil. Soc., VIII, 1842, p. 213, pl. xv, fig. 28; *Obs., III, p. 51, pl. xv, fig. 28.—*Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 245.—*H. and A. Apams, Gen. Rec. Moll., IT, 1857, p. 495.—*CHENU, Ill. Coneh., 1858, pl. xxviul, figs. 2, 2a, 2b.—*B. H. Wricat, Check List, 1888.—*PaTEL, Conch. Sam., III, 1890, p. 146. * Maragron (Unio) bournianus LEA, Syn., 1852, p. 25; 1870, p. 39. Sciota River, near Chillicothe, Ohio. + PLEUROBEMA EDGARIANUS Lea. *Unio edgarianus Lea, Pr. Am. Phil. Soc., I, 1840, p. 288; *Tr. Am. Phil. Soc., VIII, 1842, p. 214, pl. xv, fig. 30; Obs., III, 1842, p. 52, pl. xv, fig. 30.—* Con- RAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 248.—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 495.—* CHENU, II]. Conch., 1858, pl. xxix, figs. 5, 5a, 5b.— * KUSTER, Conch. Cab., 1861, p. 213, pl. Lxx, fig. 5.—* Musa@Rave, Phot. Conch., 1863, pl. 11, fig. 6.—* REEvk, Conch. Icon., XVI, 1864, pl. xv, fig. 65.—* B. H.WriGcuT, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 151. * Margaron ( Unio) edgarianus LEA, Syn., 1852, p. 25; 1870, p. 39. t * Unio obuncus Luna, Pr. Ac. N. Sci., I, 1871, p. 192; *Jl. Ac. N. Sci., VIII, 1874, p. 9, pl. u, fig. 5; *Obs., XIII, 1874, p. 13, pl. u, fig. 5.—* B. H. Wrieut, Check List, 1888. + * Unio andersonensis Lra, Pr. Ac. N. Sci. Phila., II, 1872, p. 155; * Jl. Ac., N. Sci. Phila., VIII, 1874, p. 36, pl. xu, fig. 33; *Obs., XIII, 1874, p. 40, pl. x11, fig. 33.—* B. H. WRIGHT, Check List, 1888. Tennessee River system. 1In the errata Reeve says this is not mundus, but that it is nearer cuneolus and mooresianus. I have compared it with authentic specimens, and it is certainly nearer mundus than either of the other mentioned species. 748 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. +PLEUROBEMA CUNEOLUS Lea. * Unio cuneolus LEA, Pr. Am. Phil. Soc., I, 1840, p. 286; *Tr. Am. Phil. Soc., VIII, 1842, p. 193, pl. vu, fig. 3; *Obs., ITI, 1842, p. 31, pl. vu, fig. 3.—*“CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 247.—* H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 495.—*CuHENU, I]. Conch., 1858, pl. xxx, figs. 2, 2a, 2b.—* KUSTER, Conch. Cab. Unio, 1861, p. 182, pl. Lx vu, fig. 4.—* REEve, Conch. Icon., XVI, 1865, pl. xxii, fig. 107.—* B. H. Wrieut, Check List, 1888.—* Pa TEL, Conch. Sam., ITI, 1890, p. 149. * Margaron (Unio) cuneolus LEA, Syn., 1852, p. 24; 1870, p. 38. t* Unio clinchensis Lma, Pr. Ac. N. Sci. Phila., XI, 1867, p. 81; *Jl. Ac. N. Sei. Phila., VI, 1868, p. 278, pl. xxxvut, fig. 91; *Obs., XII, 1869, p. 38, pl. xxxvil, fig. 91.—* B. H.Wricut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 148. * Margaron (Unio) clinchensis La, Syn., 1870, p. 38. Tennessee River system. +PLEUROBEMA LESLEYI Lea. * Unio lesleyi Lea, Pr. Ac. N. Sci. Phila., IV, 1860, p. 306; *J1. Ac. N. Sci. Phila., IV, 1860, p. 352, pl. Lvl, fig. 177; *Obs., VIII, 1860, p. 34, pl. Lvui1, fig. 177.— *B. H. Wricut, Check Lists 1888. * Margaron (Unio) lesleyi LEA, Syn., 1870, p. 40. Kentucky; Tennessee. +t PLEUROBEMA RAVENELIANA Lea. *Unio ravenelianus L¥A,! Tr. Am. Phil. Soc., V, 1834, p. 32, pl. 111, fig. 5; *Obs., I, 1834, p. 144, pl. 11, fig. 5.—* Ferussac, Guer. Mag., 1835, p. 29.—* HANLEY, Test. Moll., 1842, p. 187; *Biv. Shells, 1843, p. 187, pl. xx, fig.59.—* CaTLow and REEVE, Conch. Nom., 1845, p. 63.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p.495.—* KusTER,Conch.Cab. Unio, 1862, p. 269, pl. xc1, fig. 1.—* REEVE, Conch. Icon., XVI, 1864, pl. xvi, fig. 70.—* B. H. Wricut, Check List, 1888. *Margarita (Unio) ravenelianus LEA, Syn., 1836, p. 22; 1838, p. 18. *Margaron (Unio) ravenelianus, LEA, Syn., 1852, p. 26; 1870, p. 40. *Unio rudis CONRAD, Monog., IX, 1837, p. 76, pl. xxi, fig. 1.—* CONRAD, Pr. Acad. N. Sci. Phila., VI, 1853, p. 257. *Unio decisus KUSTER, (part) Conch. Cab. Unio, 1852, p. 41, pl. vi, fig. 1. Kentucky; Tennessee; western North Carolina. +t PLEUROBEMA OVIFORMIS Conrad. * Unio oviformis CONRAD, New F. W. Shells, 1834, p. 46, pl. m1, fig. 6; p. 70.— * FERUSSAC, Guer. Mag., 1835, p. 29.—* MOLLER, Syn. Nov. Gen., 1836, p. 208.—* CHENU, Bib. Conch., Ist ser., III, 1845, p. 22, pl. 1, fig. 7.—* Con- RAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 254.—*H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 495.—* B. H. Wricat, Check List, 1888.—* P& TEL, Conch. Sam., III, 1890, p. 162. Margaron (Unio) oviformis LA, Syn., 1852, p. 26; 1870, p. 40. Tennessee. 'In May, 1834, Conrad published a Unio raveneli in New Fresh Water Shells (p. 39) which belongs to the complanatus group. Lea’s name, ravenelianus, appeared in August or September of the same year. Conrad, claiming priority for his name, substituted that of Unio rudis for Lea’s species. As the names are really different, that of Lea had better stand. No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. T49 +tPLEUROBEMA ACUENS Lea. * Unio acuens LEA, Pr. Ac. Nat. Sci. Phila., I, 1871, p.190; * Jl. Ac. Nat. Sci. Phila., VIII, 1874, p. 27, pl. vii, fig. 24; *Obs., XIII, 1874, p. 31, pl. vim, fig. 24.— *B. H. WRIGHT, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 143. Tennessee River system. +t PLEUROBEMA ORNATA Lea. * Unio ornatus LKa, Pr. Ac. N. Sci. Phila., V, 1861, p. 4; *Jl. Ac. N. Sci. Phila., V, 1862, p. 85, pl. x1, fig. 234; *Obs., VIII, 1862, p. 89, pl. x1, fig. 234.— *PxTEL, Conch. Sam., III, 1890, p. 162. * Margaron (Unio) ornatus LEa, Syn., 1870, p. 57.1 Alabama. +PLEUROBEMA APPRESSA Lea. *Unio appressus LEA, Pr. Ac. N. Sci. Phila., I, 1871, p. 189; * Jl. Ac. N. Sci. Phila., VIII, 1874, p. 12, pl. 11, fig. 8.—* Obs., III, 1874, pl. mz, fig. 8—*B. H. WriaGut, Check List, 1888. * Unio argenteus SOWERBY, Conch. Icon., XVI, 1866, pl. xxxvit, fig. 204. tUnio tuscumbiensis La, Pr. Ac. N. Sci. Phila., I, 1871, p. 191; *Jl. Ae. N. Sci. Phila., VIII, 1874, p. 11, pl. 1, fig. 7; *Obs., XIII, 1874, p. 15, pl. 10, fig. 7.— *B. H. Wricut, Check List, 1888. *Unio flavidus Lua, Pr. Ac. N. Sci. Phila., II, 1872, p.156; * Jl. Ac. N. Sci. Phila., VIII, 1874, p. 28, pl. 1x, fig. 25; *Obs., XIII, 1874, p. 32, pl. 1x, fig. 25.— *B. H. Wricut, Check List, 1888. Tennessee River system. +PLEUROBEMA TESSERULZ Lea. *Unio tesserule Lea, Pr. Ac. N. Sci. Phila., VI, 1861, p.392; *J1. Ac. N. Sci. Phila., VI, 1866, p. 40, pl. xv, fig. 39; *Obs., XI, 1867, p. 44, pl. xiv, fig. 38.—* B. H. WricGut, Check List, 1888. *Margaron (Unio) tesserule LEA, Syn., 1870, p. 36. Nolachucky River, Tennessee. tPLEUROBEMA VALIDA Lea. *Unio validus LEa, Pr. Ac. N. Sci. Phila., I, 1871, p.189; *Jl. Ac. N. Sci. Phila., VEE S74- pp. .6.- ply i fig. 2-3 Obs.) Sil 1si45 ps; 10 plan ne. 2:—* B. EH. WRIGHT, Check List, 1888. Tennessee. +PLEUROBEMA ABACUS Haldeman.2 * Unio abacus HALDEMAN, Jl. Ac. N. Sci. Phila., VIII, 1842, p. 202.—* Conran, Pr. Ac. N. Sci. Phila., VI., 1853, p. 244.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p.495.—* B. H. Wriaut, Check List, 1888.—* Pa TEL, Conch. Sam., IIT, 1890, p. 143. * Margaron (Unio) abacus LEA, Syn., 1852, p. 24; 1870, p. 38 Tennessee and southwest Virginia. ! The only specimen I have seen (the type) is a young shell, which I can not refer with certainty to any other species. 2 As this species was not figured and I have not seen the type, I am unable to be absolutely certain what it is. In the Lea collection are four specimens labeled “¢ Unio abacus Hald.,’”’ which are close to appressus. 750 PROCEEDINGS OF THE NATIONAL MUSEUM | VOL. XXIL +PLEUROBEMA SWORDIANA 6S. H. Wright. * Unio swordianus 8. H. WricuT, Naut., XI, 1897, p. 4.! * Pleurobema swordiana, Simpson, Pr. Ac. N. Sci. Phila., 1900, p. 81, pl. rv, fig. 4. Head waters of the Tennessee River. +PLEUROBEMA TUMESCENS Lea. * Unio tumescens LEA, Pr. Am. Phil. Soc., IV, 1845, p. 164; Tr. Am. Phil. Soc., X, 1848, p. 71, pl. 11, fig. 7; Obs., IV, 1848, p. 45, pl. 111, fig. 7.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 259.—* H. and A. ApAMs, Gen. Rec. Moll., II, 1857, p- 496.—* B. H. Wrieut, Check List, 1888.—* ParEeL, Conch. Sam., III, 1890, p. 170. * Margaron (Unio) tumescens Lea, Syn., 1852, p. 25; 1870, p. 38. +* Unio radiosus Lea, Pr. Ac. N. Sci. Phila., I, 1871, p. 192; *J1. Ac. N. Sci. Phila., VII, 1874,p. 13, pl. m1, fig: 95 “Obs, XA, 18745 p. 17," pl. ma geo *B. H. Wriaut, Check List, 1888. Tennessee. The localities, Alexandria, Louisiana, of Lea, for the type, and Ouachita River, Arkansas, given by Call, are open to doubt. +PLEUROBEMA DOLABELLOIDES Lea. * Unio dolabelloides Lea, Pr. Am. Phil. Soc., 1, 1840, p. 288; *Tr. Am. Phil. Soc., VIII, 1842, p. 215, pl. xv, fig. 31; * Obs., III, 1842, p. 53, pl. xv, fig. 51.—*Con- RAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 248.—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 492.—* CHENU, II]. Conch., 1858, pl. xx1x, figs. 4, 4a, 4b.— *Kuster, Conch. Cab., 1861, p. 214, pl. Lxx1, fig. 3.—* SowkERBy, Conch. Icon., XVI, 1866, pl. xxxvu, fig. 205.—* B. H. Wricgut, Check List, 1888.— *PmTEL, Conch. Sam., III, 1890, p. 151. *Margaron (Unio) dolabelloides LEA, Syn., 1852, p. 35; 1870, p. 56. | t * Unio thorntonii, Lma, Pr. Ac. N. Sci. Phila., I, 1857, p. 83; *J1. Ac. N. Sci. Phila., VI, 1866, p. 38, pl. xiv, fig. 36; * Obs., XI, 1867, p. 42, pl. xrv, fig. 36.—* B. H. Wriaut, Check List, 1888.—*P «TEL, Conch. Sam., ITI, 1890, p. 169. * Margaron (Unio) thorntonii LEA, Syn., 1870, p. 56. t* Unio mooresianus LEA, Pr. Ac. N. Sci. Phila., I, 1857, p.83; *J1. Ac. N. Sci. Phila., VI, 1866, p. 39, pl. x1v, fig. 37; *Obs., XI, 1867, p. 43, pl. xtv, fig. 37.—* B. H. Wriacut, Check List, 1888. *Margaron (Unio) mooresianus LEA, Syn., 1870, p. 39. *Unio moorenianus P TEL, Conch. Sam., ITT, 1890, p. 159. t* Unio recurvatus Lm, Pr. Ac. N. Sci. Phila., I, 1871, p. 192; *Jl. Ac. N. Sci. Phila., VIII, 1874, p. 10, pl. 1, fig. 6; *Obs., XIII, 1874, p. 14, pl. 11, fig.6.—* B. H. Wricut, Check List, 1888. +* Unio circwmactus Lea,? Pr. Ac. N. Sci. Phila., I, 1871, p. 192; *Jl. Ac. N. Sci. Phila., VIII, 1874, pl. rv, fig. 11; Obs., XIII, 1874, p. 19, pl.1v, fig. 11.—* B. H. WriGuHtT, Check List, 1888. Tennessee River drainage. 1T am a little in doubt as to the validity of this species. °The figured type is certainly an adult, and that of dolabelloides the young of the same species. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. T51 t PLEUROBEMA SUBGLOBATA Lea. * Unio subglobatus Lea, Pr. Ac. N. Sci. Phila., I, 1871, p. 191; * Jl. Ac. N. Sci. Phila., VIII, 1874, p. 7, pl. 1, fig. 3; *Obs., XIII, 1874, p. 11, pl. 1, fig. 3.— *B. H. Wricut, Check List, 1888. Cumberland and Tennessee rivers. + PLEUROBEMA CRUDA Lea. * Unio crudus Lea, Pr. Ac. N. Sci. Phila., I, 1871, p. 190; *Jl. Ac. N. Sci. Phila., VIII, 1874, p. 14, pl. Iv, fig. 10; *Obs., XIII, 1874, p. 18, pl. rv, fig. 10.— *B. H. Wriaut, Check List, 1888.—* Pa TEL, Conch. Sam., ITI, 1890, p. 149. Cumberland, French Broad, and Holston rivers, Tennessee; Swamp Creek, Murray County, Georgia. + PLEUROBEMA BARNESIANA Lea. * Unio barnesianus Lua, Tr. Am. Phil. Soc., VI, 1838, p. 31, pl. x, fig. 26; *Obs., II, 1838, p. 31, pl. x, fig. 26.—* TrRoscHEL, Arch. fiir. Naturg., V, 1839, Pt. 2, p. 235.—* Haney, Test. Moll., 1842, p. 185; * Biv. Shells, 1843, p. 185, pl. xxl, fig. 14.—* CaTLow and REEVE, Conch. Nom., 1845, p. 56.—* ConraD Pr. Ac. N. Sci. Phila., VI, 1853, p. 245.—* H. and A. ADams, Gen. Rec. Moll., II, 1857, p. 495.—* CHENU, Ill. Conch., 1858, pl. x1x, figs. 2, 2a, 2b.— *SOwERBY, Conch. Icon., XVI, 1866, pl. xxx1v, fig. 180.—* B. H. Wrieut, Check List, 1888.—* Parr, Conch. Sam., III, 1890, p. 145. * Margarita ( Unio) barnesianus LEA, Syn., 18386, p. 20; 1838, p. 17. * Margaron (Unio) barnesianus LEA, Syn., 1852, p. 24; 1870, p. 38. * Unio ravenelianus REEVE, Conch. Icon., XVI, 1864, pl. xvi, fig. 70. t* Unio tellicoensis Lea, Pr. Ac. N. Sci. Phila., II, 1872, p. 155; *Jl. Ac. N. Sci. Phila., VIII, 1874, p. 31, pl. x, fig. 28; *Obs., XIII, 1874, p. 35, pl. x, fig. 28.— *B. H. Wricut, Check List, 1888. Cumberland and Tennessee river systems. PLEUROBEMA LYONII Lea. * Unio lyonit Lm, Pr. Ac. N. Sci. Phila., IX, 1865, p. 89; *Jl. Ac. N. Sci. Phila., VI, 1869, p. 259, xxx11, fig. 74; *Obs., XII, 1869, p. 19, pl. xxxu, fig. 74.— *B. H. WRIGHT, Check List, 1888. s Margaron (Unio) lyonit Lea, Syn., 1870, p. 56. Tennessee River system. PLEUROBEMA PUDICA Lea. * Unio pudicus LEA, Pr. Ac. N. Sci. Phila., IV, 1860, p.92; *J1. Ac. N. Sci. Phila., IV, 1860, p. 346, pl. Lv, fig. 171; *Obs., VIII, 1860, p. 28, pl. Lvt, fig. 171.— *SOWERBY, Conch. Icon., XVI, 1868, pl. Lxxx1, fig. 427.—*B. H. Wriaut, Check List, 1888. —? Samm, Conch. Sam., ITT, 1890, p. Mg *Margaron ( Unio) pudicus LEA, Syn., 1870, p. 37. *Unio subrotundus SOWERBY, Conch. Icon., XVI, 1866, pl. xxxvil, fig. 201. Tennessee River system. + PLEUROBEMA BIGBYENSIS Lea. *Unio bigbyensis LEA, Pr. Am. Phil. Soc., II, 1841, p. 30; *Tr. Am. Phil. Soc., VIII, 1843, p. 237, pl. xx, fig. 51; *Obs., III, 1842, p. 75, pl. xxu, fig. 51.— 752 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. * CoNRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 245.—* H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 495.—* CHENU, I]. Conch., 1858, pl. xx11. figs. 5, 5a, 56.— * KUSTER, Conch. Cab. Unio, 1862, p. 279, pl. xcrv, fig. 3.—* SOWERBY, Conch. Icon., XVI, 1866, pl. X11, fig. 227.—* B. H. WRIGHT, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 146. * Margaron (Unio) bigbyensis LEA, Syn., 1852, p. 24, 1870, p. 38. Tennessee River drainage; Indian Territory? Texas? The two last localities very doubtful. (Group of Plewrobema decisa.) Shell solid, inflated, ovate to elliptical, very inequilateral, somewhat truncated in front and rounded or bluntly pointed behind, wedge- shaped when looked at from above; base slightly angled in front, then nearly straight for two-thirds of its length, from whence it curves to the posterior point; beaks high, curved inward and forward; beak sculpture consisting of a few coarse, irregularly concentric ridges which curve slightly upward behind; epidermis tawny to brownish, rayless, the rest periods very distinctly marked by dark bands; pseudo- cardinals stumpy, ragged, often showing a tendency to elongation in the direction of the axis of the shell. Animal having the branchi rather small, inner the larger, free nearly or quite the entire length of the abdominal sac, marsupium occupying all but the extreme posterior end of the outer gills; branchiz and anal openings papillose. + PLEUROBEMA DECISA Lea. * Unio decisus LmA, Tr. Am. Phil. Soc., IV, 1831, p. 92, pl. x11, fig. 23; * Obs., I, 1834, p. 102, pl. xu, fig. 23.—* ConraD, New F. W. Shells, 1834, p. 68.—* FERUS- sac, Guer. Mag., 1835, p. 28.—* ConraD, Monog., I, 1835, p. 6, pl. 111, fig. 2.— * HANLEY, Test. Moll., 1842, p. 187; Biv. Shells, 1843, p. 187, pl. xxu1, fig. 21.— * CaATLOW and REEVE, Conch. Nom., 1845, p. 58.—* Kuster, Conch. Cab. Unio, 1852, p. 41, pl. vu, fig. 3..—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 248.— *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 495.—* CHENU, II. Conch., 1858, pl. x vil, figs. 3, 83a, 3b.—* REEVE, Conch. Icon., XVI, 1864, pl. xvi, fig. 71.—B. H.Wricut, Check List, 1888.—* Parr, Conch. Sam., IIT, 1890, p. 150. * Margarita (Unio) decisus Lea, Syn., 1836, p. 21; 1838, p. 18. *Margaron (Unio) decisus LEA, Syn., 1852, p. 26; 1870, p. 40. * Unio scalenius Say, Am. Conch., VI, 1834. t* Unio anaticulus Lm, Pr. Ac. N. Sci. Phila., V, 1861, p. 40; “Jl. Ac. N. Sci. Phila., 1862, p.92, pl. xu, fig. 240; *Obs., VIII, 1862, p. 96, pl. xm, fig. 240.— *SoweERBy, Conch. Icon., XVI, 1866, pl. xxxvu, fig. 199.—* B. H. WRIGHT, Check List, 1888.—* Pater, Conch. Sam., III, 1890, p. 144. *Margaron (Unio) anaticulus LEA, Syn., 1870, p. 40. *Unio consanguineus Lea, Pr. Ac. N. Sci. Phila., VI, 1861, p.60; *J1l. Ac. N. Sci. Phila., V, 1862, p. 67, pl. vu, fig. 217; *Obs., VIII, 1862, p. 71, pl. vu, fig. 217.— *SowERBY, Conch. Icon., XVI, 1868, pl. Lxxvin, fig. 409.—* B. H. WRIGHT, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 148. *Margaron (Unio) consanguineus LEA, Syn., 1870, p. 40. 1 This figure is probably that of U. decisus. That on plate vu, which he refers to that species, is most likely Lea’s ravenelianus. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 153 t* Unio crebrivittatus Lea, Pr. Ac. N. Sci. Phila., VI, 1861, p.60; *Jl. Ac. N. Sci. Phila., VI, 1866, p. 43, pl. xv, fig. 41; *Obs., XI, 1867, p. 47, pl. xv, fig. 41,.— *B. H. Wriaut, Check List, 1888. * Margaron (Unio) crebrivittatus Lea, Syn., 1870, p. 40. *? Unio medius REEVE, Conch. Icon., XVI, 1864, pl. xvul, fig. 77. Alabama and Tombigbee river systems. + PLEUROBEMA CHATTANOOGAENSIS Lea. *Unio chattanoogaensis LEA, Pr. Ac. N. Sci. Phila., II, 1858, p. 166; *J1. Ac. N. Sci. Phila., IV, 1859, p. 209, pl. xxv, fig. 90; * Obs., VII, 1859, p. 27, pl. xxv, fig. 90.—* REEVE, Conch. Icon., X VI, 1864, pl. x v1, fig. 69.—B. H. WricuT, Check List, 1888.—* P&TEL, Conch. Sam., III, 1890, p. 148. * Margaron (Unio) chattanoogaensis LEA, Syn., 1870, p. 40.! Alabama River system. + PLEUROBEMA INTERVENTUS Lea. * Unio interventus Lea, Pr. Ac. N. Sci. Phila., V, 1861, p. 60; * Jl. Ac. N. Sci. Phila., V, 1862, p. 84, pl. x1, fig. 233; *Obs., VIII, 1862, p. 88, pl. x1, fig. 233.— *B. WH. WRIGHT, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 156. *Margaron (Unio) interventus LEA, Syn., 1879, p. 40. t* Unio pallidofulvus Lea, Pr. Ac. N. Sci. Phila., V, 1861, p. 60; * Jl. Ac. N. Sci. Phila., V, 1862, p. 83, pl. x1, fig. 332; *Obs., VIII, 1862, p. 87, pl. x1, fig. 232.— *B. H. Wrieut, Check List, 1888. *Margaron (Unio) pallidofulvus LEA, Syn., 1870, p. 40. Cahawba River, Alabama. +PLEUROBEMA MURRAYENSIS Lea. *Unio murrayensis LEA, Pr. Ac. N. Sci. Phila., II, 1868, p. 143; *Jl. Ac. N. Sci. Phila., VI, 1869, p. 303, pl. xuvi, fig. 115; *Obs., XII, 1869, p. 62, pl. xLv1, fig. 115.—* B. H. Wriaut, Check List, 1888. *Margaron (Unio) murrayensis LEA, Syn., 1870, p. 40. Coosa River system; Columbus, Georgia? (Group of Plewrobema curta.) Shell elongate triangular, truncated in front, rounded on the base where it is quite full behind the middle, with a low posterior ridge, the space between the middle of the disk and the ridge flattened or some- times slightly excavated, rather sharply pointed behind; umbonal region very prominent; beaks well forward; beak scuipture not ob- served; epidermis rather smooth, brownish olive; pseudocardinals dis- tinet, triangular, radiate; laterals heavy, slightly curved; cicatrices small and deep; nacre iridescent posteriorly. Animal with the gills large, semicircular, the outer slightly larger than the inner, which are free nearly their whole length from the abdominal sac; marsupium occupying the entire length of the outer gills. ‘Probably did not come from Chattanooga, Tennessee, as Dr. Lea believes, but from some of the streams of northern Georgia or Alabama, which drain southward. According to Hon. T. H. Aldrich, the animal of this and allied species is a brilliant scarlet. _Proe. N. M. vol. xxii 48 154 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. tPLEUROBEMA CURTA Lea. * Unio curtus LEA, Pr. Ac. N. Sci. Phila., III, 1859, p. 112; *Jl. Ac. N. Sci. Phila., V, 1862, p. 103, pl. xvi, fig. 253; *Obs., VIII, 1862, p. 107, pl. xvu, fig. 256.— *B. H. WricutT, Check List, 1888. * Margaron (Unio) curtus LEA, Syn., 1870, p. 40. Tombigbee River, Columbus, Mississippi. (Group of Plewrobema troscheliana.) Shell rather small, solid, rounded-triangular, inflated, somewhat inequilateral, slightly pointed near the posterior base, and rounded angular at the hinder end of the ligament; base of the shell almostevenly rounded; posterior ridge low; beaks high and slightly curved inward and forward over a well-defined lunule; epidermis dull tawny, showing the rest periods and occasionally marked with a radiating row of dark green, squarish spots in front of the posterior ridge; hinge plate wide and flat; pseudocardinals small, triangular, rough; laterals short, curved; muscle scars small, rather deep. Animal with semicircular gills, the inner the larger and free from the abdominal sac half to nearly their whole length; ovisacs of outer gills apparently in pairs. t PLEUROBEMA TAITIANA Lea. *Unio taitianus LEA, Tr. Am. Phil. Soc., V, 1834, p. 39, pl. Iv, fig. 11; *Obs., I, 1834, p. 151, pl. 1v, fig. 11.—* FERussac, Guer. Mag., 1835, p. 29.—* HaNLry, Test. Moll., 1842, p. 186; * Biv. Shells, 1848, p. 186, pl. xx111, fig. 26.—* Con- RAD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 258.— *H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 496.— *B. H. Wricut, Check List, 1888.—* Parry, Conch. Sam., III, 1890, p. 169. * Margarita (Unio) taitianus LEA, Syn., 1836, p. 21; 1838, p. 18. *Margaron (Unio) taitianus LEA, Syn., 1852, p. 25; 1870, p. 38. Alabama River. + PLEUROBEMA COR Conrad. * Unio mytilloides CONRAD, Am. JI. Sci., XXV, 1834, p. 343, pl. 1, fig. 7.! * Unio cor CONRAD, New F. W. Shells, 1834, p. 28, pl. 111, fig. 3, p. 68.—* FERUSSAC, Guerin Mag., 1835, p. 29.—*M6LLER, Syn. Nov. Gen., 1836, p. 202.—* HANLEY, Test. Moll., 1842, p. 187; * Biv. Shells, 1843, p. 187.—* CHENU, Bib. Conch., Ist 1Conrad says this is between Unio ellipsis Lea and mytilloides Rafinesque, but that he has no doubt that it is the latter. It is certainly very different from the shell Rafinesque figures and describes as Pleurobema mytilloides. (Ann. Gen. Sci. Phys. Brux., XIII, 1820, p. 313, pl. Lxxxur, figs. 8-10.) Conrad’s Unio cor was published in May, 1834, and his mytilloides in January of the same year, so that the latter has priority, but as Rafinesque’s name was placed under the genus Pleurobema, and as I place Conrad’s species, which is an entirely different thing, in the same genus, the name mytilloides can not be used for it, and it must therefore take the next name proposed, which is Conrad’s cor. Dr. Lea admits Rafinesque’s mytilloides with doubt, and in his collection places under that name specimens which I regard asa rather elongated Quadrula pyramidata. Rafinesque’s figure represents an elongated shell, almost absolutely straight on the dorsal line, and with the beaks carried far in front of the rest of the shell. I have never seen any thing which at all agrees with it. No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 755 ser., III, 1845, p. 16, pl. 111, fig. 2.—* CaTLow and REEVE, Conch. Nom., 1845, p. 57.—* ConraD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 247.—* H. and A. ADams, Gen. Rec. Moll., II, 1857, p. 495.—* B. H.Wriaut, Check List, 1888.—* Parr, Conch. Sam., III, 1890, p. 149. *Margarita (Unio) cor LEA, Syn., 1836, p. 21; 1838, p. 18. *Margaron (Unio) cor LEA, Syn., 1852, p. 26; 1870, p. 39. t*Unio crapulus Lea, Pr. Ac. N. Sci. Phila., V, 1861, p. 39; *Jl. Ac. N. Sei. Phila., VI, 1866, p. 42, pl. xv, fig. 40; *Obs., XI, 1867, p. 46, pl. xv, fig. 40.—* B. H. Wrieut, Check List, 1888. *Margaron (Unio) crapulus Lea, Syn., 1870, p. 41. t*Unio lewisii Lea, Pr. Ac. N. Sci. Phila., V, 1861, p.40; * Jl. Ac. N. Sci. Phila., V, 1862, p. 71, pl. vir, fig. 220; *Obs., VIII, 1862, p. 75, pl. vim, fig. 220.— *B. H. Wricut, Check List, 1888. *Margaron (Unio) lewisiti LEA, Syn., 1870, p. 56. _ Alabama River system; Flint River, Georgia. + PLEUROBEMA PEROVATA Conrad. *Unio perovatus CONRAD, Am. JI. of Sci., XXV, 1834, p. 338, pl. L, fig. 3; *? New F. W. Shells, 1834, p. 47, pl. 11, fig. 3..—FERuUSSAC, Guer. Mag., 1835, p. 29— * MOLLER, Syn. Noy. Geu., 1836, p. 199; * Test. Moll., 1842, p. 190.—*Hantry, Biv. Shells, 1843, p. 190.—* CHENU, Bib. Conch., Ist ser., III, 1845, p. 22, pl. 1, fig. 3.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 254.—*H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 494.—*B. H. Wricut, Check List, 1888, *Margarita (Unio) perovatus LEA, Syn., 1836, p. 23; 1838, p. 19. Margaron (Unio) perovatus Lra, Syn., 1852, p. 27; 1870, p. 42. Prairie Creek (tributary of the Tombigbee), Marengo County, Alabama. +PLEUROBEMA NUCLEOPSIS Conrad. Unio nucleopsis CONRAD, Ann. and Mag. Nat. Hist., IV, 1849, p. 301;2 *Pr. Ac. N. Sci. Phila., IV, 1849, p. 154; *J1. Ac. N. Sci. Phila., I, 1850, p. 276, pl. XXXvuI, fig. 81.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 492.— * KUSTER, Conch. Cab. Unio, 1861, p. 217, pl. LX x11, fig. 3.—* REEVE, Conch. Icon., XVI, 1864, pl. xvi, fig. 68.—*B. H. Wriaut, Check List, 1888.— * P&TEL, Conch. Sam., ITI, 1890, p. 161. *Margarita ( Unio) nucleopsis LEA, Syn., 1852, p. 35; 1870, p. 56. Coosa River system. + PLEUROBEMA STABILIS Lea. *Unio stabilis Lea, Pr. Ac. N. Sci. Phila., V, 1861, p. 59; *J1. Ac. N. Sei. Phila., V, 1862, p. 71, pl. vim, fig. 221;-* Obs., VIII, 1862, p. 75, pl. vu, fig. 221.— *B. H. WRIGHT, Check List, 1888. *Margaron (Unio) stabilis LEA, Syn., 1870, p. 38. tUnio medius Lea, Pr. Ac. N. Sci. Phila., V, 1861, p. 40; * Jl. Ac. N. Sci. Phila., PN; Ase p.18, plex) fies 227-30 Obs, VIII. 1862) pe $2. plix ip. 227.— = Sows ERBY, Conch. Icon., XVI, 1868, pl. Lxx111, fig. 375.—* B. H. Wricut, Check List, 1888.—* PareL, Conch. Sam., III, 1890, p. 158. Margaron (Unio) medius LEA, Syn., 1870, p. 40. Coosa River, Alabama. 1'This figure differs a good deal from that in the American Journal of Science, and it may be taken from a younger, less inflated shell. ?Very close to P.irrasa, and it may be that when a sufficient amount of material is examined the two will have to be placed together. 156. PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. - } PLEUROBEMA TROSCHELIANA Lea. * Unio troschelianus LEA, Tr. Am. Phil. Soc., X, 1852, p. 280, pl. x xu, fig. 39; *Obs., V, 1852, p. 36, pl. xxiu, fig. 39.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 496.—* B. H. Wrieut, Check List, 1888.—* PHTEL, Conch. Sam., III, 1890, p. 170. * Margaron (Unio) troschelianus LEA, Syn., 1852, p. 26; 1870, p. 40. Alabama River system. PLEUROBEMA IRRASA Lea. * Unio irrasus Lea, Pr. Ac. N. Sci. Phila,, V, 1861, p. 38; *Jl. Ac. N. Sci. Phila., V, 1862, p. 91, pl. x11, fig. 239; *Obs., VIII, 1862, p.95, pl. x11, fig. 239.— *B. H. WriGuT, Check List, 1888. * Margaron (Unio) irrasus LEA, Syn., 1870, p. 38. Coosa River system. + PLEUROBEMA ALTA Conrad. *Unio altus CONRAD, Jl. Ac. N. Sci. Phila., II, 1854, p. 298, pl. xxvii, fig. 5.— *B. H. Wriacut, Check List, 1888. * Margaron( Unio) altus LEA, Syn., 1870, p. 42. t * Unio fibuloides Lea, Pr. Ac. N. Sci. Phila., III, 1859, p. 154; Jl. Ac. N. Sci. Phila., IV, 1859, p. 219, pl. xxvii, fig. 100; *Obs., VII, 1859, p. 37, pl. xxvill, fig. 100.—* SowErRBy, Conch. Icon., XVI, 1866, pl. x1, fig. 223.— *B. H. Wricut, Check List, 1888.—-* P&TEL, Conch. Sam., III, 1890, p. 152. Margaron (Unio) fibuloides Lea, Syn., 1870, p. 56. Connasauga River, Georgia. + PLEUROBEMA HARTMANIANA Lea. *Unio hartmanianus Lm, Pr. Ac. N.Sci. Phila., IV, 1860, p. 307; *Jl. Ac. N. Sei. Phila., V, 1862, p: 73, pl. vim, fig. 222; *Obs., VIII, 1862, p. 77, pl. vim, fig. 222.—* B. H. Wrieut, Check List, 1888. ; *Margaron (Unio) hartmanianus Lea, Syn., 1870, p. 38. Coosa ttiver, Alabama. Dr. Lea has shells in his collection from the Clinch River which he places with this species, which I am certain belong to the Clava group. +t PLEUROBEMA INSTRUCTA Lea. * Unio instructus Lea, Pr. Ac. N. Sci. Phila., V, 1861, p.59; *Jl. Ac. N. Sci. Phila., V, 1862, p. 82, pl. x, fig. 230; *Obs., VIII, 1862, p. 86, pl. x, fig. 230.—* B. H. WriGcut, Check List, 1888. * Margaron (Unio) instructus Lua, Syn., 1870, p. 38. Cahawba River, Alabama. (Group of Pleurobema showalterii.) Shell small, rounded triangular, inflated, slightly truncated ante- riorly, posterior end arched and ending in a bluntly rounded point at the post base, posterior ridge well defined; umbonal region full; beaks rather prominent, the sculpture not observed; epidermis brown, not rayed; hinge plate rather wide; pseudocardinals small, triangular, NO. 1208. SYNOPSIS OF THE NATADES—SIMPSON. ont radial, roughened; laterals short, heavy, nacre white, brilliantly irides cent posteriorly; beak cavities shallow. Animal apparently having ovisacs in pairs which are slightly wavy and lirate at the base; gills rather large, semicircular, inner much the larger, partly free from the abdominal sac; mantle thin, thickened at edge, and bordered with a dark line.’ tPLEUROBEMA SHOWALTERII Lea. * Unio showalterii LEA, Pr. Ac. N. Sci. Phila., IV, 1860, p. 307; *Jl. Ac. N. Sci. Phila., V, 1862, p. 73, pl. vii, fig. 223; Obs., VIII, 1862, p. 77, pl. vit, fig. 223.— *SOWERBY, Conch. Icon., XVI, 1868, pl. LXxx1, fig. 426.—* B. H. Wriaurt, Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p.167. * Margaron (Unio) showalterii LEA, Syn., 1870, p. 55. Coosa River, Alabama. (Group of Pleurobema nux.) Shell oval, inflated, moderately solid, with a low posterior ridge, swollen at the post-basal part; posterior end pointed at the termi- nation of the posterior ridge; beaks full, rather high, considerably removed from the anterior end; epidermis pale to dark brown, rest lines very distinct; pseudocardinals small, stumpy, radiate, rough, laterals straight; nacre brilliantly iridescent posteriorly; front part of shell heavy, suddenly becoming thinner behind. Animal unknown. +t PLEUROBEMA VERA Lea. “Unio verus Lea, Pr. Ac. N. Sci. Phila., V, 1860, p.140; *J1. Ac. N. Sci. Phila., V, 1862, p. 83, pl. x1, fig. 231; *Obs., VIII, 1862, p. 87, pl. x1, fig. 231.—* B. H. WRIGHT, Check List, 1888. *Margaron (Unio) verus LEA, Syn., 1870, p. 38. Black Warrior and Cahawba rivers, Alabama. +tPLEUROBEMA HAGLERI Frierson. “Unio (Pleurobema) hagleri FRIERSON, Nautilus, XIII, 1900, p. 109, pl. 11. North River, Alabama, near Tyner. tPLEUROBEMA RUBELLA Conrad. “Unio rubellus CONRAD, New F. W. Shells, 1834, p. 38, pl. v1, fig. 2, p. 71.—*FERUs- SAC, Guer. Mag., 1835, p. 29.—*MGLLER, Syn. Nov. Gen., 1836, p. 205.—*Han- LEY, Test. Moll., 1842, p. 201; *Biv. Shells, 1843, p. 201.—*CHENU, Bib. Conch., Ist ser., III, 1845, p. 20, pl. 1, fig. 2.—*CaTLow and REEVE, Conch. Nom., 1845, p. 63.—*ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 257.—*H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 492.—*B. H. Wriaut, Check List, 1888.—*P «TEL, Conch. Sam., III, 1890, p. 166. 'The single species which I place in this group is quite variable. Some specimens approach Quadrula solida and trigona in general shape, while others are more like ! leurobema irrasa and troscheliana. I judge from the character of the gills that the iarsupium is confined to the outer pair. T58 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. * Margarita (Unio) rubellus LEA, Syn., 1836, p. 33; 1888, p. 28. *Margaron (Unio) rubellus Lea, Syn., 1852, p. 34; 1870, p. 55. t * Unio rudis CONRAD, } Monog., No. 9, 1837, p. 76, pl. xLu1, fig. 1.—*B. H. WRiGuHT, Check List, 1888. t* Unio pulvinulus Lea, Pr. Am. Phil. Soc., IV, 1845, p. 164; *Tr. Am. Phil. Soc., X, 1848, p. 81, pl. vu, fig. 24; * Obs., [V, 1848, p. 55, pl. vu, fig. 24.—* CoNRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 255.—* H. and A. ADams, Gen. Rec. Moll., II, 1857, p. 495.—* B. H. WricutT, Check List, 1888.—* PaTEeL, Conch. Sam., III, 1890, p. 164. *Margaron (Unio) pulvinulus Lea, Syn., 1852, p. 26; 1870, p. 41. Black Warrior and Cahawba rivers, Alabama. t PLEUROBEMA FURVA Conrad.? *Unio furvus CONRAD, New F. W. Shells, 1834, p. 39, pl. vi, fig. 3, page 69.— * FERUSSAC, Guer. Mag., 1835, p.29.—* MOLLER, Syn. Nov. Gen., 1836, p. 205.— * CHENU, Bib. Conch., Ist ser., III, 1845, p. 20, pl. 11, fig. 4.—*ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 250.—* B. H. Wricut, Check List, 1888. Black Warrior River, Alabama. t PLEUROBEMA AVELLANA Simpson. * Pleurobema avellana SIMPSON, Pr. Ac. N. Sci. Phila., 1900, p. 81, pl. 11, figs. 6, 7. Cahawba River, Alabama. + PLEUROBEMA NUX Lea. * Unio nux Lma, Tr. Am. Phil. Soc., X, 1852, p. 283, pl. xxiv, fig.43; * Obs. V, 1852, p. 39, pl. xxtv, fig. 43.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 494.— *B.H. WRIGHT, Check List, 1888.—* P&TEL, Conch. Sam., III, 1890,p. 161. * Margaron (Unio) nux LEA, Syn., 1852, p. 31; 1870, p. 49. t Unio cinnamomicus Lna, Pr. Ac. N. Sci. Phila., V, 1861, p. 39; *Jl. Ac. N. Sci. Phila., V, 1862, p. 100, pl. xvi, fig. 248; *Obs., VIII, 1862, p. 104, pl. xvi, fig. 248.—* SOWERBY, Conch. Icon., XVI, 1868, pl. Lxxxuu, fig. 438.—* B. H. Wricut, Check List, 1888. * Margaron (Unio) cinnamomicus LKa, Syn., 1870, p. 49. Alabama River system. +PLEUROBEMA PINKSTONI S. H. Wright. * Unio pinkstoni 8. H. WRIGHT, Nautilus, X, 1897, p. 136. * Pleurobema pinkstoni SIMPSON, Pr. Ac. N. Sci. Phila., 1900, p. 81, pl. 1, fig. 8. Alabama River system. 1Conrad says that U. ravenelianus of Lea is the same as his U. rudus, which, accord- ing to Ravenel, is found in the French Broad River, though Conrad obtained his species in the Black Warrior. The species of Conrad is, however, quite distinct from that of Lea, the two never occurring in the same drainage system. 2T have seen what I believe are specimens of this species from the collections of the Hon. T. H. Aldrich and Mr. Bryant Walker, taken from the Black Warrior River, Alabama, but I think it not improbable that it may run into P. rubella. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 159 +PLEUROBEMA JOHANNIS Lea. * Unio johannis Lima, Pr. Ac. N. Sei. Phila., IIT, 1859, p.171; *Jl. Ac. N. Sci. Phila., IV, 1860, p. 340, pl. LV, fig. 168; *Obs., VIII, 1860, p. 25, pl. LV, fig. 168.—* B. H. WriGut, Check List, 1888. * Margaron (Unio) johannis LEA, Syn., 1870, p. 41. Alabama River system. + PLEUROBEMA HANLEYANA Lea. * Unio hanleyanus LEA, Tr. Am. Phil’ Soc., X, 1852, p. 279, pl. xx, fig. 37; *Obs., V, 1852, p. 35, pl. xxi, fig. 37.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 495.—* REEVE, Conch. Icon., XVI, 1864, pl. xv, fig. 76.\—* SowERBy, Conch. Icon., XVI, 1866, pl. xLv1, fig. 249.—* B. H. Wrieut, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 154. *Margaron (Unio) hanleyanus LEA, Syn., 1852, p. 26; 1870, p. 40. Coosa River drainage, Georgia and Alabama. tPLEUROBEMA FLAVIDULUS Lea. * Unio flavidulus La, Pr. Ac. N. Sci. Phila., V, 1861, p. 39; *Jl. Ac. N. Sci. Phila., V, 1862, p. 97, pl. xv, fig. 245; *Obs., VIII, 1862, p. 101, pl. xv, fig. 245.—* B. H. Wricut, Check List, 1888. * Margaron (Unio) flavidulus LEA, Syn., 1870, p. 40. Columbus, Mississippi. (Group of Plewrobema bulbosa.) Shell elongate oval, solid, inflated, with a high posterior ridge, ending in a point behind, above which it is feebly wrinkled; beaks full, seulpture not seen; epidermis smooth, dark, rayless; hinge strong; pseudocar- dinals heavy, torn, sometimes a small third one in the left valve; later- als heavy, club-shaped, granulate, two in the left valve and one and a small secondary lateral in the right. Animal unknown. + PLEUROBEMA BULBOSA Lea. * Unio bulbosus LEA, Pr. Ac. N. Sci. Phila., IX, 1857, p. 172; *Jl. Ac. N. Sci. Phila., IV, 1859, p. 191, pl. xx1, fig. 75; *Obs., VII, 1859, p. 9, pl. x x1, fig. 75.—* B. H. WRIGHT, Check List, 1888. : * Margaron (Unio) bulbosus Lea, Syn., 1870, p. 40. Ocmulgee and Flint rivers, Georgia. +PLEUROBEMA HARPERI B. H. Wright. *Unio harpert B. H. WRiGuHT, Naut., XIII, 1899, p. 6. * Pleurobema harperi Stmpson, Pr. Ac. N. Sci. Phila., 1900, p. 81, pl. 1, fig. 10. Altamaha and Flint rivers, Georgia; Suwanee River, Florida.’ 1Reeve states in his errata that this is not Unio hanleyanus. The figure agrees fairly well with the type of that species. 2This may prove to be a variety of P. bulbosa. 760 _ PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXU. +PLEUROBEMA RECLUSA B. H. Wright. “ Unio reclusus B. H. Wricut, Naut., XI, 1898, p. 3. * Pleurobema reclusa Stmpson, Pr. Ac. N. Sci. Phila., 1900, p. 82, pl. 1, fig. 2. Ocklocknee River, Leon County, Florida. (Group of Plewrobema brumbyana.) Shell oval, inflated, moderately solid, faintly swollen at post basal region; beaks rather prominent, somewhat distant from the anterior end; beak sculpture not seen; disks irregularly, concentrically sculp- tured; epidermis dark olive to blackish, striate; pseudocardinals sub- radiate, slightly compressed; beak cavities shallow; nacre iridescent posteriorly, somewhat thickened in front. +t PLEUROBEMA BRUMBYANA Lea. * Unio brumléyanus LEA,’ Proc. Am. Phil. Soc., II, 1841, p. 82. * Unio brumbyanus Lea, Tr. Am. Phil. Soc., VIII, 1842, p. 246, pl. xxv1, fig. 62; * Obs., III, 1842, p. 83, pl. xxvi, fig. 62.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 245.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 492.—* B. H. WriGcut, Check List, 1888.—* PaTEL, Conch. Sam., ITI, 1890, p. 146. * Margaron (Unio) brumbyanus LEA, Syn., 1852, p. 31; 1870, p. 49. t * Unio concolor LEA, Pr. Ac. N. Sci. Phila., V, 1861, p.40; *J1. Ac. N. Sci. Phila., V, 1862, p. 89, pl. x1, fig. 237; *Obs., VIII, 1862, p. 93, pl. xt, fig. 237.— * SowERBY, Conch. Icon., XVI, 1868, pl. Lxxx11, fig. 440.—* B. H. WRIGHT, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1870, p. 148. * Margaron (Unio) concolor LEA, Syn., 1870, p. 49. Alabama River system. (Group of Pleurobema argentea.) Shell solid, oval to rhomboid, generally compressed, beaks high but not inflated, well removed from the anterior end, with strong, irregular sculpture, which is curved up and swollen behind where the bars are slightly looped; epidermis brownish to straw color, sometimes having a few broken, blotched rays; teeth strong; cicatrices deep and distinct. Animal unknown.’ + PLEUROBEMA SIMULANS Lea. *Unio simulans Lea, Pr. Acad. N. Sci. Phila., I, 1871, p. 190; *Jl. Acad. N. Sci. Phila., VIII, 1874, p. 18, pl. v, fig. 15; *Obs., XIII, 1874, p. 22, pl. v, fig. 15.— ~B. H. Wricut, Check List, 1888. Black Warrior and Cahawba rivers, Alabama; Pine Barren Creek, Escambia County, Florida. 180 written in Proceedings; no doubt a typographical error, as the species was “named after Brumby. 2The species placed here are puzzling and seem to stand between Unio and Pleurobema. The color and the beak sculpture incline me to place them with the latter, and some of the species seem to show relationship with such forms as P. pudica and bigbyana. No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. T61 +PLEUROBEMA STRODEANA B. H. Wright. *Unio strodeanus B. H. WRIGHT, Nautilus, XII, 1898, p. 5. *Pleurobema strodeana SIMPSON, Pr. Ac. N. Sei. Phila., 1900, p. 81, pl.1, fig. 3. Escambia River, Florida; Flint River, Rhoadsville, Georgia. + PLEUROBEMA PATSALIGENSIS Simpson *Pleurobema patsaligensis Simpson, Pr. Ac. N. Sci. Phila., 1900, p.82, pl. 1, fig. 1. Little Patsaliga Creek, southeast Alabama. + PLEUROBEMA FAVOSA Lea. “Unio favosus LEA, Proc. Acad. N. Sci. Phila., VIII, 1856, p. 262; * Jl. Acad. N. Sei. Phila., IV, 1858, p. 58, pl. vi, fig. 40; * Obs., VI, p. 58, pl. vim, fig. 40.—* Sow- ERBY, Conch. Icon., XVI, 1868, pl. xc, fig. 488.—* B. H. Wriaut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 151. *Margaron (Unio) favosus LBA, Syn., 1870, p. 38. Alabama River system. + UNIO LENTICULARIS Lea. * Unio lenticularis LEA, Pr. Acad. N. Sci. Phila., II, 1872, p 155; * Jl. Acad. N. Sci. Phila., VIII, 1874, p. 30, pl. 1x, fig. 27; * Obs., XIII, 1874, p. 34, pl. 1x, fig. 27.— *B.H. Wrieut, Check List, 1888. Tellico River, Monroe County, Tennessee; Hast Tennessee. | PLEUROBEMA MEREDITHII Lea. *Unio meredithit Lea, Pr. Acad. N. Sci. Phila., II, 1858, p.40; *J1. Acad. N. Sci. Phila., V, 1862, p.65, pl. v1, fig. 214; *Obs., VIII, 1862, p. 69, pl. v, fig. 214.— *B.H. Wricut, Check List, 1888.—* PaTrEL, Conch. Sam., III, 1890, p. 159. *Margaron (Unio) meredithit LEA, Syn., 1870, p. 35. Tennessee River system; Black Warrior River, Alabama. + PLEUROBEMA LITA Lea. “Unio litus Lra, Pr. Acad. N. Sci. Phila., I, 1871, p. 189; *Jl. Acad. N. Sci. Phila., VIII, 1874, p. 17, pl. v, fig. 13; * Obs., XIII, 1874, p. 21, pl. v, fig. 13.—* B. H. Wrieut, Check List, 1888. Cahawba and Black Warrior rivers, Alabama. PLEUROBEMA GEORGIANA Lea. *Unio georgianus Lea, Pr. Am. Phil. Soc., II, 1841, p. 31;! *Tr. Am. Phil. Soc., VIII, 1842, p. 235, pl. xx1, fig. 49; *Obs., III, 1842, p. 73, pl. xx1, fig. 49.— * CONRAD, Pr. Acad. N. Sci. Phila., VI, 1853, p. 250.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 494.—* CuENu, Ill. Conch., 1858, pl. xx x11, figs. 3, 3a, 3b).—* B. H. Wrieut, Check List, 1888.—* PasrreL, Conch. Sam., III, 1890, p. 153. *Margaron ( Unio) georgianus LEA, Syn., 1852, p. 27; 1870, p. 42. Stump Creek, northwest Georgia. 'I have only seen a single specimen of this, the type, in bad condition, and I can not be certain where it belongs. 762 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. +t PLEUROBEMA PYRIFORMIS Lea. *Unio pyriformis Lea, Pr. Ac. N. Sci. Phila., IX, 1857, p. 31; * Jl. Ac. N. Sci. Phila., IV, 1858, p. 69, pl. xu, fig.50; *Obs., VI, 1858, p. 69, pl. x11, fig. 50.— *B. H. Wricut, Check List, 1888. *Margaron (Unio) pyriformis LEA, Syn., 1870, p. 40. Near Columbus, Georgia. + PLEUROBEMA MODICA Lea. *Unio modicus LEA, Pr. Acad. N. Sci. Phila., IX, 1857, p. 171; * Jl. Acad. N. Sci. Phila., IV, 1859, p. 204, pl. xxiv, fig. 86; *Obs., VII, 1860, p. 22, pl. xxtv, fig. 86.—* B. H. Wricut, Check J.ist, 1888. *Margaron (Unio) modicus Lra, Syn., 1870, p. 40. Chattahoochee River, Georgia. . +t PLEUROBEMA STRIATA Lea. *Unio striatus LEA, Pr. Am. Phil. Soc., I, 1840, p. 287; * Tr. Am. Phil. Soc., VIII, 1843, p. 203, pl. x11, fig. 16; *Obs., III, 1842, p. 41, pl. x11, fig. 16.—* ConraD, Pr. Acad. N. Sci. Phila., VI, 1853, p. 258.—* H. and A. ApAmMs, Gen. Rec. Moll., II, 1857, p. 496.—* CuENu, Il]. Conch., 1858, pl. xx1x, figs.1, la, 1b.—* B. H. WriGHT, Check List, 1888. *Margaron (Unio) striatus LEA, Syn., 1852, p. 26; 1870, p. 40. Chattahoochee River, Georgia. + PLEUROBEMA GIBBER Lea. * Unio gibber Lua, Tr. Am. Phil. Soe., VI, 1838, p- 34, pl. x, fig. 30; *Obs., IT, 1838, p. 35, pl. x, fig. 830.—* TRoscHEL, Arch. fur Naturg., V, 1839, Pt. 2, p. 236.— *HANLEY, Test. Moll., 1842, p. 185; * Biv. Shells, 1843, p. 185, pl. xx1, fig. 46.— *CaTLow and REEVE, Conch. Nom., 1845, p.59.—* CoNRaD, Pr. Acad. N. Sci. Phila., VI, 1853, p. 250.—* H. and A. ADAMS, Gen. Rec. Moll., I, 1857, p. 495.— *CHENU, III. Conch., 1858, pl. xx111, figs. 2, 2a, 2b.—* SOwERBY, Conch. Icon., XVI, 1866, pl. xt, fig. 219.—* B. H. Wricut, Check List, 1888. * Margarita (Unio) gibber LEA, Syn., 1836, p. 20; 1838, p. 17. *Margaron (Unio) gibber LEA, Syn., 1852, p. 24; 1870, p. 37. Caney Fork, Tennessee. +PLEUROBEMA FASSINANS Lea. * Unio fassinans LEA, Pr. Ac. N. Sci. Phila., XII, 1868, p. 143; *J1. Ac. N. Sci. Phila., VI, 1869, p. 305, pl. xivut, fig. 118; *Obs., XII, p. 65, pl. xLvu, fig. 118.—* B. H. WrieutT, Check List, 1888. *Margaron (Unio) fassinans LEA, Syn., 1870, p. 42. +PLEUROBEMA FASSINANS var. RHOMBOIDEA Simpson.! Upper Tennessee River drainage. 1A form of what I consider fassinans is abundant in the Clinch River, in western Virginia, which is considerably more rhomboid than the type and may be called var. rhomboidea. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 763 + PLEUROBEMA ARGENTEA Lea. *Unio argenteus Lua, Pr. Am. Phil. Soc., II, 1841, p.82; *Tr. Am. Phil. Soc.. VIII, 1843, p. 242, pl. xxv, fig.57; *Obs., III, 1842, p. 80, pl. xxv, fig. 57.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 245.—* CHENU, III. Conch., 1858, pl. xx xin, figs. 2, 2a, 2b.—H. and A. ApAMs, Gen. Rec. Moll., IH, 1857, p. 495.—* KusTEr, Conch. Cab. Unio, 1861, p. 188, pl. Lrx, fig. 4; 1861, p. 225, pl. LxxvI1, fig. 3.— * SowERBY, Conch. Icon., XVI, 1868, pl. Xxxvu, fig. 204.—* B. H. Wricurt, Check List, 1888.—* P«TEL, Conch. Sam., III, 1890, p. 145. *Margaron (Unio) argenteus LEa, Syn., 1852, p. 26; 1870, p. 40. Upper Tennessee River drainage. + PLEUROBEMA ARGENTEA var. PANNOSA Simpson. * Pleurobema argentea pannosa Simpson, Pr. Ac. N. Sci. Phila., 1900, p. 82. A solid, somewhat inflated, roughened form from Hot Springs, Arkan- sas, may be designated as above. Probably a valid species. +t PLEUROBEMA CONASAUGZENSIS Lea. *Unio conasaugensis LEA, Pr. Ac. N. Sci. Phila., II, 1872, p. 155.—*J1. Ac. N. Sei. Phila., VIII, 1874, p. 33, pl. x, fig.30; *Obs., XIII, 1874, p. 37, pl. x, fig. 30.— *B. H. WRiGHT, Check List, 1888. Upper Tennessee River drainage. t PLEUROBEMA BREVIS Lea. *Unio brevis Lea, Pr. Ac. N. Sci. Phila., II, 1872, p. 157; *Jl. Ac. N. Sci. Phila., VIII, 1874, p. 35, pl. xu, fig. 32; *Obs., XIII, 1874, p. 39, pl. xu, fig. 32.— *B. H. WricutT, Check List, 1888. Tennessee River system; Hardy, Arkansas. +PLEUROBEMA BREVIS var. SUBILLIPTICA Simpson. * Pleurobema brevis subilliptica SIMPSON, Pr. Ac. N. Sci. Phila., 1900, p. 80. A solid, inflated form from Hardy, Arkansas, may bear this name. It is probably a distinct species. + PLEUROBEMA PLANIOR Lea. *Unio planior Lea, Pr. Ac. N. Sci. Phila., XII, 1868, p. 145; *Jl. Ac. N. Sci. Phila., VI, 1869, p. 316, pl. L, fig. 129; *Obs., XII, 1869, p. 76, pl. L, fig. 129.— *B. H. Wricut, Check List, 1888. *Margaron (Unio) planior LEA, Syn., 1870, p. 35. Upper Tennessee River drainage. + PLEUROBEMA ESTABROOKIANA Lea. * Unio estabrookianus Lea, Pr. Am. Phil. Soc., IV, 1845, p. 164; *Tr. Am. Phil. Soc., X, 1853, p. 77, pl. v1, fig: 17; * Obs., IV, 1848, p.51, pl. vi, fig. 77.— *CoNRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 248.—*H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 495.—*B. H. Wriaut, Check List, 1888. *Margaron ( Unio) estabrookianus LEA, Syn., 1852, p. 24; 1870, p. 35. *Unio estabrokianus PHrTEL, Conch. Sam., III, 1890, p. 152. 764 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. *Unio striatissimus ANTHONY, Am. J]. Conch., I, p. 156, 1865, pl. xu, fig. 1.— *SOWERBY, Conch. Icon., XVI, 1868, pl. LXxxv1, fig. 460.--*PamTEL, Conch, Sam., III, 1890, p. 168. Upper Tennessee River drainage. Section PLETHOBASUS Simpson, 1900. (Type, Unio wsopus Green.) Shell large, irregularly oval, inflated, solid, somewhat suddenly swollen at the posterior base; posterior ridge low and rounded; beaks rather high near the anterior end, having a few strong ridges which are curved upward behind; a row of low, irregular tubercles extends from near the beaks to the post basal part of the valves; epidermis tawny brown in the younger shell, becoming darker with age; hinge plate solid, not flattened; pseudocardinals triangular, rough; cavity of the beaks not deep; front part of the shell very heavy; hinder part much thinner. Animal having the mantle somewhat toothed posteriorly; branchial and anal openings large, the latter smooth or with very faint papille; inner gills the larger, rounded below, free nearly or quite their whole length from the abdominal sac; marsupium occupying the entire outer gills.' + PLEUROBEMA ASOPUS Green. *Unio asopus GREEN, Cont. Mac. Lyceum, I, No, 2, 1827, p. 46, fig. 3.—* HANLEY, Test. Moll., 1842, p. 181; * Biv. Shells, 1843, p. 181, pl. xxiv, fig. 7.—* Cat- LOW and REEVE, Conch. Nom., 1845, p. 551.—*H. and A. ADAMs, Gen. Rec. Moll., I, 1857, p. 496.—* CALKINS, Proc. Ottawa Acad. N. Sci., 1874, p. 41.— *CaLL, J]. Cinti. Soc. N. H., XVIII, 1896, p. 157, pl. v1. * Margarita (Unio) wsopus LEA, Syn., 1836, p. 17; 1838, p. 16. * Margaron (Unio) wsopus LEA, Syn., 1852, p. 23; 1870, p. 34. *Unio cyphia CONRAD, New F. W. Shells, 1834, p 68.—*FERUSSAC, Guer. Mag., 1835, p. 27. *Unio cyphius Say, Am. Conch., VI, 1834.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 248.—* REEVE, Conch. Icon., XVI, 1864, pl. v111, fig. 28. * Unio cyphias var. wsopus PATEL, Conch. Sam., III, 1890, p. 150. * Unio scyphius KUSTER, Conch, Cab. Unio, 1861, p. 181, pl. Lv11, fig. 2. Ohio, Cumberland, and Tennessee river systems; west to Missouri and Minnesota; Alabama River, according to Call. 1T am not positive as to the generic position of the two following species, but I am inclined to place them in Pleurobema. No other living species of this genus has any development of tubercles, but a great number of fossil forms from the Tertiary of eastern Europe which seem to be most like Pleurotema are decidedly pustulous. The heavy, inflated, high beaks and the comparatively shallow beak cavities are characters found in all the species of this genus. In the single gravid specimen I examined (one out of a large number from different localities) the outer gills were not filled very full of ova, though they were found throughout their extent, while the most careful search did not disclose any in the inner gills. NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 165 + PLEUROBEMA CICATRICOSA Say. “Unio varicosus LEA, Tr. Am. Phil. Soc., 1V, 1829, p. 90, pl. x1, fig. 20;! * Obs., I, 1834, p. 100, pl. x1, fig. 20.—* HANLEY, Test. Moll., 1842, p. 181; * Biv. Shells, 1843, p. 181, pl. x x1, fig. 14.—*CatTLaw and REEVE, Conch. Nom., 1845, p. 65.— *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 496.—*CHENu, II]. Conch., 1858, pl. x1, figs. 6, 6a, 6b.—* B. H. Wricut, Check List, 1888. * Margarita (Unio) varicosus Lra, Syn., 1836, p.17; 1838, p. 16. * Margaron ( Unio) varicosus Lea, Syn., 1852, p. 23; 1870, p. 34. * Unio cicatricosus Say, N. Harmony Diss., II, No. 19, 1829, p. 292—*Say, Am. Conch., VI, 1834.—* FERussac, Guer. Mag., 1835, p. 28.—*L. W. Say, Terr. and Fluv. Shells, 1840, p. 5.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 246.—* KusTER, Conch. Cab. Unio, 1861, p. 185, pl. Lv, fig. 2.—* REEVE, Conch. Icon., XVI, 1864, pl. vii, fig. 31; xu, fig. 50.—*B. H. Wrieut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 148. * Unio cicatricosus var. varicosus P&TEL, Conch. Sam., III, 1890, p. 148. Ohio River; Tennessee; Claiborne, Alabama. The last locality I con- sider doubtful. Lea gives St. Paul, Minnesota, as a habitat, but I do not think it possibly can be. The following species are described by Rafinesque, but I am unable to make them out. * Pleurobema mytiloides RAFINESQUE, Ann. Gen. Sci. Brux., V, 1820, p. 313, pl. LXxxUl, figs. 8-10. *Pleurobema cuneata RAFINESQUE, Ann. Gen. Sci. Brux., V, 1820, p. 313. TETRAGENE2. Male and female shells alike, solid; beak sculpture consisting of coarse, Subparallel ridges; beak cavities deep; marsupium filling all four gills, smooth, pad-like. Genus QUADRULA (Rafinesque, 1820) Agassiz. (Type, Quadrula metanevra Rafinesque. ) Quadrula RAFINESQUE, Ann. Gen. Sci. Phys. Brux., 1820, p. 305. Kotundaria AGassiz, Arch. fiir Naturg, 1852, p. 48. Orthonymus AGassiz, Arch. fiir Naturg, 1852, p. 48. Shell triangular, quadrate or rhomboid, solid, inflated, with rather prominent beaks, which are generally sculptured with a few coarse, irregular, subparallel ridges that are inflated where they cross the posterior ridge; posterior ridge ordinarily well developed; base often incurved in old specimens; disks sculptured or smooth; epidermis usually dull colored, dark and rayless, or feebly rayed; hinge plate 'T change Lea’s name because Lamarck previously applied the name Unio varicosa to what is, no doubt, Alasmidonta marginata. Mr. T. G. Lea, of Cincinnati, took many specimens of this species, the shells of which he sent to Dr. Lea, and in several of them he has written in pencil “(not charged” or ‘ovaries charged,” with the date, but neither of them seems to have described the animal. I am somewhat ata loss to know where to place this curious form. The young are much like those of Quadrula solida, and do not show the swellings until the third or fourth year, and occasionally the adult shell is nearly smooth, 7166 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. heavy, wide, flattened; pseudocardinals solid, direct, ragged; laterals double in the left and single in the right alee, often with a small secondary lateral below the large one in the right valve; cavity of the beaks deep and compressed; dorsal scars under the hinge plate; male and female shells alike. Animal having the inner gills the lereer! generally se from the abdominal sac the greater part or all of their length; marsupium occupying all four of the gills throughout, the whole Seno ola and pad- like. Section CRENODONTA Schluter.1 (Type, Unio plicatus Say.) Shell more or less alate; beaks prominent; the surface of the valves usually sculptured with oblique folds; posterior slope generally having smaller radial plications which curve upward behind; epidermis brown- ish or blackish; anterior muscle scars large, distinct, very shallow, the anterior edge smooth, the rest apparently filled with roughened Shelly matter; posterior scars large, shallow, indistinct; escutcheon large and dark. Animal with the gills generally large, rounded below; inner the larger, usually free nearly or quite the entire length of the abdominal sac,” the two pairs united to the mantle nearly but not quite to the posterior end, having a small portion free; marsupium occupying all the four eens hea forming very heavy, thick a labial palpi usually large. (Group of Quadrula plicata.) Shell rounded to subrhomboid; plications usually strong, oblique, though in occasional specimens the surface may be perfectly plane or slightly concentrically sculptured. 'Schliiter applied the name Crenodonta (Verz. meiner Conch., 1836, p. 33) to a group of Unionidz, the first species of which was the Unio plicatus of Say, but he gave no description of his group and did not designate a type. In 1853 Mérch (Yoldi cata- logue, p. 45) used this name without a description or a type, and it has been applied to the plicate Uniones by von Martens (Biologia Centrali-Americana, Mollusca, 1900, p. 479). 2Dr. Lea found in Quadrula multiplicata the inner gills generally nearly or entirely free, but in certain specimens they were wholly united. My own experience in exam- ining the animals of this species exactly coincides with his, thus showing that the character of the union of the inner gills with the abdominal sac, or their separation from it, is not a generic character, as Agassiz believed, nor is it even of specific value. Although I have examined thousands of animals belonging to the Plicata group of the genus Quadrula, taken at various seasons and throughout almost the entire range of the assemblage and of nearly all the species, I have never seen a speci- men with ova or embryos in the gills save one in the alcoholic collection of Dr. Lea in the Academy of Natural Sciences at Philadelphia. Other students of the Union- ide have found these species equally barren. It is probable that they breed only at long intervals but in enormous numbers, a supposition strengthened by the fact that Dr. Lea found about 6,000,000 young in the gills of a single Unio multiplicatus. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 167 tQUADRULA PLICATA Say. * Unio plicata Say,' Nich. Encye., II, 1816, pl. 11, fig. 1. *Unio (Theliderma) plicata SwAInson, Tr. on Mal., 1840, p. 271, fig. 54e. *Mya plicata Eaton, Zool. Text-Book, 1826, p. 219. *Quadrula plicata BAKER, Moll. Chicago, Pt. 1, 1898, pl. xxv, fig. 1. *Unio plicatus HitpreTH (?), Am. Jl. Sci., XIV, 1828, p. 280.°—SHor?’ and Eaton, Transylvania J]., 1831, p. 74.—*Conrap, New F. W. Shells, 1834, p. 71.—* Say, Am. Conch., VI, 1834.—*FERussAc, Guer. Mag., 1835,p. 27.— *“HANLEY, Test. Moll, 1842, p. 175; *Biv. Shells, 1843, p.175, pl. xx, fig. 21.—* CaTLow and REEVE, Conch. Nom., 1845, p. 63.—* KusrEr, Conch. Cab. Unio, 1856, p. 187, pl. xu, fig. 3.—* H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 498.—* REEVE, Conch. Icon., XVI, 1864, pl. 11, fig. 5.—* B. H. Wriaut, Check List, 1888.—*PaTEL, Conch. Sam., IIT, 1890, p. 163. *Margarita (Unio) plicatus LEA, Syn., 1836, p. 12; 1838, p. 14. *Margaron (Unio) plicatus Lra, Syn., 1852, p. 20; 1870, p. 30. *Plectomerus plicatus CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 261. *Unio peruviana LAMARCK, An. sans Vert., VI, 1819, p. 71.°—* DESHAYEs, An. sans Vert., 2d ed., VI, 1835, p. 533; 3d ed., II, 1839, p. 667. *Unio crassus BARNES, Am. Jl. Sci., VI, 1823, p. 118. *Unio rariplicata DESHAYES, Enc. Méth., II, 1830, p. 578; *An.sans Vert., 2d ed., VI, 1835, p. 533; 3d ed., II, 1839, p. 667. *Unio giganteus LEA, Obs., II, 1838, p. 35.4 *Unio heros KUSTER, Conch. Cab. Unio, 1856, p. 136, pl. x1, figs. 1, 2. + UNIO PLICATA var. HIPPOPAEA Lea. “Unio hippopeus LEA,’ Pr. Am. Phil. Soc., IV, 1845, p. 163; *Tr. Am. Phil. Soc., X, 1848, p. 67, pl. 1, fig. 1; *Obs., IV, 1848, p. 41, pl. 1, fig. 1.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 497.—* KustTER, Conch. Cab., 1861, p. 251, pl. LXXxIv, fig. 3.—* REEVE, Conch. Icon., XVI, 1864, pl. x1, fig. 40.— *B. H. Wricut, Check List, 1888. *Margaron (Unio) hippopeus Lea, Syn., 1852, p. 21; 1870, p. 31. * Unio hippopwus Pa&TEL, Conch. Sam., III, 1890, p. 155. Upper Mississippi drainage area south to the Tennessee and Arkansas rivers; Red River of the North; Saskatchewan River; Lake Winni- peg; western Michigan. The variety in eastern Michigan and Lake Erie. +QUADRULA PERPLICATA Conrad. “Unio perplicatus CONRAD, Pr. Ac. N. Sci. Phila., I, 1841, p. 19; *Jl. Ac. N. Sei. Phila, Ville 18425 ys Wiese 1850, 9p. 216) ple XXexavl. fig 2. He and “A 1Say says: ‘It was found by Mr. Lesueur in Lake Erie, and was communicated by him under the above name.” As there is no evidence that Lesueur described the species, and as Say was the one to first properly characterize it, I believe that he must be credited with it. Referred to figure 5, but this with a number of other figures in this paper were left out by the editor. > Lea, who examined Lamarck’s types and collection, states that this is the same as Say’s plicata. ‘Dr. Lea does not describe this, but only states that it is in Dr. Mitchell’s collec- tion. Probably it has never been described. SApparently a stunted variety of Quadrula plicata. Dr. Lea’s specimens show a great diversity of characters. 768 PROCEEDINGS OF THE NATIONAL MUSEUM. Hoh, EE Apams, Gen. Rec. Moll., II, 1857, p. 498.—* REEVE, Conch. Icon., XVI, 1864, pl. 1x, fig. 35.—* B. H. Wricut, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 163. *Margaron (Unio) perplicatus LEA, Syn., 1852, p. 20; 1870, p. 29. *Plectomerus perplicatus CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 261. t * Unio atrocostatus Lna, Tr. Am. Phil. Soc., X, 1848, p. 70, pl. 11, fig. 5;' * Obs., IV, 1848, p. 44, pl. ny, fig. 5.—*H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 497.—* B. H. Wricut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 145. * Margaron (Unio) atrocostatus LEA, Syn., 1852, p. 20; 1870, p. 29. t* Unio pearlensis CONRAD, Tr. Am. Phil. Soc., VII, 1855, p. 256.2—* REEVE, Conch. Icon., XVI, 1864, pl. x1, fig. 42. * Unio perlensis P#&TEL, Conch. Sam., III, 1890, p. 163. t* Unio brazosensis LEA, Pr. Ac. N. Sci. Phila., XII, 1868, p.144;3 * Jl. Ac. N. Sci. Phila., VI, 1869, p. 309, pl. xLviu, fig. 122; * Obs., XII, 1869, p. 69, pl. xLv1mI, fig. 122.—* B. H. Wrieut, Check List, 1888. *Margaron (Unio) brazosensis LEA, Syn., 1870, p. 31. t* Unio lincecumit Lma, Pr. Ac. N. Sci. Phila., XII, 1868, p. 144; *Jl. Ac. N. Sci. Phila., VI, 1869, p. 312, pl. xurx, fig. 125; * Obs., XII, 1869, p. 72, pl. xu1x, fig. 125.—* B. H. Wricut, Check List, 1888. * Margaron (Unio) lincecumii LEa, Syn., 1870, p. 31. * Unio lincecurit P®TEL, Conch. Sam., III, 1890, p. 157.4 t* Unio pauciplicatus Lea, Pr. Ac. N. Sci. Phila., II, 1872, p. 156; * Jl. Ac. N. Sci. Phila., VIII, 1874, p. 29, pl. rx, fig. 26; *Obs., XIII, 1874, p. 33, pl. rx, fig. 26.—* B. H. Wricut, Check List, 1888. +QUADRULA PERPLICATA var. QUINTARDII Cragin.’ *Unio quintardit CRAGIN, Bull. Washb. Coilege, II, 1887, p.6.—* PILsBRY, Pr. Ac. N. Sci. Phila., 1892, p. 131, pl. vu, figs. 1-3.—* B. H.Wrieut, Check List, 1888. Alabama River drainage and streams flowing into the Gulf of Mexico west to central Texas, north to southern Kansas. tQUADRULA ELLIOTTII Lea.® *Unio elliottit Lea, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 262; *J1. Ac. N. Sci. Phila.; IV, 1858, p. 54, pl. vu, fig. 37; *Obs., VI, 1858, p. 54, pl. vu, fig. 1This seems to be merely a form of perplicata, with a rather rude growth and roughened epidermis. 2A comparatively smooth form of perplicatus, according to the type. 3 Another smooth form of perplicatus. 4The above is a fair sampie of Peetel’s orthography throughout his work. 5A right valve of the type was kindly loaned to the writer by Mr. Quintard. It is a rather light brown, glossy shell, and is sculptured with a series of j-shaped markings on the disk. Otherwise it is generally like Q. perplicatus. I have seen the @. wndulata and one or two other species of this group break from the ordinary oblique bars into these peculiar markings, and I am quite sure that in this case the same thing has happened to Q. perplicata. 6Dr. Lea first called this Unio atrocostatus, and then wrote in one of his duplicates Unio elliottii. He says that it is very near to U. perplicatus Conrad, but that the young of his species have a yellow stain on the posterior part of the nacre not found on any other species. I have, however, found it on young atrocostatus in his collec- tion. I am strongly inclined to believe that the elliottii is only a peculiar, vigorous variety of perplicata, but do not feel quite certain of it, and so let it go as a species with doubt, No. 1205. SYNOPSIS OF THE NAIA DES—SIMPSON. 7169 37.—* REEVE,Conch. Icon., XVI, 1864, pl. v, fig. 20.—* B. H. Wrigut, Check List, 1888. * Margaron (Unio) elliottit LEA, Syn., 1870, p. 29. Southern Georgia to Texas. +QUADRULA UNDULATA Barnes. *Unio undulatus BARNES, Am. J1. Sci., VI, 1823, p. 120, pl. 11.—* HILDRETH, Am. Jl. Sci., XIV, 1828, p. 279.—* HantEy, Test. Moll., 1842, p.175; * Biv. Shells, 1843, p. 175, pl. xx, fig. 26.—* CaTLow and REEVE, Conch. Nom., 1845, p. 65.—* CHENU, Bib. Conch., 1st ser., III, 1845, p. 24, pl. v, figs. 1, la.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 495.—* CHENU, Manual, 1859, II, p. 143, fig. 704.—* SowERBY, Conch. Icon., XVI, 1868, pl. Lxxv1, fig. 399. —* CaLk- Ins, Pr. Ottawa Acad. Sci., 1874, p. 45.—* B. H. Wricut, Check List, 1888. *Margarita (Unio) undulatus Lea, Syn., 1836, p. 12; 1838, p. 14. *Margaron (Unio) undulatus LEA, Syn., 1852, p. 20; 1870, p. 29. * Mya undulata EATON, Zool. Text-Book, 1826, p. 219. *Unio undulata VALENCIENNES, Rec. Obs. Zool. Anat., II, 1833, p. 229, pl. trv, figs. 3, 3a, 3b.—* DESHAYES, Tr. Elem. Conch., 1839, p. 19, pl. xxx, figs. 8, 9. *Quadrula undulata BAKER, Moll. Chicago, Pt. I, 1898, p. 82, pl. xxun, figs. 1, 2; IU ike I *Unio costatus Say, Am. Conch., VI, 1834.—* Conrap, New F. W. Shells, 1834, p. 68.—* FErussac, Guer. Mag., 1835, p. 27.—* CONRAD, Monog., II, 1836, p. 17, pl. vu.—* Kuster, Conch. Cab., 1852, p. 54, pl. x1, fig. 4. —* REEVE, Conch. icon., XVI, 1864, pl. 1v, fig. 16. *Plectomerus costatus CONRAD, Pr. Acad. N. Sci. Phila., VI, 1853, p. 260. *Unio plicatus KUSTER, Conch. Cab., 1856, p. 137, pl. xu, fig. 3.—* CHENU, Manual, 1859, II, p. 148, fig. 706. *Unio atrocostatus SOWERBY, Conch. Icon., XVI, 1868, pl. Lxxvut, fig. 404. + QUADRULA UNDULATA var. LATECOSTATA Lea. *Unio latecostatus Lea, Pr. Am. Phil. Soc., IV, 1845, p. 163;! *Tr. Am. Phil. Soc., X, 1848, p. 68, pl. 1, fig. 2; * Obs., IV, 1848, p. 42, pl. 1, fig. 2.—* Kusrmr, Conch. Cab., 1861, p. 251, pl. Lxxxtv, fig. 4.—* B. H. Wricut, Check List, 1888. *Margaron (Unio) laticostasus LEA, Syn., 1852, p. 21. *Margaron (Unio) laticostatus LEA, Syn., 1870, p. 31. *Unio laticostatus H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 497.—* P =TEL, Conch. Sam., IIT, 1890, p. 156. fQUADRULA UNDULATA var. PILSBRYI Marsh. *Unio pilsbryi MARSH, Nautilus, V, 1891, p. 1.2—* Pitssry, Pr. Ac. N. Sci. Phila., 1892, p. 131, pl. vim, figs.'7, 8; *Nautilus, VII, 1893, pl. 1, figs. 7, 8.3 1 More compressed and having finer, more delicate plications than the type. I have traced it northward into Kansas, where it gradually assumes the ordinary form of undulata. Occasional specimens are found in the Northern States which agree very well with the typical latecostata. J feel quite sure that this is only a peculiar variety of wndulata. SA peculiar shell belonging to Mr. J. H. Ferriss, of Joliet, Illinois, from Lake Win- nipeg, has been examined by the writer. It has unusually strong growth lines and is quite full in the ventral region, and has only the very faintest vestiges of plica- tions below the lower part of the posterior ridge. J regard it as a smooth form of Q. undulata, and if any considerable number of such specimens were found it might be worthy of a varietal name. Proce. N. M.:vol. xxii 49 770 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Mississippi basin generally; St. Lawrence drainage; Red River of the North; Lake Winnipeg; Alabama River system; SOMIUESy to west- ern Texas, the varieties in fie southwestern area. QUADRULA DIGITATA Morelet. *Unio digitatus MORELET, Test. Noviss., Pt. 2, 1851, p. 24.—* B. H. WRIGHT, Check List, 1888.—* FIscHER and Cross, Miss. Sci., Pt. 7, II, 1894, p. 563, pl. Lx, fig. 1. Rio Usumacinta, Guatemala. + QUADRULA TRIUMPHANS B. H. Wright. *Unio triumphans B. H. Wriaut, Nautilus, XI, 1898, p. 101. *Ouadrula triumphans Simpson, Pr. Ac. N. Sei. Phila., 1900, p. 83, ak Ill, fig 3. Coosa River, St. Clair County, Alabama. + QUADRULA BOYKINIANA Lea. * Unio boykinianus LEA, Pr. Am. Phil. Soc., I, 1840, p. 288; *Tr. Am. Phil. Soc., VIII, 1812, p. 208, pl. xu, fig. 22; * Obs., III, 1842, p. 46, pl. x1, fig, 22.— = *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 498.—* CHENU, Ill. Conch., 1858, pl. xxvul, figs. 2, 2a, 2b.—* Kuster, Conch. Cab., 1861, p. 181, pl. LVI, ie, « SOWERBY, Conch. Icon., XVI, 1868, pl. 1, fig. 1.—*B. H. WRIGHT, Check List, 1888.--* P2&TEL, Conch! Sam., III, 1890, p. 146. *Margaron (Unio) boykinianus LEA, Syn., 1852, p. 19; 1870, p. 28. * Plectomerus boykinianus CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 260. * Unio baykinianus Pa TEL, Conch. Sam., III, 1890, p. 145. Chattahoochee River system; Claiborne, Alabama; Pine Barren Creek, Escambia County, Florida. +t QUADRULA HEROS Say.! Unio heros Say, New Harm. Diss., II, No. 19, 1829, p. 291; *Am. Conch., VI, 1834, (part).—* ConrAaD, New F. W. Shells, 1834, p. 69—*FERuSsAc, Guer. Mag., 1835, p. 27.—* ConraD, Monog., XII, 1840, p. 107, pl. Lrxx.—* HANLEY, Test. Moll., 1842, p. 175; * Biv. Shells, 1843, p. 175, pl. xx, fig. 28.—* B. H. WricutT, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 155. * Unio heros var. multiplicatus PaTEL, Conch, Sam., III, 1890, p. 155. * Unio undulatus Say, Am. Conch., I, 1831, pl. xvi (April). t* Unio multiplicatus Lesa, Tr. Am. Phil. Soc., IV, 1831, p. 70, pl. Iv, fig. 2 datter part of the year); *Obs., I, 1834, p. 80, pl. Iv, fig. 2.—* PoTIEZ and Mr- CHAUD, Gall. Moll., 1844, p. 155, pl. L1x, fig. 1.—* H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 498.—* CHENv, Il. Conch., 1858, pl. 1x, figs. 2, 2a, 2b; *Manual, 1859, II, p. 143, fig. 703.—* CaLKINS, Pr. Ottawa Acad. Sci., 1874, p. 43.—* B. H. Wrient, Check List, 1888. 1There has been some dispute as to what name should be applied to the above species. In 1829 Say fully described in the New Harmony Disseminator a species which he called Unio heros, but didnot figure it. Later in the American Conchology he placed it in the synonymy of Unio undulatus Barnes, though the figure which he gives as undulatus in that work and to which his description refers is plainly not Barnes’s species, but the heros described in the Disseminator. In 1831 Dr. Lea described Say’s species as Unio multiplicatus. Notwithstanding the fact that Say placed his own species in the synonymy, it is perfectly distinct and was properly characterized in his description, and his name will have to take the place of the bet- ter Known one of Dr. Lea. , NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. POT (a t* Margarita (Unio) multiplicatus Lea, Syn., 1836, p. 12; 1838, p. 14. *Margaron ( Unio) multiplicatus LEA, Syn., 1852, p. 20; 1870, p. 29. t * Unio eightsii Lea, Pr. Ac. N. Sci. Phila., IV, 1860, p. 306; *J1. Ac. N. Sci. Phila., IV, 1860, p. 367, pl. LxIv, fig. 192; *Obs., VIII, 1860, p. 49, pl. Lx1v, fig. 192.— *B. H. Wriauat, Check List, 1888.—* Fiscurer and Crosse, Miss. Sci., Pt. 7, II, 1894, p. 504. *Margaron (Unio) eightsit Lea, Syn., 1870, p. 29. * Unio eighti PaTEL, Conch. Sam., III, 1890, p. 151. *Unio atrocostatus REEVE, Conch. Icon., XVI, 1864, pl. 1v, fig. 18: (Changer in Errata to Unio heros.) Mississippi River system generally; Red River of the North; Tom- bigbee River, Alabama; southwest to New Leon, Mexico. +QUADRULA NICKLINIANA Lea. *Unio nicklinianus Lea, Tr. Am. Phil. Soc., V, 1834, p. 28, pl. 1, fig. 1; *Obs., 1,1834, p. 140, pl. 1, fig. 1.—* HANLEY, Test. Moll., 1842, p.175; ~ Biv. Shells, 1843, p. 175, pl. xxi, fig. 52.—*CaTLow and REEVE, Conch. Nom., 1845, p. 61.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 498.—*SowrErBy, Conch. Icon., XVI, 1866, pl. 1m, fig. 276.—*B. H. Wrient, Check List, 1888.—* FiscHER and Cross¥, Miss. Sci., Pt. 7, II, 1894, p. 565. * Margarita (Unio) nicklinianus Lea, Syn., 1836, p. 12; 1838, p. 14. * Margaron (Unio) nicklinianus LEA, Syn., 1852, p. 19; 1870, p. 28. * Plectomerus nicklinianus CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 261. * Unio nicklianus KusTER, Conch. Cab., 1861, p. 218, pl. LX XIII, fig. 3.—* PaTEL, Conch. Sam., III, 1890, p. 161. Mexico; Guatemala. +QUADRULA STOLLI von Martens. t Unio stolli VON MARTENS, Biol. Centrali-Amer., Mollusea, 1900, p. 492, pl. xx1x, fig. 2. Rio de las Salinas, Guatemala; Moctezuma River Central America?! +QUADRULA NEISLERII Lea. *Unio neislertti Lea, Pr. Ac. N. Sci. Phila., II, 1858, p. 165; * Jl. Ac. N. Sci. Phila., TV, 1859, p. 212, pl. xxvi, fig. 93; *Obs., VII, 1859, p. 30, pl. xxv1, fig. 93.— *B. H. WriauT, Check List, 1888. *Margaron (Unio) neisleriti LEA, Syn., 1870, p. 29. Flint River and Macon, Georgia. 'Very close to Quadrula nickliniana Lea, According to von Martens in the above citation the Unio nickliana of Kuster (Conch. Cab. Unio, new ed., p. 218, pl. Lx x1, fig. 3) is not the nicklinianus of Lea, but a new species which he calls Unio stolli. I can not agree with him, as it seems to me that Kuster’s figure represents Lea’s species very well. The figure and description of U. stolli given by von Martens rep- resent a more elongated and more plicate shell than the typical nicklinianus of Lea, but Iam doubtful whether it is distinct. Lea’s shells of both forms are mostly from the Moctezuma River, which is in Central America according to Lea, but the only river of that name I can find is in New Leon, Mexico. Part of von Martens’ work describing the Unionidz of Central America has been received as the Synopsis is going through the press, and for the most part too late to avail myself of the large amount of valuable information it contains. CUD PROCEEDINGS OF THE NATIONAL MUSEUM. VoL. XX. (Group of Quadrula trapezoides.) Shell rhomboid, inflated, with a high posterior ridge; beak sculpture coarse, irregular corrugations swollen to nodules on the posterior ridge; surface sculptured on posterior half with oblique ridges, which are sometimes corrugated, and with strong corrugations on post slope beak cavities only moderately deep; nacre purple. Animal with the gills slightly rounded below, inner the larger throughout, free from the abdominal sac; palpi enormous, long; branchial opening very large, finely papillose; anal opening with fine papille or crenulations. + QUADRULA TRAPEZOIDES Lea.! * Unio crassidens var. a, LAMARCK, An. sans Vert., VI, 1819, p. 71.2 *Plectomerus crassidens var. a, CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 261. *Unio trapezoides Lua, Tr. Am. Phil. Soc., IV, 1831, p. 69, pl. 1m, fig. 1; * Obs., I, 1834, p. 79, pl. 111, fig. 1.—* Conrap, New F. W. Shells, 1834, p. 72 —* FER- ussaAc, Guer. Mag., 1835, p. 27.—* Haney, Test. Moll., 1842, p. 176; * Biv. Shells, 1843, p. 176, pl. xxu1, fig. 29.—* CaTLow and REEVE, Conch. Nom., 1815, p. 64.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 497.—* CHENU, Ill. Conch., 1858, pl. x, figs. 2, 2a, 2b; Manual, 1859, II, p. 142, fig. 699.— * KusTER, Conch. Cab., 1862, p. 274, pl. xcu, fig. 2.—* REEVE, Conch. Icon., XVI, 1864, pl. v, fig. 17.—*B. H. Wrigut, Check List, 1888.—* PaTEL Conch. Sam., IIi, 1890, p. 169. * Margarita (Unio) trapezoides LEA, Syn., 1836; p. 12; 1838, p. 14. * Margaron (Unio) trapezoides LEA, Syn., 1852, p. 21; 1870, p. 31. Unio interruptus Say, Transylvania Journal, IV, 1831, p. 525; *Am. Conch., IV, 1832, pl. xxxiu, VI, 1834.—* FeRussac, Guer. Mag., 1835, p. 28.—* DESHAYES, An. sans. Vert., 2d ed., VI, 1835, p. 556; 3d ed., II, 1839, p. 675.—* TROSCHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 234.—* CHENU, Bib. Conch., Ist ser., III, 1845, p. 45, pl. xvii, figs. 1-3. *“Unio dombeyana VALENCIENNES, Rec. Obs. Zool., II, 1833, p. 227, pl. L111, figs. iL, tka, It, Streams flowing into the Gulf of Mexico, from the Alabama River west to eastern Texas; northward in the Mississippi system to north- west Tennessee. 1In 1820 Rafinesque applied the name interrupta to some, to me, unknown Unio, in Ann. Gen. Sci. Phys. Brux., but as he placed his species in the subgenus Plagiola of | the genus Obliquaria and not in Unio at all, it does not have priority in the latter genus. In 1831 (December, according to Dr. Lea) Say described in the Transyl- vania Journal the species which Dr. Lea called Unio trapezoides as Unio interruptus. In the latter part of the same year (I am unable to ascertain the exact date) Dr. Lea published his name in the Transactions of the American Philosophical Society. As I have found it impossible to determine which name was actually published first I have used the better known—that of Dr. Lea. 2This is Unio trapezoides Lea according to Lea, who examined the Lamarckian types. See Synopsis, 4th ed., p. 37, footnote. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 183 Section QUADRULA (Rafinesque, 1820) Agassiz. (Type, Unio cylindricus Say.) Shell rhomboid; surface pustulous, with a high, rounded, or sharp posterior ridge; epidermis generally smooth and bright. (Group of Quadrula metanevra.) Shell quadrate or rhomboid, with a wide, rounded posterior ridge, above which, on the posterior slope is a decided radial furrow; whole surface except the anterior end generally pustulous, the sculpture of the posterior slope being often wrinkled; umbonal region high; epi- dermis shining, usually painted with a beautiful pattern of triangular spots, and sometimes chevron-shaped lines; hinge strong, the secondary lateral in right valve rather feeble, but there is often a faint third lat- eral above; cavity of the beaks deep and compressed. Animal with the marsupium filling all four leaves of the branchie, the ova giving it a purplish tint; inner gills free from the abdominal sac for the greater part of their length; mantle bordered with black; branchial opening opposite the lobe of the shell, extending well on to its base; anal opening without papille. tQUADRULA CYLINDRICA Say. *Unio cylindricus Say, Nich. Encyc., II, 1816, pl. 1v, fig. 3.—* H1LpretTH, Am. Jl. Sci., XIV, 1828, p. 283, figs. 13, 13b.—* SHorr and Eaton, Transylvania Jl., 1831, p. 76.—* Say, Am. Conch., VI, 1834.—* Conrapb, New F. W. Shells, 1834, p. 68.—* Ferussac, Guer. Mag., 1835, p. 27.—*HANLEY, Test. Moll., 1842, p. 182; *Biv. Shells, 1843, p. 182, pl. xx, fig. 31—*CaTLow and REEVE, Conch. Nom., 1845, p. 58.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 248.— *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 496.—* Kustmr, Conch. Cab. Unio, 1861, p. 194, pl. Lx, figs. 1, 2.—*SowerErBy, Conch. Icon., XVI, 1867, pl. Lx, fig. 300.—* B. H. Wriaut, Check List, 1888.—* PareL, Conch. Sam., III, 1890, p. 150.—* Cau. Tr. Acad. Sci. St. Louis, VII, 1895, p. 15, pl. x1. * Margarita (Unio) cylindricus Lea, Syn., 1836, p. 17; 1838, p. 16. * Margaron (Unio) cylindricus LEA, Syn., 1852, p. 23; 1870, p. 35. * Orthonymus cylindricus AGassiz, Arch. fiir. Naturg., I, 1852, p. 48. * Mya cylindrica EATON, Zool. Text-Book, 1826, p. 219. * Unio (Theliderma) cylindrica SwAINsON, Treat. on Mal., 1840, p. 271, fig. 54e. * Unio (Hurynia) solenoides var. cylindrica RAFINESQUE, Aun. Gen. Sci. Phys. Brux., V, 1820, p. 298. * Unio naviformis LAMARCK, An. sans Vert., VI, 1819, p. 75.—* DESHAYES, Encye. Méth., II, 1830, p.580.—* VALENCIENNES, Rec. Obs. Zool., II, 1833, p. 233, pl. Liu, fig. 4.—* DesHayYEs, An.sans Vert., 2d ed., VI, 1835, p. 5387; 3d ed., II, 1839, p. 669.—*ANTON, Verz. der. Conch., 1839, p. 14.—* REEVE, Conch. Syst., 1841, p. 118, pl. LXxxIx, fig. 7.! * Unio rugosus CHENU, Man., 1859, II, p. 188, fig. 668. Entire Ohio, Cumberland, and Tennessee river systems; west to Nebraska (Aughey, doubtful); south to Arkansas and Indian Territory. Mr. B. H. Wright, Nautilus, XII, 1898, p, 6, has made a var. strigillatus of a com- pressed, very rough form of cylindrica. ‘There seems to me to be an absolute grada- tion from cylindrical, nearly smooth specimens to this form. ee PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. +QUADRULA METANEVRA Rafinesque. * Obliquaria (Quadrula) metanevra RAFINESQUE, Ann. Gen. Sci. Brux., V, 1820, p. 305, pl. LXxXxI, figs. 15, 16.'—* CHENU, Bib. Conch., Ist ser., III, 1845, p. 18, pl. u, figs. 15, 16. “Unio (Theliderma) metanevra SWAINSON, Treat. on Mal., 1840, p. 268, figs. 50, 546. *Unio metanever SHORT and Eaton, Transylvania J1., 1831, p. 76.—* CoNnRaD, New F.W. Shells, 1834, p. 70.—* HAaNLeEy, Test. Moll., 1842, p. 179; * Biv. Shells, 1843, p. 179, pl. xx1, fig. 31.—*Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 252.—*REEvE, Conch. Icon., XVI, 1864, pl. VII, fig. 25.—* PATEL, Conch. Sam., III, 1890, p. 159. * Margarita (Unio) metanever LEA, Syn., 1836, p. 15; 1838, p. 15. *Unio metanevrus Say, Am. Conch., VI, 1834.—* FERuSSAC, Guer. Mag., 1835, p. 27.—* ConraD, Monog., I, 1835, p. 10, pl. v, fig. 2.—* H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 497.—* CALKINS, Pr. Ottawa Ac. N. Sci., 1874, p. 43.— *B. H. Wricut, Check List, 1888.—CaLL, Tr. Acad. N. Sci. St. Louis, VII, 1895, p. 28, pl. x. * Margaron (Unio) metanevrus LEA, Syn., 1852, p. 22; 1870, p. 33. *Unio metaniver CATLOW and REEVE, Conch. Nom., 1845, p. 61. *Unio metaneurus KUSTER, Conch. Cab. Unio, 1852, p. 50, pl. x, fig. 4.—* PaTut, Conch. Sam., III, 1890, p. 159. *? Unio nodosus BARNES, Am. Jl. Sci. VI, 1823, p. 124, pl. v1, figs. 7, 7a, 7b.2—* HIL- DRETH, Am. Jl. Sci., XIV, 1828, p. 281.—*CHENU, Manual, 1859, II, p. 138, fig. 663. * Mya nodosa EATON, Zool. Text-Book, 1826, p. 216. tQUADRULA METANEVRA var. WARDII Lea. *Unio wardit LEA, Pr. Ac. N. Sci. Phila., V, 1861, p, 392; *Jl. Ac. N. Sei. Phila., V, 1862, p. 187, pl. xxrv, fig. 257; *Obs., IX, 1863, p. 9, pl. xxiv, fig. 257.— *SOWERBY, Conch. Icon., XVI, 1868, pl. LXxxul, fig. 434.—* B. H. WRIGHT, ‘Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p. 172. *Margaron (Unio) wardit Lra, Syn., 1870, p. 33. Mississippi drainage area except its southern portion, extending to the Tennessee and Arkansas rivers. tQUADRULA TUBEROSA Lea. * Unio tuberosus LEA, Pr. Am. Phil. Soc., I, 1840, p. 286; *Tr. Am. Phil. Soe., VIII, 1842, p. 210, pl. xIv, fig. 25; *Obs., III, 1842, p. 48, pl. x1v, fig. 25.—* ConrapD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.—* H. and A. ApAMs, Gen. Rec. Moll., II, 1857, p. 497.—* CHENU, Il]. Conch., 1858, pl. xxvii, figs. 7, 7a, 7b.—* B. H. © Wriacut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 170. *Margaron Unio tuberosus LEA, Syn., 1852, p. 22; 1870, p. 33. Cumberland and Tennessee river systems. 1By common consent this species—which is a most striking one—has been allowed to stand to the credit of Ratinesque. The outlines of the figures bear some resem- blance to the species. 2Tt is hard to tell from these figures just what Barnes had before him when he described this species. They are as much like metanevra as anything. No. 1205. : SYNOPSIS OF THE NAITADES—SIMPSON,. CS tQUADRULA SPARSA Lea. *Unio sparsus LEA, Pr. Am. Phil. Soc., IT, 1841, p. 82;' *Tr. Am. Phil. Soc., VIII, 1842,.p. 242, pl. xxv, fig. 58; *Obs., III, 1842, p. 80, pl. xxv, fig. 58.—* Con- RAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 257.—* H. and A. ApAms, Gen. Ree. Moll., II, 1857, p. 497.—* CHENU, Ill. Conch., 1858, pl. xxvi, figs. 2, 2a, 2b.— * REEVE, Conch. Icon., XVI, 1864, pl.1v, fig. 14.—* B. H. Wricut, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 168. * Margaron (Unio) sparsus LEA, Syn., 1852, p. 22; 1870, p. 33. Holston and Clinch rivers, Tennessee. tQUADRULA INTERMEDIA Conrad. * Unio intermedius CONRAD, Monog., VII, 1836, p. 63, pl. xxxv, fig. 2; *Pr. Ac. N. Sci. Phil., VI, 1853, p. 250.—* Haney, Biv. Shells, 1856, p. 381, Dl xox, fig. 28.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 497.—* KustEr, Conch. Cab. Unio, 1861, p. 213, pl. Lxx, fig. 6.—* REEVE, Conch. Icon., XVI, 1864, pl. x11, fig. 48.—* B. H. Wrieut, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 155. * Margaron ( Unio) intermedius LEA, Syn., 1852, p. 22; 1870, p. 33. * Unio kleinianus KUSTER, Conch. Cab. Unio, 1861, p. 191, pl. Lx, fig. 4. Tennessee River system. tQUADRULA STAPES Lea. * Unio stapes LEA, Tr..Am. Phil. Soc., IV, 1831, p. 17, pl. vu, fig. 8.—* Obs., I. 1834, p. 87, pl. vil, fig. 8.—* ConraD, New F. W. Shells, 1834, p. 71.—* FER- USSAC, Guer. Mag., 1835, p. 28.—* CONRAD, Monog., VII, 1836, p. 62, pl. xx xv, fig. 1.—* HANLEY, Test. Moll., 1842, p. 179; * Biv. Shells, 1843, p. 179, pl. XXU, fig. 38.—* CaTLow and REEVE, Conch. Nom., 1845, p. 64.—* Conran, Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.—* H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 497.—CHENU, Il]. Conch., 1858, pl. xv., figs. 5, 5a, 5b; * Manual, 1859, II, p. 142, fig. 997.—* REEve, Conch. Icon., XVI, 1864, pl. x11, fig. 52.— *B. H. Weieut, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 168. * Margarita (Unio) stapes Lma, Syn., 1836, p. 15; 1838, p. 13. * Margaron (Unio) stapes La, Syn., 1852, p. 22; 1870, p. 33, * Unio retusus SaY, Am. Conch., VI, 1834. * Unio stegarius KUSTER, Conch. Cab. Unio, 1861, p. 211, pl. LXx, fig. 3. Alabama and Tombigbee rivers. Section THELIDERMA (Swainson, 1840) Simpson.? (Type, Unio lachrymosus Lea.) Shell rounded, quadrate to rhomboid, solid, pustulous; beaks rather prominent; beak sculpture consisting of a few rather coarse, subparallel ridges; anterior end rounded or slightly subtruncate above; base often arcuate; posterior end truncate, high and angled behind the ligament; epidermis scarcely rayed, never pointed; beak cavities rather deep. 1It is likely that this is only a small, rather smooth variety of tuberosus. 2Swainson’s first species of this group in the text of the Treatise is Unio irroratus, and after this metanevrus and cylindricus. In the final classification in the same work he includes in the group lachrymosus and pustulosus, and by the process of elimina- tion I use the name in order to save coining a new one. 776 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. (Group of Quadrula lachrymosa.) Sheil quadrate or rhomboid, generally with a sharp, well-developed posterior ridge, in front of which is a wide, shallow, radial excavation ; base incurved, posterior end sharply truncate, generally slightly bian- cular below, high and distinctly angled behind the ligament; posterior tubercles often in somewhat radiating rows; earlier beak sculpture consisting of ridges nearly parallel with the growth lines, but later on becoming doubly looped and blending into the general sculpture of the shell; epidermis smooth; pseudocardinals strong; laterals straight; nacre white. Animal with all four gills used as a marsupium throughout, inner much the larger, free from the abdominal sac nearly or quite their whole length; palpi very large; branchial opening generally having clustered, often branching papillae; anal opening smooth; superanal opening closed below. +QUADRULA ASPER Lea. * Unio asper Lua, Tr. Am. Phil. Soc., IV, 1831, p. 85, pl. 1x, fig. 15; *Obs., I, 1834, p. 95, pl. 1x, fig. 15.—*Conrapb, New F. W. Shells, 1834, p. 67.—* HANLEY, Test. Moll., 1842, p.179; * Biv. Shells, 1843, p. 179, pl. xx11, fig. 37.—* CaTLoOw and REEVE, Conch. Nom., 1845, p. 56.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 245.—* H. and A. ADAMS, Gen. Rec. Moll., Il, 1857, p.497.—* CHENU, Ill. Conch., 1858, pl. xv, figs. 4, 4a, 4b; *Manual, 1859, II, p. 142, fig. 695.— * REEVE, Conch, Icon., XVI, 1864, pl. v, fig. 18.—* B. H. Wriaut, Check List, 1888. * Margarita (Unio) asper LEA, Syn., 1836, p. 15; 1838, p. 15. * Margaron (Unio) asper Lea, Syn., 1852, p. 22; 1870, p. 33. * Unio nobilis CONRAD, Jl. Ac. N. Sci. Phila., II, 1854, p. 297, pl. xxvul, figs. 2, 3. * Unio turgidus REEVE, Conch. Icon., XVI, 1864, pl. 111, fig. 10. * Unio apiculatus var. asper PaTEL, Conch. Sam., III, 1890, p. 144. Streams flowing into the Gulf of Mexico from Alabama west to cen- tral Texas, and northward to the Verdigris River, Kansas. tQUADRULA LACHRYMOSA Lea. Unio lachrymosus Les, Tr. Am. Phil. Soc., III, 1828, p. 272, pl. vi, fig. 8;! Obs., I, 1834, p. 14, pl. v1, fig. 8.—* SHorr and HaTON, Transylvania J1., 1831, p. 76.— *Frrussac, Guer. Mag., 1835, p. 27.—* HANEY, Test. Moll., 1842, p. 177; “Biv. Shells, 1843, p. 177, pl. xx, fig.388.—* CATLOW and REEVE, Conch. Nom., 1845, p. 60.—*H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 497.—* CHENU, Ill. Conch., 1858, pl. xv, figs. 6, 6a, 6b; Manual, 1849, II, p. 142, fig. 6:18.— * REEVE, Conch. Icon., XVI, 1864, pl. 1x, fig. 33.—* B. H. Wrigut, Check List, 1888.—* Pa TEL, Conch. Sam., III,.1890, p. 156. * Margarita (Unio) lachrymosus LEA, Syn., 1836, p. 14; 1838, p. 15. * Margaron (Unio) lachrymosus LEA, Syn., 1852, p. 21; 1870, p. 32. * Unio lachrymosus KusTER, Conch. Cab., 1854, p. 70, pl. xvi, fig. 3. 1Published as a separate in 1827. I have not seen this. Title from Sabin’s Biblio- theca America, No. 1205. SYNOPSIS OF THE NAILADES—SIMPSON. T7T7 * Quadrula lachrymosa BAKER, Moll. Chicago, Pt. I, 1898, p. 83, pl. xxv, fig. 1; x11, fig. 2. t*Unio asperrimus Lea, Tr. Am. Phil. Soc., IV, 1831, p. 71, pl. v, fig.3;! * Obs., I, 1834, p. 81, pl. Vv, fig. 3.—* HANnLEY, Test. Moll., 1842, p. 178; * Biv. Shells, 1843, p. 178, pl. x x1, fig. 12.—* Potrez and MicHaupD, Gall. Moll., 1844, p. 156, pl. tx, figs. 2, 3.—* CaTLow and REEVE, Conch. Nom., 1845, p.56.—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 497.—* Cuenu, Il. Conch., 1858, pl. 1x, figs. 1, la, 1b.—* B. H. Wrienut, Check List, 1888. * Margarita (Unio) asperrimus LEA, Syn., 1836, p. 14; 1838, p. 15. * Margaron ( Unio) asperrimus LEA, Syn., 1852, p. 21; 1870, p. 33. *Unio qudrulus Say, Am. Conch., VI, 1834.—* Conrap, New F. W. Shells, 1834, p. 71.—* FERusSSAC, Guer. Mag., 1835, p. 27.—* ConraD, Pr. Ac. N.’'Sci. Phila., VI, 1853, p. 256.—* KusTER, Conch. Cab. Unio, 1861, p. 184, pl. Lv1ul, fig. 1. *Unio quadratus REEVE, Conch. Icon., XVI, 1864, pl. v1, fig. 24. + QUADRULA LACHRYMOSA var. LUNULATA Pratt. *Unio lunulatus PRATT, Proc. Dav. Acad. Nat. Sci., I, 1876, p. 167, pl. xxx1, fig. 1.2 Entire Mississippi River drainage; various localities in the St. Law- rence basin; Red River of the North; southwest into eastern Texas. tQUADRULA COUCHIANA Lea. *Unio couchianus LEA, Pr. Ac. N. Sci. Phila., IV, 1860, p. 305; Jl. Ac. N.Sci. Phila., IV, 1860, p. 371, pl. Lxv1, fig. 196; * Obs., VIII, 1860, p. 53, pl. Lxv1, fig. 196.— *SowERBY, Conch. Icon., XVI, 1868, pl. Lxxx1, fig. 429.—* B. H. Wricut, Check List, 1888.—* PaTxEL, Conch. Sam., III, 1890, p. 149.—* Fiscnsr and Crossk, Miss. Sci., Pt. 7, II, 1894, p. 566.—* Simpson, Proc. U.S. Nat. Mus., XIX, 1896, p. 370. * Margaron (Unio) couchianus Lea, Syn., 1870, p. 54. Rio Salado, Mexico; southwestern Texas. tQUADRULA FRAGOSA Conrad. * Unio fragosus CONRAD, Monog., II, 1836, p. 12, pl. v1, fig. 2; * Pr. Ac. N. Sci. Phila., VI, 1853, p. 249.—* H. and A. ApDaAms, Gen. Rec. Moll., II, 1857, p. 497.—* KUSTER, Conch. Cab. Unio., 1861, p. 173, pl. Lv, fig. 1.—* REEVE, Conch. Icon., XVI, 1864, pl. 1, fig. 2; vii, fig. 27.—*B. H. Wriegut, Check List, 1888.—* P& TEL, Conch. Sam., IIT, 1890, p. 153. * Margarita (Unio) fragosus LEA, Syn., 1836, p. 14; 1838, p. 15. * Margaron ( Unio) fragosus LEA, Syn., 1852, p. 22; 1870, p. 33. * Unio fragosa CaATLOW and REEVE, Conch. Nom., 1845, p. 59. 1Dr. Lea separated this from his lachrymosus because the latter had tearlike nodules, while those of asperrimus were simply elevated. The two forms absolutely run together, and specimens may be found in which both varieties of nodules occur. There are forms which are almost smooth, and there is great diversity in the matter of inflation. Dr. Lea finally came to doubt whether the asperrimus was valid. 2] think that this is a solid, inflated variety of lachrymosus. From the figure, Pratt’s Specimens seem to have few tubercles; but I have seen quite a number of shells from the Ohio River north to Minnesota which resemble it in shape, but are strongly pustulous throughout. I was at first inclined to believe these were varieties of asper, but I now regard them as a form of lachrymosus, and they may perhaps be referred to Pratt’s variety. He describes his species as having a large lunule, but individuals vary greatly in this character. 1718 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. - * Unio tragosus HANLEY, Test. Moll., 1842, p. 178; * Biv. Shells, 1843, p. 178, pl. xx, fig. 40.:—* CatLow and RrEve, Conch. Nom., 1845, p. 64. Ohio, Cumberland, and Tennessee river systems; westward probably to Minnesota, Nebraska, and Kansas. t QUADRULA FORSHEYI Lea. * Unio forsheyt Lua, Pr. Ac. N. Sci. Phila., III, 1859, p. 155; *J1. Ac. N. Sei. Phila., IV, 1860, p. 357, pl. Lx, fig. 182; *Obs., VIII, 1860, p. 39, pl. Ux, fig. 182.— * REEVE, Conch. Icon., XVI, 1864, pl. v1, fig. 21.—* B. H.Wriaeut, Check List, 1888.—* Pa&TEeL, Conch. Sam., ITI, 1890, p. 153. * Margaron (Unio) forsheyi LEA, Syn., 1870, p. 32. Alabama to Texas, in streams flowing into the Gulf of Mexico. +t QUADRULA SPECIOSA Lea. * Unio speciosus LEA, Pr. Ac. N. Sci. Phila., VI, 1862, p. 168; * Jl. Ac. N. Sci. Phila., V, 1862, p. 207, pl. xxx1, fig. 276;, *Obs., IX, 1863, p. 29, pl. xxx1, fig. 276.— * SowERBy, Conch. Icon., XVI, 1868, pl. Lxxx1v, fig. 447.—* B. H. Wriaut, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 168. * Margaron ( Unio) speciosus LEA, Syn., 1870, p. 33. Kansas, south to Texas. tQUADRULA APICULATA Say. * Unio apiculatus Say, New Harm. Diss., II, No.2, 1829, p.309; * Am. Conch., VI, 1834, pl. L11.2—* ConraD, New F. W. Shells, 1834, p. 67.—* FERussac, Guer. Mag., 1835, p. 27.—* ConRaD, Monog., IX, 1837, p. 78, pl. xLIv, fig. 1.—* Han- LEY, Test. Moll., 1842, p. 178; * Biv. Shells, 1843, p. 178, pl. xx1u1, fig. 51.— *@aTLow and REEVE, Conch. Nom., 1845, p. 55.—* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 245.—* H. and A. ADAMS, Gen. Ree. Moll., IT, 1857, p. 497.— * CHENU, Manual, 1859, II, p. 142, fig. 696.—* REEVE, Conch. Icon., XVI, 1864, pl. u1, fig. 11.—* B. H. Wrient, Check List, 1888.—* Pare, Conch. Sam., III, 1890, p. 144. * Margarita (Unio) apiculatus Lea, Syn., 1836, p.15; 1838, p. 15. * Margaron (Unio) apiculatus LEA, Syn., 1852, p. 22; 1870, p. 33. * Unio nobilis CONRAD (part), Jl. Ac. N. Sci. Phila., 1854, p. 297, pl. xx vit, figs. 2, 3.3 Louisiana to Texas. tQUADRULA RUMPHIANA Lea. * Unio rumphianus LEA, Tr. Am. Phil. Soc., X, 1852, p. 276, pl. x x11, fig. 34; Obs., V, 1852, p. 32, pl. xx, fig. 34.—*Conrapb, Pr. Ac. N. Sci. Phila., VI, 1853, p. 257.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 497.—B. H. Wrieut, Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p. 166. * Margaron ( Unio) rumphianus LEA, Syn., 1852, p. 21 ; 1870, p. 33. t*Unio blandianus Lra,* Pr. Ac. N.Sci. Phila., VIII, 1856, p. 263; * Jl. Ac. N. Sci. 1 Written tragosus in text, no doubt a typographical error, as it is written cor- rectly in the explanation of the plate. 2 Say says that U. asper Lea is the same as his apiculatus. I think he is wrong. 8 One specimen figured (fig. 2) is @. apiculata. The other (fig. 3) is a nondescript, possibly Q. asper, or it may be the form of Q. lachrymosus which I have placed under var. lunulatus Pratt. 4Certain forms of rumphianus are very different from blandianus, being more inflated, and showing a high, biangulate posterior ridge and a deep radial sinus in front of it, while specimens of the latter are much less inflated and have a low, some- what rounded, posterior ridge. But the difference between the two seems to be absolutely briged by intermediate specimens. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. T79 Phila., IV, 1858, p. 65, pl. x1, fig. 47; * Obs., VI, 1858, p. 65, pl. x1, fig. 47.— * SOWwERBY, Conch. Icon., XVI, 1868, pl. Lxxviltt, fig. 405.—* B. H. Wricut, Check List, 1888.—* PaxTEL, Conch. Sam., ITT, 1890, p. 46. * Margaron (Unio) blandianus LEA, Syn., 1870, p. 33. Western Georgia; Alabama in the Gulf drainage. (Group of Quadrula pustulosa.) Shell round quadrate, truncated behind, full and angled back of the ligament; beaks high; beak sculpture a few coarse ridges which are swollen at the somewhat rounded posterior ridge; surface generally more or less pustulous but sometimes entirely smooth and in some cases slightly corrugated; epidermis often having a broad, faint, green ray; hinge strong; nacre white or purple. Animal with the marsupium occupying all four gills throughout; inner gills the larger, free the whole or the greater part of their length from the abdominal sac; branchial opening having clustered, often branching, papille. tQUADRULA PUSTULOSA Lea. *Unio pustulosus LEA, Tr. Am. Phil. Soc., IV, 1831, p. 76, pl. vu, fig.7; * Obs., I, 1834, p. 86, pl. vil, fig. 7.—* FerRussac, Guer. Mag., 1835, p. 28.—* HANLEY, Test. Moll., 1842, p. 180; * Biv. Shells, 1843, p. 180, pl. x x1, fig. 34.—* CaTLow and REEVE, Conch. Nom., 1845, p. 63.—* H. and A. ApAms, Gen. Rec. Moll., IT, 1857, p.496.—* CHENU, Il. Conch., 1858, pl. x x10, figs. 2, 2a, 2b.—* CALKINS, Pr. Ottawa Acad. N. Sci., 1874, p. 44.—* B. H. Wricut, Check List, 1888. *Margarita (Unio) pustulosus LEA, Syn., 1836, p. 15; 1838, p. 15. *Margaron (Unio) pustulosus LEA, Syn., 1852, p. 22; 1870, p. 33. *Quadrula pustulosa BAKER, Moll. Chicago, Pt. 1, 1898, p. 86, pl. xxv, fig. 2; XXVIII, fig. 13. : * Unio verrucosa VALENCIENNES, Rec. Obs. Zool. Anat., II, 1835, p. 231, pl. LI, fig. 2. * Unio nodulosus Say, Am. Conch., VI, 1834. *Unio prasinus CONRAD,' New F. W. Shells, 1834, p. 44, pl. 1m, fig. 1, p. 71.— * FERUSSAC, Guer. Mag., 1835, p. 29.—* MOLLER, Syn. Noy. Gen., 1836, p. 208.—* CONRAD, Monog., IX, 1837, p. 79, pl. xuIv, fig. 2.—* CHENU, Bib. Conch., 1st ser., III, 1845, p. 22, pl. m1, fig. 1.—* Conran, Pr. Ac. N. Sci. Phila., VI, 1853, p. 255.—* REEVE, Conch..Icon., XVI, 1864, pl. vu, figs. 26, 26a, 26b.—* B. H. Wricut, Check List, 1888. *Unio bullatus var. prasinus PaTeL, Conch. Sam., III, 1890, p. 146. * Unio bullatus CONRAD, Néw F. W. Shells, 1834, p. 68; Monog., X, 1838, p. 82, pl. xiv, fig. 2.—* KusTER, Conch. Cab. Unio, 1852, p. 47, pl. 1x, fig. 3.— * CoNRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 245.—* REEVE, Conch. Icon., XVI, 1864, pl. xu, fig. 43.—* Pare, Conch. Sam., III, 1890, p. 146. *Unio dorfeuillianus La, Tr. Am. Phil. Soc., VI, 1838, p. 73, pl. xvu, fig. 54; * Obs., II, 1838, p. 73, pl. xvut, fig. 54.—* TRoscHEL, Arch. fiir Naturg., V, 1839, II, p. 237.—* HANLEY, Test. Moll., 1842, p. 179; * Biv. Shells, 1843, p. 179, pl. xxi, fig. 10.—* CaTLow and REEVE, Conch. Nom., 1845, p. 58.— *ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 248.—* H. and A. ADAMs, Gen. Ree. Moll., II, 1857, p. 497.— *CuHENU, II]. Conch., 1858, pl. xxv, figs. 5, 5a, 5b.— * REEVE, Conch. Icon., XVI, 1864, pl. x, fig. 38.—* B. H. Wricut, Check List, 1A smooth form of pustulosus, according to the type in Philadelphia Academy. 780 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL XXII. 1888.—* Catt (part), Tr. Ac. N. Sci. St. Louis, VII, 1895, p. 40, pls. x11, xm, XIV, XV, figs. 1, 2. * Margarita (Unio) dorfeuillianus LEA, Syn., 1838, p. 15. *Margaron (Unio) dorfeuillianus LEA, Syn., 1852, p. 22; 1870, p. 33. *? Unio uber ConRAD, Am. J]. Conch., II, 1866, p. 279, pl. xv, fig. 16.! t* Unio schoolcraftensis Lma, Tr. Am. Phil. Soc., V, 1834, p. 37, pl. 10, fig. 9;2 *Obs., I, 1834, p. 149, pl. 1, fig. 9—*FERussac, Guer. Mag., 1835, p. 29.—*HANLEY, Test. Moll., 1842, p. 178; *Biv. Shells, 1843, p. 178.—*CatTLow and REEvr, Conch. Nom., 1845, p. 63.—*H. and A. ADAMS, Gen. Ree. Moll., IT, 1857, p. 497. — *SowERBY, Conch. Icon., XVI, 1868, pl. 1, fig. 8; x11, fig. 47. * Marjarita (Unio) schoolcraftensis LEA, Syn., 1836, p. 15; 1833, p. 15. * Margaron (Unio) schoolcraftensis Lea, Syn., 1852, p. 22. * Unio bullatus var. schoolcraftensis PaaTEL, Conch. Sam., III, 1890, p. 146. * Margaron ( Unio) schoolcrajtii LEA, Syn., 1870, p. 33. * Unio schoolcraftii, B. H. WRIGHT, Check List, 1888. tQUADRULA PUSTULOSA var. PERNODOSA Lea. *Unio pernodosus Lea, Pr. Am. Phil. Soc., IV, 1845, p. 163; *Tr. Am. Phil. Soc., X, 1848, p. 71, pl. 11, fig. 8; *Obs., IV, 1848, p. 45, pl. 11, fig. 8.—* CONRAD, Pr. Ac.N. Sci. Phila., VI, 1853, p. 254.—* REEVE, Conch. Icon., XVI, 1864, pl. xu, fig. 46.—* B. H. Wricur, Check List, 1888.—* P.zrEL, Conch. Sam., III, 1890, p. 163. *Margaron (Unio) pernodosus LEA, Syn., 1870, p. 34. t* Unio asperatus Lea,® Pr. Ac. N. Sci. Phila., V, 1861, p.41; *J1. Ac. N. Sci. Phila., V, 1862, p. 68, pl. vi, fig. 218; *Obs., VIII, 1862, p. 72, pl. vi, fig. 218.— *SOWERBY, Conch. Icon., XVI, 1868, pl. LXxxy, fig. 450.—* B. H. WRiGut, Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p. 145. *Margaron (Unio) asperatus LEA, Syn., 1870, p. 33. +QUADRULA PUSTULOSA var. KEINERIANA Lea. *Unio keinerianus Lea, Pr. Am. Phil. Soc., V, 1852, p. 251; *Tr. Am. Phil. Soc., X, 1852, p. 281, pl. xx, fig. 40; *Obs., V, 1852, p. 37, pl. xxl, fig. 40.— *CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 251.—* H. and A. ApAms, Gen. Rec. Moll., II, 1857, p. 496.—*B. H. Wricut, Check List, 1888.—* PaTsEt, Conch. Sam., III, 1890, p. 156. *Margaron (Unio (keinerianus LEA, Syn., 1852, p. 22; 1870, p. 34. Entire Mississippi drainage; Michigan; Lake Erie;? Alabama River system; westward to central Texas; the varieties in streams draining into the Gulf of Mexico. 1 Probably a smooth form of pustulosus. 2The type is a nearly smooth, compressed form of pustulosus, I am sure. Lea includes with it in his collection a number of strongly pustulous, compressed shells. Quadrula pustulosa is a very widespread, abundant, and variable species. A large, solid, inflated, and somewhat quadrate form has been called Unio dorfeuillianus by Dr. Lea, and various smooth races have received names, but they so completely blend into the typical form that it does not seem to me they are worthy of varietal names. A somewhat triangular variety, often having a broad, faint ray, is found in the Ohio River and southward which probably equals the variety pernodosa. 3Seems to be about the same as U. pernodosus, only a little smoother. These two are more rounded posteriorly, and are doubtfully worthy of a varietal name. NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 781 + QUADRULA COOPERIANA Lea. tUnio cooperianus LEA, Tr. Am. Phil. Soc., V, 1834, p. 61, pl. vit, fig. 21; *Obs., I, 1834, p. 173, pl. vu, fig. 21.—* Haney, Test. Moll., 1842, p. 180; *Biv. Shells, 1843, p. 180, pl. xx1, fig. 1.—*CaTLow and REEV«#, Conch Nom., 1845, p.57.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 247.—* H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 496.—* KusTER, Conch. Cab. Unio, 1861, p. 183, pl. Lvu, fig. 5.—* B. H. Wrieut, Check List, 1888.—* PaTeL, Conch. Sam., III, 1890, p. 149. * Margarita (Unio) cooperianus LEA, Syn., 1836, p. 16; 1838, p. ae *Margaron ( Unio) cooperianus LEA, Syn., 1852, p. 22; 1870, p. * Unio striatus REEVE, Conch. Icon., XVI, 1864, pl. viul, fig. ea Ohio, Cumberland, and Tennessee river systems. Reported by Keyes at Muscatine, Iowa, but this is probably an error. +QUADRULA MORTONI Conrad. * Unio mortoni CONRAD, Monog. II, 1836, p. 11, pl. v1, fig. 1.—* KusTER, Conch. Cab. Unio, 1852, p.51, pl. x1, fig. 1.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 252.—* B. H. Wrieut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 160. t * Unio turgidus Lea, Tr. Ieee, Phil Soce Wass. pe ll plonvs, loll Ob saaslle 1838, p. 11, pl.v, fig. 11.—* TRoscHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 234.— * HANLEY, Test. Moll., 1842, p. 180; * Biv. Shells, 1843, p. 180, pl. x x1, fig. 51.— *CaTLOW and REEVE, Conch. Nom., 1845, p. 65.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 496.—* CHENU, IIL. Conch., 1858, pl. xxv, figs. 1, la, 1b.— 1B}, 18 [5 ee Check List, 1888.