a tte ye tM a ee ree nena he = 1S NZ ae A Ex libr B y) ©) oN = 1) @ J 2S fs AS A f lt MN 0 VAN ll VA ia — Gal ial NS | ae oy. bd ts ete fi Ry k-(-h Gove-r Division of Moll; OTIA CONCHOLOGICA: nal Library DESCRIPTIONS SHELLS AND MOLLUSKS, FROM 1839 TO 1862. Bry AUGUSTUS A. GOULD} M.D: BOSON: Gaon fi Dy ACN Dy .deN iGO. N' 508 WASHING TON STREET. M DCCC LXII, PRESS OF GEO. C. RAND & AVERY, 3 CORNHILL, BOSTON. 2 fe J GH G64 copy] — ~ PRE FA © Be TuE following pages are the result of studies in Conchology, pursued as a diversion during the casual moments which inter- vene in the daily routine of business. They are the product of leisure moments in active professional life, —or1A,—and, indeed, to no small extent, of moments stolen from sleep. Short papers, from time to time, have been published in several periodicals. Extra copies of the sheets relating to the Shells of the Explor- ing Expeditions under Captains Wilkes and Rodgers were secured as they were originally printed. This will account for the diver- sity of type and paper which appears in the volume. To obviate the difficulty of possessing or consulting numerous volumes, I have collected and reprinted, in addition, all the de- scriptions I have hitherto published; making also such emenda- tions as the advance of science during this lapse of time demands. The dates of each imprint will be found at pages 100, 178, or connected with the title of each extract. Boston, April, 1862. EXPE DE TON, Sit Wikis: DESCRIBED FOR THE WORK OF THE UNITED STATES EXPLORING EXPEDITION COMMANDED BY CHARLES WILKES, U.S.N., DURING THE YEARS 1838—1842. Satis OF THE NORTH PACIFIC EXPLORING EXPEDITION UNDER COMMANDERS BING GOL AND RODGERS. CODEC TAN EA: DESCRIPTIONS OF SHELLS AND MOLLUSKS, REPRINTED FROM VARIOUS SCIENTIFIC PERIODICALS, WITH REVISIONS. 1839—1862. RE CELE ALIONS: EXPEDITION SHELLS: DESCRIBED FOR THE WORK OF THE UNITED STATES EXPLORING EXPEDITION, COMMANDED BY CHARLES WILKES, U.S.N. DURING THE YEARS 1838— 1842. Br AUGUSTUS Ac GOULD, M.D. [FRoM THE ‘‘ PROCEEDINGS OF THE BOSTON SOCIETY OF NATURAL HISTORY.” ] BOSTON: PRINTED BY FREEMAN AND BOLLES. 1846. The collection of Shells brought home by the United States Exploring Expe- dition, on its return in 1842, was very extensive, and a large number of the species were then unknown to science. Many of these latter have been since described in Europe from specimens derived from other sources ; and hence can no longer be claimed as additions made to science by the Expedition. . To avoid, as much as possible, a continued subtraction from the credit of dis- covery due to the Expedition, it has been determined to publish brief descriptions of the new Shells, as they are prepared from time to time, in the “ Proceedings of the Boston Society of Natural History,” from which these pages are extracted. In the absence of a complete library and of collections containing authentic specimens, as well as from the difficulty of deciding between species and varieties without the opportunity of collecting, it is too much to expect that some of the descriptions may not prove to have been anticipated; and these the writer would be thankful to have pointed out. In the volume under preparation, more extended descriptions of the shells, together with descriptions of the animals of these and of many other species, will be given, and be fully illustrated by figures. The names to which “ Couthouy MS.” is appended were given by Mr. J. P. Couthouy, the conchologist of the Expedition, in his manuscript notes. Boston, 1846. EXPEDITION SHELLS. Cuiton ticNosus. ‘Testa solidula, ovata, tectiformis, cesia, lineolis fuscis inequalibus subradiantibus marmorata, systemate duplici punctorum majorurh et punctorum minorum impressa ; valvis planulatis, angulatis, sine rostris; areis lateralibus haud elevatis, vix distinctis; valva anteriori parva; valva posteriori vix umbonata: intus eruginosa. Long. 14, lat. % poll. Hab. Puget Sound, Has the form of C. setiger, and somewhat the coloring of C. fulvus, Wood. It is also allied to C. tulipa, Quoy. CuiTon quercinus. Testa depressa, ovalis, vix carinata, quer- cina, maculis olivaceis nubeculata; valvis subrostratis ; areis late- ralibus vix elevatis, longitudinaliter sulcatis, sulcis incumbentibus et sulco radiante bisectis ; areis centralibus ad latera lineis rugosis longitudinaliter sculptis, ad dorsum punctatis ; valva anteriori sulcis concentricis et sulcis radiantibus remotioribus decussata ; valva posteriori prope marginem umbonata ; margine lato, pruinoso, flavescente. Long. %, lat. 2 poll. Hab. New South Wales. Allied to C. foveolatus, Sowerby. Cuiton sucosus. Testa ovalis, carinata, tectiformis, nitida, coloribus pallidé et saturaté herbeis variegata ; valvis planulatis, ad apices adunco-acuminatis; areis lateralibus prominentibus, et lineo- lis confertis parallelis viridibus longitudinaliter notatis ; areis cen- tralibus sulcis acutis parallelis longitudinaliter aratis, sed ad ver- ticem simplicibus et minutissimé punctatis ; valva anteriori con- centricé lineolaté ; valva posteriori umbonata, prope marginem concentricé lineolata, preter aream terminalem triangularem 4 luteolam ; margine granulato, fasciis czeruleis et viridibus limbato : intus pallidé virescens. Long. 1, lat. 2 poll. Hab. New South Wales. Resembles C. Siculus, which, however, has radiating lines on the lateral areas. CuirTon Fruticosus. Testa ovalis, valdé elongata, transversim arcuata, omnino textiliter punctata, olivacea, maculis minutis saturatioribus fulgurantibus variegata ; valvis haud rostratis ; areis lateralibus prominentibus, et lineis elevatis interruptis ramosis ra- diatis; areis centralibus lineis longitudinalibus rugosis, ad latera profundis, ad dorsum evanidis et arcuatis sculptis ; area posteriori magna, umbonata, lineis inconspicuis, interdum divaricatis, radi- ata: intus flavo-olivacea : ligamentum latum, pallidum, minutis- simé granulatum. Long. 14, lat. 3 poll. Hab. New South Wales. Resembles fig. 61 of Sowerby’s Conch. Illustr., which is said to be a variety of C. Indicus, but which has no ramose sculpture on the lateral areas. CuIToN pLATEssA. ‘Testa parva, tenuis, elongato-ovalis, trans- versim arcuata, citrino-olivacea, ubique minutissimé punctata ; areis lateralibus parvis, vix elevatis, lineis 2-8 inconspicuis striatis ; areis centralibus lineis confertis acutis granulatis arcuatim decus- satis; valva posticé magna, obscure radiata; margine virente, fusco tessellato, minutissimé granulato: intus ceruleo-virescens. Long. 2, lat. 9; poll. Hab. New South Wales. Similar in its general aspect to C. fruticosus, but smaller, smoother, and the sculpture of the lateral areas and terminal valves entirely different. It is almost exactly like fig. 67 of the “¢ Conchological Illustrations.” Cuiton sasPipeus. ‘Testa ovata, tenuis, carinata, ubique mi- nutissimé punctata, coloribus rosaceis plus minusve saturatis picta; areis centralibus lineis minutis granosis confertissimé stri- atis; areis lateralibus indistinctis, et lineis 3 ad 4 sparsé granu- osis radiatim notatis ; valvis terminalibus granoso-striatis, postica excavata; margine coriaceo, pruinoso. Long. 1, lat. 7% poll. Hab. Callao. Resembles, in size, shape, and sculpture, C. apiculatus, Say ; but the sculpture is more delicate, and the color, resembling some varieties of jasper, is quite distinctive. 5 Cuiton pruinosus. ‘Testa parva, oblongo-elliptica, convexo- elevata, subcarinata, coloribus variis olivaceis, cinereis, et fusco- rubris irrorata et maculata; areis centralibus sub lente omnino quincuncialiter punctatis; areis lateralibus longitudinaliter im- bricato-striatis : intus virescens: margo minutissimé granulatus, coloribus fuscis et cinereis tessellatus. Long. 35, lat. 3% poll. Hab. Rio Janeiro. The sculpture of this very variably-colored species is sufb- ciently characteristic. Between the strie are usually found minute pores, probably produced by some parasite. Cu1ton vigiputus, (CourHouy MS.) ‘Testa tenuis, oblongo- ovata, dilutissimé olivacea, ad dorsum sub-carinata, utrinque sub- canaliculata, ubique sub lente quincuncialiter insculpta; areis centralibus et lateralibus parum distinctis ; lineis incrementi prope marginem conspicuis ; valvis terminalibus leviter radiatis : margo minutissimé squamatus. Long. 2, lat. 35 poll. Hab. Orange Harbor. CuiTon PuNicEuS, (Cournovy MS.) ‘Testa parva, oblongo- elliptica, elevata, ad dorsum carinata, punctatissima, punicea, gradibus etatis conspicuis obtusis signata: areis lateralibus pre- rupté elevatis, et sparsim granulatis; areis centralibus costulis longitudinalibus parallelis ad 6, plerumque ad medium dislocatis, clathratis ; valva posteriori rostro parvulo acuto et septo transver- sali notato: ligamentum minutissimé imbricatum, adversum su- turas albido fasciatum. Long. 3, lat. 3 poll. Hab. Orange Harbor. Very much resembles C. ruber, Lowe. Cuiton conFossus. Testa parva, ovata, fastigiata, pallida, roseo et incarnato concinné variegata; valvis rostratis; areis lateralibus elevatis, serie posticé squamarum et serie obliqua squamarum majorum ad apicem spectantium finitis ; intervallo levigato, et granulis paucis annulatis sparso; areis centralibus plerumque levibus sed punctis sparsis triangularibus retrospec- tantibus confossis ; valva posteriori valdé gibbosa, umbone feré terminali, dentibus insertionis 9, et ad valvam anteriorem 25, pec- tinatis: margine fusco, carnoso. Long. 8, lat. poll. Hab. Fee- jee Islands. Allied to C. scu/ptus, Sowb., which has three lateral rays and the central areas smooth. 6 CHITON PETALOIDES. Testa parva, tenuis, ovalis, arcuatim elevata, subcarinata, dilute citrina ; areis lateralibus elevatis, ru- gosé granulatis, et striis radiantibus ad 4 insculptis ; areis centra- libus longitudinaliter rugosé granulato-punctatis, et lineolis tenu- issimis angulatis diluté violaceis pictis; valva posteriori acuté umbonata et costa transversali divisa : margo stramineus, minutis- simé granulato-imbricatus. Long. 3, lat. 2 poll. Hab. Sand- wich Islands. A very beautiful and peculiar shell, its markings resembling the venated petals of some flowers. CHITON DENTIENS. ‘Testa minima, ovata, carinata, olivacea, ad dorsum albido fulminata, omnind minutissimé granulata ; areis vix distinctis ; valvis rostratis postice subdenticulatis, dentibus albi- dis: margo pruinosus. Long. 4, lat. 3, poll. Hab. Puget Sound. Resembles C. alternatus, Sowb., which, however, has radiating ribs upon its lateral areas and terminal valves. CuiTon incanus. ‘Testa solida, oblongo-ovalis, valdé convexa, cinereo et nigro variegata, concentricé undulato-striata, granulis sparsis nigris aspersa, ad dorsum subcarinata et longitudinaliter nigro bifasciata; areis lateralibus vix distinctis : margo aculeis inequalibus curtis curvatis nigris et canescentibus indutus. Long. 1,3,, lat. # poll. Hab. New South Wales. Like C. piceus, Gray, in general appearance, and still more like C. petholatus, which has a hairy margin. Cuiton muscosus. ‘Testa ovalis, depressa, scabra, ad dorsum obtusa, cinereo bifasciata et plumosé striata; valvis magnis, latera- liter disjunctis ; areis lateralibus parvis, granulis subquadratis radi- antibus arcuatim tessellatis ; areis centralibus sulcis acutis confertis flexuosis subparallelis longitudinaliter aratis ; valva antica magna, semicirculari, decemcostata et granulis subquadratis insculpta ; valva posteriori parva, costa transversali inconspicua subtermi- nali: margo latus, filis corneis imequalibus muscosis indutus. Long. 2, lat. 11 poll. Hab. Puget Sound. Allied to C. brevispinosus, but its sculpture and margin are quite distinct. PATELLA TALCoSA. ‘Testa magna, solida, ponderosa, ovato- rotundata, depressa, costulis radiantibus numerosis sub-equalibus 7 rotundatis flexuosis instructa, vertice sub-centrali, colore satu- raté cinnamomea ; facies interna talcoso-argentata, purpureo tincta ; callo centrali crasso, albo, spatuliformi, ad marginem radiato ; impressione musculari lato, profundo: margo crenulatus. Long. 4, lat. 31, alt. 12 poll. Hab. Hawaii, Sandwich Islands. The colors of the interior, in small specimens, are very rich, and the shell is of a rounded shield-like form, like P. testudinaria, attaining sometimes a very large size, larger than any other spe- cies except P. pyramidata. PATELLA SAGITTATA. Testa tenuis, translucida, ovato-rotundata, depressa, fusco-viridis, nigro obscure radiata, subtilissimé granu- loso-striata, apice antico, acuto, incumbente ; margine integro : facies interna argentea, cum reflexionibus succineis, et interdum fusco radiata; fundo (luce transmisso) elegantissimé reticulato, et maculis sagittatis radiato. Long. l4.lat. 1,5, alt. 2. Had. Feejee Islands. This delicate and beautiful species is allied to P. testudinaria, but is more depressed and more delicate in all its characters, and its peculiar marking, as seen by transmitted light, like some of the Navicellze, distinguishes it. It was the only species collected at the Feejee Islands. PATELLA ILLUMINATA. Testa inequilateralis, ovato-conica, fuli- ginosa, maculis sparsis flavidis translucidis illuminata, creberrimé radiatim costellata: apertura ovata; facies interna nigro-picea, sericeo splendens ; fundo flavido. Long. 14, lat. 14, alt. 2 poll. Hab. Auckland Islands. In shape like P. argentea, with the interior of P. tramoserica. It may be the young of what is figured by Quoy as P. granu- laris. PATELLA FIMBRIATA. ‘Testa elevata, obliqué conica, fusco-pur- purea, cinereo tincta, costulis distantibus rotundatis radiata, costu- lis tuberculos fornicatos in seriebus concentricis instructos geren- tibus ; apice acuto subcentrali : apertura ovata, limbo lato, nigro pectinato: facies interna nitida, ceeruleo-alba, secundum costulos radiata, fundo saturatiori. Long. 12, lat. mye alt. 3%. Hab. Straits of De Fuca. Much like a small P. granularis in shape. The undulations within, corresponding to the ribs, are marked with unusual dis- 8 tinctness. Its ribbed surface and destitution of striz distinguish it from all the varieties of L. pintadina. PATELLA cITRULLUS. Testa depresso-conica, sub-equilateralis, translucida, extus rugoso-undulata, prope apicem lineis granuli- feris radiata, pallidé olivacea, intus nitida, plumbea, fundo albido : apertura rotundato-ovata; margine expanso, acuto. Long. 13, lat. 12, alt. $ poll. Hab. Funchal, Madeira. This shell resembles somewhat the skin of a cucumber, exter- nally. The radiating strize occupy the upper half of the shell, and the lower half is somewhat imbricated by the stages of growth. It is somewhat like P. Candei, D’Orb. PatELLA Paumorensis. ‘Testa solida, albido-cinerea, ovalis, depresso-conica, apice sub-centrali, costis acutis radiantibus irre- gularibus ad 40 instructa: facies interna alba vel diluté incarnata ; impressione musculari callosa, alba vel citrina ; area centrali fer- ruginea vel incarnescente: margo costis dentatus, spatiis inter- costalibus fusco tinctis. Long. 12, lat. 14, alt. 4 poll. Feejee’s. Long. 13, lat. 14, alt. 2 poll. Wilson’s I. Long. 14, lat. 1, alt. 2 poll. Rose L. Allied to P. tramoserica, but its colors are generally dull and dead, instead of silky. Generally, eight or ten of the ribs are more prominent than the rest The prevailing color of the in- terior is that of ripe muskmelon. Sometimes there are dusky spots between the ribs, It seems to be found at all the islands of the Paumotu group, and as far as Taheiti. PaTELLA Luctuosa. ‘Testa obliqué conica, crassa, vertice eccentrica, obscuré olivacea, interdum sanguineo tincta, costis ma- joribus ad 12 rotundatis, scabrosis, pallidis, minoribus quibusdam interjectis : apertura ovalis; margine crenulato: facies interna livida, reflexionibus succineis micans ; limbo fasciis fuscis et al- bidis inequalibus alternantibus radiato. Long. 14, lat. 1, alt. 3 poll. Hab. New Zealand. Unusually rough and irregular of surface, not unlike coarse specimens of P. vulgata, but the interior sometimes rivals P. tra- moserica. PATELLA PIPERATA. Testa scabrida, oblique conico-depressa, olivacea, costato-striata, costis majoribus pallidioribus cum lineis saturatioribus interruptis aspersis, apice eccentrica, acuta: aper- tura ovata; margine crenulato; facies interna livida, fundo ferru- gineo, radiis albidis insigni. Long. 14, lat. 85, alt. 4 poll. Hab. Cape de Verds and Madeira. Somewhat like what I suppose to be P. scutellaris, from the Mediterranean, especially its interior, but more elevated and less elongated. PATELLA INSTABILIS. Testa olivaceo-cervina, elongata, ele- vata, ad latera compressa, creberrimé radiatim striata, apice sub- centrali, obtusa, castanea : apertura oblongo-elliptica ; margine integro: facies interna lactea. Long. 14, lat. 37, alt. 38; poll. Hab. Puget Sound. Resembles P. compressa, but is more smooth and solid, and the apex more nearly central. It may have derived its form from being attached to some arched body. PATELLA CINNAMOMEA. ‘Testa parva, ovalis, convexa, tenuis, cinnamomea, cum striis radiantibus, tenuibus, confertissimis, im- bricato-asperis, apice acuto, antico, ad marginem valde decli- nato; apertures margine anteriori excurvato, intus costa alba marginali munito. Long. 4, lat. 3, alt. 9 poll. Hab. Néw South Wales. Closely allied to P. Galathea, Lam. which, however, is snow- white, more circular, the apex more central, and the striz much coarser. PaTELLA conica. Testa parva, conoidea, elevata, valdé regu- laris, inornata, vel lineolis obsoletis radiantibus et concentricis striata ; colore luteo-cinereo: apertura rotundata, margine sim- plici, limbo marginali planato. Long. $8, lat. 4, alt. 3 poll. Hab. Puget Sound. Similar to P. scurra, Lesson, but is more elevated, less sym- metrical, and more delicate in structure and markings, especially in the radiating striee. Lorria pintapina. Testa diversissimé figurata et picta, tenuis, ovato-rotundata, radiatim et confertim striata, smaragdina, inter- dum fuscescens vel cinerascens, maculis crebris albidis tessellata aut radiata ; apice plerumque sub-centrali, plus minusve elevata : facies interna ceruleo-albida, nitens ; fundo piceo; limbo lato, piceo et albido tessellato. Long. 2, lat. 13, alt. 2 poll. Had. Straits of De Fuca, Puget Sound, and Mouth of Columbia River. 2 10 This very variable species is the analogue of L. testudinalis of the North Atlantic waters, though larger. Two well-marked varieties may be noted. One tessellated with about equal pro- portions of green and whitish, the interior marginal limb broad and tessellated, the dark color predominating. In the other the colors are arranged rather in stripes, the internal limb is nar- rower, and the light color predominates. Very probably L. scu- tum, Esch. is only another variety. Lorria cymsBiona. ‘Testa solida, depresso-conica, arcuata (apice eccentrica) glauco et fusco-olivaceo radiata, radiatim cre- berrimé puncto-striata: apertura elliptica, margine minutissimeé crenulato: facies interna, albida, spadiceo sordidata ; limbo lato, fusco et albo tessellato. Long. 3%, lat. 7%, alt. 33, poll. Hab. Bay of Valparaiso. A small, rather smooth shell, arched in every direction, in consequence of attaching itself to other shells. When fresh it is very prettily radiated. Parexta (Lorria?) textizis. Testa depressa, obliqué conica ; apice anferiori, acuto; costis latis, elevatis, subplanulatis, nodosis ad 15 radiantibus ; epidermide viridi, punctis albidis quadratis reticulato : basi ovato-rotundato, limbo marginali albido et fusco- viridi fimbriato: facies interior albida; fundo piceo. Long. 1, lat. 3, alt. 33; poll. Had. Straits of De Fuca and Killimook. Like some varieties of P. viridula; but its base is less orbicu- lar, its color is darker green, and the reticulations are finer and less in zigzag; the ribs are less numerous, nodular, and not paler. Its remote locality favors the idea of its being distinct. PaTeLLa (Lorria?) scaBra. ‘Testa parva, scabra, per-inequila- teralis, obliqué arcuato-conica, pallidé virens, nigro diversemodé virgata, costis radiantibus scabrosis ad 15 ornata; basi ovata : facies interna albida; fundo piceo, limbo marginali viridulo et piceo fimbriato. Long. 4%, lat. §, alt. 3 poll. Hab. San Fran- cisco. About the same size, and may be only a variety, of P. tewtilis. Its arched form, rough surface, coarse black stripes, and different locality, seem to warrant its separation. Pareuia (Lorria?) aARANEosA. ‘Testa parva, tenuis, depresso- conica, sub-equilateralis, levis, pallidé virescens, ramulis rubigi- 11 nosis araneosis reticulata: facies interna albida ; margine sim- plici, acuto; limbo marginali planulato, rubiginoso, radicoso. Long. §, lat. 3, alt. $ poll. Hab. Sooloo Sea. A pretty little shell, most probably a Lottia, resembling some of the species figured by Quoy, especially his orbicularis. In- deed it is so like the reticulated variety figured in Pl. LXXI. fig. 33, that the examination of a more extensive series might show them to be identical. SrpHoNARIA cornuTA. ‘Testa rudis, fuliginosa, valdé depressa, per-inequilateralis, radiatim striata, apice submediano, costis ad 15 inequalibus, ultra marginem prolongatis, preecipué costa supra- siphonali: cavitas parva, minimé profunda, dextrorsum effusa ; limbo marginali expanso, albo, vel fusco inter costas radiato. Long. 1, lat. 37, alt. + poll. Hab. Mangsi. Allied to 8. atra, to which it may possibly be traced by its va- rieties ; but it is more elongated, less symmetrical, and the ribs, which are much more numerous on the left than on the right side, surpass the margin to a much greater extent. SIPHONARIA INCULTA. ‘Testa parva, crassa, irregularis, de- presso-conica, costulis 20-24 radiata; apice sub-centrali: cavitas profunda, latere sinistro precipiti, latere dextro declivi; fundo fusco nubeculato ; cicatrice musculari profunda ; limbo marginali expanso, sericeo, hepatico; margine costulis dentato. Long. qs, lat. $4, alt. t poll. Hab. New Zealand. A small, rugged-looking species, easily distinguished by its irregular, one-sided form, and its liver-brown interior. SIPHONARIA LATERALIS, (CoutHouy MS.) ‘Testa parva, fra- gilis, inequilateralis, perobliqua, oblongo-ovalis, olivacea, sursum fuscescens, costulis radiantibus ad 25 obtusis, nodosis, subequali- bus: intus hepatica ; cicatrice musculari inconspicua. Long. 3, lat. 2, alt. + poll. Hab. Burnt Island, Orange Harbor. This might be regarded as the young of 8. Lessoni. But be- sides essential differences in the animal, the great inequality of the two sides, the peculiar position of the apex and the more coarse and nodular ribs, give it a peculiar character. SIPHONARIA LEPIDA. Testa parva, tenuis, ovato-rotundata, depresso-conica, cinereo-olivacea interdum violaceo tincta; apice submediano, obtuso ; costis radiantibus numerosis depressis, quo- 12 rum ad 12 majoribus, albicantibus ; striis incrementi confertis, laxis: intus livida, albido radiatim lineata ; margine vix crenulato, pallescente. Long. 3%, lat. 35, alt. 33, poll. Hab. Rio Janeiro. Allied to 8. plicata, Quoy, which, however, is described as solid, its summit recurved, its ribs equal, its interior pale horn color, radiated with pairs of reddish lines, and is found at Tonga- taboo. SIPHONARIA NoRMALIS. ‘Testa parva, tenuis, symmetrica, basi rotundata, elevato-conica, fusco-cinerea, creberrimé costato-stri- ata, striis subequalibus : subtus fundo castaneo, limbo marginali mustelino, cicatrice bené impresso; margine acuto, ad canalem siphonalem angulato, albido lineolato. Long. +4, lat. 35, alt. 35 poll. Hab. Sandwich Islands. A small, delicate species, very different from any I have seen. Its circular base, regular conical form, very numerous rib-strie, and peculiar pale chocolate color distinguish it. EMARGINULA ASPERA. Testa parva, tenuis, depresso-conica, fuliginosa ; costis elevatis quadratis plerumque duplicibus ad 10 albidis, ad intervallos striis crebris decussantibus exasperatis ; vertice subcentrali, acuto, recurvo: intus glauca, albido radiata ; margine denticulato: incisura angusta, profunda, intus in cana- lem versus apicem producta. Long. 45, lat. 3%, alt. 385 poll. Hab. Sydney, New South Wales. Much like E. rugosa, Quoy, in size and form, but differs in color, sculpture, and the larger size of the notch. EMmarGINuLA FuNGINA. © Testa parva, solidula, elliptica, cine- reo-virens ; costis radiantibus, parvulis, quarta quaque majori, rotundatis ; apice mediani, erecto : intus viridula, cicatrice mus- eulari intrinsecus atri-limbata; margine smaragdino, eleganter crenulato : incisura lata, modicé profunda, intus in canalem ad verticem producta. Long. J, lat. 3, alt. + poll. Had. Upolu. A very pretty species, somewhat resembling E. parmophoidea, Quoy, but differs in the dark coloring along the inner margin of the muscular impression, forming the figure of a toadstool, and in the greater development of the notch. } Emarcinuta ossga. Testa crassa, rudis, albida, quadrangulari- elliptica, costis radiantibus numerosis inequalibus acutis, et striis incrementi decussata; basi arcuato, margine crenulato; cicatrice 13 musculari bené impressa: incisura haud profunda, intus vix in canalem producta. Long. +85, lat. =9, alt. 3% poll. Hab. Feejee Islands. Allied to E. australis, Quoy, but is much smaller and less deeply checkered. EMARGINULA CINEREA. ‘Testa cinerea, E. osseo similis, sed tenuior, altior, magis disposité et delicate clathrata: cicatrice musculari inconspicua: incisura minimé profunda, in canalem interiorem valdé insignem producta. Long. 3, lat. 4, alt. ? poll. Hab. © Similar to the preceding, but far less solid, and much more regularly and delicately cross-barred; and if the size of the notch, the development of its canal, and the depth of the muscu- lar impression, are important characters, they are certainly distinct species. FISSURELLA CRATITIA. ‘Testa solida, elevata, ovalis, albida, radiis fuscis ad 16 picta, lineis elevatis radiantibus et concentricis sub-equalibus profundé imbricato-cancellata : apice sub-centrali, intus alba; margine inequaliter crenulato: foramen apicalis sub- rotunda. Long. 2, lat. 12, alt. $ poll. Hab. Puget Sound. It has the general aspect of F. maxima, but is sculptured like F. Greca. FIssURELLA VERNA. ‘Testa solida, striata, ovalis, symmetrica, depresso-conica, cinereo-viridescens, atro-purpureo radiata, costis ad 20-30 sub-elevatis, planis, interstitiis adequantibus ; vertice subcentrali, purpureo: fissura parva, ovalis; margine crenato : intus alliacea, fissure limbo radiatim striato, purpureo marginato. Long. 13, lat. 14, alt. 3 poll. Hab. Port Praya, St. Jago Island, Cape de Verds. Much like F. obtusa, Sowb., but more elongated, and with its ribs, more numerous rays and faintly scolloped margin, as well as its distant locality, it may be regarded as a different species. Some specimens are not rayed, and others are entirely dark purple. FIsSURELLA OCCIDENS. Testa ovata, conica, valdé elevata, radiatim multistriata, fasciis atro-purpureis ad 15 et fasciis rosa- ceis alternantibus radiata, apice subcentrali: apertura ovata : facies interna nivea, margine latiusculo viridulo fusco tessel- 14 lato: fissura ovali-rotundata. Long. 1,%,, lat. 144, alt. 33 poll. Hab. Callao. In shape and color it agrees with F. caffra, Chem., from the Cape of Good Hope, and also with F. Praya, Quoy. It is re- markable for its elevated, conical form, and dark, radiate ex- terior. Rimvuta cucuttata. ‘Testa solida, cinerea, per-inequilateralis, costis ad 40 acutis, compressis, majoribus et minoribus alternanti- bus radiata, et striis concentricis confertis muricata; apice ele- vato, acuto, adunco, prorsum spectante : fissura lanceolata: aper- tura ovata; margine sulcis inequalibus alternantibus crenulato : facies interna porcellana ; fornice tenui, simplici, arcuato. Long. lat. 7, alt. 2 poll. Hab. Puget Sound. A large and curious species, its very inequilateral form giving it the aspect of a Hipponix. It is less elevated in proportion to its base than any other known species. ‘The ribs are very regu- lar, and sometimes still finer rays are found in the interstices. 39 Rimvuta GALeaTA. ‘Testa solida, cinerea, elevata, globoso-coni- ca, apice centrali, acuto, prorsum porrecto, striis filiformibus con- fertis radiata, et striis minoribus concentricis decussata : fissura brevis, fusiformis : apertura rotundato-ovalis ; margine expanso, acuto, minutissime crenulato; fornice costa transversali anticé suffulto, fossam trigonalem utroque latere formante. Long. 58, lat. 85, alt. 5 poll. Hab. Puget Sound. Differs from the preceding in shape, sculpture, and in the in- terior rib, which props the fornix, and forms, two pits, which, with the fissure, remind one of the openings for the eyes and nose in the human skull. Two small species of Rimula were found at Orange Harbor, one of which is probably R. conica, D’Orb., and the other I name R. coenata, which is similar to the preceding and to R. Noachina, but more depressed. ‘These were found living, and will be again noticed when describing the animal. CREPIDULA ROSTRIFORMIS. ‘Testa solida, levis, castanea, ele- vata, recurva, ad basim rotundato-ovalis ; apice postico, adunco : lamina interna parva, alba, profundé sita, versus apicem pene- trans; margine arcuatim sinuato. Long. #, lat. 4, alt. 2 poll. Hab. Straits of De Fuca. 15 I am acquainted with no other species where the apex is so elevated and so remote from the margin of the shell. It looks like a very obtuse-angled bird’s-beak. The specimen examined had numerous rib-like folds on the surface, which were probably caused by its adhesion to some ribbed shell. CREPIDULA LINGULATA. ‘Testa parva, depressa, obliqua, rotun- data, alba, lineis numerosis crebré divaricantibus radiata, epider- mide pallido induta; apice acuto, libero, propé marginem sito : intus lutescens ; septo linguiformi, excavato, ad medium carina diviso et obliqué protruso, ad latus sinistrum profundé sinuato. Diam. j, alt. 3 poll. Hab. Puget Sound. Like C. capensis, Quoy. The only specimen examined seems to have been convex and solid in its early growth, afterwards becoming flat. CREPIDULA NuMMARIA. ‘Testa tenuis, plana, circularis, alba, Striis incrementalibus laxis insculpta, epidermide flavo-cornea induta ; apice vix conspicuo, marginali: septum internum latius quam longum, deorsum fornicatum ; margine flexuoso: cavitas feré nulla. Diam. 2 poll. Had. Classet. This very peculiar shell is well characterized by its perfectly flat, circular form. It probably grew within some other shell, and other specimens may be found moulded into a different form. It is separated from C. lingulata by the form of its septum. CaLyprr#a FasTiciaTa. ‘Testa parva, tenuis, levis, rotun- data, elevato-conica, concentricé et tenuissimé striata, epider- mide fusescente induta; spira anfract. 3 planulatis, apice sub- mediano, acuto: lamella interna spiralis, striata margine libero ad centrum duplicato, haud appresso, umbilicum parvum efformante. Diam. 3, alt. § poll. Had. Puget Sound. _ In shape, size and interior, it scarcely differs from C. pileolus, D’Orb., but that shell is white, has a rough surface, and is radi- ately ribbed about the summit. It also resembles C. squama, Brod. CaLYPTREA RADIOSA. Testa irregularis, tenuis, alba, lucida, ad basim rotundata, obliqué globoso-conica, lineis acutis numero- sis elevatis cum striis tenuissimis intercalariis radiata; apice postico, obtuso: lamella interna elongata, semi-volutata, per- oblique truncata ; cornubus lanceolatis ; basi attenuato. Diam. 2, alt. 7% poll. Hab. Mangsi. 16 Differs from C. equestris, lithedaphus, and other similar spe- cies, in having rather distant, regularly-disposed raised lines, with intervening smaller ones, instead of their being all of uni- form size. CatyprR#A CHLORINA. ‘Testa irregularis, tenuis, concentricé undosa, lineis elevatis acutis confertis radiata, ad basim subcir- cularis, oblique pyramidata, epidermide tenui chlorico induta ; apice elevata, posteriori, spirali, cernuo: intus nitida, porcellana ; margine evoluto, acuto ; lamina interiori semi-cyathiformi, brevi, reflexo, obliqué truncato. Long. 3, lat. 58, alt.+ poll. Had. Port Praya, Cape de Verds. Allied to C. equestris. Its depressed, orbicular and compara- tively regular form, its short cup, and its color, are its character- istics. Hirronrx impricata. Testa solida, obliqué elevato-conica, rubescens, costulis acutis radiantibus 40-50, et lamellis concen- tricis concinné imbricato-clathrata ; apice submediano : apertura rotundato-ovata : intus coccinea. Long. 43, lat. $4, alt. 34 poll. Hab. Sandwich Islands. Most like H. pilosa in sculpture, though the pattern is much coarser. ‘The apex is far more central and elevated. The color of the interior is like H. foliacea, but more intense. PILEOPSIS CRYSTALLINA. Testa parva, candida, crystallina, nitidissima, semiglobosa, ad basim ovata, sulcis profundis creber- rimis radiantibus acutis insculpta; apice terminali, acuto, vix curvato, submarginali: subtus ad marginem anticé acuminata, posticé septiformis. Long. 4, lat. 2, alt. t poll. Hab. Feejee Islands. The beautiful crystalline, quartz-like lustre of this shell, its deep, regular sulci, and its crepiduloid base very distinctly mark this species. Hetix tasiosa. Testa depresso-conica, subtus convexa, arcté umbilicata, luteo-cornea, pilis sericeis quincuncialiter dispositis undique villosa: spira anfr. 6 convexis, ultimo immodicé cres- cente et pone labrum valdé contracto : apertura angusta, lunata ; labro albo, laté revoluto; fauce livida. Lat. 4%, alt. 7% poll. Hab. Astoria, Oregon. Closely allied to H. palliata, but is smaller, lacks the tooth on 17 the columella, which, with the greater convexity beneath, and the rapid enlargement of the last whorl near the aperture, are sufficiently distinctive characters. It seems to be nearly like H. Columbiana, Lea, a shell with which I am not acquainted. Hex toricata. Testa parva, depressa, flavo-viridis, arcté umbilicata, squamulis crescentiformibus undique loricata, subtus convexa: spira anfr. 54 convexiusculis, arcté volutis, ultimo su- perné ad peripheriam subangulato: apertura contracta, lunata, trilobata, dente laterali, dente basali, et dente columellari lamelli- formi Ai i ; peristomate albo, reflexo, callo copioso conjuncto. Lat. , alt. 2; poll. Hab. California. Bint much like H. inflecta, but smaller, and teeth less devel- oped. Its peculiar surface, resembling a scaly coat of mail, is highly characteristic. Heix previa. Testa orbiculato-depressa, obliqué striata, diluté viridi-cornea, umbilico modico canaliculato perforata: spira anfr. 6 convexis, ultimo ad peripheriam rotundato: apertura transversa, obliqué lunata, ad anfractum penultimum unidentata, dente trigono ; labro albo, laté reflexo, ad basim horizontali, um- bilicum aliquanto ambiente. Lat. 4, alt. 8, poll. Had. Ore- gon. ? Much like H. pedestris, but more solid, and lacks the pecu- liar wrinkling of the epidermis. The lip is more broadly re- flected, and the aperture toothed. Placed by the side of the southern variety of H. palliata, somewhat blanched, it would hardly be distinguished except by the umbilicus. Heiix cuitosa. Testa globulosa, crassa, rudis, sub-perfo- rata, obsoleté carinata, pallidé castanea, colore saturatiori nu- bilata, et interdum fasciata: spira anfr. 6 rotundatis, striatis ; ultimo amplissimo, et obsoleté costato-carinato ; sutura profunda : apertura magna, rotundata, fauce livida ; labro modicé reflexo, albido, propé columellam latiore, umbilicum rimatum tegente. Lat. 1,4, alt. 4, apert. 2 poll. Hab. New South Wales. Remarkable for the great altitude of its outer whorl and its large aperture. It is like H. Cae ineraiay in fea Hi. albola- bris in texture, and H. badia in color. “A Ast pa! Henix ziczac. T. parva, rotundata, depressa, stramineo-albi- da, lineolis obliquis fulminantibus fuscis picta, et laminis acutis 3 18 confertis reflexis pilosis lyrata: subtus convexa, umbilico magno scalariformi perforata: spira anfr. 6 convexis, angustis: apertura subcircularis, ad basim ee ; labro simplici, propé umbili- cum reflexo. Lat. ;3,, alt. 4 poll. Hab. New South Wales. A very beautiful shell, tinlilze any other described except H. dissimilis, D’Orb., which is larger, more dotted, and is not noted as hairy. In general form, striation, umbilicus, &c., it is like H. striata. Hetix pepestris. ‘Testa rudis, depresso-globosa, laté perfo- rata, luteo-cornea, ad apicem virens, striis incrementalibus con- spicuis inequalibus, et striis minutissimis confertis volventibus decussata: spira anfr. 54} convexiusculis ; ultimo ventricoso, prope aperturam deflexo: apertura obliqua, transversa, rotundato-luna- Tiss pees caine albo, ad basim dilatato, juxta columellam sinuato. Lat. Z, alt. 4 poll. Hab. New South Wales. It has the shape aad aspect of H. zaleta, but is more like H. profunda inferiorly. Instead of the usual sliding motion of the Helices, the mollusk of this shell flexes its foot into about four vertical undulations, so Yn. b, IF ' as to touch the plane of motion at as many points only ; and these | undulations pass from the head towards the tail, as in the motions \ of a caterpillar or a millipede. Hewix srricosa. Testa orbicularis, depressa, scabrata, late umbilicata, cinereo-grisea vel fuscescente, fasciis linearibus vol- ventibus pallidé fuscis interdum subtus notata: spira anfr. 5 con- vexiusculis ; ultimo angulato et prope aperturam deflexo : apertura circularis ; labro simplici, continuo. Lat. 3%, alt. 2 poll. Had. Interior of Oregon. Of the shells of this continent, it may be compared with H. alternata in form; but in its opaque and rugged aspect, and in most of its characters, it nearly resembles H. nae of Europe. HeELix sporTELLA. Testa planulata, fragilis, nitida, luteo-cor- nea, subtus concava, laté umbilicata, lineis incrementi conspicuis et lineis volventibus subtilissimis confertim decussata: anfr. 5, ultimo magno; sutura profunda: apertura rotundata, infra suban- gulata ; labro acuto, simplici. Lat. 3, alt. 1} poll. Had. Puget Sound, Oregon. Much like H. concava, but has a smaller umbilicus, and larger 49 aperture, and the transverse incisions of the striz are sufficiently distinctive. Hewrx mutata. T. orbicularis, depressa, tenuis, cerina, infra rotundata: spira anfr. 4 convexis, nitidis, junioribus . glabratis, majoribus supra crassi-striatis, subangulatis ; sutura impressa : subtus glabra, sulcis radiantibus remotis radiatim divisa, umbilico modico perforata; apertura ampla, lunata, basi subangulata ; labro simplici. Lat. 585, alt. 3;. Hab. Rio Janeiro. Not unlike H. alliaria, or small specimens of H. cellaria, in general aspect; but it is more globose and coarsely rib-striate, like H. Pennsylvanica. It may be H. insignis, D’Orb. Heiix tyrata (Cournovy MS.). Testa minuta, depressa, rufo-cornea, umbilicata: spira anfr. 4 cylindricis, et striis elevatis confertis lyratis ; sutura canaliculaté: apertura circularis ; labro simplici. Lat. 1, alt. 54, poll. Hab. Terra del Fuego. About the size and color of H. rupestris, but more depressed, and with a less expanded umbilicus. It may be H. costedlata, D’Orb. Herx pusittus. Testa minuta, tenuis, depressa ; supra ob- lique striata, albido-virens ; infra viridior, sub-polita, perforata : spira anfr. 4 sub-planulatis; sutura profunda: apertura circu- laris; labro simplici. Long. 7%, lat. #5 poll. Hab. Mountains of Maui, Sandwich Islands. Scarcely to be distinguished from H. electrina, Gould, in size and form, but it is more coarsely striated. It is also like H. spr- rillus, but has a much smaller umbilicus. Hetix saxaTiuis (Cournovy MS.). Testa parva, sub-globosa, lucida, viridis, infra convexa, umbilico modico perforata, leviter striata: spira anfr. vix 4 cylindricis, citO crescentibus ; sutura ca- naliculataé : apertura sub-orbicularis, ampla; labro simplici, feré continuo. Alt. =4, lat. + poll. Hab. Terra del Fuego. Resembles, in general, H. lucida, and is remarkable for its globular form and fresh green color. Heuix Exzquata. T. parva, discoidea, tenuis, lucida, gla- brata, succineo-cornea, ad peripheriam rotundata, infra sub-plana, in foveam centralem devexa: spira anfr. '7 arcté volutis, supra planulatis, sutura marginata bené impressa discretis, spiram pla- nam efformantibus : apertura angusta, transversa ; labro simplici, 20 portione sinistra feré horizontali, recedente, subreflexa. Lat. 35, alt. 33. Hab. Kauai, Sandwich Islands. A very beautiful and polished symmetrical shell ; beneath like H. interna and indentata. Hextx cicercuta. ‘'T. depresso-globosa, tenuis, sub-opaca, im- perforata, albido-virescens, striis incrementi conspicuis et striis volventibus sparsis insculpta: infra rotundata, fovea centrali modica: spira anfr. 5 convexis, ultimo angulato: apertura lu- nata; labro simplici; columella superné vix reflexa. Lat. 4, alt. 53; poll. Hab. Mountains of Hawaii. Distinguished from the other small subglobular shells here mentioned by its pea-green color and more globular shape, both above and beneath, its deeper umbilical pit, and by having no semblance of contortion of the columella. Hex cryproportica. Testa parva, orbiculari-depressa, ad apicem acuta, tenuis, pellucida, nitida, luteo-virescens, leviter striata: infra rotundata, imperforata, fovea parva centrali: spira anfr. 5} convexiusculis, ultimo carinato; suturé impressa, mar- ginata: apertura lunata, labro simplici; columella superné valdé intorta, sinum angustum centralem formante. Very similar to H. subrutila, Mighels, but is distinguished from it by the want of revolving striz, and by the manner in which the columella joins the whorl above. Hexix cutrrata. ‘T. parva, orbicularis, depressa, glaber- rima, lucida, fusco-viridis, infra rotundata, in foveam umbilica- lem devexa, imperforata: spira anfr. 5 convexis, ultimo superné carinato ; apice obtuso; suturaé marginata : apertura angusta, lu- nata, labro simplici ; columella obliqua, callosa, alba, planulata, inflexd, inferné dentem simulante. Lat. 25, alt. 75 poll. Hab. Taheiti and Eimeo. A beautiful, smooth, lenticular, dark-green shell, not unlike H. interna, Say, distinguished by its curious broad, white, inflected, columellar lip. HEuix PERTENUIS. Testa minuta, subglobosa, pellucida, nitidis- sima, viridi-auréa, imperforata: spira depressa, anfr. 44 con- vexis, ultimo amplo, ad peripheriam angulato, infra sulcis remotis radiato: apertura ampla, lunata; labro simplici. Lat. 4, alt. zo poll. Hab. Aurora Island. 21 , A small, very pellucid shell, somewhat like H. electrina and lucida, but more globular. Hetix crapata. ‘Testa parva, planorboidea, tenuis, nitida, rufo-viridis, luteo radiatim variegata, supra depressa, infra aceta- buliformis: spira anfr. 5 convexis, intra umbilicum angulatis, obliqué et confertim striatis et cum striis interruptis volventibus decussatis ; ultimo subangulato, versus aperturam deflexo ; sutura canaliculata : apertura ‘on subcircularis ; labro acuto, ad um- bilicum reflexo. Lat. +, alt. 4 poll. Hab. Tongataboo. Shape and size of H. sionhallias Anthony, but has the umbili- cus broader, deeper, and more shelving. Hex Fornicata. Testa parva, planorboidea, tenuis, dilute rufa, supra convexiuscula, infra concava, obliqué ordinatim et confertim costato-striata: spira anfr. 4 convexis ; ultimo ad peri- pheriam rotundato; sutura profunda: apertura transversa, rotun- dato-elliptica. Lat. 3, alt. j45 poll. Had. Kauai, Sandwich Is- lands. A small, dome-shaped shell, marked like H. siriatella, but more like H. indentata, in the form of the spire. Heuix rupicinosa. T. orbicularis, depressa, ferrugineo-cornea, fusco tessellata, obliqué costato-striata, laté umbilicata; spira anfr. 6 arcté volutis; sutura impressa: apertura subrecta, lunata ; labro simplici; lamella unica secundum anfractum penultimum volvente. Lat. =, alt. 8, poll. Hab. Kauai, Sandwich Islands. Larger than the other checkered shells of this group ; like H. striatella, Anthony, in form, size and sculpture, or like H. radi- ata, Mull., as to coloring. HeELIx D#DALEA. ‘Testa parva, discoidea, rubro-castanea, fusco tessellata, costellis radiantibus acutis confertis scabra, sub- tus acetabuliformis: spira anfr. ad 6 arcté volutis, duplo altiori- bus quam latis, ad peripheriam rotundatis, infra haud planulatis : Sutura impressa: apertura angusta, verticalis, lunata; fauce lamellis 9 volventibus instructa, quorum 4 ad anfractum penulti- mum, uno ad columellam, 2 ad basim, 3 ad labium dispositis. Alt. 35, lat. 7; poll. Had. Taheiti, Matea. Size and color of H. contorta, Fer.; but the whorls are more numerous and compact, and there are twice as many lamelle on the penult whorl. ‘The umbilicus is similar in form to that of the 22 young HH. bursatella, only the whorls remain rounded instead of being flattened. Hexix osouus. ‘T. parva, discoidea, deorsum compressa, su- pra planulata, infra concava, radiatim minutissimé et inequaliter siriata, fusco-ferruginea, piceo tessellata: spira anfr. 53 supra excavatis, ultimo superné costato-carinato: apertura sub-rhom- boidea ; fauce lamella unica secundum anfractum penultimum volvente. Lat. 4, alt. , poll. Had. Taheiti. A most singular discoidal shell, resembling Planorbis vortex. Heix BURSATELLA. ‘Testa parva, per-variabilis, rotundata, conica vel planulata, supra maculis fuscis et albidis alternanti- bus flexuosis, tessellata, infra cinereo-albida vel flammulis fuscis flexuosis radiata, costis numerosissimis acutis radiantibus lyrata : subtus convexiuscula, interdum simplex, interdum concentricé striata, nunc radiatim costellata, nunc albida, nunc fusco flammu- lata: spira anfr. ad 8 externé excavatis, ultimo carinato ; sutura impressa, plerumque marginataé: apertura parva, transversa ; fauce cum lamellis 7 volventibus, quorum 2 superiores, 1 colum- ellaris, 4 remotis (1 supra, 3 infra carinam) ad labium ; labro simplici; umbilico cavernoso, in junioribus acetabuliformi, in majoribus ad januam parvo, constricto, margine acuto, una cum Jabio continuo. Had. Taheiti and Eimeo. The above characters are found combined in every possible manner. ‘The variations in size, color, solidity, and umbilicus, may all be reasonably ascribed to differences in age, food, and per- haps to the elevation, between 2000 and 5000 feet, at which they were collected. ‘The armature of the mouth and the peculiar umbilicus, at first broad, and at maturity contracted, or pursed up, so that the flattened edges of the whorls form a large spheri- cal cavity, are the characteristic marks. Two principal varieties may be noticed. «, Large, elevated, conical specimens, which are without mot- tling, rib-like strize, or revolving lines beneath. Liat. 4%, alt. 35 poll. 6. Smaller, depressed specimens, more or less coarsely ribbed, striated and mottled, both above and beneath. Lat. 4, alt. .5 poll. Heuix tumutus. ‘Testa parva, solida, flavida, orbiculato-pyra- midata, basi sub-planulata, umbilico modico perforata: spira 23 elevata, conico-rotundata ; anfr. 6-7 convexiusculis, striis perob- liquis exaratis, ultimo obtusé ad peripheriam angulato, prope aperturam compresso: apertura parva, transversa, lunata ; pe- ristomate simplici. Long. 2, alt. 345 poll. Hab. Feejee Is- lands. This bears a general resemblance to H. pyramidata; but with the same diameter, it is less elevated, and more rounded at apex. Hex TENToRI0otuM. Testa parva, elevata, trochiformis, ad apicem rotundata, pallidé virescens, obliqué et concinné striata, basi in umbilicum mediocrem devexa: spira anfr. 6 planulatis, et carina acutissima, alba, cinctis: apertura subtriangularis, basi rotundata ; labro simplici, ante umbilicum reflexo, Lat. 2, alt. #5 poll. Hab. Upolu. Its elevated form and rounded summit, resembling a nipple, is very remarkable. Hetrx (cARACOLLA) TRoILUS. ‘Testa variabilis, depresso-conica, sub-discoidea, leviter et obtusé striata, flavescens, subtus convexa, in umbilicum amplum incurvata, carinata ; carina utroque linea spirali castanea marginata: interdum coloribus inversis: spira anfr. 53 rotundatis: apertura semilunaris, superné angulata ; labro acuto. Lat. 3, alt. ;4, poll. Hab. Samoa Islands. Is somewhat like H. ewplanata, Quoy, but much smaller and more umbilicated, and differently colored. Not unlike H. alpina in form. Some specimens are much elevated ; others have the chestnut color with a yellow line; and one has the two bands coalescing and covering the whole periphery. Hexrx cressipa. Testa variabilis, solida, depressa, lenticu- Jaris, acute carinata, nitida, densé et acuteé striata, coloribus flavo- viridibus et castaneis coalescentibus fasciata, infra sub-planulata, umbilico magno et profundo perforata: spira anfr. 5 vix con- vexis : apertura triangularis ; labro acuto; fauce lilacina. Lat. qo alt. 4 poll. Hab. Samoa and Taheiti. In some respects similar to H. Troilus, but more lenticular, flatter beneath, the colors are differently disposed, and the surface sculptured with more numerous and much sharper lines. The animal is also different in coloring. Shape very much like H. acies, Fer. but flatter beneath and smaller. 