—* P#TEL, Conch. Sam., III, 1890, p. 170. * Margarita (Unio) turgidus LEA, Syn., 1836, p. 16; 1838, p. 15. * Margaron (Unio) turgidus LEA, Syn., 1852, p. 22; 1870, p. 34. Lower Mississippi River drainage as far north as western Tennessee and Indian Territory; west into eastern Texas. tQUADRULA SPHERICA Lea. *Unio sphaericus LEA, Pr. Ac. N. Sci. Phila., XII, 1868, p. 145; *J1. Ac. N. Sci. Phila., 1869 pilose platy To 132 Obs. Xl Ik pas, plo wuiy ho Sie —— BE. WriGut, Check List, 1888.—* P&#reL, Conch. Sam., III, 1890, p. 168. * Margaron (Unio) sphericus LEA, Syn., 1870, p. 33. Streams of Alabama and Mississippi flowing into the Gulf of Mexico. tQUADRULA PUSTULATA Lea. *Unio pustulatus LEA, Tr. Am. Phil. Soc., 1834, p. 79, pl. vu, fig. 9; * Obs., I, 1834, p. 89, pl. vu, fig. 9.—* HANLEY, Test Moll., 1842, p. 178; * Biv. Shells, 1843, p. 178, pl. xxu1, fig. 36.—* CaTLow and ReEve, Conch. Nom., 1845, p. 63.—* ConRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 253.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 497.—* CHENU, Ill. Conch., 1858, pl. xv, figs. 8, 8a, 8b.—* CaLKins, Pr. Ottawa Ac. N. Sci., 1874, p. 44.—* B. H. WRIGHT, Check List, 1888. * Margarita (Unio) pustulatus LEA, Syn., 1836, p. 15; 1838, p. 15. * Margaron (Unio) pustulatus Lea, Syn., 1852, p. 22; 1870, p. 33. ‘Changed in errata to cooperianus. 782 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. *Unio (Theliderma) pustulata SWAINSON, Treat. on Mal., 1840, p. 271, fig. 54d. *Unio nodulatus Say, Am. Conch., VI, 1854.—* ConraD, New F. W. Shells, 1834, p. 70.—* Frrussac, Guer. Mag., 1835, p. 28.—* ConraD, Monog., 1837, p. 80, pl. xiv, fig. 1.—* Kusrmr, Conch. Cab., 1861, p. 254, pl. Lxxxv1, [, fig. 1.— * REEVE, Conch. Icon., XVI, 1864, pl. xm, fig. 51. * Unio nodulatus RAFINESQUE var. pustulatus PasTEL, Conch. Sam., III, 1890, p. 161. Ohio, Cumberland, and Tennessee river systems; Mississippi River and tributaries from eastern Iowa south to Louisiana; southern Michigan. +QUADRULA NODIFERA Conrad.! * Unio nodiferus CONRAD, Pr. Ac. N. Sei. Phila., I, 1841, p.19; *J1. Ac. N. Sei. Phila., VIII, 1842, p. 179; I, 1850, p. 277, pl. xxxvutl, figs. 4, 8; *Pr. Ac. N. Sei. Phila., VI, 1853, p. 253. Louisiana and eastern Texas. t QUADRULA CAHABENSIS Lea. *Unio cahabensis LEA, Pr. Ac. N.Sci. Phila., XXIII, 1871, p. 190; * Jl. Ac. N. Sei. Phila., VIII, 1874, p. 17, pl. v, fig.14; *Obs., XIII, 1874, p. 21, pl. v, fig. 14.— *B. H. Wrieut, Check List, 1888. Cahawba River, Alabama. + QUADRULA VALLATA Lea. *Unio vallatus Lea, Pr. Ac. N. Sci. Phila., XII, 1868, p. 145; * Jl. Ac. N. Sci. Phila., 1869, p. 315, pl. 1, fig. 128; *Obs., XII, 1869, p. 75, pl. L, fig. 128.—*B. H. WriGHt, Check List, 1888. *Margaron (Unio) vallatus Lea, Syn., 1870, p. 34. Alabama and Black Warrior rivers, Alabama. +t QUADRULA REFULGENS Lea. *Unio refulgens Lua, Pr. Ac. N. Sci. Phila., XII, 1868, p. 145; * Jl. Ac.N. Sci. Phila., VI, 1869, p. 317, pl. 11, fig. 180; * Obs., XII, 1869, p.77, pl. 11, fig. 130.—* B. H. WriGut, Check List, 1888. *Margaron (Unio) refulgens LEA, Syn., 1870, p. 34. *Unio pustulosus CALL (part), Tr. Ac. Sci. St. Louis, VII, 1898, p. 42, pl. xv, figs. 3, 4. Mississippi and probably Alabama. t{QUADRULA HOUSTONENSIS Lea. *Unio houstonensis Lea, Pr. Ac. N. Sci. Phila., III, 1859, p.155; *Jl. Ac. N. Sci. Phila., LV, 1860, p. 358, pl. Lx, fig. 183; *Obs., VIII, p. 40, pl. LX, fig. 183.— * SowERByY, Conch. Icon., XVI, 1868, pl. LXXXI, Dae 425.—* B. H. WRIGHT, Check List, 1888. * Margaron (Unio) houstonensis LEA, Syn., 1870, p. 55. Texas, Louisiana, and southern Arkansas. Verdigris River, Kansas? 1 There are six shells bearing the name Unio nodiferus Conrad in the Philadelphia Academy of Natural Sciences. Part of them are the same as figured in the Journal, and the rest are probably mortoni. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 783 tQUADRULA PETRINA Gould. - *Unio petrinus GOULD, Pr. Bost. Soc. N. Hist., V, 1855, p. 228; * Otia Conch., 1862, p. 218.—* B. H. Wricur, Check List, 1888. * Margaron ( Unio) petrinus Lea, Syn., 1870, p. 55. Texas. Cragin’s localities, Verdigris and Neosho rivers, Kansas, are probably erroneous. +QUADRULA AUREA Lea. *Unio aureus LEA, Pr. Ac. N. Sci. Phila., III, 1859, p. 112; *Jl. Ac. N. Sci. Phila., | V, 1862, p. 195, pl. xxvi, fig. 264; *Obs., IX, 1863, p. 17, pl. xxv, fig. 264.— *SowmERBY, Conch. Icon., XVI, 1868, pl. LXx x11, fig. 488.—* B. H. WRIGHT, Check List, 1888,—* Pare, Conch. Sam., III, 1890, p. 145. * Margaron (Unio) aureus LEA, Syn., 1870, p. 37. *Unio bolli CALL, Am. Naturalist, XV, 1881, p. 390.! Texas. tQUADRULA PAUPERCULA Lea. *Unio pauperculus LE, Pr. Ac. N. Sci. Phila., V, 1861, p.39; * Jl. Ac. N. Sci. Phila., V, 1862, p. 99, pl. xv, fig. 247; * Obs., VIII, 1862, p. 103, pl. xv, fig. 247.—* B. H. WriaGut, Check List, 1888. * Margaron (Unio) pauperculus LEA, Syn., 1870, p. 55.” Texas. (Group of Quadrula infucata.) Shell small, rounded rhomboid, with a low, distinct posterior ridge, truncated behind and angled back of the ligament; beaks moderately elevated, subcentral; beak sculpture, four or five coarse, subparallel ridges which curve upward behind, with fine, radial ridges between them and the ligament; surface blackish, sculptured with zigzag or chevron-shaped corrugations which often become pustulous below; posterior slope having radial, broken wrinkles; pseudocardinals small, stumpy; secondary lateral of the right valve present; beak cavities moderately deep, slightly compressed; anterior scars small, smooth; nacre rather dull, purplish. Animal with the marsupium occupying all four leaves of the gills; inner gills the larger, free from the abdominal sac only part of their length; anal opening without papille.° 1 An inflated form. 2 Usually entirely free from sculpture excepting faint corrugations on the poste- rior slope. A specimen belonging to Mr. William A. Marsh, from Village Creek, Texas, shows slight tuberculation on the disks. 3T have been puzzled as to the relationship of this group and have been strongly inclined to place it near chickasawhensis, but I now believe it is more closely allied to the Pustulosa group. Its posterior truncation, the prominent angle behind the ligament, and beak sculpture lead me to place it here. The general sculpture of @). petrina approaches that of these species. 784 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. + QUADRULA INFUCATA Conrad. *Unio infucatus CONRAD, New F. W. Shells, 1834, p. 45, pl: 111, fig. 2, p. 70.—* MGL- LER, ‘Syn. Nov. Gen., 1836, p. 208.—* FERUSSAC, Guer. Mag., 1835, p. 29.— *HANLEY, Test, Moll., 1842, p. 203; * Biv. Shells, 1843, p. 203.—* CHENU, Bib. Conch., Ist ser., III, 1845, p. 22, pl. 1. fig.6.—* CatTLow and RrEvex, Conch. Nom., 1845, p. 60.—* Conrab, Pr. Ac. N. Sei. Phila., VI, 1853, p. 250.—* H. and A. Abas, Gen. Rec. Moll., II, 1857, p. 497.—* Kusrer, Conch. Cab. Unio, 1861, p. 176, pl. Ly, fig. 5.—* SowERBy, Conch. Icon., XVI, 1866, pl. XL, fig. 221.— *B.H. Wriegut, Check List, 1888.—* Pare, Corch. Sam., III, 1890, p. 155.— * Simpson, Pr. U.S. Nat. Mus., XV, 1892, p. 409, pl xL1x, figs. 1-3, 6. * Margarita (Unio) infucatus Lea, Syn., 1836, p. 34; 1838, p. 23. * Margaron ( Unio) infucatus LEA, Syn., 1852, p. 20; 1870, p. 50. *Unio securiformis CONRAD, }Ann. and Mag., IV, 1849, p. 300; Pr. Ac. N. Sci. Phila., * I, 1850, p. 275 pl. xxxvut, fig. 1; *IV, 1849, p. 152; *VI, 1852, p. 257— *PaTEL, Conch. Sam., III, 1890, p. 167. Chattahoochee and Flint rivers, Georgia. tQUADRULA KLEINIANA Lea.? *Unio kleinianus Lea, Pr. Am. Phil. Soc., V, 1852, p. 251; *Tr. Am. Phil. Soce., X, 1852, p. 265, pl. xvu, fig. 18; *Obs., V, 1852, p. 21, pl. xvu, fig. 18.— *ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 257.—* H. and A. ADAmMs, Gen. Ree. Moll., II, 1857, p. 498.—* REEVE, Conch. Icon., XVI, 1864, pl. 11, fig. 6.— *B. H. Wrieut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 156. * Margaron (Unio) kleintanus Lra, Syn., 1852, p. 20; 1870, p. 30. * Unio sparsus KUSTER, Conch. Cab. Unio, 1861, p. 252, pl. LXxxv, fig. 2. Southern Georgia; northern Florida. Section FUSCONAIA Simpson, 1900, (Type, Unio trigonus Lea.) Shell round, rhomboid, triangular, or short elliptical, with a moderate posterior ridge; beaks high and full, curved inward and forward, sculp- tured with a few coarse, parallel ridges which curve upward behind; epidermis dark; surface not sculptured; hinge plate of moderate width; pseudocardinals strong; nacre white, salmon, or purple. Ammal having all four gills occupied throughout as a marsupium, filled with pink or purplish ova when gravid; inner gills much the wider in front, free generally from the abdominal sac; outer gills cut away slopingly in front. (Group of Quadrula beadleiana.) Shell moderately solid, somewhat triangularly rounded, bluntly pointed and sometimes slightly biangular at post base, with a more or less developed posterior ridge, in front of which it is full; beaks not 1A rather smooth infucatus. 2JTn the Proceedings of the U. 8. National Museum, XV, 1892, p. 404, I united this species with Unio infucatus Conrad. Further study of additional material and of the animals which show some differences has induced me to separate the two. ~~ NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 785 very high; beak sculpture very coarse, concentric ridges;! disks irregu- larly concentrically striate; epidermis rich, dark chestnut; hinge plate rather narrow; pseudocardinals radial, stumpy; cavity of the beaks only moderately deep. No gravid specimens have been seen, but those examined do not seem to differ from others of the genus. FQUADRULA CHICKASAWHENSIS Lea. *Unio chickasawhensis Lea, Pr. Ac. N. Sci. Phila., V, 1861, p. 39; *Jl. Ac. N. Sci. Phila., V, 1862, p. 101, pl. xvi, fig. 250; *Obs., VIII, 1862, p. 105, pl. xv1, fig. 250.—*B. H. Wrrent, Check List, 1888. Margaron ( Unio) chickasawhensis Lea, Syn., 1870, p. 55. Mississippi and Louisiana. +QUADRULA SUCCISSA Lea. *Unio succissus Lea, Tr. Am. Phil. Soc., X, 1852, p. 275, pl. xx1, fig.32; *Obs., V, 1852, p. 31, pl. xx1, fig. 32.—* H. and A. ApAmMs, Gen. Rec. Moll., II, 1857, p. 496.—* SowERBy, Conch. Icon., XVI, 1866, pl. xxxiir, fig. 174.—*B. H. WriGut, Check List, 1888.—*PareL, Conch. Sam., III, 1890, p. 169.— *Srmpson, Pr. U.S. Nat. Mus., XV, 1892, p. 29, pl. LXXx1, fig. 5. *Margaron (Unio) succissus LEA, Syn., 1852, p. 24; 1870, p. 38. t* Unio cacao LEA, Pr. Ac. N.Sci. Phila., II], 1859, p. 154; *J1. Ac. N. Sci. Phila., IV, 1860, p. 344, pl. Lv1, fig. 169; *Obs., VIII, 1860, p. 26, pl. Lv1, fig. 169.— *B. H. Wrieut, Check List, 1888. *Margaron (Unio) cacao LEA, Syn., 1870, p. 54. West Florida; southern Alabama. tQUADRULA PUMILA Lea. * Unio pumilus Lua, Tr. Am. Phil. Soc., VI, 1838, p. 23, pl. vu, fig. 17; * Obs., II, 1838, p. 23, pl. vu, fig. 17.—* TROSCHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 234.—* HANLEY, Test. Moll., 1842, p.185; * Biv. Shells, 1843, p. 185, pl. xxi, fig. 13.—* CaTLow and REEVE, Conch. Nom., 1845, p.-63.—* CONRAD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 255.—* H. and A. ApAMs, Gen. Rec. Moll, II, 1857, p. 495.—* CHENU, Ill. Conch., 1858, pl. xix, figs. 1, la, 1b.—* SowmrRsBy, Conch. Icon., XVI, 1866, pl. xxxv1, fig. 198.—* B. H. Wriegut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 164. * Margarita (Unio) pumilus LEA, Syn., 1836, p. 20; 1838, p. 17. * Margaron (Unio) pumilus LEA, Syn., 1852, p. 24; 1870, p. 37. Black River, North Carolina. Only the type shell, a small specimen, not in very good condition, has been seen by me. t? QUADRULA UTRICULUS Lea. * Unio utriculus Lea, Pr. Am. Phil. Soc., IV, 1845, p. 164; *Tr. Am. Phil. Soce., X, 1848, p. 69, pl. 1, fig. 3; Obs., IV, 1848, p. 43, pl. 1, fig. 3.—* CoNnRaAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 259.—* B. H. Wriaut, Check List, 1888. * Margaron (Unio) utriculus LEA, Syn., 1870, p. 46., North Carolina. The specimen in the Lea collection which came from Arkansas is not this species at all. 1 According to Marsh, who has examined the beak sculpture of (. askewi. I have never seen a specimen of the group in which it was not all eroded away. Proc. N. M. vol. xxii 50 786 PROCEEDINGS OF THE NATIONAL MUSEUM. Vou, XXI1, tQUADRULA BEADLEIANA Lea. * Unio beadleianus Lea, Pr. Ac. N. Sci. Phila., V, 1861, p. 39; *Jl. Ac. N. Sci. Phila., V, 1862, p. 94, pl. xrv, fig. 242; *Obs., VIII, 1862, p. 98, pl. xrv, fig. 242.—* B. H. Wriaut, Check List, 1888. * Margaron (Unio) beadleianus Lea, Syn., 1870, p. 55. Mississippi to eastern Texas. tQUADRULA ASKEWI Marsh. * Unio askewi Marsn, Nautilus, X, 1896, p.91; X, 1897, pl.1, figs. 3, 4. Western Louisiana; eastern Texas. (Group of Quadrula trigona.) Shell triangular, generally inflated, with high, full beaks which are ineurved and turned forward over a well-developed lunule; anterior end obliquely truncate above, often with a curved, shallow depression in each valve running from the beaks to midway down the anterior end, and forming a sort of secondary lunule; posterior base usually incurved; — the posterior ridge ending in a rather sharp point; beak sculpture, a few coarse, concentric ridges turned upward behind and often swollen on the posterior ridge, sometimes becoming finer and broken or irregu- lar on the upper disk; hinge solid but not very wide; pseudocardinals triangular and radial, torn; there is a secondary lateral in the right valve; cavity of the beaks generally deep and compressed; muscle scars small, deep. Animal with the marsupium occupying the whole of all four bran- chie; inner gills generally free from the abdominal sac, much wider than the outer in front; outer nearly or quite equaling them in width behind; anal opening distinctly crenulate or papillose. +QUADRULA RUBIGINOSA Lea. *Unio rubiginosus LeA, Tr. Am. Phil. Soc., III, 1829, p. 427, pl. vut, fig. 10; * Obs., I, 1834, p. 41, pl. vit, fig. 10.—* DEsHayEs, An. sans Vert., 2d ed., VI, 1835, p. 548.—* HANLEY, Test. Moll., 1842, p. 185; * Biv. Shells, 1843, p. 185, pl. xx1, fig. 43.—* CaTLow and REEVE, Conch. Nom., 1845, p. 63.—* H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 495.—* CuENu, I]. Conch., 1858, pl. x11, figs. 4, 4a, 4b.—* REEVE», Conch. Icon., XVI, 1865, pl. xxvil, fig. 136.—* CaLkins, Pr. Ottawa Acad. Sci., 1874, p. 44.—* B. H. Wricut, Check List, 1888.—*WaL- TON, Moll. Monroe Co., 1892, p. 16, pl. vit, fig. 1. *Margarita (Unio) rubiginosus LEA, Syn., 1836, p. 20; 1838, p. 17. *Margaron (Unio) rubiginosus Lea, Syn., 1852, p. 24; 1870, p. 37. *Umo rubiginosa DESHAYES, An. sans Vert., 3d ed., II, 1839, p. 672. “Quadrula rubiginosa BakER, Moll. Chicago, Pt. 1, 1898, p. 77, pl. xix, fig. 2; Org) 10K ILE “Unio flavus CONRAD, New F. W. Shells, 1834, p. 69.—* Say, Am. Conch., VI, 1834.—* FERussAC, Guer. Mag., 1835, p. 27.—* ConRAD, Monog., IX, 1837, p. 74, pl. XLI, fig. 2.—* KusTER, Conch. Cab., 1852, p. 61, pl. x1v, fig. 2; p. 265, pl. LXXXIX, fig. 5.—* ConraD, Pr. Ac. N. Sei. Phila., VI, 1853, p. 249. “Unio flavus var. rubiginosus PaTEL, Conch. Sam., III, 1890, p. 152. “Unio trigonus SOWERBY, Conch. Icon., XVI, 1868, pl. LxIv, p. 322. Entire Mississippi drainage; eastern Texas; St. Lawrence River system; Nelson River and its tributaries. No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. TS7 +QUADRULA CERINA Conrad. *Unio cerinus CONRAD, Monog., XI, 1838, p. 95, pl. Lr; *Pr. Ac. N. Sci. Phila., VI, 1853, p. 246.—* SowERBY, Conch. Icon., XVI, 1868, pl. LXxxxvu, fig. 468.— *B. H.Wricut, Check List, 1888.—* PareL, Conch. Sam., III, 1890, p. 147. Louisiana; eastern Texas; Mississippi; Alabama; north to Arkansas. tf QUADRULA HEBETATA Conrad. *Unio hebetatus CONRAD, * Jl. Ac. N. Sci. Phila., II, 1854, p. 296, pl. xxv1, fig. 5.— *B.H. WRIGHT, Check List, 1888. *Margaron (Unio) habetatus LEA, Syn., 1870, p. 38. Missouri; Tuscaloosa River, Alabama. FQUADRULA RUBIDA Lea. *Unio rubidus Lea, Pr. Ac. N. Sci. Phila., V, 1861, p. 40; *Jl. Ac. N. Sci. Phila., V, 1862, p. 95, pl. xv, fig. 244; *Obs., VIII, 1862, p. 99, pl. xiv, fig. 244.— *B. H. Wriaut, Check List, 1888. *Margaron (Unio) rubidus LEA, Syn., 1870, p. 35. t* Unio negatus Lma, Pr. Ac. N. Sci. Phila., V, 1861, p.59; *J1. Ac. N. Sci. Phila., V, 1862, p. 76, pl. 1x, fig. 225; Obs., VIII, 1862, p. 80, pl. 1x, fig. 225.—* Sow- ERBY, Conch. Icon., XVI, 1866, pl. xx x11, fig. 165.—* B. H. Wricut, Check List, 1888.—*PaTEL, Conch. Sam., III, 1890, p. 160. * Margaron (Unio) negatus Lea, Syn., 1870, p. 35. Streams flowing iuto the Gulf of Mexico from Alabama to Louisiana. The shell reported under the name Unio negatus, from Kansas, is prob- ably a somewhat sulcate rubiginosus. tQUADRULA CHUNII Lea. Unio chunit Lea, Pr. Ac. N. Sci. Phila., V, 1861, p. 392; * Jl. Ac. N. Sci. Phila., V, 1862, p. 196, pl. xxviI, p. 265; *Obs., IX, 1863, p. 18, pl. xxvu, fig. 265.— *B. H. WriGut, Check List, 1888.—* Pa7re., III, 1890, p. 148. *Margaron (Unio) chuntt Lea, Syn., 1870, p. 38. ‘ Mississippi; west to central Texas north to Arkansas. + QUADRULA RIDDELLII Lea. *Unio riddelliti Lea, Pr. Ac. N. Sci. Phila., V, 1861, p. 392; *J1. Ac. N. Sci. Phila., V, 1862, p. 198, pl. xxvul, fig. 267; * Obs., IX, 1863, p. 20, pl. xxvu, fig. 267.— * SOWERBY, Conch. Icon., XVI, 1868, pl. Lx xxi, fig. 442:-—* B. H. WRIGHT, Check List, 1888.—* ParrL, Conch. Sam., III, 1890, p. 165. *Margaron (Unio) riddellit Lea, Syn., 1870, p. 38. Dallas, Texas. t QUADRULA FRIERSONI B. H. Wright. * Unio friersoni B. H. Wricut, Nautilus, IX, 1896, p. 134, pl. m1. Louisiana; eastern Texas. +t QUADRULA TRIGONA Lea. * Unio trigonus, Lea, Tr. Am. Phil. Soc., IV, 1831, p. 110, pl. xvi, fig. 40; * Obs., I, 1834, p. 120, pl. xvi, fig. 40.—* HaNLEY, Test. Moll., 1842, p.185; * Biv. Shells, 1843, p.185, pl. xx1, fig.6.—* CaTLow and REEVE, Conch. Nom., 1845, p. 64.— * CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 496.—* CHENU, Ill. Conch., 1858, pl. xvi, figs. 7, Ta, 7b.— 788 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. *SoOwERBY, Conch. Icon., XVI, 1868, pl. LXxxv1, fig. 459.—* CALKINS, Pr. Ottawa Acad. Sci., 1874, p. 45. —* B. H. WRIGHT, her List, pee —* PATEL, Conch. Sam., III, 1890, p. 170. * Margarita Gono) trigonus La, Syn., 1836, p. 18; 1838, p. 17. * Margaron ( Unio) trigonus Lua, Syn., 1852, p. 25; 1870, p. 38. *Quadrula trigonad BAKER, Moll. Chicago, Pt. 1, 1898, p. 76, pl. xv, fig. 5. *Unio undatus CONRAD, New F. W. Shells, 1834, p. 72.—*Say, Am. Conch., VI, 1834, *Unio triangularis KUSTER, Conch. Cab. Unio, 1852, p. 56, pl. x11, fig. 3. * Unio pilaris REEV®, Conch. Icon., XVI, 1865, pl. xxvu, fig. 138. Entire Mississippi drainage; Coosa River, Alabama; Michigan and the Upper St. Lawrence drainage. tQUADRULA OBLIQUA Lamarck. *Unio obliqua LAMARCK, An. sans Vert., VI, 1819, p. 72.—* FERuSSAC, Guer. Mag., 1835, p. 28.—* DESHAYES, An. sans Vert, 2d ed., 1835, p. 534; 3d ed., II, 1839, p. 668. *Margarita (Unio) obliqua LEA, Syn., 1836, p. 20. *Unio obliquus HANLEY, Test. Moll., 1842, p. 186; * Biv. 1843, p.186, pl. xx, fig. 24.—* CaTLow and REEVE, Gonen! Nom., 1845, p. 61.—* KusTER, Conch. Cab. Unio, 1852, p. 63, pl. xv, fig. 1.—*ConrRaD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 253.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 495.—* CaLkIns, Pr. Ottawa Acad. Sci., 1874, p. 44.—* PaTEL, Conch. Sam., III, 1890, p. 161.— *CALL, Tr. Ac. Sci. St. Louis, VII, 1895, p. 31, pl. 1v. * Margarita (Unio) obliquus LEA, Syn., 1838, p. 17. *Margaron (Unio) obliquus LEA, Syn., 1852, p. 25; 1870, p. 38. *Unio undatus BARNES, Am. Jl. Sci., VI, 1823, p. 121, pl. Iv, fig. 4.—* HILDRETH, Am. Jl. Sci., XIV, 1828, p. 280.!—* Conrab, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 259. *Mya undata EATON, Zool. Text-Book, 1826, p. 219. *Unio mytiloides SHORT and Eaton, Transylvania J1., 1831, p. 74. * Unio cordatus CONRAD, Monog., V, 1836, p. 48, pl. xxv.—*KUSTER, Conch. Cab., te , p. 57, pl. xin, fig. 1.—*SowERBy, Conch. Icon., XVI, 1868, pl. nce, 376. LB. H. Wrieuat, Check List, 1888. Ohio, Cumberland, and Tennessee river systems; west in Tiere to the Mississippi; Ohioens, Alabama. t QUADRULA COCCINEA Conrad. *Unio coccineus CONRAD,? Monog., III, 1836, p. 29, pl. x11, fig. 1.—LEa, Tr. Am. Phil. Soc., VI, 1838, p. 12, pl. v, fig. 12; *Obs., II, 1838, p. 12, pl. v, fig. 12.— *“TROSCHEL, Arch. fiir. Naturg., V, 1839, Pt. 2, p. 234.—*HaNLEY, Test. Moll.. 1842, p. 203; *Biv. Shells, 1843, p. 203, pl. xxu1, fig.54.—*CaTLOoW and REEVE, 1This was figured by Hildreth, but the figures of this species and a number of others were left out by the editor. 2JIn the Transactions of the American Philosophical Society, VI, 1838, p. 12, pl. v, fig. 12, Lea described this species, and stated that about eighteen months previous Dr. Hildreth had sent him a single specimen under the name Unio coccineus; but there is nothing to show that Hildreth had described it. In the Monography in 1886, III, p. 29, pl. xm, fig. 1, Conrad describes this species under the same name, and also credits it to Hildreth, stating that it was in the collection of the Philadelphia Academy of Natural Sciences under that name. The°species must be credited to Conrad, who first described it, though Lea read his description in 1834. \ ~ NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. T89 Conch. Nom., 1845, p. 57.—*KustTER, Conch. Cab., 1852, p. 49, pl. x, fig. 2.— *ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 247.—* H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 492.—*CHENUv, Il. Conch., 1858, pl. xxv, figs. 4, 4a, 4b.—* SOwERBY, Conch. Icon., XVI, 1868, pl. xcrv, fig. 512.—*Canktns, Pr. Ottawa Acad. Sci., I, 1874, “aL 42.—*B. H. Wriaur, Check List, 1888,— *PasTEL, Conch. Sam., III, 1890, p. 148. * Margarita (Unio) coccineus LEA, Syn., 1836, p. 34; 1838, p. 23. * Margaron ( Unio) coccineus Lua, Syn., 1852, p. 35; 1870, p. 56. *Quadrula coccinea BAKER, Moll. Chicago, Pt. 1, 1898, p. 79, pl. xrv, fig. 1; x1x, fig. 3. * Unio rubens MENKE, Syn., Meth. Moll., 1828, p. 90. ~ * Unio catillus CONRAD, Monog., III, 1836, p. 30, pl. x1, fig. 2.—* Kusrer, Conch. Cab., 1852, p. 64, pl. xv, fig. 2.—*ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 246.—* Pare, Conch. Sam., ITI, 1890, p. 147. * Unio catilus B. H. WRIGHT, Gneck tise 1888. *Unio gouldianus WarD, ! Jay’s Catalogue, 3d ed., 1839, p: 24, * Unio cuneus Cau, Tr. Ac. Sci. St. Louis, VII, p. 1. tf QUADRULA COCCIENEA var. PAUPERCULA Simpson.? Entire Upper Mississippi drainage; St. Lawrence basin in various localities.. The peculiar dwarf variety which is found in this latter area seems almost entitled to specific rank. tQUADRULA SOLIDA Lea. Unio solidus LEA, Tr. Am. Phil. Soc., VI, 1838, p. 18, pl. v, fig. 13; *Obs., II, 1838, p. 13, pl. v, fig. 13.—*TrRoscHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 234.— *HANLEY,Test. Moll., 1842, p. 186; “Biv. Shells, 1843, p. 186, pl. xx1u1, fig. 15.— *CATLOW and REEVE, Conch. Nom., 1845, p. 64.—*H. and A. ApAms, Gen. Ree. Moll., II, 1857, p. 496.—*CuEnu, Ill. Conch., 1858, pl. xxv, figs. 2, 2a, 2b.—* KusTER, Conch. Cab., 1861, p. 258, pl. Lxxxvu, fig. 4.—* REEVE, Conch. Icon., XVI, 1865, pl. xxvu, fig. 133.—*CaLkins, Pr. Ottawa Acad. Sci., 1874, p. 45.—* B. H. Wrieut, Check List, 1888.—* Pa:rEL, Conch. Sam., III, 1890, p. 168. * Margarita (Unio) solidus LEA, Syn., 1836, p. 20; 1838, p. 17. * Margaron (Unio) solidus LEA, Syn., 1852, p. 25; 1870, p. 38. *2Unio cardiacea DESHAYES, Tr. Elem. de Conch., 1839, p. 19, pl. XxXx1, figs. 1, 2 * Unio fulgidus LEA,* Pr. Am. Phil. Soc., LV, 1845, p. 164; * Tr. Am. Phil. Soce., X, 1848 p. 73, pl. tv, fig. 10; *Obs., IV, 1848, p. 47, pl. 1v, fig. 10.—* Conran, Pr. Ac. N. Sci. Phila., VI, 1853, p. 249.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 495.—* B. H. WrieutT, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 253. * Margaron (Unio) fulgidus LEA, Syn., 1852, p. 25; 1870, p. 38. * Unio obovalis CONRAD, Pr. Ac. N. Sci. elie, VI, 1853, p. 253. Ohio, Cumberland, and Tennessee river systems; south to Louisiana ; west to Arkansas and Kansas; north to Minnesota; east, through Wis- consin, Illinois, and Indiana, to Ohio. tae nied by Dr. Tay on used in ih cpialon ue, but never iGudbeinea ie is a white nacred coccinea. >There is a dwarf form, greatly inflated and having the rest periods very plainly marked, found in the St. Lawrence and its tributaries near the Niagara Falls, which may bear the above varietal name. 5 There is only the type, a young shell, in Lea’s collection, and I have no hesitation in referring it to solidus, TIO PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. tQUADRULA PLENA Lea. * Unio plenus Lua, Tr. Am. Phil. Soc., I, 1840, p. 286; *Tr. Am. Phil. Soc., VIII, 1848, p. 211, pl. xiv, fig. 26; *Obs., III, 1842, p. 49, pl. x1v, fig. 26.—* ConrRaD, Proc. Ac. N. Sei. Phila., VI, 1853, p. 255.—*H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 495.—* Kuster, Conch. Cab., 1861, p. 264, pl. LXxx1Xx, fig. 3.—* SOWERBY, Conch. Icon., XVI, 1868, pl. LX1, fig. 305.—* B. H. WrieutT, Check List, 1888,— *PaTEL, Conch. Sam., III, 1890, p. 165. * Margaron ( Unio) plenus Lia, Syn., 1852, p. 25; 1870, p. 39. Ohio, Cumberland, and Tennessee riversystems; southwest to Kansas and Arkansas. QUADRULA FLEXUOSA Simpson. Holston River, Tennessee. Quadrula flecuosa SIMPSON, Proc. Ac. N. Sci. Phila., 1900, p. 83, pl. 11, fig. 8. t QUADRULA PYRAMIDATA Lea. *Unio pyramidatus LEA, Tr. Am. Phil. Soc., IV, 1834, p. 109, pl. xv1, fig. 39; * Obs., T, 1834, p. 119, pl. x v1, fig. 39.—* HANEY, Test. Moll., 1842, p. 186; * Biv. Shells, 1843, p. 186, pl. xx, fig. 45.—* DESHAYES, Traite Elem. de Conch., II, 1850?, p. 216, pl. xxx1, figs. 1, 2.— *CarLow and REEVE, Conch. Nom., 1845, p. 63.— “HA. and A. ApAMs, Gen. Rec. Moll., Il, 1857, p. 495.—*CuHENu, Ill. Conch., - 1858, pl. xvi, figs. 5, 5a, 5b.—* SowrErsBy, Couch. Icon., XVI, 1868, pl. LxIv, p, 323.—* B. H. Wrieut, Check List, 1888. “Margarita (Unio) pyramidatus Lua, Syn., 1836, p.21; 1838, p. 17. *Margaron (Unio) pyramidatus LEA, Syn., 1852, p. 25; 1870, p. 39. “Unio mytiloides DesHAYES, Enc. Meth., II, 1830, p. 586, pl. CCXLIX, fig. 4.— “Say, Am. Conch., Pt. 6, 1834.—* FERuUSSAC, 1835, p. 28.—* MOLLER, Syn. Noy. Gen., 1836, p. 209.—*Conrap, Monog., IV, 1836, p. 41, pl. xx.— “ SWAINSON, Treatise on Mal., 1840, p. 267, figs. 52-53.—~* CaTLow and REEVE, Conch. Nom., 1845, p. 61.—* Kustrer, Conch. Cab., 1852, p. 59, pl. x11, fig. 35 1861, p. 265, pl. Lxxx1x, fig. 4.—*B. H. Wrieut, Check List, 1888. *Margarita (Unio) mytiloides Lea, Syn., 1836, p. 21; 1838, p. 17. - *Margaron (Unio) mytiloides LEA, Syn., 1852, p. 25; 1870, p. 39. “Unio mytiloides Rafinesque var. pyramidatus PaTEL, Conch. Sai., III, 1890, p. 160.! “Unio cardiacea GUERIN, Icon. Regne Animal, 1829?, IT, pl. xXvuil, fig. 7. *Unio ruber CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 257. “Unio obliqua Woop, Ind. Test. rev., 1856, p. 200, pl. 1, fig. 8. Ohio, Cumberland, and Tennessee river systems; southwest to Arkansas; west to Nebraska?; north in the Mississippi to Wisconsin. (Group of Quadrula subrotunda. ) Shell solid, rounded, elliptical or ovate, with high beaks curved inward and forward over a distinct lunule; beak sculpture a few coarse ‘Most of the authors who use the name mytiloides believe it to be Rafinesque’s species, though they figure and describe the pyramidatus of Lea. The specimens in the Lea collection which Dr. Lea calls mytiloides Rafinesque, are evidently a form of his pyramidatus. Rafinesque’s figure represents a shell very long and almost straight on the posterior dorsal line, with astonishingly high beaks, and four dis- tinct, equally separated rays on the disk, and he says there are some oblique, black, longitudinal bands on the shell. The Rafinesquian shell seems as near to the Unio clava of Lamarck as anything, but it does not agree with that. NO. 12(5. SYNOPSIS OF THE NAIA DES—SIMPSON. 791 ridges curved up behind; posterior ridge feebly developed; epidermis brownish or blackish, and often painted with a few faint rays on the earlier shell which are disposed to break into squarish spots; hinge and teeth strong; secondary lateral in right valve well developed; beak cavities deep, compressed; muscle scars deep. Animal with ali four gills used as a marsupium throughout, filled with pink ova; gills large, inner only slightly the larger, free the greater part of their length; anal opening crenulate or papillose. tf QUADRULA BURSA-PASTORIS B. H. Wright. * Unio bursa-pastoris B. H. Wricut, Nautilus., IX, 1896, p. 133, pl. m1. Clinch and Powell rivers; Virginia and Tennessee. + QUADRULA KIRTLANDIANA Lea. * Unio kirtlandianus Lea, Tr. Am. Phil. Soc., V, 1834, p. 98, pl. xrv, fig.41; *Obs., T, 1834, p. 210, pl. xiv, fig. 41.—* Ferussac, Guer. Mag., 1835, p. 29.—* Han- LEY, Biv. Shells, 1843, p. 203, pl. xx, fig. 27.—* CarLow and REEve, Conch. Nom., 1845, p.60.—* Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 251.—* Kus- TER, Conch. Cab., 1856, p. 168, pl. xrx, figs. 2, 3; 1861, p. 214, pl. Lxxz, fig. 1.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 492.—*Sowrsy, Conch. Icon., XVI, 1868, pl. Lxxvu, fig. 402.—* B. H. Wriaut, Check List, 1888.—* PmTEL, Conch. Sam., III, 1890, p. 156. *Margarita (Unio) kirtlandianus Lea, Syn., 1836, p. 34; 1838, p. 23. * Margaron (Unio) kirtlandianus LEA, Syn., 1852, p. 35; 1870, p. 56. * Unio kirklandianus HANLEY, Test. Moll., 1842, p. 203. ! tf QUADRULA KIRTLANDIANA var. MINOR Simpson.? Ohio, Cumberland, and Tennessee river systems; southwest to Arkansas; north to Wisconsin?; east through southern Michigan. +t QUADRULA SUBROTUNDA Lea.? * Unio subrotundus LEA, Tr. Am. Phil. Soc., IV, 1831, p. I opls xavariie tow 45 Oose I, 1834, p. 127, pl. xvi, fig. 45.—* HaANLEY, Test. Moll., 1842, p. 203; * Biv. Shells, 1843, p. 203, pl. xx, fig. 58.—* CaTLow and REEvVs, Conch. Nom., 1845, p.64.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 492.—* ?CHENU, III. 1A typographical error no doubt. There is a Unio kirklandianus recently named by Wright. *A form is found in the Tennessee drainage which comes nearest, it seems to me, to the kirtlandianus of Lea, but is much smaller and more delicate, and is not so strongly colored. Mr. Wetherby believes this to be a form of the nearly allied subrotundus, but it seems to me too much compressed for that. Dr. Sterki is of the opinion that the two species should be united. While there are specimens which can hardly be determined, it seems to me that in the main the two are distinct. ' The small form may be called variety minor. >The name subrotunda was used by Rafinesque in 1820 for some species of Naiad, probably a member of the Circulus group which I can not determine, and placed in the genus Obliquaria by him. Conrad afterwards, in 1834, placed what he supposed was this species in the genus Unio. Lea applied the name subrotundus to his species in 1831, and being the first to use it for that genus, I think it will have to stand, and Conrad’s name become a synonym. 792 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Conch., 1858, pl. xv, figs. 1, 1a, 1.—* Kuster, Conch. Cab., 1861, p. 190, pl. Lx, fig. 3.—* B. H. Wrieut, Check List, 1888. *Margarita (Unio) subrotundus LEA, Syn., 1836, p. 34; 1838, p. 23. *Margaron (Unio) subrotundus Lua, Syn., 1852, p. 35; 1870, p. 56. * @ Unio brevialis CRoucH, Ill. Int. to Lamarck, 1827, p. 16, pl.1x, fig. 3.\—*? Cat- Low and REEVE, Conch. Nom., 1845, p. 56. *Unio personatus CONRAD, New F. W. Shells, 1834, p. 71. *Unio politus Say, Am. Conch., VI, 1834.2—* Frrussac, Guer. Mag., 1835, p. 28.— *ConrAD, Monog., VIII, 1837, p. 67, pl. xxxvu, fig. 2.—* KusTER, Conch. Cab. Unio, 1852, p. 62, pl. x1v, fig. 4.—*Conrap, Pr. Ac. N. Sci. Phila., VI, 1853, p. 255.—*SowERBy, Conch. Icon., XVI, 1866, pl. xxxu, p. 168.— *P#TEL, Conch. Sam., III, 1890, p. 164.° Ohio, Cumberland, and Tennessee river systems. Reported from Michigan and the Grand River, Ontario, but it is probable that the material from these localities is not subrotundus. + QUADRULA PILARIS Lea. * Unio pilaris LEA, Pr. Am. Phil. Soc., I, 1840, p. 285; Tr. Am. Phil. Soc., VIII, 1842, p. 209, pl. xrv, fig. 24; Obs., III, 1842, p.47, pl. xtv, fig. 24.—* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 255.—*H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 492.—*CHENU, I]. Conch., 1858, pl. xxIx, figs. 3, 3a, 3b.—* Kus- TER, Conch Cab., 1861, p. 255, pl. Lxxxvi, fig. 3.—* REEVE, Conch. Icon., XVI, 1865, pl. xxvul, fig. 138.—* B. H. Wricut, Check List, 1888.—* PHTEL, Conch. Sam., IIT, 1890, p. 163. _ * Margaron (Unio) pilaris LEA, Syn., 1852, p. 35; 1870, p. 56. t* Unio lesueurianus LEA, Pr. Am. Phil. Soc. I, 1840, p. 286; *Tr. Am. Phil. Soc., VIII, 1842, p. 195, pl. vu, fig. 6; *Obs., III, 1842, p. 33, pl. vim, fig. 6.— *ConrRaAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 251.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 492.—* CHENU, Il. Conch., 1858, pl. xxx, figs. 4, 4a, 4b.—*KustEeR, Conch. Cab. Unio, 1861, p. 215, pl. Lxxi, fig. 2.—*B. H. WriGuHt, Check List, 1888.—* PaTeEL, Conch. Sam., III, 1890, p. 157. * Margaron (Unio) lesueurianus Lea, Syn., 1852, p. 35; 1870, p. 56. Tennessee and Cumberland river sytems; Green River, Kentucky; reported from the Ohio River. tQUADRULA CUNEUS Conrad.! * Unio cuneus CONRAD, Monog., XII, 1840, p.105; pl. v1u1, fig. 1.—* B. H. WRIGHT, Check List, 1888. Arkansas; Louisiana; Sabine River, Texas. 1The figure looks something like subrotunda, or it may possibly be ebenus. I can not make out Lamarck’s brevialis (An. sans Vert., VI, 1819, p. 75), which he says came from the Isle de France. Sganzin was told by the people of the island that no Unio was found there (Mem. Hist. Nat. Strasb., III, 1846, p. 8). 2Merely listed by Say, but neither Lea nor I have been able to find that it was ever described by him. 3 Kirtland states that an oblique sulcation below the superior posterior angle dis- tinguishes the female of this species, as it does the retusus, from the male. I have not noticed it. 4Mr. Conrad states in the Monography that his shells came from the Little Red River, Arkansas. Our shells in the U. S. National Museum collection are from the same stream, but are not quite so solid, nor are they just the shape of the figure, yet I have no doubt that they are cuneus, NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 793 tQUADRULA EBENUS Lea. * Unio ebenus LEA, Tr. Am. Phil. Soc., IV, 1831, p. 84, pl. rx, fig. 14; * Obs., I, 1834, p. 94, pl. 1x, fig. 14.—*ConraD, New F. W. Shells, 1834, p. 69.—* HANLEY, Test. Moll., 1842, p. 202; *Biv. Shells, 1843, p. 202, pl. xx, fig. 47.—* CaTLow and REEVE, Conch. Nom., 1845, p. 58.—*H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 492:—*CHENU, II]. Conch., 1858, pl. xv, figs. 7, 7a, 7b.—* SOWERBY, Conch. Icon., XVI, 1868, pl. LXvI, fig. 334.—*CaLkins, Pr. Ottawa Acad. Sci., 1874, p. 42.—*B. H. Wricut, Check List, 1888.—*PareL, Conch. Sam., III, 1890, p. 151. *Margarita (Unio) ebenus LEA, Syn., 1836, p. 34; 1838, p. 23. *Margaron (Unio) ebenus LEA, Syn., 1852, p.35; 1870, p. 56. * Unio obovalis Say, Am. Conch., VI, 1834. * Unio obliquus CONRAD, Monog., IX, 1837, p. 77, pl. Xiu, fig. 2.—* KUSTER,Conch. Cab. Unio, 1861, p. 215, pl. Lxx1, fig. 4. * Unio mytiloides SwWAINSON, Treatise on Mal., 1840, p. 270, figs. 52, 53. Mississippi drainage generally except its western portion; Alabama and Tombigbee rivers; northeast Texas?. +QUADRULA GLOBATA Lea. * Unio gl.batus LEA, Pr. Ac. N. Sci. Phila., I, 1871, p.191; *Jl. Ac. N. Sci. Phila., VIII, 1874, p.5, pl.1, fig. 1; *Obs., XIII, 1874, p. 9, pl. 1, fig. 1.—* B.H.Wriaut, Check List, 1888. Holston and Tennessee rivers, Tennessee; Etowah River, Georgia. (Group of Quadrula glandacea.') Shell rhomboid-oval, nearly straight below and slightly biangulate behind, with a well-defined double posterior ridge; beaks probably - full; surface slightly and irregularly sulcate; epidermis wrinkled, tawny; hinge strong, the plate somewhat flattened; pseudocardinals triangular; laterals strong, secondary lateral of right valve well devel- oped; beak cavities deep, compressed; muscle scars very deep, smooth; nacre dirty straw color. tQUADRULA GLANDACEA Lea. *Unio glandaceus LBA, Pr. Ac. N. Sci. Phila.,V, 1861, p.59; *Jl. Ac. N. Sci. Phila., V, 1862, p.77, pl. 1x, fig. 226; *Obs., VIII, p. 81, pl. 1x, fig. 226.—* B. H. Wricut, Check List, 1888. * Margaron ( Unio) glandaceus LEA, Syn., 1870, p. 38. Coosa and Cahawba rivers, Alabama. 1T am somewhat at a loss to know where to place this group. The very limited amount of material I have seen is in a badly eroded condition. I can form no idea of the beak sculpture, and I have never seen the soft parts. The texture and coloring of all the shells I have seen are like those of Pleurobema, but the very deep beak cavities and the general form are like Quadrula. 794 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Section PACHYNAIAS Crosse and Fischer, 1893. (Type, Unio spheniopsis Morelet. ) Shell elongate-triangular, inflated, truncated above and rounded below in front, straight on the base, with a high, sharp posterior ridge; the post base slightly biangulate; beaks full, the sculpture consisting of apparently faint ridges which run parallel with the growth lines; whole surface distinctly concentrically ridged; epidermis without rays; pseudocardinals solid, stumpy, somewhat radiate, roughened; beak cavities rather deep; muscle scars deep, smooth; nacre bluish white, thicker in front. Animal unknown. +QUADRULA SPHENIOPSIS Morelet. * Unio spheniopsis MORELET, Test. Nov., I, 1849, p. 29.—* FIscHER and CROSSE, Miss. Sci., Pt. 7, II, 1894, p. 583, pl. LX1,. figs. 2, 2a, 2b. Rio Usumacinta, Guatemala. tQUADRULA RUGOSOSULCATA Lea. * Unio rugososulcatus Lea, Pr. Ac. N.Sci. Phila., X, 1866, p. 33; *J1. Ac. N. Sci. Phila., VI, 1868, p. 266, pl. xxxrv, fig.81; *Obs., XII, 1869, p. 26, pl. xxxiv, fig. 81.—* B. H.Wrieut, Check List, 1888. * Margaron (Unio) rugososulcatus LEA, Syn., 1870, p. 35. Central America. Subgenus ROTUNDARIA (Rafinesque, 182)) Simpson. (Type, Obliquaria tuberculata Rafinesque.) Shell rounded or quadrate, slightly truncate above in front; posterior ridge low; beaks prominent, curved inward and forward over a strongly marked lunule; beak sculpture consisting of numerous (20 to 30) fine, irregular, broken, somewhat concentric corrugations which extend well on to the second year’s growth and gradually blend with the regu- lar sculpture; posterior three-fifths of the shell tuberculate; epidermis brown; beak cavities very deep, compressed; nacre violet. Animal having the gills very large, inner very much wider in front, free the whole length from the abdominal sac; branchial opening immense, with many small papillae; anal opening very large, smooth; superanal opening not at all closed below.! (Group of Quadrula tuberculata.) Shell rounded, truncated behind, with a wide depression down the post slope. 1T regret that I have never been able to see gravid specimens of either of the species placed here. They are generally placed with the pustulusus group, but the strongly developed sulcus on the posterior slope and the very remarkable beak sculpture, which is not at all like that of any of our species, are good distinguishing characters. The enormous anal anil branchial openings, and the open superanal opening are characters of some value. No. 120. SYNOPSIS OF THE NAIADES—SIMPSON. 795 +t QUADRULA TUBERCULATA Rafinesque.! * Obliquaria (Rotundaria) tuberculata RAFINESQUE, Ann. Gen. Sci. Brux., V, 1820, p. 103. —* CHENU, Bib. Conch., 1st ser., III, 1845, p. 20. * Rotundaria tuberculata AGAssiZ, Arch. fiir Naturg., I, 1852, p. 48. *Unio tuberculatus CONRAD, New F. W. Shells, 1834, p. 72.—* Say, Am. Conch., VI, 1834.—* Ferussac, Guer. Mag., 1835, p. 28.—* CONRAD, Monog., V, 1836, p. 43, pl. xx11.—* KusTErR, Conch. Cab. Unio, 1852, p. 45, pl. 1x, fig. 1.—* REEVE, Conch. Icon., XVI, 1864, pl. 111, figs. 9, 12. *Unio verrucosus BARNES, Am. J1.Sci., VI, 1823, p. 128, pl. v, fig. 6.—* SuHortT and Eaton, Transylvania J1., 1831, p. 75.—* HaNLey, Test. Moll., 1842, p. 180; * Biv. Shells, 1843, p. 180, pl. x x1, fig. 24.—* CaATLow and REEVE, Conch. Nom., 1845, p.65.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 496.—* CaLkins, Pr. Ottawa Acad. Sci., 1874, p. 46.—* B. H. Wrieur, Check List, 1888.— *PXETEL, Conch. Sam., III, 1890, p. 171. * Margarita (Unio) verrucosus LEA, Syn., 1836, p.16; 1838, p. 15. * Margaron (Unio) verrucosus LEA, Syn., 1852, p. 22; 1870, p. 34. *Unio verrucosus purpureus HILDRETH, Am. Jl. Sci., XIV, 1828, p. 281. * Mya verrucosa EATON, Zool. Text Book, 1826, p. 216. *Quadrula verrucosa BAKER, Moll. Chicago, Pt. 1, 1898, p. 85, pl. xxu1. * Unio tuberculosa VALENCIENNES, Rec. Obs. Zool. Anat., II, 1833, p. 232. Mississippi drainage generally; southern Michigan; San Saba County, central Texas. +QUADRULA GRANIFERA Lea. *Unio graniferus LEA, Tr. Am. Phil. Soc., VI, 1838, p.69, pl. x1x, fig. 60; *Obs., II, 1838, p. 69, pl. XIx, fig. 60.—* TROSCHEL, Arch. fiir Naturg., V, 1839, Pt. 2, p. 237.—* HANLEY, Test. Moll., 1842, p. 180; *Biv. Shells, 1843, p. 180, pl. xxi, fig. 11.—* CaTLow and REEVE, Conch. Nom., 1845, p.59.—* CoNnRaD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 250.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 496.—* CuENu, Ill. Conch., 1858, pl. xxv, figs. 3, 3a, 3b.—* KUSTER, Conch. Cab. Unio, 1861, p. 212, pl. Lxx, fig. 4.—* REEVE, Conch. Icon,, XVI, 1864, pl. 1x, fig. 34.—*B. H. Wrieut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 154. *Margarita (Unio) graniferus LEA, Syn., 1838, p. 15. * Margaron (Unio) graniferus LEA, Syn., 1852, p. 22; 1870, p. 34. tQUADRULA GRANIFERA var. PUSILLA Simpson.’ Ohio, Cumberland, and Tennessee river systems; northwest to Iowa. 1 Rafinesque’s description is plainly that of one of the pustulous Uniones of the Ohio, and the statement that it is truncated posteriorly, wants nodules anteriorly, is three or more inches long, and has a violet nacre makes it certain that it is the verrucosus of Barnes. 2This form has been considered by many merely at best a variety of the tuberculata, and I have so regarded it. It has always a smaller and generally a more inflated shell, higher beaks, and usually a smoother, more olive-colored epidermis than the latter. Its nacre is ordinarily more copper colored than that of tuberculata. I believe with Mr. Wetherby that it is a valid species. 3A greatly dwarfed inflated form from the Green River at Mammoth Cave, Ken- tucky, may bear the above name. 796 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. (Group of Quadrula ostreata.) Shell rhomboid, incurved on the base, with a well-developed posterior ridge, somewhat biangulate behind; beak sculpture consisting of a number of fine, concentric ridges showing a tendency to be doubly looped, which gradually change, first to corrugations and then to pus- tules; pseudocardinals ragged, secondary lateral of right valve but slightly developed. Animal unknown. t QUADRULA OSTREATA Morelet. * Unio ostreatus MORELET, Test. Noviss., No. 1, 1849, p. 29.—* FISCHER and CROSSE, | Miss. Sci., Pt. 7, II, 1894, p. 573, pl. Lxii, fig. 3; Lxx, fig. 4. Rio Usumacinta, Guatemala. tQUADRULA USUMASINT4 Crosse and Fischer. * Unio usumasinte CROSSE and FISCHER, J. de Conch., XL, 1892, p. 294.—* FIscHER and Crosse, Miss. Sci., Pt. 7, II, 1894, p. 574, pl. ux1, fig.4; Lxvul, fig. 5. Rio Usumacinta, Guatemala. t QUADRULA GUATEMALENSIS Simpson. * Quadrula guatemalensis, SIMPSON, Pr. Acad. N. Sci. Phila., 1900, p. 83, pl. 1, fig. 4. Rio Usumacinta, Guatemala. (Group of Quadrula percompressa.) Shell large, triangular to rhomboid, greatly compressed throughout, with a low posterior ridge and a slight secondary ridge above it, mak- ing the shell slightly biangulate posteriorly; beaks very prominent, flat- tened; beak sculpture not seen; surface of the disks covered with rather fine, somewhat lachrymose nodules, corrugate wrinkled on the posterior slope;' cavity of the beaks enormously deep and compressed ; area outside the palleal line wide in front; shell thickened anteriorly. “tQUADRULA PERCOMPRESSA von Martens. “Unio percompressus VON MARTENS, Sitzungs Ber. Nat. Tr. 1887, p. 107.— * FISCHER and CRossE, Miss. Sci., Pt. 7, Il, 1894, p. 576; Biologia Cent-Am. Mollusca, 1900, p. 496, pl. xxxu1, figs. 1-3. Rio de las Salinas, Guatemala. Subgenus LAMPROTULA Simpson, 1900. (Type, Chama plumbea Chemnitz.) Shell rounded to triangular, inflated, with high beaks; beak sculpture consisting of a few coarse, subparallel ridges which are slightly doubly ' Only two left valves of this remarkable species have been seen by the writer, both of which curve to the left in front and to the right behind. It is probable that others may turn to the right, and von Martens’ shells are flat. pan NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 197 looped; surface of the shell generally covered with coarse nodules or knobs; posterior slope radially ridged; epidermis dark; two strong laterals in each valve, all vertically striated; cavity of the beaks deep and compressed; nacre mostly whitish, usually radially granularly striated outside the pallial line, having one or more peculiar calluses behind and below the laterals which are iridescent and granularly striate. Animal unknown.! (Group of Quadrula plumbea.) Shell rounded, slightly angulated behind the ligament, solid, moder- ately inflated, covered with coarse pustules, and having broken, up- curved corrugations on the posterior slope; epidermis light brownish; hinge rather strong, somewhat flattened; laterals vertically striated.’ QUADRULA PLUMBEA Chemnitz. *Chama plumbea CHEMNITZ, Conch. Cab., NObp WCE, Wa 2a, Tolle CKorbny, sets, IAL 1992.—* Dititwyn,.Cat. I, 1817, p. 215.—* Woop, Ind. Test. Rev., 1856, p. 52, pl. 1x, fig. 6. Unio plumbeus FERUSSAC, Guer. Mag., 1835, p. 28.—* KusTER, Conch. Cab. Unio., 1862, p. 289, pl. xcvil, figs. 1, 2. South East Asia, probably. The locality, ‘South Sea,” given by Chemnitz is, no doubt, erroneous. e tQUADRULA COREANA von Martens. *Unio coreanus VON MARTENS, S. B. Nat. Fr., 1886, p. 78.—* Pa:TEL, Conch. Sam., Ila, 1890, p. 149. Soul, Korea. (Group of (. nodulosa.) Shell very solid, oval or rounded, inflated, inequilateral, inequivalve, the valves more or less twisted on their axis or having the appearance as if one of them had been pushed forward on the other, so that a dorsal view shows the outline to be rhomboid; each valve with a posterior ridge, that on the valve pushed forward less developed; beaks high, full, apparently sculptured with a few coarse irregular ridges; posterior slope usually having strong, radiating, upcurved ridges; hinge plate generally wide and flattened; pseudocardinals heavy, somewhat radiate, often with the sockets evenly, radially grooved; laterals strong, heavily vertically ridged; secondary lateral of right valve well developed, ' A group of peculiar and striking species which presents a number of quite diverse forms. On account of this diversity, the fact that the beak sculpture is rarely pre- served, and that nothing is known of the anatomy, the group is a difficult one to arrange. 2A single, rather young, dead, and somewhat decayed specimen of what I believe is Q. coreana, from Séul, Korea, belonging to the collection of F. Stearns has been examined by the writer. The Chama plumbea of Chemnitz seems to be near it, but is solider and shorter. 798 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. anterior cicatrices small, deep, posterior shallow; cavity of the beaks enormously deep, compressed; dorsal cicatrices on the under side of the shelf. Animal unknown. t QUADRULA TORTUOSA Lea. * Unio tortuosus Lua, Pr. Ac. N. Sci. Phila., IX, 1865, p.76; *Jl. Ac. N. Sci. Phila., VI, 1868, p. 286, pl. XxxIx, fig. 98; *Obs., XII, 1869, p. 46, pl. xxxIx, fig. 98. * Margaron (Unio) tortuosus LEA, Syn., 1870, p. 30. t * Unio (Lampsilis) subtortus BAIRD and ADAMS, Proce. Zool. Soc. Lond., 1867, p. 491, pl. xxvI, figs. 1, la. : * Unio subtortus SOWERBY, Conch. Icon., XVI, 1868, pl. LXxxvul, fig. 465.— * HEUDE, Conch. Fluv. Nank., VIII, 1883, pl. Lx1, fig. 119.—* Pa1ren, Conch. Sam., III, 1890, p.169. * Unio retortus HEUDE, Conch. Fluv. Nank., VIII, 1883, pl. Lv, fig. 109.—*P£TRL, . Conch. Sam., ITI, 1890, p. 165. -China. tQUADRULA TIENTSINENSIS Crosse and Debeaux. * Unio tientsinensis CROSSE and DEBEAUX, J]. de Conch., III, 1863, p. 257, pl. x, fig. 1.—* SowrRBy,Conch. Icon., XVI, 1868, pl. xct, fig. 514, 514a, 5146.—* PmTEL, Conch. Sam., III, 1890, p. 169. * Margaron (Unio) tientsinensis LEA, Syn., 1870, p. 30. China. QUADRULA ZONATA Heude. * Unio zonatus HEUDE, Conch. Fluv. Nank., VIII, 1883, pl. Lx1.—*PaTEL, Conch. Sam., III, 1890, p. 172. * Unio tientsinensis HEUDE, Conch. Fluv. Nank., VIII, 1883, pl. Lx, fig. 118. China. +QUADRULA FIBROSA Heude. * Unio fibrosus HuupE, Conch. Fluv. Nank., II, 1877, pl. x1, fig. 22.\—*Pa&TEL, Conch. Sam., III, 1890, p. 152. *+ Unio spurius Hrupr, Conch. Fluv. Nank., Il, 1877, pl. x1, fig. 22.—* PHTEL, Conch. Sam., III, 1890, p. 168. China. +QUADRULA NODULOSA Wood. * Mya nodulosa Woop (part), Gen. Conch., I, 1815, p. 106, pl. x x11, figs. 1, 2.2— *DILLWYN, Catalogue I, 1817, p. 52.—* Woop, Index Test, 1825, p. 12, pl. II, fig. 29b; *Index Test. Rev., 1856, p. 16, pl. u fig. 29. * Unio nodulosus HANLEY, Test. Moll., 1842, p. 180.—* Biv. Shells, 1843, p. 180.— *CaTLow and REEVE, Conch. Nom., 1845, p. 61.—* H. and A. ADaAMs, Gen. 1 Doubtfully distinct from zonata. 2 Wood gives four figures; the first and second being a solid, nodulous, Chinese species; the third and fourth seem to be Unio pictorum. Lamarck used the name nodulosa for a Unio (An. sans Vert., VI, 1819, p. 78), and refers to the Encyclopedie Méthodique, 1797, pl. 248, fig. 19, and this figure is no doubt that of Unio pictorum. Wood seems to have confounded the two. NO. 1205. SYNOPSIS OF THE NAITADES—SIMPSON. 799 Rec. Moll., I], 1857, p. 496.—* SowERBY, Conch. Icon., X VI, 1868, pl. Lxxx1u, fig. 489.—* PwTEL, Conch. Sam., III, 1890, p. 161. * Margarita (Unio) nodulosus Lra, Syn., 1836, p. 16; 1838, p. 15. * Margaron (Prisodon) nodulosus LEA, Syn., 1852, p. 27; 1870, p. 27. * Castalia nodulosa H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 509. t Unio grandidens Lra,!' Pr. Ac. N. Sci. Phila., V, 1862, p. 168; *J1. Ac. N. Sci. Phila., V, 1862, p. 205, pl. xxx, fig. 274; *Obs., IX, 1863, p. 27, pl. xxx, fig. 274. * Margaron (Unio) grandidens Lea, Syn., 1870, p. 34. China. QUADRULA KOUANGENSIS Simpson.? * Unio moreletianus HEUDE, Conch. Fluy. Nank., VIII, 1883, pl. Lx, fig. 117.—* Pas- TEL, Conch. Sam., ITI, 1890, p. 160. Kouang-te-tcheou, China. tQUADRULA POLYSTICTO-SCRIPTUS Heude. * Unio polysticto-scriptus HEUDE, Conch. Fluy. Nank., II, 1877, pl. x1m, fig. 26.— * P HTEL, Conch. Sam., III, 1890, p. 164. "Unio scripto-polystictus HEUDE,* Conch. Fluyv. Nank., IT, 1877, pl. x1, fig. 27. *Unio seripto-polystrictus P&TEL, Conch. Sam., III, 1890, p. 167. China. + QUADRULA POLYSTICTUS Heude. *Unio polystictus HEUDE, Conch. Fluy. Nank., II, 1877, pl. x11, fig. 25.—* PasTRL, Conch. Sam., III, 1890, p. 164. China. +QUADRULA SIMILARIS Simpson. *Unio afinis HeupE, Conch. Fluy. Nank., I, 1875, pl. 111, figs. 7, 7a.1—* Pa&TEL, Conch. Sam., ITI, 1890, p. 144. China. +QUADRULA MICROSTICTIS Heude. * Unio microstictis, HEUDE, Conch. Fluy. Nank., II, 1877, pl. xu, fig. 24; *Jahrb. Deutsch, Mal. Ges., VIII, 1881, p. 122.—* Pare, Conch. Sam., ITI, 1890, p. 159. China. (Group of Quadrula rochechouarti.) Shell rhomboid, with a strong posterior ridge, rounded before, incurved below, and somewhat biangulate on the posterior base, with very strong folds on posterior slope which begin on the posterior ridge as ‘A single valve (the type) is in the Lea collection, and an opposing matched valve isin that of the U.S. National Museum. Dr. Lea states that they were obtained near Hot Springs, Arkansas, by Major Byrd Powell. I am certain this is a mistake, and that it is a Chinese species. It agrees exactly with Wood’s figure of nodulosa, is slightly pushed over or twisted on its axis, and has the vertically ridged laterals characteristic of the heavy Chinese forms very strongly developed. 2 Heude’s name moreletianus has been twice preoccupied. 3 Believed by Heude to be a hybrid with polysticto-scriptus. I can not see that the two differ sufficiently to be separated. 4The name affinis was used long before by Dr. Lea for a Unio. 800 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXIt. knobs; surface strongly pustulous; beaks rather well forward, sculpture not seen; epidermis concentrically wrinkled, black and rough; pseudo- cardinals strong, somewhat radial, rough, striate; laterals more or less vertically striate, secondary lateral in right valve well developed; beak cavities very deep, compressed; posterior calluses faint. Animal unknown. + QUADRULA ROCHECHOUARTI Heude. “Unio rochechouarti HEUDE, Conch. Fluy. Nank., I, 1875, pl. v, fig. 13; “Jahrb. Deutsch. Mal. Ges., VIII, 1881, p. 122.—*PasTEL, Conch. Sam., III, 1890, p. 165. China. (Group of Quadrula triclawa.) Shell solid, elongate triangular, obtusely pointed at the posterior base, with a decided posterior ridge, along which runs a row of pon- derous knobs; beaks high and far forward; surface strongly nodulous; posterior slope slightly corrugated; epidermis dark chestnut; pseudo- cardinals heavy, subradial, radially striate; laterals vertically striate, secondary lateral of right valve well developed; cavity of the beaks enormously deep and compressed; a granular callus behind the late- rals; nacre silvery, radially granularly striate outside the pallial line. +QUADRULA TRICLAVA Heude. * Unio triclavus HEUDE, Conch. Fluy. Nank., II, 1877, pl. x, figs. 21, 2la.—* PATEL, Conch. Sam., III, 1890, p. 170. China. (Group of Quadrula bazint.) Shell elongate-trigonal, with a fairly well developed posterior ridge, pointed behind; beaks not high, almost at extreme front of the shell; surface more or less covered with knobs and tubercles, which show a tendency to an arrangement in curved lines; epidermis chestnut to blackish; hinge strong; pseudo-cardinals radial, radiately striate; lat- erals granular, showing traces of vertical striation; beak cavities very deep, compressed; nacre silvery. Animai unknown. tQUADRULA BAZINI Heude. * Unio bazinti HrupE, Conch. .Fluy. Nank., I, 1877, pl. 1x, fig. 20.—* P TEL, Conch. Sam., III, 1890, p. 145. China. (Group of Quadrula leat.) Shell obovate, obtusely pointed behind; posterior ridge low; whole surface generally tuberculate or knobbed, with strong, radial, curved No. 1205. SYNOPSIS OF THE NAIA DES—SIMPSON, 801 ridges on the posterior slope; beaks rather low, the sculpture coarse, irregular, broken bars, somewhat doubly looped and swollen on the posterior ridge, with strong, radiating ridges behind them; pseudocar- dinals solid, often compressed in the direction of the axis of the shell; laterals granular; beak cavities moderately deep; one or more granular calluses behind the laterals; nacre white or lurid, slightly radially granular outside the pallial line. Animal unknown. tQAUDRULA LEAI Gray. *Unio leai GRAY, Griff. Cuvier, XII, 1834, p. 600 (index), pl. xx1, fig. 1.'—* CATLow and REEVE, Conch. Nom., 1845, p. 60.—~ BENson, J1. As. Soc. Calcutta, XXIV, 1855, p. 136 (p. 18, reprint).—* H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 496.—* KusTER, Conch. Cab. Unio, 1861, p. 232, pl. Lxxvuil, fig. 3.—* ? HeuDE, Conch. Fluv. Nank., I, 1875, pl. 1v, fig. 10, pl. vi.—* GREDLER, Jahrb. Deutsch, Mal. Ges., VIII, 1881, p. 122.—* von pane Sitzber. Nat. Fr., 1885, p. 77.— * PATEL, comer Sam., III, 1890, p. 157 * Margar ita (Unio) leatt Esa Syn., 1856, p. AT; 1838, p. 16. * Margaron ( Unio) leait LEA, Syn., 1852, p. 23; 1870, p. 34. *Unio leeai HANLEY, Biy. Shells, 1843, p. 182, pl. xxu1, fig. 5 *Unio nodulosus REEVE, Conch. Icon., XVI, 1864, pl. 1x, fi ae ig. 32, tQUADRULA LEAT var. LELECI Heude. * Unio lelecti HEUDE, Conch. Fluv. Nank, I, 1875, pl. ry, fig. 12 ‘LER, Jahrb. Deutsch, Mal. Ges., VIII, 1881, p. 122 *Unio vichthofent VON MARTENS, 8. B. Nat. Fr. 1875, p.3; Mal. Blatt, XII, 1875, p. 187; Nov. Conch., IV, 1876, p. 156, pl. cxxxvi, figs. 1-3.—2?*PaTEL, Conch. Sam., III, 1890, p. 165. * Unio leai var. lelecti P& TEL, Conch. Sam., III, 1890, p. 157. ; V, fig. 14.—GRED- China; Tonkin; Mekong [iver. QUADRULA OVATA Simpson. Unio vestitus var. a HEUDE, Conch. Fluy. Nank., VIII, 1883, pl. yvit, fig. 112; Lrx, fig. 116.3 QUADRULA CAVEATA Heude... * Unio caveatus HEUDE, Conch. Fluv. Nank., II, 1877, pl. xxiv, fig. 53.—* PTE, Conch. Sam., III, 1890, p. 147. * Unio contritus HEUDE, Conch. Fluv. Nank., VII, 1881, pl. Lv1, fig. 103.—* Pa rst, Conch. Sam., III, 1890, p. 148. * Unio quadrangulosus HEUDE, Conch. Fluy. Nank., VII, 1881, pl. Lv1, fig. 104.— *Pa TEL, Conch. Fluv. Nank., III, 1890, p. 164. China. 'A very brief description is given in the index. Von Martens, in a note at the close of Vol. IV, places his species in the synonymy of U. lelect Heude. 1am satisfied that leleci is but a variety of U. leai Gray. * Heude’s name is preoccupied by Lea for a Unio, I therefore change it as above. Proc. N. M. vol. xxii——51 802 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL. XXII. tQUADRULA CORNUUM LUN Heude.! *Uaio montanus Heupr, Conch. Fluy. Nank., I, 1875, pl. 1v, fig. 11.—* Pret, Conch. Sam., III, 1890, p. 159. *Unio cornuum-lune HmrUDE, Conch. Fluv. Nank., VIII, 1883, pl. nvn, fig. 105.— ~ PaTEL, Conch. Sam., III, 1890, p. 149. * Unio trisulcatus HEUDE, Conch. Fluy. Nank., VIII, 1883, pl. Lv, fig. 108. *Unio paschalis HEUDE, Conch. Fluv. Nank., VIII, 1888, pl. Lyi, fig. 110.— *PaTEL, Conch. Sam,, III, 1890, p. 162. *Unio verruculosus HeupE, Conch. Fluy. Nank., VIII, 1883, pl. Lvmt, fig. 111.— *PmTEL, Conch. Sam., III, 1890, p. 171. *Unio abortivus HEUDE, Conch. Fluv. Nank., VIII, 1883, pl. x11, fig. 124. *Unio monticola HEuUDE, Jl. de Conech., XXXII, 1884, p. 19. QUADRULA CORNUUM LUM£Z var. CINNAMOMEUS Gredler. *Unio leai var. cinnamomeus GREDLER, Jahrb. Deuts. Mal. Ges., VIII, 1881, p. 122, pl. vi, fig. 16.2—* PaTeL, Conch. Sam., III, 1890, p. 157. China. QUADRULA SCRIPTA Heude. * Unio scriptus HEUDE, Conch. Fluy. Nank., I, 1875, pl. 111, figs. 8, 8a.—* Pa TEL, Conch. Sam., ITI, 1890, p. 167. China. QUADRULA DIVERGENS Benson. Unio divergens BENSON, Jl. As. Soc. Beng., X XIX, 1855, p. 137.3 Chusan Island, China. Subgenus DISCOMYA Simpson, 1900. Shell subsolid, round obovate or subrhomboid, lenticular, rather com- pressed, widely, faintly biangulate behind, with scarcely any vestige of a posterior ridge; beaks very low, sculpture not seen; front half of the shell densely covered with fine pustules arranged in curved rows in two directions as if engine chased, over which the epidermis is wrinkled. The hinder half is covered with fine, radiating and undulating corru- gations, curved upward posteriorly, which are slightly nodulous and show through on the inside of the shell; one slightly compressed pseudo- cardinal in the right valve and two in the left; one delicate, curved 1 Virst called montanus by Heude, which was several times preoccupied in Unio. 2Gredler makes this a variety of leai, but I believe it is a rather finely sculptured form of monticola. ‘The species varies much in the size of pustules and the degree of its smoothness, and Heude has exalted all these variations to the rank of species. I think it probable that when a large amount of material can be examined it will be found necessary to reduce some of the Chinese forms I have considered as species to the rank of varieties, or even to the synonymy. ° Benson says this is not very distantly related to Unio wndulatus Barnes. It has never been figured, so far as I know, but from all I can learn of it it belongs in this group and may be Q. leai. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 803 lateral in the right valve and two in the left; beak cavities deep, com- pressed; nacre lurid; palleal line showing a slight posterior sinus.! (Type, Unio radulosus Drouet and Chaper. ) + QUADRULA RADULOSA Drouet and Chaper. *Unio radulosus DROUET and CHAPER, Mem. Soc. Zool. Fr., V, 1892, p. 150, pl. v, figs. 10-12.-—*J1. de Conch., XLI, 1893, p. 41. +QUADRULA RADULOSA var. RHOMBOIDEA Simpson.’ Borneo. The relationship of the following is uncertain. UNIO NEWENHUISI Schepman. *Unio newenhuisi SCHEPMAN, Notes Leyd. Mus., XX, 1898, p.92, pl.1, figs. 1, 2.— *DROUET, Jl. de Conch., 1899, p. 406. Borneo. May be related to Unio radulosus Drouet and Chaper. Genus SHISTODESMUS Simpson, 1900. (Type, Unio lampreyanus Baird and Adais. ) Shell rather solid, triangular, inflated, truncate above in front, some- what swollen just behind the center of the base, pointed behind; beaks high; beak sculpture not seen; surface thrown up into strong, very wide, concentric ridges, one or two with each season’s growth, and pinched up in the central part to form a radiate row of compressed knobs or spines; epidermis shining, greenish-yellow or brownish, having marvelously delicate, concentric, microscopic lire, often painted with a few elegant, broken, green rays; there is one large, high, triangular pseudocardinal in the left valve under the beak, a deep, triangular pit in front of it, with an erect, radial lamellar tooth in its center, and a high, lamellar, curved tooth in front of the pit, parallel with the edge of the shell connected with the central tooth. A heavy triangular bifid or trifid pseudocardinal in the right valve stands close to the anterior edge of the shell and is separated from it by a deep, compressed pit; behind this tooth, deep down at its base, is a narrow shelf, and back of this the entire hinge plate is cut out in a deep sinus to the beak; two laterals in each valve; cavity of the beak in left valve deep, somewhat compressed; in the right entirely opened by the sinus; muscle scars sual, geek, smooth; pallial line with a sinus at its posterior end; a aT aoe nothing of ‘he eae We his curious Naiad, SanGn seems to show some relation to such species as Quadrula microstictus and related forms. I place it in Quadrula with doubt. 2 There is 1 specimen in the U. S. National Museum marked Unio radulosus Drouet and Chaper, from Borneo, which is quite rhomboid and but slightly sculptured on the body, though it is plicate behind, which may bear the above name, It is prob- ably a valid species. 804 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL beautiful, granularly striate callus is developed behind the laterals; nacre finely, often bifurcately radiate striate outside the parallel line. Animal unknown. + SHISTODESMUS LAMPREYANUS Baird and Adams. * Unio( Dysnomia)lampreyanus, BAIRD and ADAMS, Proc. Zool.Soc. Lond., 1867, p.491, pl. xxv1, figs. 2, 2a.—* SowERBY, Conch. Icon., XVI, 1868, pl. LXxxvit, fig. 469.—* HEUDE, Conch. Fluy. Nank., VII, 1883, pl. Lrx, figs. 114, 114a, 114b.— *Pm#HTEL, Conch. Sam., III, 1890, p. 156. Margaron (Unio) tampreyanus LEA, Syn., 1870, p. 30. SHISTODESMUS SPINOSUS Simpson. Unio vestitus var. 6, HEUDE, Conch. Fluy. Nank., VIII, 1883, pl. L1x, fig. 115.! Genus GIBBOSULA Simpson, 1900. (Type, Mya crassa Wood.) Shell very solid, inequilateral, triangular-elliptical, arcuate, pointed behind, with a low, well-marked posterior ridge; beaks rather high; beak sculpture not seen; posterior two-thirds of the shell covered with somewhat radiating corrugations and nodules; posterior slope having strong subradial folds; epidermis dark; hinge plate very wide; pseudo- cardinals not large, stumpy, rough; laterals very heavy, club shaped; beak cavities enormously deep and compressed; anterior cicatrices rather shallow, rough in the bottom; posterior cicatrices deep and dis- tinct; a strong rib runs from the front part of the beak cavity toward the posterior base; nacre whitish. Animal unknown. +t GIBBOSULA CRASSA Wood. * Mya crassa Woop, Gen. Conch., 1815, p. 106, pls. Xx, xx1;? *Ind. Test., 1825, p. 12, pl. 11, fig. 28b; *Ind. Test. Rev., 1856, p. 16, pl. 11, fig. 28. * Mya ponderosa DiLLWyNn, Dili. Cat., I, 1817, p. 51. * Margarita Unio ponderosus LEA, Syn., 1836, p. 14; 1838, p. 14. * Unio ponderosus HANLEY, Test. Moll., 1842, p. 177; * Biv. Shells, 1843, p. 177.— *CaTLow and REEVE, Conch. Nom., 1845, p. 63.—* H. and A. Adams, Gen. Rec. Moll., II, 1857, p. 497. * Margaron (Unio) ponderosus LEA, Syn., 1852, p. 21; 1870, p. 32. China. Genus CUNEOPSIS Simpson, 1900. (Type, Unio celtiformis Heude.) Shell solid, elongated, wide and truncate or rounded in front, taper- ing to a point behind; often twisted on its axis and curved to the right ‘Heude made this a variety of his Unio vestitus (which I have placed in Quadrula. Iam satisfied that this is a Shistodesmus and distinct from lampreyanus, as it seems to have spines instead of knobs. His name vestitus is preoccupied in Unio by Lea.) 2The name crassus had been previously applied to a Unio by Retzius, but as Wood’s species was never placed in Unio under the specific name crassus, his name may be used. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 805 or left; beaks rather high, anterior; beak sculpture apparently a few coarse, subparallel nodular ridges curved up behind; posterior ridge low, close to the hinge line, and in front of it the shell is full; surface slightly, irregularly, concentrically striate; epidermis dark, having a peculiar, dull, silky luster; hinge rather narrow; pseudocardinals two in the left valve immediately under the beak, the anterior compressed, high and nearly parallel with the outer edge of the shell, the posterior heavy, joined to the anterior above, with a deep, triangular cavity between; right valve with one large, triangular, anterior pseudocardinal with a deep, triangular pit back of it, and often a small, low, com- pressed tooth behind the pit; laterals granularly striate, beak cavities rather deep; anterior muscle scars deep, rough at the bottom; poste- rior scars large, long and oblique; nacre silvery, sometimes radially striate at the edge; palleal line indented into a sinus at its posterior end, above which is a granular, striate callus. Animal unknown. +CUNEOPSIS CAPITATUS Heude. * Unio capitatus HEupDE, Jl. de Conch., XXII, 1874, p.114; * Conch. Fluy. Nank.,I, 1875, pl. 11, fig. 5.—* P&#TEL, Conch. Sam., ITI, 1890, p. 147. China. +CUNEOPSIS HEUDEI Heude. *Unio heudei HevuDE (Bazin manuscript), Jl. de Conch., XXII, 1874, p. 114.— *PAZTEL, Conch. Sam., III, 1890, p. 155. “Unio corderit HEUDE, Conch. Fluy. Nank., I, 1875, pl. 1, fig. 3.:\—* Parr, Conch., Sam., IIT, 1890, p. 149. China. +CUNEOPSIS CELTIFORMIS Heude. “Unio celtiformis HEUDE, J]. de Conch., XXII, 1874, p. 113; Conch. Fluv. Nank., I, 1875, pl.1, fig. 4. —* Pa TEL, Conch. Sam., III, 1890, p. 147. China. tCUNEOPSIS PISCICULUS Heude. * Unio pisciculus HEUDE, JI. de Conch., XXII, 1874, p. 115; *Conch. Fluy. Nank., I, 1875, pl. 1, figs. 6, 64.—* PazTEL, Conch. Sam., III, 1890, p. 163. “Unio retortus VON MARTENS, Sitzber. Ges. Nat. Fr., 1875, p.4; *Mal. Blatt., XXII, 1875, p. 188; Nov. Conch., IV, 1876, p. 158, pl. CxxxvV1, figs. 3, 4.2—*P2TEL, Conch. Sam., III, 1890, p. 165. China. + CUNEOPSIS RUFESCENS Heude. “Unio rufescens HrupE, Jl. de Conch., XXII, 1874, p. 118; Conch. Fluv. Nank., 1, 1375, pl.1, fig. 2.—* PaTEL, Conch. Sam., ITT, 1890, p. 166. China. ‘Changed to corderi by Heude in above reference. > Von Martens places this in the synonymy of U. pisciculus in Vol. IV of the Nova- tites Conchologia. 806 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 3X11 Subfamily HY RIAN 4) Swainson. (ENDOBRANCHI4:,) Male and female shells alike, with beak sculpture radial or zigzag- radial; marsupium occupying the inner gills only. (ROSANORHAMPHUS.) Beak sculpture zigzag-radial. Genus NODULARIA Conrad, 18858. (Type, Unio douglasiw Gray.') Nodularia Conrad, Pr. Ac. N. Sci. Phila., 1853, p. 268. Shell elliptical to elongated, pointed behind about midway up from the base, the post-basal part produced; beak sculpture variable, irregu- larly zigzag-radial, often breaking into nodules, and extending in many cases over a part or all of the disk; right valve with two usually com- pressed pseudocardinals, one above the other, the lower the more ele- vated, separated by a parallel-sided socket, and having one lateral; left valve with two compressed pseudocardinals, both in front of the beaks, and two laterals; cavity of the beaks moderate, not compressed, anterior muscle sears deep, posterior shallow, nacre white. Animal (of N. japanensis and N. equitoria) having the inner gills alone filled throughout their entire length with ova, forming a pad-like marsupium, united to the abdominal sac or free from it. Section LANCEOLARIA Conrad, 1853, (Type, Unio grayanus Lea.) Shell ensiform, solid, with a distinct, pinched-up posterior ridge, rounded in front, the posterior end sharp and generally turned a little to the right or left; beaks low, their sculpture nodulous, zigzag, often extending more or less over the surface; pseudocardinals rather stumpy, ragged, striate above, smooth below; anterior muscle scars distinct, the upper round, very deep, appearing as if bored out. Animal unknown. +t NODULARIA GRAYANA Lea. * Unio grayanus Lea, Tr. Am. Phil. Soc., V, 1834, p. 66, pl. 1x, fig. 26; Obs., I, 1834, p. 178, pl. 1x, fig. 26.—* REEVE, Conch. Syst., I, 1841, p. 118, pl. LXXXVIU, fig. 4.--* HANLEY, Test. Moll., 1842, p. 177; Biv. Shells, 1843, p. 177, pl. xxiv, fig. 5.—* CaTLow and REEVE, Conch. Nom., 1845, p. 59.— *KusTER, Conch. Cab. Unio, 1856, p. 167, pl. xiv, fig. 5.—* H. and A. 1A large genus of generally rather small species, very abundant in individuals, and distributed from the Amoor River throughout the mainland of all southeastern Asia and all of Africa except the region bordering on the Mediterranean. Some ot the African species are so close to Asiatic forms of the cwruleus group that they can hardly be separated specifically. NO. 1205. ‘ SYNOPSIS OF THE NAIADES—SIMPSON. 807 ApAMS, Gen. Ree. Moll., II, 1857, p. 497.—* CuHENU, Man., 1859, II, p. 142, tig. 700.—* REEVE, Conch. Icon., XVI, 1865, pl. xxv, fig. 191.—* HrupE, Conch. Fluv. Nank., II, 1877, pl. x v1, fig. 36.—* Pa TEL, Conch. Sam., III, 1890, p. 154. * Margarita (Unio) grayanus LEA, Syn., 1838, p. 14. * Margaron (Unio) grayanus LEA, Syn., 1852, p. 21; 1870, p. 32. *Unio grayit GRIFFITH, Grif. Cuv., XII, 1834, pl. x x1, fig. 3.! China. t+NODULARIA GLADIOLUS Heude. * Unio gladiolus HEUDE, C. Fluy. Nank., II, 1877, pl. Xv1, fig. 35.—* P&TEL, Conch, Sam., IIT, 1890, p. 154. China. +NODULARIA TRIFORMIS Heude. * Unio triformis Heupe, Conch. F. Nank., II, 1877, pl. Xvt, fig. 34. * Unio distortus HEupE, Conch. F. Nank., VIII, 1883, pl. Lx, figs. 122, 122b.— *PHETEL, C. Sam., III, 1890, p. 151. China. +NODULARIA OXYRHYNCHUS von Martens. * Unio oxyrhynchus VON MARTENS, Mal. Blatt, VII, 1861, p. 57.—* KoBELT, Abh. Senck. Nat. Ges., XL, 1879, p. 420, pl. x11, figs. 3, 4. —* PFEIFFER, Nov. Conch., V, 1879, p. 192, pl. cLvu1, figs. 4,6.—* Pa&TEL, C.Sam., III, 1890, p. 162.—* von IHERING, Abh. Senck. N. Ges., XVIII, 1893, p. 156. Japan. Section CYLINDRICA Simpson, 1900. (Type, Nodularia cylindrica Simpson. ) Shell inflated, *solid, cylindrical, smooth, with a rounded posterior ridge; teeth heavy, pseudocardinals radiate, curved. NODULARIA CYLINDRICA Simpson. * Unio grayanus SCHRENCK,? Reis. und Forsch. im Am. Lande, 1867, p. 694, pl. XX VII, figs. 1-3. Nodularia cylindrica SIMpsoNn, Pr. Ac. N. Sci. Phila., 1900, p. 84. Amur land. Section NODULARIA Conrad, 1853. (Type, Unio douglasie Gray.) Characters the same as the genus. (Group of Nodularia douglasie. ) Shell olive to blackish, subsolid; surface generally more or less cov- ered with nodules arranged in subradiating or chevron-shaped patterns. 1T have seen a curious shell in the collection of Mr. Bryant Walker shaped some- thing like the N. grayana, but quite heavy and decidedly inflated in the post-basal region. It may be an old grayana, but is so eroded that I can not be certain. ‘Schrenck supposes this to be the Unio grayanus of Lea, but it is very different. It is a large, heavy, cylindrical shell, apparently without sculpture, and the figure does not show plainly whether it has any posterior ridge. A large form between grayanus and oxyrhynchus is found in Korea, according to von Martens, Sitzber. Nat. Fr., 1885, p. 77. 808 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XSI. tNODULARIA DOUGLASIZ Gray.'! s ae douglasie Gray, Griff. An. King., XII, 1833, (p. 601 index, 1834), pl. xx1, fig. —* P2#TEL, Conch. Sam., IIT, 1890, p. 151. pe murchisonianus LEA, Tr. Am. Phil. Soc., V, 1834, p. 33, pl. 111, fig. 6; *Obs., I, 1834,p. 145, pl. 111, fig. 6. —* Hantry, Test. Moll. ,1842,p. 177; * Biv. Shells,1843, p. 177, pl. xx, fig. 53.—* CaTtow and pov, Conch. None 1845, p. 61.— *KusTER, Conch. Cab. Unio, 1856, p. 166, pl. xLviut, figs. 3, 4.—*H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 497.—* CHENU, Man., 1859, II, p. 142, fig. 701.—* SowrerBy, Conch. Icon., XVI, 1866, pl. xxxviil, fig. 207.—* P&TEL, Conch. Sam., III, 1890, p. 160.—“ von IHERING, Abh. Senck. Nat. Ges., X VIII, 1893, p. 159. * Margarita (Unio) murchisonianus LEA, Syn., 1836, p. 14; 1838, p. 14. * Margaron ( Unio) murchisonianus LEA, Syn., 1852, p. 21; 1870, p. 32. * Unio osbecki PHILIPPI, Zeits. fiir Mal., 1845, p. 164; *Conch., III, 1847, p. 45, pl. i, fig. 1.—*H. and A. Apams, Gen. Rec. Moll., IJ, 1857, p. 497.—* Kusrrr, Conch. Cab. Unio, 1861, p. 236, pl. LXxIx, fig. 3.—* SowERBY, Conch. Icon., XVI, 1868, pl. LxIx, fig. 353.—* P&TEL, Conch. Sam., III, 1890, p. 162. * Margaron ( Unio) osbecki Lra, Syn , 1852, p. 21; 1870, p. 39, *t Unio nux-persicus DUNKER, Zeits. fiir Mal., 1818, p. 88.°—* MUSGRAVE, Phot. Conch., 1865, pl.1, fig. 10.—*SoOWERByY, Conch. Icon., XVI, 1868, pl. Lxx111, fig. 373; ~ Parr, Conch, Sam., III, 1890, p. 161. * Margaron (Unio) nux-persicus LEA, Syn., 1870, p. 32. *t Unio wrightii Lea, Pr. Ac. N. Sei., Phila., IX, 1865, p.75; * Jl. Ac. N. Sci. Phila., VI, 1868, p. 283, pl. xxxIXx, fig. 97; *Obs., XII, 1869, p. 43, pl. xxxrx, fig. 97. | OYTO (Unio) wrightit LEA, Syn., 1870, p. 32. “Unio sculptus DEsHAYES, Bull. Nouv. Arch. Mus., LX, 1873, p. 9, pl. 1, figs. 3, 3a.— * HEUDE, Conch. F. Nank., III, 1877, pl. xxrv, fig.51.—* P&TSL, Conch. Sam., IIT, 1890, p. 167. *Unio dactylinus HEUDE, Conch. F. Nank., 1885, pl. Lxv.3 =2Unio pictorum var. longirostris WESTERLUND, Kong so. vet. Ak. Hand, XIV, No. 12, p. 74.4 Unio schrenckt WESTERLUND. Where described? Unio abbreviatus WESTERLUND. Where described ?* + NODULARIA DOUGLASI4 var. SHANGHAIENSIS Lea. “+ Unio shanghaiensis Lua, Pr. Ac. N. Sci. Phila., III, 1859, p.153;5 *J1. Ac. N. Sci. Phila., IV, 1860, p. 242, pl. xxxvi, fig. 121; * Obs., VII, 1860, p. 60, pl. xxxvI, fig. 121.—* REEVE, Conch. Icon., XVI, 1865, pl. x x1, fig. 96.—* P4& TEL, Conch. Sam., III, 1890, p. 167. 0) Mioinictor um var. amurensis MOUSSON, J].de Conch. by ANY, 1887, p.26, pl.1, fig. 8. 'The plate in Griffith's Cie ier on Aen hig. species is figured bears date of 1833, and the names of the species are designated on it. The brief description (in the index) was published in 1834, the date of the work. Lea’s Unio murchisonianus was not published until 1854. This species has an immense distribution and varies greatly in form and degree of sculpture. 2An author’s shell in the Lea collection is certainly a young U. douglasic. ’'This and U. firmus and chloreus with others are given as varietal names and lettered, 4Credited by Westerlund to Amurland. Unio pictorum, or varieties of it, have several times been credited to this region, but no doubt erroneously. This species is always darker when adult than the well-known European species, and has totally different beak sculpture. The two shells often resemble each other closely in form. 5Specimens of shells bearing the above names, labeled by Westerlund, are in the U. 8. National Museum. 5A smooth form of douglasiw, possibly worthy of a varietal name. NO. 1205. SYNOPSIS OF THE NAITADES—SIMPSON. 809 }NODULARIA DOUGLASIZ var. NIPPONENSIS von Martens. ! * Unio nipponensis VON MARTENS, S. B. Nat. Fr., 1877, p. 119.—* Koper, Abh. Senck. Nat. Ges., XI, 1879, p. 422, pl. xu, fig. 3.—* PaTe., Conch. Sam., III, 1820, p. 161.—* von IneRING, Abh. Senck. Nat. Ges., XVIII, 1893, p. 160. China; Amurland; Japan. + NODULARIA DORRI Wattebled. * Unio dorrt WATTEBLED J]. de Conch., XXXIV, 1886, p. 71, pl. v, fig. 5,—* PETEL, Conch. Sam., ITI, 1890, p. 151. Cochin China; Anam; Mekong river. NODULARIA DIGITIFORMIS Sowerby. * Unio digitiformis SOwERBY, Conch. Icon., XVI, 1868, pl. Lxy, fig. 333.—* Pare, Conch. Sam., ITT, 1890, p. 150. ? India. (Group of Nodularia japanensis.) Shell solid, elliptical, subrhomboid or oval, biangulate, rounded or pointed behind and often produced at the posterior base; posterior ridge low or scarcely developed; beaks moderately full; sculpture zig- zag radial; surface of the valves concentrically striate or more or less covered with corrugated chevron-shaped sculpture which often becomes somewhat nodulous; epidermis greenish and sometimes rayed in young shells, becoming brown or blackish when adult. Animal having the inner gills wider than the outer in front, equal behin<, free from the abdominal sac throughout, united to the mantle to the extreme posterior point; palpi rather large, long; mantle double on the border and toothed below; branchial opening large, with well- developed, brown papille; anal opening large, with small tubercular papillz on its inner edge, covered with wart-like papille inside; super- anal opening not closed below.° tNODULARIA JAPANENSIS Lea. “Unio japanensis Lra, Pr. Ac. N. Sci. Phila., III, 1859, p. 153; *Jl. Ac. N. Sci., Phila., IV, 1860, p. 244, pl. xxxvI, fig. 123; *Obs., VII, 1860, p. 62, pl. xxxvI, fig. 123.—-* VON MARTENS, Mal. BI., VII, 1861, p.55.—* Kuster, Conch. Cab. Unio, 1862, p. 227, pl. xcru, fig. 4.—* SowERBy, Conch. Icon., XVI,1868,pl. LXxx, fig. 420,—* PaTEL, Conch. Sam., III, 1890, p. 155.—* von InErRING, Abh. Senck. Nat. Ges., X VIII, 1893, p. 157. mainland, though I have seen nothing that exactly agrees with Kobelt’s figure. The ordinary form of douglasie is found also in Japan. *This seems to stand between this group and that of N. grayanus. *The shells of some of the species of this group are very different from the normal Nodularia, being covered with roughish epidermis and apparently lacking sculpture. Others, however, show occasional sculpture, and the young shells have the green epidermis characteristic of the group. 810 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. NODULARIA JAPANENSIS var. JOKOHAMENSIS von Ihering. “Unio japanensis KoBELY Abh. Senck. Nat. Ges., XI, 1879, p. 423, pl. x11, figs. 1, 2.1 * Unio yokohamensis VON IHERING, Abh. Senck. Nat. Ges., XVIII, 1893, p. 158. Japan. tNODULARIA HACONENSIS von Ihering. * Unio haconensis VON IMERING, Abh. Senck. Nat. Ges., X VIII, 1893, p. 161, fig. 3. Japan. NODULARIA BRANDTII Kobelt. * Unio brandtii KoBELT, Abh. Senck. Nat. Ges., XI, 1879, p. 426, pl. xxi, fig. 15.— *PxereL, Conch. Sam., III, 1890, p. 146.—* voNIHERING, Abh. Senck. Nat.Ges., MOVIL, 1893, p. 157. 2 Japan. NODULARIA BIW Kobelt. * Unio biw@ KoBELT, Abh. Senck. Nat. Ges., XI, 1879, p. 425, pl. xxi, figs. 2-4.— *PaETEL, Conch. Sam., III, 1890, p. 146.—* von IHERING, Abh. Senck. Nat. Ges., XVII, 1898, p. 157. Japan. NODULARIA OMIENSIS von Heimburg. * Unio omiensis VON HEIMBURG, Nach. Deuts. Mal. Ges., XVI, 1884, p. 93; *Jahr- buch Mal. Ges., XIV, 1887, p. 2, pl. 1, figs. 2, 3.—* PaT=1, Conch. Sam., III, 1890, p. 761. Province of Omi, Japan. (Group of Nodularia reiniana.) Shell elliptical oval, very solid, truncated in front and somewhat biangulate behind, slightly produced at the posterior base; beak sculp- ture not known; pseudocardinals heavy, elongated, parallel with the dorsal line. Animal unknown.’ NODULARIA REINIANA Kobelt. * Unio reinianus Koprit, Abh. Senck. Nat. Ges., XI, 1879, p. 424, pl. xxm1, fig. 1.—* von InERING, Abh. Senck. Nat. Ges., XVIII, 1893, p. 157. Japan. (Group of Nodularia sagittaria.) Shell elongated, the hinder point above the middle of the shell, with a sharp posterior ridge and a faint ridge above it; beaks rather low, 'Kobelt figured this for Lea’sspecies, and it seems to me to bean old, solid, slightly arcuate form, possibly worthy of a varietal name. 2It is quite probable that this and the preceding species are only varieties of N. japanensis. 3’The beaks of the specimen figured are greatly eroded. I can not be certain as to the relationship of this curious form, but it probably is a Nodularia. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 811 their sculpture irregularly radial; disks finely concentrically striate, not otherwise sculptured ; epidermis yellowish olive, cloth-like; pseudo- cardinals greatly elongated, compressed, sometiines dentellate under the beaks; laterals long, compressed. Animal unknown. + NODULARIA SAGITTARIA Lea. *Unio sagittarius LEA, Pr. Ac. N. Sci. Phila., VII, 1856, p. 93; *J1. Ac. N. Sci. Phila., III, 1857, p. 298, pl. xxvI, fig. 12; * Obs., VI, 1857, p. 18, pl. xxv1, fig. 12. * Margaron (Unio) sagittarius LEA, Syn., 1870, p. 58. *t Unio dugasti MORLET, Jl. de Conch., XL, 1892, p. 86; * XLI, 1893, p. 156, pl. v1, fig. 4.1 Siam; Cambodia. (Group of Nodularia ceruieda.) Shell elliptical, inflated, pointed about midway up behind, the post- basal region produced, with a well developed posterior ridge; beaks sculptured with numerous fine, radiating riblets, the central ones of which join below, the whole often more or less zigzagged and extend- ing well over the disk; epidermis generally bluish green. Animal unknown. +t NODULARIA CAERULEA Lea. *Unio ceruleus Lea, Tr. Am. Phil. Soc., IV, 1831, p. 95, pl. x11, fig. 25; *Obs, I, 1834, p. 105, pl. x1, fig. 25.—*HANLEY, Test. Moll., 1842, p. 194; *Biv. Shells, 1843, p. 194, pl. xx, fig. 49.—*CaTLow and REEVE, Conch. Nom., 1845, p. 56.—*H. and A. Apams, Gen. Rec. Moll., II. 1857, p. 493.—*CHENU, III. Conch., 1858, pl. x v1, figs. 3, 3a, 3b.—-* KUSTER, Conch. Cab. Unio, 1861, p. 228, pl. Lxxvu, fig. 4.—*SowERBy, Conch. Icon., XVI, 1866, pl. xu11, fig. 230.— *HANLEY and THEOBALD, Conch. Ind., 1876, p. 6, pl. x11, figs. 3, 3a.—*PaTEL, Conch. Sam., III, 1890, p. 148. *Margarita (Unio) ceruleus LEA, Syn., 1836, p. 26; 1838, p. 20. *Margaron (Unio) ceruleus LEA, Syn., 1852, p. 30; 1870, p. 47. * Unio gerbidoni EYDOUX, Guer. Mag., 1838, p. 9, pl. CX VIII, figs. 2, 2a, 2b.—* HANLEY and THEOBALD, Conch. Ind., 1876, p.6, pi. xu, fig. 2.—* P& Tex, Conch. Sam., III, 1890, p. 153. *tUnio substriatus Lua, Pr. Ac. N. Sci. Phila., VIII, 1856, p.93; *Obs., VI, 1857, p. 20, pl. xxvI, fig. 14; *J1. Ac. N. Sci. Phila., IIL, 1858, pl. x xvi, fig. 14. * Margaron (Unio) substriatus Lea, Syn., 1870, p. 47. *+ Unio humilis Lea, Pr. Ac. N. Sci. Phila., VIII, 1856, p.93; *Obs., VI, 1857, p. 16, pl. xxvi, fig. 10; *Jl. Ac. N. Sci. Phila., III, 1858, p. 296, pl. xxvu, fig. 10.— *P#TEL, Conch. Sam., III, 1890, p. 155. *Margaron (Unio) humilis LEA, Syn., 1870, p. 32. *Unio corrianus KUSTER, Conch. Cab. Unio, 1861, p. 229, pl. LX VII, fig. 5. *t Unio leioma BENSON, Ann. and Mag., 1862, p. 192.—* HANLEY and THEOBALD, Conch. Ind., 1876, p. 6, pl. x11, fig. 6.—* P&TEL, Conch. Sam., III, 1890, p. 157. *t Unio pilatus Lia, Pr. Ac. N. Sci. Phila., X, 1866, p. 133; *J1. Ac. N. Sci. Phila., VI, 1868, p. 281, pl. xxxvill, fig. 95; * Obs., XII, 1869, p. 41, pl. xxxviIl, fig. 95. *+ Margaron (Unio) pilatus LEA, Syn., 1870, p. 47. *t Unio evitatus LEA, Pr. Ac. N. Sci. Phila., X, 1868, p. 133; *J1. Ac. N. Sci. Phila., VI, 1868, p. 279, pl. xxxvull, fig. 92; * Obs., XII, 1869, p. 39, pl. xxx vill, fig. 92. 1 This group seems to stand in part between section Lanceolaria and Nodularia. 812 . PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. * Margaron ( Unio) evitatus La, Syn., 1870, p. 47. * Unio trirostris SOWERBY, Conch. Icon., XVI, 1868, pl. Lxv, fig. 331. ? Unio andersonianus NEVILL, Jl. As. Soc. Beng., XLVI, 1877, p. 40; Researches Yun. Exp. 1877, p. 900, pl. Lxxx, figs. 8, 12.! India; southeast Asia. : +NODULARIA TERETIUSCULA Philippi. * Margarita (Unio) cailliaudi Lua, Syn., 1838, p. 24. * Margaron (Unio) cailliaudi LEA, Syn., 1852, p. 36; 1870, p. 58.2 Wee: *Unio teretiusculus PHiLippI, Conch., III, 1847, p. 45, pl. m1, fig. 3.3—*? KusTER, Conch. Cab., 1856, p. 183, pl. xx xv, fig.5.—* SowERBy,Conch. Icon., XVI, 1868, pl. LXxV, fig. 389.—* JIcKELI, Faun. N. O. Af., 1874, p. 276, pl. x1, figs. 1-3.— *PasTEL, Conch. Sam., III, 1890, p. 169.—* von MarTENS, Besch. Deuts. Ost-Af., 1897, p. 229. Unio lithophagus ZIEGLER, manuscript, probably. Upper Nile drainage. NODULARIA LEDOULXIANA Charmes. * Unio ledoulxianus CHARMES, Bull. Soc. Mal. Fr., II, 1885, p.173.—* BOURGUIGNAT, Moll. Af. Eq., 1889, p. 194.—* VON MarRTENS, Besch., 1897, p. 229.4 Central Africa. NODULARIA GAUDICHAUDI Eydoux. “Unio gaudichaudi KyDoux, Guer. Mag., 1838, p. 10, pl. cxviul, fig. 3.—*H. and A. ADAMS,Gen. Rec. Moll., II, 1857, p. 494.—*P.TEL,Conch. Sam., III, 1890, p. 153. *Margaron (Unio) gaudichaudi La, Syn., 1850, p.32; 1870, p.50. Small streams of Bengal. NODULARIA KERAUDRENI Eydoux. “Unio keraudreni KyDOUX, Guer. Mag., 1838, p.8, pl. cxvul, figs. 1, la.—*H. and A. ADAMS, Gen. Rec. Moll., IT, 1857, p. 494.—* Parr, Conch. Sam., III, 1890, p. 156. *Margaron (Unio) keraudrent LEA, Syn., 1852, p. 30; 1870, p. 46. Itivers and swamps of Bengal. 1T have not seen the figure of andersonianus, but Nevill states that it is near ceruleus. The Nodularia cerulea isan abundant and very widely distributed form, and therefore quite variable in size, form, solidity, color, and sculpture, and it is possible that other so-called species should be merged with it. Some of the above might rank as varieties, but I can hardly separate them. ? Lea credits this name to Ferussac manuscript. So faras I know neither Ferussac or anyone else has ever described it. Lea makes U. teretiusculus a synonym of it in his Synopsis. -3Philippi’s figure is a little more rounded posteriorly than are any of the shells I have seen from Africa bearing this name. After a critical comparison of numerous specimens, which are undoubtedly of African origin, I can only place this in the coeruleus group (with which it agrees in every essential character) and close to cwruleus itself. There are other undoubtedly close relations between species of Naiades of the Ethiopian and Oriental regions. 4Unfigured. Von Martens places it inthe group of U. teretiusculus. No. 1205. SYNOPSIS OF THE NAILADES—SIMPSON. 813 + NODULARIA SHURTLEFFIANA Lea. *Unio shurtlefianus Ln, Pr. Ac. N. Sei. Phila., VIII, 1856, p.94; * Obs., VI, 1857, p. 22, pl. XXVU, fig. 17; * Jl. Ac. N. Sci. Phila., ITI, 1858, p. 302, pl. xx vu, fig. 17.— *PETEL, Conch. Sam., III, 1890, p. 167. * Margaron ( Unio) shurtlefianus Lea, Syn., 1870, p. 32. India; Siam. +NODULARIA OCCATA Lea. * Unio occatus, LEA, Pr. Ac. N. Sci. Phila., 1V, 1860, p.307; *J1. Ac. N. Sci. Phila., VI, 1863, p. 398, pl. L, fig. 304; * Obs., X, 1863, p. 34, pl. L, fig. 304.—*SowERBy, Conch. Icon., XVI, 1868, pl. Lx xix, fig. 412.—* Pa TEL, Conch. Sam., III, 1890, p. 161. : * Margaron ( Unio) occatus, LEA, Syu., 1870, p. 31. * t Unio macilentus, BENSON, Ann. and Mag., X, 1862, p. 187.—* HANLEY and THEO- BALD, Conch. Ind., 1876, p. 5, pl. X, figs. 2,4; p. 62, pl. CLIV, fig.5.—* PaTeEL, Conch. Sam., III, 1890, p. 158. * Unio rugosus, HANLEY and THEOBALD, Conch. Ind., 1876, p. 62, pl. CLI, fig. 3. India. NODULARIA MOSSAMBICENSIS von Martens. ~ Unio mossambicensis VON MARTENS (Peter's manuscript), Mal. Bl., VI, 1860, p. 218, pl. 111, figs. 3-5.—* P&TEL, Conch. Sam., III, 1890, p. 160.—* von Marrens, Besch. Deuts. Ost-Af., 1897, p. 225, pl. v1, fig. 2. * Unio sennariensis var. VON MARTENS, Mal. B1., X XI, 1873, p. 43. * Unio parreysi (v. d. Busch.) var. schwinefurthti VON MARTENS, Noy. Conch., LV, 1876, p. 140, pl. cXxxIJ, figs. 3-5, | Sennaar. northeast Africa; Mosambique, Zambezi River. tNODULARIA INORNATA Lea. “Unio inornatus La, Pr. Ac. N. Sci. Phila., VITI, 1856, p.93; *Obs., VI, 1857, p. 13, pl. xx1v, fig.6; *Jl. Ac. N. Sci. Phila., IIT, 1858, p. 293, pl. xxrv, fig. 6.—* Von MARTENS, Pr. Zool. Soc. Lond., 1860, p. 15.—* MORELET, Ser. Conch., LY, 1875, p. 352.—P#TEL, Conch. Sam., III, 1890, p. 155. * Margaron ( Unio) inornatus Lra, Syn., 1870, p. 47. Siam; Cambodia. tNODULARIA PACHYSOMA Benson. * Unio pachysoma BENSON, Ann. and Mag., X, 1862, p.186.—* HANLEY and THEOBALD, Conch. Ind., 1876, p. 6, pl. x11, fig. 1. “Margaron ( Unio) pachysoma Lna, Syn., 1870, p. 63. “Unio pachystoma PmTEL, Conch. Sam., III, 1890, p. 152. Assam. t NODULARIA BONNEAUDI Eydoux. * Unio bonneaudi EYDoux, Guer. Mag., 1838, p. 10, pl. cx1x, figs. 1, lu.n—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 493.—* SowERBy, Conch. Icon., XVI, 1868, 'This species seems to be close to N. occata, but is thinner and of delicate texture. Iam not certain of its exact affinities. I am sure that it is not a variety of N. mossanbicensis. 814 PROCEEDINGS OF THE NATIONAL MUSEUM, VOL, XXII. pl. xcv, fig. 515.—* HANLEY and THEOBALD, Conch. Ind., 1876, p.5, pl. x, fig. 6.—ANDERSON, Yunnun Exp., 1878, p. 900, pl. LXxx, figs. 8-12.—* P&TEL, Conch. Sam., III, 1890, p. 146. * Margaron (Unio) bonneaudi Lea, Syn., 1852, p. 32; 1870, p. 50. India. +NODULARIA TUMIDULA Lea. “Unio tumidulus LEA, Pr. Ac.N. Sci. Phila., VIII, 1856, p.93; *Obs., VI, 1857, p. 15, p). xxv, fig.9; *Jl. Ac. N. Sci. Phila., III, 1858, p. 295, pl. xxv, fig. 9.—*von MaRrTENS, Pr. Zool. Soc. Lond., 1860, p. 15.—* SowERBy, Conch. Icon., XVI, 1868, pl. LXX XIX, fig. 482.—* MORELET, Ser. Conch., IV, 1875, p. 351.—* PmTEL, Conch. Sam., III, 1890, p. 170. * Margaron (Unio) tumidulus Lea, Syn., 1870, p. 39. Siam, Cambodia. +NODULARIA ASPERULA Lea. * Unio inornatus REEVE, Conch. Icon., XVI, 1865, pl. xx1x, fig. 147.! * Unio asperulus LEA, Pr. Ac. N. Sei. Phila., X, 1866, p. 133; *J1. Ac. N. Sci. Phila., VI, 1868, p. 280, pl. xxxvu, fig. 94; *Obs., XII, 1869, p. 40, pl. xxxvii, fig. 94. * Margaron (Unio) asperulus LEA, Syn., 1870, p. 31. * Margaron (Unio) versus La, Syn., 1870, p. 46. Siam; Cambodia. NODULARIA ANCEPS Deshayes. * Unio anceps DESHAYES, Nouv. Arch.de Mus., X, 1874, p. 127, pl. v1, figs. 8-12.— *PmTEL, Conch. Sam., III, 1890, p. 144. Cambodia. +NODULARIA PUGIO Benson. * Unio pugio BENSON, Ann. and Mag., X, 1862, p. 193.—* SowERBy, Conch. Icon., XVI, 1868, pl. xcv, fig. 516.—* Pa TEL, Conch. Sam., III, 1890, p. 164.? Burma. NODULARIA MICHELOTI L. Morlet. “Unio micheloti LL. MORLET, J]. de Conch., 1886, pp. 77, 291, pl. x11, figs. 6, 6a.—— *PmTEL, Conch. Sam., III, 1890, p. 159. Tonkin. NODULARIA FLUCTIGER Lea. * Unio fluctiger LEA, Pr. Ac. N. Sci. Phila., III, 1859, p. 152; *J1. Ac. N. Sci. Phila., IV, 1860, p. 250, pl. XxX X1X, fig. 130; *Obs., VII, 1860, p. 68, pl. XXxIXx, fig. 130.— *KustmEr, Conch. Cab. Unio, 1861, p. 237, pl. Lxxx, fig. 1.—*SOWERBy, Conch. Icon., X VI, 1866, pl. x11, fig. 299. * Margaron (Unio) fluctiger Lua, Syn., 1870, p. 32. Southeast Asia, no doubt. 1T believe that Reeve’s U. inornatus = Lea’s U. asperulus. As Lea had used the name inornatus previous to Reeve for a Unio, he changed the name of the latter to U. versus. 2A shell labeled Unio bowvieri Nevill in the collection of Frederick Stearns in Detroit is, I believe, the same as U. pugio Benson. I do not know if Nevill ever described U. bouvieri or whether it is only a manuscript name. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 815 tNODULARIA SCOBINATA Lea. “Unio scobinata Lea, Pr. Ac. N. Sei. Phila., VIII, 1856, p. 93; * Obs., VI, 1857, p. 19, pl. xxv1, fig. 138; *JI. Ac. N. Sci. Phila., III, 1858, p. 299, pl. XXVI, fig. 13.—* VON MARTENS, Pr. Zool. Soc. Lond., 1860, p. 15.—*Sowrrsy, Conch. Icon., XVI, 1868, pl. LX1H, fig. 313.—* MorrLetT, Ser. Conch., IV, 1875, p. 354, pl. xvui, figs. 2-6.—* P&TEL, Conch. Sam., ITI, 1890, p. 167. * Margaron ( Unio) scobinatus LEA, Syn., 1870, p. 32. *Unio mandarinus MORELET, JI. de Conch., XII, 1863, p. 159.—* Pare, Conch. Sam., III, 1890, p. 158. ¢ *Unio pellis-lacerti MORELET, Jl. de Conch, XIII, 1865, p. 22.—* SOWERBY, Conch. Tcon., XVI, 1868, pl. LXXXVI, fig. 457.—* MORELET, Ser. Conch., IV, 1875, p. 355, pl. xvul, fig. 5.—* P&TEL, Conch. Sam., III, 1890, p. 162. * Unio venustus MORELET, Jl. de Conch., XIV, 1866, p. 63.—-* Paste, Conch. Sam., III, 1890, p. 171. *Unio oblatus LEA, Syn., 1870, p. 64.! Siam; Cochin-China; Cambodia. NODULARIA GRATIOSA Philippi.2 * Unio gratiosus PHILIPPI, Conch., I, 1845, p. 20, pl. 1, fig. 5.—* CaTLow and REEVE, Conch. Nom., 1845, p.59.—*? Kuster, Conch. Cab, Unio, 1861, p. 239, pl. Lxxx, fig. 3. * Margaron (Unio) gratiosus La, Syn., 1870, p. 32. India probably; Philippi’s locality, New Holland, is certainly an error. + NODULARIA CRISPATA Gould. * Unio crispata GOULD, Pr. Bost. Soc. Nat. Hist., 1, 1843, p. 141; *Otia Conch., 1862, p. Lgl * Unio crispatus CATLOW and REEVE, Conch. Nom., 1845, p. 58.—* HANLEY and THEOBALD, Conch. Ind., 1876, p. 21, pl. xLv, fig. 1.—* PTEL, Conch. Sam., III, 1890, p. 149. *Margaron (Unio) crispatus LEA, Syn., 1870, p. 32. British Burma. +tNODULARIA NUCLEUS Lea. “Unio nucleus Lea, Pr. Ac. N. Sci. Phila., VIII, 1856, p.94; *Obs., VI, 1857, p- 26, pl. xxvinl, fig. 21; *Jl. Ac. N. Sci. Phila., ILI, 1858, p. 303, pl. xxvitl, fig. 21. * Margaron (Unio) nucleus LEA, Syn., 1870, p. 30. Siam. +NODULARIA PHASELUS Lea. “Unio phaselus Lea, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 94; *Obs., VI, 1857, Daeipe ply x xevi ioe Ace Nee oc ebhilay Mile 1858; p. 297. nplexoxva, fig. 11. * Margaron (Unio) phaselus LEA, Syn., 1870, p. 32. Siam. ‘New name for Unio renustus Morelet, preoccupied by Lea. > Philippi’s figure is not very distinct, and I can not be sure of what it is, only that it seems to be a member of this group that I can hardly connect with anything else. He credits it to Parreyss. 816 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL. XXII. NODULARIA SCOBINA Hanley. *Unio scobina HANLEY, Biv. Shells, 1856, p. 382, pl. x xt, fig. 40..—* HANLEY and I p) I ? } to) THEOBALD, Conch. Ind., 1876, p. 22, pl. XLVI, figs. 2, 3.—* P#TEL, Conch. Sam., III, 1890, p. 167. Assam. (Group of Nodularia pazii.) Shell thin, with the hinder point long drawn out; posterior ridge double, low, and sharp, the dorsal line above it straight or incurved; beak sculpture not seen; surface of the shell smooth, dull olive colored; teeth exceedingly compressed; pseudocardinals long, lamellar. +NODULARIA PAZII. *Unio pazit LEA, Pr. Ac. N. Sci. Phila., VI, 1862, p. 176; *J1. Ac. N. Sci. Phila., VI, 1866, p. 61, pl. xx1, fig. 60; *Obs., XI, 1867, p. 65, pl. xxi) figs 60— * SOWERBY, Conch. Icon., X VI, 1868, pl. xcu, fig. 502. * Margaron (Unio) pazit Lea, Syn., 1870, p. 39. China; Siam; Cambodia. NODULARIA JOURDYI L. Morlet. * Unio jourdyi MoRLET, J1. de Conch., 1886, p. 289, pl. x11, figs. 5, 5a. Tonkin. + NODULARIA INGALLSIANA Lea. * Unio ingallsianus Lea, Tr. Am. Phil Soc., X, 1852, p. 282, pl. xxiv, fig.41; ~Obs., V, 1852, p. 38, pl. xXrv, fig. 41.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p.491.—* REEve, Conch. Icon., XVI, 1865, pl. xxvi, fig. 126.—* MoRELET, Ser. Conch., IV, 1875, p. 351.—* PTE, Conch. Sam., III, 1890, p. 155. *Margaron (Unio) ingallsianus LEA, Syn., 1852, p.36; 1870, p. 58. Cochin-China; Sim; Cambodia. (Group of Nodularia trompi.) Shell small, subtrapezoidal, wider behind, slightly inflated, with a rounded posterior ridge; beaks full, sculpture not seen; surface covered with very fine, nodulous, somewhat zigzag corrugations, with upeurved posterior ridges on the posterior slope; epidermis reddish brown or black; hinge teeth compressed; pseudocardinals vertically striate. t NODULARIA TROMPI Drouet and Chaper. * Unio trompit DROUET and CHAPER, Mem. Soc. Zool. Fr., V, 1892, p. 153, pl. v1, figs. 8-10; Jl. de Conch., XLI, 1893, p. 45. Borneo. (Group of Nodularia olivaria.) Shell thin, inflated, blue green or olive green, smooth, shining, with two or more faint ridges on the posterior slope; beaks and disk almost or quite destitute of sculpture; teeth greatly compressed, lamellar. 1 Credited to Benson manuscript. NO. 1205. . SYNOPSIS OF THE NAIADES—SIMPSON, 817 +t NODULARIA OLIVARIA Lea. * Unio olivarius Lea, Tr. Am. Phil. Soe., IV, 1831, p. 108, pl. xvi, fig. 38; *Obs., I, 1834, p. 118, pl. xvi, fig. 38.—* HANLEy, Test. Moll., 1842, p. 195; * Biv. Shells, 1843, p. 195, pl. xx11, fig. 32.—* H. and A. ADAms, Gen. Ree. Moll., IT, 1857, p. 494.—* CHENU, Jl. Conch., 1858, pl. vin, figs. 11, 11a, 11b.—* KustTEr, Conch. Cab. Unio, 1861, p. 244, pl. Lxxxu1, fig. 2.—* SowERBy, Conch. Icon., XVI, 1866, pl. XxxvI, fig. 195.—* HANLEY and THEOBALD, Conch. Ind., 1876, é Dp. );.pl.x, fig. 1.—PaTEL, Conch. Sam., iI, 1890, p. 161. * Margarita ( Unio) olivarius LEA, Syn., 1836, p. 26; 1838, p. 20; 1852, p. 30; 1870, p. 47. * Unio pumilio KUSTER, Conch. Cab. Unio, 1862, p. 268, pl. xc, fig. 7. India. +NODULARIA NUTTALLIANA Lea. *Unio nuttallianus Lea, Pr. Ac. N. Sci. Phila., VII, 1856, p.103; * Obs., VI, 1857 p00; pl. Xxx, Mg. 25; Jl. Ac. N. Sev. Phila. TI, 1858) p. 310) pl. xxx, fis. 25.—* HANLEY and THEOBALD, Conch. Ind., 1876, p. 19, pl. xut, figs. 5, 6.— *P@ETEL, Conch. Sam., III, 1890, p, 161. * Margaron (Unio) nuttallianus Lea, Syn., 1870, p. 74. India. NODULARIA INVOLUTA Benson. *Unio involutus BENSON, Hanley Biv. Shells, 1856, p. 385, pl. xxii, fig. 19.— * HANLEY and THEOBALD, Conch. Ind., 1876, p:19, pl. xt, fig. 2.—* Pa Tr., Conch. Sam., III, 1890, p. 156. * Margaron (Unio) involutus Lea, Syn., 1870, p. 37. * Unio involuta SOWERBY, Conch. Icon., XVI, 1866, pl. xxx1v, fig. 177. Assam. Group of Nodularia contradens.) Shell inflated, obovate, rhomboid, with a slight swelling at the post base, and a well-developed posterior ridge; beaks full and high, the sculpture consisting of wavy, zigzag ridges which often extend over the shell as somewhat nodulous corrugations; pseudocardinals obliquely or vertically striate; laterals curved, cavity of the beaks rather shallow. +NODULARIA CONTRADENS Lea. *Unio contradens LEA, Tr. Am. Phil. Soc., VI, 1838, p. 75, pl. xviu, fig. 58; *Obs., II, 1838, p. 75, pl. Xvi, fig. 58.—* TroscHEL, Arch. fiir Nat., V, 1839, Pt. 2, p. 237.— *HANLEY, Test. Moll., 1842, p. 209; Biv. Shells; 1843, p. 209, pl. xxu1, fig. 8.— *CaTLOW and REEVE, Conch. Nom., 1845, p.57.—* H. and A. ADAMs, Gen. Rec. Moll , II, 1857, p. 492.—* CHENU, Il. Conch., 1858, pl. xxix, figs. 4, 4a, 4b.— * REEVE, Conch. [con., XVI, 1865, pl. Xx1x, fig. 149.—* PmTe., Conch. Sam., II, 1890, p. 148. * Margarita (Unio) contradens La, Syn., 1838, p. 25. * Margaron (Unio) contradens LEA, Syn., 1852, p.39; 1870, p. 46. *+ Unio javanus LEA, Pr. Am. Phil. Soc., I, 1840, p. 285; * Tr. Am. Phil. Soc, VIII, 1842, p. 220, pl. xvimi, fig. 37; *Obs., III, 1842, p. 58, pl. xvii, fig. 86.—*H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 494.—* CuEnu, Ill. Conch., 1858, pl. XXVUI, figs. 4, 4a, 4b.—* Kuster, Conch. Cab. Unio, 1856, p. 188, pl. xu, fig. 3; 1861, p. 236, pl. LX XIX, figs. 4,6.—* SowERBY, Conch. Icon., X VI, 1868, pl. xc, fig. 489.—* Pare, Conch. Sam., III, 1890, p. 155. Proce. N. M. vol. xxii 52 o 818 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. *Margaron (Unio) javanus LEA, Syn., 1852, p. 30. * Unio exilis DUNKER, Zeits. fiir Mal., III., 1846, p. 109.—Mousson, L. und S. W. Moll. Java, 1849, p. 92, pl. xv1, fig. 3 Bb *Margaron (Unio) exilis LEA, Syn., 1852, p. 29. *Unio mutatus Mousson, L. cama S. W. Moll. Java, 1849, p. $2, pl. xv1, figs. 1, 2; Zeits. fiir Mal., VII, 1851, p.46; *H. and A. ApDAms, Gen. Ree. Moll., IT, 1857, p. GL Dros, Conch. Sam., III, 1890, p. 160. *Margaron (Unio) mutatus LEA, Syn., 1852, p. 29. *Unio mederianus KustER,! Conch. Cab. Unio, 1861, p. 242, pl. Lxxx, fig. 7.— *PaTEL, Conch. Sam., III, 1890, p. 158. Java. +NODULARIA DIMOTA Lea. * Unio sumatreensis, LEA, Pr. Ac. N. Sci. Phila., III, 1859, p. 153; * Jl. Ac. N. Sci. Phila., IV, 1860, p. 239, pl. Xxx1v, fig. 118; Ober VII, 1860, p. 57. pl. XxxIv, fig, 118.—* P&TEL, Conch. Sam., III, 1890, p. 169. * Margaron (Unio) dimotus, Lea, Syn., 1870, p. 30.— * PmTE., Conch. Sam., III, 1890, p. 150.° Sumatra. NODULARIA FISCHERIANIA L. Morlet. *Unio fischerianus, L. MORLET, Jl. de Conch., XXXT, 1883, p. 109, pl. Iv, fig. 6.— * PmTeL, Conch. Sam., III, 1890, p. 152. Cambodia. + NODULARIA ANODONTFORMIS Tapperone-Canefri. * Unio (Microdontia) anodonteformis TAPPERONE-CANEFRI, Ann. Mus. Genov., XIX, 1883, p. 295, pl. x1, figs. 3-5. * Unio anodonteformis PaTEL, Conch. Sam., III, 1890, p. 144. New Guinea. + NODULARIA SACELLUS Drouet and Chaper. * Unio sacellus DROUET and CHAPER, Mem. Soc. Zool. Fr., V, 1892, p. 148, pl. v, figs. 4-6; Jl. de Conch., XLI, 1893, p. 43. : Borneo. | NODULARIA LUGENS Drouet and Chaper.