24 Hextx evrypice. Testa tenuis, depresso-pyramidata, acutis- simé carinata, pallidé virens, linea castanea volvente supra et infra picta, subtus planulata, umbilico lato et profundo perforata : spira anfr. 5-6 vix convexis, apice rotundato: apertura trans- versa, acuté triangularis; labro acuto. Lat. 33, alt. 4} poll. Hab. Tongataboo. Approaches H. Cressida, but is much thinner, nearly trans- parent, of a much smoother texture at surface, flatter beneath, and the coloring seems to be very uniform. The color of the animal is also different. Its shape is almost precisely that of H. elegans, though much larger. It is also like H. planorboides, Lesson, (H. solarium, Quoy), which is very much smaller and destitute of fillets. Heix susritissima. T. minuta, fragilissima, nitidissima, lenticularis, plano-convexa, imperforata: spira planulata, anfr. 5 planis, arcté volutis ; ullime acutissimé carinato: apertura (fracta). Lat. 3, alt. Js poll. Hab. Maui, Sandwich Islands. This little pellucid shell, though imperfect, is so well marked by its compressed lenticular form, sharp carination and numerous whorls, that I venture to pronounce it a new species. Henix (Nanina) scorPio. Testa rotundata, depressa, rubro- castanea, fasciis radiantibus atro-purpureis tessellata, subtus haud convexa: spira depressa, anfr. 44 convexis. Lat. 2, alt. 2 poll. Hab. Feejee Islands. The above characters were drawn from the figure of a shell which looks somewhat like Cyclostoma tigrinum. Its inhabitant is most peculiar; having, besides the usual anal lappet of Nanina covering the mucus pore, six other smaller ones between this and the shell, arranged in a double series along the back. Hetrx (Nanina) rua. Testa fragilis, obconica, oblique striata, epidermide tenui subconcentricé et confertissimé rugosa induta, coloribus sordidé viridibus marmorata, subtus valdé con- vexa, perforata: spira anfr. 44 planulatis, ultimo superné angu- lato: apertura lunata; labro acuto ad umbilicum reflexo. Lat. 1, alt. 2 poll. Hab. Feejee Islands. The specimens collected appear to be immature, but the pe- culiar minute wrinkling of the epidermis, somewhat like that on Planorbis albus and hirsutus, may serve to characterize it. 25 Heix (Nanina) rrrapiata. T. conico-globosa, tenuis, im- perforata, albida, supra purpureo radiatim tessellata, lineis incre- menti acutis confertim striata, subtus rotundata: spira anfr. 6 convexis, ultimo sub-angulato: apertura transversa, lunata; labro acuto, ad columellam incurvato, vix reflexo. Liat. 4, alt. 2 poll. Hab. New Holland. } A singularly-colored Helix, in shape more like H. Cubensis than any other which I recollect. The colors are arranged some- what like those on Bulimus vewillum. Hexix (NanrNa) RuBRicATA. ‘Testa globoso-conica, solida, vix perforata, supra nitida, rufo-castanea, striis radiantibus gregatim dispositis et striis volventibus decussata, infra glaberrima, livido- castanea, ad centrum declivis: spira anfr. 6 convexis, amplis; sutura submarginata : apertura semilunaris; fauce livida ; labro simplici, ad columellam reflexo, albo. Liat. 1, alt. 2 poll. Hab. Lebouka, Feejee Islands. In shape and size like H. zaleta and H. irregularis ; but in all other respects it is like H. velutina, Sowb., to which it is very closely allied. Perhaps it is H. Nouleti, Le Guillou. Heix turipa. Testa globoso-conica, depressa, glaberrima, nitida, livido-castanea, infra pallescens, ad umbilicum minutum declivis: spira anfr. 6 convexis, radiatim et obtusé striatis, ultimo prope aperturam subangulato ; sutura impressd, marginata : aper- tura lunata, fauce livida ; labro acuto, ad umbilicum reflexo, albo. Lat. 1, alt. 4 poll. Hab. Feejee Islands. Groups with the preceding species to which it is very similar, but differs essentially in the want of revolving striz, its carinated periphery, and light-colored umbilical region. It probably be- longs to Nanrna. Hewix catva. Testa tenuis, depresso-globosa, nitida, pallidé stramineo-virescens, arcté umbilicata: spira anfr. 5 haud turgidis, striis incrementi obsoletis; sutura haud impressa, marginata : apertura semilunaris ; labro simplici, acuto, ad umbilicum paulum reflexo. Lat. 4, alt. + poll. Hab. Feejee Islands. Similar to the preceding, but smaller and lighter-colored, and is plainly distinguished by its smooth, shining, rounded spire, similar to the summit of H. Moricandi or H. lychnuchus. This must also be a Nanina. 4 26 Vitrina Ruivensis (Cournovy MS.) Testa haliotiformis, transversé subquadrata, depressa, papyracea, pellucida, nitida, chlorata, gradibus etatis striata: spira vix conspicua, anfr. uno rapide crescente ; apice laterali: apertura faciem inferiorem ade- quans ; labro propé spiram membranaceo ; columella laxé intro spiram volvente et eam penitus exhibente. Lat. 23, alt. 45 poll. Hab. Madeira, near the summit of Pico de Ruivo, 6210 feet al- titude. A very large and well-marked species. Virrina niTIpA. ‘Testa depresso-globosa, heliciformis, tenu- issima, pellucida, nitidissima, levigata, succineo-viridis, imperfo- rata: spira anfr. 4 convexis, ultimo amplo; apice subcentrali, prominente ; sutura excavata : apertura transversa, subcircula- ris; peristomate inflexo ; columella arcuata, usque ad apicem perspicua. Diam. 4%, alt. 5 poll. Hab. Madeira, Roche de Empena, 4240 feet elevation. A most elegant and _ brilliant species. VITRINA CAPERATA. ‘Testa helicoidea, depresso-globosa, ad peripheriam obtuse angulata, tenuis, sub-opaca, striis incremen- talibus conspicuis et rugis obliquis ramulosis, preecipué supernis, exarata, diluté fulvo-cornea, arcté perforata: spira anfractibus 31 convexis, cito crescentibus ; sutura profunda ; apice subcen- trali: apertura sub-circularis; labro simplici, ad umbilicum everso; columella, callum simulante, secundum spiram intro- eunte. Diam. max. 3%, alt. + poll. Hab. Kauai, Sandwich Islands. A large and substantial species, easily distinguished by the branching wrinkles of the surface, which perhaps answer to blood-vessels. Virrina mArcIDA. Testa sigaretiformis, tenuis, sub-opaca, flavo-viridis, depresso-orbicularis, tenuiter striata, sub-perforata : spira anfr. ad 3, convexiusculis, ultimo amplo, declivo; apice sub-centrali ; sutura bene impressa: apertura transversa, ellip- oF tica; labro plerumque membranaceo. Diam. 2%, alt. 75 poll. Hab. Madeira, Roche de Empena ; height of 4200 feet. Differs from V. Lamarckii, especially in having more whorls. The animal is still more decidedly different. VITRINA TENELLA. ‘Testa parva, V. pedlucide simillima, suc- cinea, sub-perforata, gradibus e#tatis conspicuis striata: spira 27 ; rotundata, apice subcentrali, anfr. 3, convexis, declinantibus ; su- tura excavata : apertura sub-circularis ; labro antrorsum arcuata. Diam. 4, alt. =; poll. Hab. Kauai, Sandwich Islands. It is larger than V. pellucida, more opaque, and the aperture is larger. Virrina Rogusta. ‘Testa helicoidea, transversa, depresso-glo- bosa, sub-valida, polita, perlucida, diluté flavo-viridis, lineis in- crementalibus regularibus, obtusis, striata: spira obtusa, anfr. 3, ultimo magno ; apice subcentrali ; subtus rotundata: apertura rotundata; margine sinistro superné reflexo, rimam umbilica- lem parvum formante. Diam. max. 3, alt. + poll. Hab. New South Wales. This is about the size and form of V. nigra, Quoy, and is almost exactly like V. Freycineti, Fer. It is more globose and brilliant than V. marcida, and seems to be built more firmly than any other species. SuccrnEA RoTUNDATA. ‘Testa parva, tenera, sub-opaca, hemi- spherica, flavo-virens, concinné striata: spira feré nulla, intus aperta, anfr. 21, ultimo amplissimo : apertura circularis, posticé angulata, testam feré adequans; margine columellari obliquo, subrecto, conspicué plicato, et callo lato induto. Long. 345, lat. 34, alt. 3; poll. Had. Mountains of Oahu, Sandwich Islands. This, with the two following species, are remarkable for their hemispherical form and large apertures, with the animal much too large for the shell, and belong to Helicolimax, Fer. Resem- bles 8S. aperta, Lea. SuccinEA cCEPULLA. ‘Testa parva, tenuissima, pellucida, nitida, succineo-virens, rotundato-elliptica, depressa, sinistrorsum rotun- data, dextrorsum declivis, longitudinaliter striata et liris inequali- bus volventibus arata: spira feré nulla, anfr. 23: apertura am- plissima, ovalis, ad basim laté rotundata, ad columellam arcuata, leviter plicata ; intus metallica. Long. 4, lat. 2%, alt. $ poll. Hab. Hawaii. Depressed and without spire like the preceding, but is larger, more transparent, less spherical, has spiral furrows, and the aperture is peculiarly widened posteriorly by an outward sweep of the lip. 28 SuccINEA PUTAMEN. ‘Testa magna, depressa, globoso-elliptica, tenuis, leevis, striis incrementalibus et striis volyentibus tenuiter decussata, fulvo-cornea, ad peripheriam sub-angulata : spira feré nulla, anfr. vix 2: sutura linearis: apertura paginam inferiorem feré adequans, rotundato-ovalis ; margine columellari sub-plicato. Long. §, lat. 2 poll. Hab. Upolu. A remarkable shell, resembling the half of a bird’s egg. Dis- tinguished from 8. rotundata by its larger size, revolving strie, and angular periphery. SuccinEA vesicatis. Testa tenuissima, fragilis, lucida, laté ovata, depressa, gradibus etatis undulata, epidermide straminea induta : spira anfr. 3, ultimo magno, patulo, alteris spiram par- vam formantibus: apertura subovalis, ad basim laté rotundata, longitudinis 4 equans ; plicé columellari conspicua. Long. +, lat. 3; alt. 2 poll. Hab. Mauna Kea, Hawaii. About the shape and size of S. rubescens. A delicate, very ample species. SuccINEA LUMBALIs. Testa mediocris, ovato-conica, tenuis- sima, sublucida, pallidé virens, leviter striata, subtus gibbosa : spira acuté conica; anfr. 3 convexiusculis, ultimo ventricoso, versus suturam declivi: apertura rotundato-ovata ; columella valdé arcuata, callo induta; plica mediocri. Long. 3%, lat. 5, alt. 45 poll. Hab. Kauai, Sandwich Islands. Its dull aspect, conical spire and ventricose form are its dis- | tinctive marks. It resembles small specimens of Limnea catas- copium, Say. SuccinEA HUMEROsA. ‘Testa ovata, depressa, sub-rhombea, sublucida, striis incrementalibus rugosa, sulcis raris volventibus - interdum arata, diluté virens, et interdum rubricans: spira anfr. 3, ultimo permagno, posticé sub-angulato: apertura sub-ovalis, posticé amplificata ; labro dextrorsum decurrente ; plica columel- lari conspicud. Long. 3, lat. 2, alt. + poll. Hab. Mountains of Taheiti. About the size of S. amphibia, and has a_ peculiarly broad aperture on account of the outward sweep of the posterior por- tion of the lip, and may be known by the angular shoulder on the last whorl. 29 Succinea crocaTa. ‘Testa pinguis, sub-solida, sub-opaca, ovato-globosa, saturaté crocea, lineis incrementi exilibus et in- terdum lineis inordinatis volventibus striata: spira brevis, acuta, anfr. vix 3, convexis, sutura profundissima discretis, ultimo ven- tricoso: apertura magna, rotundata-ovata; columella carinata sub-incrassata, haud sinuoso: intus calcarea. Long. §, lat. $ poll. Hab. Upolu. May be easily known by its large size, inflated form, and its peculiar color. ‘The spire is remarkably contorted. SuCcCINEA CANELLA. ‘Testa parva, sub-solida, opaca, ovata, impolita, cinnamomea, leviter.striata: spira conspicua ; anfr. 3, ventricosis, sutura valdé constricté discretis: apertura parva, ovato-rotunda ; peristomate incrassato, postice sub-continuo ; columella arcuata, haud plicata. Long. 4, lat. 2 poll. Had. Maui, Sandwich Islands. Very much like 8. avara, Say, and S. caduca, Mighels ; but it is less elongated, more solid, and without a columellar fold. SuccinEA Macetianica. ‘Testa parva, tenuis, subflexilis, luci- da, nitida, intensé virens, rotundato-ovata: spira brevis, acuta, anfr. 3, sutura profunda discretis, ultimo amplo, ventricoso : apertura ovata; margine columellari reflexiusculo, callo tenui superné munito. Long. 4, lat. 3, poll. Hab. Terra del Fuego. A small, remarkably short and ventricose species, conspicuous also for its deep grass-green color. SuccINEA MANUANA. ‘Testa parva, ovata, ventricosa, tenuis, sub-opaca, straminea, longitudinaliter striata et transversé sparsim rugosa : spira obtusa, exserta, anfr. 24, ventricosis, sutura pro- funda discretis: apertura ovato-rotundata, peristomate ad colu- mellam minimé reflexo; regione umbilicali depressa, sinuosa. Long. 4, lat. 4, poll. Had. Manua. A small, plump species, resembling S. Magellanica, but still more ventricose, and is further distinguished by its pale color and opacity. SuccINEA MopEsTa. Testa mediocris, ovata, tenuis, nitens, diaphana, stramineo-cornea, tenuiter striata, et lineis interruptis volventibus arata, subtus ventricosa: spira reflexa, anfr. 3, ven- 30 tricosis : apertura rotundato-ovata ; columella arcuata incrassata, sub-perforata ; plica conspicua. Long. 4, lat. 2 poll. Hab. Upolu. Like a small 8. campestris, Say. Differs from the next species by its shorter spire, pale greenish color, and more arcuated co- lumella. SuccinEA VENuSTA. Testa mediocris, ovata, tenuis, pellucida, nitida, ordinatim striata, epidermide succinea, interdum vires- cente induta, subtus gibbosa: spira conspicua, obtusiuscula, anfr. 23 rotundatis : apertura ovata, longitudinis teste duos trientes adequans, posticé angulata; columella obliqua, absque plica. Long. 7%, lat. 4, alt. 4 poll. Had. Hawaii. Almost exactly like 8. ovalis, Say, but is a little more corpulent. It is less elongated than S. pudorina, more shining and different- ly colored. SuccINEA PuDoRINA. Testa elongata, ovato-turrita, tenuis, lucida, striis conspicuis longitudinalibus notata, succineo-rubes- cens: spira elevata, anfr. 3 cylindraceis valdé obliquis et sutura profunda discretis composita. Apertura teste trientes duos ade- quans, elongato-ovata, angusta : columella obliqua, sub-recta, vix plicata. Long. 3, lat. 3%, alt. 4 poll. Hab. Mountains of Ta- heiti and Eimeo. Very much like 8. oblonga, Drap. It is more slender, the aperture narrower, and the penult whorl nearly twice as long. SUCCINEA INFUNDIBULIFORMIs. ‘Testa acuto-conica, infundi- buliformis, ad basim perobliqué truncata, concinneé striata, opaca, viridis: spira obtusa, anfr. 24 planulatis, ultimo magno ; sutura lineari: apertura rotundato-ovata; margine sinistro inflexo, ad peripheriam carinato. Long. 7%, lat. 35 poll. Hab. Mountains of Taheiti and Eimeo. A most remarkable tunnel-shaped species, resembling pre- cisely the sugar-cockles of the confectioners. It is allied to S. procera, which has all the outlines a little convex, an amber co- lor, and no inflection of the columellar margin. SUCCINEA PROCERA. ‘Testa magna, elongata, lanceolata, fulvo- cornea, striis incrementalibus crassis rugosa : spira acuta, anfr. 3 . . . . . . . . ‘ perobliquis convexiusculis composita, partem longitudinis fere 31 dimidiam sequans: apertura ovato-oblongata ; labro posticé de- currente ; columella arcuata, sub-incrassaté. Long. 7, lat. 35 poll. Hab. Kimeo. A large, remarkably slender species, of coarse exterior, allied to S. infundibuliformis, and much resembling Limnea umbrosa in form. SuccinEA rusTicANA. Testa elongata, ovato-conica, tenuis, pallidé virens, impolita, lineis incrementalibus inequalibus et cras- sis striata, subtus convexa: spira acuta, anfr. 8 convexiusculis : apertura ovata, quadrantes tres longitudinis adequans ; columella arcuata, perspicué plicata. Long. 4, lat. } poll. Hab. Oregon. Butimus ELopatus. ‘Testa solidula, elongato-ovata, longitu- dinaliter plicoso-striata et lineolis volventibus interruptis corrosa, epidermide sordidé luteo et viridi marmorata induta, arcté um- bilicata: spira anfr. 5 convexis, ultimo magno: apertura angus- ta, sub-elliptica ; labro simplici, obtuso, aurantio; plica columel- lari perobliqua. Long. 24, lat. 12 poll. Hab. Feejee Islands. Belongs to the same group as B. fulguratus and B. malleatus, characterized by the large fold on the columella. It is the largest of the three, resembling the former in its sculpture and the coloring of the aperture, and the latter in coloring. It is distinguished by its unreflected lip, its narrow aperture, less con- spicuous and more oblique columellar fold, more ventricose and less oblique whorls. Butimus morosus. ‘Testa crassa, rudis, ovata, albido-cinerea, longitudinaliter striata, arcté umbilicata; spira anfr. 5 convexis: apertura subauriculata; peristomate latissimé revoluto, albo, posticé angulato ; plica columellari ampla.Long. 14, lat. 1 poll. Hab. Feejee Islands. Of the same group as the preceding, but is smaller, more solid and less elegant than its associates. Its want of epidermis and colors, its angular outline and very broad, revolute lip, character- ize it. Buimus protatus. Testa ovoidea, antrorsum angustata, leviter striata, albido-cinerea, fasciis quatuor liturarum ferrugine- arum cincta : spira ovato-conica ; anfr. 5 convexiusculis : apertu- ra elliptica, totius longitudinis dimidium adequans; labro sim- i) 2 e \ plici, acuto: columella brevis, laté reflexa, alba, umbilicum parvum tegens. Long. 13, lat. 1 poll. Hab. Santiago, Chili. A shell of a remarkably regular, elongated ovoid form, some- what like B. Favannii, only more narrowed anteriorly, and dis- tinguished by its four bands of rusty blotches. Buuimus ciniatus. Testa tenuis, ovato-conica, viridis, striis volventibus, cilias rigidas nunc longas nunc breviores gerentibus, cincta: spira acuta, anfr. 6 convexis, ultimo magno, ventricoso, sub-angulato: apertura sub-ovata, anticé angustata ; labro sim- plici; columella recta, alba, umbilicum parvum obtegente. Long. 3%; lat. 3% poll. Hab. Organ Mountain, Brazil. This shell, with its thick, dark green epidermis, looks like a Paludina. P. velutino-hispidus of Moricand, another hairy spe- cies, is more globular. Butimus pruninus. Testa ovato-turrita, solida, leviter striata, livido-purpurea, infra suturam et circa umbilicum albido zonata : spira acuta, anfr. 6, convexiusculis, subtabulatis : apertura mo- dica, ovata; labro simplici, intus callo stramineo incrassato, ad columellam reflexo ; fauce livido. Long. 3, lat. 2 poll. Hab. ? This is a solid, elongated, peculiar species, probably belong- ing to South America. Butimus uysripus. ‘Testa crassa, elongato-ovata, polita, cas- tanea, lituris ochraceis admodum oblique ordinatis maculata: spira anfr. 6 convexis, sub lente spiraliter striatis ; ultimo magno sub-compresso, ad basim obliqué carinato et rima umbilicali per- forato: apertura angustata, elongato-elliptica, anticé angulata et canaliculata; labro crasso, laté reflexo, rubro-purpureo ; fauce roseo. Long. 1%, lat. 8 poll. Vicinity of Rio Janeiro. A beautiful shell, intermediate between B. goniostoma and B. multicolor, having the aperture of the former, and the size, form and marking of the latter. Butimus jsunceus. Testa parva, elongato-conica, tenuis, translucida, diluté virens, concinné striata, vix perforata: spira ad apicem obtusa ; anfr. 7, convexiusculis, superné con-tabulatis : apertura elongato-ovata ; labro simplici, ad columellam vix re- flexo. Long. 8, lat. 74 poll. Hab. Society and Sandwich Islands. 33 A delicate, slender shell, varying a good deal in size, and closely allied to, if not the same as B. clavula, Quoy, B. bacteri- onides, D’Orb., and B. octonoides, Adams, from the West Indies. Perhaps it is a species attached to the plantain, cocoa-nut, or some other wide-spread tropical plant. PartuLa conica. ‘Testa elongato-conica, interdum sinistrorsa, flavida vel castanea, leviter striata et lineis crebris volventibus decussata, laté perforata : spira elevata, acuta, anfr. 6 ventricosis, ultimo permagno; sutura impressa, albidd: apertura obliqua, ovalis ; peristomate albo vel rosaceo, laté reflexo, sub-planulato. Long. 154, lat. 34 poll. Hab. Samoa Islands, Raraka Island. Larger than any species hitherto described, and resembling Bulimus levus in form. It may possibly be P. bulimoides, Lesson. PaRTULA ZEBRINA. ‘Testa variabilis, ovata, tenuis, alba, flava vel fulva, plerumque strigis longitudinalibus flexuosis albis varie- gata, spiraliter tenuistriata, umbilico rimato perforata : spira anfr. ad 5 rotundatis, ultimo ventricoso: apertura elliptica, peristomate albo, laté reflexo, planulato; plica columellari magna. Long. 85, lat. 3 poll. Hab. Tutuilla, Samoa Islands. A rather large and very fine species, more ventricose than others, and distinguished by its perfectly flattened peristome, as well as by its variegated coloring and revolving striz. PaRTULA PUSILLA. ‘Testa parva, elongata, conica, polita, albi- do-cornea, perforata: spira acuta, anfr. 6 convexis, superné tabulatis: apertura sub-quadrata, posticé lamella intro-volvente instructa ; peristomate reflexo, dextrorsum sinuato. Long. .3,, lat. 8, poll. Hab. Matea Island, under stones. This little species bears all the characters of the group, and is by far the most minute species yet described. Pura (Vertigo) TanTILLA. ‘Testa minima, sub-ovalis, albida, perforata: spira obtusa ; anfr. 4 convexiusculis, supernis sub- clathratis, ultimo exiliter rugoso-granulato: apertura sub-rotun- da, peristomate everso; fauce dentibus 5 armato, quorum uno columellari, uno basali, uno labiali et duobus posticis. Long. 74, lat. s'5 poll. Hab. Taheiti, 2000 feet elevation. About the shape and size of P. Gouldii, and with the same 5 o4 number of teeth, but has two of them on the transverse lip, in- stead of on the columella. Pura PEponuM. ‘Testa minuta, variabilis, ovata, plus minusve elongata, tenuis, lucida, nitida, fulvo-cornea, perforata: spira anfr. 6 convexis leviter striatis: apertura ovato-rotundata, pos- ticé lamellam volventem gerens; labro simplici, ad columellam plerumqueé late revoluto ; columella vel nuda vel lamellis trans- versis 1-3 instructa. Long. .3,, lat. 5 poll. Hab. Sandwich Islands ; very abundant on pumpkin vines. This interesting little shell is of somewhat doubtful genus. It may prove to be of the genus Tornatellina or Elasmatina. Its very variable characters render a decision difficult. But it be- longs to the old genus Pupa, where I at present place it. Pura (Megaspira) ELata. Testa sub-cylindrica, elevata, tenuis, nitida, striis conspicuis lirata, cornea, lituris parvis sparsis propé suturam notata, vix perforata: spira obtusa, anfr. 19 angustis sub-planulatis : apertura parva, obliqua, lunata, anticé sub-effusa posticé lamellam volventem gerens ; plica columellari modica, bilamellata. Long. 14, lat. 4 poll. Had. Brazil. Compared with P. e/atior it is smaller, more cylindrical, more delicately striated, more shining, the whorls more crowded, be- ing as 19 to 16 in the same space, the columella smaller and with one fold less, the lip effuse and the umbilicus much smaller. BaLEA PEREGRINA. ‘Testa parva, sinistrorsa, elongata, sub-fu- siformis, solida, opaca, rufo-cinerea, vix striata, perforata: spira ad apicem mamillata; anfr. 8, planulatis, sub-tabulatis ; sutura lineari, profunda: apertura sub-quadrata; peristomate continuo, eequato, leviter reflexo, Long. 3, lat. 7 poll. Hab. New Zealand. I have referred this shell to the genus Balea with much hesi- tation, on account of its locality. It is remarkable for its fusi- form, turreted shape, and for the high walls of its aperture, which rise to a level with the surface of the shell. AcHATINELLA MARMORATA. ‘Testa oblongo-ovata, coloribus castaneis, cinereis, et albidis marmorata, leviter striata, imperfo- rata: spira acuta, anfr. 6 convexis, superné sub-tabulatis, ultimo magno, ventricoso: apertura ovata; peristomate simplici, mo- 35 dicé evaso; plica columellari alba, compressa, feré transversa, valdé exstante. Long. %, lat. + poll. Hab. Haleakala Moun- tains, Maui, Sandwich Islands. A large ventricose species, readily distinguished by its varie- gated coloring. ACHATINELLA ELLIPSOIDEA. ‘Testa solida, ellipsoidea, levis, epidermide luteo interdum fusco zonato induta: spira anfr. 6, convexiusculis; suturaé impressa: apertura parva, angusta ; peristomate acuto, nigro; plica columellari feré transversa, tenui. Lat. 35, alt. 5 poll. Hab. Maui. Closely allied to A. microstoma, which has a thickened lip, and a more dead, striated surface. ACHATINELLA AcuMINATA. ‘Testa parva, elongata, turrita, lu- cida, glaberrima, nitida, succinea ; spira elevata, anfr. 6 obliquis, convexiusculis, ultimo trientes duo longitudinis equante : aper- tura angusta, sub-elliptica, peristomate albido, incrassato, prorsum arcuato ; columella truncata, sed vix plicata. Long. 38, lat. 3 poll. Hab. Kauai, Sandwich Islands. More elongated, and with more oblique whorls than other spe- cies. In its form, color and clearness, it may be compared with Physa hypnorum. The clear, delicate species like this, with the mere semblance of a columellar fold, may properly constitute a distinct group, to which the name Leptachatina (4e7t0s and Achatina) might be given. ACHATINELLA CEREALIS. ‘Testa parva, elongata, cylindraceo- conica, impolita, cinereo-castanea : spira obtusa, anfr. 7-8 planu- latis, ultimo trientem longitudinis vix superante : apertura parva, lunata, quadrantem longitudinis adequans ; peristomate simplici, intus incrassato ; plica columellari obsoleta, anfractu penultimo callo induto. Long. 2, lat. $ poll. Hab. Waianai, Oahu. In size, form and color it resembles Bulimus hordeaceus, but it is still more slender. AcHATINELLA GUTTULA. ‘Testa parva, tenuis, lucida, rotunda- to-ovata, succinea, interdum castaneo zonata: spira obtusa, anfr. 6 convexiusculis ; ultimo tumido, dimidiam longitudinis superante. Apertura parva, lunata ; peristomate albo, incrassato, 36 ad basim valde truncato; columella curta, plica parva instructa, ad anfractum penultimum callo induta. Long. $, lat. 33; poll. Hab. Maui, Sandwich Islands. One of the smallest, and proportionally the shortest of the group, its length being but little greater than its breadth. It is much more ventricose and less solid than A. accincta, Mighels. Hexicina FuLtcorA. ‘Testa parva, lenticularis, acuté carinata, glabra, diluté castanea, lineolis radiantibus angulato-flexuosis, prope suturam et ad carinam dilatatis, picta: spira depresso- conica, acuta; anfr. 5-6 planatis: apertura lata, semilunaris ; peristomate reflexo, flavido, ad basim rectangulari ; columella recta, callo modico albido induta. Lat. {5, alt. 25 poll. Hab. Islands of Upolu and Manua, among bananas. This species, with H. laciniosa, and H. musiva, belong to the same group with H. flammea, Quoy. These are smaller, and more globular; the first has no reflected lip and the second no radiations beneath. Heticina Musiva. ‘Testa parva, solidula, sub-globosa, polita, rufo-viridis, supra lineolis flexuosis albidis radiata: spira anfr. 4 rotundatis: apertura Junata; peristomate reflexo, albido, ad ba- sim rectangulari; columella recta. Lat. ;3,, alt. = poll. Hab. Islands of Manua and Upolu, among plantains. Closely allied to the preceding, but smaller, more globular, not carinated, and destitute of radiated coloring beneath. HeLicINA TROCHLEA. ‘Testa minuta, trochiformis, supra cine- rea, costis acutis volventibus 3 vel 4 (intervallis concavis, scabro- sis) cincta, infra convexa, polita, citrina : spira anfr. 4, ultimo ad peripheriam bicarinato : apertura sub-trigona ; peristomate leviter reflexo; columella ad basim angulata, callo copioso induta. Lat. 4, alt. 3 poll. Hab. Matea Island. It has the size and nearly the form of H. rupestris, Pfeif., and is distinct from all others by its well-marked, sharp, revolving ribs. Heicina MuLTicotor. ‘Testa parva, solidula, conico-globosa, tenuissimeé striata, citrina, interdum fusco-fasciata, vel omnino fusco-rubra, subtus convexa: spira anfr. 4 convexiusculis, ultimo ad peripheriam rotundato; sutura impressa: apertura lunata, lata; peristomate simplici, acuto, ad basim obtusé angulato ; colu- 37 mella expansa, callo copioso induta. Lat. 53;, alt. 5 poll. Had. Tongataboo. A very delicate species, and one of the smallest known, and principally remarkable for its variable coloring. HEticina userta. Testa parva, solida, sub-globosa, levis, diluté citrina ; spira anfr. 4; sutura impressd: apertura parva, semilunaris, extrinsecus constricta; peristomate simplici, vix reflexo ; columella callo flavo copiosissimo, haud appresso, in- duta. Lat. 7%, alt. 335 poll. Hab. Maui, and Oahu Mountains. Very remarkable for the abundant golden yellow callus which forms a tongue-like projection across the base of the shell. HELIcINA BERYLLINA. Testa solidula, depresso-conica, infra convexa, ad peripheriam obtusé angulata, polita, albido-virens : spira anfr. 5 planulatis, ultimo cito crescente ; sutura lineari: apertura magna, transversé semi-elliptica ; peristomate simplici ; callo columellari laté expanso. Liat. 4, alt. 3 poll. Had. Feejee Islands. Rather large as to size, and remarkable for its delicate beryl- green tint and polished surface. The outer whorl enlarges very rapidly. In form it resembles H. similis, Sowb. HEticina PALLIDA. Testa lenticularis, solidiuscula, luteo-ci- nerea, inequaliter striata, epidermide tenuissima induta: spira depressa; anfr. 5 acute carinatis, planatis : apertura semilunaris, ad columellam callosa ; labro modicé reflexo. Lat. 5,, alt. 53, poll. Hab. Feejee Islands. Resembles somewhat H. miniata, Lesson, which is more solid, polished, lip simple, suture double. In shape and color it is like H. oxystoma, Gray, but is smaller, and the lip not angular at the carina. CycLtosroma TIARA. ‘Testa solida, turbinata, rudis, distorta, sordidé alba, laté umbilicata: spira anfr. 5 laxis, rotundatis, spiraliter liratis, supernis undulatis; inter liros lineis incremen- talibus conferté clathratis: apertura circularis, peristomate sim- plici. Lat. 8, alt. t poll. Hab. Upolu. This rather large species stands at the head of a group of rude and very variable species from the Pacific Islands. They have a bony structure, are coarsely indented, and grooved spirally, often have the whorls nearly disjoined, and the umbilicus so large as to approximate to Solarium. 38 CycLostoma stricatuM. ‘Testa solida, orbiculato-conica, pal- lidé beryllina, supra costulis cingulata, infra sub-planulata, um- bilico amplo et carina acuté impendente limitato perforata : spira anfr, 5 convexis, sutura bené discretis, ultimo propé aper- turam despecto, feré disjuncto: apertura circularis ; peristomate simplici, everso, acuto. Lat. 5%, alt. <3, poll. Hab. Upolu. Not half so large as the preceding, and may be known by its uniform fluting, its sub-globose form, its plain, flattened base, and ample tunnel-shaped umbilicus, margined by an overhang- ing carina. CycLostoma PLIcATuM. ‘Testa parva, solida, rudis, pyrami- data, cinereo-virens, plicis confertis obliquis rugata, et striis minutis volventibus cincta: spira acuta, anfr. 6 rotundatis et sutura bene discretis, ultimo ad peripheriam rotundato ; infra convexa et umbilico modico acuté marginato perforata: apertu- ra circularis ; peritremate simplici. Lat. 2, alt. 2 poll. Hab. Upolu. Differs from the preceding in its more elevated, acutely coni- cal form, its plaited whorls without prominent revolving lines, its rounded periphery and base, and its more contracted umbili- cus. The young are discoidal, without folds, but with somewhat nodular spiral lines and bright beryl-green color. CycLosToMA OBLIGATUM. ‘Testa parva, crassa, sub-globosa, cinerea, arcté perforata, utrinque sulcis et costulis acutis sub- crenulatis equalibus cincta, et lineis incrementi subtilissimis striata: spira acuta, anfr. 5 rotundatis: apertura parva, ovata ; peristomate simplici, crasso, Lat. 385, alt. 3 poll. Hab. Matea. Still smaller than C. rugatum, and remarkable for its solid structure, its coarse alternate ridges and grooves, and its small ovate aperture. It looks not unlike some specimens of Littorina rudis. CycLostoma piaTRETUM. ‘Testa planorboidea, albido-cornea, supra costis distantibus, ad intervallos cincinné clathratis, angu- lata, laté umbilicata : spira planulata, anfr. 4 cylindraceis, rapi- dé crescentibus, propé suturam decliventibus: apertura circu- laris; peristomate simplici. Lat. 2, alt. 4 poll. Hab. Sandal- wood Bay, Feejee Islands. Answers very nearly to the description of C. orbella, Lk. The 39 whorls increase more rapidly, the coste are more distant above, and the umbilicus is less broad and open. CycLostoMA RosEUM. ‘Testa parva, solida, elevato-conica, glabra, pallidé rosea: spira acuta, anfr. 6 convexiusculis, supra arcté tabulatis; suturaé bené impressa: apertura spiram haud equans, ovata ; peristomate eversa, acuta ; fissura umbilicali costa circumambiente finita. Lat.4, alt. 5% poll. Hab. Feejee Islands. This shell, with several others from the Pacific Islands, forms a group characterized by their slender, elevated form, and the rib which circumscribes the umbilical region. It is more deeply and uniformly colored than C. rubens, Quoy, which is also smaller, thinner, and has a much larger umbilicus. CycLoSTOMA TEREBRALE. ‘Testa parva, turrita, acuminata, flavida vel dilute cornea, laevigata, umbilico rimato circumvallato perforata: spira elevata, acuta, anfr. 6-8 convexiusculis, anticé sub-angulatis, sese partim obtegentibus ; sutura impressa ; aper- tura sub-rotunda, posticé angularis, campanulata ; peristomate simplici, anfractui penultimo laté adnato. Lat. 74, alt. 2 poll. Hab. Taheiti and Eimeo. Distinguished from allied species by its acuminated spire, an- gular, imbricated whorls and expanded aperture. It bears a general resemblance to Pupa fallax, Say. CycLostomMa vaLLatum. ‘Testa parva, solida, elongato-conica, lucida, fusco-cornea: spira anfr. 6 convexis, sub-angulatis, ulti- mo costa valida umbilicnm ambiente munito ; sutura profunda : apertura obliqué ovata; peristomate continuo, simplici, campan- ulato. Lat. 4, alt. 4 poll. Hab. Tongataboo. CycLostoma scituLumM. ‘Testa parva, elongato-conica, tenuis, rufo-cornea, striis incrementi tenuibus solum insculpta, arcté umbilicata: spira elevata, anfr. 6-7 rotundatis, supernis sub- angulatis ; suturaé profunda: apertura rotundato-ovata, parva, trientem longitudinis adequans; peristomate simplici, pallido. Long. +, lat. =4 poll. Hab. Taheiti and Eimeo, Manua. Almost exactly like Amnicola Sayana, Anth. It is larger and more ventricose than C. vallatum, and is distinguished from C. terebrale by its less slender form and unexpanded lip. TRUNCATELLA AURANTIA. ‘Testa parva, decollata, conico- cylindracea, aurantia, sub-perforata, longitudinaliter confertim 40 clathrata ; clathris elevatis, rectis, numero ad 40 in singulis an- fractibus: spira anfr. 5 convexis: apertura obliqua, ovata ; peristomate albo, continuo, reflexo. Long. 33;, lat. = poll. Hab. Mangsi Island, Borneo. Its principal characters are its large size, very convex whorls, and very numerous bars. 'T. Caribbeorum, Sowb. is often of the same color, but is more robust, the whorls less convex and the bars less numerous and less elevated. TRUNCATELLA ViTIANA. ‘Testa decollata, conico-cylindracea, solidula, flavido-cinerea ; spira anfr. superstitibus 4-5 planiuscu- lis, costulis subrectis, elevatis, obtusis ad 30 clathratis : apertura obliqua, rotundato-elliptica ; peristomate expanso, continuo, an- fractui penultimo haud adnato, costa marginato que posticé ad suturam producta est; operculum laminatum. Long. 33, lat. qy poll. Had. Feejee Islands. One of the largest species, though it varies greatly in size. It is especially distinguished by the peculiar mode in which the lip forms its junction posteriorly. ‘The bars also become fused posteriorly, so that the intervening flutings do not always reach the suture. It differs from T. aurantia in color, is more solid, and the bars are less numerous. TRUNCATELLA PorRECTA. Testa parva, elongata, sub-cylin- drica, decollata, albida; spira anfr. superstitibus 4 convexis, clathris humilibus acutis ad 16 instructis, ad intervallos minutis- simé et longitudinaliter striatis: apertura rotundato-lunata, an- fractui penultimo laté sejuncta; peristomate continuo, extrorsum expanso: operculum laminis arrectis radiantibus eccentricis ornatum. Lat. 5,, alt. } poll. Hab. Taheiti. The distinguishing marks are, its slender form, unusually convex whorls, and the protrusion of the last whorl. TRUNCATELLA ROsTRATA. Testa parva, conico-cylindracea, nitida, decollata, incarnata, obliqué clathrata ; clathris ad 12 robustis: spira anfr. 5 convexiusculis: apertura parva, obliqué ovata; peristomate continuo, crasso, albido, duplici, reflexo. Lat. 2;, alt. 3% poll. Had. Rio Janeiro. In size and color it is much like T. Cumingiana, Adams, which is still smaller, has only 8 bars, which are whitish, more elevated and acute. ‘The secondary lip gives the base of the shell, when viewed in profile, a rostrated appearance. 4] Ancytus apuNncus. Testa exigua, obliqué conica, viridula, striis radiantibus et striis concentricis decussata; apice acuta, valdé incurvaté: apertura ovato-rotundata. Long. 4, lat. 3,, alt. <4; poll. Hub. Mountain streams, Madeira. Closely resembles A. fluviatilis, and probably still more A. radiatus, Guilding. Domseya FasciaTa. Testa ovata, tenuis, ferrugineo-virens, fusco spiraliter fasciata, creberrimé plicato-striata et lineis vol- ventibus minimis decussata; spira acuta; anfr. 6 ventricosis ; sutura pallida, marginata : apertura semilunaris ; columella alba, plica acuta instructa. Long. #, lat. 3 poll. Hab. River Concon, Chili. Allied to Chilina fluctuosa, D’Orb., but is more regular in form, more ventricose and more solid ; and is noted for its very minute revolving lines, its bands, and its pale suture. DompBeya opovaTa. ‘Testa obovata, solidula, pallidé olivacea, longitudinaliter colore saturatiori fulguratim virgata : spira curta, anfr. 6, convexis, ultimo magno, antrorsum attenuato, posticé sub-angulato : apertura magna, elongato-ovata ; columella alba, sub-recta, bené plicata: interior livescens. Long. {, lat. 4 poll. Hab. Concon River, Chili. In size and marking it is similar to C. major, Gray, but is less broad, and the suture much less impressed. It is much larger and more ventricose posteriorly than C. pulchra, D’Orb., and much less pictured. LimneEa vouutTata. ‘Testa parva, tenuissimé striata, fulva, cy- lindraceo-ovata : spira decollata; anfr. 2-3 superstitibus obliquis, convexiusculis ; sutura modica: apertura ovata, dimidiam teste superans ; columella rufa, valdé sinuata. Long. 33,, lat. } poll. Hab. Oahu. Much smaller than L. Oahuensis, Souleyet, and with less tumid whorls, sloping gently to the suture. ‘The somewhat cylindrical aspect of the shell is peculiar. Limnea tepipa. Testa gracilis, elongata-conica, fragilis, di- luté cornea, striis volventibus remotis et striis incrementalibus undulosis decussata : spira acuminata ; anfr. 5 obliquis, convexi- usculis : apertura magna, semilunaris, expansa ; plica columellari 6 A2 pernotabili, acuta. Long. 3, lat. + poll. Hab. Lake Vancouver, Oregon. Allied to L. pallida, Adams, but is more delicate, more acute- ly pointed, the aperture much larger, the lip expanded, and the surface peculiarly decussated. The whorls are much more ob- lique and less rounded than in L. destdiosa. PLANORBIS OPERCULARIS. ‘Testa parva, valdé depressa, casta- nea, supra planulata; apice depressa: subtus convexa, late umbilicata, ad peripheriam marginata et obtusé carinata ; spira anfr. 4, sutura bené impressa sejunctis ; apertura transversa, sub- rhomboidea. Long. 3, lat. 7 poll. Hab. Rio Sacramento, Upper California. Resembles P. exacutus, Say, but is larger, less compressed and less delicate ; and the periphery instead of being acutely edged, has a blunted keel like P. carinatus. PLANORBIS VERMICULARIS. ‘Testa parva, fornicata: spira plan- ulata, apice depresso, anfr. 4, cylindraceis, ultimo propé aper- turam deflexo: subtus concava; apertura perobliqua, elliptica. Lat. 4, alt. =: poll. Had. Interior of Oregon. About the size and form of P. deflectus, Say, but is less de- pressed, the whorls more cylindrical, and not compressed at the periphery. Puysa TABULATA. ‘Testa ovata, sub-solida, impolita, fuligino- sa; spira anfr. 4-5 ventricosis, superné angulato-carinatis, late tabulatis : apertura elliptica, dimidiam teste Jongitudinis super- ans ; columella albida, vix plicata ; fauce fusco-castaneo. Long. qo» lat. 345 poll. Hab. New Zealand. Not to be mistaken for any other species. It is very much more angular than P. ancillaria, and the keel upon the angle, when closely examined, is found to be minutely crenulated. P. variabilis, Gray, has the lower instead of the upper part of the whorl angular and keeled. Puysa cipposa. ‘Testa obovata, tenuis, glabrata, luteo-cornea : spira acuminata, anfr. 5 rotundatis, ultimo posticé valdé gibboso, anticé attenuato ; apertura angusta, subovalis, trientes duz lon- gitudinis adequans ; columella sinuata, callo induté. Long. 2, lat. 3 poll. Hab. New South Wales. 43 The resemblance to P. ancillaria, in the younger specimens, is very striking ; the older ones are more like P. tabulata, but the last whorl is merely gibbous and not angular. P. Nove Hol- landi@ is somewhat similar, but is much more elongated, and neither angular nor gibbous. Puysa stnuaTa. Testa parva, ovata, cornea, arcuatim striata: spira acuta; anfr. 5 rotundatis posticé sub-angulatis; sutura profunda: apertura obovata, angusta, anticé sub-effusa, posticé emarginata; labro antrorsum arcuato ; columella incrassata, sub- perforata, reflexa. Long. 3, lat. } poll. Hab. Feejee Islands. Remarkable for its thickened inner lip, and for the advancing outer lip and consequent posterior sinus and arched strie of growth, found in no other species except P. gibbosa. PHYSA RETICULATA. Testa tenuis, elongata, ovato-conica, fulva, striis subtilissimis decussata: spira anfr. 4-5 ventricosis ; sutura per-profunda: apertura obovata, dimidiam teste longitudinis vix superans; columella rufa, valdé plicata. Long. 7, lat. 3% poll.; of another, long. 3, lat. 2 poll. Had. Sandwich Islands. Remarkable for its general color, the color of the pillar lip, its decussated surface, and its very tumid whorls. Its form is so much like that of a reversed Limnea, that I am strongly inclined to believe it to be one. Probably the Limnea Oahuensis, Sou- leyet, (Voy. de la Bonite,) is the same; but unfortunately the animal there given is so indefinitely figured as to leave it doubt- ful whether it is really a Limnea or a Physa. Puysa VIRGINEA. Testa elongato-ovata, tenuis, fragilis, lucida, nitida, alba: spira acuta, anfr. 5 convexis, posticé subangulatis : apertura elongata, obovata, posticé acuta; columella leviter pli- cata. Long. 2, lat. 35; poll. Hab. Rio Sacramento, California. The porcelain-like structure and color of the specimens seems not to be merely the effect of bleaching. It is one of the most elongated species, but less slender than P. hypnorum and more like P. gyrina or P. rivalis in form, but is a far more delicate shell. Puysa VENUSTULA. Testa parva, ovata, pellucida, nitida, di- luté cornea: spira elevata, anfr. 5 ventricosis, posticé subangu- latis: apertura ovata; columella valida, albida, valdé sinuata. Long. 3%, lat. 33; poll. Hab. Lima. 44 Closely resembles small specimens of P. heterostropha, though in size and texture it is like P. fontinalis, which has a much shorter spire. Metania Cyzete. ‘Testa ovata, turrita, crassa, fuliginosa, epi- dermide velutino induta; spira ad apicem valdé erosa, anfr. superstit. ad 3 planulatis, superné tabulatis, et pinnis curtis acu- tis arrectis ordinatim dispositis, coronatis: apertura angusta, elongato-ovalis, posticé angulata; intus livida. Long. 1, lat. 3 poll. Hab. Feejees, Navigators, &c. Probably confounded with M. amarula. That shell is lighter colored, shorter, smoother and destitute of the velvety epidermis : the spines are less numerous, longer and sharper and stand out somewhat from a vertical position: in this species they resemble mural battlements. Metania TETRICA. Testa oblonga, turrita, ponderosa, fusca, liris paucis cincta: spira truncata, anfr. superstitibus 3-4 convex- iusculis, posticé sub-angulatis et spinis validis acutis 5 ad basim decurrentibus armatis, interdum muticis: sutura profunda : aper- tura arcté elliptica; intus livida. Long. 14, lat. § poll. Hab. Feejee Islands. More slender than the preceding, and with more convex whorls. It has nearly the same form as M. bellicosa, Hinds, but is larger and has fewer spines. It is especially distinguished by its few stout spines directed outwards. ; Metania Terpsicnore. Testa elongato-turrita, solidula, oli- vacea, plagis flexuosis fuscis picta, longitudinaliter creberrimé plicata, et liris elevatis versus basim crescentibus cincta: spira elevata, ad apicem erosa, anfr. 4 posticé subangulatis : apertura angusta, elliptica, teste longitudinis trientem adequans; intus cerulescens. Long. 1, lat. 2 poll. Hab. Feejee and Samoa Islands. Of the same group as the preceding, but more slender, and remarkable for the lyrate appearance produced by its numerous folds, decussated by revolving lines, one of which, more conspi- cuous than the rest, forms a sort of beaded angle. MELANIA COROLLA. Testa parva, ovato-conica, fusca: spira acuta, anfr. ad 6 ventricosis, posticé constrictis, angulo submedi- 45 ano aculeos numerosos ordinatim radiantes gerente, instructis; sutura haud impressa: apertura rotundata; labiis continuis. Lat. =2;, alt. =2; poll. Hab. Banks’ Peninsula, New Zealand. This beautiful little shell, somewhat resembling M. spinulosa, is readily recognized by its coronets of numerous small radiating prickles on the angles of the whorls. Meant Ltutosa. ‘Testa crassa, elongato-turrita, striis tenui- bus cincta, fusco-castanea, et crusta levi, lutosé, crassa, rubigino- sa, omnino obtecta: spira anfr. 7 superstitibus convexis ; sutura profunda : apertura obovata, vix effusa, peristomate rufo limbato ; fauce livido: operculum crassum, osseum, subspirale. Lat. 4, alt. 12 poll. Hab. Upolu. This simple and graceful shell, resembling in form M. Virgi- nica or M. decollata, is easily distinguished by the dark brown margin of the aperture. It is remarkable for the thick crust of mud with which it is covered, and which is so smooth and brown externally, as to seem like the natural surface of the shell. A glance at the tip reveals its real nature. MELANIA corporosa. Testa subulato-conica, decollata, niti- da, olivaceo-castanea, juxta suturam cerina, striis plerumque mini- mis decussata: spira anfr. ad 5 convexiusculis ; sutura profunda et marginata: apertura angusta, pyriformis, anticé vix producta ; intus livida; columella albida. Long. 14, lat. 3 poll. Hab. Taheiti. Very nearly the same shape as M. Zutosa, but is distinguished by its clean, shining, minutely reticulated surface, its pale sutural re- gion, and its narrower aperture, destitute of the deep brown limbus. MexaniA Scipio. Testa magna, solida, lanceolata, truncata, picea, sursum rufescens et flammulis longitudinalibus fuscis ma- gis ac magis picta (juvenibus valdé subulatis et epidermide tomentoso quoque indutis) creberrimé et minutissimé decussato- Striata: spira anfr. superstitibus 4-5 (integris 12-15) planulatis, obliquis ; sutura impressa et marginaté: apertura triangularis, valdé effusa, posticé sub-canaliculata ; regione columellari tumi- do; colnmella planulata, acuta, alba: intus plumbea. Long. 14, (integer 3) lat. 2 poll. Hab. Samoa and Feejee Islands. About the size and form of M. funiculus, Quoy, but has a longer and more acute aperture. M. aspirans, Hinds, is still 46 larger and more solid, less convex whorls, a darker and less vari- egated surface. Besides its dark pitchy color changing towards the tip to flammulated fawn color covered by a velvety epidermis, it may be known by its minute, close set revolving lines. MezaniA VaInaFA. Testa elongato-conica, levis, badia (ju- nioribus herbaceis et lineolis flexuosis fuscis pictis) : spira deccl- lata, anfr. 4-5 superstitibus, subplanulatis, ultimo plerumque striis distantibus cincto; sutura marginata : apertura ovata, teste qua- drantem zquans. Long. %, lat. 34 poll. Hab. Falls of Vainafa, Upolu. It has the form and general color of small, smooth specimens of M. Virginica, but the whorls are more flattened, and the front of the aperture is more rounded. Metanlia scituLa. Testa gracilis, elongato-conica, decollata, epidermide piceo induta : spira anfr. superstitibus ad 5 valdé con- vexis, supernis longitudinaliter plicatis, infernis spiraliter liratis, preecipué juxta suturam et ad basim: apertura obovata, quadran- tem teste haud zquans, anticé aliquanto producta ; fauce livido. Long. %, lat. } poll. Hab. Upolu. It has the form and size of M. abjecta, Hald., from Alabama, also of M. truncatula, Lam. It is more robust, paler, and the folds are more prominent and on more whorls than in M. plicata, Lea. ME tanIA StLicuLa. Testa parva, gracilis, sub-cylindrica, trun- cata, epidermide fusco-castaneo induta: spira anfr. ad 4 super- stitibus, rotundatis, spiraliter liratis, supernis longitudinaliter pli- catis; ultimo fusco-zonato; sutura bené impressa; apertura rotundato-ovata, anticé vix producta ; fauce subviolaceo. Long. 4, lat. 4 poll. Hab. Nisqually, Oregon. Very much like the preceding, but considerably smaller, more cylindrical, the whorls more plaited, and a band on the basal one. It resembles M. proxima, Say, which is less cylindrical and with- out folds. MELANIA BULBOSA. ‘Testa parva, conico-oblonga, nitida, de- collata, fusco-viridis: spira anfr. superstitibus 2-3 rotundis ; sutu- ra profunda: apertura ovato-rotundata, vix effusa. Long. 3, lat. 38 poll. Hab. Columbia River. 47 . The whorls are very cylindrical, so as to appear like a succes- sion of bulbs. It is much like M. perfusca, Anthony ; but in that the whorls slope gently to the suture. A broken specimen shows that it often attains a considerable size. MELANIA FuRFUROSA. ‘Testa turrita, ovato-pyramidata, tenuis, scabriuscula, diluté fulva, et propé suturam fusco maculata, striis arcuatis incrementalibus et striis volventibus tenuissimis decus- sata: spira integra, anfr. 7 rotundatis, confertis, superné sub-ta- bulatis ; ultimo magno, ventricoso ; supernis obliqué plicatis: apertura lunata, ad columellam effusa. Long. 3, lat. 2 poll. Hab. Manila. Allied to M. scabra, which is more elongated, and its whorls much less cylindrical, its striz coarse and distant, and crowned with spino-tubercles. MeEtanopsis ZELANDIcA. ‘Testa solida, ovato-conica, nitida, olivacea, fusco-trifasciata : spira conica, brevis, acuta; anfr. 3, supernis planulatis et ad suturam confluentibus ; ultimo magno, posticé planulato, anticé ventricoso: apertura elliptica, ccerules- cens, rufo-fasciata, posticé in canalem obducta; labro acuto: columella valdé arcuata et excavata, posticé callo tuberculoso copioso instructa. Long. 5%, lat. 3% poll. Hab. New Zealand. Compared with M. prerosa, Lin., it is more plump, has but 3 instead of 6 or 7 whorls, the aperture proportionally longer : the columella remarkably arched ; and the surface and aperture are banded with dark chestnut. NeErRITINA PorcaTA. ‘Testa obliqua, sub-hemispherica, solidi- uscula, fusco-rubricans, maculis parvis nigris interdum tessellata, longitudinaliter striata et rugis conspicuis ordinatis sub-imbrica- tis porcata: spira vix tumida, anfractu ultimo penitus involuta ; apertura parva, lunata ; labro callo aurantiaco intus munito ; labio plano, amplo, sanguineo ; columella arcuata; denticulataé. Diam. qo, alt. + poll. Hab. Like N. Bruguieri and canalis, it has the spire wholly involv- ed in the last whorl. The former has a somewhat elevated spire, a larger aperture, and a smooth and silky instead of a ridged surface. The latter is distinct by the canal which winds along the suture. ‘ NERITINA CHOLERICA. ‘Testa obliqué semiglobulosa, solidula, 48 ‘ leviter striata, castaneo-fusca, subtus interdum lineolis flexuosis nigris picta; spira vix exserta, ultimo anfractu recurrente feré involata : apertura obliqué semicircularis, magna, posticé canali- culata; labro flavo ; labio planulato extrinsecus sanguineo tincto ; columella alba, ‘valdé sinuaté, denticulata. Operculum tenue, lividum, sulco divisum, granulatum, ad apicem flavidum. Diam. 2 poll. Hab. Feejee Islands. Allied to the dark varieties of M. dubia, but distinct by its in- volved and girded spire, like N. Bruguieri, and also by its very sinuous and strongly-toothed pillar lip. It has a channel towards the spire much like N. canalis, whose color and marking of the ventral face it also resembles. NERITINA cHRysocoLLA. ‘Testa solida, obliqué conico-globosa, coracina, lineis exilibus obliquis flavidis flexuosis picta: spira elevata, erosa; anfr. 2-3 ventricosis, infra suturam aliquid con- strictis; apertura obliqué semi-elliptica; labro ceruleo, viridi limbato ; labio convexo, luteo-virente ; columella sinuata, dentic- ulata: operculum osseum, salmonaceum, costa bisectum. Long. 2, lat. 2, poll. Hab. Upolu. Of the same group as N. communis, lugubris and helvola, but distinct by its green, blue-edged outer lip and yellowish green pillar lip, as well as by its very delicate zigzag lines, scarcely seen except on the ventral face. NERITINA HELVOLA. ‘Testa solida, conico-globosa, polita, co- loribus fuscis et cervinis plerumque fulgurantibus diversimodé picta: spira prominula, erosa, anfr. 2 superstitibus : apertura obliqué semicircularis, helvola ; columella convexiuscula, callo copioso induté, acuté denticulaté. Long. §, lat. $ poll. Had. Feejee Islands. Closely allied to N. communis, but is rather more globular, and generally smaller, and the aperture has a more nearly circular outline. It has less brilliant and defined coloring, and is always to be distinguished by its eroded tip, and the bright carnelian color of its inferior face. NERITINA SIDEREA. Testa parva, ovata-globosa, polita, nitida, nigra, punctis sparsis albis notata: spira prominula, erosa ; anfr. 2-3; sutura marginaté : apertura semicircularis, intus cce- rulescens; labio plano, angusto, luteo; columella acuta, vix denticulata. Operculum fuscum. Diam. } poll. Had. Feejees. AQ About the size of N. Betica, but more globose and solid ; the inner lip less extended, and yellow instead of bluish, and it also has the white specks by which alone it may be recognized. In N. Betica the opercle is flesh-colored. NeERITINA AM@NA. Testa parva, ovato-triangularis, posticé constricta, striis incrementalibus ordinatis bené insculpta, colori- bus nigris, rubris, flavidis plerumque fasciatim dispositis, et ma- culis quadratis albis nigro-umbratis tessellatim dispositis, picta : spira planulata, erosa, anfr. 2-3; apertura rotundato-elliptica, flavo-viridis ; labro angusto, plano; columella valdé arcuata, 10 denticulata. Operculum viridulum, inornatum. Axis 53,, lat. % poll. This might be regarded as the young of N. polita. It is stri- ated like it, but it differs in the color of its aperture, and in its opercle ; and the shadowed white spots are constant and peculiar. NeritTa Musiva. Testa modica, subsolida, transversa, ovoidea, ventricosa, fusco-cinerea, longitudinaliter crassé striata, sulcis volventibus ordinatis arata, liris interpositis planulatis, sub-gran- ulosis, lineolis crebris albidis sectis: apertura sub-circularis, cali- ciformis, peristomate sub-continuo: labro edentulo, albo, sulcis obliquis fuscis tenuiter arato; labio concavo, fusco, granulis paucis notato, denticulis tribus instructo. Axis d, lat. 3 poll. This unusually-shaped Nerite looks like a Stomatella, with the whorls rounded in every direction, when viewed at the back. Its general form is somewhat like N. signata. It is remarkable for its nearly circular, cup-shaped aperture, its shining black, finely granulated concave pillar, and its gray, minutely mosaic surface produced by the white lines crossing.its ridges. Natica Lewis. Testa proegrandis, solidiuscula, conico-globo- sa, albida, epidermide sordideé stramineo induta, lineis minimis, con- fertissimis, flexuosis cincta ; spira anfr. 6 ventricosis posticé valdé constrictis : apertura obovata, ampla ; callo copioso albo castaneo- tincto supra umbilicum modicum simplicem profundum circum- ambiente, ad anfractum ultimum munita; fauce incarnata. Operculum corneum. Axis 45-5, lat. 4 poll. Hab. Puget Sound. This certainly exceeds in size all other species yet discovered. It is allied to N. heros, some specimens* of which occasionally approach it in size. It is however less*globular, and distinguish- a 50 ed by the remarkable constriction near the suture. Specimens were brought from the mouth of the Columbia, by Lewis and Clarke, and have been designated by the above name. Natica caurina. ‘Testa parva, solida, levigata, globoso-ellip- soidea, albida, epidermide tenui stramineo induta, vix perforata : spira obtusa, erosa, anfr. 44, ultimo sub-tabulato, anticé sub- contracto ; apertura parva, semiluuaris ; columella recta, postice callo copioso albo indutéa. Axis 4, diam. 2 poll. Hab. Straits of De Fuca. Nearly the same as N. impervia, Phil. from Cape Horn, which has a very depressed spire, and its umbilic closed by a semicir- cular callus. Its form and color is like N. tmmaculata, Tott., though it is much larger. It is more solid and less globular than N. Grenlandica. Narica sotuta. Testa parva, globosa, sordidé alba, striis tenuissimis cineta: spira anfr. 5 ventricosis, superné sub-tabula- tis; sutura profundissima : apertura semilunaris, angulo postico callo firmato; labio acuto, tenui, ad basim incrassato, subeffuso : columella recta, callosa, post wabilieucs parvum profundum dila- tata. Diam. 3 poll. vi 2 A small, eal globular ciel, thea to N. borealis, Gray, and N. globosa, King, but distinguished by its deep-channeled suture. » Nartica aterpa. Testa parva, tenuis, globosa, glabra, albido- _livescens : spira anfr. 4 ventricosis juxta suturam linearem tabu- latis, ultimo magno ampullaceo: apertura semilunaris; colu- mella arcuata : basis umbilico modico spirali funiculato, ad aditum angulato, perforata. Long. 3; lat. 2 poll. Hab. Rio Negro. Differs from N. soluta principally in its sutural region, and in its umbilical region, in which latter respect it differs from several allied species such as N. globosa, N. borealis, &c. Natica pILecta. Testa parva, globulosa, solida, sub epider- mide sordida eburnea, lineolis rubiginosis araneosis scutulata et prope suturam lituris castaneis maculata: spira rotundata, anfr. 5 ventricosis : apertura semilunaris ; labro crasso ; columella valdé eallifera, callo anticé et ad funiculum castaneo, et canali trans- verso feré diviso; umbilico ee funiculo feré impleto. Long. 8; lat. 8 poll. Had. Has a general resemblance in size and form to N. maroccana, 51 and must also be allied to N. lupinus, Desh. The whorls are closely appressed at the suture, and the network coloring is much like that on the bands of Conus ammiralis. SToMATELLA DEcoLoRATA. ‘Testa auriformis, depressa, sub- perforata, albida maculis lacteis et labeculis sanguineis marmor- ata, costulis numerosis confertis cincta, striis minutis ad paginam superiorem interpositis : spira prominula, anfr. 4 planulatis, sutura profunda discretis: apertura obliqua, sub-circularis ; columella acuta, superné reflexiuscula, areola lata inornata adjacente. Long. 3; lat. $; alt. 2 poll. Hab. Mangsi Island. Allied to 8. maculata, Quoy, but the spire is less elevated, the aperture is more rounded, and above all, it is characterized by the plain white lunate area adjacent to the columella. STOMATELLA TumIpA. ‘Testa subglobosa, ampullacea, tenuis, nitida, cinereo-olivacea, propé suturam albido et rufo seriatim maculata et lineolis sagittatis vittata, subtus flavescens, sulcis remotis cincta, sulcis basalibus fusco-articulatis: spira anfr. 4 tumidis: apertura circularis intus margaritacea ; labro acuto, albo ; columella revoluta, callo copioso, erecto, albo-striato mar- ginata. Long. 14; lat. 2; alt. % poll. Had. China Seas, Moluccas. : Distinguished by its globular form, shining surface, peculiar coffee-colored ground with delicately painted feathery ridges and the large white erect columellar callus. It accords with the figure in Chemnitz, named Turbo papyracea, but that shell is described as perfectly smooth. AMPULLARIA COLUMELLARIS. ‘Testa ponderosa, imperforata, rhomboidali-ovalis, nitida, sed sub lente arguté reticulata, flavo- viridis, fasciis rubidis cincta: spira elevata, anfr. 7 ventricosis : apertura semilunaris $ longitud. testee adeequans ; columella axil- lari, preelonga, cylindrica, contorta ; labro flavido, evaso; fauce castaneo. Long. 24; lat. 2 poll. Hab. Province of Maynas, Peru. Remarkable for its solidity, its elongated form, its want of umbilicus, and the presence of a columella like that of the buli- moid_ helices. AMNICOLA BADIA. Testa minuta, elongata, ovato-turrita, badia : spira acuta, apice erosa, anfr. 5 convexiusculis, ultimo vix angu- 52 lato; sutura impressa: apertura ovata, peristomate continuo, obtuso, fusco. Long. 1; lat. 75 poll. Had. Banks’ Peninsula, N. Zealand. .w/\ small elongated species like A. pretssit of New Holland. Its color and its dark obtuse peristome give rather marked char- acters to a shel! so small and simple. AMNICOLA EGENA. Testa minuta, tenuis, sub-perforata, elon- gato-turrita, epidermide virescente induta: spira acuta, anfr. 5 convexis ; sutura profunda: apertura ovata; peristomate con- tinuo, labro acuto, patente. Long. }; lat. ;4, poll. Hab. Banks’ Peninsula, N. Zealand. More slender and less solid than A. badia, and of an entirely different color. It is very much like Paludina acuta of Europe. Lacuna cartnaTa. | Testa parva, tenuis, ovato-globosa, epider- mide cornea tenui undulatim striata induta: spira anfr. 5 ventri- cosis, ultimo carina filosd cincto : apertura semicircularis dimidiam testee adeequans; columella rotundata. Long. ;%,; lat. + poll. Hab. Puget Sound. In color and marking much like L. vincta of our shores. Our shell sometimes has the last whorl perceptibly angular, but it never has the filiform carina. Liriopa pEecussaTa. ‘Testa parvula, perfragilis, acuto-conica, badia: spira anfr. 8 convexis, transversim Sstriatis, apicalibus plicatis : apertura ovata anticé subtruncata; labro simplici; col- umella arcuaté, antice unidentata. Long. 3; lat. zy poll. Found on floating wood,,lat. 37° 40' N., long. 54° 30’ W. Agrees well with L. striata, Pfeiff., except that it is less than half the size. Lirrortna patuLa. Testa magna, solida, rudis, rotundato- ovata, cinereo-olivacea albido maculata: spira anfr. 5, ultimo magno, ventricoso; sutura vix impressa: apertura ampla, ro- tunda; columella lata, excavata, alba ; facie ventrali teste quasi attrita, et macula fusca notataé; fauce castanea, anticé albo- vittataé. Long. 2, lat. 3 poll. Had. San Francisco. Remarkable for the amplitude of the aperture, the broad excavated columella, apparently ground away by the protrusion of the operculum. LirToRINA LEPIDA. Testa parva, solida, elongata, biconica, 53 nitida, livida vel sanguinea albido tessellata vel zonata presertim propé suturam et ad peripheriam, spiraliter crebré et tenuiter puncto-striata : spira acuto-conica, anfr. 5, ultimo angulato : aper- tura ovata; labro acuto, pallido; fauce rubra, albo-zonata ; col- umella planulata, sanguinea. Long. 2, lat. 2 poll. Hab. Puget Sound. A small, biconical species like L. lineata, characterized by its finely puncto-striate sculpture, its range of articulate spots, and by the blood-red color of the columella. Lirrorina scututata. Testa parva, ovato-conica, plerumque erosa, castanea vel livida albido inordinatim maculata, striis obso- letis cincta : spira anfr. 5, ultimo ventricoso : apertura laté ovata ; labro acuto, pallido; columella planata, antrorsum: expansa ; fauce livido. Long. 2, lat. 2 poll. Hab. Puget Sound. Allied to L. tenebrosa, but has a more elongate and acute spire ; also to L. lepida, but is more inelegant, and without the coloring of the base and aperture of that shell. LITToRINA CALIGINosA. Testa parva, ovata, tenuis, levis vel lineis incrementalibus striata, epidermide fusco-virente luteo mac- ulato induta: spira, apice erosa, anfr. 4—5, ventricosis ; sutura profunda: apertura vix 3 longitud. testee adequans, rotundato- ovata ; labro continuo, acuto, pallido, vix everso; fauce livido. Long. +, lat. $ poll. Hab. Terra del Fuego. Has the general characters of small specimens of L. tenebrosa, and its structure and color give it somewhat the aspect of a fresh water shell. Lirrorina acuminata. ‘Testa parva, solida, nitida, elongata, conico-turrita, livida obscuré flammulata interdum maculis albidis articulatis cincta: spira acuta, anfr. 6, planulatis, ultimo suban- gulato; sutura profunda: apertura ovata ; columella nitida, mori- tincta. Long. ;3,, lat. 4 poll. Hab. Mangsi Island. A small, much elongated species in the style of L. lineata, known by its regular grooving, and its mulberry-tinted columella. LitToRINA PLENA. ‘Testa parva, solida, ovata, cinereo-oliva- cea, interdum albido reticulata, striis spiralibus insculpta: spira parva, acuta, anfr. 5, ultimo globoso, subangulato ; sutura pro- funda : apertura parva, dilatata et angulata ; columella planulata, rufa, albido marginaté; fauce castanea, albo-zonato. Long. 3, lat. 4 poll. Had. San Francisco. —- 54 The globoseness of the last whorl is remarkable. It is less elongated than L. acuminata, and smaller, more polished, and with a smaller aperture than L. scutulata. Srizirer acicuta. Testa minuta, imperforata, elongato-subula- ta, acutissima, ad apicem integerrima et lenté distorta, nitidissima, livido-lactea interdum flavescente: spira anfr. ad 12 planulatis ; sutura lucida: apertura angusta, ovalis ; labro simplici, antrorsum arcuato, anticé evoluto ; columella vix arcuata. Long. 3, lat. <4, Hab. Fejee Islands, in Holothuria. A much more delicate species than any one of Stilifer or Eulima described. The little Phasianella stilifera, Turt. (Stil- fer turtoni, Brod.) is somewhat like it. 8S. swbulaius, from the West Indies, is much less slender. Sotarium EGENUM. ‘Testa parva, ovato-conica, exalbida, sub- margaritacea : spira anfr. 6 convexis, liris acutis 4 cinctis, posterior- ibus granulatis: basis convexiuscula, perforata ; umbilico scalari- formi, ad ambitum acuto, crenulato: apertura circularis ; labiis feré continuis. Diam. ;3,, alt. poll. The characters of this shell do not bring it strictly within the typical form of Solarium, but its facies is rather that of Solarium than of Trochus. It is to be grouped with S. dealbatum, Hinds, which it closely resembles. It is also similar in form, color, and size to Margarita obscura, Couthouy. Perhaps it would come under the genus Torinta, Gray. TurBo CoNFRAGosUS. ‘Testa solida, albida, pyramidata, rudis, rugosa; rugis parvis, obtusis, ad peripheriam et ad angulum anfractuum interdum in spinis compressis prominulis productis : spira anfr. ad 6, angulatis superné declivibus, ultimo ad peripher- iam acuto; sutura callosa: basis planulata, liris squamosis con- centricis inequalibus ad 8 cincta: apertura circularis; labro acuto, perobliquo; columella curtd anticé dentata ; fauce mar- garitacea. ‘Lat. 14, alt. $ poll. Hab. Dean’s Island, Paumotu group. This species has the low conical form, and bony aspect of the stellate species found in the West Indies. I know of no other similar one from the Pacific. Its wrinkled surface, polygonal whorls, and the squamous basal ridges mark it. 5d Turzo sirius. Testa parva, imperforata, pyramidata, dilute beryllina, leviter corrugata; spira anfr. 4 conicis, infra obliqué plicatis, ad peripheriam acutis et spinis compressis ad 18 armatis : basis planulata, stellaris, liris concentricis muricatis ad 5 insculp- tis; regione columellari arcuata, levigata; labro perobliquo. Diam. 3, axis 8; poll. Hab. New Holland. The multitude and regularity of the triangular projections of the periphery, when viewed from below, give the base a beauti- ful star-like form, much like T. stellaris. Turso LaciniAtus. Testa rudis, depresso-conica, cinerea roseo-tincta: spira anfr. 4, irregulariter plicatis, plicis ad peri- pheriam acutissimis, dilatatis et in spinis elongatis compressis excurrentibus : basis convexiuscula, liris muricatis concentricis 10 — 12 insculpta: apertura circularis ; columella levi, arcuata, rosea ; labio perobliquo: faux margaritacea. Lat. 3, alt. 2 poll. Hab. Manilla. Closely allied to T. rhodostomus, Lk., but wants the double series of spines at the periphery. Trocuus PruNINUS. ‘Testa solidula, elevata, ovato-conica, levis, nitida, prunina, lineis capillaceis numerosis cincta: spira anfr. 7 convexiusculis, ultimo subangulato; sutura profunda : apertura subcircularis ; columella rotundata, alba, anticé roseo- tincta, subsinuosa : interior margaritacea, vivide iridescens. Alt. Z, lat. 7 poll. Had. Auckland Island. This peculiarly colored species has the form, thickness, and appearance of the delicately lineated specimens of Littorina angulifera. TROCHUS TEXTURATUS. Testa conica, imperforata, solida, cin- erea viridi vel roseo-tincta, liris volvyentibus roseo-maculatis et laminis incrementi tenuibus clathrata: spira anfr. 7, vix convexis, ultimo sub-angulato: apertura rotundata, anticé evoluta; col- umella rotundata, labro declivi, acuto: interior margaritacea, iridescens. Alt. 1, lat. 74 poll. Hab. New Zealand. This may be well compared with the coarse, solid, sulcated variety of Littorina angulifera. Trocuus Licatus. Testa solida, ovato-conica, imperforata, ‘ costulis rotundatis flavescentibus ubique cincta, intervallis incar- 56 natis concinneé clathratis, ad apicem violacea: spira anfr. 6 con- vexis: apertura circularis; columella recta rotundata; labro crenulato: regio umbilicalis vix indentata. Alt. ?, lat. 2 poll. Hab. Puget Sound. This shell resembles, in most respects, T. doliarius ; small specimens are like Margarita cinerea, Couth. TRocHUS PUPILLUS. ‘Testa parva, elevato-conica, margaritacea extrinsecus incana, filis virido-fuscis ubique cincta, ad interval- los minutissimé clathrata: spira anfr. 6 convexis: basis planius- cula, fissura umbilicali perforata: apertura circularis ; columella arcuata : faux fulgida, minutissimé punctata. Lat. 3, alt. 33, poll. Hab. New Zealand. Somewhat similar to T. ligatus, but much smailer, more del- icate, more nacreous within, and partially umbilicated. It is still more like Margarita cinerea, but is more solid, and more del- icately marked. Trocuus Jucunpus. ‘Testa parva, solida, conica, flammulis radiantibus invicem coccineis incarnatis et albis picta: spira anfr. 6 sub-angulatis, filis granulosis alternis minoribus cinctis : basis convexiuscula, imperforata, liris concentricis linearibus articulatim pictis insculpta ; regione umbilicali indentata : aper- tura rhomboidea ; columella arcuata, levi; labro simplici. Long. 2, alt. 2 poll. Hab. New Zealand. A very beautiful shell, both in color and sculpture, quite dis- tinct from any described species. Trocuus Grapatus. Testa parva, solida, perforata, ovato- conica, turrita, cinerea ferrugineo-flammulata: spira anfr. 5, declivibus, ultimo carinis duabus biangulato quorum suprema secundum spiram volvat; interspatio trilineato et concinné cla- thrato: basis convexiuscula, liris granulatis concentricis ad 8 insculpta; umbilico amplo, infundibuliformi : apertura circularis ; columella tenui, recta, anticé dentifera. Alt. 3, diam. 2 poll. Hab. Pacific Islands. In most respects it is like T. ewimius, Reeve, which, however, is imperforate. It is also somewhat like T. sulcatus, Wood’s Sup. 57 Trocuus actnosus. ‘Testa solida, convexo-conica, eruginosa, seriebus 4 papillarum insignis et lineolis capillaceis volventibus ubique insculpta; serie antica majori: spira anfr. 6 planiusculis, ultimo acutangulato: basis excavata, cinerea, filis concentricis fuscis cincta; interspatiis indentatis ; regione umbilicali infundi- buliformi et costis duabus tri-partitaé: apertura rhombea ; colu- mella levi, contorta ; labro simplici, perobliquo. Diam. 4, alt. 3 poll. Hab. New Zealand. The peculiarities of this species are, the series of tubercles on the delicately lineated ground, the excavated base with its thread- like unbeaded lines, and the two white ribs in the umbilical pit. May be compared with T. vernus, Chem. Trocnus Etisus. Testa parva, elevato-conica, imperforata, cinerea: spira anfr. 6 declivibus, sutura fossali valdé profunda discretis, costulis transversis granosis tribus (quorum interme- diani minore) cincta, interspatiis clathratis: basis convexa, cos- tulis clathratis insculpta : apertura subcircularis ; columella gran- ulata ; labro intus sulcato. Diam. 3, alt. 4 poll. Dredged at Singapore. Distinct from any described species. Its markings are deeply sculptured, and its peculiar sutural region is a character which cannot fail to be noticed at first glance. It is quite probable that it may be colored differently when quite fresh. TrRocuus BICRENATUS. Testa pyramidata, flavescens, flam- mulis rufis alternis saturatioribus ornata, lineis equalibus granu- losis cincta: spira anfr. 7-8, pené concavis, ad peripheriam acutis et denticulis roseo-crenulatis ad 15 munitis: basis planu- lata; vortice umbilicali eburnea: apertura trapezoidea; colu- mella contorta. Diam. %, alt. 2 poll. The species most resembling it are T. fimbriatus, Lam., and T. Buschii, Phil.; but from these and all others it is well distin- guished by its doubly crenate margin, as viewed from below. The profile outline is a little concave. TRocuHUs circumsutTus. ‘Testa solida, elevata, accuraté conica, imperforata : spira anfr. 9 subangulatis, superné declivibus, infra nodis obliquis et liris granosis cinctis: color cinerea, portionibus cavatis saturaté olivaceis suturas simulantibus: basis planulata, sulcis filiformibus concentricis ad 12 insculpta ; regione umbilicali 8 : 58 eburnea: apertura transversa, sub-rhombea ; columella brevi, acuta, contorta. Lat. 5%, alt. =§; poll. Hab. Madagascar ? In form and sculpture this may be compared with the tip of T. pica. ‘The peculiar coloration, representing courses of olive- colored stitches is characteristic. Trocuus spurcus. ‘Testa parva, solida, globoso-conica, nitida, ubique striis volventibus exilibus insculpta, obliqué strigis angu- latis stramineis et fuscis alternantibus variegata, propé suturam maculis quadratis quoque picta: spira anfr. 4—5 ventricosis, ultimo subangulato; sutura impressa : basis concavo-conica, im- perforata vel arcté umbilicata: apertura perobliqua, circularis ; columella arcuata ; labro acuto, simplici; fauce submargaritacea. Diam. 2, alt. 33; poll. Hab. Madeira. Has most of the characters of T. Fermoni, but is very much smaller, wants the peculiar channelled shoulder of the whorls, and the widely open umbilicus. Trocuus amanus. Testa parvula, depressa, globoso-conica, levis, nitida, fusca, punctis luteis ubique irrorata, et maculis piceis cum flavidis alternantibus ad suturam et ad peripheriam ornata : spira anfr. 4—5 convexis, ad suturam constrictis: basis convexa, imperforata, concentricé striata: apertura sub-circu- laris; regione columellari complanata, alba; columella anticé dentifera ; labro acuto, striato; fauce livida, margaritacea. Diam. 3%, alt. 2, poll. Hab. Feejee Islands. A pretty shell, allied to some of the Mediterranean species, like T. Lessoni. Its small size, minutely freckled surface, with the articulated bands of black and yellow, may mark it. Trocuus (Monodonta) cotusrinus. Testa depressa, conico- globosa, imperforata, olivacea maculis subquadratis hepaticis tessellata, sulcis inequalibus minimé profundis cincta: spira anfr. 5, planiusculis, ultimo ad peripheriam obtusé angulato: basis convexiuscula, regione centrali absque colorem: apertura semi-circularis, columella acuta, anticé truncata et dentem men- tiente; labro acuto, viridi; fauce submargaritacea. Diam. {, alt. & poll. Hab. Madeira. This shell has the form and texture of Tr. umbilicaris. It seems not to be an uncommon shell, but I find no description of it. 59 Trocuus (Moncdonta) instrictus. Testa parva, elevata, ovato-conica, arcté perforata, albida et maculis diluté rufis propé suturam picta: spira anfr. 5, convexiusculis, sub-imbricatis, sutura profunda canaliformi sejunctis, liris acutis ubique cinctis, interspatiis concinné clathratis : basis convexa : apertura oblique semicircularis ; columella acuta, obliqua, in dentem terminante ; labro incrassato, intus sulcato, juxta columellam rugoso et emar- ginato. Long. 2, lat. 33; poll. Hab. Pacific Islands. Trocuus (Monodonta) arropurpurevs. Testa parva, depressa, ovato-conica, atropurpurea, liris granulosis ubique cincta: spira anfr. 5-6, ultimo subangulato: basis convexiuscula, laté per- forata; umbilico cavernoso, limine acuto, denticulato, prope colu- mellam interrupto: apertura circularis ; columella obliqua, acuta, anticé dentataé, emarginata; labro albo et nigro articulato, intus sulcato ; fauce margaritaceov. Alt. 32, lat. 33, poll. Habitat, Tutuilla, Navigator Islands. Allied to T. pharaonis and T. canaliculata, in its habitus and umbilicus, but more like T. corallinus in size and general charac- ters. Its uniform color and granulation, toothed margin of the umbilic, with the conspicuous tooth above, are its characters. Trocuus (Monodonta) RoTELLINUS. Testa parva, solida, len- ticularis, nitida, fissura latebrosa perforata, diluté incarnata, flammulis flexuosis saturatioribus, et seriebus duobus transversis macularum fuscarum variegata: spira anfr. 5, convexiusculis: apertura parva, subcircularis ; columella perobliqua, arcuata pos- ticé ab anfractu sejuncta, anticé in dentem acutum terminante ; labro propé dentem quasi emarginato. Diam. 8, alt. + poll. Hab. Mangsi Island. This curious little shell would at first be taken by its form, polish, and color, for a Rotella, while the notch of the aperture resembles that of Buccinum neriteum. But its umbilic and col- umella place it with Monodonta, or more properly in that sub- division of Trochus named Clanculus by Montfort. TROCHUS TANTILLUS. Testa minuta, conico-discoidea, flavido- cinerea, lineis radiantibus flexuosis fuscis picta: spira depressa, anfr. 4—5 angulatis, ultimo ad peripheriam dilatato, acuto: basis convexiuscula, perforata, flavida, liris duabus concentricis pro- 60 clivibus munita: apertura obliquissima. Axis 74, diam. 4 poll. Hab. Sandwich Islands. I have met with no description of a species so small as this, and yet its characters are very prominent. Its form and concen- tric ridges give it the aspect of a conical operculum. PLANAXIS LINEOLATUS. ‘Testa minuta, solida, acuto-conica, ex albido fuscescens, lineis castaneis numerosis cincta: spira acuta, anfr.6—8 planulatis, supernis granulatis, ultimo 5 teste longitud. eequante, ad peripheriam sub-angulato: basis spiraliter striata: apertura rotundato-ovata, posticé haud callifera; labro pallido, vel fusco tessellato, intus denticulato ; fauce fusco. Axis 4, diam. } poll. Hab, Wilson’s Island. This little shell is not infrequent in cabinets, but I find no de- scription of it. PyRAMIDELLA AMBIGUA. ‘Testa minuta, albida, imperforata, ovato-subulata, costis longitudinalibus exilibus ad 20 ornata, inter- vallis spiraliter striatis : spira acuta, anfr. ad 10 planulatis : aper- tura auriculata, anticé subeffusa ; columella callosa, gibbosa, an- ticé sinuata ; labro simplici, incrassato. Axis }; diam. 75 poll. Hab. Clermont Tonnere Island. The characters of this little shell, which I have for the present placed under Pyramidella, are somewhat abnormal. Its size and sculpture would suggest Truncatella ; its aperture is somewhat like the effuse form of Hulima; the form of aperture is a'so like Pyramidella, though it has no proper plaits, but merely an intru- sion of callus with an adjacent sinus in place of them, and in this, is like Monotigma. Ceriruium (Potamis) sacratum. ‘Testa rudis, elongata, badia et fascia lutea cincta: spira turrita, anfr. ad 10 convexis, vix angulatis, et liris obsoletis cinctis, supernis plicatis, ultimo glo- boso, abnormali, varice magno munito; sutura profunda, lutea : apertura rotundata, antice effusa, haud emarginata ; labro everso, polito, piceo: operculum multispirale. Long. 13; lat. 3 poll. Hab. Sacramento River, California. Allied to C. varicosum, Sowb. The surface, though not smooth, is destitute of longitudinal ribs except near the tip; it has also a pale sutural region and a less marked canal. 61 CeERITHIUM ADUNCUM. ‘Testa solida, distorta, acuminato-con- ica, leviuscula, filis tenuibus cincta, luteo-cinerea, fusco-tincta : spira acuminata, anfr. 9 planis, sutura vix discretis, ultimo gib- boso, valde deflecto: apertura angusta, callosa, in canalem adscendentem producta; labro crasso, simplici; fauce livido. Long. 1; lat. 2 poll. Hab. Mindanao. This smooth, solid, dusky species is plainly marked by its peculiarly distorted form, the last whorl being so flexed upon the others that its ventral outline is straight, while the dorsal outline is remarkably arched. CERITHIUM IRRORATUM. ‘Testa ovato-conica, transversim stri- olata, fusco-nigricans, punctis elongatis cinereis irrorata: spira conica, anfr. 7, planulatis, longitudinaliter undulatis, ultimo dimidiam teste superante ; suturé obsoleta : apertura rotundato- elliptica; labro declivi; canali brevissimo; fauce livido, albo- fasciato. Long. ?; lat. 4 poll. Hab. ? Generally resembling C. ocellatum, Lam., which has a median tuberculated angle on each whorl and an excavated sutural region, while this has a regularly curved outline and folded surface. The pale spots are less numerous, and the proportions of the aperture are different. CERITHIUM soRDIDULUM. ‘Testa elongata, rubiginoso-albida, costellis numerosis et filis volventibus alternatim majoribus reti- culata: spira turrita, acuminata, anfr. 11 planulatis, ultimo vari- coso, granuloso; sutura profunda: apertura ampla, ovato-rotun- data ; labro crenulato, extus incrassato, rufo-tincto ; rostro atten- uato, valdé recurvo ; fauce alba. Long. 7% lat. 1 poll. Hab. ? In its general structure, especially in the development of the last whorl, this may be compared with C. columna, Sowb., but it differs entirely in sculpture, its beak is very much shorter, and it is very much smaller. CERITHIUM INvAGINATUM. ‘Testa elongato-turrita, sordidé alba, ad apicem et interdum ad rostrum rufescens, filis tenuibus cincta; spira anfr. 10-12 angulato-convexis, superné tabulatis, inferné constrictis, nodoso-plicatis et concinné lamelloso-rugosis, ultimo carinato: apertura subquadrata, alba; rostro gracili, recurvato. Long. 7, lat. } poll. Hab. Feejee Islands. A very peculiar species. The tuberose whorls narrowed an- 62 teriorly, so as to appear when viewed from above as if crowded into each other, and the very delicate wrinkling of their superior portion renders the diagnosis clear. CERITHIUM c&LATUM, Couthouy MS. ‘Testa subulato-turrita, diluté rufa : spira anfr. ad 13 vix convexis, longitudinaliter crebré sulcatis, et lineis duabus impressis cinctis, ultimo anfr. ad basim inornato ; sutura impressa : apertura rotundata; columella arcu- ata, rostro brevissimo. Long. 3; lat.+ poll. Hab. Terra del Fuego. This species belongs to the same group as C. turritella, which itresembles ; but in its delicate form it still more strongly resem- bles C. sardoum, Cantr. CeriTHIuM FiLosum. ‘Testa parva, elongato-turrita: spira anfr. ad 8 planulatis, sulcis et liris alternantibus equalibus ad 4 cinctis, coloribus cinereis et pallidé rufis partitis; sutura impress : apertura parva, semi-elliptica, anticé emarginata ; col- umella vix arcuata; labro acuto. Long. 3, lat. 4 poll. Hab. Puget Sound. Only a single specimen of this turritella-like Cerithium has been examined. It is of the same type as C. celatum, and is well characterized by its simple revolving lines and grooves, and its coloration. CERITHIUM PUSILLUM. ‘Testa minuta, fulva, turrita, varicosa, longitudinaliter undata, undis ad 10, propé basim evanescentibus : spira acuminata, anfr. 8 convexis, filis tenuibus granulosis 4 cinc- tis, anfractu ultimo multicincto: apertura lata, ovata, obliqua ; rostro brevissimo ; labro varicoso; columella arcuata. Long. +, lat. <4; poll. Hab. Sandwich Islands. A little shell about the size, and with many of the characters of C. Emersonii. It also resembles C. ferrugineum, Say, but is much smaller. CERITHIUM EGENUM. ‘Testa minuta, lanceolata, albida, ad basim maculis parvis fuscis notata: spira acuminata, anfr. ad 10 convexiusculis, filis ad 5 cinctis, quorum centrali et suturali ma- joribus, anfractu ultimo utrinque varicoso: apertura rotundato- ovalis ; rostro brevissimo ; columella posticé callosé. Long. 3, lat. 2 poll. Hab. Wilson’s Island. 63 The characters of this little shell are somewhat negative, but on the whole it may be distinguished by its sharp revolving lines having a tendency to granulation, without longitudinal folds; the little blotches in the region of the rostrum seem to be constant. It is a little like C. lacteum, but much smaller. CERITHIUM IANTHINUM. ‘Testa parva, tenuis, ovato-lanceolata, violacescens sed labro sutura et varicibus albis: spira acuminata, anfr. trivaricosis ad 10, filis tenuibus ad 8 cinctis, quorum medi- ani majori et granoso ad anfractus apicales: apertura ovato-ro- tundata; rostro brevissimo; columella vix callosa. Long. 3, lat. 3; poll. Hab. Clermont Tonnere. If this be not the young of some other species, which I some- what suspect, it is very well marked by its color alone. The contrasting of the white and violet, and its numerous ribs being beautifully displayed. It is larger than C. egenum. PLEUROTOMA SEMINIFERA. ‘Testa subulato-turrita, fuscescens, filis deorsum crescentibus cincta: spira anfr. ad 12, juxta sutu- ram carinatis, deinde excavatis,ad medium nodulis obliquis rubris ornatis : apertura angusta, 3 long. teste adequans ; cauda brevi ; sinu zqué lata ac profunda ; columella rectiuscula ; fauce livido. Long. 12; lat. 2 poll. Hab. ———. Closely allied to P. interrupta, Lk., but differing from figures of it in color, and from the description in having a more deci- dedly excavated girdle in front of the suture, in the greater obliquity of the folds, and in their not reaching to the suture below. MANGELIA ciTHaRA. Testa parva, rhomboideo-fusiformis, cin- erea, costis acutis longitudinalibus 7 instructa, interstitiis conca- vis, subtiliter transversim striatis : spira turrita, anfr. 7 bené dis- cretis, ultimo ovato-triangulari 2 long. teste adequante : apertura angusta, labro lato, varicoso, posticé rectangulari, vix sinuato ; columella concinné rugosa. Long. 2; lat. ;3; poll. Hab. Feejee Islands. Much like M. Hornbeckii, a West Indian species, but has a much narrower aperture, fewer ribs, and the last whorl shorter. M. pessulata has also many more ribs, and is much less acumi- nated anteriorly. 64 Fusus tiratus, Couth. MS. ‘Testa parva, solida, ovato-fusi- formis, straminea, longitudinaliter plicis angularibus instructa et striis profundis cincta ; spira brevis, conica ; anfr. 7, ventricosis posticé angulatis, ultimo 2 long. testee adequante, antrorsum in rostrum tenuem, contortum subito contracto: apertura angusta, ovata, in canalem obducta; columella polita, contorta, alba. Long. }, lat. $ poll. Dredged at Orange Harbor. The prominent trigonal ribs, cut by the deep, somewhat dis- tant revolving lines, with its slender rostrum, are characteristic of this species. It resembles Buccinum cancellarioides, Reeve. Fosus crispus, Couth. MS. Testa parva, subrhomboidea, elongata, rudis, cinerea, plicis laminosis 8 variciformibus e striis laxis incrementalibus compositis instructa, et liris obtusis cincta: spira acuto-conica, anfr. 7—8, convexis, posticé plus minusve angulatis, ultimo ventricoso, 3 long. testes adequante, antrorsum in rostrum acutum subito attenuato: apertura rotundato-ovata, labro semicirculari, crenulato ; columella rectiuscula. Long. 7; lat. 95 poll. Dredged at Orange Harbor. This species, from its variciform plaits might be regarded as a Murex, were it not for its rostrum, and its animal. The form varies greatly, as well as the degree of angularity of the whorls ; but the peculiar lax arrangement of the stages of growth, espe- cially where they form the varices, allows of no mistake. Fusus incisus. Testa elongato-ovata, livido-cinerea, striis profundis volventibus saturatioribus incisa: spira conica, anfr. 7 convexis, apicalibus undulatis, ultimo 3 long. teste ; rostro brevi, vix recurvo: apertura 3 long. teste, angusta, subovalis ; labro arcuato, acuto, crenulato ; columella rectiuscula, levi, subcon- torté, purpurascente; faux livido-fusca, sulcata. Long. 13; lat. Z poll. Hab, Puged—d This buccinoid species should perhaps be grouped with the genus Pollia of Gray. It has no remarkable characters except its dingy livid brown color, and the deep cut revolving lines. Fosus ripicuta. Testa parva, tenuis, albida, longitudinaliter lamelloso-costata, costis 24, striis volventibus ad 8 decussatis: spira conica, turrita; anfr. 7 tabulatis, ultimo in rostro brevi subito attenuato: apertura angusta, dimidiam long. teste haud wquans, posticé angulata; labro acuto, crenulato; columella 65 posticé arcuata, alba, polita. Long. 3%; lat. 9 poll. Had. Puget Sound. The counterpart of F. turricula, from some varieties of which it would not at first be distinguished; but it is smaller, more solid, the longitudinal ribs more lamellar and more decidedly cut by the revolving lines, which are also less numerous. Fusus orpHevs. ‘Testa parva, elongata, cinerea: spira tur- rita, anfr. 6 superné angulatis, lamellis acutis longitudinalibus muricatis, et filis transversis cinctis ; anfr. ultimo posticé ventri- coso, antrorsum in rostrum vix reflexum attenuato: apertura elliptica, + long. teste, posticé angulata ; labro acuto; columella anticé intrudente; fauce carnicolori. Long. 3; lat. + poll. Hab. Puget Sound. More slender, the beak longer, the longitudinal bars less numerous and more lamellar than in F. fidicula ; in form it is more like F. bamffius. Fusus sustutus. ‘Testa parva, tenuis, elongata, pallida vel ad basim et ad suturam livida, longitudinaliter costata, costis ad 12 erectis, obtusis, ad suturam haud attigentibus, sed secundum rostrum productis: spira acuto-conica, anfr. 7-8 convexis, api- calibus levibus, czeteris minutissimé decussatis, ultimo sub-globoso 4 teste long. adequante: apertura angusta, posticé angulata ; labro posticé arcuato ; fauce castaneo, albo fasciato. Long. 2; lat. } poll. Hab. ———. The last whorl and beak are unusually short, with much the aspect of a Mangelia. The coloring of the aperture is very decided, while the surface looks dead and chalky. TRITON BRASILIANUM. ‘Testa rhomboidea, elongata, rufescens, epidermide tenui longitudinaliter hic illic fimbriato induta: spira conico-turrita, anfr. 6, tabulatis, supernis costis quadratis duabus ad apicem granulatis cinctis; anfr. ultimo triangulari costis 6 undato-nodosis antrorsum diminuentibus cincto, in rostrum vix recurvum producto: apertura 4 long. teste ovato-lunata; labro valdé varicoso, costis supereuntibus, interspatiis fuscis, plicis geminatis albis munitis; columella castanea rugis albis obliquis ornata. Long, 2, lat. 14 poll. Hab. Rio Janeiro. This appears to be one of several species confounded under the Linnean T. doliarium. Deshayes has indicated it as a dis- 66 tinct species, but has not described it. ‘The coloring is hke T. doliarium, but the form and cincture is more like 7. cutaceum. The aperture and lip is like T. pileare, and it may be regarded as intermediate between the two latter species. Triton munDUM. ‘Testa parva, solida, oblongo-rhomboidea, straminea, epidermide tenul, sparsim hirsuto induta: spira conica, anfr. 4, convexiusculis, ultimo gibboso, tri-nodoso, in rostrum rectiusculum attenuato, costulis tribus et liris intermedianis cincto et filis continuis longitudinalibus decussato: apertura angusta, ovalis, 4 testee adequans; labro crasso, tuberculis geminatis 7 crenato; columella arcuata, posticé dentifera; fauce albo. Long. 7; lat. 2 poll. Hab. Tutuilla, Samoa Islands. This might be regarded as the young of T. nodosum ; | but besides bearing all the marks of maturity, it is more slender, the longitudinal lines are stronger, and the lip is white. Pyos varicosus. Testa elongata, lanceolata, fulvida, rubi- ginoso-cincta, costis lamellosis ad 16 clathrata, quorum ad tribus in singulis anfractibus, variciformibus, pallidioribus, interspatiis duplo latioribus, concavis et lineis incrementi striatis, omnibus filis volventibus retrorsum acclinatis decussatis: spira turrita, anfr. 9-10 superne turgidis: apertura angusta, lunata, posticeé rotundata 4 long. teste adequans; labro simplici, intus sulcato, rosaceo ; columella 4 plicata ; canali siphonali brevi. Long. 14, lat. 3°, poll. Hab. Philippine Islands. This curious shell is somewhat anomalous, having the varicose spire of a Triton, but the unequivocal aperture of Phos. It may be compared with P. retecosus, Hinds, having the more slender form and finer reticulation, but with the peculiar varicose lip, and nearly the same size and color. It is perhaps still more like P. senticosus, but it is much less asperous, and peculiarly inflated near the suture. Mvrex (Trophon) rruricosus. Testa parva, tenuis, subrhom- boidea, straminea: spira anfr. 5-6 angulatis, superné concavo- declivibus, serie mediani spinarum armatis, spinis ad 6 tubulosis, subramosis, recurvo-adscendentibus; anfr. ultimo series tres spinarum lamellis longitudinalibus conjunctarum gerente : aper- tura ovato-trigona, 3 teste long. adequans ; rostro brevi, dextror- sum deflecto. Long. ?; lat. 4 poll. Hab. New Holland. 