* * Unio lugens DROUET and CHAPER, Mem. Soc. Zool. Fr., V, 1892, p. 147, pl. v, figs. 1-3.--* DrovET, Jl. de Conch., XLI, 1893, p. 44. Borneo. 1Kuster credits this to Mousson, Conch. of Java, p. 92. I know of no such work, and the name is not found in Mousson’s L. und Suss. W. Moll. von Java. 2Changed to this name by Lea because sumatreensis was preoccupied for a Unio by Dunker. 3This species varies much in sculpture, and shows the connection between the nearly smooth contradens and the strongly corrugated forms like rusticus and ~ dautzenbergi. It is really verysclose to contradens. 4I am doubtful whether these two are more than varieties of the same thing. The N. lugens is darker colored and seems to lack a little tubercle on the hinge, which is sometimes present in sacellus. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 819 +NODULARIA FULVASTER Drouet and Chaper. *Unio fulvaster DROUET and CHAPER, Mem. Soc. Zool. de Fr., V, 1892, p. 154, pl. VI, figs. 11-13.—*DRovET, Jl. de Conch., XLI, 1893, p. 45. Borneo. NODULARIA SEMIDECORATA L. Morlet. *Unio semidecoratus LL. MorytetT, Jl. de Conch., XXXVII, 1889, p. 192, pl. vin, fig. 4. River Srakeo, Siam. + NODULARIA RUSTICA Lea. *Unio rusticus Lea, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 93; *Obs., VI, 1857, p. 14, pl. xxv, fig. 7.—*Jl. Ac. N. Sci. Phila., III, 1858, p. 294, pl. xxv, fig. 7.—*Vvon MARTENS, Pr. Zool. Soc. Lond., 1860, p. 14.—* MORELET, Ser. Conch., IV, 1875, p. 353, pl. xv, fig. 7.—*PTEL, Conch. Sam., III, 1890, p. 166. * Margaron (Unio) rusticus LEA, Syn., 1870, p. 31. * Unio paivanus MORELET, Jl. de Conch., XIII, 1865, p .227. * Unio cambojensis SOWERBY, Conch. Icon., XVI, 1866, pl. XL, fig. 231.—*PaTEL, Conch. Sam., ITI, 1890, p. 147. Siam; Cambodia. tNODULARIA DAUTZENBERGI L. Morlet. “ Unio dautzenbergi MORLET, Jl. de Conch., XXXVII, 1889, p. 190, pl. vu, fig. 5. River Srakeo, Siam. NODULARIA SOBOLUS Fischer. * Unio siamensis MORLET, Jl. de Conch., XX XVII, 1889, p. 194, pl. vi, fig. 2. * Unio sobolus FISCHER, Bull. Soc. d’ Autun., 1891, p. 227.! Siam. NODULARIA VERBECKI Bottger. * Unio verbecki BOTTGER, Zool. Erg. Nied. Ost. Ind., IV, 1897, p. 89, pl. v, figs. 1, 2, 4, 5.—* PHTEL, Conch. Sam., III, 1890, p. 171. Sumatra. tNODULARIA ORIENTALIS Lea.? * Unio orientalis LEA, Pr. Am. Phil. Soc., I, 1840, p. 285; *Tr. Am. Phil. Soc., VIII, 1842, p. 221, pl. xvi, fig. 38; *Obs., III, 1842, p. 59, pl. xviu, fig. 38.— *H.and A, ADams, Gen. Rec. Moll., II, 1857, p.491.—* CuEeNnu, Ill. Conch, 1858, pl. xx xu, figs. 6, 6a, 6b.—* KusTER, Conch. Cab. Unio, 1861, p. 241, pl. LXXX, fig. 16.—* VON MARTENS, Mal. B1., XIV, 1866, p. 15.—* SowERBY, Conch. Icon., XVI, pl. xct, fig. 491.—* P& TEL, Conch. Sam., ITI, 1890, p. 162. 1Changed from siamensis to sobolus because the former was preoccupied by Lea. Probably an old, smooth rusticus. ‘I hardly know where to place this, as the only shell I have seen (the type) is evidently young, and has the beaks eroded until I can not make out the sculpture. It seems most likely to be an elongated, somewhat compressed member of the con- tradens group. 820 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. * Margaron (Unio) orientalis LEA, Syn., 1852, p. 38; 1870, p. 61. ~ Unio productus Movusson, L. und 8. W. Moll. Java, 1849, p. 93, pl. xvur, figs. 3-5; Zeits. ftir Mal., VII, 1851, p. 46. - * Unio p roductior L#aA, Syn., 1852, p.29.—* VON MARTENS, Mal. Bl., XIV, 1866, p. 16.—* II. and A. Apams, Gen. Ree. Moll., II, 1857, p. 494. Java. Section RALPIATULA, Simpson, (Type, Unio crispisulcatus Benson. ) Shell rather solid, triangular oval, with high beaks which are but little inflated, not very full at post base, bluntly pointed behind, the beaks and entire surface covered with radiating, occasionally slightly zigzag or divaricate ridges which are cut more or less into nodules or cancellations by concentric sulcations, the sculpture of the posterior slope stronger, and curving upward; pseudocardinals of the left valve 2 to 3, ragged, the anterior larger, two in the right valve, with a parallel sided socket, the larger teeth compressed but rather solid. ! + NODULARIA CRISPISULCATA Benson. * Unio crispisulcatus Lea, Ann. and Mag., X, 1862, p. 193.—* SowERBY, Conch. Icon., XVI, 1866, pl. XLIx, fig. 262.—* HaNLEY and THEOBALD, Conch. Ind., 1876, p. 6., pl. x1, fig. 5.—* PmTELn, Conch. Sam., ITI, 1890, p. 149. * Margaron (Unio) crispisulcatus Lea, Syn., 1870, p. 31. Burma. NODULARIA LIMA Simpson. * Unio radula BENSON,? in Hanley, Biv. Shells, Supp., 1856, p. 382.—* HANLEY and THEOBALD, Conch. Ind., 1876, p. 5, pl. X, fig. 3.—* PasrEL, Conch. Sam., III, 1890, p. 165. ~ Dysnomia radula ROCHEBRUNE, Bull. Soc. Phil., VI, 1882, p. 42. Assam; Cambodia. Section CHLATURA Conrad, 1853, (Type, Unio egyptiacus Cailliaud. ) Shell elliptical, pointed or rounded behind, usually slightly preduced at the post base; beak sculpture consisting of zigzag ridges which are generally quite pustulous, the sculpture often extending on to the usu- ally rayed disk; teeth compressed; pseudocardinals lamellar. Animal described under Nodularia. (See page 806.) (Group of Nodularia egyptiaca.) Characters the same as of the section. ‘Notwithstanding the considerable difference between this group and all other Nodularias there are species such as occatus, which seem to stand between it and the ceruleus group, and show the relationship of the two. 2 The name radula was used by Say for a Unio in 1822. I change Benson’s name as above. Iam not positive as to the relationship of this species. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 821 +NODULARIA AXGYPTIACA Cailliaud. * Unio species nuovo Savieny, Icon. Moli. Egypt, 1813, pl. vu, figs. 3-6. Unio egyptiaca CAILLIAUD, Voy. a Méroé, II, 1826, pl. LXx1, figs. 6. 7..—* DESHAYEs, An. sans Vert., 2d ed., 1835, p.553; ~ Enc. Méth., II, 1830, p. 587.—* Carlow and REEVE, Conch. Nom., 1845, p. 58. * Margarita ( Unio) egyptiacus LEA, Syn., 1838, p. 21. * Margaron (Umo) egyptiacus LEA, Syn., 1852, p.32; 1870, p. 50. * Unio egyptiacus HANLEY, Test. Moll., 1842, p. 198; * Biv. Shells, 1843, p. 198, pl. xx, fig. 56.—* KusTER, Conch. Cab., 1856, p. 157, pl. xLv, fig.2.—* H. and A. ADAMs, Gen. Rec. Moll., IJ, 1857, p. 494.—* REEVE, Conch. Icon., XVI, 1865, pl. xxvI, fig. 132.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 179.—* von MARTENS, Mal. Bl., XIII, 1866, p. 11.—*Moreert, Moll. Terr. et Fluv. 1868, p. 97.— *JICKELI (part) Faun. Moll. N. O. Af., 1874, p. 271, pl. x, figs. 1-8.— *KOBELT, Icon., new ed., 1886, p. 25, pl. XIV, figs. 262-265. “Unio eucyphus BOURGUIGNAT, Rev. et. Mag., IX, 1857, p. 19, pl. 111, figs. 1-3.— * P&TEL, Conch. Sam., III, 1890, p. 152. *Unio bourguignati LANDRAN, Seance Soc. Sei. Nat. Seine, 1864, p. 5, pl. —, figs. 1-3. ~ Pharaonia bourguignati ROCHEBRUNE, Bull. Soc. Mal. Fr., III, 1886, p. 113. Nile system; High Cazamance, West Africa (Vignon); both sides of the equator in Central Africa (Dohrn). 7, NODULARIA NILOTICA Cailliaud. Unio nilotica CAILLIAUD, Voy. ’ Méroé, II, 1826, pl. LUNI, figs. 8, 9.—* DESHAYES, An. sans Vert., 2d ed., VI, 1835, p.522; * Enc. Méth., II, 1830, p.585.—* CaTLow and REEVE, Conch. Nom., 1845, p. 61.—* Haniry, Test. Moll., 1842, p. 197; * Biv. Shells, 1843, p. 197, pl. xx1, fig. 39.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 494. —* von MariENs, Mal. Bl., XIII, 1866, p. 13.—* Pare, Conch. Sam., III, 1890, p. 161.—-* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 180. * Margarita (Unio) niloticus LEA, Syn., 1836, p. 29; 1838, p. 21. * Margaron (Unio) niloticus Lea, Syn., 1852, p.31; 1870, p. 50. Unio pumilus ZEIGLER, manuscript, and of authors. * Unio parreyssi Putuipri, Conch., III, 1848, p. 81, pl. v, fig. 6.—* JickEri, Faun. Moll. N. O. Af., 1874, p. 373. * Unio rugifer KUSTER, Conch. Cab. Unio, 1856, p. 157, pl. xiv, figs. 3, 4.—* von MARTENS, Mal. BI., XIII, 1866, p. 12.—* WrESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 180. * Unio sennaariensis KusTER, Conch. Cab. Unio, 1862, p. 280, pl. xciv, figs. 5, 6.—* PATEL, Conch. Sam., III, 1890, p. 167. * Unio eneus JICKELI, Faun. Moll. N. O. Af., 1874, p. 274, pl. 1x, fig. 2.—* P&E, Conch. Sam., III, 1890, p. 144. “Unio charbonnieri BOURGUIGNAT, Un. and Ir. Tan., 1886, p. 9.—*Icon. Mal. Tan., 1888, pl. xx, figs. 1,2.—* P&TEL, Conch. Sam., IIT, 1890, p. 147. “Unio coulboisi BOURGUIGNAT, Un. and Ir. Tan., 1886, p. 12; *Icon. Mal. Tan., 1888, pl. xx, figs. 3, 4.—* PasTeL, Conch. Sam., III, 1890, p. 149. *Unio dromauxi BOURGUIGNAT, Un. and Ir. Tan., 1886, p. 17; *Icon. Mal. Tan , 1888, pl. xxu1, figs. 1. 2.—* Pa&TEx, Conch. Sam., III, 1890, p. 151. 1 This species is often credited to Ferussac, but I donot know that he ever described it. It is considered by many to be the same as Nodularia nilotica, but the compar- ison of large series of material and authentie specimens in the Lea collection from Cailliaud incline me to separate them. There is, however, great variation in their characters, but wgyptiaca is a thinner, more rounded shell than niloticus, and has lamellar pseudo-cardinals. 822 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. NODULARIA NILOTICA var. GERRARDI von Martens. *Unio gerrardi VON MARTENS, Besch. Ost-Af., 1897, p. 223, pl. vu, fig. 5. Nile system; Lake Tanganyika; Senegal and High Cazamance (Vignon). NODULARIA BAGDADENSIS Bourguignat.! * Unio bagdadensis BoURGUIGNAT, Test. Noy. Saule., 1852, p. 30; *Cat. Rais., 1853, p. 78, pl. 1v, figs. 4-6. *Margaron (Unio) bagdadensis Lua, Syn., 1870, p. 46. Bagdad, on the Tigris River. NODULARIA RANDABELI Bourguignat.? * Unio randabelt BOURGUIGNAT, Un, and Ir. Tan., 1886, p.22; ~Icon. Mal. Tan., 1888, pl. xx1, figs. 3, 4.—* PaTEL, Conch. Sam., IIT, 1890, p. 165. Lake Tanganyika. +NODULARIA ESSOENSIS Chaper. *Unio essoensis CHAPER, Bull. Soc. Zool. Fr., X. 1885, p. 481, pl. x1, figs. 8, 9.— *P£TEL,Conch. Sam., III, 1890, p. 152. : Assini, west coast of Africa. NODULARIA DECAMPSIANA Wattebled.’ * Unio decampsianus WATTEBLED, Jl. de Conch., XXXII, 1884, p. 132, pl. vu, fig. 1.— *PmTEL, Conch. Sam., III, 1890, p. 150. *Unio campsianus P&TEL, Conch. Sam., III, 1890, p. 147. Western Soudan. NODULARIA BELLAMYI Jousseaume. *Pharaonia bellamyi JOUSSEAUME, Bull. Soc. Zool. Fr., XI, 1886, p. 486, pl. x11, figs. Ta, Td. Faraba, on the Niger; High Senegal. NODULARIA RENEA Jousseaume. “Reneus reneus JOUSSEAUME, Bull. Soc. Zool. Fr., XI, 1886, p. 482, pl. xu, figs. 4a, 4b. *Reneus faidherbi JOUSSEAUME, Bull. Soc. Zool. Fr., XI, 1886, p. 483, pl. x11, figs. 5, 5a. Niger at Kayon; Senegal River; High Senegal. 1 This appears from the figures and description to be a member of the Agyptiaca group of Nodularia. It is possible that it came from Asia Minor, but more likely that it is an African species. The Unio eucyphus.of Bourguignat, which he credits to this region, is believed by Lea to be the U. egyptiacus of Cailliaud, and I agree with him. Unio bagdadensis may be merely a peculiar form of the same thing. 2This may possibly be distinct from N. nilotica, or it may only be an oddly-formed specimen. 3I can not be positive as to the systematic position of this species, but it probably belongs here. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 823 *NODULARIA FOULADOUGOUENSIS Jousseaume. *Reneus fouladougouensis JOUSSEAUME, Bull. Soc. Zool. Fr., XI, 1886, p. 485, pl. Xl, figs. 6, 6a. Fouladougou, Niger; High Senegal. + NODULARIA GABONENSIS Kuster. * Unio gabonensis KUSTER, Conch. Cab. Unio, 1862, p. 291, pl. xcovu, fig. 7.— * P#TEL, Conch. Sam., III, 1890, p. 153. Margaron (Unio) gabonensis LEA, Syn., 1870, p. 47. Gaboon River, West Africa. +NODULARIA AQUITORIA Morelet. * Unio equitorius MORELET, J]. de Conch., XV, 1885, p. 31, pl. 11, fig. 9..\—* Pa: TEL, Conch. Sam., III, 1890, p. 144. * Unio landanensis SCHEPMAN, Notes Leyden Mus., VIII, 1891, p. 113, pl. v111, figs. 3d, 3b. Congo drainage. NODULARIA HOREI E. A. Smith. * Unio horei E. A. SMITH, Ann. and Mag., VI, 1880, p. 429; * Pr. Zool. Soc. Lond., 1881, p. 299, pl. xxxtv, fig. 37.—* CrossE, Jl. de Conch., XXXIX, 1881, p. 133.—* VON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 235. * Grandidieria horei BOURGNIGNAT, Bull. Soe. Mal. Fr., II, 1885, p. 6. Lake Tanganyika. NODULARIA BORELLII Ancey. * Unio borellii ANCEY, Bull. Soc. Zool. Fr., VII, 1894, p. 226, fig. 2.—* vON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 227. Lake Nyassa and vicinity. NODULARIA EMINI von Martens. * Unio emint VON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 224, pl. vit, fig. 14. Victoria Nyanza. NODULARIA BOHMI von Martens. * Unio bohmi VON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 223, pl. vil, fig. 9. Lake Tanganyika. NODULARIA AMBIFARIA von Martens. *Unio ambifarius VON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 225, pl. VII, fig. 20. Dar-es-Ssalam, East Africa. NODULARIA LECHAPTOISI Ancey. *Unio lechaptoisi ANCEY, Bull. Soc. Zool. Fr., VII, 1894, p. 228, fig. 3.—* VON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 226. Shire River, Lake Nyassa. —— = 1 Doubtfully distinct from gabonensis. 824 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL XXIL. NODULARIA LIEDERI von Martens. *Unio liederi VON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 226, pl. vu, fig. 19. Lake Nyassa. NODULARIA CALATHUS Bourgnignat.! * Unio calathus BOURGNIGNAT, Esp. Ouk. et Tan., 1885, p. 23. Tanganyika. NODULARIA BAKOYI Rochebrune. *Unio bakoyi ROCHEBRUNE, Bull. Soc. Phil., 7th ser., VI, 1882, p. 33. ‘Bakoy, High Senegal. . NODULARIA RADIOTA Charmes. * Unio radiotus CHARMES, Bull. Soc. Mal. Fr., II, 1885, p. 166. Central Africa. NODULARIA JULIANI Rang. * Unio juliani RANG, Nouv. Ann. Mus., 1835, p. 309. Senegal. (Group of Nodularia kunenensis.) Shell elliptical, subinflated, solid, narrowly biangulate bebind, the point of the shell being about midway up the height, the post-base inflated, beaks full, eroded in the specimen figured but no doubt zigzag sculptured; whole surface of the shell covered with wavy corrugations; epidermis brownish; one rather solid, deeply incised pseudocardinal in the right valve, two in the left; nacre yellowish white; muscle scars deep. Animal unknown. NODULARIA KUNENENSIS Mousson. * Unio kunenensis MOUSSON, Jl. de Conch., XXXV, 1887, p. 300, pl. x.1, fig. 10.— *SmiTH, Ann. and Mag., VIII, 1891, p. 319. Head ot Kunene River, North Ovampo, Southwest Africa. Section CAFFERIA Simpson, 1900, (Type, Unio caffer Krauss.) Shell elongated or elliptical, rhomboid and solid when old; beaks full, the scuipture corrugated zigzag, the ridges often extending over the disk; epidermis yellowish-brown to nearly black, dull colored, some- what suleate; teeth rather strong, muscle scars deep, well defined. (Group of Nodularia caffer. Characters as in the section.) 1This and the following species are unfigured, and are referred by von Martens and others to this group. I know nothing of them. I am a little in doubt as to the affinities of some of the above-figured species which I have not seen, but they are placed here on the excellent authority of von Martens. ee a No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON, 825 t+NODULARIA CAFFER Krauss. *Unio caffer Krauss, Sud. Af. Moll., 1848, p. 18, pl. 1, fig. 14.—* Kuster (part), Conch. Cab. Unio, 1856, p. 143, pl. xLu, fig. 2.—* HANLEY, Biv. Shells, 1856, p. 385, pl. xx1, fig. 40.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 493.— *SowERsy, Conch. Icon., XVI, 1866, pl. xt, fig 226.—* Smita, Ann. and Mag., VIII, 1891, p. 317.!—* P# TEx, Conch. Sam., IIT, 1890, p. 147. * Margaron (Unio) caffer LEA, Syn., 1852, p. 32; 1870, p. 48. *2Unio schwerzenbachii BOURGUIGNAT, Rey. et Mag., 1856, p. 71.—* SowERBY, Conch. Icon., XVI, 1866, pl. xLiv, fig. 241. *+ Unio verreauxianus LEA, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 94; Obs., VI, 1857, p- 21, pl. xxvi, fig. 16; Jl. Ac. N. Sci. Phila., III, 1858, p. 301, pl. xxvu, fig. 16.—* SowERBY, Conch. Icon., XVI, 1868, pl. LXIx, fig. 352,—* PaTEL, Conch, Sam., III, 1890, p. 171. * Margaron (Unio) verreauxianus LEA, Syn., 1870, p. 36. * Unio verreauxt P&TEL, Conch. Sam., III, 1890, p. 171. *Unio navigoliformis Lra, Pr. Ac. N. Sci. Phila., XI, 1859, p. 152; Jl. Ac. N. Sci. Phila., IV, 1860, p. 248, pl. xxxvu, fig. 124; *Obs., VII, 1860, p. 63, pl. XXXVU, fig. 124.—*REEVE, Conch. Icon., XVI, 1865, pl. xxiv, fig. 114.— “PHTrEL, C. Sam., IL], 1890, p. 160. * Margaron (Unio) navigoliformis Lea, Syn., 1870, p. 31. *t Unio natalensis LEA, Pr. Ac. N. Sci. Phila., VIII, 1864, p. 113; *J1. Ac. N. Sei. Phila., VI, 1866, p. 59, pl. xx, fig.57; * Obs., XI, 1867, p. 63, pl. Xx, fig. 57.—* SOWERBY, Conch. Icon., X VI, 1868, pl. LXXx1, fig. 362.—* P&TEL, Conch. Sam., III, 1890, p. 160. * Margaron (Unio) natalensis LEA, Syn., 1870, p. 32. * Unio rectilinearis SOWERBY, Conch. Icon., XVI, 1868, pl. Lxv, fig. 332.2 +NODULARIA CAFFER var. AFRICANA Lea. * Unio africanus Lma, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 94; *J1. Ac. N. Sci. Phila., III, 1857, p. 300, pl. xxvut, fig. 115; *Obs., VI, 1857, p. 20, pl. xxvit, fig. 15.— *ReEVE, Conch. Icon., XVI, 1865, pl. x x11, fig. 100. * Margaron (Unio) africanus LEA, Syn., 1870, p. 48. * Unio caffer KUSTER (part), Conch. Cab. Unio, 1856, p. 143, pl. XLu, fig. 3. * Unio niloticus KUSTER, Conch. Cab. Unio, 1856, p. 158, pl. XLv, fig. 5. +NODULARIA CAFFER var. VAALENSIS Chaper. * Unio vaalensis CHAPER, Bull. Soc. Zool. Fr., X, 1885, p. 480, pl. x1, figs. 1-3.— *PaTEL, Conch. Sam., III, 1890, p. 171. South Africa. NODULARIA TRAVERSII Pollonera.’ * Unio traversii POLLONERA, Bull. Soc. Mal. It., XIII, 1888, p. 85, pl. 111, figs. 14, 15. Hawash River, Shoa, Africa. 1 According to Smith the above, U. verreauxianus Lea, africanus Lea, natalensis Lea, and vaalensis Chaper, are all one species. I think he is right, but it seems to me that one or two of these forms are worthy of varietal names. I have seen the types of most and anthentic specimens of all of them. 2Said to come from the Columbia River, but it did not. 3Possibly a variety of N. caffer. 826 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXIL NODULARIA JICKELI Simpson. * ?Unio teretiusculus JICKELI,! Faun. Moll. N. O. Af., 1874, p. 276, pl. x1, figs. 3, 3a, 3b. Northeast Africa. NODULARIA ACUMINATA H. Adams. * Unio acuminatus H. ADAMS, Pr. Zool. Soc. Lond., 1866, p. 376.—* P TEL, Conch. Sain., IIT, 1890, p. 143.—*SmirnH, Ann. and Mag., X, 1892, p. 127, pl. xu, fig. 12.—* VON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 227, pl. vu, figs. 11, 12. Lake Albert Nyanza. NODULARIA DEMBEZ Reeve. “Unio dembew REEVE, Conch. Icon., XVI, 1865, pl. xxrx, fig. 153.—* JICKELI, Faun. Moll. Af., 1874, p. 275, pl. 1x, figs. 3-4.—* ROSSMASSLER, Bull. Soe. Mal. It., XIII, 1888, p. 84.—* P& TEL, Conch. Sam., III, 1890, p. 150. Abyssinia. NODULARIA LOURDELLI Bourguignat. *Unio lourdelli BOURGUIGNAT, Bull. Soc. Mal. Fr., IV, 1887, p. 271.—* SmitTH, Ann. and Mag., X, 1892, p. 128, pl. x11, figs. 13-15.—* VON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 228. Victoria Nyanza Lake. NODULARIA ABYSSINICA von Martens. “Unio abyssinicus VON MARTENS, Mal. B1., XIIL, 1866, p. 102; * XIV, 1867, p. 17.— *JICKELI, Faun. Moll. N. O. Af., 1874, p. 278, pl. 1x, fig. 5; x, fig. 10.— * PHTEL, Conch. Sam., IIL, 1890, p. 143. Abyssinia. NODULARIA DIMINUTA Lea. * Unio diminutis Lea,? Pr. Ac. N. Sci. Phila., III, 1859 p. 151; * Jl. Ac. N. Sci. Phila., 1860, p. 254, pl. xxx1x, fig. 1384; *Obs., VII, 1860, p. 72, pl. xxx1x, fig. 134.— * REEVE, Conch. Icon., XVI, 1865, pl. xx vu, fig. 141.—* JicKELI, Faun. Moll. Af., 1874, p. 280.—* P&TEL, Conch. Sam., III, 1890, p. 150. * Margaron (Unio) diminutus LEA, Syn., 1870, p. 31. ~ Unio gratiosus P#TEL, Conch. Sam., III, 1890, p. 154. East Africa. The following untfigured species are said to belong here: * Unio mandinguorum ROCHEBRUNE, Bull. Soc. Phil., 7th ser., VI, 1882, p. 34. Bakoy, High Senegal. * Unio zeyheri MENKE, Zeits. fiir Mal., VI, 1848, p. 28. South Africa. ‘Not teretiusculus Philippi, but a larger elongate solid rhomboid form, which is certainly distinct. I therefore name it in honor of Jickeli. 2So in the first published description, probably a typographical error. I am not certain as to the relationships of the species, but presume that it belongs here. ~~ NO. 1205. SYNOPSIS OF THE NAITADES—SIMPSON. 827 (Group of Nodularia fissidens.) Shell solid, compressed, subelliptical to subrhomboid, with rather full beaks, which have radiate, corrugated sculpture extending out on the disk as wavy sulcations, and changing near the edge to plain suleations; posterior ridge low, rounded; hinge strong; right valve with two pseudocardinals, the lower the larger, showing a tendency to split up, and having a gape in the plate behind, and having one lateral; two pseudocardinals in the left, somewhat split, and two laterals; muscle scars deep, distinct. NODULARIA FISSIDENS Bottger. * Unio ( Hyridella) fissidens BOTTGER, Ber. Senck. Ges., 1886, p. 27, pl. 11, figs. 6ab,7ab. Kalahari Desert. Southwest Africa. NODULARIA HYGAPANUS Battger. *Unio (Hyridella) hygapanus BOTTGER, Ber. Senck. Ges., 1886, p. 26, pl. 11, fig. 6. Kalahari Desert. Iam not certain as to the relationships of these two species. Genus HARMANDIA Rochebrune, 1882. (Type, Harmandia somboriensis Rochebrune. ) Harmandia ROCHEBRUNE, Bull. Soc. Phil., VI, 1882, p. 45. Shell subtrapezoidal, subalate, rather thin, posteriorly compressed, with low beaks and irregularly radial sculpture, a few of the ribs con- verging at the center of the disk, the rest becoming divaricate and covering the shell, those of the posterior slope springing from the rib on the low, posterior ridge; epidermis gray green; left valve with two arcuate, compressed, elongate pseudocardinals in front and a triangular cardinal under the beak, the right with two pseudocardinals in front and a pit under the beak; there are two nearly straight lamellar laterals in each valve, and a small, up-curved lamella above them near their posterior ends; anterior muscle scars deep; nacre white, brilliant, show- ing the outside sculpture. Animal unknown. HARMANDIA SOMBORIENSIS Rochebrune. * Harmandia somboriensis ROCHEBRUNE, Bull. Soc. Phil., VI, 1882, p. 46, pl. 1, figs. 1-3.. = Rapids of Sombor sombor, Mekong. Genus GRANDIDIERIA Bourguignat, 1885. (Type, Unio burtoni Woodward. ) Grandidieria BOURGUIGNAT, Bull. Soc. Mal. Fr., II, 1885, p. 6. Shell small, oval, rounded or rhomboid, solid, much inflated, generally narrowly biangulate behind, often apparently of two forms, one more 828 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. inflated in the basal and post-basal parts than the other; beaks high, and pointed, curved forward and inward, very delicately and beauti- fully sculptured with zigzag lire, which become finely nodulous and sulcate on the disk, especially in front and behind; posterior ridge well developed, often slightly double; hinge line curved; two pseudocardi- nals in the right valve separated by a parallel-sided socket, one or two in the left, with often an irregular, triangular, ragged tooth under the beak which is frequently reflexed; one obliquely striate lateral in the right valve and twoin the left; nacre of peculiarly soft, rich texture, white, coppery, or purplish, delicately radiate; beak cavities moderate; muscle sears distinet.! +GRANDIDIERIA BURTONI Woodward. “Unio burtont WOODWARD, Proc. Zool. Soc. Lond., 1859, p. 348, pl. xivu, fig. 2; *Ann. and Mag., V, 1860, p. 338.—*SoweErBy, Conch. Icon., XVI, 1866, pl. XLVH, fig. 251.—* Smiru, Proc. Zool. Soc. Lond., 1881, p. 297, pl. xxxrv, figs. 33, 83b.—* VON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 237. * Margaron (Unio) burtont LEA, Syn., 1870, p. 31. * Grandidieria burtoni BOURGUIGNAT, Bull. Soc. Mal. Fr., II, 1885, p. 6. * Grandidieria cyrenopsis BOURGUIGNAT, Bull. Soc. Mal. Fr., II, 1885, p. 9, pl. 1, figs. 7-9; *Teon. Mal. Tan., 1888, pl. x1X, figs. 1-3. GRANDIDIERIA BURTONI var. SERVAINIANA Bourguignat. * Grandidieria servainiana BOURGUIGNAT, Bull. Soc. Mal. Fr., II, 1885, p. 6. _* Unio burtoni var. servainiana VON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 238. GRANDIDIERIA BURTONI var. INSIGNIS Bourguignat. * Grandidieria insignis BOURGUIGNAT, Esp. Ouk. Tan., 1885, p. 16. *Unio burtoni var. insignis VON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 238. GRANDIDIERIA BURTONI var. STURANYI von Martens. Grandidieria STURANY, Baumann, Durch Massailand, 1894, p. 6, pl. xxIv, fig. 81; XOXGV AULD Unio burtoni var. sturanyi VON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 288. Lake Tanganyika. +GRANDIDIERIA TANGANYICENSIS Smith. “Unio tanganyicensis SMITH, Proc. Zool. Soc. Lond., 1880, p. 351, pl. xx x1, p. 9, 9a; *Proc. Zool, Soc. Lond., 1881, p. 298, pl. Xxxxrv, fig. 35.—* Pa&TEL, Conch. Sam., ILI, 1890, p. 169.—* von MARTENS, Besch. Deuts. Ost-Af., 1897, p. 240. * Grandidieria tanganikana BOURGUIGNAT, Bull. Soe. Mal. Fr., II, 1885, p. 7. Lake Tanganyika. 1Bourzuignat, by a most brilliant stroke, placed this group in the Corbiculide, and stated that he knew twenty-five species, and had no doubt that there would be at least one Jiundred when a thorough search is made. The group is an exceedingly difficult and variable one, and, judging from the large number of species he has founded on the most trivial variations, we may consider it exceedingly fortunate that he never saw the other seventy-five. I have seen but a limited amount of material, but I am led to believe that two forms of the same species often exist, as in Lamp-~ silis and allied genera, and which may be inale and female shells. I know nothing of the animal and Iam unable to do justice to the genus. : a ae , mn — NO. 1205. SYNOPSIS OF THE NAIA DES—SIMPSON. 829 +GRANDIDIERIA SMITHI Bourguignat. *Unio burtont SMITH (part), Proc. Zool. Soc., 1881, pl. XXxIv, fig. 33a. * Grandidieria smithi BOURGUIGNAT, Bull. Soc. Mal. Fr., II, 1885, p. 7. * Unio burtoni var. smithti VON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 238. Lake Tanganyika. GRANDIDIERIA GRAVIDA Bourguignat. *Grandidieria gravida BoURGUIGNAT, Bull. Soc. Mal. Fr., II, 1885, p.7, pl. 1, figs. 1-6; *Icon. Moll. Tan., 1888, p, 41, pl. xv111, figs. 11-16. * Grandidieria rostrata BOURGUIGNAT, Bull. Soc. Mal. Fr., 11, 1885, p. 10, pl.1, figs. 10-12; *Icon. Moll. Tan., 1888, p. 41, pl. xvu11, figs. 17-19. *Unio rostralis VON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 238. Lake Tanganyika. +GRANDIDIERIA THOMSONI Smrh. * Unio thomsoni SmirH, Ann. and Mag., VI, 1880, p. 480; * Proc. Zool. Soc. Lond., 1881, p. 299, pl. Xxxrv, fig. 36.—* CrossE, Jl. de Conch., XXIV, 1881, p. 133.— *VoNn MARTENS, Besch. Deuts. Ost-Af., 1897, p. 240. * Grandidieria thomsoni BOURGUIGNAT, Bull. Soc. Mal. Fr., I, 1885, p. 7; * Moll. Gir. Tan., 1885, p. 100. * Grandidieria corbicula BOURGUIGNAT, Not. Prod., 1885, p. 100; *Moll. Gir. Tan., 1885, p. 100; *Tcon. Moll. Tan., 1888, p. 43, pl. xrx, figs. 10-12. * Grandidieria granulosa BOURGUIGNAT, Not. Prod., 1885, p. 102; *Icon. Moll. Tan., 1888, p. 43, pl. xix, figs. 1, 2. *“Grandidieria singularis BOURGUIGNAT, Icon. Moll. Tan., 1888, p. 43, pl. X1x, figs. 18-20, Lake Tanganyika. GRANDIDIERIA RHYNCHONELLA Bourgingnat. *Grandidieria rhynchonella BOURGUIGNAT, Icon. Moll. Tan., 1888, p. 43, pl. XIX, figs. es 16, 17. Lake Tanganyika. GRANDIDIERIA CALLISTA Bourg ngnat. *Grandidieria callista BOURGUIGNAT, Icon. Moll. Tan., 1888, p. 43, pl. x1x, figs. 13-15.! Lake Tanganyika. GRANDIDIERIA BOURGUIGNATI Joubert. * Grandidieria bourguignatt JOUBERT in Bourguignat, Icon. Moll. Tan., 1888, p. 43, pl. XIX, figs. 7-9. Lake Tanganyika. GRANDIDIERIA ANCEYI Bourguignat. * Unio burtoni SmirH, (part) Proc. Zool. Soc. Lond., 1881, p. 297, pl. XXXIV, fig. 38a. *Grandidieria anceyi BOURGUIGNAT, Esp. Ouk. et-Tan., 1885, p. 15; Moll. Tan., 1888, p. 43, pl. xix, figs. 4-6.2 Lake Tanganyika. ' Probably a strangely distorted form of some other species. 27 am satisfied that Smith’s figure 33a is not burloni, but a valid species—G. anceyi Bourguignat.. 830 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. The following are unfigured species of Grandidieria: G. rotundata Bourguignat, Not. Prod., 1885, p. 98. 7. mira Bourguignat, Not. Prod., 1885, p. 96. G. locardiana Bourguignat, Esp. Ouk., 1885, p. 18. +. incarnata Bourguignat, Moll. Gir., 1885, p. 101. G. giraudi Bourguignat, Not. Prod., 1885, p. 95. G. elongata Bourguignat, Moll. Gir., 1885, p. 14. Genus PHYSUNIO, Simpson, 1900. (Type, Unio gravidus Lea. ) Shell thin, irregularly obovate, narrowed in front, decidedly produced at post base, pointed behind and -posteriorly winged, with a moderate posterior ridge and often a second or third faint ridge above it; beak sculpture zigzag radial, somewhat disposed in two sets, the one down the posterior ridge slightly nodulous; posterior slope having irregular radial corrugations, the rest of the shell smooth; epidermis often cloth- like, with one or more green rays on the posterior slope; hinge line curved; a single obliquely granularly striate pseudocardinal and gen- erally three laterals in the left valve, and two pseudocardinals and two laterals in the right, all greatly compressed; beak cavities deep; mus- cle scars irregular; nacre bright, bluish, and iridescent. Animal unknown. Section PHYSUNIO Simpson, 1900. (Type, Unio gravidus Lea.) Shell inflated; beak cavities deep and rounded. + PHYSUNIO GRAVIDUS Lea. * Unio gravidus LEA, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 93; Obs., VI, 1857, p. 12, pl. XXIV, fig. 5; Jl. Ac. N. Sci. Phila., Dl, 1858; p. 2925 pl. xxiv, igo. *von MARTENS, Pr. Zool. Soc. Lond., 1860, p. 14.—* SowERBy, Conch. Icon., XVI, 1866, pl. Li, fig. 271.—* More et, Ser. Conch., IV, 1875, p. 347.— *PmTEL, Conch. Sam., III, 1890, p. 154. * Margaron (Unio) gravidus LEA, Syn., 1870, p. 28. * Lampsilis gravidus ROCHEBRUNE, Bull. Soc. Phil., VI, 1882, p. 43. * Unio abnormis MORELET, Rey. et Mag., XIV, 1862, p. 480. “Unio superbus SOWERBY, Conch. Icon., XVI, 1867, p. LIX, fig. 295. Siam; Cambodia; Cochin China. +PHYSUNIO SUPERBUS Lea. * Unio superbus LEA, Desc. 12 New Uniones, 1843 (no pagination); Tr. Am. Phil. Soc., IX, 1845, p. 281, pl. xu, fig. 11; Obs., IV, 1848, p. 39, pl. xi, fig. 11.— H. and A. ADAMs, Gen. Ree. Moll., II, 1857, p. 498.—* VON MARTENS, Mal. B1., XIV, 1866, p. 14.—* P&TEL, Conch. Sam., III, 1890, p. 169. *Margaron (Unio) superbus LEA, Syn., 1852, p. 19; 1870, p. 28. * Unio velaris HANLEY, Biv. Shells, 1856, p. 385, pl. xxl, fig. 42.! *Unio massini MORELET, J]. de Conch., XII, 1864, p. 288; Ser. Conch., IV, 1875, p. 348, pl. xv, figs. 1, 3.—* Pa&TEL, Conch. Sam., III, 1890, p. 158. Sumatra; Cochin China. 1 Credited to Benson manuscript. 3 ai No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 831 PHYSUNIO CROSSEI Deshayes and Julien. *Unio crossei DESHAYES and JULIEN, N. Arch, Mus., X, 1874, p. 124, pl. v1, figs. 5-7.—* P®TEL, Conch. Sam., III, 1890, p. 149. Cambodia; Cochin China. +PHYSUNIO MICROPTERUS Morelet. *Unio micropterus MORELET, Jl. de Conch., XIV, 1866, p. 63; Ser. Conch., IV, 1875, p. 349, pl. xv, fig. 7.—* Pa TEL, Conch. Sam., HI, 1890, p. 158. Siam; Cambodia. PHYSUNIO SEMIALATUS Deshayes and Julien. *Unio semialatus DESHAYES and JULIEN, N. Arch. Mus., X, 1874, p. 123, pl. v1, figs. 1, 2.) Siam; Cambodia. tPHYSUNIO CAMBODIENSIS Lea.? * Unio cambodiensis LEA, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 103; Jl. Acad. N. Sci. Phil., III, 1857, p. 318, pl. xxx, fig. 28; Obs., VI, 1857, p. 33, pl. xxx, fig. 28. * Margaron (Unio) cambodiensis LEA, Syn., 1870, p. 42. Takrong River at Korat, Cambodia. Section LENS Simpson, 1900. “ (Type, Unio eximius Lea. ) Shell sublenticular; three laterals of left valve distinct; cavity of the beaks compressed. t PHYSUNIO EXIMIUS Lea. * Unio eximius LEA, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 93; Obs., VI, 1857, p. 14, pl. xxv, fig. 8; Jl. Ac. N. Sci. Phila., III, 1858, p. 294, pl. xxv, fig. 8.— * VON MARTENS, Pr. Zool. Soc. Lond., 1860, p. 15.—* SOWERBY, Conch. Icon., XVI, 1868, pl. LXXxIX, fig. 481.—* PHTEL, Conch. Sam., IIT, 1890, p. 152. * Margaron (Unio) eximius LEA, Syn., 1870, p. 28. Unio semiquadrata SOWERBY, Conch. Icon., XVI, 1866, pl. xLvilII, fig. 258. ~ Unio semiquadratus P&TEL, Conch. Sam., III, 1890, p. 167. Siam; Cambodia. PHYSUNIO VELARIS Sowerby. * Unio velaris SOWERBY, Conch. Icon., XVI, 1868, pl. Lxxi, fig. 368.3—* P@TEL, Conch. Sam., IIT, 1890, p. 171. Assam. ‘Fischer believes that the above equals U. micropterus Morelet (Cat., p. 142). I feel sure he is wrong, and that this is a valid species. 27 have only seen the type of this, a very young shell, but it probably belongs to the gravidus group. *A compressed shell of a uniform yellow color, probably only a variety of eximius. PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. CO SS) bo Genus DALLIELLA Simpson 1900. (Type Anodonta purpurea Valenciennes.') Shell subtrapezoidal, generally thin, inflated, with a low, rounded posterior ridge and rather full beaks which have somewhat zigzagged radial sculpture, with a row of chevron-shaped folds running some dis- tance down the posterior ridge, and with fine corrugations in front of the beaks; epidermis somewhat cloth-like; substance of the shell of a peculiar purplish-brown tint; hinge line narrow; teeth imperfect] developed, sometimes reduced to mere rudiments, when present con- sisting of greatly compressed, feeble, pseudocardinals and laterals; beak cavities rather shallow; dorsal scars one to a few, scattered; muscle scars faint; prismatic border wide. Animal unknown. (Group of Dalliella purpurea.) Shell not biangulate behind, rather smooth; nacre coppery purple; teeth very faint, compressed. “I DALLIELLA PURPUREA Valenciennes. * dnodonta purpurea VALENCIENNES, Rec. Obs. Zool., IT, 1833, p. 236, pl. XLvuI bis, figs. 3, 3a, 3b.—* HANLEY, Test. Moll., 1842, p. 218.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 503.—* vON MARTENS, Mal. BI., XIV, 1866, p. 12.— *CLESSIN, Conch. Cab. Ano., 1876, p. 77, pl. x1x, fig. 1.—* Pa&TEL, Conch. Sam., III, 1890, p. 183. *Margarita (Anodonta) purpurea LEA, Syn., 1836, p. 51; 1838, p. 30. * Anodon purpurea CATLOW and REEVE, Conch. Nom., 1845, p. 67. *Margaron (Anodonta) purpurea LEA, Syn., 1852, p. 50; 1870, p. 79. *+ Anodonta burroughiana, Lra, Tr. Am. Phil. Soc., V, 1834, p. 105, pl. xv1, fig. 495 * Obs., I, 1834, p. 217, pl. x v1, fig. 49.—* CLEsSIN, Conch. Cab. Ano., 1875, p. 164, pl. Lrv, figs. 3, 4.—* Pare, Conch. Sam., III, 1890, p. 177. * Margaron (Anodonta) burroughana, LA, Syn., 1870, p. 81. * Anodon burroughianus, SOwERBY, Conch. Icon., XVII, 1870, pl. xxvu, fig. 103. *+ Margarita (Unio) bengalensis Lra, Syn., 1836, p. 26; 1838, p. 20. * Unio bengalensis Lea, Tr. Am. Phil. Soc., VI, 1838, p. 3, pl. 1, fig. 3; * Obs., II, 1838, p. 3, pl. 1, fig. 3.—* TroscHEL, Arch. fiir Nat., V, 1839, pl. m1, p. 233.— * HANLEY, Test. Moll., 1842, p. 194; * Biv. Shells, 1843, p. 194, pl. xx1, fig. 50.—* CaTLow and REEVE, Conch. Nom., 1845, p. 56.—* H. and A. ADAMS, Gen. Rec. Moll., I, 1857, p. 493. —* CHENU, Ill. Conch., 1858, pl. x x1J, figs. 2, 2a, 2b.—* KusTER, Conch. Cab. Unio, 1861, p. 228, pl. LXXx vu, figs. 2, 3.—* PATEL, Conch. Sam., ILI, 1890, p. 146. * Margaron ( Unio) bengalensis LEA, Syn., 1852, p. 30; 1870, p. 47. * dnodon bengalensis SOWERBY, Conch. Icon., XVII, 1867, pl. xiv, fig. 49. * Anodonta bengalensis CLESSIN, Conch. Cab. Ano., 1876, p. 173, pl. Lv, fig. 1.— *PaTEL, Conch. Sam., III, 1890, p. 177. ; *+ Unio verecundus GOULD, Pr. Bost. 8. N. Hist., III, 1850, p. 295; *U. S. Expl. Exp., XII, 1852, p. 431, figs. 541, 541a, 541b, 541¢; *Otia Conch., 1862, p. 89.— 18ome of the species placed here have been classed with dnodonta, but almost any large series of specimens of any species will show variation from edentulous to toothed forms. Se NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 833 *REEVE, Conch. Icon., XVI, 1865, pl. xxv, fig. 125.—* PaTeL, Conch, Sam., UDI, USO. yo. WAL, * Unio mauritianus LEA, Pr. Ac. N. Sci. Phila., III, 1859, p. 152; *J1. Ac. N. Sei. Phila., IV, 1860, p. 257, pl. Xu, fig. 188; *Obs., VII, 1860, p. 75, pl. x1, fig. 138, * Margaron (Unio) mauritianus Lea, Syn., 1870, p. 42. *? Anodonta heldii KusTER, Conch. Cab. Ano., 1873, p. 64, pl. XIX, fig. 1. Anodonta chinensis KUSTER? Where? Philippines. The localities India and Mauritius given for this species are no doubt erroneous. + DALLIELLA CREPERA Lea. Z * dnodonta crepera LEA, Pr. Zool. Soc. Lond., 1850, p. 198; *Ann. and Mag., VIII, 1851, p. 494.—* H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p.502.—* Lea, JI. Ac.N. Sei. Phila., IV, 1860, p. 238, pl. LXxxrv, fig. 117; *Obs., VII, 1860, p. 56, pl. xxxtv, fig. 117.—*CrxEssin, Conch. Cab. Ano., 1873, p. 97, pl. XXIX, figs, 5, 6.—* Pxret, Conch. Sam., III, 1890, p. 178. *? Anodon creperus SOWERBY, Conch. Icon., XVII, No. 16. Margaron (Anodonta) crepera L¥a, Syn., 1852, p.50; 1870, p. 80. Luzon Island, Philippines. +DALLIELLA TENUIS Lea. * Anodonta tenuis Lea, Pr. Zool. Soc. Lond., 1850, p. 198; *Ann. and Mag., VIII, 1851, p. 494; * Jl. Ac. N. Sci. Phila., IV, 1860, p. 237, pl. xxx111, fig. 116; * Obs., VII, 1860, p. 55, pi. xxxm1, fig. 116.—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 503.—* MusGRAVE, Phot. Conch., 1863, pl. 1, fig. 8.—* CLEssIN, Conch. Cab. Ano., 1873, p. 99, pl. xxx, figs. 3, 4.—* Pa:TEL, Conch. Sam., III, 1890, p. 185. *Margaron (Anodonta) tenuis LEA, Syn., 1852, p.53; 1870, p. 83. *Anodon tenuis SOwERBY, Conch. Icon., XVI, 1867, pl. xv, fig. 55. Luzon island, Philippines. + DALLIELLA SUBCRASSA Lea. “Anodonta subcrassa LEA, Pr. Zool. Soc. Lond., 1850, p. 198; *Ann. and Mag., VIII, 1851, p. 495; * Jl. Ac. N. Sci. Phila., IV, 1859, p. 236, pl. xx xutt, fig. 115; *Obs., VIII, 1860, p. 54, pl. xxx, fig. 115.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 503.—* MusGrAVE, Phot. Conch., 1863, pl. 1, fig. 3.—* CLEsstn, Conch. Cab. Ano., 1873, p. 98, pl. xxx1, figs. 1, 2.—*PmTEL, Conch. Sam., III, 1890, p. 185. : * Margaron (Anodonta) subcrassa LEA, Syn., 1852, p.51; 1870, p. 81. *dnodon subcrassa SOWERBY, Conch. Icon., XVII, 1867, pl. x11, fig. 42. Luzon. + DALLIELLA GRACILIS Lea. “Anodonta gracilis Lua, Pr. Zool. Soc. Lond., 1850, p. 197; *Ann. and Mag., VIII, 1851, p. 193; * Jl. Ac. N. Sci. Phila., IV, 1860, p. 239, pl. xx xiv, fig. 119; *Obs., VII, 1860, p.57, pl. xxxIv, fig. 119.—* H. and A. ApaAms, Gen. Ree. Moll., II, 1857, p. 503.—* CLEssIN, Conch. Cab. Ano., 1873, p. 99, pl. xxIx, figs. 3, 4.— *P#TEL, Conch. Sam., III, 1890, p. 180. *Margaron (Anodonta) gracilis LEA, Syn., 1852, p. 51; 1870, p. 82. Dingle, Isle of Panay, Philippines. Proc. N. M. vol. xxii 53 834 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. DALLIELLA SERRADELLI Drouet. *Unio serradelli DRoUET, J]. de Conch., XL, 1892, p. 86. Philippines. (Group of Dalliella insularis.) Shell subsolid, subrhomboidal biangulate behind, pseudocardinals and laterals blurred, not greatly compressed; nacre lurid, tinged purplish. +DALLIELLA INSULARIS Drouet. * Pseudodon insularis DROUET, Rey. Biol. Fr., V1, 1894, p. 217, fig. 2. Borneo; Palawan Island, Philippines. +DALLIELLA CRASSA Drouet. * Pseudodon crassus DROUBT, Jl. de Conch., XL, 1892, p.93.—*DROUET and CHAPER, Mém. Soc. Zool. de Fr., V, 1892, p.151, pl. v1, figs. 1-3. Borneo. The following is an unfigured species. * Unio semmelinki VON MARTENS, Sitzber. Ges. Nat. Fr. Ber., 1891, p. 111. Southeast Borneo. Possibly a Dalliella. Genus PSEUDODON Gould, 1844. (Type, Anodon salwiniana Gould.) Pseudodon GouLD, Pr. Bost. Soc. Nat. His., 1844, p. 161. Monodontina Conrad, Pr. Ac. N. Sei, Phila., 1853, p. 269. Trigonodon CONRAD, Am. J1. Conch., I, 1865, p. 233. Monocondylus MORELET, Rey. et Mag., 1866, p. 167. Pseudodus DE MORGAN, Bull. Soe. Zool. Fr., X, 1885, p. 422. Shell oval to elongate, having two posterior ridges and often one or two slight, radiating elevations above on the posterior slope, above which there is usually a small wing; beaks rather low, sculpture unknown;! epidermis dark, often having a few faint wrinkles on the posterior slope, without rays when adult. There is a single, smooth tooth in each valve, with occasional vestiges of a second; laterals nearly or quite wanting; beak cavities shallow; dorsal scars conspicu- ous, deep, distinct, 4 to 7 in a rowunder the hinge; anterior scars irreg- ular; nacre generally dull and lurid. Animal? having the branchiz wide and rounded behind, becoming 1One or two authors in describing species say that the beaks are entirely smooth. It is probable that in most cases they have zigzag radial sculpture. Although I have examined a large number of shells belonging to the group, many of which were young, they were all so badly eroded that the beak sculpture was entirely destroyed. 2Deshayes and Julien figure but do not describe the animal of P. moreleti in Nouv. Arch. de Mus., X, pl. v. Iam only able to make out part of the characters from this really excellent figure. No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 835 narrow in front; palpi enormously long, apparently slender, pointed behind, where they project free for some distance; mantle thin, with a wide, slightly thickened border, faintly papillose behind, there seeming to be but little distinction between anal and branchial openings; anal opening apparently smooth. Section SUBORBICULUS Simpson, 1900, (Type, Monocondylus orbicularis Morelet. } Sheli compressed, nearly round in outline, feebly biangulate, and hay- ing a posterior dorsal wing; beaks low; hinge with a single, com- pressed, smooth, slightly curved, triangular tooth in each valve. PSEUDODON ORBICULARIS Morelet. * Monocondylus orbicularis MORELET, Rey. et Mag., XVIII, 1866, p. 167. * Pseudodon orbicularis MORELET, Ser. Conch., IV, 1875, p. 338, pl. xv1, fig. 5. * Monocondylea orbicularis Pa&TEL, Conch. Sam., III, 1890, p. 174. Siam; Cambodia. Section TRIGONODON Conrad, 1865, Shell solid, compressed, rhomboid, round in front, widely and faintly biangulate and rough behind; surface irregularly concentrically wavy suleate; hinge with a strong triangular pseudocardinal in the right valve, having a decided excavation behind it, and at the posterior side of the pit a faint tooth; there is one strong triangular tooth in the left valve and a vestige of one in front of it at the upper edge of the shell; anterior scars irregular; dorsal scars crowded close to the hinge line. (Type, Monocondylea crebristriata Anthony.) tPSEUDODON CREBRISTRIATUS Anthony. * Monocondylea crebristriata ANTHONY, Am. Jl. Conch., I, 1865, p. 205, pl. xvi, fig. 1.—* PHZTEL, Conch. Sam., III, 1890, p. 174. * Trigonodon crebristriata CONRAD, Am. Jl. Conch., I, 1865, p. 233. * Margaron (Monocondylwa) crebristriata LEA, Syn., 1870, p. 72. * Unio crebristriatus SOWERBY, Conch. Icon., XVI, 1868, pl. xcv, fig. 517. * Pseudodon crebristriatum HANLEY and THEOBALD, Conch. Ind., 1876, p.5, pl. rx, fig. 3. * Unio vondembuschtti SowERBY, Conch. Icon., XVI, 1868, pl. xcv, fig. 518. {| PSEUDODON CREBRISTRIATUS var. PEGUENSIS Anthony. ! *Monocondylaa peguensis ANTHONY, Am. JI. Conch., I, 1865, p. 205, pl. xvi1u, fig. 2.—* PHTEL, Conch. Sam., IIT, 1890, p. 174. * Margaron (Monocondylwa) peguensis LEA, Syn., 1870, p. 73. *Pseudodon crebristriatum var. peguensis HANLEY and THEOBALD, Conch. Ind., 1876, p. 5, pl. Ix, fig. 5. Burma; Pegu; Cambodia?. ‘Typically quite different from P. crebristriatus, but our large series seems to show an almost complete connection. 836 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XX. Section PSEUDODON Gould, 1844, (Type, Anodon Salwimana Gould.) Characters given under generic name. (Group of Pseudodon harmandi.) Shell rather small, solid, rhomboid, short, inflated; posterior ridge high, only slightly biangulate, faintly corrugated, on the posterior Slope. + PSEUDODON HARMANDI Crosse and Fischer. * Pseudodon harmandi CROSSE and FISCHER, Jl. de Conch., XXIV, 1876, p. 331, pl. dE 4 aly 2p * Monocondylea harmandi P&TEL, Conch. Sam., III, 1890, p. 174. Cambodia. PSEUDODON AUREUS Heude. * Pseudodon aureus HEUDE, Conch. Fluv. Nank., IX, 1885, pl. Lx x11, fig. 140. * Margaritana aurea P#TEL, Conch. Sam., III, 1890, p. 172. China. (Group of Pseudodon vondembuschianus. ) Shell rather large, somewhat compressed, subsolid, elliptic-rhomboid, wider behind, where it is widely biangulate; teeth compressed. +t PSEUDODON VONDEMBUSCHIANUS Lea. * Margaritana vondembuschiana LEA, Pr. Am. Phil. Soc., I, 1840, p. 288; *Tr. Am. Phil. Soc., VIII, 1842, p. 222, pl. xvii, fig.39; *Obs., III, 1842, p. 60, pl. xvi, fig. 39.—* KusrEer, Conch. Cab. Unio, 1862, p. 295, pl. xcv1n, fig. 3. * Margaron (Monocondylwa) vondembuschiana LEA, Syn., 1852, p. 45; 1870, p. 73. * Monocondylea vondembuschiana H. and A. ADAMS, Gen. Rec. Moll., II, 1858, p. 501.—* Pre, Conch. Sam., III, 1890, p. 175. * Pseudodon vondembuschiana CONRAD, Am.J1. Conch., I, 1865, p. 233. * Monodontina buschiana CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, pp. 269, 449. *Unio von buschea SOWERBY, Conch. Icon., XVI, 1866, pl. LI, fig. 269. * Alasmodonta crispata Mousson, L. and Suss. W. Moll. Java, 1849, p. 97, pl. xvi, figs. 1, 2. * Margaritana crispata P&TEL, Conch. Sam., III, 1890, p. 175. t *Monocondylwa planulata Lea, Pr. Ac. N. Sci. Phila., XI, 1859, p.187; *Jl. Ac. N. Sci. Phila., IV, 1859, p. 262, pl. xu, fig. 142; *Obs., VII, 1860, p. 80, -pl. XLU, fig. 142.—*? KusTER, Conch. Cab. Unio, 1862, p. 305, pl. c, fig. 8. * Pseudodon planulata CONRAD, Am. J1.Conch., I, 1865, p. 233. * Microcondylea planulata P®TEL, Conch. Sam., III, 1890, p. 175. * Margaron (Monocondylea) planulata LEA, Syn., 1870, p. 73. * Margaritana fragilis KUSTER, Conch. Cab. Unio, 1862, p. 295, pl. xcvi1, fig. 2. * Microcondylea fragilis PaTEL, Conch. Sam., III, 1890, p. 175. * Monocondylwa rhombica KuSTER, Conch. Cab. Unio, 1862, p. 304, pl. c, fig. 7. Java; Sumatra; Borneo; Malacca. tPSEUDODON ELLIPTICUM Conrad. * Pseudodon ellipticwm CONRAD, Am. J1. Conch., I, 1865, p. 352, pl. xxv, fig. 1. Cambodia. ‘No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 837 + PSEUDODON ZOLLINGERI Mousson. * 4lasmodonta zollingeri Mousson, L. and Suss. Moll. Java, 1849, p. 96, pl. xvii, fig. 1. * Margaritana zollingert KustTER, Conch. Cab. Unio, 1862, p. 294, pl. xcviut, fig. 1- * Pseudodon zollingeri MORELET, Ser. Conch., IV, 1875, p. 337. * Monocondylwa zollingeri P#&TEL, Conch. Sam., III, 1890, p. 174. Java. +tPSEUDODON INOSCULARIS Gould. * Anodon inoscularis GOULD, Pr. Bost. Soc. N. H., I, 1844, p. 160.\—* Haniry and THEOBALD, Conch. Ind., 1876, p. 5, pl. 1x, fig. 2. *Margaron (Monocondylea) inoscularis Lea, Syn., 1870, p. 73. * Margaritana inoscularis P&TEL, Conch. Sam., III, 1890, p. 173. River Salwen, British Burma. tPSEUDODON CUMINGII Lea. * Anodonta cumingii La, Pr. Zool. Soc. Lond., 1850, p.199; “Ann. and Mag., VIII, 1851, p. 495.—*H. and A. ApaMs, Gen. Ree. Moll., II, 1857, p. 502.—* MUSGRAVE, Phot. Conch., 1863, pl.1, fig. 6.—*PaTEL, Conch. Sam., III, 1890, p. 178. *Margaron (Monocondylea) cumingit LEA, Syn., 1852, p. 50; 1870, p. 73. * Monocondylwa cumingii LEA, J]. Ac. N. Sci. Phila., 1V, 1860, p. 235, pl. xx x11, fig. 114; *Obs., VII, 1860, p. 53, pl. xx x11, fig. 114. *Pseudodon cumingii CONRAD, Am. Jl. Conch., I, 1865, p. 233. *Anodon cumingii REEVE, Conch. Icon., XVII, 1870, pl. XxX1, fig. 122. * Microcondylea cumingii CLESSIN, Conch. Cab. Ano., 1876, p. 259, pl. LXxx1u1, figs. 3, 4.—* PeTeL, Conch. Sam., III, 1890, p. 175. * Pseudodus cumingii DE MORGAN, Bull. Soe. Zool. de Fr., X, 1885, p. 422. Malacca; Perak; Siam; Cambodia. tPSEUDODON AZNEOLUS Drouet. * Pseudodon wneolus DROUET, Jl. deConch., XL, 1892, p. 94.—* DROUETand CHAPER, Mem. Soc. Zool. de Fr., V, 1892, p. 152, pl. vi, figs. 4-7. Borneo. tPSEUDODON TUMIDUS Morelet. * Monocondylus tumidus MORELET, Jl. deConch., XIV, 1866, p62." MABILLE, Rev. Zool., XXIII, 1872, p. 51, pl. v, figs. 6, 7. * Pseudodon tumidus MORELET, Ser. Conch., IV, 1875, p. 337, pl. xvi, fig. 1. Siam; Cambodia. PSEUDODON OVALIS Morlet. * Pseudodon ovalis Mor-er, Jl. de Conch., XX XVII, 1889, p. 197, pl. vil, fig 3. Srakeo River, Sian. 1Gould did not figure this, but the figure in the Conchologia Indica accurately represents his species, judging from a cotype in Lea’s collection, sent him by Dr. Gould. A number of these Psendodons are very close, and it is quite probable that some of them must be united when sufficient material is studied. 838 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XX, PSEUDODON THOMSONI Morlet. * Pseudodon thomsoni MORLET, Jl. de Conch., XXXII, 1884, p.401, pl. x11, figs. 2, 2a. y) a * Margaritana thomsoni P&TEL, Conch. Sam., III, 1890, p. 174. Cambodia. +tPSEUDODON SALWENIANUS Gould. * Anodon salwenianad GOULD, Pr. Bost. Soc. N. Hist., I, 1844, p. 160. * Anodonta salweniana GOULD, Otia Conch., 1862, p. 193. * Pseudodon salweniana CONRAD, Am. Jl. Conch., I, 1865, p. 238. * Monocondylaa salweniana P&TEL, Conch. Sam., III, 1890, p. 174. * Unio salwenianus SOWERBY, Conch. Icon., XVI., 1868, pl. xcIv, fig. 513. * Margaron (Monocondylea) salweniana LEA, Syn., 1870, p. 72. * Pseudodon salwenianum HANLEY and THEOBALD, Conch. Ind., 1876, p. 5, pl. rx, fig. 4. ; * Unio salwenianus P&TEL, Conch. Sam., III, 1890, p. 166. River Salwen, British Burma. +PSEUDODON MORELETI Crosse and Fischer. * Monocondylaa tumida DESHAYES and JULLIEN, Nouy. Arch. de Mus., X, 1874, p. 117, pl. v, figs. 1-3.} *Pseudodon moreleti CROSSE and FiscHER, Jl. de Conch., XX V, 1876, p. 330. Cainbodia. +PSEUDODON CAMBODJENSIS Petit. * Monocondylea cambodjensis PETIT, Jl. de Conch., VI, 1865, p. 1." P2TEL, Conch. Sam., III, 1890, p. 174. * Margaron (Monocondylea) cambodjensis LEA, Syn., 1870, p. 72. * Pseudodon cambodjensis CONRAD, Am. J]. Conch., I, 1865, p. 233.—*MoRteE?, J. de Conch., XXXII, 1866, p. 266. Cambodia; Tonkin. PSEUDODON CHAPERI de Morgan. * Pseudodus chaperi DE MORGAN, Bull. Soc. Zool. de Fr., X, 1885, p. 423, pl. 1x, figs. 1, 2. Cambodia; Sian. The following species is unfigured: PSEUDODON NICOBARICUS Méorch. Alasmodonta (subg.?) nicobarica MOrcH, JI. de Conch., XX, 1872, p. 327.2 Nicobar Islands. 1 This fine, large shell which Deshayes and Jullien supposed to be P. tumidus of Morelet is quite a different thing, and Crosse and Fischer have given it a new name. 2Morch describes the above under the name Alasmodonta (subgenus?) nicobarica, and credits it to Fabricius. The Mytilus nicobaricus of the latter was only a nomen nudum. Morch says his species is close to Anodonta zollingeri. NO. 1205. SYNOPSIS OF THE NAITADES—SIMPSON. §39 Section BINEURUS Simpson, 1900. Shell elongate rhomboid, thin, rounded in front, widely and feebly biangulate behind, having two or more raised radiating lines on the posterior slope, which is somewhat obliquely wrinkled; beaks low; sur- face finely, irregularly, concentrically grooved; epidermis olive; teeth smooth, compressed; nacre bluish. Animal unknown. (Type, Monocondylewa mouhoti Lea.) +PSEUDODON MOUHOTI Lea. * Monocondylea mouhoti Lea, Pr. Ac. N. Sci. Phila., VII, 1863, p. 190. . * Pseudodon manhotti CONRAD, Am. Jl. Conch., I, 1865, p. 233. * Monocondylaa mouhotiana LEA, J], Ac. N. Sci. Phila., VI, 1866, p. 65, pl. xx1, fig. 62; *Obs., XI, 1867, p. 69, pl. x x1, fig. 62.—* Clessin, Conch. Cab. Ano., 1876, p. 261, pl. LXxx11, figs. 1, 2,—* PmTEeL, Conch. Sam., III, 1890, p. 175. * Margaron (monocondylwa) mouhotiana LEA, Syn., 1870, p. 73. * Unio mouhotianus SOwERBY, Conch. Icon., XVI, 1868, pl. xcu, fig. 503. * Pseudodon mouhotianus MORELET, Ser. Conch., IV, 1875, p. 339. Cambodia; Siam. PSEUDODON EXILIS Morelet. * Monocondylus exilis MORELET, JI. de Conch., XIV, 1866, p. 63. * Pseudodon exilis MORELET, Ser. Conch., IV, 1875, p. 340, pl. xvii, fig. 1. Perak. PSEUDODON AVA Theobald. * Monocondylea uva THEOBALD, Jl. As. Soc. Beng., XLII, Pt. 2, 1873, p. 209, pl. WAWAGG, Tye, Ilse! Mandelay, Burma. Section NASUS Simpson, 1900. (Type, Pseudodon nankingensis Heude. ) Shell somewhat solid, rather inflated, much elongated, with a well- developed posterior ridge, with a low, faint one above it, bluntly pointed at post-basal part; beaks not high, eroded in the specimens seen; epi- dermis dark; teeth compressed, high.’ Animal unknown. tPSEUDODON NANKINGENSIS Heude. * Monocondylea nankingensis HkupDs, Jl. de Conch., XXII, 1874, p. 116; Conch. Fluv. Nank., I, 1875, pl. rv, fig. 9. * Monocondylea nankingensis P ®TEL, Conch. Sam., III, 1890, p. 174. Rivers of Nankin. 1T am not certain that this belongs in this group. 2T have seen only a single shell of each of the two species of this group, both very badly eroded and decayed, so that I can not give the characters accurately. The animals may show that they are not closely related to the ordinary Pseudodons. 840 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL +PSEUDODON SECUNDUS Heude. * Pseudodon secundus HEUDE, Conch. Fluv. Nank., III, 1877, pl. xvi, fig. 38. Unio secundus P®TEL, Conch. Sam., III, 1890, p. 167. River How, China. Section OBOVALIS Simpson, 1900. (Type, Pseudodon loomisi Simpson.) Shell obovate subinflated, with a low, rounded posterior ridge, and with radiating wrinkles on the posterior slope; disk nearly free from wrinkles; epidermis blackish; there is a high, triangular tooth in each valve; laterals very faint, rounded; nacre coppery. Animal unknown. + PSEUDODON LOOMISI Simpson. * Pseudodon loomisi SIMPSON, Pr. Ac. N. Sci. Phila., 1900, p. 84, pl. rv, fig. 7. Japan. The following are unfigured or indeterminate species. Monocondylea walpolet HANLEY, Proc. Zool. Soc. Lond., 1871, p. 587. Borneo. Spatha compressa VON MaRrTews, Proce. Zool. Soc. Lond., 1860, p.66. Siam. Pseudodon sulcatum ROCHEBRUNE, Bull. Soc. Phil., 7th ser., VI, 1882, p. 41. Me- kong River, Cochin China. Pseudodon pierri ROCHEBRUNE, Bull. Soc. Phil., VI, 1882, p.41. Cochin China. Pseudodon mabillei ROCHEBRUNE, Bull. Soc. Phil., VI, 1882, p.41. Cochin China, Cambodia. Pseudodon anodontinus ROCHEBRUNE, Bull. Soc. Phil., VI, 1882, p. 41. Cambodia. Genus PARREYSIA Conrad, 18858. (Type, Unio multidentatus Philippi.) Parreysia CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 267.: Shell solid, inflated, oval to subrhomboid, with full, high, zigzag, radially sculptured beaks, the sculpture often extending over the disk; epidermis smooth and bright, sometimes a little rayed, with two irreg- ular pseudocardinals in the left valve which are more or less broken into ragged denticles or are strongly, vertically striate, and two later- als, the lower the larger; right valve with one, sometimes two pseudo- cardinals, the upper small, compressed, and a few tubercles behind them, with two laterals, the upper the larger; cavity of the beaks rather deep, not compressed; dorsal scars under the hinge, not visible; the two upper anterior muscle scars. very deep, coniluent, the lower linear; nacre white to salmon, iridescent behind. Animal unknown. Subgenus PARREYSIA Conrad, 1853. Characters the same as the genus. 1In the above reference Conrad gives the name Parreysia and refers to Unio multi- dentatus Parreyss, which may be taken as the type. I do not know that he ever described the group. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. S41 (Group of Parreysia corrugata.) Shell having the middle of the basal region swollen, beak sculpture strong, the central ridges generally united at their lower points to form chevron-shaped markings. tPARREYSIA CORRUGATA Miiller. * Mya corrugata MULLER,’ Verm. Terr. et Fluv., 1774, Pt. 2, p. 214; * Besch. Ges, Nat. Ber., 1V, 1779, p. 56, pl. 1110, figs..7, 8.—*GMELIN,” Sys. Nat., 13th ed., 1788, p.3221.—* ScHrRoTER, Fluss, Conch., 1779, p. 181, pl. 1x, fig.3.—* Woop, Gen.Conch., I, 1815, p. 108, pl. xx1v, figs. 1-3.—* DILLWYN, Cat., I, 1817, p.52.— Mawe, Linn. Conch., 1823, pl. rv, fig. 3.—* Woop, Ind. Test., 1825, p. 12, pl. 11, fig. 31a; 1856, rev. ed., p. 16, pl. 11, fig. 31. _ * Unio corrugata LAMARCK,® An. sans Vert., VI, 1819, p. 78.—* DesHayeEs, Enc. Meth., II, 1827, p. 584, pl. ccxLvil1l, fig. 8. * Unio (Potamida) corrugata SWAINSON, Tr. on Mal., 1840, p. 268, fig. 515 p. 281, fig. 57. * Unio corrugata RETZIUS, Diss. Hist. Nat., 1778, p. 18.—* SPENGLER, Skriv. Selsk. Nat., III, 1793, p. 68.—* HANLEY, Test. Moll., 1842, p. 197; *Biv. Shells, 1843,p. 197.—* CaTLow and REEVE,Conch. Nom., 1845, p. 57.--* H. and A. ADAMs, Gen. Rec. Moll., II, 1857, pp. 493, 497.—-* KusrEer, Conch. Cab. Unio, 1862, p. 289, pl. xcvu, figs. 3, 4.—* BLaANrorp, Jl. As. Soc. Beng., XXXV, 1867, p. 136. —* SowERByY, Conch. Icon., XVI, 1868, pl. LXx1, fig. 360. —* HANLEY and THEOBALD, Conch. Ind., 1876, p. 21, pl. xLv, figs. 2-5. —* PaTEL, Conch. Sam., III, 1890, p. 149. * Margarita (Unio) corrugatus LBA, Syn., 1836, p. 29; 1838, p. 21. * Margaron (Unio) corrugatus LEA, Syn., 1852, p. 20; 1870, p. 30. * Mya spuria GMELIN, Syst. Nat., 13th ed., 1788, p.3°22; ~ Woon, Gen. Conch., I, 1815, p. 110.—* Lamarck, An. sans Vert., VI, 1819, p. 80. Mya gaditana ScureiBERs, Versuch., 1793, p. * Unio multidentatus PHILIPPI,+ Conch., III, 1847, p. 46, pl. 11, fig. 4.—* KusTER, Conch. Cab. Unio., 1856, p. 186, pl. XxxvVI, fig.5.—* P#TEL, Conch. Sam., III, 1890, p. 160. * Margaron ( Unio) multidentatus La, Syn., 1870, p. 50. * Unio fulmineus PHivipri,® Conch., III, 1847, p. 46, pl. 1, figs. 5, 6.—* KUSTER, Conch. Cab. Unio., 1862, p. 286, pl. XcVI, figs. 2, 3.—* P&TEL, Conch. Sam., III, 1890, p. 153. * Unio lutens LEA,6 Pr. Ac. Nat. Sci. Phila., VIII, 1856, p. 93. * Unio luteus LEA, Jl. Ac. N. Sci. Phila., 1II, 1857, p. 291., pl. xxiv, fig. 4; “Obs., VI, 1857, p. 11, pl. xxrv, fig. 4. 'Miiller’s description of Mya corrugata is inadequate, but in the Beschaftigungen it is further discussed and characteristic figures are given of the species we know as Unio corrugatus of India. 2Refers to Conch. Cab. VI, pl. m1, fig. 22, which is probably Miiller’s shell. Chemnitz refers to it as Mya corrugata teste ovali, etc. The shell referred to by him in Conch. Cab., X, p. 346, as Mya corrugata magna, etc., is avery different thing. 3Lamarck refers to. Enc. Meth. Pt. 19, 1797, pl. ccxLvul, figs. 6, 8a, b. Iam not at all sure that fig. 6 is the corrugatus of Miiller. 4Credited by Philippi to Parreyss. I think there can be no doubt that this is the Mya corrugata of Miiller, as the figure and description entirely agree with the species as we know it. 5Parreyss is the author, according to Philippi. This and multidentatus are credited by Philippi to Australia. No shells like these have ever been found there. 6 Lutens in text, by error no doubt. S42 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. * Margaron (Unio) luteus LEA, Syn., 1870, p. 46. * 2 Unio semirugatus CHENU, I]. Conch., 1858, pl. x11, figs. 2, 2a. *Unio merodabensis KUSTER, Conch. Cab. Unio, 1861, p. 233, pl. Lxxvui, fig. 4.— *BLANFORD, J. As. Soc. Beng., XXXV, 1866, p. 142.—* PxTeEL, Conch. Sam., ITI, 1890, p. 159. *Unio wynegungensis HANLEY and THEroBALD,! Conch. Ind., 1876, p. 21, pl. XLv, fig. 6 * Unio tennenti HANLEY and THEOBALD, Conch. Ind., 1876, p. 22, pl. xiv, figs. 7-9.— *PaxTEL, Conch. Sam., II], 1890, p. 169. *Unio phayresi THEOBALD, manuscript. PARREYSIA CORRUGATA var. LAXVIROSTRIS Benson. “Unio levirostris BENSON, Ann. and Mag., 1862, p. 192; *Jl. As. Soc. Beng., 1862, XXXV, p. 144.—* P&reL, Conch. Sam., III, 1890, p. 157. *Unio corrugatus var. levirostris HANLEY and THEOBALD, Conch. Ind., 1876, p. 21, pl. xiv, figs. 5, 6.—* Parr, Conch. Sam., III, 1890, p. 149. | PARREYSIA CORRUGATA var. NAGPOORENSIS Lea. *Unio nagpoorensis LEA, Pr. Ac. N. Sci. Phila., III, 1859, p. 331; * Jl. Ac. N. Sci. Phila., IV, 1860, p. 270, pl. Xv, fig. 150; “Obs., VII, 1860, p. 88, pl. xLy, fig. 150.—* BLANFORD, J]. As. Soc. Beng., XXXV, 1866, p. 143. *Margaron (Unio) nagpoorensis LEA, Syn., 1870, p. 38. *Unio corrugatus Miill. var. nagpoorensis HANLEY and THEOBALD, Conch. Tas 1876, p. 21.—P£TEL, Conch. Sam., 1890, p. 149. India; Burma.? +PARREYSIA WYNEGUNGZENSIS Lea. * Unio wynegungensis LHa,? Pr. Ac. N. Sci. Phila., III, 1859, p. 331; *JI. Ac. N. Sci. Phila., IV, 1860, p. 271. pl. xiv, fig. 151; “Obs., VII, 1860, p. 89, pl. xLv, fig. 151.—* BLANFORD, Jl. As. Soe. Benen XXXV, 1866, p. 143.—* SOWERBY, Conch. Icon., XVI, 1868, pl. LX vil, p. 339.—* P&TEeL, Conch. Sam., IIT, 1890, p. 172. * Margaron (Unio) wynegungensis LEA, Syn., 1870, p. 50. Wynegunga River, Bengal. tPARREYSIA FAVIDENS Benson. *% Mya spuria Wood, Ind. Test., 1825, p.12, pl. 11, fig. 35a. *Unio favidens BENSON,’ Ann. Aur Mag., X, 1862, p. 188; *Jl. As. Soc. Beng., XXXV, 1867, p. 188.—*HaniEy and THEOBALD, Conch. Ind., 1876, p. 6, pl. x1, fig. 1.—* ReEvE, Conch. Icon., XVI, 1865, p].xxv1, fig. 131.—* PareEt, Conch. Sam., ILI, 1890, p. 152. * Margaron (Unio) favidens LEA, Syn., 1870, p. 38. * Unio flavidens P®TEL, Conch. Sam., ILI, 1890, p. 152. *Unio trirostris MUSGRAVE, Hanley Phot. Conch., 1863, pl. 11, fig. 9.—* HANLEY and THEOBALD,* Conch. Ind., 1876, p. 6, pl. x1, fig. 6.—* Pa TEL, Conch. Sain., III, 1890, p. 170. 1T think this is corrugatus and not the wynegungensis of Lea. 2Heavier, more elongated .and pointed behind than corrugata, yet probably only a variety of it. 3 Several varieties, marcens, trigona, deltw, chrysis, viridula, and densa are given by Benson, which hardly seem to me to be worth mentioning. 4This = U. tripartitus of Lea, with a darker epidermis and a more pronounced basal swelling. There is every variation in the coloring and swelling. NO, 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 843 t * Unio tripartitus Lma, Pr. Ac. N. Sci. Phila., VII, 1863, p. 190; *Jl. Ac. N. Sei. Phila., VI, 1866, p. 57, pl. x1x, fig.55; “~Obs., XI, 1867, p. 61, pl. XIX, fig. 55. *Margaron (Unio) tripartitus Lea, Syn., 1870, p. 35.! *Unio favidens var. marcens BENSON, Ann. and Mag,, X, 1862, p. 188. *“Unio marcens HANLEY and THEOBALD, Conch. Ind., 1876, p. 19, pl. xu, figs. 4-6.—* PmTet, Conch. Sam., ITI, 1890, p. 158. *Unio smaragdites BENSON, Ann. and Mag., X, 1862, p. 190.—* BLanrorp, JI. As. Soc. Beng., XX XV, 1866, p. 147.—* HANLEy and THEOBALD, Conch. Ind., 1876, p.5, pl. x, fig. 5.—* P&TEL, Conch. Sam., IIT, 1890, p. 167. PARREYSIA FAVIDENS var. PINAX Benson. * Unio pinax BENSON, Ann. and Mag., 1862, p. 192; “Jl. As. Soc. Beng., XXXV, 1866, p. 144. *Unio favidens var. pinaz HANLEY and THEOBALD, Conch. Ind., 1876, p.6, pl. Xx, fig. 2,—* PmreL, Conch. Sam., ITI, 1890, p. 152. PARREYSIA FAVIDENS var. PLAGIOSOMA Benson. *Unio plagiosoma BENSON, Ann. and Mag., X, 1862, p. 191; “Jl. As. Soc. Beng., XXXV, 1866, p. 144. *Unio favidens var. plagiosoma HANLEY and THEOBALD, Conch. Ind., 1876, p. 6, pl. x1, fig. 3.—* Pa TEL, Conch. Sam., III, 1890, p. 152. _ India. : + PARREYSIA BHAMOENSIS Theobald. * Unio bhamoensis THEOBALD, JI. As. Soc. Beng., XLII, 1874, Pt. 2, p. 207, pl. xvi, fig. 1.—* ? HANLEY and THEOBALD, Conch. Ind., 1876, p. 62, pl. CLV, fig. 2.— * P£TEL, Conch. Sam., III, 1890, p. 146. j *+ Unio mandelayensis THEOBALD, Jl. As. Soc. Beng., XLU, 1874, p. 208, pl. xvi, fig. 2.—* Hantey and THEOBALD, Conch. Ind., 1876, p. 62, pl. cLtv. fig. 4.— * Paw TEL, Conch. Sam., III, 1890, p. 158. Burma. +PARREYSIA FEDDENI Theobald. *Unio feddeni THEOBALD, Jl. As. Soc. Beng., XLII, 1874, p. 208, pl. xvu, fig. 3.? Penugunga River, Central India. +PARREYSIA TAVOYENSIS Gould. *Unio tavoyensis GOULD, Pr. Bost. Soc. N. Hist., I, 1843, p. 140.—* CaTLow and REEVE, Conch. Nom., 1845, p. 64.—*KusrEr, Conch. Cab. Unio, 1856, p. 166, pl. xiv, fig. 2.—* GouLp, Otia Conch., 1862, p. 1£0.—* Rrrve, Conch. Icon., XVI., 1864, pl. xu, fig. 49.3—* BLaNrorD, Jl. As. Soc. Beng., XXXV, 1866, p. 148..-* HanLEY and THEOBALD, Conch. Ind., 1876, p. 62, pl. CLIV, figs. 6, 7.— *PeTEL, Conch. Sam., III, 1890, p. 169. *Margaron (Unio) tavoyensis LEA, Syn., 1870, p. 31. *Unio savoyensis P®TEL, Conch. Sam., III, 1890, p. 166. *Unio parma BENSON, Sowerby Conch. Icon., XVI, 1868, pl. xcv, fig. 514.— * HANLEY and THEOBALD, Conch. Ind., 1876, p. 61, pl. cLiy, fig. 1.—* P&TEL, Conch. Sam., III, 1890, p. 162. 1Lea claims that his species has triple laterals in the left valve. Specimens of favidens have the same character, and there is much variation in this particular. 2A young specimen in the U. S. National Museum collection from Morelet’s collec- tion is a good deal like P. favidens. 3Gould did not figure this, but Reeve’s figure agrees well with the types. 844 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII, +PARREYSIA TAVOYENSIS var. TRIEMBOLUS Benson. * Unio triembolus BENSON, Jl. As. Soc. Beng., XX XY, 1855, p. 144; *Ann. and Mag., X, 1862, p. 190.—* Hantey and THEOBALD, Conch. Ind., 1876, p. 43, pl. cv, fig, 2.—* Pa TEL, Conch. Sam., III, 1890, p. 170. *+ Unio houngdaranicus TAPPERONE-CANEFRI, Ann. Mus. Civ., VII, 1889, p. 341. Burma; India. tPARREYSIA VULCANA Hanley. *Unio vuleanus HANLEY, Pr. Zool. Soc. Lond., 1875, p. 606.—* HANLEY and THEO- BALD, Conch. Ind., 1876, p. 62, pl. CLY, fig. 3.—* Pa TEL, Conch. Sam., III, 1890, 105 LUIS Burma; Pegu. +PARREYSIA FE Tapperone-Canefri. * Unio few TAPPERONE-CANEFRI, Ann. Mus. Civ. Gen., 2d ser., VII, 1889, p. 340.! Meetan River, Burma. +PARREYSIA RAJAHENSIS Lea. (* Unio rajahensis La, Pr. Am. Phil. Soc., II, 1841, p. 30; *Tr. Am. Phil. Soc., VIII, 1842, p. 239, pl. xxi11, fig. 53; *Obs., III, 1842, p. 77, pl. xx11, fig.53.—* H. and A. ApAMs, Gen. Rec. Moll., II, 1857, p. 495.—*CHENU, Ill. Conch.. 1858, pl. XXVI, figs. 3, 3a, 3b.—* PmreL, Conch. Sam., III, 1890, p. 165. (* Margaron (Unio) rajahensis Lea, Syn., 1852, p. 25; 1870, p. 38. ‘ * Unio indicus SOwERBY, Conch. Icon., XVI, 1866, pi. XL, fig. 222.—* HANLEY and THEOBALD, Conch. Ind., 1876, p. 43, pl. cv, fig. 1. , * Margaron (Unio) indicus LEA, Syn., 1870, p. 31. : India. (Group of Parreysia rugosa.) Shell rather solid, elliptical to subtrapezoidal; beaks full, with zig-zag- radial sculpture and fine corrugations and granules over the surface of the shell. +tPARREYSIA RUGOSA Gmelin. *Mya rugosa GMELIN, Syst. Nat., 13th ed., 1788, p. 83222.°—*Woop, Gen. Conch. I, 1815, p. 109.—*DILLWwyn, Cat. I, 1817, p.53.—~ Woop, Ind. Test., 1825, p. 12, pl. HI, fig. 38a; rev. ed., 1856, p. 16, pl. m1, fig. 33. i * Unio rugosus KUSTER, Conch. Cab. Unio, 1862, p. 290, pl. xcvu, fig. 5.—* BLAN- FORD, Jl. As. Soc. Beng., XX XV, 1867, p. 187.—*Pa&TEL, Conch. Sam., III, 1890, p. 166. Coromandel. 1Not figured. Shells in the U.S. National Museum from Fea show this to be a valid species. 2Gmelin refers to the Mya corrugata magna, etc., of Chemnitz, in the Conch. Cab., X, p. 376, pl. cLXX, fig. 1649. There is a shell in Lea’s collection from the Vellaur River, southeast India, which seems to be this species. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 845 +PARREYSIA CORBIS Hanley. *Unio corbis HANLEY, Biy. Shells, 1856, p. 386, pl. xx, fig. 43.'—*HANLEY and THEOBALD, Conch. Ind., 1876, p. 22, pl. XLV, fig. 10. *Margaron (Unio) corbis Lea, Syn., 1870, p. 50. Assam. +PARREYSIA BURMANUS Blanford. * Unio burmanus BLANFORD, Pr. Zool. Soc. Lond., 1869, p. 449. * Unio birmanus HANLEY and THEOBALD, Conch. Ind., 1876, p. 19, pl. xu, fig. 1.— *PmTEL, Conch. Sam., III, 1890, p. 146 Burma. +PARREYSIA SIKKIMENSIS Lea. *Unio sikkimensis LEA, Pr. Ac. N. Sci. Phila., III, 1859, p. 151; *Jl. Ac. N. Sci. Phila., IV, 1859, p. 251, pl. XxxIXx, fig. 131; *Obs., VII, 1860, p. 69, pl. XxxxIx, fig. 131.—* SowERBy, Conch. Icon., XVI, 1868, pl. LXxVI, fig. 400.—* HANLEY and THEOBALD, Conch. Ind., 1876, p. 6, pl. x1, fig. 4, p. 44, pl. cvu, figs. 6, 7.— *P#TEL, Conch. Sam., III, 1890, p. 167. *Margaron (Unio) sikkimensis LrA, Syn., 1870, p. 64. Sikkim, India. +PARREYSIA GOWHATTENENSIS Theobald. * Unio gowhattenensis THEOBALD, Jl. As. Soc. Beng., XLII, 1873, p. 208, pl. xvii, fig. 4,—*P.£TEL, Conch. Saim., III, 1890, p. 154. Gowhatti, in Assam. PARREYSIA SIMPULARIS Heude. *Unio modestus HEUDE, ? Conch. Fluv. Nank., II, 1877, pl. x1v, fig. 29. * Unio simpularis HEUDE, Jl. de Conch., XX XII, 1884, p. 20.—*P&TEL, Conch. Sam., III, 1890, p. 167. China. PARREYSIA TRISULCATA Heude. *Unio trisulcatus HEUDE, Conch. Fluv. Nank., VIII, 1883, pl. Lv, fig. 108. China. (Group of Parreysia leopoldvillensis.) Shell rounded rhomboid, somewhat inflated, subsolid, with a rounded postridge; beaks full, the sculpture strongly and regularly zigzag-radial and extending well over the body of the shell; pseudocardinals heavy, subcompressed, crenate; anterior scars deep. 1 Credited to Benson manuscript. 2The name modestus has been used by authors for a Brazilian Unio, but I can not find that it was ever described. Later Kuster used the name for a Chilean species; hence Heude changed his first name to simpularis. It is quite probable that this species should be placed in a separate group. 846 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. PARREYSIA LEOPOLDVILLENSIS Putzeys. Unio leopoldvillensis PutTzHyYS, Proc. Verb. Soc. Ma). Belg., XX VII, 1898,p. XXviI, figs 12, 13.1 (Group of Parreysia bakeri.) Shell small, inflated, oval, rounded in front, bluntly pointed behind, inflated at or behind the central base; beaks full, high, sculptured with very strong, zigzag bars which extend part way over the disk and end rather suddenly, below which the shell is smooth; posterior ridge well developed, rounded; two compressed pseudocardinals and one lateral in the right valve, two pseudocardinals and two laterals in the left valve.’ ; . PARREYSIA BAKERI H. Adams. * Unio bakeri H. ADAMS, Pr. Zool. Soc. Lond., 1866, p. 376.—* P&TEL, Conch. Sam., III, 1890, p. 145.—* Smiru, Ann. and Mag., X, 1892, p. 126, pl. x11, fig. 11.—* VON Martens, Besch. Deuts. Ost-Af., 1897, p. 231, pl. vm, fig. 6. Lake Albert Nyanza, Central Africa. PARREYSIA STUHLMANNI von Martens. * Unio stuhlmanni VON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 251, pl. vu, fig. 13. Albert Edward Lake, Central Africa. NODULARIA HAUTTECOEURI Bourguignat. *Unio hautiecoeuri BOURGUIGNAT, Moll. Ny. Ouk., 1883, p. 5, figs. 1-3.—* von Martens, Besch. Deuts. Ost-Af., 1897, p. 232, pl. 1, fig. 23; vil, fig. 3. NODULARIA HAUTTECOEURI var. EDWARDSIANA Bourguignat. * Unio edwardsianus BOURGUIGNAT, Moll. Ny. Ouk., 1883, p. 12, figs. 7, 9. Lake Victoria Nyanza, Central Africa. PARREYSIA DUPONTI Rochebrune. * Reneus duponti ROCHEBRUNE, Bull. Soc. Zool. Fr., XL, 1881, p. 481. * Unio duponti ROCHEBRUNE, Bull. Soe. Philom., VI, 1882, p. 34.—* BOURGUIGNAT, Moll. Ny. Ouk., 1883, p. 8, figs. 10-12.—* PTEL, Conch. Sam., III, 1890, p. 151. * Unio bakeri VON MARTENS, Sitzber. Ges. Nat. Fr., 1879, p. 104. * Unio grandidieri BoURGUIGNAT, Moll. Ny. Ouk., 1883, p. 7, figs. 4-6.—* PATEL, Conch. Sam., ITI, 1890, p. 154.—*von Martens, Besch. Deuts. Ost-Af., 1874, p. 233. Lake Victoria Nyanza. PARREYSIA RUELLANI Bourguignat. *Unio ruellani BOURGUIGNAT, Moll. Ny. Ouk. 1883, p. 10, figs. 16-18.—* PaTEL, Conch. Sam., III, 1890, p. 166.—*von Martens, Besch. Deuts. Ost-Af., 1897, p. 235. Lake Victoria Nyanza. 1T have not seen this species, and I place it here with some doubt. 2T adopt this group with practically the same limits as given by von Martens in the Beschalte. Unfortunately I have never seen any species belonging to it. NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON, S47 PARREYSIA MULTICOLOR von Martens. * Unio multicolor VON MARTENS, Besch. Deuts, Ost-Af., 1897, p. 236, pi. vit. fig. 4. Lake Victoria Nyanza. PARREYSIA NGESIANUS von Martens. = ~ Unio ngesianus VON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 234, pl. vit. fig. Lake Albert Edward Nyanza. The following unfigured species are placed in this group bv von Martens: Unio billotianus CHARMES, Bull. Soc. Mal. Fr., II, 1885, p. 170, Bagamoyo, Central Africa. Unio euphymus CHARMES, Bull. Soc. Mal. Fr., II, 1885, p. 171, Bagamoyo. Unio dumesleanus CHARMES, Bull. Soc. Mal. Fr., II, 1885, p. 168, Bagamoyo. (Group of Parreysia fabagina.) Shell very small and solid, inflated, compressed on the sides, rhomboid, with a high, sharp posterior ridge and high beaks, having zigzag-radial sculpture sometimes extended over the disk, the posterior slope fur- nished with upeurved plications; pseudocardinals heavy, torn, one in the right valve, two in the left; muscular impressions circular, the anterior very deep. PARREYSIA FABAGINA Deshayes. *Unio fabagina DESHAYES, Nouy. Arch. de Mus., X, 1874, p. 128, pl. vu, figs. 4-6.— *PmTEL, Conch. Sam., III, 1899, p. 152.—*FiscuEr, Bull. Soc. d’Hist. Nat. Autun., 1891, p. 140. Mekong River, Cambodia. PARREYSIA BROTI Deshayes. * Unio broti DESHAYES, Nouv. Arch. de Mus., X, 1874, p. 129, pl. vi, figs. 1-3.— * CROSSE and FISCHER, J]. de Conch. XXV I, p. 823.—* P&TEL, Conch. Sam., III, 1890, p. 146. Mekong River, Cambodia. (Group of Parreysia nyassaensis. ) } Shell small, solid, inflated, triangular to rhomboid, the base straight or even a little arcuate, but sometimes having a slight fullness behind the central part; a high, well-defined posterior ridge ends at the post base and is sometimes slightly double; posterior slope abrupt; beaks high, with zigzag-radial sculpture, the bars approaching and often coalescing behind the center of the disk, the whole shell frequently corrugate sculptured; epidermis greenish, often slightly rayed; teeth solid, much like those of typical Parreysia; nacre white or bluish, sometimes microscopically, granularly radiate outside the palleal line; beak cavities not deep; anterior scars distinct. Animal unknown. 848 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. +PARREYSIA NYASSAENSIS Lea. * Unio nyassaensis LEA, Pr. Ac. N. Sci. Phila., VIII, 1864, p. 108; *Jl. Ac. N. Sci. Phila., VI, 1866, p. 33, pl. x11, fig. 832; ~ Obs., XI, 1867, p. 37, pl. x11, fig. 32.— * Smit, Pr. Zool. Soc. Lond., 1881, p. 298, pl. XxxIv, fig. 34. —* Pa TEL, Conch. Sam., III, 1890, p. 161.—*Ancry, Bull. Soc. Zool. Fr., VI, 1894, p. 225.— *Vvon MARTENS, Besch. Deuts. Ost-Af., 1897, p. 230. * Margaron (Unio) nyassaensis LEA, Syn., 1870, p. 30. * Unio nyasse SOWERBY, Conch. Icon., XVI, 1868, pl. XLI, figs. 224, 224a, 2240. * Unio nyassanus BOURGUIGNAT, Bull. Soc. Mal. Fr., VI, 1889, p. 38. * Unio hermosus BOURGUIGNAT, Bull. Soc. Mal. Fr., VI, 1889, p. 38.—* ANCEY, Bull. Soc. Zool. Fr., VII, 1894, p. 226.! Lake Nyassa, Central Africa. +PARREYSIA KIRKII Lea. * Unio kirkit Lea, Pr. Ac. N. Sci. Phila., VIII, 1864, p. 108; “Jl. Ac. N. Sci. Phila., VI, 1866, p. 32, pl. x11, fig. 30; *Obs., XI, 1867, p. 36, pl. x11, fig. 30.—* Bour- GUIGNAT, Bull. Soc. Mal. Fr., VI, 1889, p. 38.—* Ancry, Bull. Soc. Zool. Fr. VII, 1894, p. 225.—* von MaRTENS, Besch. Deuts. Ost-Af., 1897, p. 229. * Margaron (Unio) kirkit Lma, Syn., 1870, p. 30. Lake Nyassa. PARREYSIA UJIJIENSIS Bourguignat. * Unio nyassaensis var., SMITH, Pr. Zool. Soc. Lond., 1881, p. 298, pl. Xxxrv, fig. 34.2 * Grandidieria wjijiensis BOURGUIGNAT, Bull. Soc. Mal. Fr., II, 1885, p. 7. Lake Tanganyika. tPARREYSIA AFERULA Lea. * Unio aferula Lea, Pr. Ac. N. Sci. Phila., VIII, 1864, p. 109. * Unio aferulus LEA, Jl. Ac. N. Sci. Phila., VI, 1866, p. 34, pl. xin, fig. 34; *Obs., XI, 1867, p. 38, pl. x111, fig. 34.—* BouRGUIGNaT, Bull. Soc. Mal. Fr., VI, 1889, p. 388.—*ANCEY, Bull. Soc. Zool. Fr., VII, 1894, p. 226. * Margaron (Unio) aferulus Lea, Syn., 1870, p. 30. Lake Nyassa. PARREYSIA MONCETI Bourguignat. *Unio monceti BOURGUIGNAT, Moll. Ny. Ouk., 1883, p. 15, figs. 13-15.—* von MarTENS, Besch. Deuts. Ost-Af., 1897, p. 228. Lake Victoria, Nyanza. '. A. Smith, in Pr. Zool. Soc. Lond., 1877, p. 719; 1893, p. 640, believes that Unio kirki Lea and aferulus Lea are but varieties of Unio nyassaensis, and that Unio hermosus Bourguignat is identical with it. It is possible that the three forms of Lea may blend together, but the types are so distinct that I do not feel justified in uniting them even as varieties one of another. 2There is some confusion about this shell. The form on pl. xxxiv, which Smith probably refers to in the text as fig. 34) is simply fig. 34 on the plate, and is, I think, a distinct species, which has received the name of wijiensis from Bourguignat. There is no fig. 34) on the plate. His 34a, which Smith calls var. tanganyicensis, is U. nyassaensis Lea. Bourguignat probably alluded to the fig. 34 when he bestowed his name, although he speaks of the var. tanganyicensis Smith. These must not be confounded with the original Unio tanganyicensis of Smith, which is a very different thing. , | No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 849 PARREYSIA HYPSIPRIMNUS von Martens. * Unio hypsiprimnus VON MARTENS, Besch. Deuts. Ost-Af., 1897, p. 230, pl. vu, ier Ist Lake Nyassa. (Group of Parreysia molleuri.) Shell subquadrate, solid, inflated, rounded in front, truncated behind, with high beaks, the sculpture of which was not observed, and a strong, sharp, curved posterior ridge; surface concentrically grooved; pseudo- cardinals thick, short, cut up with vertical grooves; laterals curved; nacre white. PARREYSIA MOLLEURI Morlet. *Unio molleuri MoRLET, J]. de Conch., XX XIX, 1891, p. 242, pl. vit, fig. 4. Valley of the Mekong River. Subgenus AURORA Simpson, 1900. (Type, Unio auroreus Heude.) Shell small, ovate, subinflated, pointed behind, rather solid, with high, small beaks and strong, corrugated sculpture, which extends over half the disk in somewhat lachrymous, zigzag ridges and nodules, the outer part of the disk apparently having one or more strong, concen- tric ridges, the posterior slope being radiately ridged and nodulous; epidermis fulvous, beautifully and delicately green radiated; pseudo- cardinals conical, truncate, striate; laterals lamellar; nacre orange.” PARREYSIA AUROREA Heude. * Unio auroreus HEUDE, Conch. Fluv. Nank., VIII, 1883, pl. nvr, fig. 106.-— *PmTEL, Conch. Sam., III, 1890, p. 145. ‘China. Subgenus PSEUDOBAPHIA Simpson, 1900. (Type, Unio biestanus Heude.) Shell large, oval, inflated, gaping in front and behind, rather solic, with full beaks, the beak sculpture not seen, posterior part distinctly biangular; ligament large; epidermis smooth, brownish, somewhat rayed, right valve with a large, irregular pseudocardinal in front of the beak, with a pit in front of it; behind it on the hinge are numerous denticles, and at some distance behind two very faint laterals; left valve with two large pseudocardinals, one behind the other, and two remote 1] am not positive as to the systematic position of this and the last two species. The figure of the latter is from a very badly eroded shell, and it is difficult to tell what its affinities are. : *Heude’s brief Latin description so poorly describes the peculiar species placed here that I can not be sure where it belongs, and that it should not have generic rank. I place it here provisionally. Proc. N. M. vol. xxii o4 850 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XX blurred laterals; two upper anterior muscle scars united, very deep; posterior scars united, the lower long and oblique; beak cavities very large, deep; nacre flesh colored, dull.’ Animal unknown. tPARREYSIA BIESIANA Heude. “Unio biesianus HeupE, Conch. Fluy. Nank., II, 1877, pl. xiv, fig. 30.—* Pa& TEL, Conch. Sam., III, 1890, p. 146. China. Subgenus ACUTICOSTA Simpson, 1900. (Type, Unio chinensis Lea.) Shell pointed behind, produced at the center of the base, inflated, solid, with a sharp, pinched-up, but vanishing posterior ridge, beaks full, the sculpture strong, zigzag radial; epidermis smooth, rayed; pseudo- cardinals somewhat compressed, vertically ridged, ragged; laterals well developed, strongly obliquely ridged and granular. t PARREYSIA CHINENSIS Lea. * Unio chinensis LEA, Pr. Ac. Nat. Sci. Phila., XII, 1868, p. 150; * Jl. Ac. Nat. Sci. Phila., VI, 1868, p. 325, pl. Li, fig. 188; *Obs., XII, 1869, p. 85, pl. Lil, fig. 138.—* PareL, Conch. Sam., III, 1890, p. 148. > Margaron ( Unio) chinensis LEA, Syn., 1870, p. 30. PARREYSIA CHINENSIS var. SQUAMMOSUS Heude. * Unio sinensis var. squammosus Heupr, Conch. Fluy. Nank., VIII, 1883, pl. LVIll, fig. 113. PARREYSIA CHINENSIS var. LAQVIS Heude. * Unio squammosus var. levis HEUDE, Conch. Fluy. Nank., VIII, 1883, pl. Lrx, fig. 116. China. PARREYSIA RETIARIA Heude. * Unio retiarius HrupE, Conch. Fluv. Nank., VIII, 1883, pl. Lv, fig. 107.— * PATEL, Conch. Sam., III, 1890, p. 165. China. Genus PTYCHORHYNCHUS Simpson, 1900. (Type, Unio pfisteri Heude.) Shell elongate, elliptical, round in front, pointed behind, the point being midway of the height of the shell, solid, slightly inflated, with a faint posterior ridge; beaks rather low, sculpture not seen; the pos- terior slope sculptured with strong, upeurved ridges, which sometimes extend slightly on to the disk, which is otherwise smooth and shining; left valve with two rather stumpy, roughened pseudocardinals and 1 or 2 'Heude says the beaks are corrugated. NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. S51 somewhat blurred granulous laterals; right valve with a single blunt pseudocardinal, the hinge line in front of it being excavated, and a curious blurred lateral which is sometimes slightly split up; beak cav- ities shallow; dorsal scars few; nacre whitish. Animal unknown. (Group of Ptychobranchus pfisteri.) Characters as in the genus. + PTCHORHYNCHUS PFISTERI Heude. * Unio pfisteri HEUDE, Jl. de Conck., XXII, 1874, p. 112; *~Conch. Fluv. Nank., I, 1875, pl.1, fig. 1.—* P@TEL, Conch. Sam., III, 1890, p. 163. PTYCHORHYNCHUS PFISTERI var. INSPIRATUS Heude. * Unio pfisteri var. inspiratus HEUDE, Conch. Fluy. Nank., II, 1877, pl. xiv, fig. 28.— *P#TEL, Conch. Sam., III, 1890, p. 155. Nankin River, China. +PTYCHORHYNCHUS MEDIASTINUS Heude.! * Unio mediastinus HeuprE, Conch. Fluy. Nank., VIII, 1883, pl. Uxi, fig. 123.— *P#TEL, Conch. Sam., III, 1890, p. 158. China. (Group of Ptychorhynchus apicellatus.) Shell subrhomboid, more or less biangulate behind. PTYCHORHYNCHUS APICELLATUS Heude. “Unio apicellatus HEUDE, Conch. Fluy. Nank., VIII, 1883, pl. ux111, fig. 126. China. PTYCHORHYNCHUS SCHOMBURGIANUS Heude. *Unio schomburgianus HEUDE, Jl. de Conch., XL, p. 314; * Conch. Fluy. Nank., IX, 1885, pl. Lx xu, fig. 189.—* Pax TEL, Conch. Sam., III, 1890, p. 167. Isle of Hainan, China. PTYCHORHYNCHUS INCERTUS Simpson. *Unio compressus HEUDE,? Conch. Fluy. Nank., III, 1877, pl. xxiv, fig. 52.— * PHTEL, Conch. Sam., III, 1890, p. 148. ~Unio murinus HEUDE, Conch. Fluv. Nank., VIII, 1883, pl. Lxi1, fig. 121. “Unio morinus PATEL, Conch. Sam., ITI, 1890, p. 160. China. Genus VIRGUS, Simpson, 1900. (Type, Unio beccarianus Tapperone Caneffi. ) Shell rather solid, elongated, inequilateral, compressed, rounded in front, nearly straight below, the dorsal line as far back as the hinder ' Probably oaly a variety of P. pfisteri. 2The name compressus has been twice used previously for a Unio. I change it here to incertus. 852 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXIL. end of the ligament parallel with the base, behind the ligament the shell is obliquely truncate, the truncation somewhat upeurved, the shell ending in a rounded point at the posterior base; posterior ridge elevated, rounded, with sculpture radiating from it above and below; beaks rather low, radially ridged; pseudocardinals small, generally two in each valve; laterals rather short, club-shaped, one in the right and two in the left valve. Animal unknown. (Group of Virgus beccarianus. Shell having the posterior ridge high and rounded, outlined on each side by a sulcus, the radiations from this ridge rather fine; surfaze concentrically sculptured. VIRGUS BECCARIANUS Tapperone Canefri. * Unio beccarianus TAPPERONE CANEFRI, Ann. Mus. Genoy., XIX, 1883, p. 291, pl. XI, fig. 2.—* P#TEL, Conch. Saim., III, 1890, p. 145. Fly River, New Guinea. (Group of Virgus mattiroli.) Posterior ridge full, rounded, not outlined by sulci, covered with very strong corrugated ridges which curve outward each way from the center, the remainder of the shell smooth. VIRGUS MATTIROLI Tapperone Canefri. * Unio mattiroli TAPPERONE CANEFRI, Ann. Mus. Genoy., XIX, 1883, p. 292, pl. XI, fig. 1.—*P#®TEL, Conch. Sam., III, 1890, p. 158. Fly River, New Guinea. (Group of Virgus misoolensis.) Posterior ridge merely rounded, with radiating folds scattered over the shell, pseudocardinals two in the left valve and one in the right. VIRGUS MISOOLENSIS Schepman. *Unio misoolensis SCHEPMAN, Notes from Leyd. Mus., XVIII, 1896, p. 259, fig.— * DROUET, Jl. de Conch., XLV, 1897, p. 125. Misool, Borneo. Genus CTENODESMA Simpson, 1900. (Type, Unio borneensis Issel. ) Shell subtrapezoid to long elliptical, rather thin, compressed, with a scarcely developed posterior ridge and low beaks whose sculpture is densely zigzag radial, becoming finely corrugated or nodulous on the disk and extending over most of the shell; the disk concentrically striate or sulcate at its outer edge; pseudocardinals one to two in each valve, very diverse in form, but showing a tendency to break up into No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 853 denticles; one lateral and sometimes a faint secondary one in the left valve and two in the right; dorsal scars few, diversified in form, and variously disposed in the shallow beak cavities; anterior muscle scars united; nacre whitish. Animal unknown. + CTENODESMA BORNEENSIS Issel. *Unio plicatulus Lea,! Pr. Ac. Nat. Sci. Phila., III, 1859, p. 152; Jl. Ac. Nat. Sci. Phila., IV, 1860, p. 247, pl. xxxvit, fig. 126; ~Obs., VII, 1860, p. 65, pl. XXXVH, fig. 126.—* REEVE, Conch. Icon., XVI, 1865, pl. xxu, fig. 102.— * P#TEL, Conch. Sam., II, 1890, p. 163. *Margaron (Unio) plicatulus LEA, Syn., 1870, p. 31. *Unio borneensis ISSEL, Moll. Borneo, 1874, p. 1138. * Unio penisatus FISCHER and CROSSE,” Miss. Sci., Pt. 7, II, 1894, p. 599. Borneo. +CTENODESMA GUPPYI Smith. *Unio guppyit SMITH, Pr. Zool. Soc. Lond., 1885, p. 608, pl. xxxvuj, figs. 88a, 88).—* P#TEL, Conch. Sam., IT], 1890, p. 154. Shortland Island; Solomon Islands. Genus RECTIDENS Simpson, 1900. (Type, Unio prolongatus Drouet. ) Shell elongated, with an angle at the anterior dorsal part, pointed and slightly biangulate behind, moderately solid, with two or three posterior ridges, the lower the higher; beaks full, sculpture not observed but probably zigzag radial; the posterior slope, and often part of the disk, covered with faint, granular radiating sculpture; epidermis smooth, olive; one compressed, short, recurved pseudocardinal in the left valve under the beak, with a very long one in front of it, and two laterals; two compressed pseudocardinals in the right valve, and a single lateral; all the teeth straight or nearly so; anterior muscle scars separate; beak cavities rather shallow; only one or two dorsal sears in each valve; nacre white or reddish. Animal unknown. tRECTIDENS SUMATRENSIS Dunker. *Unio sumatrensis DUNKER, Zeits. fiir Mal., IX, 1852, p. 52.—* PFEIFFER, Nov. Conch., II, 1866, p. 152, pl. Xx xIx, figs. 10-12.—* voN MaRTENsS, Mal. B1., XIV, 1866, p. 15.-—* Pa TEL, Conch. Sam., III, 1890, p. 169. Lake Dana I nar, Sumatra. 1Lea’s name was preoccupied by Kuster, or Charpentier, for a Mexican species in 1856. The name proposed by Issel in 1874 will have to be used. 2Proposed by Fischer and Crosse, because Lea’s name plicatulus was preoccupied by Kuster. 854 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL +RECTIDENS LINGULATUS Drouet and Chaper. *Unio lingulatus DROUET and CHAPER, Mém. Soc. Zool. Fr., V, 1892, p. 148, pl. v, figs. 7-9.—* DROUET, Jl. de Conch, XLI, 1893, p. 42. Borneo. +RECTIDENS PROLONGATUS Drouet. *Unio prolongatus DROUET, Rey. Biol. Nord Fr., VI, 1894, p. 216; * Jl. de Conch., XLIII, 1895, p. 36.—* KoBeEtr, Abh. Senck. Nat. Ges., XXIV, 1897, p. 87, pl. x1, figs. 1, 2. Borneo. RECTIDENS PERAKENSIS de Morgan. *Unio perakensis DE MorGAN, Bull. Soc. Zool. Fr., X, 1885, p. 424, pl. rx, figs. 3, 4.—* PmTeL, Conch. Sam., III, 1890, p. 163. Perak. RECTIDENS PAHANGENSIS Smith. * Unio pahangensis E. A. SmirH, Pr. Mal. Soc. Lond., III, 1899, p. 315, fig. Pahang River, Malay Peninsula. Exceedingly near to O. lingulatus Drouet and Chaper. Genus LAMELLIDENS Simpson, 1900. (Type, Unio marginalis Lamarck.) Shell elongate, elliptical, pointed behind, with a slight post-dorsal wing, a low, often biangulate posterior ridge, and generally two sharp, radiating lire above it; beaks with curved, radiating ridges which sometimes are slightly zigzag and often become almost concentric, but which fade out as they approach each other at the center of the disk; epidermis smooth, generally shining, brownish, often with concentric bands of lighter color, rayless or nearly so; left valve with two com- pressed pseudocardinals, the front one roughened, and two laterals; right valve with two parallel, lamellar pseudocardinals and one lateral; cavity of the beaks rather shallow; dorsal sears few, deep, distinct, scattered; anterior scars separate; nacre bluish white to straw. Animal unknown. Subgenus LAMELLEDENS Simpson, 1900. (Type, Unio marginalis Lamarck. ) Shell dark colored; teeth well developed. | LAMELLIDENS MARGINALIS Lamarck. “Die breite Mahler-Muschel aus Grénland, SCHROTER, Flussce., 1779, p. 181, pi. IX, foun *? Unio groenlandicus MOrcH, Am. Jl. Conch., IV, 1868, p. 38.! *? Unio testudinarius SPENGLER, Skriv. Selsk. Nat., III, 1793, p. 65.—* P#TEL, Conch. Sam., IIT, 1890, p. 169. ‘The name groenlandicus can not stand for this species, since Schréter did not use his appellation in anything but a descriptive sense. The species is found only in India, no Naiad being known from Greenland. NO, 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 855 — *? Unio truncatus SPENGLER, Skriv. Selsk. Nat., III, 1793, p. 65.—? Scur6 mr, Arch. Zool. Zoot. 1802, II, 2 Stiick, p. 107. *Unio marginalis LAMARCK, An. sans Vert., VI, 1819, p. 79..—*DESHAYES, Ene. Méth. II, 1827, p. 151, pl. ccxivut, fig. 1.—* HaNnLEy, Test. Moll., 1842, p. 206; * Biv. Shells, 1843, p. 206, pl. Xx, fig. 53. —* CarLow and REEVE, Conch. Nom., 1845, p. 61.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 491.—* Kustrr, Conch, Cab. Unio, 1861, p. 239, pl. Lxxx, fig. 4.—* SowrrRBy, Conch. Icon., XVI, 1867, pl. LIX, fig. 297.—* HANLEY and THEOBALD, Conch. Ind., 1876, p. 20, pl. XLII, fig. 2.—* Pa TrEeL, Conch. Sam., III, 1890, p. 158. * Margarita (Unio) marginalis Lra, Syn., 1836, p. 37; 1838, p. 24, * Margaron (Unio) marginalis LEA, Syn., 1852, p. 38; 1870, p. 60. *Unio anodontina LAMARCK, An. sans Vert., VI, 1819, p. 80.—* DesHayEs, An. sans Vert., VI, 1835, p. 546; II, 1839, p. 671. *Unio anodontinus KustER, Conch. Cab. Unio, 1861, p. 240, pl. LXxx, fig. 15.— * PATEL, Conch. Sam., ILI, 1890, p. 144. ~+Symphynota bilineata LEA, Tr. Am. Phil. Soc., IV, 1831, p. 98, pl. x1, fig. 19; *Obs., I, 1834, p. 108, pl. x1, fig. 19. *Margarita (Unio) bilineatus LEA, Syn., 1836, p. 38; 1838, p. 25. *Unio bilineatus HANLEY, Test. Moll., 1842, p. 207; * Biv. Shells, 1843, p. 207, pl. XXI, fig. 30.—*CATLow and REEVE, Conch. Nom., 1845, p. 56.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 491.—* SowerRBy, Conch. Icon., XVI, 1868, pl. LXXx1, fig. 365. *Margaron (Unio) bilineatus LEA, Syn., 1852, p. 38; 1870, p. 61. *2? Unio evanescens MoussoN, Moll. Java, 1849, p. 91, pl. xvu, fig. 2. tLAMELLIDENS MARGINALIS var. OBESUS Hanley and Theobald. * Unio marginalis var. obesa HANLEY and THEOBALD, Conch. Ind., 1876, p. 20, pl. XLII, fig. 3. * ? Unio corrianus SOWERBY, Conch. Icon., XVI, 1868, pl. Lxxvu, fig. 401. tLAMELLIDENS MARGINALIS var. TRICOLOR Kuster. ~ Unio tricolor KusTER, Conch. Cab. Unio, 1856, p. 156, pl. xLv, fig. 1.—* JICKELI,. Faun. Moll. N. O. Af., 1874, p. 275.—* P&TEL, Conch. Sam., III, 1890, p. 170. * Unio marginalis var. tricolor HANLEY and THEOBALD, Conch. Ind., 1876, p. 20, pl. xu, fig. 5. ‘elie LAMELLIDENS MARGINALIS var. CANDAHARICUS Hanley and Theobald. * Unio marginalis var. candaharica HANLEY and THEOBALD, Conch. Ind., 1870, p. 20, pl. XL, fig. 4. tLAMELLIDENS MARGINALIS var. CYLINDRICUS Hanley and Theobald. * Unio marginalis var. cylindrica HANLEY and THEOBALD, Conch. Ind., 1876, p. 20, pl. xxiv, fig. 1. LAMELLIDENS MARGINALIS var. HANLEYI Simpson. * Unio marginalis var. corriana HANLEY and THEOBOLD, Conch. Ind., 1876, p. 20, pl. XLIv, fig. 4.2 India; Burma; Pegu; Ceylon; Canton River,China?. I believe that Mouswon’s U. evanescens is L. marginalis, but can it be from Java? 1T use Lamarck’s name for this species because the U. testudinarius and truncatus were only briefly and imperfectly described, and never figured, their habitats being given as Greenland. Lamarck refers to the figures in Enc. Méth., pl. 247, figs. 1, la, 1b, 1c, which very accurately represent the shell we know as Unio marginalis. 2 Not Lea’s corrianus at all, but very different. I change the name to hanleyt. 856 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. +LAMELLIDENS PULCHER Tapperone-Canefri. * Unio pulcher TAPPERONE-CANEFRI, Ann. Mus. Civ., VII, 1889, p. 350.! Houngdaran, Burma. LAMELLIDENS EXANTHEMATICUS Kuster. * Unio exanthematicus KusTER, Conch. Cab. Unio, 1861, p. 248, pl. LXxXx1, fig. 2,— *P#TEL, Conch. Sam., III, 1890, p. 152. East Indies. +LAMELLIDENS THWAITESII Lea. Unio thwaitesii LBA, Pr. Ac. N. Sci. Phila., III, 1859, p.152; * Jl. Ac. N. Sei. Phila., IV, 1860, p. 246, pl. xxxvul, fig. 125; *Obs., VII, 1860, p. 64, pl. xxxvil, fig. 125.—* REEVE, Conch. Icon., XVI, 1865, pl. xxi, fig. 105.—* HANLEY and THEOBALD, Conch. Ind., 1876, p. 20, pl. xii, fig. 1.—* Pa TEL, Conch. Sam., III, 1890, p. 169. x * Margaron (Unio) thivaitesti Lea, Syn., 1870, p. 41. * Unio consobrinus HANLEY and THEOBALD, Conch. Ind., 1876, p. 19, pl. xl, fig. 7. Ceylon. + LAMELLIDENS CONSOBRINUS Lea. *Unio consobrinus Lea,? Pr. Ac. N. Sci. Phila., III, 1859, p. 331; * Jl. Ac. N. Sci, Phila., 1860, p. 272, pl. xLy, fig. 152; *Obs., VII, 1860, p. 90, pl. xLv, fig. 152,— * P#TEL, Conch. Sam., III, 1890, p. 148. * Margaron (Unio) consobrinus Lua, Syn., 1870, p. 46. *Unio corbeti DESCHAMPS, Bull. Soc. Zool. Fr., X VII, 1892, p. 68, fig.3 China; India; Ceylon. +LAMELLIDENS LAMELLATUS Lea. *Unio lamellatus LEA, Tr. Am. Phil. Soc., VI, 1838, p. 19, pl. v1, fig. 16; *Obs., II, 1838, p. 19, pl. v1, fig. 16.—* TROSCHEL, Arch. fiir. Nat., V, 1839, Pt. 2, p. 234.— “HANLEY, Test. Moll., 1842, p. 194; Biv. Shells, 1843, p. 194, pl. x x1, fig. 49.— *CaTLow and REEVE, Conch. Nom., 1845, p.60.—*H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 494.—* CuEnu, Il]. Conch., 1858, pl. xx11, figs. 3, 3a, 3b.—* SOWERBY, Conch. Icon., XVI, 1866, pl. Lu, fig. 272.—* HANLEY and THEOBALD, Conch. Ind., 1876, p. 21, pl. XLIv, fig. 7.—* P@TEL, Conch. Sam., III, 1890, p. 126. * Margarita (Unio) lamellatus LEA, Syn., 1836, p. 26; 1888, p. 20. * Margaron (Unio) lamellatus Lea, Syn., 1852, p. 29; 1870, p. 46. * + Unio layardit Lua, Pr. Ac. N. Sci. Phila., III, 1859, p. 153; *J1. Ac. N. Sci. Phila., IV, 1860, p. 243, pl. XXXVI, fig. 122; *Obs., VII, 1860, p. 61, pl. xx xvVJ, fig. 122.— * REEVE, Conch. Icon., XVI, 1865, pl. x xu, fig. 111.—* HaNLEY and THEO- BALD, Conch. Ind., 1876, p. 19, pl. x11, fig. 1.—* P#TEL, Conch. Sam., III, 1890, p. 157. * Margaron ( Unio) layardii Lua, Syn., 1870, p. 46. India; Ceylon. ‘Only a Latin description is given. We have two shells in the U.S. National Museum from the type lot, and it is, perhaps, a valid species, close to marginalis. 2 Possibly only a variety of thwaitesii. Unio mainwaringi Nevill. Shells have been several times received bearing this name, which seem to me to be only consobrinus. I can not find that Nevill ever described the species. ee Te No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 857 LAMELLIDENS SCUTUM Sowerby. * Unio scutum SOWERBY, Conch. Icon., XVI, 1868, pl. xcry, fig. 510..—* HanLry and THEOBALD, Conch. Ind., 1876, p. 22, pl. xvi, fig. 1.—* PaTrn, Conch. Sam., III, 1890, p. 167. Tenasserim. +LAMELLIDENS CORRIANUS Lea. * Unio corrianus LEA, Tr. Am. Phil. Soc., VI, 1834, p. 65, pl. 1x, fig. 25; * Obs., I, 1834, p. 177, pl. 1x, fig. 25.—* Haney, Test. Moll., 1842, p. 207; * Biv. Shells, 1843, p. 207, pl. xx, fig. 60.—* CatLow and REEVE, Conch. Nom., 1845, p. 57.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 491.—* Parr, Conch. Sam., III, 1890, p. 149. * Margarita (Unio) corrianus LEA, Syn., 1836, p. 38; 1838, p. 25. * Margaron (Unio) corrianus LEA, Syn., 1852, p. 38; 1870, p. 61. India; Burma; Pegu. +LAMELLIDENS GENEROSUS Gould. * Unio generosus GOULD, Pr. Bost. 8S. N. Hist., II, 1847, p. 220; * Otia Conch., 1862, p. 210.—* HaNLEY and THEOBALD, Conch. Ind., 1876, p. 22, pl. XLVI, fig. 4.—* PmtTeEL, Conch. Sam., III, 1890, p. 153. * Margaron (Unio) generosus LEA, Syn., 1870, p. 29. *? Unio lamellatus SOWERBY, Conch. Icon., XVI, 1868, pl. xcrv, fig. 511. Burma; Pegu. +LAMELLIDENS CANEFRIANUS Simpson. *Unio protensus TAPPERONE-CANEFRI,”? Am. Mus. Civ. Gen., VII, 1889, p. 349. Prome, Lower Burma. ;+;LAMELLIDENS JENKINSIANUS Benson.3 *Unio jenkinsonianus BENSON, Ann. and Mag., X, 1862, p. 185.—* HANLEY and THEOBALD, Conch. Ind., 1876, p. 19, pl. x11, fig. 4.—* Pa1EL, Conch. Sam., III, 1890, p. 155. Assan. Subgenus SPATHOPSIS, Simpson. 1900. (Type, Anodonta guillaini Recluz.) Shell long, elliptical, compressed, beaks rather low, said to bear con- centrically roughened ridges, with slight plications in front and behind them; posterior ridge not developed; surface shining, smooth; hinge line narrow, with faint, greatly elongated pseudocardinals and iaterals; 1 Credited by Sowerby to Benson. 2Preoccupied by Lea in 1865 for a North Carolina Unio, hence the name is changed as above. >This is figured by Hanley and Theobald as a heavy sbell, shaped much like an old Unio buckleyi, and quite different from the other species of the genus. But there is in the U.S. National Museum collection a specimen which is much thinner than the figured shell, and more nearly approaching marginalis in form. 858° PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. escutcheon deep, triangular; beak cavities shallow; anterior muscle scars elongated; posterior faint; iridescent behind.! Animal unknown. LAMELLIDENS GUILLAINI Recluz. * Inodonta guillaini RECLUZ, Jl. de Conch,, I, 1850, p.55; * Zeits. fur Mal., VII, 1851, p. 140.—* Cross, J]. de Conch., XX XI, 1883, p. 222, pl. 1x, fig. 4.—* PATEL, Conch. Sam., ITI, 1890, p. 180. Brava, northeast Africa, in the Somali country. Genus TRAPEZOIDEUS Simpson. (Type, Unio foliacea Gould.) Shell trapezoid, much compressed, with a low posterior ridge, and but slightly raised though pointed beaks, which seem to be sculptured with irregularly radial ridges arranged in two imperfect chevron-shaped loops; surface concentrically sculptured, often having irregular radial ridges on the posterior slope; epidermis yellowish-green or brownish, with two or more green rays above the posterior ridge; teeth com- pressed; two pseudocardinals in the left valve, one under the beak, the other in front, often not well separated, and two laterals; right valve with two pseudocardinals and one lateral; pseudocardinals all irregu- lar, often pitted and peculiarly dentellate; laterals granular, showing traces of vertical striation; cavity of the beaks rather deep, compressed ; muscle sears shallow, anterior scars separate; nacre soft, creamy, yel- lowish in the beak cavities. Animal unknown. + TRAPEZOIDEUS FOLIACEUS Gould. * Unio foliacea GOULD, Pr. Bost. Soc. N. Hist., I, 1843, p. 141; * Otia Conch., 1862, 1a Bil * Unio foliaceus CATLOW and REEVE, Conck. Nom., 1845, p.59.—* H.and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 492.—* HANLEY and THEOBALD, Conch. Ind., 1876, p. 19, pl. xxi, fig. 3.—* ANDERSON, Yunnan Exp., 1877, p. 900, pl. LXxx, figs. 8-12.—* PaTEL, Conch. Sam., III, 1890, p. 153. * Margaron (Unio) foliaceus LEA, Syn., 1852, p. 39; 1870, p. 62. ~t Unio peguensis ANTHONY, Am. Jl. Conch., I, 1865, p. 351, pl. xxv, fig. 2.— * SOWERBY, Conch. Icon., XVI, 1868, pl. xcv, fig. 519.—* P& TEL, Conch. Sam., ITI, 1890, p. 162. *Margaron (Unio) peguensis LEA, Syn., 1870, p. 51. TRAPEZOIDEUS FOLIACEUS var. COMPTUS Deshayes and Jullien. ~ Unio comptus DESHAYES and JULLIEN, Nouv. Arch. de Mus., X, 1874, p. 126, pl. v1, figs. 3, 4. ~ Unio fragiles NEVILL, Jl. As. Soc. Beng., XLVI, 1877, p. 39.—* ANDERSON, Yunnan Exp., 1877, p. 400, pl. Lx xx, figs, 8-12. Burma; Cambodia. 'T hardly know where to place this, as the description is lacking in several essen- tial characters. It is probable that the beak sculpture is much like that of Lamelli- dens instead of being properly concentric, and it may be a subgenus of that group. NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 859 +TRAPEZOIDENS MISELLUS Morelet. * Unio misellus MORELET, Jl. de Conch., XIII, 1865, p.21; *Ser. Conch., IV, 1875, p. 341, pl. xiv, fig. 2.—* P&TEL, Conch. Sam., III, 1890, p. 159. *+ Unio siamensis LEA, Pr. Ac. N. Sci. Phila., X, 1866, p. 133; *J1. Ac. N. Sei. Phila., VI, 1868, p. 279, pl. xxxvin, fig. 93; *Obs., XII, 1869, p. 39, pl. xxxvutt, fig. 93. * Margaron (Unio) siamensis LEA, Syn., 1870, p.57. TRAPEZOIDEUS PALLEGOIXI Sowerby. * Anodon pallegoixt SOWERBY,! Conch. Icen., XVII, 1867. pl. xvi1, fig. 17. *Anodonta pallegoiri CLESssIN, Conch. Cab. Ano., 1876, p. 210, pl. LxIv, fig. 6.— *PHTEL, Conch. Sam., III, 1890, p. 183. Siam; Cambodia. TRAPEZOIDEUS PENINSULARIS Simpson. -* Unio sumatrensis SOWERBY,? Conch. Icon., XVI, 1865, pl. xxviu, fig. 142. Sumatra. TRAPEZOIDEUS EXOLESCENS Gould.’ *Unio exolescens GOULD, Pr. Bost. 8. N. Hist., I, 1848, p. 141.—*CaTLow and REEVE, Conch. Nom., i845, p. 59.—*H. and A. ADAms, Gen. Rec. Moll., IT, 1857, p. 493.—* HaANLEY and THEOBALD, Conch. Ind., 1876, p. 43, pl. cvu, fig. 5, —* PTE, Conch. Sam., III, 1890, p. 152. *Margaron (Unio) erolescens LEA, Syn., 1852, p. 32; 1870, p. 51. Tavoy, Burma. : TRAPEZOIDEUS THECA Benson. *Unio theca BENSON, Ann. and Mag., X, 1862, p. 186.—* HANLEY and THEOBALD, Conch. Ind., 1876, p. 6, pl. x1, fig. 5.—* PZ TEL, Conch. Sam., III, 1890, p. 169. Cane River, Bundelkhund, India. Genus ARCONATIA Conrad, 1865. (Type, Triquetra lanceolata Lea. ) * Arconaia CONRAD, Am. J1. Conch., I, 1865, p. 234. Shell greatly elongated, inflated, solid, twisted on its axis, sometimes - straight, but generally having the posterior end curved strongly to the right or left, with a decided posterior ridge on both sides of the shell, ending in a blunt point, with usually a small ridge above on the post Slope; beaks rather low, sculpture not seen, but probably zigzag radial; ' Sowerby says nothing about teeth in his shell, whichis from Siam. The teeth of Lea’s specimen of U. siamensis are scarcely developed, and a comparison of his shell with Sowerby’s figure convinces me that they are very nearly allied. Lea’s figure shows the shell biangulate behind, which is an error. 2This is not Lea’s swmatrensis, nor that of Dunker. I have therefore changed the name to peninsularis. I am not certain as to its relations. It is not U. comptus Deshayes and Jullien, as Fischer believes 3 Gould did not figure this, and I have not seen the type. Theshell figured as this by Hanley and Theobald in the Conchologia probably belongs here. 860 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. often a few nodulous or wavy ridges cross the body of the shell, which is irregularly suleate; epidermis rayless; two pseudocardinals in the right valve, the upper compressed, separated from the split-up lower one by a parallel-sidedpit, two in the left, and two heavy laterals; one lateral in the right and a vestige of one below it; laterals granu- lated and vertically striate; muscle scars deep, anterior small, the front and upper united, the hinder separate, posterior muscle scars long, oblique; beak cavities very shallow; dorsal scars numerous, placed just on the inner edge of the hinge; nacre white. The lobes of the man- tle are not united into siphons, but separated throughout, with only a feeble commissure separating the anal and branchial openings. (Group of Arconaia lanceolata.) Shell with an anterior wing. +ARCONAIA LANCEOLATA Lea. * Triquetra lanceolata Lea, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 79. * Hyria lanceolata Lua, Pr. Ac. N. Sci. Phila., 1856, p. 300. * Arconaia lanceolata CONRAD, Am. Jl. Conch., I, 1865, p. 234. * Triquetra contorta LEA,! Pr. Ac. N. Sei. Phila., VIII, 1856, p. 300; *~Obs., VI, 1857, p. 39, pl. xxx, fig. 33; *Jl. Ac. N. Sci. Phila., III, 1858, p. 319, pl. xxx1n, fig. 33. *Hyria contorta SowERBY, Conch. Icon., XVII, 1869, pl. 1, figs.2.a, 2b.—* Pa& TEL, Conch. Sam., III, 1890, p. 189. *Margaron (Triquetra) contorta Lra, Syn., 1870, p. 26. * Unio contortus HEupE, Conch. Fluy. Nank., II, 1877, pl. xv. fig. 31. China. +ARCONAIA MUTICA Heude *Unio contortus var. muticus HeuDE, Conch. Fluy. Nank., II, 1877, pl. xv, fig. 32. China. (Group of Arconaia conjungens.) Shell moderately solid, slightly twisted and bent, rounded in front; pseudocardinals not so much torn asin the lanceolata group; not winged in front. ARCONAIA CONJUNGENS Heude. * Unio contortus var. conjungens HEuDE, Conch. Fluy. Nank., II, 1877, pl. xv, fig. 33. China. Genus PSEUDAVICULA Simpson, 1900. (Type, Unio johnstoni Smith. ) Shell rather solid, inflated, with a well-developed anterior and pos- terior dorsal wing; dorsal line strongly incurved; beaks full, not high; a ' The specific name was changed to contorta by Lea, because he thought his earlier name, lanceolata, was less appropriate. eae See Ee ene ae See ae - hee it NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. S61 high, down-curved posterior ridge runs to the posterior basal point, and between this point and the posterior point of the wing the outline is deeply incurved; base and lower part of anterior end rounded; surface slightly sculptured with concentric ridges; beak sculpture probably zigzag rayed; anterior tooth of left valve elongate, slightly corru- gated, that of the right double; laterals in left valve double, single in the right, straight, elongated, thin, and prominent; nacre, rose tinted. Animal unknown. PSEUDAVICULA JOHNSTONI Smith. Unio (metaptera) johnstoni SmiruH, Pr. Zool. Soc. Lond., 1893, p. 640, pl. LIx, figs. 18-20.! Lake Mweru, British Central Africa. Genus ARCIDOPSIS Simpson, 1900. (Type, Unio footet Theobald.) Shell inequilateral, elongated, with dorsal and ventral lines nearly straight and parallel; anterior end strongly and obliquely truncated from the beaks to the anterior base, and ending in a rather sharp but rounded point below; posterior end obliquely truncated above, rounded below; posterior ridge full, rounded; the shell in front and below rather compressed; surface concentrically and radially ridged; pseudocardi- nals strong, two in the right valve, one in the left, and supported by a strong, cardinal rib; muscle sears well impressed; parallel line dis- tinct. Animal unknown.’ ARCIDOPSIS FOOTEI Theobald. * Unio footei THEOBALD, J]. As. Soc. Beng., XLV, 1876, p. 187, pl. x1v, figs, 9, 9a. Kistna River, India. The following are indeterminate Oriental Unionide: Unio acrorrhynchus VON MARTENS, 8. B. Nat Fr., 1894, p. 214. Korea. Unio alfierianus BOURGUIGNAT, Voy. Choa, 1885, p. 48. Choa, Central Africa. Unio antiniloticus BOURGUIGNAT, Bull. Soe. Zool. Fr., XI, 1880, p. 482, pl. xu, fig. 5. High Senegal. Unio ascia HANLEY, Biy. Shells, 1856, p. 385. Unio bridouxi BOURGUIGNAT, Un. & Ir. Tan., 1886, p. 138. Lake Tanganyika. Unio cyamus PHiLipPl, Zeits fiir Mal., VIII, 1852, p. 125. 8S. Africa. Unio diespiter MABILLE, Bull. Soc. Mal. Fr., IV, 1887, p. 162. Tonkin. Unio dolichorhynchus TAPPERONE CANEFRI, Ann. Mus. Civ. Gen., 1889, p. 348. Mercato de Mandelay. 1A remarkable Naiad, closely imitating some of the South American Prisodons in general appearance, to which it may be nearly allied. 2 Unfortunately Theobald’s Latin description of Unio footei is not at all complete. No laterals are mentioned, and he says nothing of the color of the epidermis or of thenacre. The beaks were too much worn in his specimens to give any characters. The shell resembles some of the Arcas of the Barbatia group, and may not belong to the Unionidae at all. 862 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXL Unio forscali PARREYSS. Where described? Egypt. | Unio gianelli TAPPERONE CANEFRI, Ann. Mus. Civ. Gen., 1889, p. 353. Mercato de Mandelay. Unio gibbus SPENGLER, Skriv. Selsk. Nat., III, 1793, p. 64. Tranquebar. Unio gladiator ANCEY, Le Nat., III, 1881, p. 468. Tonkin. Unio gottschei VON MARTENS, 8. B. Nat. Fr., 1894, p.215. Korea. Unio grantianus BouRGUIGNAT, Moll. Ny. Ouk., 1883, p.14. Lake Oukerewe, Central Africa, Unio guillemeti BOURGUIGNAT, Un. & Ir. Tan., 1886, p.15. Lake Tanganyika, Unio hagnei STRUBELL, Nach. Mal. Ges., 1897, p. 10. Sumatra. Unio hamyanus BOURGUIGNAT, Voy. Choa., 1885, p.42. Central Ethiopia. Unio idgi BoURGUIGNAT Moll. Terr. et Fluy. Choa, 1885, p. 39. Choa, Africa. Unio ilqui SOLEILET, Voy. Choa, 1885, p. 40. Central Ethiopia. Unio inequalis ROCHEBRUNE, Bull. Soc. Philom., 1882, p. 44. Mekong. Unio jaculus ROCHEBRUNE, Bull. Soc. Philom., 1882, p.44. Mekong. Unio josseti BOURGUIGNAT, Un. & Ir. Tan., 1886, p.19. Lake Tanganyika. Unio jouberti BoURGUIGNAT, Un. & Ir. Tan., 1886, p.8. Lake Tanganyika. Unio lavigerinus BOURGUIGNAT, Un. & Ir. Tan., 1886, p. 14. Lake Tanganyika. Unio ligula Mousson, L. & 8. W. Moll. Java, 1849, p.94. Java. Unio longitudinatus ANTON, Verz der Conch. 18389, p.? Diplodon ludovicianum ROCHEBRUNE, Bull. Soc. Phil., 1882, p.43. Mekong. Unio madagascariensis SGANZIN, Mem. Soc. Hist. Strab., 1846, p. 8. Mahoupa River, Madagascar. No figure. Unio menardi BOURGUIGNAT, Un. & Ir. Tan., 1886, p.20. Lake Tanganyika. Unio meneliki SOLILLET, Voy. Choa, 1885, p.41. Central Ethiopia. Unio moineti BOURGUIGNAT, Un. & Iv. Tan., 1886, p.11. Lake Tanganyika. Unio palembangensis STRUBELL, Nach. Mal. Ges., i887, p.10. Sumatra. Dysnomia pavonina ROCHEBRUNE, Bull. Soc. Phil., 1882, p.48. Cochin China. Unio pliculosus VON MARTENS, 8. B. Nat. Fr., 1894, p.216. Korea. Unio schweinfurthi VON MARTENS, 8S. B. Nat. Fr., 1886, p.127. Egypt. Unio sitifensis MORELET, J]. de Conch., 1853, p. 298. Unio soleilleti BOURGUIGNAT, Voy. Choa, 1885, p. 39. Central Ethiopia. Loncosilla solenoides RAFINESQUE, Cont. Mon., 1831, p.7. Jellinghy River, Bengal. Unio subamygdalinus DROUET, J1. de Conch., 1895, p. 33. West Africa. Unio truncatus SPENGLER, Skiv. Selsk. Nat., III, 1795, p.66. Tranquabar. Unio verrucifer VON MARTENS, S. B. Nat. Fr., 1894, p. 216. Korea. Unio vinckei BoURGUIGNAT, Un. & Iv. Tan., 1886, p.18. Lake Tanganyika. Unio visserti BOURGUIGNAT, Un. & Ir. Tan., 1886, p. 21. Lake Tanganyika. Zaira elegans ROCHEBRUNE, Bull. Soc. Mal. Fr., III, 1886, p. 12. Zairia poirieri ROCHEBRUNE, Bull. Soc. Mal. Fr., III, 1886, p. 11. Zaina araneosa ROCHEBRUNE, Bull. Soc. Mal. Fr., III, 1886, p. 11. Zairia sordida ROCHEBRUNE, Bull. Soe. Mal. Fr., III, 1886, p. 18. Zaira disciformis ROCHEBRUNE, Bull. Soc. Mal. Fr., III. 1886, p. 10. The last five from the Kongo. I know nothing whatever of the genus Zaira. It may be merely a new name for the section Celatura of the genus Nodularia. It was proposed by Rochebrune.! TeAUMie @ Rud AVE); S: Male and female shells alike, dull-colored; beak sculpture nearly or quite radial marsupinum occupying the entire inner branchie, forming a pad-like mass. 1 Bull. Soe. Mal. Fr., 1886, p. 1. NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 863 Genus THTRAPLODON Spix, 1827. Castalia LAMARCK, An. sans Vert., VI, 1819, p. 66. Tetraplodon Sprx, Test. Fluv. Bras., 1827, p. 32. Prisodon LEA, Synopsis, 1852, p. 18. Shell triangular, solid, inflated, with a high, sharp, posterior ridge, behind which it is decidedly truncated; beaks very full and high, sculpture strictly radial, or.with one or two pairs of the central bars coalescing below, the whole extending more or less over the disk as strong ridges; epidermis thick, dark, dull colored; hinge line arched; there is a very strong, compressed pseudocardinal in the left valve, and there are two in the right, all in front of the beaks; behind them are several denticles; one lateral in the right valve and two in the left; all the teeth strongly vertically ridged; beak cavities deep, not com- pressed; anterior muscle scars small, deep; nacre whitish. Animal having the labial palpi wider than long; margins of mantle inferiorly open, but united posteriorly to form two siphons, branchial and anal; branchial opening surrounded with papille; anal opening smooth; outer branchie united to the mantle to their posterior ends; inner united to the abdominal sac; foot tongue-shaped, thick, produced anteriorly. (Troschel.) (Type, Tetraplodon pectinatum Spix.)! (Group of Tetraptodon ambiguus characters, as in the genus.) t TETRAPLODON AMBIGUUS (Lamarck) Sowerby.” *? Prisodon truncatus SCHUMACKER, Ess. Nouv. Syst., 1817, p. 139. *? Castalia ambiqua LAMARCK, An. sans Vert., VI, 1819, p. 67; GUERIN, Icon. Regne. An., 1829, pl. xxvu1.—* Wyatt, Man. Conch., 1838, p.65, pl. x1, fig. 5.— * CHENU, Man., 1859, II, p. 149, fig. 735.—* SowERBy, Conch. Icon., XVII, 1869, pl. 1, fig. 1. * Unio ambigua DESHAYES, Tr. Elem. Conch., 1839, p. 18, pl. XOCER, figs. 7-9. * Unio ambiguus SOWERBY, Rec. and Fos. Shells, X V1, 1823, fig. d.—* REEVE, Conch. Syst., 1841, p. 117, pl. rxxvu, fig. 2.—* CaTrLow and REEVE, Conch. Nom., 1845, p 55.—* DESHAYES, Tr. Elem., II, 1853, p. 219, pl. xxrx, figs. 7-9.— *KuSTER, Conch. Cab. Unio, 1856, p. 165, pl. xLvm1, fig. 1. * Tetraplodon pectinatum Sp1x, Test. Fluv. Bras.,1827, p.32, pl. xxv, figs. 3-4. “t+ Castalia inflata D’ORBIGNY, Guer. Mag., 1835, p. 43.—* HANLEY, Test. Moll., 1842; p. 173; * Biv. Shells, 1848, p. 173, pl. xxiv, fig. 12.—*pb’ORBIGNY, Voy. Am. Mer., 1843, p.598, pl. Lx xu, figs. 4-10. “t Castalia turgida HuPE, Moll. Nouv., III, 1857, p. 76, pl. x1v, fig. 1.—* SOWERBY, Conch. Icon., XVII, 1869, pl. 111, fig. 11. 1 The name Castalia applied by Lamarck to this genus in 1819 can not stand, as it was used in Vermes in 1817. I have every reason to suppose that the young in this and all the South American genera of Unionide are carried in the inner gills. ?Schumacher gave only a brief description of his Prisodon truncatus, and referred to no figure, and the same can be said of Lamarck regarding his Castalia ambigua, both of which are supposed by authors to be the above species. But either of these descriptions apply equally well to several species, therefore they can not be con- sidered authentic. 864 PROCEEDINGS OF THE NATIONAL MUSEOM. VOL, XXII. *t Castalia hanleyana SOWERBY, Conch. Icon., XVII, 1869, pl. 1, fig. 5.—* Pa Tet, Conch. Sam., III, 1890, p. 189. ; * Castalia carolinensis SOWERBY, Conch. Icon., XVII, 1869, pl. 11, fig. 6.— *P2TEL, Conch. §am., ILI, 1890, p. 189. * Castalia cordata STROBEL, Mat. Mal., Pt. I, 1874, p. 75. Amazon and Rio de la Plata River systems. | TETRAPLODON QUADRILATERUM d’Orbigny. * Castalia quadrilatera D’ORBIGNY, Guer. Mag., No. 62, 1835, p. 42.—* HANLEY, Test. Moll., 1842, p. 173; * Biv. Shells, 1843, p. 173.—*D’ORBIGNY, Voy. Am. Mer , 1843, p.599, pl. Lxx111.—* TROSCHEL, Arch. fiir Nat., XIII, 1847, Pt. 1, p. 222.—* VON IHERING, Arch. fiir Nat., 1893, p. 89. * Mya ambigua Woop, Ind. Test. Rev., 1856, p. 200, pl. 1 (supp.), fig. 9. * Castalia acuticosta HuPE, Moll. Nouv., III, 1857, p. 77, pl. xv, fig. 3.—* SOWERBY, Conch. Icon., XVII, 1869, pl. 111, figs. 12, 12a, 12b.—* Pa@TEL, Conch. Sam., TEN L890 pa 1So: * Castalia cordata H. and A. ADAMS, Gen. Rec. Moll, II, 1857, p. 509, pl. cxx; III, figs. 2, 2a.—*SowrERBy, Conch. Icon., XVII, 1869, pl. 11, fig. 3.—*P& TEL, Conch. Sam., III, 1890, p. 189. * Castalia latiquadrata SOwERBY, Conch. Icon., XVII, 1869, pl. 11, fig. 10.—*PaTEL, Conch. Sam., III, 1890, p. 189. Tropical South America east of the Andes. Perhaps a form of am- biguus. +TETRAPLODON OVATUS Sowerby. * Castalia ovata SOWERBY, Conch. Icon., XVII, 1869, pl. 1, fig. 4.—* Pa TEL, Conch Sam., III, 1890, p. 189. Brazil. +TETRAPLODON RETUSUS Hupe. * Castalia ambigua SOWERBY, Conch. Man., 1839, fig. 140. * Castalia retusa HUPE, Moll. Nouv., III, 1857, p. 75, pl. xiv, fig. 2.—*SowERBY, Conch. Icon., X VII, 1869, pl. 1, fig. 2,—* PTEL, Conch. Sam., III, 1890, p. 189. Guiana. TETRAPLODON QUADRATUS Sowerby. x * Castalia quadrata SOWERBY, Conch. Icon., XVII, 1867, pl. 1, figs. 7, Ta, 7b.—= *P TEL, Conch. Sam., ILI, 1890, p. 189. TETRAPLODON SCHOMBERGIANUS Sowerby. *Castalia schombergiana SOWERBY, Conch. Icon., XVII, 1869, pl. xiv, fig. 3.— * PHTEL, Conch. Sam., III, 1890, p. 189. Guiana. (Group of Tetraplodon multisulcatus.) Shell small, somewhat compressed, with a moderate posterior ridge, and covered throughout with delicate ridges; teeth more Unionoid than in the typical Tetraplodons. Animal unknown. NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 865 TETRAPLODON MULTISULCATUS Hupe. * Castalia ambigua BLAINVILLE, Man., 1825, p. 539, pl. LX v1, fig. 4. “Castalia multisuleata HuPE, Moll. Nouvy., III, 1857, p. 75, pl. x1v, fig. 4.—* Sow- ERBY, Conch. Icon., XVII, 1869, pl. 1, figs. 9, 9a, 9b.—* PaTEL, Conch. Sam., III, 1890, p. 189. Brazil. TETRAPLODON ECARINATUS Mousson. “Castalia ecarinata Mousson, Mal. Bl, XVI, 1869, p. 185.—* PrErrrER, Nov. Conch., IV, 1876, p. 140, pl. cxxx1, figs. 9, 10.—* Pare, Conch. Sam., III, 1890, p. 189. Puerto Nuevo, Magdalena River, Colombia. TETRAPLODON CROSSEANUS Hidalgo. * Castalia crosseana HIDALGO, Jl. de Conch., XIII, 1865, pp. 316, 429, pl. xrv, fig. 2.—* PATEL, Conch. Sam., III, 1890, p. 189. Imbabura, Ecuador. Genus CASTALINA Von Ihering, 1891. Castalina VON IHERING, Zool. Anzeiger, 1891, p. 478. Shell somewhat triangular, inflated, but having the sides a little flat- tened, solid, with a strong posterior ridge, the subtruncate posterior Slope rising almost to a wing above; beaks full, high, with nearly strictly radial sculpture; surface slightly, irregularly, concentrically sulcate, sometimes a little corrugated; posterior slope generally plicate or corrugated; epidermis thick, rayless, blackish; hinge plate arched, wide; two to several radial pseudocardinals in each valve; two verti- cally or obliquely striate laterals in the left valve and one in the right; beak cavities deep; anterior muscle scars deep, united; nacre whitish. Animal, probably very much like that of Tetraplodon, but with the mantle closed or open at the branchial and anal openings. (Type, Castalina martensi von Ihering.) (Group of Castalina martenst.) Characters as in the genus. tCASTALINA MARTENSI von Ihering. * Castalina martenst VON IHERING, Zool. Anz., XIV, 1891, p.477; Arch. fiir Nat., 1893, p. 81, pl. 11, fig. 5. Southern Brazil. tCASTALINA NEHRINGI von Ihering. Castalina nehringi VON THERING, Zool. Anz., XIV, 1891, p. 477; * Arch. fiir Nat., 1893, p. 75, pl. 111, fig. 4. Southern Brazil. Proc. N. M. vol. xxii 55 866 © +=PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. +tCASTALINA PSAMMOICA d’Orbigny. *Unio psammoica D’ORBIGNY, Guer. Mag., 1835, p. 85; * Voy. Am. Mer., 1843, p. 608, pl. Lxx1, figs. 4-7.—* KusTEeR, Conch. Cab. Unio, 1861, p. 263, pl. LXxxvil, fig. 4. “Castalina psammoica VON IHERING, Arch. fiir Nat., 1893, p. 79. *Margaron (Unio) psammoicus LEA, Syn., 1852, p. 19; 1870, p. 30. * Unio psammoicus H. and A. ADAMS, Gen. Rec. MollL., IT, 1857, p. 498.—* SowErBy, Conch. Icon., XVI, 1868, pl. xc1, fig. 507.—* ParerL, Conch. Sam., III, 1890, p. 164. Tributaries of the Rio de la Plata. +CASTALINA UNDOSA von Martens. *Castalia wndosa VON MARTENS, S. B. Nat. Fr., 1885, p. 148; * Conch. Mitth., III, 1885, p. 19, pl. xu, figs. 2, 3.—P#TEL, Conch. Sam., III, 1890, p. 190.—von IneRING, Arch. fiir Nat., 1893, p. 84.—* NEwrRING, Jl]. de Conch., 1894, p. 82. Southern Brazil. (Group of Castalina orbignyt.) Shell irregularly rhomboid, somewhat compressed, equilateral, ante- rior end rounded, posterior truncate, having a wide, shallow, radiating furrow above the rounded posterior ridge which causes a sinuosity in the outline; epidermis brownish yellow, hinge crenate; one pseudo- cardinal in the left valve and two in the right, which are jagged or somewhat broken up; laterals elongate and striate. CASTALINA ORBIGNYI Hupe and Deville.1 *Unio orbignyt Hupz and DEVILLE, Rev. et Mag., 1850, p. 645, pl. xvi, fig. 1.— *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 495. *Margaron ( Unio) orbignyi LEa, Syn., 1852, p. 24; 1870, p. 37. *Unio orbignyana Hupr, Moll. Nouv., III, 1857, p. 83, pl. xv, fig. 1. *Unio @orbignyanus SOWERBY, Conch. Icon., XVI, 1868, pl. xcv1, fig. 523. * Unio orbignyanus PaTEL, Conch. Sam., ITI, 1890, p. 162. Upper Amazon. Genus CASTALIELLA Simpson, 1900. (Type, Castalia sulcata Krauss.) Shell subtriangular, greatly inflated, subsolid and strongly sulcate; beaks high, the sculpture regularly radiate; posterior ridge well defined and sharp; epidermis reddish chestnut; hinge line narrow, arched; there are two vertically striate pseudocardinals in the right valve, separated by a parallel-sided socket, the lower the larger and split, and three in the left standing side by side, the middle one the largest, the lower two torn, with a few small tubercles in each valve behind them; one granular ‘IT do not know just wheve to place this species, never having seen it, and the descriptions not being full in essential details. It is probably a Castalina. No men- tion is made of sculpture, but from the figure it seems to be slightly sulcate. _——s eC No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. S67 lateral in the right valve and two in the left, which show traces of vertical striation; beak cavities deep, not compressed; nacre purple.! Animal unknown. fCASTALIELLA SULCATA Krauss. *Castalia sulcata Krauss, Zeits. fiir Mal., 1849, p. 99.—* PmTEL, Conch. Sam., ITI, 1890, p. 190. * Unio kraussti Lm, Pr. Ac. N. Sci. Phila., VI, 1853, p. 376.2 *Margaron (Unio) kraussti LEA, Syn., 1870, p. 35. Surinam. Genus CALLONAIA Simpson, 1900. (Type, Castalia duprei Recluz. ) Shell triangular, thin, inflated, with very high, full beaks which appear to be without sculpture;* a very high, sharp posterior ridge extends to the base of the shell, above which it is decidedly truncated; anterior end somewhat pointed above, rounded below; ligament very short; surface nearly smooth but somewhat sulcate anteriorly; epi- dermis bright greenish yellow, shining; hinge line strongly arched; teeth compressed, high; two pseudocardinals in each valve, all inter- locking and side by side; one lateral in the right valve and two in the left, a little ragged and granularly vertically striate; beak cavities very deep, not compressed; muscle scars superficial; nacre brilliant, bluish white, radiately striate posteriorly. Animal unknown. tCALLONAIA DUPREI Recluz. * Castalia duprei RECLUZ, Rev. Zool., 1843, p. 305, pl. xxxv; * Mag. Zool., 1843, p. 1.—* H. and A. ApaMs, Gen. Rec. Moll., II, 1857, p. 509.—* CuEnu, Man., 1859, II, p. 149, fig. 738.—* Pa: TEL, Conch. Sam., III, 1890, p. 189. * Unio dupret CATLOW and REEVE, Conch. Nom., 1845, p. 58. * Margaron (Prisodon) duprei LEA, Syn., 1852, p. 18; 1870, p. 27. *Castalia dolabella SOwERBY, Conch. Icon., XVII, 1869, pl. 111, figs. 13 a, 13 b, 13 ¢.— * PaTEL, Conch. Sam., III, 1890, p. 189. Great lakes of Para, Brazil. 1'This species, of which the type is in the Lea collection, has some of the characters of Prisodon and Castalina, but I can not satisfactorily refer it to either, and it is cer- tainly not a Diplodon. Its strong sulcation, reddish chestnut epidermis, and purple nacre are characters that are not possessed by any South American Naiades that Iam acquainted with. ?Lea received this shell from Dr. Dunker under the name of Castalia sulcata Krauss. Believing it to be a Unio, he placed it in that genus, and the name sulcatus being preoccupied in Unio, he changed it as above. 3In one of Lea’s shells the beaks are almost perfect, and not a sign of sculpture can be seen. 868 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. Genus HYRIA. Lamarek, 1819. (Type, Hyria corrugata Lamarck.) Hyria LAMARCK, An. sans Vert., VI, 1819, p. 81.' Triplodon Spr1x, Test. Fluv. Bras., 1827, p. 35. Naia SwaInsoN, Tr. on Mal., 1840, p. 379. Shell subrhomboidal, solid, slightly inflated, narrower and dorsally , winged in front, and having a post-dorsal wing; posterior ridge often double, causing the shell to be biangulate behind; beaks low, with strong, nearly radial sculpture, the central bars coalescing below, the whole continuing as strong, radial, and zigzag ridges over more or less of the disk; epidermis thick, greenish when young, brownish or black- ish when old; there are two or more rather short, compressed pseudo- cardinals in each valve, which are much split up into denticles; one lateral in the right and two in the left valve; teeth often somewhat vertically striated ; dorsal scars numerous; nacre whitish. Animal with mantle lobes united together behind and furnished with two short, contractile siphons. (J. H. Gray.) Subgenus HYRIA Lamarck, 1819. (Type, Hyria corrugata Lamarck.) Characters as in the genus. + HYRIA CORRUGATA Lamarck. * Hyria corrugata LAMARCK, An.sans Vert., VI, 1819, p. 82.—* SowERBY, Rec. and Foss. Shells, 1828, No. XVI, fig. d; *Conch. Man., 1839, fig. 144.—* REEVE, Conch. Syst., I, 1841, p. 120, pl. xc, fig. 2.—* Haney, Test. Moll., 1842, p. 215; * Biv. Shells, 1843, p.215.—* CarLow and REEVE, Conch. Nom., 1845, p. 65.— * KUSTER, Conch. Cab. Unio, 1856, p. 140, pl. x11, fig. 1.—* CHENU, Man., 1859, II, p. 149, fig. 733.—* REEVE, Elem. Conch., II, 1860, pl. xx x1, fig. 179.—* Sow- ERBY, Conch. Icon., XVII, 1869, pl.1, fig. 1.—* Pa TEL, Conch. Sam., III, 1890, p. 189. * 2 Unio corrugata BLAINVILLE, Man., 1825, p. 539, pl. Lx vil, fig. 1. 1Jn 1753 Klein (Testamen Méthodi, p. 135, pl. 9, fig.36) used the name Triquctra for the shell which has since been known as Hyria syrmatophora Gronovius. In 1817 Schumacher founded the genus Prisodon (Essai Nouv. Systeme, p. 138), in which under section a he placed his P. obliquus, a smooth species considerably drawn out, and in section b he put P. truncatus, which is possibly the same as the Castalia ambigua of Lamarck. These certainly belong to two genera. Dr. Lea in the Synopsis used Klein’s name for the winged shell (Hyria corrugata Lamarck), and used the name Prisodon for Schumacher’s section b (P. truncatus Schumacher). Lea erred in this, because Klein was not a binomial author, and his name-can not be used. In the proceedings of the U.S. National Museum, XVIII, 1896, p. 315, I restored the name of Prisodon Schumacher to the first section, pointing out that the P. obliquus Schu- macher must stand as its type. Two years after Schumacher’s name appeared Lamarck published the generic name Hyria in the Animaux sans Vertebres, VI, 1819, p. 81, and placed in it first his H. avicularis, which equals Schumacher’s P. obliquus, and secondly H. corrugata. I now believe that these corrugated forms are generically distinct from the smooth ones, and as Schumacher’s Paxyodon is almost certainly founded on one of the smooth species, Lamarck’s name Hyria can be used by elimi- nation for the corrugatus and allied forms. Se ee ee NO, 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 869 * Margaron (Triquetra) corrugata LEA, Syn., 1852, p. 17; 1870, p. 25. * Triquetra corrugata H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 508. * ? Triplodon rugosum Spix, Test. Fluv. Bras., 1827, p. 35, pl. XXIX, figs. 1,2. * Hyria rugosa DESHAYES, Ene. Méth., II, 1827, p. 151, pl. ccxivtr, fig. 2. * Mya angulata Woop, Ind. Test. Sup., 1828, p. 3, pl. 1, fig. 12. * Margarita (Unio) angulatus Lea, Syn., 1836, p. 10; 1838, p. 13. * Hyria exasperata SOWERBY, Conch. Icon., XVII, 1869, pl. u, fig. 3.—*PaTEL, Conch. Sam., III, 1890, p. 189. Eastern Peru to Guiana; south throughout Brazil. +HYRIA RUGOSISSIMA Sowerby. * Hyria rugosissima SOWERBY, Conch. Icon., XVII, 1869, pl. 111, fig. 5.—* Parez, Conch. Sam., III, 1890, p. 189. Amazon River. HYRIA LATIALATA Sowerby. * Hyria latialata SOWERBY, Conch. Icon., XVII, 1869, pl. u, fig. 4.—* PaTeL, Conch. Sam., ITI, 1890, p. 189. Guiana. +HYRIA TRANSVERSA Hupe. * Hyria transversa HUPE, Moll. Nouv., III, 1857, p. 79, pl. xv, fig. 1.—* SOWERBY, Conch. Icon., XVII, 1869, pl. rv, fig. 7.—* P&TEL, Conch. Sam., III, 1890, p. 189. Brazil. Subgenus TRIQUETRANA Simpson, 1900. (Type, Unio stevensi Lea.') Shell compressed, with a feebly developed posterior wing, thickened in front; each valve with about three somewhat divergent pseudo- cardinals which are sometimes nearly smooth and at others break into denticles; one granular lateral in the right valve and two in the left which are sometimes obliquely and faintly vertically striate; external sculpture much as in Hyria. Animal unknown. +HYRIA STEVENSI Lea. * Unio stevensi La, Pr. Ac. N. Sci. Phila., I, 1871, p. 188; «Jl. Ac. N. Sci. Phila., VIII, 1874, p. 22, pl. vit, fig. 19; *Obs., XIII, 1874, p. 26, pl. vil, fig. 19. Yuruari River, Guiana. Genus PRISODON Schumacher, 1817. (Type, Mya syrmatophora Meuschen in Gronovius. ) Triquetra KLEIN, Tent. Methodi, Ost, 1753, p. 135. Prisodon SCHUMACHER (part), Essai Nouv. Syst., 1817, p. 138. Paxyodon SCHUMACHER, Essai Nouv. Syst., 1817, p. 139. Shell aviculiform, solid, somewhat inflated, with a well-developed posterior ridge, the area above it being excavated, its outline from the 1This shell bears much the same relation to Hyria that Castalina does to Tetra- plodon, its teeth being more unionoid than those of Hyria and the shell more compressed. 870 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. hinder basal point to the end of the post dorsal wing generally incurved; posterior slope having a radial row of plications, as in Cris- taria; surface slightly concentrically sculptured and having delicate radiating lire throughout, so that the surface is microscopically retic- ulated; beaks full, but not elevated, without sculpture as far as noticed ; epidermis yellowish green or brownish, shining, often bronzy; hinge narrow under the beaks, widening in front and behind; left valve with two or more elongated compressed pseudocardinals which show a tendency to break into denticles, and two laterals; right valve with two or more similar pseudocardinals and a single lateral; laterals vertically, granularly striate. Animal with the labial palpi triangular, the hinder parts free as in Unio, not united posteriorly; branchie large, equal in size. (Troschel.) Subgenus PRISODON Schumacher, 1817. (Type, Mya syrmatophora Meuschen. ) Characters as in the genus. +PRISODON SYRMATOPHORUS Meuschen in Gronovius. * Triquetra subviridis KLEIN, Tent. Méth. Ost., 1753, p. 135, pl. 1x, fig. 36.'\—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p.505; III, pl. cxx, figs. 1, la.—* P&TEL, Conch. Sam., III, 1890, p. 189. * Margaron (Triquetra) subviridis Lra, Syn., 1852, p. 17; 1870, p. 25. * Mya syrmatophora MEUSCHEN in Gronovius, Zooph., 1781, pl. x vi1t, figs. 1, 2.2— *GMELIN, Syst. Nat., 1788, No. 3222.—* Woop, Gen. Conch., I, 1815, p. 110.— * DILLWYN, Cat., I, 1817, p.54.—* Woop, Ind. Test., 1825, p. 12, pl. 01, fig. 36. * Hyria syrmatophora SOWERBY, Rec. and Foss. Shells, XVI, 1823, fig.d; ~Conch. Man., 1839, fig. 143.—* REEVE, Conch. Syst., I, 1841, p. 120, pl. xc, fig. 1.— *HANLEY, Test. Moll., 1842, p. 214; *Biv. Shells, 1843, p. 214.—* CaTLow and REEVE, Conch. Man., 1845, p. 65.—* TROSCHEL, Arch. fiir Nat., XIII, Pt. I, 1847, p. 271.—* Woop, Ind. Test. rev., 1856, p. 17, pl. 11, fig. 36.—* HuPE, Moll. Nouv., III, 1857, p. 79, pl. xv, fig. 2.—*SOwWERBy, Conch. Icon., XVII, 1869, pl. v, fig. 2.—* PazTuL, Conch. Sam., IIT, 1890, p. 189. * Unio syrmatophora DESHAYES, Tr. Elem., II, 1853, p. 219, pl. xxrx, figs. 10, 11. * Margarita (Unio) syrmatophorus Lua, Syn., 1836, p. 11; 1838, p. 13. * % Paxyodon ponderosus SCHUMACHER, Hss. Nouv. Syst., 1817, p. 140, pl. x1, fig. 3. * Hyria avicularis var. b. LAMARCK, An. sans Vert., VI, 1819, p. 82. Guiana; Brazil. tPRISODON COMPLANATUS Hupe. * Hyria complanata Hupx, Moll. Nouv., III, 1857, p. 80, pl. xv, fig. 3.—* SOWERBY, Conch. Icon., XVII, 1869, pl. Iv, fig. 9.—* Pa TEL, Conch. Sam., III, 1890, p. 189. * Hyria syrmatophora KusTER, Conch. Cab. Unio, 1856, p. 141, pl. XL, fig. 4. Guiana. 'Klein’s species evidently equals the syrmatophora of Gronovins, but his name can not be used, as he was not a binomial author. 2Gronovius used only generic names in the Zoophylaceum, and died while the work was in progress. Meuschen finished it and figured the above species and described it in the explanation of the plate, No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 871 + PRISODON ALATUS Sowerby.! * Hyria alata SOwERBY, Conch. Icon., XVII, 1869, pl. v, fig. 13.—ParEL, Conch. Sam., IIT, 1890, p. 189. Guiana. PRISODON CASTELNAUDI Hupe. * Hyria castelnaudi Huper, Moll. Nouv., III, 1857, p. 81, pl. xv, fig. 1.—* Sow- ERBY, Conch. Icon., XVII, 1869, pl. rv, fig. 8.—* PaTEL, Conch. Sam., III, 1890, p. 189.” Brazil. tPRISODON OBLIQUUS Schumacher. * Prisodon obliquus SCHUMACHER, Ess. Nouv. Syst., 1817, p. 139, pl. x1, fig. 2.3 * Hyria obliqua P#TEL, Conch. Sam., ITI, 1890, p. 189. *Hyria avicularis LAMARCK, An. sans Vert., VI, 1819, p. 82.—* Croucu, Ill. Int. Lam., 1827, p.16, pl. 1x, figs. 5 a, b.—*Srark, Nat. Hist., II, 1828, p. 89.— *WyatTt, Man. Conch., 1838, p. 67, pl. v, fig. 4.—* DELESsERT, Rec. Coq. Lam., 1841, pl. xu, fig. 9.—* HANLEY, Test. Moll., 1842, p. 214; *Biv. Shells, 1843, p. 214, pl. xxiv, fig. 11.—*CarLow and REEVE, Conch. Nom., 1845, p. 65.— * TROSCHEL, Arch. fiir Nat., XIII, Pt. 1, 1847, p. 271, pl. vi, fig. 3.—* CHENu, Man., 1859, II, p. 149, fig. 734.—* SowErRBy, Conch. Icon., XVII, 1869, pl. 111, figs. 6 a, b. *~ Unio avicularis DESHAYES, Enc. Méth., II, 1830, p. 583; ~Traite Elem. Conch., 1839, p. 18, pl. xxx, figs. 10, 11. * Hyria avicularia GUERIN, Icon. Regne An., 1844, II, pl. xxv, fig. 8. * Unio caudatus WAGNER, Test. Fluv. Bras., 1827, p. 35, pl. xx vil, figs. 1, 2. * Diplodon furcatum Spix, Test. Fluv. Bras., 1827, p. 35, pl. xxvut, figs. 1, 2. * Hyria elongata SWAINSON, Ex. Conch., 1841, p. 29, pl. xxiv. * Triquetra elongata H. and A. ADAMS, Gen. Rec. Mol1., I!, 1857, p. 508. Amazon drainage; southward through Brazil. PRISODON RECTUS Sowerby.‘ * Hyria recta SOWERBY, Conch. Icon., X VII, 1868, pl. v, fig. 10.—* P# TEL, Conch. Sam., IIE, 1890, p. 189. South America; locality unknown. tPRISODON BROWNIANUS Lea. *Unio brownianus Lea, Tr. Am. Phil. Soc., 1838, p. 108, pl. xxrv, fig. 116; *Obs., II, 1838, p. 108, pl. xxiv, fig. 116.—* TroscHEL, Arch. fiir Nat., V, 1839, Pt. 2, p. 237. * Margarita (Unio) brownianus LEA, Syn., 1838, p. 13. * Hyria browniana HANLEY, Test. Moll., 1842, p.215; * Biv. Shells, 1845, p. 215.— *CaTLOW and REEVE, Conch. Nom., 1845, p.65.—* SowERBY, Conch. Icon., XVII, 1869, pl. v, fig. 12.—* Pa TEL, Conch. Sam., ITI, 1890, p. 189. 1 This form has the posterior wing greatly produced and curved upward. I doubt whether it is more than a form of syrmatophora. 2This is probably a variety of obliquus Schumacher. 3Only a part of the interior is figured, but from its form I think there need be no doubt as to what the author meant. 4This may be only a peculiar obliquus. The dorsal line curves up in the center. 872 PROCEEDINGS OF THE NATIONAL MUSEUM, ~ VOL. XXII. | * Margaron (Triquetra) browniana LEA, Syn., 1852, p.17; 1870, p. 26. * Triquetra browniana H.and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 508. Amazon River. Subgenus HYRIANA Simpson, 1900. (Type, Unio ortonit Lea.) Shell solid, compressed, elliptical, with a slight posterior dorsal wing and a strong one anteriorly, and a well-defined but low posterior ridge ending in a point well above the base, inflated at post-basal region, dis- tinctly suleate; beaks low, apparently not rayed; epidermis shining, light yellowish brown; hinge line evenly curved; pseudocardinals numerous, much split into denticles and crooked; two laterals in the left valve and one (no doubt) in the right; beak cavities very shallow; dorsal scars numerous, anterior scars deep; nacre whitish, radially grooved along the palleal line.' tPRISODON ORTONII Lea. * Unio ortonti Lma, Pr. Ac. N. Sci. Phila., XII, 1868, p.161; *Jl. Ac. N. Sci. Phila., VI, 1868, p. 321, pl. Lu, fig. 184; *Obs., XII, 1869, p. 81, pl. Lu, fig. 134.— *PmTEL, Conch. Sam., III, 1890, p. 162. * Margaron (Unio) ortonit LEA, Syn., 1870, p. 28. River Napo, Ecuador. Genus DIPLODON Spix, 1827. (Type, Diplodon ellipticum Spix.) Diplodon Sri1x, Test. Fluy. Bras., 1827, p. 33, pl. XXvI. Shell elliptical, rounded, elongated or trapezoidal, with rather low beaks which are more or less distinctly radially sculptured, the ridges usually curved and approaching below, with a low or scarcely developed posterior ridge; surface slightly concentrically sculptured, sometimes broken into fine nodules or corrugations; epidermis dull, rayless; hinge with two compressed pseudocardinals in the right valve, and one slender lateral, and two compressed pseudocardinals in the left valve, one in front of the other, and two laterals; nacre bluish to white, dull, often blotched; beak cavities shallow; dorsal scars numerous, forming a row in the beak cavity parallel with the hinge line. Animal with the marsupium occupying nearly the whole length of the inner branchie, a few ovules sometimes being found in the outer gills; ” 17 have seen only a single left valve, the type. The anterior wing of this is gone, and the epidermis is somewhat eroded. The shell has been injured when young, which has probably caused a long, low, radial furrow that runs in front of the pos- teriorridge. The space occupied by the pseudocardinals is not so long proportionally as in typical Prisodon. 27 found a few ovules in the outer gills of D. acutirostris Lea, of South America, while the inner gills were full, and Mr. Henry Suter states that the ovules of D. men- ziezi Gray, of New Zealand, occupy the inner gills for the most part. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 873 branchie rather large, angular at base, inner much the larger, united their whole length to the abdominal sac; palpi scarcely projecting posteriorly; mantle very thin, thickened on the edges; branchial open- ing papillose, separated from the smooth anal opening by a strong bridge; superanal opening not closed below. Subgenus DIPLODON Spix, 1827. Beak sculpture consisting of unbroken ridges, covering the whole beaks. Animal having the labial palpi rounded below and at posterior base, scarcely projecting behind. (Type, Diplodon ellipticum Spix.) (Group of Diplodon delodontus.) Shell elliptical to subtrapezoidal, inflated, subsolid, with a low pos- terior ridge, sometimes having a slight posterior dorsal wing; one or two central pairs of bars of the beak sculpture usually joining below; pseudocardinals sometimes slightly dentellate. Animal having the characters of the genus. + DIPLODON DELODONTUS Lamarck. *Unio delodonta LAMARCK, An. sans. Vert., VI, 1819, p. 77.—* DELESSERT, Rec. Coq. Lam., 1841, pl. xu, fig. 7—*D’ORBIGNY, Voy. Am. Mer., 1843, p. 605.— *CaTLow and REEVE, Conch. Nom., 1845, p. 58.—* CHENU, IIl. Conch., 1858, pl. xu, figs. 1. la. * Margarita (Unio) delodontus LEA, Syn., 1836, p. 26; 1838, p. 20. *Unio délodontus HANLEY, Test. Moll., 1842, p.194; * Biv. Shells, 1843, p. 194, pl. XXI, fig. 56.—* H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 493.—* KusrEr, Conch. Cab. Unio, 1861, p. 234, pl. Lx xvi, fig. 5.—* Pare, Conch. Sam., III, 1890, p. 150. *Margaron (Unio) delodontus LEA, Syn., 1852, p. 29; 1870, p. 46. *Unio delodon STROBEL, Mat. Mal., Pt. 1, 1874, p. 71. *t Unio lacteolus LEA, Tr. Am. Phil. Soc., V, 1834, p. 40, pl. vi, fig. 19; * Obs., I, 1834, p. 152, pl. vii, fig. 19.—* D’ORBIGNY, Mag. Zool., 1835, p. 34. Argentina; Paraguay; Uruguay; southern Brazil. + DIPLODON RHOMBEUS Wagner. *Unio rhombeus WAGNER, Test. Fluv. Bras., 1827, p. 34, pl. xxviu, figs. 1, 2.— * HANLEY, Test. Moll, 1842, p. 208; * Biv. Shells, 1843, p. 208, pl. xxu1, fig. 20.— *CaTLOW and REEVE, Conch. Nom., 1845, p. 63.—*H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 492.—* P&TEL, Conch. Sam., ITI, 1890, p. 165. * Margarita (Unio) rhombeus LEA, Syn.. 1836, p. 39; 1838, p. 25. * Margaron ( Unio) rhombeus Lea, Syn., 1852, p. 38; 1870, p. 61. Brazil. tDIPLODON PAULISTA von Ihering. * Unio paulista VON IHERING, Arch. fiir Nat., 1893, p. 93, pl. 1v, fig. 7.—* NEHRING, Jl. de Conch., 1894, p. 82. Sao Paulo, Brazil. $74 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. tDIPLODON AMPULLACEUS Lea. * Unio ampullaceus LEA, Pr. Ac. N. Sci. Phila., X, 1866, p.34; *Jl. Ac. N. Sci. Phila., VI, 1868, p. 269, pl. xxxv, fig. 83; *Obs., XII, 1869, p. 29, pl. xxxy, fig. 83. * Margaron (Unio) ampullaceus LEA, Syn., 1870, p. 53. South America. t DIPLODON APPRIMUS Lea. * Unio apprimus Lua, Pr. Ac. N. Sci. Phila., X, 1866, p. 34; *Jl. Ac. N. Sci. Phila., VI, 1868, p. 263, pl. xxx111, fig. 78; Obs., XII, 1869, p. 23, pl. xx x11, fig. 78. * Margaron (Unio) apprimus LEA, Syn., 1870, p. 46. South America. +tDIPLODON WYMANII Lea.! *Unio wymanii Lea, Pr. Ac. N. Sci. Phila., IV, 1860, p.90; *J1. Ac. N. Sci. Phila., VI, 1863, p. 381, pl. xxu, fig. 289; *Obs., X, 1863, p. 17, pl. xu, fig. 289.— *SowERBY, Conch. Icon., XVI, 1868, pl. LXxx1v, fig. 449.—* VON MARTENS, Mal. B1., XV, 1868, p. 193.—* Pa&TEL, Conch. Sam., III, 1890, p. 172. * Margaron (Unio) wymanti, Lua, Syn., 1870, p. 30. Uruguay River, South America. DIPLODON EXPANSUS Kuster.? * Unio expansus KUSTER, Conch. Cab. Unio, 1856, p. 149, pl. xLut, fig. 5.—* P&S TEL, Conch. Sam., III, 1890, p. 152. Brazil ?. +DIPLODON PECULIARIS Lea. *Unio peculiaris Lua, Pr. Ac. N. Sci. Phila., X, 1866, p. 33; *J1. Acad. N. Sci. Phila., VI, 1868, p. 265, pl. xxxiv, fig. 80; Obs., XII, 1869, p. 25, pl. xxxIv, fig. 80. * Margaron ( Unio) peculiaris LEA, Syn., 1870, p. 47. *tUnio paraguayensis Lua, Pr. Ac. N. Sci. Phila., X, 1866, p. 34; *Jl. Ac. N. Sei. Phila., VI, 1868, p. 271, pl. xxxv, fig. 85; Obs., XII, 1869, p. 31, pl. xxxv, fig. 85.—* VON MARTENS, S. B. Nat. Fr., 1895, p. 34. * Margaron (Unio) paraguayensis LEA, Syn., 1870, p. 45. *?Unio nitidulus KUSTER, Conch. Cab. Unio., 1848, p. 226, pl. LXxviI, fig. 6.— *PatTEL, Conch. Sam., III, 1890, p. 161. Paraguay. +DIPLODON FIRMUS Lea.’ *Unio firmus LEA, Pr. Ac. N. Sci. Phila., X, 1866, p.33; *J]. Ac. N. Sei. Phila., VI, 1868, p. 267, pl. XXXIV, fig.82; *Obs., XII, 1869, p. 27, pl. xxx1v, fig. 82. *Margaron (Unio) firmus LEA, Syn., 1870, p. 45. DIPLODON FIRMUS var. BOZTTGERI von Ihering. *Unio firmus LEA var. betigeri VON IHERING, Arch. fiir Nat., 1893, p. 105, pl. rv, fig. 2.—* NEHRING, Jl. de Conch., 1894, p. 83. Brazil. ' Extremely close to apprimus, and probably only a young shell of that species. 27 know nothing of this. It looks more like an Australian than a South American form, and is quite likely a D. australis. Kuster credits it to Charpentier mann- script. ! 3A little longer and more solid than peculiaris, but I doubt whether it is distinct. The types of these two and paraguayensis are badly worn. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 875 t DIPLODON URUGUAYENSIS Lea. *Unio uruguayensis Lea, Pr. Ac. N. Sci. Phila., IV, 1860, p. 90; *J1. Ac. N. Sci. Phila., V, 1863; p. 388, pl. XLV, fig. 298; *Obs., X, 1863, p. 241, pl. xLv, fig. 298.— *SOWERBY, Conch. Icon., XVI, 1868, pl. LXxxIv, fig. 448.—* Parr, Conch. Sam., III, 1890, p. 171. *Margaron (Unio) uruguayensis La, Syn., 1870, p. 46. Uruguay River, South America. tDIPLODON WHEATLEYANUS Lea. *Unio wheatleyanus Lea, Pr. Ac. N. Sci. Phila., VIII, 1856, p.94; *Obs., VI, 1857,p. 28, pl. xxIx, fig. 23; *Jl. Ac. N. Sci. Phila., 1858, p. 308, pl. xx1x, fig. 23.— *SOWERBY, Conch. Icon., XVI, 1868, pl. XL, fig. 487.—* STROBEL, Mat. Mal., Pt. 1, 1874, p. 71. *Margaron (Unio) wheatleyanus LEA, Syn., 1870, p. 50. Argentina. tDIPLODON RUDUS Lea. *Unio rudus L¥A, Pr. Ac. Nat. Sci. Phila., II], 1859, p. 187; *J1. Ac. Nat. Sci. Phila., IV, 1860, p. 266, pl. xi, fig.146; Obs., VII, 1860, p. 84, pl. xin, fig. 146.—* KusTER, Conch. Cab. Unio, 1861, p. 261, pl. LXxxvu11, fig. 1. *Margaron (Unio) rudus LEA, Syn., 1870, p. 50. * Unio rudis P®TEL, Conch. Sam., ITI, 1890, p. 166. Rio de la Plata. tDIPLODON GREEFIANUS von Thering. *Unio greefianus VON IHERING, Arch. fiir Nat., 1893, p. 96, pl. Iv, fig. 18.!\—*NEH- RING, Jl. de Conch., 1894, p. 82. Sao Paulo, Brazil. tDIPLCDON PIGER Lea. *Unio piger Lua, Pr. Ac. N. Sci. Phila., IV, 1860, p.90; *Jl. Ac. N. Sci. Phila.,V, 1863, p. 388; *Obs., X, p. 23, pl. XLV, fig. 296.—* SowERBY, Conch. Icon., XVI, 1868, pl. LXXXIV, fig. 449.—* Pa TeL, Conch. Sam., III, 1890, p. 163. * Margaron (Unio) piger LEA, Syn., 1870, p. 46. Uruguay River, South America. tDIPLODON PRUNOIDES Lea. *Unio prunoides Lea, Pr. Ac. N. Sci. Phila., XII, 1868, p. 150; *J1. Ac. N. Sci. Phila., VI, 1868, p. 323, pl. Lin, fig. 136; *Obs., XII, 1869, p. 83, pl. L111, fig. 136. * Margaron (Unio) prunoides LEA, Syn., 1870, p. 47. South Ameriea. ? tDIPLODON BESKEANUS Dunker. *Unio beskeanus DUNKER, Zeits. fiir Mal., V, 1848, p. 182.2 * Margaron ( Unio) beskeanus Lea, Syn., 1870, p. 61. Brazil. 1Credited to Dunker Manuscript. 2There is a specimen in the Lea collection contributed under this name by Dunker himself. It is near locellus and suavidicus. I do not know that it has ever been figured. 876 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. f s +DIPLODON LOCELLUS Lea. *Unio locellus LEA, Pr. Ac. N. Sci. Phila., X, 1866, p. 34; *J1.Ac.N. Sci. Phila., VI, 1868, p. 264, pl. Xxx1UJ, fie. 79; *Obs., XII, 1869, p. 24, pl. xxxm1, fig. 79. * Margaron (Unio) locellus Lua, Syn., 1870, p. 47. Argentina. tDIPLODON SUAVIDICUS Lea. * Unio suavidicus LEA, Pr. Ac. N. Sci. Phila., VIII, 1856, p.95; *Obs., VI, 1857, p. 29, pl. xx1x, fig. 24; *J1. Ac. N. Sci. Phila., III, 1898, p. 309, pl. xxix, fig. 24. * Margaron (Unio) suavidicus La, Syn., 1870, p. 54. Amazon. +DIPLODON BROWNII Lea. * Unio brownit Lea, Pr. Ac. N. Sci. Phila., VIII, 1856, p.95; *Obs., VI, 1857, p. 27, pl. XxIx, fig. 22; *Jl. Ac. N. Sci. Phila., III, 1858, p. 307, pl. xx1x, fig. 22. * Margaron (Unio) brownti LEA, Syn., 1870, p. 61. South America?. Dr. Lea reports it from Mocha, Asia (with a ques- tion), which is certainly an error. + DIPLODON LEAI Simpson.! * Margarita ( Unio) modestus L¥A, Syn., 1836, p. 32; 1838, p. 22. * Margaron (Unio) modestus LEA, Syn., 1852, p. 33; 1870, p. 54. * Unio modestus H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 493. Brazil. : +tDIPLODON RHUACOICUS d’Orbigny. * Unio rhuacoica D’ORBIGNY, Guer. Mag., 1835, p.35; * Voy. Am. Mer., 1843, p. 606, pl. LXIX, figs. 4, 5. * Margaron ( Unio) rhuacoicus LEA, Syn., 1870, p. 54. * Unio rhyacoicus VON MARTENS, Mal. B1., XV, 1868, p. 195. * Monocondylea rhyacaeca P&TEL, Conch. Sam., III, 1890, p. 147. Uruguay. tDIPLODON CHARRUANUS 4d Orbigny. * Unio charruana D’ORBIGNY, Guer. Mag., 1835, p. 35; Voy. Am. Mer., 1843, p. 606, pl. LxXxI, figs. 8-14. described by that author or anyone else. In 1856 Kuster properly described and figured a species in the Conchylien Cabinet (Vol. Unio, p. 147, pl. x11n, fig.2) under the name of Unio modestus, which he credits to Charpentier’s manuscript, a different shell from that referred to by Lea and the Adams brothers. If the latter was never described the name modestus can not be used for it, as it was first properly applied to another species. The shells in Lea’s collection may be described as follows: Shell smalJ, subrhomboid, rather solid; beaks full with radial sculpture, the two middle bars coalescing; surface faintly concentrically sculptured, dark olive; two com- pressed pseudocardinals in each valve which are strongly obliquely striated; two laterals in the left valve and one in the right; anterior muscle scars distinct; nacre bluish; beak cavities shallow. Length 28, height 17, diameter 13 mm. =i NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. S77 * Margaron (Unio) charruanus LEA, Syn., 1852, p. 29; 1870, p. 54. *Unio charruanus H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 493.—* Sowmrsy, Conch. Icon., XVI, 1868, pl. xciu, figs. 505, 505a, 505b.—* ParEL, Conch. Sam., III, 1890, p. 147. *Unio faba D’ORBIGNY, Mag. Zool., 1835, p. 35.—* HANLEY, Test. Moll., 1842, p. 197.—* D’ORBIGNY, Voy. Am. Mer., 1843, p. 606, pl. LXx1, figs. 8-11.—* Han- LEY, Biv. Shell, 1843, p. 197.—*CatLow and REEVE, Conch. Nom., 1845, p. 58.—*H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 494.—* Pare, Conch. Sam., III, 1890, p. 152. * Margarita (Unio) faba LEa, Syn., 1838, p. 21. *Margaron (Unio) faba LEA, Syn., 1852, p. 31; 1870, p. 50. Uruguay. DIPLODON CAIPIRA von Ihering. *Unio caipira VON IHERING, Arch. fiir. Nat., 1893, p. 98, pl. 1v, fig. 9.—* NEHRING, J1. de Conch., 1894, p. 83. Southern Brazil. t DIPLODON PICEUS Lea. *Unio piceus LEA, Pr. Ac. N. Sci. Phila., IV, 1860, p. 91; *Jl. Ac. N. Sci. Phila., V, 1863, p. 397, pl. XI, fig. 287; *Obs., X, 1863, p. 15, pl. x11, fig. 287. * Margaron (Unio) piceus LEA, Syn., 1870, p.53. * Unio suppositus VON IHERING (according to von Ihering), where is it described? Uruguay River, South America. + ? DIPLODON WAGNERIANUM Simpson.! *Unio ellipticus WAGNER, Test. Fluv. Bras., 1827, p. 33, pl. xxv1, figs. 1, 2.—* H. and A. ADAMS, Gen. Rec. Moll., I, 1857, p. 497.—* KustTEr, Conch. Icon. Unio, 1861, p. 238, pl. Lx xx, fig. 2.—* SowERBY, Conch. Icon., XVI, 1868, pl. Lxx1v, fig. 382.—* Pare, Conch. Sam., III, 1890, p. 151. *Margaron (Unio) ellipticus LEA, Syn., 1852, p. 21; 1870, p. 31. Brazil. + DIPLODON AZTHIOPS Lea. '*Onio ethiops LEA, Pr. Ac. N. Sci. Phila., IV, 1860, p. 91; *Jl. Ac. N. Sci. Phila., V, 1863, p. 377, pl. xi. fig. 285; Obs., X, 1863, p. 13, pl. xLI, fig. 285.—* von Martens, Mal. B1., XVI, 1868, p. 196. * Margaron (Unio) ethiops LEA, Syn., 1870, p. 53. DIPLODON 4ZTHIOPS var. PIRICICABANA von Ihering. *Unio ethiops, LBA, var. piricicabana VON IHERING, Arch. fiir Nat., 1893, p.102.— * NEBRING, J]. de Conch., 1894, p. 83. Uruguay and Paraguay rivers; southern Brazil. 1Barnes applied the name Unio ellipticus in 1823 to a species which is believed to be Unio ligamentinus. Wagner placed this shell in the genus Unio in the text, but Spix called it Diplodon ellipticum in the plate. J therefore change the name to wagnerianum. Ihave never seen a shell that just agrees with his figure. It is near ethiopiformis von Ihering. 878 PROCEEDINGSOR\THE NATIONAL MUSEUM. VOL. XXII. : + DIPLODON DIVARIUATUS Lea.! *Unio divaricatus LEA, Tr. Am. Phil. Soc., V, 1834, p. 64, pl. rx, fig. 24; *Obs., I, 1834, p. 176, pl. 1x, fig. 24.—* HaNLEY, Test. Moll., 1842, p. 197; ~ Biv. Shells, 1843, p. 197, pl. xx1u, fig. 36.—* CaTLow and REEVE, Conch. Nom., 1845, p. 58.—* H. and A. Apams, Gen. Rec. Moll., Il, 1857, p. 494.—* JickrELi, Faun. Moll. N. O. Af., 1874, p. 280.—* PHTEL, Coneh. Sam., ITI, 1890, p. 151. *Margarita (Unio) divaricatus LEa, Syn., 1836, p. 29; 1838, p. 21. * Margaron (Unio) divaricatus LEA, Syn., 1852, p. 31; 1870, p. 49. South America. {DIPLODON BINNEYI Lea.? * Unio binneyt Lea, Pr. Am. Phil. Soc., IV, 1845, p. 166; *Tr. Am. Phil. Soc., X, 1848, p.77, pl.vi, fig. 18; *Obs., IV, 1848, p. 51, pl. vi, fig. 18.—* Conrap, Pr. Ac.N. Sci. Phila., VI, 1853, p. 245.—* H. and A. ADAMS, Gen. Ree. Moil., II, 1857. p.493.—* B. H. Wrieut, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 146. * Margaron (Unio) binneyi LEA, Syn., 1852, p. 29; 1870, p. 46. South America. (Group of Diplodon granosus.) Shell elliptical to subtrapezoidal, somewhat compressed, rather thin, beaks low, the sculpture irregularly radial, the ridges narrow and sharp, separated by wide, trough-like spaces, the outer in particular often becoming somewhat nodulous or corrugated, the inner approaching and united below; surface sometimes slightly concentrically ridged and eranose; teeth delicate, compressed ; nacre bluish.’ Animal unknown. +DIPLODON GRANOSUS Bruguiere. *Unio granosa BRUGUIER®, Jl. de Hist. Nat., 1, 1792, p. 107, pl. vi, figs. 3, 4.—- *LaMaRrck, An. sans Vert., VI, 1819, p.79.—* DEsHAyYeEsS, Enc. Meth., II, 1827, p. 151, pl. ccxuix, fig. 2. * Unio granosus HANLEY, Test. Moll., 1842, p.182; * Biv. Shells, 1843, p. 182, pl. xxi, fig. 21.—* CaTLow and REEVE, Conch. Nom., 1845, p.59.—* H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 496.—* DrougET, Moll. Guyane, 1859, p. 86. 'Credited by Lea to Egypt, but no doubt a South American species, as it has regular radial beak sculpture and appears to belong with this group. 2Dr. Lea believes that this shell came from Alabama, but it certainly did not. It ‘is undoubtedly a Scuth American form. The type, the only shell I have seen is dead and in bad condition; but the beaks have radial sculpture, and I think it be- longs here. 3No wide distinction exists between this and the preceding group, and there are species which might be assigned about as easily to one as the other. In general the forms of this division are more delicate, thinner, and more compressed than those of the Delodontus group. There are few clear characters in any of the species. Philippi and others have, it seems to me, unduly multiplied names for these forms, and the lack of suitable material and their extrere simplicity and similarity make it impos- sible for me to always determine which are valid. The synonymy is in bad shape, but I have done the best I could at straightening it out. : No. 1205. SYNOPSIS OF THE N‘1TA. S—SIMPSON. 879 *Margarita ( Unio) granosus a, Syu., 1856, p. 17; 1838, p. 16. *Margaron (Unio) granosus LEA, Syn., 1852, p. 23; 1870, p. 34. ~Unio multistriatus LEA,! Tr. Am. Phil. Soc., IV, 1831, p. 91, pl. x11, fig. 22; *Obs. I, 1834, p. 101, pl. xi, fig. 22.—* HANLEY, Test. Moll., 1842, p. 176; ~Biv. Shells, 1843, p. 176, pl. xx, fig. 35.—*CaTLow and ReEEve, Conch. Nom., 1845, p. 61.—* CHENU, III. Conch., 1858, pl. x1, figs. 2, 2a, 2b.—* SowERsBy, Conch. Icon., XVI, 1868, pl. LXxxv, fig. 455.—*PaTEL, Conch. Sam., III, 1890, p. 160. * Margarita ( Unio) multistriatus LEA, Syn., 1836, p. 13; 1838, p. 14. * Unio multistriata D’ORBIGNY, Voy. Am. Mer., 1843, p. 607. * Unio pfeifferi DUNKER, Zeits. fiir Mal., V, 1848. p. 181.—* PFEIFFER, Nov. Conch., II, 1866, p. 151, pl. xxxIXx, figs. 4-9.—* Pa TEL, Conch. Sam., ITI, 1890, p. 165. *Unio psammactinus Puivipri, Conch., III, 1848, p. 79, pl. v, fig. 2.—* KusTEr, . Conch. Cab. Unio, 1856, p. 159, pl. xiv, fig. 6.2—* VON MARTENS, Mal. BL., XV, 1868, p. 194. *+Unio famelicus GOULD, Pr. Bost. Soc. N. Hist., III, 1850, p. 294;3 U. S. Expl. Exp., XII, 1852, p.432, figs. 544, 544a, 544b.—* ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 249.—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p. 493.— * GOULD, Otia. Conch., 1862, p. 88.—* SowERBY, Conch. Icon., XVI, 1868, pl. LXXxV, fig. 391.—* B. H. Wricut, Check List, 1888. * Margaron (Unio) famelicus Lea, Syn., 1852, p.34; 1870, p. 54. *Unio niloticus SOWERBY, Conch. Icon., XVI, 1868, pl. Lx x11, fig. 374. Brazil; Guiana. DIPLODON GRANULIFERUS Dunker. *Unio granuliferus DUNKER, Zeits. fiir Mal., V, 1848, p. 182.—* Preirrrr, Nov. Conch., II, 1866, p. 150, pl. xx xIx, figs. 1-3. *Unio granulifer P&TEL, Conch. Sam., ITT, 1890, p. 154. Province of Rio de Janeiro, Brazil. + DIPLODON EFFULGENS Lea. * Unio effulgens Lea, Pr. Ac. N. Sci. Phila., VIII, 1856, p.94; “JI. Ac. N. Sci. Phil., III, 1857, p. 303, pl. xx vill, fig. 18; *Obs., VI, 1857, p. 23, pl. xxvu1l, fig. 18.— P#TEL, Conch. Sam., III, 1890, p. 151.—*von InERinG, Arch. fiir Nat., 1893, p. 106. *Margaron ( Unio) effulgens Lea, Syn., 1870, p.-35. *Unio eurhynchus KUSTER, Conch. Cab. Unio, 1861, p. 237, pl. Lxx1x, fig. 5.— *Pa&TEL, Conch. Sam., III, 1890, p. 152. 2razil. ‘The type presented by Mrs. Mawe is not in the Lea collection, but there are fairly typical examples init. The species varies much in form and sculpture, some specimens being smooth, and all variations occur to those quite granose throughout. Lea places his species in the synonymy U. ellipticus Spix, which I think is an error. The type of multistriatus is more elongated than tke figure of U. granosus in the Encyclopedie Méthodique, but agrees very well with undoubted specimens cf this species which I have seen. 2Credited by Kuster to Broun in litt. 3Credited by Gould to Walla Walla, Oregon. Itis a young, rather smooth granosus I am sure, and the habitat given is wrong. The type isin the U.S. National Museum. 880 PROCEEDINGS OF THE NATIONAL MUSEUM, VOL, XXII. +DIPLODON RUFOFUSCUS Lea. “Unio rufofuscus La, Pr. Ac. N. Sci. Phila., IX, 1865, p.76; *Jl. Ac. N. Sci. Phila., VI, 1868, p. 282, pl. xxx1Xx, fig. 96; *Obs., XII, 1869, p. 42, pl. xxxIx, fig. 96. * Maragon ( Unio) rufofuscus LEA, Syn., 1870, p. 31. South America. DIPLODON DEMARARAENSIS Lea. *Unio demararaensis Lra, Pr. Ac. N. Sci. Phila., III, 1859, p. 152; “Jl. Ac. N. Sci. Phila., IV, 1860, p. 253, pl. Xxx1rx, fig. 133; *Obs., VII, 1860, p. 71, pl. XxxIx, fig. 133.—*REEVE, Conch. Icon., XVI, 1865, pl. xxi, fig. 99. * Maragron (Unio) demararaensis Lea, Syn., 1870, p. 36. * Unio demararaensis Pa&TEL, Conch. Sam., III, 1890, p. 150. Demerara. + DIPLODON LEPIDIOR Lea. *Unio lepidus Lwa,! Pr. Ac. N. Sci. Phila., IV, 1860, p. 91; * Jl. Ac. N. Sci. Phila., V, 1863, p. 390, pl. u, fig. 306; *Obs., X, 1863, p. 25, pl. L, fig. 306. * Margaron (Unio) lepidior LEA, Syn., 1870, p. 53. - Uruguay River. tDIPLODON PARCUS Lea. * Unio parcus Lea, Pr. Ac. N. Sci. Phila., X, 1866, p. 34; *J1. Ac. N. Sci. Phila., VI, 1868, p. 262, pl. Xxx x1Ul, fig. 77; * Obs., XII, 1869, p. 22, pl. xxx, fig. 77. * Margaron (Unio) parcus Lea, Syn., 1870, p. 47. South America. +DIPLODON CHILENSIS Gray. * Unio chilensis GRAY, Spic. Zool., 1828, pl. v1, fig. 12.—* PuiLipri, Conch., III, 1847, p-9, pl. iv, fig. 2.—* Hupz, Gay’s Hist. Chile, VIII, 1854, p. 317. H. and A. ApAms, Gen. Rec. Moll., II, 1857, p. 497.—* KusTER, Conch. Cab. Unio, 1862, p. 282,pl. xev, fig. 12.—* SowERBY, Conch. Icon., XVI, 1867, pl. LVI, fig. 286.— *PaTEL, Conch. Sam., III, 1890, p. 148. * Unio smithii GRayY and PIDGEON, Griff. Cuv., XII, 1834, p. 600, pl. xx, fig. 3.2— * HANLEY, Biv. Shells, 1843, p. 195, pl. xx11, fig. 58.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 495.—* Pa TEL, Conch. Sam., III, 1890, p. 167. * Margarita (Unio) smithit LEA, Syn., 1836, p. 27; 1838, p. 20. * Margaron (Unio) smithii Lma, Syn., 1852, p. 30; 1870, p. 48. * Unio auratus PuiLipri, Conch., II, 1847, p. 9, pl. rv, fig. 1.2—* H. and A. ADaMs, Gen. Ree. Moll., II, 1857, p. 492.—* PasTEL, Conch. Sam., III, 1890, p. 145. *Margarita (Unio) auratus LEA, Syn., 1836, p. 31; 1838, p. 22. *Margaron (Unio) auratus Lua, Syn., 1852, p. 33; 1870, p. 53. * Unio araucanus PuiLipri, Conch., III, 1847, p. 50, pl. rv, fig. 3.—* KusTER, Conch. Cab. Unio, 1862, p. 288, pl. xcv, fig. 3. * Margaron (Unio) araucanus LEA, Syn., 1870, p. 53. *Unio araucana HuPE, Gay’s Hist. Chile, 1854, p. 317. Chile. ' Changed to lepidior because the name lepidus had been used for a Unio by Gould. 2Only the briefest description is given of this in the index. From the figure it seems to be identical with chilensis. 3 Generally credited to Swainson, and Philippi refers it to him with doubt. ButI can not find that Swainson ever published it. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 881 DIPLODON SOLIDULUS Philippi. “Unio solidulus PHiLiprt, Mal. Bl., XVI, 1869, p. 46.—* PFEIFFER, Noy. Conch., III, 1869, p. 480, pl. cut, figs. 9, 10.--* Parr, Conch. Sam., ILI, 1890, p. 168. Near Santiago; Chile. DIPLODON GASSIESI Kuster. *Unio gassiesi KUSTER(part), Conch. Cab. Unio, 1856, p. 148, pl. xu, fig. 4.! *Unio auratus REEVE, Conch. Icon., XVI, 1865, pl. xxx, fig. 150. Chile. DIPLODON APLATUS Reeve.? *Unio aplatus REEVE, Conch. Icon., XVI, 1865, pl. xxvul, fig. 143.-—* PacrEt, Conch. Sam., ITI, 1890, p. 144. . Island of Chiloe, Chile. tDIPLODON MOLINZ Philippi. *Unio moline Puriiprt, Conch., III, 1847, p. 50, pl. 1v, fig. 4.—*Hupr, Gay’s Hist. Chile, VIII, 1854, p. 316.—* Kuster, Conch. Cab. Unio, 1862, p. 281, pl. xcv, fig. 1.—* P&TEL, Conch. Sam., ITI, 1890, p. 159. * Unio auratus SOWERBY, Conch. Icon., XVI, 1866, pl. XLv, fig. 245.3 Southern Chile. tDIPLODON MODESTUS Kuster.‘ * Unio modestus KUSTER, Conch. Cab. Unio, 1856, p. 147, pl. xu, fig. 2. * Unio ianthinus Puttrppl, Mal. B1., XVII, 1869, p. 47.—* PreirrEr, Nov. Conch., III, 1869, p. 485, pl. crv, figs. 11, 12.—*P arr, Conch. Sam., ITI, 1890, p. 155. *Unio valdivanus PuiipPt, Mal. Bl., XVI, 1869, p. 48.—* PFEIFFER, Nov. Conch., III, 1869, p. 479, pl. cut, figs. 7, 8. “Unio montanus Puiuippt, Mal. Bl., XVI, 1869, p. 48.—* PrErrrer, Nov. Conch., III, 1869, p. 482, pl. crv, figs. 3, 4.—* PasTEL, Conch. Sam., III, 1890, p. 159. Chile. +DIPLODON ATRATUS Sowerby. * Unio atratus SOWERBY, Conch. Man., 1839, fig. 148.° “Unio limensis KUSTER, Conch. Cab. Unio, 1856, p. 146, pl. xin, fig. 7; XL11, fig. 1.— *PaTEL, Conch. Sam., ITI, 1890, p. 157. * Unio jacobeus PHILIPPI, Mal. Bl., XVI, 1869, p. 44.—* PreirreEr, Nov. Conch., III, 1869, p. 478, pl. cri, figs. 3, 4.—* Paw TEL, Conch. Sam., ITI, 1890, p. 155. * Unio landbecki Putxiprt, Mal. Bl., XVI, 1869, p. 45.—* PrEIFrFrER, Nov. Conch., III, 1869, p. 479, pl. cru, figs. 5, 6.—* Paw Tex, Conch. Sam., ITT, 1890, p. 156. ‘Kuster figures two species, I think, for gassiesi. His fig. 3 is, I think, a young molinew Kuster; fig. 4 seems to equal auratus of Reeve, not of Philippi or Sowerby. ?Swainson.manuscript according to Reeve. 3Not U. auratus of Reeve, figured previously in tha same work. 4Credited to Charpentier manuscript by Kuster. See foot note on Diplodon leat Simpson, p. 876. 5Not Unio (Niaa) atrata Swainson, which equals Unio gracilis Barnes. Sowerby’s name has precedence. Proce. N. M. vol. xxii 56 882 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XSI. * Unio diplodon PHiviprPt, Mal. B1., XVI, 1869, p. 46.—* PremrEr, Nov. Conch., III, 1869, p. 483, pl. crv, figs. 7, 8.—* Pa rer, Conch. Sam., III, 1890, p. 150. *t Unio dunkerianus Lea, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 94; *Obs., VI, 1857, p. 25, pl. xxin, fig. 20; *J1. Ac. N. Sci. Phila., III, 1858, p. 303, pl. xxvii, fig. 20.—* KustTER, Conch. Cab. Unio, 1862, p. 290, pl. xc, fig. 6.—* SOWERBY, Conch. Icon., XVI, 1868, pl. xc, fig. 485.—* PaernL, Conch. Sam., III, 1890, p. 151.—* von IHERING, Arch. fiir Nat., 1893, p. 109. * Margaron (Unio) dunkerianus LEA, Syn., 1870, p. 32. Peru; Chile. i —— ee ee, oe ee ee eee DIPLODON OBTUSUS @Orbigny. * Unio obtusa D’ORBIGNY,! Guer. Mag., 1835, p.35; * Voy. Am. Mer., 1843, p. 610.— * HuPE, Gay’s Hist. Chile, VIII, 1854, p. 316. Chile. DIPLODON RHUACONICUS Kuster.? * Unio rhuaconicus KUSTER, Conch. Cab. Unio, 1856, p. 145, pl. xu, fig. 5. Brazil. +DIPLODON CHILOENSIS Kuster. *Unio chiloénsis KUSTER, Conch. Cab., 1856, p. 161, pl. xxxv, fig. 6.—* Paurut, Conch. Sam., III, 1890, p. 148. Island of Chiloe, Chile. + DIPLODON CASA®BLANCZ Philippi. *Unio caseblance PHILIPPI, Zeits. fiir Mal., V, 1848, p. 176. *Unio casablancw PFEIFFER, Nov. Conch., III, 1869, p. 481, pl. crv, figs. 1, 2.— * PATEL, Conch. Sam., III, 1890, p. 147. * Margaron ( Unio) casablance LEA, Syn., 1870, p. 53. *Unio longus Puiuipri, Mal. BIl., XVI, 1869, p. 44.—* PremrrEr, Noy. Conch., III, 1869, p. 477, pl. cr, figs. 1, 2.—* Pare, Conch. Sam., III, 1890, p. 158. * Unio colchaguensis PHILIPPI, Mal. Bl., XVI, 1869, p. 47.—* PrEirrErR, Nov. Conch., III, 1869, p. 484, pl. crv, figs. 9, 10.—* Pare, Conch. Sam., IIT, 1890, p. 148. * Unio foncki PHILIPPI, Mal. Bl., XV, 1869, p. 49.—~ PreirrEer, Nov. Conch., III, 1869, p. 483, pl. crv, figs. 5, 6. * Unio funcki Pa&TEL, Conch. Sam., III, 1890, p. 153. Chile. DIPLODON FRENZELLII von Ihering. * Unio frenzelliti VON IHERING, Arch. fiir Nat., 1893, p. 3, pl.rv., fig. 12. Patagonia and Chile. DIPLODON MARTENSI von Ihering. *Unio martensi VON IHERING, Arch. fiir Nat., 1893, p, 100, pl. rv, fig. 10. Southern Brazil. 1Said by d@’Orbigny to be of Ferussac, but he does not say where that author described it, and I do not know where. This name has been used for at least four different species of Unionidw: As above; in Cuvier’s Animal Kingdom (edition with- out date); for Unie retusus, by Potiez and Michaud; and by Dr. Lea. I presume that WVOrbigny is entitled to the name. 2Kuster credits this to ‘‘ Pfeiffer teste Charpentier.” Ido not know what it is. It is very different from d’Orbigny’s rhuacoica. NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. §83 + DIPLODON CUPRINUS Simpson. “Unio fragilis SowERBY,! Conch. Icon., XVI, 1856, pl. Xxx, fig. 155 Island of Chiloe, Chile. DIPLODON AUREUS Simpson. *Unio auratus KUSTER, Conch. Cab. Unio,1856, p. 161, pl. xLVv1, fig. 3.2 Chile. DIPLODON CORIACEUS Dunker. * Unio coriaceus DUNKER, Zeits. fiir. Mal., V, 1848, p. 181.—* VON IHERING, Arch. fiir Nat., 1893, p. 115. Rio Negro, Province of Rio Janeiro, Brazil. DIPLODON CHILDRENI Gray. * Unio childreni GRAY, Griff. Cuy., XII, 1834, p. 600 (index), pl. xx, fig. 1.—* Car- LOW and REEVE, Conch. Icon., 1845, p. 57.—* H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 493.—* Pare, Conch. Sam., III, 1890, p. 148. Margarita (Unio) childrent Lea, Syn., 1836, p. 25; 1838, p. 19. *Margaron (Unio) childrent Lea, Syn., 1852, p. 28; 1870, p. 44. South America. (Group of Diplodon burroughianus.) Shell elliptical, mederately solid, inflated, sharply pointed behind, with a high, well-developed posterior ridge; beaks rather full; the sculpture consisting of regularly radiating, widely separated, sharp ridges, the intervening grooves rounded out; «pidermis smooth, dark olive with lighter bands; pseudocardinals compressed, rough, vertically ridged, usually trifid or quadrifid in each valve; laterals curved, com- pressed, muscle scars smooth; nacre white, silvery. Animal unknown. + DIPLODON BURROUGHIANUS Lea. * Unio burroughienus, Lea, Tr. Am. Phil. Soc., V, 1834, p. 67, pl. x, fig. 27; * Obs., I, 1834, p. 179, pl. x, fig. 27.—* p’ORBIGNY, Guer. Mag., ] * HANLEY, Test. Moll., 1842, p. 197; * Biv. Shells, 1843, p.197, pl. xxu1, fig. 2.—* p’ORBIGNY, Voy. Am. Mer., 1843, p. 609.—* CaTLow and REEVE, Conch. Nom., 1845, p. 56.— *H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 493.—* SowrRBy, Conch. Icon., XVI, 1866, pl. xxxu1, fig. 169.—* Pa Tex, Conch. Sam., IIT, 1890, p. 146. * Margarita (Unio) burroughianus, Lea, Syn., 1836, p. 29; 1838, p. 21. * Margaron (Unio) burroughianus, LEA, Syn., 1852, p.31; 1870, p. 50. Parana River, South America. ‘ 1 Sowerby’s name being preoccupied in Unio, I change it to cuprinus, which has not been used in Diplodon. The date, 1856 on the plate, is perhaps a typographical error for 1866. 2The name auratus is preoccupied in Unio, by Philippi in the Conehyaicr: This being a different species, I change it to awreus. 884 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. + DIPLODON TRIFIDUS Lea. * Unio trifidus, LHa, Pr. Ac. N. Sci. Phila., IV, 1860, p.89; * Jl. Ac. N. Sci. Phila., V, 1863, p. 386, pl. xiv, fig. 295; * Obs., X, 1863, p. 22, pl. XLIVv, fig. 295. * Margaron (Unio) trifidus, Lua, Syn., 1870, p. 50. Argentina. (Group of Diplodon pazi.) Shell subtrapezoidal, rounded in front and strongly biangulate behind, the wavy beak sculpture extending well over the disk; epidermis olive; pseudocardinals ragged, with a tendency to break into denticles. ‘DIPLODON PAZI Hidalgo. * Castalia pazi HipaLGo, Jl. de Conch., XVI, 1868, p. 353, pl. x10, fig. 6.—* PasTEL, Conch. Sam., III, 1890, p. 189. : Imbabura, Ecuador. DIPLODON HYLAAUS 4d’Orbigny. * Unio hylwa D’ORBIGNY, Guer. Mag., 1835, p.36; * Voy. Am. Mer., 1843, p. 607, pl. LXIX, figs. 8, 9. * Margaron (Unio) hyleus Lea, Syn., 1852, p. 21; 1870, p. 31. * Unio hyleus H. and A. ApAMs, Gen. Rec. Moll., II, 1857, p.497.—* SowErry, Conch. Icon., XVI, 1868, pl. xc111, fig. 506.—* Pa TEL, Conch. Sam., IIT, 1890, p. 155. * Unio guaraniana D’ORBIGNY, Guer. Mag., 1835, p. 37; *Voy. Am. Mer., 1843, p. 608, pl. LXIx, figs. 10-12. Bolivia; Paraguay liver. (Group of Diplodon parallelipipedon.) Shell elongated, subtrapezoidal, inflated, obliquely truncated behind; posterior ridge strong; beaks rather low, scuipture of nearly or quite strictly radial bars with concave spaces between; epidermis dark; pseu- docardinals compressed in the young, granular, vertically striate and breaking into denticles in the old shell; laterals long,curved, granular, often vertically striate; anterior scars smooth, distinct. +tDIPLODON PARALLELIPIPEDON Lea. * Unio parallelipipedon Lua, Tr. Am. Phil. Soc., V, 1854, p. 60, vl. vill, fig. 20; *Obs., I, 1834, p. 172, pl. vi, fig. 20.—* p’ORBIGNY, Guer. Mag., 1835, p. 34.— *HANLEY, Test. Moll., 1842, p. 205; Biv. Shells, 1843, p. 205.—* D’ORBIGNY, Voy. Am. Mer., 1843, p. G09.—* CaTLOw and REEVE, Conch. Nom., 1845, p. 62.— *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 491.—* KustrEr, Conch. Cab. Unio, 1861, p. 220, pl. Lx xiv, fig. 2.—* SOWERBY, Conch. Icon., XVI, 1868, pl. LXXXIX, fig. 478.—* Pare, Conch. Sam., III, 1890, p. 162. * Margarita (Unio) parallelipipedon LEA, Syn., 1836, p.35; 1838, p. 24. * Margaron (Unio) parallelipipedon LEA, Syn., 1852, p.56; 1870, p. 58. ? Unio bonplandi VALENCIENNES, in continuation of Humboldt’s Zool. Obs., 1827.1 Rio de la Plata system. ' According to Lea. I have not seen this paper, and Lea does not cite the page. A specimen with the above label from the Morelet collection= parallelipipedon Lea. “| i oe ee No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 885 +DIPLODON PATAGONICUS 4d’Orbigny. * Unio patagonica D’ORBIGNY, Guer. Mag., Ee p- 37; * Voy. Am. Mer., 1843, p. 610, pl. LXX, figs. 1-4. * Margarita ( Unio) patagonicus LEA, Syn., 1838, p. 25. * Unio patagonicus HANLEY, Test. Moll., 1842, p. 208; * Biv. Shells, 1843, p. 298, pl. xxu1, fig. 16.—* Oanrow and ges, Conch. Nome 1845, p. 62.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 461.—* REEVE, Conch. Icon., XVI, 1865, pl. xx1, fig. 93.—* STROBEL, Mat. Mal., Pt. 1, 1874, p. 72.—* Pte, Conch. Sam., III, 1890, p. 162. * Margaron ( Unio) patagonicus LEA, Syn., 1852, p. 38; 1870, p. 61. Patagonia. +DIPLODON ACUTIROSTRIS Lea. *Unio acutirostris Lea, Pr. Ac. N. Sei. Phila., X, 1866, p. 34; * Jl. Ac. N. Sci. Phila., VI, 1868, p. 270, pl. xxxv, fig. 84; * Obs., XIII, 1869, p. 30, pl. xxxv, fig. 84. * Margaron (Unio) acutirostris LeA, Syn., 1870, p. 58. South America. (Group of Diplodon quadrans.) Shell subtrapezoid, slightly truncate in front, nearly equilateral, greatly inflated, its greatest diameter below the beaks, from which it is wedge-shaped in front and behind, solid, with a decidedly rounded posterior ridge; epidermis brownish, concentrically striate, beaks full but not high, ligament long and slender; pseudocardinals large, com- pressed, striate and crenulate, double in the right valve, single in the left; laterals curved, crenulate; beak cavities rounded; anterior cica- trices deep, confluent; nacre white. Animal unknown. DIPLODON QUADRANS Lea.! “Unio quadrans LEA, Pr. Ac. N. Sci. Phila., IV, 1859, p. 306; *Jl. Ac. N. Sci. Phila., 1V, 1860, p. 360, pl. Lx1, fig. 185; *Obs., VIII, 1860, p. 42, pl. Lx1, fig. 185.—* B. H. Wricut, Check List, 1888. * Margaron (Unio) quadrans LEA, Syn., 1870, p. 36. South America (7). Subgenus CYCLOMYA Simpson, 1900. (Type, Unio funebralis Lea.) Shell obovate to suborbicular, narrowed in front, produced just behind the center of the base, generally slightly pointed about the middle of the posterior end, with a scarcely perceptible posterior ridge and a slight dorsal wing behind; beaks high, irregularly radial; hinge line 1 Only one specimen of this shell is reported, this being in the Wheatley collection, and credited to Texas. The beak sculpture is all eroded away, but I am almost sure it is a South American shell, allied, perhaps, to D. apprimus, wruguayensis, and possi- bly to Hupe’s Unio orbignyi. 886 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. strongly arched, curved behind and incurved in front of the beaks; the lower pseudocardinal in the right valve largest, often much split up into denticles, pseudocardinals of the left valve variable, dentellate; two lower anterior scars deep, united, the upper very deep, separate. Animal unknown. Section CYCLOMYA Simpson, 1900. (Type, Unio funebralis Lea.) ’ +DIPLODON GRATUS Lea. * Unio gratus La, Pr. Ac. N. Sci. Phila., IV, 1860, p. 91; *J1. Ac. N. Sei. Phila., V, 1863, p. 382, pl. xLu1, fig. 290; * Obs., X, 1863,p]. XLII, fig. 290.— “SOWERBY, Conch. Icon., XVI, 1868, pl. LXxxIv, fig. 444.—*PaTEL, Conch. Sam., III, 1890, p. 154. * Margaron (Unio) gratus LEA, Syn., 1870, p. 56. Uruguay River, South America. +DIPLODON PATELLOIDES Lea. *Unio patelloides LEA, Pr. Ac. N. Sci. Phila., IV, 1860, p. 89; *~Jl. Ac. N. Sci. Phila., V, 1863, p. 383, pl. xii, fig. 291; *Obs., X, 1863, p. 19, pl. xLin, fig. 291. * Margaron (Unio) patelloides Lea, Syn., 1870, p. 56. Amazon River. + DIPLODON PERZEFORMIS Lea. 7 *Unio pereformis LEA, Pr. Ac. N. Sci. Phila., IV, 1860, p. 90; *J1. Ac. N. Sci. Phila., V, 1863, p. 384, pl. xu, fig. 292; *Obs., X, 1863, p. 20, pl. XLin, fig. 292.—* SOWERBY, Conch. Icon., XVI, 1868, pl. LXxxtv, fig. 443.—*P TEL, Conch. Sam., III, 1890, p. 163. *Margaron (Unio) pereformis LEA, Syn., 1870, p. 55. Uruguay River, South America. +DIPLODON FONTAINIANUS d’Orbigny. * Unio fontainiana D’ORBIGNY, Guer. Mag., 1835, p. 36. *Unio fontainianus HaNLEY, Biv. Shells, 1856, p. 384, pl. x x1, fig. 27.—* SOWERBY, Conch. Icon., XVI, 1868, pl. Lxxxvu, fig. 466.—* Pare, Conch. Sam., III, 1890, p. 153.—* voN IMERING, Arch. fiir Nat., 1893, p. 90. *Margaron (Unio) fontainianus Lra, Syn., 1870, p. 56. *Unio fontaineana D’ORBIGNY, Voy. Am. Mer., 1843, p. 605, pl. LXIx, figs. 6, 7.— *Huper, Anim. Nouv., 1857, p. 82. Parana River, southern Brazil. +DIPLODON ROTUNDUS Wagner. *Unio rotundus WAGNER,' Test. Fluv. Bras., 1827, p. 34, pl. xxv, figs. 3, 4.— *MORICAND, Mem. His. Soc. Gen., 1838, p. 49, -pl.1v, figs. 12-14.—* KUSTER, Conch. Cab. Unio, 1856, p. 160, pl. xLv1, figs. 1,2.—* SoweRBy, Conch. Icon., XVI, 1868, pl. Lxxu, fig. 369.—P #TEL, Conch. Sam., III, 1890, p. 166. *Margaron (Unio) rotundus Lea, Syn., 1870, p. 56. Brazil. — 1 Diplodon rotundum Spix in explanation of plate. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 887 +DIPLODON DISCULUS Lea. * Unio disculus, LEA, Pr. Ac. N. Sci. Phila., IV, 1860, p. 91; *J1. Ac. N. Sci. Phila., V, 1863, p. 385, pl. XIV, fig. 293; * Obs., X, 1863, p. 21, pl. xxrv, fig. 293. * Margaron Unio disculus LEA, Syn., 1870, p. 55. : Uruguay River, South America. tDIPLODON FUNEBRALIS Lea. “ Unio funebralis Lua, Pr. Ac. N. Sci. Phila., IV, 1860, p. 91; * Jl. Ac. N. Sci. Phila., V, 1863, p. 378, pl. XI, fig. 286; *Obs., X, 1863, p. 14, pl. x11, fig. 286.— *“SOWERBY, Conch. Icon., XVI, 1867, pl. Lyi, fig. 290.—* PasrEL, Conch. Sam., III, 1890, p. 153. * Margaron Unio funebralis Lea, Syn., 1870, p. 55. Uruguay River. , tDIPLODON PARANENSIS Lea. * Unio paranensis LEA, Tr. Am. Phil. Soc., V, 1834, p. 49, pl. x1v, fig. 42.—* Obs., I, 1834, p. 211, pl. xiv, fig. 42.—*Hantzey, Test. Moll., 1842, p. 202; *Biv. Shells, 1843, p. 202, pl. xx, fig. 3.—*D’ORBIGNY, Voy. Am. Mer., 1843, p. 603.—* CATLOw and REEVE, Conch. Nom., 1845, p. 62.—* H. and A. ADAms, Gen. Rec. Moll., II, 1857, p. 492.—* KusTrr, Conch. Cab., 1861, p. 253, pl. LXXXV, fig. 3.—* SOWERBY, Conch. Icon., XVI, 1866, pl. LI, fig. 268; * PacTEL, Conch. Sam., III, 1890, p. 162. * Margarita (Unio) paranensis LRA, Syn., 1836, p. 33; 1838, p. 23. *Margaron (Unio) paranensis LEA, Syn., 1852, p. 345 1870, p. 55. *t Unio nocturnus Lea, Pr. Ac. N. Sci. Phila., IV, 1860, p. 91; *Jl. Ac. N. Sci. Phila., V, 1863, p. 380, pl. xLu, fig. 288; * Obs., X, 1863, p. 16, pl. XLII, fig. 288. *Margaron (Unio) nocturnus LEA, Syn., 1870, p. 56. Uruguay and Parana rivers. Section BULLOIDEUS Simpson, 1900, (Type, Unio bulloides Lea.) Shell rounded, inflated, thin, nearly equilateral, truncate behind and slightly so before, with a rather sharp posterior ridge and a dorsal wing; beaks full, rather high, regularly radial; epidermis smooth, bronzy olive; pseudocardinals compressed, much elongated, disposed to be split into denticles, two in the right valve and one in the left; laterals two in the left valve and one in the right; dorsal scars few and scattered in the rather shallow cavities; nacre bluish. +DIPLODON BULLOIDES Lea. *Unio bulloides LEA, Pr. Ac. N. Sci. Phila., III, 1859, p. 187; * Jl. Ac. N. Sci. Phila., IV, 1860, p. 264, pl. xxi, fig. 144; *Obs., VII, 1860, p. 82, pl. Lxu, fig. 144.— *KuUSTER, Conch. Cab. Unio, 1861, p. 186, pl. Lx, fig. 2.—*SowERBy, Conch. Icon., XVI, 1868, pl. LXxXxvi1Ml, fig. 275.—* PATEL, Conch.Sam., III, 1890, p. 146. Margaron (Unio) bulloides LEA, Syn., 1870, p. 55. tio de la Plata. +DIPLODON SOLISIANUS d’Orbigny. * Unio solisiana D’ORBIGNY, Guer. Mag., 1835, p. 35; * Voy. Am. Mer., 1843, p. 604, pl. Lxrx, figs. 1-3.—* Sowerby, Conch. Icon., XVI, 1868, pl. xc, fig. 508. 10 de la Plata and its affluents. 888 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. DIPLODON VARIABILIS Maton. * Mya variabilis Maron, Tr. Linn. Soc. Lond., X, 1811, p. 327, pl. xxIv,figs. 4-7.!— * Woop, Gen. Conch., I, 1815, p. 111.—* Dittwyn, Cat., I, 1817, p.53.—* Woop, Ind. Test., 1825, p. 13, pl. 11, fig. 88a; rev. ed., 1856, p. 17, pl. 111, fig. 38. * Unio variabilis D’ORBIGNY, Voy. Am. Mer., 1843, p. 604, pl. Lxx1, figs. 1-3.— *HANLEY, Test. Moll.,1842, p. 202; * Biv. Shells, 1844, p. 202.—* CaTLow and REEVE, Conch. Nom., 1845, p. 65.—*H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 492.—* SowERBY, Conch. Icon., XVI, 1868, pl. Lxxtv, fig. 381.— * STROBEL, Mat. Mal., Pt. 1, 1874, p. 69.—* PaTEL, Conch. Sam., ITI, 1890, pelle * Margarita (Unio) variabilis LEA, Syn., 1836, p. 33; 1838, p. 28. * Margaron (Unio) variabilis LEA, Syn., 1852, p. 35; 1870, p. 56. * Mytilus matoniana D’ORBIGNY, Guer. Mag., 1835, p. 35. * Unio matonianus PATEL, Conch. Sam., III, 1890, p. 158. * 2 Unio membranacea HANLEY, Biv. Shells, 1843, p. 202, pl. xxu1, fig. 6. * Unio membranaceus PHILIPPI, Conch., III, 1848, p. 80, pl. v, fig. 4.—* KusTER, Conch. Cab. Unio., 1862, p. 284, pl. xcv, fig. 5. Rio de la Plata. Subgenus HYRIDELLA Swainson, 1840. (Type, Unio australis Lamarck. ) Beaks rather low, sculpture consisting of curved, generally nodulous ridges, which approach below but usually have a smooth area of shell between them; surface sulcate or sometimes corrugated and nodulous; epidermis rayless; teeth rather delicate, compressed, often somewhat rudimentary. Animal having the embryos occupying the inner gills for the most part,? which are united for their entire length to the abdominal sac; outer gills pointed below in the middle; palpi triangular; branchial opening papillose; anal opening smooth, not separated from the super anal opening. Section HYRIDELLA Swainson, 1840, Shell covered with concentric, suleate sculpture; pseudocardinals well developed, compressed; laterals delicate, sometimes imperfect. (Group of Diplodon dorsuosus.) Shell somewhat rhomboid, inflated solid, with rather full beaks, the sculpture consisting of very strong, subradial, corrugated ridges which curve toward each other below, those in the center sometimes joining, this sculpture extending well out on the disk; upper part of pos- terior slope having slight radial folds. | ‘T feel certain that Maton has illustrated two species, figs. 4, 6, and 7 being nearly circular, with a rather straight hinge, while fig. 5 is a small shell, is much inflated at the posterior base, and is incurved in front of the breaks. He describes the large shell first. The small one may be the young of D. patelloides. 2 According to Suter in a letter. NO. 1205. _ SYNOPSIS OF THE NAIA DES—SIMPSON. 889 t DIPLODON DORSUOSUS Gould. *Unio dorsuosus GOULD, Pr. Bost. Soc. N. H., IIT, 1850, p. 296; * U.S. Expl. Exp., XII, 1852, p. 480, figs. 540, 540a, 540b; * Otia Conch., 1862, p. 89.—*H. and A. ADAMS,Gen. Ree. Moll., II, 1857, p. 497.—*PTEL,Conch. Sam., IIT, 1890, p. 151. * Wargaron (Unio) dorsuosus LEA, Syu., 1852, p. 21. “Unio napeanensis CONRAD, Pr. Ac. N. Sci. Phila., V, 1852, p. 10; “Jl. Ac. N. Sei. Phila., 1854, p. 296, pl. xxv1, fig. 4.—*H. and A. ADAMS, Gen. lec. Moll., II, 1857, p. 498.—* REEVE, Conch. Icon., XVI, 1865, pl. xxi, fig. 2.—* PmTE., Conch. Sam, III, 1890, p. 160. *Margaron ( Unio) napeanensis LEA, Syn., 1852, p. 20; 1870, p. 30. Nepean River, Australia. DIPLODON GLENELGENSIS Dennant. * Unio glenelgensis DENNANT, Pr. Roy. Soc. Vict., X, 1898, p. 112, pl. rv. Glenelg River, Victoria. (Group of Diplodon menziezt.) Shell subrhomboid; beak sculpture not strong, consisting of broken, nodulous ridges curving toward each other below, with generally a smooth space between, not extending over the shell. Animal as in the subgenus. +DIPLODON MENZIEZI Gray. * Unio menziezi GRAY, In Dieffenbach’s N. Z., II, 1848, p. 257.—* ? MusGraveE, Phot. Conch., 1863, pl. u, fig. 1.—*Hurron, N. Z. Moll., 1880, p. 160.—* Parent, Conch. Sam., 1890, p. 159. * Unio menziezianus REEVE, Conch. Icon., XVI, 1865, pl. xxIx, fig. 152. * Margaron (Unio) menzieni LEA, Syn., 1870, p. 46. * Unio aucklandica GRAY, In Dieffenbach’s N. Z., II, 1843, p. 257.—* HuTtTon, N. Z. Moll., 1880, p. 161. *?Unio aucklandicus SOWERBY, Conch. Icon., XVI, 1866, pl. xxx, fig. 156.— *PaTEL, Conch. Sam., III, 1890, p. 145. * Margaron ( Unio) aucklandicus LEA, Syn.,1870, p. 45. +DIPLODON MENZIEZI var. RUGATUS Hutton.! *Unio rugatus HUTTON, Tr. N. Z. Inst., XVI, 1884, p. 216.—*PaTEL, Conch. Sam., III, 1890, p. 166. +DIPLODON MENZIEZI var. HOCHSTELLERI Krauss. “Unio hochstellerti DUNKER, Mal. BI., VIII, 1862, p. 153.—*SowERBY, Conch. Icon., XVI, 1868, pl. LXxxv1, fig. 463.—*HuTTOoN, N. Z. Moll., 1880, p. 161.—*ParE., Conch. Sam., III, 1890, p. 155.2 1The name rugatus was applied previously to a European Unio by Rossmassler; but it may be used as a varietal name. This seems to be a smail form of menziezt which sometimes merges into hochstelleri. ?Suter believes this to be only a pathologic form of menziezi. He says in a letter to the author that he has seen the same kind of disease among small rugatus. 890 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. +DIPLODON MENZIEZI var. DEPAUPERATUS Hutton. *Unio depauperatus Hurron, Tr.N. Z. Inst., XVI, 1884, p.216.—*ParEL, Conch. Sam., III, 1890, p. 150. New Zealand. DIPLODON WAIKARENSIS Colenso. *Unio waikarensis COLENSO, Tasm. Jl. N. Sci., II, 1841, p. 250, footnote; Tr. N. Z. Inst., XIV, 1882, p. 169. ! Waikare Lake, New Zealand. +DIPLODON ZELEBORI Dunker. *Unio zelebori DUNKER, Reise der Nov., 1867, p. 15, pl. 11, fig. 28.— *Hurron, N. Z. Moll., 1880, p. 161.—*P#TEL, Conch. Sam., ITI, 1890, p. 172. *Margaron (Unio) zelebori La, Syn., 1870, p. 52. New Zealand. DIPLODON FLYENSIS Tapperone Canefri. “Unio flyensis TAPPERONE CANEFRI, Ann. Mus. Genov., XIX, 1883, p. 293, fig. 1.— *PmTEL, Conch. Sam., III, 1890, p. 153. Fly River, New Guinea. + LIPLODON VITTATUS Lea. *Unio vittatus Lua, Pr. Ac. N. Sci. Phila., III, 1859, p. 153; *J1. Ac. N. Sci. Phila., _ IV, 1860, p. 249, pl. xxxviut, fig. 128; *Obs., VII, 1860, p. 67, pl. xxxvitl, fig. 128.—*REEVE, Conch. Icon., XVI, 1864, pl. xxi, fig. 83.—*PaTEL, Conch. Sam., III, 1890, p. 171. *Margaron (Unio) vittatus Lma, Syn., 1870, p. 35. Australia. + DIPLODON LESSONI Kuster. *Unio lessoni KUSTER, Conch. Cab., 1856, p. 135, pl. xxxV1, fig. 4. —“PTEL, Conch. Sam., III, 1890, p. 157. *Unio australis KUSTER, Conch. Cab., 1861, p. 230, pl. LXxvit, fig. 6. New South Wales. + DIPLODON AUSTRALIS (Lamarck) Hanley.? *? Unio australis LAMARCK, An. sans. Vert., VI, 1819, p. 80.—*?DESHAYES, Ene. Méth., II, 1830, p.582.—* HaNnLEy, Test. Moll., 1842, p. 192; * Biv. Shells, 1843, p. 192, pl. xx1, fig. 25.—* CaTLow and REEVE, Conch. Nom., 1845, p. 56.— * PHILiPPi, Conch., III, 1848, p. 81, pl. v, fig.5.—*H. and A. ADAms, Gen. Rec. Moll., II, 1857, p.493.—* Pa:TEL, Conch. Sam., III, 1890, p. 145. ‘Suter thinks this is a variety of menziezi, but Colenso states that the posterior slope is keeled. If this is so, it must be quite different from that species. ?Lamarck’s description of this species is wholly inadequate, and would apply about equally well to several species. He refers to no figure, and Lea states that he did not see the type. I credit the species to Hanley, whose figure seems to represent a form of an abundant and variable species commonly referred to Lamarck. =, ~~ No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. S91 * Margarita (Unio) australis LEA, Syn., 1886, p. 25; 1838, p. 19. *Hyridella australis SWAINSON, Tr. on Mal., 1840, p. 285. *Margaron (Unio) australis LEA, Syn., 1852, p. 28; 1870, p. 44. *? Unio depressus Lesson, Voy. Coquille, 1830, II, p. 427, pl. xv, fig.! *Margarita (Unio) depressus LEA, Syn., 1836, p.32; 1838, p. 22. *Margaron (Unio) depressus Lua, Syn., 1852, p.33; 1870, p. 54. “Unio ambiguus PuHiLippi, Conch., III, 1847, p. 47, pl. m1, fig. 2..—* Sowrrsy, Conch. Icon., XVI, 1868, pl. Lxrx, fig. 355.—* Pa TEL, Conch. Sam., III, 1890, p. 144. * Unio shuttleworthi KUSTER, Conch. Cab. Unio, 1856, p. 152, pl. xtiv, fig. 2. *Unio philippianus KusTER, Conch. Cab. Unio, 1861, p. 235, pl. LXXIX, fig. 2. *Unio balonnensis CONRAD, Pr. Ac. N. Sci. Phila., V, 1850, p. 10; *Jl. Ac. N. Sei. Phila., II, 1854, p. 295, pl. xxv1, fig. 3. *?Unio daniellii VILLA, Jl. de Conch., XIX, 1871, p.328.—* Smirn, J]. Linn. Soc., XVI, 1882, p. 307.—*? P& TEL, Conch. Sam., III, 1890, p. 150. Unio bednalli TaTE. Where?? OL +DIPLODON AUSTRALIS var. LEGRANDI Petterd. * Unio depressus REEVE, Conch. Icon., XVI, 1864, pl. xviul, fig. 81. *Unio legrandi PETTERD, Pr. R. Soc. Tasm., 1887, p. 22; 1888, p. 81. Australia; Tasmania. +DIPLODON JEFFREYSIANUS Lea. * Unio jeffreysianus LEA, Pr. Ac. N. Sci. Phila., I, 1871, p.188; *Jl. Ac. \. Sei. Phila., VIII, 1874, p. 23, pl. vu, fig. 20; *Obs., XIII, 1874, p. 27, pl. vit, fig. 20. Australia. +DIPLODON PROFUGUS Gould. *Unio profugus GOULD, Pr. Bost. Soc. N. H., 1850, p. 295;> *U. 8. Expl. Exp., XII, 1852, p. 429, figs. 543, 543a, 543b.—*.H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 494.—* GouLpD, Otia Conch., 1862, p. 88. *Margaron (Unio) profugus LEA, Syn., 1852, p. 29. Hunter’s River, New South Wales. DIPLODON MORETONICUS Reeve. *Unio moretonicus REEVE, Conch. Icon., XVI, 1865, pl. xx1v, fig. 118.—* PaTEL, Conch. Sam., III, 1890, p. 160. , *Margaron (Unio) mortonicus LEA, Syn., 1870, p. 43. Tasmania. 1Credited to Parreyss in litt. 2 Specimens received from Mr. Bednall bearing the above name are undoubtedly a form of D. australis. I do not know whether it has been described or not. 3The types are in the U. 8. National Museum collection. Lea believes it to be the same as the australis. Iam inclined to think it distinct. 892 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. } + DIPLODON CULTELLIFORMIS Conrad.! *?Unio depressa LAMARCK, An. sans. Vert., VII, 1819, p. 79.—*? DELESSERT, Rec. Coq. Lam., 1841, pl. xu, fig. 5.—*CneEnv, Il. Conch., 1858, pl. xu, figs. 4, 4a. *Unio depressus HANLEY, Test. Moll., 1842, p. 200; * Biv. Shells, 1843, p. 200.— *CaTLow and REEVE, Conch. Nom., 1845, p. 58.—* ConrRaD, JI. Ac. N. Sci. Phila., 1854, p. 295, pl. Xxxv1, fig. 2.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 493.—* Pare, Conch. Sam., III, 1890, p. 150. *Unio cultelliformis CONRAD, Pr. Ac. N. Sci. Phila., V, 1850, p. 10.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 493.—* Pa TEL, Conch. Sam., III, 1890, p. 149. *Margaron (Unio) cultelliformis Lua, Syn., 1852, p. 32; 1870, p. 52. *+ Unio paramatensis LEa, Pr. Ac. N. Sci. Phila., VI, 1862, p. 176; * Jl. Ac. N. Sci. Phila., VI, 1866, p. 60, pl. xx, fig.59; *Obs., XI, 1867, p. 64, pl. xx, fig. 59. *Margaron (Unio) paramattensis Lua, Syn., 1870, p. 35. Australia. +DIPLODON LUTULENTUS Gould. *Unio lutulentus GOULD, Pr. Bost. Soc. N. Hist., II, 1850, p. 295; *U.S. Expl. Exp., XII, 1852, p. 428, figs. 542, 542a, 542, 542c.—* H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 493.—* GouLp, Otia Conch., 1862, p. 88.—* REEVE, Conch. Icon., XVI, 1865, pl. xxv, fig. 122.—* Hutton, N. Z. Moll., 1880, p. 161.— *PxTEL, Conch. Sam., III, 1890, p. 158. *Margaron ( Unio) lutulentus Lea, Syn., 1852, p. 32; 1870, p. 52. New Zealand. +DIPLODON WILSONII Lea. *Unio wilsonit LEA, Pr. Ac. N. Sci. Phila., 1859, p. 153; *J1. Ac. N. Sci. Phila., IV, 1860, p. 257, pl. XL, fig. 137; *Obs., VII, p. 74, pl. XL, fig. 137.—* SowERBY, Conch. Icon., XVI, 1868, pl. Lxxxvul, fig. 474.—* Pa TEL, Conch. Sam., III, 1890, p. 172. * Margaron (Unio) wilsontt LEA, Syn., 1870, p. 47. *t Unio (Alasmodon) stuarti ADAMS and ANGAS, Pr. Zool. Soc. Lond., 1863, p. 417.? * Unio stuarti SOWERBY, Conch. Icon.,X VI, 1866, pl. Liv, fig. 279. * Anodon stuarti SOWERBY, Conch. Icon., XVII, 1867, pl. xxxtIv, figs. 136, 136a, 136d. * Margaron (Unio) stuarti LEA, Syn., 1870, p. 52. * Margaritana stuarti P&TEL, Conch. Sam., III, 1890, p. 174. * Anodonta stuartti P“#TEL, Conch. Sam., III, 1890, p. 185. Australia. +DIPLODON EVANSI Adams and Angas. * Unio (Alasmodon) evansi ADAMS and ANGAS, Pr. Zool. Soc. Lond., 1864, p. 39. * Unio evansi SOwERBY, Conch. Icon., XVI, 1867, pl. LVI, fig. 285.—* P&TEL, Conch, | Sam., III, 1890, p. 152. 1T can not identify Lamarck’s Unio depressus with any certainty from his very meager description. Lea believed it to equal the form I have considered as australis, but Lamarck’s description seems to apply to a more elongated species. Delessert’s figure in 1841 probably equals Lea’s paramattensis. As the name depressus was used for a Unio in 1801 by Donovan I am obliged to use another for this. 2A specimen of this in the Lea collection from the Stuart expedition is identical with Lea’s species. s No 1205. SYNOPSIS OF THE NATADES—SIMPSON. 893 * Margaron (Unio) evansi LEA, Syn., 1870, p. 56. * Margaritana evansi P&TEL, Conch. Sam., III, 1890, p. 173. Murray River, Australia Section CUCUMERIA Conrad, 1853. (Type, Unio nove-hollandie Gray.) Shell elongated, trapezoidal, widest behind; pseudocardinals irregu- lar, small, not well developed, showing a tendency to break into denti- cles; laterals feeble; pallial line strongly pitted; nacre much thicker in front. (Group of Diplodon nove-hollandic.) Shell having the posterior two-thirds covered with irregular nodules, - which radiate somewhat from the posterior ridge. +DIPLODON NOV2-HOLLANDIZ& Gray. *Unio nove-hollandie GRAY, Pr. Zool. Soc. Lond., 1834, p. 57.—* MOLLER, Syn. Noy. Gen., 1836, p. 197.—* HANLEY, Test. Moll., 1842, p. 182; * Biv. Shells, 1843, p. 182.—*CaTLow and REEVE, Conch. Nom., 1845, p. 61.—*H. and A. : ADAMS, Gen. Rec. Moll., II, 1857, p. 496.—* P# TEL, Conch. Sam., III, 1890, p. 161. * Margarita (Unio) nove-hollandiw LEA, Syn., 1836, p.17; 1838, p. 16. * Margaron ( Unio) nove-hollandie Lea, Syn., 1852, p. 23; 1870, p. 35. *+Unio cucumoides LEA, Proc. Am. Phil. Soc., 1840, p.285; *Tr. Am. Phil. Soc., VIII, 1842, p. 192, pl. vil, fig.2; *Ohbs., III, 1842 p. 30, pl. vi, fig. 2.—* Han- LEY, Biv. Shells, Sup., 1856, p. 382, pl. xxiv, fig.4.—*H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p.497.—* CHENU, II]. Conch., 1858, pl. xx vil, figs. 3, 3a, 3b.—* KusTER, Conch. Cab. Unio, 1861, p. 219, pl. Lxx1v, fig. 1.—* REEVE, Conch. Icon., XVI, 1865, pl. x1x, fig. 89.—* Pa&TEL, Conch. Sam., III, 1890, p. 149. * Margaron (Unio) cucumoides LEA, Syn., 1852, p.21; 1870, p. 31. *? Unio cumingianus DUNKER, Zeits. fiir Mal., 1853, p. 53. Australia. (Group of Diplodon shuttleworthii.) Beak sculpture consisting of. strong, irregularly radiate, curved, nodulous bars; surface of shell somewhat sulcate, but not nodulous. + DIPLODON SHUTTLEWORTHII Lea. *Unio shuttleworthii Lea, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 94; * Jl. Ac. N. Sci. Phila., III, 1857, p. 304, pl. xxvii, fig. 19; VI, 1857, p. 24, pl. XX VIN, fig. 19.— * SOWERBY, Conch. Icon., XVI, 1866, p]. Xx xu, fig. 167. *Margaron ( Unio) shuttleworthii LEA, Syn., 1870, p. 36. *? Unio mutabilis REEVE, Conch. Icon., XVI, 1865, pl. xxiv, fig. 112. *Unio angasi SOWERBY, Conch. Icon., XVI, 1867, pl. Lv, fig. 282. *Margaritana angasi P&TEL, Conch. Sam., III, 1890, p. 172. *Anodonta angasi PATEL, Conch. Sam., III, 1890, p. 176. Australia. had 894 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. +DIPLODOCN MUTABILIS Lea. *Unio mutabilis LEA, Pr. Ae. N. Sci. Phila., III, 1859, p. 152; *J1. Ac. N. Sci. Phila., IV, 1860, p. 248, pl. xxxvni, fig. 127; *Obs., VII, 1860, p. 66, pl. xxxvutl, fig. 127.—* PHTEL, Conch. Sam., III, 1890, p. 160. *Margaron (Unio) mutabilis Lea, Syn., 1870, p. 53. Murray River, Australia. Subgenus LEAVIROSTRIS Simpson, 1900. (Type, Unio stagnorum Dautzenberg. ) Shell irregularly quadrate, thin, inequilaterai, compressed, rounded and narrowed in front, somewhat biangulate and truncate behind; beaks rather low, without sculpture;! surface finely concentrically erooved; epidermis delicately lamellated and serrate; pseudocardinals small; laterals elongated; anterior muscle impressions small, well marked; posterior scars superficial; nacre bluish- white. Animal unknown. DIPLODON STAGNORUM Dautzenberg. * Unio stagnorum DAUTZENBERG, Bull. Acad. Belg., XX, 1890, p. 372, pl. 1, figs. 7, 10. Kongo River, Africa. The following are unfigured and uncertain species. * Unio depressa D’ORBIGNY, Guer. Mag., 1835, p. 34.2 *Unio fokkesi DUNKER, Zeits. fiir Mal., IX, 1853, p. 54. Rio de la Plata, Brazil. According to von Ihering, this = U. wheat- leyanus Lea. * Unio koseretzi CLESSIN, Mal. Bl., X, p. 172. River Guahyba, Brazil. * Unio macropterus DUNKER, Zeits. fiir Mal., III, 1846, p. 109. Brazil. *Unio paraguanus VON MARTENS, S. B. Ges. Nat. Fr., 1895, p. “Unio zealandicus PmtTrt, C.Sam., IIT, 1890, p. 172. Said to be of Gray. Where? Unio damnoica D’ORBIGNY. Where? Unio guahybe VON IHERING. Unio ethiopiformis VON IHERING. Unio bishoffi VON THERING. Unio sebastanw VON IHERING. Unio iheringt VON CLESSIN. 1 According to Dautzenberg the beaks of the remarkable species on which I have founded the above subgenus are completely smooth. It has the appearance of a Diplodon in all other respects, according to the figures and description. Dautzen- berg does not very carefully describe the teeth. 2 According to d’Orbigny (Voy. Am. Mer., p.611), this species, which he says is the depressa of Lamarck, is found in Chile, near Valparaiso. It can not be Lamarck’s species. NO. 1205. SYNOPSIS OF THE NAITAIES—SIMPSON. . 895 Ido not know where the last five species are described, and they probably have never been published. Wright has named a Texan species. Unio theringi. Family MUTELID A. Shell usually without sculpture throughout; beaks smooth or but faintly corrugated, never exhibiting the remains of an embryonic shell; with or without teeth, which, when present, are irregularly taxodont, the shell showing vestiges of them in all the genera; nacre soft, richly tinted, generally surrounded with a wide, prismatic border; escutcheon large, distinct; palleal line usually simple, but sometimes having a slight sinus posteriorly. Animal having the labial palpi large, rounded below, generally with- out free points, scarcely or not at all united posteriorly; anal and superanal openings not separated; mantle generally closed behind into branchial and anal siphons, which are always separated by a strong bridge; marsupium occupying the inner gills; embryo a lasidium, com- posed of three segments, the anterior head-like, the median bearing a single shell, the posterior tail-like. Genus SAW TAs ean lS3s: (Type, Anodonta rubens Lamarck. ) Spatha Lea, Tr. Am. Phil. Soc., VI, 1858, p. 141, footnote. Shell elliptical; beaks very slightly or not at all sculptured; left valve having a faint, compressed tooth under and in front of the beak, which fits into a corresponding depression in the right valve; the entire hinge area often covered with longitudinally folded epidermal matter; escutcheon dark, sharply triangular; beak cavities shallow, with a single, elongate, deep scar in each; two large anterior muscle scars and two posterior ones, the upper small. - Animal having the palpi longer than wide, semicircular, attached along the upper edge, not united; mantle margin united behind so that the branchial and anal apertures are closed; on the under margin the mantle is entirely open; outer branchiz united to the mantle to their extremity; inner the larger, free from the abdominal sack; foot tongue shaped, thick; anal and branchial openings separated by a strong bridge. SS. rubens Lamarck (Troschel). Subgenus SPATHA Lea, 1838. (Type, Spatha rubens Lamarck.) Shell solid, having faint concentric beak sculpture. (Group of Spatha rubens.) Seulpture of the beaks following the growth lines; shell solid. 896 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. tSPATHA RUBENS Lamarck. * dnodonta rubens LAMARCK, An. sans. Vert., VI, 1819, p.85.—* BLAINVILLE, Man., 1825, p. 538.—* CAILLIAUD, Voy. 4 Méroé, IV, p. 262; Atlas, II, 1826, pl. Lx, fig. 12.—*AUDOUIN, Savigny’s Exp. de l’Egypte, Coquilles, 1827, pl. vi1.'— *DrsHayEs, Enc. Meth., II, 1827, p. 147, pl. cct, figs. 1, 1b. * Tridina rubens RANG, Nouv. Ann. Mus., 1885, p. 314.—* Lea, Syn., 1836, p. 56.— *HANLEY, Biv. Shells, 1843, p. 225.—*CaTrLow and REEVE, Conch. Nom., 1845, p. 68.—* MorELET, Moll. Terr. et Fluv., 1868, p. 98. * Platiris (Spatha) rubens Lua, Syn., 1838, p. 33; 1852, p. 55; 1870, p. 89. * Spatha rubens CLESSIN, Conch. Cab. Ano., 1853, p. 185, pl. vu, fig. 1; 1876, pl. Lx1, fig. 1.—* H. and A. ApaMs, Gen. Ree. Moll., I, 1857, p. 507, pl. cx1x; III, figs. 3, 3a.—* CHENU, Man., 1859, II, p. 148, fig. 729.—* Paren, Conch. Sam., III, 1890, p. 188. * Anodon rubens SOWERBY, Conch. Icon., X VII, 1867, pl. 11, fig. 5. Anodonta clappertoni Kania, Duchane and Clapperton’s Travels, 1826, p. _ Anodonta splendens DE CRISTOFORI, Crist. and Jan. Cat., 1832 (?), p. *Tridina solida ANTON, Verz. der Conch., 1839, p. 16. * Anodonta solida KUSTER, Conch. Cab. Ano., 1853, p. 50, pl. x11, fig. 1. *Spatha wissmani VON MARTENS, S. B. Nat. Fr., 1883, p.73; Conch. Mitth., III, 1885 (?), p. 139, pl. XX vi1. * Spatha rotundata VON MARTENS, Besch., 1897, p. 242, fig. d.? +SPATHA RUBENS var. CAILLIAUDI von Martens, * Anodonta rubens AUDOUIN in SAviIGNny, Icon. Moll. Eg., 1827, pl. vu, fig. 1. * Spatha cailliaudi VON MARTENS, Mal. Bl., XIII, 1866, p. 9.—* JickELI, L. and S. W. Moll., 1874, p. 259, pl. vil, fig. 1.—* KOBELT, Icon., new ed., II, 1886, p. 27, pl. XLVI, fig. 267.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 314.— *P2HTEL, Conch. Sam., III, 1890, p. 188. *Spatha bellamyi JOUSSEAUME, Bull. Soc. Zool. Fr., XI, 1886, p. 491, pl. x10, figs. 2, 2a. *Spatha renei JOUSSEAUME, Bull. Soc. Zool. Fr., XI, 1886, p. 492, pl. x11, figs. 3, 3a. : Nile; Niger; Senegal; other points in West Africa. tSPATHA LEPSII Jickeli. * Spatha lepsti JICKELI, Faun. L. and 8. W. Moll, 1874, p. 265, pl. 1x, fig. 4.— * P&TEL, Conch, Sam., III, 1890, p. 188. Upper Egypt: Senegal. +SPATHA CHAIZIANA Rang. * Anodonta chaiziana RANG, Mem. Aceph Senegal, (Nouv. Ann. Mus.), 1835, p. 13, pl. xxvint.2—* MORELET, Moll.Terr. and Fluv., 1868, p. 97. 1Savigny’s plates were issued without explanation in 1813. In 1827 Audouin pub- lished an explanation of them. Von Martens believes this is not the Spatha rubens of the Encyc. Méth. (Mal. Bl., 1866). This species is widespread, abundant, and variable, and the material I have examined leads me to believe that it may include either the short, rounded form of the Encye. Méth. or specimens that are more elongated and even somewhat rhomboid. 2T can not see any essential difference between this and forms of what I believe are S. rubens. I believe that the S. cailliaudi is only one of these forms. 3I have only seen the reprint of this paper, which begins with page 1. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 897 * Margarita (Anodonta) chaiziana LEA, Syn., 1838, p. 30. * Anodon chaiziana CATLOW and REEVE, Conch. Nom., 1845, p. 66. * Margaron (Anodonta) chaiziana LkA, Syn., 1852, p. 49; 1870, p. 79. * Spatha chaiziana H. and A. ADAMs, Gen. Rec. Moll., I, 1857, p. 507.—* Cress, Conch. Cab. Ano., 1876, p. 187, pl. Lxi1t, figs. 3, 4.—* Pas TEL, Conch. Sam., III, 1890, p. 188. Senegal; Niger; Upper Nile; West Africa. +SPATHA TRISTIS Jousseaume. * Spatha tristis JOUSSEAUME, Bull. Soc. Zool. Fr., XI, 1886, p. 497.! *Spatha rochebrunei JOUSSEAUME, Bull. Soc. Zool. Fr., XI, 1886, p. 494, pl. xiv, figs. 1, la. Upper Senegal. SPATHA TRAPEZIA von Martens. * Spatha trapezia VON MARTENS, Besch., 1897, p. 243, fig. SPATHA TRAPEZIA var. SENILIS von Martens. * Spatha trapezia var. senilis VON MARTENS, Besch., 1897, p. 244. Lake Victoria Nyanza. SPATHA DROUETI Chaper. * Spatha droueti CHAPER, Bull. Soc. Zool. de Fr., X, 1885, p. 2, pl. 1, figs. 1-3.2— * PHTEL, Conch. Sam., III, 1890, p. 188. Assinie, Africa. SPATHA MARTENSI STURANY. Spatha martensi STURANY in Baumann, Durch Massai, 1894, p. 12, pl. xxv, fig. 39.—VON MARTENS, Besch., 1897, p. 244. Stream falling into Lake Victoria Nyanza. I have not seen Sturany’s paper. SPATHA KIRKI Ancey. * Spathella Kirki ANCEY, Bull. Soc. Zool. Fr., VII, 1894, p. 229, figs. 4-6.—* von MARTENS, Besch., 1897, p. 244, fig.