67 It has the form, size, and armature of M. noduliferus, Sowb., which is described as being transversely striated, and with a very short canal. Buccinum (Bullia?) vetatum. ‘Testa solida, ovato-lanceo- lata, levis, polita, livido-violacea, albido-reticulata, versus labrum pallescens, et lineolis rubiginosis cincta: spira acuto-conica, anfr. 7-8 convexiusculis, serie suturali gemmularum coronatis, ultimo 2 long. teste adequante et ad basim spiraliter striato: apertura ovalis, posticé canaliculata ; Jabro acuto, extrorsum incrassato, intus 10-sulcato; sinu siphonali obliquo, profundo, castaneo- tincto. Long. 1; lat. 2 poll. Hab. Mindanao. This may be compared with Buccinum vitiatum, but is smaller, and proportionally shorter. Its aperture has the posterior callus, and small, closed siphonal notch of Nassa. The sutural vitta is very delicate ; and its peculiar coloration, especially its pale lace- like reticulation, is quite distinctive. BuccINUM FUNEREUM. ‘Testa elongata, ovato-conica, lurido- cinerea, striis tenuibus cincta: spira turrita, anfr. 6—'7 superné excayatis, inferné plicis longitudinalibus undatis: apertura angusta, ovalis, ad dimidiam long. teste ; labro simplici, posticé emarginato ; columella rectiuscula; fauce hepatica. Long. 1; lat. 3 poll. Hab. New Zealand. Another of the peculiar group of liver-colored Buccina from Australia, which seem to have a loose, porous, ash-colored super- ficial layer, with a posterior notch to the aperture, ( Tritonium 2) It is well marked by the excavated constriction near the suture, and the coronated appearance produced by the termination of the folds at the middle of the whorls. Buccinum FossatuM. ‘Testa tenuis, ovata, ventricosa, rufo- cinerea, annulis et sulcis subequalibus cincta: spira conica, anfr. 7 convexis, supernis clathratis, ultimo ventricoso, posticé declivi et obliqué fluctuato: anticé brevissimé rostrato ; rostro canali valdé effosso cincto: apertura lata, ovato-quadrata ; labro valdé arcuato; columella obliqué liraté et callo tenui induta. Long. 14; lat. 1 poll. Hab. Puget Sound and Mouth of Columbia River. Its thin structure, ventricose form, the very oblique folds on the upper part of the large whorl, and the remarkable channelaround the base of the siphonal notch, are its chief characters. It be- 68 longs to the same group as NV. trivittata, Say. On some speci- mens a fine thread intervenes between the broader rings. Buccrnum (Pollia) Farinosum. Testa parva, solida, ovato- rhomboidea, lutescens rufo cincta, spiraliter granulato-filosa, lon- gitudinaliter undato-plicata, plicis ad 8 acutis demum numerosis et propé labrum acutum in varicem terminantibus: spira brevis, conica, anfr. 6 convexis, ultimo antrorsum acuminato, sub-reflexo : apertura angusta, lunata, labro intus 6 plicato ; columella rugoso- granulosa, callosi; fauce albo. Long. 3 ; lat. 3% poll. Hab. Sandwich Islands, Kauai. This little muriciform species is quite pretty; and appears to belong to the group of which B. undosum is the type. Nassa musiva. ‘Testa solida, ovato-conica, polita, albido et olivaceo marmorata, coloribus in maculis quadratis tessellatim dispositis: spira conica, anfr. 6-7 convexis, bené discretis, ul- timo 2 long. teste, propé labrum pallidiori, longitudinaliter plicato et lineolis olivaceis cincto: apertura + long. teste, ovalis, posticé canaliculata; columella valdé arcuata, obliqué sulcata; labro intus sulcato, sulcis fuscatis. Long. 4; lat. 9% poll. Hab. Cape de Verds. This is one of the most beautiful species of the genus, and is well characterized by its polished surface, and its clouding of white and olive, made up of little quadrate spots, arranged in encircling series resembling mosaic. It may be B. pictum, Dunker. Nassa Luripa. Testa solida, conico-ovata, levis, livido- cinerea albido-variegata: spira conica, acuta, turrita, anfr. 7-8 convexiusculis, superné tabulatis et ad angulum crenato-nodosis, apicalibus plicatis, ultimo anticé sulcis 3 — 4 cincto et poné labrum plicato ; sutura canaliculata: apertura 3 long. testa, ovalis, pos- ticé emarginata; columella posticé lamellifera, anticé dentifera ; labro acuto, albo, extus incrassato, intus suleato; canali siphonali profundo. Long. 3%; lat. 3 poll. Hab. Samoa Islands, Tu- tuilla. Resembles WV. musiva in surface and color, but the spire is more elevated, and there is merely a mottling of colors without any definite arrangement. 69 Nassa curta. ‘T. abbreviata, ovato-conica, lutescens inter- dum rufo subfasciata, subspinosa, longitudinaliter plicata ; plicis ad 13 tenuibus, acutis, liris conspicuis decussatis: spira conica, anfr. 6 convexiusculis ; ultimo globoso 3 long. teste adequante : apertura rotundato-ovalis ; labro crenulato, intus sulcato, extror- sum incrassato; columella callo copioso granuloso induta; sinu siphonali angusto, profundo. Long. 39; lat. 3% poll. Had. Samoa Islands. Remarkable for its broad, abbreviated form. In some of its characters it is allied to NN. muricata, but its surface has much more numerous and more delicate asperities. Some specimens are distorted and still more finely sculptured, losing in a great degree the longitudinal folds. Bucc. scabrum, Dunker, must be like it, but is described as larger, more solid, and slender. Nassa cINcTELLA. TT. solida, ovato-conica, nitida, albida linea unica rufa cincta, plicis longitudinalibus acutis ad 10 et striis volventibus ad 8 decussata: spira conica, anfr. 7 planius- culis angusté tabulatis, ultimo subgloboso 2 long. teste ade- quante: apertura angusta, ovalis, + long. teste haud equans ; labro crenulato, extus incrassato, intus 7-sulcato ; columelle callo haud appresso, concinné rugoso; incisura siphonali angusta, pro- funda. Long. 3%; lat.+ poll. Hab. Pacific Ocean. This very pretty shell is well marked by its short conical form, its few prominent ribs, shouldered whorls, and thread-like vitta. It accords well with Bucc. Jonasii, Dunker, except that one of the principal characters of that shell is to have the interior of the lip smooth. Nassa. casta. Testa tenuis, lanceolata, vitrea, alba fasciis rubiginosis binis cincta, longitud. costato-plicata; plicis ad 14, striis remotis volventibus decussantibus: spira acuto-conica, anfr. 8 convexiusculis, apicalibus politis, ultimo 2 long. teste ade- quante: apertura elliptica; labro acuto, intus 11-striato; colu- mella callosa, concinné corrugata ; sinu siphonaliamplo. Long. 2; lat. 4 poll. Hab. Pacific Ocean. This elongated, glistening shell has no one with which it may be well compared. It is a little like Bucc. macula in size and form, but in other respects it is more like B. Cuvieri. Nassa acinosa. T. solida, ventricosa, ovata, lutescens cine- 70 reo obscuré fasciata, papillis e sulcis volventibus et longitudinali- bus qué remotis ubique obsita, serie suturali majori: spira conica, anfr. ad 8 planis, declivibus, superné tabulatis, ultimo magno, ventricoso: apertura parva, angusta; labro acuto pos- ticé sinuato, intus 5—6 sulcato; columella valdé concava, pos- ticé lamelligera, callo tenuiinduta ; regione siphonali plano, albo, sinu amplo, profundo; fauce fusco-fasciata. Long. 7; lat. 345 poll. Hab. —? Differs from the shell given by Kiener as young B. marginula- tum by its more ventricose form, much coarser sculpture, less elongated spire, and the presence of the posterior lamina on the pillar. It may be compared with Bucc. Gruneri, Dunker. Nassa paurera. ‘T. parva, solida, ovato-lanceolata, albida linea rufa unica cincta, longitrorsum 18-costulata, et liris con- tinuis cincta: spira acuto-conica, anfr. 6-7 ventricosis, ultimo brevi, subgloboso ; sutura profunda: apertura parva, subcircu- laris, + long. testee adequans; labro arcuato, intus 10-striato ; columella anticé producta, callo granuloso haud appresso parcé induta. Long. 3; lat. 4 poll. Hab. Pacific Ocean. Much resembling Bucc. coccinella, but smaller, less ponderous, more slender, the last whorl proportionally larger, the ribs less numerous, but the revolving lines more so. Nassa MENDIcA. ‘Testa parva, rudis, solidula, elongata, rufo- cinerea, longitrorsum undato-plicata, spiraliter crebré lirata, epi- dermide tenui lutoso induta: spira elongata, anfr. 6-7 ventrico- sis, ultimo ellipsoideo, dimidiam long. teste superante: apertura parva, alba, ovata; labro simplici, vix crenulato, intus 10-lam- inato; columella producta, arcuataé, vix callosd ; sinu siphonali amplo. Long. 4; lat. 2 poll. Hab. Puget Sound, Nisqually, &c. A somewhat rude shell, very variable in its surface, being the Pacific analogue of IV. trivittata, Say. It is more solid, more undulated, less shouldered, its pillar lip more protracted, and its aperture smaller. It is also closely allied to N. perpinguis, Hinds, from the California coast, though differing essentially from his description and figure. Nassa RupricaTa. Testa parva, elongata, ovata, granulata, epidermide fulvo lineis interruptis rufis cincto induta, longitror- sum 15-costato-plicata, plicis ad anfr. ultimum obliquis, versus 71 labrum evanescentibus, et striis impressis decussatis ; stria sutu- rali majori, seriem gemmularum efformante : spira acuto-conica, anfr. 6 convexiusculis: apertura 4 long. teste haud equans, rotundato-ovata, lactea; labro intus crenulato; sinu siphonali mediocri. Long. $; lat.4 poll. Hab. Pacific shore. I know not any species with which to compare this, except perhaps, Bucc. corrugatum, from which it differs in its aperture. Its elongated form, oblique folds on the outer whorl, and its white aperture, are its most conspicuous characters. The revolving fawn-colored lines only appear when its deep brown epidermis is removed. CoLUMBELLA vALGA. T. ovato-lanceolata, sub-distorta, fulvo- marmorata et lineolis crebris rufis cincta, ad apicem rosacea : spira acuminata, anfr. 9-10 convexiusculis, supernis longitror- um tenuiter plicatis, ultimo levi, contracto, ceteris nonconformis 2 long. teste adequante; sutura profunda: apertura angusta, lunata; labro arcuato acuto, intus sulcato: columella transversim plicata, callosa; sinu siphonali angusto, producto. Long. 3; lat. 4 poll. Hab. Pacific? Closely allied to C. avara, Say, in form, size, and ground color, but readily distinguished by its distorted form, the encir- cling chestnut lines, and the want of revolving striz between the folds. CoLUMBELLA cASTANEA. 'T’. parva, solida, elongata, ovata, levis, castanea vel fascia angusta albida cincta: spira ovato- conica, anfr. 7 convexis, ultimo ovali 4 long. teste superante, ad basim spiraliter striato: apertura ampla, alba; labro recto, pos- ticé emarginato, rufo-tincto, intus sub-plicato; columella anticé plicata; sinu siphonali amplo. Long. 3; lat. 2 poll. Hab. Rio Janeiro. Compared with C. unicolor it is smaller, the aperture is less rotund, and it has a pale cincture. CoLUMBELLA GAUSAPATA. ‘'T. parva, solidula, elongata, ovato- conica, ad basim spiraliter striata, sub epidermide rudi subrufo concinné rufo-reticulata vel variemodé maculata aut fasciata: spira conico-turrita, anfr. 6-7 convexiusculis, ultimo 2 long. test, anticé subitd in rostrum brevem angustato ; sutura valdé impressé: apertura angusta lunata; labro simplici, rufo, intus sparsé denticulato. Long. 4; lat. 4 poll. Hab. Puget Sound. 72 An inelegant, very simple species allied to the preceding ; but it is less ventricose, the aperture paler and narrower, which with its tough, wooly epidermis sufficiently characterize it. Beneath the epidermis it is polished and finely reticulated, blotched or banded. Mirra vireLuIna. ‘T. lanceolata, solida, diluté aurantia ma- culis albis fasciata, sulcis linearibus ad 15 lyrata et striis tenuibus crebris cincta; intersectionibus punctatis: spira elevata, anfr. 8-9 planis, ultimo 2 long. teste, cylindraceo, anticé angustato : apertura angusta ; labro recto, simplici; columella 4-plicata, sinu siphonali brevi, vix recurvo. Long. 12; lat. 3% poll. Hab.—? An elegant species about the size of M. subulata, having the general form and coloration of M. glabra, Sw., and is sculptured more like M. impressa, Reeve. Mitra Fipicuta. ‘'T. lanceolato-fusiformis, livido-crocea, fas- cia albida unica cincta, plicis acutis albidis ad 12 lyrata; spira anfr. 9 planulatis posticé tabulatis, apicalibus (ultimo etiam ad basim) spiraliter striatis: apertura angusta, intus tenui-striata ; columella 4-plicaté; fauce rufo; canali siphonali curto, feré recto. Long. 2; lat. 33; poll. Hab.—? There is no species corresponding very nearly to this. Per- haps MM. cinerea, Reeve, resembles it as much as any one. Mirra corHina. ‘T. fusiformis, albida, liris volventibus et liris longitudinalibus altioribus ubjque reticulata ; areolis intercep- tis profundis: spira turrita, anfr. 9-10 planiusculis subtabulatis, ultimo antrorsum in rostrum contortum subito desinente : aper- tura angusta, flexuosa, posticé obtusa; columella 4 plicata, plicis antrorsum minoribus. Long. 8;; lat. 3% poll. Had. Singapore. The form, size, and color is like MM. sutwrata, Reeve, but the sculpture is quite different, that species having no longitudinal ridges, and the transverse grooves are described as deep and punctured, and the intermediate ridges slightly granose. Mirra rorata. T. modica, solida, lanceolata, cinerea rubi- ginoso-marmorata, clathris longitudinalibus quadratis ad 30 et striis tenuibus volventibus decussata: spira elevata, anfr. 9-10 planis posticé angulatis ; ultimo cylindraceo anticé sensim atten- uato, dimidiam long. teste superante: apertura angusta, labro 73 acuto, roseo, 13-sulculato ; columella 4 plicata ; rostro lato obliqué reflexiusculo; fauce incarnata. Long. 4; lat. 8; poll. Hab.—? The form and sculpture is much like that of M. hebes, Reeve, but the coloring is more like M. crenifera. It is more cylindri- cal and the bars are less prominent than M. cophina, besides the difference in coloration. Mitra caprituata. T. parvula, elongata, ovato-fusiformis, polita, rufo-castanea lineolis longitudinalibus flexuosis croceis ornata : spira acuto-conica, anfr. 7 convexiusculis, ultimo bifariam attenuato, anticé striis prominulis cincto; sutura impressa : aper- tura 4 long. teste, angusta, elliptica ; columella 3-plicata, posticé callosa; fauce luridaé. Long. .%; lat. t poll. Hab. Madeira. This beautiful little shell is easily identified by its dark ma- hogany color and its delicate yellow lineations, like those on some species of Neritina. M. semen, Reeve, which is not so slender, and has fewer and broader lines, is the only species approach- ing it. Mirra ENcausta. T. parvula, solida, curta, ovato-rhomboidea, cinerea, longitrorsum 8 —9 plicata et sulcis fuscescentibus cincta : spira conica, anfr. 8 ventricosis, supernis granulosis, ultimo 2 long. teste adequante ; sutura canaliculata: apertura parva, linearis ; labro acuto, vix sulcato ; columella plicata, posticé callo copioso induta. Long. 3%; lat. 4 poll. Hab. Feejee Islands. A small, very decidedly marked species, most remarkable for the deeply incised, somewhat punctate, dark revolving lines on an ash-colored ground, its wave-like folds and its short rhom- boidal form. Conus pitectus. T. parva, gracilis, conica, albida, ferrugi- neo concinné reticulata et seriebus binis macularum candidarum et rufarum alternantium cincta: spira elevata, concavo-conica ; anfr. 8-9, angulatis, coronatis, posticé striatis, ultimo inermi, anticé 6-8 sulcato: apertura linearis; columella recta ; fauce incarnata. Long. 4; lat. } poll. Hab. Fejee Islands. Puoxas patuLa. T. oblonga, papyracea, alba, inequilateralis, concentricé undato-striata, constrictione mediano partita; latere antico triangulari, radiatim costato, costis ad undas tuberculiferis ; latere postico subquadrato, inermi: margine cardinali revoluto, 10 T4 umbonem tegente sed non adnato, callum dentiformem instructo : cochlea subulata, arcuata : cavositate ad undas, costas et tubercu- los indentato. Long. 3; lat. 14; alt. 14 poll. Had. Philippine Islands. The shell most nearly approaching to this is P. latissima, Sowb., and possibly may be the same species. It also resembles P. truncata. It is remarkable for the breadth of the valves. SoLeNn scatpruM. ‘Testa transversa, oblonga, retrorsum dila- tata, feré unilateralis, tenuis, lucida, epidermide flavo-viridi, nitido, iridescente induta; latere antico sub-acuto, obliqué rotun- dato; latere postico semicirculari: cardo dentibus duobus con- tiguis, divergentibus in v. dextra; dente subulato, arcuato in v. sinistra; margine cardinali costa alba submarginali suffulto: interior albida. Long. 12; lat. 8; alt. 33, poll. Hab. Singa- pore. Allied to Solecurtus costatus and radiatus. The hinge margin is fortified by a thickening, and indeed there is the vestige of a rib passing from the beak to the ventral margin. SoLeEN sicartus. 'T. transversa, oblonga, retrorsum angustata, sub-falcata, epidermide crasso, nitido, corneo induta, anticé ob- liqué truncata, posticé rotundata: valvis valdé excavatis, undu- latis, in areis triangularibus indistinct€ partitis; margine dorsali recto; m. ventrali arcuato; natibus terminalibus: cardo dente triangulari, erecto, recurvo in utraque valva instructus. Long. 33; lat. x5; alt. 39; poll. Hab. Straits of De Fuca, Oregon. The only species to which this bears any resemblance is S. viridis, which has nearly the same hinge and general form, but which is a more delicate and more slender shell. Panop#a antTarctica. 'T. subquadrata, crassa, alba, rudis, concentricé undata, posticé truncata, anticé angustata et rotun- data; margine cardinali erecto, margine ventrali arcuato; um- bonibus latis, elevatis, feré medianis : cardo dente parvo, conico instructa: sinu palleali lato, arcuato, minimé impresso; cicatrice musculari postica discreta, crescentiformi. Long. 23; alt. 2; lat. 14. Hab. Rio Negro, Patagonia. Besides being destitute of ribs, it is more nearly equilateral than P. arctica, and has the beaks more posterior. It is less gaping, and the posterior truncation is scarcely oblique. 75 PaNoP#A GENEROSA. Testa magna, ponderosa, calcarea, sub-quadrilateralis, concentricé unduloso-plicosa, epidermide ru- goso flavido induta, anticé rotundata, posticé truncata et valdé hians ; umbonibus submedianis, acutis, elevatis, undulatis: cardo gracilis, dente elevato obliqué triangulari instructus : cavositas ad apicem profunda ; cicatrice musculari lato, bené impresso ; sinu siphonali minimé profundo. Long. 6; alt. 4; lat. 3 poll. Had. Puget Sound, Oregon. This large species stands by the side of P. Aldrovandi, but is distinguished by the form of the anterior extremity. Mya pracisa. T. M. truncate similis, calcarea, epidermi- decorneo induta, ovata, anticé rotundataet ventricosa, posticé angustata, compressa et truncata; cardo dente trapezoideo, latiore quam elevato, posticé declivo instructus; linea palleali angustaé, crenata; sinu siphonali profundo, arcuato; cicatrice anteriori elongato, falciformi. Long. 24; lat. 1; alt. 13 poll. Hab. Puget Sound. Differs from M. truncata in being more narrowed posteriorly, more rounded anteriorly, more inflated at the umbonal slope, in its narrow palleal impression and deeper siphonal sinus, and more particularly in having the tooth slope backwards. Macrra DELUTA. ‘T. tumida, ovato-rotundata, hiantissima, sordida, epidermide tenui deluto, obliqué corrugato induta, con- centricé undulata; umbonibus submedianis, tumidis, incumben- tibus, contiguis; margine dorsali utroque declivi; margine ven- trali rotundato; lateribus obtusis: cardinis fovea ligamentali profunda; dente V-formi gracili, ramis inequalibus; dentibus lateralibus brevibus, trigonis, compressis ; sinu siphonali propé centrum valve obducto. Long. 17; alt. 18; lat. 14 poll. Had. New Zealand. The external appearance is rather that of a rude Venus, and has fewer angularities than any other Mactra. It is also peculiar for its very wide gape. Macrra cuneota. ‘TT. parva, crassiuscula, rudis, ovato-cune- ata, albida, epidermide stramineo induta, concentricé striata ; umbonibus submedianis, tumidis, acutis, anteversis ; latere antico angustato, subacuto; latere siphonali breviori, tumidiori, subtruncato: area cardinalis minima; fovea ligamentali indis- 76 tincta ; dente V-formi conspicuo; dentibus lateralibus curtis, elevatis ; sinu siphonali minimo, quadrantem teste solum tran- seunte. Long. $; alt. 3; lat. 3; poll. Hab. Callao. In most of its characters it corresponds with our M. lateralis ; but in this shell it is the posterior end which is shortest and broadest, while the reverse is the case in that species. Macrra marcipa. ‘T. ventricosa, ovato-triangularis, cretacea, epidermide tenui stramineo induta; umbonibus medianis, tumi- dis, remotis, vix anteversis; latere antico breviori, rotundato ; latere siphonali subtriangulato, acuto; margine ventrali arcuato: fovea ligamentalis ampla; dente V-formi parvo, prominente ; dentibus lateralibus crassis, parum elevatis: interior cretacea ; sinu siphonali parvo, trientem teste attingente. Long. 22; alt. 24; lat. 14 poll. Hab. Orange Harbor. This species has precisely the form of M. lactea, but is a much more solid and rude shell, wanting also the decided dorsal angularities of the umbones. Macrra Fatcata. Testa magna, transversa, ovato-trigona, inequilateralis, convexiuscula, modicé hians, albida, epidermide fulvo, nitido, concentricé rugoso induta; umbonibus acutis, approximatis ; latere antico acuminato; latere siphonali late rotundato, sub-truncato; margine dorsali recto; area dorsali planulata, lanceolata; margine ventrali leniter arcuato: area cardinalis ampla ; fossa ligamentali magna, dente V-formi parvo, crasso; dentibus lateralibus compressis, quorum antico valvz dextre bilobato: interior lactea; sinu siphonali angusto, elon- gato, spatulato. Long. 32; alt. 21; lat. 14 poll. Hab. Puget Sound, Oregon. This fine species compares best with M. Brasiliana and M. ovalis. Its external form corresponds closely with the former, while the narrow siphonal sinus and the hinge closely resemble the latter. The bilobed lateral tooth is quite peculiar. Lurraria capax. Testa magnifica, ventricosa, ovato-rotun- data, anticé rotundata, posticé sub-triangularis, truncata, valdé hians, concentricé undulato-striata, epidermide luteo-viridi (post costam medianum radiatim corrugato) induta; umbonibus tumi- dis, incumbentibus, attigentibus: cardo validus ; fovea lata, ob- liqué triangulari; dente cardinali crasso, erecto, plicato, basi 717 appendiculato; dentibus lateralibus compressis, conspicuis: in- terior calcarea; sinu siphonali linguiformi, dimidiam longitudinis teste attigente. Long. 53; alt. 4; lat. 3 poll. Hab. Puget Sound. No other species approaches this in size and capacity. MEsopESMA muUNDA. ‘T. parva, solidula, convexiuscula, ovato-triangularis, levis, epidermide stramineo induta; natibus post-medianis, acutis ; margine dorsali vix arcuato, posticé subito declivi; latere antico angustato, acuto; latere postico rotundato ; margine ventrali valdé arcuato: interior flavescens, cicatricibus impressis: cardo dentibus validis instructus. Long. 2; alt. 2; lat. <3, poll. Hab. Mangsi Island. Distinguished from M. striata by its more compressed, less angular form, its short, broad, rounded anterior end, there being no angle except at the beaks, and by its smooth surface. Panpora cistuLA. Testa solida, alba, valdé inequilateralis, falciformis, anticé rotundata, posticé angustata, truncata: valva plana tenuis, submargaritacea, concentricé undulata ; margine dor- sali subrecto, laté inflecto, unidentato, dente brevi, elevato, trian- gulari munito: valva concava solidior, ossea, tumida, posticé costato-angulata, edentula, fossa ligamentali et costa anticali instructa; margine dorsali concavo; margine ventrali valdé arcuato. Long. 14; lat. 4; alt. 1), poll. Hab. East Pata- gonia. More solid, more concave, and more elongated than any species [ am acquainted with. The upper valve of a small speci- men from the same locality is semicircular, but more acute anteriorly than posteriorly. OsTEODESMA BRACTEATA. Testa parva, tenuis, transversa,. inequilateralis, ovato-falcata, ventricosa, margaritacea, epider- mide fusco radiatim creberrimé rugoso induta; latere antico rotundato; latere siphonali duplo longiore, triangulari, subad- scendente, truncato; margine dorsali recto; margine ventrali arcuato, sub-pendulo: interior deaurata. Long. 2; alt. 3 poll. Hab. Puget Sound. It is with some doubt that I separate this from O. hyalina; but if its gilded nacre, its dusky colored, very numerously folded epidermis, and the ventricose, pouched form of the pos- 78 terior basal portion prove constant, there can be no room for doubt. OstTEopEsMA Brasitiensis (Couthouy, MS.) ‘Testa fragilis, elongato-ovata, anticé ventricosa et truncata, posticé compressa, concentricé undulata, epidermide flavicante induta; umbonibus ante-medianis, tumidis, approximatis ; margine dorsali feré rec- tilineari; margine ventrali arcuato: interior margaritacea: ossi- culum parvum, oblongum. Long. 14; alt. 2 poll. Hab. Rio Janeiro. Its elongated, leguminous form, and its large size, plainly characterize it. AMPHIDESMA cROcEUM. ‘Testa maxima, crassa, calcarea, ine- quivalvis, subcircularis, posticé hiantula et sub-truncata, liris concentricis reflexis interdum divaricatis arata, radiatim stri- ata; umbonibus sub-medianis, eminentibus, acutis, contiguis: intus crocea; cardo validus, fovea ligamentali ampla, profunda ; dentibus rosaceis. Long. 32; alt. 34; lat. 14 poll. Hab. Callao? Very distinct from all other described species, unless it may be A. solidum, Gray; from comparison with his description alone, this must be different. Erycina (Poronta) ovata. T. parva, alba, nitida, concen- tricé striata, ovato-ventricosa, inequilateralis; margine cardinali arcuata, umbonibus parvis, antemedianis; margine ventrali parum arcuata; latere antico truncato; latere postico rotundato; valve dextre dente cardinali erecto, bifido, fovea ligamentali parva ; v. s. dente integro; intus alba. Long. 5%; alt. 5 lat. 2 poll. Hab. Sandwich Islands. Differs from the succeeding species in its smaller size, more inequilateral, ovate-ventricose form, shining surface, and delicate hinge. - Erycina (Ketira) quaprata. ‘Testa parva, tenuis, ventri- cosa, ad angulos rotundata, concentricé et concinné striata, epi- dermide straminea induta; umbonibus feré medianis, tumidis, anteversis : area cardinalis ampliata, in valva sinistra tridentata (dente mediano subulato, sub umbone sito; alteris elongatis, com- pressis) in valva dextra bidentata ; fossa ligamentali triangulari, declivi. Long. 4; alt. 2; lat. 2 poll. Hab. Feejee Islands ? 79 This is a very large species of its type, and closely resembles, in size and shape, Cyclas similis. TELLINA TITHONIA. ‘Testa transversa, oblonga, subequilat- eralis, zonis et radiis diversis albis et roseis picta, concentricé lirata, liris posticé lamellosis ; latere antico semiovali; latere postico breviori, triangulari, ad apicem truncato ; plica profunda ; margine dorsali recto, declivi; interior incarnata, ad marginem roseo-maculata, versus apicem lutea; dentibus lateralibus satis conspicuis. Long. 12; alt. 3 poll. Hab. Sooloo Sea. Intermediate between T. rastellum and T. pulchella, being smaller and of the same shape as the former, but without its peculiar squamous sculpture of the right valve ; and being larger and more roseate than the latter, and from a very different local- ity. Itis colored like T. virgata, externally, but is more slender, and deeply colored within also. TELLINA LauTa. ‘T’. parva, solidiuscula, oblonga, inequivalvis, umbonibus ad trientem posticalem longitudinis sitis; latere antico semiovali, margine dorsali recto, latere postico triangulari ad apicem truncato; valvis concentricé liratis (liris striis obliquis anticé decussatis) albis, roseo quadri-radiatis et anticé lineis araneosis rosaceis ornatis ; flexura inconspicua : cardo den- tibus lateralibus carens. Long. 7%; alt. 34 poll. Hab. ? About the size, form, and coloring of T. Valtonis, Hanley, which appears to be a polished, pellucid shell, with no peculiarity of sculpture. It is very near to T. rhomboides, Quoy, which is said to have fine concentric striz anteriorly, that become obsolete at the middle. TELLINA compTa. ‘T. parva, transversa, inequilateralis, alba vel rubescens, quater roseo-radiata ; umbonibus ad trientem pos- ticum sitis; latere antico semi-elliptico; latere siphonali trian- gulari apice truncato, vix insculpto, plicato ; marginibus (scilicet dorsali et ventrali,) feré parallelis; disco striis concentricis et striis obliquis arato ; dentibus lateralibus nullis ; intus ex albo fla- vescens,radiatim striata. Long. 3; alt. 4; lat. 4 poll. Had. Almost precisely like T. decora, which has a well marked lateral tooth, and comes from the West Indies. T. rhomboides, Quoy, varies chiefly in the more partial development of oblique strie. The coloring is less brilliant, and the strie more delicate, 6U more oblique, and cover a greater proportion of the valve than T. lauta. TELLINA ExcuLTA. ‘T. transversa, solida, trigono-elliptica, tumida, nitida, albida, rosacevo vix radiata, concentricé liris tenu- ibus et radiatim striis tenuissimis insculpta; liris in valvé dextra postice lamellosis et interruptis, squamas simulantibus ; in valve sinistree disco valdé obliquis; umbonibus postmedianis ; latere anticali semi-elliptica ; latere posticali subtriangulari, ad apicem valdé truncato; flexura insigni, haud lamellosa : cavositas flava ; dentibus valve dextre conspicuis. Long. 2; alt. 1; lat. = poll. Hab. Feejee Islands. Looks like a variety of T. rastellum, Hanley, (T. Philippii, Anton,) but is proportionally shorter, the beaks are farther back, and the disc is more tumid anteriorly. The lamine of the right valve are everywhere more delicate, and nearly absent on the anterior half; the scales are confined to the valley in front of the fold. The oblique grooving on the left valve is very decided. TELLINA CONCENTRICA. ‘'T. transversa, ovato-trigona, tenuis, convexiuscula, albida, haud nitida, ubique concentricé lamellosa, et radiatim inter lamellas subtilissimé striata ; lamellis eequalibus, acutis, confertis, reflexis; umbonibus vix post-medianis: pars antica semi-elliptica; margine dorsali vix declivi: pars postica sub-triangularis ; margine dorsali valdé declivi, sub-arcuato, valdé excavato, ad apicem truncato; flexura conspicua, haud lamellosa : intus alba. Long. 13; alt. 13; lat. $ poll. Had. Feejee Islands. Like T. capsoides, Lam., but less triangular, the anterior por- tion more tumid, and its dorsal slope arcuate; the flexure is more decided; the concentric lamine decided and uniform throughout ; the radiating striae are very delicate, and found equally before and behind, not crossing the concentric lamine. It is much like T. pristis, Lam., except in form, and its anterior margin, which is represented as serrated. ‘TELLINA PERULA. ‘T. parvula, solidiuscula, ventricosa, rotun- dato-triangularis, eburnea, concentricé et remote striatula ; um- bonibus tumidis, submedianis, radiis binis lacteis ornatis ; margin- ibus dorsalibus valdé declivibus ; latere antico rotundato, tumido ; 81 latere siphonali brevi, valdé flexuoso, infra angulato ; margine ventrali pendulo ; cavositatis limbo albo, disco sulphureo ; denti- bus lateralibus conspicuis. Long. 3; alt. 2; lat. 5%; poll. Had. Feejee Islands. Very much like T. casta, Hanley, which is described as pel- lucid, and no mention is made of the yellow color of the interior, or of the two white umbonal radiations. One specimen is tinted and zoned with rose red, and the interior is wholly red, preserv- ing however, the umbonal white rays. PsAMMOBIA FLoRIDA. Testa transversa, oblonga, tenera, polita, purpurascens, posticé albo-radiata; limbo epidermide flavo-virescente induto ; natibus postmedianis, inconspicuis ; latere antico semi-elliptico, apice supra-mediano; latere siphonali angustato, acuté rotundato, apice infra mediano; margine ven- trali rectiusculo: interior incarnata; sinu siphonali angusto, prelongo ; cardine dentibus duobus minutis divaricantibus in utraque valva instructo. Long. 14; alt. 3% poll. Hab. Illa- warra, N. S. Wales. A shell closely resembling in structure and exterior coloring Machera costata. It has the form of P. vespertina, except that the beaks are removed much farther backwards. Donax paLuipus. Testa transversa, ovato-triangularis, solidula, convexa, exalbida, posticé concentricé sulculata, anticé polita ; umbonibus postmedianis ; margine dorsali utrinque declivi (pre- cipué retrorsum) convexiusculo ; latere antico semi-ovali, sensim angustato, ad apicem rotundato; latere postico sub-triangulari, rotundato; margine ventrali valdé arcuato, posticé sinuato: interior eburnea, incrassata ; dentibus modicis. Long. 2; alt. 4; lat. 4 poll. Hab. Singapore. The outlines are all gently rounded, and the shell is other- wise characterized by its dead, sallow-white color, and its sculp- ture. Donax tInctus. Testa crassa, ovato-trigona, cuneata, ver- sicolor, scilicet incarnata, straminea vel violacea, striis lamellosis concentricis posticé flexuosis insculpta; umbonibus feré medi- anis; margine interiori integro; dente laterali valido; dente antico obsoleto. Long. 37; alt. 7%; lat. 2 poll. Hab. It comes near to D. cuneata, but is still more like Mesodesma 11 82 striata in general aspect. ‘The specimens I have examined vary greatly in color, but correspond in form, sculpture, and other characters. Donax crocatus. Testa parva, tenuis, transversa, ovato-tri- angularis, inequilateralis, diluté crocea, concentricé lamelloso- suleata ; latere antico semi-ovato; latere postico breviori, rotun- dato-truncato; margine ventrali lenté arcuato: intus flavida, nitida ; cardine valido. Long. 2; alt. 4; lat. 3; poll. Had. Mangsi Island. This small species is sufficiently well characterized, somewhat like D. scalpellum. Lucina RAMULOSA. Testa crassa, scabra, lenticularis, vix obliqua, albida, costulis radiantibus crebré divaricantibus et filis continuis concentricis crebris insculpta ; umbonibus elevatis acutis antrorsum versis; lunula excayata, haud insculpta: ca- vositas albida vel citrina, incrassata; cicatricibus profundis ; limbo concinné radiato-striato ; cardinis dentibus lateralibus vali- dis. Diam. 1; lat. 4 poll. Had. Paumotu Islands. As much allied to L. tigerina or L. interrupta as to any described species, but is more circular, more solid, and the peculiar divergence of the radiating ridges, somewhat like Cytherea divaricata, are sufficiently characteristic. Lucinaincutta. Testa tenuis, lenticularis, retrorsum admodum obliqua, stramineo-albida, concentricé striolata ; natibus medianis, elevatis, acutis, contiguis, antrorsum versis; latere antico superné subangulato, excavato ; latere postico rotundato, infra paululum producto: cavositas albida; cicatricibus perspicuis : cardo invalidus ; dentibus apicalibus duobus divaricatis, laterali- bus nullis. Diam. 2; lat. 2 poll. Hab. New Zealand. Very much like L. filan, but much smaller, more solid, and less glossy. The anterior end is less developed, and the bulk of the shell, as well as its most depending portion, is behind, instead of before, the beaks. LuctNa vesicuLa. Testa tenuis, sub-globosa, vix obliqua, pal- lidé flavescens, concentricé tenui-striata, radiatim obsoleté stri- ata: natibus submedianis, elevatis, anteversis; margine dorsali anticé excavato, demum subalato, posticé rectiusculo; peripheria reliqua circulari ; cardine edentulo; ligamento in fossam obli- 83 quam internam posito: concavitas flavescens, punctis nitidis notata. Long. 14; alt. 14; lat. % poll. Hab. Tongataboo. Its surface is like L. filan, but its form is:more ventricose, and its dorsal margin is much less sloping, somewhat alate ; and this is one of its most striking peculiarities. In form it is more like L. undata, except that the reverse extremities correspond. Lucina LENTICULA. ‘Testa parva, solidula, lenticularis, rotun- data, convexiuscula, concentricé imbricato-striata, etiam striis radiantibus decussata, alba, epidermide fuliginoso hic illic induta ; umbonibus feré medianis, prominulis: cardo dentibus apicalibus et Jateralibus tenuibus instructus: intus incrassata, alba ; mar- gine crenulato; impressionibus profundis. Diam. 2; lat. 335 poll. Hab. Coast of Patagonia? This little shell has rather the aspect of an Astarte or Cyprina, and would be considered as such but for its lateral hinge teeth. Carpira veNtricosa. ‘Testa solida, ventricosa, ovato-trigona vix obliqua, radiatim 18-20 costata, costis concentricé subno- dosis, interstitiis angustis, epidermide fuliginoso, villoso induta ; umbonibus submedianis, obtusis ; intus alba; margine profundé crenulato; dente cardinali valve dextree, elevato, crasso, trian- gulari. Lat. 2; alt. 2; lat. 4 poll. Had. Puget Sound. Compared with C. borealis, Conr., it is thicker, less transverse, more tumid at the beaks, which are less recurved ; the ribs are barred; the cardinal tooth is short, triangular (not long falcate) and detached from the margin; the crenulations of the margin deeper. CarpiTa PRocERS. ‘Testa elevata, ovato-triangularis, radiatim ad 15-sulcata, (interstitiis convexiusculis) concentricé striata, epidermide fulvo induta; apice mediano, acuto, obliquo; cardo dente unico triangulari obliquo, instructus ; margine interno sul- cato. Long. 2; alt. 2; lat. 4 poll. Hab. Rio Negro, Pata- gonia. It has a more compressed and less oblique form than C. bo- realis, and fewer ribs. The right valve only was obtained. CaRDIUM BLANDUM. ‘Testa parva, tenuis, subcircularis, vix transversa, ventricosa, posticé subtruncata, cinereo-rufescens, costis planulatis radiantibus ad 40 insculpta, sulco angusto 84 sejunctis, et liris concentricis tenuissimis, arcuatis, reflexis, decussatis : umbonibus medianis, tumidis, denudatis, eburneis : cavositas albida; margine interno crenulato; cardine debili. Long. 1; alt. 4; lat. 2 poll. Hab. Puget Sound. I at first supposed this to be the young of C. Californianum, Conr., but find that there are about ten more ribs, and the sculp- ture is quite different. It seems to be the analogue of C. Ice- landicum, which has acute ribs and a peculiar fringed epidermis. Its form varies from circular to transversely oval. CyprIcaRDIA RoSEA. ‘Testa transversa, oblonga, tenuis, anticé radiatim tenui-striata, posticé concentricé squamoso-striata: um- bonibus valdé anticalibus, acutis; latere antico brevi, citd an- gustato, ad apicem truncato, albido; latere postico oblongo, ad apicem truncato, rosaceo; margine dorsali vix arcuato ; margine ventrali recto: intus rosacea ; cardo debilis, dentibus feré longitu- dinalibus. Long. 12; alt. 2; lat. 2 poll. Hab. Feejee Islands. ~~Allied to C. solenoides, Reeve, which is much more elongated, has purplish rays, and is only tinted purple posteriorly, within. C. coralliophaga, Reeve, is somewhat more elongated, more laminated posteriorly, and radiate striate, and the edge only, tinted rose-red within. ARTHEMIS LAMBATA. ‘Testa tenuis, cordato-orbicularis, lenti- cularis, sordidé alba, radiatim tenuissim€ striata et liris concin- nis concentricis, posticé laminosis insculpta ; natibus sub-media- nis elevatis, acutis, anteversis; margine dorsali postico declivi, vix arcuato: lunula profunda, lanceolato-cordata : interior albida ; sinu siphonali obliquo, acuto; cardine dentibus tribus divergen- tibus in utraque valva. Long. 1; alt. 35; lat. 5 poll. Had. Bay of Islands. A. lincta is more elevated, has the ridges about twice as large, is destitute of radiating striw, is more solid, and has the ligament margin excavated, and the siphonal sinus is narrower and more acute. VeNuS TOREUMA. ‘Testa ventricosa, subglobosa, vix obliqua, straminea lituris angulatis rufis picta, concentricé porcata ; liris numerosis ad lateros granulosis, acutis, crenulatis ; interstitlis minutissimé striatis, et lineolis angulatis pallidis quasi indentatis ; 85 natibus sub-medianis, tumidis, obliquis; lunula profunda, late cordata: intus pallida ; margine crenulato: cardo validus; dente postico valve sinistree longitudinali; dente antico biramoso. Long. 12; alt. 1}; lat. 39, poll. Hab. Mangsi Island. In general characters it is allied to V. verrucosa, but is more orbicular, more tumid, and its sculpture far more delicate and elaborate, besides being beautifully ornamented with tent-like markings in the intercostal spaces. VENUS CALCAREA. ‘Testa ovato-rotundata, alba, crassa, inequi- lateralis, posticé subtruncata, striis concentricis, irregularibus, remotis, lamellosis signata ; natibus acutis, attigentibus; lunula duplici, ovato-lanceolata ; intus candidissima; margine crenu- lato. Long. 23; alt. 2; lat. 12 poll. Hab. New Zealand. Venus ricipA. Testa solida, transversa, ovato-ventricosa, inequilateralis, desuper visa acuté ovalis, sordidé alba, striis con- centricis reflexis, utroque laminosis, et striis crassis radiantibus decussata; decussationibus anterioribus punctatis; umbonibus elevatis, anteversis, contiguis: lunula lata, vix circumscripta : latere antico angustato, rotundato ; latere postico laté et oblique truncato; margine dorsali rectiusculo; cardine in dextra valva dentibus duobus fissis, in valva sinistra dente unico fisso: intus porcellana ; margine crenulato. Long. 2; alt. 18; lat. 14. poll. Hab. Puget Sound; Straits of De Fuca. Has the form and general aspect of Saxtdomus Nuttalli, Con- rad, in which the hinge teeth are quite different, and there are no traces of diverging lines. The sculpture is much finer than in V. Dombeyana, and more like that of V. decussata. It varies considerably in its size and proportions, being often much more expanded. One specimen measured in length 382; height 23 ; breadth 1+ inches. Arca sopria. ‘Testa transversa, inequilateralis, rhomboidea; alba, costulis numerosis radiantibus, posticis majoribus, rugosis, instructa, et undulis remotis concentricis subreticulata ; latere antico angusto, rectangulari, in marginem ventralem posticé desinente ; latere postico obliqué truncato, ad apicem acuto ; umbonibus elevatis, angulatis ; area cardinali angusta lanceolata ; cardo dentibus ad octo utrinque instructus. Long. #; alt. % ; lat. ¢5 poll. Hab. ? ee 86 It has the outline of A. Deshaysti, but is much smaller, more slender, more numerously ribbed, less acute posteriorly. CycLas EGREGIA. 