® SPATHA KIRKI var. LIEDERI von Martens. * Spatha kirki var. iederi VON MARTENS, Besch., 1897, p. 245. Shire River and Lake Nyanza. SPATHA MABILLEI Jousseaume. * Spatha mabillei JOUSSEAUME, Bull. Soc. Zool. de Fr., XI, 1886, p. 495, pl. xiv, figs. 2, 2a. Senegal River. 1Morelet believes this to—chaiziana. An author’s shell is in the U. 8. National Museum, and I am inclined to believe it to be a valid species. 2Only inside and dorsal views, and I can not be sure whether it is a good species or not. 3 This species seems to me to-be very close to S. trapezia von Martens. Proc. N. M. vol. xxii 57 898 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXL. SPATHA ADANSONI Jousseaume. * Spathella adansont JOUSSEAUME, Bull. Soc. Zool. Fr., XI, 1886, p. 498, pl. XIv, figs. 4, da. High Senegal. +SPATHA WAHLBERGI Krauss. * Tridina wahlbergi Krauss, Sud Af. Moll., 1848, p. 19, pl. it, fig. 1. * Platiris (Spatha) wahlbergi Lua, Syn., 1852, p.55; 1870, p. 389. * Spatha waklbergi H. and A. Apams, Gen. Rec. Moll, II, 1857, p. 507.—*° VON Marrens, Mal. Bl., VI, 1860, p. 217.—*Cximssin, Conch. Cab. Ano., 1876, py 18i,) pl. Lxan, fe. 1 are, Conch. Sam., III, 1890, p. 188.—* von MartTENS, Besch., 1897, p. 247. * Mutela wahlbergi SMiTH, Ann. and Mag., VIII, 1891, p. 319. *+ Spatha natalensis Lua, Pr. Ac. N. Sci. Phila., VIII, 1864, p. 115; * Jl. Ac. N. Sci. Phila., VI, 1866, p. 64, pl. xx, fig. 58; *Obs., XI, 1867, p. 68, pl. xx, fig. 58.— * CLESSIN, Conch. Cab. Ano., 1876, p. 189, pl. Lxu1, figs. 7, 8. * Platiris (Spatha) natalensis LEA, Syn., 1870, p. 89. *Spatha hartmannt VON MARTENS, Mal. BI., XIII, 186, p. 10.—*Jickert, Faun., 1874, p. 263, pl. vu, fig. 2.—*Ciessin, Conch. Cab. Ano., 1875, p. 190, pl. LXI, figs. 2, 3.—*P#TEL, Conch. Sam., ITI, 1890, p. 188. * Anodon tabula SOwERBY; Conch. Icon.,X VII, 1867, pl. xvu41, fig. 68. * Anodonta tabula Pa TEL, Conch. Sam., III, 1890, p. 185. SPATHA WAHLBERGI var BOURGNIGNATI Bourgnignat. *Spatha bourgnignati BOURGNIGNAT, Esp. Ouk. et Tan., 1885, p. 12. *Spathella bourgniqnati BOURGNIGNAT, Moll. Af. Eq., 1889, p. 197, pl. vir, fig. 1. *Spathella spathuliformis BOURGNIGNAT, Moll. Af. Eq., 1889, p. 199, fig. *Spatha wahlbergi spatuliformis VON MARTENS, Beschalte, 1897, p. 248, pl. VIL, fig. 18. *Spathella bloyeti BOURGNIGNAT, Moll. Af. Eq., 1889, p. 198, pl. vut, fig. 3. * Spatha bloyeti VON MARTENS, Besch., 1897, p. 249. Tropical and southern Africa. The variety is reported from Lake Nyassa. SPATHA LACUSTRIS Simpson. * Spatha anceyi BOURGNIGNAT, Bull. Soc. Zool. Fr., VII, 1894, p. 231, fig. 7.—-* VON Martens, Besch., 1897, p. 247. Lake Nyassa. +SPATHA NYASSAENSIS Lea. * Spatha nyassaensis LEA, Pr. Ac. N. Sci. Phila., VIII, 1864, p. 109; *Jl. Ac. N. Sei. Phila., VI, 1866, p. 36, pl. x111, fig. 83; *Obs., XI, 1867, p. 40, pl. x11, fig. 33.— *@CLESSIN, Conch. Cab. Ano., 1876, p. 190, pl. Lxu, figs. 3, 4.—* PaTEL, Conch. Sam., III, 1890, p. 188.—* von Martens, Besch., 1897, p. 246. * Platiris (Spatha) nyassaensis LEA, Syn., 1870, p. 89. * Spathella nyassaensis ANCEY, Bull. Soc. Zool. rr.. VI, 1894, p. 228. * Spatha nyassanad BOURGNIGNAT, Bull. Soc. Mal. Fr., VI, 1889, p. 38. 1Changed from S. anceyi, as there is another species with that name, No, 1205. SYNOPSIS OF THE NAIADES—SIMPSON, 899 SPATHA MARNOI Jickeli. * Spatha marnoi JICKELI, L. and Suss. Moll. N. Ost-Af., 1874, p. 259, pl. vin, fig. 3.— *P&TEL, Conch. Sam., III, 1890, p. 188. Abyssinia. SPATHA SUBZZQUILATERA von Martens. “Spatha subequilatera VON MARTENS, Conch. Mitt., III, 1887, p. 18, pl. x11, figs. 8,9; * Besch., 1897, p. 246, pl. vu, fig. 16. Spatha bawmanni STURANY in Baumann, Durch. Massai., 1894, p. 12, pl. xxv, fig. 38. Lake Victoria Nyanza. SPATHA SINUATA von Martens. * Spatha sinuata VON MARTENS, S. B. Nat. Fr., 1883, p. 173; Conch. Mitt., IT, 1885, p. 190, pl. xx x1v, figs. 5, 6. Congo. (Group of Spatha petersi.) Shell rather thin and small, greenish or olive; beak sculpture con- sisting of faint, more or less oblique, parallel ridges; hinge line narrow; teeth scarcely developed; nacre bluish or greenish. Animal unknown. +SPATHA PETERSI von Martens. *Spatha peterst VON MARTENS, Mal. Bl., VI, 1860, p. 218, pl. ut, figs. 1, 2.— *Dourn, Pr. Zool. Soc. Lond., 1864, p. 117.—* von Martens, Besch., 1897, p. 251. * Mutela petersi CLESSIN, Conch. Cab. Ano., 1875, p. 197, pl. Lx, figs. 1, 2.— *PA&TEL, Conch. Sam., III, 1890, p. 187.—* Smiru, Pr. Mal. Soc. Lond., 1894, p. 167. Spathella petersi BOURGUIGNAT, Mol. Af. Eq., 1889, p. 197. *tSpatha modesta Lea, Pr. Ac. N. Sci. Phila., VIII, 1864, p.109; * Jl. Ac. N. Sei. Phila., VI, 1866, p. 37, pl. x11, fig.35; *Obs., XI, 1867, p. 41, pl. x11, fig. 35. * Platiris (Spatha) modesta LEA, Syn., 1870, p. 89. Mozambique; Zanzibar and Uganda. +SPATHA ARCUATA Cailliaud. * Anodonta arcuata CAILLIAUD,! Voy. &’ Méroé, IV, 1826, p. 263; II, pl. Lx, figs. 4, 5.— *CaTLow and REEVE, Conch. Nom., 1845, p. 66.—* H. and A. ADAMS, Gen., Rec. Moll., II, 1857, p. 503.—* von Martens, Mal. Bl., XIII, 1866, p. 77.— * 2CLESSIN, Conch. Cab. Ano., 1874, p. 145, pl. xtvu, figs. 1, 2.—* JickE11, L. and Suss. Moll. N. Ost-Af. 1874, p.265.—* Parsi, Conch. Sam., III, 1890, p. 176. * Margarita (Anodonta) arcuata Lea, Syn., 1836, p. 54; 1838, p. 32. * Tridina arcuata POTIEZ and MICHAUD, Gall. Moll., 1844, p. 146, pl. Lv, fig. 4. * Margaron (Anodonta) arcuata LEA, Syn., 1852, p.53; 1870, p. 83. * Spatha arcuata JICKELI, Faun., 1874, p. 265.—* Pare, Conch. Sam., III, 1890, p. 188. Egypt; Abyssinia. 1 Arcuta in The Voyage; a typographical error, I presume. 900 PROCEEDINGS OF THE NATIONAL MUSEUM, VOL, XXII- SPATHA CRYPTORADIATA Putzeys. > * Spatha cryptoradiata PuTzZEYs, Proc. Verb. Soc. Mal. Belg., 1898, pl. XXvu, figs. 14, 15. Leopoldville; Congo. SPATHA STUHLMANNI von Martens. * Spatha stuhlmannii VON MARTENS, Besch., 1897, p. 250, fig. ! Lake Albert; Nyanza. SPATHA SUBRENIFORMIS Sowerby. * Anodon soleniformis SOWERBY, Conch. Icon., XVII, 1867, pl. xrv, fig. 50. * Anodonta subreniformis P2zTEL, Conch. Sam., III, 1890, p. 185. Lake Nyanza. SPATHA PFEIFFERIANA Bernardi. * Margaritana pfeifferiana BERNARDI, Jl. de Conch., IV, 1860, p. 331, pl. x11, figs. 1, 2.—P.®TEL, Conch. Sam., UI, 1890, p. 173. * Margaron (Margaritana) pfeifferiana LEA, Syn., 1870, p. 68. Gaboon; West Africa. tSPATHA DAHOMEYENSIS Lea. * Anodonta dahomeyensis LEA, Pr. Ac. N. Sci. Phila., III, 1859, p. 154; *Jl. Ac. N. Sei. Phila., IV, 1859, p. 261, pl. x11, fig. 141; *Obs., VII, 1860, p. 79, pl. X11, fig. 141.—* PETEL, Conch. Sam., III, 1890, p. 178.—* CLEssIn, Conch. Cab. Ano., 1873, p. 103, pl. XXxI, figs. 5, 6. ~ dnodon dahomeyensis SOWERBY, Conch. Icon., X VII, 1870, pl. XxX xv, fig. 151. * Margaron (Anodonta) dahomeyensis LEA, Syn., 1870, p. 82. *t Anodonta senegalensis Lea, Pr. Ac. N. Sci. Phila., II, 1859, p. 154; *Jl. Ac. N. Sci. Phila., IV, 1860, p. 260, pl. x11, fig. 140; *Obs., VII. 1860, p. 78, pl. Xt, fig. 140.—* CLEssIN, Conch. Cab. Ano., 1873, pl. XXXJ, figs. 7, 8.—* P£TEL, Conch. Sam., IIT, 1890, p. 184. * dnodon senegalensis SOWERBY. Conch. Icon., X VII, 1867, pl. x1, fig. 35; 1870, pl. XXXII, fig. 130. * Margaron (Anodonta) senegalensis LEA, Syn., 1870, p. 82. * Spatha senegalensis PTEL, Conch. Sam., III. 1890, p. 188. * Mutelina senegalica JOUSSEAUME, Bull. Soc. Zool. de Fr., XI, 1886, p. 488.2 West Africa. SPATHA COMPLANATA Jousseaume. ~ Mutelina complanata JOUSSEAUME, Bull. Soc. Zool. de-Fr., XI, 1886, p. 489, pl. x1, figs. 1, la. Upper Senegal; Niger River. 1T am doubtful whether this is distinct from S. arcuata. 2Jousseaume has the unspeakable assurance to take the 4nodonta senegalensis of Lea, place it in the so-called genus Mutelina, change the specific name to senegalica, and credit the whole to Bourguignat. No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 901 SPATHA DIVARICATA von Martens. * Spatha divaricata VON MARTENS, Besch., 1897, p. 250, pl. vit, fig. 15. Lake Victoria; Nyauza. Subgenus MONCETIA Bourguignat, 1885. (Type, Moncetia anceyi Bourguignat. ) Shell long-elliptical, inequilateral, com pressed, thick, somber-colored ; beaks compressed, smooth, sharp; hinge with a tubercular eminence near the beak of the right valve, with two internal ligaments and three eroups of muscular impressions (Bourguignat).' Animal unknown. SPATHA ANCEYI Bourguignat. * Moncetia anceyti BOURGUIGNAT, Esp. Ouk., 1885, p. 34; * Icon. Mal., 1888, pl. xxx, tig. 1.—* VON MarTens, Besch., 1>97, p. 258. * Moncelia jouberti BOURGUIGNAYT Un. et Ir., 1886, p. 63; *Ilcon. Mal., 1888, pl. XXX, fig 4. Lake Tanganyika. SPATHA MONIETI Bourguignat. * Moncetia monieti BOURGUIGNAT, Un. et Ir., 1886, p. 61; * Icon. Mal., 1888, pl. ZOOS 1h [fe r * Moncetia rochebrunecana BOURGUIGNAT, Nouv. Mal., 1886, p. 62; *Icon. Mal., 1888, pl. xxx, fig. 8. . Lake Tanganyika. SPATHA LAVIGERINA Bourguignat. * Moncetia lavigerina BOURGUIGNAT, Nouv. Mal., 1886, p.60; *Icon. Mal., 1888, pl. XXX, fig. 6. * Moncelia bridouxi BOURGUIGNAT, Un. et Ir., 1886, p. 65; *Icon. Mal., 1888, pl. VEO, 1H, Be Lake Tanganyika. Subgenus ASPATHARIA Bourguignat, 1885. (Type, Margaritana vignoniana Bernardi. ) Shell elongated rhomboid, somewhat compressed, with a full, rounded posterior ridge, from which curved rows of fine, broken corrugations radiate; epidermis dark olive ,wrinkled, rayless; beak sculpture not seen; hinge with a low, slightly elevated ridge in the left valve in front of the beak; dorsal scars small; nacre lurid, bluish-green. Animal unknown. 1This may be a distinct genus, though its characters seem to agree fairly well in most respects with those of Spatha. Bourguignat does not describe the muscle scars or tell anything of the nacre. 902 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. +SPATHA VIGNONIANA Bernardi. * Margaritana vignoniana BERNARDI, Jl. de Conch., VII, 1858, p. 302, pl. x, fig. 1.— *PaTEL, Conch. Sam., III, 1890, p. 174. * Unio vignoniana REEVE, Conch. Icon., XVI, 1865, pl. xxv, fig. 120. * Anodonta vignonana MUSGRAVE, Phot. Conch., 1863, pl. 1, fig. 1. *Anodon vignonanus REEVE, Conch. Icon., X VII, 1870, pl. xx1X, fig. 116. * Margaron (Unio) vignonana LEA, Syn., 1870, p. 32. * Margaron (Margaritana) vignowana LEA, Syn., 1870, p. 67. * Anodonta rugifera DUNKER, Mal. Bl., V, 1858, p. 225.1 Gaboon, West Africa. SPATHA CORRUGATA Dautzenberg. * Spatha corrugata DAUTZENBERG, Jl. de Conch., X LI, 18938, p. 50, pl. vil, fig. 5. River Niari, West Africa. The following are unfigured and unidentified species. * Spatha pangallicensis ROCHEBRUNE, Bull. Soc. Phil., VI, 1882, p. 33. High Senegal. * Anodonta tawi RANG., Nouv. Ann. Mus., 1834, p. 297. Senegal. : * Spatha baikit H. ADAMS, Proc. Zool. Soc. Lond., 1866, p. 447. Niger River. * Spatha anataria JICKELI, Faun. Suss. Moll. N. O. Af., 1874, p. 266. Kgypt. * Spatha gancinensis ROCHEBRUNE, Bull. Soc. Mal. Fr., III, 1886, p. 9. * Spatha corneola ROCHEBRUNE, Bull. Soc. Mal. Fr., III, 1886, p. 9. * Spathella protchi ROCHEBRUNE, Bull. Soc. Mal. Fr., III, 1886, p. 9. Kongo River. *Chambardia BOURGUIGNAT in Servain, 1891. New name for the Egyptian Tridinide. Chambardia bourguignati, C. locardiana, C. letourneuxiana, C. phara- onum, C. rhynchonella, CO. rhynchoidéa. Some of these are credited to Bourguignat and some to Servain. I don’t know what they are. They may be Moncetias. Genus MUTELA Scopoli, 1777. (Type, Iridina exotica Lamarck. ) Mutela Scopout, Intr. Nat. Hist., 1777, p. 397. Tridina LAMARCK, An. sans Vert., VI, 1819, p. 88. Calliscapha Swainson, Tr. on Mal., 1840, p. 380. Eufira GIsTEL, Naturg. Hohe Schul., 1848, p. Shell elongated, slightly inflated, with low, smooth beaks, and a rounded posterior ridge; surface faintly concentrically grooved; epider- mis rayless; hinge straight, having generally vestiges of taxodont teeth; 1 Probably =S. vignoniana Bernardi, but there is only a Latin description. Both were published the same year. NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON., 903 dorsal scars an irregular row, extending downward and forward; muscle scars irregular. Animal having the palpi longer than wide, not united; mantle mar- gin united as far as the foot, so that the branchial and anal openings are closed; outer branchiz united to the mantle to the extremity; inner entirely united to the foot; foot tongue shaped, somewhat produced anteriorly. Jridina celestis Lea (Troschel.) (Group of Mutelu exotica.) Shell elongate, rhomboid, wider and subtruncated behind, subsolid. +MUTELA EXOTICA Lamarck. *TIridina exotica LAMARCK, An. sans Vert., VI, 1819, p. 89; * Ene. Méth., II, 1827, p. 147, pl. cctv, fig. 1, 1b; *Srark, Nat. Hist., IT, 1828, p. 88.—* Lxa, Syn., 1836, p. 56.—* Han ey, Biv. Shells, 1843, p. 225.—* CaTLow and REEVE, Conch. Nom., 1845, p. 68.—* SOWERBY, Conch. Icon., XVI, 1868, pl.1, fig. 2.—* CLEs- SIN, Conch. Cab. Ano., 1875, p. 231, pl. Lxx1, fig. 1. * Anodonta exotica BLAINVILLE, Man., 1825, p.538, pl. LXVI, fig. 3. * Platiris (Iridina) exotica LEA, Syn., 1838, p.33; 1852, p.54; 1870, p. 88. * Pleiodon exoticus PHTEL, Conch. Sam., III, 1890, p. 188. *Tridina elongata SOwERBY, Rec. and Fos. Shells, VII, 1821, fig. 1..—* OxEn, Isis, 1854, p. 458.—* SowERBy, Conch. Man., 1839, fig. 150.—* Swarnson, Tr. on Mal., 1840, p. 286, fig. 60.—* RrEveE, Conch. Syst., I, 1841, p. 122, pl. xc1.— * HANLEY, Biv. Shells, 1848, p. 225.—* Carlow and REEVE, Conch. Nom., 1845, p. 68.—* SowERBY, Conch. Icon., XVI, 1868, pl.1, fig. 1. * Platiris (Spatha) elongata La, Syn., 1838, p. 34. * Mutela elongata Pa TEL, Conch. Sam., III, 1890, p. 187. * Tridina striata OKEN, Isis, 1834, p. 458. * ? Mutela soleniformis BOURGUIGNAT, Esp. Ouk., 1885, p. 25.—* PrELsENEER, Bull. Mus. Belg., IV, 1886, p. 109.—* BourGuienart, Icon. Mal., 1888, pl. x x11, fig. 2.—* VON Marrens, Besch., 1897, p. 254. * 2 Mutela bridouxi BOURGUIGNAT, Un. et Ir., 1886, p. 25; *Ieon. Mal., 1888, pl. OSU Tiers Tropical Africa. tMUTELA DUBIA Gmelin. Le Mutel ApaNson, Hist. Nat. du Sen., 1757, p. 234, pl. xvi, fig. 21. * Mytilus dubia GMELIN, Syst. Nat., 1788, p. 3368.2 * Anodonta dubia Bosc, Hist Nat. Coq., III, 1824, p. 144. * Platiris (Spatha) dubia LEA, Syn., 1852, p. 55; 1870, p. 89. *Mutela dubia H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 506, pl. cxrx; III, figs. 1, la.—* CLussin, Conch. Cab. Ano., 1873, p. 194, pl. xxv, fig. 3.— * PATEL, Conch. Sam., III, 1890, p. 187. *Tridina dubia CHENU, Man., 1859, II, p. 147, fig. 726. * Mytilus dubius DiLLwyn, part, Cat., I, 1817, p. 318.—* Woop, Ind. Test. rev., 1856, p. 69, pl. x11, fig. 36. West Africa. 'T agree with Lea that this = exotica. The teeth are not strongly developed. *Gmelin refers to Adanson’s figure. Dillwyn evidently has Gmelin’s species and Cristaria plicata from China confounded. Two or three of these so-called species of Mutela are very close, and large series from different localities would probably show that they run together. There is much variation in the form and the develop- ment of hinge tubercles, even in a single species from a given locality. 904 PROCEEDINGS OF THE NATIONAL MUSEUM. vou. xxu1. *MUTELA NILOTICA Sowerby. * Tridina nilotica SOWERBY, Zool. Journal, J, 1835, p. 53, pl. u.—* ?CaAILLIAUD, Voy. & Méroé, 1826, pl. Lx, fig. 12.—* AUDOUIN, Savieny, Icon. Moll. Egypt, 1827, pl. vu, fig. 2:.—* Crovucn, Ill. Int. Lam., 1827, p. 17, pl. x, fig. 1.— *LEA, Syn., 1836, p.56.—* HANLEY, Biv. Shells, 1843, p. 225.—* CarLow and REEVE, Conch. Nom., 1845, p. 68.—* DEsHAYEs, Tr. Ele., II, 1853, p. 219, pl. xvui, figs. 6, 7.—*CHENU, Man., 1859, II, p. 148, fig. 727.—* SowERBy, Conch. Icon., XVI, 1868, pl. 11, fig. 4. * Platiris (Spatha) nilotica LEA, Syn., 1838, p. 33. * Mytilus niloticus Woop, Ind. Test. Rev., 1856, p. 207, pl. 11, sup. fig. 1. * Mutela nilotica H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 506.—* JicKkE11, Faun., 1874, p. 259.—* PareL, Conch. Sam., III, 1890, p. 187.—* WEsTER- LUND, Faun. Pal., Il, Pt. 7, 1890, p. 313. *% Mutela jouberti BouRGUIGNAT, Un. et Ir., 1886, p. 28; *Icon. Mal., 1888, pl. Xx, fig. 1.—* Pare, Conch. Sam., III, 1890, p. 187. * ? Mutela visseri BOURGUIGNAT, Un. et Ir., 1886, p. 31.—* Pa TEL, Conch. [Sam., ILI, 1890, p. 187. *Mutela vysseri BOURGUIGNAT, Icon. Mal., 1888, pl. x x11, fig. 3. MUTELA NILOTICA var. EMINI von Martens. * Mutela nilotica var. eminti VON MARTENS, Besch., 1897, p. 253. Tropical Africa. +|MUTELA ANGUSTATA Sowerby. * Tridina angustata SOWERBY, Conch. Icon., XVI, 1868, pl. 11, fig 5. * Mutela angustata JICKELI, Faun. N. O. Af., 1874, p. 268.—* PaTEL, Conch. Sam., IIT, 1890, p. 187.—* WESTERLUND, Faun. Pal., II., pl. 7, 1890, p. 312. Tropical Africa. +MUTELA ALATA Lea. *Spatha alata Lea, Pr. Ac. N. Sci. Phila., 1864, p. 109; *Jl. Ac. N. Sci. Phila., 1866, p. 35, pl. x11, hg. 315; *Obs., XI, 1867, p. 39; pl. xu, fic. 31-—* Pare Coneh. Sam., ITI, 1890, p. 188. * Platiris (Spatha) alata LEA, Syn., 1870, p. 89. * Mutela alata CLESSIN, Conch. Cab. Ano., 1876, p. 196, pl. LX1I, figs. 7, 8.—*ANCEY, Bull. Soc. Zool. de Fr., 1894, p. 232.—* VON MaRTENS, Besch., 1897, p. 253. * Burtonia alata ANCEY, Bull. Soc. Mal. Fr., VI, 1889, p. 38. Lake Nyassa. MUTELA SIMPSONI Ancey. * Mutela simpsoni ANCEY, Bull. Soc. Zool. de Fr., VII, 1834, p. 233, fig. 8. * Mutela alata var. simpsoni VON MARTENS, Besch., 1897, p. 253. Shire and Karonga rivers, near Lake Nyassa. MUTELA BOURGUIGNATI Bourguignat.! * Mutela bourguignati BOURGUIGNAT, Esp. Ouk., 1885, p. 8.—* SmirH, Ann. and Mag., X, 1892, p. 128, pl. x11, fig. 16.—* VON Martens, Besch., 1897, p. 255. Lake Nyanza. 1 Credited to Ancey, in litt. No. 1205. SYNOPSIS OF THE NAITADES—SIMPSON. 905 (Group of Mutela rostrata.) Shell somewhat inflated, thin, elongated, with a low, rounded poste- rior ridge ending in a point about midway up from the base; beaks low, smooth; epidermis bluish green, rayless; hinge line edentulous or having only the faintest vestiges of denticles; muscle scars large, shallow, indistinct; nacre bluish, shaded violet. Animal the same as in typical Jutela. +MUTELA ROSTRATA Rang. *Tridina rostrata RANG, Nouv. Ann. Mus., 1835, p. 316.—* Potirz and MIcHaup, Gall. Moll., 1844, p. 147, pl. Lv1, fig. 1. “Spatha rostrata VON MARTENS, Mal. Bl., XIII, 1866, p. 11. *Mutela rostrata JICKELI, Faun., 1874, p. 269.—* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 312.—* Pmre., Conch. Sam., III, 1890, p. 187. * Mutelina rostrata BOURGUIGNAT, Bull. Soc. Zool. de Fr., II, 1886, p. 488. *Tridina celestis LEA, Syn., 1836, p.57; * Tr. Am. Phil. Soc., VI, 1838, p. 82, pl. x x11, fig. 70; *Obs., II, 1838, p. 82, pl. xxu1, fig. 70.—* TRoscHEL, Arch. fiir Nat., V, 1839, Pt. 2, p. 239.—* HANLEY, Biv. Shells, 1843, p. 225.—* CaTLow and REEVE, Conch. Nom., 1845, p. 68.—* TroscHEL, Arch. fiir Nat., XIII, 1847, I, p. 273.— * SOWERBY, Conch. Icon., XVI, 1868, pl. 1, fig. 3. *Platiris (Spatha) celestis LuA, Syn., 1838, p.33; 1852, p.55; 1870, p. 89. *Mutela celestis H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 506.—* CLEssin, Conch. Cab. Ano., 1876, p. 193, pl. xxv, figs. 1, 2.—* PTE, Conch. Sam., III, 1890, p. 187. Tropical Africa. Subgenus PSEUDOMUTELA Simpson, 1900. (Type, Mycetopus plicatus Sowerby.') Shell rather thin, elongate, wide, round and gaping behind, cut away and gaping at the anterior base; beaks low; surface rudely sulcate; a series of irregular nodulous projections extends down the low posterior ridge; hinge edentulous, with a kind of faint, broken internal ligament, with a wide prismatic streak behind; muscle sears distinct, united, the anterior protractor, however, separated and irregular; nacre lurid violet, iridescent behind. tMUTELA PLICATA Sowerby. * Mycetopus plicatus SOwERBY, Conch. Icon., XVI, 1868, pl. 11, fig. 5; Icon. XVI, 1868, pl. 11. fig. 3.—* FiscuEr, Jl. de Conch., XX XVIII, 1890, p. 8.—* PeTEL, Conch, Sam., III, 1890, p. 187. *Platiris (Mycetopus) plicatus LEA, Syn., 1870, p. 90. * Mutela plicata JICKELI, Faun. Moll. N. Ost-Af., 1874, p. 270. Locality unknown, but Africa, no doubt. Sowerby credits it to Gray’s manuscript in the British Museum. 1This is certainly not a Mycetopoda, but is evidently nearer Mutela than anything. Ihave placed it in that group as a subgenus, though it may be worthy of generic rank. 906 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. SXU The following are unfigured Mutelas: *Mutela lavigerina BOURGUIGNAT, Un. and Ir., 1886, p.26. Lake Tanganyika. *Mutela moineli BOURGUIGNAT, Un. et Ir., 1886, p.27. Lake Tanganyika. * Mutela subdiaphana BouRGUIGNAT, Moll. Fluv. Ny., 1883, p.5. Vietoria Nyanza. * Mutelina thottont ROCHEBRUNE, Bull. Soc. Mal. Fr., III, 1886, p.7. Kongo. * Mutelina legumen ROCHEBRUNE, Bull. Soc. Mal. Fr., III, 1886, p.6. Kongo. * Mutelina mabilli ROCHEBRUNE, Bull. Soc. Mal. Fr., III, 1886, p.7. Kongo. *Mutelina paludicola ROCHEBRUNE, Bull. Soc. Mal. Fr., Ii, 1886, p. 8. * Mutelina prasina ROCHEBRUNE, Bull. Soe. Mal. Fr., ITI, 1886, p.7. Kongo. * Tridina welwitschii MORELET, Voy. de Angola, 1868, p. 98. Genus CHELIDONOPSIS Aneey, 1887. (Type, Chelidoneura arietina Rochebrune. ) Chelidoneura ROCHEBRUNE, 8. B. Nat. Fr., 1886, p. 3. Chelidonopsis ANCrY, Conch. Exchange, II, 1887, p. 22. Shell elongated, thin, narrowed in front, gaping on the anterior basal part and winged on the front dorsal portion, rounded behind, with a pinched-up posterior ridge which develops into an open or closed tube near its hinder part; the shell ending in a diamond-shaped gap; epidermis shining slightly, concentrically grooved; hinge-line narrow, straight, with faint vestiges of denticles; a deep furrow inside marks the position of the posterior ridge; muscle scars faint; nacre brilliant, iridescent. Animal unknown. CHELIDONOPSIS ARIETINA Rochebrune. * Chelidoneura arietind ROCHEBRUNE, Bull. Soc. Mal. Fr., III, 1886, p.4, pl.1, figs. 1-4. Gancini, Kongo. +CHELIDONOPSIS HIRUNDO von Martens. * Spatha hirundo VON MARTENS, 8. B. Nat. Fr., 1881, p. 122; *Conch. Mitth., III, 1885?, p. 139, pl. xxvu1;! Conch. Mitth., II, 1883, p. 139, pl. xxvir. * Spatha (Mutela) hirundo ROCHEBRUNE, Bull. Soc. Mal., Fr., ITI, 1886, p. 2, pl. 1, figs. 5, 6. Chelidoneura hirundo VON MARTENS, 8S. B. Nat. Fr., 1886, p.161, pl.1, figs. 5, 6. Kongo region. Genus BRAZZAA Bourguignat, 1885. (Type, Brazzwa anceyt Bourguignat. *) Brazzwa BOURGUIGNAT, Esp. Nouv. et Gen Nouv., 1885, p. 321. Shell thin, transparent, brilliant wine-colored, elliptical, greatly inflated, with a slight post-dorsal wing, and a high double posterior ridge; beaks smooth, compressed, but the region below them full; 1 Probably the young of arietina. 2This appears to be a valid genus, belonging to the Mutelidw. I copy for the most part Bourguignat’s description, which leaves out some essential characters. I have neyer seen any of the species. No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 907 hinge edentulous, filiform, with LO Heemnenres. one internal, a winen external; there are three groups of muscular impressions aa several dorsal scars running in a row from the beak forward and downward; upper border of the left valve projecting over that of the right, forming @ SINUOUS Wing. Animal unknown. BRAZZAA ANCEYI Bourguignat. * Brazzea anceyt BOURGUIGNAT, Esp. Ouk. et Tan., 1885, p. 33; *Icon., 1888, pl. XXvill, figs. 1-4.—* von Martens, Besch., 1897, p. 258. * Brazzea eximia BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 57; *Icon., 1888, pl. XXEX, fig. 5. Lake Tanganyika. BRAZZHA BOURGUIGNATI Bourguignat. * Brazzea bourguignati BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 58; *Icon., 1888, pl. xxviu, figs. 5, 6. Lake Tanganyika. BRAZZAHA ELONGATA Bourguignat. * Brazzwa elongata BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 51; *Icon., 1888, pl. MEK, fies, 2) 3. Lake Tanganyika. BRAZZ/EA COULBOISI Bourguignat. * Brazzea coulboisi BOURGUIGNAT, Un. et Ir, Tan., 1886, p. 50; *Icon., 1888, pl. XXIX, fig. 1. Lake Tanganyika. BRAZZAA VENTROSA Pee eet * Brazzea ventrosa BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 45; *Icon., 1888, pl. XXIX, fig. 4. Lake Tanganyika. The following are unfigured species: Brazzea randabeli BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 46. Brazzea moineti BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 47 Brazzea jourdyi BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 48. Brazzwa charbonnieri BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 52. Brazzea lavigerina BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 55. Brazzea bridouxi BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 54. Brazzea newcombiana BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 55. All from Lake Tanganyika. Genus PLEIODON Conrad, 1854. (Type, Pleiodon ovatus Swainson.) Pleiodon ConRaD, Jl. Ac-N. Sci. Phila., VII, 1834, p. 178. Shell elliptical, inflated, solid, with a rounded posterior ridge, and full, peared beaks; epidermis smooth, SUID Boner ally SEMIS 5 hinge 1Said He Tourer fo he of To bert in litt, 908 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIi. plate wide, nearly straight, set with strong, irregular, taxodont teeth throughout its length; beak cavities moderate, with a row of dorsal sears running obliquely downward and forward; anterior and posterior muscle scars well defined. Animal with the palpi semilunar, united to the mantle by a straight border, longer than wide; outer ails generally larger than the inner, united their whole length to the mantle; inner united to the abdominal sac; genitalia occupying each side the lateral part of the visceral mass as far forward as the foot; mantle closed below the branchial siphon, and united into branchial and anal siphons; anal opening rather small; branchial opening large, the two separated by a solid bridge which solders together the extremities of the four branchiwe,; both orifices have a thickened inner edge, the branchial being furnished with short tubercles or granules; mantle united below posteriorly one-fourth its length; foot large and strong; adductor muscles strong (Pelseneer). Subgenus PLEIODON Conrad. Characters as in the genus. tPLEIODON OVATUS Swainson. * Tridina ovata SWAINSON, Phil. Mag., LXI, 1823, p. 112.—* OkENn, Isis, 1834, p. 458.—* REEVE, Conch. Syst., I, 1841, p. 122, pl. xc111.—* HANLEY, Biv. Shells, 1843, p. 225.—* CaTtLow and REEVE, Conch. Nom., 1845, p.68; *Elements of Conch., I, 1860, pl. xxx1u1, fig. 184.—* CLESsIN, Conch. Cab. Ano., 1875, p. 230, pl. LXxX, fig. 2; LX XI, fig. 2. * Platiris (Iridina) ovata Lra, Syn., 1838, p. 33; 1852, p. 54; 1870, p. 88. * Pleiodon ovata CONRAD, Jl. Ac. Nat. Sci. Phila., VII, 1854, p. 298; *H. and A. ADAMS, Gen. Rec. Moll., IL, 1857, p. 506. * Pleiodon ovatus CHENU, Man., 1859, II, p. 148, fig. 728.—*SowrErsy, Conch. Icon., XVI, 1866, pl. 1, fig. 1. —* Pa Te, Conch. Bane ITI, 1890, p. 188. Tridina exotica CHILDREN, Brande’s J]., XV, 1823, p. * Pleiodon ee iei CONRAD, Jl. Ac. Nat. Sei. Phila, VI, 1834, p. 13, pl. x11; VII, 1854, p. 298. * Margarita (Pleiodon) macmurtriet LEA, Syn., 1836, p. 55. * Tridina valeus JAY, Cat., 1850, p. 70.! *Mutela valeus H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p.506.—* Pa TEL, Conch. Sam., III, 1890, p. 187. * Platiris (Iridina) leati LEA, Syn., 1852, p.54; 1870, p. 88.2 * Pleiodon leaiti H. and A. Adams, Gen. Rec. Moll., II, 1857, p. 506.—* P&TEL, Conch. Sam., III, 1890, p. 188. * Pleiodon splendens CONRAD, J]. Ac. Nat. Sci. Phila., VII, 1854, p. 299. * Tridina splendida CHENU, Ill. Conch., 1858, pl.1, figs. 2, 2a, 2b, 2e, 2d. West Africa. The following are unfigured species of Pleiodon: * Pleiodon diolibanus BOURGUIGNAT, Moll. Egypt and Ab., 1879, p. 47. * Pleiodon elongatus BOURGUIGNAT, Moll. Kg ‘gypt and Ab., 1879, p.47. Senegal River. 1Said to be of ene *Presented to Dr. Lea by Sowerby as Jridina leaii. Lea believes it to be a young. ovatus. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. ~ 909 * Pleiodon letourneauxianus BouURGUIGNAT, Moll. Egypt and Ab., 1879, p. 48. Senegal River. * Pleiodon pachyodon BOURGUIGNAT, Moll. Egypt and Ab., 1879, p. 43. Subgenus CAMERONIA Bourguignat, 1879. (Type, Iridina spekti Woodward.) Anterior end of the hinge plate usually (not always) split up length- wise into irregular teeth, which bear tubercles on their surfaces.! The mantle of P. spekii has a decided palleal sinus behind. (Pelseneer.) +tPLEIODON SPEKII Woodward. * Tridina (Pleiodon) spekiti WOODWARD, Pr. Zool. Soc. Lond., 1859, p. 348, pl. XLVII, fig.2; *Ann. and Mag., V, 1860, p. 337. * Pleiodon spekit SowERBY, Conch. Icon., X VI, 1866, pl. 1, fig. 2. * Platiris (Iridina) spekii LEA, Syn., 1870, p. 88. * Cameronia spekii BOURGUIGNAT, Moll. Egypt and Ab., 1879, p. 43. * Tridina spekti CLESSIN, Conch. Cab. Ano., 1875, p. 232, pl. LXX, fig. 2. * Pleiodon (Cameronia) spekiti CROSSE, J1. de Conch, X XIX, 1881, p. 180. * Pleiodon spekit SMITH, Proc. Zool. Soc., 1881, p. 296, pl. Xxxrv, figs. 31, 3la.— * P&TEL, Conch. Sam., III, 1890, p. 188. * Mutela (Iridina) spekit VON MARTENS, Besch., 1897, p. 256. * Cameronia gigantea BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 68; *Icon. Mal., 1888, pl. Xxxxv, fig. 1. * Cameronia admirabilis BOURGUIGNAT, Un.et Ir. Tan., 1886, p. 69; *Icon. Mal., 1888, pl. XxxIV, fig. 1. * Cameronia coulboisti BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 77; *Icon. Mal., 1888, pl. xx x1, figs. 1, 2. Cameronia josseti BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 82; *Icon. Mal., 1888, pl. xxxu, fig. 3. e *Cameronia paradoxa BOURGUIGNAT, Un. et Ir. Tan., 1886, p.,91; *Icon. Mal., 1888, pl. xxxu, fig. 1. Lake Tanganyika. PLEIODON LANDEAUI Bourguignat. * Cameronia landeaut BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 74; *Icon. Mal., 1888, pl. xxxI, fig. 3.” Lake Tanganyika. PLEIODON BOURGUIGNATI Bourguignat.® * Cameronia bourguignati BOURGUIGNAT, Esp. Ouk., 1885, p.26; *Icon. Mal., 1888, pl. XXxIII. Lake Tanganyika. The following are unfigured species of Cameronia. * Cameronia anceyi BOURGUIGNAT, Esp. Ouk., 1885, p.30. Lake Tanganyika. * Cameronia bridouxt BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 71. * Cameronia charbonnieri BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 83. Lake Tanganyika. 1The splitting up of the anterior end of the hinge is altogether irregular, and may be due to disease, as the hinge is sometimes entire. 2Probably a short, diseased spekii. 3Credited to Ancey in litt. by Bourguignat, 910 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. * Cameronia complanata BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 76. Lake Tan- ganyika. *Cameronia dromauxit BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 84. Lake Tan- ganyika, * Cameronia giraudi BOURGUIGNAY?, Nat. Prod., 1885, p.107. Lake Tanganyika. *Cameronia guillemeti BoURGUIGNAT, Un. et Ir. Tan., 1886, p. 72. Lake Tan- ganyika. *Cameronia jouberti BOURGUINAT, Un. et Ir. Tan., 1886, p. 88. Lake Tan- ganyika. * Cameronia lavigirina BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 85. Lake Tan- ganyika. *Cameronia locardiana BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 78. Lake Tan- ganyika. * Cameronia marioniana BOURGUIGNAT, Esp. Ouk., 1885, p.28. Lake Tanganyika. * Cameronia mabilliana BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 86. Lake Tan- ganyika. *Cameronia moineti BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 89. Lake Tan- ganyika. ‘Cameronia pulchella BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 73. Lake Tan- ganyika. * Cameronia obtusa BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 75. Lake Tanganyika. * Cameronia randebeli BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 90. Lake Tan- ganyika. *Cameronia revoiliana BOURGUIGNAT, Moll. Tan., 1885, p.107. Lake Tanganyika. *Cameronia vynckiti BOURGUIGNAT, Un. et Ir. Tan., 1886, p. 81. Lake Tan- ganyika. Genus MONOCONDYLAAA @WOrbigny, 1835. (Type, Monocondylwa paraguayana @Orbigny. ) Aplodon SPix (not of Rafinesque, 1818), Test. Fluv. Bras., 1827, pl. xxv, figs. 1, 2. Monocondylwa D’ORBIGNY, Guerin Mag., 1835, p. 37. Spixoconcha PILSBRY, Nautilus, VII, 1893, p. 30. Shell rounded to obovate, rather solid, with a low, posterior ridge which is generally bordered by two or more dark, radiating bands; epidermis dull olive green to olive brown, cloth like; hinge with two irregular teeth under the beak in the left valve and two in the right, the posterior under the beak, the anterior in front of it and interlocking with those of the left valve, the whole generally more or less tuberculate; nacre soft, silvery, with iridescent shades; anterior scars united; pos- terior indistinct; prismatic layer wide. Animal with the marsupium occupying the whole length of the inner branchie; gills very large, curved below, inner very much the larger, united the whole length of the abdominal sac; palpi small, round below, attached along their upper edge; mantle thick, greatly thickened at the edge, with a few papille in front of the branchial opening below; branchial opening large, with numerous small knob-like papillae; anal opening large, without papillw, separated completely from the branchial opening by a bridge; superanal opening not closed below. (Group of Monocondylewa guarayana.) Shell obovate, inflated, solid, often slightly produced just behind the center of the base; beaks full, turned inward and forward. NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 9{1 +MONOCONDYLA®A GUARAYANA d’Orbigny. “ Monocondylaa guarayana D’ORBIGNY, Guer. Mag., 1835, p. 38; *Voy. Am. Mer., 1843, p. 614, pl. Lxvin, figs. 4-5.—* H. and A. Abams, Gen. Rec. Moll,, II, 1857, poOL MS ply exalt, he.) 3. CBENU, Mamn., 1859" Il, p. 145) fie. 715.— *PAHTEL, Conch. Sam., III, 1890, p. 174. * Margarita (Monocondylwa) guarayana LEA, Syn., 1838, p. 28. “Unio guarayana HANLEY, Test. Moll., 1842, p. 213; * Biv. Shells, 1843, p. 213, pl. XxUI, fig. 14.—* SowrErBy, Conch. Icon., XVI, 1868, pl. xev1, fig. 524. * Margaron (Monocondylwa) guarayana LRA, Syn., 1852, p. 45; 1870, p. 73. Bolivia. MONOCONDYLA®A INERME Spix. * Aplodon inerme SPix, Test. Fluv. Bras., 1827, p. 32, pl. xxv, figs. 1-2.—* von JHERING, Arch. fiir Nat.,1890, p. 126, pl. 1x, figs. 1-3. South Brazil. tMONOCONDYLAZA PARCHAPPII d’Orbigny. * Moncondylea parchappti D’ORBIGNY, Guer. Mag., 1835, p. 38; * Voy. Am. Mer., 1843, p. 615, pl. LX vIn, figs. 1-3.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p.501.—* Pa TEL, Conch. Sam., III, 1890, p. 174. * Margarita (Monocondylea) parchapptt LEA, Syn., 1838, p. 28. * Unio parchappiti HANLEY, Test. Moll., 1842, p. 212; * Biv. Shells, 1843, p. 212, pl. XXII, fig. 13.—* CaTLow and REEVE, Conch. Nom., 1845, p. 62. * Margaron (Monocondylea) parchappit La, Syn., 1852, p.45; 1870, p. 73. *+ Monocondylwa paztt Lua, Pr. Ac. N. Sci. Phila., X, 1866, p. 34; *J1. Ac. N. Sei. Phila., VI, 1868, p. 273, pl. xxxvI, fig. 88; *Obs., XII, 1869, p. 36, pl. xxxvI, fig. 88.—* CLESSIN, Conch. Cab. Ano., 1876. p. 251, pl. LXxIx, figs. 6-7.—* PaTEL, Conch. Sam., III, 1890, p. 174. * Margaron (Monocondylwa) pazit Lua, Syn., 1870, p. 73. Argentina. +MONOCONDYLAA PARAGUAYANA @d’Orbigny. * Monocondylea paraguayana D’ORBIGNY, Guer. Mag., 1835, p. 37.—* SOWERBY, Conch. Man., 1839, fig. 149.—* D’ORBIGNY, Voy. Am. Mer., 1843, p. 612, pl. Lxx, figs. 5-7.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 501.—* CLEssin, Conch. Cab. Ano., 1876, p. 245, pl. LXxv1H1, figs. 1, 2.—* PaTrL, Conch. Sam., III, 1890, p. 174. * Margarita (Margaritana) paraguayana LEA, Syn., 1838, p. 27. * Unio paraguayana HANLEY, Test. Moll., 1842, p. 212; * Biv. Shells, 1843, p. 212, pl. XXII, fig. 17.—* SOwWERBY, Conch. Icon., X VI, 1866, pl. LI, fig. 273. * Margaron (Monocondylwa) paraguayana LEA, Syn., 1852, p.45; 1870, p. 73. * Unio paraguayanus CATLOW and REEVE, Conch. Nom., 1845, p. 62. *+ Monocondylwa minuana D’ORBIGNY, Guer. Mag., 1835, p. 37; *“ Voy. Am. Mer., 1843, p. 612, pl.Lxx, figs. 8-10.—* H. and A. ApAms, Gen. Rec. Moll., II, 1857, p. 501.—* P&TEL, Conch. Sam., III, 1890, p. 174. * Margarita (Margaritana) minuana LEA, Syn., 1838, p. 28. * Margaron (Monocondylea) minuana LEA, Syn., 1852, p.45; 1870, p. 73. * Unio minuanus HANLEY, Test. Moll., 1842, p. 213; * Biv. Shells, 1543, p. 213, pl. XXII, fig. 18.—* SowERBY, Conch. Icon., XVI, 1868, pl. Xct, fig. 497. Rio de la Plata drainage. 912 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XX. tMONOCONDYLAA RETICULATA Moricand. * Monocondyiwa reticulata MORICAND, Rey. et Mag., X, 1858, p. 453, pl. xv, fig. 2. * Margaron (Monocondylea) reticulata LEa, Syn., 1870, p. 72. * Margaritana reticulata Pa TEL, Conch. Sam., III, 1890, p. 173. * Unio reticulatus SOwERBY, Conch. Icon., XVI, 1868, pl. LXxxvut, fig. 458. * Aplodon reticulatus VON InERING, Arch. fiir Nat., 1893, p. 115. Brazil. MONOCONDYLA2A COSTULATA Moricand. * Monocondylwa costulata MORICAND, Rev. et Mag. Zool., X, 1858, p. 453, pl. xv, fig. 1; * SowERBY, Conch. Icon., XVI, 1868, pl. LXxxviit, fig. 470.—* PaTreL, Conch. Sam., III, 1890, p. 174. *Margaron (Monocondylwa) costulata Lea, Syn., 1870, p. 72. Brazil. +t MONOCONDYLAA CORRIENTESENSIS d’Orbigny. * Monocondylaa corrientesensis D ORBIGNY, Guer. Mag., 1835, p.38; * Voy. Am. Mer., 1843, p. 615, pl. LX vu, figs. 8-10.—* H. and A. ApAms, Gen. Rec. Moll., II, 1857, p. 501.—* CLEssIN, Conch. Cab. Ano., 1876, p. 246, pl. Lxxvitl, figs. 3, 4.— *PamTEL, Conch. Sam., IIT, 1890, p. 174. *Margarita (Monocondylwa) corrientesensis LEA, Syn., 1838, p. 28. *Unio corrientesensis HANLEY, Test. Moll., 1842, p. 212; * Biv. Shells, 1843, p. 212, pl. xx, fig. 15.—* CaTLow and REEVE, Conch. Nom., 1845, p.57.—* SOWERBY, Conch. Icon., XVI, 1868, pl. xem, fig. 509. *Margaron (Monocondylea) corrientesensis LEA, Syn., 1852, p.45; 1870, p. 73. Argentina. MONOCONDYLAA JASPIDEA Hupe. *Unio jaspidea Hupx, An. Nouv., III, 1857, p. 83, pl. x viv, fig. 2.! *Margaron ( Unio?) jaspideus Lea, Syn., 1870, p. 37. Amazon. (Group of Monocondylaa franciscana.) Shell moderately inflated, lenticular, rounded, not very solid; some- times slightly produced at the post basal region; beaks rather low. +t MONOCONDYLZA FRANCISCANA Moricand. * Unio (Monocondylwa) franciscana MORICAND, Mem. Soc. Hist. Nat. Gen., VIII, 1837, p. 39, pl. 1, figs. 14-17.—* TrROSCHEL, Arch. fiir Nat., VIII, 1842, Pt. 2, p. 404. : * Margarita (Margaritana) franciscana LEA, Syn., 18388, p. 35. * Margaron (Monocondylea) franciscana LEA, Syn., 1852, p. 45; 1870, p. 72. * Monocondylea franciscana H. and A. ADAMS, Gen. Rec. Moll., IT, 1857, p. 501.— *CLESSIN, Conch. Cab. Ano., 1876, p. 251, pl. LXxtv, figs. 4, 5.—* P&TEL, Conch. Sam., ITI, 1890, p. 174. * Aplodon franciscana VON IHERING, Arch. fiir Nat., 1893, p. 115. Brazil. + MONOCONDYLAA LENTIFORMIS Lea. * Monocondylea lentiformis Lra, Pr. Ac. N. Sci. Phila., X, 1866, p. 34; *Jl. Ac. N. Sci. Phila., VI, 1868, p. 272, pl. xxxvi, fig. 86; *Obs., XII, 1869, p. 32, pl]. Xx xvI, fig. 86.—*CLESSIN, Conch. Cab. Ano., 1876, p. 250, pl. LXxIx, figs. 4, 5.— * Pa&TEL, Conch. Sam., 1890, p. 174. ''The figure shows the teeth, which appear to be those of a Monocondylea. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 913 * Margaron (Monocondylea) lentiformis LEA, Syn., 1870, p. 72. * Aplodon lentiformis VON IHERING, Arch. fiir. Nat., 1893, p. 67.—* NEHRING, J. de Conch., 1894, p. 82. Southern Brazil. The following species is unknown to me: * Monocondylea tamsana DUNKER, Mal. B1., V, 1858, p. 226. Genus IHERINGELLA Pilsbry, 1898. (Type, Plagiodon isocardioides Lea, ) Plagiodon Lma, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 79. Theringella PrussBry, Nautilus, VII, 1893, p. 30. Shell solid, inflated, rounded to rhomboid in outline, with a more or less developed posterior ridge; beaks high, curved inward and forward, without sculpture; epidermis dull olive, cloth-like; hinge teeth imper- fectly developed, nodulous or more or less broken into denticles, there being an irregular tooth in the left valve under the beak, sometimes partially bifid, and two in the right valve, with the pit between them under the beak; anterior muscle scars deep, partially united; posterior sears shallow; nacre soft, bluish silvery, iridescent behind. Animal unknown. (Group of [heringella isocardioides.) Shell rhomboid or tsocardia shaped, with a high, distinct, strongly curved posterior ridge; beaks decidedly full and turned forward. tIHERINGELLA ISOCARDIOIDES Lea. * Plagiodon isocardiodes Lea, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 79.' * Plagiodon isocardioides Lea, Obs., VI, 1857, p. 38, pl. xxxut, fig. 32; *Jl. Ac. N. Sci. Phila., III, 1858, p.318, pl. Xxxt1, fig. 32.—* Kuster, Conch. Cab. Unio, 1862, p. 292, pl. xcvul, figs. 8-10. * Unio isocardioides SOwWERBY, Conch. Icon., XVI, 1868, pl. xc, fig. 484.—* PaTEL, Conch. Sam., III, 1890, p. 156. 2 * Margaron (Plagiodon) isocardioides LEA, Syn., 1870, p. 71. Rio de la Plata; Eastern Peru?. IHERINGELLA SEMISULCATA H. Adams. * Monocondylwa (Plagiodon) semisulcata H. ADAMS, Pr. Zool. Soc. Lond., 1870, p. 376, pl. Xx VU, fig. 3. Eastern Peru. (Group of Theringella rotundata.) Shell somewhat rounded, sublenticular, posterior ridge rather low. +IHERINGELLA ROTUNDATA Mousson. * Plagiodon rotundatus Mousson, Mal. Bl., XVI, 1869, p. 187.—* Premrer, Nov. Conch., IV, 1876, p. 139, pl. cxxXt1, figs. 8, 9. South America. 1 Printed as above. A typographical error, probably. Proc. N. M. vol. xxii 58 914 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL. IHERINGELLA BALZANI von lhering. * Plagiodon balzani VON IHERING, Arch. fiir Nat., 1893, p. 69, pl. 11, fig. 3. Rio Paraguay; San Paulo, Brazil. Genus FOSSULA Lea, 1870. (Type, Monocondylea fossiculifera VOrbigny.) Fossula LEA, Syn., 1870, p. 72 (footnote). Shell obovate, inflated, solid, with rather high beaks and a low posterior ridge; epidermis olive-brown, somewhat smooth, sometimes slightly rayed; there is an irregular tooth in the left valve under the beak, and behind it a cavity; in the right valve there is a cavity under the beak, and an irregular tooth in front of and another behind it; the teeth and cavities are generally partly covered with brownish or amber-colored matter, and more or less pitted; anterior cicatrices well marked, united; posterior faint; prismatic border wide. Animal unknown. +FOSSULA FOSSICULIFERA d’Orbigny. * Monocondylwa fossiculifera D’ORBIGNY, Guer. Mag., 1835, p.38; * Voy. Am. Mer., 1843, p. 614, pl. LX xx, figs. 5-7.—* H. and. A. ApAms, Gen. Ree. Moll., II, 1857, p. 501.—* CLEessrn, Conch. Cab. Ano., 1876, p. 249, pl. XLXIx, figs. 1, 2.—-* PmTEL, Conch. Sam., III, 1890, p. 174. * Margarita (Margaritana) fossiculifera Lea, Syn., 1838, p. 28. *Unio fossiculifera LANLEY, Test. Moll., 1842, p. 213; * Biv. Shells, 1843, p. 213, pl. Xxil, fig. 19.—* SowERBY, Conch. Icon., X VI, 1868, pl. xcv1, fig. 521. * Margaron (Monocondylaa) fossiculifera Lra, Syn., 1852, p. 45; 1870, p. 73. * Fossula fossiculifera VON IMERING, Arch. fiir Nat., 1893, p. 64, pl. 11, fig. 2. * Unio fossiculiferus CATLOW and REEVE, Conch. Nom., 1845, p. 59. * Anodonta fusciculifera PazTEL, Conch. Sam., ITI, 1890, p. 179. Parana River, South America. FOSSULA BALZANI von Ihering. * Fossula balzani VON IHERING, Arch. fiir Nat., 1893, p. 65, pl. 111, fig. 1. Rio Paraguay; Rio Apae, South America. Genus LEILA Gray, 1840. (Type, Anodonta blainvilleana Lea. ) Columba LEA (not Columba Linnieus, aves, 1758), Tr. Am. Phil. Soc., V, 1833, p. 78. Leila Gray, Syn. Brit. Mus., 1840, p. 142. Shell large, obovate, inflated, with a straight hinge line which is produced into a slight wing before and behind, tbe posterior end bluntly pointed and somewhat truncate above, with a faint posterior ridge; beaks full, smooth, epidermis olive, generally smooth; hinge edentulous; beak cavities rather shallow; dorsal scars small and numerous, running in a straight line from behind the beaks downward and forward; posterior muscle scars united, large; palleal line gen- erally showing a sinus.! ' Conchologically this genus seems to be very closely related to Glabaris, especially to the group of G. trapesialis. Some of the shells of that genus have a slight dorsal wing in front and behind, and traces of a palleal sinus. NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 915 Animal having the mantle united behind into two short, separate, contractile siphons, according to Gray.! + LEILA BLAINVILLEANA Lea.2 * Anodonta blainvilleana Lea, Tr. Am. Phil. Soc., V, 1834, p. 77, pl. xu, fig. 35; *Obs., I, 1834, p. 189, pl. xu, fig. 35.—* Haney, Test. Moll., 1842, p. 229; * Biv. Shells, 1843, p. 222, pl. xxiv, fig. 18. * Margarita (Anodonta) blainvilleana LEa, Syn., 1836, p. 53; 1838, p. 31. * Anodon blainvilleana CATLOW and REEVE, Conch. Nom., 1845, p. 66. * Margaron (Anodonta) blainvilleana Lra, Syn., 1852, p. 52. * Leila blainvilleana H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 507; ITI, pl. CXIX, figs. 4, 4a.—* CHENU, Man., 1859, II, p. 148, fig. 730. * Columba blainvilleana CLESSIN, Conch. Cab. Ano., 1876, p. 253, pl. LXxxv1, figs. 1, 2.—* P&TEL, Conch. Sam., III, 1850, p. 188. *“Anodon parishiti GRAY, Pr. Zool. Soc. Lond., 1834, p. 57.°—* MOLLER, Syn. Noy. Gen., 1836, p. 195.—* CaTLow and REEVE, Conch. Nom., 1845, p. 67. *Margarita (Anodonta) parishti LEA, Syn., 1836, p.53; 1838, p. 31. * Anodonta parishii HANLEY, Test. Moll., 1842, p. 222; * Biv. Shells, 1843, p. 222.— *P#TEL, Conch. Sam., III, 1890, p. 183. *Margaron (Anodonta) parishtt LEA, Syn., 1852, p. 52. “Leila parishit H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 507. *Anodon hians SOwERBY, Conch. Icon., X VII, 1867, pl. 1v, fig. 8. Peru; Brazil; south to Argentina. + LEILA ESULA d’Orbigny. *Tridina esula D’ORBIGNY, Guerin Mag., 1835, p.43; “Voy. Am. Mer., 1843, p. 597. Anodonta esula JAN, Charpentier and Jan, Cat., 1837, p. 24.4 * Margarita (Anodonta) esula LEA, Syn., 1838, p. 32. *Margaron (Anodonta) esula LEA, Syn., 1852, p. 52. *Margaron (Columba) esula LEA, Syn., 1870, p. 86. * Leila esula H. and A. ADAMS, Gen. Rec. Mol1., II, 1857, p. 507. “Anodonta arcuata HANLEY, Biv. Shells, 1843, p. 223. *Leila pulvinata Hups#, Moll. Nouv., III, 1857, p. 90, pl. xx, fig. 1. “Columba pulvinata CLESSIN, Conch. Cab. Ano., 1876, p. 255, pl. LXxv, figs. 1, 2.— * PETEL, Conch. Sam., III, 1890, p. 188. * Anodon pulvinatus SOWERBY, Conch. Icon., XVII, 1867, pl. v, fig. 10. “Leila castelnaudi Hupr, Moll. Nouv., III, 1857, p. 91, pl. xrx, fig. 1.—* von Mar- TENS, Mal. Bl., XV, 1868, p. 201. “Anodon castelnaudt SOWERBY, Conch. Icon., X VII, 1868, pl. xx, fig. 79. “Columba castelnaudit CLESSIN, Conch. Cab. Ano., 1876, p. 254, pl. Lxxxtv, figs. 1, 2.—* P&TEL, Conch. Sam., III, 1890, p. 188. Bolivia; Brazil; Paraguay. 1Ann. and Mag. Nat. Hist., VI, p. 316. 2The volume of the transactions in which Lea’s name was published was issued, according to Scudder, in August or September, 1834. Gray read the paper contain- ing the description of his Anodon parishii before the Zoological Society on July 8 of the same year, and the date of publication of that volume of the proceedings is 1834. As I do not know just when it appeared, and as Lea’s is the better known name, I retain the latter. 3Gray states in a letter to Lea, November, 1834, that his 4. parishii and Lea’s blainvilliana are the same. 4 According to Lea. I have not seen this paper. The species is quite commonly credited to Jan, but it was published by @Orbigny under the name of Jridina esula in 1835, and I am not aware that Jan described it earlier than 1837. 916 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIL LEILA SPIXII von Ihering. * Anodon giganteus SPIX (part), Test. Fluy. Bras., 1827, p. 27, pl. xix, fig. 1 (young). * Anodonta gigantea KuSTER, Conch. Cab. Ano. 1853, p. 6, pl. 1, fig. 2 (young). * Columba spixii VON THERING, Arch. fiir Nat., 1890, p. 135, pl. 1x, fig. 4. Amazon River. Genus GLABARIS Gray, 1847. (Type, Anodonta exotica Lamarck.) Glabaris GRAY, Pr. Zool. Soc. Lond., 1847, p. 197. Shell rounded to elongated, inflated, subsolid; beaks full, smooth; epidermis smooth or clothlike, rarely having faint rays; hinge line. straight or slightly curved, edentulous, sometimes a little sinuous, the escutcheon distinct and large; nacre soft tinted, the prismatic border wide and well defined. Animal with the marsupium occupying the whole of the inner branchiz, which are united their entire length to the abdominal sac; palpi generally semicircular or kidney shaped; attached along their entire upper length, not projecting posteriorly; branchial and anal openings with or without papille, not united into siphons in the speci- mens examined, separated by a strong bridge; superanal opening not closed below. Section GLABARIS Gray, 1847 (Type, Anodonta exotica Lamarck.) Shell rounded to elliptical; posterior ridge low or wanting. (Group of Glabaris patagonicus.) Shell solid, inflated, obovate, usually somewhat produced behind the center of the base; beaks quite full, projecting above the hinge line; epidermis olive brown, rather smooth, generally rayless; anterior muscle sears well defined. Animal with the gills large, rounded below; palpi rather large; mantle thickened at edge and furnished with palpi in front of the branchial opening; branchial opening large, with numerous minute papille; anal opening large, with no papille. +GLABARIS PATAGONICUS Lamarck. * Anodonta patagonica LAMARCK, An. sans. Vert., VI, 1819, p.88.—* LaMARCK, Ene. Méth., II, 1827, p. 147, pl. 2U3, fig. 1.—* Stark, Nat. Hist., II, 1828, p. 89.— *HANLEY, Test. Moll., 1842, p. 221; *Biv. Shells, 1843, p.221.—*KusTER,Conch. | Cab. Ano., 1853, p. 50, pl. x11, fig. 2.—*H. and A. ADams, Gen. Rec. Moll., Il, — 1857, p.504.—* VON MARTENS, Mal. Blatt., XV, 1868, p. 198.—*PaTEL, Conch. | Sam., III, 1890, p. 183. *Margarita (Anodonta) patagonica Lma, Syn., 1836, p. 52; 1838, p. 31. * 4nodon patagonica CATLOW. and REEVE, Conch. Nom., 1845, p. 67. *Margaron (Anodonta) patagonica Lea, Syn., 1852, p. 51; 1870, p. 82. NO.1205. SYNOPSIS OF THE NAIADES—SIMPSON. O17 *Anodon trapezeus SPIx, Test. Fluv. Bras., 1827, p. 28, pl. xx, fig. 1. * Anodonta trapezeum D’ORBIGNY, Voy. Am. Mer., 1843, pp. 6, 19. * Anodonta trapezea KUSTER, Conch. Cab. Ano., 1853, p. 7, fig. 3. * Glabaris trapezea VON JHERING, Arch. fiir Naturg., 1893, p.57. *t Anodonta lato-marginata Lea, Tr. Am. Phil. Soc., V, 1834, p. 76, pl. x11, fig. 34; * Obs., I, 1834, p. 188, pl. xu, fig. 34.—* Haney. Test. Moll., 1842, p.221; * Biv. Shells, 1843, p. 221, pl. xxIv, fig. 14.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 504. —~ CHENU, Man., II, 1859, p. 146, fig. 724.—° CLEssIN, Conch. Cab., 1873, p. 76, pl. XXI, figs. 3, 4. * Margarita (Anodonta) lato-marginata La, Syn., 1836, p.53; 1838, p. 31. * Margaron (Anodonta) lato-marginata LEA, Syn., 1852, p. 51; 1870, p. 82. * Anodon lato-marginatus SOWERBY, Conch. Icon., XVII, 1867, pl. 11, fig. 3. * Anodon lati-marginata CATLOW and REEVE, Conch. Nom., 1845, p. 67. * Anodonta lati-marginata STROBEL, Mat. Mal., Pt. 1, 1874, p. 67.—~* Part, Conch. Sam., III, 1890, p. 181. * Anodonta membranacea D’ORBIGNY, Voy. Am. Mer., 1843, p. 616, pl. LXXxIx, fig. 11. * Anodonta solida KustTER, Conch. Cab. Ano., 1853, p. 50, pl. x11, fig. 1. * @t Anodonta uruguayensis LEA,! Pr. Ac. N. Sci.Phila., IV, 1860, p. 92; * Jl. Ac. N. Sci. Phila.,V, 1863, p. 393, pl. xLvu1, fig. 302; * Obs., X, 1863, p. 29, pl. xLvim, fig. 302.—* CLESSIN, Conch. Cab., 1874, p. 114, pl. xxxvuu, figs. 1, 2.— *SoweERBY, Conch. Icon., XVII, 1870, pl. xxx, fig. 121, * Margaron (Anodonta) uruguayensis LEA, Syn., 1870, p. 83. * Columbia uruguayensis P#TEL, Conch. Sam., III, 1890, p. 188. * Anodonta sinuosa CLESSIN, Conch. Cab. Ano., 1873, p. 90, pl. xx, figs. 1, 2. * Anodonta serpentina CLESSIN, Conch. Cab. Ano., 1876, p. 223, pl. LXXxV, figs. 2, 3.— * P&TEL, Conch. Sam., III, 1890, p. 184. GLABARIS PATAGONICUS var. FELIX Pilsbry. *Glabaris lato-marginatus LEA, var. felix PitsBRy, Pr. Ac. N. Sci. Phila., 1869, p. 563, pl. xxvi, fig. 8. * Southern South America, east of the Andes; the variety in Colonia, Uruguay. GLABARIS CRASSUS Swainson. * Anodon crassus SWAINSON, Zool. Il, 1st ser., III, 1823, pl. cLxvii. * Margarita (Anodonta) crassa LEA, Syn., 1836, p. 235; 1838, p. 32. * Anodonta crassa HANLEY, Test. Moll., 1842, p. 222; * Biv. Shells, 1843, p. 222.— *“H. and A. ApDams, Gen. Rec. Moll., II, 1857, p. 504.—* ParreL, Conch. Sam., III, 1890, p. 178. * Anodon crassa CATLOW and REEVE, Conch. Nom., 1845, p. 66. ~ Margaron (Anodonta) crassa LEA, Syn., 1852, p. 52; 1870, p. 83. Rio de la Plata. + GLABARIS WYMANII Lea. * Anodonta wymanii Lua, Pr. Ac. N. Sci. Phila., IV, 1860, p. 91; * Jl. Ac. N. Sei. Phila., V, 1863, p. 390, pl. xLtv, fig. 294; *Obs., X, 1863, p. 26, pl. xxiv, fig. 294.—* CLESSIN, Conch. Cab. Ano., 1873, p. 104, pl. xxxu, figs. 1, 2.— * PETEL, Conch. Sam., III, 1890, p. 186. ‘An old worn shell—the type—is the only one in the Lea collection, save a few very young that are doubtfully the same. It is a little more inflated than most specimens that are called lato-marginata, but not more than some are, and I hardly think it distinct. 918 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. * Margaron (Anodonta) wymanii LEA, Syn., 1870, p. 80. * Anodon wymani SOwRBY, Conch. Icon., XVII, 1870, pl. xxx, fig. 117. Uruguay River, South America. +GLABARIS SIRIONIS d’Orbigny. * Anodonta sirionis D’ORBIGNY, Mag. Zool., 1835, p. 40.—* HANLEY, Test. Moll., 1842, p. 221; * Biv. Shells, 1843, p. 221.—* p’ORBIGNY, Voy. Am. Mer., 1843, p. 615, pl. Lxxiv, figs. 4-6; Lxxx, figs. 1-4.—*H. and A. ADaMs, Gen. Ree. Moll., II, 1857, p. 504.—* CLessrn, Conch. Cab. Ano., 1874, p. 128, pl. X11, figs. 1, 2.—* Pw TEL, Conch. Sam., III, 1890, p. 184. * Margarita (Anodonta) sirionis LEA, Syn., 1838, p. 31. * Anodon sirionis CATLOW and REEVE, Conch. Nom., 1845, p. 68. * Margaron (Anodonta) sirionis Lea, Syn., 1852, p. 51; 1870, p. 82. * Anodonta ferrarisii D’ORBIGNY, Guer. Mag., 1835, p. 40. Rio de la Plata + GLABARIS PAZII Lea. y * Anodonta pazii LEA, Pr. Ac. N. Sci. Phila., X, 1866, p.35; * Jl. Ac. N. Sci. Phila., VI, 1868, p. 274, pl. xxxvi, fig. 87; *Obs., XII, 1869, pl. xxxvi, fig. 87.— @ * CLESSIN, Conch. Cab. Ano., 1874, p. 139, pl. xLim, figs. 3,4.—* P&TEL,Conch. — Sam., III, 1890, p. 183. * Margaron (Anodonta) pazit Lra, Syn., 1870, p. 81. South America. +GLABARIS RUBICUNDUS Lea. * Anodonta rubicunda LEa, Pr. Ac. N. Sci. Phila., IV, 1860, p. 92; * Jl. Ac. N. Sei. Phila., V, 1863, p.392, pl. xLvi, fig. 299; * Obs., X, 1863, p. 28, pl. XLVI, fig. 299.—* CLESSIN, Conch. Cab. Ano., 1876, p. 106, pl. Xxx, figs. 5, 6.—* PATEL, Conch. Sam., III, 1890, p. 184. *Anodon rubicundus SOWERBY, Conch. Icon., XVII, 1870, pl. xxx, fig. 118. * Margaron (Anodonta) rubicunda LEA, Syn., 1870, p. 75. Uruguay River, South America. + GLABARIS ROTUNDUS Spix. * Anodon rotundus SPIx, Test. Fluv. Bras., 1827, p. 28, pl. xx, figs. 2-4. * Anodon rotunda KUSTER, Conch. Cab. Ano., 1853, p. 33, pl. vuit, fig. 1. * Margaron (Anodonta) rotunda LKA, Syn., 1870, p. 81. * Glabaris rotunda VON IHERING, Arch. fiir Nat., 1893, p. 59. *+t Anodonta cailliaudit Lea, Pr. Ac. N. Sei. Phila., IV, 1860, p. 308; * Jl. Ac. N. Sci. Phila., V, 1863, p. 395, pl. xLv, fig. 297; *Obs., X, 1863, p. 31, pl. XLV, fig. 297.— *CLESSIN, Conch. Cab. Ano., 1873, p. 105, pl. xxxtl, figs. 3, 4.—* P&TEL, Conch. Sam., III, 1890, p. 177. * Anodon cailliaudi SOwERBY, Conch. Icon., XVII, 1867, pl. xu, fig. 38. * Margaron (Anodonta) cailliaudit LEA, Syn., 1870, p. 81. Brazil. GLABARIS MEMBRANACEUS Maton. * Mytilus membranaceus MATON, Tr. Linn. Soc. Lond., 1811, p. 329, pl. xxrv, figs. 11, 12. 1Tt is difficult to tell what this is, but I believe it to be some species of Glabaris, from the fact that Maton says that the hinge is edentulous. The figure (11) plainly shows it to be destitute of radial beak sculpture, though the umbo is perfect. The specimens figured are evidently young. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 919 *Margarita (Anodonta) membranacea LEA, Syn., 1836, p.22; 1838, p. 23. *Margaron (Anodonta) membranacea LEA, Syn., 1852, p. 34; 1870, p. 55. * Unio membranaceus HANLEY, Test. Moll., 1842, p. 202.—* H. and A. ADams, Gen. Rec. Moll., II, 1857, p.492.—* PareL, Conch. Sam., III, 1890, p. 159. “Unio subtrapezius Puitiprt, Zeits. fiir Mal., IV, 1847, p.96; *Abbild., III, 1848, p.80, pl. v, fig. 3.—* Kuster, Conch. Cab. Unio, 1862, p. 283, pl. xcv, fig. 4. Rio de la Plata. + GLABARIS IHERINGI Clessin. “Anodonta iheringt CLESSIN, Mal. Bl., V, 1882, p. 191, pl.1v, fig. 5.—*PaTE., Conch. Sam., III, 1890, p. 180.} (Group of Glabaris crispatus.) Shell elliptical obovate, slightly produced at the posterior base, and straight or very feebly incurved in front of it; epidermis fuscous or tawny, cloth-like behind, somewhat rayed by more or less incised lines in front, where it is wrinkled like dried paint, the wrinkles often being looped; nacre lurid, bluish, somewhat iridescent. Animal unknown. +GLABARIS CRISPATUS Bruguiere. * Anodontites crispata BRUGUIERE, JI. de Hist. Nat., I, 1792, p. 131. * Anodonta crispata LAMARCK, An. sans Vert., VI, 1819, p. 86.2—* Lra, Obs., I, 1834, — p. 205.—* HANLeEY, Test. Moll., 1842, p. 217; * Biv. Shells, 1843, p. 217.—* H. and A. ADAMS, Gen. Rec. Moll., I, 1857, p. 503.—* Pare, Conch. Sam., III, 1890, p. 178. *Margarita (Anodonta) crispata Lma, Syn., 1836, p. 48; 1838, p. 29. * Anodon crispata CATLOW and REEVE, Conch. Nom., 1845, p. 66. *Margaron (Anodonta) crispata LEa, Syn., 1852, p. 47; 1870, p. 75. *? Anodonta crispa LAMARCK, Ene Meth., II, 1827, p. 147, pl. com, fig. 3. *t Anodonta puberula GOULD, U. 8. Expl. Ex., XII, 1852, p. 434, figs. 548, 548a, 5485.8 * Anodon reticulatus SOWERBY, Conch. Icon., X VII, 1867, pl. x, fig. 27. *Margaron (Anodonta) reticulata Lea, Syn., 1870, p. 80. * Anodonta reticulata P42 TEL, Conch. Sam., III, 1890, p. 184. Widely distributed in tropical South America. GLABARIS PHILIPPIANUS Simpson.‘ *Anodonta subsinuata PHILIPPI, Mal. Bl., XVI, 1869, p. 41.—* PreirrEer, Nov. Conch., III, 1869, p. 487, pl. cv, figs. 7,8.—* PmTEL, Conch. Sam., III, 1890, p. 185. Ucayali River, Peru. 1 This species combines characters of the Patagonicus and Tenebricosus groups. 2 Lamarck refers to Encyclopaedie Méthodique, pl. Cc111, figs. 3, 3a, 3b. 3 According to Lea’s note in pencil on the margin of this description the species—= crispata. I think he is right. +The name subsinuata, applied to this by Philippi, will have to be placed in the synonymy, as Sowerby used it previously for a Glabaris which he placed in Anodonta, 930 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. + GLABARIS NAPOENSIS Lea. * Anodonta napoensis Lea, Pr. Ac. N. Sci. Phila., XII, 1868, p. 162; *Jl. Ac. N. Sci. Phila., VI, 1868, p.324, pl. Lim, fig. 137; “Obs., XII, 1869, p. 84, pl. L111, fig. 1387.— *CLESSIN, Conch.Cab. Ano., 1873, p. 116, eee figs. 3, 4.—*P@TEL, Conch. Sam., III, 1890, p. 182. * Margaron (Anodonta) napoensis LA, Syn., 1870, p. 80. River Napo, Ecuador. +GLABARIS TORTILIS Lea. * Anodonta tortilis Lea, Tr. Am. Phil. Soc., X,1852, p. 291, pl. xxviny, fig. 54; *Obs., V, 1852, p. 47, pl. xxvul, fig. 54.—*H.and A. ADAms, Gen. Ree. Moll., II, 1857, p. 503.—* CLESSIN, Conch. Cab. Ano., 1875, p. 166, pl. Lv, figs. 7, 8.— *P#TEL, Conch. Sam., III, 1890, p. 185. * Margaron (Anodonta) tortilis LEA, Syn., 1852, p.47; 1870, p. 75. * dnodon tortilis SOWERBY, Conch. Icon., X VII, 1870, pl. xxxvil, fig. 154. Cartagena, Colombia. +GLABARIS LUTEOLUS Lea. * Anodonta luteola La, Pr. Ac. N. Sci. Phila., Il, 1858, p. 118; Jl. Ac. N. Sci. Phila., IV, 1860, p. 267, pl. x11, fig. 147; *Obs., VII, 1860, p. 85, pl. XLII, fig. 147. es CLESSIN, Conch. Cab. Ano., 1874, p. 12 Dp al XXXVUI, figs. 1, 2.—* B. Jel, WriGuHt, Check List, 1888.—* P#TEL, Conch. Sam., ILI, 1890, p. 181. * Margaron (Gneannin) luteola Lua, Syn., 1870, p. 83." * Anodon luteolus SOWERBY, Conch. Icon., XVII, 1870, pl. Xxx111, fig. 132. Isthmus of Darien; Nicaragua: Costa Rica. + GLABARIS SCHOMBURGIANUS Sowerby. * Anodon schomburgianus SOWERBY, Conch. Icon., XVII, 1870, pl. xxxrv, fig. 137. * Anodonta schomburgkiana CLESSIN, Conch.Cab. Ano., 1876, p. 235,pl. LXXvil, fig4. British Guiana. +GLABARIS STREBELII Lea. * Anodonta strebelii LEA, Pr. Ac. N. Sci. Phila., XX, 1868, p. 150; *Jl. Ac. N. Sci. Phila., VII, 1868, p. 322, pl. Lu, fig. 135; *Obs., XII, 1869, p. 82, pl. Lu, fig. 135.—*CLESSIN, Conch. Cab. Ano., 1874, p. 138, pl. xLu, figs. 5, 6.—* B. H. WRIGHT, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 185. * Margaron (Anodonta) strebelti LEA, Syn., 1870, p. 79. Mexico. tGLABARIS CYLINDRACEUS Lea. * Margarita (Anodonta) cylindracea, LEA, Syn., 1836, p. 54; 1838, p. 32. * Anodonta cylindracea Lea, Tr. Am. Phil. Soc., VI, 1838, p. 45, pl. xm, fig. 40; *Obs., II, 1838, p. 45, pl. x1, fig. 40.—* TROSCHEL, Arch. fiir Nat., V, 1839, Pt. 2, p. 238.—* Han ey, Test. Moll., 1842, p. 223; Biv. Shells, 1843, p. 223.— *ConraD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 263.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 503.—* CLEssin, Conch. Cab. Ano., 1874, p. 161, pl. Liu, figs. 5, 6.—* B. H. Wricut, Check List, 1888.—* PasTEL, Conch. Sam., III, 1890, p. 178.—* FiscuER and Crosse, Miss. Sci., Pt. 7, II, 1894, p 528. * Anodon cylindracea CATLOW and REEVE, Conch. Nom., 1845, p. 66.—* SOWERBY, Conch. Icon., XVII, 1869, pl. xxtv, fig. 93 * Margaron (Anodonta) cylindracea LEA, Syn., 1852, p. 51; 1870, p. 82. Medellin River, Mexico. ; 4 No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 921 +GLABARIS PUELCHANUS dOrbigny. * Anodonta puelchana D’ORBIGNY, Guer. Mag., 1835, p. 40; Voy. Am. Mer., 1843, \ p. 620, pl. Lxx1x, figs. 7-9.—* CHENU, Il]. Conch., 1858, pl. III, figs. 7, 7a.— *H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p.503.—* STROBEL, Mal. Argent., 1874.—* CLEssiIn, Conch. Cab. Ano., 1874, p. 130, pl. x11, figs. 5, 6.—* PaTEL, Conch. Sam., III, 1890, p. 183. * Margaron (Anodonta) puelchana LEA, Syn., 1852, p.51; 1870, p. 81. *dnodonta obtusula Hur, Moll. Nouv., III, 1857, p. 87, pl. xv, fig. 3.—*CLEssIN, Conch. Cab. Ano., 1875, p. 214, pl. Lx v1, fig. 2.—*PamTEL,.Conch. Sam., ITI, 1890, p. 182. = Anodon obtusula SOWERBY, Conch. Icon., XVII, 1868, pl. Xx, fig. 81. * Margaron (Anodonta) obtusula La, Syn., 1870, p. 79. * Glabaris obtusula VON IHERING, Arch. fiir Nat., 1895, p. 119. Patagonia, north to the Amazon; west to Bolivia. +GLABARIS LIMNOICUS d’Orbigny. * Anodonta limnoica, D’ORBIGNY, Guer. Mag., 1835, p. 40.—*HANLEY, Test. Moll., 1842, p. 218.—*pD’ORBIGNY, Voy. Am. Mer., 1843, p.619, pl. LXXIX, figs. 1-3.— *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p.502.—*CLEssin, Conch. Cab. Ano., 1874, p. 129, pl. x1, figs. 3, 4.—* PaTEL, Conch. Sam., III, 1890, p. 181. *4Anodon limnoica CATLOW and REEVE,Conch. Nom., 1845, p. 67. * Margarita (Anodonta) limnoica Lx, Syn., 1838, p. 30. * Margaron (Anodonta) limnoica Lea, Syn., 1852, p.50; 1870, p. 79. * Anodonta lymnoica CHENU. Il]. Conch., 1858, pl. 111, figs. 1, la, 10. Argentina. GLABARIS LUCIDUS d’Orbigny. ' * Anodonta lucida D’ORBIGNY, Guer. Mag., 1835, p. 40; ~ Voy. Am. Mer., 1843, p. 620, pl. . LX XIX, fig. 4-6.—* CHENU, II]. Conch., 1858, pl. 111, figs. 6, 6a, 6b.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 503.—* Ciussin, Conch. Cab. Ano, 1875, p. 208, pl. Lx1x, figs. 4, 5.—* Pare, Conch. Sam., IIT, 1890, p. 181. *Margaron (Anodonta) lucida LEa, Syn., 1852, p. 51; 1870, p. 82. Uruguay. GLABARIS INCARUM Philippi. * Anodonta incarum PHILIPPI, Mal. Bl., XVI, 1869, p. 40.—* PFEIFFER, Nov. Conch., III, 1869, p. 488, pl. cv., figs. 9-11.—* P#TEL, Conch. Sam., III, 1890, p. 180.2 Peru. +GLABARIS HOLTONIS Lea. *Anodonta holtonis LEA, Pr. Ac. N. Sci. Phila., I, 1857, p. 85; *J1. Ac. N. Sci. Phila., TM AShSi- Epa! 6.- ply ecxexm hos ol Obs Vil W84ies peo, ply XX, tis. 31.—* CuEssIN, Conch. Cab. Ano., 1874, p. 149, pl. L., figs. 5, 6.—*B. H. WriGut, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1890, p. 180. *Anodon holtonis SOWERBY, Conch. Icon., XVII, 1870, pl. Xx xv1, fig. 147. *Margaron (Anodonta) holtonis La, Syn., 1870, p. 79. Colombia. 1Tt is not unlikely that this and the two preceding species are variations of one thing. 2Probably a form of G. puelchanus d’Orbigny. 9272, . PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXL (Group of Glabaris inequivalvis.) Shell elliptical, moderately solid and inflated, with a low posterior ridge, slightly produced behind near the base and truncated above the posterior slope; beaks full, smooth; ligament imbedded in a sort of groove which extends to the anterior point of the shell; epidermis slightly roughened, often clothlike and showing the rest. periods, having faint radiating lines; nacre bluish, soft, but not brilliant. Animal unknown. t+GLABARIS INA®QUIVALVIS Lea. * Anodonta inequivalvis LA, Pr. Ac. N. Sci. Phila., XII, 1868, p.95; * Jl. Ac. N. Sci. Phila., VI, 1868, p. 292, pl. x11, fig. 108; *Obs., XII, 1869, p. 52, pl. xii, fig. 108.—* CLESSIN, Conch. Cab. Ano., 1874, p. 137, pl. XLIVv, figs. 7,8.—* B. H. WriGut, Check List, 1888. * Margaron (Anodonta) inequivalvis LEA, Syn., 1870, p. 83. *+ Anodonta lenticularis LEA, Pr. Ac. N. Sci. Phila., XII, 1868, p.95; *Jl. Ac. N. Sci. Phila., VI, 1868, p. 290, pl. x11, fig. 102; *Obs., XII, 1869, p. 50, pl. x11, fig. 102.—* CLEssIN, Conch. Cab. Ano., 1874, p. 134, pl. xxi, figs. 5, 6.—*B. H. WRIGHT, Check List, 1888.—* PaTEL, Conch. Sam., III, 1890, p. 181. * Margaron (Anodonta) lenticularis LEA, Syn., 1870, p. 81. * Anodon glabrus SOWERBY, Conch. Icon., XVII, 1870, pl. xxv, fig. 97. * Anodon montezianus SOWERBY, Conch. Icon., XVII, 1870, pl. xxxv1, fig. 145. * Anodonta viridana CLESSIN, Conch. Cab. Ano., 1876, p. 226, pl. Lxxy, fig. 5.— *PmTEL, Conch. Sam., III, 1890, p. 186.—* FIscHER and CROssE, Miss. Sci. Pt. 7, 11, 1894, p. 521. Lake Nicaragua; Mexico. tGLABARIS GRANADENSIS Lea. * Anodonta granadensis Lm, Pr. Ac. N. Sci. Phila., XII, 1868, p. 96; * Ji. Ac. N. Sci. Phila., VI, 1868, p. 288, pl. xxi, fig. 100; *Obs., XII, 1869, p. 48, pl. x11, fig. 100.—* CLEssIN, Conch. Cab. Ano., 1874, p. 134, pl. xxiv, figs. 3, 4.—*B. H. WriGut, Check List, 1888.—* PaTEeL, Conch. Sam., III, 1890, p. 180. *Margaron (Anodonta) granadensis LEA, Syn., 1870, p. 81. Lake Nicaragua, Central America. +GLABARIS TRAUTWINIANUS Lea. * Anodonta trautwiniana Lea, Tr. Am. Phil. Soc., X, 1852, p. 287, pl. xxv1, fig. 48; *Obs., V, 1852, p. 43, pl. xxv1, fig. 48. * Margaron (Anodonta) trautwiniana LEA, Syn., 1870, p. 81. * Anodon trautwinianus SOWERBY, Conch. Icon., X VII, 1870, pl. xxx1tl, fig. 134. * Margaron (Anodonta) troutwiniana LEA, Syn., 1852, p. 51. * Anodonia troutwiniana H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 503.— *CLESSIN, Conch. Cab. Ano., 1874, p. 112, pl. xxxvi, figs. 1, 2.—* Pamrs., Conch. Sam., III, 1890, p. 186. *? Anodon ovatus SWAINSON, Ex. Conch., 1841, pl. xx xvi. ? Anodonta carthagena - , Who? Where? Cartagena, Colombia, NO. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 923 ‘GLABARIS MONTEZUMA Lea.! *Anodonta montezuma LEA, Pr. Am. Phil. Soc., II, 1841, p. 31; *Tr. Am. Phil. Soc., 1842, p. 240, pl. xxi, fig. 55; *Obs., III, 1842, p. 78, pl. xxi, fig. 55.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 504. —* CLEssin, Conch. Cab. Ano., 1876, p. 220, pl. LX Xu, figs. 7, 8.—* B. H. Wrient, Check List, 1888.—* Px Tet, Conch. Sam., III, 1890, p. 182. * Margaron (Anodonta) montezuma LEA, Syn., 1852, p. 51; 1870, p. 82. Central America. (Group of Glabaris trapesialis.) Shell large, inflated, elliptical, narrower in front, with full, rather prominent beaks, a slight wing on the post dorsal part, and sometimes a small one in front of the beaks; epidermis smooth, generally uniform olive green; hinge line straight or slightly sinuous; escutcheon large and conspicuous; nacre bluish silvery, sometimes marked with parallel, wavy, dark lines. Animal with the marsupium filling the inner branchi; gills large, inner the larger; palpi very large, reniform; mantle thin, with a wide, thickened edge; branchial opening small, plicate, but not crenulate or papillose; anal opening large, smooth, separated from the branchial by a strong bridge. 1GLABARIS TRAPESIALIS Lamarck. * Anodonta trapesialis LAMARCK, An. sans. Vert., VI, 1819, p. 87. *Tridina trapesialis DDORBIGNY, Guer. Mag., 1835, p. 432. * Glabaris trapesialis PiusBy, Pr. Ac. N. Sci. Phila., 1896, p. 563. * Anodonta trapezialis BLAINVILLE, Man. de Mal. et Conch., 1825, p. 538, fig. 1.— *DESHAYES, Enc. Meth., II, 1827, p. 147, pl. ccv, fig. 1.—* Wyatt, Man. Conch., 1838, p. 68, pl. x1, fig. 3.—* HANLEY, Test. Moll., 1842, p. 220; * Biv. Shells, 1843, p. 220.—* KustEer, Conch. Cab. Ano., 1853, p. 31, pl. vu, fig. 4.— *H. and A. ApAmMs, Gen. Rec. Moll., II, 1857, p. 504.—* CLessin, Conch Cab. Ano., 1876, p. 235, pl. LXxvui, fig. 5. * Anodon trapezialis CRoucH, Ill. Int. Lam., 1827, p. 16, pl. 1x, fig. 7.—* CaTLow and REEVE, Conch. Nom., 1845, p. 68. * Margarita (Anodonta) trapezialis Lea, Syn., 1836, p.53; 1838, p. 31. * Margaron (Anodonta) trapezialis LEA, Syn., 1852, p.52; 1870, p. 82. * Columba trapezialis PastEL, Conch. Sam., III, 1890, p. 188. * Anodon giganteus SP1x (part), Test. Fluv. Bras., 1827, p. 27, pl. x1x, fig. 2. * Anodon gigantea SOWERBY, Conch. Icon., XVII, 1867, pl. vit, fig. 18. * Anodonta gigantea VON MARTENS, Mal. B1., XV, 1868, p. 196. * Columba gigantea Pa TEL, Conch. Sam., IIT, 1890, p. 188. *? Anodon penicillatus GRray,® Pr. Zool. Soc. Lond., 1834, p.57.—* MOLLER, Syn. Noy. Gen., 1836, p. 195. 1T have never seen this shell, and can not be positive from the figure and descrip- tion whether it is a Glabaris or an Anodonta. I incline to think it the former, and that it belongs in this group. 2—= Anodontites trapesialis Lamarck according to d’Orbigny in above, but in Voy. Am. Mer. he says it is not that. 3T have never seen this shell. Dr. Lea believes it to = trapesialis Lamarck. 924 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. *Anodonta penicillata H. and A. ADAMS, Gram, Rec. Moll., Tl, 1857, p. 503.— *PMHTEL, Conch. Sam., III, 1890, p. 183. * Anodon susanne GRAY in Griffith, Cuyv., XII, 1834, pl. xxrv, fig. 1.'\—* SowERBY, Conch. Icon., XVII, 1867, pl. 1x, fig. 21. * Anodonta susannew Pa TEL, Conch. Sam., III, 1890, p. 185. *t Anodon ciconia GOULD, Pr. Bost. Soc. Nat. Hist., IV, 1851, p. 92.2—*?GouLp and CARPENTER, Pr. Zool. Soc. Lond., 1856, p. 202.—* Orta, Conch., 1862, ). 213.—* PH@TEL, Conch. Sam., III, 1890, p. 177.—*? FiscuER and CRossE, Miss. Sci., Pt. 7, II, 1894, p. 534, pl. Lx vin, figs. 2, 2a. *Anodon blainvilleana SOWERBY, Conch. Icon., XVII, 1867, pl. v1, fig. 2 +GLABARIS TRAPESIALIS var. ANSERINUS Spix.3 * Anodon anserinus SPIX, Test.F luv. Bras., 1827, p.29, pl. x vu, figs.1,2.—*SOWERBY, Conch. Icon., XVII, 1870, pl. xx x1, fig. 125. * Anodon anserinad CATLOW and REEVE, Conch. Nom., 1845, p. 66. * Margarita (Anodonta) anserina LEA, Syn., 1838, p. 31. * Anodonta anserina HANLEY, Test. Moll., 1842, p. 222; * Biv. Shells, 1843, p. 222.— *H.and A. Apams, Gen. Rec. Moll., II, 1857, p. 504.—*CHENU, Man., 1859, II, p. 146.—* CLEssin, Conch. Cab. Ano., 1873, p. 80, pl. xx, fig. 1.—* Pa Txt, Conch. Sam., III, 1890, p. 176. *Margaron (Anodonta) anserina Lia, Syn., 1852, p.52; 1870, p. 83. +GLABARIS TRAPESIALIS var. EXOTICUS Lamarck. * Anodonta exoticus LAMARCK, An. sans Vert., VI, 1819,p. 87.—* Srark, Nat. Hist., II, 1828, p. 89.—* DELESSERT, Rec. Coq. Lam.,1841, pl. x111, fig. 1.—*HANLEY, Test. Moll., 1842, p. 217; *Biv. Shells, 1843, p. 217.—*p’ORBIGNy, Voy, Am. Mer., 1843, p. 621.—*CHENU, II]. Conch., 1858, pl. m1, fig. 2.—* von MARTENS, Mal. Bl., XV, 1868, p. 197.—*STROBEL, Mat. Mal., Pt. 1, 1874, p. 66.—*CLESSIN, Conch. Cab. Ano., 1875, p. 178, pl. Lvmm, figs. 1, 2. *Anadon exotica CATLOW and REEVE, Conch. Nom., 1845, p. 66._ *Columba exotica P#TEL, Conch. Sam., III, 1890, p. 188. t GLABARIS TRAPESIALIS var. SCRIPTUS Sowerby. *Anodon scriptus SOWERBY, Conch. Icon., XVII, 1867, pl. Iv, fig. 9.+ * Anodon subsinuatus SOWERBY, Conch. Icon., X VII, 1867, pl. vu, fig. 14. 1 This is briefly described in the index, p. 595, as Anodon susanne. In the text the genus is called Anodontites. 2Two specimens of this, a large and a smaller one, are in the Gould collection. Lea places the species in the synonymy of G. trapesialis Lamarck., to which Lewis objects in a note on the back of Gould’s label on account of its locality—Mexico. After carefully comparing these shells with all our trapesialis in the Museum col- lections I am unable to separate the two. Carpenter states (Mazatlan Shells, p. 117) that it is found rather plentifully at Mazatlan. I do not believe that the locality given for Gould’s shells is correct (it is referred to Mexico with doubt by its author), and have no doubt that they are from South America. The species alluded to by Carpenter is probably G. glauca Valenciennes, which is closely related to G. trapesialis. 3 Glabaris trapesialis is a very abundant, widely distributed species, and shows a great number of variations. Some of these are probably worthy of varietal names, others seem to be so mixed with various forms that they are scarcely worthy of any designation. ‘A brownish, somewhat elongated form, much narrowed in front, receiving its name from having dark purplish letter-like marks on the nacre. There is every pos- sible development of this character from shells in which it is a marked feature to those without it at all. 4 : No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 925 * Anodon subsinuatus SOWERBY, Conch. Icon., X VII, 1867, pl. v1, fig. 15. * Anodon areolatus SOWERBY, Conch. Icon., X VII, 1867, pl. x, fig. 28. * Anodonta bahiensis KUSTER, Conch. Cab. Ano., 1873, p. 94, pl. Xx, fig. 2.—*P TEL, Conch. Sam., III, 1890, p. 176. *Glabaris bahiensis VON IHERING, Arch. fiir Naturg., 1895, p. 115. GLABARIS TRAPESIALIS var. MORETONIANUS Sowerby. * Anodon moretonianus SOWERBY, Conch. Icon., X VII, 1867, pl. 1x, fig. 20. tGLABARIS TRAPESIALIS var. RIOPLATENSIS Sowerby. * Anodon rioplatensis SOWERBY, Conch. Icon., X VII, 1870, pl. xxVv1, fig. 101. * Anodonta rioplatensis CLESSIN, Conch. Cab. Ano., 1875, p. 217, pl. Lxiv, fig. 3.— *PaTEL, Conch. Sam., III, 1890, p. 184. *? Anodon ciconia SOWERBY, Conch. Icon., X VII, 1870, pl. X XIX, fig. 115 a. +GLABARIS TRAPESIALIS var. CYGNAEFORMIS Pilsbry. *Glabaris trapesialis var. cygneformis PILSBRY, Pr.Ac. N. Sei. Phila., 1896, p. 563, pl. xxv1, fig. 4, 5. Tropical South America from Brazil and Peru southward. t GLABARIS RADIATUS Spix.! * Anodon radiatus SP1x, Test. Fluv. Bras., 1827, p. 31, pl. xx111, fig. 1. * Margaron (Anodonta) radiatus LEA, Syn., 1870, p. 83. * Margarita (Anodonta) radiata LEA, Syn., 1836, p. 51. * Anodon radiata CATLOW and REEVE, Conch. Nom., 1845, p. 67. * Glabaris radiata VON IHERING, Arch. fiir Nat., 1893, p. 115. Brazil. tGLABARIS SIMPSONIANUS Pilsbry. * Glabaris simpsonianus PiLsBRy, Pr. Ac. N. Sci. Phila., 1896, p. 564, pl. xxvil, fig. 13. Rio de la Plata. GLABARIS HERTWIGII von Ihering. * Anodonta hertwigit VON IHERING, Arch. fiir Nat., 1890, p. 150, pl. rx, fig. 7. +GLABARIS SINUOSUS Lamarck. * Anodonta sinuosa LAMARCK, An. sans Vert., VI, 1819, p. 87.—* DESHAYEsS, Enc. Meth., II, 1827, p. 147, pl. ccim, fig. 2.—* HanLEy, Test. Moll., 1842, p. 224; * Biv. Shells, 1843, p. 224, Pt. 24, fig. 16.—*H. and A. ADAMs, Gen. Rec. Moll., II, 1857, p. 503.—* PasTEL, Conch. Sam., III, 1890, p. 184. * Margarita (Anodonta) sinuosa Lea, Syn., 1836, p.54; 1838, p. 32. * Anodon sinuosa CATLOW and REEVE, Conch. Nom., 1845, p. 68. * Margaron (Anodonta) sinuosa LEA, Syn., 1852, p.53; 1870, p. 83. * Anodon sinuosus SWAINSON, Ex. Conch., 2d ed., 1841, p. 29, pl. Xv1. Brazil. 1The specimen figured is a young shell, somewhat narrowed at the posterior end, and quite full at the central base, with broad, faint rays. It may be only a variety of trapesialis. 926 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. — GLABARIS GRIJALVZ Morelet. * Anodonta grijalve MORELET, Jl. de Conch., XXXT, 1884, p.12.—* P&TEL,Conch. Sam., III, 1890, p. 180.—* FiscuEr and Crosse, Miss. Sei., Pt. 7, II, 1894, p. 532, pl. LxIx, figs. 1, la. ‘i * Anodonta grijoloe PmTEL, Conch. Sam., ITI, 1890, p. 180.! Tabasco, Mexico. +GLABARIS GLAUCUS Valenciennes. * 4{nodonta glauca VALENCIENNES, Rec. Obs. Zool., II, 1833, p. 236, pl. 1, fig. 2.— *Fprussac, Guer. Mag., 1835, p. 25.—* DrsHAyEs, An. sans Vert., 2d ed., VI, 1835, p. 569; 3d ed., II, 1839, p. 679.—* DELESSERT, Rec. Coq. Lam., 1841, pl. xu, fig. 3.—* HanLey, Test. Moll., 1842, p. 221; * Biv. Shells, 1843, p. 221.— * ConraD, Pr. Ac. N. Sci. Phiia., VI, 1853, p. 264.—* H. and A. ADams, Gen. Rec. Moll., II, 1857, p. 502.—* CLessin, Conch. Cab. Ano., 1876, p. 222, pl. LXXMI fig. 1.—* B. H. WRIGHT, Check List, 1888.—* Pa TEL, Conch. Sam., III, 1590, p- 180.—* FiscuEer and Crossp, Miss. Sci., Pt. 7, If, 1894, p. 533, pl. LXIXx, figs. 1,la. * Margarita (Anodonta) glauca LEA, Syn., 1836, p. 51; 1858, p. 30. * Anodon glauca CATLOW and REEVE, Conch. Nom., 1845, p. 67.—* GOULD, Pr. Bost. Soc. N. Hist., III, 1850, p. 293. * Margaron (Anodonta) glauca Lra, Syn., 1852, p.50; 1870, p. 80. *Monocondylwa glauca H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 501.— *P ere, Conch. Sam., ITI, 1890, p. 174. * Anodon glaucus SOWERBY, Conch. Icon., XVII, 1870, pl. xxvit, fig. 105. *% Anodonta ciconia GOULD, Pr. Bost. Soc. N. Hist. 1V, 1851, p. 92.—CARPENTER, Maz. Shells, 1857, p. 117.—*? FiscHER and Crosss, Miss. Sci., Pt. 7, II, 1894, p. 534, pl. Lx vu, figs. 2, 2a. * Anodonta burroughiana CHENU (part), Ill. Conch., 1858, pl. ur. GLABARIS GLAUCUS var. SINALOENSIS Crosse and Fischer. * Anodonta glauca VALENCIENNES, var. sinaloenses CROSSE and FISCHER, JI. de Conch., XXXI, 1883, p. 219. Mexico, south to Peru and Brazil. GLABARIS UMBONATUS Simpson. Anodon ciconia SOwWERBY (part), Conch. Icon., XVII, 1870, pl. xxx, fig. 115b.? Locality unknown. +GLABARIS BRIDGESII Lea. * Anodonta bridgesii Lea, Pr. Ac. N. Sci. Phila., XII, 1868, p. 95; *J1. Ac. N. Sei. Phila., VI, 1868, p. 291, pl. xuu, fig. 104; *Obs., XII, 1869, p. 51, pl. XL, \'The above atrocity, which is a sample of many names in Petel, is no doubt intended for G. grijalva. 2 Sowerby gives two figures of what he calls ciconia, 115a being most likely a young shell of some form of trapesialis, the other a totally different form, apparently a new species of Glabaris of the trapesialis group. As far as the figure shows it may be described as follows: Shell subquadrate with nearly straight dorsal and basal lines, biangulate behind, greatly inflated, with very full, high beaks which rise far above the dorsal line, winged and angulated at the front and hinder dorsal line; color olive-green. Length, 147mm.; height, 92 mm.; elevation of beaks above dorsal line, 10 mm. No. 1205. SYNOPSIS OF THE NATADES—SIMPSON. 927 ‘fig. 104.—* CLEssIn, Conch. Cab. Ano., 1874, p. 136, pl. XLv, figs. 1, 2.—* B. H. WriGuHt, Check List, 1888.—* Pmrrn, Conch. Sam., IIT, 1890, p. 177. * Margaron (Anodonta) bridgesii Lea, Syn., 1870, p. 81. Nicaragua; Honduras. +GLABARIS JEWITTIANUS Lea. * Anodonta jewittiana LEa, Pr. Ac. N. Sci. Phila., XII, 1868, p. 95. *Anodonta jewittii Lka, JI. Ac. N. Sci. Phila., VI, 1869, p. 289, pl. xut, fig. 101; *Obs., XII, 1869, p. 49, pl. x11, fig. 101.—* CLEssIn, Conch. Cab. Ano., 1874, p. 135, pl. xxtv, figs. 1,2.—*B. H. Wrient, Check List, 1888.—* Pret, Conch. Sam., III, 1890, p. 180. ~ Margaron (Anodonta) jewittii LEA, Syn., 1870, p. 81. Lake Nicaragua. +GLABARIS FORBESIANUS Lea. * Anodonta forbesiana Lna, Pr. Ac. N. Sci. Phila., IV, 1860, p.92; *Jl. Ac. N. Sci. Phila., V, 1863, p. 393, pl. xLvu, fig. 301; *Obs., X, 1863, p. 29, pl. XLVQ, fig. 301.—* CLessin, Conch. Cab. Ano., 1873, p. 115, pl. xxxTv, figs. 1, 2.—* PATEL, Conch. Sam., III, 1890, p. 179. * Anodon forbesianus SOWERBY, Conch. Icon., X VII, 1870, pl. xxx, fig. 119. * Margaron (Anodon‘a) forbesiana LEA, Syn., 1870, p. 81. Uruguay; Peru. +GLABARIS MORICANDII Lea. * Anodonta moricandii LEA, Pr. Ac. N. Sci. Phila., IV, 1860, p.90; *Jl. Ac. N. Sci. Phila., V, 1863, p. 396, pl. xurx, fig. 303; Obs., X, 1863, p. 32, pl. x1LIx, fig. 303.—* CLESsIN, Conch. Cab. Ano., 1874, p. 114, pl: xxxvii, figs. 3, 4.— *PmTEL, Conch. Sam., III, 1890, p. 182. * Anodon moricandii SOWERBY, Conch. Icon., XVII, 1870, pl. Xxx, fig. 126. * Margaron (Anodonta) moricandii LEA, Syn., 1870, p. 81. * Glabaris moricandii VON IHERING, Arch. fiir Nat., 1893, p. 115. *? Anodonta exotica SOWERBY, Conch. Icon., XVII, 1867, pl. xv1, fig. 57. * Anodonta angustata CLESSIN,! Conch. Cab. Ano., 1876, p. 226, pl. LXXxIv, figs. 6, 7.— *P#TEL, Conch. Sam., ITI, 1890, p. 176. Brazil. (Group of Glabaris georgine.) Shell subsolid, obovate, with a decided, curved posterior ridge, and a smaller one above it, the space between the ridges a shallow groove. GLABARIS GEORGIN Griffith. * Anodonta georgine GRIFFITH, Griff. Cuvier, XII, 1834, pl. x1x. Brief description in index. Rivers of Paraguay. (Group of Glabaris trigonus.) Shell long, elliptical, solid, inflated, produced at posterior base with smooth, shining epidermis; nacre very bright. 1 Appears to be a very young G. moricandii. 928 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. +GLABARIS TRIGONUS Spix. * Anodon trigonus SPIx, Test. Fluv. Bras., 1827, p. 29, pl. x x11, fig. 2. * Margarita (Anodonta) trigona Lma, Syn., 1836, p. 51; 1838, p. 30. * Anodon trigona CaTLOW and REEVE, Conch. Nom., 1845, p. 68. * Anodonta trigona HANLEY, Test. Moll., 1842, p. 218.—*pD’ORBIGNY, Voy. Am. Mer., 1843, p. 618.—* KusTER, Conch. Cab. Ano., 1853, p. 9, pl. 1, fig. 5.—*H. . and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 503.—* PareEL, Conch. Sam., III, 1890, p. 186. * Margaron (Anodonta) trigona LEA, Syn., 1852, p. 50; 1870, p. 75. * dnodon chiquetana D’ORBIGNY, Guer. Mag., 1835, p. 41. * Anodonta chiquetana PEHTEL, Conch. Sam., ITI, 1890, p. 177. * 4nodonta castelnandi Hurk, Moll. Nouv., III, 1857, p. 88, pl. xv1tt, fig.4.—* PATEL, — Conch. Sam., III, 1890, p. 177. * dnodonta subrostrata PHitteri, Mal. Bl., XVI, 1869, p. 39.—* PFEIFFER. Nov. Conch., III, 1869, p. 486, pl. cv, figs. 1-3.—* P&TEL, Conch. Sam., ITI, 1890, p. 185. *4Anodonta ucayalensis Puitiepi, Mal. Bl., XVI, 1869, p. 40.--* PFEIFFER, Novy. Conch., III, 1869, p. 486, pl. cv, figs. 4-6.—-* Pa@TEL, Conch. Sam., III, 1890, p. 186. Brazil; Ecuador; Peru; Bolivia. +GLABARIS AMAZONENSIS Lea. * Anodonta amazonensis LEA, Pr. Ac. N. Sci. Phila., IV, 1860, p.89; *Jl. Ac. N. Sci. Phila., V, 1863, p. 395, pl. xLv1, fig. 300; *Obs., X, 1863, p. 31, pl. XLVI, fig. 300.—* CLESSIN, Conch. Cab. Ano., 1874, p. 119, pl. xxxvil, fig. 7.—* P&TEL, Conch. Sam., III, 1890, p. 176. * Anodon amazonensis SOwERBY, Conch. Icon., X VII, 1870, pl. xxx, fig. 120. *Margaron (Anodonta) amazonensis LEA, Syn., 1870, p. 82. Amazon. GLABARIS WEDDELLII Hupe. * Anodonta weddelliti Hupe, Moll. Nouy., III, 1857, p.87, pl. xvii, fig. 5.—*CLESSIN, Conch. Cab. Ano., 1876, p. 214, pl. Lxvi, fig. 1.—* Pa TEL, Conch. Sam., III, 1890, p. 186. * Anodon weddellii SowERBY, Conch. Icon., XVII, 1868, pl. xx, fig. 80. *Margaron (Anodonta) weddellit LEA, Syn., 1870, p. 79. Brazil. +GLABARIS ELONGATUS Swainson. *Anodon elongatus SWAINSON, Zool. l11., Ist Ser., II, pl. chxxvi, 1823. * Margarita (Anodonta) elongata LEA, Syn., 1836, p. 53; 1858, p. 32. * Anodonta elongata HANLEY, Test. Moll., 1842, p. 223; *Biv. Shells, 1843, p. 223.—*H. and A. ApAms, Gen. Rec. Moll., II, 1857, p. 503. * Anodon elongata CATLOW and REEVE, Conch. Nom., 1845, p. 66. * Anodonta solidula DEVILLE and Hupr, Rev. et Mag. Zool., 1850, p. 644, pl. XVI, fig. 2.—*Hupr, Moll. Nouvy., III, 1857, p. 88, pl. xvii, fig. 2.—*H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 503.—CLrssi1n, Conch. Cab. Ano., 1876, p. 291, pl. LXxuI, fig. 2.—* Pa: TEL, Conch. Sam., III, 1890, p. 185. * Margaron (Anodonta) solidula LEA, Syn., 1852, p.53; 1870, p. 88. * Anodon solidula SOwERBY, Conch. Icon., X VII, 1869, pl. x x11, fig. 91. t* Anodonta wheatleyi Lea, Tr. Am. Phil. Soc., X, 1852, p. 287, pl. xxvi, fig. 49; *Obs., V, 1852, p. 48, pl. xx v1, fig. 49.—* H. and A. Apams, Gen. Rec. Moll., II, 1857, p.503.—* CLEssSIN, Conch. Cab. Ano., 1874, p. 113, pl. XxxvVI, figs. 3, 4.— *PaTEL, Conch. Sam., III, 1890, p. 186. * Margaron (Anodonta) wheatleyi LEA, Syn., 1852, p.51; 1870, p. 82. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 929 * Anodon amethystus SOWERBY, Conch. Icon., XVII, 1869, pl. xxrv, figs. 95, 95a, 95b.! * Anodonta amethysta CLESSIN, Conch. Cab. Ano., 1875, p. 180, pl. Lx, fig. 3. * Anodon dactylus SOwERBY, Conch. Icon., XVII, 1867, pl. x1x, fig. 75. ’ * Anodonta dactylus CLESSIN, Conch. Cab., 1875, p. 175, pl. Lvu, fig. 3.—P TEL, Conch. Sam., ITI, 1890, p. 178. Margaron (Anodonta) dactylus Lea, Syn., 1870, p. 80. GLABARIS LINGULATUS Hupe. * Anodonta lingulata Hupn, Moll. Nouv., III, 1857, p. 89.—* CLessin, Conch. Cab. Ano., 1875, p. 215, pl. Lx v1, ig. 3.—* P&TEL, Conch. Sam., III, 1890, p. 181. * Anodon lingulata SOwERBY, Conch. Icon., XVII, 1869, pl. x x11, fig. 90. * Margaron (Anodonta) lingulata Lra, Syn., 1870, p. 79. * Glabaris lingulata VON IHERING, Arch. fiir Nat.,1893, p. 119. Paraguay. t{GLABARIS MORTONIANUS Lea. * Anodonta mortoniana LEA,Tr. Am. Phil. Soc., V,1834, p. 80,pl. x11, fig. 37; *Obs., I, 1834, p. 192, pl. x1, fig. 37.—* HANLEY, Test. Moll., 1842, p.219.—*H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 502.—* CLessin, Conch. Cab. Ano., 1874, p. 151, pl. xiv, figs. 5, 6.—* Pa Tex, Conch. Sam., III, 1890, p. 182. * Margarita (Anodonta) mortoniana LEA, Syn., 1838, p. 30. = Anodon mortoniana CATLOW and REEVE, Conch. Nom., 1845, p. 67. * Margaron (Anodonta) mortoniana LEA, Syn., 1852, p. 150; 1800, p. 80. Parana River, South America. GLABARIS LONGINUS Spix. * Anodon longinus SPix, Test. Fluy. Bras, 1827, p. 29, pl. xx, fig 1. * Mycetopus longinus CLESSIN, Conch. Cab. Ano., 1875, p. 202.—* FiscHmER, J]. de Conch., XXX VIII, 1890, p. 8. * Tridina longina LEA, Syn., 1836, p. 57. * Anodonta longina KusTER, Conch. Cab. Ano., 1853, p. 7, pl. 1, fig. 1.—* Parr, Conch. Sam., III, 1890, p. 181. Brazil; Amazon. GLABARIS LEOTANDI Guppy.’ * Anodonta leotandi Guppy, Ann. and Mag., XIV, 1864, p. 243;* XVII, 1866, p.54; Pr. Sci. Assn. Trinidad, 1872, p. —; “Jl. Conch., VII, 1894, p. 229. «Anodonta leotandi B. H. Wricut, Check List, 1888. * Margaron (Anodonta) leotandi La, Syn., 1870, p. 83. Trinidad Island, West Indies. Section STYGANODON von Martens, 1900, (Type, Anodonta tenebricosa Lea. ) Shell subrhomboid, with a thick, dark, rather rough, sombre-colored epidermis, which is sometimes faintly rayed, nacre lurid, shaded green; animal unknown. (Group of Glabaris tenebricosus.) Shell elongate, slightly inflated; base incurved. 1 Changed to wheatleyi Lea, by Sowerby in index. 21 am not certain where this groups, as I have never seen the sheil, and it has not been figured. Proc. N. M. vol. xxii o9 930 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. +GLABARIS TENEBRICOSUS Lea. * Anodonta tenebricosa Lea, Tr. Am. Phil. Soc., V, 1834, p. 78, pl. xu, fig. 36; “Obs., I, 1834, p. 190, pl. x11, fig. 36.—* D’ORBIGNY, Guer. Mag., 1835, p. 39.— * HANLEY, Test. Moll., 1842, p. 224.—* p’ORBIGNY, Voy. Am. Mer., 1843, p.616.— “Hanley, Biv. Shells, 1856, p. 224.—* H. and A. Apams, Gen. Ree. Moll., II, 1857, p.503.—* CHENU, Man., 1859, p. 146, fig. 720.—* vON MARTENS, Mal. BL., XV, 1868, p. 200.—* Pa TeL, Conch. Sam., III, 1890, p. 185. * Margarita (Anodonta) tenebricosa LEA, Syn., 1836, p. 54; 1838, p. 32. = Anodon tenebricosa CATLOW and REEVE, Conch. Nom., 1845, p. 68.—* SowERBY, Conch. Icon., XVII, 1867, pl. x11, fig. 43. * Margaron (Anodonta) tenebricosa LEA, Syn., 1852, p. 53; 1870, p. 83. * Glabaris tenebricosa VON JHERING, Arch. fiir Nat., 1893, p. 61. * Anodon tenebricosus SOWERBY, Conch. Icon., XVII, 1870, pl. Xxx1, fig. 123. Brazil, Ecuador, Peru; south to Argentina. GLABARIS PASTASANUS Clessin. * Anodonta pastasana CLESSIN, Mal. BI. (2), I, 1879, p. 173, pl. x1, fig. 1. Rio Pastasa, Ecuador.' +GLABARIS SOLENIFORMIS d’Orbigny. * Anodonta soleniformis D’ORBIGNY, Guer. Mag., 1835, p.41; * Voy. Am. Mer., 1843, p. 617, pl. Lxxiv, figs. 1,3.—* H. and A. ApAms, Gen. Rec. Moll., II, 1857, p. 503.—* CLEssIN, Conch. Cab. Ano., 1873, p. 111, pl. xxvu, fig. 1.—* PHTEL, Conch. Sam., III, 1890, p. 185. *Margarita (Anodonta) soleniformis LEA, Syn., 1838, p. 32. *Margaron (Anodonta) soleniformis LEA, Syn., 1852, p.53; 1870, p. 83. *Glabaris soleniformis VON IHERING, Arch. fiir. Nat., 1893, p. 59. * Anodon solenidea SOWERBY, Conch. Icon., X VII, 1867, pl. x vu, fig. 65. *Margaron (Anodonta) solenidea LEA, Syn., 1870, p. 83. Brazil, south into Argentina. + GLABARIS CLESSINI Fischer. * Mycetopus plicatus CLESSIN, Mal. Bl., V, 1882, p. 190, pl. 1v, fig. 7. * P#TeL, Conch. Sam., III, 1890, p. 187. * Mycetopus clessini, FISCHER,? Jl. de Conch., XXXVIII, 1890, p. 8, foutuote. * Glabaris nehringi VON IHERING, Arch. fiir Nat., 1893, p. 60. Southern Brazil; southward into Argentina. GLABARIS BAMBOUSEARUM Morelet. * Anodon bambousearum MORELEY, Test. Nov., II, 1851, p. 24.—* FiscHER and CROSSE, Miss. Sci., Pt. 7, II, 1894, p. 527, pl. LXI11, figs. 6, 6a. - Palenque in Chiapas, Mexico. ! Probably only a variety of tenebricosus. 2 Fischer changed the name plicatus to clessini because the former name had been used by Sowerby for a species which he (Sowerby) placed in Mycetopus. Sowerby’s shell is a Mutela, and that of Clessin a Glabaris of the Tenebricosus group. Von Ihering applied the name nehringi to the above after Fischer had changed it, and was evidently not aware that the French savant had given it a new name. No. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 931 +GLABARIS SCHROTERIANUS Lea. * Anodonta schréteriana LEA, Tr. Am. Phil. Soc., XI, 1852, p. 292, pl. xxix, fig. 553 *Obs., V, 1852, p. 48, pl. XXxIX, fig.55.—* HuPk, Moll. Nouv., III, 1857, p. 89, pl. XV, fig. 3.—* H.and A. Apams, Gen. Ree. Moll, II, 1857, p.503.—* CLEssin, Conch. Cab. Ano., 1874, p. 151, pl. XLVU, figs. 5, 6.—* Pa TEL, Conch. Sam., ITI, 1890, p. 184. * Margaron (Anodonta) schréteriana LEA, Syn., 1852, p.51; 1870, p. 82. * Anodon schriteriana SOWERBY, Conch. Icon., X VII, 1868, pl. xx, fig. 74. * Margaritana schréteriana P&TEL, Conch. Sam., III, 1890, p. 173. Amazon drainage. (Group of Glabaris obtusus.) Shell short, inflated, thin, feebly rayed, rays often broken; base rather full. +GLABARIS OBTUSUS Spix. * Anodon obtusus Sprx, Test. Fluv. Bras., 1827, p. 30, pl. xx, fig. 3. * Margarita (Anodonta) obtusa LEA, Syn., 1836, p. 52; 1838, p. 31. * Anodonta obtusa HANLEY, Test. Moll., 1842, p. 221; Biv. Shells, 1843, p. 221.— *PoTirzZ and MICHAUD, Gall. Moll., 1844, p. 144, pl. Lv, fig. 3.—* KustrEr, Conch. Cab. Ano., 1853, p. 8, pl. 1, figs. 3, 4.—*H.and A. ApAMs, Gen. Rec. Moll., II, 1857, p. 504.—* MusGrave, Phot. Conch., 1863, pl. 1, fig. 7.—* CLEs- stn, Conch. Cab. Ano., 1875, p. 170, pl. Lv1, figs. 1, 2.—* P#TEL, Conch. Sam., ILI, 1890, p. 182. * Margaron (Anodonta) obtusa LEA, Syn., 1852, p.51; 1870, p. 82. * Anodon obtusa CATLOW and REEVE, Conch. Nom., 1845, p. 67.—* SOWERBY, Conch. Icon., XVII, 1867, pl. x11, fig. 39. * Anodonta VALENCIENNES, Coq. Mar. Biv., 18272, pl. xLv1i1, figs. 3a, 30.! Brazil; Paraguay. +GLABARIS LITURATUS Spix. * Anodon obtusus vat. b. lituratum Spix, Test. Fluv. Bras., 1827, p. 30, pl. XXII, fig. 4. * Anodonta litturata Hur®, Moll. Nouv., 1857, p. 87, pl. xvu, fig. 4.° * Anodon liturata SOWERBY, Conch. Icon., XVII, 1868, pl. Xx, fig. 78. Brazil. Section VIRGULA Simpson, 1900. (Type, Glabaris ensiformis Spix.) Shell subsolid to solid, moderately inflated, greatly elongated, straight or faleate, rounded in front, sharply pointed at the posterior base, where the high, sharply defined posterior ridge ends and above which it is somewhat obliquely truncated; beaks not high; epidermis green to olive; nacre brilliant, bluish or purplish, iridescent, rayed with very fine, indistinct ridges; posterior end with a slight sinus. Animal unknown. ‘Valenciennes gives no name or description with the above, but the figure is, no doubt, G. obtusa. 2Hupe is certain that this is different from obtusus, and says that the small angular marks on its surface are very distinct; that it is thinner and less inflated. I doubt whether it is more than a variety of obtusus. 932 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. +t GLABARIS ENSIFORMIS Spix. * Anodon ensiformis Spix, Test. Fluv. Bras., 1827, p. 31, pl. xx1v, figs. 1, 2.— *CaTLOW and REEVE, Conch. Nom., 1845, p. 66.—* SOWERBY, Conch. Icon., XVII, 1867, pl. x1, fig. 31. * Tridina ensiformis LEA, Syn., 1836, p. 57. * Anodonta ensiformis HANLEY, Test. Moll., 1842, p. 223; * Biv. Shells, 1843, p. 223.—* D’ORBIGNY, Voy. Am. Mer., 1843, p. 618, pl. LX xx, fig. 10.—* Kus- TER, Conch. Cab. Ano., 1853, p. 8, pl. 1, fig. 12.—* H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 503.—*? CHENU, Man., 1859, II, p. 146, fig. 721.—* PaTEL, Conch. Sam., Lil, 1890, p. 179. * Margarita (Anodonta) ensiformis LHA, Syn., 1838, p. 32. * Margaron (Anodonta) ensiformis LEA, Syn., 1852, p. 51; 1870, p. 82. Tropical South America.! +t GLABARIS FALSUS Simpson.? Yuruari River, a branch of the Orinoco. +GLABARIS LEGUMEN von Martens. * Anodonta legumen VON MARTENS, S. B, Nat. Fr., 1888, p. 65. ’ Southern Brazil. The following are unfigured or indeterminate species of Glabaris. *Anodon brevis SOWERBY, Conch. Icon., XVII, 1870, pl. Xxx1, fig. 124. La Plata, South America.’ * Anodon porcifer GRAY, Pr. Zool. Soc. Lond., 1834, p. 58. Paraguay. *Unio (Anodontes) spixii D’ORBIGNY, Guer. Mag., 1835, p. 39.4 Brazil. * Anodon cheeziana SOWERBY, Conch. Icon., X VII, 1867, pl. xv, fig. 52. Probably a Glabaris. * Anodonta nicaragua PuiLirPl, Zeits. fiir Mal., V, 1848, p. 130. Nicaragua. ‘The three very peculiar species of this section seem to show relationship with G. wheatleyt and G. clessini. 2 Shell elongated, rather thin, subrhomboid and pointed at the posterior base, slightly rayed on the low, rounded posterior ridge; beaks low; epidermis olive green, somewhat cloth-like; hinge line nearly straight; anterior scars deep; escutcheon small, dark; nacre shaded bluish and greenish, lurid purplish in the center, iridescent behind. Length, 76 mm.; height, 21 mm.; diameter, 11 mm. This was supposed by Dr. Lea to be ensiformis and I thought it was that until a more careful examination convinced me of its distinctness. It is a smaller, thinner, more rhomboid sheil, and has a somewhat cloth-like epidermis, while that of ensi- formis is smooth. I regret that I can not figure this species, and that I must describe it in a footnote, but I only discovered that it was a distinct species as the Synopsis. was about ready for the press. 3T can not tell what thisis. If itis a true Glabaris, it would be the type of a group perhaps near G. tenebricosus. +D’Orbigny refexs to figures in Spix, but his references are badly mixed up. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 933 * Anodonta aperta RAFINESQUE, Ati. J1., No. 4, 1852, p. 154, Parana River, South America. * Anodonta atrovireus PHILIPPI, Zeits. fiir Mal., V, 1848, p. 130. * Anodonta carinata DUNKER, Mal. Bl.. V, 1858, p. 225. Colombia. * Anodonta cornea PHILIPPI, Zeits. fiir Mal., V, 1848, p. 180. Nicaragua. * Anodonta giullaint H. and A. ADAMS, Gen. Rec. Moll., I, 1857, p.502. Credited to Recluz. * Anodonta paphos RAFINESQUE, Ati. Jl. and Friend., 1832, p. 134. Parana River. * Anodon pictus SWAINSON, Ex. Conch., 2d ed., 1841, p. 39. * Anodonta wallisi Mousson, Mal. BI., XVI, 1869, p. 188. * Anodonta tehuantepecensis FISCHER and CROSSE, Miss. Sci., 1894, p. 526. Tehuantepec. Not yet figured. * Anodonta hertwigi VON IHERING. Where? * Anodonta bergi VON IHERING. Where? Genus MYCETOPODA dQ Orbigny, 18385.! (Type, Mycetopoda soleniformis VOrbigny. ) Mycetopoda D’ORBIGNY, Guer. Mag., No. 62, 1835, p. 41. Mycetopus D’ORBIGNY, Voy. Am. Mer., 1847, p. 600. Shell thin, elongated, truncate above behind, with a low, posterior ridge and rather flat, smooth or slightly concentrically wrinkled beaks; epidermis smooth, shining, pale greenish-yellow or brownish, rayless; hinge line long, straight, edentulous orshowing faint traces of denticles, under a glass, beneath the nacre; nacre soft, bluish-white and irides- cent; muscular impressions faint, irregular, the smaller anterior scar above the larger one; beak cavities shallow. Animal having very long gills, the inner much the larger, united to the abdominal sac throughout their whole length; palpi large, round below, projecting very slightly behind and attached along the whole length of the straight upper border; mantle very thin, slightly thick- ened at the edges; branchial opening closed below into a short papillose Siphon, and separated from the nearly smooth anal opening by a strong bridge; superanal opening not closed below; foot very long, developed at the lower end into a sort of head or button. ‘So named by its author in the Guerin Magazine, but afterwards changed by him to Mycetopus in the Voyage Amerique Meridionale. The genus has been made the type of a separate family by Gill, and was so acknowledged by Pelseneer and. others, but it does not seem to me to be separable from the Mutelidw. Certain shells under favorable light show slight dentilations along the hinge line, which are, no doubt, vestigial taxodont teeth common to the family; the labial palpi and anal bridge are decidedly mutelid in character, and the great development of the foot is paralleled in Solenaia, Lastena, and to some extent by Gonidea among the Unionidae. 934 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. (Group of Mycetopoda siliquosa.) Beaks in front of the center of the shell; anterior end evenly rounded; basal lines nearly straight; posterior ridge quite low. Animal with the characters of the genus. +MYCETOPODA SILIQUOSA Spix. * 4nodon siliquosus Sp1x, Test. Fluv. Bras., 1827, p. 30, pl. XX1H, fig. 2. * Mycetopoda siliquosus bD’ORBIGNY, Guer. Mag., 1835, p. 41. * Mycetopus siliquosus D’ORBIGNY, Voy.Am. Mer., 1843, p,601, pl.Lxvu.—* HANLEY, Test. Moll.,1842,p.224; * Biv. Shells, 1843,p.224.—*CatTLow and REEv#,Conch. Nom., 1845, p. 69.—*H. and A. ApAms, Gen, Rec. Moll., II, 1857, p. 505; 111, pl. cxvinl, fig. 1.—* SowmrRBy, Conch. Icon., XVI, 1868, pl. 1, fig. 2; m1, fig. 2a.—* CLESSIN, Conch. Cab. Ano., 1875, p. 200. pl. LXvul, figs. 2-4; LXIX, fig. 1.—*P#tTEL, Conch. Sam., III, 1890, p. 187.—* von IHERING, Arch. fiir Nat., 1893, p. 56. * Plativis (Mycetopus) siliquosus LEA, Syn., 1852, p.56; 1870, p. 90. * Platiris (Iridina) siliquosa LEA, Syn., 1836, p.56; 1838, p. 34. * Anodonta siliquosa KUSTER, Conch. Cab. Ano., 1853, p. 35, pl. VII, fig.3. * Mycetopoda siliquosa CHENU, Ill. Conch., 1858, pl. 1, figs. 2, 2a, 20, 2c. Bolivia, Brazil; south into Argentina. *MYCETOPODA OCCIDENTALIS Clessin.! Mycetopoda Occidentalis CLEssIN, Mal. Bl. I, 1879, p. 174, pl. x1, figs. 2, 3.— *PxTEL, Conch. Sam., ITI, 1890, p. 187.—* FiscuEr, Jl. de Conch., XXXVIII, 1890, p.8. Heuador. ; MYCETOPODA STAUDINGERI von Thering.? * Mycetopus staudingeri VON IHERING, Arch. fiir Naturg., 1890, p. 131, figs. A, B. Upper Amazon in Ecuador and Peru. MYCETOPODA SUBSINUATA Sowerby. * Mycetopus subsinuatus SowERBY, Conch. Icon., XVI, 1868, pl. Iv, fig. 10.—* CLEs- stn, Conch. Cab. Ano., 1875, p. 205, pl. Lxvul, fig. 3.—* ParEL, Conch. Sam., III, 1890, p. 187.—* FiscHER, Jl. de Conch,, XX XVIII, 1890, p. 8. Bogota; Colombia; Equador. +MYCETOPODA PYGMZEA Spix. * Anodon siliquosus var. b pygmeun Sprix, Test. Fluv. Bras., 1827, p. 30, pl. XXIII, figs. 3, 4. ~ Mycetopus pygmeus SOWERBY, Conch. Icon., XVI, 1868, pl. 11, fig. 4. —* CLESSIN, Conch. Cab. Ano., 1875, p. 205, pl. LXXx, fig. 3.—* P&TEL, Conch. Sam., 1890, p. 197.—* FIscHER, Jl. de Conch., XX XVIII, 1890, p. 8. * Platiris (Mycetopus) pygmeus LEA, Syn., 1870, p. 90. t Mycetopus weddellii Hurt, Moll. Nouvy., III, 1857, pl. xx, fig. 2.—* SOWERBY, Conch. Icon., XVI, 1868, pl. 11, fig. 5.—* CLESSIN, Conch. Cab. Ano., 1875, p. 1 Probably a wide variety of M. siliquosus. 2T have never seen this species, and the author only gives two rough interior out- line figures, but its form is somuch like that of siliquosus that I somewhat doubt its specific value. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 935 203, pl. LXvI, fig. 6.—* FiscHER, J]. de Conch., XX XVIII, 1890, p. 8.—* Px- TEL, Conch. Sam., III, 1890, p. 187. Brazil; northward to Nicaragua. MYCETOPODA HUPEANA Clessin. * Mycetopus pygmeus HuPE, Moll. Nouv., IIT, 1857, p. 98, pl. x1x, fig. 2. * Mycetopus hupeanus CLESSIN, Conch. Cab. Ano., 1875, p. 206, pl. LXV1, fig. 15.— * FISCHER, Jl. de Conch., XXX VIII, 1890, p.8. Brazil. (Group of Mycetopoda ventricosa.) Shell rather short and high, inequilateral subrhomboid with a strong angle at the anterior upper point, cut away below in front, slightly sinuous on the base, narrower behind, strongly truncate on posterior slope; posterior ridge wide and lightly curved, hinge line curved. Animal unknown. tMYCETOPODA VENTRICOSA d’Orbigny. * Mycetopoda ventricosa D’ORBIGNY, Voy. Am. Mer., 1843, p. 602, pl. LX X11, figs. 1-3.— *H. and A. Apams, Gen. Rec. Moll., II, 1857, p. 505.—* SowErby, Conch. Icon., XVI, 1868, pl. 111, fig. 8.—* CLEssIN, Conch. Cab. Ano., 1875, p. 202, pl. LX1X, figs. 2, 3.—* FiscHER, Jl. de Conch., XXX VIII, 1890, p. 8.—* P&TEL, Conch. Sam., III, 1890, p. 187. * Platiris (Mycetopus) ventricosus Lea, Syn., 1852, p. 56; 1870, p. 90. Bolivia. (Group of Mycetopoda soleniformis.) Shell large, rounded in front, but somewhat truncated on the lower anterior part; base line evenly incurved; posterior ridge well devel- oped, curved, truncate on posterior slope; beaks central. Animal that of the genus. t+MYCETOPODA SOLENIFORMIS d’Orbigny. * Mycetopoda soleniformis D’ORBIGNY, Guer. Mag., 1835, p. 41.—*CnEnu, III. Conch., 1858, pl. 1, figs. 1, la, 10. * Platiris (Mycetopus) soleniformis LEA, Syn., 1838, p. 34; 1852, p. 56; 1870, p. 90. * Mycetopus soleniformis REEVE, Conch. Syst., I, 1841, p. 125, pl. xc1v.—* HaNLEy, Test. Moll., 1842, p. 224; * Biv. Shells, 1843, p. 224.—* p’ORBIGNY, Voy. Am. Mer., 1843, p. 601, pl. Lxv1.'—* CaTLtow and RrEve, Conch. Nom., 1845, p. 69.—* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 505; III pl. cxvuu, figs. 2a, 2b.—* CHENU, Man., 1859, II, p. 147, fig. 725.—* ReEve, Elements of Conch., II, 1860, pl. xxxu, fig. 18la, 6.—*SowxrBy, Conch. Icon., XVI,. 1868, pl. 1, fig. 1.—* CLEssIn, Conch. Cab. Ano., 1875, p. 201, pl. EXviil, fig. 1.— “FISCHER, Jl. de Conch., XXX VIII, 1890, p. 7.—* Pa TEx, Conch. Sam., III, 1890, p. 187. * Mycetopus solenoides SOWERBY, Conch. Man., 1839, fig. 151. * Margaron (Anodonta) soleniformis La, Syn., 1852, p. 53. * Platiris (Mycetopus) soleniformis Lea, Syn., 1870, p. 90. Bolivia; Peru. 11843 was the date of issue of the last part of the voyage. The aasonhition of Mycetopus in this work appeared earlier. BIBLIOGRAPHY. It is not claimed that the following bibliography is complete or in all respects accurate. prefixed with an *. Such titles as have been seen by the writer are On account of its great length it has been thought best to make considerable abbreviations. Apami, G. B. Molluschi terrestre e flu- viatili viventi nella valle dell’ Oglio ossia nelle valli Camonica di Scalve di Borlezza, provincie di Brescia e Bergamo. Atti Soc. Pad., V, 1876, Pt. 1. *___ Nuove Forme Italiane del Genere Unio. Bull. Soc. Mal. It., VII, 1882, pp. 129-138. 1 plate. *___ Novita Malacologiche Recenti. Bull. Soc. Mat. It., XI, 1886, pp. 202- 261. 4 plates. - *ApAMS, C. B. Shells of Fresh Pond. Am. Jour. Sci. and Arts, XXXVI, | 1839, p. 392. *____ Catalogue of the Mollusca of Mid- dlebury, Vermont, and vicinity ; with observations. Am. Jour. Sci. and Arts, XL, 1841, pp. 266, 267. *___ Fresh-water and Land Shells of Vermont. In Thompson’s History of Vermont, Pt. 1, 1842. Published separately under the above title without date. — Catalogue of Genera and Species of Recent Shells. Collection of C. B. Adams, 1847. In Marcy’s Exploration of the Red River of Louisiana, 1852, pp. 242-244. *ADAMS, ARTHUR, and ANGAS, GEORGE FRENCH. Descriptions of New Spe- cies of Shells chiefly from Australia, in the collection of Mr. Angas. Proe. Zool. Soc., 1864, pp. 35-40. *ADAMS, HENRY. List of the Shells col- lected by Samuel White Baker dur- ing his recent explorations in Central Africa, Proc. Zool. Soc., 1866, pp. 375, 376. 936 i} *ADAMS, HENRY. List of Land and Fresh- water Shells collected by Mr. E. Bart- lett on the Upper Amazons, and on the River Ucayali, eastern Pern, with descriptions of New Species. Proc. Zool. Soc., 1866, pp. 440-445. *___ Descriptions of six new species of shells, ete. Proc. Zool. 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SYNOPSIS OF THE NAIADES—SIM SON, 67 *LATTER, OSWALD H. Notes on Anodon and Unio. : Proc. Zool. Soc., 1891, pp. 52-59, 1 plate. Separate. Abstract in Jour. Roy. Mic. Soc.,1891, p. 455. *Lma, ISAAC. species of Unios, etc. | Description of six new | Trans. Am. Phil. Soc., 1827, pp. 259- | 273,4 plates. Separate. = Observations on the Genus Unio, | etc., 1829, pp. 71, 12 plates. - all is Description of a New Genus of Naiades, etc. Trans. Am. Phil. Soc., 403-457, 8 plates. 1829, pp. *___ Observations on the Naiades, ete. | Trans. Am. Phil. Soc., 1831, pp. | 63-121, 16 plates. es Observations on the Genus Unio, ete., 1832, pp. 133. zs Observations on the Naiades, etc. Trans. Am. Phil. Soc., 1834, pp. 23-119, 19 plates. *____ Observations on the Genus Unio, | I, 1834, 233 pp, 46 plates. *___ A Synopsis of the Family of Naia- des, 1836; 2d ed., 1838; 3d ed., 1852; 4th ed., 1870. —— Description of a New Unio (spino- sus), 1836. Neue Gattungen von Najaden. Zeits. fiir Zool. Ver. An., 1837, pp. | } 43-53, 1 plate. *___ Description of New Fresh-water | and Land Shells. Trans. Am. Phil. Soc., 1-154, 34 plates. *___ Observations, etc., II, 1838, pp. 152, 29 plates. 1858, pp. : Descriptions of New Fresh-water | and Land Shells. Proc. Am. Phil. Soc., 1840, pp. 284— 289. *____ Continuationof above. Proc. Am. Phil. Soc., 1841, pp. 30-34, 81-83. Description of new Fresh-water and Land Shells. Trans. Am. Phil. Soc., 1842, pp. 163- 252, 23 plates. a Observations, etc., III, 1842, pp. 88, | 23 plates. *_ Continuation of paper on New | Shells. Proc. Am. Phil. Soc.,1842, pp.224, 225. . *___ Observations, etc., V, “LEA, Isaac. [Communication. ] Proc. Acad. Nat. Sci. Phila., 1843, pp. 215, 216. —— Description of twelve new species ot Uniones. Proc. Am. Phil. Soc., 1V, 1848, p. 11. Abstract in advance, no pagination. *__ Names of twelve new Uniones. Proc. Am. Phil. Soc., 1844, p. 8. —— Descriptions of new Fresh-water and Land Shells. Proce. Am. Phil. Soc., 1845, pp. 162- 168. Description of new Iresh-water and Land Shells. Trans. Am. Phil. Soc., 1845, pp. 275- 282, 4 plates. *“—_— Descriptions of new Fresh-water and Land Shells. Trans. Am. Phil. Soe., 1848, pp. 67- 101, 9 plates. *____ Observations, etc., LV, 1848, pp. 101, 13 plates. Descriptions of five new Anodontze, etc. Proc. Zool. Soc., 1850, pp. 197-199; Ann. Nat. Hist., V111,1851, pp. 493-496. * —__ Exhibition of large Unios, etc. Proc. Am. Phil. Soc., 1850, p. 153. *__ On a communication from Professor Agassiz. : Proc. Am. Phil. Soc. ,1851, pp.187-189. On the great size of certain Naiades, etc. Proc. Am. Phil. Soc.,1851,pp.191-193. = Correspondence between Mr. Lea and Prof. Agassiz, etc. Proc. Am. Phil. Soc., 1851, pp. 218- 221. ~_ Descriptions of new species of the family Unionidee. Proc. Am. Phil. Soc., 1852, pp. 251, 252; Trans. dm. Phil. Soc., 1852, pp. 253-294, 18 plates. * 1852, ). 62, 19 plates. | x. On a remarkably large Dipsas pli- catus. Proc. Acad. Nat. Sci. Phila., 1852, p. 52: » On the period of maturing and ejecting young in the family Unio- nide. Proc. Acad. Nat. Sci. Phila., 1852, p. 54. 968 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXII. “LBA, ISAAC. phynote Unio. Proc. Acad. Nat. Sci. pp. 54, 55. *___ Definition of the term species and remarks on classification, etc. Proc. Acad. Nat. Sci. Phila., 1852, pp. 57, 58. *____ Description of new species of Unio- Phila., 1852, nide. Proc. Acad. Nat. Sci. Phila., 1852, pp. 251, 252. *___ Notice of the Mya nodulosa, Wood. Proc. Acad, Nat. Sci. Phila., 1853, p. 368. x pp. 376, 377. *—— Rectification of Conrad’s Synopsis | of the Naiades, etc. Proc. Acad. Nat. Sci. Phila., 1854, | pp. 236-249. *_— Description of a new subgenus of Naiades. Description of anew Sym- | ‘_— On the Castaliasulcata, Krauss, ete. | Proc. Acad. Nat. Sci. Phila., 1853, *“LeA, Isaac. Description of thirteen new Uniones from Georgia. Proc. Acad, Nat. Sci. Phila., 1857, pp. 31, 32. Description of six new Uniones from Alabama. Proc. Acad. Nat. Sci. Phila., 1857, p. 83. *— Description of eight new Naiades. Proc. Acad. Nat, Sci. Phila., 1857, p. 84. *—— Description of three new Naiades. Proc. Acad. Nat. Sci. Phila., 1857, p. 85. ; *—— Description of twelve new Naiades from North Cavolina. Proc. Acad. Nat. Sci. Phila., 1857, - pp. 85, 86. *—— [Remarks on Unio spinosus. ] Proc. Acad. Nat. Sci. Phila., 1857, pe LOW: *——_— Description of six new Fresh-water Proc. Acad. Nat. Sci. Phila., 1856, | Dawoe *—__ Description of a new Triquetra. Proc. Acad. Nat. Sci. Phila., 1856, | Oa 70. ; *—— Description of new Fresh-water | Shells from California. Proc. Acad. Nat. Sci. Phila., 1856, pp. 80, 81. *____ Description of twenty-five new Exotic Uniones. Proc. Acad. Nat. Sci. Phila., 1856 pp. 92-95. *____ Description of four new Exotic | Uniones. Proc. Acad. Nat. Sci. Phila., 1856, | p. 105. *___ Description of the Byssus in Unio. Proc. Acad. pp. 218, 214. *____ Description from Georgia. Proc. Acad. pp. 262, 263. [Communication on Triquetra lan- ceolata, etc. | Proc. Acad. Nat. Sci. Phila., 1856, pp. 300, 301. — Remarks on the visual organs of Unios. Proc. Acad. Nat. Sci. Phila., 1857, p. 17; Jour. de Conch., 1857, p. 208. Nat. Sci. Phila., 1856, Nat. Sci. Phila., 1856 7 * op || of eleven new Uniones | and Land Shells of Texas and Ta- maulipas. Proc. Acad. Nat. Sci. Phila., 1857, pp. 101, 102. *__ Description of four new Exotic Uniones, etc., 1857. *___ [ Proposed change of name of two Unios. | Proc. Acad. Nat. Sci. Phila., 1857, p. 104. |. Descriptions of twenty-seven new Uniones from Georgia. Proc. Acad. Nat. Sci. Phila., 1857, pp. 169-172. [Remarks on plates of Naiades of Siam. ] | Proc. Acad. Nat. Sci. Phila., 1857, | p. 205. | “Description du sous-genre Plagio- | don, ete. R | Jour. de Conch., 1857, pp. 207, 208. *___ Descriptions of Exotic Genera and Species of Unionide. | Jour. Acad. Nal. Sci. Phila., 1857, | pp. 289-321, 13 plates. *____ Observations, ete., VI, Pt. 1, 1857, pp. 34, 13 plates. *—__ Description du Byssus dans le Genre Unio. Jour. de Conch,, 1857, p. 200. *___ Kemarks on Unionide of Nebraska Territory, etc. Proc. Acad. Nat. Sci. Phila., 1858, pp. 15-14. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON. 969 *Lea, Isaac. Descriptions of new Unios from Tennessee, etc. Proc. Acad. Nat. Sci. Phila., 1858, pp. 40, 41. *~__[Remarks on some remarkable Unionide. | Proc. Acad. Nat. Sci. Phila., 1858, p. 114. *—_ Description of four new Freshwater Mollusks from Darien. Proc. Acad. Nat. Sci. Phila., 1858, p. 118. *___ [Remarks on reproduction of Unio | rubiginosus, | Proc. Acad. Nat. Sci. Phila., 1858. Pp. 135. - Descriptions of seven new Margari- tanas and four new Anodontas. Proc. Acad. Nat. Sci. Phila., 1858, pp. 188, 139. % Descriptions of twelve new Uniones of the United States. Proc. Acad. Nat. Sci. Phila., 1858, pp. 165, 166. *___ [Remarks on Triquetra contorta. ] Proc. Acad. Nat. Sci. Phila., 1858, 1Do Laws Descriptions of the forms of thirty-eight Unionide. Jour. Acad. Nat. Sci. Phila., 1858, pp. 43-50, 1 plate, separate. *__ New Unionide of the States. Jour. dead. Nat. Sci. Phila., 1858, pp. 51-95, 15 plates. *____ Descriptions of Exotic Genera and Species of Unionidie. Jour. Acad. Nat. Sci. Phila., 1858, pp. 289-321, 13 plates. embryonic of species United - Observations, etc., VI, Pt. 2, 1858, 52 pp., 16 pilates. * Observations, etc., VI, 1858, 97 pp., 29 plates. *_._ Descriptions of eight new Union- | ide from Georgia, etc. Proc. Acad. Nat. Sci. Phila., 1859, pp. 112, 113. Descriptions of twenty-one new Exotic Unionide. Proc. Acad. Nat. Sci. Phila., 1859, pp. 151-154. from Georgia. Proc. Acad. Nat. Sci. Phila., 1859, | ~ p. 154. Descriptions of two new Uniones *LEA, Isaac. Descriptions of seven new Uniones from South Carolina, ete. Proc. Acad. Nat. Sci. Phila., 1859, pp. 154, 155. Descriptions of twelve new Uniones from Georgia. Proc. Acad. Nat. Sci. Phila., 1859, pp. 170-172. “_— [On dead lewisil. | Proc. Acad. Nat. Sci. Phila., 1859, 100 VT —— [On Unio kleinianus. ] Proc. dead. Nat. Sci. Phila., 1859, shells of Anodonta be p. 177. x Descriptions of four new Exotic Unionide,. Proc. Acad. Nat. Sci. Phila., 1859, p. 187. *____New Unionid:e of the United States. Jour. Acad. Nat, Sci. Phila., 1859, pp. 191-233, 12 plates. *____ Observations, etc., VII, 1859, Pt. 1, 43 pp., 12 plates. [Change of name of Margaritana etowaheusis. | Proc. Acad. Nat. Sci. Phila., 1859, p. 280. *____ Description of a new Unio from Darien. Proc. Acad, Nat. p. 281. *___. [Remarks on four Unios, etc. ]. Proc. Acad. Nat. Sci. Phila., 1859, pp. 329-330. *____ Descriptions of three new Exotic Uniones. Proc. Acad. Nat. Sci. Phitla., 1859, p. 3a. Sci. Phila., 1859, Remarks on the number ofspecies of Unionidee, ete. Proc. Acad. Nat. Sci. Phila., XII, 1860, p. 3. : Observations, ete., VII, 1860, Pt. 2, pp. 38, 13 plates. Wee Observations, etc., VII, 1860, pp. 93, 25 plates. *___ [Remarks on Abnormal Shells. ] Proc. Acad. Nat. Sci. Phila.,1860, pp. 51-53. : Descriptions of eight new Unio- nide from Georgia, etc., 1860, pp. 24. 970 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, XXII. *Lna, Isaac. [On the number of Union- idee in North America. | Proc. Acad. Nat. Sci. Phila., 1860, p. 85. *___ [On letter of Dr. Lewis. ] Proc. Acad. Nat. Sci. Phila., 1860, pp. 88, 89. ‘ Descriptions of four new Unionide | from Brazil, ete. | Proc, Acad. Nat. Sci. Phila., 1860, | pp. 89, 90. | i Descriptions of fifteen new Urnu- | guayan Unionide. Proc. Acad. Nat. Sci. Phila., 1860, pp. 90-92. Descriptions of tive new Uniones | from North Alabama. | Proc. Acad. Nat. Sei. Phila., 1860, pp. 92, 93. *___ [Ona new form of Palpi of Ano- donta from the Uraguay River. } Proc. Acad. Nat. Sci. Phila., 1860, p. Ofte | *___ Descriptions of two new Uniones from Georgia. Proc. Acad. Nat. Sci. Phila., 1860, p. 305. x Descriptions of three new Uniones | from Mexico. Proc. Acad. Nat. Sci. Phila., 1860, pp. 305, 306. *___ Descriptions of seven new Unioni- de from the United States. Proc. Acad. Nat. Sci. Phila., 1860, | pp. 306, 307. Descriptions of six new Unionidie from Alabama. Proc. Acad. Nat. Sci. Phila., 1860, p. 307. *—— Descriptions of three new Exotic Unionidie. Proc. Acad. Nat. Sci. Phila., 1860, pp. 307, 308, 331; 1865, pp. 75,76; ex- | tract in dm. Jour. Conch., I, 1865, pp. | 354, 355. *___ Descriptions ot Exotic Unionidae. Jour. Acad. Nat. Sci. Phila., 1860, pp. 235-273, 13 plates. is New Unionid:e of the United States, | ete. Jour. dead. Nat. Sci. Phila., 1860, | pp. 327-374, 16 plates. *—__. Observations, ete., VIII, Pt. 1, 1860, pp. 56, 16 plates. “LEA, Isaac. Descriptions of twenty- five new Unionide from Georgia, Alabama, Mississippi, Tennessee, and Florida. Proc. Acad. Nat. Sci. pp. 38-41. Descriptions of two new Anodonte from Aretic America. Phila., 1861. | Proc. Acad. Nat. Sci. p. 56. —— Descriptions of twelve new Uniones from Alabama. Proc. Acad. Nat. Sci.’ Phila., 1861, pp. 59, 60. Descriptions of eleven new Unios from the United States. Proc. Acad. Nat. Sci. Phila., 1861, pp. 391-398. Remarks on the number of Unio- nidie, etc., 1862. New Unionidz of the United States. Jour. Acad. Nat. Sci. Phila., 1861, pp. 53-109, 18 plates. “—— Observations, etec., VIII, 1862, Pt. 2, pp. 56, 18 plates. *—— Observations, etc., VIII, 1862, pp. 115, 54 plates. b) Phila., 1861 crs *—— Descriptions of ten new Unionide of the United States. Proc. Acad. Nat. Sci. Phila., 1862, pp. 168, 169. — Descriptions of two Uniones, ete. Proc. Acad. Nat. Sci. Phila., 1863, p. 176. Description of a new Genus, etc., 1862. , *__ Checklist of the Shells of North America. Unionide. i new Exotic Smithsonian Miscellaneous Collec- | tion, II, pp. 52, 1862. Separate. *__ New Unionide of the United States. Jour. Acad. Nat. Sci. Phila., 1862. pp. 53-109, 18 plates. ae New Unionide of the United Statcs. etc. Jour. Acad. Nat. Sci. Phila., 1862. pp. 187-216, 10 plates. *—__ Observations, etc., IX, 1863, pp. 180, 16 plates. *__ Descriptions of eleven new Exotic Unionide. Proc. Acad. Nat. Sci. Phila., 1863, pp. 189, 190. NO. 1205. SYNOPSIS OF THE NAIADES—SIMPSON, abil “LA, Isaac. Description of anew Unio and a Monocondylea. Proc. Acad. Nat. Sci. p. 190. i Descriptions of twenty-four new Unionide of the United States. Proc. Acad. Nat. Sci. Phila., 1863, pp. 191-194. 4 New Exotic Unionide. Jour. Acad. Nat. Sci. Phila., 1863, | pp. 377-400, 10 plates. - Descriptions of the soft parts of one hundred and forty-three species, and some Embryonic Forms of Unionide, etc. Jour. Acad. Nat. Sci. Phila., 1863, pp. 401-456. Phila., 1863, . Observations, etc., X, 1863, pp. 94, | 10 plates. | * Descriptious of six new Unionide | from Lake Nyassa. Proc. Acad. Nat. Sci. Phila., 1864, pp. 108, 109. : | *—— ]escriptions of two new Unionide | from South Africa. | Proc. Acad. Nat. Sci. Phila., 1864, | p. 113. | *_— Descriptions of six new Western | Asiatic Unionide. Proc. Acad. Nat. Sci. Phila., 1864, | ~ pp. 285, 286. *___ Descriptions of three new Exotic | Unionide. Proc. Acad. Nat. Sci. Phila., 1865, pp. 75, 76. a Descriptions of cight new Unios from the United States. Descriptions of fourteen new Mela- nid; etc., 1866, pp. 32. Appendix IV [to Bibliography of the North American Conchology, by W.G. Binney. ] Smithsonian Miscellaneous Collection, IX, 1869, pp. 289-294. *—— Description of twelve new Union- ide from South America. Proc. Acad. Nat. Sci. Phila., 1866, pp. 33-35. | *—_ Description of five new Unios. Proc. Acad. Nat. Sci. Phila., 1866, Da Jes, % New Unionid Melanide, ete. Jour, Acad. Nat. Sci. Phila., 1867, pp. 5-65, 21 plates; Am. Jour. Conch., | 1867, pp. 84, 85. Separate. “LEA, Isaac. Observations, etc., XI, 1867, pp. 146, 24 plates. Index to Volumes I-XI of Observa- tions, 1867, pp. 63. “—— Descriptions of five new Unionidx, ete. Proc. Acad. Nat. p. 81. Descriptions of nine new Unios from Lake Nicaragua. Proc. Acad. Nat. Sci, Phila., 1868, pp. 94-96. *— Description of sixteen new Union- ide, etc. Proc. Acad. Nat. Sci. Phila., 1868, pp. 143-145. *__. Notes on Unios. Proc. Acad. Nat. Sci. Phila., 1868, pp. 145, 146; Am. Jour. Conch., 1868, p. 233. — Descriptions of four new Exotic Unionidee. Proc. Acad, Nat. Sci. Philu., 1868, p. 150. *“—_ Descriptions of seven new Unios from North Carolina. Proc. Acad. Nat. Sci. Phila., 1868, pp- 160, 161. Description of two new Unionide from Ecuador. Proc. Acad. Nat. Sci. Phila., 1868, pp. 161, 162. *_— Descriptions of Unionidze from the Lower Cretaceous of New Jersey. Proc. Acad. Nat. Sci. Phila., 1868, pp. 162-164. Descriptions of twelve new South American Unionide, 1868. *— New Unionidie, Melanida, etc., the United States. Jour. Acad. Nat. Sci. 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Nautilus, XIII, 1899, pp. 6-8, 22, 23, 31, 42-43, 50, 69, 89, 90., 1900. pp. 138, 139. *“WRIGHT, S. Harr. A New Unio. West. Am. Scientist, 1888, p. 60, plate. *___. Unionide of G[eorgi]a, Ala[bama], S[outh] C[arolina], and L[ouisian Ja, in South Florida. Nautilus, TV, 1891, p. 125. * WRIGHT, S. Hart, and B.H. Notes on the Unionide of Southern Florida. Conch. Exchange, II, 1888, pp. 67, Gi, Jobb ali}, *____ Contributions to a knowlede of United States Unionide. Nautilus, X, 1897, pp. 1386-139; XI, 1897, pp. 4, 5. * WYATT, THOMAS. * WYMAN, JEFFRIES. A Manual of Con- chology, etc., 1838, pp. 191, 36 plates. —— Synopsis of Natural History, etc., 1849, 49 plates. Freshwater Shell- heaps of Florida. Am. Naturalist, 1869, pp. 393-403. —— Freshwater Shell Mounds on the St. John’s River, Florida. Mem. Peabody Acad., Salem, 1875, 94 pp., 9 plates. YARROW, H.C. Report upon the collec- tions of Mollusca made in portions of Colorado, Utah, New Mexico, and Arizona. In Report on Geog. and Geol. Sur- veys west of 100th Mer., V, 1875, by George M. Wheeler, pp. 923-954. YuNG, E. Relations de l’organe de Bo- janus chez les Mollusques lamelli- branches, etc. Arch. Sci. Nat., 1887, pp. 428, 429. ZIEGLER. Manuscripts, no date. ZIETEN. C.H.v., Die Versteincrungen Wiirtembergs, 1830-33, 12 parts, 72 plates. INDEX TO SYNOPSIS OF THE NATADES. [Italicised figures, as 749, etc., are used to indicate the principal references. ] Abacoides (Unio) Haldeman............- Abacus (Margaron) Lea...........-----.- Atbacucn @2leunropema) eae seen ose see Abacus (Unio) Haldeman.......-..-..--- Abbevillensis (Margaron) Lea .-....--.-. Abbevilllensiss(Umio)) eal s252-24-5-255-4- Abbreviatus (Unio) Westerlund........-. Aiberrans| (Margaron) Lea----.......------ AN OCARNTS (pov) IOS ocoesocooseaeaconss Aberti (Cyprogenia) Conrad .......--.-- ADertin (Mang arom) sea ss— ey. \eeeaa= AN sient (Wiawt@)) Clombenol so eaagcancdasceose INTENTS: (WOO) IUCR) Bocscgnesecoouceoeesos Abnormis (Unio) Morelet.........--..--- Atbortivus) (Umio)) Heudes-4-25-.-s-29--5- IN oO (OhawlO)) SE\Sooncousossusseesoose Abyssinica (Nodularia) von Martens .... Abyssinicus (Unio) von Martens........- Acrorrhynchus (Unio) von Martens. ..-.- Actephilus (Unio) Bourguignat.....-.--- Atcuensi(@eleurobema)Muea eens ses eeia ACUI ((Oiot@)) JOP sooadeoodecocodsesoecoes Acuminata (Nodularia) H. Adams.....-. Acuminatus (Unio) H. Adams .........-- Acuticosta (Castalia) Hupé -.-......-.--- AXCUUMCORME, Sibanj oso — cesacososouucoosescos Acutirostris (Diplodon) Lea ......--.-.-- PNCULALOStTISH (UmiIO) pWUeaen ses ace eee Acutissimus (Margarita) Lea ...-...----- Acutissimus (Margaron) Lea.....-....-.- Acutissimus (Medionidus) Lea........... Acutissimus (Unio) Lea....--.-.........- Adansoni (Spatha) Jousseaume.......... Adansoni (Spathella) Jousseaume ....... Admirabilis (Cameronia) Bourguignat... /Egyptiaca (Nodularia) Cailliaud......-. fEgyptiacus (Margarita) Lea............. Aigyptiacus (Margaron) Lea....---.-..--. /Egyptiacus (Unio) Cailliaud ........ 820, 821, 822 /Eneolus (Pseudodon) Drouet.........-.. ABIDES (AUVs) ICM cose se ocuseaseades /fquatus (Margaron) Lea.-.-............ ADS VEHHOG) (Whoo) IGA es cesascseagesdoosced /Equatoria (Nodularia) Morelet........-- /Hquatorius (Unio) Morelet .............. AGH) ((WsatO))) INGOs ssccecesccossgsosces Aeruginosus (Nephronaias) Morelet ..... Aeruginosus (Unio) Morelet .........-... Afsopus (Margarita) Lea .......-......-.- /Hsopus (Margaron) Lea ........-.......- =) lo) To 2) bo ra i=) 2 Page. Esopus (Pleurobema) Green....-....---- 509, 764 FABSO ows) (Wfisul@))) (Enreeral — saoscaccadoccodces /Ethiopiformis (Unio) von Ihering .....- 894 fathiops (Diplodon) Lea ..-......-....-.- 877 fHithiops (Margaron) Lea.....--...--..-.- 877 /Kthiops piricicabana (Diplodon) yon iiherins == Soe AS SEES ae Peewee see aae 877 /Ethiops piricicabana (Unio) von Ihering. 877 AR Woy as) (WiaWO))) IGE ssacosooocesecacadocde 877 Aferula (Parreysia) Lea-.......:..-.-.--- 818 Aferulus}(Margarom) Wear syes2) ssh ece a 848 ANieAOULDIS) (ORM) JOE, -soagoccecousosocorss 848 ANWibaVis) (IEA obs) ICE se socoseaeonesodece 537 ATinisi(Margaron))) eames ceecsaan seen 537 ASsiibavTs| (ia) TWAWCIO 3. Ssoncsocosacccaas 799 Aim ays) (Ow) Ie. sae asaneacoococadsaueun 587 ANIA AUIS (Vado) SOnEWOWo so socsoocescocuonce 531, 5384 Africanus (Margaron) Lea....-.......-.- 825 ANUBIS AMD) (IOhaMO)) LEE cancscaccasoacucedoe 825 Agricolarum (Anodon) Heude.....-...-. 638 Aheneus (Margaron) Lea ..-.-.----.-22.: 736 FNS aero} (Wiad) IUCR, Soososcesacedesseasec 736 Alabamensis (Lampsilis) Conrad .......- 57h Alabamensis (Margaritana) Lea ......... 619 Alabamensis (Margaron) Lea.-..........- 619 Alabamensis (Unio) Conrad ..--......... 574 Alabamensis (Unio) Sowerby .-...-------- 619 Alatan(Burtomia) Am cCeyeeeeeeesereeeeecre 904 JNeniy (Oe hydie)) SOWA oo occocseckccoosuce 871 Alata (Lymnadia) Swainson .......-.-.-- 567 Alata (Metaptera) Stimpson ..-....---..-- 567 ANE WIE) (MOBI) IUGR) o cconooseeabosaseaoaee 904, JMG hie (MAE) BANOS ssacuccadaaadnonoocae 567 Alata (Mysea) Swainson ....-.--..----... 567 Ale hie (2k abeks)) Ase) O25 48a eccaoospeeebunc 904 Alata simpsoni (Mutela) von Martens ... 904 leva, (Sioehdae)) Ie), sSoseosasosceaueaceone 904 Alata(Symphynota) eas - 2-522... -2----- 567 PAV atau @Wmi ©) slamanck tees scene c= 567 Alatus (Lampsilis) Say.......-..---...--- 567, 678 Alatus (Margarita) Lea...........-.--..- 567 Alatus)(Margarom) sea asec ciece = eeee- 567 Alatus poulsoni (Lampsilis§ Conrad ..... 568 Alatus (Prisodon) Sowerby ...-..-------- S71 /Nenaoks ((Ohabio)) SEhy ceosssoassoacuse 566, 567, 577, 581 MlasmiGdomtarsayecseeencseccia see 506, 510, 514, 666 AMlasmod oni Swalnsom 2. <2 -)1s)-etsiel ee reicjni= 666 PAASMTOC OMba SAV en seers eer 666 Alasmodontina (Complanaria) Stimpson. 663 Agim @dlorn mings. b aoe scoscsepcgaooousn eed 501 1000 INDEX. , Page. Page. Alasmodontinus (Unio) Peetel.........--. 663 | Angasi (Anodonta) Peetel ................ 893 Aleroni (Unio) Companyo and Massot ... 686,699 | Angasi (Margaritana) Petel ............. 893 Alexandri) (Umi0)) Kiobelt)s22e-s-2- sacs. 686 | Angasi (Unio) Sowerby ..-....:..----.--- 893 Alfierianus (Unio) Bourguignat.......--- 861 | Angulata (Anodonta) Lea ..............-. 658 Alienigenus (Lampsilis) Crosse and = || Anguilatal(Gonidea))lheaeeeeenssssseeeee 658 Mischerie es aeroplane 572 | Angulata (Margarita) Lea ....... seeneaan 658 Alienigenus (Unio) Crosse and Fis- Angulata (Margaron) Lea.............--- 658 GHET ease SUE Cam sees aera mee eae o72 | Angulata (Mya) Wood ..........-.:.....- 869 Aligera (Lepidodesma) Heude.......-.-- 587 | Angulatus (Margarita) Lea .............. 869 Alta (Pleurobema) Conrad..........--..- 756 | Angusta subflava (Mya) Schroéter ........ 682 Altilis (Lampsilis) Conrad .............-.- 529 | Angusta (Unio) Lamarck ..-..-....-..--- 744 Al tilish (Man garita) bean eee sereee ere. 529 | Angustata (Anodonta) Clessin ........... 927 AUUISK(Mancarom) Ue hace racer ereeee el 529 | Angustata (Iridina) Sowerby ............ 904 JN Whi (Oia) (Crormb eel aocagccansassascose 529 | Angustata (Mutela) Sowerby ............ 904. ANMUUTE: (OLONO)) IRCEVAsccoacasecaasodascquses 532 | Angustatus (Margarita) Lea ............ te 71 ANITAOES): (GMieny SE NRO) ILCs saodasosocaoasesous 756 | Angustatus (Margaron) Lea ...-.-..--... 731 Altus (Wii) sConraditesessscer eee eee 796 | Angustatus (Unio) Lea.............-...-- 731 Amabilis (Margaron) Lea.........--.-.-- 720 | Annulatus (Anodon) Sowerby ..------.-- 618 INDE ong) (pao) IOCH; ve oucccsocasoaucecsod 720] | AnodoniOkeneerenee se eee eee eee er eeee 620 Amazonensis (Anodonta) Lea......-...-- 928 | Anodonta (Bruguiere) Lamarck......... 501, Amazonensis (Glabaris) Lea ...-.......-- 928 506, 513, 514, 620, 658, 832, 919, 923 Amazonensis (Margaron) Lea.......----.- 928 | Anodonta Valenciennes.-.-° 2222. 52222-2 931 Ambifaria (Nodularia) von Martens -.... 823 | Anodonteeformis (Nodularia) Tapperone- Ambifarius (Unio) von Martens...-...... 828%) 2. Caneirit tec. sieeassc cere eee een eeeee 818 Ambigua (Alasmodonta) Say ...---..--.- 673 | Anodonteformis (Unio) Tapperone-Can- Ambigua (Castalia) Blainville.........-. 865 QPP es dae ue ce ue alae een eee ees 818 Ambigua (Castalia) Lamarck.......-...- 8635668") MAMOdOmUeSKCUVICT Saas etae eee eeeeeeeeere 620 Ambigua (Castalia) Sowerby .-..--.----- 864 | Anodontina (Unio) Lamarck ............ 855 Aimbigua (Hemilastena) Say....-....-.-- 673 | Anodontine Swainson.......-....-.--..- 501 Aybigua (Margaritana) Kuster........-- 673 | Anodontinus (Pseudodon) Rochebrune.. 840 Ambigua (Mya) Wood.........-...------- 864 | Anodontites Bruguiere............---.-- . 620, 624 Ambigua (Unio) Deshayes.....--....--.- 863 | Anodontoides floridensis (Lampsilis) Ambiguus (Diplodon)...........-.--...-- 874 1U Cas raaenanrensgopoDUosdeerHhsocduDote LAA Ambiguus (Tetraplodon) Sowerby .-.-.--- 863 | Anodontoides (Lampsilis) Lea..........- 54,3, 544 Ambiguus (Unio) Philippi.....--.....-.. 891 | Anodontoides (Margarita) Lea ....-....--. 543 Amblamodon Rafinesque .........-.-...- 673 | Anodontoides (Margaron) Lea....-....-- 543 Amethystus (Anodon) Sowerby....--.---- 929 | Anodontoides Simpson.....--.------- 906, 514, 658 Amnicus (Unio) Rossmiissler.........-.-- 698 | Anodontoides (Unio) Lea.......-..-- 903, 509, 548 Ameoenus (Lampsilis) Lea ....--...-..-.-- 555 | Anodontoides (Unio) Reeve...-..-.:-.--- 544- Amoenus (Margaron) Lea ......---:-..--- 5dp el AMOCdONtOpSis Sim psonlee sere ceereree 658- /ANsaoKoevolbis){(\Upowke))) IUCEy Sea sasedsaeoscdsandoop 555 | Anserina (Margarita) Lea.......--.------ 924- Amphichenus (Lampsilis) Frierson ..... 575 | Anserina (Margaron) Lea................ 924 Amphicheenus (Unio) Frierson ....--.... 575 | Anserinus (Anodon) Spix........---.-..- 924 Am plus) (Wimi oO) Mwealtesasseeciscsecereeeeeee 724 , Anserirostris (Anodonta) Kuster ........ 625- Ampullaceus (Diplodon) Lea ............ 87 | Anthonyi (Margaron) Lea..........-.-.- 708- Ampullaceus (Margaron) Lea.......-....- SEE | Not ovoyonyal (istic) ILE) Soccosasscocccocusss 708- Ampullaceus (Unio) Lea......-.22.-..%.- 874 | Antiniloticus (Unio) Bourguignat .....-.- 861- Amygdalonaias Crosse and Fischer ...-.. 604 | Antiochianus (Unio) Locard............- 689 Amygdalum (Lampsilis) Lea ...-......-- 561,562 | Antrosa (Amblema) Rafinesque ......-.- 744 Amygdaium (Margaron) Lea ..-......-.. 561 | Aperta (Anodonta) Rafinesque -........- 933 Amy odalume (WinioO)) Mea seesesss cee eases 561,569 | Apicinus (Lampsilis) Lea .........-...... 551 Anataria (Spatha) Jickeli....-........:.- 902 | Apicinus (Margaron) Lea ...........--.-- 551- Anaticulus (Margaron) Lea............-. 7022 wApreinus! (Unio) eases eee eee eeeee dol INakehaowVlis (Whiadwko)) ILE soo e ee guceusuauosee 752 | Apicellatus (Ptychorhynchus) Heude.... 851 Anatina (Anodonta) Draparnaud.......- 626 | Apicellatus (Unio) Heude........ eee 851 Anatinus (Anodonta) Sowerby.....-...-. 648 | Apiculata (Quadrula) Say-.--.-..-.=----- 778 Anatinus (Mytilus) Linneeus......-...--. 625 | Apiculatus asper (Unio) Pzetel........--- 776 Anceps (Nodularia) Deshayes.........-..- 814 | Apiculatus (Margarita) Lea...........-.- 778 Anceps (Unio) Deshayes ---.-..-.-.-...- 814 | Apiculatus (Margaron) Lea......-..-.--- 778 Anceyi (Brazzea) Bourguignat.......... 906,907 | Apiculatus (Unio) Lea ...--......------.- 778 Anceyi (Cameronia) Bourguignat ......- 909 | Aplatus (Diplodon) Reeve........----.-- 881 Anceyi (Grandidieria) Bourguignat ..... 829. | Aplatus (Unio) Reeves... 2- =. a-eea-n eee 881 Anceyi (Moncetia) Bourguignat ........- 901) AplodoniSpixeteee=-eeeeee eee eee eseceeee 910 Anceyi (Spatha) Bourguignat..........-. 898,901 | Apollonica (Anodonta) Bourguignat.... 648 Andersonensis (Unio) Lea ...-....-....-- 747s) Appius beaCheeraereseeeer cereeee teeters 583 Andersonianus (Unio) Nevill .......-..--- 812 | Appressa (Pleurobema) Lea......-------- 749 INDEX. 1001 Page. Page. PAM GESSUS(Umi1O)) Weaee ee eieeie-teretelsie = 749 | Arietina (Chelidonopsis) Rochebrune.... 906 Apprimus (Diplodon) Lea..........------ 885 | Arkansasensis (Anodonta) Lea ........-- 617 Apprimus (Margaron) Lea...........---- 874 | Arkansasensis (Lampsilis) Lea........--- 557 ANjoyoribaayatsy (Wowie) IU bee sososeasoeesoses 874 | Arkansasensis (Strophitus) Conrad ...--. 617 Approximus (Lampsilis) Lea.......-..---- 537 | Arkansasensis (Unio) Lea....----...----- 557 Approximus (Margaron) Lea.....-.-.---- 537 | Armatus (Mycetopus) Heude .......-.... 656 ANjajoroparnen ots} (Wao) IUCE ee SeoeeoneecEobe BBi7/ ||) ARO DENBY (lUhouke)) (Corenpiel | Soeeacoseecases 545 Aquilus (Margaron) Lea .-....-..--.--.-- (2 eASCian (Unio) Elan Cyeeecseeese se seee aa 861 AAG WUNTS (OpswO)) IEE Abo eoascosseeoseeaeees 727 | Askewi (Quadrula) Marsh ............--- 735, 786 Aradess (Umno) Philip pies asses eee = 683 | Askewi (Unio) Marsh ...:-.....-..-.--..- 786 Araneosa (Zaira) Rochebrune --..-..-..--- 862 | Aspatharia Bourguignat ..........-.--.-- 901 PARAL US (Mar raArO Mn) edema eeeeeer cia (44 Asper (Marg anita) ueaieenass se ease eee eee 776 JNTENTS ((Whert@)) Clormhe:\6looeaseesssaeoosesees 706 | Asper (Margaron) Lea ..--..-----.------- 776 ANWDITUS (What) Ieee socosesseeessesoccosee (He, ||: INGjorere: (Oho vobewule))) Ibeeie Aaa a aecesoeeSase 776 Araucanus (Margaron) Lea ...--.....---. SISO) || ANgioere (Wioht@))) GER), se occesncosuaccouoscnseo 776 Araucanus (Unio) Philippi .............-. 880 | Asperatus (Margaron) Lea..........-.--- 780 Arceformis (Anodonta) Heude ......-.-. GiTaeASperaitusy CUMI1O) MCA seats ae eerie 780 Areczeformis (Margarita) Lea......--....-.- 519 | Asperrimus (Margarita) Lea ............. 7717 Areseformis (Margaron) Lea .....-.--.-.- 519 | Asperrimus (Margaron) Lea ..........--- 777 Arezeformis (Truncilla) Lea.:.........-.-- 519 | Asperrimus (Unio) Lea ......-...------.- 777 Aree LOnMI Ss (UO) Weaken tsa nella 519 | Asperula (Nodularia) Lea ..........---.- 81h, ATOIGEaAG Stay Nol so aoaeaacoaaseecoace 506, 514,661 | Asperulus (Margaron) Lea.......-.--...-. 814 FACIGCOPSIS| SUM PSOM mee eerier eee HUG holo S61.) Alsperuiias: (Unio) Weais ees seen ela 814 ArconaiaComra den eene rea esne Hee 506, 515, 580,859 | Astierianus (Unio) Dupuy.-.-....-..--.--.- 692 Arctatus (Margarita) Lea ...........-...- lg) ZNiwere((WBhablo) ECE seasoocke dussosscocsaecne 568 Arctatus (Margaron) Lea ....--.- ena saes (alia We Aterk (Unio) Nil ssonys-sea-eee eee eee eee 697 Arctatus tortivus (Unio) Lea............. 720 | ANuere (haute) 1GVen Ae) semen spascadsoacedcasco 692 ANTECHEM DIS) (iano) ClooneVelo ee easencosesccors pe ee Actrarcas (WM10)P Swim SOM eee eee rice se 881 ATC LAGS (UNTO) HeTUSSa Cee )=tr=jeee/a\e-iel-i-1 OLS eAtira tay (Wm10) ES waimsonessseas-e mere eerie 574 Arenlor (Margarita) Wean ia cc. -snleise « 704 | Atratus (Unio) Sowerby-..2-----2..5---<5 881 Archon (Miargaron)) Wear ese erica eq loae 704 | Atrocostatus (Margaron) Lea ...-.-...-.. 768 ANseottilone ((WhavlO)) IUe2) Coc jedconbadoecensebe O45 Ato costatusi (Umi o) pease ais eerste 768 Arcuata (Alasmodonta) Barnes ....--.--. 676 | Atrocostatus (Umio) Reeve... 2.2.2.2... 5: 771 Arcuata (Anodonta) Hupé ........-.--.-- 915 | Atrocostatus (Unio) Sowerby..-...-.------ 769 Arcuata (Iridina) Potiez and Michaud .. 899 | Atromarginatus (Margaron) Lea.......-- 706 Arcuata (Margarita) Lea..........--.-... 899 | Atromarginatus (Plectomerus) Conrad... 706 Arcuata (Margaritana) Stimpson ........ 676 | Atromarginatus (Unio) Lea......:...---- 706 Arcuata (Margarom) lea .......-2..-.--.-- 899 | Atropurpureum (Alasmodon) Rafinesque. 672 ATOM, (Miyep) IBEWOMIS > coaoesessacbucene 676 | Atroviolacea (Obliquaria) Rafinesque.... 744 Arcuata (Spatha) Cailliaud .............. 899 | Atrovirens (Anodonta) Philippi-...--.--- 624, 93: Arcuatus (Mycetopus) Fischer.........--. 656 | Atrovirens (Unio) Rossmassler.......--.- 698 Arcula (Alasmidonta) Lea ....-....-...-- 672 | Attenuata (Anodonta) Held...........-.- 623 Arcula (Alasmodonta) Clessin......-..--- 672 | Attenuata (Obliquaria) Rafinesque ....-- 744 Arcula (Baphia) H. and A. Adams.....-. 672) | eAttenuatus | (Umio) icamess= seers eres 736 Arcula (Margaritana) Lea.......-.--...-- 672 | Aubreyi (Anodon) Heude...-.-....--.---. 639 Arcuilan(Marearom))) Tea 2.52 92 2-2 =~ - 672 | Aucklandica (Unio) Gray ....-...-..----- 889 Arse@ouley (han) 1stewMENZ soe eeoaseaccspadece 672 | Aucklandicus (Margaron) Lea —........-. 889 Arcust (Mars aritay suedeererrn sce teessre 704 | Aurata (Anodonta) Kuster..........2.--- 637 ANOLE (MEME N CONN) IVE) Sosunseceseseesooes 704 | Auratus (Margarita) Lea................. 880 ANIROWIS: ({Wratko)) (Cloumeaoloe sosceccomsnosesses 704} Auratus (Margaron) Lea.......-....--.-- 880 Ardusianus (Unio) Moquin-Tandon...-.. 686m eAtaraihusy (Wii oO) Kester: ae nsee ee mei selearele 883 Arealis (Anodonta) Kuster.........-...-- 625) eAuratus) (Unio) Pihulippies see. a. ears 880 Arelatensis (Anodonta) Dupuy .-...-.--.- GOL |p Aivoey ores (Wienke) 1exenes cadnaconeqoaeecoccs 881 Aremprosthus (Unio) Locard............. 689 | Auratus (Unio) Sowerby .....--.---.----- 881 Areolatus (Anodon) Sowerby...--.--.--- 925 | Aurea (Margaritana) Petel.............- 836 Areolatus (Anodon) Swainson .........-- GIG eAtumear(@wadmuilay) leas ee se perettael eller 783 Argentea (Anodonta) Lea ..........-..-- 659 | Aureus (Anodonta) Peetel........-.-.--.- 648 Argentea (Margaron) Lea....--.-.--.---- 659 | Aureus (Diplodon) Simpson..-........---- 883 Argentea pannosa (Pleurobema) Simpson 763 | Aureus (Margaron) Lea...-...-..-------- 783 Argentea (Pleurobema) Lea.......----.-.- 760,763 | Aureus (Pseudodon) Heude....-....----- 836 Argenteus (Margaron) Lea..-...-....-..-- NGSmlpeNumeuss (Unio) wWuea ens near leeere eee aris 783 Argenteus (Strophitus) Conrad .......-.-- 659 | Auricularius (Unio) Spengler......-.----. 676, 678 ATS enceusk(Um1O) Geass eeeece eer ecee AOR. || Aavarores Sibsasoove sc sesoceseosocboocbecoacc 849 Argenteus (Unio) Sowerby...-..---.----- 749 | Aurorea (Parreysia) Heude..........---- 849 Argyratus (Lampsilis) Rafinesque.....-.- 577 | Auroreus (Unio) Heude..........-...-.-- 849 Arietina (Chelidonura) Rochebrune..... 906 | Australis (Diplodon) Lamarck ....-.-...- 890, 891 1002 INDEX. Page. Page. Australis (Hyridella) Swainson .....-..-- 891 | Batava (Mysea) Turton ....-...-......... 696 Australis (Lampsilis) Simpson ......-.--- 544 | Batavi (Unio) Rossmiissler............... 697 Australis legrandi (Diplodon) Petterd -.. 891 | Batavus (Margarita) Lea................. 697 Australis (Margarita) Lea ....-.........-. 891 | Batavus (Margaron) Lea.............-..- 697 Australis (Margaron) Lea ..........------ 891 | Batavus (Unio) Maton and Rackett.....- 513, Auustralis\(Unio)pHamleyeeessss=-e eee ee 890 675, 677, 678, 681, 691, 696, 697 Aistralisi (Unio) Kuster eees ser seen eae 890 | Baumanni (Spatha) Sturany -............ 899 Australis (Unio) Lamarck.........-.----- 888 | Bazini (Quadrula) Heude.............--. 800 Aya (Monocondylea) Theobald.....-.---- 83 Jey vawovl (Wp) ISIGWC ococcnconcoosuesosec 800 Aya (Pseudodon) Theobald ......-.------ 839 | Beadleiana (Quadrula) Lea ........-.-.-. 784, 786 Avellana (Pleurobema) Simpson.....-.-- 758 | Beadleianus (Margaron) Lea...-.-..-.--- 786 Averillii (Unio) B. H. Wright...........--. 560 | Beadleianus (Unio) Lea........-.-..-.... 785 Averyi (Nephronaias) Lea ..........----- 593 | Bealei (Anodonta) Lea........-..--.----- 64h ASyereval (Oia) WEEK coat esceccpemaeonesose 093) | Bealeig@iarganom) Wears eee es see eee eee 564, 645 Avicularis (Hyria) Lamarck .......-.---- Sal ||, sekeewlent ((IOfiouko)) OCH, soodecccsssa Bs Dees 564 Avicularis (Unio) Deshayes....-.-.------ 871 | Beaverensis (Margaron) Lea............- 724 Avicularis var. b. (Hyria) Lamarck....-... 870)" Beayerensisy (Unio) Wea nee aeee eee 724 Ayonensis (Anodonta) Moquin-Tandon.. 622 | Beccarianus (Unio) Tapperone-Canefri .. 851, 852 Avonensis (Mytilus) Montagu .....-.---- 622 | Beccarianus (Virgus) Tapperone-Canefri. 852 Avonensis (Mytilus) Turton ......-...--- 622), |; Bedmulllis (Unio) iMateseesseeeeeeeeeeereee 891 PASIACUIS) (Wla1O) uOCATCeneasas saaeeae teens 689 | Bellamyi (Nodularia) Jousseaume .-..--.. 822 Aztecorum (Lampsilis) Philippi.........- 672 | Bellamyi (Pharaonia) Jousseaume....... 822 Aztecorum (Margaron) Lea...--...-..... 572 | Bellamyi (Spatha) Jousseaume .......... 896 Aztecorum (Unio) Philippi .............. 572 | Bellua (Anodonta) Morelet .............. 584 Badium (Alasmodon) Rafinesque.-...--.. 673) 4) Bellual(Cristaria) Morele tees seeeee sees 58h BaGdius) (Unio) PKoOkelieeees sees e eee 699) eB ellwlus| (Unio) plea ieeesss- seer eee eereee 746, 747 Bagdadensis (Margaron) Lea .....--.---- 822 | Benedictensis (Anodonta) Ferussac....-. 644 Bagdadensis (Nodularia) Bourguignat.-.. 822 | Benedictensis (Margarita) Lea..........- 644 Bagdadensis (Unio) Bourguignat .....-... 822 | Benedictensis (Margaron) Lea .......--.. 644 Bahiensis (Anodonta) Kuster....-...---- 925 | Benedictensis (Symphynota) Lea.....-.- 644 Bahiensis (Glabaris) von Ihering ........ 925 | Benedictii (Anodonta) Latchford ......-.. 644 Baikii (Spatha) H. Adams ......-...-...- 902.| Benedictii (Margaron) Lea............--- 644 Bairdianus (Margaron) Lea-....-..--.--.. 563 | Bengalensis (Anodon) Sowerby..--..-..- 832 Bairdianus (Unio) beass-2--2----- + -.- = 563 | Bengalensis (Margarita) Lea............. 832 Bakeri (Parreysia) H. Adams...-...-.---- 846 | Bengalensis (Margaron) Lea............. 832 Bakeri (Unio) H. Adams...............-- 846 | Bengalensis (Unio) Lea .........-..-..--- $82 Bakeri (Unio) von Martens ..........-..- 846 | Bensoni (Margaron) Lea.........-......- 656 Bakoyi (Nodularia) Rochebrune.....--.. 824, | Bensonianus (Mycetopus) Peetel ......... 656 Bakoyi (Unio) Rochebrune ....-.---.-..- 824 | Bergi (Anodonta) von Ihering ...--.....- 933 Baldwinensis (Margaron) Lea ......-..-- 723 | Beringiana (Anodonta) Middendorff .... 584, 628 Baldwinensis (Unio) Lea ......---.-..--- 723 | Berlandieri (Lampsilis) Lea...........--- 570. Baletonicus (Unio) Kuster ..-............ 683 | Berlandieri (Margaron) Lea.....-...-..-- 570 Balonnensis (Unio) Conrad ..........-... 891 | Berlandieri (Unio) Lea ...-......-.-.222- 570 Balzani (Fossula) von Ihering -.....-.-.. 914 | Beskeanus (Diplodon) Dunker....-...-.. 875 Balzani (Iheringella) von Ihering -...... 914 | Beskeanus (Margaron) Lea .........-.--- 875 Balzani (Plagiodon) von Ihering ...--... 914 | Beskeanus (Unio) Dunker ..:_........-.. 875 Bambousearum (Anodon) Morelet....... 930 | Bhamoensis (Parreysia) Theobald ...-... 843 Bambousearum (Glabaris) Morelet ...--. 930 | Bhamoensis (Unio) Theobald ..........-. 843 BAG (Umi oO) PKeUstereee eee ee sees te 698 | Bialata (Barbala) Chenu .-......-..-.-.-- 584 Bandinii (Unio) Rossmissler......-....-- 686 | Bialata (Symphynota) Lea..........-...- o84 Baphia H.and A. Adams ....-.-......... 674) -Bialata)(Umio) Hanleyaesse see esseee eee 584 iBaphicwMeuschenteseaese esses ee ee 674 | Bialatus (Hyriopsis) Simpson .....--.-.-- 579 BarbalaraumphreySenseeeee sae sees 501,583 | Biangulata (Anodon) Sowerby....----..- 658 Barbata SOweL Over ce oe eee eae eee ee 583 | Biangulatus (Lampsilis) Lea..........--- 533 DotA ONO har GU o ota sana naraanoosee aaa sae 861 | Biangulatus (Margaron) Lea............. 533 Barnesiana (Pleurobema) Lea........--.- 761 |) Biangulatus) (Umio) eases essa asset 533 Barnesianus (Margarita) Lea ............ fol | Bi-caelatus (Unio) PReeves eee s seer eeees 548 Barnesianus (Margaron) Lea.........-..- 751 | Bicolor (Unio) Rafinesque -......-.------- 744 Barnesianus) (Unio) measesass-n ese ose 751 | Biemarginata (Truncilla) Lea ........... 52h. Barrandii (Unio) Dupuy ..------.------.- 692 | Biemarginatus (Margaron) Lea ......-.--- 524 Barrattii (Margaron) Lea -......-....-.-- 726 | Biemarginatus (Unio) Lea ..........-.--- 524 Barra thin (Unio) gdieayaenssseeeee eee eees 726 | Biesiana (Parreysia) Heude...........-.- 850 Barrotti: (Unio) skeusterseeseeereeeceeea a= 735 | Biesianus (Unio) Heude .............--.- 850 Barrottis (Unio) sesetel teres sse see cae 726 | Bigbyana (Pleurobema) ........-----.--- 760 Basalish(Wnio) pba csseee see aac 724 | Bigbyensis (Pleurobema) Lea........---. 751 Batava (Mya) Maton and Rackett ....... 696 | Bigbyensis (Margaron) Lea .....-..-..... 752 INDEX. 1003 Page. Bigbyensis (Unio) Lea .....-...---------- 7a1 Bigerrensis (Unio) Millet -............... 692 Bigibba (Anodon) Heude............-..- 638 Bigorrensis (Unio) Locard.........---...- 692 Bilineata (Margarita) Lea..........----.- 855 Bilineata (Symphynota) Lea..........--- 855 Bilineatus (Margaron) Lea.-.-......-.---- 855 Bilineatus (Unio) Hanley............-..- 855 Billotianus (Unio) Charmes-..--.......-- 847 Biloba (Epilobasma) Rafinesque......--. 744 BINGURUSHO MM SOMES see eyaee ee eioe selec 839 Binnmeya (Diplodon) Weass. 4. css s-- 878 Binneyie(Margsarom)) Wears. secnac- 0-1-1 878 Binmeyas (Wm1O) ewes cacaeee eaten cae 878 Binominatus (Lampsilis) Simpson -..-...-. 528 Birmanus (Unio) Hanley and Theobald . 845 Bischoffi (Unio) von Ihering............. 894 Bissellianus (Margaron) Lea.....--....--. 743 Bisselliiaaisy (WimI1O) | Weasels ral a= Th3 Biwe (Nodularia) Kobelt ......--...---2- 810 lerhye® (Wiewlo)) IXC OC GdosasausosecusenacEe 810 Blainvilleana (Anodon) Sowerby..-.---- 924 Blainvilleana (Anodonta) Lea........--- 914, 915 Blainvilleana (Columba) Clessin ....--..- 915 Blainvilleana, (Heila) Lea-..--:2-5------- 915 Blainvilleana (Margarita) Lea........-.. 915 Blainvilleana (Margaron) Lea........--- 915 Blandianus (Margaron) Lea ....--.------ 779 Blan ciamusy (Wmio) Wea eceae se aeclecea 778 Blandingianus (Margarita) Lea........-. 742 Blandingianus (Margaron) Lea .-....-.--- 742 Blandingianus (Unio) Lea ........---.--- 742 iBleaverensisi(WUmio)Pesetel seeeee see 724 Bloyeti (Spatha) von Martens ......-.-.--. 898 Bloyeti (Spathella) Bourguignat.......-.. 898 Bohmi (Nodularia) von Martens......... 823 Bohmi (Unio) von Martens ....--......-. 823 1sxov ht (imho) Chl scokeoaoseceousebesuesuacd 783 Bonelli (Anodon) Sowerby .......-..---- 654 Bonelli (Leguminaia) Westerlund -....-. 654 Bonelli (Margaritana) Kobelt...-.....--. 654. Bonelli (Microcondylea) Clessin ....-.-. 654 Bonelli (Microcondylus) Drouet .......-. 654 Bonelli (Unio) Rossmassler -..........-.- 653 Bonellii (Baphia) H.and A. Adams .....- 653 Bonellii (Margarita) Lea...........-.-... 653 Bonellini(Margaron)) Wears. 2-. ss ssseee 653 Bonneaudi (Margaron) Lea .......-.....- 814 Bonneaudi (Nodularia) Eydoux ....-..--. 813 Bonneaudi (Unio) Eydoux..-............. 813 Bonplandi (Unio) Valenciennes ......... 884 Borealis (Lampsilis) Gray..........-.---- 585 1siOIRSHU LIS ((\WtebKO))) EsehYsgaacdecoccsoocssades 535 Borellii (Nodularia) Ancey ..........---- 823 Borel (Unio) FAM Ceyjeace- sees eee SRE 823 Borneensis (Ctenodesma) Issel......-..:- 853 Borneensis (WUmio)) Issel -222 5222-2 -42--2- 852, 853 Bourguignati (Brazzea) Bourguignat.... 907 Bourguignati (Burtonia) Bourguignat... 578 Bourguignati (Cameronia) Bourguignat - 909 Bourguignati (Chambardia) ............-. 902 Bourguignati (Grandidieria) Joubert .... 829 Bourguignati (Leguminaia) Locard ..... 6951 Bourguignati (Mutela) Bourguignat..... 904, Bourguignati (Pharaonia) Rochebrune. . 821 Bourguignati (Pleiodon) Bourguignat... 909 Page. Bourguignati (Pseudospatha) Bourgui- OMAG ete Heelocicare aera Hee a SER Sree Sanne 578 Bourguignati (Spatha) Bourguignat..... 898 Bourguignati (Spathella) Bourguignat .. 898 Bourguignati (Unio) Landran ........... 821 Bourguignatianus (Margaron) Lea ...... 687 Bourguignatianus (Unio) Lea............ 687 Bournianus (Margaron) Lea ............. TAT Bournianus (Pleurobema) Lea........... TLV Bournianus) (Unio), Leae-2----.2----2--.-- 747 IsxOUHyeiat ((Oabko)) Whale ce oceoeceogecdsaGs 814 Boydianus (Margaron) Lea .............-. 536 TSO NShEH AUOIS) (Wha) IVEHSebdecaosooces scone 536 Boykiniana (Quadrula) Lea.........-.... 770 Boykinianus (Margaron) Lea............ 770 Boykinianus (Plectomerus) Conrad...-.- 770 Boykimiamusy (Unio) Weaeas: esses eee 770 Bracteatus (Lampsilis) Gould...........-. 543 Bracteatus (Margaron) Lea ...-......-..-. 543 Bracteatus| (Umi ©) (Gould eese arse eser ses 543 Brandti (Anodonta) Drouet.......-..-.-.- 648 Brandtii (Nodularia) Kobelt............. 810 JayRaChadl((Ohailo)) ION Sepsasescoesaccosp 810 Brazosensis (Margaron) Lea .........-..- 768 iBrazoOsensisy (Unio) sWeadeesseee aes aeee ene 768 Brazzea Bourguignat ._...........--- 506, 515, 906 Brevialisi(Umio) i Crouchee sense. seen eee 792 Brevialis (Unio) Lamarck..:.........-... 691 Brevialis (Unio) Sowerby ..:-......--.--- 602 Breviculus brittsi (Lampsilis) Simpson .. 533 Breviculus (Lampsilis) Call............:-. 533 JsREnAKOLUHLKS (habia) CENN s cocaadadcaasasene 533 Brevidens (Margarita) Lea.............-- 517 Brevidens (Margaron) Lea ..-..-....-.... 517 Brevidens (Truncilla) Lea..............- Be IBrevidenss (Wm10) bearer eases eee 517 IBTeVALOStris) (UNIO) Kuster = seen soseeeeeae 700 Brevis (Anodon) Sowerby.....-.-...----.- 32 Brevis (Pleurobema) Lea.........--2-...- 763 Brevis subelliptica (Pleurobema) Simpson 763 IRSA (Wha) USE saoasdsoesascssoacoases 763 Bridgesii (Anodonta) Lea.......--.-..--- 926 Bridgesiin(Glabaris) Mucameesseeeeeeeeters 26 Bridgesii (Margaron) Lea.......---...... 927 Bridouxi (Brazzea) Bourguignat......-. 907 Bridouxi (Burtonia) Bourguignat......-. 578 Bridouxi (Cameronia) Bourguignat ..... 909 Bridouxi (Moncetia) Bourguignat ...-..-.. 901 Bridouxi (Mutela) Bourguignat........-.. 903 Bridouxi (Unio) Bourguignat.........--. 861 Brimleyi (Unio) S. H. Wright -.........-. 720 Brittsi (Lampsilis) Simpson.........--..-. BBB Broti (PRarreysia) Deshayes =... -2.5.22-2- 847 Brot (Uno) ED eshayesseeneaseseeee seers 847 Browniana (Triquetra) H.and A. Adams. 872 Brownianus (Margarita) Lea............. 871 Brownianus (Margaron) Lea........-:.--- 872 Brownianus (Prisodon) Lea..........-..-. S71 Brownianus (Unio) Lea................-. 871 Brownil (Diplodon) Lea ...........--..--- S76 Brownii (Margaron) Lea .......-..--..--. 876 BLO WAG (Wn1O) UCAS sacle s ee eee eee eee 87 Bruguierianus (Margaron) Lea.......----. 694 Bruguierianus (Unio) Bourguignat ...-.. 694 Brumbyana (Pleurobema) Lea........--. 760 Brumbyanus (Margaron) Lea ....---..--- 760 1004 Brumbyanus (Unio) Lea ..........--.-.-- Brumleyanus (Unio) Lea...--...-.--..--- Buchanensis (Anodonta) Lea........--.. Buchanensis (Margarita) Lea ....--..---. Buchanensis (Margaron) Lea ........-... Buckleyi (Margaron) Lea .......,.....--.- Buckleyi orcutti (Unio) S. H. Wright .... Buckleyi (Unio) Lea ......... 504, 712, 713, Buddianus (Margaron) Lea .......-.---.-- Buddianus) (Unio) Plea saeee see. sees a Bulbosa (Pleurobema) Lea......-...--.-- Bulbosus (Margaron) Lea....--..--------- Bulloosus: (Unio) Muea setae e eet oetepelciee Bullata (Obliquaria) Rafinesque -......-. Bullatus prasinus (Unio) Peetel.....-....- Bullatus schoolecraftensis (Unio) Peetel... Bullatus|(Umio)iConradsees sesso cee BullellagSimpsoneseses secre cer eee eee ee. Bulloides (Diplodon) Lea .........---.--. Bulloides (Margaron) Lea........-------- ‘Bullordes!@Umio) Peas saese eee eee cee Bulloideus Simpson yesecee rae see ee eeee Burkensis (Margaron) Lea...--..-------- Burkensis)(UWmI1O) Mea ees. ccccne asec Burmanus (Parreysia) Blanford...-...... Burmanus (Unio) Blanford ...-...-.--..- Burroughiana (Anodonta) Chenu........ Burroughiana (Anodonta) Lea....--....- Burroughianus (Diplodon) Lea ...--...... Burroughianus (Margarita) Lea....-....- Burroughianus (Margaron) Lea.-.-.....--. Burroughianus (Unio) Lea..............- Bursa-pastoris (Quadrula) B. H. Wright. Bursa-pastoris (Unio) B. H. Wright....--. Burtchianus (Unio) §. H. Wright...-...-.- Burtoni (Grandidieria) Woodward ....... Burtoni insignis (Grandidieria) Bourguig- ITC ae RAD RSE OO SSBB CRS Tors a Sen eeee Burton (Margarom) bea: 2-222 esccos see Burtoni servainiana (Grandidieria) Bour- UND TN eh GN apa ota Sea ae Burtoni servainiana (Unio) von Martens. Burtoni smithi (Unio) von Martens...... Burtoni sturanyi (Grandidieria) yon Mar- Burtoni sturanyi (Unio) von Martens.... Butomig (W010) Smiths seee seen eee: Burtoni (Unio) Woodward ............... Burtonia Bourguignat................2... Buschiana (Monodontina) Conrad....... Buxeusi(largarom)Wweaeeenesessceseceece ISSUE) (haw) UCL cacogaudsaseadcuouuste Buxtoni (Unio) B. H. Wright....:........ Bythinicus (Unio) Kobelt................ IBiyssSanOd Oma aese see eee ee eee ee eas Cacaon (Margao) Wea ees sees sce (CEKGENO), (Whablo))) We) aa ar Gudodaoecbacodcesese Celata (Micromya) Conrad .............. Cela tira ase epee ee etn sen Ns Ase soi Celatus (Margarita) Lea....-............ Celatus (Margaron) Lea ................. Cxlatus (Unio) Comrades sessee eee Cerulea (Nodularia) Lea......-..-.-..-.. Ceeruleus (Margarita) Lea................ INDEX. Page. Page. 760 | Ceeruleus (Margaron) Lea ...............- 811 760 | Ceeruleus (Mycetopus) Heude............ 656 659s Cceruleusi(Umio) sbearsases esse eeeeeeeeee 811 659 | Caffer africana (Nodularia) Lea.......... 825 6595)" Catter (Mare aron)Pleaeenas-aseepeeeaeere 825 713 | Caffer (Nodularia) Krauss......... ...... 824, 825 (ass || Cenawese ((WhoWo)) gM. oecocsasScoososedcc 824, 825 719,857 | Caffer vaalensis (Nodularia) Chaper ..... $25 TSW | CATE TIA STAD SO Meee sees ee eee 82h, 713 | Cahabensis (Quadrula) Lei .-.....-.-...- 782 759 | Cahabensis (Unio) Lea................-.- 782 759 | Caillaudi (Spatha) von Martens.......... 896 709 | Cailliaudii (Anodonta) Lea.........-...- 918 744 | Cailliaudii (Margarita) Lea.............. 812 779 | Cailliaudii (Margaron) Lea ....:.......-. 812, 918 780 | Caipira (Diplodon) yon Ihering.......... 877 779 | Caipira (Unio) von Ihering .............. 877 672 | Calathus (Nodularia) Bourguignat...._.. 82h, 887 | Calathus (Unio) Bourguignat ............ 824 887 | Calceola (Alasmidonta) Lea.............. 667, 668 887 | Calceola (Baphia) H. and A. Adams..... 668 887 | Calceola (Margarita) Lea .........2...... 668 730 | Calceola (Margaritana) Kuster........... 668 730 | Calceola (Margaron) Lea................. 668 845 | Calceolus (Strophitus) Conrad ........... 668 845) 5) Callceolus\(Umio) eden h eee eee 667, 668 926 | Caldwellii (Margaron) Lea.-........2.... 593 832 | Caldwellii (Nephronaias) Lea........ Seis 593 883 | Caldwellii (Unio) Lea.......-............ 593 883 | Calendis (Unio) Rafinesque -...........-. 744 883 | Californiensis (Anodonta) Lea........... 629 883 | Californiensis (Margaron) Lea........... 629 791 | Caliginosus (Margaron) Lea.............. 547 791 | Caliginosus (Unio) Lea................--- 547 715 | Calimatarum (Nephronaias) Morelet..... 596 §28 | Calimatarum (Unio) Morelet............. 596 Calipygos (Anodonta) Kobelt ..........-- 641 828 | Callifera (Anodonta) von Martens ....... 648 828 | Calliscapha Swainson ...................- 902 828 | Callista (Grandidieria) Bourgnignat ..... 829 Callonaia Simpson.........-...... 506, 507, 515, 867 §28 | Callosa (Anodonta) Kuster............... 625 823) ||sCallosusi(@Mfarearon)) ea 2255. ee 701 829 a eCallosusi(Umilo) Nkeayssee aes ease ee 701 | Cambodgensis (Margaron) Lea..........- 838 §28 | Cambodgensis (Monocondylea) Petit.... 838 825 | Cambodgensis (Pseudodon) Petit ........ 838 829 | Cambodiensis (Margaron) Lea ...-....... 831 827,828 | Cambodiensis (Physunio) Lea........._.. 831 577 | Cambodiensis (Unio) Lea .............--- 831 836 | Cambojensis (Pseudodon) Morelet....... 581 708 | Cambojensis (Unio) Sowerby.-..-..------ 581, 819 708 | Camelopardalis (Unio) Sowerby....------ 042 719 | Camelopardilis (Lampsilis) Lea.......... 542 695 | Camelopardilis (Margaron) Lea.-......... 542 501 | Camelopardilis (Unio) Lea...-..-. ye ateare Soak 542 785 | Camelus (Margarita) Lea .........-...... 613 785 | Camelus (Margaron) Lea.......-2:2..--2: 613 525 | Camelus) (Unio) eante ase re ee eeeeeeereee 612 862 | Cameronia Bourgnigmat.2.--.-2-2-2222--- 909 820; ||) Campsianusi(Umio) meatless -eeeee eee 822 526 | Camptodon (Margarita) Lea ...........-- 740 526 | Camptodon (Margaron) Lea ........-.-.- 740 525 | Camptodon (Unio) Say........-.--------- 740 811,812 | Canadensis (Margaron) Lea......-..--.-.- 527 Sills Canadensis (Unio) Muenster seeeeeeeraers 527 INDEX. 1005 Page Page Canefrianus (Lamellidens) Simpson ....- 857 | Castelnaudi (Prisodon) Hupe.....-...-.. 871 CEiaulanieley Si\yehbokiool. obeaacsesoscodesesoce 680,738 | Castelnaudii (Columba) Clessin.........- 915 Capax (Lampsilis) Green.........--....-- 629,530 || Castus) (Margaron) ea..-.2..-.-.2...--- 708 Canara (Marerarom))plieae se sten seer) eral SEO) OBIMDIE) (Wienke) Ibe coodcadaccesseaocdae 708 CEjoaixs (iano) Cinsenl. oooob seosugeerscosose 629 | Cataracta (Anodonta) Say __._........... 630, 631 Caperatus (Dromus) Lea ........-..------ 615 | Cataracta (Unio) Deshayes.............-. 631 Caperatus (Margaron) Lea .............-- 615 | Cataractus (Mytilus) Eaton .............. 6381 Caperatusn(Umio)ed 2225-2 ss2- eee ee eee 615 | Catawbensis (Margaron) Lea ............ 725 Capigliolo bondini (Unio) Peetel ........- 685 | Catawbensis (Unio) Lea..........-....... 725 Capigliolo (Unio)! Kuster: --:2.--2-..------ 6993 nCaitillusi(Umio)s Conrad aeee ns 2222. see. 789 Capigliolo (Unio) Payraudeau ........-.. 685 | Catilus (Unio) B. H. Wright......__...... 789 Cayjonilllarens (Wiakio)) Joey Ssocssoceoudseoosade 522, | Caudatus (Unio) Wagner.............___- 871 Crajauilliltuiss. (Wino) Stir Gocaoccoedoacesedosnue 525 | Caudiculatus (Hyriopsis) von Martens... 581 Capitatus (Cuneopsis) Heude --..-..-:..-- 805m Caudieulatus Sim psoneseene=2ssess ees 581 Capitatus (Unio) Heude.-..--..-.....-.--- 805 | Caudiculatus (Unio) von Martens...-.... 581 Capseeformis (Margarita) Lea ..........--. 524 | Caveata (Quadrula) Heude .............. S01 Capszeformis (Margaron) Lea ....---.---- 6247) Caveatus (Unio), Heude.- 5... 2-2... 801 Capseeformis (Truncilla) Lea...-......-.- 524 | Cellensis (Anodonta) C. Pfeiffer ......_.. 622 Capseeformis (Unio) Lea-....-------.----- 524 | Cellensis (Anodonta) Kobelt............. 640 Carbonarius (Margarita) Lea..-.......... 701 | Cellensis beringiana (Anodonta) Schréter 628 Carbonarius semigranosus (Unio) Peetel.. 702 | Celtiformis (Cuneopsis) Heude........... S05 Carbonarivsi(Umi0) eas. s---22-2-oe eee 701 | Celtiformis (Unio) Heude____-_.......... 804, 805 Cardiacea (Unio) Deshayes ____....------ 789 | Cerina (Quadrula) Conrad ............... 787 Cardiacea (Unio) Guerin............--.-- (90m | ECexrinuws: (Unio) \Conradiess=eeeeease eee 787 Cardium occidens (Unio) Peetel .-......-- 527 | Chaiziana (Anodonta) Rang ............- 896 Cardiumy (Unio) KConnadea- 222-2 e se 527 | Chaiziana (Margarita) Lea............... 897 Cardium ventricosus (Unio) Peetel ....--. 527 | Chaiziana (Margaron) Lea......__....... 897 Carinata (Anodonta) Dunker ......__-_-- 933 | Chaiziana (Spatha) H.and A. Adams ____ 897 Carinaital (Miya) pMatomeees sea cceee a scecrel= 539 | Chaiziana (Spatha) Rang .=............- 896 Carinata (Solenaia) Heude_____..-...---- 657 | Chalcoensis( Anodonta) Crosse and Fiseher 63 Carinatus (Mycetopus) Heude .__--..___- 657 | Chambardia Bourguignat................ 902 Carimaius@Wnio) Barnes ye haa see ee 539 | Chamberlainia Simpson...... 505, 506, 511, 514, 582 Carinifera (Anodonta) Conrad......_-_-- 588 | Chantrei (Anodonta) Bourguignat....... 648 Carinifera (Pilsbryoconcha) Conrad .___- 588 | Chantrei (Leguminaia) Locard .......... 651, 653 Carinifera (Unio) Lamarck .............. 721 | Chantrei (Monocondylea) Petel......... 651 Carinthiacus (Unio) Rossmiissler.......-. 698 | Chantrei (Pseudodon) Locard............ 653 Cariosa (Anodonta) Kuster ......-......- 6258 Chantril (Unio) wocandae ss as ae 689 Cariosa (Lampsilis) Stimpson ___________- 529 | Chapalensis (Anodonta) Crosse and Caniosay (Miya) ebatomieesesece se eceeee eee 529 THUS CIO Titsy ater ascren cease ee tac pics SU 2 aE Cay oe 6320 Cariosay (Unio) plamanrck es eee pees. 671 | Chaperi (Pseudodon) de Morgan......... S38 Cariosusi(Wamipsilis) Say .--.222---------. 28 | Chaperi (Pseudodus) de Morgan ____..... 838 Cariosus (Margarita) Lea--...--..-------- 529 | Charbonnieri (Brazzeea) Bourguignat.... 907 Cariosus' (Margaron), Lea:.....----------- 529 | Charbonnieri (Cameronia) Bourguignat - 909 Carilosusi (WMO)! Saye ase eee eect 528 | Charbonnieri (Unio) Bourguignat ______. 821 Carneusi(Umio)-Kousterisa-s-eeh een soe 696 | Charlottensis (Margaron) Lea-....--...---. 663 Carolinensis (Castalia) Sowerby...-.------ 864 | Charlottensis (Symphynota) Lea____.____ 663 Carolinensis (Unio) Bose.-...--...-------- 741 | Charlottensis (Unio) Lea................. 663 Carthagena (Anodonta).....-.-.-.------- 922 | Charpentieri (Anodonta) Kuster...._.... 625 Carunculina Simpsons s=.2seessseee eee 563 | Charruana (Unio) d’Orbigny....--....--. 876 Casablancee (Margaron) Lea ..-..--...--- 882 | Charruanus (Diplodon) d’Orbigny....-.- S76 Caseeblanese (Diplodon) Philippi---.....-- 882 || Charruanus (Margarita) Lea .......---..- 876 Caszeblanez (Unio) Philippi -__....-..-.. 882 | Charruanus (Margaron) Lea ...--.-..-..--. 877 Cagiabla IDAs = coccoucachosecneode sods 863 | Chathamensis (Margaron) Lea..-...-.--. 727 Castaliellar Simpson ae ssa eee eae 866 | Chathamensis (Unio) Lea .........-.-..-.. 727 Castalina yon Ihering.... 506, 515, 865, 866, 867,869 | Chattanoogaensis (Margaron) Lea...-..-.- 753 Castanea (Anodon) Heude.._._._-.-....-. 688 | Chattanoogaensis (Pleurobema) Lea-..... 753 Castanea (Obovaria) Lea.__-_....-.--.--- 602 | Chattanoogaensis (Unio) Lea .....-.----. 753 Castaneus (Margarita) Lea..-..-...-.-.-. 602 | Cheeziana (Anodon) Sowerby...---.--.--- 932 Castameus (Margaron)) lea ---.22-.2-2---- 602 | Chelidonura Rochebrune........-..-..-.- 906 Castaneus (Obovyaria) Lea.-.........----- COME NChelidonopsistAmceyes 5 eee eae o 506, 515, 90 Castaneuss (Wii o) ieee eae eee eee 602 | Chickasawhensis (Margaron) Lea....-.... 785 Castaneus (Unio) Rafinesque-.....--..--.- 744 | Chickasawhensis (Quadrula) Lea....-.... 785 Castelnaudi (Anodon) Sowerby...--.---- 915 | Chickasawhensis (Unio) Lea.....-....-.- 785 Castelnaudi (Anodonta) Hupé.....---.-. 928 | Childreni (Diplodon) Gray....--.....-..- $33 Castelnaudi (Hyria) Hupé .....-..---.... 871 | Childreni (Margarita) Lea ..-...-.-.--..-.- 883 Castelnaudi (Leila) Hupé .......-.----... 915 | Childreni (Margaron) Lea...........--.. 883 1006 INDEX. Page. Page. Childreni (Unio) Grays sees ecee 883 | Coarctata (Anodonta) Potiez and Mi- Childreni (Unio) Hanley-........---.-.-. 534 OE HUKG ASBMB CAS SR Homa pees See ee 623 Chilensis (Diplodon) Gray ...........---- 880 | Coarctata (Unio) Lamarck ...-...-....... 721 Chilensis (Unio) Gray....-...-...-..----- 880 | Coccinea paupercula (Quadrula) Simpson. 789 Chiloénsis (Diplodon) Kuster ....-.....-- 882 | Coccinea (Quadrula) Conrad........-.--- 788 Chiloénsis (Unio) Kuster.........--.----- 882 | Coccineus (Margarita) Lea............-... 789 Chinensis (Anodonta) Kuster.....-...--- 833 | Coccineus (Margaron) Lea..-...-.....-... 789 Chinensis (Anodonta) Peetel ......-.-.--- 648 | Coccineus (Unio) Conrad ................ 7388 Chinensis leevis (Parreysia) Heude.....-. 850 | Cochlearis (Anodon) Sowerby....--.----- 648 Chinensis (Margaron) Lea ......--------- 850 | Cocoduensis (Unio) Reeve ............--- 547 Chinensis (Parreysia) Lea.......-.-.-.--- 8500) Coelestisi@imicdina) Wears sesese sere ee eee 905 Chinensis squammosus (Parreysia) Coelestisi(Platinis)leateeees-eseeeeeee eee 905 ICU CO Raespect eae a teens ne eels Bishi Ne 850 | Cognata (Anodon) Gould ................ 628, 629 ClainerAeS (WiMko)) Ibs Ssocsoecsaousceodas 850 | Cognata (Plagiola) Lea ......-........... 606 - Chiniana (Anodon) Heude...........---- 639 | Cognatus (Margaron) Lea...-- Mea ose 606 Chiquetana (Anodon) d’Orbigny .-.....-. 928) |) | Cognatus) (Unio) Wealleetereeees=eeeeeeeee 604, 606 Chiloreusi(Wmio)Heude yee sae see 808 | Colchaguensis (Unio) Philippi ........... 882 Chloris (Unio) Rafinesque........-..-.--- 744 | Colletopterum Bourguignat...... 506, 518, 514, 649 Chunit(Margaron)\Wealssss ss. se- soe 787 | Collina (Alasmidonta) Conrad........... 669 Chumiil(Q@uadrulla)Mbeatssssecesese oo ees 787 | Collinus (Margaron) Lea................. 669 Chunilig@Winio) pW eaereseeoseeee eee ee ee 78%, | Collimusi (Unio) (Conradieas-esseeeeeeeeee 669 Churchillianus (Unio) Bourguignat...... 650 | Coloradoensis (Lampsilis) Lea ........... 568 Churchillianus (Unio) Sowerby...-.-.-.--- 650 | Coloradoensis (Margaron) Lea........... 568 Cicatricosa (Pleurobema) Say.....-----.- 765 | Coloradoensis (Unio) Lea ................ 568 CriGHInACOSwS (MUiaO)) Shy gsescoccugdasonace 765 | Coloratus (Unio) Charpentier.........._. 700 Cicatricosus yaricosus (Unio) Peetel....-. sey || Chollwhan) ob) IVES senodacccmoudesoosocaceeoses » 914 Ciconia (Anodon) Sowerby..:....--.----- 926 | Columbensis (Margaritana) Lea ......... 673 Ciconia (Anodonta) Gould.....____.-.--- 924,926 | Columbensis (Margaron) Lea ............ 741 Cicuri(Margaron))Weasees=seeeesa ee eeee 742 | Columbensis (Unio) lea... 2222-2525 2a Vga Oheuiy (Uiatto)) 1H scoouoowoooscoscudedoede 742 | Columbiensis (Unio) Peetel......2........ TAL Cilicia (Anodonta) Kobelt !._._........-. 627 | Compactus (Margaron) Lea.............. 518 Cincinnatiensis (Margaron) Lea ......... SOB MCompacrusy (Um o) ears sees 518 Cincinnatiensis (Unio) Lea............-.. 523 | Complanaria Swaimson....-....-....-2--- 662 Cinerescens (Toxolasma) Rafinesque ..-. 744 | Complanata (Alasmodonta) Barnes...... 665 Cinnamomicus (Margaron) Lea..-....... 758 | Complanata (Anodonta) Rossmiissler .... 625, 626 Cinnamomicus (Unio) Lea ............... 758 | Complanata (Baphia) H.and A. Adams... 666 Circulus) (Margarita) leas. 235-2 ssc e ee 600 | Complanata (Cameronia) Bourguignat .. 910 Circullus|(Margaron)Meeascane eee eeeeee 600 | Complanata (Complanaria) Conrad....-. 666 Circulus (Obovaria) Lea.........2......-. 600 | Complanata (Hyria) Hupé............... 870 Circulus (Unio) Lea ..-.....--...--.-. 599,600,601 | Complanata Katherine (Symphynota) Lea 666 Cixcumacthusi(Unio)Weadeeesasee se ceeset 750 | Complanata (Margarita) Lea............. 666 Cirratus); (Unio) bea aes see eee eee eee eee 725 | Complanata (Margaritana) Calkins ...... 666 Cistelliformis (Margaron) Lea............ 716 | Complanata (Margaritana) Westerlund.. 677 Cistelliformis (Unio) Lea..............-.. 716 | Complanata (Mutelina) Jousseaume ..... 900 Claibornensis (Lampsilis) Lea............ 537 | Complanata (Mya) Dillwyn.............. 720 Claibornensis (Margarita) Lea ........_.. 537 | Complanata (Mya) Eaton ................ 665 Claibornensis (Margaron) Lea ........... 537 | Complanata (Spatha) Jousseaume........ 900 Claibornien'sis! (Umi) Wearsesseceseneeeee 537 | Complanata (Symphynota) Barnes...._.. 665 Clappertoni (Anodonta) Koenig.......... 896 | Complanata (Unio) Hanley .............. 666 Clarkianus (Lampsilis) Lea ...........-.. 532 | Complanatus jejunus (Unio) Lea ........ 795 Clarkianus (Margaron) Lea -............. 532 | Complanatus (Margarita) Lea...........- 721 Clanlilamnss((Wmio) Mea was hee ae ea 532 | Complanatus (Margaron) Lea............ 721 Clava (Pleurobema) Lamarck.... 509,510,745,746 | Complanatus (Prisodon) Hupé........... S70 Clava (Unio) slam ar cles ee eer ee 745 | Complanatus quadrilaterus (Unio) Lea .. 725 Clayus|(Marcaritay eealsasss estan e 746 | Complanatus (Unio) Dillwyn .... 677, 720, 725, 728 Clawuis7 (Mansanom)) Mee ayesaseecassceae eee 746 | Complanatus (Unio) Middendorff........ 677 CllenAbls)(Wiigelo)) IR@EWE as eocaosadadoousccade 746 | Compressa (Alasmodonta) Menke........ 65 Clessini (Glabaris) Fischer -......-.-..... 930,932 | Compressa (Anodonta) Menke ........... 626 Clessini (Mycetopus) Fischer.........-... 930 | Compressa (Complanaria) Conrad .....-- 662 Cliffordiana (Obliquaria) Rafinesque ....- 744 | Compressa (Margaron) Lea.............-- 588 Clinchensis (Margaron) Lea ......-...... 748 | Compressa (Microcondylea) Petel.....-. 662 Clinchensis;(Winio) bea seers eee ae 748 | Compressa (Monocondylea) Lea......... 588 Clintonensis (Ptychobranchus) Simpson. 6138 | Compressa plebia (Symphynota) C. B. Cliome:Gistelesasseaisecen oe saeco eee 583 AGES ree Bee eee eee eee eee 663 Coarctata (Anodonta) Anton.......:...--. 630 | Compressa (Pseudodon) Conrad ......-.- 588 Compressa (Spatha) Peetel ......-...---- Compressa (Spatha) von Martens ....... Compressa (Symphynota) Lea........--- Compressissimus (Margaron) Lea...-...- Compressissimus (Unio) Lea .....-....-- Compressus (Margarita) Lea ..........-- Compressus (Unio) Conrad...........--- Compressus (Unio) Heude......-...-.-.-- Comptus (Unio) Deshayes and Jullien... Conasaugensis (Pleurobema) Lea...-.-- Conasaugeensis (Unio) Lea.........--.-- Concavus (Margaron) Lea......-...--..- ChomG@anls ((WiovIO)) WEE Shao aseseuconseebos Concestator (Lampsilis) Lea ...-....---- Concestator (Margaron) Lea........---. @oncestator (Unio) Wear. 23.2225... -- Conecolor (Margaron) Lea ........-----... Coimeoloe (Whale) Ie Seesancoqceuneeueaes Confertus (Margarita) Lea ............-- Confertus (Margaron) Lea ......-...---- (CommiSimrisiss ((WiavIO)) 6 sooeosoasedoogeoaboadse Conferiush(Umio)) Wea eee er eee ence Confragosa (Alasmodonta) Say ...-.-.--- Confragosa (Baphia) H.and A. Adams... Confragosa (Margarita) Lea........----- Confragosa (Margaritana) Calkins.....-. Confragosa (Margaron) Lea........----- Confragosa (Unio) Deshayes.......--.-- Confragosus (Arcidens) Say.....--..---- Confusa (Anodon) Heude..........-..-- Congareeus (Margarita) Lea......--..---. Congareeus (Margaron) Lea..........--- @ongareeusi(Wmio)) Wears. seen ton oma Conjugans (Tritogonia) B. H. Wright .... Conjugans (Unio) B. H. Wright ...-....- Conjungens (Arconaia) Heude......-.-- Connasaugeensis (Margaritana) Lea..... Connasaugeensis (Margaron) Lea ....--- Connasaugensis (Strophitus) Lea......- Connasaughensis (Unio) Sowerby-....--- Connesaugensis (Margaritana) Clessin-. Conradianus (Margaron) Lea ........-.-- Conradianus (Unio) Lea .....--.-......- Conradicus (Margarita) Lea.........-... Conradicus (Margaron) Lea............. Conradicus (Medionidus) Lea ......--.-. Conradicus (Unio) Conrad -............- @onradicus; (Unio) Weare 2e 2s. 25 25 - Consanguineus (Margaron) Lea......-.. Consanguineus (Unio) Lea..-.........-. Consentaneus (Unio) Rossmiissler ....-- Consobrinus (Lamellidens) Lea.....-... Consobrinus (Unio) Hanley and Theobald Consoprimiucy CWmio) wea sss serene Conspicuusi(Unio) Wea ses sees aee Constrictus (Lampsilis) Conrad ...--..-. Constrictus (Margaron) Lea.........--.. Constrictus (Unio) Conrad ..........-.-- Contiguus (Margaron) Lea..........:.-- Contiguusi (Unio) sWearesasesssecee eee Contorta (Burtonia) Bourguignat....... Contorta (Hyria) Sowerby -...-..-.---.-- Contorta (Margaron) Lea ........-....-- Contortay(Eiriquetra) Moca ses eee se 4-1 Contortus conjungens (Unio) Heude.... INDEX. 1007 Page. bage. 588 | Contortus muticus (Unio) Heude......... 860 8408) Contortus (Unio) Heude-2:-22-5.-.-.-..- 860 662 | Contractus (Margaron) Lea...._......... 722 618 | Contractus (Unio) Lea -.................. 722 613 | Contradens (Margarita) Lea.............. 817 663 | Contradens (Margaron) Lea..........._-- 817 662 | Contradens (Nodularia) Lea -............ 817 851 | Contradens (Unio) Lea................... 817 858 | Contrarius (Unio) Conrad................ 537, 733 763 | Contrarius (Lampsilis) Conrad........... 537 163))\(Contritus (Unio) Heudessaa-2.2. 22-225. 801 ool) | Conus) (Unio) Spenglerisnsse- esse sss e- 682, 744 561 | Cooperiana (Quadrula) Lea ............-- 781 548 | Cooperianus (Margarita) Lea ............. 781 548 | Cooperianus (Margaron) Lea..........-.. 781 5489) Cooperianus;(Umio) eases =22 5) se see. 781 760), Copei- (Marngaron)) ears2 222.228 aes 549 AID), Cloyne (CUsmmo)) WEBS sc caSo ose odoucacdaeuune 549 Tals Clove (Mite neeee oii) Ib eb CoS SO ete aeseondns 755 (als) 4} Clore (ilenyee inoue) Isr Coase coodooasbooodsae 759 (Ge Cor@bleurobema,) (Comrade. ere eeeeeee 15h Us|) Clone (Whaley) ClomievGl oe eae uacdocoococouos 74 661, 662 | Corbeti (Unio) Deschamps ..-............ 856 662 | Corbicula (Grandidieria) Bourguignat... 829 Cys || “ClordoKonlioks - 3 es edsceeoeseueeoussasoccs 828 662 | Corbis (Margaron) Lea.................-- 845 662 | Corbis (Parreysia) Hanley ............... 8h5 6628 aiCorbis) (Umio)) Hanileysens-neeeoeeeeeeeeeee 845 662 | Cordata (Castalia) H. and A. Adams. .__- 864 639 | Cordata (Obovaria) Rafinesque .........- 602 109% | Cordatusi(Unio)Conradaaea--eeeeeeeeeee 788 OOM NCoxrderiig@Umio) mEleudeeenseeeeeeeeeeee ne 805 709 | Coreana (Quadrula) von Martens........ 797 609 | Coreanus (Unio) von Martens....-.--_.-- 797 609 | Coriaceus (Diplodon) Dunker...........- 883 860) ;Coriaceus (Unio) Dunkers 22s eee eee = 883 CLS Corvamy (Wm10) PREC Viewemarseaeeee rer eaee 702 618 | Cornea (Anodonta) Philippi -..........-.-. 648 618 | Corneola (Spatha) Rochebrune .....-..-- 902 GISS i MConneusy (Unio) eatessesere sere eee ere 725 GISH |e Corniuitay (Miya) sMatomle ease see eee ee 611 589 | Cornuta (Theliderma) Swainson.......-.- 611 589 | Cornutus (Margarita) Lea.-.............- 611 589 | Cornutus (Margaron) Lea .....-..--...--- 611 589e Cornutus (Unio) eBarnesteece- sje seee cece 504, 611 689 | Cornuum-lune cinnamonicus (Quadrula) 589 FV CUM G2 ee ae Sale e ee em echyae) separa S02 589 | Cornuum-lune (Quadrula) Heude....... 802 752 | Cornuum-lune (Unio) Heude.-..--....--. 802 752 | Corpulenta (Anodonta) Cooper ...-.-.-.- 616 698 | Corpulenta (Margaron) Lea.......-...--- 646 856 | Correyana (Margaritana) Peetel.......-... 661 856 | Corrianus (Lamellidens) Lea..........-.- 857 856 | Corrianus (Margarita) Lea .-........-..-- 857 536 | Corrianus (Margaron) Lea ..............- 857 Som ee COLLANUS (Wim) PKU Ste Tyee) eset ier ere 811 55 Corrianus) (Wmio) eas secs) metic a-acaai= 857 551 | Corrianus (Unio) Sowerby ..--- Sanne 855 548 | Corrientesensis (Margarita) Lea......-...-. 912 548 | Corrientesensis (Margaron) Lea.-.-......-. 912 578 | Corrientesensis (Monocondylea) d’Or- 860 lhea hyecue nee nnennnecsesea Gam Hae Onea Nees 912 860 | Corrugata (Alasmodon) De Kay .....--.- 671 860 | Corrugata (Hyria) Lamarck.............- 868 860 | Corrugata leevirostris (Parreysia) Benson. 842 1008 INDEX. Page. Page. Corrugata (Margaron) Lea ....-.........- 841,869 | Crassus (Margarita) Lea...............-.. 539 Cornugatan (Miya) eMiuilllleree eer ee cect 841 | Crassus (Margaron) Lea..........--..---- 678 Corrugata nagpoorensis (Parreysia) Lea. 842 | Crassus (Pseudodon) Drouet ............-. 834 Corrugata (Parreysia) Muller ............ 8h || Crassus) (Unio) Barnes) -2--25-+-54-5222-6< 767 . Corrugata (Spatha) Dautzenberg......... 902 | Crassus (Unio) Conrad ........-.:..--.-.- 540 Corrugata (Triquetra) H. and A. Adams . 869) || Crassus (Unio) kustersss= seep eee eee 536 Corrugata (Unio) Blainville..........-.... 863)" Crassusi(Umio)sNilSsoneeeee see eeee eee ee 697 Corrugata (Unio) Lamarck...:........... eytil) || Ore) (LWP avl@)) INSOAKS sososcccocanaessacec 692 Corrugata (Unio) Manduyt .............. 698° || (Crassus) (Umio) Retziuse 22 esses eane 677 Corrugatus levirostris (Unio) Hanley and Crassus (Unio) Say ...............--. SOUS 539 GUNG OONG .ocedocance A a SE i Sone 842 | Crassus (Unio) Sowerby...-...........---- 540, 707 Corrugatus (Margarita) Lea ..........-... 841 | Craviovensis (Psilunio) --...-..-........- 510 Corrugatus nagpoorensis (Unio) Hanley Crebristriata (Margaron) Lea .........--- 835 awavGl INCE!) S4souabedcoodsooedubabsos 842 | Crebristriata (Monocondylea) Anthony . 835 Corrugatus (Unio) Retzius ........----.-- 691 | Crebristriata (Trigonodon) Conrad....... 835 Cormminowiblinas sao 5bsceasadsccosoecasoasacr 563 | Crebristriatus peguensis (Pseudodon) Coruscus fryanus (Unio) B. H. Wright -.- 71h, AMtHONY. 002k nkeeh soe see eos eee ee eee 835 Coruscus (Margaron) Lea .........---...- 714 | Crebristriatus (Pseudodon) Anthony..... 835 Conuscusi(Umio) Gould ees -sees-ee =e eee 714 | Crebristriatus (Unio) Sowerby ........... 835 Corvinus (Margaron) Lea.........-.--.-. 566 | Crebrivittatus (Margaron) Lea.........-- 753 Convinuse (Umi) MLCaee espe cee see eas ee= 566 | Crebrivittatus (Unio) Lea .-..........--.- 753 - Corvuneulus (Lampsilis) Lea......-.---.-. 566 (Crenodontasehiluitenmeesesseeeesscreeeree 766 Corvunculus (Margaron) Lea ........-..-. 566 | Crepera (Anodonta) Lea ...-..-....------ 833 Corvunculus (Unio) Lea....-.-..........- 566) || Crepers (Dallliella) ea) a2 eases 833 Corvus (Margarom) Lea. ..5...23..2-2------ 708 | Crepera (Margaron) Lea ...........-....- 833 Coxnvusi@Umio) bea sseee resets eeeeeee cee 708 | Creperus (Margarita) Lea...........---.. 552 Costata (Alasmidonta) Rafinesque. ...... 664 | Creperus (Margaron) Lea ................ 552 Costata (Alasmodonta) Say-....--..-.----. 6654 Creperush (Unio) sled easeersesee see eeeeeee 552 Costata (Amblema) Rafinesque .......... 744) ‘Cresserus) (Unio) Hanley 22222 s2sss2-cere 52 Costata (Complanaria) Conrad........... 665 | Crispa (Anodonta) Lamarck ............. 919 Costata (Symphynota) Rafinesque --..-.. 665 | Crispata (Alasmodonta) Mousson ........ 836 Costatus (Plectomerus) Conrad........... 769 | Crispata (Anodonta) Lamarck ....-...... 919 Costatus) (Unio) iSaiyeseeeas seeeeesanraeee 769 | Crispata (Anodontites) Bruguiere.......- 919 Costulata (Margaron) Lea..... EGE See 912 | Crispata (Margarita) Lea............--..- 919 Costulata (Monocondyleea) Moricand .... 912 | Crispata (Margaritana) Peetel ............ 836 Couchilanas(@uadrula)ibeaseeasss nee rial Crispata. (Marga ron) Micas=—e er eeeeeeeeeee 919 Couchianus (Margaron) Lea ..-.....--... 777 | Crispata (Nodularia) Gould .......-.....- 815 Couchianuss(Umio)plWea eee see sees ee Tito Crispatan (Unio) (Gouldes-=eeeseee eee 815 Coulboisi (Brazzeea) Bourguignat ........ 907 | Crispatus (Glabaris) Bruguiere .......... 919 Coulboisi (Cameronia) Bourguignat...... 909 | Crispatus (Margaron) Lea...........----- 815 Coulboisi (Unio) Bourguignat..---.....-. 821 | Crispisulecata (Nodularia) Benson-....-... 820 Couperiana (Anodonta) Lea..:..........- 636 | Crispisulcatus (Margaron) Lea........-.- 820 Couperiana (Margarita) Lea.............. 636 | Crispisulcatus (Unio) Benson .......-.--. 508, 820 Couperiana (Margaron) Lea.............. 636 | Cristaria Schumacher ...-..... 505, 506, 514, 578, 583 Courquinianus (Unio) Bourguignat...... 686 | Crocatus (Margaron) Lea................- 5381 Crapulus (Margaron) Lea ....-.....-.2... 75 5umOrocatus) (Unio) Please eeseeee eee eeeae 5381 Cig omUhorss:(C\Usmloy): bye, See se Ae eee eee 755 | Crocodilarum (Unio) Morelet............ 702 @rassan(Dalliella)eDrowete sees seems 83), | Cromwellii (Margaron) Lea... -.--225222- 566 Crassay (Gibbosmla)sWioodse2 sates so, | Cromwellii (Lampsilis) Lea .....-.......- 565 @rassaa(Marsaritay pea eean= ss -e eee O17, | Cromwelliii(Unio)slearsa= see eeseeeeeee 565 Crassa (Margaritana) Retzius..........-. 513,677 | Crosseana (Castalia) Hidalgo..........2-. 865 Crassac(Marearom) Weaens--cs2 eee eeeee: 917 | Crosseanus (Tetraplodon) Hidalgo ....... 865 Crassan diya) ebacOnyaeeeeeeeeeee eee eer 539 | Crossei (Physunio) Deshayes and Jullien 831 @ratssai (Miya) WiOOdee ne mee a etennann 804 | Crossei (Unio) Deshayes and Jullien....- 831 Crassidens (Margarita) Lea_......-....... 707 || Cruda (Pleurobema)) Weal eee ae 751 Crassidens (Margaron) Lea.............-- 707, a Grudus (Unio) Wear sates eee eee 71 Crassidens (Unio) Lamarck... 503,504,700, 706,709 | Cryptoradiata (Spatha) Putzeys........-- 900 Crassidens (Unio) Sowerby.-.-----..--...- 539 | Cylindricus (Margaron) Say.....---..--.. 773 Crassidens var. a (Plectomerus) Conrad... 772, | Ctenodesma Simpson....-....---2---- 906, 515, 852 Crassidens var. a (Unio) Lamarck........ 772) Cucumeriay Conradissssseeeseeeeee eee eee 893 Crassissimus (Margarita) Lea.....-......- » 676 | Cucumoides (Margaron) Lea.........-..- 893 Crassissimus (Unio) Hanley.............- 6785) Cucumoidesi@Umio) Slicaeeesses rene aeseee 893 CrassitestaiSimpsoneeseeeeeeeseer eee ncse 686 | Cultelliformis (Diplodon) Conrad..-...-.- 892 Crassus (Anodon) Swainson....--....-..- 917 | Cultelliformis (Unio) Conrad ....-.-...... 892 Crassus batavus (Unio) Jordan........... 697 | Cultrata (Anodonta) Gould ......-..-..-- 644 Crassus (Glabaris) Swainson .......-.-.--- 917 | Cumberlandianus (Margarita) Lea...--.. 553 INDEX. 1009 Page. Page. Cumberlandianus (Margaron) Lea....... 553 | Cylindracea (Margaron) Lea........... 920 Cumberlandicus (Margaron) Lea ........ 554 | Cylindrellus (Lampsilis) Lea .......... 565 Cumberlandicus (Unio) Lea ............-. 509,553 | Cylindrellus (Margaron) Lea .......... 565 Cumingianus (Unio) Dunker ....-......- 893 | Cylindrellus (Unio) Lea...............- 565 Cumingii (Anodonta) Lea....-.-...-..--. 837 | Cylindrica (Mya) Eaton ............... 773 Cumingii (Hyriopsis) Lea.......-..-..... 679 | Cylindrica (Quadrula) Say............. 773 Cumingii (Margaron) Lea..............-. BE EB || Ohdbbovoboesy Shhaay oon SEC Bs coon eeeesanuoe 807 Cumingii (Microcondylea) Clessin ....-. 837 | Cylindricus (Margarita) Say ........... 773 Cumingii (Monocondylea) Lea ........-- 837 | Cylindricus (Orthonymus) Agassiz....- 773 Cumingii (Pseudodon) Lea..........-..-. S37 Cylindricusi(Umio) "Say mee see sae 773 Cumingii (Pseudodus) de Morgan.......- 837 | Cyphia (Obliquaria) Rafinesque........ 744 Cummimeapin(Umi0) Weasesans aes sees cee OSM Cy phian (Unio) Conradeey: pees ae 764 Cuneaitas (Miya) Haltom crencceeecse eee 707 | Cyphias cesopus (Unio) Peetel .......... 764 Cuneata (Pleurobema) Rafinesque.....-- Tes) ||, Chyolanivis} (pow) Sey Goes sboskessacuoosca 764 Cuneatus (Unio) Barnes.................- 707 | Cyprogenia Agassiz .............- 506, 510, 514, 609 Cuneatus (Unio) Rossmassler ..-...-.-..-- 692 | Cyrenoides (Margaron) Lea...........- 606 Cumeasush(Umio)!Saviescesceseccene scene 746 | Cyrenoides (Plagiola) Philippi.......-. 606 Cuneatus (Unio) Swainson............-.-- 517 | Cyrenoides (Unio) Philippi ............ 606 Cuneolus (Margaron) Lea .......-...-.-.-- 748 | Cyrenopsis (Grandidieria) Bourgingnat.. 828 Cuneolus (Pleurobema) Lea.............- 748 | Dactylinus (Unio) Heude.............. 808 Cuneolusi (Unio) eae sses-e- ee neee ese 748 | Dactylus (Anodon) Sowerby ........... 929 Cuneopsis Simpson.........--.--- 506, 509, 514,804 | Dactylus (Margaron) Lea ................ 553,929 Cuneus (Quadrula) Conrad ....--...--..- 792 || Dactylus) (Unio) Lea ...--:-..--.-..-.--- 553 Cumensn(Wimio) AC ailleeeaasens acerca 789 | Dactylus (Unio) Morelet............... 683 Cunninghami (Unio) B. H. Wright --..-. 714. | Dahomeyensis (Anodonta) Lea ......-- 900 Cuprea (Obliquaria) Rafinesque......--.. 744 | Dahomeyensis (Margaron) Lea ........ 900 Cuprinus (Diplodon) Simpson __..__-...- 883 | Dahomeyensis (Spatha) Lea ........_.. 900 Cuprinus (Margarita) Lea......--..-.-.-- 573 | Dahuricus (Margaritana) Kobelt....... 676 Cuprinus (Margaron) Lea.....--...---.-.- 573 | Dahuricus (Unio) Middendorff.....-... 676 Cuprinwsn(Umio)Weaeeee ss-ee eee asco ne 572 | Dalei (Anodonta) Buffon .............. 648 Curatus (Margaron) Lea ...............-. 728 | Dallasiana (Anodonta) Lea ...........- 647 Curatuss (Unio) Wea Bese acess ciasceea ace 727 | Dallasiana (Margaron) Lea ...--....... 647 Curreyana (Baphia) H. and A. Adams... 661 | Dalli (Unio) B.H. Wright ........-..... 713 Curreyana (Margaritana) Lea........-.-. 661 | Dalliella Simpson ...............- 506, 515, 832, $84 Curreyana (Margaron) Lea ...-.-.-....-- GolG eDamalisHteach rrseeeee sae reece eee 674 Curreyana (Micromya) IAS ASSI Zee 661 | Damascensis (Margaron) Lea .......-.. 695 Curreyana (Strophitus) Conrad........-. 661 | Damascensis (Unio) Lea ....-...---.... 694 Curreyana (Unio) Sowerby .....-..-....- 661 | Damnoica (Unio) d’Orbigny ....-...... 894 Curta (Pleurobema) Lea .........--.....- 753,754 | Danielis (Unio) Gassies .......--.---.-- 684 Curtus (Margaron) Lea .................. 754 | Daniellii (Unio) Villa..-...........--.- 891 (CAMERAS) (Wowk) IGE coouddeaccoeseo Gobuaese 754 | Danielsii (Anodonta) Lea....-....-...- 645 Curvatus (Anodonta) Jay ....-..-..---..- 648 | Danielsii (Margaritana) Peete] -.......- 645 Curvatusi (Unio) Pea tesececeeeec cee 724 | Danielsii (Margaron) Lea...--......--- 645 Cuspidatus (Unio) Lea........-- Cee 728 | Danielsii (Unio) B.H. Wright .......... 708 Cuvierianus (Margaron) Lea........--.-- 727 | Dariensis (Anodonta) Lea........----.- 63h, Cuvierianus (Unio) Lea.................- 727 | Dariensis (Margaron) Lea.......--.--.- 634, 710 Cyanus (Unio) ePhilippileses- nse eeee 861 | Dariensis (Unio)) beat. 4222-2 2 a 710 Cyclips (Toxolasma) Rafinesque.......-- 744 | Datus (Margaron) Lea ......-...--.--.- 728 Cyclips (Unio) Ferussac.........-.-.--..- 540M i Datusy(Umilo) sbeaess-seeese es teeaeserem 728 Cy clomya;Simpsoneeeseccs sees seces 578, 885, 886 | Dautzenbergi (Nodularia) L. Morlet...- 819 Cygnea anatina (Anodonta) Linnzus.... 625 | Dautzenbergi (Unio) L. Morlet.-......-- 819 Cygnea (Anodonta) Linneus ............ IIB} (20) || JOE Wyableul (hsb) Sosacqsobosoeuauseceesoce 510 621, 626, 627,631,649 | Decampsiana (Nodularia) Wattebled .. 822 Cygnea (Anodonta) Rossmissler.......-- 625 | Decampsianus (Unio) Wattebled....... 822 Cygnea cellensis (Anodonta)......-.-.-.-- 621 | Decisa (Pleurobema) Lea .......-..--.. 752 Cygmeai (Margarita) hea. Jn eneeee ee 622 | Decisus (Margarita) Lea ......-.-.--.-. 752 Cygnea (Margaron) Lea......---........- 622 | Decisus (Margaron) Lea....-...-....-.. 752 Cygnea ponderosa (Anodonta) C. Pfieffer. 626 | Decisus (Unio) Kuster........-.-------: 748 Cygnea rostrata (Anodonta) Rossmissler. 627 a Wecisus) (Unto) pbeae yaaa secs 752 Cygnea (Symphynota) Lea .............. 622 | Declivis (Anodonta) Conrad ..........-. 643 Cygneus (Anodontes) Cuvier .....--....- 621 | Declivis (Margarita) Lea.......-...-..- 643, 741 Cygneus (Mytilus) Linneeus ....-.-..-..-- 620,621 | Declivis (Margaron) Lea.........-..-.. TAL Cygnoea (Anodonta) Gassies ............- 622 | Declivis (Unio) Conrad ........-..--.-- 742 Cylindracea (Anodonta) Lea........-.... 920ml SD eclivasi@Wm10) tSaiva eer ners seine aerial) 740 Cylindracea (Glabaris) Lea .............. 920 | Decora (Anodonta) Lea........-..----- 643 Cylindracea (Margarita) Lea......-.....-. 920 | Decora (Margarita) Lea.....-.-.------- 643 Proc. N. M. vol. xxii 64 1010 INDEX. Page Page Decora (Margaron) Lea..........-------- 644 | Deviata (Truncilla) Reeve ............-.- 52h Decorata (Symphynota) Lea........-.-...- 664. | Deviatus (Margaron) Lea .............-.- 524 Decoratus (Margaron) Lea..........-..-- 664 | Deviatus (Unio) Reeve ..................- 524 Decoratus (Unio) Lea ..........--..------ 664. || Diagemeess: 520 Giese ce accion seen 514,615 Decumbens (Margaritana) Lea........-.. 679 | Dianisotis Rafinesque .................--- 583 Decumbens (Margaron) Lea.........-.--- 679 | Diaphanus (Unio) Rafinesque..........-. 744 Decumbens (Unio) Lea............------- 679 | Diazensis (Unio) S.H. Wright ..........- 714 Decurvyatus (Unio) Rossmissler .......--- 698 | Diespiter (Unio) Mabille ...........-...-. 861 Dehiscens (Anodonta) Peetel.....-...-..-- 655 | Differtus (Unio) Lea .............--...... 729 Dehiscens (Baphia) H. and A. Adams.... 655 | Difficilis (Margaron) Lea................. 554 Dehiscens (Hemilastena) Agassiz ......-. 655) |) Dithicilis/|((Unio)MWeasesseasseaceeeeeee eee 5a4 Dehiscens (Margarita) Lea.....-.......-. 654 | -Digenmceras o- soasacs sie ccaeteee ee Ree ees 514, 607 Dehiscens (Margaritana) Clessin......-.. 655 | Digitata (Quadrula) Morelet ............- 770 Dehiscens (Margaron) Lea....-.-.-..-.-. 655 | Digitatus (Unio) Morelet................. 770 Dehiscens (Unio) Say ..............------ 654 | Digitiformis (Nodularia) Sowerby........ 809 Dejecta (Anodonta) Lewis....-.......--. 630 | Digitiformis (Unio) Sowerby.....-....... 809 Delaportei (Hyriopsis) Crosse and Fischer 580 | Dignatus (Margaron) Lea................ 688 Delaportei (Unio) Crosse and Fischer.... 580 | Dignatus (Unio) Lea ..................... 688 Delesserti (Margaron) Lea...........----- 693 | Dignota (Anodonta) Ferussac....-....... 631 Delesserti (Unio) Bourguignat........-.--- 692 | Dignota (Anodonta) Rafinesque ......... 648 Delicatus (Margaron) Lea.............--- 690 | Dilatata (Unio) Rafinesque .............. 744 Delicatus (Unio) Lea..........-.-:------- 690) Dilatatush(Uimio)eSayeesacseeeee eee eres 704 Delodonta (Unio) Lamarck ..........---- 873 | Diminuta (Nodularia) Lea ............... 826 Delodontus (Diplodon) Lamarck.......-. 873 | Diminutus (Margaron) Lea .............. 826 Delodontus (Margarita) Lea.........-..-- SE}||, Dyyemvo oyonAwlS ((WWhavlo)) WEE) Seacceccssconusaace 826 Delodontus (Unio) Sowerby...-...-------- 539 | Dimota (Nodularia) Lea ................. 818 Delphinulus (Lampsilis) Morelet ......-.. 576 | Dimotus (Margaron) Lea................. 818 Delphinulus (Unio) Morelet .........---- 576,577 | Diolibanus (Pleiodon) Bourguignat .....- 908 Delphinus (Margaron) Lea........-..--.- 579 | Diploderma (Bariosta) Rafinesque ....... 744 Delphinus (Unio) Grtiner .........-..-.-. 579 | Diplodon Spix.......-.... 506, 515, 867, 872, 873, 883 Delphinus (Unio) Spengler........-.-.--. 744 | Diplodon (Unio) Philippi ................ 882 Deltoidea (Alasmodonta) Baker........-- 668 | Dipsas (Anodonta) Blainville............ 584. Deltoidea (Baphia) H.and A. Adams..... 668) |) -DipsastGea chiesseeemsccreetececieeeeriaee 583 Deltoidea (Margarita) Lea..........---.. 668'|/ Dipsax: VolgtJems <*2ae. cena eee 583 Deltoidea (Margaritana) Lea.........-.... 668 | Discoidea (Barbala) H.and A. Adams.... 585 Deltoidea (Margaron) Lea.....-...-..-.-. 668 | Disciformis (Zaira) Rochebrune -......-- 862 Deltoidea (Strophitus) Conrad .........-. 668 | Discoidea (Cristaria) Lea..............-.- 585 Deltoidea (Unio) Hanley -....-..----.---- 668 | Discoidea (Dipsas) Kuster............-... 585 Delumbis (Lampsilis) Conrad....-.....-. 531 | Discoidea (Margarita) Lea............... 585 Delumbis (Unio) Conrad ................- 531 | Discoidea (Symphynota) Lea............ 585 Delumbis (Unio) Kuster........-......... 559 | Discoideus (Margaron) Lea.............. 585 Demararaensis (Diplodon) Lea........... 880 | Discoideus (Unio) Hanley .....-...-..-.- 585 Demararaensis (Margaron) Lea......-..- 880 | Discoideus (Unio) Sowerby .-..........--- 574 Demararaensis (Unio) Lea......-.......-. 880 | Discomya Simpson ......-...-..--..-...--- 802 Dembee (Nodularia) Reeve.............. 826 | Discrepans (Margaron) Lea ....-..-.-.--- 554 Dembee (Unio) Reeve ....-..........-.-- 826 | Discrepans (Unio) Lea....._.-......-..-- 554 Denigrata (Anodonta) Lea..............- 659 | Disculus (Diplodon) Lea.....-.........-- 887 Denigrata (Margaron) Lea............... 660 | Disculus (Margaron) Lea .......-........ 887 Denigratus (Margaron) Lea............-. 718 3\ Diseulus (Unio) Leas. 22. eca-ecsceieeeeeee 887 Denigratus (Unio) Lea ..........--......- 718 | Discus (Margaron) Lea............5...-.- 705 Depauperatus (Unio) Hutton.........-.... 890) |eDiscus (Unl0) iea ees -o see eee eee eee 705 Depressa (Mya) Donovan.....--.-.....--- 685 | Discus (Unio) Sowerby......--....------- 707 Depressa (Leguminaia) Westerlund...... 653 | Dispalans (Unio) B. H. Wright.........-. 736 Depressa (Obliquaria) Rafinesque......-. 603 | Dispansus (Unio) Lea........-.-....-.--- 549 Depressa (Unio) C. Pfeiffer............... 653}, Dispar. (Lam 'psilis)) Weamensseeaeeeceeeeee 561 Depressa (Unio) d’Orbigny........-.---.- 894 | Dispar (Margaron) Lea............-.-...- 561 Depressa (Unio) Lamarck...........--.-- 6037892) 1) -Dispar: (Umi0) sueaeteessse- se eeee eee eeeeee 561 Depressus (Margarita) Lea .......-..--..- 891) | Dissimilis (Umio0)) eases cne eee eee 730 Depressus (Margaron) Lea ..........-...- 891 | Distans (Unio) Anthony ..........--..... 534 Depressus (Unio) Lamarck............... 892 | Distortus (Unio) Beam........5.....22ccce 744 Depressus (Unio) Lesson .........-----.-- 891! ||) Distortusi(Umio)sHeudess- 4s. 442s secre 807 Depressus (Unio) Peetel ....-.......-..--- 685 | Divaricata (Spatha) yon Martens ........ 901 Depressus (Unio) Reeve....--.-.--.------ 891 | Divaricatus (Diplodon) Lea ............. 878 Depygis (Unio) Conrad.......2.---.------ 601 | Divaricatus (Margaron) Lea............. 878 Deshayesii (Unio) Michaud ...........-.- 682..| Divaricatus (Unio) Lea ...--.55......---- 878 Despecta (Anodon) Heude..............- 6388 | Divergens (Quadrula) Benson............ 802 INDEX. HOW Page Page Divergens (Unio) Benson ..........-...--- 802 | Duclerci (Chamberlainia) Rochebrune .. 582 Diversa (Alasmidonta) Conrad ........-. 669 | Duclerci (Unio) Rochebrune..........-.- 582 Diversus (Unio) Conrad............--.--- 669 | Dugasti (Unio) Morlet........:.......:... 811 Dolabella (Castalia) Sowerby -...---.---- 867 | Dumesleanus (Unio) Charmes ........... 847 Dolabelloides (Margaron) Lea .........-- 750 | Dunkerianus (Unio) Lea........:........ 882 Dolabelloides (Pleurobema) Lea.......--. 750 | Dunlapiana (Anodonta) Lea...........-. 635, 636 Dolabelloides (Unio) Lea ......-.-.--.--- 750 | Duponti (Parreysia) Rochebrune ........ 8)6 Dolabreeformis (Lampsilis) Lea ........-- 529 | Duponti (Reneus) Rochebrune........... 846 Dolabreeformis (Margarita) Lea.....-..-- 529 | Duponti (Unio) Rochebrune..........-.. 846 Dolabreeformis (Margaron) Lea........-- 529 | Duprei (Callonaia) Recluz..........:.... 867 Dolabreeformis (Unio) Lea ......--..----- 529 | Duprei (Castalia) Recluz................. 867 Dolabreeformis (Unio) Sowerby ..-.-.-.-.--- 527 | Duprei (Margaron) Lea.................. 867 Dolearis (Anodonta) Lea.........--.-.--- 634 | Dupuyi (Anodonta) Ray and Drouet .:.. 624 Doliaris (Anodonta) Lea .......-.-.-.----- 634 | Durieui kullethensis (Unio) Lea......... 695 Doliaris (Lampsilis) Lea ...........-...-- 633 | Durieui (Margaron)-‘Lea.:...-....:....... 694 Doliaris (Margaron) Lea ........-.......-. 533,634 | Durieui (Unio) Deshayes................. 694. Doliarisy(Umio) Wealesas-o-eeesasseee ene. 533 | Duttonianus (Margaron) Lea ............ 736 Dolichorhynechus (Unio) Tapperone- PDuttonianusy (Unio) eames see see 736 Can Chris Shah as Sek ase eae eens S61 sD ysnomiayAPAssiz)pamaeeieereeee eee ee 521 Doliolum (Anodonta) Heude ............ 640 | Dysonii (Nephronaias) Lea .........-.--- 594, Dolcsus (Margaron) Lea ....-- neers 569 | Dysonii (Margaron) Lea.................. 594 Dolosusk(Unio) Weasas2ae sess oe ec eee =e Gxt} |] IDAYSoranbl (Uigwlo)) IWS ok Ge ooonadenoooudsse 594 Dombeyana (Unio) Valenciennes....--..- 772 | Ebenus (Margarita) Lea.................. 793 Donaciformis (Margarita) Lea ....-..-..-.- 605 | Ebenus (Margaron) Lea.................. 793 Donaciformis (Margaron) Lea .-....-.--- 605 | Ebenus (Quadrula) Lea........:......... 793 Donaciformis (Plagiola) Lea ........-...-- 605s ee benwish (Unio) pbeaeecceeaseceeeeee eee 509, 793 Donaciformis (Unio) Lea............-..-- 605 | Ecarinata (Castalia) Mousson...-...-.--- 865 Dooleyensis (Unio) Lea ...-.-...-...--.-- 727 | Ecarinatus (Tetraplodon) Mousson...... 865 Moreiy(Wnio) Bs He Wright. --ce--es ose 710,719 | Edentula (Alasmodonta) Say -........... 616 Dorfeuillianus (Margarita) Lea ......-..-.- 780 | Edentula (Anodonta) Ferussac .......... 616 Dorfeuillianus (Margaron) Lea .......... 780 | Edentula (Anodonta) Say...-...-.:...... 503, 504 Dorfeuillianus (Unio)........-.---.--..-- 779,780 | Edentula (Margarita) Lea................ 616 Dorri (Nodularia) Wattebled.......__---- 809 | Edentula (Margaron) Lea.......--....... 616 Morris (Umio) Wattebled== =] ees ees oe 809 | Edentula (Uniopsis) Agassiz --........... 616 Dorsatus (Margaron) Lea ......-..-..-.--- 711 | Edentulus (Anodon) Sowerby ........... 643 Dorsatus (Unio) Lea....-...-----------:-: 711 | Edentulus Payonius (Strophitus) Lea.... 617 Dorsuosus (Diplodon) Gould -..........-- 888, 889 | Edentulus (Strophitus) Say .............. 616 Dorsuosus (Margaron) Lea..........----- 889 | Edgarianus (Margaron) Lea .-.-.-...:..- TAT Dorsuosus (Unio) Gould.......-.-...--...- 889 | Edgarianus (Pleurobema) Lea ........-.- VhT Douglasiz nipponensis (Nodularia) yon Edgarianus (Unio) Lea..:.....--2.2.0.--: 747 Mamtensraceesnice secee a nceee cee le seco wee 809 | Edulis (Anodonta) Heude ............--.. 638 Douglasiz (Nodularia) Gray .....--..- 807, 808,861 | Effulgens (Diplodon) Lea ..........-..... 879 Douglasiz Shanghaiensis (Unio) Lea .... 808 | Effulgens (Margaron) Lea.......-.....-.- 879 Douglasiz (Unio) Gray-.....-...----- 806, 807,808 | Effulgens (Unio) Lea..................... 879 Doumeti (Unio) Letourneux and Bour- Egyptiacus (Unio) Hanley .........-:-..- 821 guignat......._ SOOO rere eae a Ree 744) \biohtin(Unio)ebeetelesssse-eeeeseeree eee 771 Downiei (Margaron) Lea.....--.-.......- 733 | Hightsii (Margaron) Lea .........-......- 771 Dowmniel) (Un10) Wea s-. 22. ssn. ses nese 1EY2, Jom || soiedoeyol ((Opouta)) IER, ossosdecoocascesanesuc 771 Draparnaldi (Unio) Deshayes............ 692 | Elachista (Anodonta) Bourguignat....-. 625 Dromauxi (Cameronia) Bourguignat .... 910 | Electrinus (Unio) Reeve........--....--. 741 Dromauxi (Unio) Bourguignat .........-. 821 | Elegans (Margarita) Lea.............:-.. 604 Dromus (Cyprogenia) Agassiz...........- 615 | Elegans (Margaron) Lea ............-...- 604 Dromus (Dromus) Lea .....-...-.-..-.--- 615 | Elegans (Plagiola) Lea ............-..... 694, 605 Dromus (Margarita) Lea .........-....--. 615) | Hlegans/ (Unio) Wea. 22. osteo sare 604 Dromus (Margaron) Lea .................- 615 | Elegans (Zaira) Rochebrune............. 862 Dromus Simpson ...--.--..----------- 510,514,614 | Elliottii (Margaritana) Lea .............- 619 DrOmMUsi (UNIO) WLea Mer sass sels see 614,615 | Elliottii (Margaron) Lea ....--..--. OES Sate 619, 769 Droueti (Spatha) Chaper...........-.---- 897 | Elliottii (Quadrula) Lea -...-.....2.2.2.. 768 Droueti (Unio) Dupuy...-..-...---..--..- 699 | Elliottii (Strophitus) Lea............5...- 619 Dubia (Alasmodonta) Ferussac ....-..... (783. |) LabYoynabl ((\Growio)) 1beeh s SACK eee sGaassaeeoeee 768 Dubia (Anodonta) Bosc.......--.-------- 903} Ellipsaria (Obliquaria) Rafinesque.....-. 744 Dubia (Iridina) Chenu.......-....---.--- 903 | Ellipsarius (Unio) Say .......--......-... 539 Dubia (Mulela) Gmelin ..../......:...... 903 | Ellipsiformis (Lampsilis) Conrad ........ 557 Dubia (Mytilus) Gmelin ........--......- 583,903 | Ellipsiformis (Unio) Conrad ..2..7....... 597° Dubiay(blatinis) ue dean eec- eee eee 903 | Ellipsis (Margarita) Lea.........-. rersaieeiers ‘602 Dubius (Unio) Fitzinger ...............-- 682 | Ellipsis (Margaron) Lea.............-.... 602 1012 INDEX. Page. Ellipsis (Obovaria) Lea ........-..---...- 540,602 | Estabrookiana (Pleurobema) Lea.......- Ellipsis (Unio) beatae neeeee eee 601, 602, 754 Ellipsoideus (Unio) Locard ...........--- 690 Elliptica (Anodon) Heude.............-- 638 Elliptica (Margaritana) Lea ...........-- 619 Elliptica (Margaron) Lea .....-...--.---- 619 Elliptica (Mya) Eaton...........-.-..---- 539 Elliptica (Unio) Rafinesque.........-.---- 744 Ellipticum (Diplodon) Spix........-- 872, 873, 877 Ellipticum (Pseudodon) Conrad.....----- 836 Ellipticus (Margaron) Lea.....-.-.------ 877 Ellipticus (Unio) Barnes......-.--.------ 539 Ellipticus (Unio) Wagner.......-.------- 877, 879 Elliptio Rafinesque ....-..-..-..-.------- 679, 700 Elongata (Anodonta) Potiez & Michaud. 623 Elongata (Brazzea) Bourguignat......-- 907 Elongata (Burtonia) Bourguignat ......- 578 Elongata (Damaris) Leach........-.-.---- 676 Elongata (Grandidieria) Bourguignat ... 830 Elongata (Hyria) Swainson...........--- 871 Elongata (Iridina) Sowerby ....--.------ 903 Elongata (Margarita) Lea........-..----- 928 Elongata (Mutela) Peetel....-........---- 903 Elongata (Platiris) Lea ..............---- 903 Elongata (Triquetra) H.and A. Adams... 871 Elongata (Unio) Goodrich ........------- 536 Elongata (Unio) Lamarck.........---.--- 676 Elongata (Unio) Michaud..........------ 697 Elongatula (Unio) C. Pfeiffer .........-.- 684 Elongatulus (Margarita) Lea ..........-- 684 Elongatulus (Margaron) Lea ......-..-.-- 684 Elongatulus (Unio) C. Pfeiffer. ....--..-- 513-684 Elongatus (Anodon) Swainson .......-.- 928 Elongatus (Glabaris) Swainson .......--- 928 Elongatus (Pleiodon) Bourguignat....... 908 Emarginata (Solenaia) Lea ...........-.- 655 Emarginatus (Anodonta) Clessin ......-- 655 Emarginatus (Margarita) Lea............ 696 Emarginatus (Margaron) Lea..-.-....--. 696 Emarginatus (Mycetopus) Lea .........-. 655 Emarginatus (Platiris) Lea........-..-.-- 655 Emarginatus (Solenaia) Lea......-....-. 656 Emarginatus (Unio) Lea..........---.... 695 Embia (Anodonta) Bourguignat ......... 627 Emesensis (Margaron) Lea ...........--- 698 Emesensis (Unio) Lea .....-...---------- 693 Emini (Nodularia) von Martens .......-. 823 Emini (Unio) von Martens.............-. 823 Emmonsii (Margaron) Lea.........-.-..- 735 HMMM STN (WiTO) wlve ae ae en ee: 735 Enearpa (Plagiola) Lea .......----------- 607 Encarpus (Margaron) Lea.........--.--:- 607 Enearpus (Unio) Lea.....-..-.---.-...--- 607 Endobranchizeies-soeeereeereeoeeee ene olon306 Ensiformis (Anodon) Spix ..-.......-..-.-- 932 Ensiformis (Glabaris) Spix............... 931, 932 Ensiformis (Iridina) Lea ....-......-...-. 932 Ensiformis (Margarita) Lea .............. 932 Ensiformis (Margaron) Lea .........----- 932 Episcopalis (Unio) Tristram............-. 694, Errans (Margaron) Lea.... .......----.-- 730 ID AA HOEH((LWpMO)) IVES oocoscossscoobeescouacs 730 Hschatigente sass cene ee coer 014, 614 Essoensis (Nodularia) Chaper.......-..-. 822 Essoensis (Unio) Chaper ........-.-.-.--- 822 Estabrokianus (Unio) Petel ...........-- 763 Estabrookianus (Margaron) Lea Estabrookianus (Unio) Lea ...-.-...--.-- Esula (Iridina) d’Orbigny.......-....-.-- Esula (Leila) d’Orbigny......