'T. ventricosa, transversa, oblonga, sub- equilateralis, concentricé tenui-lirata ; umbonibus parum elevatis, tumidis ; epidermide viridi-corneo, fusco-zonato; plerumque C. cornee similis. Long. 3; alt. 8; lat. $ poll. Hab. New South Wales ? It is larger, more rounded in outline, and more globose in form than C. cornea. ‘The epidermis is less glistening, of a deeper green, and exhibits no traces of radiations. The liga- ment is shorter and more prominent. The beaks, hinge, and furrowing are nearly the same in both. CycLas PATELLA. ‘T. parva, tenuis, rotundato-ovalis, lenticu- laris, modicé cavata, concentricé exiliter suleata, epidermide luteo-viridi induta; umbonibus medianis, rotundatis, haud eleva- _tis: intus lactea: cardo dentibus duobus minutis cardinalibus instructus ; dentibus lateralibus remotis, validis. Long. 33 alt. 2; lat. 3 poll. Hab. Oregon. This is to be compared with C. cornea on account of the peculiar rounded form of the dorsal region, the umbones not rising so as to interfere with the general outline. The cavity of the beaks is still more shallow, the sulecation coarser, and the color yellowish rather than green, and on the whole the shell is more dense and larger. CyrENna DEBILIS. T. parva, tenuis, transversé ovata, posticeé ampliata et subtruncata, sub-equilateralis, concentricé liris con- fertis, sub-reflexis arata; epidermide nitido, superné olivaceo induta; umbonibus parum elevatis, erosis, absque lunula: intus violaceo-albida ; dentibus cardinalibus inconspicuis, dentibus Jateralibus elongatis, striatis. Long. 3§3 alt. 345; lat. 4 poll. Hab. New Holland ? Most like C. pusilla, but has no areola in front of the beaks, is less orbicular, and somewhat larger. In general it resembles a Cyclas. Awnopon ctauca. TT. transversa, elongato-ovata, ventricosa, anticé rotundata, posticé obliqué rotundato et costa obliqua sub- marginali munita; margine dorsali arcuato; margine ventrali 87 concavo; umbonibus antemedianis, acutis, parum elevatis ; epi- dermide olivaceo-glaucescente fluctuatim corrugato induta: ca- vositas argentea ; disco salmonaceo: cardo edentulus vel potius papilla cardinali in valva dextra instructus. Long. 13; alt. 3; lat. } poll. Hab. Peru. The peculiar dead rusty-green color of the epidermis, with its loop-like corrugations may serve as distinctive marks. It would come under the genus Monocondylea of D’Orbigny. Awnopon FEMINALIS. T. solidula, transversa, ovato-triangu- laris, anticé acuminata, margine postico in margine dorsali con- tinuo, arcuato; margine ventrali recto; apice rectangulari; umbonibus inconspicuis, erosis, anticis, declivitate posticali obtusé angulato; epidermide lamelloso, piceo: margarita pur- purascens; limbo argenteo; dente cardinali obsoleto. Long. 24; alt. 14; lat. 2 poll. Had. Oregon. At first this was supposed to be the young of A. angulata, Lea ; but it proves different in several constant characters, be- sides its widely remote habitat. It is much smaller and thinner, its surface rude and dusky, instead of smooth and green; its outlines are all curves instead of right lines ;_ the dorsal and ter- minal outlines form a continuous curve instead of a distinct angle ; the beaks are more anterior and the cardinal apophysis is never found in A. angulata, while it is constant in this. Anopon coenata. T. fragilis, transversa, oblongo-ovata ; margine dorsali brevi, recto; margine ventrali arcuato; latere antico rotundato ; latere postico obliqué truncato, ad apicem rotun- dato ; disco turgido; epidermide virescente, nitido; umbonibus antemedianis inconspicuis, undulatis: margarita livido-albida. Long. 3; alt. 14; lat. 1 poll. Had, Nisqually and near Fort Vancouver. Resembles small specimens of A. cygnea; but the dorsal margin is shorter, not continuously straight, and forming an abrupt angle above, anteriorly ; the posterior extremity is less acute and more nasute; the cavity of the beaks is also somewhat over-arched. Excepting the beaks, it is like A. fluviatilis. ALASMODON FaLcaTa. T. transversa, valdé inequilateralis, fal- cata, anticé rotundata, posticé deflecta, acuta, marginibus subpa- rallelis ; disco sub-excavato; umbonibus obtusis, erosis ; epider- 88 mide subfusco; dente cardinali in valva dextra elevato, trigono, in y. sinistraé longitudinali, compresso-triangulari; margarita purpurascente ; limbo argenteo. Long. 4; alt. 14; lat. 1 poll. Hab. Wallawalla, Oregon ; Sacramento River, California. Mr. Lea and others have regarded this as a variety of A. mar- garitifera ; but besides the uniformly peach-blossom nacre, the form is generally more arcuate, the exterior more waved, the color darker, the anterior tooth in the right valve is comparatively obsolete, longitudinally oblique and Jamellar in the young. Unio FaMEticus. ‘T. parva, tenuis, transversa, oblongo- ovata, convexiuscula, epidermide fusco-castaneo induta; mar- gine dorsali arcuato ; margine ventrali rectiusculo; latere antico angusto ; latere postico obliqué rotundato; umbonibus haud ele- vatis ad quadrantem anteriorem sitis ; dente cardinali obliquo, com- presso, valido ; dente laterali brevi, recto: margaritasubpurpurea. Long. 1}: alt. 2; lat. 2 poll. Hab. Wallawalla, Oregon. A small and rather remarkable species, like a miniature U. complanatus. It is more equilateral, has no dorsal angles, the dorsal and ventral margins diverge more, and the cardinal teeth are more oblique. Unio tutuLentus. T. transversa, compressa, sub-falcata, valdé inequilateralis, concentricé undulato-striata interdum no- dosa vel sursum rugosa, fusco-virescens ; lateribus rotundatis ; marginibus sub-parallelis; umbonibus prominulis, erosis; denti- bus cardinalibus obliquis, compressis, in valva dextra_bifidis ; dentibus lateralibus elongatis, compressis, rectis: margarita argentata ; limbo anticé incrassato. Long. 2; alt. 1; lat. 2 poll. Hab. New Zealand. Resembles U. monodon, and slender specimens of U. compla- natus. It is nota fragile shell, and the peculiar tubercular waves along its slope, the scattered corrugations on its disc, and its peculiar color, are its best diagnostic marks. ‘These are usually concealed by a thick coat of black earth. It is said to come from streams in the vicinity of chalybeate springs. Unio prorucus. T. transversa, elongato-ovalis, ventricosa, epidermide fusco-castaneo, concentricé undato-striato, radiatim obsoleté plicato induta; margine ventrali vix arcuato ; margine dorsali sub-recto ; latere antico rotundato; latere postico oblique 69 truncato, ad apicem obtuso; umbonibus ante-medianis, elevatis, erosis; dentibus cardinalibus obliquis, elongatis, compressis ; dentibus lateralibus remotis, sub-arcuatis : margarita livido-albida. Long. 22; lat. %; alt. 14 poll. Hab. Hunter’s River, N. 8. Wales. Slender varieties have much the appearance of the more expanded forms of U. lutulentus. It is more tumid, the beaks more elevated and more central, the hinge more curved, the cardinal tooth of the right valve more oblique and distinctly bifid, the lateral tooth of the left valve less extensively cleft, and I cannot find that it is ever nodular along the posterior slope. Unio verecunnbus. T. tenuis, inequilateralis, transversa, ova- to-oblonga, convexiuscula, luteo-olivacea ; margine dorsali recto ; margine ventrali arcuato ; latere antico rotundato ; latere pos- tico obliqué rotundato; natibus prominulis, acutis, undulatis, erosis : cardo exilis; dentibus tenuibus longitudinalibus: marga- bs tita salmonaceo-purpurea. Long. 12; alt. 14; lat. 3 poll. Hab. ~, 29 Manila. Much like U. Bengalensis and U. foliaceus. In the former, both ends of the ventral margin are angular, the posterior side is dilated and angular at tip, and the interior is less bright red. The form of this is rather elliptical than ovate. U. foliaceus is smaller, thinner, compressed, and has a plumbaginous nacre. Unto porsuosus. ‘T. transversa, retrorsum ampliata, inequi- lateralis, compressa, castanea; latere antico circulari; latere postico obliqué rotundato; margine dorsali recto; umbonibus pro-eminentibus, antrorsum concentricé costato-undulatis, retror- sum nodoso-fluctuatis: dente cardinali perobliquo, elongato, compresso ; dente laterali recto: margarita ex albo-ccerulescens, livido ad umbones tincta. Long. 14; alt. 3; lat. 4 poll. Hab. Eastern Asia ? Allied to U. Murchisonianus, Lea; it is more widened poste- teriorly, more compressed, not sinuate beneath, thinner. AvicuLa vipua. ‘T. parva, tenuis, dolabriformis, vix obliqua, Th f> per-inequilateralis, mutica, nitens, ex viridi purpurascens, deinde nigra, albo obscuré radiata: valva dextra planulata : valva sinis- tra convexa, ecaudata : auricula parva, triangularis ; fissura parva, superficialis, edentata : margarita ex argenteo violacescens ; 12 A 90 limbo lato, nigro. Long. 1}; alt. 2; lat. 38; poll. Hab. Feejee Islands. In the early stages the color is grass green, then passing through dark purple to coal black. It is remarkable for the per- fect flatness of one valve. Its destitution of hinge teeth brings it in Lamarck’s genus Meleagrina. AvicuLa nickA. Testa mutica, inequivalvis, ecaudata, eden- tula, fusca, antrorsum lobata; valva dextra convexiuscula, pos- ticé integer, anticé profundé emarginata; auricula triangulari, crenulata: valva sinistra convexior, postice, profundeé emargin- ata: margarita ex argenteo ccerulescens; limbo lato, fusco. Alt. 2; long. 12; lat. 3 poll. Dredged at Singapore. More like A. margaritifera in form than any other, but is less retuse, destitute of scales, and having its substance a plain pur- plish black. It belongs to the section Meleagrina. AvicuLa macunaTa. ‘Testa solidula, ventricosa, per-inequi- lateralis, obliqué rotundata, ecaudata; margine caudali parum producto ; extus calcarea, nigro radiata : auricula triangularis, cre- nulata; fissura profunda: margarita pallidé aurea; limbo cal- careo lato, vitreo, albo et nigro radiato: margo cardinalis latus, incrassatus ; dente cardinali papilliformi ; dente laterali brevi, posticé incrassato et deflecto, in valva dextra bifurcato ; cicatrice musculari reniformi, profundo. Long. 13; alt. 13; lat. 3 poll. Hab. Tutuilla, Samoa Islands. The peculiar magnesian external coating, radiated with dark purple, the golden nacre, and the porcelain-like marbled limbus, make this a strongly marked species. Avicuta Fucata. 'T. saccata, retrorsum obliqua, per-inequi- valvis, scabra, rosaceo et flavido radiatim picta: auricula pre- grandis, elongata; fissura byssali profunda: valva dextra con- vexiuscula; angulo postico acuto: valva sinistra ventricosa, anticé integra, acutangularis, plicad magna munita: cardo denti- bus conspicuis: margarita argentea, violacescens ; limbo corti- cali cretaceo, croceo et rosaceo radiato. Long. 2; alt. 2h3 lat. 3. Had. Feejee Islands. ? A small species, colored much like A. margaritifera ; but the wing curves in the opposite direction, and it is provided with a 91 well-developed auricle, characters which could not be ascribed simply to immaturity. AvicuLa turipa. T. squamosa, vix obliqua, feré ecaudata, solidula, coloribus rosaceis, viridibus et flavidis radiatim fucata : valva dextra posticé vix sinuata, convexa ; auricula lata, triangu- laris ; fissura byssica haud profunda: valva sinistra ventricosa, tuberculo magno subcaudali munita, posticé integra: margarita argentea ; limbo corticali corneo et nigro marmorato. Long. 24 ; alt. 24; lat. 2 poll. Hab. New Zealand. In form it resembles A. fucata; but its smoother surface, difference of coloration both without and within, and its much more elongated auricle, are quite distinctive. ‘The young stages of this shell are exceedingly beautiful, being rose red, with a sort of superficial radiation of cream-color. AvicuLa GLaBra. ‘T. tenuis, semi-elliptica, vix obliqua, laté caudata, glabra, ad peripheriam lamellata, virescens, albo-radiata : valva dextra planiuscula; auricula latior quam longa: valva sinistra ventricosa, anticé integra, acutangula: cardinis dentibus obsoletis: margarita argentea; limbo corticali livido-corneo. Long. 22; alt. 23; lat. $ poll. Hab. New Zealand. Outline much as in A. fucata, but the caudal region is much more compressed. Its smooth surface and widely different co- loration are easily recognized. ‘The white radiations are opaque, and have a superficial appearance. CRENATULA PERGAMINEA. ‘T. membranacea, obliquissima, subfalcata, concentricé laminoso-fibrosa, albida, lineis lacteis radiata; margine dorsali recto, umbonibus tumidis, acutis, ad trientem anteriorem sitis ; latere antico arcuato et cum margine ventrali continuo ; latere postico obliqué truncato ; area cardinal wane lat. $ poll. Had. -Feejee Islands. None of the species already described agree with this in color texture, or form. Its structure is very delicate and unresisting, almost fibrous at its edge. PERNA ARGILLACEA. ‘TT’. solidula, mutica, compressa, elongata, anticé dilatata, posticé subrecta, ex luteo alutacea, hic illic nigri- cans; apice adunco: fissura byssali angusta, lanceolata: intus l all ne ’ 92 livescens : area cardinalis curta, obliqua, triangularis, sulcis obli- quis ad 8 arata: fovea apicalis profunda. Long. 23; alt. 3; lat. 3 poll. Had. ? The resemblance to the common P. ephippium of the West Indies is very great. It differs chiefly in the clay-colored exte- rior, and in having the byssal instead of the opposite side dilated ; the muscular scar is also smaller. Perna Torva. TT. rudis, crassa, inequivalvis, concentricé lamellata, cinerea, obliqua, trapezoidea ; latere byssali dilatato, semicirculari ; sinu byssali profundo; apice adunco ; latere pos- tico rectilineari, obliquo, producto; margine cardinali obliquo : area cardinalis triangularis, sulcis obliquis ad sex arata: marga- rita ex argenteo-purpurascens; limbo lato, retro dilatato. Long. 13; alt. 12; lat. 2 poll. Hab. Sandwich Islands. The obliquity of this species and the small number of its car- dinal sulci are among its most prominent characters. Perna ErEmitTA. TT. fragilis, exaluminata, variabilis, dola- brata, vulsellata, unguiformis, pectiniformis et omnimodé dis- torta, plerumque radiatim rugoso-striata et in junioribus rufo- lineata; antrorsum plus minusve arcuata: margarita argentea ; limbo corticali ampliato, foliaceo, stramineo, vitreo: margine cardinali feré horizontali, 6-8 sulcato ; fissura byssali profunda. Long. 2; alt. 175; lat. poll. Inhabits Carlshotf Island, Pau- motu Group. This shell, though so variable as to elude all terms of descrip- tion, is still very distinct from all others, in all its forms. It seems to acquire its multiform shapes from the cavities in coral where it resides. Young or well protected specimens are sculp- tured by delicate radiating ramose ribs bearing minute scales. PERNA NANA. ‘T.. parva, crassa, subquadrata, adunca, lamel- losa, extus nigra; margine ventrali sinuato ; angulo infero-posteri- ori rotundato; latere postico sinuato: area cardinali lata, 6-sul- cata; fissura byssali ampla, trigonalis: margarita plumbaginea ; limbo corticali angusto, pallido. Long. 23; alt. #5 lat. } poll. Hab. Feejee Islands ; under stones. Drayton. The solidity and color of this little species will not admit of its being confounded with any other species. It bears the marks of mature age. 93 Pinna senTicosa. T. cuneata, sub-inflata, posticé oblique rotundata, purpureo-nigricans ; margine dorsali sub-ascendente ; margine ventrali propé apicem pendulo : area triangularis superior costulis ad 7 radiantibus squamigeris (squamis semi-tubulosis) instructa; area inferior striis incrementalibus solum notata. Long. 43; alt. 23; lat. 1 poll. Hab. New Zealand. Its general appearance is that of P. seminuda; but it is smaller, much darker, the ventral margin is less arcuated, and the scales much less numerous and regular. Mytitus (Modiola) FLaBELLATus. ‘T. transversa, elongata, trapezoidea, trifariam cuneata ; umbonibus minimé terminalibus, acutis, attigentibus ; declivitate umbonali ventricoso, angulato ; marginibus rectilinearibus ; latere postico obliqué truncato, haud angulato; epidermide anticé nitido, exusto, posticé flavo-viridi, flosculis rigido: intus exalbida. Long. 4; alt. 12; lat. 14 poll. Hab. Puget Sound, Oregon. A very well marked species, more than usually cuneate, and with the beaks quite remote from the summit. », 743, Mytitus (Modiola) arEotatus. ‘Testa transversa, ovato-elon- gata, incurvata, tumida ; umbonibus approximatis, angulatis, feré terminalibus; margine dorsali arcuato ; margine ventrali forni- cato, valdé hiante ; epidermide nitido, castaneo, portione antico- ventrali sulco limitato: intus alba, limbo dorsali purpurascente. Long. 2; alt. 14; lat. 1 poll. Had. New Zealand. Somewhat like M. vulgaris ; the beaks are nearly terminal, the byssal opening broader and nearer the beaks, the ventral margin arching inwards instead of outwards at this point; the epidermis is darker and more shining, and the nacre is different. Mytitus (Modiola) ueparicus. T. parva, elongata, ovato- triangularis, anticé angustata, ventricosa ; margine dorsali angu- lato; umbonibus acutis, angulatis ; epidermide tenui, livido- corneo, versus fastigium umbonalem flavescente; intus puni- cea, luteo-marginata. Long. 13; alt. 2; lat. 3 poll. Had. Fee- jee Islands. A small, elongated species, with its dorsal edge obtusely angu- lar, but best distinguished by its peculiar lurid exterior coloring, and its reddish molybdena-colored interior. 94 p- 344, MytiLus pyrirormis. ‘T. solida, elongata, ovato-trigona, ven- tricosa, rosacea, epidermide piceo induta; margine ventrali in- flecto, radiatim sulcato; fastigio umbonali tumido, concentricé undulato-striato : intus livescens ; cardine edentulo. Long. 34; alt. 12; lat. 13 poll. Had. South Seas. The similarity of the dorsal and ventral curves; its inflated ventral portion, its great lateral diameter, its peculiar coloration and striation are well marked. Mytitus pivaricatus. ‘T. ovato-triangularis, arcuata, preeter regionem byssicalem undique radiatim costato-sulcata, sulcis pro- fundis, remotis, interdum divaricantibus; apice peracuto, angu- lato; margine dorsali haud angulato, portione ligamentali arcuato ; margine ventrali recto ; epidermide luteo-corneo posticé fusces- cente; intus albida, posticé livescens. Long. 1,°5 ; alt. =3,; lat. 8 poll. Hab, China Seas. In general aspect it is like M. Magellanicus, but is more angu- lar, the grooves are deeper, more numerous and more generally distributed. The grooves are disposed as in M. hamatus, but are much larger. Mytitus aLcosus. T. transversa, subcylindrica, elliptico- triangularis, valdé corrosa, epidermide tenui, intensé smaragdino induta; margine dorsali angulato, posticé ad marginem ventra- lem rectum parallelo ; latere postico rotundato ; fastigio umbonali tumido, obtuso; cardine edentulo: intus punicea. Long. 12; lat. 2; alt. 8 poll. Had. South Seas. The slender cylindrical form, very dark green epidermis and interior coloration are good diagnostic characters. Mytitus TrossuLus. ‘T. parva, elongata, subarcuata, nitida, coracina, subtus cerulea; umbonibus remotis excurvatis, 5-den- ticulatis; marginibus sub-parallelis; margine ligamentali ad- scendente, recto, angulato; fastigio umbonali tumido, obtuso ; intus cretato, limbo atro; cicatrice palleali lineari. Long. 11; alt. 12; lat. 4 poll. Hab. Killimook, Puget Sound, Oregon. It is more slender and more cylindrical than M. edulis ; the dorsal wing is less elevated, the posterior slope rectilinear; the color is more glossy jet-black and without radiations, and there is a difference in the form of the muscular impression. 95 p: Sy Mytitus (Modiolarca) pusittus. ‘T. parva, transversa, sub- cylindrica, ovalis, solida, concentricé striata ; marginibus sub- parallelis ; latere antico truncato, angulo ventrali obtuso ; latere postico laté rotundato ; umbonibus tumidis, subterminalibus, con- tortis; colore cinereo, vel rubro-tincto. Long. 4+; alt. 4 poll. Hab. Terra del Fuego. This curious little shell is interesting from its being a repre- sentative from the southern seas of a form not uncommon in northern waters. PEcTEN cauRINus. T. trigono-orbicularis, haud crassa, ine- quivalvis, sub-equilateralis ; valva superior convexiuscula, rubra, strils concentricis tenuibus insculpta, costis humilibus rotundatis vel interdum sub-duplicatis ad 20 ornatis: valva inferior convexa, alba, versus marginem rubricans, radiis ad 22 elevatis, quadratis, longitrorsum striatis ; natibus rosaceis compressis ; auribus trans- versis, sub-equalibus, radiatim striatis: intus lactea, rosaceo fim- briata. Long. 22; lat. 235 alt. 1 poll. Hab. Port Townsend, Admiralty Inlet, Oregon. Of the size and aspect of P. maximus and Magellanicus. The lower valve has the ribs like P. Jacobeus, only they are not furrowed. p.345, PecTEN HERICIUS. ‘T. rotundato-triangularis, equilateralis, equivalvis ; valvis convexis, sub-tumidis: valva superior rosea, lineis exilibus concentricis exasperata, et costis ad 24 angulatis, alternis majoribus et spinis erectis fornicatis insculpta: valva inferior pallidior colore saturatiori zonata, costis sub-equalibus spiniferis armata ; natibus acutis, prominentibus ; auribus obli- quis valdé inequalibus radiatim squamoso-striatis ; intus porcel- lana ; marginibus crenulatis, rosaceis. Long. 43 ; alt. 1}; lat. 42 poll. Hab. Straits of De Fuca, Oregon. A very beautiful species, much like P. pallium beneath, but remarkable for the distant ranges of elevated spines on the alternate ribs, the intervening ones being quite depressed, and with merely fine squamous striz, like the rest of the surface. PecTEN Letus. T. ovato-triangularis, ventricosa, equivalvis, diluté rosea albo 5—6-radiata: margine ligamentali obliquo, auriculis valdé inequalibus, obliquis; auricula byssica profundé 96 p.346 fossato-emarginata, radiatim sulcato-costata, costis numerosis inequalibus arguté muriculata ; intus albido-incarnata. Long. 14; alt.¢; lat. 12 poll. Hab. New Zealand. Of the same type as P. Islandicus, but is small, more convex, and the sculpture coarser; the groove separating the auricle from the body of the shell is remarkably deep. / OstreA circumsuTta. ‘T. solida, elongata, ovata, cinerea, ine- quivalvis, marginibus undulatis : valva superior denticulis radian- tibus marginalibus in foveis sub-marginalibus valve inferioris aptantibus: area cardinalis triangularis, contorta, longitrorsum fossata : interior alba, limbo violacescente. Long. 14; lat 1 poll. Hab. Feejee and Samoa Islands. The distinctive characters are the denticles, about twice as long as broad, around the entire margin, tinged with violet. In young specimens the purple coloring is wanting. OsTREA MoRDAX. ‘T. petrosa, angusta, lunata: valva inferior concava, digitis triangularibus erectis fuscescentibus marginata : valva superior minor, planulata, margine profunde sinuato et gran- ulato, sinibus cum digitis coaptantibus: interior albida, olivaceo- maculata ; cicatrice elongata, valde incrassata, nigra: area cardi- nalis planulata, lata. Long. 2; lat. 1 poll. Had. Feejee Islands. The horizontal digitations of the upper valve fitting into the erect canine teeth of the lower valve, together with the denticles within, and the black elevated cicatrix, may serve to identify this species. ‘The upper valve fits so deeply and so closely into the lower that it is nearly impossible to separate them without fracture. OsTREA GLOMERATA. ‘T. crescentica, lata, sinistrorsum arcu- ata, solidiuscula, planulata, scabriuscula, laminis dentatis propé marginem foliata, nigricans et albo-radiata ; margine undulato: interior alba; fovea apicali profunda ; cicatrice nigricante ; mar- ginibus aut simplicibus aut lineolatis et prope cardinem granula- tis; limbo corticali purpureo et viridi variegato. Long. et lat. 2 poll. Hab. New Zealand. This may possibly have been described, though no figure or description answers to the specimens I have seen. O. spathulata and denticulata correspond most nearly. The deep umbonal pit 97 p. 347 of the lower valve, its dark frilled upper margin, and the few denticles near the hinge are among its peculiarities. OsTREA DISCOIDEA. ‘T. subcircularis, planulata, tenuis, pur- purea: valva superior striis crebris albidis radiata; valva infe- rior major, radiatim plicoso-rugosa; colore saturatiori: cavositas parva, argentata, purpureo-marginata; margine prope apicem plicoso-crenulato.. Long. 14; lat. 2 poll. Had. 2 The characters of the single specimen of this delicate and well-formed oyster are so diverse from all others, that notwith- standing the usual inconstancy of form in this genus, I think it may be safely pronounced new. The small, purple-striped West India Oyster (O. Brasiliana) is similar to it. TEREBRATULA CAURINA. TT. parva, fusco-cinerea, transversa, convexiuscula ; quincuncialiter punctata, costis angulatis ad 12 interdum bifurcatis radiata ; margine ventrali circulari, flexuoso ; apice acuto, rectangulari; lateribus rectilinearibus, incumbenti- bus; rostro bervi, vix curvato; foramine circulari, interrupto: apophysis branchialis tenuissima, angustata. Long. 3; lat. 33; alt. + poll. Hab. Puget Sound. T. australis is closely allied, but is more elongated and more convex ; the beak is also elongated and the ribs are less promi- nent. TEREBRATULA PATAGontca. TT. parva, solidula, albida, ovato- triangularis, sub-trilobata, quincuncialiter punctata: valva oper- cularis plana: valva major convexa, sub-gibbosa, costis tribus medianis et utrinque costis quinque divaricantibus ornata ; ros- tro brevi, marginibus inflectis ; foramine magno, rotundato: apophysis branchialis exilis. Long. 4; lat. }; alt. + poll. Had. Coast of Patagonia. A smaller and less transverse species than the preceding, and the disposition of the ribs is quite different. It is also closely related to 7. australis, but differs from it in the same respects. TEREBRATULA PULVINATA. T. tenuis, lenticularis, orbiculato- trigona, albida, quincuncialiter punctata: valva minor convexa, latior quam longa, marginibus lateralibus rectis: valva major 13 98 p.2"F convexior, «que longa ac lata; apice rectangulari, truncato, lateribus incumbentibus ; foramine modico, cireulari: apophysis branchialis tenuissima, reflexa, incumbens. Diam. 2; alt. } poll. Hab. Puget Sound, Oregon. It has the same form and color and surface as 7. vitrea, but is more rounded in front, the incurved areas of the beaks much broader and flatter, the ligament aperture larger, &c. Like other species of the genus, it varies much in form, some being quite globose, while others are compressed. Mactra DEpiLis. TT. parva, alba, tenuis, transversa, elongato- ovata, anticé ovata, postice acuta, valdé hians; valvis tumidis, postice compressis; umbonibus eminentibus acutis, antemedia- nis: cardo debilis; dente V-formi parvo; dentibus lateralibus curtis, acutis. Long. 18; alt. 1; lat. 3 poll. Hab. Singapore. A very delicate species, resembling in all its outlines small specimens of Mya arenaria. end of p. ®¥8. BULLA PARALLELA. T. parva, tenuis, cylindracea, lactea, antice rotundata, postice conica, imperforata, longitud. minutissime striata, ad verticem et ad basim striis undulatis decussata: apertura angusta, deorsum dilatata ; columella callo haud appresso induta ; labro ultra spiram adscendente, tune deorsum intorto. Long. 3853 lat. 4 poll. Hab. ? Smaller and thinner than B. solidula, though striated at the. ends like it, and having the same conformation of the lip. Its sides are parallel. TORNATELLA BULLATA. T. parva, ovata, tenuis, albida, epidermide stramineo fugacissimo induta, spiraliter suleata, sulcis linearibus ad 5 ordinatim dispositis in singulis anfractibus: spira prominula, turrita; anfr. 5 tabulatis, ultimo magno, ventricoso, 15-suleato, supernis planulatis; sutura canaliculata: apertura semilunaris; columella uniplicata, planulaté. Long. 7; lat. ¢ poll. Dredged off Patagonia. This little species like 7. puneto-striata and T. venusta, to which it is allied, has not the ivory surface of most species. It is well characterized by its form and sculpture. Haxioris crisepata. T. parva, tenuis, convexa, elongato- 99 ovalis, undulis obliquis angulatis divaricantibus rugata, spiraliter striata, rubida: spira elevata, submediana; foraminibus parvis, circularibus, confertis, ad septenis perviis, extrorsum canaliculatis ; intus undulosa, nitida, argentea. Long. 13; lat. $ poll. With New Holland shells. About the size and form of HZ. stomatie-formis, Rv., but dis- tinguished by its crowded angular ripples, arranged somewhat like the colors on H. ziczac. No shell approaches it in this re- spect except the very young of H. australis. ScALARIA GRACILENTA. ‘T. minuta, gracilis, elongato-turrita, alba, costis longitudinalibus tenuibus ad 16 clathrata, spiraliter inter costas striata, imperforata: spira anfr. 9 cylindraceis, contiguis ; sutura profunda: apertura circularis, ab anfractu penultimo haud sejuncta; labro continuo, reflexo, posticé et ad columellz basim dilatato. Long. 4; lat. =; poll. Hab. Mangsi Island. One of the most delicate and slender species of the genus, re- sembling the figure of S. gracilis, Sowb., but agreeing still more in its characters with his S. éwrricula. SCALARIA TEXTURATA. T. parva, tenuis, elongato-turrita, rubescens, sub-perforata: spira anfr. 8 rotundatis, fere solutis, costis novem albidis elevatis reflexis superné spinosis clathrata, et striolis inter costas confertissime texturata: apertura circularis. Lat. 4; alt. 3 poll. Hab. is A very pretty slender species, and well characterized by the numerous striz between the ribs forming a delicate network. It is allied to S. turricula, Sowb., which has only revolving lines, is less conical, and the whorls are less rounded. - Lirrorina cincta. _ T. parva, rudis, conico-globosa, fuliginosa, interdum albido-zonata, costulis elevatis rotundatis ordinatis cincta, interspatiis excavatis et minutissime decussatim striatis: spira conica, acuta; anfr. 5 ventricosis, ultimo ampullaceo; sutura bene impressé : apertura ampla, subcircularis ; labro acuto fusco- marginato ; columella alba, planulata, ad basim expansa. Axis 68; diam. 3 poll. Hab. Puget Sound. More globular and proportionally shorter than any described species. Generally resembles Z. striata, but is still less elon- 100 gated, less solid, and bas the ribs larger and less numerous, and its color more dusky. It may be compared with L. breviculus. The preceding descriptions were originally published in the Proceedings of the Boston Society of Natural History, under the following dates, beginning with — Page 1. Chiton lignosus . : - C . Vol. TI. 142. July, 1846. “ “11. Siphonaria cornuta - : se 153. Aug. 1846. a0 19) Helix pusilla, - : 5 é “ 171. Sept. 1846. ‘“« 24, Helix subtilissima , : c é ie 177. Nov. 1846. “ 33. Partula conica . ; : : ‘ ‘ 196. Mar. 1847. — “41. Ancylus aduncus . : : : a 210. June, 1847. “46. Melania bulbosa - 3 : . of 225. July, 1847. “ 50. Natica algida . c 5 : Vol. Ill. 738. Nov. 1848, “ 62. Littorina patula : 5 : : 46 88, Mar. 1849. “67. Trochus bicrenatus : ; C ss 106. Apr. 1849. “ 59. Trochus tantillus ; : 2 . 118. May, 1849: “71. Columbella valga . : : : yf 169, Jan. 1850. “738. Pholas patula . . c ¢ ‘ ¢ 214. May, 1850. “ 78. Erycina quadrata . : ; : us 252. June, 1850. “ 83. Cardita ventricosa . : : : a 276. July, 1850. “ 86. Cyclas egregia : : 5 : +i 292. Nov. 1850. “ 93. Mytilus flabellatus . . ; - es 848. Dec. 1850. ““ 98. Bulla parallela . . : 5 Vol, Il, 251. Aug. 1847. SHELLS OF THE NORTH PACIFIC EXPLORING EXPEDITION, COMMANDERS RINGGOLD AND RODGERS; MOSTLY COLLECTED BY WILLIAM STIMPSON. aX SuCCINEA LAUTA. Testa magna, tenuis, plerumque S. obli- quz similis, sed posticé tumidior, ad apicem minus acuta. Long, 335; lat. 55; poll. On shrubbery at Hakodadi (Isl. Jesso). A very large, thin shell, most like S. obliqua, Say. W.S. VITRINA IMPERATOR. ‘T. magnifica, fragilis, ventricosa, epi- dermide rigida fuscescente induta, obsolete spiraliter striata ; anfr. 3+. Apertura ampla subcircularis, ad columellam vix incras- sata. Axis 2; diam. 14 poll. TInhabits Hong Kong in ravines near summits of hills. W. S. By far the largest species yet described; approximates closely to H. ampulla, Bens. Heiirx tata. Testa tenuis, lucida, subglobosa, viridi-cornea, vitta rufa ad peripheriam et altera prope suturam ornata ; anfr. 5 ventricosis, striis volventibus tenuissimis. Apertura magna, sub- circularis, peristomate modico, everso, ad umbilicum magis reflexo. Axis 1; diam. 1} poll. Inhabits Hakodadi on bushes and shrubs. W. S. General outline not unlike H. pomatia. He1rx Lasivis. T. parva, tenuis, nitida, succinea, depressa, lenticularis ; ad peripheriam acuta; subtus convexa, polita, arete 102 umbilicata; anfr. 5 convexiusculis. Apertura transversa, anguste lunaris, columella verticalis. Axis 74; diam. $ poll. Inhabits Hakodadi, among dead leaves, in woods. W. S. Very nearly allied to H. misella. Heiix pupuLa. T. minuta, ovato-conica, levis, succinea, infra convexa, indentata; anfr. 6-++ tabulatis, ad peripheriam ob- tust angulatis. Apertura transversa, lunata; labro simplici, colu- mella recta, reflexa. Axis ad + poll. Among dead leaves in woods, Hakodadi (Isl. Jesso). W. S. Very much like our chersina, or the European fulva. Hetrx pauper. T. parva, discoidea, rufo-cornea, striis in- crementi costulata, subtus calyculata; anfr. 44 convexiusculis ; sutura profunda. Apertura perobliqua, prona, rotundata ; peris- tomate simplici. Diam. 38;; axis ¢ poll. On dead wood in thick- ets, Petropaulski, Kamtschatka, also Hakodadi (Isl. Jesso). W. S. Allied to H. rotundata and perspectiva. Probably the same noted by Middendorff as H. ruderata of Europe. Hetix OPERCULINA. Testa tenuis, depressissima, rufo-cornea ; anfr. 5 coneavo-convexis, ad peripheriam acutissime carinatis, marginatis ; subtus concava deinde convexa. Apertura angustis- sima, sigmoidea, peristomate vix reflexo. Axis 745; diam. 3% poll. Inhabits Peel Isl. (Bonin Is.) Mr. Wright. An exceedingly depressed species, looking much like the oper- cle of some Trochus. Hetrx squarrosa. Testa planorboidea, squarrosa, ochra- ceo-cornea, subtus pallidior, convexa, late umbilicata ; anfr. 6 con- vexiusculis, ad peripheriam subangulatis. Apertura parva, an- gusta, lunata ; peristomate simplici, ad columellam reflexo, Diam. 58; axis 33 poll. (probably immature.) Ousima (Japan), among stones on hill sides. W. 5. Well distinguished by its large deep umbilicus, ochreous color, and rough, scaly surface. Allied to Shanghatensis. NANINA PISOLINA. ‘Testa fragilis, vitrea, levis, mellita, orbic- ularis, subtus convexior, imperforata; anfr. 54 depressis, ad peripheriam rotundatis. Apertura lunata, labro ubique simplici. 1083 Diam. 1; axis { poll. Cape of Good Hope (?) A small globular species unlike any one I have found de- scribed. Sub-gen. Corrina, H. & A. Adams (emendatus). Testa pla- norboidea, plerumque sinistrorsa, plus minusve distorta, arcte spi- rata, subtus concava; fauce in fundo denticulis compressis feré occluso, quorum uno sepe ad aperturam producto; peristomate incrassato, reflexo. C. puLvinaris. T. utrinque concava, cornea, striis incrementi conspicuis insculpta; anfr.ad 7 (subtus 5) ultimo demum deflecto. Apertura lunata admodum campanulata, peristomate flexuoso, satis reflexo ; denticulis in fauce ad 9, haud productis. Diam. 2; axis + poll. Hong Kong, fet up in the ravines ; also near Canton. W. 5. Almost precisely of the size and shape of HZ. refuga, Gould, ‘but that is reversed and has a lamina running to the aperture. SrREPTAXIS SINENsIS. Testa obliqua, polita, virescens, spira depressa, ovoidea, anfr. 7 acutis, sutura profunda minute crenu- lata. Apertura obliqua, semi-ovalis, verticalis, lamella unica pala- tali munita ; Se flexuoso, reflexo ; columella recta ; um- bilico amplo. Axis =8;; diam. } poll. Inhabits‘Hong Kong. Differs from S. Souleyetana in its smaller size, smooth surface, flexuous lip, and more elongated aperture. CLAUSILIA PRECLARA. ‘Testa sinistrorsa, clavato-fusiformis ad apicem producta, dilute carnea, liris conspicuis clathrata ; anfr. 11 ultimo angustato, trientem long. teste adequante. Apertura pyriformis, anticé sub-canaliculata ; peritremate albo satis reflexo ad anfr. ultimum haud coadnato; lamina palatali elevata, tenui, 1. columellari conspicua, duplici, contorta, lamellis 4 tenuibus ad interspatium, extus apparentibus. Axis 1; diam. max. } poll. Inhabits Loochoo. W. 5. Allied to valida, insignis, &e., but most like pluviatilis on ac- count of its aperture. ALYCHUS PILULA. Testa parva, ovato-conica, imperforata, rufescens, striis numerosis (sub lente) cincta; anfr. 4 rotundatis, ultimo constricto ; sutura profundé. Apertura circularis, anfrac- 104 tum proximum vix attigens; fauce valde contracto ; peristomate modicé reflexo ; fistula suturali exili valde appressa. Operculum corneum, arete spirale, apice centrali. Axis +; diam. + poll. Inhabits Hong Kong, China. WW. S. Cyctotus 1LLotus. TT. planorboidea, rudis, rubiginosa, sub- tus late et profunde umbilicata; anfr. 4 rotundatis, sutura sim- plici, impressa. Apertura circularis, anfractum proximum haud amplectens ; labro simplici. Diam. 3; axis 1 poll. Inhabits Loochoo. W. S. In form and general aspect greatly resembling Cyel. suturalis, Sowb., but is smaller, and has a simple suture. CycLOSTOMA BARBATA. ‘T. parva, ovato-conica, rufo-cornea, liris numerosis volventibus et striis incrementi tenuibus lamellosis decussata, decussationibus barbam gerentibus; anfr. 5 rotun- datis, sutura canaliculaté. Apertura postice subangulata ; peris- tomate simplici, vix expanso ; umbilico modico, profundo. Diameters } inch. Inhabits Ousima. W. S. Two of the ridges on the outer whorl and one on the others are more conspicuous than the rest. CYCLOSTOMA CITHARELLA. TT. parva, subglobosa, tenuis, rufa, laminis incrementi tenuibus ornata, ad peripheriam prope aperturam biangulata, satis umbilicata. Apertura circularis, peristomate simplici anfractum proximum tantum _attigente. Operculum subrotundum, paucespiratum, margine attenuato. Diameters } inch. Inhabits Ousima. Were it not for the operculum, it might be mistaken for Helix harpa, Say. CycLostomMA MusiIvA. ‘T. ovato-conica, cornea, radiatim rufo- strigata, subtus ad peripheriam rufo-tessellata, modice umbilicata, striis volventibus ad 5 arata, lineis incrementi conspicuis decus- sata; anfr. 5 rotundatis, suturé canaliculata. Apertura rotun- data, peristomate simplici. Axis +; diam. 4 inch. Inhabits —? (probably Japan). The surface is conspicuously and beautifully relieved by the decussating lines. 105 The preceding three species form a peculiar group near to Cyclostoma proper, characterized by the thin paucispiral opercle with thin edges, the globose conic form, free umbilicus, nearly circular peristome which barely touches the preceding whorl, and the projecting lamellar striae of growth decussating with revolving ridges, in some eases furnished with epidermal barbs. It may be called JAPONIA. HELICINA VERECUNDA. T. pyramidato-lenticularis, spiraliter minutissime striata, luteo-virens ad apicem rubescens, ad _peri- pheriam subangulata, subtus convexa, admodum callosa ; anfr. 4 planulatis. Apertura ovata-triangularis ; peristomate evaso, albido, ad columellam rectam angulariter juncto. . Axis 4; diam. } inch. Inhabits Loo Choo. . Belongs to the group of which H. striatula is a type. SuccINEA LYRATA. ‘T. ovata, solidula, luteo-virens, unda- tellis flexuosis lyrata; anfr. tribus ventricosis, apice obtuso. Apertura ovata, columella yix flexuosa callo perexiguo induta. Axis 4; diam. } poll. Near the sea-shore, Loo Choo. W. S. A small ovate species, quite remarkable for its lyrate surface. Avricuta (Leuconia, Gray) opporTuNA. T. parva, ellip- soidea, solida, livido-albida, levis ; anfr. 6 ad suturam imbricato- appressis. Apertura falcata, postice acutissima, antice rotundata ; labio lamellA compressa elevaté mediana et lamella duplici anti- cali obliqua instructo; labro simplici. Long. 8 millim.; diam. 4 millim. Inhabits Loo Choo Is. W. S. OMPHALOTROPIS sTRIcTUS. T. elongata, ovato-conica, solid- ula, levis, arcte umbilicata ; anfr. 6 rotundatis ad suturam tabu- latis. Apertura ovata, peritremate simplici continuo, sed posticé ad ventrem retracto; umbilico carina inconspicua approximata cincto. Axis 1; diam. 4 poll. On old stone walls, Loo Choo. W. S. One of the smallest species yet described, with a very small perforation, and a faint keel around it at a very short distance. Liwn#a OLtuLa. T. parva, tenuis, ovata, viridi-cornea, im- polita ; anfr. 4-4, ultimo ventricoso. Apertura rotundato-ovata ; 14 106 columella simplici, postice callo lato indutéa. Axis }; diam. 3 poll. Streams and marshes on Hong Kong Island. ( Wright.) Very much like a small L. modicella. AncyLus GAuLus. T. oblique pyramidata, apice ad quad- rantem posteriorem longitudinis, dextrorsum inclinato, obtuso ; epidermide luteo-cornea, superne fusca. Apertura rotundato- ovata, intus plumbea. Long. 4; lat. 3; alt. 4 poll. Inhabits Cape of Good Hope. W. S. A solid, well rounded species, without any salient characters. PLANORBIS SPIRILLUS. T. parva, discoidea, utrinque concava, tenuis viridi-cornea, plerumque liris ad quatuor prope aperturam instructa; anfr. 3-++ utrinque apparentibus, suturaé impressa. Apertura ampla, perobliqua, lata, lunata. Diam. $3 alt. 15 poll. Inhabits Ousima. W.S. Very like to P. albus and deflectus ; perhaps the same that Middendorff refers to under the former name, as from Kam- tschatka. SEGMENTINA LucIDA. ‘T. parva, tenuis, orbicularis, dilute cornea, radiatim viridi-lineata, supra fornicata, infra poculiformis, vix perforata; anfr. 4, ultimo lato, declivi; sutura impressa. Apertura ampla, postice acuta, antice rotundata ; fauce denticulis armataé. Alt. 745; lat. 4 poll. Inhabits Loo Choo. W. 8S. Smaller and more elevated than the following, with quite a different surface and color. SEGMENTINA usTA. T. depressa, orbicularis, concavo-convexa, nitida, umbrina, laté umbilicata; anfr. 6, apicalibus arctissimis, excavatis, ultimo amplo, declivi; sutura canaliculata. Apertura perobliqua, anguste lunata; fauce in fundo quadridentata. Alt. qi5; diam. 58, poll. Inhabits Loo Choo Islands. W. S. Resembles in color S. Largillierti, which is larger, less pol- ished, more largely umbilicated. PALUDINA HISTRICA. T. ovato-conica, variabilis, tenuis, stri- atula, rufo-cornea ; anfr. 6 ventricosis, postice tabulatis, ultimo ad peripheriam subangulato, albido; sutura profunda. Apertura 107 rotundato-ovata, subeffusa; peristomate simplici, nigrescente, um- bilicum parvum subtegente. Dimens. 1X? poll.; 14X45 poll. etc. Ditches in paddy-fields, Ousima and Loo Choo. W. S. BITHYNIA DIVALIS. T. minuta, imperforata, ovato-conica, solidula, levis, olivacea ; anfr. 3-+- ventricosis, ultimo permagno. Apertura parva, ovata, verticalis ; peritremate continuo ad colu- mellam flexuoso. Axis =2,; diam. 53, poll. Inhabits China, vicinity of Canton. Mr. Bowring. The genus is somewhat equivocal. It has an operculum more like that of a true Paludina than of any other genus. ASSIMINEA DEBILIS. ‘'T. globoso-conica, solidula, luteo-cornea, arcte umbilicata; anfr. 5 tabulatis, ultimo ad peripheriam sub- angulato. Apertura rotundato-ovata, peritremate continuo, vix incrassato. Alt. 7 ; diam. 5 poll. Loo Choo Is. W.S. Paler and less solid than any other described species ; more elongated than the following, and differing in color. ASSIMINEA RUBIDA. ‘T. ovato-conica, solida, impolita, stra- minea aurantiaco tincta, perforata; anfr. 6 rotundatis, sutura profunda. Apertura parvula, pyriformis, peritremate continuo. Alt. g5; diam. 5%, poll. Inhabits Loo Choo, on beaches. W. S. Rather smaller than the preceding, and distinguished by its color and solidity. MELANIA LIBERTINA. ‘TT. elongata, turrita, truncata, luteo- cornea, hic illic fuscata, lineis volventibus antice insculpta; anfr. d+ convexiusculis. Apertura elongata tortuosa, labro albo pos- tice sinuato, antice in canalem obtusam producto; fauce livida. Long. 14; lat. 2 poll. Simoda and Ousima, in sluggish streams and ditches. W. S. Generally resembles M. Virginica and indefinita, Lea, which has a more lax and elongated spire. The grooving varies, and in some specimens is nearly wanting. MELANIA GRACILINA. TT. subulata, truncata, imperforata, tenuis, levis, olivacea, sulcis acutis remotis cincta; anfr. 7+ 108 convexiusculis, posticis attenuatis, ad suturam maculis fuscis spe ornatis. Apertura anguste ovalis, vix effusa; fauce livida. Long. 1; lat. 4 poll. Inhabits Taheiti, common in streams. Belongs to the peculiar subulate group of Polynesia; peculiar by its grooves and the dots near the suture. MeELAnIA DOLOROSA. ‘T. elongata, solida, levis vel striis raris cincta, picea; anfr. 6+ rotundatis, ultimo bulboso. Aper- tura ovato-rotundata, vix producta; columella arcuata, lactea ; fauce cerulea. Long. 2; lat. } poll. In streams near Hakodadi. Wright. Principally noticeable for its sombre appearance, usually in- crusted by a rusty, felt-like coating, so as to obscure its true surface. NERITELLA PUELLA. T. parva, oblique ovata ad ventrem planulata, levis, viridescens, lineis angulatis fuscis et interdum fasciis articulatis ornata; anfr. 3, ultimo amplo. Apertura parva, labro producto, columella callo copioso induta, minutissimé dentic- ulata. Lat. max. 7, min. 5 millim. Inhabits Loo Choo. W. 8S. Nearly of the shape and size of J. viridis, the spire being less prominent, and the aperture smaller. NERITELLA (Clithon) PeNiciLLATA. T. ovato-globosa, obli- qua, levis, viridis lineolis luteis undulatis obliquis ubique ornata ; anfr. 3-++ ad trientem posteriorem angulo instructis spinas tenues tubulosas ad sex armato. Apertura ampla, labro producto acuto, labio simplici, lutescente ; fauce crulescente. Axis 56; diam. 4 poll. Inhabits New Ireland. Lieut. Van Wycke. Distinguished from most spinous species by its smooth surface, and from all by its delicate lineations. Nerita pica. T. parva, tenuis, oblique ovato-globosa, rudis anthracina maculis parvis multiformibus albis ornata. Spira haud elevata. Apertura semicircularis, labro simplici nigro marginata ; columell& excavata, nitida, flavescente, edentata. Operculum virescens, granulatum. Axis 54,; diam. 3 poll. Inhabits Simoda, very common on rocks. 109 A small, prettily marked species, remarkable for its destitution of grooves, granules, folds, and denticles. NatIca SEVERA. TT. ovato-globosa, solida, impolita, rufo- cinerea ; anfr. 4 ventricosis postice quadratis, apice fusco. Aper- tura ovata, labro posticé tenui, antice sensim incrassato, ad colu- mellam rotundato; umbilico magno, clavo fere impleto. Axis 1,8,; diam 1,3, poll. Inhabits Hakodadi Bay. W. S. From its form and exterior it might be taken for WV. heros, but it has a very different umbilicus, resembling NV. unifasciata. Natica russa. T. imperforata, ovato-globosa, tenuis, levis, epidermide tenui cerina induta ; anfr. 4 ventricosis postice quad- ratis. Apertura ovata, subeffusa, labro tenui, umbilico callo com- presso albo obstructo. Operculum osseum. Axis 18 millim. ; diam. 16 millim. Arctic Ocean. W. S. Like NV. clausa, but larger, the whorls more broadly shoul- dered, the umbilical region more concave and more perfectly closed by callus than in any shell of that species I have seen. Natica purrtis. T. parva, ovata, solida, polita, epider- mide tenuissima straminea induta; anfr. 4 tribus apicalibus par- vis eburnatis ; sutur’ obscura; facie ventrali planulaté umbilico semicirculari perforata plerumque callo impleto. Apertura semi- ovalis, postice rotundata ; labro acuto. Operculum corneum ru- bidum. Axis 4; diam. 3 poll. ' Inhabits Porto Praya. W. S. Resembles WV. glabella and NV. nitida. It is, however, more elongated, and less flattened on the face. Gena pitecta. T. parva, tenuis, elongato-ovalis, nitida, luteo-virens maculis albis trigonis nigro apicatis interdum serial- ibus ornata, striis incrementi et striis spiralibus profundioribus decussata ; anfr. 3, apice feré terminali. Apertura angusta, ova- lis faciem ventralem fere adequans; intus nitide virescens. Long. 8 millim.; lat. 4 millim. Inhabits Hakodadi Bay, on shells, &c. W. S. Very delicate and slender, allied to G. planulata, a much 110 larger species, and G. strigosa, of which it may possibly be the young. VANICORO SCALARINA. ‘T. ovato-globosa, tenuis, alba, costis remotis elevatis imbricantibus lyrata et filis volventibus decus- sata; anfr. 4 ventricosis bené discretis. Apertura ampla rotun- dato-ovata anfractum penultimum vix attigens, labro effuso, labio recto retracto ; umbilico amplo infundibuliformi costa marginato. Long. 10 millim. ; lat. 8 millim. Found at Loo Choo. W. S. Like V. Gueriniana, but differs in its sharper compressed ribs, which stop short at the umbilical ridge. FossaRus TORNATILIS. 'T. solida, ovato-globosa, cinerea ; anfr. 3, ultimo magno ventricoso costis elevatis recumbentibus* alter- natim se#pe minoribus ad 12 cincto (alteris tricinetis) et lineis conspicuis incrementi clathrato ; suturaé canaliculata. Apertura semicircularis feré sejuncta; umbilico elongato, plicato. Axis 5 millim.; diam. 4 millim. Hong Kong harbor, 10 faths. W. S. Much like F. costatus. Without the animal or operculum it is impossible to say that this shell does not belong to the genus Vanicoro. PAXILLUS TANTILLUS. ‘T. minuta, cornea, pupzformis, inor- nata; anfr. 6 ventricosis. Apertura circularis, labio semicirculari, incrassato, ventre callo expanso copioso induto; canali antico obliquo curto. Axis 1.25; diam. .75 millim. Inhabits Hong Kong. W.S. PAxILLus LyRATUs. T. parva, pupzformis, gibbosa, flavido- virens, apice levi, alibi laminis erectis longitudinalibus lyrata ; anfr. 7 ventricosis, penultimo ampliore ; sutura profunda. Aper- tura subcircularis, anticé acuta, ventre callo copioso firmato ; labro duplici, lateraliter viso flexuoso. Axis 3 mill.; diam. 1.5 millim. Inhabits Loo Choo Islands. W. S. Lirrorina vipua. T. parva, ovato-conica, intense olivacea et omnino flavido concinné tessellata, striis transversis insculpta ; anfr. 5 ventricosis declivibus. Apertura pyriformis, columella incarnata; labro intus lineato. Axis 7 millim.; diam. 4 millim. 111 TInhabits Ousima. Very regular in form, and the reticulations are only seen on close inspection. > BuLLA verRNICcOSA. ‘TT. ovato-globosa, solida, laevigata, late perforata, cinereo cum rufo variegata et fasciis 4 macularum fus- carum interdum angulatarum cincta. Apertura angusta, labro recto vix inflecto rufo marginato; fauce porcellana. Axis 1.3 poll.; diam. .8 poll. Inhabits Loo Choo Islands. W. S. Very shining, less inflated and narrower aperture than B. am- pulla ; more globose and more polished than B. australis. Atys muscARIA. T. minuta, ovato-elliptica, tenuis, virescens, punctis fuscis transversim dispositis ornata, striis utrinque in- sculpta; vertice infundibuliformi imperforato. Apertura angusta, antice effusa; labro retrorsum producto, dentigero; columella brevi, torta. Axis 4 millim.; diam. 2 millim. Inhabits China Seas. W. S. ATYS PORCELLANA. T. parva, tenuis, ovato-cylindracea, lac- tea, striis transversis remotis utroque crescentibus arata; apice vorticiformi imperforato. Apertura angusta antrorsum amplians, basi subtruncato; columella profundé arcuata callo valde munita subperforata. Axis 12; diam. 5 millim. Inhabits Kagosima Bay. W. S. HAMINEA ANGUSTA. T. parva, tenuis, ovato-cylindracea an- trorsum ampliata, obtuse rotundata, flavo-virens, striis transversis insculpta; vertice oblique truncato subperforato. Apertura an- trorsum ampliata ; columella haud excavata, plica et callo carente. Axis 6; diam. 4 millim. Inhabits Simoda. W. S. Resembles in size and form H. ambigua. PHILINE VITREA. ‘T. modica, fragilis, vitrea, pellucida, irides- cens, rotundato-ovata, depressa, undulis concentricis sinuatis notata ; apice opaco vix indentato anfractum unicum exhibente. Apertura amplissima; labro postice rotundato; columella acuta absque plica, interiorem teste patefaciente. Axis 10; diam. 8; alt. 5 millim. Dredged at Hong Kong. W.S. PHILINE ARGENTATA. TT. ovato-quadrata, compressa, tenuis- sima, lucida, talcosa, concentricé undulata et lineis transversis argentatis insculpta; apice indentato calloso, labro postice late 112 exstante, anticé subtruncato; plicd columellari obvid. Axis 6 mill.; diam. 5 millim. Inhabits Hakodadi Bay, in sandy mud, 2-6 fathoms. W. S. Very much like P. s¢utulum, Loven, except in its sculpture. Distinguished from P. vitrea by its off-standing lip and silvery grooves. TORNATINA APICINA. 