-.-..-.----- Esula (Margarita) Lea.........-...-----.- Esula (Margaron) Lea.........:.....---.- Etawahensis (Margaritana) Conrad...-.- Etawahensis (Margaritana) Lea .......-. Eucirrus (Margaron) Lea ........-....:..- Eucirrus (Unio) Bourguignat .-.......... Eucyphus (Unio) Bourguignat........-.. HutirayGistelieeeassesee ese ce eerie Euphratica Churchillianus (Gabillotia) Bourguignat Euphratica (Gabillotia) Bourguignat.... Euphratica (Leguminaia) Westerlund ... Euphratica (Margaritana) Kobelt Euphratica (Pseudodon) Conrad Euphymus (Unio) Charmes Eurhynchus (Unio) Kuster Europe (Anodonta) Leach BUnyniavRannlesguc asses eee sa ssee eee Euscaphys (Anodonta) Heude Evanescens (Unio) Mousson ..........-.. Evansi (Diplodon) Adams and Angas.... Evansi (Margaritana) Peetel Evansi (Margaron) Lea ........-------.-. Evansi (Unio) Adams and Angas ......-. Evitatus (Margaron) Lea Byvatatus!(Wmio) sears tees seeeeeereee Exactus (Margaron) Lea Exactusi(Um10) | Wealmen-seseeeeeseseeeeeee Exacutusi (Unio) MLearencssesseeaceeeeeee Exanthemeticus (Lamellidens) Kuster .. Exanthemeticus (Unio) Kuster .........- Exasperata (Hyria) Sowerby....-.-.----. Excavatus (Lampsilis) Lea Exeavatus: (Unio) leases) essen eeteeeee Excultus (Unio) Conrad........-...-...-. Excurvyata (Anodonta) De Kay Exiguus (Margaron) Lea IDp-a UD) (Osh) IWS adcoaseconocosaucoccc Exilior (Anodonta) Lea ........--..-.-.-- Exilis (Anodon) Catlow and Reeve ...-.. Exilis (Anodon) Sowerby Exilis (Anodonta) Lea ...........-...-...- Exilis (Margarita) Lea ......-.....-.----- Hxalisi(Margarom)Wealeeccee-e-seeeeceas Exilis (Monocondylea) Pzetel **Exilis (Monocondylus) Morelet ..-.....-- Exilis (Pilsbryoconcha) Lea Exilis (Pseudodon) Morelet...-.........- Exilis) (Unio) Dunkersie32s22eseee eee Eximia (Anodonta) Bourguignat ........ Eximia (Brazzea) Bourguignat......-... Eximium (Colletopterum) Bourguignat.. Eximius (Margaron) Lea....-...........- Eximius (Physunio) Lea ...............-- Eximius) (Unio) sbeareresse ease eee eee Nxobranchisesass4-he eee eee ce nae ee eee Exolescens (Margaron) Lea ......-...---- Exolescens (Trapezoideus) Gould........ Exolescens (Unio) Gould...........------ Exotica (Anodon) Sowerby ..-.----------- Exotica (Anodonta) Blainville........... 688 902 588 088, 818 588 839 587 839 818 649 907 649 831_ 831 831 514 859. 859 859 927 903 INDEX. Page. Exotica (Anodonta) Lamarck.....-....-. 916 | Favidens pinax (Parreysia) Benson...... Exotica (Columba) Petel..........---.---- 924 | Favidens pinax (Unio) Hanley and Theo- Exotica (Iridina) Children.............-. 908 [EWG easenddooduddsuaccauoacuasbodbasnes HExotica (Iridina) Lamarck..........-...- 902,903 | Favidens plagiosoma (Parreysia) Benson. Exotica (Mutela) Lamarck..........-.--- 903 | Favidens plagiosoma (Unio) Hanley and HOtICaIGelatinis) Wearenasceeeeerieca= cee 903 Mneobaldeeger sees ceca ceeere seer Exoticus (Anodonta) Lamarck........--- O24a PHavidens! (Umio) Pleas sses sess seeee ee HOCUS eelelodom)sPeetelis-ese- emcee 903 | Favosa (Pleurobema) Lea..........-..... Expansus (Diplodon) Kuster...........-- 874 | Favosus (Margaron) Lea ................. iH xpansusy(WUmio)) Kuster =s2-<-25- 5455s Si Haviosusy (Umi10)) beaeeseee essere seas Explicatus (Lampsilis) Morelet .........- 571 | Fee (Parreysia) Tapperone-Canefri...... Explicatus (Unio) Morelet ..............- 571 | Fee (Unio) Tapperone-Canefri..........- yxtensus (Margarom) Lea...-....----.--- 731 | Feddeni (Parreysia) Theobald ........... Hxcensusy (Wmio) eases. -seeseee = -eeee == (ol eheddenig@Umo) enheobaldesssseeesereee se Exulcerata (Anodonta) Porro....-.....-- 623 | Fellmani (Margaron) Lea ................ Haan (MaArearita,)) Wea aera cee eiclae mci 877 | Fellmani (Unio) Deshayes ............... Faba (Margaron) Lea ......--.--.-..-.--- 877 | Feminalis (Anodonta) Gould..........-.. aban (Unio )adtOrbieniyeces-s-2 sees aes eee- 877 | Fenouilli (Anodonta) Heude............. Fabaceus (Margaron) Lea..........---..- 549 | Ferrarisii (Anodonta) d’Orbigny .......-- iHabaceus (Wino) Mueasecssec. + se neces 549) Herrissit (Unio) Marshessos-see-e- ee acceae Fabagina (Parreysia) Deshayes .......--- 847 | Ferruginea (Anodonta) Lea.............. Fabagina (Unio) Deshayes ......-.....-.- 847 | Ferruginea (Margaron) Lea ........-..--- Fabalis (Margaron) Lea.........-...--.-- 525 | Ferussaciana (Anodonta) Ferussac..-..-- Fabalis (Micromya) Lea......-......-...- 625 | Ferussaciana (Anodonta) Lea........ 504 Fabalis (Margarita) Lea...........---.-.- 525 | Ferussaciana (Margarita) Lea ............ TONS (WiawO)) IUCR ocoseagacosaouseoeegoos 524,525 | Ferussaciana (Margaron) Lea............ Fabula (Baphia) H. and A. Adams....-.-. 661 | Ferussacianus (Anodontoides) Lea....... Fabula (Margarita) Lea ..........-.-.----- 661 | Ferussacianus (Margaron) Lea ........... Fabula (Margaritana) Lea ..............- 660, 661 | Ferussacianus modestus (Anodontoides) Fabula (Margaron) Lea ....-...--..-----. 661 ease ea eee Sanaa ase seateceeeele eee Fabula (Micromya) Agassiz...........--- 661 | Ferussacianus subcylindraceus (Anodon- Hal way (Pegias) ean se asceeeeneceecccae 661 toides): Meayeessa- acess nese oaeceeeeee Fabula (Strophitus) Conrad.............. 661 | Ferussacianus (Unio) Lea.............-.- HalouilayCWUmi1o) WHamileyges sea cseseseciecea se 661 | Fibrosa (Quadrula) Heude............... Faidherbi (Reneus) Jousseaume .......-- 8227 = Mibrosus: (Unio) Heudetea:2eececeeeceneee Falcata (Alasmodon) Gould............-. 677 | Fibuloides (Margaron) Lea.............-.. Falcata (Solenaia) Higgins........-...... 656 | Fibuloides (Unio) Lea..--.-.............. Faleatus (Mycetopus) Higgins ........... 656 | Filippiana (Anodon) Heude.............. Halcatwsy (latins) ue es = 4.5 eee eee 656 | Firmus beettgeri (Diplodon) von Ihering . Falcatus (Unio) Sowerby........-..--...- 677 | Firmus beettgeri (Unio) von Ihering ....-. Fallaciosus (Lampsilis) Simpson ......... Si Rirmus) (Diplodomn)sbeassetesc ee eseceecee. Hallax (Margaron) lea-..:222.--.-.-2-.-: 548 | Firmus (Margaron) Lea.................. Alle. (OMIM) bE soscosucssdoososseccsose 54855|) Hirmms (Unio) pHeudessesereacee pees Falsus (Glabaris) Simpson .......2......- OBA || Lathe sors ((LOhawto))) Ie ese sao dscacossocudsood Famelicus (Margaron) Lea............... 879 | Fiscallianus (Unio) Kleciach ............ Famelicus (Unio) Gould. ................ 879 | Fischeriana (Nodularia) L. Morlet.....-. Fantoziana (Anodon) Heude............. 639 | Fischerianus (Unio) L. Morlet ........... Fasciata (Unio) Rafinesque ............-- 744 | Fisherianus (Margarita) Lea -..........--. HASciatwss(WiM1O) i Saye-secesc ee eeeee cet. 539 | Fisherianus (Margaron) Lea........-.... Fasciola (Lampsilis) Rafinesque ......-... 577 | Fisherianus (Unio) Lea..........- 7... 584 Fasciolaris (Obliquaria) Rafinesque....-. 744 | Fissidens (Nodularia) Bottger..........-. Fasciolaris (Unio) Conrad............ sage 612 | Fissidens (Unio) Bottger...-...2..-22-.-- Fasciolus (Unio) Conrad......-..........- 556 | Flarescens (Unio) Petel ....-.......-...- Fasciolus (Unio) Ferussac..............-. 527 | Flava (Anodon) Anthony..-..--..-..-..- Hasciolus)(Umi0)) Sayeseses- aces ceaeeee eee 532 | Flava (Obliquaria) Rafinesque.......---- Fassinans (Margaron) Lea ........-.---.- 762 | Flavescens (Margaron) Lea..........:-.- Fassinans (Pleurobema) Lea............. 762 | Flavescens (Ptychobranchus) Lea ....... Fassinans rhomboidea ( Pleurobema ) Plavescens (Unio): Lea -_--:22..2..5.-.2.- Sim PSOMM eee see cect ce acces sae 762m blavi dens) (Unio) seeetel ees ccceeracte se Hassinans| (Wmio) Lea... --222222c-------- 762 | Flavidulus (Margaron) Lea....-....2-.-- Fatuus (Lampsilis) Lea .................. 553 | Flavidulus (Pleurobema) Lea..........-- Fatuus (Margaron) Lea ......-.. Sepa re Ddoui|eHlavidulusy((Umio) eave c-e- ees sesecnaee Hatuisi(Umio)wbeaimceacensseeceeee eee. bbs peblavadus) (Unio) beays22s22 252 eae ese Favidens marcens (Unio) Benson....-..-.. 843 | Flavus rubiginosus (Unio) Petel......... Favidens (Margaron) Lea..........-.---- 842) Mlavusi(Unio)Conmrad\t22 ccs sce ccece Favidens (Parreysia) Benson ............ 842, 843 Flexuosa (Dysnomia) Agassiz......--..-. 692 657, 658 639 617 659 735 $27 1014 INDEX. Page. Page. Flexuosa (Obliquaria) Rafinesque ....--. 744 | Fouladougouensis (Nodularia) Joussea- : Flexuosa (Quadrula) Simpson ......-.-.- 790 WONG os5056 EEN EES Maa Me SBE GonanaoaG 823 Flexuosus (Unio) Conrad .........-----.- 521 | Fouladougouensis (Reneus) Jousseaume. 823 Flexus (Toxolasma) Rafinesque........-. 744 | Fragilis (Anodonta) Fitzinger ........... 648 Florentina (Truncilla) Lea .........-..--- 524 | Fragilis (Anodonta) Lamarck...........- 632, 633 Florentinus (Margaron) Lea .........-..- 524 | Fragilis gracilis (Unio) Petel ............ 574 Florentinus (Unio) Lea ...............--- 524 | Fragilis (Lasmonus) Rafinesque ........- 744 Florida (Anodon) Heude....-.....--.-..- 639 | Fragilis (Margarita) Lea .............--.-. 632 Floridensis (Margaron) Lea........-..... 544 | Fragilis (Margaritana) Kuster ........... 836 Floridensis (Unio) Lea............------- 544 | Fragilis (Margaron) Lea ..............-.. 632 Floridensis (Unio) 8. H. Wright.......... 560 | Fragilis (Metaptera) Conrad .......-..-.- 574 Fluctiger (Margaron) Lea............-.-- 814 | Fragilis (Microcondylea) Peetel ......... 836 Fluctiger (Nodularia) Lea ..........-..--- $14, | Fragilis (Symphynota) Ferussac ......... 574 Fluctiger (Unio) Lea............-.-.--.-- 814 | Fragilis (Unio) Nevill...................- 858 Fluminea (Anodonta) Heude..........-. 640 | Fragilis (Unio) Rafinesque...-- ASS 744 Fluviatilis (Anodonta) Bose .....--.-.--- 631 | Fragilis (Unio) Sowerby ....-.-.-.----.-- 883 Fluviatilis (Margarita) Lea ...........--- 631 | Fragilis (Unio) Swainson ...........-..-- 573 Fluviatilis (Margaron) Lea .........-...- 631 | Fragosa (Quadrula) Conrad.-............ 777 Fluviatilis (Mytilus) Dillwyn ___-....-..-. 631 | Fragosus (Margarita) Lea................ 717 Fluviatilis (Unio) Green .....-.-...-.-.-- 721 | Fragosus (Margaron) Lea...............- T77 Flyensis (Diplodon) Tapperone-Canefri- . 890 | Fragosus (Unio) Conrad ............--.-- 777 Flyensis (Unio) Tapperone-Canefri ....-. 890 | Franciscana (Aplodon) Lea....-...-....- 912 Fokkesi (Unio) Dunker...........-....-- 894 | Franciscana (Margarita) Lea ............ 912 Holiacea, (Unio) Goulds: 5252 cscs secre 858 | Franciscana (Margaron) Lea ...........- 912 Foliaceus comptus (Trapezoideus) Des- Franciscana (Monocondylea) Moricand. 912 hayes and Jullien ...........-.....-..-- 858 | Franciscana (Unio) Moricand............ 912 Foliaceus (Margaron) Lea .....-..-.----- 858 | Fraternus (Margaron) Lea..............- 709 Foliaceus (Trapezoideus) Gould ......... 858))\) Hraternus ((Umio) Mier e tee eeeeeeeeeee 709 Foliata (Truncilla) Hildreth ............- 521 | Frenzellii (Diplodon) von Ihering....... 882 Foliatus (Margarita) Lea..-.......-.-..-- 521 | Frenzellii (Unio) von Ihering............ 882 Foliatus (Margaron) Lea.....-......----- 521 | Friersoni (Quadrula) B.H. Wright....... 787 Foliatus (Unio) Hildreth.......-.......-. 521 | Friersoni (Unio) B. H. Wright............ 787 Folliculatus (Margarita) Lea..........--. 737 | Friniana (Anodon) Heude .......-....... 638 Folliculatus (Margaron) Lea......-.-..-. 737 | Fryanus (Unio) B.H. Wright............. 714 Folliculatus (Unio) Lea...-..--....-.---- 737 | Fucatus (Margaron) Lea..........-...... 542 Foncki (Unio) Philippi .............----- 882 | Fucatus (Mytilus) Dillwyn......-........ 622 Fontaineana (Unio) d’Orbigny .....----. 886 | Fucatus (Unio) Lea................-.....- 542 Fontainiana (Unio) d’Orbigny......-..--- 886 | Fulgens (Lampsilis) Rafinesque ......... 577 Fontainianus (Diplodon) d’Orbigny ...-. 886 | Fulgidus (Margaron) Lea..........--.....- 789 Fontainianus (Margaron) Lea .........-- 886 | Fulgidus (Unio) Lea..................... 789 Fontanus (Unio) Conrad..........--.--.. 547 | Fuliginosus (Margaron) Lea...........-.. 727 Fontinalis (Unio) Rafinesque .....-....-- 744 | Fuliginosus (Unio) Lea .........-..-.-..- 722, 727 Footei (Arcidopsis) Theobald ...-........ 861 | Fuligo (Unio) Lea...............-.....-.- 551 Footei (Unio) Theobald...........---..-- 861 | Fulmineus (Unio) Philippi .............. 841 Footiana (Anodonta) Lea........-------- 625, 642 | Fulvaster (Nodularia) Drouet and Cha- Footiana (Margaron) Lea..........------ 642 POL tecicie lca Sees ae ONC aes aes eee 819 Forbesiana (Anodonta) Lea.....-.......- 927 | Fulvaster (Unio) Drouet and Chaper .... 819 Forbesiana (Margaron) Lea............-. 707,927 | Fulvus (Margarita) Lea.........-.....-.- 709 Forbesianus (Glabaris) Lea...........-.-. 27 | Fulvus (Margaron) Lea..-.......-...-..- 709 Forbesianus (Unio) Lea .............-..-- 107s ulus) (Unio) Wiear-neeeeeeeeee ees eeeeee 709 Foremanianus (Margaron) Lea ........--. 613 | Fulvus (Unio) Rafinesque...........-.--. 744 Foremanianus (Ptychobranchus) Lea.... 613 | Fumatus (Margaron) Lea..........-..--. 726 Foremanianus (Unio) Lea .......-...-... 613)>) Bumatus!(Umio) Wear sees esse eee 726 Formosus (Unio) Lea ............-.--.--: ol74| Hunckay(Unio)pReeteleesseeees-seeeeeeeeee 882 Forscali (Unio) Parreyss ....-....----.--- 862 | Funebralis (Diplodon) Lea ........-.-...- 887 Forsheyi (Margaron) Lea .............--- 778 | Funebralis (Margaron) Lea...........--- 887 Forsheyi (Quadrula) Lea.............----. 778 | Funebralis (Unio) Lea .........-..--- 885, 886, 887 Forsheyi (Unio) Lea........../..--:-....- 778 | Fureatum (Diplodon) Spix ............-- 871 Fossiculifera (Anodonta) Petel.......... 914 | Furva (Pleurobema) Conrad.....-..-.-.-- 758 Fossiculifera (Fossula) d’Orbigny.......- 914. | Furvus (Unio) Conrad .........-.......-- Fossiculifera (Margarita) Lea .........--. 914-| Fusca (Anodon) Heude.........---.-.---- 638 Fossiculifera (Margaron) Lea ........---- 914 | Fuscatus (Margaron) Lea.:...........--- ALG » Fossiculifera (Monocondylea) Lea ...... 914 | Fuseatus (Unio) Lea....-...-...-- elas 717 Fossiculiferus (Unio) Catlow and Reeve . 914 | Fusconaia Simpson........ ee SA ae SC 78h Fossulla’ eae sekseasncccee cae eee es 907, 515, 914 | Fusculus (Unio) Rossmiissler........-..-. 698 758 INDEX. 1015 Page. Page. Gabbianus (Margaron) Lea.......-.----- 607 | Gibbosa (Amblema) Rafinesque.........- 7038, 744 Gabbianus (Unio) Lea...........-..------ 607 | Gibbosa (Anodonta) Say .._....._...-.--- 635 Gabillotia Sernvainen.4a.ssecesesees- 506,514,649 | Gibbosa dunlapiana (Anodonta) Lea ___. 636 Gabonensis (Margaron) Lea...-.--..----- 823 | Gibbosa ( Dysnomia) Agassiz ......___._- 523 Gabonensis (Nodularia) Kuster...-....-- 823 | Gibbosa.(Margarita) Lea................. 636 Gabonensis ( Wmio) BKeUS tenseeeeeeeeeeeec 823 | Gibbosa (Margaron) Lea .......___.-_...- €36 Gaditana (Mya) Schreibers -........-.--- S4es Gio bosan @Miya)) sa tom) sense hence eee ee 703 Galilei (Unio) Locard............-----.-- 693 | Gibbosula Simpson...........__- 506, 509, 514, S04 Gallandi (Anodonta) Bourguignat ...-.--- 648 | Gibbosus arcus (Unio) Conrad ........... 704 Gancinensis (Spatha) Rochebrune.....-- 902 | Gibbosus armathwaitensis (Unio) B. H. Gangrenosus (Unio) Schmidt ..........-- 698 AWS Os eeeccre cae ee ss a ear 70h Garou (Umi10) ehilippieca.-sscs-s+ceo as: 678 | Gibbosus delicatus (Unio) Simpson ...... 704 Gargotte (Unio) Rossmiissler .........-.- 698 | Gibbosus (Margarita) Lea ..........5....- 703 Gassiesi (Diplodon) Kuster.........------ 881 | Gibbosus (Margaron) Lea................ 703 Gassiesi (Unio) Kuster ...............---- 881 | Gibbosus perobliquus (Unio) Conrad..... 520 Gastonensis (Margaron) Lea ....-...--..- 723 | Gibbosus perplexus (Unio) Petel ........ 523 Gastonensis (Unio) Lea ..............---- 723 | Gibbosus subgibbosus (Unio) Lea........ COL Gaudichaudi (Margaron) Lea.......----- S129) Gab bosust@Uiniio) see aeaaes ee eee eee eee 510 Gaudichaudi (Nodularia) Eydoux -.....-.. 812 | Gibbosus (Unio) Barnes.......... 504, 545, 703, 707 Gaudichaudi (Unio) Eydoux...........-.. 812 | Gibbosus (Unio) Ferussac.___.-.......... 523 Geddingsianus (Margaron) Lea .....-.--. 715 | Gibbum (Anodon) Benson ....--......-.- 638 Geddingsianus (Unio) Lea ..........-..-- 715 | Gibbus (Unio) Spengler .................. 862 Geminus (Margaron) Lea .......-...--.-- 733 | Gigantea (Anodonta) Lea........-..-..-. 643 Geminns (Unio) ea... 0...-..---2-2---- 5: 733 | Gigantea (Cameronia) Bourguignat..._.. 909 Generosus (Lamellidens) Gould.........- 857 | Gigantea (Columba) Petel..............- 923 Generosus (Margaron) Lea..........----- 857 | Gigantea (Margarita) Lea................ 643 Generosus (Unio) Gould ...........-..-.--- 857 | Gigantea (Margaron) Lea ................ 643 Genezarethensis (Unio) Locard .......--. 690 | Giganteus (Anodon) Spix ...............- 916, 923 Genthii (Margaron) Lea............-...-- dol Giganteus)(Umio)) Wearenn- ene a-eececcee 767 Gentine (Wnio)) eases s44-442 25-555 ool | Gigas (Complanaria) Sowerby ..-........ 666 Gentiliana (Barbala) Heude ...........-- 586 | Gigas (Megadomus) Swainson...........- 608, 666 Gentiliana (Cristaria) Heude ............ 586 | Gigas (Unio) Sowerby ................--.- 608 Genuinus (Margaron) Lea ....-.......--- 548 | Giraudi (Cameronia) Bourguignat ....._. 910 Genuinus (Unio) GCA ee te siete See eras 548 | Giraudi (Grandidieria) Bourguignat..... 830 Geometricus (Unio) Lea........-.-....--- 740 | Giullaini (Anodonta) H. and A. Adams... 933 Georgiana (Alasmidonta) Lea..........-. CUO || Chay oats Caen s con coccécaseansoseccoucaas6 501, Georgiana (Margaritana) Lea ..........-- 670 507, 515, 648, 914, 916, 918, 919, 923, 926, 930, 932 Georgiana (Margaron) Lea......-....---- 670 | Glaber (Margarita) Lea ....-............. 554 Georgiana (Pleurobema) Lea ...-....-..-- 761) |>Glaber (Margaron)) eas -s- 4... 92s -ncesee 554 Georgian (Anodonta) Griffith .......... C7 || Gel oer (What) Ico asacodegesasbeddsooce- 554 Georgianee (Glabaris) Griffith ...........- 927 | Glabra (Anodonta) Stabile ............... 623 Georgianus (Margaron) Lea............-- 761 | Glabrata (Unio) Lamarck ................ 721 Georgianus)(Umio) bea. 32.-5-.22----2-26- 761 | Glabratus (Unio) Sowerby............... ea OOU Georgina (Unio) Lamarck................ 721 | Glabrus (Anodon) Sowerby ..-...-......- n922) Gerbidoni (Unio) Eydoux................ 811 | Gladiator (Unio) Ancey..................- 862 Gerhardtii (Lampsilis) Lea............-.. 532 | Gladiolus (Nodularia) Heude ............ 807 Gerhardtii (Margaron) Lea .....-..-..... 532);| Gladiolus (Unio) Heude....-2-.- 2.22222: 807 Gerhardtii (Wmio) eas.css2.2526.5.e 2 ele 532 | Glandacea (Quadrula) Lea.............-- 793 Germanus (Lampsilis) Lea......-....-... 565 | Glandaceus (Margaron) Lea ...........-.- 793 Germanus (Margaron) Lea.........-.-..-- 565. | Glandaceus (Unio) Lea --..........-..--- 793 Gerrardi (Unio) von Martens ...---....-- 822 | Glandulosa (Anodonta) Anthony ....-.--- 632 Gesneri (Anodonta) Petel.......-.-2-.___- 634 | Glans (Lampsilis) Lea..............---.-- 565 Gesnerii (Anodonta) Lea.....-..-.-.---_- 634 | Glans (Margarita) Lea ...........-..---.- 565 Gesnerii (Margaritana) Lea ............-. 619 | Glans (Margaron) Lea.....--:..-.-2.2-5-- 565 Gesnerii (Margaron) Lea..........-:...-. GI9KG34al Glanes (Wm10))Weasaceea-ces seen eer ce 565 Gesnerii (Strophitus) Lea .....-........-. 619 | Glauca (Anodonta) Valenciennes......-- 926 Gesnerik(Wnio)sbeameseren se sa-eeeeeeeea 727 | Glauca cinaloensis (Anodonta) Crosse and . Gianelli (Unio) Tapperone-Canefri....... 862 Misc erase ees ee ene 926 Gibba (Margaron).Lea.....-....2.22:--.2- 638 | Glauca (Margarita) Lea ..-.......-..-..-- . 926 Gibber (Margarita) Lea .................. 762 | Glauca (Margaron) Lea.............-.--- 926 Gibber (Margaron) Lea -..--............- 762 | Glauca (Monocondylea) H.and A, Adams 926 Gibber (Pleurobema) Lea........-.-....- 762.|Glaucinus (Unio) Porro .. 2.2 2.5..5... << 698 Gibberi(Umio) pleases ssse se seeeeeeee 762 | Glaucus cinaloensis (Glabaris) Crosse and : Gibbesianus (Margaron) Lea............. a2 MMISCH ED issieeis sass SoS acai a oer a sielsi ewe OO: -Gibbesianus (Unio) Lea............2..2.- -. 732 |.Glaucus (Glabaris). Valenciennes..........924, 926 1016 INDEX. Page. Page. GlebulaiConrad tes eee eee eeeeee 506,514,597 | Granosus (Margaron) Lea........---.---- 879 Glebulusi(WUmio) Sayers sere see ee eee eeeee 598 | Granosus (Unio) Schumacher.......-..-- 691 Glenelgensis (Diplodon) Dennent....-... 889 | Grantianus (Unio) Bourguignat.......... 862 Glenelgensis (Unio) Dennent .........---. 889 | Granulatus (Margaron) Lea.-.......-..... 565 Globata (Quadrula) Lea......5....-..-.-- 793 | Granulatus (Truncilla) Rafinesque ...... 518 Globaitus) (Wino) Wweameseeesecees- see ae 793 | Granulatus (Unio) Lea. 2 2-2-2225. 2.- =>. - 565 Globosa (Anodonta) Lea ....-.....------- 646 | Granuliferus (Diplodon) Dunker......... 879 Globosa (Margarita) Lea ........---.----- 530,646 | Granuliferus (Unio) Dunker............. 879 Globosa (Margaron) Lea ........-.------- 646 | Granulosa (Grandidieria) Bourguignat... 829 Globosa (Symphynota) Lea .....-..------ 530 | Gratiosa (Nodularia) Philippi.........---. 815 Globosula (Anodonta) Heude....-..-.--. ‘640 | Gratiosus (Margaron) Lea.............-.- 815 Globosus (Unio) Hanley.-........-.------- 530 | Gratiosus (Unio) Peetel--::.------2-2 22-2. 826 Globullusi(Umio)yPeetell = 2. se eee: 598 | Gratiosus (Unio) Philippi....--...-...... 815 Goascoranensis (Margaron) Lea......-..- 594 | Grateloupiana (Anodonta) Gassies....... 624 Goascoranensis (Nephronaias) Lea ......- 594 | Grateloupiana (Pseudanodonta) Bour- Goascoranensis (Unio) Lea........-....-- 594 Rulonat poss eee cease eee ee eeete 624 Gonidea ((Conrad))) 3:2 =2-5.42-22---2-- 506,514,657 | Gratus (Diplodon) Lea-...-.....-..-....-.- 886 Gontieri (Unio) Bourguignat......-.--.-- 696 | Gratus (Margaron) Lea ..........-.. ise 886 Gotteschei (Unio) von Martens ....-.-.-..-- 862 | Gratus (Unio) Lea....-.. Bee es yee: 886 Gouldianus (Unio) Ward......-.---...-.- 789 | Gravida (Grandidieria) Bourguignat .-... 829 Gouldii (Lampsilis) Lea.......-.-.-.----- 569 | Gravidus (Lampsilis) Rochebrune ..-...-. 830 Gouldii (Margaron) Lea........-.-..----- 569 | Gravidus (Margaron) Lea.............--- 830 GoulaiiT (Unio) ea) sees eset erence 569 | Gravidus (Physunio) Lea................. 830 Gowhattenensis (Parreysia) Theobald .. . 8/5) | Gravidusi(Unio)) Weare see. ssseeeeeeee 830 Gowhattenensis (Unio) Theobald.....-..- 845 | Gravis (Mya) Wood ......-....-.-.2...--- 539 Gracilentus (Magaron) Lea .......-..---- 131 | MGravasi (Uni 0) pRectelipe eerste ere eee 539 Gracilentus (Unio) Lea .........--..----- 731 | Grayana (Nodularia) Lea.........-...-.. 806 Gracilior (Lampsilis) Lea .........-...--- 559 | Grayanus (Margarita) Lea............... 807 Gracilior (Margaron) Lea .....-..-..-.--- 559 | Grayanus (Margaron) Lea..........-.... 807 Gracilionrs (Umio)nuearee aseeeeeeeeeeerer: 559 | Grayanus (Nodularia)..-.....--..-.---... 809 Gracilis (Anodon) Sowerby .....--------- 573,588 | Grayanus (Unio) Lea........--:.-.--.-2-- 806 Gracilis (Anodonta) Lea ........-.-.-...- 833 | Grayanus (Unio) Schrenck.....-......... 807 Gracilis (Dalliella) Lea ....-..-..-.-.----- 833 | Grayii (Unio) Griffith .......2.2...... eee 807 Gracilis (Lampsilis) Barnes .....-....---- 573 | Grceefianus (Diplodon) von Ihering ...--.. 875 Gracilis (Margarita) Lea ......-.--..-.--. 573 | Greefianus (Unio) von Ihering ...--...... 875 Gracilis (Margaron) Lea -.-......-.-.---- 573, 833 | Grelloisianus (Unio) Bourguignat......-. 689 Gracilis (Metaptera) Stimpson ......-..-: 5730) Greeni (Margarita) Weaieseeseeeeeeeeeee 614 Gracilisk(Miya) atoneeeceee eee eeeeee sere 573 | Greeni (Margaron) Lea: -:--5-2 222222 eee 614 Gracilis (Symphynota) Lea ............-. 73 | Greeni (Ptychobranchus) Conrad........ 614, Gracilis (Unio) Barmes\)-.22..5-2:2---5-.- 578,881 | Greeni (Unio) Conrad..............-..... 614 Graellsianus (Unio) Bourguignat ......-. 686 | Griffithianus (Margarita) Lea............ 722 Granadensis (Anodonta) Lea .....--..--- 922 | Griffithianus (Margaron) Lea ..........-- 722 Granadensis (Glabaris) Lea .......-...---- 922 | Griffithianus (Unio) Lea ................: 722 Granadensis (Margaron) Lea.........-.--- 744,922 | Grijalve (Anodonta) Morelet.-.-......-.- 926 ‘Granadensis (Unio) Conrad ....--......-- 598 | Grijalvee (Glabaris) Morelet.............. 926 Granadensis (Unio) Lea...:......-..----- 744 | Grijoloe (Anodonta) Peetel ...-........2. 926 Grandidens (Margaron) Lea ....--...---- 799 | Grcenlandicus (Unio) M6rch ..-........-.. 854 AGrancidensi@Umio)MWeatasse ae ceeeeee tee 799 | Gruneriana (Anodonta) Clessin........-- 585 Grandidieri (Unio) Bourguignat......... 846 | Guahybee (Unio) von Ihering ...... suet 894 Grandidieria Bourguignat ........... 506, 515,827 | Guaraniana (Unio) d’Orbigny ........... 884 ‘Grandidieriana (Burtonia) Bourguignat. 578 | Guarayana (Margarita) Lea...........-.. 911 Grandis (Anodonta) Say -..-...--- 633, 641, 647,648 | Guarayana (Margaron) Lea.............- 911 Grandis benedictensis (Anodonta) Lea... 644 | Guarayana (Monocondylea) d’Orbigny.. 910, 911 Grandis footiana (Anodonta) Lea........ 642 | Guarayana (Unio) Hanley ............... 911 Grandis gigantea (Anodonta) Lea ....-... 643 | Guatemalensis (Quadrula) Simpson...--. 796 Grandis leonensis (Anodonta) Lea....-.--. 643 | Gubernaculum (Unio) Reeve ...--...---. 523 Grandis (Margarita) Lea _.-_............. 642 | Guillaini (Anodonta) Recluz...........-. 857, 858 Grandis (Margaron) Lea .......-....-.--. 642 | Guillaini (Lamellidens) Recluz.......... 858 Granifera pusilla (Quadrula) Simpson ... 795.| Guillemeti (Cameronia) Bourguignat.... 910 Granifera (Quadrula) Lea ...-.........--- 795 | Guillemeti (Unio) Bourguignat ........-. 862 Graniferus (Margarita) Lea ..........-.... 795 | Gundlachi (Nephronaias) Dunker. ...... 595 Graniferus (Margaron) Lea .........-..-.-- 795 | Gundlachi (Unio) Dunker ....-........-. 595 _Graniferus (Unio) Lea..........---------- 795 | Gundlachi(Unio) Sowerby.-...-..-.----- 595 -Granosa (Unio) Bruguiere..........-.---. 878,879 | Guppyi (Ctenodesma) Smith...........-. 853 Granosus (Diplodon) Bruguiere.-.......-. 878 | Habetatus (Margaron) Lea..........-..-- 787 Granosus (Margarita) Lea.......---...--- 879 | Haconensis (Anodonta) von Ihering .... 640 INDEX. LOM Page. Page. Haconensis (Nodularia) von Ihering....- 810 | Herculea (Anodonta) Middendorff..-....-. 584 Haconensis (Unio) von Ihering....-..--- 810 | Herculea (Barbala) Peetel..............-. 584 Hagleri (Pleurobema) Frierson....-..--- 757 | Herculea (Cristariv) Middendorff........ 58h Hagleri (Unio) Frierson........-----.---- 757 | Herculeus (Anodon) Sowerby....--.-.----- 584 aon eig(Umio) i Strubellse ee ase esata 862 | Hermosus (Unio) Bourguignat.........-. 848 Hainesiana (Chamberlainia) Lea .....-.. 5875 |e Elerodest (Unio) Kobelitissee 2 s-eece nesses 690 Hainesianus (Margaron) Lea ........---- 582 | Heros multiplicatus (Unio) Peetel.......- 770 Hainesianus (Unio) Lea..-.....----...--- Do |Eeross(@Quadnula)iSayeeeaee asc aee eee 770 Haleianus (Lampsilis) Lea-......-.....-. 563,564 | Heros (Unio) Kuster. .................... 767 Haleianus (Margaron) Lea-.....-..----.-- Hous PELCTOSH (UNIO) FSayeeeeeee eee eee ee cee enere 770, 771 Haleiantisy (Wm) Weaeess seas s sae 564 | Hertwigii (Anodonta) von Ihering .-..-_.. 925 Hallenbeckii (Anodonta) Lea.-.-...----- 634, | Hertwigii (Glabaris) von Ihering........ 925 Hallenbeckii (Margaron) Lea........-.-- 726 | Heterodon (Alasmidonta) Lea ........--- 668, 669 Hallenbeckii (Unio) Lea..........------- 726 | Heterodon (Margarita) Lea............-. 669 Hamyanus (Unio) Bourguignat.....-..--- 862 | Heterodon (Margaron) Lea ..........-.-. 669 Hanleyana (Castalia) Sowerby...---.---- 864 | Heterodon (Unio) Mea 222.22. 2222-522. 669 Hanleyana (Pleurobema) Lea.......-..-- UR) || JBIGWEAROSOMED soccasaatoandasscentsengsausces Hilal HIG Hanleyanus (Unio) Lea...-..-...-.....-- 759 | Heudei (Cuneopsis) Heude............... 805 Harlandi (Anodonta) Baird and Adams . 640 | Heudei (Unio) Heude..........-.......-. 805 Harmandi (Monocondylea) Petel.....-. 836 | Hians (Alasmodon) Rafinesque ........-. 673 Harmandi (Pseudodon) Crosse and Hians (Alasmodonta) Ferussac .......--- 665 TAS CVOVET 3 As A UN aE eS oe et 836 | Hians (Anodon) Sowerby ...--.--.--.---- 915 Harmandia Rochebrune .-....-..----- 506, 515, 827 | Hians (Unio) Valenciennes ...........--- 667 Harperi (Pleurobema) B. H. Wright--..-- 759 | Higginsii (Lampsilis) Lea............---.- 540 Harperi (Unio) B. H. Wright...-......-.-.- 759 | Higginsii (Margaron) Lea...-.....--.-.-- 540 Harpethensis (Anodonta) Lea ......-.---- 6449 | PHigeinsii (Unio) heateessesaeee ee eens ee 540 Harpethensis (Margaron) Lea........---- 644 | Hildrethi (Unio) Delessert -.............- 655 Hartmaniana (Margaron) Lea ....-.-..--- 756 | Hildrethiana (Baphia) H.and A. Adams. 673 Hartmaniana (Pleurobema) Lea-.-.-.-.-- 756 | Hildrethiana (Margaritana) B. H.Wright. 673 Hartmanianus (Unio) Lea....-.....------ 7o6 | Hildrethiana (Strophitus) Conrad....___- 673 Hartmanni (Spatha) von Martens....--- 898 | Hildrethianus (Margarita) Lea........... 673 Hartwrighti (Unio) B..H. Wright .....--. 711 | Hildrethianus (Margaron) Lea......:-:.-- 673 Hastatus-(Umio) lea -.2-2.----25..---2--- 727 | Hildrethianus (Unio) Lea...--.-.......-- 673 Hauttecceuri edwardsiana (Parreysia) Einkleyat(Unio) Be Ho Wirightass se. ssse.- 710 LXOUIAWEATA I cocsuadoaseocouSooUEoSabaed 846 | Hippopeeus (Margaron) Lea...---- See 767 Hauttecceuri (Parreysia) Bourguignat -..- SiG um Eappopeeus! (Umio) eases se eee 767 Hauttecceuri (Unio) Bourguignat ......-. 846 | Hippopceus (Unio) Peetel...-.......-...-- 767 Haysiana (Scalenaria) Agassiz ........-- 520 | Hirundo (Chelidoneura) von Martens.... 906 Haysiana (Trumcilla) Lea. ---.2-222.-.--- 520 | Hirundo (Chelidonopsis) von Martens... 906 Haysianus (Margarita) Lea ...-.-....-.-.- 520 | Hirundo (Spatha) von Martens .......... 906 Haysianus (Margaron) Lea ...-.--...---- 520 | Hispanus (Unio) Rossmassler ......-..--- 686 Haysianus (Unio) Lea....-....-.--------- 520 | Hochstetieri (Unio) Dunker ...........-. 889 Hazelhurstianus (Margaron) Lea ......-- 719 | Hockingensis (Anodonta) Call.....--..--- 648 Hazelhurstianus (Unio) Lea -....-.------ 719 | Holstonensis (Margaron) Lea..........--- 747 Hebes|(Margaronm) Wea mes seec cesses 742 | Holstonensis (Pleurobema) Lea..-......-- TAh6 TSO) (What) JUN, SocdosGooosasocesadseoee 742 | Holstonia (Alasmidonta) Lea .........-.- 670 Hebetata (Quadrula) Conrad ..........-. 787 | Holstonia (Baphia) H.and A. Adams..... 670 Hebetatus (Unio) Conrad ...-..........-.- 787 | Holstonia (Margarita) Lea .......-.-....-. 670 Heermannii (Margaron) Lea..........-.- 571 | Holstonia (Margaritana) Lea...........-- 670 leerm amma) (Wm1o) Weaeene ce aeeee sees 571 | Holstonia (Margaron) Lea.-..........---- 670 Heldi (Anodonta) Kuster....-.-.-....... 833 | Holstoniana (Margaritana) Kuster......-. 670 EVelais (Wi) Ksustemace se eee aes 699 | Holstonianus (Unio) Hanley...-.-..-.--- 670 ISIE, 54 555Gn0 9006 sododdecodoenDSogccosen 503 | Holtonis (Anodonta) Lea....--.-.-------- 921 Helvetica (Anodonta) Bourguignat..... 625 | Holtonis (Glabaris) Lea ....-........-.--.- 921 Hembeli (Margaritana) Conrad.......... 679 | Holtonis (Margaron) Lea........-.------- 921 Hembeli (Margaron) Lea ..-........----- GD) || IOMNO EINES so sSoceoskocscousdacuacese 514, 620, 658 Hembeli (Unio) Conrad .....-........ cae 679 | Homsensis (Margaron) Lea .......---.--- 693 HemidoniSwainsonisses-scs-eeeeeee sees 667.4) Hlomsensis)@Umio)) eas: s35--- 2222 sce = - 693 Hemilastena Agassiz ......:...------- 506,514,673 | Hopetonensis (Margarita) Lea.......-.--- 729 Hemiodon Swainson ..-..-----..------.-- 667 | Hopetonensis (Margaron) Lea.......----- 729 Hemiodonta Swainson .-:-2.-.---2.-.-2--- 667 | Hopetonensis (Unio) Lea-........-.-.-.---- 728 Henryana- (Anodonta) Lea.....-..-....-- 635 | Horda (Anodon) Gould ...........------- 635 Henryana (Margaron) Lea .........-.---. 635 | Hordeum (Anodon) Sowerby ....-------- 633 Hepaticus (Margaron) Lea..............- 717 | Horei (Grandidieria) Bourguignat....... 823 Hepaticus (Unio) Lea....-.......-:..---- 717 | Horei (Nodularia) E. A.Smith............ 823 1018 INDEX. Page Page Houghtonensis (Anodonta) Currier...-.. 643 | Inerassatus (Mytilus) Sheppard.......... 623 Houngdaranicus (Unio) Tapperone-Can- Inerassatus (Unio) Lea..........-..-:..-. 707 CMs saad Bose sacks Geeakiaes oases cee 844 |, Incurvus (Unio) Lea .............-.------ - 692 Housatonica (Anodonta) Linsley......--- 634 | Indecora (Anodon) Heude..........-..-.- 6389 Housei (Margaron) Lea..........--.---.- 580 | Indefinitus (Margaron) Lea......-..-..-- 724 : SOWIE (Oia) ILE, cocoococecoocosdesscoe 580 | Indefinitus (Unio) Lea................--- 723 ; Houstonensis (Margaron) Lea....:....---. 782 | Indicus (Margaron) Lea ...-..--....---.- 844 ’ Houstonensis (Quadrula) Lea..........-. 782 | Indicus (Unio) Sowerby.....-........---- 844 Houstonensis (Unio) Lea............-..-. 782 | Ineptus (Margaron) Lea................-- 742 Hueti (Unio) Bourguignat................ ; 687 |, Ineptus (Unio) Leas -222 222-22 22--- ee 742 Hueti (Unio) Kobelt ..........-.----:---- 694 | Inerme (Aplodon) Spix .......-.--.------ ~ O11 Humerosus (Margaron) Lea............-- 724 | Inerme (Monocondylea) Spix ........... 911 Humerosus (Unio) Lea......-.-..-.---.-- 724 | Inflata (Anodonta) Rafinesque ....-.-... 648 Humilis (Margaron) Lea.....-..-.-:.---- 811 | Inflata (Castalia) d’Orbigny ............- 863 FEhumilisi(Umio) Mea sessencese eee 811 | Inflata (Metaptera) Conrad ............-. 574 Hupeana (Mycetopoda) Clessin.....-..--- 935 | Inflata (Mya) Batons... 2.32222 n-sececns 534 Hupeanus (Mycetopus) Clessin ......-.--. 935 | Inflata (Symphynota) Lea ............-.. _ 574 Hyalinus (Margaron) Lea ..........-...-- 663 | Inflatus (Margarita) Lea...............- 574 — Ehyallimse (Umi) plea snceneeeeeececercces 663 | Inflatus (Margaron) Lea ........-..--.-.- 574 Hydianus (Lampsilis) Lea ......-..-.-.--- 536 | Inflatus (Unio) Barnes ........-......--s- 534 Hydianus (Margarita) Lea........-.--.-- 536 | Inflatus (Unio) Conrad .......-.........- 568 Hydianus (Margaron) Lea .......--.----. 536) || Imflatus|(Umi0) Han Gye assesses 574 Hydianus (Unio) Kuster .....-..-...--.-- 534 | Infrarostatus (Unio) Schepman.......... 581 Ehycianus) (Unio) Mearseces-ceassseeceeeee 586 | Infucata (Quadrula) Lea -___............. 783, 784 Hygapanus (Nodularia) Bottger ......... 827 | Infucatus (Margarita) Lea ........ aces 784 Hygapanus (Unio) Bottger............---. 827 | Infucatus (Margaron) Lea ............-5- 784 Ehyleea (Unio) id Oxrbignyes-eseee eee eee 884 | Infucatus (Unio) Conrad..........--..-.- 784 - Hyleus (Diplodon) d@’Orbigny -....-...-. 88), Infulgen's (Unio) Wears. sees eeee 724 Hyleus (Margaron) Lea .........---.-... 884 | Infuscus (Unio) Lea......-....-.--.-.--.- 724 Hivyriaplamarckaereseasececeesceeeree 506,515, 868 | Ingallsiana (Nodularia) Lea ...........-- 816 la Bebo) Srboa} NO) No scscnecoesocoaasaconsce 872 | Ingallsianus (Margaron) Lea ..........-. 816 FLY TIAN ese iageme. acces ee cone emele eee 501,515, 806 | Ingallsianus (Unio) Lea.........-.-...--. 816 Hyridella Swainson .....................- 888 | Inornata (Anodonta) Anthony .....-.... 644 Hypsiprimnus (Parreysia) von Martens. . 849 | Inornata (Anodonta) Kuster...........-- 625 Hypsiprimnus (Unio) von Martens...._.. 849 | Inornata (Nodularia) Lea.............--- 813 Hyriopsis Conrad..........-.-. 505, 506, 511,514,578 | Inornatus (Margaron) Lea.....-...---... «813 Tanthinus (Unio) Philippi ............... 881 | Inornatus (Unio) Lea........-....-.----- 813 Icterinus (Unio) Conrad ...............-. 727 | Inornatus (Unio) Reeve.............-..-- 814 Idgi (Unio) Bourguignat ...-......-...... 862 | Inoscularis (Anodon) Gould ..........--- 837 Idrina (Anodonta) Spinelli............... 624 | Inoscularis (Margaritana) Petel ......... 837 TheringellayPilsbryescseeceseceeeee ce 507,515,913 | Inoscularis (Margaron) Lea...........--- 837 Theringi (Anodonta) Clessin ...........-.. 919 | Inoscularis (Pseudodon) Gould .......--. 837 Iheringi (Glabaris) Clessin .......-..-.--- 919 | Insignis (Grandidieria) Bourguignat...-. 828 Iheringi (Unio) Clessin..................- 894 | Insolidus (Unio) Lea..................--. 664 Theringi (Unio) B. H. Wright.....-....... 712,895 | Instructa (Pleurobema) Lea ............- 756 Mquit(Wnio) Solevletso ss jase eee ee 862 | Instructus (Margaron) Lea..........-..-. 756 Imbecillis (Anodonta) Say ......-..-..--.- 634,635 | Instructus (Unio) Lea.................--- 756 Imbecillis (Margaron) Lea............--. 635 | Insularis (Dalliella) Drouet ....-....-..-. 83h Imbricata (Anodonta) Anthony ......... 643 | Insularis (Pseudodon) Drouet...........- 834 Imbricatus (Unio) Mérch ......_________- 607 | Insulsus (Margaron) Lea.........-...-..- 716 Imperialis (Unio) Morelet..........-..... 582 | Insulsus (Unio) Lea .-....-..2.......-..-- 716 Implicata (Anodonta) Say......--.--..-. 633 | Intercedens (Margaron) Lea............. 548 Implicata (Margaron) Lea............... 633 | Intercedens (Unio) Lea...........--..--- _ 548 Impressa (Alasmodonta) Anthony....... 670 | Intermedia (Anodonta) Lamarck.....-... 623 Impura (Anodonta) Say ...-.....-.---.-- 635 | Intermedia (Quadrula) Conrad .......... 775 Inzequalis (Unio) Rochebrune..........-.. 862 | Intermedius (Margaron) Conrad........-. 779 Inequivalvis (Anodonta) Lea............ 922 | Intermedius (Unio) Conrad...........-... 775 Ineequivalvis (Glabaris) Lea...........-.- 922 | Intermerata (Anodon) Heude........-..- 639 Inequivalvis (Margaron) Lea..........-.- 922 | Interrupta (Truncilla) Agassiz........... 518 Incarnata (Grandidieria) Bourguignat. -. 830 | Interruptus (Margarita) Lea ............- 541 Incarum (Anodonta) Philippi-.....-..... 921 | Interruptus (Margaron) Lea ............. 541 Inearum (Glabaris) Philippi ....-......-- 921 | Interruptus (Unio) Conrad............--- 518 Incerta (Anodonta) Lea___......-...----- 635 | Interruptus (Unio) Lea ..-.2.....-------: 541 Incerta (Margarita) Lea......-.-...------ 635 | Interruptus (Unio) Say .-.-.....-.-. secs Sei Incertus (Ptychorhynchus) Simpson....- 851 | Interventus (Pleurobema) Lea....... eer 753 Incrassatus (Margaron) Lea......---.---.- 707 | Interventus (Unio) Lea................-- 793 Imusitatis) (Wmio) Leae.--- 2. --2-224-<- 5-2 Inusitatus (Margaron) Lea.............-. Inusitatus (Unio) B. H. Wright ImivenMustus) (Wimio) bea sre asia se) sial- Involuta (Nodularia) Benson............ Involutus (Margaron) Lea Involutus (Unio) Benson Iridescens (Unio) Conrad Tridina Lamarck IDRKCIINES Soe Sad atae ae eteO ne Gate nese Ganeae Tridinea (Solenaia) Heude Iridineus (Mycetopus) Heude.........--. Trisans (Anodon) Anthony..-.....---.---- Tris (Lampsilis) Lea.................. ealrisn (Mame ariita) SSCA eras ils eer se irish(Mangarom)) Weae. ss. 4-cs--4-4-ceseeee Tris (Unio) Lea Trrasa (Pleurobema) Lea Irrasus (Margaron) Lea Irrasus (Unio) Lea Irregularis (Anodon) Heude Irrorata (Cyprogenia) Lea Trrorata Pusilla (Cyprogenia) Simpson... Irrorata (Theliderma) Swainson........- Irrorata (Unio) Deshayes Irroratus (Margarita) Lea.........-----.. Irroratus (Margaron) Lea TAROT AES) (WA) Ike so sesoosoecsasc. Irwinensis (Unio) Lea Isocardioides (Iheringella) Lea Isocardioides (Margaron) Lea Isoecardioides (Plagiodon) Lea Isocardioides (Unio) Sowerby.....-....-- Jacobeus (Unio) Philippi Jacquemini (Unio) Dupuy Jaculus (Unio) Rochebrune.............. Jamesianus (Margaron) Lea Jamesianus (Unio) Lea Japanensis jokohamensis von Ihering Japanensis (Margaron) Lea Japanensis (Nodularia) Lea........-..... Japanensis (Unio) Lea Japanensis (Unio) Kobelt...... ......--. Japonica (Anodonta) von Martens....--. Jaspideus (Margaron) Lea Jaspidea (Monocondylea) Hupé Jaspides; (Umio)=Hupe assent see eee Jauberti (Unio) Locard Javana (Anodon) Sowerby.....-...------ Javanus (Margaron) Lea.............---- Jayanus (Unio) Lea Jayanus (Margaron) Lea.........--.-.--- Jayanus (Unio) B.H. Wright.......-..--- Jayensis (Margarita) Lea Jayensis (Margaron) Lea..........---.--. Jayensis (Unio) Lea....-.....----2--.---- Jeffreysianus (Diplodon) Lea Jeffreysianus (Unio) Lea.............---- Jejunus (Margarita) Lea Jejunus (Margaron) Lea Jejunus (Unio) Lea Jenkinsianus (Lamellidens) Benson Jenkinsianus (Unio) Benson Jewittiana (Anodonta) Lea (Nodularia) Jewittianus (Glabaris) Lea...........-... . INDEX. Page. 729 | Jewittii (Anodonta) Lea ................. 729 | Jewittii (Margaron) Lea........-...-..... TPE) |) VENA (OpovOy) IL@H Soest oesdonoosesoudeocu 725 | Jickeli (Nodularia) Simpson ..........-.. 817 | Juliani (Nodularia) Rang................ Sime duliamiy (Unio) sRangese. eee es eee eee 817 | Johannis (Margaron) Lea................ 744 | Johannis (Pleurobema) Lea.............. 902m eJohannish(WUmio)sbeaeeesssen-cneeeee reese 501 | Johnstoni (Pseudavicula) Smith ......... 657) Johnstonin (Unio); Smithers s.e eases 607 | Jolyi (Unio) Kobelt .......-...-..-....... 633) Jonesii: (Margarom) Lear =-e-= 2-1-2 HR. BisX3) |) Ai@avesul (Wav) UC So ocsccougcauasaoooconKe 5592 | Jordanicus (Margaron) Lea.........----. 552 | Jordanicus (Unio) Bourguignat........-- 552 | Joreti (Anodon) Heude .............-.-.. 756,757 | Josseti (Cameronia) Bourguignat ......-- 756 | Josseti (Unio) Bourguignat ..........--.. 756 | Jouberti (Burtonia) Bourguignat.......-.. 638 | Jouberti (Cameronia) Bourguignat ....-. 610 | Jouberti (Moncetia) Bourguignat........ 610 | Jouberti (Mutela) Bourguignat ........-. 610 | Jouberti (Unio) Bourguignat -.......-... 610 | Jourdyi (Anodonta) Heude.............. 610 | Jourdyi (Brazzea) Bourguignat........-.. 610 | Jourdyi (Nodularia) L. Morlet........... 609,775 | Jourdyi (Unio) L. Morlet.............-..-. 724 | Kallethensis (Unio) Peetel................ O13n Katherine: (Unio) Pledasn asec eee. 913 | Keinerianus (Margaron) Lea........-..-.. 913 | Keinerianus (Unio) Lea............---... 913 | Kelletti (Anodon) Sowerby.....-.-----.-- 881 | Kleiniana (Quadrula) Lea ..........----- 699 | Kennerlyi (Anodonta) Lea.............-. 862 | Kennerlyi (Margaron) Lea..........-.-.. 740 | Kennicottii (Anodonta) Lea.............. 740 | Kennicottii (Margaron) Lea.........-.--. Keraudreni (Margaron) Lea........-..--. 810 | Keraudreni (Nodularia) Eydoux.......-.. 809 | Keraudreni (Unio) Eydoux.............- 806,809 | Kingi (Medionidus) B. H. Wright........ 809 | Kingi (Unio) B. H. Wright-.........----. 810 | Kirki liederi (Spatha) von Mariens...... 640 | Kirki (Spatha) Ancey.-........-...--..--. 912 | Kirki (Spathella) Ancey ................- 912. | Kirkii (Margaron) Lea.:..............--- 912 | Kirkii-(Parreysia) Lea ..............-..-- GOON Kain kai (Umio)mlbea tere rises cee sice 588 | Kirtlandiana minor (Quadrula) Simpson. 818 | Kirtlandiana (Quadrula) Lea..........-. 817 | Kirklandianus (Lampsilis) B. H. Wright . 714 | Kirtlandianus (Margarita) Lea ........-.- 714 | Kirtlandianus (Margaron) Lea........--. 714 | Kirklandianus (Unio) B.H. Wright-....-.- 714 | Kirklandianus (Unio) Hanley .......-.-- 713 | Kirtlandianus (Unio) Lea..-.. soceau seas 891 | Kisonis (Unio) Kobelt........--.--------- 891 | Kleiniana (Quadrula) Lea --.-.-.--..---- 725 | Kleinianus (Margaron) Lea....-...-.---- 725 | Kleinianus (Unio) Kuster........-.------ 725 Kdeimianus (Unio) bears een eo = et 857 | Kobelti (Anodonta) von Ihering.....-.-.. S57 le Kobeltil(Umio)) Rolleies are sca. eeseree a= 927 | Koseretzi (Unio)-Clessin:........-...----- g27 | Kouangensis (Quadrula) Simpson ....... 861 692 sl a7 S17 aI on xe 1020 INDEX. Page. Page Kraussii (Margaron) Lea........-....--.- 867 | Lardelianus (Unio) Pecchioli ............ 684 ‘Kerauissiin (Unio) sWeas-eeeeee setae ere eee 867 | Largillierti (Lampsilis) Philippi ......... 577 Ksibianus (Unio) Mousson .......--...--- 692 | Largillierti (Unio) Philippi .....-........ 577, 744 Kullethensis (Margaron) Lea --.--.-.---- 695 | Lasmabrachys (Unio) Rafinesque ....-... 744 Kullethensis (Unio) Lea ...........---.--- 695 | Lasmigona Rafinesque ...............-.-. 664, 673 Kullinthensis (Unio) Petel...........-.. 695 | Lastena Rafinesque ............-- 506, 514, 654, 933 Kunenensis (Nodularia) Mousson......-- 824 | Lata (Anodonta) Rafinesque...........-. 654 Kunenensis (Unio) Mousson ..........-.- 824 | Lata (Lastena) Rafimesque ............... 654 Labacensis (Unio) Rossmassler ....-.---- 697 | Lata (Leptodea) Conrad..........-.....-- 654 Lachrymosa lunulata (Quadrula) Pratt .. 777 | Lateralis (Obliquaria) Refinesque......-. 744 Lachrymosa (Quadrula) Lea..........--- 776,778 | Latialata (Hyria) Sowerby ....-...-..--.- 869 Lachrymosus (Margarita) Lea -.......--- 776 | Laticostasus (Margaron) Lea..........--- 769 Lachrymosus (Margaron) Lea.......-..--- 776 | Laticostatus (Margaron) Lea............. 769 Lachrymosus (Unio) Lea.........--.----- 775 | Laticostatus (Unio) H.and A. Adams.... 769 Lacteolus (Unio) Lea.....-.-..--..------- 873 | Laticostatus (Unio) Lea......:........... 769 Lacustris (Anodonta) Lea..-...-....----- 632 | Lati-marginata (Anodon) Catlow and Lacustris (Margaron) Lea ........--.----- 632 IRQEWS ocbepocdoesasséscaéonadcucdedoseso 917 Lacustris (Spatha) Simpson ..........---. 898 | Latiquadrata (Castalia) Sowerby .....-... 864 bea ategEy (hob) SEAY 545 boosocsansasaseces 600 | Latiradiatus (Unio) Conrad .............. 541 Levirostris Simpson.......---..---------- 894, | Latissima (Unio) Rafinesque.....-....--- 545 Leevirostris (Unio) Benson .........--.-.- 842 | Latissimus (Unio) Sowerby ....-.-.--..-- 527 Leevissimus (Lampsilis) Lea........--.--- 574 | Lato-marginata (Anodonta) Lea.......-. 917 Levissimus (Margarita) Lea......_.-_---- 574 | Lato-marginata (Margarita) Lea......... 917 Leevissimus (Margaron) Lea.........---+- 574 | Lato-marginata (Margaron) Lea.......-.- 917 Leyvissimus (Symphynota) Lea .....-..--- 574 | Lato-marginatus felix (Glabaris) Pilsbry- 917 Levissimus (Unio) Conrad.......-..----- 574 | Latus (Margaron) Lea ...............---- 728 Lamarckianus (Margaron) Lea .......--- 610 | Latus (Unio) Conrad -...-......-...-...-- 654 Lamarckianus (Unio) Lea .......--.-.--. GlOM | batuss (Unio) sweat esssea see eeee eee eeeeee 728 Lamellatus (Lamellidens) Lea ...---....- 856 | Lauta (Anodonta) von Martens.....-...- 639 Lamellatus (Margarita) Lea...-......-..-. 856 | Lavigerina (Brazzea) Bourguignat ....-- 907 Lamellatus (Margaron) Lea....-....-.--. 856 | Lavigerina (Burtonia) Bourguignat ..... 577 Lamellatus (Unio) Hanley and Theobold. 581 | Lavigerina (Cameronia) Bourguignat.... 910 Lamellatus (Unio) Lea..:.......---..---- 856 | Lavigerina (Mutela) Bourguignat........ 906 Lamellatus (Unio) Sowerby.....-..--.--- 857 | Lavigerina (Spatha) Bourguignat........ 901 Lamellidens Simpson .......- 506, 508, 515, 854,858 | Lavigerinus (Unio) Bourguignat......... 862 Laminata (Anodonta) Rochebrune ...--- 6480 la wii (Wmio) ea ese neers eee 746, 747 Lamphorhamphus............-.--.------: 815, 862 | Lawleyanus (Unio) Gentiluomo....-..... 683 Lampreyanus (Margaron) Lea ......-.... 804 | Layardii (Unio) Lea....2....-...-...-.--- 856 Lampreyanus (Shistodesmus) Baird and azarusi(Um10) Wereesse tees sae eeeeee eee 732 ANC AIS ene ele a NC sans oe a ea OUR 804 | Lazarus (Unio). Sowerby ....-.--...-..--- 704 Lampreyanus (Unio) Baird and Adams.. 803,804 | Leai cinnamomicus (Unio) Heude....... 802 JOGA ONKOL Y DN) 4 soocdaseddedadooucotadsicos 501 | Leai (Diplodon) Simpson ...-........-..-- 876, 881 Lamprotula Simpson .......-.:..-.......- 796 | Leai leleci (Quadrula) Heude.-........--. 801 amipsilishRahinesquesseseeeseseeeeee cence 505, | Leai leleci (Unio) Petel..........-...-..- 801 506, 511, 514, 526, 578, 589, 592,828 | Leai (Margarita) Lea.................-... 801 ManceolariaiCoura dares erase eee eee 806,811 | Leai (Margaron) Lea..........--........- 801 Lanceolata (Arconaia) Lea........--:--.- 860 | Leai (Quadrula) Gray......-..-.-----.--- 801, 802 Lanceolata (Hyria) Lea :...........---.-- 860 | Leai (Unio) Gray.......-2.-.-.--2----2--- 801 Lanceolata (Triquetra) Lea ....-.......-. 859, 860 | Leaii (Iridina) Sowerby.........-..-.----- 908 Lanceolatus (Margarita) Lea....-..--..-- 734, | Weeaii (Platinis) eae easseceeeeeeeeeeeee 908 Lanceolatus (Margaron) Lea....-..-..-..- 734 | Leaii (Pleiodon) H. and A. Adams.....--. 908 Lanceolatus (Unio) Lea........--.--..... 734 | Lechaptoisi (Nodularia) Ancey ........--. 823 Landanensis (Unio) Schepman ....-....-- 823 | Lechaptoisi (Unio) Ancey.......-....---- 823 Landbecki (Unio) Philippi-............-.. 881 | Lecontianus (Margarita) Lea .........--. 733 Landeaui (Cameronia) Bourguignat -...-. 909 | Lecontianus (Margaron) Lea ........-...- 733 Landeaui (Pleiodon) Bourguignat -..-.-... 909 | Lecontianus (Unio) Lea.....-.......----- 537, 733 Languilati (Lepidodesma) Heude.......-. 587 | Ledouxliana (Nodularia) Charmes.....-. 812 Languilati (Unio) Heude ..............-. 586,587 | Ledouxlianus (Unio) Charmes.........-. 812 Languilatus aligerus (Unio) Heude...-.-. 587 | Leeai (Unio) Hanley.........-.....-..--- 801 Laosensis (Anodonta) Fischer.......-..--. 629 | Legrandi (Unio) Petterd................. 891 Laosensis (Margaritana) Lea.-..-.....--- 678 | Legumen (Anodonta) von Martens...... 932 Laosensis (Margaron) Lea....-..-..------ 678 | Legumen (Glabaris) von Martens........ 932 aosensis7(Umio) lean erect es eee 678 | Legumen (Mutelina) Rochebrune .....-- 906 Lapidosus Simpson ...-....---...--------- 700 | Leguminaia Conrad.............- 506, 5138, 514, 651 Lapidosus (Unio) Kobelt..............--- 700 | Lehmani (Unio) S. H. Wright.........-..-- 715 Lapillus (Unio) Say .........-.........--- 525 Leibii (Margaron) Lea ............-...---- 601 INDEX. 1021 Page Page. Leibii (Obovaria) Lea.............--....- 600,601 | Liebmanni (Unio) Philippi .............. 712 ILe@rlarol (redo) ILE) coooseadabaoccacouacecas 601 | Liederi (Nodularia) von Martens .......- 82h HC ANG Ai oasis asain d baie weiner 501, 507,515,914 | Liederi (Unio) von Martens.............- 824 weiromian (Unio) Bensoneca-q2s-cese. eee. 811 | Lienosus constrictus (Unio) Conrad ..... 551 Hele ci¢(Winio) PHeuderese-a-eeeeee eee eae 801 | Lienosus (Lampsilis) Conrad...........-. 547 Lemsleyi (Anodonta) Morelet...........- 588 | Lienosus (Margarita) Lea................ 547 Lemsleyi (Pilsbryoconcha) Morelet....-- 588 | Lienosus (Margaron) Lea...............- 547 ILE Wiotell AGeyaNsoIe) Soassooccaooeesoeqnacer 903 | Lienosus unicostatus (Lampsilis) B. H. Meniors@Margarom)Wuea)....25- 22. ssseess2< 518 Wirigh tee sensaaackinaaeycco aasteene 547 Heniorl(runeila)) weasas-.- ae 518") Lienosus) (Unio) Conradesee=-2-22--5 22-4. 547 IL@mulow (Wi) IWSRy songs oocaosacsoseeuunes 518 | Ligamentina (Unio) Lamarck ........... 539,877 Lenis:(Unio) Conrad .........-....-..---- 527 | Ligamentinus gibbus (Lampsilis) Simp- IL@rauls| (Wat) IU socoscooedubGbcoaaecocess 518 ROR SOR TO Or AC BAG ou cone ee CEE naee 510 Lens depygis (Obovaria) Conrad........- 601 | Ligamentinus (Lampsilis) Lamarck ..... 539 sensi @Wargaritta’)) Weay sae esse oe sesarseiee 600 | Ligamentinus (Margaron) Lea.........-- 539 hensyMargvarom) lea ss2.-5- 2c ceo l ee 6008 | Mig atusk(Unio)ucarsae ase senee eee ee 724 wens (Obov aria), Wea -eecsece ae see ceees 600 | Ligula (Unio) Mousson .............----- 862 ENS SUM PSOM eee ici aeclel-ise clsinie(aisieieriseie 831 | Lima (Nodularia) Simpson .....--.--.---- 820 ILGIAGS (Wiad) IVES) Soscosusoodesoceuonsooace 600,601 | Limatulus (Margaron) Lea........-..--.. 716 Lenticularis (Anodonta) Lea ........-.-. 922 | Limatulus (Unio) Conrad ....-........... 716 Lenticularis (Margaron) Lea............- 922| | Limensis (Unio) Kuster ...-..-....-.----- 881 Lenticularis (Pleurobema) Lea .......... Mol |) ibphanwneer) JOVI op annaacsossucocdoabacaccane 620, 679 Lenticularis (Unio) Lea.................. 761 | Limnoica (Anodonta) d’Orbigny .....-..- 921 Lentiformis (Aplodon) von Ihering...-... 913 | Limnoica (Glabaris) d’Orbigny........-- 921 Lentiformis (Margaron) Lea............- 913 | Limnoica (Margarita) Lea ........-...... 921 Lentiformis (Monocondylea) Lea ..-.-.- 912 | Limnoica (Margaron) Lea.........-...... 921 Leonensis (Anodonta) Lea.........--.--- 643 | Limosa (Anodon) Heude............-.--- 638 Leonensis (Margaron) Lea....-.......--- 643 | Limosus (Unio) Kobelt.........-...--.... 683 Leopoldvillensis (Burtonia) Putzeys....-. 577. | Limosus (Unio) Nilsson ......-...----..-.- 682 Leopoldvillensis (Parreysia) Putzeys..-... 845,846 | Lincecumii (Margaron) Lea ..-.......... 768 Leopoldvillensis (Pseudospatha) Putzeys Gp |\\ Waboveexeobanvht (Open) IUEEY Ssoceoacacocouccse 768 Leopoldvillensis (Unio) Putzeys........- 846 | Lindsleyi (Margaron) Lea..-....--..-..-- 542 Leotandi (Anodonta) Guppy. ...-.-..----- 929 | Lindsleyi (Unio) Lea..........--.....-..- 542 Leotandi (Glabaris) Guppy .........--.-- 929 | Lineata (Anodon) Heude..-..-....-....-- 638 Leotandi (Margaron) Lea....-..........- 929 | Lineata (Unio) Valenciennes ..........-- 536 Lepidior (Diplodon) Lea................- 880 | Lineatus (Margaron) Lea.........-.-.... 528 Lepidior (Margaron) Lea ........--.------ 880 | Lincecurii (Unio) Petel.-.......-......... 768 Lepidodesma Simpson ............--- 506,514,586 | Lineatus (Unio) Lea ......:......-......- 528 Lepidus (Margaron) Lea............-..-- 561 | Lineolata (Obliquaria) Rafinesque..-..-- 744 Lepidus (Unio) Gould..........-......... 561 | Lineolata (Plagiola) Agassiz ............- 604 Wepidusy(Wmio) Leas eeeeesceia-aciee ee 880 | Lineolata (Unio) Say..-.....--.-.--.----- 604 Lepsii (Spatha) Jickeli..................- 896 | Lineolatus (Unio) Conrad...............- 604 Lesleyi (Margaron) Lea...........-.....- 748 | Lingueformis (Anodonta) Morelet ....-. 587 Lesleyi (Pleurobema) Lea ............--- 748 | Lingueeformis (Margaron) Lea.......-.-- 554, 587 Ibesieval (What) 12k soocaebeocoooousoscaaoe 748 | Lingueeformis (Pilsbryoconcha) Morelet- 587 Lessoni (Diplodon) Kuster ............--. 890 | Linguseformis (Unio) Lea ..........-...--. 554 Lessoni Unio) Kuster ...............----- 890 | Lingulata (Anodonta) Hupe ........-.--- 929 Lesueurianus (Margaron) Lea ..........-. 792 | Lingulata (Glabaris) Hupe.-.............- 929 Lesueurianus (Unio) Lea ............-..-. 792 | Lingulata (Margaron) Lea..............- 929 Leptodea (Rafinesque) Conrad.........-. 654 | Lingulatus(Rectidens) Drouetand Chaper 854 Leptodon (Lampsilis) Rafinesque.....-..- 575 | Lingulatus (Unio) Drouet and Chaper ... 854 Leptodon (Leptodea) Conrad ...........- 575 | Linneana (Anodonta) Lea .............-- 646 Leptodon (Symphynota) Ferussac ......-. 575 | Linneana (Margaron) Lea ....-..--.....- 646 Leptodon (Unio) Rafinesque...........-- 57a |e lita (pleurobema) leas cna eieeissne 761 Letourneauxiana (Pleiodon) Bourguig- Lithophagus (Unio) Ziegler..........-.-- 812 IMAL, soadncsoneocas gonauodeaguug eaSuSsHcSS 909 | Litoralis (Margarita) Lea ........-....--- 691 Letourneuxi (Anodonta) Bourguignat... 627,649 | Litoralis (Margaron) Lea ..........-..--- 691 Letourneuxi (Colletopterum) Bourguignat 649 | Litoralis (Unio) C. Pfeiffer ............-... 678 Letourneuxi (Unio) Bourguignat.......-. 686 | Litoralis umbonatus (Unio) Rossmiassler. 691 Letourneuxi (Unio) Kobelt......-....... 692 | Littoralis acarranicus (Unio) Kobelt....- 691 Letourneuxiana (Chambardia) ....-....- 902 | Littoralis minor (Unio) Rossmiissler..... 691, 698 Levigata (Unio) Rafinesque...........--- 744 | Littoralis pianensis (Unio) Kobelt.....-- 691 Lewisii (Anodonta) Lea.............-.--- 642 | Littoralis (Unio) Lamarck. ...... 690,691, 692, 693 Lewisii (Margaron) Lea............-..... 755 | Litturata (Anodonta) Hupe..........-.-- 931 Lewisii (Unio) Lea... -. ec ccs 642,755 | Lituratus (Glabaris) Spix........-...----. 931 Liebmanni (Margaron) Lea.............. il Di lelel bush (Omi ©) Msc aersecersice seleleleieiciaieloleteieieierer= 761 1022 INDEX. Page ‘ Page Livida (Anodon) Heude.........-...-..--- 638 | Lutulentus (Unio) Gould............-.... 892 Lividus (Lampsilis) Simpson.........---- 571 | Luxata (Anodonta) Kuster..............- 625 Livingstonensis (Burtonia) Bourguignat . 578 | Luxurians (Unio) Kuster ....-....-..-... 699 Livingstonensis (Margaron) Lea ....-...- 729 | Luynesi (Unio) Locard.....-...........-. 693 Livingstonensis (Pseudospatha) Bour- Lycicus (Unio) Rolle..................... 692 (aur leeenet ede Aakasnacousconmeanuccade 578 | Lyonii (Margaron) Lea......-..........-- 751 Livingstonensis (Unio) Lea ...........--. 729 | Lyonii (Pleurobema) Lea ........-...--.. 751 Lobata (Unio) Philippi-.............--..-- 686) aay onlin (Umi) peameasseeeeeeeeee eerie 751 Locardi (Gabillotia) Servain............. 650°) Akbymmrum'\Okem) <2 eye eee sae 679, 680 Locardi (Leguminaria) Simpson .......-.. 652,653 | Lymnoica (Anodonta) Chenu............ 921 Locardiana (Cameronia) Bourguignat .. . 910 | Mabiilei (Pseudodon) Rochebrune....... 840 Locardiana (Chambardia) .......-----.-- 902 | Mabillei (Spatha) Jousseaume ........... 897 Locardiana (Grandidieria) Bourguignat. 830 | Mabilli (Mutelina) Rochebrune.......... 906 Locellus (Margaron) Lea..........-.----- 876 | Mabilliana (Cameronia) Bourguignat ... 910 Locellus (Diplodon) Lea......-...-...---- 876 | Maccarthianus (Unio) Kobelt............ 692 ocellus\(Unio)) ea. -222-4---ses-- eee 876 | Maccarthyanus (Unio) Bourguignat ..... 687 Hongina; (iridimay) Wears sess sere t= 929 | Macer (Margaron) Lea................... 728 Longinus (Anodon) Spix.....-....------- 929) | Miaicers (Wino) Weak see eescmerceeseeceere 728 Longinus (Glabaris) Spix.............---- 929 | Macilenta (Anodonta) Morelet..........- 624 Longinus (Mycetopus) Clessin ........--- 929 | Macilentus (Unio) Benson ..............- 813 Longirostris (Unio) Rossmiissler ........- 682 | Macmurtrei (Margarita) Lea............- 908 Longitudinatus (Unio) Anton...........- 862 | Macmurtrei (Pleodon) Conrad........... 908 Longus (Unio) Philippi .-..........------ 882 | Macnielii (Nephronaias) Lea...........-. 593, 594 ss Loomisi (Pseudodon) Simpson ........--- 8£0| Macnieliis (Unio) sleaseeeeeeaeee eee 593 3 iorteti (Umio) Kobeltie sss.) .5-44-eee 690 | Maconensis (Margaron) Lea.............. 736 Morteti; (Unio) Wocard sessed 688 | Maconensis (Unio) Lea................-.- 736 : Lourdelli (Nodularia) Bourguignat ...--. 26 | Macrodon (Margaron) Lea............... 605 % Lourdelli (Unio) Bourguignat......-..-.-- 826 | Macrodon (Plagiola) Lea................. 605 : Lucasi (Anodonta) Deshayes..........--- 27 | Macrodon (Unio) Lea .................... 605 . Lucasii (Margaron) Lea........---...-.-.- 627 | Macropterus (Unio) Dunker.............. 894. Lucida (Anodonta) d@’Orbigny .......---- 921 | Macula (Mytilus) Sheppard .............. _ 623 Lucida (Anodonta) Heude...........--.- 640 | Maculata (Pleurobema) Conrad.......... 7L6 Lucida (Glabaris) d’Orbigny .....-...---- 921 | Maculatus (Margarita) Lea .............. ‘746 Lucida (Margaron) Lea-..............-.-- 921 | Maculatus (Margaron) Lea...............- 746 Lucidus (Margaron) Lea...........-....- 716 | Maculatus (Unio) Conrad................ 746 Mucidus\(Unio) Mea e-tee-see see eee eee 716 | Madagascariensis (Unio) Sganzin........ 862 Ludovicianum (Diplodon) Rochebrune. - 862 | Magnifica (Anodonta) Clessin ........... 584 Lugens (Nodularia) Drouet and Chaper.. 818 | Magnifica (Anodonta) Lea............... 637 Lugens (Unio) Drouet and Chaper....-..-. 818 | Magnifica (Burtonia) Bourguignat....... 7 Baa Lugubris (Anodonta) Say ....-.........-- 648 | Magnifica (Margarita) Lea..............- 637 Lugubris (Margarita) Lea...........:...- 715 | Magnifica (Margaron) Lea............... 637 Lugubris (Margaron) Lea...............- 715 | Magnifica (Symphynota) Lea............ 637 Lugubris (Unio) Kuster .........2...-2-.-- 723 | Magnificus (Unio) Sowerby .............. 585 Mugwbriss (Unio) Wears ses a-sseeceee cece 715 | Mainwaringi (Unio) Nevill .............. 856 ILD MlovENS ((Opaulo)) SEY Sondsoecaucocadcoooce 568 | Maltzani (Unio) Kuster .................- 683 Eunulatus) (Unio) Pratt 2535-22 4-- eee. 777 | Manca (Unio) Lamarck .................. 682 Lunulifer (Margaron) Lea .............-- 689) | Manca (Unio): Maillleteeeaecreeeeeeseseeee 699 Lunulifer (Unio) Bourguignat -.........- 689 | Mandarinus (Unio) Lea.................. 815 Luridus (Margaron) Lea .........-......- 705 | Mandelayensis (Unio) Theobald ......... 843 Wuriduss (Unio) PWeayeens-ceeeceececae es 705 | Mandinguorum (Unio) Rochebrune ..... 826 Lurulenta (Anodonta) Morelet..........- 647 | Manhoti (Pseudodon) Conrad............ 839 Lusitana (Anodonta) Morelet ............ 623 | Manubius (Margaron) Lea............... 740 Tutenss (Umi) eibeae ate eee nena 841 | Manubius (Unio) Gould.................. 740 Luteola (Anodonta) Lea ................- 920 | Manubrius (Unio) Petel ..............-.- 740 Luteola (Margaron) Lea ......-.-.......- 920 | Marcens (Unio) Hanley and Theobald... 843 Luteola (Unio) Lamarck .......0.....-.--- 534 | Mardinensis chantrei (Leguminaia) Lo- Luteolus (Glabaris) Lea........--.--..... 920 CALE! 52 joss sn cn eae ee eee Eee 651 Luteolus (Lampsilis) Lamarck .........-- 53), | Mardinensis (Leguminaia) Lea ...... 651, 652, 653 Luteolus (Margarita) Lea ......-......... 634 | Mardinensis (Margaritana) Clessin ...... 651 Luteolus (Margaron) Lea .........--..--- 534 | Mardinensis (Margaron) Lea......-...... 651, 695 Luteolus rosaceus (Lampsilis) De Kay... 535 | Mardinensis (Monocondylea) Lea........ 651 Luteolus (Unio) Sowerby...........-...-- 39) | Mardinensis (Unio) Wearssse-easneee os 695 Luteus (Margaron) Lea ......---...------ 842 | Margaritana Schumacher ..-. 501, 506, 518, 514, 674 uteus\ (Unio) Wea wee sce eee ace : 841 | Margaritifer minor (Unio) Rossmiissler .. 675 Lutulentus (Diplodon) Gould.....2.....-. 892 Margaritifer (Unio) KUStCL Ja scneeseee ees 676 Lutulentus (Margaron) Lea.............- 892 | Margaritifera (Alasmodonta) Conrad .... 675 INDEX. 1023 Page. Page. Margaritifera (Baphia) H.and A. Adams. 675 | Mauritianus (Unio). Lea.................. 833 Margaritifera (Baphie) Meuschen......-. 675 | Menielii (Anodonta) Anthony ........... 644 Margaritifera (Margarita) Lea........... 675 | Mearnsi (Lampsilis) Simpson ............ “564 Margaritifera (Margaritana) Linneus ... 513, | Mearnsiana (Anodonta) Simpson ........ 630 674, 677, 678,741 | Mecklenbergensis (Margaron) Lea....... 723 Margaritifera (Margaron) Lea ........--- 675 | Mecklenbergensis (Unio) Lea............ 723 Margaritifera (Mya) Linnzeus........ 674, 675,676 | Medellinus (Margarita) Lea ............. 592 Margaritifera (Unio) Draparnaud........ 675 | Medellinus (Margaron) Lea.............. 592 IMSS ATOMEWCA eet ene ec ccise ciscceesececece 501 | Medellinus (Nephronaias) Lea........_.. 592 Marginaliscandaharica(Unio)Hanleyand Medellinus/((WUnio)) Weasey..5---s45--20-- 592 MMC Oba Geretemaisciscisiascicie cise chen tes aoe 855 | Mederianus (Unio) Kuster............... 818 Marginalis candaharicus (Lamellidens) Mediastinus (Ptychorhynchus) Heude... 851 Hanley and Theobald................-- 855 | Mediastinus (Unio) Heude.............-. 851 Marginalis corriana (Unio) Hanley and Mediocris (Margaron) Lea .............-. 723 PINE O Dal eee sass misisisine cise eis ce cistern SUS) || Witeobiooals (pawl) IVR Sou Sconeaocecusadoee 723 Marginalis cylindricus (Lamellidens) Medionidus Simpson............- 506, 510, 514, 588 Hanley and Theobald.................. 855 | Medius (Margaron) Lea.................. 755 Marginalis cylindricus (Unio) Hanley and Medinsi(Unio) pieaeeescee sesso aoe 755 Ae Oya] Geese jase etsi= ce cicisreisiseiajstniciae' 855 | Medius (Unio) Reeve ........-....-..--.- 753 Marginalis hanleyi (Lamellidens) Simp- Megadesma (Barbala) Peetel ............. 587 BOM soondacpsoodoennacasocsosocaedsansece 855 | Megadesma (Cristaria) von Martens ..... 587 Marginalis (Lamellidens) Lamarck.....- 854 | Megadomus Swainson ........ daalamer ana 608, 662 Marginalis (Margarita) Lea .............. 855 | Megapterus (Unio) Morelet ........-...... 579 Marginalis (Margaron) Lea ...........--. 855 | Melanochlorea (Anodon) Heude......... 638 Marginalis obesa (Unio) Hanley and The- Melinia (Anodonta) Bourguignat.......- 625 Oba] Geren cista mic sisicis sci arspiei starts welts 855 | Melinus (Unio) Conrad..........-.....-.- 53 Marginalis obesus (Lamellidens) Hanley Melleus (Margaron) Lea .....-..-...-..-- 597 eval WNaeO RNG) sseeoocopadooseoossasucces 855 | Melleus (Nephronaias) Lea .............. 597 Marginalis tricolor (Lamellidens) Kuster. CED |) MCE WS (Osa) JHE, Socadacacosodscsaceoce 597 Marginalis (Unio) Lamarck.............. 854,855 | Mellinus (Unio) Petel ................... 536 Marginata (Alasmidonta) Say......-- 670, 671,765 | Membranacea (Anodonta) d’Orbigny .... 917 Marginata (Alasmodonta) Say -........-- 670 | Membranacea (Unio) Hanley .:.......... 888 Marginata (Anodon) Ferussac .......-.-.- 617 | Membranaceus (Glabaris) Maton ........ 918 Marginata (Anodonta) C.B. Adams ...-.-. 671 | Membranaceus (Margarita) Lea.......... 919 Marginata (Anodonta) Say............--- 632 | Membranaceus (Margaron) Lea.......... 919 Marginata (Baphia) H.and A. Adams.... 671 | Membranaceus (Mytilus) Maton ......... 918 Marginata (Margarita) Lea ............-- 671 | Membranaceus (Unio) Hanley ........... 919 Marginata (Margaritana) Gould .......-. 671 | Menardi (Unio) Bourguignat ............ 862 Marginata (Margaron) Lea..-............. Gals | >Menelikii(Unio)Solilletss. S20... -- secs 862 Marginata truncata (Margaritana) B. H. Menkianus (Margarita) Lea.............. 541 \KHHIEU cossb been seeoagsppnecdodsEseaeaas 671 | Menkianus (Margaron) Lea.........-.--- 541 Marginata (Unio) Hanley...........-.... 671 | Menkianus (Unio) Lea .......-.-...-..... 541 Marginatus (Mytilus) Eaton ........-.... 631 | Menzieni (Margaron) Lea.-............... 889 Marginis (Margaron) Lea .............-.. 566 | Menziezi depauperatus (Diplodon) Hut- Marginisi(Umio) Weaijocss: ses. o-sese se 566 POM esas sere ees ye ahatate Tate weenie 890 Marioniana (Cameronia) Bourguignat. .. 910 | Menziezi (Diplodon) Gray ............... 872, 889 Maris-galilei (Unio) Locard...-.......... 693 | Menziezi hochstelleri (Diplodon) Dunker 889 Marnoi (Spatha) Jickeli ..........-...... 899 | Menziezi rugatus (Diplodon) Hutton .... 889 Marryattana (Anodonta) Lea...-........ 6425 |e Menziezig(Umio i Grayenneseeeeeceeeces oe 889 Marryattana (Margaron) Lea .........-.. 642 | Menzieziana (Unio) Reeve.......--..-..- 889 Marshii (Unio) B.H. Wright.............. 714 | Merceri (Margaron) Lea..-....:..-..----. 718 Martensi (Anodonta) Clessin ............ O28) || Wiesel (Oper) Ibe oc a segaaacsdancooessos 718 Martensi (Castalina) von Ihering ........ 865 || Merdiger (Unio) Reeve ......-:..--.-.---- 700 Martensi (Diplodon) von Ihering .......- 882 | Meredithii (Margaron) Lea ....-.........- 761 Martensi (Spatha) Sturany............... 897 | Meredithii (Pleurobema) Lea ...-........ 761 Martensi (Unio) von Ihering............. 882 | Meredithil (Unio) Lea...-..------...----- 761 Masoni (Margarita) Lea...............-.. 709 | Merodabensis (Unio) Kuster .......-.---- 842 Masoni (Margaron) Lea....-....-......-. 709 | Merus (Margaron) Lea..........---.---:- 708 Masonic(Umio) Conrad) 2 eos ases)- ass | Ropeil((Margaron) leases. sees aces 738 Pleiodon Conrad ............. 501, 506, 515, 907,908 | Popeii (Unio) Lea ...............-.--...-.- 737, 738 Plena (Quadrula) Lea.:........---------- 790M PO penois (Unio) i Callas een eereee se sceee 610 -Plenus (Margaron) Lea --.------.=----4-- 790) | Roreiter, (Am od o))|Grayeesee eee e ee ee eee 932 PUES (WO) IE, Se csseocodsscocdaeseaue 790 | Porphyreus (Lampsilis) Lea.............. 538 Rlethobasus;oumpsonesreeneeseeseeeecieee: 764. | Porphyreus (Margaron) Lea ........-..-- 58 Pletholophus Simpscn..........--.------- 585 | Porphyreus (Unio) Lea............-..---- 538 Pleurobema Rafinesque -:..---2.2-.---.-- 506, | Porrectus (Unio) Conrad...-......-...... 740 509, 510, 514, 745, 754, 760,774,793 | Postellii (Margaron) Lea................- 723 Rlexusi(Umio)iConradis-s--s--s2 22 eee c- AOL TU) | Leo KEM oht (pablo) IUCES Saaschcoasoccoccuedas 723 Plicata (Anodonta) Haldeman......-.--- 659 | Poulsoni (Symphynota) Ferussac ........ 568 Plicata (Anodonta) Schrenck......--.--- 583 | Poulsoni (Unio) Conrad...............--- 568 Plicata (Barbala) H. and A. Adams.....- 383 | Poulsoni (Unio) Sowerby ....-.....--..-- 568 Plicata clessini (Dipsas) Kobelt.........- 584 | Powellii (Lampsilis) Lea..........--..... 538 Plicata (Cristaria) Leach........-..-- 583, 584,903 | Powellii (Margaron) Lea....--...---...-- 538 Plicata hippopeea (Quadrula) Lea....-... TOY? || Leto elulint) (WW pauWo))) WSs Gocco Gocansnconeooncs 538 Plicata japonica (Dipsas) Kobelt........- 585 | Preeclara (Anodonta) Bourguignat....... 649 Rihcatay (Marg arom) ewes eres s-casecceees 659 | Preeclarum (Colletopterum) Bourguignat 649 Plicata (Mutela) Sowerby...--....-.----. 905 | Prelonga (Eurynea) Stimpson....-....-- 545 licatay (Miva) pHaton ee ecceenecees cee 767 | Prelongus (Unio) Barnes .......-.--...-- 545 Plicata (Quadrula) Say ...........--...-. 766,767 | Prasina (Mutelina) Rochebrune ........- 906 JPVNGRRED (WOO) SBN Soosassoosensusoocs 504, 766,767 | Prasinatus (Unio) Conrad...............- 714 Plicatula (Barbala) Peetel......22.2..2--- o84n |i erasinuss (Unio): Conrad ss sen4. ss seeesne 779 Plicatulus (Margaron) Lea..........-.-.- 853)-| Prattil (Lampsilis)) Wea. 2522252222222: 550 Plicatulus (Nephronaias) Charpentier -.. SD era tiie Mare aromas) Pu eC aes seeeisenseee eee 550 Plicatulus (Unio) Charpentier -....-....- S9IN5O(alebra tiie (Unio) peeaeeeeeseae eee ase see aes 550 Blicatulus;@Unio) Mewes... 2s sseeeee as 853 | Pressa (Alasmodonta) Baker............. 663 Bliecatusi(Appius)) Graves s-ececsc. saescees 583 | Pressodonta Simpson......-.-.--.-.------ 667 Plicatus (Dipsas) Leach ...--...........-. 583 | Pressus (Margaron) Lea.........--------- 663 Plicatus((Margarita)) Lea. .-.2-..2-2.----- 583,767 | Pressus (Unio) H. and A. Adams.......-- 663 Plicatus (Margaron) Lea..........-.--.-- 583,767 | Prevostianus (Lampsilis) Lea..........-- 559 Plicatus (Mycetopus) Clessin...-..-....-- 930 | Prevostianus (Margaron) Lea....-....--- 550 Plicatus (Mycetopus) Sowerby ....-...... 905 | Prevostianus (Unio) Lea.-...--.....-.-.-- 550 Plicatus (Mytilus) Solander.............. 583 | Preyostianus (Unio) Sowerby -..--.-.-.-- 560 icatusi@zlatinis) pueamssssseseersssener ee OOD mp erisodoneleearer: saree ance ere eee eee 863 Plicatus (Plectomerus) Conrad........... (67) Prisodon| Schumacher sss. 2). 221-12 4-1 501, Plicatus! (Umio) Kuster 22s. s22scesc.5-5- 769 506, 507, 515, 867, 868, 869, 870, 872 Plicatus (Unio) Sowerby ................- GSEs || APoalnKolavoye ((WWpouto)) Ibee nou oooaesdadoSos 820 Pliciferus (Margarita) Lea ..............- 701 | Productus (Margarita) Lea..........:...- 735 Pliciferus (Margaron) Lea..............-. 702 | Productus (Margaron) Lea.....-....-..-- 735 Hciferus|(Umio) ea neta see eee sees 701 | Productus (Unio) Conrad .......-....---- 735 1032 INDEX. Page. Page Productus (Unio) Mousson .....--...----- 820' | Puleher (Margarita) lea 228222522. --- 541 Proechus (Unio) Bourguignat.-.........-- 683 | Pulcher (Margaron) Lea....-......------- 541 Profugus (Diplodon) Gould -......--..-.- 89i-)| eulcher (Unio) bea=sa===5 esa eee 541 Profugus (Margaron) Lea ....--.--------- 891 | Pulcher (Unio) Tapperone-Caneiri - --.- =e 856 Prohucusy (Unio) 1G oul dseeee asses =eeeeeeee 891 | Pullatus (Margaron) Lea.--..--..-.-----..-- 726 Prolongatus (Rectidens) Drouet -......-- 85) Seullatusi (Unio) ied sss=asee eee eee 726 Prelongatus (Unio) Drouet-.......-...--.- 853, 854 | Pullus (Lampsilis) Conrad .-.-....---..-- 566 Propinqua (Truncilla) Lea........-..---- 526) eeulllusi (Mare aron) Mea esse= asses 566 Propinquus (Margaron) Lea ..-.....-..--- 5235) seullusi(Unio) {Conrad saeesee peepee 566 Propinquus;(Un10) beats. sees ee eee 523 | Pulvinata (Columba) Clessin -........-.-- 915 Proprius (Lampsilis) Lea.-.......-.- SSenons 548 | Pulvinata (Leila) Hupé_--.-..-..----.--- 915 Proprius (Margaron) Lea......-.-.------- 348 | Pulvinatus (Anodon) Sowerby -.---------- 915 Proprius (UMNO) Weaeasss sees ae eee 548 | Pulvinulus (Margaron) Lea-..-...-...--- 758 Proptera Rafinesque -..--------22.--- Ole 5s66;078" || Pulyainlus (Umio) nea ass neee 758 Prosacrus (Unio) Locard! ---2----=-----2-- 689 | Pumila (Anodonta) Heude .....-.-...---- 640 Protchi (Spathella) Rochebrune ..--...--- -902)) | Pumilal(Quadrulla) sites sees eee ae 785 Protensus (Margaron) Lea -.-..-..-.----- 716 | Pumilio (Unio) Kuster --..--- See 817 Protensus (Wnio) Lea =22--2-28.2--2---2=- 76, |) Pumilus|(Marearon)sledse=--s=- =e 785 Protensus (Unio) Tapperone-Caneiri-..-- 8b |) Bumilus)(Unio)Mearess== esa sseeee eee ee 785 Proyancheriana (Arconaia) Pilsbry..---- 725) ||) Pumilus) (Unio) Ziewler s2.-- so ssesseeeee 821 Proximus (Margaron) Lea ------.--------- dd1 | Punctatus (Lampsilis) Lea .....-..:..-..-- 542 IPTOxamMUs) (UO) PRUSter =: sean 556 | Punctatus (Margaron) Lea .....-.-...---- 542 PrOxTMUS| (WMO) Bea ees se eee aes 550) | -PBunetatus) (Unio) ea 22255 ee eee 542 Pruinosus (Unio) Schmidt .-......---.--- 698 | Puniceus (Lampsilis) Haldeman --.....-- 548 Prunoides (Diplodon) Lea ...--.-..-.---- 875 | Puniceus (Margaron) Lea .---....--...--- d48 Prunoides (Margaron) Lea.-.-.-.-------- 875 | Puniceus (Unio) Haldeman...-..-...__-. 548 Pranoides (Unio); Geass: ----2- === eee 875 | Purpurascens (Anodon) Swainson -..-.-- 575 Prusii (Unio) Bourguignat -....--...----- 694 | Purpurascens (Unio) Lamarck ---....---- P7PAL Psammactinus (Unio) Philippi-....-..--- 879 | Purpuratus (Lampsilis) Lamarck ------..-. 568, 569 Psammita (Anodonta) Bourguignat..----- 625 | Purpuratus (Margarita) Lea -...-....-.-- 568 Psammoica (Castalina) d’Orbigny -.-.--- 866 | Purpuratus (Margaron) Lea----- oe eaawaess - 568 Psammoica (Unio) d’Orbigny.-.-.-...-.---- 866. | Burpuratus) (Umio) bears =s5-4---e esse eee 568 Psammoicus (Margaron) Lea ...------.-- 866 | Purpurea (Anodonta) Valenciennes -...- §32 Pseudavicula Simpson --..--...------- 506,515,860 | Purpurea (Dalliella) Valenciennes..-.-.-- 832 Pseudobaphia Simpson-.-.-..--2----------- 849 | Purpurea (Margarita) Lea.--.--..-.--.--- §32 Pseudodon' Gould sesso. eee eee 506, 515, 834,836 | Purpurea (Margaron) Lea........-...-..- $32 Pseudodontopsis (Anodonta) Bourgui- Purpurea (Miya) Baton s-2-5----eeeseseee 721 SNUG See ee Ree eee eee meee ae 648 | Purpurellus (Margaron) Lea ....-.-.-.--- 718 Pseudodopsis (Anodonta) Locard ......-- 649, 650 | Purpurellus (Unio) Lea .--.-----..--.-.-- 718 Pseudodopsis (Gabillotia) Locard.-.-...--.. 650) Purpureus (Umi0)) Say qese- oe sseee eee 721 Pseudodus de Morgan.......-.----=------ 834 | Purpuriatus (Unio) Say ---.--.--.2.--2--- 592 Pseudomutela Simpson ...--.------------ 905\ -Burus:(Marearon) hea soas.5 4 sess eee 729 Pseudonymus (Unio) Simpson --.-.-.--.-- 69.) Burus) (Unio) Wealssase-s-e see eee ee 729 IRSCUGOODESIM PSOM asset aa eee eee aeee 601 | Pusilla (Obliquaria) Rafinesque-....-.--- 744 Pseudospatha Simpson-.-.-.-----..-- 505, 506, 514,577 | Pusillus (Mlargaron) Lea -...5.22.------2- - 708 IPSIMUNIO 7a 3 Hew hese eee oes Soe e a eee 510) ) (Busillus) (Unio) hearse see ee 708 IBSoricus# (Unio) Wloreletes-e- ss eee eee 703 | Pustulata (Margaron) Leas----22--52--2=- 781 Pieranodonvhischeretee-sscen eee -e eee eee 637 | Pustulata (Quadrula) Leas: -222222--2 == 781 Pterosygna Rafinesque -------.---------2- 665 | Pustulata (Unio) Swainson. .-....-.---.-- 608 Ptychobranchus Simpson ....--.-- 506, 510,514,612 | Pustulatus (Margarita) Lea .............- 781 Ptychorhynchus Simpson .-...-.--.-.- 506,515, 850 | Pustulatus (Unio) Lea..........-.-..:..-- 781, 782 iRtychodermaysimpsone==sse-p ese eee 606 | Pustulosa keineriana (Quadrula) Lea...- 780 IP fy. chos ene see seeeeene eee ene eee eee 514,612 | Pustulosa pernodosa (Quadrula) Lea... .- 780 Puberula (Anodonta) Gould ...-.....---- 919 | Pustulosa (Quadrula) Lea........-..- 519, 779, 780 Pudica (Pleurobema)) Lea. =. -=-=2-5------ 751,760 | Pustulosus (Margarita) Lea .....-.....-.- 779 Pudicus (Margaron)) lea -..-. 2-222 ---22-- 7ol | Pustulosus (Margaron) Lea......-..------ 779 Rudi cus; (Umi) heaSesleeeeeeee teen fol | Pustulosus\( Unio) Calle 2222 see eee 782 Puelchana (Anodonta) @Orbigny--...--- 921 || Pustulosus:(Unio) eal sSe cesses e eee 779 Puelchana (Margaron) Lea-.-.------.---- 921 | Pybasil (Margarom) Leas: -2 22222. essse 549 Puelchanus (Glabaris) d’Orbigny --.----- 991) «Py basil (Om10) ieaeassess-e eee eee 549 Puerorum (Anodon) Heude...-.-..--.---- 639 | Pygmea (Mycetopoda) Spix .-----.-.--.- 934 Pugio (Nodularia) Benson..-.---.-..-----.-- 814 | Pygmeeus (Margaron) Lea..-.-..--.------ 715 Pusio (Unio) SBensonees=ssessee ees eee ee Sit | Pygmeeus (Mycetopus) Hupé.-----.-..--- 935 Pulchella (Anodon) Heude ...--..-.----- 639 | Pygmezeus (Mycetopus) Sowerby ---------- 934 Pulchella (Cameronia) Bourguignat--..- 910 | Pygmeeus (Platiris) Lea .......-...----..: 934 Pulcher (Lamellidens) Tapperone-Caneiri 856) | -Pygmeeus!(Um10) Geaess-ee seo aes 715 INDEX. 1033 Page. | Page. Pyramidata (Quadrula) Lea.........- 510, 754,790 | Rajahensis (Unio) Lea..................- 844 Pyramidatus (Margarita) Lea ..........-. 790 | Raleighensis (Margaron) Lea............. 723 Pyramidatus (Margaron) Lea ..-..--.-.--- 790 | Raleighensis (Unio) Lea .........-..-.... 723 Pyramidatus (Unio) sede ss. -2 ceases 790 | Ranarum (Anodonta) Morelet........-.. 624 Pyriformis (Margaron) Lea....-...------- 762 | Randabeli (Brazzea) Bourguignat...._-- 907 Pyriformis (Pleurobema) Lea .---..------ 762 | Randabeli (Cameronia) Bourguignat.... 910 Te\pralvovamams) (havo) 1beE Ss Sek ceconsossensases 762 | Randabeli (Nodularia) Bourguignat..... 822 Quadrangulosus (Unio) Heude........--- 801 | Randabeli (Unio) Bourguignat .......... $22 Quadrans (Diplodon) Lea ....-..--..-.---- 885 | Randalli (Anodonta) Trask.............- 657, 658 Quadrans (Margaron) Lea ....-.......--- 885 | Rangianus (Margarita) Lea............-. 523 Quardrans (Umi) ease a-- a. .sss-scec oe 885 | Rangianus (Margaron) Lea .........-.-.. 523 Quadrata (Castalia) Sowerby......--.---- S645 Ran eiamiush (Umit @) eUealeeanesesereseeee eee 523 Quadrata (Margaritana) Lea ............- 664 | Rariplicata (Unio) Deshayes.-.........-..- 767 Quadrata (Margaron) Lea.....-..-...---- 664 | Rarisuleata (Unio) Lamarck ............. 721 Quadrata (Symphynota) Lea --....-_--.- 664 | Rasus' (Margarom)) eal sss22sss555---22--- 687 Quadratus (Margaron) Lea....-....----.- (23 |) IREISOIS) (Widhto)) IUCR, canSausoessocuoeeoouseee 687 Quadratus (Tetraplodon) Sowerby --..-.- SIHA. [URN AUIS) (Oiebko)) Ibe Soo cGeédaoocoeneoesesacss 724 Ouadmatass (Umi o) Meas aye ere (osm eRavenelia (Unio) (Conradessss se eee eee 721, 748 Quadratus (Unio) Reeve .%.:.....--..---- 777 | Raveneliana (Alasmidonta) Lea ..-...-..- 671 Quadrilatera (Castalia) @’Orbigny ..--.-- 864 | Rayeneliana (Alasmodonta) Ferussac.... 671 Quadrilaterum (Tetraplodon) d’Orbigny- 864 | Rayeneliana (Baphia) H. and A. Adams. 671 Quadrilaterus (Margaron) Lea..---.-..-- 725 | Raveneliana (Margaritana) Chenu ...... 677 Quadrilaterus (Unio) Lea_..........--.-- 725 Rayeneliana (Margaritana) Lea........- G71 Quadriplicatus (Anodon) Sowerby...---- 618 | Raveneliana (Pleurobema) Lea...-...--- 748 Quadrula (Obliquaria) Rafinesque...--.- 744 Ravenelianus (Margarita) Lea..-......-- 671, 748 Quadrula (Rafinesque) .................. 505,506, | Rayenelianus (Margaron) Lea..........-- 671, 748 = : 508, 510, 514, 745, 765, 773, 793,805 | Ravenelianus (Strophitus) Conrad...--.. 671 Qirencbapohns, (Cm) CSN pose coadocccodscose 17 | Ravenelianus (Unio) Lea-.:-.-...--..--. 748, 758 Quinqueannulatus (Unio) Kuster.....--- 683 | Ravenelianus (Unio) Reeve..........---- Tal Quintardii (Unio) Cragin --...-......-.-- 768 | Ravistellus (Margaron) Lea.............- 597 Radians (Margaron) Lea........--:------ 564 | Ravistellus (Nephronaias) Morelet.....-. 597 IRANChE AS {COpavo)) IER Sa caccoacsoscoessaae> 554 | Ravistellus (Unio) Morelet.......--...--. 597 Radiata (Alasmodonta) Conrad....-.-..-- 620 | Rayoisieri issericus (Unio) Kobelt -...-.- 686 Radiata (Anodonta) Valenciennes ..-..-- 648 | Ravoisieri (Margaron) Lea.-.....---..--. 687 Radiata (Cristaria) Simpson.-....-..-.--.- 585,586 | Ravoisieri (Unio) Deshayes......-....--- 687 Radiata-(Margarita) Lea........-.-.2.--- 925 | Rayi (Anodonta) Drouet..-........2-.--- 624 Radiatay (Moya) (Gmelin) =s225- <2 ss2ss-s5- 535 | Reclusa (Pluerobema) B. H. Wright-..--- 760 Radiata-(Umio)) Lamarck: -=2- 2-522. --s5-- 528,535 | Reclusus (Unio) B. H. Wright ..........-- 750 Radiata (Uniopsis) Swainson .--....--.--- 667 Recognitus (Mycetopus) Heude..-.--....-. 656 AGMA SiN PSOMsn se eee ee eee ae 20= 1 Recta (Elyria) sSOWerbYyiaseeee eee eee 871 RaCiaiusE(AMoOd on) Spix as. c--ses-s-5=2- 925) Recta: (Unio) shaman sas se-s see ea 534, 544 Radiatus (Anodonta) Muller.......-.-.-- 622 Radiatus conspicuus (Lampsilis) Lea---.- Radiatus (Glabaris) Spix...--......-.---- Radiatus (Lampsilis) Gmelin 534, 535, 536 Radiatus (Margarita) Lea ..--...-----.--- 535 Radiatus (Margaron) Lea....-...-.-.-.-- 535, 925 Radiatus (Strophitus) Conrad.-.-.....----- 620 IRerchennprs| (Ahab) ADs) IE ysescasetesesseqse 552 Radiatus (Unio) Hildreth........2-:.---- 527 RACHONUSN (WiM2O) Wheaten e eee ts see 716 TRACHONUS (C(WAGO)) ILEE) 35.55 s6Sccsonaescses= 750 Radiota (Nodularia) Charmes...-...--..- 82h, Radiotuss(Umic)| Charmess: 225 2-5-2522 - 824 Radula (Dysnomia) Rochebrune..-....--- 820 Radway (Onio) "Benson 2.252. 2 esses ee §20 IReGlwka, (iewO) SE; consdssosedeeccescasnns 744 | Radulosa (Quadrula) Drouet and Chaper- 803 Radulosa rhomboidea (Quadrula) Simp- BOM dooodnctanscdcosocaossooses ssesSages 803 Radulosus (Unio) Drouet and Chaper...- 803 Raeensis (Margaron) Lea ..-.-:..:------- 723 IRBs) (Wav) IE), a ooeseacccnsccssseaos 723 Rajahensis (Margaron) Lea ......-------- 844 Rajahensis (Parreysia) Lea ..-.....--.--- Shh Recttidens)/Simpsonee=--e ese sees 506, 515, 853 Rectilinearis (Unio) Sowerby -.-.-.-..------ 825 5 | Rectus (Lampsilis) Barnes ....-.---.-...-- 545 Rectus (Lampsilis) Lamarck........-.--- 5hh Rectus7@iare anita) Mee dss saeeeeeeseeesee 545 |e daveKergb) (Wilengedmxoyal)) ILE) oscensccsucesoesos 545 Rectus (Prisodon) Sowerby.-.-.-.-..------ 871 Rechts (Umi) Waar chkaes eee see see 509 Recurvatusy (Umi0)) We aestee aaeenen enemas 790 Recurvirostris (Anodonta) Lea .....-.--- 648 Reevianus (Lampsilis) Lea..........-.--- 538 Reevianus (Margaron) Lea...-....---.-..- 538 IRGlenwenoubIs (((Chavko))) Wels Soosancceooossosons 53. Reflexa (Obliquaria) Rafinesque..-.-.-...-- 610, 611 IRGuilepquks (Web) SVs sonccoonceacubensance 611 Refulgens (Margaron) Lea..-......--.--.- 782 | Refulgens (Quadrula) Lea ......---....-- 782 INRGivUlEKeINg) (paul) IEE) -Sosaanneencoscoeose 782 Regularis (Anodonta) Morelet ......--..- 624 Regularis (Margaron) Lea:.-..........--- 556 Reg ulanich (Umi o) pu eaieee esses ee cree seac 55d Regularis (Unio) Sowerby.......--------- 531 Reiniana (Anodonta) von Ihering ....--- 585 Reiniana (Barbata) Peetel.....-....------ 585, Reiniana (Cristaria) von Martens......-.. 585 1034 Reiniana (Dipsas) Kobelt .:......-....-.-. Reiniana (Nodularia) Kobelt .....-..-..- Reinianus (Unio) Kobelt........-...-.--- Renea (Nodularia) Jousseaume........-.- Renei (Spatha) Jousseaume........----.- Reneus (Reneus) Jousseaume........---- Reniformis (Unio) Rossmiissler .....-.-.- Requieni (Unio) Michaud..............-. Requieni (Unio) Rossmiissler ...........- Retiaria (Parreysia) Heude ....-........- JRE MEMEO! (Ota) ISTEWOS 556 cossccososaaed Reticulata (Margaritana) Peetel........--. Reticulata (Margaron) Lea..........-.--- 91: Reticulata (Monocondylea) Moricand... Reticulatus (Anodony Sowerby ....----..- Reticulatus (Aplodon) von Ihering ...-.-. Reticulatus (Nephronaias) Simpson...... Reticulatus (Unio) Sowerby-.-..--..--.--- Retortus (Unio) Heude.............-....- Retortus (Unio) von Martens...--.....-- Retteri (Anodonta) Drouet .............-- Retusa (Anodon) Heude .......-...------ Retusa (Castalia) Hupe ........-......... Retusa (Obliquaria) Rafinesque........-. Retusa (Obovaria) Lamarck ...........-. Retusa (Unio) Lamarck........-....-.--. 599, Retusus (Margarita) Lea........-...-.--. Retusus (Margaron) Lea ..............--- Retusus (Tetraplodon) Hupé..........--- Retususk (Unio iSayeeeeesaseeeeeee seer ree Revoiliana (Cameronia) Bourguignat.... Rhombeus (Diplodon) Wagner ....-....- Rhombeus (Margarita) Lea............-. Rhombeus (Margaron) Lea ....-......--- Rhombica (Alasmodon) Anthony....--... Rhombica (Margaritana) Peetel.......... Rhombica (Monocondylea) Kuster. ..--- Rhomboidea (Leguminaia) Kobelt ...--. Rhomboidea (Margaron) Lea ..........-- Rhomboidea (Microcondylea) Petel ..-.. Rhomboidea (Monocondylea) Lea....-.. Rhomboideus (Pseudodon) Westerlund. . Rhomboideus (Unio) Moquin-Tandon ... Rhomboideus (Unio) Sowerby..-.--....-- Rhomboidopsis (Unio) Locard ...-....... Rhbombula (Unio) Lamarck ............-. Rhuacoica (Unio) d’Orbigny..........-.- Rhuacoicus (Diplodon) d’Orbigny....... Rhuacoicus (Margaron) Lea ............- Rhuaconicus (Diplodon) Kuster..........- Rhuaconicus (Unio) Kuster....-.....-.-- Rhyaceca (Monocondylea) Petel ......- Rhynchoidea (Chambardia) ...-......... Rhynchonella (Chambardia) ....-...-.-- Rhynchonella (Grandidieria) Bourguig- TAG AGS EE EIS Eee ah tepes Richthofeni (Unio) von Martens.......-. Riddellii (Margaron) Lea ...............- Riddellii (Quadrula) Lea ...-...-..--...- IRV KOKG KEW DHL (Outi) OCH Sos tedotoccusdaasacor Ridibundus (Unio) Say ...--.......-..--- Rigaday (Miya) WOOd hese ee teee eters eee Rimosus (Unio) Rafinesque ..........-..- Rioplatensis (Anodon) Sowerby..-.---.-.- Riparia (Unio) C. Pfeiffer ................ Rivicolus (Unio) Conrad..............--- io'a) 0 ie) oS INDEX. Page. 585 | Rivularis (Anodonta) Heude ............ 810 | Rivularis (Mycetopus) Heude............ 810 | Rivularis (Solenaia) Heude.............. 822 | Rivularis (Unio) Conrad .........-....... 896 | Rivularis (Unio) Rafinesque............- 822 | Roanokensis (Margarita) Lea..........-. 698 | Roanokensis (Margaron) Lea............ 686 | Roanokensis northamptonenesis (Unio) 699 IDG eran aainrc HHAEsR Sra aeTat ana eSdaT 850 | Roanokensis (Unio) Lea-....-.:..--...... 850 | Rochebruneana (Moncetia) Bourguignat 912 | Rochebrunei (Spatha) Jousseaume....... Rochechouarti (Quadrula) Heude .....-- Rochechouarti (Unio) Heude .........-.. Roissyi (Margaritana) Westerlund ...._.. Roissya) (Unio) eMichaudee-eees-ee sees Rolleit(Unio skobelte eee aes Rosaceus (Unio) Conrad ................. Rosaceus (Unio) De Kay .-..-............- RosanorhamphviSkessseee sees eeee er eres Rosea (Anodon) Heude.................- Rossmissleriana (Anodonta) Dupuy ..... Rostelll many (Unio) Weal eases ee eee eee ee Rostreeformis (Unio) Lea................- Rostralis (Unio) von Martens .........--. Rostrata (Anodonta) Held ............... Rostrata (Anodonta) Rossmiissler........ Rostrata (Grandieria) Bourguignat -..... Rostrata (Iridina) Rang.........--....-.. Rostrata (Mutela) Rang.........-..--.-.. | Rostrata (Mutelina) Bourguignat........ Rostrata (Spatha) von Martens ...-...... Rostrata (Unio) Lamarck............--..- Rostrata (Unio) Valenciennes. ..-......-. Rostratus (Anodon) Sowerby .........-.. Rostriformis (Margaron) Lea........-...- Rostriformis(Umio)Leareeeeeee eee eceeee Rostrum (Margaron) Lea ................ Rostrum’ (Umio) ueataeste ees eee eeeeeee Roswellensis (Margaron) Lea............ Roswellensis (Unio) Lea ................- Rothi (Unio) Bourguignat .......-......- Rotulata (Obovaria) B. H. Wright.......- Rotulatus (Unio) B. H. Wright........... Rotunda (Margaron) Lea ....-....--.--.. Rotunda (Mya) Wood .............----... RowundaniapAcacsi zeae eee Ce eeeee re reeee Rotundaria Rafinesque..........-..------ Rotundata (Anodonta) Trask ...........- Rotundata (Glebula) Lamarck..........- Rotundata (Grandidieria) Bourguignat - Rotundata (Ihringella) Mousson........- Rotundata (Spatha) yon Martens .......-. Rotundata (Unio) Lamarck .......-.-.-..- Rotundata (Unio) Manduyt.........-..-- Rotundatus (Anodon) Swainson ........- Rotundatus (Margarita) Lea ............- Rotundatus (Margaron) Lea ........-...-- Rotundatus (Plagiodon) Mousson...-...- Rotundatus (Unio) Lamarck............. Rotundus (Anodon) Spix .............-.- Rotundus (Diplodon) Wagner......----...- Rotundus (Glabaris) Spix............---- Rotundus (Margaron) Lea ........--....- Rotundus (Unio) Wagner .......-.----..- | Rousii (Unio) Dupuy...........-...---..- 800 639 624 737 736 829 627 627 829 905 905 905 905 682 723 601 698 918 INDEX. : Page. Rovirosai (Lampsilis) Pilsbry --.-..--.-.- 568 | Rugosissima (Hyria) Sowerby .-.-.---.--- Rovirosai (Unio) Pilsbry......---.------- 568 | Rugososuleata (Quadrula) Lea.....-..-..- Rowellii (Margaron) Lea_......---...-..- 594 | Rugososulcatus (Margaron) Lea ...---.--- Rowellii (Nephronaias) Lea......-..----- 594, | Rugososuleatus (Unio) Lea ...--...-.---- Rowellii (Unio) bea______.-.--.22.----..- 594 | Rugosum (Lasmigona) Rafinesque....-.. Rubella (Anodon) Heude.........------- 639 | Rugosum (Triplodon) Spix .....-........ Rubella (Pleurobema) Conrad .....--.---- 757,758 | Rugosus (Anodon) Swainson.......-.---- Rubellinus (Margaron) Lea.--..-.-------- 590 | Rugosus (Unio) Chenu...-..........-.--- Moe liliinnss (Wmio) ben =ss2ses= = 52 esse 590 | Rugosus (Unio) Hanley and Theobald... Rubellus (Margarita) Lea..........------ TS |) IROKSO SUIS (Wabi) TOQUE - se S66neescoesseds Rubellus (Margaron) Lea ...........--.-- 758 | Rugulosa (Mya) Wood .-..-..-..-----..--- Rubellus’ (Unio) Conrad. .-...--..-.---.-- 757 | Rugulosus (Nephronaias) Charpentier... Rubens (Anodonta) Lamarck....-..-..-- 895,896 | Rugulosus (Unio) Charpentier ........... Rubens cailliaudi (Spatha) von Martens. . $96 | Rumphianus (Margaron) Lea.........--- Riibens)(Inidina) Ranges 222 222-25. 896 | Rumphianus (Quadrula) Lea ........---- Ripe nsi (blatiris)) ears 2222s ose sees 896 | Rumphianus (Unio) Lea.......-..---.--- ‘Rubens (Spatha) Lamarck ...........-..- 895,896 | Rustica (Nodularia) Lea......-...-.-.--- Ri bensh (Wioio)) Menke\s2eee ness eee ae 691,789 | Rusticus (Margaron) Lea .........-..--.- IR aere ((Wpabto)) CloraweNel oo coscasencuaseaces 790m | PRUStIGUSh (Unto) please eeecee sae Rubicunda (Anodonta) Lea...-.....-.--- 918 | Rusticus (Unio) Sowerby ..-.-..-..--.--- Rubicunda (Margarcn) Lea......-...---- 918 | Rutersvillensis (Margaron) Lea .......-- Rubicundus (Glabaris) Lea .......-...--- 918 | Rutersvillensis (Unio) Lea.........-..-.- Rubida (Quadrula) Lea ..............--.- 787 | Rutilans (Margaron) Lea ..............-. Rubidus (Margaron) Lea.....-.......--.- Tis. || leqbhalenosy (Diu) Ie) S465-ascasceccosanocs TEU opel pis) (OioNO)), ILER Sosangccoadssacecnas Ziad |) SEXGCRUAES (Wat) IQR Were Sosa cokseseosseess Rubiginosa (Quadrula) Lea .....-...-..-. 5HIOW7/86 | sacculus! (Unio) PREeMes asses ee eee = Rubiginosus (Margarita) Lea ........---- 786 | Sacellus (Nodularia) Drouet and Chaper. Rubiginosus (Margaron) Lea.....-.-..-- ES 786 | Sacellus (Unio) Drouet and Chaper ...-.-. Rubiginosus (Unio) Lea-.........-.------- 786) \esageril (Unio); Conradeessereess eee Rubra (Amblema) Rafinesque ........--- 744 | Sagittaria (Nodularia) Lea...........--..-. 8 sRudis| (Unio) Conrad. .--.-----.22--...--- 748,758 | Sagittarius (Margaron) Lea.........-.--- IROVObIS) ((Ohatt®)) LEAN soon nasoncodsspocoosas 875 | Sagittarius (Unio) Lea.-..........--.--..-- Rudus (Diplodon) Lea ......-..-..-.---.- 875 | Sagittiformis (Margaron) Lea..........-- Rudus (Margaron) Lea....-......-...--.- 875 | Sagittiformis (Unio) Lea .............-..- Rudus (Unio) Conrad .......----.-------- 758 | Sagrinatus (Unio) Sowerby -...-.-..----- IRWGWS (CAMIO) 1EAsoascccosacadosossacmese 875 | Saladoensis (Lampsilis) Lea ....__-_.--.- Ruellani (Parreysia) Bourguignat......-. 846 | Saladoensis (Margaron) Lea ........-...-- Ruellani (Unio) Bourguignat ..........-. 846 | Saladoensis (Unio) Lea ...........--.-.-- Rufescens (Cuneopsis) Heude...-....---- 805 | Salebrosus (Margaron) Lea........--.---- Rufescens (Unio) Heude ..-.......---.--- 805 | Salebrosus (Unio) Lea............-------- Rufofuscus (Diplodon) Lea...........-..-- 880 | Salmonea (Anodonta) Clessin.......--..-- Rufofuscus (Margaron) Lea......-..----- 722,880 | Salmonia (Anodonta) Lea..........-...-- Rufotuscus) (Unio) Wweas- 22225252522 5.-5.- 880 | Salmonia (Margarita) Lea............--.- Rufus! (Margaron))) Lea 222-2 52-- ssc sea. 704 | Salmonia (Margaron) Lea....-.......-.-- IRE) (Wim) IUGR) Sas acodassadooqosoueecas 704 | Salweniana (Anodon) Gould..........-.- : Rufusewlus! (Wmio)sbeass4- 4244 -ee esos 722 | Salweniana (Margaron) Lea........-.-..- Rugata (Solenaia) Heude................ 657 | Salwenianus (Pseudodon) Gould..-...-.-.-. Rugatus (Mycetopus) Heude-............-. 657 | Salwenianus (Unio) Sowerby.....-.---.-- Rugatus) (Blatinis) Wears. 5. sessacscnee 657 | Sampsonii (Truncilla) Lea.....-.....-.-- Rugatus (Unio) Hutton ......----........ 889 | Sampsonii (Unio) Lea............-...---. Rugatus (Unio) Menke..........-.....-.- 697 | Sandri (Unio) Rossmassler ........------- Rusifer) (Umio) Kuster sass ss.s22 eee 821 | Santeensis (Unio) Lea.............-..---- Rugifera (Anodonta) Dunker............ 648,902 | Sapotalensis (Margaron) Lea............- IRAN, Shhooy aon soo scecueueassaacdcucass 670 | Sapotalensis (Nephronaias) Lea.......--. Rugosa (Alasmodonta) Barnes........-.- 664,665 | Sapotalensis (Unio) Lea....-.......------ Rugosa (Baphia) H.end A. Adams....... 665 | Satillaensis (Margaron) Lea.......-- ates Rugosa (Complanaria) Stimpson......... 665 Sail avensis) (Umi) plbeaeeeeessrer setae. Rugosa (Hyria) Deshayes ....--.-....-.-- 869 | Satur (Margaron) Lea............-..----. Rugosa (Margarita) Lea.........-.------5 GG), | Senate (Gian) IWC a Seooeaseonsesacosueas Rugosa (Margaritana) Calkins........-.. 665 | Sauleyi (Leguminaia) Bourguignat...... Rugosa (Margaronj Lea.......-.......-.- 665 | Sauleyi (Margaron) Lea.............-.--- IRUTOSEY (CUAYEN IDEN <4 Sooo ecangdseccoouss 665 | Sauleyi (Microcondylea) Clessin......-..- Rugosa (Mya) Gmelin.................... 844 | Sauleyi (Pseudodon) Conrad...........-- Rugosa (Parreysia) Gmelin .............- 844 | Sauleyi (Unio) Bourguignat...........-.. Rugosa (Unio) Hanley :.--..:-.-2-2.2222- 665 | Savannahensis (Margaron) Lea ...-...--- Rug osay (Unio) sPometeecaesaeeeaeseee eee 678 | Savannahensis (Unio) Lea...............- 1036 INDEX. Page. Page. Savoyensis (Unio) Petel................- 843 | Securis (Margarita) Lea................-- 604 Saxeus (Margaron) Lea .......------.---- 547 | Securis (Margaron) Lea..........-....... 604 Saxeus (Unio) Conrad. -2-----52---2-+---- 047 |) Securis| (Plagiola) Weas--- ~~. 2.2... o- 2. 603 Sayanus (Unio) Conrad ...........--.-.-- 78), Gok | Se@wureis) (Wiel) IUC8, sscecocceacscasecsesecs 603 Seyvt (WW pawlo)) WWeivsl scocscaosonocosaccsesoone 739,741 | Sedakowi (Anodonta) Siecmaschko.....- 648 Sealdiana (Anodonta) Dupuy ...------.-- 624 | Semialatus (Physunio) Deshayes and Scalenaria (Rafinesque) -.......-..--..--- 519 SHS aeaee eoseeeaeecd Hoop atabbondodd 831 ‘Sceailenius (Umilo)iSayeeeseee eects see 752 | Semialatus (Unio) Deshayes and Jullien. 831 Scamnatus (Margaron) Lea .....---.----- 595 | Semidecorata (Nodularia) L. Morlet ..... 819 Scamnatus (Nephronaias) Morelet ...---- 595 | Semidecoratus (Unio) L. Morlet........-. 819 Scamnatus (Unio) Morelet ......-....-.-- 595 | Semigranosus (Margaron) Lea.........-. 702 Seaphydium (Anodon) Heude ...-.--..--- 639. | Semigranosus (Unio) Lea....-......-...-. 571 Scheefferiana (Strophitus) Conrad.....-... 617 | Semigranosus (Unio) Reeve...........--- 702 Schlaflii (Anodonta) Mousson.......----- 648 | Semigranosus (Unio) yon dem Busch .... 701,702 Schlegeli (Barbala). Petel..........-...-- 531 | Semiplicatus (Unio) Kuster.............. 590 Schlegeli (Hyriopsis) yon Martens ...---. 581 | Semiquadrata (Unio) Sowerby........... 831 Schlegeli (Unio) von Martens...-.-.-.-.- 581 | Semirugatus (Unio) Chenu....-.......-.- 842 Scheefferianus (Anodon) Sowerby...----- 617 | Semirugatus (Unio) Lamarck............ 693 Schombergiana (Castalia) Sowerby -...--- 864 | Semisulcata (Iheringella) H. Adams..... 913 Schomburgianus (Anodon) Sowerby...-.. 920 | Semisulcata (Monocondylea) H. Adams. 913 Schomburgianus (Glabaris) Sowerby..... 920 | Semmelinki (Unio) von Martens......... 834 Schomburgianus (Ptychorhynechus) Sempervivens (Anodonta) Deshayes..... 588 Ee Wale maaan atl ravens Seay serene une 851 | Senegalensis (Anodonta) Lea .......-.... 900 Schombergianus (Tetraplodon) Sowerby. 864, | Senegalensis (Margaron) Lea .....-...... 900 Schomburgianus (Unio) Heude........-.. 851 | Senegalensis (Spatha) Petel ..........-.. 900 Schomburgki (Anodonta) von Martens -- 588 | Senegalica (Mutelina) Jousseaume...-... 900 Schomburgki (Pilsbryoconeha) yon Mar- Sennaariensis (Unio) Kuster...........-- 821 GETING A ee ee a bie ae pane eee 588 | Sennariensis (Unio) von Martens .......- 813 Schooleraftensis (Margarita) Lea ......-. 780 | Serpentina (Anodonta) Clessin .....-.--- 917 Schoolcraftensis (Margaron) Lea--:...-.. 780 | Serradelli (Dalliella) Drouet............- 83h Schooleraftensis (Unio) Lea...-..-..-.... 780 | Serradelli (Unio) Drouet..-:.-..-2.------ 834 Schooleraftii (Margaron) Lea..........-. 780 | Servainiana (Grandidieria) Bourguignat. 828 Sehooleraftii (Unio) B. H. Wright -....... 780 | Sheefferiana (Anodonta) Lea......-...--- 617 Schrencki (Unio) Westerlund............ 808 | Sheefferiana (Margaron) Lea..........-.- 617 Schréteriana (Anodonta) Lea............ 931 | Shafferiana (Anodonta) B.H. Wright .... 617 Schréteriana (Margaritana) Peetel ....... 931 | Shanghaiensis (Unio) Lea......-...-...-. 808 Schroteriana (Margaron) Lea ............ 931 | Shefferiana (Anodonta) Clessin.......-.. 617 Schréterianus (Glabaris) Lea .........-.. 931 | Shepardianus (Margarita) Lea......--.-- 737 Schweinfurthi (Unio) yon Martens .-...-- 862 | Shepardianus (Margaron) Lea ....-.....-. 737 Schwerzenbachi (Unio) Bourguignat .... 694 | Shepardianus (Unio) Lea ...-....-...---- VEYA Scitulus (Margaron) Lea.........-...-..- 554 | Sheppardianus (Unio) Peetel............. 737 Scitwilusi (Umi o) eases ease eee 5o4 | Shistodesma Simpson .....-....-- 506, 514, 503, 804 Scobina (Nodularia) Hanley .-........-.- 816 | Showalterii (Anodonta) Lea .....-.....-.- 617 Scobinas; (Unio) Melanie yae aspen 816 | Showalterii (Margaron) Lea ........-...- 617, 757 Secobinata (Nodularia) Lea.............-. 815 | Showalterii (Pleurobema) Lea ..-......-.- 756, 757 Scobinatus (Margaron) Lea --....-.-...-- S15) 1) Showalterii (Unio) weass ses eeasee eee eee 757 Scobinatus (Unio) lea >..-.-..:......-... 815 | Shurtleffiana (Nodularia) Lea...-......-- 813 periptan(Quadnula)waeudes 24s. s24 ee. 802 | Shurtleffianus (Margaron) Lea........-... 818 Seripto-polystictus (Unio) Heude...-..-.. 799 | Shurtleffianus (Unio) dea --.-..--2..--.2% 813 Seripto-polystrictus (Unio) Peetel -....... 799 | Shuttleworthii (Diplodon) Lea.........-- 893 Scriptum (Alasmodon) Rafinesque.....-. 672 | Shuttleworthii (Margaron) Lea ......-..: 893 Secriptus (Anodon) Sowerby...----.-.---- 924 | Shuttleworthii (Unio) Kuster ............ 891 SCLUp CUS) (Wm) ECU eC ese as eee 802 | Shuttleworthii (Unio) Lea ..-.........-.. 893 Seutum (Lamellidens) Sowerby....--.--- 857 | Siamensis (Margaron) Lea.....22.222.5-5 859 Scutum (Unio) Sowerby..-.....-.-------- SEE || Siepoaerarns) (\Ohowi@)) IKEB) 4 oscckcoossaocsdco= 859 Sculptilis (Alasmodonta) Say ..--....---- 667 | Siamensis (Unio) Morelet -......-...--.-- 819 Sculptilis (Strophitus) Stimpson ........- 667 | Sicula (Potamida) Swainson.....-.....--- 683, 68 Sculptus.(Unio) Deshayes....-........--- 808 | Siculus (Unio) Hanley ..2-..-..2..2-22--- 683 Scutulatus (Lampsilis) Morelet .......-.- 576. |. Siculus' (Unio) Sowerby 222-222-3252 -s2- 686 Scutulatus (Unio) Morelet ........-.-..-- 576 | Sikkimensis (Margaron) Lea.........--.. 845 Scyphius; (Unio) pkeusterns eee e encase 76! | Sikkimensis (Parreysia) Lea...........-.- 845 Sebastanee (Unio) von Ihering .........-. 894 | Sikkimensis (Unio) Lea......-..........- 845 Secundus (Pseudodon) Heude .......-.-- 8h, Siliqua (Anodonta) Kuster....-.......-.- 588 Secundus (Unio) Petel...-..2..2.2.5-.--- 84) | Siliquoidea (Lampsilis) Stimpson ........ 5384 Securiformis (Anodon) Heude..-.-.....--. 638 | Siliquoidea (Mya) Eaton...........-..... 534 Securiformis (Unio) Conrad......-....--- 781 | Siliquoides (Unio) Kuster...........--..- : 534 INDEX. 1037 Page. Page. Siliquoideus (Unio) Barnes .....-...---.-- 534 | Soleniformis (Anodonta) d’Orbigny..._-. 930 Siliquosa (Mycetopoda) Spix.........-.-- 93, | Soleniformis (Glabaris) @’Orbigny ....... 930: Siliquosus (AmoGlon)) Siak< Ssoosseussacenc 934 | Soleniformis (Margarita) Lea............ 930 Siliquosus (Mycetopus) d’Orbigny.....--- 934 | Soleniformis (Margaritana) Peetel........ 679 Silquosus)(Plaitiris); Weare s+) 2682 eee 934 | Soleniformis (Margaron) Lea.........-.-. 930, 935 Siliquosus yar. b. pygmeum (Anodon) Soleniformis (Mutela) Bourguignat ..._.. 903 IS DU Na enn eee Govier uore, aia 934 | Soleniformis (Mycetopoda) d’Orbigny -.. 935 Simplex (Margarom) Lea.-.-...-....--..- 614 | Soleniformis (Mycetopus) Fischer........ 656 Siranjoloxe (Wi) WS -b esaosedcoessssaq500 614 | Soleniformis (Mycetopus) Reeve......... 935. Similaris (Quadrula) Simpson ..........-. 799 | Soleniformis (Platiris) Lea........-...... 935 Similis (Margaron) Lea ...........-.--.-- 716 | Soleniformis (Solenaia) Benson.........- 656 Similis (Mycetopus) Heude ...........--- 657 | Soleniformis (Spatha) Hanley and Theo- Similis (Unio) Lea......-- Sodas Gea BRS RBBA 716 allie ee Sees see ees crane eae 6A6- Simonis (Unio) Tristram ...........------ 693 | Soleniformis (Unio) Lea....-.......... ee 679: Simplicidus (Anodon) Sowerby .-...-.----- 625 | Solida (Anodonta) Kuster...........-.--. 917 Simpsoni (Mutela) Amcey ....-.-....-..-- 904. | Solida (Iridina) Kuster.................-. 896. Simpsoni (Unio) B. H. Wright..........-- AES Solider @Viy.sca) aturtoniesenes sees eae aee 685. Simpsoniana (Anodonta) Lea ........---. 647 | Solida (Quadrula) Lea ............... 757, 765, 789 Simpsoniana (Margaron) Lea .....-.----- 647 | Solidula (Anodonta) Deville and Hupe .. 928. Simpsonianus (Glabaris) Pilsbry -.....--- 925 | Solidula (Margaron) Lea......-..--.....- 928. Simpularis (Parreysia) Heude..........-- 845 | Solidulus (Diplodon) Philippi-........... 88t Simpularis (Unio) Heude ...........-.-.. 845 | Solidulus (Unio) Philippi................ 881 Simulans (Pleurobema) Lea........-.---- 760 | Solidus (Margarita) Lea.................. 789 Sioa DUN) (Wrawko)) ILCEW Ase sosascdsenssaoseas 760 | Solidus (Margaron) ea .................- 789: Simus (Mampsilis) Lea ..-..2-.-:..222.2-- HAD. || SOM (Wha) WO -asaneonodocbandaacosaca 789 Simus (Margarita) Lea:...-......1.---.-- 556 | Solisiana (Unio) @’Orbigny............... 887 Simus (Margaron) Lea ..................- 556 | Solisianus (Diplodon) d’Orbigny .......-. 887 SiS (WAG), WE caoassoscesosssadssenads 556 | Somboriensis (Harmandia) Rochebrune ~ 827 Sinensis squammosus (Unio) Heude ...-. 850 | Somersi (Anodonta) Call.............-.-- 648. Singleyanus (Lampsilis) Marsh ........-. 663 | Sondermannii (Anodonta) Kuster ....... 625 Singleyanus (Unio) Marsh .......-.-.-.-- 563 | Sordida (Zaira) Rochebrune -........-... 862 Singularis (Grandidieria) Bourguignat .. 829 | Sordidus (Margaron) Lea ................ 732 Sintoxia (Obliquaria) Rafinesque .....-.- (449 sSordiduss (WUmio) plea eeree esas eee cre ere 732 Sinuata (Obliquaria) Rafinesque-........- 744 | Sorini (Anodon) Heude .....--...-....-.. 639 Sinuata (Spatha) von Martens .........-- 899 | Sowcrbyanus (Margarita) Lea ........-.- 521. Simwatay (Unio) iC yPreitier sss 5-2 esse s- =. 676 | Sowerbyanus (Margaron) Lea ........... 521 Sinuata (Unio) Lamarck .....-.......-..- 678 | Sowerbyanus (Unio) Lea .-.-...--.......- 520 Sinuosa (Anodonta) Clessin....-........- 917 | Spadiceus (Margaron) Lea -..........-.-: 732 Sinuosa (Anodonta) Lamarck......-..-.- OD) | SHOANGSUG) (Wiawko)) IES, osscccacsscanscsdace 732 Sinuosa (Margarita) Lea ..........--.---- O25 |Oparsa (Quadrulla) hearse seceeneeeeee V75 Sinuosa (Margaron) Lea.......--...-....- 925) |/eSparsus) (Margarom) Weamsseseseses see ee 775 Sinuosus (Glabaris) Lamarck ........---- Ops |: Shops (Upon) Mauser cesseseososacesocso 784 Sirionis (Anodonta) d’Orbigny........-.-. OMG ||: ShoMeses (AOiauo)) ICR se bsccdansoosccsoocesoc 775 Sirionis (Glabaris) d’Orbigny.-........---. Gisniwsparus) (Margarom) ieaeesseeees ees eee 555 Sirionis (Margarita) Lea............--..-- Onis} ||, Spoewebis (Vial) JUS ec cdccdeseaceosusseuce 5DD Sirionis (Margaron) Lea....-......-....-- HS || Soa UE Coke keycacescsououes 506, 515, 895, 901 Sitifensis (Unio) Morelet ..............--- 694862 |b Spavhopsisisim PSOne eer errata eeeei ase S57 Sloatianus (Margaron) Lea.....-.......-. 706 | Spathuliformis (Spatheila) Bourguignat. 898 Sloatianus (Plectomerus) Conrad ........ 706 | Spatiosa (Anodonta) Cicssin ...........- 584. Sloatianus (Umno) sels eae yeh pee meats 705,706 | Spatiosa (Barbala) Peetel..............--- 585 Smaragdina (Craspedodonta) Anton -.... 584 |) Spatiosa (Cristaria)) @lessin-------.--22 22+ 554, 585 Smaragdites (Unio) Benson .............- $43 | Spatulatus (Lampsilis) Baker ..........-.- 557 Smithi (Grandidieria) Bourguignat..-...- 829 | Spatulatus (Margaron) Lea -...-...-.-... 557 Shoasi(Vavbt (MienEe wel) ILCkl As Soscoossoancces 8801 eSpatulatus (Umio) lucas. seeenas soe 557 Smithii:(Margaron) Lea..--.......-...-:- 880 | Spatulatus (Unio) Sowerby-..-.-.....-.- Af 596 Smithii (Unio) Gray and Pidgeon........ 880 | Speciosa (Quadrula) Lea ..........-..--.- 778 Sobolus (Nodularia) Fischer...........--. 819 | Speciosus (Margaron) Lea.......---..---- 778 Sobolus (Unio) Fischer.......-..:.-----.- 819 | Speciosus (Unio) Lea-.--.....-...---.---- 778 Soleilleti (Unio) Bourguignat............ 862 | Spekii (Cameronia) Bourguignat.......-- 909 SolenaiaiConradizessss-4- 22-24 ee= 506, 514, 655,933 | Spekii (Iridina) Woodward...........-..-- 909 Solenidea (Anodon) Sowerby .....-...--- 930 | Spekii (Mutela) von Martens...........-- 909 Solenidea (@Miargaron)uCare seas: eee sence 930m eSpekain@blatinis) lease sne nes see ase 909 Solenoides cylindrica (Unio) Rafinesque. 773 | Spekii (Pleiodon) Woodward .-......-..--- 909 Solenoides (Loncosilla) Rafinesque ...... 862° | Spheerica (Quadrula) Lea ..--..-.---22..- 781 Solenoides (Mycetopus) Sowerby-..-....... 935 | Spheericus (Margaron) Lea...-......----. 781 Soleniformis (Anodonta) Benson......-.. 656 | Spheericus (Unio) Mea: 22... .2-22 21-222 781 1038 Spheniopsis (Quadrula) Morelet.......... Spheniopsis (Unio) Morelet ...........--- Sphenorhynehus (Unio) Fischer and GHOSE ecg dooananssundesodosouAeaeegpocce Spillmanii (Margaritana) Lea............ Spillmanii (Margaron) Lea ............-- Spillmanii (Strophitus) Lea ............-. Spillmanii (Unio) Lea. -.-..-..-..-..-.--- Spillmanii (Unio) Sowerby..........----- Spinellin@Unio) MVAllae == esse eee eee eee Spinosa (Canthyria) Swainson .......-... Spinosus (Margarita) Lea ..............-- Spinosus (Margaron) Lea .........--.---- Spinosus (Shistodesmus) Simpson.......- Spinosusi(Un10) tease aascre ere eeeaeee Spissus (Margaron) Lea .............-.--- Songs ws ((UiawlO)) IES sesccascaosocasedcocace Spixii (Columba) von Ihering ......-..-- Spixii (Leila) von Ihering .............-- Spixila (Unio) Ka4Onbigniye esse sae Spixoconchayeilsbryy 22 secs acess see Splendens (Anodonta) de Cristofori....-. Splendens (Pleiodon) Conrad............ Splendida (Iridina) Chenu............... Splendidus (Lampsilis) Lea.....-......-.. Splendidus (Margarita) Lea............-. Splendidus (Margaron) Lea.............-. Splendidus (Unio) Lea.............-2-.--- Kombat, (Gey) Crmebin oe sedcoscucoseaoce Shouse ((Mive))) N@wal goessocescaucocsscdues Sjowbushvisy (WWpoukoy)) JE(SwWOOs -oaasdgecasasedosnss Squalidus (Margaron) Lea....-.-....--.- Squmalidusl (Unio) ease tees eee Squameus (Margaron) Lea..........-.-.- Squameus (Unio) Lea...........--.--..-. Squammosus levis (Unio) Heude........ Stabilis (Margaron) Lea...............--- Stabilis (Pleurobema) Lea.........---.-.. Stalbiligs (Wim) Ue es eee eee Stagnalis (Anodonta) Bose..........-..-. Stagnalis (Margaron) Lea.........-...... Stagnalis (Mytilus) Turton.........2..... Stagnalis (Unio) Conrad ............----- Stagnorum (Diplodon) Dautzenberg..... Stagnorum (Unio) Dautzenberg.......... Stapes (Margarita) Lea........-.......... Stapes (Margaron) Lea....-....-.-....-.. Stapes (Quadrula) Lea................... Stapes (Unto) Wea s sae saeeeeeeeeeeeee Staudingeri (Mycetopoda) von Ihering... Staudingeri (Mycetopus) von Ihering.... Stearnsii (Unio) B. H. Wright ....-....... Stegaria (Obovaria) Rafinesque.........- Stegarius irroratus (Unio) Peetel......... Stegarius (Unio) Kuster................-. Stegariusi(Umi0)Sayenece-seseeo scene eee Stevenianus (Unio) Drouet .............. Stevensil (Hyria) Wea... ...252225.22255.. ISLEVENSIig (UnLO) Lea a aaeeeie ree eciscne Stewardsoni (Margaron) Lea............. Stewardsoni (Truncilla) Lea............. O wT x2 1 09 ~7 HI no ow nn or) a=) So oO SD So > INDEX. < Page. Stolli (Unio) von Martens.............--. 771 Stonensis (Margaron) Lea.....-.......-... 705 Stomensish(Umio) Mbedseee ease eee ace 705 Stramineus (Lampsilis) Conrad.......... 538 Stramineus (Margarita) Lea ............. 5388 Stramineus (Margaron) Lea.-..........-. 538 Stramineus (Unio) Conrad.......-.--.--- 538 Strebelii (Anodonta) Lea ............---- 920 Strebelii (Glabaris) Lea ....-...-...-.---: 920 Strebelii (Margaron) Lea ..........-..--. 592, 920 Sore OOM (INO) WEP ococsaacoonseancccese 592 Striata (Anodon) Heude....-.......-..--. 638 Striata (Iridina) Oken .....-.--.-.:.....-- 903 Striata (Obovaria) Rafinesque -........-- 603 Striata (Pleurobema) Lea ......-......... 762 Striatissimus (Unio) Anthony...-......-. 764 Striatulus (Margaron) Lea............--- 719 Striatulus) (Umio)) Wea 22222222 -s2- 2 sane 719 Striatus (Margaron) Lea .............-..- 762 Striatus! (Unio) beara seee ene ee eee 762 Striatus) (Unio) PReeV.ersss-en ee eeeeee nee 781 Striatus (Unio) Sowerby ....-........-... 548, 670 Strigillatus cylindrica (Unio) B. H.Wright 773 Strigosus (Margaron) Lea -....-.......-... 732 SUREROSIS} (LONGO) ILCH socsoccososoudacsescs 732 Strodeana (Pleurobema) B. H. Wright... 761 Strodeanus (Unio) B. H. Wright........-. 761 Strophitus Rafinesque......-..-..-506,514, 616 658 Strumosus | (Unio) pleasseeeeeee ee eee eases 729 Stuarti (Anodon) Sowerby ...-...-.--..-- 892 . Stuarti (Margaritana) Peetel..........--.- 892 Stuarti (Unio) Sowerby ..-..----.-2-.-.-- 893 Stuhlmanni (Parreysia) von Martens .... 846 Stuhlmanni (Spatha) von Martens......-. 900 Stuhlmanni (Unio) von Martens......... 846 Styganodon von Martens........----..--- 929 Suavidicus (Diplodon) Lea .............. 876 Suavidicus (Margaron) Lea...--.-..--.-- 876 Suavidicus (Unio) Lea.......-......2...- 876 Subeequilatera (Spatha) von Martens.... 899 Subamygdalinus (Unio) Drouet .......--- 862 Subangulata (Anodon) Anthony.......-- 644 Subangulatus (Lampsilis) Lea .........-. 556 Subangulatus (Margaron) Lea .........-- 556 Subangulatus (Unio) Lea........:....--- 556 Subangulatus (Unio) Sowerby ....--.---- 560 Subcarinata (Anodonta) Currier......... 633 Subcircularis (Anodonta) Clessin........ 628 Suberassa (Dalliella) Lea ..........-.-.-. 833 Subcerassa (Margaron) Lea ...........-.-. 833 Subcroceus (Unio) Conrad.............-. 740 Subecylindracea (Anodon) Sowerby....-.. 633 660 Subcylindracea (Anodonta) Lea.......-. 660 Subcylindracea (Margarita) Lea.,....... 660 Subcylindracea (Margaron) Lea......... 660 Subcylindraceus (Anodontoides) Baker... 660 Subcylindraceus (Unio) Lea ........-.--- 731 Subdiaphana (Mutela) Bourguignat..... 906 Subellipsis (Margaron) Lea...........--. 560 Subellipsis (Unio) Lea -....-.-..--..-.--- 560 Subflavus (Margaron) Lea-.............. 722 Subflavus (Unio) Lea ..:-.-....-.....---- 722 Subgibbosa (Anodon) Anthony ........--. 644 Subgibbosus (Margaron) Lea.........-.-- 704 Subgibbosus (Unio) Lea............------ 704, 707 Subglobata (Pleurobema) Lea ..........- 751 Subglobatus (Unio) Lea.......-.....--.-- Subglobosa (Margaron) Lea..........---- Subglobosus Unio) Lea.....--...--------- Subinflata (Anodonta) B. H. Wright Subinflatus (Margaron) Lea...........--- Subinflatus (Unio) Conrad Sublatus (Margaron) Lea SMO TS (Chad) IUCR So sosacacosassgusdcods Subluridus (Unio) Simpson Subluxata (Anodonta) Kuster...-...-..-- Subniger (Margaron) Lea.............-.- Subniger (Unio) Lea Subolivaceus (Unio) Lea...........------ Suborbiculata (Anodonta) Say-....------- _Suborbiculata (Margarita) Lea Suborbiculata (Margaron) Lea...------.- Suborbiculata (Unio) Lamarck Suborbiculus Simpson.........-.--.------ Suboyatus (Margarita) Lea Suboyatus (Margaron) Lea....-.......--- SUbOVatuUss(UN10) ease es sees see sae Subparallelus (Unio) Lea Subplanus (Margaron) Lea....-......-.... Subplanus (Unio) Conrad Subponderosa (Anodonta) Dupuy Subreniformis (Anodon) Sowerby.....--- Subreniformis (Spatha) Sowerby...------ Subreniformis (Unio) Bourguignat ~ Subrostrata (Anodonta) Philippi.....-..-- Subrostratus (Lampsilis) Say.....-.-...-- Subrostratus (Unio) Kuster Subrostratus| (Unio) Saiy-------2---------- Subrotunda (Obliquaria) Rafinesque --.-. Subrotunda (Quadrula) Lea....-.......-- Subrotundus circulus (Unio) Petel Subrotundus (Margarita) Lea.....--..-.- Subrotundus (Margaron) Lea Subrotundus (Unio) Ferussac -......-.--- Subrotundus (Unio) Lea Subrotundus (Unio) Sowerby Subsinuata (Anodonta) Philippi Subsinuata (Mycetopoda) Sowerby Subsinuatus (Anodon) Sowerby....------ Subsinuatus (Mycetopus) Sowerby...---- Subsquamosus (Unio) Lea.....-.....-.---- Substriatus (Margaron) Lea..........---- Substriatus (Unio) Lea.............------ Subtentus (Margarita) Lea....--....-..-- Subtentus (Margaron) Lea......-...-.--- Subtentus (Medionidus) Say Subtentusi@(WUmio)) Say a-ses soe seen cee Subtetragona (Anodon) Heude Subtetragona (Unio) Michaud Subtigridis (Unio) Locard Subtrapezius (Unio) Hanley............-.- Subtriangularis (Burtonia) Bourguignat. Subtriangularis (Pseudospatha) Bourg- Subtrigonus (Margaron) Lea...........-. Subtrigonus (Unio) Sowerby Subyvexa (Anodonta) Conrad...........-- Subvexa (Lampsilis) Conrad Subvexa (Margarita) Lea...............-. Subvexa (Margaron) Lea...--..........-- Subviridis (Margaron) Lea.......-..-.-.. INDEX. 1039 Page. Page. 751 | Subviridis (Triquetra) Klein............- 870 644 | Succinea (Anodon) Heude............... 638 598 | Succineus (Mycetopus) Heude ..........- 656 643 | Succissa (Quadrula) Lea................-- 785 736 | Succissus (Margaron) Lea ............-.-- 785 ZOOM SUCCISSUS: (Wim O) els eae ee eee apa ee 785 (26m Suds" Wana psiliis) ease eee eens 561 (26s sudusi@Marcarom)uea) se. sj.2o) eae 561 ies |) Stoilbs (Wav) WEG. geosccuoulcaesee se ses 561 625 | Sula (Unio) Theobald .................... 678 73) | Sulcata (Anodonta) Kuster............... 642 730 | Suleata (Anodonta) Lamarck ..........-. 622 724 | Sulcata (Castalia) Krauss .../............ 867 636 | Sulcata (Castaliella) Krauss...........-.. 867 6364), Sulcata|(@runcillla) ean. 2 syns ee 520 636 | Suleata var.delicata (Truncilla) Simpson. 520 593 | Sulcataria Rafinesque -.....2.-..).-22.--- 673 835 | Suleatum (Pseudodon) Rochebrune...... 840 527 | Sulcatus (Margarita) Lea ................ 520 Sr |) ISWUCE NOS (Win) IEA cso nsscosococadcsas 519, 520 527 | Sulcidens (Unio) Lamarck ..............- 721 724 | Sulcosa (Anodonta) H.and A. Adams.... 648 720 | Sumatrensis (Unio) Lea.................- 818 720 | Sumatrensis (Rectidens) Dunker......... 853 624 | Sumatrensis (Unio) Dunker.............. 853 900 | Sumatrensis (Unio) Sowerby ............- 859 900 | Superbus (Margaron) Lea ..............-- 830 692 | Superbus (Physunio) Lea.............---- 830 648, 928 | Superbus (Unio) Sowerby ...........----- 830 546 | Superiorensis (Lampsilis) Marsh ......... 535 502 | Superiorensis (Unio) Marsh ..........-.-.. 530 546 | Suppositus (Unio) von Ihering........... 877 744 | Susanne (Anodon) Gray .............---- 924 790,791 | Sutrangensis (Hyriopsis) Morelet........- 580 600 | Sutrangensis (Unio) Morelet.............. 580 792 | Swainsoni (Unio) Sowerby .........------ 667 792 | Swainsoni (Margaron) Lea..............- 667 600 | Swananoensis (Unio) Hanley ..........-- 671 791 | Swinhoei (Anodonta) H.Adams ......... 586 751 | Swinhoei (Cristaria) H. Adams........... 586 648,919 | Swinhoei (Margaron) Lea...............- 586 934. | Swinhoei (Unio) H. Adams..............- 586 924, 925 | Swordiana (Pleurobema) §. H. Wright ... 750 934 | Swordianus (Unio) S.H. Wright......._.. 790 724 | Symmetricus (Margaron) Lea............ 740 Sly | Syammietricus|(Umio) ease aee 5. sae 739, 740 $11 | Symphynota Lea............. 506, 514, 583, 662, 663 591 | Syriacus (Margaron) Lea_................ 695 HOTA Syria cush (Umi O) Renee eee seeet ae 695 591 | Syrmatophora (Hyria) Gronoyius........ 868 589,591 | Syrmatophora (Hyria) Sowerby........-. 87 638 | Syrmatophora (Mya) Meuschen.......... 870 691 | Syrmatophora (Unio) Deshayes ........-- 870 689 | Syrmatophorus (Margarita) Lea.......... 870 919 | Syrmatophorus (Prisodon) Meuschen.... 870 578 | Tabascoensis (Anodonta) Morelet.-....... 616 | Tabascoensis (Margaron) Lea ..........-- 596 578 | Tabascoensis (Nephronaias) Charpentier. 596 798 | Tabascoensis (Unio) Charpentier ......-.- 596 580 | Tabula (Anodon) Sowerby ........-.----- 898 580 | Teeniatus (Lampsilis) Conrad ..........-. 541 533 | Teeniatus (Margarita) Lea...............- 541 533 | Teeniatus (Unio) Conrad ....-.........-.. 541 534 | Tahetianus (Unio) Catlow and Reeye.... 744 534 | Taitiana (Pleurobema) Lea .......-.--.-- 75h 870 | Taitianus (Margarita) Lea............---- 754 1040 INDEX. Page. Page. Taitianus (Margaron) Lea....------------ 754 | Teretiusculus (Unio) Jickeli.............. 826 Taitianus: (Umio)) Weassnss 20s ses eee 744,754 | Teretiusculus (Unio) Philippi............ 812 Taitianus (Unio) Sowerby.......--..----- 602 | Terminalis (Margaron) Lea............-. 689 Tampecoensis (Lampsilis) Lea ....-.---.- 570 | Terminalis (Unio) Bourguignat........_. 689 Tampecoensis (Margarita) Lea.....-..-.-.- 571 | Tesserule (Margaron) Lea............... 749 Tampecoensis (Margaron) Lea......----- 571 | Tesserule (Pleurobema) Lea............. Th9 Tampecoensis (Unio) Lea ........-------- 0/0) |Eubesseruleei (Unio) bene epee eee eee aeeenne 749. Tamsana (Monocondylea) Dunker ....-. 913 | Testa crassa (Mya) Schréter.............. 677 Tanganikana (Grandidieria) Bourguignat 828 | Testudinarius (Unio) Spengler..........- 854 Tanganyicensis (Burtonia) Petel ......-- 577 | Testudineus (Unio) Morelet.............. 702 Tanganyicensis (Grandidieria) Smith.... 828 | Testudineus (Unio) Reeve................ 571 Tanganyicensis (Pseudospatha) Smith-:. HY || WAGONS sopscondGobdn docsossascce 514, 658, 765 Tanganyicensis (Spatha) Smith........-- 577, 578 Tanganyicensis (Unio) Smith ......-..--- 828, 848 Mamniacus)(Wmio)Peeteles sae ssaeee eee eee 541 Tanousi (Anodonta) Bourguignat...-.--- 649 Tanousi (Colletopterum) Bourguignat ... 649 Tappanianus (Margarita) Lea......-.--.- 663 Tappanianus (Margaron) Lea...:-.------ 663 Tappanianus (Unio) Lea .........--.----- 663 Tappianus (Unio) Catlow and Reeve .... 663 Tavoyensis (Margaron) Lea......-..----- 843 Tavoyensis (Parreysia) Gould........-..- 843 Tavoyensis triembolus (Parreysia) Benson Shh Tavoyensis (Unio) Gould...........-..--- 843 Tawi (Anodonta) Rang ...-----..-------- 902 Tecomatensis (Lampsilis) Lea........----. ov1 Tecomatensis (Margaron) Lea ........--- 571 Tecomatensis (Unio) Lea .........-....-- 571 Tehuantepecensis (Anodonta) Fischer ANAK Crosse ae has eee ene eee mee eee ene 933 Tehuantepecensis (Nephronaias) Crosse andshischern ea. va skeee re hese aeeeeiee 59h Tehuantepecensis (Unio) Crosse and IBIiSCHeT Wet ee Ae eee en eee eer 594 Tellicoensis (Unio) Lea ........-...-.---- 751 Tenebricosa (Anodonta) Lea.....-..-.--- 929, 930 Tenebricosa (Margarita) Lea ......-...-- 930 Tenebricosa (Margaron) Lea..-..-....--- 930 Tenebricosus (Glabaris) Lea ........-...- 930,932 Tenebricus (Margaron) Lea.............- Menebricus (Unio) weal eeese seers eee Tenebrosus (Unio) Conrad.......--..-..-- 536 Tenella (Anodonta) Kuster ..........-... 624 Teneltus (Unio) Rafinesque...-........-. 744 Tener (lam psillis)) Leases 2552522 222222. 555 Mener(Margarom)) Weare =2- chess eeeci 555 Meners(WUmio) Mucai aa eres eee eee 5a5 Tenerus (Margarita) Lea...--....--...... 559 Tenerus (Margaron))) Wea ee ss-scse ene. 559 Tenerus' (Unio) Ravemele se eee 1 559 Tenerus (Unio) Simpson ......-...-..---. 551 Tennenti (Unio) Hanley and Theobald. . 842 Tennesseensis (Margaron) Lea.......-.... 541 Tennesseensis (Unio) Lea..............-- 541 Tenuis (Anodonta) Lea.................- 833 Tenuis (Dalliella) Lea..........-..-.--... 83. Tenuis (Margaron) Lea -.......-.--...2.. 833 Menwiss (Unio) AGrayaeeseee eee eee ee ee 589 Tenuissima (Symphynota) Lea.........-. 576 Tenuissimus (Margarita) Lea ........-... 516 Tenuissimus (Margaron) Lea .....-...-.- 516 Tenuissimus (Unio) Lea........-.--.----- 576, 577 Teres (Anodonta) Conrad...........----- 633 Meresi (UNIO) ESAya ses asee eee ee eee 543 Teretiuscula (Nodularia) Philippi --.--.- 812 Tetragona (Anodonta) Lea............... 617 Tetragona (Margaron) Lea....._......... 617 Tetragona (Strophitus) Conrad........... 617 Tetralasmus camptodon (Unio) Say...... 7h0 Tetralasmus declivis (Unio) Say.......... Tetralasmus manubius (Unio) Gould..... Tetralasmus (Margarita) Lea ; 740 Tetralasmus (Margaron) Lea ............- 740 Tetralasmus sayi (Unio) Ward _........_. 741 Tetralasmus (Unio) Say.........-........ 739 Retraplodon\S pis sass ees 506, 515, 863, 869 Tetricus (Margaron) Lea................. 718 Metricusi(Umi0)) Weak sesso ee eee 718 Texasensis (Anodonta) Lea .............. 645 Texasensis compressus (Lampsilis) Simp- MOM Gocaoguooasb0cososuESoseéasesccesesos 564 Texasensis (Lampsilis) Lea ......~...... 563, 564 ° Texasensis (Margaron) Lea .............. 563, 645 Texasensis (Unio)/Tea -..--.-2.2--22..--2 563 Theca (Trapezoideus) Benson............ 859 Phecai(Unio)»Bensones =e seee =a eee 859 ThehidermarySwailnsone sass es ee aanee 775 Thomsoni (Grandidieria) Smith......._.. 829 Thomsoni (Margaritana) Peetel ......._.. 838 Thomsoni (Pseudodon) Morelet.......... 838 Mhomsoniq(Umio) Smith ss-eee ees sere 29 Thorntonii (Margaron) Lea..._.......... 750 Mhoorntombiy (Unio) Pecaeeesa eee nae 750 Thottoni (Mutelina) Rochebrune ........ 906 Thwaitesii (Lamellidens) Lea............ 856 Thwaitesii (Margaron) Lea..............-. 856 Thwaitesit (Unio) Lea...-...225--2222 2. 856 Tiberiadensis (Unio) Locard ............. 688 Tientsinensis (Quadrula) Crosse and De- Wekh bb. gs ee eoehoopsdonedansaccoucancccos 798 Tientsinensis (Unio) Crosse and Debeaux. 798 Tientsinensis (Unio) Heude.......-...... 798 Tigridis (Unio) Bourguignat -....-....... 688, 690 Tigris (Margaron) Lea ...... Bee dc s - 688 Tinius (Unio) Locard.............-.-.---- 693 Tinkeri (Obovaria) B.H. Wright -........ 600 Tinkeri (Unio) B. H.Wright.............. 600 Tombigbeensis (Margaritana) Lea ..._... 619 Tombigbeensis (Margaron) Lea .........-. 619 Tombigbeensis (Strophitus) Lea ......... 619 Topekaensis (Margaron) Lea......-...... 547 Topekaensis (Unio) Lea-.........-..-.-.- 547 Torrentis (Anodonta) Heude.......--.--- 640 Torsa (Obovaria) Rafinesque............- 599, 603 Torsus (Unio) Potiez and Michaud....... 599 Tortilis (Anodonta) Lea.............-.--- 920 Tortilis (Glabaris) Lea ...........-.-..--- 920 Tortilis (Margaron) Lea....-....----::--. 920 Tortivus (Margaron) Lea....--..---.--.-- 718 “Nor B ALES) ((\OhaviO))) IDE oe ecsdassseassesosdas Tortuosa (Quadrula) Lea-....----.-.----- Tortuosus (Margaron) Lea. .......--.---- MOVEWOSUS) (WMO) MYC a eeer esos eels =r Tortuosus (Unio) Sowerby. ..-.-.---.---- Torulosa (Amblema) Rafinesque....-..-.- Torulosus (Unio) Conrad .....--.-.---.-- Torulosus (Unio) Ferussac .-..-.-------.- Torulosus (Unio) Short and Eaton ....--- Trabalis (Lampsilis) Conrad. ........--.- serail align (Wna1O) sComTad ee = as se Page. Page. Abbott, Dr. W. L., birds collected in Ageniaspis fuscicollis --....------------- 395 WoenbraleAsiay year -s ease eee es soe 205 Mepticulleoyeehs aa vee oes 395 ANGFMUTLNG) IbOCWE SS asso eso se Sano o Ses oenee 57,94 TeStACCI DOS seat eee eee eee eee 395 PNCAMPN OPUS scees aes sos oso een ces aoe 28a Aly ptushsssesc a sas eee cce eee 353 Acanthothelphusa brazze ------ ---- ---- 285 lima Ghurs ee Sa ea ee re 354 Camp eee ee 2805 er Nor p lil aes seer ena seen oe eee meee ee 489 Wecilelas soe Se 285 | Agromyza eneiventris.--...--.--.------ 267 Wecentonaltaicusicsesssesees] esas eee 221 Giminiwitare esses sees ee eee 268 hin all anya Seen eee 221 JUCUNGARS- oe eee ee re 268 ANiecentonideekaaecseck= see ceo ssen ne eeee 2 lateralis~ oes a ees 268 Accipiter atricapillus striatatus -----.- 55, 90 Mep tise ase ee ee estas 267 OTS Repeater rar ern eae 213 SObOSaTeste-eik ate aec eee eees 268 ANN C EST a teens oes ar Sones 239 )o a Ator ONMYiZ CES tee cela eee yee ore 267 madagascariensis__-.--__----- PB) jh /NeaROV GUI NRC Soaace ceed Seco ce She SoseSe 489 TNS SS Heese eee Miers (an PAC OrT OS aU OS eee see er ee 367 WiC LOMAS soe et eee te AOD N89) HAN a: a aay aioaa- cee se a eos eee are 46, 86 PAGCTO DMRS te Ss See See oe cess Loe eee See AD Ta pAkA dO prOCGtUS sono oes ae ee eee ee 41 COCCOISa sae ia er eee 407 | Akpatok Island, geology of -.-...------- 148 PATCH EE OMLEMUY See ae ee ese e 3 PAM eeAM ar Cal ev EVO 11S 1S ee epee eee 219 eckananitesse a= seass=ae 23 intermedia ------ .----- 220 NCiuTapnSeGbaeesse nee toe ae era 258 leig puss sss ese eee 219, 220 ING OO ae so Se Sar SRE a ee 486 SuUbtata esses Se eee eee 220 LN GIEEEE eo eas Ee ae ey ee na oS 286 HELO US yea eee era ee eee ee eee 219; 220 AM COLON S1S Sas ae ee a ee 288) le -Al ald ee sae ese eee eens aes See sae 219, 242 TNH H SAVING), coo seco meee cesses 286ml Alibunea sssse se accryaa a aee ona Seen eee 301 Actinoceras crebriseptum.----.----.--- 147 GOrSipes asst ee see ee 301 INGiUNHIES, ANADONSOICRY, Sansas 6 eaSsesacdccee =) IM Zahy SCADA fae eka eee eee tees 301 MYMOLEUCOS hse hss as yaw ese ae 11,285 SVMS bays sey ee eee eee 301 HMAC UM chelate ee see eee HAAG S ie eAl Canton awe cewe ce cen eee ee ees 52, PNG Sits peer tere ts he ee OSS RPA Ced:imid coyessee sa = see are ene 12, 218, 242 Adeleneyrtus chionaspidis .--.-----.--- AeA cedobensallensis jase ose oeenmee ys 218 TEN? RSMAS) Oe SS eo eeo sone 341, 401 enistatansee ieee aoe eee Saees 242 folanchonice essa 402 | ASpoi ae ee ee ee eee 218 Solitons Cae see 402 | SPM ONGT, one A 12 Adenostoma fasciculatum -_-_..--------. 385 | senegalensispacssse ee ea ee 12 4®chmophorus occidentalis. .----------- (BIO) || AM Ken OER. Seino sn coodecacoedead=see sass 153 ie -odallibisepaminensisuss.0 2.2. .en seen OG 207 eA erys OG CS ieee eee ates Meu nrene nee cree 411, 412 Seml=palmaa res a= eee Ai t3, |) -INiOyAroGliGks) —-s55 5 cde estes SebsoeeeesoS 323 VOCLECK Ane ats seme eee ee eee DOU SS me AtL oven Ca Beenaans ached Sle enous hate en ea 52, 81 Afgithaliscus niveogularis-__.-------.__- 228m eeAd! Gtisrallll Cieeeer sea aes Ss epee ees 52 ABDASOG aiheen S Sasa eee SBIR SU SHONSYeS ||, JNKerelegrnn) chee cee eee eae eae 77 chapadee, new species--------- 3871 | Allotrichoma abdominalis -----.--.------ 260 hyettusiees ss sasscsesc ace eee 370 | Alopecurus stejnegeri ------------------ 125 4athopyga anomala, new species ---_--- SOM AA OS aie seta ae eee rs see ee ee 2 Sabunataeascs2 sss se sesso SOM SAD held ysis see ce eee eee ee ee eee 274, 312 ihemamalin @ksiieeee ase a SUM Ape US eee ee ea oe ie eee 312 Noelaius phen Ge usp ase= ese a 50, 57, 94 [SXONUI TAME Seah ee I ei oe eee 312 Ph CeniCuUnUS eee eee 57 GAT AN OLO Si saat ele web Eee eee 311 PAS CTIAS DIS s= e ae see se nee 325, 338, 339, 345, 346, 394 @Gliweslol --eseseccsckScacthoscs 312 GET COM See eee 394, 395 TTMNGIENISC CUS epee es 312, 313 IbuCcewlatricisme==ssee=n eae. 395 MINEKETROO MMOS pesasecess asoacase 312 1As an index to Mr. Charles T. Simpson’s paper, Synopsis of the Naiades, or Pearly Fresh- water Mussels (this volume, pp. 501-1044), was speciaily prepared by its author, the titles in that paper are omitted in this index. 1045 1046 INDEX. Page. Page. Alpheus megacheles -.-..-..------------ 312 | Anthomyza nigrimana, new species ---- 264 PaAracrinivUs sssss—=es== eee 312,313 | Anthophyllum lineatum-----..----- 187, 188, 196 pontederiz Se-2-s\2525- = --- === 312 | Anthothreptes rectirostris -......------ 32 TT DYSNAOWULOSNISs 5 ose cobesc odo sas CUZ) |) Amid n@yOR 5.5 aso ssccorenaseaseeecocuesHn 184 Amauresthes fringilloides.-_..----.----- Gis) || ANTaM obese PROTEKOIN oo esoe ceo teeeees 251 INA DCEO Sas sons ose cose seseeeesd eoessS 41,69 | Anthreptes collaris collaris_-__---------- 33 Amblycerus holosericeus -.--.--------- 57, 74, 94 hypodilus -_-------- 33 Nash ohebls) wane sobecucascos osenesaoseeBCeeT 2 zambesianus- ------ 3 Ammodramus sandvicensis -__---------- 51 PASE IM Se: ease eee ee ae 16, 33 sandwichensis- ---------- 95 Tdi s gee NNN eee ee ees 34 Amnicola cincinnatiensis -_..--..------- 137 new species. ____------ 33 Ampelis carolinensis -------------------- 58 GECtEOStrIS ess ese eee 32 COCTORUING sass eee nee Ge ate On || ANrahM NNN eo moog e eke ob Seco ase eae 492 SHNPPUUIS) gobo gsnokeekacss 66 cnet 51,58, 97 Canalis=2 4 ecole eee 492 Amphispiza belli --._.--:---:2:--------- 51,.58,95 fasciatase enon eee 414, 493 Amphitrite ineequalis -....---.-------- 290 new species -_-.-- 494 IANA GY TUS eeces see seee eee ne ee 329, 331, 354 Subba eee ee 492 SROCI I sees sh sen N eecee 3a4 TWIED SEGUE) = seecos sce sueSsses 492 pallidipes, new species --.---- 354 TON OT Abc 414, 493 DUlehe ras sees eens 304 new species___.. 493,494 DulChricornisyess eee ane OOD). WAC tila Se aes eo See eee 186 WENESOEERHOIS coe coe bac oooonenee 355 bil@ oars 2a Ue ean es eee 186, 196 - ANG OERTIRWIS) Si deaccue coaobecs Sass Secoses 302, 307 bilobata: {e227 eee es 186, 196 Curvadactylusiee==ssassees 307 suesdesii 22)... s eae 186, 197,198 Ananrsialines tellasssss =a = epee 366 SUCS ESI See ee eae 186, 196 UNTER inee nee seen re oe Cate ano G2 i (Ss eA Siaeeeeeee see Sc el bien nana 329, 331, 355 Fillo AGIs) S45 a sekSeoaclos saohos bSeS 45 auUStRIaca =a see 3855 PRON IOKOR NEY ao ase asasen seesacosess 70,85 EuliveSCenshee tes eae eee 355 OSCAS IAC ees ae ae ee ewe en we 45,7 heydenit== 2s eee 355 DOS CHAS = Hts e Uwe was es 61, 62, 70, 85 MasiGOnniS = ees= ee ee 355 CATOMMENSTS ieee ene ee see 45, 70, 85 neomexicana, new species------ 355 casarcay els: ABs Riemer at 209) Any,tuslatristrigcabussse=="555s5—a=eseeee 414 hyip ea ta ene eae wean e ten emits ast 45,71 new species------ 460 CRECCAsE Ee ee Seen Sasa ee erie eae 45) Apaloderma narina) s2s-2.-2se-ses es eneee 14 CISCORSReteeee tea tn ss See awe ee eam 85°) “Aphelinustssece = s2se = eee ae ee eee 400, 408 RUDENESS oeseceo acess sean Soased seca 45 | Aphelocoma californica_-....---------- 51, 77,93 BUS Cae enya ae 45 iN Sall asl See ee 230 CARGIONNIS 2 cotoss Sac SeeS secs osedsSes 45 | Aphidencyrtus aphidiphagus---.---..-- 399 TOWUDKCMN ot odlsodede Seas Bos Bb aocS 236 laches hehe eee 399 Guerquedullajesessseeneeeeseeces 209 ME SOUTES sees a es 399 THOMA ao SseceesceasaNElaSeEeosors 45 new Genus =e ses-ee 340, 347, 398 stelleris twee Ne oe ces se eres 45 TOSS Le eee eee 399 INMIEY WOH os oocas olesesos oSeede sos cons 382 schizoneuree _---------- 399 ANSIEKGIOES) Sooo cncn ysed Seoseaeaee Heceeo ste] UD a0 siphonophoree- -.------- 399 INGANNTNS oo asces 6 odascte seed sect cose 481 SWC) S Cire ae ee 400 digitalis ees eee 48il))|) JAtp nid dee 22-2 Sass ee eee 323, 398 IAT CISERON Ae ee eso oe eee ee enn eee 42) 7()ea | eAphisibRAaSSicee ee sass eens 399 PIS AS en eo Ey Che een Tletss). | JON ROU 2B osaseseeboséoscecs 339, 345, 370, 383, 394 JNA CHEK joRWOMU AS ou Sooke Son see ee eeoeS 351 albertins Scene aes 384 JG hoon IGlWlS — 3 oeSooasascokoeoe Soeen Sdoosn 15, 30 AMOCNUS) eee eee 384 erythropterus: 5-----22--2- bl angelicus: | 22 y2 si ereeceea 384 SraciirOsuricmey sees 30 anniulipes ses eee eee ee 384 liberiensis -- 31 apicalisi.. 2522222. es eee 384 PARKOHbIS) Soo5conoeseh seep oKKs 30 australiensisess= 42s ee sees 384 IN POnCUMUS eases eae 15 brunneus! 223. eee 385 latiTostriS pases 15 Galifornicus== ees -=- ee eee 385 MIR OTS ees Sal en peer 11, 15,31 ceroplastisas sss eee eee eree 385 Anepischetos bipartita_-..-_-.-.-----.-- 414 Chry.Sop eee ae eee 378 new species- -- 482 cockerellisc3s25 ee see 385 MewaSCNUSsaeeessaasa eens 482 coquilletti-] saan 385 Anhineamritass asap =e serene ee era 238 dactylopiiass{e eee arene 885 UNM AUP OEM kEs)5 ycede Conseco enobea So OsacKSSsece 238 Cruptoric sche ose eee 385 SAMI GO EUS Ose seed eee oe ar One ree eee 341, 405 flavicepss 2. s 2525s eee eee 386 ceylonensisseresseceee seen 405, 406 flavus.2o5 ee eee 356 JAn oma acai assim eee am ae ete eee es 273, 300 fuscipennis = 2-22 =-ee eee 386 Anserallibironsee ste. ss eeee eee eee 45,71, 86 hederaceusse. 2 eee eee 386 gamibeli i. a2 ee soeon= 62 immacuilatus=ee eee ee eee 386 INDEX, 1047 Page. Page. oliycush) OhNsoniteee. eo een eae BBG AASili dea Saas nee sere eu ieee penne 251 SCAT Re ee ees een a Ane te S SSGm AST Onwal SOnibanis sees eee ee eee eee eae ONO) IK NWOMGIED cos osseas cosas Sacacs Bole MAS DICIO UU Sharam tille=e see 386 IO WRAST MA Seca Secu 387 var. citrinus. __/_.. 411 TMEVOWINN NS satcosesestacesooCenSs 387 Cithi Cola ee ee eee eee eee 411 TACDICENNOIS Gos Goodes saceeeussas 387 Coxnticalis asses 383 SIV SXCND as Se eS cin SEE SERRS 304 Gy Oni aoe. see sae Se hoe aes 411 MSPS eae eye eee eye 387 A OMEN iN ese eet eee eer ee 409, 411, 412 OMRACHE na- see ceases cesses 387 DELI CIOSUSHeEe tess eeeee eae 408 OREAONENSIS eee eee 387 SOCEO LUSH sess eae ase 404 POUL ch ell seen ey eee eee 388 Giliicey Sec Se Slee cee os 404 OWUN AINA Hos sae Sese sees 388 | Aspidograpsus typicus---..--.----- .----- 279 DUNC BIDES --2= ons Ssh besoscas Seoul ASIC OpMOROld eS reper eee eee ae ae 113 HERIOUIS See eds Groene neec aaa 388m eASpidoptenabusckaies assesses ane 270 EOWA SINGH Sees See eens BOB MEAS GavCl Cl see eee aya nee eae 12], UNINCOUOT ea ere eee te Se see ee 376 | Asterodiaspis quercicola....------------ 404 PATIO PON ere eet anions nn eee eee e AAS Gero pesuSie eee eee eee ene eee 4 er de TNEVORIEYNUS eons Se eeee Gans Babee lit PEIN Sse ot seh a ee tees 405 ENGI ame eee ie oa Senate salam DDI eAStreanbe lapse ere emcee eee ey eee 189 culo T Cull eee een ee eee ene (eo) ANchaneee), lolly oo so6. ebb soos eedass cone. lis, IG ey TOUPAROIERIE) cco Sack Ros bbe bes oa CARAS) hintolamelllataresssmae es ceees 190, 197 @lntyj Scab OS eee eee 116411390 TMeLTaygl ania Cll Cae ee ee ae 190, 196, 197 ChiyiSAGbOSwes eas eee enon = DUO SAS bReS 1 Cl cepts aes ears ae Nay ec be Seo 186 HHT eG ee es Sp Se a ae RE PAE ONS mene S ee Bese a on ecesoeSrose 187, 188, 189 MTP ETIAliS ease ee St eee 47,90 astreeiformis -__------ 188, 189, 190, 197 NeWeoryj plas ee es ee ee all oye Ne Hotes ae at aies ek eee oS 189, 194, 197 NNO alla kee eee eee ae eee 213 Gbehavrs eye seen ee Ae es 189, 190 INTO) Gea Ee eee ee eee 73 linteatarese a= 187,188, 189, 191, 196, 197 _ANTPRRRO BS occ n ns bod Bees coos eoeses=ceese CBee! SHENG) manylandicaps= == === see aaa 190, 197 SC ube ais eee SISTING DLO yaa ee ee eee eee cee emer 194, 196, 197 ANTON NOOR ec ee aes Sane eno ae Sse DE wAStrhelianoad lam ataae=e sees ee eee 185, 186, 197 lagopus sancti-johannis 47,55,73,90 | Astrohelia ---..-.------------------------ 185 AT Chin Spee eae seat eee aaa oe 335, 342, 368 TOPHUTNAYID, 52 Sonne Sa Sose 185, 186, 197, 198 OCOMPAHUIB scat dscecaes teencnee Gils) |] JASONS). oso o oosoce cose Se et 190 JN@OCE AIS WIS. = sso sedosn pee coe cone esse 2 rTM edits yal tia GL Ce ene ee err 190, 198 Worchytasmpasit wlvacs-s22- eee ae 549-2 253 | Sexnadiatansst eles ss neeelOL OT Arctic Trenton, extent of the _._------ 1) |) NSiebbe joenib wan op WONG: 35 obo oS oes coca eSae 73 Arctostayhylos pungens...------------- 386 | Sspectaloilige is sco kee soe here 26 Arctus arctus var. parauoxus ____----.- 309)9)) “Atstymmachus\): = 222.522 - eae ee = 2 8d9) 340009 Nreleayabhl Ca pillareee sean anaes 238 | OIG CUS pee see eee eee 389 SRT Cli been ee ee ie, SO. Atari bal pleuralige se aes ee eee 250 Stellariss-saise ware e oes anes (| J Niwetleren Olli) os 2 ane ea acne o saco see 292 NWAUTOS COTS Bae ees einae eee Seminar ene 86 | LOLMN Gab Sse eens 292 XSELTUD IN O TOO Cl dyaese teers ee ZBigli MACCLOLMISICROSS| Gyalqee ee ae renee 241 BOCIG eee eee RSS 237 Ditboides essa! Mees l ewes 241 Arr elitaspOGIGeDSe = sees as eae ea BY (elivad Galaverp ban lots 2) eee emer eee ale eee 1 eAT Cola pOdiCepSee ss = ease enna 237 GiaenOsis\o here aneeen= see 2 LUG bey ESE ol ON marge ene Beara 237 | Antherinoidea, diagnosis of ------------ 2 Kah OP OC ae ase ae ere ee 235,287 | Atherinopsis californiensis ------------- 1,10 Mrremonopsistrabiceps= 55:59) assesseeee 74, 97 osteology of 3 ING AS IAVOV OV alee ON oe Ses Be eeu Aes 32,04", 408 | Athy roglossa nitida 2222-22252 552-----=- 260 INIPETSN SAO) NMS sete OS soe eases BAe sy Alle {lo SN ROV OF HIS 44 Se sae eee SEE ee sere oooceS 341, 404 chionaspidis. -.--. ..-- 408,409 COUNT eae ee a aad () AeA Aasilonehecolorada—. 25-222 — 825 se AS We AtGTay pA CRE WCSCENS pesca asm ee sae en=aa= 159 new species. .-.-:- 414. SUllourel Oral Sue mes eee eto ee 159 AVS SAR RCH ee ieee SaaS BORse AN Oe eACt FCOnannl GETS se eee ee 17 PAG ACO MOU GUISULIS Ame ea eee SOIT etal apAtt sy, canna Pegs dae re eh eee nearer eee ea) ENS = oe 313 PAC DOIN SI ae wenen erat ae ye eee ee 387 PAD OMETISIS yee ee eee ee esa 313 JNTPUMRO) NOC Boe Smee Sacess Sener osscne 173 margaritacea var. claviger -_------ 313 PAriomiydas ull Sim OS aie ssa oe eee 16 SCA rae peer e eee eee Rete oe 313 USsh’e rks sae ees eae eee GP MONA Se oa aeerse eae omar a ae aetbee Haee seme 274, 315 SING fay Of ON DIS) Aste s eae tes era Aare aes aye 50 Atti Sus Calloei ses = same ae ne sae erates 313 INSCIR Wa, season eee Se AN cee te he er ST Om ANT UShote se se ers eee eae ees eae 108 Cauda tare see ee ees 379 TOSULALUS Hees ee ee eee eee ener 110 Ashmead, William H., on the genera AMT pArUshh ayy CCD Ses eaten ee asetasa eee 98 of the chalcid flies belonging to the ASndanyeyeninhans 22-2. o5caecossoscéabonDases 45,85 Suibtamily HnGyarbin essen eee eee 323 GaUVeCRNNe) ESA occas coscadesencese CHa h) 1048 — INDEX. Page. ‘ Page. | Aythya marila nearctica.-----.-------- CE (Op) |) JRO WARNS seeeesenes sSeccaceamoccenscansan Ge | Biicchare tise. cesses ee seee eee ee 252 lentiginosusmee es sse- === aan GenSO! Claw tats ere ee ee Zoce both ometop US a= esa 42 Bxeocharisuecn sens ee eer enema 329, 331,356 | Bothriothoracini __..._.---......._....-. 333 mar lattitess yas Sie Rete eee 306 | Bothriothorax-.-_-..--.--.--- 325,333,336, 348, 871 PASCUOTUM assess eee eens 356 Californicuses-seeese-e-8— 371 Baffin Land, Lower Silurian (Trenton) LST ar Seas eee Eyal farnay ota waet sees eens 143 macroglenes.-.-.._---.-- 3t2 paleontology of--.-------- 149 WEA MINES ne =5 5 Sac) een < 372 Bailey, Vernon, list of shells collected noveboracensis- .-------- 372 in Heron and Eagle lakes, Minnesota, OC kena rials ee ee 361 ALY ieee sea a oe oe eoe ares alae Ra NS 136 Peculiariss= =e 8372 Banbatularduchailiaimesssessso ees satars 29 PlaMTEr ONS 372 Bartramia longicauda-.--...------------ 47, 62,88 TLOLUNdiformiss==s== sees 372 IBASIIOSA US Ha sue soe em ene ape ee 21 Val Sani eNS1S as ee 312 Bellerophon similis---------- uate er SG 5 i |B ra Chi1O OC aise see ee 156 Bellerophontiidee ._-.-____.-- ee a a l6aaieBrachyotusiotusr=-s== =e aaa 44 Belvosia luteola, new species ------ ----- PDO) || PEST ELC IVa] © Gil Clee payee 14 I BXSRAEKGR AMM Gear a ene ee ty ier, eas 335,365 | Brachypodius -__-_- Pe Ulepaaauvna es 14 atlce rally er siete nets aaa 365 | Brachypteracias leptosomus _-..-...--- 242 floridanus, new species---- 865 DittoldesHas= =e 241 Berenicornis leucolophus .-------------- 28 | Brachyramphus marmoratus -_____._-- 43, 81 Bermiclastvonquabasean sae eens se eee 454 BTA CH yaa rae see ess Seale ee ee 272, 274 Bernieria madagascariensis .--... .--.-- GES) || lee yauey CENOEKOIGINSNS 5 os Sooo oe Gocos bocuee 65, 86 Beyrichia symmetricus.-_.---.--------.- 150 TUfin ees 7 eae een mall IBA OMe} oLKo ls Nea ae Ree ee ae nme See ee ras \O rien ey Aor ap alte wi og © pupae meres se Rar ep 183 d EV OUI eee eat Sty een enie era eee oe SaaS As | exe (0) Oat ey oes Seree deseo acssss nse saccse 416 Bird of Paradise, a new, by Rolla P. Bry.OZ0ad e223 see S555 bias Se eee 156 CUPTIe ses SE ON ay iene 497 | Bubo bubo turcomanus -----.----------- 218 Birds collected by Dr. W. L. Abbott in SVs Oda TANT Sa ee 48,74, 91 Central Asia --.--- 205%; |“Bubonideass (ete a 218, 289 R. P. Currie in Li- | Bucaniides ass sees ase eee 164 beriae sae ns 2)y)) BUCCO Cal yl Sie oe ee eee 13 PROMO WISTS] abies arte ee 319 | Buceulatrix pomifoliella_..........-..-- 395 Madagascareese sso ss eae 235 tauiel lays See See eee 359 Santa Barbara Islands, Cali- BucerostatrabuU sess eae 12 POTN AER ele eee as esas 229 | fasciatus: s2ces ose 2s See eee 12 the Cameroons District, | Semifasciatus sees see -eee eee 28 WieSty Attra) acne eeees HLS SS COT Obi Cleo eee eee eS 12) 28 IBithynisye ss ee Ee ee eee 3145315); SButeo: sos. 25ee fe eee eee ee 5d acan thurs esate ae 315 iborealisicalurus3e— 2-2 =e 55, 90 jamaicensis vollenhovenii -___- 315 lucusanuS = 22 90 OlPST SUT ee ae aaa epee gs 315,316 | jorachypteruss==s—=-e es == eee 239 PAUCIGeENSE sss eee eee 315 desertorwm sss = sees eee 217 IBlaSbo tliat eee pee ee eran 339, 846, 389, 394 POT OR se aaa ee 213 ENG honinor hiss fee 389 | Nineatust se ee eel a eee 47, 90, 92 IN COM ba eee aN Tee Rae 389 SiWalln S Oncaea eee eee 47, 55, 90, 217 TNS OL Gass se eee eee ae en le 389 AAU NEIS: Seeeoeeesoeetossocuss CX) OM) Jat, 00 HON Supe NMS eee ae renee 390%) Buthotrephisisracilists. "oe eeeess- eee 149 THOS EO vee eee NS CI NER IC 399) Butorides\atricapillas.ss2 25sec eee 238 SOMICOa, avi ee ewe ee ONS e 389 | abtricapillusis==:93s-4. asses 238 SOLICO US yaya ee Oren sen 390 | VIEESCENS 222s ee ee ee 74 LVUCCaS) Aa Been a ibe read 390) |) By. thinellavobtusaice se ssses= eee eee 137 BLS Glee ks eee eee aot uae ee a era 15) |) Bythocyprisicrantuies=ssseesas= sss eee 151, 173 FL @ GOL easy pees fa ee aaa ap oe 14515.) Calandrellajacutirostris 22 sss s2 a eaee 219 Syndactylayssseee es eee eS eta 15,31 brachydactylajaaesseeeseee 219 Ble pyar See 2 he eee nee aera 336, 343, 373 duikhunensisi 43525 219 manrsdeniisss ssa sees see sees 373 | tbibetana esses = see eee 219 TINE Kel GATS epee eee ee en 373 | Calapoecia canadensis. .--..--------- 150, 151, 154 CORAINUSi2 aes See heer ME oto Calappas:= 2322 ase oS os ee eee eee 296 Bom byliidees sese ea seas See ee RT 251 | aneustatacs os eos See eee 297 Bomolochaavietatasaeseees saaese eee 414 | DOCAR Ee sae eee eee 297 new species.._.....-.-- 494 | Palloidesse ase ae eee 297 A BYOYay oNiz ramen eG Tse we sf a 42 ferro HN bey eran ete a NN ee aba 296, 297 Borboridee sia eee eee 269 ; Sranullataseeee = ee ee eae 296, 297 Borboriwds 5 ese eee 269 eran atuseesee= eee 297 TOES See Sep aaa cae ea 269 pelit ose eee eee 296, 279 INDEX. 1949 Page. | Page Calappa rubroguttata_......_..--------- 296829 7alla@arcerse alll spe ce ean oeareee eet 207 Calappid eae sas eee ono ee eecincee enc 273, 296 sranulatustesssseee re ree eae 297 Calearinus lapponicus -------.-.-------- 95 SVADSUS2 senese ass eee Sees 78 Calcariuslapponicuss----4. 2-4 -sse-> 50 has tatusiee ee eee een 290 Calicalicus madagascariensis --_.------- 247 | mMacELochelOsps==s-—ees eee ees 295 Galignristane natn aeree een ee eee 46, 54, 73, 87 MAS CATON Case eee eee 299 California, new fossil species of Cary- (MESS OM ola Was Caos nee se ogee 278 ophyllia from ---..- serge ee 199 IMM US eee ees Beene 279 new variety of MHaliotis OLN ayenibiaN Ss Wen 293 THRO) OT easy SA ere rae 139 OANA IbANNS oo - ob esses escn one 281 CaITORMICNSISH= eae en essen Se 141 PLIN CCDS eae ae a ae a ee 297 Callacanthisvourtonie==-2--5- 224-8. ee 226 TANT Seed eae eS i 299 (GaillipMassaeseeae see es eee ea aS 308 TivalOs Sree soe eee eee oe 286 Giadematass= == seas se ses oe 308, 3809 LOSEN ATS Ree ee ees ee 298 PUN TAN apnea een 308 TROPUNAGENHOIS oc cagesoeeeonsoaeeees 292 (Ciiliine nna sisi les) Sas = oa ee ee 274,308 Sagittarius sees saan eee 298 @alhinectese 2 lases oe a cesses sate eases e289. 290 {CI OMC RUN FDIS Stas Sosa bbobde sone 288 DOCOUT, bp seers ean ee 290R29 hel Cancridcopieca saan s ye couse eee 272, 292 Giaicanit huis weee sess seein 290 | Cape Stevens, geology of _.-.-...___.._- 144 SACI ALOE ee een 290829 eal © ALLO nl Geeks aes re ieee 13,29 eyeing RAS) sok 5 asst noresos POU, aL: || CeyommbonwtlesiGlesy oo ooo cco tas ooSose sonsee= 241 rene NAMM OS a= oes Se eee oe 2905 291a Caprimuleustenarrabuse= sass see 241 tumidus var. gladiator .--..- 2910)" Caradrina lewucorenal 23925 2252s ee ee 414 @allligpteromare meee eee tees ete oa. 402 | new species. _____- ATY Sze Ucbataee sae weal ACN OC hey abet ep ar hee cans ee ae LSORAS Re pera 2 Sex cuibtatarse ene one ANAM Carcainalisicar can alls see mess ieee sania 51,96 LEStaceayes sesame a deze 403 | igneus_-_-.-. the Sas 51,96 Callipepla californica __..._...._...- AD) OBL G1). 63): \) (CEWRGHISONIOE) noes Soca boo aces cocoa ooLeoae 276, 277 sO rllanwhvoriG aoe oe sere oe NE ee ee 255 arm atimiee ses geen oe Seen 207 Callliiptenomaw eas en ose eens 325, 341, 402 PRUE MA bya. 2646 sondabe SacSods 277 Doub babe pers seen ee ee ele 402 a Carduelistbuntonimeec ss tes sane 226 quinqueguttata .._____...- 4027|) Cariacus columibianus 2=-- 2-2-2. =--5--=- 99 Semou balla aes meeete 402 | SVL SUT TU S ere ee a 99 tes taceay sss cS lee ee 8 ANB) || CENCE eres ao onion reap Aone 274, 310 C@alobatastasciatams ene s assassin ee Zips BOanidinayyrssseaean, Sateen own se wee ee 318, 314 AIS Cisviet ste eee et era 257 KOSOCNSISE esse aaa e te aes 314 naa TM aisheateet tes Arne cece age tate he sy. ||\ Cenrngriclecp oe ets ie oo 418, 480, 433, 446, 451, 464 @arlocerinushesse es Sse Se hee 327, 330, 348 BIC ONT S eee ae Se ae 425 Honig ants sees eee a 348 | CMC ONS ee Se eee 414 Calymmene senaria. ._.... -...---------- 149 new species ------ 458 Cambarus clypeatws 22. - -.-225...5 222.22 122 albipennisa sees eres aera 451 GUIDE SIS Vee we eer a tin so 123 APONAAT AS pe a ee ee 23 STEALS ese eesti Hates sent Ne NS 122 atriferarce season tee omer 460 DIlOSUSHS Scene ha ee ei br OLUS Camsee ap een eee 414 Camercceras proteiforme .____.___. 149, 151, 169 new species ___...- 447 Cameroons district, West Africa, birds abrOpUlviereaa see eee 413 sESTS() TDR aE ep eerat S Ane ow os Ue Rp 11 new species __- 428 Camipephagidae asses ees eee 247 | AUG TIS rere eee eee 443 Wamimpe thera esses econ a) aaa ees 14 | lo1C Ol air: 1 SABES eae pe eee son 422 Dermiis tases ses eae Ha | DILAS Ca basses ere ee 433 Wampome trav s sso hh aa eae ae 101, 105 | bostoniensis -__-_-_-- 422, 431, 432, 434 ane) laces ee 101, 102, 103, 105 ibrunmMeloeray sees ae 443 bilineata, new species - ____ 102, 105 CoBIS Sas aah eae 439 cinctipalpis, new species -- 103, 105 GCESINS Rewer eel eons 414 fraterna, new species. -.-. 104,105 new species_..._-.--- 457 LOYAL) CONE = es Ppa ta ye a ae Ss se 104, 105 CATIOS US zeae coin ea 414 minor, new species.-...... 104,105 new species. ---_--.- 449 Campothoranes sis = = sen esas a caer sees 14 GURPICOIOWP Be eb25 Geocos akesoase 422 CAROL ae aes Ey A. 29 CO Saban Sse eee ene yee 425 TOSIAANIS HOI — Se oes Base 14 compressipennis.-.._-----.-- 413 Cancer OSOT ese eas re a ee ee 302 new species 429 Cataphractusieesss enna aes 311 COntACTONIS tees a= eee ere 413 elibanar tus ye seeos ase en eee 306 new species. ---- 421 COLRGU Sats a ee 292 Aakotaes oes ae eee ree ae 413 CUTSOI Ssh 2 eee oe ee nee 275 mew species--..-.---- 442 depressuss: sian 2 ee ee sae 281 GLiform She eee eee eee 413 ORCA VALS aes s aU say ee 303 new species.------- 441 1050 INDEX. Page Page. Garneades' dissona_.-..-2-5----22--22—--- 418 | Carneades ontario, new species. .----.-- 440, divergens| Ses see eee eee 456, 457 perexcellens__--.-.-..-.- 452, 4538, 454 CnLer iS sae eee 418 PINGATL eee Eee ee eee 414 new species.---.--- 427 new species._...-...- 451 excopiitar- eens ese een 413, 424 TOMENRELU ROWS soso coorne soos sesee 421, new species-_-...--- 423, 422, 423, 425, 426, 427, 428 exculltan ao sete ee ase ees 413 DUST On SS sae ene eee 413 new species....------ 24 new species -------- 419 TACtOLIS eee cs ee eee eee 414 Tecmo Gull apeeeeer Eee eee eee 458 new species -------- 456 TelaRUS Srey See See 413 falerinaige- os. eke ease ee eaee 413, new species._-_-.-..- 432 new species. -------- 29 Selemish 22h esi J sae eyes 414 HaVvAdens)s esses on eee eee 420, new Species ------ -=-- 459 AMaviSCap laps se nee eee 413 Sessilo 2:55. 5 aee eeeees 413 new-species. -_-- 22 new Species -.....---- 431 OST Ta! Sse ee 414 Sticmatalisaeeass eee sae 413 new species- ------ 454 new species.-.... 425 PTA TS eee en ee 449, 450 TERMeSSUS = sane s ae ee 413 SUDO Fe yas Ga eine oA A AE crs Se 413 new species. .-..-- 426 new species.--.--------- 437 LOPNAariUS eee) ee eae eee 414 Bula Gaya Sie eye ea Seeman 455, 456 new species...-.--- 444 hennriettastesseon sess e eee 414 LOrrenus 2220s ous se eo eee 413 new species-._--.--- 452 new species____.._-- 436 InoMenonewaN ee osoe Sets SSScS 421 CeLritOrialseas se ee eee eee aS INOMOL NAPE), sao anea doascee ness 413 new species ----. 436 new species- .----- 443 testula:. osteo. Sos aa eee 413 idahoensise=seeee eee see 455 MOWeSDeCICS i= =e === 440 inculbitase sess eee 413 tessellataye ses eens 423, 446, 448, 449 new species.--.----- 435 tessellloides}=a=ss2 ens aaa 469 Tha ifey hb. cape ean ae MENUS A Were Aer ale, 453 TOCOVE oss 22s Se See eee 413, 422 IMGPICALE nee ek ae ee nae 428, 429 new species -_..-. _-_. 33 LINGUS eee ee Pee nee 414, 446 vallus 233-2 See eee 413 new species---------- 446 NeW: SPeGies!- So 2e- eee 430 UOC ES ne ame eames ee 418 WEWONCHICDS S255 5-secoce cece ccs 414 new species ----------- 438 new species = 2222-- 453 Ikenswallleioe sane rss ase ae Al\4 Viclleripeninis == =a = sae eee 423 new species ___-_-- 443 | Carpodacus erythrinus 25-222 --2-2225.2 224 las cam ce seene seen 413, 440, 441 frontaliss.. 22 eee 231 new species--__.----- 439 ODSGUGUSIE Sse se eee 231 para rad See ee eee ie ee 414 mexicanus clementis ---..- 231 new species. --.-.--.- 460 frontalis __. 51,56, 70, 94 VOW ee aoe eel phe pete 413 | purpureus californicus.-- 51,56, 94 mew Species. - 2-2. .=.-2- 422 SENEIRWAON Al sons ce cScosmocoS 224 IATGCOSLE US ee eee ee ee 413 | Caryophyllia arnoldi, new species_-..... 199, 203 new species-__-_-.--- 433 lineata eee ene Spo TID NTS free cretet eer 414 new fossil species of__.... 199 MEW SPECIES Basse mauaes 450m |e CasanrcalcaSar.cass= n=] 3 eee ee ee 209 MELASTIS MMA ae eee yeaa 413 Castor canadensis. sees === =e 99 new species .--- BOB | Cate Sas ee SBS els slat ea aye eee 99 IMESSOVIA Sse ese ak el 432.5 .Catabom baspynasiilee sess aaa 371 ABA 435, 4805431 4005/4094404.) | Cabocalaelectaresss=255en eo enetes sae eee 367 TOTES Ve eee eee ey a eee Adie | Catometopas=a ses aes n ee eee 272, 274 MeV WS See eee ee ee cee AIS) © atte S252 2 se Se Se ee ee a ae ee 99 new species _------- 424 | Caviasobaya-.--. Saas eee oe eyes ae eee 79, 100 MCOLCLISi ates eA Wea aura 414 | Cecidomyia salicis-siliqua--.-..---------- 396 new species--_-_-.---- 446) | i€ecidomyid espe ae eee 396 TV OSV CL a Sl Sey AS Wes Bh AI3418" |) \Cecidomiyiid ce as eseee ee ee eee 249 new Species - 222.4222 4? (al Celaena renie erases = see = ee eee 366 MOGCUUTEOT MTT S wee eee eer 414 | Central Asia, birds collected in__.-._--- 205 new species --- 445 | Centropus senegalensis _.---..-...------ 27 NOL CICA meses ae eee eee 414. ‘Ceophlosus|pileatus!2--5. ee ee ee eee OOnOL new species. ..-..--- Abdel Cophalopodaseses c= eae ee See eee 169 obeliscoidessseaeeasesee ees 4520 Cepphusicolumbaresees2=4s- see eeeeeeeee 43, 52, 81 Objun cater eeees see eee ANA @eramoporlidsesses se. sseee eee Eee eee 156 new species _-.--- 448 | Cerapterocerus..-.--.-.---. ---------- 341,347, 403 OChT Og aster ee aaa ae enae 28 Horidanse==--eeeeereee 403 ONCATI OS aE ss ee ee ed 413 latevittatus. -.---------- 403 INDEX. Cerapterocerus mirabilis ___--_...----_-- 403 DUNComMIS esses se 403 Ceratosymmnaatratayso so sseee eo oe 11,12 Ceratomyza dorsalis)-222--- 2-2. ------ 269 Ceratopogon punctipennis--_--_---. ------ 250 SCG aK ss ee ee ee 250 Ceraurus pleurexanthemus ._-.....--.- 151,174 Cerchneis tinnuncula interstincta_--_.-- 210 Cerehy Siu See sess sansa 335, 338, 345, 379, 380 Cauda tars team ems nel dea s2 379 elasmoceri, new species. --- 379 ALAC CUS Ee ea eerie santa ee 380 hubbardii, new species----- 380 TGEIAE ss GSee ss SoeEe ee eee 380 palliciipes Ms teeen= see a eee 380 Dulchricormisess-seess sees, 355 tenebra buscar eee esa pees 355 Cercobelushes loys oro see ee re 342, 347, 408 FNL SOULS es ee A ie 408 Weroplastesye- a ssencc so ce een seess Seca 387, 405 AETMIST SO en eee aoe aes == 385 cerripediformise=--2-2--5-— 387 Ceropsyllarsideroxydi 4252 =) ene ae 411 @erorhinca monocenata_-.- 2222-22 43, 52, 80 Cerostomamadiatellass.-9= 2) ss 5 sees te 364 Certhiamectirostrisi=2--=- 2-252 --5---- Bz SO vali aT) Prey eee ese Mee cea 246 Ceryleialeyons:.-52 225 228-0455 See4 74,91 Chesturanpelaci Games. ssa eae eee 92 Delaseical ss ss2 aoe es ene eee 71 (Chalicas pis sass ss ee eee 336, 343, 371. POLS aN G Sita e umm Tota 371 GChalcidshicsria-sa 5 are ee 323 belonging to the sub- family Encyrtine, on the genera of, by Wil liam H. Ashmead. .----- 23 @halcid@id casas ese ener ates eee ne 323 Charadiidses 22-222. ee 206 Charadriusidominicus: 2... 22.2222 -2 12. 55, 73, 88 IQENTODUIBY, = costa Saedoe saeuce 47,54, 73 TMCONS 1 CUUSHE eee eees ae 206 ANNI OT meee aye Se ene aires 54 MOTE WS ie eee eee 54, 73 pyrrhothoraxsss-2-sese- 24 20G;204 Squatarola =2es-s 24-25 47, 55, 73, 88 Charitonetta albeola ---2--_ 52222222. 62, 85 Chaijyjbdellaye ase 2 es ee 2898291 TPO ONE hs ae wa ee eae 291 Chaunonotus sabinei._............--.-.. 18 C@heilodipteridszess=-2-- s22-- ee 114, 115, 116 Cheiloneurug mess: 25 ee =e 840, 347, 400 alibicornio meets ees 400 cupreicollissesees eee 400 Gactylopil esas ae 400 diaspidinarum _-__---_-.-- 401 Guise eases 401 HORM GS US e ease ene eee 400 1 DUO WU RBIs Sees oom oeke 401 MisTeScens pene me eee ene 401 (OP AVSNDUG Noy ah rs ta a ea RN i eg 227, 228 Cashimeriensistes= sae ees eee 227 erythrogaster. 22-2: 225--)--. 58, 97 MADAM SIS pss ee a ae ere a 28 AUTO Cases ates ate nee ey 228 (CISINIGIONEROIEY,. aaa Stony eens ss 228 Chrelivdirawet rem es acess hele Sones ae 2 Chelydnidse esas eee ae Chenalopex aegypticus Chestomorpha biformis new species-.-_. Ne wr Genusesssseaess 335 Chilodap ter uses sess sates 2s emma Chilone ryt spe oases ees eee GUpTrercolis= sae ase eee dactylopiigesssas2- 2 sso see maculatipennis Chionaspis eugeniz eraminis) See: Salicig A Gea cure ose ease Chiroxiphiavlanceolatan ene Chilorocich|layexee eis ae SL eay elem ee ty Chlorodielll aes ss eens eee loneiman aes sseneeeeeee Sects lon gimantis:=aesseee ase a = Chicrediusicomvyexushasss=s92-n ee aeee = Jlom|g-imaamit Saye eee eee ae ees Chloropstineur ahaa ern een ee a trivitattareses setae eee Chondestes grammacus strigatus-. 1051 370 , 343, 370 1138 250 69, 74,97 30 286, 288 288 288 287 288 390 267 51,57, 79, 95 Chordeiles virginianus henryi.----a.--- 64, 92 @horelaesa ses oc) se ea cee Sadish Ae 340, 347, 400 Maiva CIC tale =e eae eee eee eles 350 WAGISH oe Se Ses acee eae ead ee 361 CHORTa Resta ree™ mas ean ee ete 400 Chiysistiniid ales sameness ean ae 360 Infidus: ==. --2)_ 2-2. 3824,38265322) 359) 360 Chrysomyia macellaria: 5-2-2222. 250. 255 Chirysopatssssieeec ssa sma abe sends 378 attenuatalssss- 225 s2 eee eens 351 Chrysoplatycerus = 222 2 4 8476405 howardii.new species 405 Splendensi aes 405, Chrysopophacu si aaeer ee nee 528, 331, 350 Joys Wall Gch ees emus 2 sree ees 350 compressicornis _---.- 359,351 Chay sotusipalllipesi sss = eae 202 Chy toni sles eee ees alee aoe en sateen eoanie 416 Semifasclarsier ese en 413 new species- ---..- 415 @CincinnuUTnuse esses eee eee me 497 COCCINecIErONSeess= eee ees 499 INO ARTIS eee r area dees 498, 499 new species. -_-_. 497 TO PLUS ss essa see nen 497, 498, 499 @inelhidaors snes tees ee Sa eee eae 223 Cinclusaguabicustaesss==="—ne==saeeeee as 5L ASTATIC USO eer ee eae ane 223 Gashmeriensismecens sas aneane ae 223 cinclus cashmeriensis -_.__.-_-_- 223: Mex CANUS Eanes eee eee R emcee (OS Cinnyris:chloropySiaes: =. se. 34 Chlonop yells ae eee ee 34 Gyanolesmaiae-o1 ete. anaes 34 GyanoleemuUs sete eee 34 johanna. jess senso se eee ot ODSCUT Ar eae = see ae hc ae aes 17 QWSCUEUSF eee ee es ee aes 17 SOUM=mlaim preire eee eames 246 SONALI Ms SSRs Boe Bec cou ose 246 1052 INDEX. Page. Page. Cincophylliaeeesss setae a een eee 186,197 | Colpocephalum chrysospheeum ----_-.- 74, 95 CTC US Eo ee aaa ee relate peer 55 Githusuimys esses eee 74, 86, Cinereusi 4.3 oes See eeseeeeer cee 7 91, 93, 94, 96, 97, 98 GY ANE sos eee eee 218 flavescens -.-..-.---.-- 73,89, 90 hudsoniusmwasestesees-eosee esos 55, 89 THERMO -Gogec sone ones 74, 98 maillandie 222 seseoeen ea eeeee 239 funebr.e rs ssseaeeee a 72, 81, 82 @isticola.cherinasesse==— see nee eeees 245 fuseipes si. eee eee 92, 82 Cladocheeta nebulosa, new species ----- 263 grandiculum ---.----- 74,95,96 IMO\7 HOMO os ooce ob cose ecoce 263 lanier oer 72, 81 Madoconamtre cee Soeees asa ee eee eae eee 188, 192 laticepseeeeaesteeeeeee 72, 86 COE Ov ASS tee ts ee a te 192 longicaudum ---.------ 73,89 JOhNSOniees as as ae ese ee LOA OTe OS maculatus =a ees 74, 90 lineataree. 225) Us sseeee eae. 188, 197 ochirace nin ==s====—==—ee 73, 87 Clathrospiraiconica oases s-0-4-9-22—=-— Lole6o, osbornigeeeess = -aaseeees 73, 89 Glemam ys eee eae eee aces 23 ely] anu 80 Glibananiv se esses esses eee ee 302, 804 peLp anus === eee 71 eequainilise=<: =e lasassee anes 304 OMA) oeNcodsss cessed = Jey ee ALrICANUS! =e neeet ese peeeNOUs O00 DUStolusumys sss 74 Chibananivisiaeeee epee ree 304, 806 pustilosumyssss=-ee = 91 Cookie arse ee eens 271 Spineump === =s essa 72, 84 new species __.------- 304,305 Spinulosumies = ==2--aes 73 Culbensisimt ass. sees eee 305 var.minor. 73,87 anelitailse nesses ace ea- sees 304, 805 subeequale .....-.-.--.. 74,93 sclopetanius=seesseseeeeree 305 subpachygaster_---.-.. 74,91 Senegalensismesr= se seeeere 304 Gran Ga 73, 88 Vit CSCENS saa e nee neers 804, 805 WUNCILeTUIMY ee = eI CNOd Willgaristics ese ese enya 306 Uni Orme rh sasaee eee 72, 87 Glinoceras) se es Sa ie seen eee CA’ -Clovhwarnl og CE Ehs ses ocosbestasosceses code il @xa SU eee 151,171 | Gomestical=26es == aaa aes 73 @lisiocampaidisstriasees=sese eee eeeee oe 382 | lidar esses 22 es Sees 63, 66, 67, 77, 89 Glunaculumyseeecenee ae eee eee U1, 112) palumbus=2saees ete seo eee 67 @occidsparasitere ees aap eee eee B24 | FONG MUSH, acaconacess wsboebecec 238 WOCCIMaet soe eee See eee eaeeee = 323 | rupestris pallida -------------- 209, 210 @occidencyz;tusjensifer == 2-2 --.------ 383 | Suratensis}2 esse sepa eee 210 new genus ------.-- BEL haxenastss. |) Colltehan ere — pce GScq scones GSadconacescolc 209, 238 Coccinella 9-notata 222822) 2 25.22 oe ea 378 | Columnaria Sexradiata.---..---.-.------ 194, 197 GWOCCODLUS ee te eee ee eee eee eee BAZ TOL RA0S | ho layer Coys Na a ee er 235 diaspidis, new species ------- 408) | Colymbusiancticuse-eesee-- see eee eee 43 Coccophagus annulipes -.--------------- 384 | CAPECNSIS Hess ys see sae ee ee 235 Coccophoctonus dactylopii ------------- 37 glacialis cee eee eeeee 43 new species 375 nigricollis californicus-__.--- 43, new genus..-.. ---- 337, 344,375 | 44, 46, 52, 69, 75, 80 Coccothraustes icterioides.-_..-.-------- 227 | pel Zeolites HAVese ee eee eee 235 vespertinus montanus. 77,94 | septentrionalis --.-..--.-.--- 43, 60 CoccyZUSaMeTiCanussaecss essa eee AGO a eC oly pbeanay s-eeee pees eee ee eee 92 californicus occidentalis -__-. 49 | Costas 851s Eee 69, 92 erythrophthalmus ---.--.---- 56,91 Commander Islands, contributions to Occidentalis =a ssa e a aaeee 91>) thematural-historywotr the: == 2555 -esse 125 Coslentena ta see e ss ese oan A58e | Comp sescecn se eae a alee 332, 359,406. Ofosale never yae ss ee eave am ne eee Sees Nene se 189 | albicoxa: sas yee noes seen 399 oe ase Siete ee aa 189, 196,197 | albitarsis 22) eco seen 359 COMIC Sac enscsted sae Iacese 189, 190. | bicolon= {eee nese ne ee ee eee 360 marylandica _.-..-.-- 190, 196, 197, 198 Cyanea ss. 522-25) ee eee 404 Gen Oita ee ee ee ny ae ete es aera 301 TUSCAZ Rs he oe tee erceee eee 360 TUIDESCENS Soe er eae eee 30] ObScruTrat ten ee aera 361 TUS OSUS sess eras eee eee 301 peckHamis. 3223s see ee seteereee 361 @oenObitidee ease sera ae eee eee eee eetou scutellataseses-seeees eee 24, 332, 359, 360 Ceenocencuspse ea eee ene eee 381 SWied Orin seta ene eee 361 puUncticollishassss = eames carei lie ie Oxohatrete io bald Ms Se dans Sons 182 Coenosia varicornis, new species ---..-- 256-4) Contopusirichardsonilja=.— sees seea= 93 Colaptesiaunatus eee eee eee 49, 56, 92 VAT STS pes eee ea ice ee parce 50, 93 CAPLET eS See ee a at 229 | Conularia trentonensise--so-se-esseeeees 149 Colaris;leptosomus=a2452 sees se eee 242 | Copibryophila angelica .----...-...----.-- 413 Colinus virginianus ---.-.-------- 40, 55, 62, 76, 88 new species----- 416 Colpocephalumieererss eee as eee eee ees 42,71 News SenuUS a see 416 ANOOWEN ned coe oaae Loe 282) Copidosomas.- os.) oes eee eee OOD ore OOO Roee assimile 2222 Sees 72, 86 aNCeUS zsAeae See 364 INDEX. 10538 Page. Page. Copidosoma boucheanum......--------- 366 | Ctenodonta medialis -............--..--- 161 Celalenzesees-cs ea neon esa 366 NASWtae sess ase ensues 160 chalconotusee-eso ee ceee oe 363 MLC Aa ssw see yh oe yee ee 161 diversicornis.....-..------- 364 ONATLORMMNIS 56565 coasco necane 161 PMRCCTIN® = sscdssbsecsccseceos 364 Sofie dicey ena eenteee Ean filICONMISIeee a eee eee 364 Subnasuta sss anaes 151, 160, 176 flagellare.---.--------. auece SOtAIMC UCI eases sesnee anes ee ee nese eeeee 27, 240 Hagellaricies= esse esse: oot CucwlusicernwleUSteesaese asa e eee eee 240 melechi coe eee aes 366 CANORUS Hei ee eae eee ee 49,56 intenmedsumyeses seees es == 366 pollocephaluspsssss=—e sees 241 pallipes)/pesc2 sess soso 380 TOCHTiMese= sees 241 Dy maliclis eee aseee se oec= 366 TOCHIGI ee eens eee oan ees 241 trun catel lume ass eeeeee 366 Senecalensiseesssseeeem cee eee ee 27 (EOE ON sees oe Series aoe SUle Ee Culexqpertunpan Sees aaa ee eee eee 250 VOU oes See se ewe see BOG Cli cid sare mee ae eta eee eee 250 VaGierauum snes oes oor Cultelluss#belchenieeesess=sssseene eee ene 108 Coquillett,D. W., on Dipterous Insects COStALUS ere erates eee ee ones 108, 109 EPOMeE UCL LOPel CO anes ranean aee 249 STAVANUGH So wete ewes eee eee 108 Wordclastahna ese eee eee eee 27 TING GIS) eee = once eae ee eee 108, 109 UOOUP DS aro cobadoaabssoanes ss 241 Sulbsulleatushae essa sete mss sees 108 WORD CHI d eet een ae ae eee eese 27,241 | Currie, Rolla P., A New Bird of Para- (Woracopsisinignapsss=s 225-522 see a= 240 GISie see eee eee Se 497 Corethrura insularis..-.---.-------.---- 236 | birds collected in Li- Cory dec mere te eens eae ee none 228 | beria by. ------ Saree 25 Corvus americanus-----_---- DOO IMOL NAA Onooel ie OlUnSOi1 CG conse ee eee ne eee ee 25 GOMER? saad noged dooeen coLcoo see 74,228 | Cyanocitta stelleri frontalis-.-........ 51,57, 93 SiInatUSesep eases E OO Aon eolellin Oy. clomeboparereces assem eeaes eee eee 272, 282 QORMUES — soso Soansne sascsN Sose BaN6 78 | Cycloneda sanguinea-.....-._--.-------- 378 CORON Ci ae ee eee Nee te Ota EUS: Ms Ohya eee aos Sle ee Se 62 (HAUG MbIS Ke oa anes oStaboo ses eos 74, 22 ie wal @ kia = ete Sete eerevas 45 Corythaix macrorhynchus ----.. Laeeah 27 CaANACeNSIS sees ne eae 65 Corythornis cristata _.-..--.---.'.--.---- 242 TPUSICUS MSS sae a ee nee sees 45, 65 Cristatustees see epee eee 242 ClO Sse tee a oe ee 65 Cossyphajshanpele ss seseee sae PAUL Chana s Gea xO osu ocaceasebo soos eacaoSKeaS 366 GOWNS cs255 se6b Shodes doce doasmoescaDecass 220 | @ynipsillum) infidume 22-2. 22-2222 5524--- 360 Cotywlewipanriaiasss-asose-e nen ase oacen= 51) Cy phaspis frobisheri=-5- 222 =2-2-------- 150 Couayesenulenennnssnes nena sees ae eeae CAO Ong Cre odes Se caos cosaoeorseconaseuacd 2 TREN VIOENPON Boo oe oeae cea uaedoS ZAD In @ypselusapUSee sees -ccnseeee eee sees 51,71 Couroucoulnaninaens-.---ss-sss22 2-225 Lady rbOCENAS as-cesesmeee een a esas canes 171 (ChanmexoniGles) oS ocese5 peace nodes Tbo6 Bae 274, 311 bafiinensiske== sss 177 Cramton ee el Ee See ioe 400 new species----- 151,171 @nabenopideermens sss soon ee eesseeeeee = 220 Cornultmieeseeese eee 172, 177 Crayfish, new species of_--.-..---------- 121 new species---.-- 170,171 (WrepipORas ee see ee ee eee oS 151, 156 ORS UUM ee ea ee a ileal Crexe pull Chia cas eee nese es tees 26 manitobense ..------ 150, 151, 170,171 Oriniger eee esis sees Seon ee 14 30H Cyr tocenatid cess sees as saee eee eee 170 SUL GUN AlIS yee seee eam ae 3208 | Oyrtodontaratimi sees eee ene nae 162 ASUNET CTE SSG ene eee ee ee 320 billing sit= sis wane ee ee 162 sordidus, new species ---.-.-__- 320 olbberaeeee see eeee 151, 162, 163, 177 Croniuspmillle rile eae eee 291 TONED EU ee a gS a een 162 TU DER Ge Gos Seeees Se os eee 291 hUrOnensis=-— see aaa ee 162 (Crossley aa ase ae a ee Seat ear iee 244 ATV aeee eee ae ere ee 162 SHOU AGO) BATS oe oA oo ee 244 sillimanensis: ces. se eee iUpres Crotophaga sulcirostris _.-....--....---- 64,91 new species- 151, 162 @rnustaceasa sees me bewse eee ea 173 Subcarinatape-se-eea eee 162 Crustaceans of West Africa __...-.----- Qlalie @yntod ontidser ses ee eae eee ee 162 Crymtocrinidce sss 22-2 a pte soe TES |) ChyASWONG Oe) Sado ooo Sesedseeaaesbescnae cos 155 Crytodonta affinis var. fillmorensis __-- 1620 MDactylopiusp sss ss=see eee 357, 376, 384, 387, 405 Ctenodonta albertina _.....-.....-...-.- 161 adonicdumrssess eee e eae 359 balfhinvensSiSiessess seen 176 Clit pies mee ee a eee 249, 252, 269 new species -... 151,161 destructor =tee4aa- = 303, 400, 406 Canina tae eee 161 ephiedince eres se ae ae eee 410 carpenderieee aes 176 WERENT saaead beads Soon bose 385 new species.-.. 151,160 VWirgatuseess nen sass anene 373,388 cuneiformis esses 1GOBISDafilaiacutasseesess ease eee aa 45,70, 71, 85 frobisherensis---... .-----_- 176 | Dall, William H., on the Solenide of bew species. 151,161 North America and the Antilles ----- 107 1054 INDEX. Page Page. Dalmanellay 3-2 eae be Se eee ae eee 156: Didg@ene see ssrjso2 os. eee een ee eee 302, 306 testudinaria-sseeessseee 150, 151, 156 DReVROStES eee 306, 3807 Dalmanites eboraceus. .----.---.-.------ 174 denticn lapis === see eee 306, 307 EO CCKEICKS oo poco cece oka ese= 176 [OHOVSAUIEHRORS sosacccoconcs Ee a et 206 new species. ---- 151,174 var. gracilimana -_- 306 Danay Intrawest ona ae eee meee 182, 183 var. intermedia ---- 307 Dasycephala syndactyla -.-.-.---- .----- 31 RVDEs ONANID costes cose 306 Dens ainiyallless Ewe) peepee eee eet 182 VaTIANS 5-25 eee ee eee 206 Decapod crustaceans of West Africa -- a0 var. gracilimana ----- 306 Devwamanrckar qs wee Ate see eae aaa eee 182 Waies OWN coco ce aceee 306 Deli cla @ mies eee ee aie et ee ee eae 22 Diomedea albatrus_.._.--.. 54,59, 64, 65, 72, 75, 82 Cashimeriensis=sseeepee ee 227 floret nya Uns ee 59, 65, 83 mMepalensisyysseeessee eee eee 22 chillororhynchaes esses eeeee 60 Meltocyabhiuis's: otc. j shes eee ea eee 202 exulansse2 ieee oes 59, 60, 64, 65, 83 SIS) 1 Co Le ee sea a a ae eee 483 melanop hisses == 59 Dendragapus obscurus fuliginosus_-.-. 63,88 NISTIPCS s28s 5555 se eee ees 59, 65, 82 richardson ---- 889) Diphyphyllumeeees sees Dis Nt 175 Dendrocygna arborea .-.---.----------- 45,71 | Diplograptus dentatus.____--------.---- 149 Dendroicarsestivaeas= ssa see BIE bY Gsh (eh wls) ||) IDrholkosns) Co@owlarrbionl <5 oon eos ee 249 VAC OL las ete Seats ae es 74,98 | Dipsastreea hirtolamellata.__.....----- 190, 197 IDendromuse ase tes see eee nee ees 14 | Dipterous insects from Porto Rico_-___- 249 CAT Oli tence eetetee at Wr Cl meet 29,30 | Discocerina leucoprocta -..... --...----- 261 arizelus, new subspe- PARA! soos soe See eee 261 Gles ieee aioe oe a ee 29) (Discodies: £2 uses iees 3 ee 376 eLMSGUS ase e eee 1G 9D oCophorus yess eee ee 41, 43, 45 joy oaut BNE ae 14 acutipectus === ==--eeeeees 43, 80 Dendromys ese hoses ate ae eee 14 AGUSbUS S22 sses es ee 45 Dendropicus xantholophus-----_-_------ 13 agelali:. 2-230 eee 50, 94 Den drornis ieee sae ae ot a pee eae 317 aliens) ..225:527-2e7 Sees 49, 92 anew bird of the genus ---- 317 abi COLOR ee eee ee 43,80, 81 Alavi gasteryiss: =e yaaa: 317 bassa nce! 2s) 2 oss Seas eee Oe striatigularis, new species- 317 ibisignatulsSessesseessa aes 46, 86 Depressaria nervosa. -------------------- 364 brevimaculatus.--.------.. 45 Desmometopa halteralis, new species -- 267 brunneiceps __-.---.------- 45 Desmophydlum sss ees eee eee 184 | ibulbonis|=aeeses eee 48, 91 AN PENS Hee ery seme 184 buteonisics) 2 eee 47,90, 92 SWalllll C Oxeleeey eeeeee 184, 197, 198 californiensis —. 032-2222 = 49,91 Dexid'so322- eee ee Seen re eS fa ae ae a 254 GCalvust ecco 2345 eee 43, 81 Diagnosis of Dinolestes lewini.---...---- 116 Canuti: $22.22 sseese eee 46 Diallagma, new genus-----------2.=----- 453 ceblebrachyStees-- sees eeee 48,91 Tarte ae seve Sie ele aa ce 414 COCCI SIE Sah ee uN aes eine 49, 91 i new species --__--.-.-- 483 Colyambinu's\e=se 2 === see 43, 80 Diaphorophyia castanea .---.------.---- 16 COnAM UNIS seers ses e eee 50, 92, Diaspis ostrezeformis._._.......------_-- 409 93, 94, 95, 96, 97, 98, 99 MOSES crs See eee Se gs lee ee 355, 408, 409 COMM DATE ease eee ee 50, 94 Dicelloceras rufescens _...-.-...-------- 354 Cordiceps sees eas eee 46, 87,88 Dicelloce rus eee oe Oe aoe Se ae eu ee 335, 368 COPVI ¢ 22. 2s2ccee eee 50, 93 VID TATIG Ae cee ne ae ee eters 369 CUPSOL_ see eee eee eee 397 ANOMtLOMUS eee eee 392 thyreodontis ----.._------- 397 MOTI ORes tee see RCILe rAd RE 333, 362 | Epimachus magnificus ----.------------- 78 MTG OIS seas ages ee 3967s hipixanthusesspesss=es- ss ee 286, 289 notodomntbze sees eens eco see 382 Helleri. 25-232 -e eee 289 NUD pennismessese ese eee 403 | Erethizon dorsatum -------------------- 68, 99 ObSC Ua ee aa sera ee Sola METI CyiGnuUSmessese eee eee 328, 331, 349, 351, 355 ODSCULTS 220 Se sae Se aaa 361 eemnestusas 2 see eae 352 OVAWLOR UT yee ee 382 eeneiventris ._..-..-.....--... 301 pachy,psyillcoe a eee eee 382, 383 CRRYSCUS a see eee 302 DUS ec See se Te ae eek UE eB AIS Sorel net 407 lathiusculusteceesseenese eee 352 INDEX. 1057 Page. | Page. Hricydnus longicornis_.-.-.-.---.-.------ 302 | Eurystomites plicatus' --.2-..2---..2---. 151,173 maculipennisi==se=as peas =a— 349,350 | Eurystomus afra ........-. ..-.-.-..----- 27 Mecalarusee acres see 302 SAU CULIG saa eee en eee 241 paladanuSt ss ae ea esene ee 352 SULATISE eters Meneses 27 APE UTULTeTs Cl es een ay ea ee ey eee 302 | EU yib © I ee ee Seemann eg Ae as 347 SHRIMOSUS asm eee eee te SB || JD WSC. ce sss seescnessetescerac 325, 331, 353 VieTULN alist e tes ses an cme ees SOCEM SOI OMe nee ae ee ee 341, 347, 404 REM OLOPUS sees see eee See on oe 282, 285 | lonsipennisiss= see eae saene 404 SPINOSUS eee eee = Zo M MERUCe US TS Gian oe ase ee een Ce 326, 378 BEriococeus rhodomyrti -----.----_------ LOZMExestarapiGalicn= ae hue san se 258 Erismatura rubida._..__-...---.- 45, 46, 62,70, 86 | Spolia tame sass ne eee tN 258 ETS blistellolerOnS eases — ese es -isomae se 253 Sbigmatias=s-e= eee ese eeets aes 258 WHIACUOMUNID, Sse ndo cescooeassoeses 252 CHO pS eae ee ere ee eee oi 257 TBR: 55s ea ee ne el Sys le Hal COR: Lett See eae ye aeons ye eee 55 Ikan alah; see Oe eee Re 113, 116 allipi cil aaa eas tse eee ele eae 212 TER EL AVIS cee ch es ae a et er 299 GYAN CUS y= eee ree ee Ue ee 218 TMAS CAL OM Cie ee at seen ee een 299 HANTS ACH aco asa sansa Saodccos 210 ECO lin aeeeaee ee eee Sees anos oe eee eS 101, 102 Tab NGYONO SOee ae Ae ee tee ioe near eae 239 INO WEMNS po Soaseasensosesees 101, 102 TAS WISH See ease aerials 217 MESO Tie ee ee re eae ee eee 101, 102 (OIG APNG) So eee Se see eusueeeaaece 73, 211 Sbylobatapeaereeceees as ee aes 101 PYPERHUNON Saas aban ooeseos 55, 90 NE COMM Y SMe te eee rane sees 332, 009 sparverius deserticola._-.-----... 90 DLC OR Ags eee oe eee oe cee 309 peninsularis --__.-.... 55, 90 albbitarsish eesti teens enone 359 Gimme Gulu Sse ee eeee eee 69 le GaiaOrtbin =5-— sesso soesecs 360 ZOTMVC ViTs Sean ae ae en es 238 ODSCUTAMM Eee seer te wees SIGs Hal Cont dae i ae eee 26, 210, 238 OSC UIA Sen ere ae eee = SOUE | SHaviOSltCS see eae eee weeny ta 175 SCube lla tae neater S608 PHiorini a Saprosinas sas ses ene eee 403 ; SWC Cite cee tae eke etapa 361 | Fishes of the Suborder Percesoces --_-.. 1 Buh ybussubjectuss2-2 ----2-5-2--------- 251 | Foudia madagascariensis .--..---..-.--- 246 TEDL ON ai URS) eS SS ee Se Oe espe 3825 | Francolinus ahantensis ----....--.=----- 26 TTC Sala UG eee ee eee emete es GOS A SCTIATE case ese. oe Sele ee en ee eee 19 HMimemaropbinSiss sss. a eeee ene 151, 167 ochreata.--.-- ei Re Ad 19, 37 SUM Shee ea Sere es Se eee 167 prosphora, new species ----_---- 37 THING MAI ORNGES sas aaeo sa Sace one seseceosne AG Gl evn era bee ek cy Ul cays ee ee 61, 72, 76, 84 [BITC RNSRWEAUIS) | C SabsosaSeSeseoeA Beaman ROrE 303 MINOR sees == SeeoeEsoanessscone 61 ERNIE AUIS aoe coos bose eosoS 303 | Fresh-water Mussels, Synopsis of the THaYSN aos = Nea es er 304 Naiades, or Pearly, by Charles Torrey DUSuUlat Us eee ses eae seas 303 Simpsons am ose easier een eames 501 Sculptimanisiess=ne see Ole Ein cillajaltaica=saesene. =a 225 trianomlarishesssecerestesaee 304 carduelighsn Bese ee fs) Eupaleemon paucidens --.-..-----.------ 315 IMell pod ages! cee eee 17 EAN OPCUS peewee nae Nee eee es 286, 287 IYO Melfi ull eye ee ee 225 ahr] CANULS eee are 28a ehrineilllaudasordid dessert eae 225 BL UpelMmin soy setae ee ee eae Ges) Spe ria. i avemavestl hoe) on ance ease cemoscesscocce 224 Hupelmus rufescens. -2..---2-. ----.22:.- 353, 304 | Frobisher Bay, geology of ---...--.----- 144 ‘ TULUS eo eee eae te ee Gil: || IniaoranertHalls 1B ID 3 55 sso sso ses Boece ose 183 Euphorocera claripennis----.-.---.------ 253 | Fulica americana-------- 43, 46, 62, 65, 66, 69, 75, 87 Eupithecia absynthiata ------..--------- 367 UL Teeter pases apd eres Ses ace Mins eae 46, 65, 69 lariciatajes-. ss262=2s ce enes 56 Aopen | all aie a eee ee eye eee 52 Oblone ata esos nee eee 364 DSH Tb 0G cepa es epee ae eee Pe 45 pimpinellataes=--e-seeessees 364 TaaveW gil Rhee ae ery 5 45 SuUccentuUnIataee see) eee 364 | Fulmarus glacialis glupischa ----..----- 44, BT PLOCAMUUSICUVACI = ses aaan ae ase eee ane Ut 52, 59, 65, 71, 75, 83 IDRIS “oe aseeces SSeS ee eeeese ees aereaas 30 TOU LETS essa eee 83 labiOStriseas seer ee ae eee 15 rodgersii -... 44,59, 65,71, 73 Ne WeSeCNUS 2225-55522 soee sees by MEUSISpinaniMt atageeses sess eaeee = aeons 151 WAGEN Str See see oS ee ee ees 15,31 TNO DUIS sae a ere hepa her che oe Ao 151, 168 UTE yMeELOPUSH=ss0 eee enn e ese eee AQ Gdns EMU SUS secon cases es oe wen cmon aoe nek 140 DTEVASEe ee eces eae See ee 64, 82, 83 WaT TON Giles eee eee ere oes 140 bAUTUSE Sosa coe cece esas (Bb | (CaCl 523 soa ooo SeaaeseeOossesoosansaesas 2 IBIAPY Tel OO ORY TUS = Soe sanaeesabeaa coos 336, 343, 874 | Galachrysia marchei --...---..-.-------- 25 Schwanrzise: 22-2 -enceres 374.) Galactochrysea marehit 2-222. 222 222. 20 UT SCADUS ee sere see eee eee eee 335,368 | Galeascoptes carolinensis--.------.------ 58, 98 PlabyCerUspesacs saa eae 369 | Gallinago solitaria -..--.--..- ee se 207 Saltator ees one ee ee eee Son Gallinularchloropussssss-eces-eeee teens 65, 236 Proce. N. M. vol. xxii 67 1058 INDEX. Page. ; Page. Gallinula chloropus pyrrhorrhoa -.-...- 236. NG ONLOPSISts. 0. Sena eae ee ne eee ee ee 277, 278 hema tOpusy aes eseeee eee 65 Crulenata sees see eee ee * 278 OLIentalige ners - sane aeee ase 65 CRUGMIIWIE) so nscoseconbecase 278 TONAM A NGPA NOEY sy oocoeaonae soln 2800 (AG OnLOSOMA Mil ere ie = eee en 291 Gallusidomesticustern see ees eeeee tee Soe aGaramamnyS1i Geo eee ee ee 163 gallus: Stee ese s ele ee eee 73,89 | Grapside _--.--- Se laste Se ee eee eee 272, 2h Gammarus soe ee eee eens ee 128 \\ (Grapsuseee fase aie ee aa eee 277, 278 Gane, Henry Stewart, on some Neocene CRuUlentatUS etapa anaes eee 278 corals of United States ......-..----.-- 179, 183 STAPSUSh lA kaos eee eee 21,278 nGanzettaycalzett aan eee eae 237 elites es Nace re ee at es 278 Gastropoda seer aeeie eee 164 Simplexyu sss Sas aus eae cele 279 Gaurax lancifer, new species. ---------- ZOOM LG La Calusicinereusss 2 se === == === aeaeae 247 Gebiashutcattare 222-2 22 eee nee eae S09 Gaustammernicandyes===seeee eae eee 72, 86 Gecanrcinidse 222 eee saeco see eens nud |) (ENE MEH EMO oe ecccmsceot dase Ssaes5 eecsae 46, 86 GeCarcinws) see ae eee oe eee a eee PAG, Ue |) (Envahr ony COMrIER) oo eas cote Socbes Sheses 57 LEECH HOMIE) socoss osanccacsoses 277 | Curhynchas=e= =e saan 51, 96 TUPI Classe as eee ee eae PAC || (Gnvaaaha@) on Keoo) GAIN ALIS s == 6 seas See eee ek 13 Gecinusisquamatuspesss see ees ere eee 212,218 pelle caste lke eee ee 13 Gelasimus cimatodus <2. --- .21.-2-- 2222. Z1On NG. peebos batbabus) 22s esa =e eee 73 IMO TCA A ee See ete ZiGs | CG yRopus|: aes a eee eee 42,79 perlatuses2- hiss yee Se seee 276 STACIISI See eae eer 79, 100 tanger) Sissy Uae aes 276 OV alls). Jes co 22 See ae eee 79, 100 Gelechia Sr eee ee eee 3625 GypsihimalalyenSis-=- ese ese eee 210 gallee-solidaginis-._-_.--.--.--- SOOM ella ol euel 1G Ojval Cl Aree eee 58, 96 galloe-asterella_-..__.-_.------- 366 melanocephalajasssss5== === ese== 51, 96 pseudacaciellays-sseeseeeeseer SOM pela ROlepIS esse eee eee eee 341, 347, 359, 403 Geocichlayhorsfiel dieses seas ee eee 319 cyanea: 2222.2 a aan 404 IMEST ONES hae A eee ee 319 dalmani2222 2eee eee 403, 404 Geometraicalianiagesss: snes een- aeeeeee 364 Nulbilipennist==s22—-==s=s === 403 STU TC evs eae eee een 364 ZOLLCEESte Calas sane 404 STM UMA aes pe eee ae a 364) Habrolepoid cass=sssse> eee anaes 829, 332, 341, 357 Geomyda key aes See eee seeea eee cee 23 Sawa; sj2.62e eee 357 Geomys bursariusesss ss heesseeseeeaas 68,99 | Habrolepopteryx, new genus.---.------ 330, 309 Geomiyzidee sso ee ees eee ee eae 264 pulchripennis ----.-- 359 Geothelphusatasse sees eae eee 2825284 |" Haden sos 352bssoas scone cece aise eee ee 471 IMACTODUS Esa ea eet ee aa 284 clHaractal 2223) 222 eee 469 Geranomyia rufescens ---..-.---.------- 250 diviersicolorses == ese eee 470 Giebelia: sar se eT eos ie Ea ee 41, 64, 79 EPONS a 85. Sys S ae ere 468 iON MOIS) Schoo seeooconece 64, 82, 83, 84 jOCASta, 2. 2.2 L2s eeu seaeeaee eee 414 Glareola;marcheieess—2-= sees eee eee 25 new species --_---------- 470 Glaucotho._.--.------ (AE Lea ee ele eee) 302, 3807 Jewucoscelis! 2... uses oe eee 471 carina tare. ee eee 307 luteocinerea elas eee Al4 Glyphastreca tonbesim snes see neeeseeeee 194, 197 new species ------ 468 sexnadiata esos 25s 194, 197 IMactatas elo 2. ssaseee eee even Glyptoxatnit busy yee eee one 285, 288 modiea) sos hs sees eee 469 vermiculatus --_..-....-- 288 mustelina 22'.2- 22 ese eee 414 (ENOL Wi es es is meses sea aaa eer ec Se ee dete oe 99 new species -.---.--- 469 (GONDII eo ie ale AG el eat es Uap Se 113 polyodom. 222222522 eee 367 Gioldifuss:7Ava cus eee cs ee ae 182 tapetal_-s2) 2 ee eee 414 Gomphoceras he eens eee eee eeee 172 new species ------------- 467 Gpdhomhoany Sosy ssaocoseesae 173 tela 222.22. 55-2250 52 eee 414 Goniocotes eee eae ean ete eo ces 42, 66 new species..-.----------- 470 burme titi ee eee ae ae 63: Hadenella 2s )-25- 2-62 6 sai See 416 COMPAne ie Soa ey eeeewente ee 665/89)5) Hadirianus eases tees aes eee ee see 21, 22,23 creber ai Sees seal sel sae 66, 89 octonaniusss=-— eee Soe aes 22 GOntOG ese eee UE ea Sie eg nes 42, 66 schuchertia====sehe eee reas 22, 23 COLVINICOLRNIS ses eeee ee eee 67,89 | Heematopus ostralegus ----..-.---------- 60, 73 Cupido eee eae Ve ees RE) | akabone> diese oo aeok ee coco cocoeeescos 183 Glam CORMIS sees ee 67,89 | Hakodate Bay, Japan, new species of GIS aT eS ep ya eae ake Ne ne 66, 88 Idotea! from ss 3). 32 Sie ee 131 fAalciconni Shee eee ee ee 67,89) |) Halcyon mailimibicassfeesse esses eee 12 mMammillatu stays see 66, 88, 89 malin Ci Spee eee 12 mephitidis--_....-- fee ees 67 fORDCSIe eae eeeees 12 MELLIAM ANUS Se eess eee eee 67,88 torquatus .--.---. 12 OLLY. 21S 355 Sse ss sees cee ee 66, 88 senegalensis-_.-.---.------------ 12 S bry li fie x jose aes ss es oe ae 676890) Halizcetusialibicellaeies 2 sees eee 56 Goniegrapsus simplex ___.._..._...--.-- 278 allbicillay erst cesta settee 212 INDEX. 1059 Page. Page. ance tus albicillismeesess sense e eee La ep ELO TTC OD iy; US eee een 329 LOUIGOVAOINS saeco scaseseess 211 MCWASeNUS see ae 355 aizatusyralllor cil ayes pea ens 73 Suibaipterticie sees sees 355 leucocephalus_-_-___..-- 48, 56, 63, 73, 90 new species .- 356 leucoraster meanest eee enene 7 ley OR ALS se acser eae Scaebrn coos SasOoBaenae 297 IGWICOIRVDAR, -oo-eSeseSeseeonsss 211 AS CIAtU Sie tees Seen eet 297 OLAS TC US ee eee eee ee Te DEINCE Shes aae eee eee 297 Ted also Uren GUS eee eee eee eee este A@mElerbstiaeryOphora sae see ee eee ee 294 LA Gly StUStee sees eon See] e ke Saeed 125, 126, 127 WIOlACC alee ee eee 294 Ute CUl aye eee seen ae ea 1290 ElermetianllticensSpees-seee a= sees ene ee 250 OCHORACI ALI SH eee ee 129 | Herpestes auropunctatus _....._....-...- 213 Sail pixie ees Ws ee AZOMEVS GET AMAS Say ete epee ee eee tay tes one y ena 105 SUC HIAG RCIA oe weet ecome 125. 129m pEleterarthrellusese see eee 339, 345, 388 new species. .--- 126 australiensis ._......-.- 388, 389 TS UML LENG 55 Sete eee a eer nas a NAL })\ JEG WERRO GAT ths nos oo cmon wseeod Sosseueseose 295, 296 Gracherod ties =e sae aaa 141 mMalGZanniee sae eee 296 from California, a new variety Heteromelesiarbutifolia. 22-2 2222-. 5.22 386 OL a AOS Seer bee ren oa Neh) || IBS NEKO) coaco se daosnslosonus sSencs CON eL EL eu tll OTS ene eee RN Sau s! 141 Shama So ooosoesoned eee ala 37 var. walallensis__-.-..- 140) | PELMantopUSHun pes es. sereee eee eee "3 Plamataree sas eete eos teen 4s Eling arcorbra hens se meee eee aes 481 TUPESCONS eases a8 Fe weee ae ee 141 quadristigma--..-- hoe guuere ea 414 UDeN Cull ahevee es sees eee 141 | new species...... 480 EDDY SILC Sweet e aey Soc el A Sate 7m EL Gl es GNI eee te Serie eee en eter 183 catenularia var. gracilis______ IG 3330) RE EN oy 0s ees Oa Some nema Oe Lak 300, 301 Catena tamer er ene eee eee 149 Adare byl ae Ee ea ee) Saran 301 Catena tuspe tesa eens 146 CUNIDENS Ssh ua ene AT san eee atte 300 var. gracilis _ 146,151,153 GOrsipeseass=saeeree ars eR 301 BLE SUG1C ce eee ae et eos meneame a EO 53 Scalar: sea bes eae ae iene 301 Harporhynchus ruhuse. 22s es see sees 55, 98 scutellata ee yaa cure ene 300 ElarydayGestructonecsssess=s2 seen ee eee 73 Symmistaysnse See eee ee see 301 Harulaubins\auratus = ses. s ese esse le 247, 248 WEIMONGEE eee 2 TUNE EMMEGVO, = oeocce cose Peas sebene 172 amibrosaceet=c =: Pee ae v4 MeanltObenSemeares =e eas 170 VAN Ca ba aoe eGo a eee 266 TavuOM ES KOPMANNES oO oe Soe 71 | Osteolegy of Dinolestes lewini -__---__- 117 HUNTTVONBRIN cos Gonsas IPretoyayoyorole> 355 oes ceso coos n5 ado cees 19, 36 new species ---------- led 55a erocellariatcapensiseass- sss: sees ener 60 Smithigs joes eee ee atees 155 | glacialise es) fh sss teen: 71 IROnOSAS TO bISmenaaeree tae ee eee te mere 430 | Proctacanthus rufiventris -.....-------- 251 PPOGbUM IG dome sees oe hake ete oat ete Bi25289R ErOocbo by p10 cess ae ee een = ee ae 326 TEXO TRIOS) Ses hee eee 28082925 Procyonlotone soem ees aenee name 68, 99 CORLUSALUS ee ese ee eee 292 | IProgne/SUlbISeeee eee e eae eee 51, 58, 78, 96 ediwakdSitaasssrees ose seme 289, 290 NeSVeCTUS eee eee 51, 96 hastabusiease ese s-- ese eee 289.290) || Protonotatiacitreaa-ss-4-- ==. eee =s === 70, 97 Talla S eae ee Lees 289,290 | Protowarthia pervoluta _._..-..-_-.---- 164 USTs ae e Seep ee 292 penvolubustes==-seeae = 151 MU OT sees ese Late ee ewee ase 29a Proto wielsulil Geos essa eee 164 Strigilig nj oee se sie fees OOM MProtrema tase: sees aero e eae se eee 156 Valigusmesscoer sa Setar ss ae 2o9neesalidoprocnemitens sess se seoes ees 17 Porzana noveboracensis -.-..-:-------.- 65,86 | Psaltriparus flaviceps-_---.------.-------- 58 Posid onpy ali Gusie ase ae ees eae 289 | MINN USS ee eee eee 74, 79, 98 PObamMOnge Se Se Par Sues ote ieee 252 el ESAMiImM Obiaesen an eee eee ee eee ee 108 airiCanuSes tess eo ane eee ae 2825 28S ml MESA MOSOleN ese ease ee eee eee 108 anchie tee) fose. acc sseeeteeecens 282, 283. | Gumingianusee ses eee 108 GNUU OVEN ase teeta te Be atl ese es 282, 283 Sanctrae-mantheoysseas= ose 108 Ibalaryaees eee os ee nen oe Sate sro pak sl Tessie lenvehACnOlS) saoous noose Soecocoo ei Sieos 398 bayOnTe MUI see ee 284 Gecidomiuyl sous seen eee 396 loEVOMlENNbIS Sos besso5 peHesS oose 282, 284. new genus ---------- 340, 346, 396 TON SWAAZ Sy esa a yn 285 Mita Gus) s2=seee ee eee 396 Cain py ieee eee nee ee 285 TFouundiformis == -seseee- 396 CHa ane Sika eee ste eee 285m Pseudococcusiacenriss == se osse see eee 407 GeGAZ C1 ae eae ee eee 282, 283 Vill C@B0 i sens es eee 373, 390 Glib oyhbb anes meter Beer 5 284 | Pseudocossyphus sharpei---.-.----------- 244. Gib iusw eee eee oa ene eee 282, 284 sharpilese 2 es 244 emanrcine buImMesassscee eee eeeae 25m lelsillopamciculatamesssesse- see cesese eee 260 1070 INDEX. Page Page Psilopa mellipes, new species----------- 2EOM Reali sabe lina eee 65 TMIBIAVINEV Aco dose case cosoeoouses 260 Dlumibeiventiri Sass sees 65 Psilophr ys sss. me ose eee eee 334, 342, 362 tricolorseas ee eee eee 65 EUGTINA Days ces Sage eae Go) || Illness @piilerel os secace boc doe ates once 236 aTMa buses ssa ence eee 362 obsoletusee. seu =. 5 aes eer 65, 75, 86 hyalinipennis 22225225 essses- 381 VAG So NS ee 65, 75, 86 loneicornis = s=s= sas eeee B02) |p@ama Mare S52. aie fe cer eet a eee ee ee eee 299 Pallichipesisse eee wae pees 362 dentatiss=: sos ee eee 299 Pallipes eves exe yes ere 362 TAIN. 3222 see nan eee oer pee 299 pulchripennishe=sseess ees 330, 359 Serrata ys e eo set een ees 299 Psilopusloneicorni Seas eee a aes 252 ili" TRevmim a cee yeaa sk era wp 273,299 POGLSOLICeNSISi ees ee eee 252 | Rathbun, Mary J., on decapod crusta- 1 BISSUH EE KONO 2) as Se er ea MS 240 ceansiof Wrest Atricajas=2-- 2 s=-seeaee 271 TRISTE ROUISS TANEXEO 2 bea sa coc Sasos Ses Beecee real) |) IRCeXGSVOUBKOUUNN KES 149 AD ye ea aes a Nee aes Bhs Seth Se A ee eet 2 eeteegen 410 ERACMOWS sano scecosees 147, 148, 153 IPsyllecp hag ssa se eee eee ere eee 345, 383 TNGOMOML oo ee Soe oae boson 147 ION, SNS - oo secosktsos 339, 382 occidentalis@===s- === 147, 148 OC Lay) Siyalll cs yey ns 383 OWEN Ds 2222s ee ee Uae 147, trioziphacucee sesso ena 383 148, 149, 150, 151, 152, 153 A Beep Ub Molkeeyitipe ern Sa ee a ea Pe Pacis BZOH | MEVE Ge bel CULT Clee sees eee a 152 Psyllobora 20-maculata 2222-22-22. 2222: 378 | Recurvirostra americana--_..-.---- 54, 72, 76, 87 Pterellipsisramaneay ssa eae eae 270 avVOCebtase: este ee eee 54 Pteromalus\chrysScusesss2s2 2 eee eee Gy) |) lecreauloricloess Inhalt 2-32 oe hoe co ecne ook 223 ATMAC WIA TCO meena aeeee eee S98) Re gualus Sart ireup ape ee eee a eee 70, 98 scutellatusiss eee =s eee 360 VOrUs iota cae eee 70 Pterosphenus schucherti-_._._._.--------- 21 | ReMmIpess sons aie Sy Rae eee ne 301 Pterygometopus eboraceus- ------------ 17 adactylaic: ss se ea ee eee 301 SOOUTId oye 176 CubenSise 222522 eee eee 300 new spe- Sscutellatulst= == === s—- =e 300 cies __-_- 151, 174 testudinarius === === aee 301 Ptilomyia enigma, new species __---__-- 26228 SRhipidomellaees sases== == eee aes 156 IN, PRES oe 6 bocHs ose o Ress 2618) RhiZoObiusid Sbilisis=s-2 esse ee eee 389 Ptychoramphus alenticus---.---------- 4302 C0 Eni ZOCOCCU Sis e at = eee eae eee ae 411 TEV OMOWHROPANE) sSebed Se cosa Seconeabeososes PPA || lRilaVOy OOO KEI oo 2 hos coke seoo coco Coane aascac 348, 408 THN OSSMEIS caso Gooncemenals 227 CLtTinUsS! 2.67 eee 408 FWerasiaigiol Gl ciclo aes ae eee eee 209) “RIO PUSS 22. ese ees ee ee eee 407 macrolopha biddulphi _------- 209 COCCOIS eae Se a ees 407 Puerto Rico, dipterous insects from-_--- 249 debilis-.222 eo 3S eee eee 407 Putinusibulleniaeaess sass ae 59, 60, 64, 84 ATU S CAL See eee eee 407 GHOENIO DOS ssocco sossocacs 59, 60, 64, 75, 83 PISO lo A ese ee eee 407 PERM ccooaso5se 44, 59, 60, 64, 65, 71, 75, 83 testaceusc. 282 so 52 eee eee 407 STriScuSeeee eae HANS ONGONGAa leoOnSoueeo aimee nny c On ell alesse eee 149, 158 beMUit OS bTIS eases se ae 59, 60, 64, 84 IMerebescens!ss-=sesee sees 158, 159 IPulivinariae sos eee Ss oe ae ee Ss oe 387, 388 minnesotensis-____-_----- 158 GPO Sonees Soccos castes 361, 3845391) |) Rhynchotrema capaxs+--sssssseeeeeeee 159 ibapolbloovencey apObts | fe oe einen 405 ineequivalvis--_- 150,151, 158, 159 UTI C Ola eee ey eae 250 subtrigo- VilbISpes eters ae 352, 361, 388, 390 nalis---- 159 IPULOLIUS Ler IM IMU Spy see eee ee ay ee 68, 99 minnesotensis ____---.-- 158, 159 eaellerpale) Ga Geet eA See 99) perlamellosum --------. 158, 159 Py. CON OL GcS ee eee ae ee acne 14,30,248 | Rhytidothorax marlatti _._.--..-------- BYWS Pycnonotus! barbabtusyssssseeeseass a=—s=— 3l : new species --- BYWe gabonensis- -_--_- 15 new genus--_..-:---- 337, 344, 377 SADONeN SIS = eee eee 15,16 | Richardson, Harriet, onanew species of PyicnorhaniphU saseee ss eee eae 227 Idotea from Hakodate Bay, Japan___- 131 fLeberold esas asa eee 227 | Richmond, Charles W., on a new bird Pyrelliacochricornisaee ese sese ere 256 of the genus Py TenestesiCOCcineMS =a] espe seenee = 17 Dendrornis - 317 ID WARANUIPLIS sSatoscadeeneesde eke savas MAE ee 14 on three new Py telialbi coloreeees eens eee 35 birds from Quercusjacritoliaa=sass eee e ee ene 386, 412 lower Siam - 319 bla CtOriay esse sees a sees 388 s|paRile vias <.32b eee oe ee er ere 405 Querquedula querquedula----....------ 209 splendens 2ae4--2s- eee eee eee 405 @Quiscalusiquisculay esses esee eee BOR OA RA aia) sees ee eer rere 227 Rachy centroneeses-seee seer eee eee 2 | Rissa tridactyla pollicaris ------------- 44, 58, 81 Ratimesquimaplatalesen ese ee seas ae eee 1501) MROCCUS/-55252 Sascseee eee eee eee 2 a BWCH Hb o ks ypeyeea ey Scere RD Loe BaP SURI 265236) | PROSCLS WELD seea ae eae sae eee eee eee 182, 183 INDEX. 1071 Page. Page. EROS OTS am Wifes eee eee eet ee me 182,183 | Seelya ulrichi, new species -.-........-- 151, 166 SahORGiaprm OG CS hae amen eee 151, 163 VentricOSa2 2 iesi sea se ee 166 Dalpinebesiobsolebusesssse= sees nee ee Zoom moe laSsphoOru stall Griese ss eee eee 230 seule eilloreollhis) —- sean nod ee 74, 97 TUES Pee Ree Nts epee eaten Ue 92 Santa Barbara Islands, California, birds Selenoides iowensis_.._-.-.-.-.-------.-- 153 TO ROMAN, 6 SAG eo ees Le ee Re eae ea 229 Selicanisicinereo] amass 414,481 Sapromny7aisOrndid ae sess seen ee eee 258 TMEV (ACTS westwoodii _____..-.-- 330, 358 Syrnium aluco biddulphi --__.__.___..... Peet racnemiu Smee seen et ere ee 329, 332, 357, 358 foveal dala eee eee 218 diversicomiss==--s- ae ee= 357 MOVOOUO HWM, SoS sass eocoeeesaooe 48, 90 Aoridantist=s= = sees ee 348 RS VAIS 1d Ge yee aise aS Te Sa any er 252 WestiwOOGil san ==s senna 358 Syrphophagus flaviclavus __....____.--- Sie) |) nkevarereormlleh | ok ood bese eeos seaden Goeses 154 mesograpte -----.---... 398 | Tetralophidea bakeri ------.------------ 348 moderatus; ese ee 398 | new genus__- 327,330,348 new genus __._.____- 330, 346, 397 new species -_--- 348 quadrimaculatee____._.. 398 | Tetralophiellus brevicollis -_---..-.--...-380, 357 submetallicus._..______- 398 | new species 357 VE CLIUS eee rasa eee 398 | new genus --_-----.- 330, 332, 3857 Shovel eset Moe Pee ee S98meMetranotaLrobsoletacs = ee ssese seas eae 151, 164 Machardiavalibizzige =a) 2 ese ee eee BOBmil Metra ole upl dom ers sae at ney eee eee 66 UNE @laubaniG ra ee Se eee ee ee ae ee ee 253 Mad araTensis yaa == sae ae 238 Machy.cinetasbicolor=sss.=- pss sas ee 51,58, 97 TICGhaTrd Sones essa ee 67 1074 INDEX. 2 Page. Page. Tetraogallus tibetanus-=-----2-2) 222222 209 | Trenton fauna of Baffin Land---...-...- 148 Me trastichsne- a3 see esesse eee ete eee 825 EOSSINS! 2 S22 5 Ga Se oreo 149,150 GATTI, wnctsa ceceeeen Seco cSeeccescnces BM, 29Q || WinerroMiGles 5c. ocdoss coaceetcetesscsonea- iW DMibeomaaidel cain alee eee Oe} || Mba ROMAN PIS) CAC = onan eoncsn cose eee soe 149 Mhalassidroma leachi-.---2- 252-222-2222: GO) |] “AMeKClOloniis Chee - sa ome een essen 270 el aed Ca eeeae ese GOR tei Choc ecbes tess =a eee 41, 67 SV alll @ 10 pee 60 Calikonni ct Sass 68 Mhalassinid Camas sss in een eee eee 274, 808 CAStORIS se sae ae eae 68, 96 Thalpochareseeressesteo a ese ees 491 Clim axe ee ye ey eee 67,99 Garr apes ae Aun pene pe noe ae 490 CLRASSUSS eee ee eee OS NOS Mieimmophilusisabin clea ssse a4 == see eee 18 S COM, CS ee eee OD DURA MMACUOMERS sanenestonesoeses sesse 282 Tiina) aS | eee eee 68,99 aAnomalipeseese sss 282 roajolaaGhis ooo 68, 100 Mhawmmeatibisioisanteaess== =a e mans 319 parallels === === eee 68, 99 Nivel nu Sayeyend Cain clo eer eee 283 ORME UIT OMIOSHNS 67,99 AINGMWNES Bos eo seoos seebeese 283 Quadraticepssss = sass 68 Bi blove Al ee eer Seay 283 TObUSUS Hs Sea see OOKOO QUINT DTA cl pene ea eae 283 Scalanis: = seas. ass eee eee 67,99 [eect lketa ates eee VE eo Se Ura 284 SCtOSUS eee eee aa SOS anyone ey elena me eee 284 spheerocephalus -_-___.__- 68, 99 Chayanesieeseeaeeses ya 285 Subrosbratus 922-5 eos oo ASCATeM yes cw iyi SEEN: 283 Giblalis's= ac sss eae 68, 99 GUUL Tae eee eee ee es nes 264) PeAriChOdecti clas ees) sas aaa ee 67 CwaPASMAey Sooo sake oosoekas 283 | Tricholema gabonemse ____._..._---_-.- 13 Maro aribestee sae eee eB) || AMPK AAS HOS 2-2 3 oe 345, 881 SOY es Koala th nA se 28d) | richophorusicterinus. =p === 14 GB YS) DU GPa eh ect tate era iss) || ADKOlNoyoolhie eimai 5852 oo 414 perlatar sealer ee cee 284 new species_______- 47 ETN Te ea sy eueTa ev tsa eee ee ee B60)! | PE RICOpIS: a 222s eae eee see 489 Thomomy, Sion icon ean eee eee 682905 Shri] bites: oe Sao at Leer Se ee 173 MnHOraxskOveoOlatuUs ssa a= eee 320m seb OT h'O CIS) sare a 32), otk Mhnrasaevoswnaryp yaaa ee OO: eringea, eso 22 eevee Sere een Om amo Thryomanes bewickii charienturus.._. 233, 234 Gants aes soe. Bese eae ee : 46 drymoecus------- 234 hny;palleuicos asses nee 1 28a nesophilus_-___-- 234 Islan Giese t= sssee wee aoe 44,47 Thryothorus bewickii spilurus. ---- 51, 52,79, 98 TANEXOUNAPIEY, = oo sea cas coeseean coos 46 inmyiseo to suey Meee eerie cease eee eee 69 maculata cei ases eee coe eee 73,87 MMaARSOGKONa MNOPHO). dooce coon cecasuca seas 397 mn base Lr ee 46 Thyridopteryx ephemerezeformis- --_---- 353 roawbame nally Bee cee oeesSen cee sao: CH, Out tsi Rime liidiae= See. Bee a eee le 243 OGHODINUS Saoace cacoss soceos csceas 207 Minearevonyriel lan ses ae er eee 395 Sulbanquaita == asses eee 46 padella sess ee ee eae are 395 Varlabiliss: 322s es. 5) eee 46,73 Mn eomMyZalssat posse oe eee ee eae 825" \|| Erin Oboe S22 as Se ee ee pete 42,70 MPTUXCT OM ccase oesoSdake tebe seca sesses 325 itr mersel ty visraay ee 71,85 Tine ophoGromUs seem seme a ee eee 328 | IhebRIChb a geese tecaese ses ccee (All), tes, lr DISTIN GUS eee een 351 | IDG) Den eee Ala ihe New, GeNUSwssss esse Gil |} Mbreoyz Chioishonyail -o ae es So Sek aeons s5 =e 383 INL OT Ae ee eee 351 rane vera) 6 soot coco e 381 A Bit jut GIG We ey seer oie meth wee Serene 250i skripudiaybalteatayaassaass === ees saan 414 Viboyexorbis) Inewewehayon Ho Saha A a 28, 29 new species -._------ 489 KROL chon erthe exaieh an ats i apres ee 434 flaviolasciatass-ss2e-= sae aaa 490 TRO GTTS Te OTS ee i NINE Mee 245 RO KOtsh eeiregeh ee eae atin Cet 489 Tortoises, new species of-.-.----.------- 21 IhebpueOseyo oe ae ee ae 414 TS Ore rim pe SST ay MI ak ea UML 364 new species--------- 490 WO GANUS ess SSeS se aT a vo an ae 5d) Dristyla oo 52S ae eee se eee 486 CorHbich arisen on eh aad 46, 54,208 | Trochalopteron simile --_.--.2-...------ 220 EUS CUS Soe wr 2 Re area ce Tatas 46 | vyariegatum simile -_-- 220 PIERO ose S aces ueebes seaese AGSPI MANS oye} uke kr sage Neen iC NG eae | 168 hypOleUCOSE aaa es seed ae 73) irochiluisvailexeia Gieie=55 8) ee eae 57, 92 ny polewcus ieee oem naam 46 | hana: Sipe ee een ee Sac 56 IMMEKOOU EHD Sos ene see cosa esto aceS 46 | colubrisse2. == eee 69, 92 OCHO POS eee ese 46, 207 Tus s. 2s see eee 64 COGAN S ae eee eae eno 2 (ete S) MrochoGyabhil Saas 202 eurhimus, new subspe- ij) Trochonema robbinsSims.s)— = eee 167 . Clee iass aes eeec oes BOT Z08 Salteniis ic s aeeee 167 Pre chit ese see eee ee cece ena 326 similisia. 2835 2325 eee 167 new species ---- 151,163 O INDEX. Page. Page. Trochonema umbilicatum ____..____-.- ole Gin Aa Xemniash ayn anc eee eee a eee 163 Brochonemabidcoeeas seas ee ee ae 167 DH OU AL eer acten ye Cn a ner oe 163 “ADT XOXO DISS eee Bes Sele hae eee IN 151,168,176 | Vaughan, T. Wayland, on new fossil spe- densistriatusea= eae eee 168 cies of Caryo- Keollirnveelibont 5 sou osessokonase = se 168 phyllia from WAS VGMENS 2 Sooo cs 168 California .___. 199 UN OYROTIMNG ED Saas eeteeiS ees espe cee ee 14 onnew genusand MT euMOES vueiees = 52 nee eee Sete 47 species of Tur- MrypaAnocorax fru silesusi 2-2 422255 = 5 228 binolid coral WMemygpe biG eae aan aise S22 eee ee ees 258 from Japan._._ 199,200 MIMO MAe yeep a= lt Sere USE}. acheter aera: . ues ie ee aieele 183 iiuracus macronhynchuss.s)sse4-s5-ess- ake || NATION ON CPM Ele eB Seine aaa hoe Seo 11 Pies oimao Lay oil Op ae ea ee TSG 19S VAN Soniaistelliferae === esse ans 406 Turbinolid coral, from Japan, new Wareorbellltiqpusilliicies sess seen ane 97 SemusaNGspeCles Ole ses ease eee ane es 199, 200 Solibanius{eassimiae sss eee enim TOG Biviras lol Olt cas aees seo ses ee ee ue 184 Foun euiseeeeeee 97 Bis neG dco eee ee Se Se eT WS 2 aes Not mRb i Tee VON WNONS ooo oe es ee 239 Muscat Skeks Ulla oe Se eae PAGS eA iL bb alto lz=\- ameter toe Sa eer Se er re 210 grante, new species -------- 820) | Wiest Africas birds from 22.12.22... 21. alte Turdus aonalaschkee auduboni --------- 98 decapod crustaceans of __- atl aonalaschke auduboni-.---_.----- ilo): Nvdabhincrnyeey se ee es 162 AUG GUSH eae e ne Seen aes ere 247 SiMmetricusi == sssssa 176 oairsloey IS ee eesi ene eat eevee weet dl new species. 151,162 CAMPING DIS Labeed enseooescess acess Zio leaWali hell a tere hahaa a4: Seow Uli eee 163 CAMS eas eae OE eee es eee 222 : AEC HCUSI a seeo ems teee ne See mae liz AUEIIBN oes ses ee ae le tee ah ene 242 new species--__-.-.--. 151,163 leucoraste nis ess ee lees 36 TUS ert lan ale eee Seay ee ee ae 163 MAGA ASCATICNSIS = 95s ee eee 2 RAE AS eels ee ot ee Se ie eee 286, 287 ITT OT yee ore hee te area 79, 99 melanodacty lisse ane 287; TUISHUMA TUS i Lae eee ONG Sra PONTE Osaeees Wee eco nse rane eee a 286 ST ubretauten (ol CU UT US eee ania ae acne 238 [MUI s ceoteosesdes sede ees eas 286 SUTAGeN SIS a) ne ae renee a mee 210 TeV OSUIS oe tee ere ees eee ke 286 Mvilasve dar Gi sees 2 = Ue Ee Saree ae 243 VermMiculatiseaesss sass n ewe 288 Tympanuchus americanus---.-.-------- 66,89 | Xanthocephalus xanthocephalus __..... 57,94 AT OV MIOCERHOMIIS sates oeoss a S55 nese Gabe 274,275 | Xanthodes melanodactylus ---____.___.. 287 ANIC STON Sees ea Bua) |) OSewan Wd aCYOlIIS So 55 Sokoe oo nces Saeoes Goneeaek 286, 287 ey RATIONS peer ee ee ere ne eg ROO Oe DUNC bakUSaeeeee nee eee 287 Bisel See ee Saete peee ee aes OZ EIEN 1 Ci Tall ails rae a Oe tea ee ec 15 AEM OS ocosasonenesoacesesea hey Syn dachyplas ss seer see 15 Ve biCaliSeeee a eaeee eae ne 57,92 | Xenopicus albolarvatus._...._.:..--- Ces 4 OrOn TO GED sou OEE ea ee ea eae Pa Pallas || Ne whabs< Troy ROeHUUIE), 49 AMONG AK veteran ese sa Meet Boe 21 ZA O TOT i eee ase ose a cael re eI 401, 402 lane tienen ease earch eer ee 275, 276 ENF EXSNAN A OS eso ecrosae occas 401 THTOSANE REN, SE = eee a es ape ance ee ee 276 WC WAS CNS eee ae ee mene SH (NA OI Wilolom@laes...3S Ae eee aes AG TN Zit 1 CLE er me ate yt ey lee pte eaies eae 301 United States, Neocene corals of__:_-_. Ge) |) Amore ssc ke eos ee seb oo aeke anos 146 new species of Tortoises ZAPHOpalusicrassius sae eee 406 LROM ao: Me eee eee 2] IVDO HUIS WOO 5 seas ocsecs Sohe 406 Woosebiar ss: ieee eee eae 309 MOWe SCN US ae eee eee 342, 347, 406 Tuna bares sss se ee eee pees 309 Quad Color sesame as 406 Wiriaptrollercalitornicasss n= s