'T. minuta, cylindracea, elongata, alba, lineis incrementi tenuissimis insculpta; apice mammillata ; anfr. 4, sutura canaliculata. Apertura ? long. teste, perangusta ; plica columellari obsoleta ; labro lateraliter viso arcuato. Axis 9) millim.; diam. 2 millim. Inhabits Sydney Harbor. W. S. The aperture is broader and the pillar fold less definite than in 7. fusiformis. CyYLICHNA VILLICA. T. minuta, ovato-cylindracea utroque subconica, albo et ferrugineo cincta, lineis volventibus insculpta et postice concinne plicata; vertice late perforato. Apertura angusta, labro vix apicem excedente; columella subperforata, plica obsoleta. Axis 3; diam. 1.5 millim. China Seas. W.S. CYLICHNA ELLIPSOIDEA. 'T. minuta, solida, elongato-elliptica eburnea, transversim striatula; apice involuto late umbilicato ; labro apicem vix excedente, late arcuato. Apertura perangusta, antice acuta; columella brevi, valida, plic&é modica; ventre callo copioso induto. Axis 3 millim.; diam. 1+ millim. Inhabits Loo Choo. W.S. CYLICHNA REGULARIS. TT. satis magna, elliptica, elongata, alba, spiraliter insculpta, vertice obtuso late perforato. Apertura perangusta, admodum anticé ampliata ; columella inerassata, vix incurvata, imperforata; ventre calloso. Axis 9 millim.; diam. 4 millim. From Sydney harbor. W. S. CYLICHNA OPEROSA. ‘T. minuta, gracilis, cylindracea, vires- eens, polita, vel ad basim minutissimé circumstriata ; vertice obtuso, amplissimé umbilicato. Apertura angusta, linearis; plica colu- mellari conspicué, haud perforata. Axis 4 millim.; diam. 1 millim. From Hong Kong harbor. W. S. CyLIcHNA La&TA. T. parva, ovata, elongata, lactea, nitida, transversim (sub lente) striata; vertice plerumque perforato. 113 Apertura antrorsum ampliata; labro vix postice producto ; col- umella profundé incurvata, imperforata ; plicd satis conspicua. Axis 5 millim.; diam. 2 millim. Inhabits Kagosima. W. S. A somewhat tumid, very sym- metrical species. . CYLICHNA PROTRACTA. T. satis magna, solida, cylindracea, ossea, spiraliter insculpta ; apice oblique truncato carinato crateri- formi perforato. Apertura angusta; labro recto postice angu- lato; columella curta, solida, valde plicata. Axis 12 millim.; diam. 5 millim. Coast of China. W.S. CYLICHNA TUBULOSA. T. modica, elongata, cylindracea, deor- sum sensim ampliata, albida, levis vel potius (sub lente) lineis volventibus insculpta; vertice oblique truncato crateriformi imper- forato. Apertura perangusta, linearis ; pica columellari conspicua. Axis 8 millim.; diam. vix 3 millim. Simon’s Bay, Cape of Good Hope. W.S. Allied to O. involuta, A. Ad. but the outlines are more rectilinear. CYLICHNA MELAMPOIDES. ‘TT. minima, solida, ovata, eburnea, polita, antice striis cincta; vertice obtuso, impresso, imperforato ; basi acute rotundato. Apertura antrorsum dilatata; labro vix reducto; columella curté, imperforata. Axis 4 millim.; diam. 2 millim. From China Seas. W. S. CYLICHNA CONSOBRINA. T. cylindracea, abbreviata, antice angustata, postice truncata, solidula, albida epidermide fugacis- simo induta, transversim striatula; vertice indentato, angulato. Apertura angusta, recta, labro ad apicem planulato; columella abbreviata, torta. Axis 6 millim.; diam. 2+- millim. Taken on the west coast of Jesso. L. M. Squires. Size and general form of C. triticea, but less rounded at extremities and pillar fold less obvious. OC. corticata, Miill. is nearly the same. ACTON SECALE. ‘T. parva, elongato-ovata, tenuis, straminea, posticé polita vel linea subsuturali insculpta, antice striis puncta- tis cincta; anfr."4 tabulatis ultimo ? long. teste; apice obtuso. Apertura 3 long. teste vix superans, auriculata, postice acuta, antice bene rotundata ; columella conspicue torta. Axis 4 millim. ; diam. 2 millim. From the China Seas. W. S. 15 114 BuccinuLvus stricosus. T. ellipsoidea, elongata, solidula, sulcis volventibus punctatis arata, interspatiis fusco et albido cate- natis, et fascia albida mediana, suturali et anticali ornata ; anfr. 5, ultimo 2 long. testes adequante. Apertura 2 long. teste, peran- gusta; columella profunde excavataéa. Axis 8 millim; diam. 3 millim. Inhabits Loo Choo and Kagosima. W. S. . Remarkable for its small size and slender form. Some speci- mens are much shorter than others and nearly without the slaty lines; so that the species appears to be quite variable. Liotta soLtmpuLa. ‘T. ovato-conica, depressa, solida, albida, modicé umbilicata ad 12-plicata, lira ad peripheriam, altera sub- suturali, altera basali foveata; umbilico dentato; anfractibus quinque. Apertura verticalis ; columella tenui, profunde abdita ; labro crasso simplici. Axis 5 millim.; diam. 8 millim. Dredged in 25 fathoms off the coast of China. W.S. Allied to Z. Pero- nii and L. cidaris, but differing in the umbilicus. LiotiaA LocuLosa. ‘T. parva discoidea, solida, cinerea; anfr. 4 citd crescentibus, bene discretis, ultimo ad peripheriam biangu- lato, costis ad angulos tubuloso-nodosis‘lyrato 5; sutura crenulata ; umbilico amplo, profundo, crenulato. Apertura circularis ; labro reflexo quadricristato. Axis 2 millim.; diam. 5 millim. Inhab- its Loo Choo. W.S. Lior1a FULGENS. T. parva, discoidea, aureo-margaritacea, lamina caleareaé ochracea incrustata; anfr. 3+ citd crescentibus, ultimo ad peripheriam carinis binis acutis rufo-tessellatis cincto, interspatio concavyo; subtus crateriformis. Apertura ampla cir- cularis inferior ; labro expanso, lobulato. Axis 2 millim. ; diam. 5 millim. Inhabits St. Simon’s Bay, Cape of Good Hope. W.S. Very like Delphinula bicarinata, Ad. and Rv., which has a more ele- vated spire and unequal keels. LiotrA ASTERISCUS. T. minutissima, solida, alba, conica, costis elevatis acutis obliquis ad 20 sulco subsuturali sulco utro- que ad peripheriam et suleo umbilicum ambiente aratis ; anfr. 4 convexis. Apertura circularis ; peristomate crasso duplici radiante ; fauce margaritacea. Diam. 1.5 millim. ; axis 1 millim. 115 Inhabits Hong Kong. W.S. © Very minute, but evidently adult and perfectly well characterized. CycLOSTREMA MODESTUM. ‘TT. parva, discoidea, solidula, lac- tea, supra convexiuscula, infra leniter concava, perforata; anfr. 4 sulcis volventibus clathratis cinctis quorum subsuturali majori. Apertura circularis; labro crenulato. Diam. 4 millim.; axis 2 millim. Inhabits Hong Kong. W. S. PATELLA GRATA. T. ovato-conica, elevata, apice acuto ad- modum antico, extus rudis, cinerea, costis elevatis compressis jux- ta marginem tubulosis radiata; margine expanso denticulato ; intus ochracea fusco variegata, spatula et submargine intense castaneis. Long. 30 millim.; lat. 24 millim.; alt. 14 millim. From the north shores of Niphon. Mr. Brooke. PATELLA PALLIDA. ‘T. oblique pyramidata, cinerea, rudis, apice parum antico, costis inequalibus rotundatis varie dispositis ad 20 instructa; apertura rotundato-ovata, margine indentato, submargine cinereo, cavositate porcellano, spatula haud colorata. Long. 40, lat. 33, alt. 30 millim. Inhabits Hakodadi Bay, on stones and gravel, 10 fathoms. W. S. AcM&A porsuosa. ‘TT. ovoidea, rudis, costis inequalibus an- gustis humilibus tuberculatis ad 20 instructa ; apice antico, acuto decurvato ; intus virescens, spatula (centro plerumque excepto) castanea, margine fere integro.ad costas castaneo. Long. 20, lat. 15, alt. 10 millim. ‘ Habitat, Hakodadi on rocks of 2d and 3d laminarian zone. W.S. Closely allied to A. patina, or that variety of it named monticula by Nuttall. The apex is more central, ribs more tu- bercular and less angular. SCUTELLINA UNGUIFORMIS. ‘T. parvula, alba, lucida, rotun- dato-elliptica, depresse fornicata, apice minfto deflecto, pagina externa striis concentricis et radiantibus minutissimis decussata versus apicem gemmulata. Long. 6, lat. 5, alt. 1 millim. Hab. Kagosima. W. S. SCUTELLINA SCOBINATA. T. parva, cinnamomea, rotundato- ovata, admodum elevata fornicata, apice terminali, deflecto ; extus undulis concentricis et striis confertissimis radiantibus ornata et 116 granulis elongatis obliquis inordinatis scobinata ; -intus subnacrea. Long. 8, lat. 7, alt. 4 millim. Hab. Ousima. W. S. EMARGINULA PILEATA. ‘T. minuta, straminea, oblique ovato- conica, costis granulosis numerosis radiantibus ornata; apice anticali, obtuso; apertura ovato-rotundata; margine crenulato ; fissura profunda retrorsum in canalem externum clathratum pro- tracta. Long. 5, lat. et alt. 4 millim. Hab. Loo Choo. W. S. EMARGINULA (Clypidina) autitis. T. parva, oblique conica, elevata, sulcis confertis radiantibus et liris tenuibus concentricis insculpta apice’ obtuso, recurvo ; apertura ovalis; margine cre- nulato ; fissura profunda retrorsum in canalem externum reducta. Long. 5, lat. 4, alt. 4 millim. Hab. Kagosima Bay, 10 fathoms, gravelly. W.S. More simply and finely striate than any other species. E. (Clypidina) raprata. TT. cinerea, elliptica, costis radian- tibus imbricatulis ad 17 et costulis intermedianis ad 3 ornata, prope apicem acutum deflectum submedianum clathrata; intus viridi radiata, margine denticulato; fissura curta in canalem in- ternum versus apicem producta. Long. 12, lat. 8, alt. 7 millim. Inhabits Sydney Harbor. W. S. E. (Clypidina) rextinis. T. parvula, tenuis, fusco et cinereo variegata, ovato-rotundata, costulis concinne imbricatis (tertio vel quarto plerumque majore) radiata; apice subcentrali acuto ; intus viridi vel zonata vel radiata, margine crenulato ; fissura satis pro- funda postice in canalem internum ad apicem producta. Long. 9, lat. 7, alt. 4 millim. Hab. Ousima, on surf-washed rocks. W.S. RIMvULA ECHINATA. T. parva, ovalis, costata, costis inequali- bus echinatis, interstitiis simplicibus (?), apice acuto revoluto ; foramine oblongo antice rotundate, postice in canalem clathratam reducto ; margine indentato. Long. 9, lat. 7, alt. 4 millim. Hab. : Gaspé Straits. An imperfect description from the figure of a shell unfortu- nately lost or missing. It seems different from the three recent species already described, but possibly may be &. propinqua A. Ad. Cuiton (Lophyrus) Lucupris. T. parva, solida, punctata 117 elongato-ovata, vix carinata, smaragdina; area centrali liris lon- gitud. pectinata ad® apicem levi; areis ‘lateral. elevatis, liris ramosis nodulosis instructis; valvis terminalibus magnis prope marginem radiatis, umbone subcentrali; ligamentum latum, squa- mis magnis transversis convexis obtectum. Long. 25, lat. 15 millim. Hab. C. (Leptochiton) comprus. T. parvula, tenuis, elliptica, aut viridis aut incarnata spe albido vel flavo varié fasciata punc- tata vel maculata; valvis brevibus, terminalibus radiatim costatis etiam punctatis, area& centrali quincuncialiter punctata ; areis late- ralibus elevatis et sulcis radiantibus 4—5 insculptis ; intus viri- dans; ligamentum angustum squamis parvis elongatis sulcatis imbricatum. Long. 15, lat. 10 millim. Hab. Ousima, Bonin and Loo Choo Is. W.S. In form like sqguamulosus and rugulatus, but sculptured differ- ently ; possibly C. caliginosus Rv. C. (Leptochiton) Jacopmus. T. parvula, cinerea, elongata, elliptica vix carinata; valvis terminalibus permagnis, fornicatis, costis scabris radiantibus ad 10 ornatis; ared centrali cancellata ; areis lateral. conspicuis, bicostatis ; ligamentum angustum, squa- mis minutis elongatis obtectum. Long. 12, lat. 5 millim. Hab. Simoda. W.S. The vaulting and ribs of the two large terminal valves make them resemble two small Pectens. C. (Leptochiton) concrnnus. T. minuta, rubida, elliptica, fornicata, omnind punctata, punctis seriatim dispositis, seriebus radiatim flectantibus; areis lateralibus haud elevatis, longitud. undulatis; valva antica crescentica; v. postica acute umbonata concentricé undulata; ligamentum angustum, lutescens, pruino- sum. Long. 8, lat. 5 millim. Hab. Hakodadi. W. S. In size and form like C. albus, but sufficiently distinet by its evident lines of punctures. C. (Leptochiton) craticuLatus. T. tenuis, fusco-cinerea, lata, elliptica, admodum carinata ; area centrali longitud. clath- rata, clathris elevatis, acutis; areis lateral. angustis, .elevatis, liris eminentibus asperis divaricantibus 4-8 instructis ; valva an- ticd erescenticd radiatim lirata ; v. posticé vix umbonata radiata 5 118 ligamentum latum, squamis minutis elongatis striatis vestitum, fusco-fasciatum. Long. 30, lat. 20 millim.e¢ Hab. China Seas, probably Simoda. The number of ridges on the lateral areas and terminal valves varies much. C. (Lepidopleura) LePrpus. T. parva, elliptica, tectiformis, flavo-virens olivaceo strigata; valva antica semicircularis, radia- tim striata; v. postica crescentica, umbonata, radiata, antice longi- tud. suleata; areis lateral. elevatis, sulcis radiantibus ad 6 in- sculptis ; are& centrali imbricatim sulcata ; ligamentum angustum olivaceo fasciatum, squamis minutissimis vestitum. Long. 18, lat. 9 millim. Hab. China Sea, lat. 24° N. W.S. This deeply sculptured little species resembles generally C. Siculus. C. (Chetopleura) pLumosus. ‘T. fusco-cinerea, ovata, valvis coneavis vix umbonatis; valv& anticé liris radiantibus plumosis ornata; v. posticaé parva, umbone marginali et costa submarginali utrinque notata ; areé centrali magna striis divaricantibus et striis lateralibus plumosé coadunatis ornata ; areis lateral. parvis, costa marginali finitis, striis denticulatis, interspatiis clathratis. Lig- amentum latum coriaceum, tubulis (setigeris ?) instructum. Long. 1.5, lat. .75 poll. Hab. Allied to C. celatus Rvy., which is said to be highly ornamented with green and pink. ©. Collei and C. muscosus G. belong to the same group. C. (Acanthochetes) acnatEes. T. angusta, elliptica, deluta, fuliginosa, striga flava utrinque ornata, valvis scutiformibus ros- tratis et carinatis, apicibus ebeninis glabris, alibi squamatim gran- ulata ; valv&é antica semiovali; v. posticé parva, trigona, umbone subterminali; intus glauca. Ligamentum latum spinis curtis in- equalibus et fasciculis spicularum munitum. Long. 30, lat. 20 millim. Hab. Kikaia and Hakodadi Bay. W. S. C. (Molpalia) Srovpsoni. T. tenuis, rotundato-ovata, de- pressa, fastigiata, fusca, rufo, rosaceo viridi et flavo marmorata vel lineata, concentricé striata; valvis angustis planatis; areis linea elevata finitis ; valv& antica parvula, crescentica ; v. postica mini- ma, emarginata. Ligamentum coriaceum antice valde dilatatum, 119 pilis fimbriatum. Long. 1.5 poll., lat. 1 poll. Hab. Hakodadi Bayes a Wis. Related to CO. Blainvillei, but smaller, has no perceptible radi- ating lines on the anterior valve, and is not so vividly colored. -DenrTALIuM acicuLumM. T-. modica, tenuis, levis, nitida, lactea, admodum arcuata, prope apicem longitudinaliter suleata, alibi un- dulis annulatis interdum obliquis ornata. Apertura circularis. Long. 30, diam. 3 millim. Hab. Coast of China, 23° 50’ N. in sand 25 fathoms. W. 5. DENTALIUM HEXAGONUM. T. elongata, attenuata, ossea, arcu- ata, hexagona, angulis obtusis, lateraliter compressis, interspatiis inornatis; peristomate sexangulari. Long. 55, diam. 4 millim. Hab. Hong Kong, in shelly mud. * DenTALIuM BUCCINULUM. T. modica, lactea prope apicem rubiginosa, admodum arcuatum, longitudinaliter sulcis ad 30 ara- ta, versus aperturam evanescentibus, ubi lucida. Long. 30 mill. diam. 3 millim. Hab. Kagosima. W. Ss Most nearly allied to D. curtum, but is more deeply grooved. DENTALIUM INTERCALATUM. T. parva, albida, acuta, rapide ampliata, ad apicem sulcis primum sex deinde 12 zxqualibus lon- gitudinalibus sulcata. Long. 18, diam. 2+ millim. Hab. China Seas. W.S. DENTALIUM sTRIGATUM. T. bené arcuata, albido-rubescens, sulcis amplis concavis longitudinaliter striatis ad 13 insculpta, dis- sepimentis angustis, obtusis. Long. 18, diam. 3 millim. Hab. False Bay, C. Good Hope. W. S. DentaLium porcatum. ‘T. modica, cretacea ad apicem plus minusve rubiginosa, bene arcuata, sulcis tenuibus longitud. 12 sen- sim ad 20 auctis arata. Axis 20, diam. 2.5 millim. Hab. Hong Kong Harbor. W.S. DeENTALIUM CLAVATUM. ‘T. parva, clavata, polita, tenuis fere hyalina admodum arcuata lateribus oblique undulatis, versus aper- turam valdé contracta. Long. 10, diam. 2 millim. Hab. Hong Kong; not uncommon. W. S. _This would be regarded asa Ditrupa had not Mr. Stimpson 120 . given a figure of the animal, which he assures us is a mollusk. It resembles D. coaretatum Desh. TEREBRATULA TRANSVERSA. ‘T. reniformis, distorta, trans- versa, tenuis, rufo-flavescens, punctata, costis radiantibus angu- latis ornata; valvis flexuosis, convexiusculis lateraliter angulatis ; margine cardinali recto; apice vix eminente; foramine magno interrupto; apophysi libero, imprimis exili deinde aculeo diver- gente munito, denique membranaceo et in laqueo recurvo pro- tracto. Long. 6; diam. transv. 8; lat. 4 poll. Inhabits Hakodadi Bay. a oW aise Like 7. Grayi as to form, color, and sculpture; the internal supports are much shorter, and the diverging processes and mem- branous loop are also characteristic. TEREBRATELLA MINIATA. T. magna, rhomboideo-ovalis, glo- boso-lenticularis, punctata, striis incrementi solum insculpta, min- iata; valva ventrali ventricos&, suleo mediano modico fluctuata, costa acuta mediana intus munité ; margine postico vix angulato ; valva dorsali tectiform# antice subtruncata, postice rostrata; fo- ramine modico, integro; apophysi primo gracili, dein subito late expanso et ad cristam medianam aflixo, denique reflexo et la- queam efformante. Diam. long. et transy. 1.5 poll.; alt. % poll. Inhabits Hakodadi Bay. W. 5. In size, form, and color much like T. rubra or Zelandica, but less fan-shaped and entirely destitute of radiating furrows or ribs. The surface is like 7. lenticularis, but is proportionally shorter and trilobately waved. It is, moreover, generically distinct by the union of its apophyses with the central crest. RHYNCONELLA LucipA. ‘T. subcircularis, tenuissima, lucida, dilute cornea, valvis subequalibus, ventricosis, impunctatis, sub lente radiatim striata; foramen integrum, parvum; cardo ut in Rhynconella ; apophyses ? Diameters about ¢ inch. Dredged off Japan Coast, 30° 35! N., 130° 40’ E., in 110 fathoms, sand, by Capt. Stevens, of the “ Hancock.” Might be taken for a small 7. vitrea, but is very thin and delicate, and further distinguished by its destitution of punctures. DIscINA STELLA. T. parva, discoidea, plano-convexa, ten- uis, ex apice vix eccentrico levigato demum radiatim striata ; 121 i valva inferiori postice truncata, disco rimato cardiformi ; limbo radiato, radiis filiformibus admodum articulatis ; margine ciliato. Diam. } poll. circiter. Adhering to shells dredged in the China Sea. W.S. A specimen in Mr. Cuming’s collection is much larger. Young specimens are quite destitute of radiating lines. TRICHOTROPIS ELLIPSOIDEA. ‘TT. parva, tenuis, ovata, albida, liris quadratis (interspatiis clathratis) cincta ; anfr. 6 ventricosis ; sutura canaliculata; epidermide tenui, liris ciliatis: apertura ovata, anticé acute rostrata; labro simplici, arcuato; margine columellari tenui, erecto; umbilico parvulo. Axis 10 millim. ; diam. 5 millim. Dredged in Hong Kong Bay. W. S. Has the aspect of 7. cnermis, as figured by Middendorff, but is smaller, much more elongated, and the pillar and canal are quite different. Tricuotropis (Iphinde) coronata. T. ovato-rhomboidea, turrita, tenuis, cinerea, epidermide fibroso ad carinam in fimbriam cirrosam producto induta; umbilico lato, profundo, acute margin- ato; anfr. 6+ citd créscentibus, postice tabulatis, ad angulum cari- natis: apertura ovato-triangularis, labro simplici; columella recta, antice vix reflexa, acuta, subcanaliculata: operculum ovatum, corneum, apice terminali. Long. 25 millim.; lat. 15 millim. Hab. Arctic Ocean, Straits of Semiavine, 20 fathoms, mud. Wears: May, perhaps, be 7’ ciliata, Kruger, which I have not seen. A very curious and elegant species. RINGICULA DENTICULATA. TT. ovata, acuminata, solida, lactea, striis confertis transversis (exilioribus interdum interveni- entibus) insculpta; anfr. 5 ventricosis: apertura angusta ; labro admodum incrassato intus denticulato, fere ad sinum siphonalem interrupto ; plicis acutis, transversis ; callo modico, haud appresso ; dente parietali modico. Axis 5 millim.; diam. 3.5 millim. In- habits Port Jackson, N.S. W. W.S. The numerous striw, denticulate labium, and scantiness of callus about the siphonal notch, mark this species. RinGICULA DOLIARIS. T. majuscula, tenuis, ventricosa, ovata, albida; spira acuminata, anfr. 4 rotundatis, sulcis transversis 16 - 799 remotis insculptis, ultimo amplo; suturA profund&: apertura magna, labio angusto, haud incrassato, plicis columelle tenuibus, acutis, plicAé parietali parva, tenui; callo siphonali modico. Axis 5 millim.; diam. 5-++ millim. Inhabits Hakodadi Bay, 6 fathoms, sandy mud. W.S. Peculiar from its thin lip and general want of callus. RINGICULA ARCTATA. TT. solida, ovata, acuminata, alba; spire anfr. 4+ convexis, ultimo striis volventibus (10-12) in- sculpto; sutur&é profunda: apertura auriculata, labro incrassato, intus tumido ; plicis ad columellam conspicuis; dente parietali robusto, usque ad angulum posticum aperture protracto; callo labiali lato, sinum siphonalem transeunte. Axis 4; diam. 3 millim. Inhabits Hong Kong Harbor. W. S. Allied to R. caron and propinqua, but the sculptured lines are much more crowded. Buccinum Stimpsoni. ‘T. magna, solidula, elongata, fusi- formi-turrita, cinerea vel diluté ferruginea, epidermide calcarea caduca incrustata, lineis tenuibus cincta; anfr. 6 ad 8-+- pyram- idatis, pentagonalibus, ultimo antice excavato, costa cincto ubi unde terminantur. Apertura dimidiam longitudinis teste ad- equans, anguste lunata; labro simplici; columella arcuata, cal- losa; fauce dilute castanea vel lividé. Long. 100; diam. 45 mill. Habitat Arikamcheche Island, Behring’s Straits. W. S. Dredged in Arctic Ocean. Capt. Rodgers. A quite remarkable species, allied to B. undatum, but at once distinguished by its elongated form, and its pyramidal, pentago- nal whorls with concave sides. Buccinum Ropeersi. T. ovato-lanceolata, solidula, luteo- cinerea crusta cretacea sub epidermide tenuissima induta, striis exilissimis cincta; anfr. 8 tumidulis spiram elongatam nunc un- dulatam nune zquam efformantibus, ultimo trientes duas long. metiente et in rostram satis productam sensim contracto. Aper- tura ovata dimidiam long. teste haud equans, labro evaso, postice sinuato; columella callo bene indut&i; fauce flavida vel livida. Long. 95; diam. 25 millim. Inhabits Arikamcheche Island, Behring’s Straits. W.S. Common in 20-30 fathoms, muddy gravel, Arctic Ocean, north of Behring’s Straits. Capt. Rodgers. 123 Like B. undatum the varieties are very widely contrasted as to the undulation of the surface, and but for ‘the uniformly slender growth and elongated beak might possibly have been brought under that species. NeptunEA (s. g. Sipho) TEREBRALIS. T. elongata, ovato- ~ fusiformis, rufo-cornea, externe cretacea longitudinaliter ordinatim striata, costis et fossis subzequalibus (anfr. spire ad 8) cincta ; anfr. 7-++ rotundatis superné tabulatis, ultimo trientem long. teste adequante. Apertura pyriformis, rostro modico, labro arcuato, intus denticulis submarginalibus instructo et strigis rufis costis respondentibus ornato. Axis 60 millim.; diam. 25 millim. In- habits Arctic Ocean. In general form, like WV. Icelandica excepting as to the angu- larity of the posterior part of the whorls, but clearly distinguished by the exterior ribs and grooves. The lip is broken, but there is a specimen from Spitzbergen, in good condition, in Mr. Cum- ing’s collection, from which I have taken the character of the lip. NEPTUNEA ARATA. TT. parva, ovato-fusiformis, solidula, rufo- cinerascens, striis profundis incisa et striis incrementi concinne clathrata ; anfr. 5-++ ventricosis ad suturam declivibus, undulatis, ultimo subvaricoso; sutura exili. Apertura pyriformis, dimid- iam long. teste adzequans, labro acuto, serrulato, intus denticulato ; columella subperforaté, callo rufo induté&. Axis 23 millim. ; diam. 10 millim. Inhabits ————? NepTUNEA #sTUOSA. ‘T. ovata, solida, fulvo-cinerea, sulcis angustis remotis cincta, et fluctibus obliquis ad 12 ornata; anfr. 5-++ tumidis postice carinatis et apud fluctus subnodosis, versus suturam declivibus. Apertura lunata, labro acuto intus sulcato ; columella admodum excavatéa; rostro brevi valde recurvo. Axis 45; diam. 25 millim. Inhabits Kagosima. W. S. EUTHRYA LACERTINA. ‘T. ovato-fusiformis, longitudinaliter undulata et strigis rufis ornata, ad peripheriam pallideé zonata ; anfr. 6 convexis prope suturam constrictis, et filis confertis cinctis. Apertura dimidiam long. testa adzequans, lunata, postice acuta ; labro arcuato, crenulato, intus suleato, sulcis fusco tinctis ; colu- -mella flexuosa ; rostro brevi, lato. Axis 25 millim.; diam. 10 millim. Inhabits Simon’s Bay, Cape of Good Hope. W. S. 124 tesembles Pisania D’ Orbignyi or P. maculosa ; but the fur- rows’ within the lip, want of posterior callus, and shortness of canal, as well as general form, distinguish it. PisaANIA MOLLIS. T. elongata, ovato-rhomboidea, subtenuis, cinerea, epidermide duracino induta; anfr. 6 convexis vix plica- tis, posticis spiraliter filosis, filis antice liras duas efformantibus ; anfr. ultimo ? long. teste, liris anticé ad 8 et liris numerosis minoribus posticis cincto; sutura profundaé. Apertura angusta, ovata; labro acuto denticulato ; faufce suleata, livida; columella vix callosa; rostro satis elongato. Axis. 22 millim.; diam. 12 millim. Inhabits Simoda. W. S. Fusus mopestus. ‘T. parva, elongata, ovato-lanceolata, ru- dis, fusco-cinerea, longitud. undulata (undis ad 19) et liris con- spicuis ad 5, minoribus intervenientibus cincta; striis incrementi lamellosis ; anfr. 7 tumidulis. Apertura ovata dimidiam longit. teste haud equans; labro simplici intus subsuleato; fauce cas- tanea. Axis 25 millim.; diam. 6 millim. Inhabits Hakodadi, in 10 fathoms, shelly sand. W. S%. PERISTERNIA FENESTRATA. ‘T. parva, fusiformis, flavido- rubescens, liris exilibus confertis cincta, interspatiis concinne clathratis, longitud. vix plicata, liris binis sutures propinquis ma- joribus alveolas efformantibus; anfr. 6 convexis, ultimo antice constricto; sutura profund&. Apertura ovata dimidiam longitud. teste adeequans; labro concinne crenato, intus sulcato; columella callo erecto anticé indut&i; rostro feré clauso. Axis 13 millim.; diam. 6 millim. Inhabits Simon’s Bay, Cape of Good Hope. W. S. Only a single specimen was found; quite remarkable for the contraction about the beak, and the embrasure-like pits near the suture. PERISTERNIA INCULTA. ‘TT. parva, solida, fusiformis, rufa ; anfr. 8 convexis ad suturam declivibus liris inaequalibus cinctis et fluctibus ad 7 ornatis, ultimo vix dimidiam longitudinis zquante, costa basali inconspicuaé in dentem ad labrum producta ; rostro gracili contorto. Apertura rotundato-ovata ; labro crenulato intus denticulato; columella leviter plicata; fauce lutea. Axis 25 millim.; diam. 12 millim. Inhabits ? 125 In the young stage, there is a long, delicate spine on the outer lip, as in Leucozonia, which becomes obsolete with age. SISTRUM PARVULUM. TT. parva, ovato-rhomboidea, fusco- cinerea, longitudinaliter ad 9-plicata et costis 5 nodulosis cincta ; anfr. 5 angulatis, supernis erosis, costa unica nodulosa cinctis. Apertura angusta, lunata, dimidiam longitudinis teste adequans ; fauce fuscescente; labro fusco maculato intus albo-dentato ; columella polita. Long:-12; diam. 7 millim. Habitat Simon’s Daye ow. oO: The color and nodulations are much as in S. tuberculatum, but the form is more rhombic, and the size much less. NaAssARIA cuRTA. T. parva, elongata, ovato-rhomboidea, solidula, straminea ante suturam pallidior et fulvo maculata; anfr. 6-+ ventricosis filis ad 8 volventibus et plicis ad 15 longitud. ornatis. Apertura angusta ovalis; labro incrassato intus dentic- ulato; lamina columellari erecta; rostro modico, recto: Axis 10; diam. 6 millim. Inhabits Port Jackson. W. S. It is smaller than any species in the Cuming Collection, and has a short beak. It is like WV. carduus, Rv., but has more delicate waves. Murex (Ocinebra) mverosus. T. parva, rudis, rhomboideo- fusiformis, lineis incrementi muriculata, cinereo-fulvida, strigis et fasciis obscuris rufescentibus et cingulo albido ornata; anfr. 6-- medio angulatis posticé excavatis vel declivibus, anticé plicas 7 ad 8 tuberculosas gerentibus, filis inzequalibus numerosis ubique cinetis quorum duobus anterioribus majoribus. Apertura dimid- iam longitud. testa adwquans, angusta, ovato-rhomboidea ; labro denticulato intus inerassato et sulcato; fauce citrinad vel livida ; columella polita ; rostro subperforato. Axis 25; diam. 12 millim. Inhabits China Seas, in sand, 25 fathoms. W. S. Much like O. buxeus, but shorter. TrRorHON INcoMpTUs. T. ovato-trigona, solida, rudis, cine- rascens; spira turrita, anfr. 6 angulatis posticé tabulatis, ultimo ventricoso, trigono, liris inaequalibus (tribus majoribus) cinctis, longitudinaliter undulis inordinatis et laminis incrementi instruc- tis. Apertura ovata posticé rotundata; labro simplici papillis 126 paucis intus instructo; canali brevi recurvo fere clauso; fauce eastanea. Axis 30 millim.; diam. 16 millim. Inhabits Hako- dadi. W.S. Closely allied to 7. crassus, which has the suture channelled and the lip dentate; young specimens have the laminz quite prominent, with small spines at the angles. TropHon suppositus. T. pyriformis, turrita, tenuis, sordidé alba, laminis erectis remotis clathrata, interspatiis concavis levi- bus; anfr. 6 convexis postice tabulatis ; ultimo bulboso antice in rostrum tenuem recurvum protracto. Apertura ovata 2 longit. testee adequans; columella porcellana. Axis 30 millim.; diam. 15 millim.; aperture long. 20 millim. Inhabits ————? Triton (Monoplex) rossatum. T. solida, subglobosa, flavida ; spira brevis, anfr. sex fossa lat& profunda sejunctis et costulis duabus cinctis (costulis strid mediana impressis ) et undulas longi- tudinales noduliferas remotas gerentibus: apertura angusta, per- obliqua postice rotundata ; labro varicoso, denticulato intus sulcato ; labio erecto sulcato, sulco postico majori; rostro brevi. Axis 35; diam. 30; apert. 20 millim. Habitat, Hong Kong. W. S. Like 7. canaliferus this would be at once noticed for the deep sutural channel; but it is altogether of a short, ventricose form, with a very short canal. It approaches, in form and sculp- ture, to Z. doliarius, which lacks the canal and has a longer beak. TEREBRA BIPARTITA. ‘T. parva, subulata, gracilis, tenuis, ni- tida, ubique stris exilibus confertis cincta, et plicis modicis flexuo- sis ad 15 munita; anfr. 14 convexiusculis postice leviter instrictis, postice flavidis antice castaneis, ultimo filo flavo cincto: apertura lunata; rostro curto, lato. Axis 15; diam. 4+ millim. Inhabits Hakodadi Bay, 20 fathoms. W. S. TEREBRA ARGUTA. TT. parva, gracilis, turrita, ad apicem lan- ceolata, ex stramineo rubescens ; anfr. 12-++ convexis, plicis ad 20 eminentibus acutis, ad interspatia lineis volventibus impressis et postice stria profunda incisis ; ultimo antice cancellato ad ros- trum constricto: apertura perangusta, flexuosa; columella vio- laced. Axis 25; diam. 5 millim. Inhabits Porto Praya. W. S. Closely allied to 7. violascens, Hinds, from New Guinea. 127 TEREBRA PROLIXA. T. modica, subulata, subtenuis, nitida ; anfr. 16 conicis, plicis ad 20 acutis parum elevatis ornatis, postice strid volvente incisis ; colore dilute fulvo vitta rufa demum eva- nescente et vitta pallida angulo postico aperture exeunte ornato: apertura ovata; columella contorta rufa. Axis 33; diam. 8 mil- lim. Off China Coast, in 25 fathoms, sandy. W. S. A distinctly fluted species. 7. amena is smaller, shorter, and differently colored. NassA SUFFLATA. TT. ovato-conica, ventricosa, subtenuis, cinerascens, fusco prope suturam tessellata etiam hic illic macu- lata, striis volventibus paucis antice et striis binis postice insculp- ta: spira acuta, turrita; anfr. 7-++ posticis plicatis, ultimo amplo: apertura lata; labro acuto, serriculato; columella vix callosa. Long. 22; diam. 12 millim. Inhabits Hong Kong Harbor. Ka- gosima. W.S. , Allied to NV. dispar and N. mutabilis. NassaA BEATA. ‘T. parva, ovato-conica, solida, polita, grisea fulvido vittata, costis acutis ad 15 strié subsuturali incisis ornata, interspatiis concavis, anfractu ultimo ad dorsum simplici antice striis 83-4 cincto: apertura parva angusta; labro incrassato intus profunde sulcato; columella callosa, plicato-granulosé. Axis 10; diam. 6 millim. Inhabits Loo Choo, in 18 fathoms, sandy. WS: Very near to WV. optata, which has a beaded rather than a fluted surface; and the lip and pillar of the aperture are un- armed. Nassa rEposta. ‘T. solida, ovato-conica, rudis, cinerea, plicis inconspicuis 12—14 demum carentibus, et filis remotis (superne 4) ornata; anfr. 7 convexis postice sub-angulatis: apertura ampla rotundato-ovata; labro incrassato expanso intus denticulato; colu- mella valde arcuata lutea, vitrea; fauce fusco-rufa postice luteo- fasciata. Axis 12; diam. 7 millim. Inhabits Sydney, N.S. W.? NaAssA MUSTELINA. T. parva, elongata, ovato-conica, polita, livida maculis pallidis fusco marginatis variegata, ad anfractum ultimum postice et antice vittis pallidis (marginibus articulatis) et lineis binis medianis usque ad labrum acutum pallidum prolongatis 128 cincta; anfr. 8 convexis elevatis: apertura ovata; labro acuto pallido intus polito ; rostro pallido; columella arcuata porcellana ; fauce livid vittis binis pallidis ornaté. Axis 12; diam. 8 millim. Inhabits Ousima, off the coast, in 2 fathoms, coarse clean sand. W.S, Allied to VV. zonalis, but is much larger. Nassa QuANTULA. T. parva, subtenuis, ovato-globosa, rufo- albida ; anfr. 6 convexiusculis, plicis ad 12 et filis confertis vol- ventibus quorum uno postmediano rufo ornatis: apertura ampla rotundato-ovata ; labro extus incrassato. Axis 7; diam. 3 millim. Inhabits St. Simon’s Bay. W.S. Nassa opTaTa. T. subtenuis, ovato-conica, acuta, polita, albida demum ferrugineo variegata ; anfr. 7 convexiusculis ad 12- plicatis, plicis ad anfr. ultimum tandem carentibus, striis volven- tibus 5 quorum presuturali profundiore gemmulas efformante secantibus ; sutura profundaé: apertura laté ovalis; labro intus levi, extus incrassato rufo variegato ; columella admodum callosa. Axis 10; diam. 6 millim. Inhabits Sydney Harbor. W. 58. Very closely resembles the figure of WV. Gayi of the Conch. Iconica, which, however, is believed to represent a larger and more ventricose shell than that of Kiener. NassA DERMESTINA. T. parva, elongato-ovata, postice acuta, cinerea; anfr. 7 rotundatis 15-16 plicatis et filis ordinatim cinc- tis; suturé impressi: apertura parva, rotundata; labro incras- sato intus denticulis et sulcis instructo ; columella excavata leviter plicata. Axis 8; diam. 4 millim. Inhabits Kikaia. W.S. Nassa PLEBECULA. T. parva, solida, elongata, ovato-conica, albida; anfr. 8 sutura profundé sejunctis, plicis ad 16 ornatis plerumque ad anfr. ultimum carentibus, et filis nitidis rufescenti- bus ad 5 cinctis quorum uno majore : apertura parva, subrotunda ; labro albo intus denticulato et sulcato, extus late incrassato, fusco maculato; rostro abbreviato. Axis 15; diam. 7 millim. Inhabits Ousimas “Wis. More slender than N. ambigua and dnerassata, but closely allied. NASSA PEDICULINA. T. parvula, solida, ovato-conica, rudis, 129 straminea, plicis ad 12 elevatis et filis rufescentibus 5 ad plicas dilatatis ornatis; anfr. 7 convexis, apicalibus simplicibus, ultimo antice coarctato ; sutura profund&: apertura subcircularis ; labro obtuso, extus incrassato; columella callo erecto instructa 3 sinu siphonali profundo. Axis 6; diam. 4 millim. Inhabits Hong Kong Harbor. W. S. Most noticeable for its large folds, unfinished aspect, and con- striction about the beak. Nassa spurca. T. parva, acuta, ovato-conica, cinerascens vel rufescens linea spirali flavida cincta, plicis numerosis et filis supercurrentibus ubique cancellata ; anfr. 7 ventricosis : apertura parva rotundata; labro extus incrassato, intus suleato; columella arcuata, callo fuscescente sparsim granulato induta; fauce fusco vittaté. Axis 10; diam. 6 millim. Inhabits St. Simon’s Bay, in 12 fathoms, sandy. W. S. The fine rasp-like surface and dusky aspect, with the single pale belt, distinguish it; somewhat like a small NV. trivittata. This and the preceding belong to the subgen. Tritia, Adams. MITRA JACULANDA. T. parva, symmetrica, fusiformis, cine- reo-rubescens fusco diluté nubeculata, sulcis longitudinalibus fer continuis et lineis volventibus levioribus (8) anticis sensim remo- tioribus clathrata; anfr. 7 rotundatis, ultimo 2 longitud. testa adeequante ; sutura exili: apertura angusta ; labro intus denticu- lato; columella 4-plicaté. Axis 8; diam. 2.5 millim. Inhabits China Seas. W. S. Allied to MZ recurva, Rv., but the sculpture is much more delicate. Mirra sECALINA. TT. minuta, fusiformis, obtusa, impolita, fulva; anfr. 6, apicalibus secundis, levibus, ceteris striis exilibus longitudinalibus et transversis quadrulas efformantibus ubique or- natis; sutura tabulata: apertura angusta, postice quadrata ; labro acuto, exigué crenulato, intus denticulato; columella 3-plicata. Axis 6; diam. 3 millim. Inhabits Ousima. W. S. Mirra Russa. T. parva, elongato-ovata, castanea vel auran- tiaca, nitida, plicis ad 14 ad anfractum ultimum solum expositis, et striis exilibus ad interspatia ornata; anfr. 6 admodum con- 17 130 vexis, apice mamillato, ultimo anticé instricto, et lineis volventibus cincto: apertura anguste lunata prorsum dilatans; labro acuto ; columella 4-plicataé. Axis 6; diam. 3 millim. Inhabits China Seas. W.S. CoLUMBELLA BALTEATA. T. minuta, rhomboidea, elongata, nitida, straminea vitta fulva cincta; anfr. 7 tribus posticis sim- plicibus, ceteris lyratis et lined subsuturali impressis, interspatiis transversim striatis: apertura anguste lunata; labro simplici. Axis 4; lat. 2 millim. Inhabits China Seas. The cutting of the folds by the subsutural line forms a circle of beads. This and the following eight species belong to the subgen. Anachis H. & A. Adams. CotumBeLLa (Anachis) NEBULOSA. TT. parva, elongato- ovata, turrita, nitida dilute flavida saturatiori variegata; anfr. 8 tabulatis convexiusculis lined suturali et undulis ad 20 ornatis, ultimo dimidiam longitud. teste superante, postice solum undu- lato, striis volventibus retrorsum decrescentibus insculpto: aper- tura trientem longitudinis teste adequans, lunata. Axis 6; lat. 25 millim. Inhabits China Seas. W. S. CoLumBrLLA (Anachis) porsuosa. T. parva, elongata, ovato-fusiformis, nitida, cerina, vitta rufa presuturali, altera ros- trum circumambiente variegata, plicis 7 et striis tenuibus trans- versis ornata ; anfr. 8 convexiusculis postice abruptis: apertura lunata antrorsum angustata; labro acuto. Axis 7; lat. 3 millim. Inhabits Hong Kong. W. S. CoLtuMBELLA (Anachis) minuTA. T. minuta, ovata, tur- rita, straminea, plicis acutis (12) apud strias rostrum cingentes repente terminantibus insculpta; anfr. 6 bene discretis: apertura trientem longitudinis testae pene adaequans, satis lata; labro intus modice gibboso. Axis 2.5; diam. 1 millim. Inhabits China Seas. W.S. Allied to C. parva, Sowb., which is less slender, and has a brown sutural band. CoLuMBELLA (Anachis) zonatTa. T. minuta, fusiformis, nitida, cerina, vitté subsuturali castanea et altera basali latiori 131 cincta, plicis flexuosis 10-12 ornata; anfr. 6 postice instrictis, ultimo ad rostrum elongatum subito contracto: apertura angusta ; columella valde arcuata ; labro acuto, simplici. Axis 3; diam. 2 millim. Inhabits Kagosima. W. S. CoLuMBELLA (Anachis) FuLMINEA. TT. parvula, ovato-lan- ceolata, nitida, castanea lineis angulatis flavidis varie dispositis, et plicis flexuosis demum disparentibus ornata ; anfr. 6 convexis ultimo antice striis cincto: apertura angusta, dimidiam longitudi- nis teste vix adzquans, postice rotundata ; labro simplici postice leviter incrassato, intus leevi; fauce purpurascente. Axis 7 ; diam. 3 millim. Inhabits St. Simon’s Bay. W. S. The folds are unusually distinct and prominent. CoLuMBELLA (Anachis) ATRATA. T. minuta, crassa, ovato- lanceolata, anthracina, antice striis cincta; plicis acutis ad 12 an- tice obsolescentibus ; anfr. 6 tumidis, modicé tabulatis : apertura angusta postice acuta; labro simplici posticé sinuoso, intus vix denticulato ; fauce atrata. Axis 5; diam. 2 millim. JInhabits Hong Kong Harbor. W. S. CoLUMBELLA (Anachis) mMinuscuLA. ‘TT. minuta, crassa, elongata, acuminata, fusca; anfr. 7 convexiusculis vix discretis, plicis tenuibus rectis interdum anticé obsoletis clathrata: apertura perangusta, dimidiam longitud. testes adaquans, postice acuta ; labro arcuato, acuto, simplici, intus granulato ; columella arcuata, callo modico indutéa. Axis 4; diam. 1.5 millim. Inhabits Ousi- ma. W.S. Though so small, its characters are well marked. A variety is thinner, horn-colored, with two dark revolving threads. COLUMBELLA ALTERNATA. TT. minuta, elongato-ovata, nitida, straminea maculis elongatis rufis interrupte vittata, ad anfractum ultimum duplicatis ; anfr. 5, plicis ad 12 eminentibus obtusis et striis anticalibus volventibus ornatis: apertura curta, angusta ; labro incrassato intus crenato. Axis 3; diam. 1.5 millim. In- habits Hong Kong. W. S. Sufficiently designated by its stripes of elongated spots arranged on alternate folds. COLUMBELLA VirGiINEA. T. minuta, rhomboideo-fusiformis, 132 lactea, plicis (14) et anticé striis paucis munita; anfr. 6 tabulatis et linea subsuturali insculptis, ultimo 2 longitud. testa adeequante antrorsum angustato et admodum recurvo: apertura perangusta, flexuosa ; labro edentato ; columellz callo erecto. Axis 4; diam. 1 millim. Inhabits China Seas. W. S. This small species has the principal characters of the genus Pyrene, Bolten. CoLUMBELLA BICINCTA. ‘TT. parva, ovata, turrita, tenuis, levis, cinerascens fulvo bicincta; anfr. 8 convexiusculis; sutura im- pressa : apertura lunata; labro arcuato, acuto intus denticulato ; columella violacea, callo tenui, anticé tuberculato. Axis 10; diam. 4+ millim. Inhabits Hong Kong Harbor, 10 fathoms, _ Shelly sand. W. S. This species and the three succeeding belong to the genus Amycla, H. & A. Adams, more especially to the subgenus As- tyris. COLUMBELLA LINEOLATA. TT. parva, ovato-lanceolata, crassa, polita, straminea filis 4 fulvis cincta (ad anfr. ult. 8) ; anfr. 8 con- vexis, apicalibus plicatulis, ultimo 3% longitud. testa adeequante anticé striis cincto: apertura lunata; labro tenui postice sinuato, intus denticulato; callo columellari copioso; canali curto, lato. Axis 10; diam. 4 millim. Inhabits Hong Kong. Very closely resembles C. lactea, Sowb. CoLUMBELLA DECOLOR. T. parva, ovato-lanceolata, polita, straminea ferrugineo interdum maculata; anfr. 6-++ convexis, apicalibus concinné plicatis, ultimo antice striato: apertura satis ampla ; labro tenui anticé subitd incurvato intus denticulato ; colu- mella concava denticulo acuto postice munita; canali curto, an- gusto. Axis 9; diam. 4 millim. Inhabits Loo Choo. W. S. COLUMBELLA ARANEOSA. T. parva, ovato-lanceolata, levi- gata, fulva albido exiliter reticulata et hic illic maculata; anfr. 8 convexiusculis subtabulatis, apicalibus inornatis, ultimo subangu- lato antice striato: apertura angusta, postice rotundata; labro simplici, arcuato, violaceo tincto, intus denticulato ; callo columel- lari copioso, everso, absque denticulo. Axis 10; diam. 4 millim. Inhabits Kagosima Bay and China Coast. W.S. Generally resembles (. austrina, Gask., except in color. 153 CoLuMBELLA (Strombina) puNGENS. T. parva, lanceolata, polita, ex stramineo fulvescens antrorsum pallescens, plicis nume- rosis ornata; anfr. 10 conicis, ultimo gibboso subitd constricto ibi spiraliter striato ; sutura impressa: apertura angusta; labro pos- tice sinuato, incrassato, antrorsum attenuato; columelle callo in medio extruso, postice sinuato; rostro longo, recurvo. Axis 10; diam. 4 millim. Inhabits Port Lloyd, Bonin Islands, com- mon. . WV. S. A miniature representation of C. angularis, Sowb. DriILLIA VALLATA. T. parva, lanceolata, lurida; anfr. 10 posticé abruptis, quisque carinam marginalem et fila (1—2) inter- currentia gerens; interspatiis concinne clathratis; anfr. ultimo subventricoso, filis ad 10 cincto, additis duobus minoribus in sinu terminantibus: apertura 3 totius longitudinis, angusta ; labro ex- stante, sinu lato, profundo; columella levi; rostro brevi, lato. Axis 9; diam. 8 millim. Inhabits vicinity of Hong Kong, in 10 fathoms, shelly mud. W. S. Allied to D. violacea. Dri“Liia RECIPROCA. T. parva, lanceolata, flavescens retror- sum lutescens et obscure stringata; anfr. 10 convexiusculis, 4-5 carinatis (ult. anfr. 10-12) carina: mediana eminentiore, interspa- tiis clathratis, clathris intervalli postici alteris contrarié obliquis : apertura } totius longitudinis ; labro valde producto; sinu lato, profundo ; rostro brevi, lato, contorto. Axis 12; diam. 4 millim. Inhabits Ousima. W. S. Much like the preceding ; but the color and relative size of ca- rine are different. DRILLIA EBOREA. ‘T. parva, solida, lanceolata, ex eburneo lutescens, striis exilissimis transversis ubique insculpta ; anfr. 8-++ supernis plicatulis, ultimo 4 totius longit. teste: apertura lu- nata; labro simplici, crasso, antice angulato; sinu crescentico ; columella callo erecto munita; rostro brevi, reflexo; canali an- gusto fere clauso. Shell small, solid, lanceolate, yellowish white, everywhere densely and faintly grooved by transverse lines, most so near the sutures, apicial whorls longitudinally folded; whorls 8++, the last quite half the length of the shell: aperture narrow, lunate, 134 placed somewhat laterally ; lip thick, simple, with a slight sinus near its posterior junction; pillar with a thick, erect callus, quite thick posteriorly ; rostrum reflexed. Axis 14 millim.; diam. 4 millim. Inhabits Kikaia Island. W. S. This is a singular species, in structure much like Clavatula felina, Hinds, but in its aperture and canal approaching to Klein’s section Hpidromus of the genus Triton. BeLa TURGIDA. T. parva, crassa, ovata, lactea, epidermide corneo fugaceo induta, sulcis numerosis (28) longitudinaliter arata, interspatiis duplo latioribus et striis confertis transversis insculptis anfr. 6 curtis, ventricosis ; sutura profunda’: apertura ovata di- midiam totius longitudinis brevior ; labro simplici arcuato ; colu- mella planulata, porcellana ; rostro angusto, curto. Axis 10; diam. 5 millim. Inhabits Kamtschatka. W. S. CLATHURELLA PEREGRINA. T’. ovato-fusiformis, solida, obscure fulva, plicis obtusis ad 18, filis transversis (ubi plicas decussanti- bus dilatatis) ornata; anfr. 64+ ventricosis : apertura 2 totius lon- gitudinis lunata, postice rotundata ; labro acuto intus lamellato ; canali brevi, angusto abrupte incepto. Axis 12; diam. 5 millim. Inhabits Sydney Harbor. Closely allied to C. assimilis, but less colored, and the striz less crowded. CLATHURELLA ASPERSA. ‘TT. parva, lanceolata, gracilis, cine- rea ferrugineo-maculata, plicis 15-18 flexuosis filis ad 6 transeun- tibus clathrata ; anfr. 8 perobliquis. convexis posticé paullum con- strictis, ultimo 4 totius longitudinis antrorsum acuminato, plicis et filis omnino ornato: apertura lanceolata; labro incrassato, inflecto, intus levi; sinu lato, profundo; rostro elongato. Axis 14; diam. 4 millim. Off Hong Kong, in 15 fathoms, shelly sand. W.S. CO. Guildingii, Rv. may be the same described from a small specimen. CLATHURELLA FILOSA. TT. ovata, turrita, tenuis, cinerea lineis rufis cincta, plicis flexuosis ad 16 suturam postice haud attigentibus, et filis transversis 6 ad plicas dilatatis ornata; anfr. 10 ventricosis, tabulatis, ultimo antice constricto: apertura late lunata; labro admodum arcuato ; sinu juxta suturam, haud profundo; columella nuda. Axis 20; diam. 10 millim. Inhabits Ousima. W. 5S. 135 CLATHURELLA RUBICUNDA. ‘T. minuta, crassa, ovato-turrita, diluté rosacea filis pallidioribus linea saturatiori divisis et vitta subsuturali pallidiori ornata; anfr. 64+ ventricosis citd crescenti- bus, undulis 10 et filis transversis (ad anfr. penult. 6) clathratis: apertura curta, angusta; labro tumido intus denticulato ; sinu an- gusto, profundo ; columella flexuosa; canali brevi. Axis 5; diam. 2 millim. Inhabits Loo Choo. W. 5S. , CLATHURELLA LACUNOSA. ‘T. minuta, crassa, ovata, testacea, clathris et filis transversis eminentioribus cancellata, cancellis quad- ratis profundis ; spira obtusa, anfr. 6 angulatis postice excavatis: apertura dimidiam totius longitudinis, anguste lunata; labro in- crassato intus levi; sinu minime profundo; columella flexuosa. Axis 5; diam. 2.5 millim. Inhabits Hong Kong Harbor, in 10 fathoms, shelly bottom. W. S. CLATHURELLA AMPLEXA. T. parva, fusiformis, albida fusco (ad anfractum ult.) fasciata, plicis acutis flexuosis ad 10 et striis numerosis confertis (quorum duz juxt& suturam majoribus) in- sculpta; anfr. 10 convexiusculis, declivibus, ultimo rhomboideo ; sutura profunda, crenulaté: apertura late lunata; labro tenui; sinu lato, minimé profundo. Axis 9; diam. 3 millim. Inhabits Simon’s Bay, in 12 fathoms, sandy bottom. - W. 8. Possibly C. lirata, which it certainly resembles. DAPHNELLA DELUTA. T. parva, tenuis, fusiformis, flavescens maculis ferrugineis zonata, striis elevatis exigué reticulata, trans- versis aliquid majoribus; anfr. 7-++ convexiusculis elongatis: apertura longa angusta posticé acuta; labro inflecto intus denticu- lato; sinu valdé profundo; canali brevi, lato ; columella protracta in medio tumida. Axis 20; diam. 5 millim. Inhabits China Seas. W.S. CyTHARA Lota. T. parva, ovato-rhomboidea, crassa, alba, plicis acutis ad 12 lyrata et striis profundis (prasuturali aliis ma- jori) cincta ; anfr. 4 spiram abbreviatam efformantibus, ultimo antrorsum declivi: apertura angusta, dimidiam totius longitudinis excedens; labro crasso, inflecto, intus dentato; sinu profundo ; columella suleis obliquis ad 7 insculpté. Axis 5; diam. 3 millim. Inhabits China Seas. W. S. 136 CLAVATULA PUNGENS. T. parva, fusiformis, cinerea, plicis acutis ad 20 antice evanescentibus et liris 10-12 (quarum post- suturali majori) plicas undulatim supereuntibus ornata ; anfr. 7-+ rotundatis, ultimo in rostrum gracilem desinente: apertura parva, pyriformis 4 totius longitudinis teste ; labri sinu angusto, minime profundo. Axis 9; diam. 3 millim. Inhabits Hong Kong Harbor, in 10 fathoms, shelly sand. W.S. This shell has the aspect of Clavatula, and is very like to C. debilis, Hinds ; but as the operculum principally characterizes that genus, the generic place must be uncertain. MANGELIA PURA. ‘T. parva, subgibbosa, fusiformis, lactea filis exilissimis confertis versus apicem subgranulatis cincta ; anfr. 6-- convexiusculis, ultimo maximo rhomboideo, elongato ; sutura line- ari: apertura angusta, ovalis; sinu profundo fere clauso; labro simplici quadrato ; canali recto; rostro sine constrictione. Axis 7; diam. 2 millim. Inhabits Hong Kong Harbor. W.S. This might perhaps come under the genus Cythara. MANGELIA INTAMINATA. ‘TT. parva, solida, fusiformis, corallina, plicis tenuibus acutis ad 12 lyrata, et filis ad 5 quorum mediani crassiori cincta; anfr. 6+- convexiusculis, ultimo rhomboideo, 4 totius teste superante, antice constricto, filis 10 (quorum uno post constrictionem majori) cincto: apertura angusta; labro incrassato, crenulato, antice excurvato ; sinu parvo. Axis 7; diam. 3 millim. Inhabits China Seas. W.S. MANGELIA ALBICINCTA. T. minuta, elongata, ovato-turrita, diluté rosacea, ad 11-undulata et filis ubique cincta (4 ad anfr. ultimum quorum tertio albo) ; anfr. 7 rotundatis, apicalibus inorna- tis: apertura angusta, sigmoidea; labro varicoso intus 4-denticu- lato; sinu angusto, minime profundo; rostro brevi. Axis 4; diam. 2 millim. Inhabits Loo Choo Seas. W.S. MANGELIA GLAREOSA. T. minuta, rhomboidea, turrita, crassa, calcarea, plicis elevatis ad 12 et liris transversis ordinatis quicquid minoribus ornata, inde granulata; anfr. 5+ tabulatis: apertura angusta, postice acuminata, 4+ totius longitudinis vix brevior ; labro crasso, crenulato; sinu minime profundo. Axis; diam. 2 millim. Inhabits Hong Kong Harbor, in 10 fathoms, shelly bottom. W. 8. 137 MANGELIA LUTEA. T. minuta, acicularis, aurantiaca, plicis 8 conspicuis postice suturam haud attigentibus, et striis minime impressis ad interspatia ornata ; anfr. 7 planulatis postice tabula- tis, apicalibus inornatis, ultimo thomboideo 4 totius longitudinis adequante: apertura angusté ovalis; labro simplici, incrassato, quadrato ; sinu lato, brevissimo. Axis 5; diam. 2— millim. In- habits Loo Choo Seas. W. S. MaNGELIA DEMpsTA. T. minuta, brevis, rhomboideo-fusifor- mis, lactea, plicis conspicuis ad 8, et filis volventibus crassis ornata ; anfr. 6 castellatis postice angulatis, ultimo } totius longitudinis ~ gequante: apertura linearis; labro acuto postice incrassato ; sinu brevi, lato. Axis 3; diam. 1 millim. Inhabits China Seas. W.S. Remarkable for its elongated rhomboidal form and coarse sculpture. MANGELIA sEmrAssa. T. rhomboideo-fusiformis, crassa, nitida, albida antice livida, 8-plicata et striis exilissimis volventibus insculpta; anfr. 6 angulatis; suturaé impressd: apertura 3 totius longitudinis, pyriformis, antice acuminata ; labro simplici incras- sato; sinu vix notato; columella recta, livida. Axis 8; diam. 3 millim. Inhabits ? MANGELIA TETRAGONA. T. acicularis, turrita, quadrangu- laris, (angulis compressis), lactea, striis subtilissimis confertis trans- versis insculpta; anfr. 6 pyramidatis, apicali mamillato : apertura 4 totius longitudinis, satis ampla; labro incrassato postice angu- lato. Axis 6; diam. 2 millim. Inhabits China Seas. W. S. MANGELIA CONCINNA. T. tenuis, elongato-ovata, turrita, ni- tida, striis exilissimis transversis insculpta, straminea maculis quadratis ferrugineis juxta suturam, deinde vitta angusta alba, denique fasciis et lineis rufescentibus picta; anfr. 8 postice decli- vibus, supernis strigatis: apertura } totius longitudinis, angusta ; labro tenui; sinu fere desiderato; columella rotundata, polita ; canali lato brevissimo. Axis 10; diam. 4 millim. Inhabits Loo Choo. W.S. OLIVELLA spreTA. T. parvula, elongato-ovata, livida, strigis flexuosis longitudinalibus flavidis picta : spira admodum elevata ; 18 138 anfr. 4; sutura canaliculata: apertura 2 totius longitudinis cito dilatata; columella plicis eminentibus bifidis rufis munité. Axis 6; diam. 3 millim. Inhabits Hong Kong Harbor, in 10 fathoms, shelly sand. W. S. Most like O. mutica, but the pillar lip differs. Genus /Esopus. Animal albidum; solea antice emarginata, postice obtusé operculum corneum flabelliforme gerente; capite parvo ; vibraculis curtis obtusis ; oculis externis medianis ; siphone lato, brevissimo. Testa fusiformis, gibbosa, antice late truncata; apertura lunata, angulo postico callo impleto; columella simplici vitreo induta; sutur&é prope aperturam abnormaliter arcuata. The curious curve of the suture near the posterior angle of the aperture, as if it had been drawn backward, thereby pulling back this angle and curving the last whorl downward, is very pe- culiar. The form and aspect of the shell, and the structure of the animal, indicate its place to be intermediate between Jhtra and Columbella. /E. JAPponrIcUS. TT. parva, solidula, castanea, prope suturam pallescens, striis volventibus incisa; anfr. 7 tumidulis, posticis plicatulis, ultimo ovali, laté truncato, 3 totius long. teste ade- quante: apertura lunata; peritremate reflexo ; columella lamina vitrea lata suberecta induté. Axis 7; diam. 2 millim. Inhabits Kagosima Bay, at 5 fathoms, sandy bottom. W. S. The only species as yet found, but quite peculiar enough to distinguish it from all other shells. This very distinct genus, both as to shell and animal, plainly belongs to the family Amphiperaside, having the form and lip of Ovula, while the base is traversed by sharp transverse ridges, as in Cyprea, passing over the pillar into the aperture. The broad and short tentacles, the position of the eyes, and the long, obtuse foot of the animal, are quite peculiar. Genus Critue. Animalis discus elongatus, anticé truncatus, angulis vix productis, posticé obtusus ; collum dimidiam latitudinis disci, antice bifurcatum ; tentaculis brevibus triangularibus, oculis minutis externis, basalibus. Testa porcellana, convoluta, utrinque rostrata: apertura angusta, arcuata; labro simplici; ventre laminis transversis acutis totus arato. 139 CrirHe atomaRIA. T. minutissima, lactea, ovularis, levigata : apertura coarctata, laminis ventralibus ad octo. Axis 0.5; diam. 0.3 millim. Inhabits the China Seas. W. S. Shell very minute, milk-white, glossy, ovate, somewhat acute at extremities, most so at summit, where there is a delicate groove ; aperture very narrow and uniformly so; rostrum short, slightly recurved; ventral lamin directly transverse, about eight in num- ber, and, as theypass into the aperture, giving the appearance of coarse denticles on the pillar. This peculiar little shell is the only one of the genus yet ob- served. The animal is citron-colored, the viscera slate-colored, the eyes reddish black, very small. PERSICULA TANTILLA. TT. minuta, oliviformis, candida, polita: spira occulta: apertura linearis anticé vix dilatata; labro apicem paullo superante, simplici acuto ; columella plicis obliquis acutis 5 munita. Axis 3; lat. 1.5 millim. Inhabits China Seas. W. S. It has the form of P. imbricata. MarGinevia (Glabella) Lerma. T. minuta, ovato-trigona, tenuis, polita, lactea: spira elevata lateribus concavis ; anfr. 3: apertura angusta ; sinu postice parvo ; labro inerassato concinne crenulato; columella denticulis acutis 4, postico minimo, et plica siphonem circumambiente instructéa. Axis 3; diam. 2 millim. Inhabits China Seas. W. 5S. Allied to JZ. levis. MARGINELLA SEMINULA. T. minuta, ovoidea, polita, tenuis, lactea : spira obtusa, vitro codperta: apertura antrorsum dilatata, posticé rotundata ; labro simplici postice subsinuato et in plicam posticam columelle desinente; plicis 4 perobliquis; columella nuda. Axis 4; diam. 3 millim: From a Gorgonia in False Bay, Cape of Good Hope. W. 5. Foot of the animal twice as long as the shell, truncate in front, dilated at sides, lanceolate and carinate posteriorly; mantle not enveloping the shell; tentacles long subulate; eyes lateral near the base of vibracula. The shell belongs to the section Prunum of Martini. VoLVARINA PUELLA. T. parva, ovato-cylindracea, subflex- uosa, polita, ex eburneo flavescens: spira depresso-conica ; anfr. 140 4, ultimo elongato-ovato; sutura vitred : apertura antrorsum dila- tata; labro tenui, inflecto, postice callo modico suffulto ; columella 4-plicata. Axis 12; diam. 6 millim. Inhabits Simon’s Bay, in 18 fathoms, gravelly bottom. W. S. Resembles V. zonata, but is much larger; possibly the shell given by Sowerby as a variety, though no traces of bands are visible. Like V. teniata in form and size, but with a different lip. The animal is very active, of a pale lemon-color, with blotches of flake-white and very numerous crimson points; mar- gin of mantle dark chocolate. Generally like the animal of Per- sicula. AMPHIPERAS BULLATUS. TT. tenuis, ovato-globosa, rubicun- dula, lineis incrementi et postice striis volventibus insculpta: apertura linearis ; labro angusto vix crenulato, porcellano, utroque pariter producto, postice canalem contortam obliquam callo cir- cumdatam efformante, antice una cum plicd columellari canalem brevem angustam definiente. Closely resembles A. wmbilicatus and margarita, but wants the perforation and triply dentate callus of the former, and is much less acuminated, with a less distinct canal and a denser and more crenulated lip, than the latter. PLANAXIS INEPTA. T. minuta, glabra, ovato-lanceolata, albi- do-lutescens, apice, line& subsuturali, et lineis alteris minoribus nigris, postice et ad basin sulcis cincta ; anfr. 8-10 convexis: aper- tura angusta; labro simplici, tessellato; columella modicé exca- vata ; callo postico copioso. Axis 4; diam. 2.5 millim. Inhabits Kikaia Bay, at low-water mark. W. S. Allied to P. succincta. PLANAXIS CINGULATA. T. parva, crassa, ovato-turrita, glabra, fusco-rufa flavido alternatim zonata, strié intercurrente; anfr. 7 convexiusculis, apicalibus granulosis, ultimo magno: apertura anguste ovata; labro obliquo intus 7 denticulato et fasciato ; colu- mella excavata, rufa. Axis 12; diam. 6 millim. Inhabits Ou- sima, under stones, at low-water mark. W. S. TURRITELLA GRACILLIMA. ‘TT. parva, gracillima, acicularis, tenuis, dilute fulva, fascia pallidi cincta; anfr. 18-20 convexi- usculis, filis volventibus tribus et antrorsum nonnullis minoribus 141 sculptis; basi convexo, nitido: apertura circularis. Axis 20; diam. 4 millim. Inhabits Kagosima Bay. Very common. W.S%. One of the most delicate of species, looking like a young shell ; but the number of specimens and of the whorls would indicate this as the usual aspect of the shell. CERITHIUM LACERTINUM. _ T. turrita, fusiformis, tenuis, cine- rea fusco maculata; anfr. 10 convexiusculis bene discretis, posticis plicatis et filis granulosis 4 ad anfractum ultimum demum sim- plicibus cinctis, minoribus plerumque intervenientibus: apertura semilunaris ; labro acuto; rostro abbreviato. Axis 13; diam. 4 millim. Inhabits Sydney Harbor. W. S. Exceedingly like C. lima, Brug. It has no varices however, is less slender, and differently colored. It is also like C. grana- rium, Kiener. CreriTHIumM stigmMosum. ‘TT. elongato-conica, albida, granu- lata, granulis fuscescentibus in seriebus tribus dispositis quorum mediana ad anfractus anticos bipartita; anfr. 8-++ convexiusculis, ultimo varicoso: apertura rotundato-ovata; columella arcuata, callosi ; rostro brevissimo, obliquo. Axis 7; diam. 2+ millim. Inhabits Bonin Is. W. 8. A minute species with the characters of C. lactewm and C. pa- pillosum. CERITHIUM PLACIDUM. T. minuta, elongata, acute conica, lactea (apice rufo), crassa; anfr. 11 convexiusculis, filis 5-6 cine- tis, posticis plicatis etiam granulatis ; sutura impressa: apertura 4 totius longitudinis, rotundato-ovata ; rostro brevissimo. Axis 8 ; diam. 2 millim. Inhabits China Seas. W. S. Another small species of the same group. BITTIUM CRATICULATUM. ‘TT. parva, subulata, fusca, plicis circ. 20 et liris acutis volventibus majoribus 4 supereuntibus alve- olata; anfr. 10 ad modum convexis, ultimo varice munito et plicis antice privato: apertura parva, rhomboideo-ovata, } totius longi- tudinis zquans; rostro brevissimo. Axis 6; diam. 2 millim. inhabits Hong Kong; laminarian zone. W. S. Similar to B. glareosum, but less slender, the aperture smaller, and the sculpture not beaded. 142 Birrium GLAREOSUM. T. conica, elevata, turrita, leviuscula, dilute rufa; anfr. 10+ planulatis, filis granulosis 4 cinctis et longi- tudinaliter ad 20-plicatis, ultimo varicoso et antice constricto: apertura ovato-rotundata, postice acuta; labro simplici; colu- mella late arcuata. Axis 6; lat. 2 millim. Inhabits Port Lloyd, Bonin Is., and Loo Choo Is. W.S. Birrium parcum. ‘T. parva, ovato-turrita, cinerea ad apicem vitrea, undulis -ad 10 antice evanescentibus et filis 6 (ad anfr. ult. 10++), filo minori plerumque interposito, ornata; anfr. 7-+- rotundatis, duobus anticis nonconformibus: apertura rotundato- ovata, $ totius longitudinis squans; labro vix incrassato; colu- mell& callo copioso induté# Axis 5; diam. 2 millim. Inhabits Loo Choo Is. W. S. BirtruM ALUTACEUM. ‘T. parva, elongato-ovata, acuminata, fusca; anfr. 8-++ planulatis bene discretis, singulis gemmularum seriebus tribus hic nigris illic corneis instructis, ad anfr. ultimum in liras articulatas (filo interjecto) mutatis: apertura subcircu- laris; canali brevissimo. Axis 7; diam. 3 millim. Inhabits China Seas. W. S. Much in the style of C. granarium, but much smaller. The granules are very distinct and well rounded, being separated by longitudinal furrows. CreRITHIOPSIS LAQUEATA. T. elongato-conica, rufa; anfr. 13+ planatis eleganter bicarinatis; carinis acutissimis, remotis, postica majore, altera ad peripheriam, quinta anteriori ; interstitiis latis tenue clathratis; basi planata radiatim striolata: apertura quadrata; labro a carinis 5-crenato. Axis 8; diam. 2 millim. Inhabits China Seas. W. S. Most nearly related to C. assimilata, C. B. Ad., but its form is more tapering and its posterior keel larger. CERITHIOPSIS AURANTIACA. T. minuta, ovata, flavido-auran- tia ; anfr. nucleosis lineis spiralibus et radiantibus decussatis ; anf. normalibus 5 planatis carinatis ; carinis quoad spiram duabus vali- dis obtusis haud remotis ; altera infra peripheriam ; alteré denique cirea basin ; laminis longitudinalibus circ. 16 carinas decussanti- bus, tuberculosis ; sutura inconspicua: apertura? (fracta). Axis 2; diam. 1+ millim. Inhabits China Seas. W. S. 143 Resembles C. pupiformis from Mazatlan, but differs in the de- tails of sculpture. CERITHIOPSIS SEMIPICTA. T. minuta, crassa, ovata, albida, bizorata; anfr. 7 bicarinatis, carinis obtusis tuberculatis, quarum > ’ b] b] posterior albida, anterior balaustina sunt ; tuberculis cire. 16 vali- dis elongatis ; carini ante peripheriam, altera denique ad basin: g perip ’ apertura quadrata ? (fracta). Axis 2.5; diam. 1 millim. Inhabits China Seas. W.S. Resembles C. sorex from Mazatlan, except in sculpture. CERITHIOPSIS RUGOSA. T. turrito-conica, rudis, cinerea ; anfr. 12+ carina mediana et altera anticali cinctis, interspatio concavo et laminis ad carinas dilatatis clathrato ; intervallo postico convexo obverse clathrato; basi lineis incrementalibus solum insculpto ; sutura inconspicua: apertura subquadrata; rostro abbreviato ; columella contortéa. Axis 15 diam. 4 millim. Inbabits China Seas. W. S. Allied in form and size to C. terebellum, C. metula, and C. pune- tatum, but very differently sculptured. TRIFORIS INTERCALARIS. T. alba, subulata; anfr. nucleosis 5, primo levi ceteris unicarinatis ; normalibus 16 planatis, carinis in spira cinctis, primum duabus remotis rotundatis, dein altera minori intermedia sensim crescente donee alteris equante ; ad peripheriam denique quart&; clathris ad 20 carinas decussantibus, intersection- ibus tuberculosis; carinis duabus circa basin et canalem parum tuberculosis: apertura parum expansa; canalibus apertis, brevi- bus. Axis 6; diam. 1.5 millim. Inhabits China Seas. W. S. TRIFORIS INTERFILATUS. T. conico-cylindrica, dilute rufo- fusca; anfr. 10+ bicarinatis; carinis acutis, tertia ad suturam ; inter carinas leyes, tota superficie clathrata, clathris radiantibus circ. 30 rotundatis, interstitiis angustis ; super clathras, inter carinas spirales, filo parvo spirali; circa basin carinis duabus rotundatis haud clathratis ; basi radiatim rugoso: apertura expansa, suborbi- cularis ; labro a carinis 4 et aliis intercalantibus eleganter undato ; canalibus apertis, antico elongato, tortuoso, postico brevi, satis pro- fundo. Axis .3; diam. .06+ poll. Inhabits Hong Kong Harbor. Wiad: 144 Resembles 7. corrugatus, Hinds, but the canal and basal sculp- ture are different. TRIFORIS CALCULIFERUS. T. conico-turrita, albida, sub-cyl- indracea ; anfr. 12 planulatis, seriebus duabus quasi calculorum tertid quoque minore terminali ornatis, interstitiis spiraliter stri- ulatis ; carina in basi haud tuberculata ; suturaé inconspicua: aper- tura (fracta) ? canalibus clausis, antico tortuoso, postico parvo. Axis 6; diam. 2 millim. Inhabits Loo Choo. W. S. TrirorIs CLATHRATUS. ‘T. dilatato-subulata, alba; anfr. 9 convexiusculis, carinis spiralibus cinctis, in spira 3 (postica mi- nore), ad peripheriam quart&, circa basin duabus minoribus, a clathris cire. 16 decussatis, juncturis gemmatis ; sutura distincta : apertura (fracta)? canalibus brevibus, apertis. Axis 4; diam. 1.5 millim. Inhabits China Seas. W. S. ALABA PUNCTO-STRIATA. ‘TT. alba, hyalina, ubique spiraliter tenuissimé striata, striis punctulatis ; anfr. 4 convexiusculis, posti- cis levibus, viridioribus, alteris plerumque tervaricosis, varicibus rotundatis niveis: apertura ovata, antice parum effusa; labro acuto; columella aurantiaco tincta. Axis .18; diam. .07 poll. Inhabits Loo Choo Is. W. S. The generic place of this beautifully transparent and delicately sculptured shell is somewhat doubtful. RissOINA TROCHLEARIS. ‘'T. parva, crassa, cinerea, ovoidea ; anfr. nucleosis tribus levibus, normalibus 4 convexiusculis, ultimo carinis 7 elevatis acutis cincto, quarum 2-4 (plerumque 3) spiram ascendunt; interstitiis late excavatis, sepe clathratis: apertura ovalis; peritremate continuo vel in juniorem effuso. Axis .16; diam. .073 poll. Inhabits China Seas. W. S. Resembles Parthenia exarata ; and possibly may be a Jissoa. RissoINA IMBRICATA. ‘TT. ovato-lanceolata, porcellana, nitida ; anfr. 8 planulatis, tabulatis, liris imbricantibus numerosis cinctis : apertura ovata, effusa; peritremate expanso, simplici; columella torta. Axis 7; diam. 3 millim. Inhabits China Seas. W. S. RIssOINA FLEXUOSA. ‘T. fusiformis, turrita, straminea ; anfr. 7 convexiusculis, plicis obtusis flexuosis cire. 15 clathratis, et lineis volventibus numerosis cinctis: apertura satis magna, semi- 145 circularis ; peritremate simplici, expanso, antice effuso. Axis 6; diam. 2 millim. Inhabits Sydney Harbor. W. 5S. RissOINA NITIDULA. T. acicularis, vitrea, nitida; anfr. 9 ad suturam profunde declivibus, plicis inconspicuis ad 18 et filis vol- ventibus circ. 4 insculptis: apertura ovata, vix effusa; peritre- mate acuto, filis crenato. Axis 5; diam. 2 millim. Inhabits China Seas. W.S. RissOINA VILLICA. T. elevato-conica, turrita, alba; anfr. 9 tabulatis, clathris ad 20 obtusis et liris 4-5 sensim antrorsum de- erescentibus decussatis. Apertura modica vix anticé sinuosa ; peritremate simplici expanso, vix incrassato. Axis 6; diam. 3 millim. Inhabits Loo Choo and Kikaia. W. S. Rissomva mopesta. ‘TT. fusiformis, ventricosa, solida, alba ; anfr. 9 convexis, sulcis numerosis longitudinalibus minutis et striis volventibus exilibus decussatis; apice acuminato. Apertura obliqua, antice effusa; peritremate simplici, expanso, incrassato. Axis 5; diam. 2.25 millim. Inhabits Loo Choo. W. S. RiIssOINA STRIGILLATA. TT. fusiformis, turrita, vitrea, lactea ; anfr. 8. convexiusculis; sutura profunda; anfr. ultimo clathris elevatis circ. 22, et costis volventibus sensim remotioribus ad 10 cancellato, et ad decussationes gemmato. Apertura parva, vix effusa ; peritremate crenato; sulco postsiphonali profundo, et in rimam umbilicalem producto. Axis 5; diam. 2.20 millim. In- habits Loo Choo Is. W. S. This and the three following species, having an acute elevated ridge with an adjacent constriction around the beak, and with a predominance of longitudinal folds, constitute a well-defined sub- genus which may be called Rissouina. Rissorina PLIcATULA. T. fusiformis, turrita, cinerascens ; anfr. 8 4+- convexiusculis, plicis acutis rectis 15 ornatis, carinam postsiphonalem amplectentibus ; interspatiis lineis volventibus in- sculptis. Apertura ovoidea; peritremate incrassato. Axis 6; diam. 2 millim. Inhabits Port Lloyd, Bonin Is.; Loo Choo Is. ; Kikaia. W.S. Rissorna LtyRATA. T. lanceolata, acuminata, albida; anfr. 10 convexiusculis costas acutas flexuosas circ. 23 gerentibus, ad inter 19 146 spatia striis tenuibus volventibus, insculptis, ultimo dimidiam longitudinis testee subsequante ; costa basali elevata acuta. Aper- tura angusta, effusa. Axis 6; diam. 2.5 millim. Inhabits Kikaia and Ousima. W. S. RissOINA TORNATILIS. T. subulata, acuminata, straminea ; anfr. 9+ convexis, clathris acutis longitudinalibus cire. 22, filis elevatis volventibus 4-5 insignibus. Apertura modica, anticé vix effusa; peritremate acuto, extus valdé incrassato, crenato. Axis 5.5; diam. 2 millim. Inhabits Loo Choo. W. S. ALVANIA ACUMINATA. ‘TT. gracilis, turrita, straminea; anfr. nucleosis 3 levibus, dein duobus bicarinatis, denique 4 normalibus, tumidis plicis subacutis et carinis (3) eleganter cancellatis. Aper- tura ovata; labro tenui; columella aurantiaco tincta. Axis 3; diam., 1 millim. Inhabits Bonin Is. W. S. Closely allied to A. excurvata, Cpr. ALVANIA FENESTRATA. TT. minuta, conica, lucida; anfr. nucleosis 2 helicoideis ; normalibus 4 ventricosis, antice aurantia- cis, posticé albidis, eleganter fenestratis (clathris angustis cire. 19, liris spiralibus 2, quarta vel quinta circa basin haud decussatis) interstitiis quadratis, levibus. Apertura suborbicularis; labro continuo, acuto ; columella aurantiaco tinctéa. Axis 2; diam. 1 ++ millim. Inhabits China Seas. W. S. Broad in proportion to its length, and exquisitely sculptured. ALVANIA QUADRATA. T. minutissima, alba, lanceolata; anfr. 4 quadratim decussatis, clathris circ. 16, liris spiralibus 3, circa basin tribus additis. Apertura subovalis; labro incrassato. Axis 1.6; diam. .8 millim. Inhabits China Seas. W. S. The apex is not perfect enough to decide the genus positively, but the aspect is essentially Alvanoid. ALVANIA PURA. T. elongata, acuta, lactea, nitida, clathris circ. 24 et filis volventibus (5-6) decussata, ad anfr. ultimum filis 10 quorum tribus anticis moniliferis et constrictione alteris sejunc- tis; anfr. 8 convexis. Apertura semicircularis, obliqua, effusa labro acuto, varice externo suffulto. Axis 6; diam. 2 millim. Inhabits Simoda. W. S. ALVANIA LIGATA. TT. solida, acute ovata, subperforata; epidermide rufa induta et carinis cire. 4 (ad anfr. ult. 7) cincta, 147 suleis concavis sejunctis ; anfr. 5 + ventricosis. ‘Apertura rotun- dato-ovalis, peritremate integro antice vix sinuato; labro crasso, expanso, carinis dentato, extrorsum varicoso. Axis 4; diam. 1-+-millim. Dredged in Hong Kong Harbor. W. S. Curious for its dusky exterior and prominent keels like a mi- nute Planazxis. ALVANIA FuscA. TT. crassa, ovato-acuminata, rufa, filis vol- ventibus (8) et filis longitudinalibus majoribus (20) cancellata intersectionibus gemmulatis; anfr. 8 convexis, ultimo antice con- stricto. Apertura angusta, ovata, effusa ; peritremate continuo ; labro acuto, extrorsum varicoso. Axis 5; diam. 1.5 millim. Dredged in Hong Kong Harbor. W. S. Resembles the preceding in color, but is more elongated and differently sculptured. CincuLa (?) ATOMARIA. ‘T. minutissima, solida, conica, flavido-aurantia, apice obtuso ; anfr. 5 planulatis, suturis impressis ; ultimo ad peripheriam subangulato. Apertura suborbicularis, labro posticé incumbente. Axis 1.5; diam, 1 millim. Inhabits China Seas. W.S. The apex decides it to be a Rissoid, though its general aspect is that of Awriculina, and by the contraction of the aperture it ap- proaches Nematura. OBELISCUS ORNATUS. T. parva, solida, nitida, elongato-con- ica, exalbida vel carneola, linea rufa postsuturali et striis confer- tis exilissimis cincta; anfr. 14 planulatis; sutura canaliculata. Apertura rotundato-ovata antice angulata; columella plica post- ica et plicd mediana inconspicua munita. Axis 16; diam. 6 millim. Inhabits China Seas. W. S. Characterized by its numerous whorls and brown thread. It has the form and size of O. reticulatus, A. Ad., and if not new, must be a variety of that species. OBELISCUS BUXEUS. ‘TT. crassa, acuté conica, buxea; anfr. 10 planulatis, ultimo ad peripheriam angulato; sutura profunda, an- gulata. Apertura subquadrata; labro acuto; columella plica solitaria subparietali munita. Axis 6.5; diam. 2 millim. Inhab- its China Seas. W. S. Known by its peculiar color and solitary plait. 148 SyRNOLA suBULA. T. yaldé acuta, solida, polita, alba; anfr. 9 planatis (linea rufa cincta?); suturé impressa ; basi pro- ducta. Apertura ovalis; peritremate continuo; columella plica unica acuta, declivi instructé. Axis 4; diam.1 millim. Inhabits China Seas. W.S. It has the continuous peritreme of Hulimella, and the plait of Odostomia. Not uncommon among fossil forms. The genus has recently been established by A. Adams, and may be his S. einctella. EvLIMA CARNEOLA. T. elevata, conica, suvdiaphana, incarnes- cente nitidissima ; anfr. apicalibus 3 stylinis primo globoso, dein 2 conicis, denique 5 planatis; sutura vix notata; basi rotundata : labro haud sinuato ; labro incrassato. Opereulum tenue, parum spirale, aperturam zquans. Axis 4-+-; diam. 1.5 millim. Inhabits Ousima. W.S. An unusually broad conical species of peculiar yellowish flesh color. ODOSTOMIA BULLULA. TT. minuta, ovata, margaritacea, lu- cida; nucleo parvo, immerso; anfr. 5 tumidis; sutura impressa, marginata’; basi ovata, imperforata. Apertura rotundato-ovalis ; labro haud sinuato; columella acuta, plica inconspicua, declivi. Axis. 2-++; diam. 1+ millim. Inhabits Loo Choo. W. S. OposTOMIA PLANATA. T. elongata, pyramidalis, tenuis, lac- tea, polita; nucleo nutante, immerso; anfr. 8 planatis sutura vix instrictis; basi perforata, protracta. Apertura ovalis; labro postice sinuato; plica columellari conspicua, acuta. Axis 6.5; diam. 2 millim. Inhabits Hong Kong. W. S. Well marked by its pyramidal form, perforate axis, and close approach to Obeliscus. OpDOSTOMIA SUBPLANATA. ‘T. tenuis, elongato-ovata, levis, flavo-albida; nucleo parvo, laterali, immerso; anfr. 4 vix con- vexis, tabulatis; basi producta, imperforata. Apertura ovata ; labro haud sinuato; plica columellari conspicua, acuta. Axis 2.7; diam. 1+ millim. Inhabits Hong Kong. W. S. Distinguished from the preceding by its less flattened whorls and imperforate column, ODOSTOMIA LIRATA. T. majuscula, albida, acicularis ; nucleo minuto, laterali, effosso; anfr. 6 rotundatis, liris quadratis (5-7) 149 cinetis, interstitiis eleganter clathratis; basi producta, perforata. Apertura ovalis, parum effusa; labro concinné serrulato; colu- mella flexuosa, vitrea, plicaé parva, obtusa, parum declivi. Axis 8.5; diam. 4-++ millim. Inhabits China Seas. W. S. This beautifully sculptured shell has the general aspect of Monoptygma, but the columellar twist of Odostomia. OpOSTOMIA SCALARINA. T. elongata, acicularis, albida ; nu- cleo parvo, laterali, celato; anfr. 7 tumidis, posticé subangulatis longitudinaliter oblique clathratis, clathris cire. 18 subcontinuis. Apertura ovata ; columella tenuissima, plic& inconspicua, declivi. Axis 4; diam. 1+ millim. Inhabits Loo Choo. W. S. Opostom1a optusa. ‘T. oblonga, ovata, crassiuscula, albida ; nucleo parvo, dislocato; anfr. 5 convexiusculis, sulcis cire. 8 remotis cinctis, sutura impressa. Apertura ovata; labro incrassa- to; columella tenui, plica parva acuta. Axis 2+; diam. 1 millim. Habitat Port Lloyd, Bonin Is. W. S. ODOSTOMIA VIRIDESCENS. T. minuta, solida, conica, viridans ; nucleo celato; anfr. 5, carinis 3 (5 ad anfr. ult.) conspicuis, per- obtusis, cinctis, interstitiis angustis. Apertura ovata ; labro in- crassato ; plic& columellari eminente, peracuta, transversa. Axis 3; diam. .7 millim. Inhabits China Seas. W.S. Remarkable for its pea-green color. OpostTom1A PHyYsOIDES. T. solida, levis, elongato-ovata, alba; nucleo magno, physeformi, trivolvi, nutante ; anfr. 5 con- vexiusculis ; sutura impress’; basi rotundata. Apertura ovalis ; plica columellari erecta, acutiore. Axis 3-+; diam. 2 millim. Inhabits China Seas. W.S. Distinguished from other species by its minute physa-like apex. Opostomr1A soLtuTa. ‘TT. lanceolata, tenuis, alba, spiraliter tenuissimé striata; apice helicoideo eminente ; anfr. 8 conyex- iusculis, perobliquis, tabulatis ; sutura bené impressa ; basi acu- minataé. Apertura angusta, lunata; labro acuto; plica columel- lari, modica, perobliqua. Axis 4.5; diam. 1-+ millim. Inhabits Loo Choo. W.S. MonortyGMA PUNCTICULATA. T. ovato-conica, acuta, lucida, cerea; nucleo satis magno vix nutante; anfr. 7 spiraliter tenuis- 150 simé striatis, striis (cire. 7) plerumque minutissime puncticulatis ; basi protractéa. Apertura ovata; labro acuto; plic& columellari inconspicua, obtusa. Axis 10; diam. 3.5 millim. Inhabits China Seas. W.S. MonoprTyGMA ACUMINATA. T. parva, subulata, tenuis, polita, ex albo viridescens ; nucleo laterali; anfr 10, ultimo dimidiam totius longitudinis equante, subangulari; sutura lineari, linea subsuturali comitante. Apertura anguste ovata; plicd columellari modica. Axis 6; diam. 2 millim. Inhabits Ousima. W. S. MonopryGMaA SINUATA. ‘TT. ovato-conica, tenuis, albida ; vertice declivi, celato; anfr. 6 rotundatis, striulis incrementi, et striis volventibus tenuissimis rugulatis. Apertura ovata; labro acuto posticé sinuato; plicé columellari acuta, declivi. Axis 18 ; diam. 4 millim. Inhabits China Seas. W.S. Has an Odostomoid look, and in growth is like Limnea trun- catula. TURBONILLA OBELISCUS. T. satis magna, solida, elongata, albida ; nucleo trivolvi, lucido, nutante ; anfr. 12 planatis, clathris 20-36 obtusis, interdum interruptis ornatis, interstitiis parum im- pressis antrorsum sensim evanescentibus ; basi subglobosa. Aper- tura ovato-quadrata; labro tenui; columella parum intorta. Axis 10.5; diam. 3 millim. Inhabits Simon’s Bay, at low water, under stones. W. S. TURBONILLA C&LATA. ‘T. ovato-turrita, obtusa, solida, alba, nucleo bivolvi, helicoideo, nutante; anfr. 9 planatis, tabulatis, clathris 20-24 rectis plerumque continuis, angustis ; interstitiis equantibus, striis 10-12 spiraliter exaratis ; basi rotundata minus insculpta ; columella valde intorta. Axis 6.7; diam. 1.7 millim. Inhabits Hong Kong. W. S. Well marked by its obtuse point, deep sculpture, and strongly twisted pillar. TURBONILLA ORNATA. T. gracilis, ochracea, fascia preesuturali, et basali albida cincta; anfr. 8 + planatis, clathris rectis validis obtusis omnino munitis ; interstitiis vix equantibus profundis, striis 10-14 spiraliter insculptis ; sutura impress; basi ovaté. Aper- tura ovata; columella haud valde intorta. Axis 6.7; diam. 1.5 millim. Inhabits Hong Kong. W. S. 151 Similar to 7. interrupta. Prettily ornamented by its pale base and suture with orange band shading into pink. Cuemnitzia 10TA. T. minima, gracillima, lactea; nucleo helicoideo, bivolvi, inclinato; anfr. 6-8 subplanatis, tabulatis, clathris rectis conspicuis 14-16 et striis volventibus (6-10) ad interstitia quadratim omnino decussatis. Apertura ovalis ; colu- mella vix intorta. Axis 2+; diam. .7 millim. Inhabits ? Two somewhat worn specimens vary a good deal in size and form. CHEMNITZIA CIRCUMDATA. TT. ovato-conica, polita, straminea vitté aurantiaca cincta; anfr. 8 vix convexis et sutura vix indi- eatis, posticis plicis numerosis indistinctis ornatis, ultimo haud insculpto et vittis 5 ornato. Apertura angusta; peritremate acuto. Axis 5; diam. 2 millim. Inhabits Sydney Harbor. W. S. CHEMNITZIA TRACHEALIS. T. pyramidalis, solida, alba; nucleo parvo, valdé declivi; anfr. 8 costis rotundatis validis 4 cinctis, quaram una tenuiore seepe in suturam celata ; interstitiis omnino tenuissimé clathratis. Apertura ovata; columella vix intorta. Axis 5.7; diam. 1.7 millim. Inhabits Simon’s Bay. W.S. In the deficiency of the columellar fold it differs from the Chemnitzie generally, as well as from Chemnitzia proper, in the absence of bars and in the spiral sculpture. For these peculiari- ties Mr. P. P. Carpenter * proposes a sub-generic distinction under the name of s. g. PoLysPIRELLA. It is intermediate between Aclis and Parthenia. DunKeRIA EFFuSA. T. valde protracta, gracillima, albida ; anfr. 10 tumidis, posticis sejunctis, lirulis rectis cire. 30 saepé con- fluentibus clathratis, interstitiis tenuissime decussatis. Apertura ovata; columella parum intorté. Long. 6; lat. 1 + millim. Habitat Loo Choo. W. S. This elegant little shell connects Chemnitzia with Vol. xxxviii. p. 196. Oct. 1839. SoLecuRTUS niTIpUs. [Machaera nitida, Invert. Mass.] T. oblongo-ovata, utrinque rotundata, inequilateralis; epidermide in- flecta, luteo-virescente, glabra, postice corrugati; costa alba, dila- tante, retrorsum flectente intus munitaé. Long. 3; alt. 2, 7; lat. 1.9 poll. From the stomachs of codfish caught on the Banks, and occasion- ally on our shores. Macrra ovaris. T. magna, crassa, obovata, subtriangularis, epidermide rudi fusco-viridi transverse corrugata induta ; umbonibus vix antemedianis ; lunulaé curta lanceolata indistincté. Long. 4; alt. 2.7; lat. 1.9 poll. From the Bank fisheries, in the stomachs of fish ; and smaller ones in Boston harbor. Compared with M. solidissima it is smaller, more compressed ; the beaks less elevated and more central; the anterior end less elevated ; the hinge more delicate ; the epidermis rougher and more dusky. [More recently named M. ponderosa by Philippi, because he says the name ovalis belongs to a fossil species. ] Butta [Diaphana] Desiiis. T. parva, ovata, ventricosa, hyalina ; basi truncata, sub-umbilicata ; spira retusa, discoidea ; anfractibus 4, 180 supra rotundatis. Long. 0.5; lat. 0.1 poll. Obtained from fishes taken in Massachusetts Bay. A thin, globular species, resembling B. diaphana Mont., which has an elevated spire and no umbilicus. Butxa [Cylichna] opstricra. T. parva, ovoidea, obstricta, pal- lida; anfract. 5; spira elevata, obtusi; sutura duplicata: apertura antice dilatata. Long. 0.2; lat. 0.1 poll. Found at Chelsea Beach, Provincetown, New Bedford, &c. Agrees in general with B. obtusa Mont., but the spire is more ele- vated. It is shorter and smoother than B. canaliculata, and has a different suture. LIMNEA CHALYBEA. [Now regarded as a variety of L. columella Say. ] VALVATA PUPOIDEA. T. parva, castanea, elevatd; anfract. ad 5, ultima & precedente disjuncta. Long. 0.1; lat. 0.075 poll. In- habits Fresh Pond and elsewhere, on stones and submerged sticks. PLANORBIS HIRSUTUS. TT. discoidea, utrinque concava ; anfracti- bus 4, lineis hirsutis volventibus insignibus. Lat. 0.2; alt. 0.05 poll. Found adhering to sticks in stagnant water, Dorchester, Dedham, Cambridge, &c. Natica FLAVA. 'T. ventricoso-globosa, alba, epidermide tenui flava induta, imperforata; anfractibus 4: apertura ampla; columella flexuosa. Long. 1; lat. 0.9 poll. Obtained from the stomachs of fishes. Has a striking resemblance in form to Helix aperta Born. Natica CANALICULATA. [Name preoccupied ; now regarded as a large form of N. Helicoides Johnston, of the north of Europe. ] LACUNA NERITOIDEA. T. ovato-globosa, tenuis, levis, epidermide flavescente induta; anfractibus 3 convexis, ultimo magno; spira fere nulla: apertura obliqua, semilunaris; umbilico amplo, profundo. Long. 4; lat. + poll. Found on the sands, Chelsea Beach. Fusus [Trophon] scaLarirormis. TT. fusiformis, alba vel casta- nea, longitudinaliter 15-20 lamelloso-costata; cauda longiuscula: apertura ampla, spiram equans; fauce castanea. Long. 1.75; lat. 0.8 poll. Mostly taken from codfish. Possibly a very large form of 7. clathratus of the North of Europe. Fusus tornatvus. [I described a shell under this name, believing it to be the true F’. despecius of Linneus, and because another shell seemed then to be universally received under that name, in Europe. Forbes and Hanley, coinciding with me, have since rectified the synonymy accordingly. ] Buccinum [Astyris] RosaceUM. T. parva, alba, rosaceo tincta, 181 conico-acuta; anfractibus 6 plano-convexis, spiraliter lineolatis : apertura spira brevior; columella arcuata, planulataé. Long. 0.3; lat. 0.15 poll. From fish caught in Massachusetts Bay. REPORT ON THE INVERTEBRATA OF MASSACHU- SETTS. 8vo. CAMBRIDGE, 1841. ASTARTE QUADRANS. ‘T. ovato-triangularis, obliqua, compressa, levis, epidermide flavo-olivaceaé induta; umbonibus vix postmedianis erectis, acutis; lunulé lanceolata; intus lactea; margine interiori simplici; dente laterali satis conspicuo. Long. 0.4-+-; alt. 0,4; lat. 0.1 poll. From the stomachs of fish in Boston Harbor and elsewhere. This small, smooth, quadrant-shaped shell, with its evident lateral tooth, is well characterized. ASTARTE UNDATA. T. elongato-ovata, posticé acuta, inequilater- alis, undulis concentricis profundis circiter 15 insculpta, epidermide ' flavo-viridi induta. Long. 1.3; alt. 0.9. Found occasionally in Massachusetts Bay, but more commonly at the eastward. [This species was indicated, but not formally described, and has since been recognised by conchologists. ] Venus [Tapes] FLucruosa. T. ovata, lenticularis, inequilater- alis, alba, undulis concentricis reflexis 20-25 disco insculpta, epider- mide tenui, nitidaé, stramineaé induta; umbonibus parvis; lunula cordata, polita ; extremitatibus obtusis. Long. 0.8; alt. 0.6; lat. 0.2 poll. From fishes’ stomachs. [This is evidently a more northern shell. A specimen from the sea of Ochotsck measures an inch and a half in length by an inch in height. It is V. astartoides Beck (1849). ] Nucuta [Yoldia] saporirya. T. elongato-ovata, sub-equilater- alis, subrostrata, epidermide flavo-viridi nitida induta; margine pos- tero-ventrali flexuosi; denticulis utroque 16-18. Long. 1.2; alt. 0.8; lat. 0.3 poll. Inhabits Massachusetts Bay generally. Nucouta [Leda] Jacxsontr. T. calcarea, ovata, postice angustata demum adscendens et truncata, ventricosa, concentrice lirata; um- bonibus ad trientem anteriorem positis; denticulis anticis 15, posticis 20. Long. 1; alt. 0.5 + ; lat.0.4 poll. Found at the land-slip at Pride’s Bridge, near Portland. [ This is a fossil species, and though it has not as yet been found recent on the Atlantic shores, it is at least very similar to L. pernula of the Scandinavian coast. | 182 Mopi1oLaA PECTINULA. ‘T. obovata, ventricosa, convexa, costis rotundatis radiantibus circiter 40 ornata; epidermide cerina induta; umbonibus tumidis, sub-terminalibus: cavositas livida; margine in- teriori crenulaté. Long. 0.9; alt. 0.6; lat. 0.4 poll. From fishes, St. George’s Banks. [Peculiar in its ventricose form, and its surface entirely covered with conspicuous rounded ribs. Belongs to genus Modiolaria.] Moproia NExA. [Undoubtedly the J. (Modiolaria) nigra Gray.] Limax TOGATA [is Tebennophorus Caroliniensis Binney ]. LiMAx TUNICATA [is Limaz agrestis Miller]. Hexrx [Helicella] ELectrina. H. testa parva, depressa, umbili- cata, tenui, pellucida electrina; anfractibus quatuor, striatis; aper- tura rotundata; labro simplici. Diameter more than one eighth of an inch. Found in damp open places. : It resembles H. indentata above, and H. arborea beneath. PLANORBIS DILATATUS. T. minuta, supra planulata, infra angusté umbilicata; anfractibus tribus, ultimo carinato; sutura impressa: apertura ampla, subovata etdilatata. Diam. 33;; axis, 34; poll. From a pool in Hingham. Ve uTina [Morvillia J. E. Gray] zonata. TT. ovato-semi-orbicu- laris, depressa, lucida, crusta calcarea fusco zonata induta; columella planulata, suleata: apertura ampla ovata. Diam. 0.5; axis, 0.3 poll. Obtained on Chelsea Beach and from fishes’ stomachs. CrnGuLA ACULEUS. T. minuta, sub-cylindrica cornea ; anfracti- bus 6 convexis, striis tenuissimis volventibus cinctis; sutura profunda : bade Baar j : es apertura ovata ; basi subperforato. Axis, ,%,; diam. ;/, poll.; diverg. 23°. On timbers and stones at low-water mark. MARGARITA ARGENTATA. T. minuta, depresso-conica, sub-mar- garitacea; anfractibus 4 convexis striis confertis volventibus omnind insculptis; suturad profunda; fauce nacrea, iridescente; basi per- forata. Axis, 345; diam.} poll. From fishes caught off Cape Ann and Cohasset. BOSTON JOURNAL OF NATURAL HISTORY. OS> Vol. iii. 395, (July, 1840.) Pupa PROCcERA [is P. rupicola Say]. Pupa [Vertigo] mrtrum. T. minutissima, ovalis, castanea; an- fractibus quatuor convexis, oblique striatis: apertura cordata, dentibus sex compressis armata, quorum duobus labio aflfixis; umbilico pro- fundo. Axis, 3';; diam. 7, poll. Found on fallen leaves, in woods. 183 A very minute species like P. vertigo Drap., which is a reversed shell. Pura [Vertigo] stmpLex. T. minima, cylindracea, levis, casta- nea; apice obtuso; anfractibus sex, sub-planulatis: apertura orbicu- laris, edentula. Axis, ;4;; diam. ;'5 poll. Found in a grove near Fresh Pond, Cambridge. Nearly identical with P. edentula Drap. OS> Vol. iv. 356, (April, 1843.) Pura sERVILIs [is P. pellucida Pfr.]. OS> Vol. iv. No.1, Jan. 1842, (cover,) and p. 452, Jan. 1844, HELIX PENICILLATA [is a delicately streaked variety of H. Cuben- sis Pfeif.]. HELIcINA GLABRA [is H. nitida Pfeif.]. Pupa CARINATA [is a half-grown specimen of P. rupicola Say.]. Pura (Siphonostoma) Liruus [is Cylindrella elegans Pfeif.]. CycLostoMaA BicoLtor [is C. (Megalomastoma) auriculatum D’Orb. ]. CYCLOSTOMA CLATHRATUM [is C. rugulosum Pfeif.]. CycLOsTOMA MAHOGANI [is C. pictum Pfeif., C. sagra D’Orb.]. CycLostoma [Cistula] cATENATUM. T. conico-turrita, fulvo- viridescens; anfr. 5 convexis, striis elevatis volventibus fusco-artic- ulatis cinctis: apertura sub-orbicularis, anfractu penultimo disjuncto ; peristomate vix reflexo, postice dentato; operculo alho, calcareo. Long. 0.5; lat. 0.4 poll. Inhabits Cuba, at Sagua la Grande. Very similar in size, form, and surface to C. limbiferum, but the aperture is quite different, having a peculiar notch at the posterior angle of the aperture, and wanting the broad white peristome. CONUS CASTRENSIS. C. testa levi, conica, antice admodum con- stricta; spira planulata, apice mamillata, flammulis radiantibus cas- taneis notaté; anfr. 10, supra concavis, ultimo colore albo, lineis et maculis angulatis castaneis reticulata; basi castaneé. Long. 3; lat. 1.5 poll. [This is the C. thalassiarcha Reeve, 1843.] OG> Vol, iv. 456, (January, 1844,) Srrepraxis Peritu. T. oblique ovato-subglobosa, albido-vires- cens, arcté umbilicata; anfractibus 7 convexiusculis, apice obtusa, supra striata, subtus levigata ; apertura subquadrata antice rotundata; columella dente lamelloso instructa; peristomate albo, undulato, re- flexo, ad angulum posticum attenuato. Axis, 0.4; diam. 0,3 poll. Inhabits Province of Tavoy, Burmah. Rev. Dr. Mason. 184 Resembles S. aberrata, which has a smaller aperture, ringent with teeth and columellar folds. OS Vol. vi. p. 874, (April, 1852.) BULIMUS VESICALIS [SUFFLATUS]. TT. tenuis, lactea, ovoidea, striatula, vix perforata; spira brevi, anfract. 54, ultimo elliptico § lon- gitudinis testee adequante: apertura dimidiam longitudinis adequans, lunata; labro simplici; columella reflexa. Axis 1.3; diam. 0.7 poll. Inhabits Lower California. Maj. Rich. Form and size of B. apodemetes D’Orb. [The name B. vesicalis is preoccupied. ] Buuimvus veGEtus. T. solidula, elongato-ovata, alba, striatula, perforata; spira elevata, anfr. 6, ultimo 4 longitudinis teste superante, tumido, subgibboso: apertura subovata; labio subcontinuo, reflexo, faucibus stramineis. Axis 1.5; diam. 1 poll. Inhabits San Juan, Gulf of California. Lieut. Green. It has the form of B. rhodolarynx. [Mr. Cuming thinks it may be B. pallidior Sowb. ] Butimus Excersus. T. elongato-ovata, acuminata, solidiuscula, levis, fulvida, albido strigata; spira elevata, peracuta, anfr. 7, ultimo % longitudinis vix eequante: apertura trientem long. adequans, subo- vata; labro albo anticé revoluto; subcontinuo, ad columellam ex- panso, fissuram latam obtegente. Axis 14; diam. % poll. Inhabits Lower California. Maj. Rich. Has much the appearance of B. Lobbii Rv., from Peru, with the aperture more like B. pallidior Sowb. Acmma [Nacella] PALEACEA [is Patelloidea depicta Hinds]. CREPIDULA EXPLANATA. T. unguiformis, elongata, calcarea, apice terminal; antice angustata, truncata, denticulo mediano armata ; marginibus ex lamellis disjunctis alveolatis; dorso concavo; intus por- cellana, lateribus incurvatis; septum dimidiam longitudinis metiens, valde arcuatum, margine concavo. Long. 14; lat. $; alt. $ poll. In- habits Monterey, Lieut. Green ; Lower California, Maj. Iich. A curious shell, which must have resided in tubes of some sort, probably of those made by Pholas. The back is excavated as if done by a gouge. [It may be C. perforans Valenc.] Buia (Akera) cutcrretua. T. subcylindracea, solidula, albida, spiraliter concinné striata, epidermide straminea induta; anfr. 5, ultimo elongato subfusiformi, antice rotundato, supernis spiram conicam efformantibus; sutura profunde canaliculataé: apertura linearis, an- trorsum dilatata; columella valde contorta, uniplicata ; labro posticé sensim recedente. Axis1;diam.}inch. Santa Barbara. Col. Jewett. B. tenuis Adams is the only species approaching this. Some of its characters bring it in close alliance with the genus Tornatina. 185 Buxxa [Tornatina] cereais. T. parva, ovoideo-fusiformis, soli- dula, eburnea, levigata; spira exserta, tabulata, mamillata; anfr. 4: apertura angusta, antrorsum dilatata, labro ad medium saliente, pos- tice sensim approximante, et ante suturam coadunato; columella cal- losa, plica valida instructé. Axis, +; diam. j4 poll. Inhabits Santa Barbara. Col. Jewett. In form and size it is scarcely to be distinguished from B. gracilis A. Ad., which is transversely striated. In terms, it agrees with B. -infrequens C. B. Ad., but Prof. Adams himself considered it a different species. PuysA ELATA. T. tenuissima, ovato-lanceolata, levigata, nitida, dilute cornea, ad suturam decolorata: spira acuta, anfr. 6 convexius- culis, ultimo % longitudinis teste equante, antice angustato: apertura angustata 3 long. teste adequans; columella vix plicaté. Axis {; diam. 3 poll.; aperture long. 2 poll. Inhabits Lower California. Maj. Rich. Almost as slender as P. hypnorum, though much larger, highly pol- ished, and with a very long aperture. SIGARETUS DEBILIS. T. parva, tenuis, lucida, depressa, mellea, striis numerosissimis obtusis volventibus, supernis majoribus, insculpta ; spira superficiei generali congruens; anfr. duobus; apice ad quadran- tem diametris sito; angulo ad peripheriam obtuso, versus aperturam sensim evanido; labio antice dilatato. Long. $; lat. 3; alt. 4 poll. Inhabits La Paz, Gulf of California. Lieut. Green. It has the form of S. haliotideus, the size of S. planus, and is smooth like S. levigatus. Narica [Isapis] ovorpEA. _ T. ovoidea, solida, albida, costis planu- latis politis ad 11 cincta, interspatiis duplo angustioribus concinne clathratis ; spira acuta, anfr. 4 superné tabulatis, ultimo magno, ovato: apertura ovata; labro crenulato; columella tenui, antrorsum concava, plica mediana instructa; umbilico conspicuo, profundo. Long. 35; lat. 3; poll. Purchased at Mazatlan. Col. Jewett. TEREBRA ARGUTA [is T. fulgurata Phil.]. Trocuus MARCIDUS. T.-pyramidalis, solidula, vix striata, rufo- viridis; anfr. 5 planulatis ad suturam vix discretis: basis subplana, levis, umbilico amplo profundo infundibuliformi, juxti aperturam partim tecto: apertura subrhombea, perobliqua: operculum tenue. Axis $; diam. 1} poll. Inhabits Monterey. Lieut. Green. Like T. Montereyi Kiener, but the base is plain, the umbilicus broad tunnel-shaped. It also resembles Chlorostoma maculatum A. Ad. Trocuus [Livona] prcoiprs. [Resembling 7. (Livona) pica ; but I have seen no reason as yet to change my opinion that it is distinct 24 186 from it. Its principal distinctions are, a more elevated pyramid, more rounded whorls, less oblique aperture, destitution of undulations on the surface, with generally, revolving cords, more defined and brighter coloration, lip rounded and nacreous, instead of sharp and black. Santa Barbara. Col. Jewett. Trocuus (Monodonta) pyRiFORMIS [is Osilinus gallina Forbes, variety ]. Mopvu us porsuosus. TT. depressa, ovato-conica, solida, calearea, ad peripheriam acuta et nodulosa, supra’ obscure undulato-nodosa, infra’ conica, spiraliter insculpta: apertura sub-triangularis, labro acuto intus suleato; columella et dente rosaceis; umbilico parvo, pro- fundo. Diameter half an inch; axis one third of an inch. Found at Acapulco. Col. Jewett. Approaches JZ. duplicatus, which is described as spirally grooved above. CHEMNITZIA TENUICULA. T. gracillima, lanceolata, nitida, cerina infra suturam rufescens; anfr. 10 planulatis, tabulatis, longitudinaliter ad 20-plicatis; striis numerosis volventibus leviter secatis; basi modo spiraliter striata: apertura angusta ovata; labro acuto. Axis 0.3; diam. 0.05 poll. Inhabits Santa Barbara. Col. Jewett. May be compared with C. formosa, but is less accurately acicular, the posterior whorls increasing more rapidly than the others. CHEMNITZIA TORQUATA. ‘T. solida, turrita, lactea; anfr. 8 con- vexiusculis, plicis longitudinalibus flexuosis perobliquis ad 16 ornatis ; anfractu ultimo subangulato; basi inornat&é: apertura subovata; labro incrassato. Long. 0.2; lat. 0.05 poll. Obtained at Santa Bar- bara. Col. Jewett. Formed much like C. clathrata, but is smaller, has no revolving lines, and the folds are more oblique. OpOSsTOMIA GRAVIDA. T. ovato-conica, elevata, eburnea, polita; spira acuta; anfr. 6 supra rotundatis, ultimo subangulato 3 teste ade- quante: apertura ovata, antice rotundata, postice acuta; labro ex- panso; plicé columellari acuta, transversi, umbilico parvo suffossa. Axis 4; diam. =}; poll. Inhabits Santa Barbara. Col. Jeweit. Has most of the characters of O. conoidea of Europe, but is propor- tionally broader. OposToMIA ACHATES. TT. ovato-lanceolata, nitida, longitudinaliter striata, albida, maculis elongatis rubiginosis obscure zonata; spira acuta, anfr. ad 9 vix convexis, ultimo dimidiam longitud. teste ade- quante, basi rotundata et strid unica submediana cincta: apertura angusta, ovata, postice acuta; columella plica medianad et duabus minoribus anterioribus instructé. Long. $; lat. ;3; poll. Inhabits Mazatlan. Col. Jewett. 187 Has the aspect of a land shell. It has not only the single fold of Odostomia, but at least two others, like Pyramidella. It is probably the type of a new genus. Fusus amsustus. ‘T. fusiformis, sub-equilateralis, dilute rufa fusco tincta; spira elongata, acuta, anfr. 8 convexis, subangulatis, liris crebris cinctis, et plicis conspicuis ad 8 ornatis, propé suturam constrictis: apertura parva; rostro subrecto. Axis 13; diam. 3 poll. Mazatlan. Lieut. Green. Resembles F’. marmoratus Phil., from Australia, which is longer and more numerously ribbed; and fF’. rostratus, a smaller shell with re- markably rounded whorls. ERATO LEUCOPHHA. T. subovata, subfusca, solida, valdé callosa, callo et basi eburneis; anfr. ad 4 subangulatis, ultimo superne tabu- lato: apertura angusta, labro antice excavato, concinne denticulato. Long. +; lat. 4 poll. Inhabits Santa Barbara. Col. Jewett. Like E. callosa A. Ad., differing chiefly in color and the finer den- ticulations of the aperture. Also resembles E. columbella Menke. Conus rAvus. T. solida, ovoideo-conica, bulbosa, spiraliter argute striata et antice liris elevatis alternis majoribus instructa, fulvida, epidermide fuscescente induta: spira elevata; anfr. ad 8 vix excavatis, ultimi angulo rotundato: apertura angusta antice vix dilatata; labro postice recedente, intus violacescente. Long. 13; lat. $ poll. From Santa Barbara. Col. Jewett. Has the form of C. solidus, celebs, and mozambicus, and more espe- cially of C. fabula Sowb. It differs in color from all except C. celebs, which is more slender, and has distinct granular striz. Conus comptus [is declared to be a rubbed specimen of a young C. purpurascens = C. achatinus Menke]. Conus pusiiuus. ‘T. parva, conica, polita, seriebus ad 8 granulo- rum remotorum antice cincta: spira planulata; anfr. 8 coronatis con- structa; alba maculis obliquis elongatis irregularibus aurantiacis bi- cincta; apice rufo: apertura angusta, linearis. Axis 0.5; diam. 0.3 poll. Inhabits Mazatlan. Col. Jewett. Allied to C. sponsalis, especially in coloring, but is smaller, without convex outline, more elongated, spire much less elevated. Nearly the same remarks apply to C. nanus. OSTEODESMA NITIDUM. ‘TT. transversa, subfalcata, ventricosa, tenuis, lucida vivide margaritacea, concentrice undulata, plerumque nuda; apice ad trientem anteriorem; extremitate antic rotundata; extrem. postica attenuata, truncata, subadscendente, utraque extre- mitate lineis radiantibus remotis striaté. Long. §; lat. et alt. 2 poll. Inhabits Santa Barbara. Lieut. Green. More inequilateral, more recurved, more pearly and free from 188 strie than O. hyalinum. O. Floridanum is more ventricose and much more attenuated. Donax FLExvosus. T. triangularis, cuneata undulato-flexuosa, antice acuta, area postica lata, alta, subplanulata, undique striis exili- bus profundis radiantibus insculpta; apice post-mediano; angulo um- bonali postice carinato; margine ventrali excurvata; colore albo vel stramineo, intus interdum posticé violaceo. Long. 9; alt. 3; lat. 2 poll. Inhabits Santa Barbara. Col. Jeweit. ; TELLINA TERSA. T. modica, convexiuscula, ovato-triangularis, alba, concentricé vix striata; apice post-mediano; extrem. antica rotundata, superne compressa; extrem. postica triangulari, apice sub- acuto; margine dorsali recta, cito desinente: dentibus lateralibus obsoletis. Long. 1; alt. 3.7; lat. 0.3 poll. Inhabits Panama. Col. Jewett. Generally resembles 7. lineata Turt., but is smaller, more com- pressed, and destitute of lateral teeth. Allied closely to 7. plebeja, but is more equilateral and quite white. TELLINA puRA. T. parva, sub-elliptica, vix inequilateralis, tenuis, lucida, vel zonis lacteis zonata, striis minitissimis radiata ; apice acuto; extremitate anticd semiovali; extrem. postica modicé angustata, trun- cata, hiante, plicaé admodum conspicua; intus nitida, striis elevatis tenuibus radiata; dentibus lateralibus carentibus. Long. 1; lat. 0.3; alt. 0.6 poll. Inhabits Panama, Col. Jewett ; San Diego, Lieut. Green. Remarkable for its symmetrical form and great simplicity. TELLINA GEMMA. ‘TT. parva, inequilateralis, transversa, ovato- triangularis, striis rotundatis, concentricis ordinatis insculpta, rosea, albido vix radiata; extremitate antic semiovali, superné acute rotun- data; extrem. postica breviori, flexuosa sub-triangulari; flexura valde acuta; margine ventrali postice incurva; intus vivide rosacea. Long. 3; alt. 3,5 lat. 3, poll. Inhabits San Juan. Lieut. Green. Resembles in form and color 7’. distorta and T. rhomboidea, and more especially 7’. scalpellum. CYRENA ALTILIS [is regarded as a variety of C. Mexicana]. Venus [Trigona] TANTILLUS. ‘TT. parva, ovato-trigona, ventri- cosa, inequilateralis, solidula; levis vel sulculis remotis concentricis arata, alba, postice fusco tincta; margine dorsali postica longiori, rectiuscula, angulo acuto. Long. 4; alt.4 poll. Inhabits Santa Bar- bara. Col. Jewett. This little Venus reminds one of V. gemma, or rather is like a min- iature V. meretriz in form and coloration. 189 PROCEEDINGS OF THE BOSTON SOCIETY OF NATURAL HISTORY. OS> Vol. i. 188, October, 1848. Pura [Cylindrella] porrecta. T. gracillima, fusiformi, glabra, pellucida, maculis albis subquadratis obscure tessellatis ; anfr. circiter 24, ultimo disjuncto et valdé porrecto; apertura campanulata, sub- quadrata; peristomate albo, reflexo. Axis, 3; diam. 57, poll. In- habits Cuba. J. Bartlett. About eight of the whorls are usually broken from the summit. Pupa tyratTa. T. parva, plerumque sinistrorsa, castanea, late umbilicata; anfr. 5 convexis, costulis flexuosis ad 20 concinneé clathra- tis: apertura suborbicularis, campanulata, posticé dentibus duobus lamellosis, in faucibus duobus alteris, armata. Long. ;4,; breadth, go + mech. Found at Maui, Sandwich Islands. OS> Also published in Journal iv. 452, January, 1844. Shells received from Rey. Francis Mason, Tavoy, British Burmah. HELIX PROCUMBENS. T. discoided, supra planulata, subtus con- vexa, epidermide pallide cornea, late umbilicata; anfr. quatuor, ultimo deflecto; apertura rotundata, labro reflexo, albo. Diam. 3; alt. + poll. Belongs to the group of which H. planulata is the type. [Said to. be H. delibrata Benson, Journ. Asiat. Soc., 1836. ] HELIX INFRENDENS. T. orbiculatéi, depresso-conoided, corneo- virescente, subcarinata, supra rugose striata, infra glabra, nitida, regione umbilicali indentata ; anfr. 7 convexis, sutura impressi ; aper- tura coarctata, labro vix reflexo, dentibus tribus pliciformibus in- structa. Diam. 2; alt. + poll. Very closely allied to H. rangiana Fer. Hewix (Caracolla) GaABaTa. ‘T. albido-cornea, supra planulata, infra valdé conyexa, lata et profundé umbilicata; anfr. 44, leviter striatis, ultimo carina castanea circumdato; apertura subquadrata, labro albo, reflexo. Diam. +; alt. 55 poll. Much like H. scabriuscula in form and aperture, but quite different as to surface, color, and umbilicus. Hetrx (Caracolla) rerrorsa. T. orbiculaté, sinistrorsé, utrinque convexa, pallide castanea, arcte umbilicata; anfr. 5, lineis longitudi- nalibus et volventibus minuté rugosis, ultimo carinato; apertura rotundata, labro acuto. Lat. 13; alt. 1 poll. Young specimens might be confounded with H. Himalana Lea, which is much more rounded, the surface smoother, the carina quite indistinct, and the umbilicus smaller. 190 Herurx (Caracolla) anceps. T. lenticulari, pallidé cornea acuté carinata, supra striata, subtus nitidaé, vix perforata; anfr. 6, supra planulatis, sutura submarginata; apertura lunulari, labro simplici, angulata. Diam. 77>; alt. 5 poll. In general form, color, and sculpture it resembles H. acies Fer., but is much smaller and not umbilicated. VITRINA PRESTANS. T. depress, fragili, nitida, stramine’; anfr. tribus, striis incrementi et striss volventibus reticulatis ; apertura sub- coarctataé. Lat. 4; alt. 2 poll. The largest species yet described. Buimus AtTRIcALLosus. ‘T. solidé, imperforata, oblongo-ovata, vix striata, sulphureé; anfr. 7 convexiusculis, ad suturam constrictis ; apertura lunato-ovali, basi sub-effusa, labro albo, reflexo, marginibus callo atro junctis. Long. 24; lat. 1 poll. Allied to B. vittatus, Dryas, &c., from Philippine Islands. The colors of the aperture are distributed as in B. iostoma. CLAUSILIA INSIGNIS. T. fusiformi, sinistrorsi, solidé, castanea ; anfr. 9 convexis, leviter striatis; apertura purpurea, rotundata, la- mellis duabus fortibus postice, quinque tenuibus, per testam apparen- tibus, intus instructa; labro valde reflexo. Long. 1; lat. 4 poll. Allied to C. Macarana, and is the largest and most ponderous species known. CYCLOSTOMA PERNOBILIS. ‘T. depresso-conicé, apice acuta, late umbilicata; anfr. 6 subdepressis, striis incrementi conspicuis et striis volventibus rugulosis, ultimo carina costali albida cincto; apertura magna, intus cwrulescente, labro crasso, expanso, vivide sanguineo : coloribus piceis et lutescentibus superne varié nubeculata; imfra al- bida, lineis piceis volventibus interrupta. Alt. 1; lat. 2 poll. This superb species closely resembles C. involvulus Sowb. [Said to be C. aurantiaca Schum., figured by Chemnitz; but it certainly does not agree with his figure, though it does agree with the figure of Kiister, pl. 23, fig. 45.] CYCLOSTOMA SECTILABRUM. ‘TT. turrita, spira acuminata, arcte umbilicata, brunnea; anfract. 8 sub-ventricosis, vix striatis, penultimo sub-gibbo; apertura sub-orbiculari, intus rubescente, peritremate duplici, incrassato, albo, prope angulum posticum canali parvo inter- rupta. Alt. 1; lat. 2 poll. Resembles C. altum, Sowb., but has the fissure of the peritreme on the opposite side. C. erocewm Sowb., may be a faded specimen of this shell. Unio Tavoyensis. T. rotundata, solida, sub-equilaterali, fusca, postice dilatata, sub-angulata’; umbonibus elevatis, una cum latere 191 postico corrugatis ; dentibus cardinalibus pyramidatis, lateralibus flex- uosis: impressionibus musculorum profundis ; margarita albido-incar- nata. Long. 2; alt. 14; lat. + poll. Closely allied to U. corrugata Lam., which is less rounded and less corrugated. Unio crispata. TT. ovali-elongata, inequilaterali, antice rotun- data, posticé subrostrata, costaque umbonali instructé; umbonibus parvis ; colore virescente, fusco variegata; rugis angulatis radiantibus undique crispata: intus livida; dentibus parvis obtusis. Long. 155; alt. =®; lat. 4 poll. Unio FOLIACEA. T. parva, compressa, fragili, fusco-virescente, inequilaterali, transversé oblongo-ovata, posticé sub-angulata; umbo- nibus parvis, subtilissimé corrugatis; dentibus exilibus, rectis, ad mar- ginem parallelis; margarita livida, iridescente. Long. 12; lat. 4; alt. ;° poll. Closely allied to U. Bengalensis and Corrianus Lea. Unio EXOLESCENS. ‘T. transverso-oblongaté, inequilaterali, sub- compressa, fusco-virescente ; postice dilatata, sub-biangulata; umbo- nibus sub-elevatis; dentibus cardinalibus parvis, obliquis, interdum exoletis; lateralibus remotis, rectis; margarita lividaé vel ferruginea. Long. 22; alt. 14; lat. 2 poll. In form and color resembles some stinted varieties of U. complanatus. PALUDINA DOLIARIS. ‘TT. tenui, conico-globosi, luteo-viridescente, arctissimé umbilicataé; anfract. 5 ventricosis, striis minutissimis reticu- latis, costulis numerosis inequalibus, purpureis, cinctis; apertura sub- eirculari; columella reflexa, non appressi, alba; labiis postice dis- junctis. Long. 44; lat. = poll. Differs from P. Burroughiana and elongata in form and aperture ; but is nearly allied to P. subcostata, Griffith’s Cuvier. PALUDINA PETROSA. T. solida, imperforaté, subglobosi, apice erosi, saturate viridi, rufo fasciatéi; anfract. 3, ultimo amplo, sutura preecipue marginata ; apertura semi-circulari, columella laté planulata, rufescente ; intus nigrescente vel holosericea; operculi apice subcen- trali, elementis concentricis. Resembles Anculotus or Littorina, but its place is determined by the operculum. MELANIA BATANA. T. turrité, solida, fusco-virescente, apice erosi, anfract. 6-7, planulatis, postice sub-coronatis, costulis longi- tudinalibus et volventibus gemmularum series tres efformantibus ; apertura angusto-ovata, postice coronata, intus cerulescente, columella alba. Long. 1; lat. 2 poll. Very closely resembles MZ. Hydeii Conrad. Mop1oLa vAricosa. TT. fragili, lucida, inequilaterali, transverse 192 ovato-oblongaté, sub-faleati; colore Iuteo-viridescente, supra costii. umbonali maculis venosis obliquis notata; margarita argented, ad um- bones purpurea. Long. 14; lat. 55; alt. 3 poll. A beautiful and delicate shell, which I suspect to be an inhabitant of brackish or even fresh water. PrLanorsis [Discus] DENTATUS. 'T. discoidea, solidula, pallidé cornea, utroque umbilicata; anfr. 3 leviter striatis, supra et infra sub- carinatis; sutura profunda; apertura sublunatai; labro intus callo albo incrassato induto ; fauce dentibus sex abditis armata. Axis, 4; diam. ,3, poll. Inhabits Cuba. J. Bartlett. OS> Vol. i. 157, (Dec. 1848.) Specimens collected by Dr. George A. Perkins, Liberia. Hetrx [Caracolla] peLLucipa. ‘TT. fragili, pellucida, pallide cornea, orbiculari, carinata, vix perforata ; spira depressa, sub lente striis subtilissimis decussata ; infra convex4, nitida: anfractibus 6 sub- convexis, externis prope suturam excavatis: apertura lunata, labro angulato. Lat. 47; alt. 4 poll. [This is H. Africana Pfr.; Proc. Zool. Soc. 1848; and H. troglo- dytes Morelet, Rev. Zool. 1848, and Journ. Conch. 1850.] Butimus RuBICUNDULUS. ‘T. oblongo-conici, tenui, rosaceo- erubescente ; anfractibus 7 convexiusculis, ultimo obsolete carinato. sutura marginata, albida, eleganter crenulata; apertura ovata, colu- mella tenui, labro subreflexo, intus sub-incrassato. Long. 14; lat. 75 poll. Allied to B. Boholensis Brod., and is colored like some varieties of B. concinnus Brod. [It is a variety of the following.] BuLIMUS INTERSTINCTUS. T. ovaté, apice mamillata, imperfo- rata, pallidé incarnata, striis liturisque purpureis et pallidis hic et illic variegati; anfractibus 7 ventricosis, ultimo magno, partem dimidiam spire wquante ; suturaé marginata, albida, notissime crenulata: aper- tur parva, sub-quadrata; columella rosacea, evolvente, postice sinu- ata; labro acuto, intus callo rosaceo incrassato. Long. 14; lat. %. ACHATINA TORRIDA. T. ovoidea, apice mamillata, rufo-castanea : anfractibus 7 ventricosis, striatis, ultimo magno, basi deorsum con- tractaé; suturé marginata, perspicué crenulata ; apertura parva, ovata ; columella alba, fusco-marginata, basi leviter truncata; labro simplici, fuscescente, intus albo, incrassato. Long. 34; lat. 15 poll. Allied to A. saulcydi, Guerin, a reversed species. AcHatina [Subulina] ryvotuTa. T. turrita, elongata, apice mamillata, imperforata, fuscescente ; anfractibus 12 leviter striatis, quatuor superioribus sub-equalibus, ultimo carinato ; sutura impressi, minutissimé crenulata ; apertura ovata, spire partem sextam equante, 193 columella arcuata, involuta, tubulum efformante. Long. 1,1,; lat. + poll. Allied to A. octona, decollata, &c. Pura [Ennea] pumitio. T. obovata, ventricosa, sursum acuta, apice rotundata, imperforata, albida, nitida: anfractibus 7 planulatis, leviter striatis, ultimo deorsum attenuato; sutura lineari; apertura parva, semi-ellipticé, lamella unica posticé cum labro continua, et plica umbilicali angulata impedita ; peritremate albo, undulato, leviter et inequaliter reflexo. Long. 43; lat. ;% poll. Pura [Ennea] caprrata. T. cylindracea, apice rotundata, albida, imperforata ; anfractibus planulatis, concinne obliqué striatis, ultimo deorsum attenuata, basi carinataé, externé et sub suturaé umbilicali indentata ; suturaé conspicua; apertura angusta, protensa, subovali, basi sub-angulata, lamella postica, altera columellari, dentibus quatuor inequalibus, plicaque umbilicali dentifera ringente ; peritremate can- dida, reflexa. Long. $1; lat. + poll. MELANIA MUTANS [is M. fuscata, Gmel., which varies greatly in its exterior sculpture ]. ANODONTA SALWENIANA. T. trapezoided, compressa, subtenui, retré dilatata, postice truncata, colore picea ; supra costam umbona- lem radiatim plicata: umbonibus parum elevatis ; margine superiori recta, compressa, ligamentum occultante, ante umbonibus excavata ; utraque valva processu dentiformi cardinali, uno ante altero aptante, instructa ; cavositate minimé profunda ; impressionibus muscularibus minime impressis; margarita sub-livida. Long. 54; lat. 14; alt. 24 poll. River Salwen, British Burmah, Rev. F. Mason. Resembles small specimens of Alas. complanata, but is much less ponderous. A. INOSCULARIS. 'T. transverse oblonga, sub-ovata, solida, subven- tricosa, picea : umbonibus parum elevatis ; margine supra brevi, recto, ad angulum posticum rotundato, posticé subtruncato ; infra arcuata ; utraque valva processu cardinali crassa, dentiformi, instructé, uno ante altero aptante; margarita albida ; impressione musculari antico profundo. Long. 3; lat. 13; alt. 14 poll. River Salwen, Rev. F. Mason. Very closely allied to A. edentula, Say, but is a more solid shell, and the cardinal apophyses are more elevated and stronger. OS Vol. i. 161, May, 1844. The prominent tooth-like apophyses of these shells, render their position among the genera of Naiades, as now received, somewhat equivocal ; uniting, as they do, Alasmodon and Anodon ; and they strengthen the idea entertained by many, that the modifications in 25 194 the number, position, or absence of teeth, according to which the genera are now founded, are so gradual as to compel us to regard them as merely sub-genera of one grand genus. [More recent exami- nations of the structure of the mollusks conclusively show that the natural divisions among the Naiads are numerous.] Should this view be adopted, and to it Dr. G. is much inclined, he believes that another sub-generic group might be instituted, equally as characteristic as any now received; and proposes as follows :— Subgenus PspeuDODON. Hinge margin with a tooth-like apophysis on each valve, the surface of which is not fractured, but smoothly covered with enamel, fitting imto corresponding undulations in the opposite valve, that on the right valve closing in front of that on the left. Anod. inoscularis would be the type of this group, and to it would belong A. Salweniana, edentula, Stewartii, and perhaps some others. [Perhaps equivalent to Monocondylea, D’Orb.] HeELIx SETIGERA [HysTRIx]. T. discoidea, parva, tenuis, fusco et luteo tessellata ; supra planulata, apice indentata; anfractibus quinis, clathris creberrimis setigeris aliquando denudatis insignibus; subtus late umbilicata; apertura lunata, lamellis duabus internis conspicuis volventibus. [Diam. 4; axis, ;; poll. Hab. East Maui, Sandwich Islands. Like H. dedalea and H. contorta in form and coloration, but larger than either, and further distinguished by the fewer lamellz and the long coarse hairs which it bears. The name first given was preoccu- pied, and one suggested by Dr. Mighels is substituted. ] Heirx Stettuta. T. parva, discoidea, supra planulata, subtus convexa, utroque umbilicata, fusca interdum luteo maculata; anfrac- tibus quatuor triquetris, costibus frequentibus elevatis, acutis, ad peri- pheriam carinatam stellatis: apertura rhomboidea, lamella unica interna, elevata, volvente instructa ; labro simplici. [Diam. +; axis, ;4; poll. Hab. Maui, Sandwich Islands. Distin- guished by its angular whorls and very prominent ridges, which pro- ject at the periphery so as to resemble the rowel of a spur. ] Vol. ii. 26, (January, 1845.) ACHATINA ADUSTA. TT. turrita, imperforata, solida, fusco-nigricans sursum pallescens ; apice pyramidata ; anfr. 7 convexis, leviter stria- tis, ultimo subearinato: apertura ovalis, intus opalina; labro simplici, acuto, nigro; columella eburnea, antice in dentem producta. Long. 14; lat. poll, Hab. Kauai, Sandwich Islands. This shell partakes of the characters of both Achatina and Achati- nella [subgen. Carelia H. and A. Adams]. Occasionally, instead of 195 being wholly black, there are bands of yellow. [One variety is the A. bicolor of Dr. Jay.] SroMATELLA [Gena] concrnna. T. parvula, auriformis, tenuis, striis regularibus rosaceo catenatim pictis cincta; labio posticé dis- juncto, revoluto ; columella obsolete perforata; intus rosacea, nitida. Long. 1; lat. 33; poll. Hab. Sandwich Islands. Trocuus [Collonia] verruca. T. parva, solida, globoso-conica, nitida plus minusve rosacea; anfr. 6 rotundatis, ultimo costulis vol- ventibus 12 subequalibus, maculis saturatioribus catenatim signatis cincto: apertura circularis ; columella planulata, antice sub-producta ; umbilico parvo. Long. 4; lat. 4 poll. Hab. Sandwich Islands. Its specific name suggests its general appearance. Trocuus [Monodonta] GEMMATUS. T. parva, conico-globosa, rubella vel cinerascens; anfr. 4 rotundatis, ultimo costulis ad 10, e granulis nitidis interdum radiatim saturatioribus compositis, cincto ; sutura canaliculata ; umbilico expanso, canali et carina circumdato : apertura rotundata, basi plicato, ringente ; labro costulis crenulato, intus suleato. Long. 4; lat.t poll. Inhabits Sandwich Islands. [Belongs to the genus Eucheles Phil.] COLUMBELLA PALUMBINA. ‘T. ovato-turbinata, nitida, albida fer- rugineo marmorata, et transversim lirata: apertura ringens; labro inflexo, denticulato; columella biplicata, granulosa, interdum rosaceo tincta. Long. 2; lat. 8; poll. Sandwich Islands. Like C. turturina, but much smaller, and having regular revolving threads, instead of striz, always developed near the tip, and pro- longed more or less backwards. Cyprma [Trivia] GemMMuLA. T. parva, ovato-globosa, nitida, costulis numerosis interdum divaricantibus undique elegantissime rugosa ; dorso minimé suleato; colore rubida, dorso utrinque maculis duabus rosaceis feré confluentibus, lateribus rosaceo aspersis, subtus alba, apicibus rosaceo tinctis. Long. 1; lat. 3, poll. Sandwich Islands. Closely allied to C. tremeza Duclos. ACHATINELLA RADIATA. _ T. solida, ovato-conica, lineolis castaneis flavidis et albidis longitudinaliter picta, interdum fascia mediana vel basali alba cincta, subumbilicata; anfr. 6 convexis; sutura marginata, albidi: apertura ovata, peristomate reflexo, flavido; plica lata. Long. 2; lat. .8, poll. Sandwich Islands. In size and marking it somewhat resembles Bul. radiatus, but the lines are finer and more numerous. [It is A. dubia and A. grisea Pfr., Bul. Gouldi Pfr., Partula denselineata. Rv.] ACHATINELLA RUBENS. T. elongato-ovata, crassa, straminea, 196 antice erubescens, apice castaneo; anfr. 6 convexis, epidermide fusco hic illic obtectis; suturaé impressi: apertura ovata; labro simplici intus incrassato, rosaceo; fauce alba, plica tenui. Long. ?; lat. 2 poll. Sandwich Islands. A plain species, but well marked by its colors, especially by that of the aperture. [A. Mastersii Pfr.] ACHATINELLA NUCLEOLA. ‘T. solida, ovato-globosa, livido-eas- tanea, ad suturam et antice albida, apice pallido; anfr. 6 postice sub- tabulatis: apertura rotundata; labro simplici; columella excavata, callo obtecta ; plicé parva. Long. ,%,; lat. + poll. Sandwich Islands. A small, solid species, of a livid hue. [A. brevis Pfr.] ACHATINELLA MICROSTOMA [is A. textilis Fer. A. ventulus Rv. and Pfr. ]. ACHATINELLA FULIGINOSA [is A. tristis Fer.]. ACHATINELLA [Leptachatina] stTRIATULA. ‘T. parva, ovato- elongata, nitida, viridis, longitudinaliter concinne et creberrime striato-costata; anfr. 7 convexis, ultimo partem dimidiam spire adequante : apertura angusta, seminularis; labro albido, incrassato. Long. 3/,; lat. 3 poll. Sandwich Islands. Not unlike Bul. obscurus in general appearance. Distinguished from several similar species by its more slender form and by its beau- tifully barred surface. [A. clara Rv. and Pfr. ] OS> Vol. ii. 87, (February 1845); and Journal, v. 290, Puoxias [Martesia] BRANCHIATA. ‘T. oviformis, clausa, postice acuminata, areolis tribus triangularibus partita; areola antica plicis numerosis concentricis serratis munitaé; mediali transverse subtiliter striata; postica lamellis corneis flexilibus imbricatis instructa; dorso scutis tribus obtecto, unico umbonali magno orbiculari; duobus mar- ginalibus lanceolatis ; duobus quoque ventralibus; apophysi exili, flexuoso-falciformi. Long. 114; lat. 48 poll. Hab. Liberia. Dr. C.J. Bates. PSAMMOBIA FIGLINA. ‘T. crassa, sub-ovalis, sub-equilateralis, rufo-cinerea, antice rotundata, postice hians, sub-rostrata, valde flex- uosa; apice emarginato ; valvis concentrice laminoso-striatis, radiatim lineolatis; natibus elevatis, attigentibus ; dentibus cardinalibus diva- ricatis; intus alba, punctis numerosis indentata. Long. 31; alt. 21; lat. 12 poll. Liberia. Dr. C. J. Bates. TELLINA RUBICUNDA. T. tenuis, transversa, inequivalvis, antice semi-elliptica, postice triangularis, flexuosa, apice truncato, concen- trice et radiatim minutissime striata, natibus post-medianis; valva dextra planulata, postice areolam triangularem lamellosam habente ; 197 valva sinistra convexi; colore diluté rosea, albo radiato. Long. 1; alt. 2; lat.4 poll. Liberia. Dr. C. J. Bates. Resanbles T. donacina in shape and coloring, but is larger, and is also distinguished by the triangular area of coarser sculpture on the right valve. Nucuta [Leda] sBicusprpata. T. alba, transverse elongato- ovata, sub-cylindrica, antice rotundata et triplicata, postice producta, tricarinata, bicuspidata; valvis oblique concinne striatis, preter spatio excavato inter carinas serrata ise cardine dentibus anticis ad 12, posticis ad 26. Long. 3; alt.4 poll. Hab. Liberia. Dr. C. J. Bates. [N. Largilliertt Phil. (1851) ; Leda plicifera A. Ad. (1856).] NassA TURBINEA. T. solida, ovata, albida, apice producto; anfr. 9 sub-tabulatis, plicis numerosis acutis et striis volventibus profundis ad 13 decussatis; basi spiraliter striat&: apertura parva, stricta, an- gulato-ovalis ; labio acuto, crenulato, intus sulecato; callo columellari erecto, granulato. Long. ;%,; lat. 4 poll. Hab. Liberia. Dr. C. J. Bates. Nassa ELATA. T. elongato-conica, cinereo-albida; anfr. 8 tabu- latis, marginatis, posterioribus plicatis, penultimo glabro, ultimo anticé striato: apertura angusta, ovals alba; labro acuto, anticé crenulato, intus striato. Long. 43; lat. 3, poll. Hab. Liberia. Dr. C. J. Bates. HELIX HEPATIZON. T. depresso-conica, crassa, rubro-castanea, canescens, sub-perforata; anfr. 54 convexis, striis incrementalibus et striis volventibus arguté reticulatis; suturaé impressa: apertura semi- circularis, contracta; peristomate incrassato; intus cerasina. Lat. 1,%; alt. 4 poll. Found near the mouth of Gaboon River. Dr. C.J. Bates. OS> Vol. ii. 53, (July, 1845.) Unto patupicouus. T. transversi, ovato-rhomboidea, inequila- terali, antice rotundata; margine ligamentali arcuaté; natibus pro- minulis, erosis; epidermide rufo-castanea; dentibus cardinalibus ob- liquis, pyramidatis ; lateralibus lenté arcuatis ; margarita cupreo-corus- eante. Long. 12; alt. =9 poll. Everglades of Florida. J. Barilett. In shape and size closely resembles U. heterodon. Unio papyraceus. ‘T. fragili, valdé inequilaterali, transverse ovato-oblongata, sub-cylindracea ; postice subrostrata, supra angulata ; natibus parvis, eleganter undulatis; epidermide levigata, luteo-cas- tanea, radiatim lineolata; cardine invalido; dente cardinali longitudi- nali, SORES laterali tenui, recta; margarita argentea. Long. 14; lat. 35; alt. 1 poll. Everglades of Florida. J. Bartlett. In shape, delicacy, and even its color, it is not unlike Anodonta couperiana Lea. 198 OS> Vol. ii. 98, (January, 1846.) HeLrx saTurNiA. T. magna, lenticularis pallide rubido-cornea, ad peripheriam costato-carinata, late et profunde umbilicata: anfr. 5 planulatis, spira depresso-conica, suturaé profunda, marginata: subtus convexa, costulis obsoletis cincta: apertura ampla, rhomboidea, peris- tomate revoluto. Diam. 2; alt. 14 poll. Hab. Tavoy. Rev. F'. Mason. In size and form it is like H. lampas from Jamaica; but differs especially in having a broad, deep umbilicus. Hetrx [s. g. Corilla] REFuGA. T. sinistrorsa, discoidea, supra plana, infra concava, viridi-cornea: anfr. 6 arcte volutis, confertim striatis, ultimo propé aperturam deflexo; sutura impressa : apertura perobliqua, subcordiformi, peristomate albo, reflexo, callo simuoso con- nexo; fauce lamella alba, flexuosa, ad anfractum penultimum vol- vente instructa. Diam. 2; alt. poll. Hab. Tavoy. Rev. F’. Mason. This remarkable shell is almost exactly like H. carabinata, Fer., except that it is reversed, and has no lamella revolving within the outer lip. Heitix HoNESTA. ‘T. orbicularis, depressa, subcarinata, tenuis, nitida, submargaritacea, straminea vel albida, sub-perforata, subtus lineis subtilibus volventibus striata: anfr. 5 convexis; sutura lineari, marginata: apertura lunata, labro simplici, acutissimo, ad umbilicum reflexo. Diam. 59,3; alt. 4 poll. Hab. Tavoy. Rev. F. Mason. A plain, simple shell, resembling H. fusca more than any other species I have seen. It is, probably, a NANINA. Butimus MonruiFERvS. T. conico-oblongata, plerumque sinis- trorsa, levis, luteo-cinerea, flammulis longitudinalibus, fascia suturali lineari, et fascia subsuturali interrupté fuscis; regione umbilicali fusca, fascia lutea divisi; anfr. 7, ultimo subcarinato ; apertura sub- ovata, basi angulataé, sub-effusa ; labro reflexo, rubro-purpureo, ad columellam dilatato; fauce purpurea. Long. 14; lat. 75 poll. Hab. Tavoy. ev. F. Mason. Differs from B. contrarius and B. levus, Mull., by its angular aper- ture, and the color of its lip and throat. The interrupted line, just in front of the suture, exists in all the specimens I have seen. It does not always occur reversed. [Compare B. Theobaldianus, Bens. ] Pupa [Torquilla] merxrra. T. parva, subfusiformis, pellucida, nitida, straminea, apice obtuso: anfr. 7 convexis; sutura impressa, denticulata : apertura ampla, subquadrata, plica columellari, plica basali, plicé labiali et lamella posteriori ringens: peritremate undu- lata, reflexa, alba. Long. -2,; lat. 3, poll. Hab. Tavoy, in hortis. Rev. F. Mason. Zo P My 199 The general aspect of the shell is not unlike that of Achatina octona, in company with which it was found. SUCCINEA SEMISERICA. T. fragilis, ovalis, a tergo depressa, postice straminea, antice albido-sericea, longitudinaliter plicoso- striata: anfr. 24, ultimo maximo; apertura ovata, patulaé faciem in- feriorem feré adequante. Long. 4; lat. #5; alt. 33, poll. Hab. Tavoy, in hortis. Rev. F. Mason. Its shape is like S. tigrina, Fer., and it is well characterized by the peculiar silky-white or pearly surface of the anterior half of the shell. Merania Hercuira. T. ponderosa, elongato-conica, fusco-viridis, decollata: anfr., numero integro ad 15, superstitibus 2-5, planulatis, infra suturam constrictis, plicis profundis 4-nodosis longitudinalibus ; ultimo subcarinato, basi striis crassis cincto : apertura subrhomboidalis, antice producta, callo columellari rotundato, crasso, fauce plus minusve fusca. Long. 3 poll.; lat. 1 poll. Hab. Tavoy River. Rev. F. Mason. This is the largest Melania with which I am acquainted, and is very massive. It differs from the large Melania found about Calcutta (of which, also, Iam unable to find any description), by its larger size, darker color, more numerous folds, which bear about four tubercles each, instead of having usually only a median carina bearing acute tubercles. AMNICOLA crncTA. T. minuta, tenuis, ovato-oblongata, imper- forata, pallide cornea, decollata: anfr. (superstitibus) 3, ventricosis, ultimo magno, subcarinato, lineis volventibus, et interdum fascia fusca, cincto: apertura ovata, basi admodum producta, labro simplici. Long. haud 1; poll. Hab. fluv. Tenasserim, Burmah. fev. F’. Mason. Nucvuta tTurempa. T. alba (dealbata,) sub-equilateralis, sub- rhomboidea, postice acuta, antice rotundata, ventricosa, margine ventrali pendente, ubique lamellis concentricis obtusis reflexis con- fertis ornata: natibus prominentibus; cardine dentibus 21 utroque latere instructa. Long. 4; lat.4; alt. 55 poll. Hab. This must resemble closely N. twmida, Reeve, but is in no wise angular anteriorly. Buiimus Turnrx. T. oblongo-ovata, a tergo compressa, nitida, cervina, flammulis albidis quodammodo seriatis marmorata, longitudi- naliter striata, lineis granulosis volventibus decussata: anfr. 5 con- vexis, ultimo magno: apertura ovali, peristomate valdé revoluto, rosaceo: columella obliqua, pliciformi: umbilico obliquo, rimato. 200 Long. 24; lat. 44 x .9; apert. 1,3, poll. [Hab. Brazil ?.] Its surface is covered with shining, longitudinally compressed granules, like B. goniostoma, and evidently belongs to the same group; but, in other respects, it is more like 6B. pudicus and B. Bolivarii, Few exceed it in beauty. OS> Vol. ii. 218, (June, 1847.) Hevrx anecuina [is H. [Corilla] achatina Gray ]. MELANIA PAGODULA. ‘TT. crassa, sub-rhombea, turrita, tenuiter striata, fusco-castanea, decollata; spira elevata, conici; anfr. 4, an- culo spinis 6 robustis armato, ultimo antice subrostrato et costulis ad 4 cincto: apertura ovata, antrorsum producta, fauce ccerulescente fusco maculata. Long. 14; lat. § poll. Hab. Thoungyin River, a branch of the Salwen. Mrs. Vinton. This remarkable shell is almost precisely like MM, armigera Say in its structure and proportions, but is three times as large, something like Jo spinosa Lea. MELANIA BACCATA. ‘T. magna, crassa, elongato-turrita, epider- mide fusco-castaneo induta; spira decollata, anfr. 6 rotundatis, plicis longitudinalibus et costis volventibus triseriatim nodoso-decussatis, ultimo ad basim 4 costato: apertura lunata; labio antice producto ; columella aurantié valde arcuata; fauce ceralescente fusco fasciata. Long. 2; lat. $ poll. Hab. Thoungyin River. Mrs. Vinton. Closely allied to M. inquinata, but is distinguished by its ranges of prominent pustular knobs and its orange columella. MELANIA HUMEROSA. _ T. olongato-turrita, simplex, viridi-cornea ; spira derosa, anfr. ad 8 convexis, prope suturam obsolete angulatis, lineis tenuissimis spiraliter striatis, ultimo antice costato-striato: aper- tura sub-ovalis, antice vix effusa; columella rotundati, alba; fauce fasciatim sub-livida. Long. 1%; lat. § poll. Hab. Manko, Tavoy. Mrs. Vinton. Allied to MZ. Virginica Say, in size and form, though somewhat more conical and robust, and with angular whorls. It still more nearly resembles AM. intermedia Von den Busch. MeLanira FLUCTUOSA. T. parva, elongata, sub-cylindrica, fulvo- cornea, longitudinaliter plicata, plicis 8-10 compressis, acutis, fusces- centibus; anfr. ad 6 (apice derosi) vix convexis; sutura haud impress: apertura parva, ovata, vix effusa. Long. 3; lat. 4 poll. Hab. Newville, Tavoy. Mrs. Vinton. Allied to M. plicifera Lea, but smaller and more cylindrical, with the plaits extending to the base, and destitute of the coarse revolving Jines. NERITINA CAPILLULATA [is NV. reticularis Sowb.]. 201 NERITA ARTICULATA. TT. obliqué semi-globosa, postice planulata, anticé dilatata; spira prominula, anfr. 3, liris prominulis atro-pur- pureis albo-articulatis 25-38 cinctis, interspatiis latioribus lucidis car- neolis decussatim striatis: apertura magna, semilunaris; labro acuto atropurpureo, callo albo creberrimé suleato firmato ; fauce luted ; labio excavato, extrorsum plicato; columella acuta, sinuata, denticulis 3-4 armata. Diam. $; alt. 4 poll. Hab. Tavoy. Much like N. lineata, but a little more oblique and less globular ; the girdling threads are less numerous, less in relief, and distantly articulated with white ; color more flesh-like ; grooves on labrum more numerous; spire a little protruded. NEMATURA PUNCTICULATA. T. minuta, subrhombea, compressa, solida, nitida, pallidé virescens, omnind sub lente puncticulis serialibus insculpta; spira elevata, anfr. 5 convexis, ultimo permagno, versus aperturam valdé contracto: apertura parva, dispar, rotundato-ellip- tica, tubuliformis; labro simplici crasso, continuo. Long.+; diam. 4,1 poll. Hab. Tavoy. Mrs. Vinton. About the size and shape of NV. delte, Benson, but the aperture is much more distorted, there is no approach to an umbilicus, and its punctured surface is sufficiently distinctive. [A. Adams has described a species under the same name, very possibly the same shell. Mag. Nat. Hist. Oct. 1853.] z Unio GENEROSUS. T. magna, solida, transversa, oblongo-ovata, inequilateralis, antice rotundata et angustata; postice obliquata, sub- rostrata, ad apicem truncata; margine ventrali arcuataé; m. dorsali recta, adscendente ; umbonibus contiguis haud elevatis; valvis sub- tnmidis radiatim substriatis, postice sub-costatis; epidermide fuligi- nosa, disco nitido; dentibus remotis, cardinalibus elongatis, obliquis, laminatis; margarita alba, vel salmonacea, limbo iridescente. Long. 33; lat. 13; alt. 24 poll. Hab. Newville, Tavoy. Mrs. Vinton. 5 The general form, convexity, and color is like that of Marg. Von- denbuschiana, Lea, though the largest specimens are more arcuated at base, and the younger ones are more oblong, like U. complanatus, Lk. The cardinal teeth are like those of U. marginalis, a more cylindrical shell, but they are still more elongated. OS> Vol. ii. 262, (December, 1847.) PuysaA vINosA. T. tenuis, ovato-globosa, badia, spiraliter minu- tissimé striata, epidermide tenui induta; spira obtusa, anfr. 4, ultimo per-magno: apertura ovato-lunata, ? longitudinis teste equante, hepatica; columella recta, tenui. Long. 3; lat. $ poll. Brought by Dr. C. T. Jackson from the Lake Superior region. A remarkably inflated species, most like P. ancillaria, Say, but is 26 202 not shouldered nor widest behind the middle, nor tapering anteriorly. It is well distinguished by its thin structure, striated surface, wine-red color externally, and liver-brown internally. Pura precora. T. minuta, cylindracea, tenuis, nitida, lucida, vinosa, tenuissimé striata, perforata; spira anfr. 5-6 ventricosis, apice rotundata; suturaé profunda: apertura circularis, postice truncata, dentibus 4 armata quorum uno ad columellam, duobus ad labrum positis ; peristomate vix reflexo. Long. ;1,; lat. 3, poll. Brought by Mr. T. R. Dutton from the region of Lake Superior. It is rather larger, more cylindrical, and darker colored than P. corticaria, Say. Its aperture is smaller and differently armed. In form, color, and armature it is more like P. Gouldii, Binney, which is not more than half its size. NaTica FrossaTa. T. depressa, orbiculato-conica, solida, tenuis- simé striata, cinereo-albida, prope suturam purpurascens, subtus pal- lescens ; spirad anfr. 5 convexis, decliventibus, ultimo ad peripheriam subangulato: apertura semilunaris; fauce hepatica; callo columellari regionem umbilicalem semi-implente, castaneo ; umbilico magno, canali profundo, preecipiti, epidermide stramineo spiraliter striato induto, cir- cumacto. Lat. 1}; alt. 13 poll. Hab. Florida. This would not, at first sight, be distinguished from N. duplicata Say, which it greatly resembles in form and coloring, but the umbilical region is entirely different; and the deep wide channel leading to the umbilicus bordered by an acute ridge, and covered by a spirally striated epidermis is in striking contrast with the pale polished region adjacent. In this respect it is like NV. Lamarckiana. _ OG Vol. iii, 37, (June, 1848.) Specimens collected by Mr. J. Bartlett. SuccINEA LUTEOLA. T. variabili, ovato-turrita, solidiuscula, laxe striata, extus alba vel cornea, sed plerumque lutescente, intus lutea ; anfr. 4, supernis rotundatis, ultimo conico-ovato ; apertura modica, ovata, partem dimidiam longitudinis vix superante ; columella nor- maliter arcuata, haud plicata, ad regionem umbilicalem reflexiuscula. Long. 4; lat. 4 poll. Hab. ‘l'exas. Very variable in its proportions as well as in coloring. Short specimens resemble S. campestris of the South, but want its columel- lar fold. The elongated specimens are like S. amphibia ; and in the diminutive size of the aperture it is like S. vermeta. Fresh specimens are well characterized by their golden yellow color. It may possibly be Say’s S. undulata. SuUCCINEA CONCORDIALIS. ‘T. tenui, lucida, oblique ovata, acumi- nata, reflexa, cerea et ad apicem rubicunda, leviter striata et lineis 203 obscuris volventibus insculpta ; anfr. 3 perobliquis, supernis parvulis, tumidis, sutura profunda; apertura ovata, trientes due longitudinis teste equante, basi rotundat&é; columellé arcuata, absque plica, leviter arrecta ; intus micante. Long. 4; lat. 4 poll. Hab. near Lake Concordia. At first view, this might be mistaken for Limnea columella. Its color and texture are like S. amphibia, from which it differs chiefly in the slight upturning of the edge of the columellar lip, the presence of the obscure revolving lines, and the ruddy apex. Hewrx sELENINA. TT. parva, discoidea, pallida, tenuissima, exiliter striata, diaphana ; anfr. 5 convexis, ultimo subangulato, sutura im- press; basi convexo, umbilico infundibuliformi perforato; apertura angusta, lunari, labro simplici. Diam. + poll. Hab. Georgia and Florida. About the size of H. arborea, distinguished by its delicacy, its pale, opaline color, its small well-defined and deep umbilicus, its discoidal spire and its narrow aperture. Its color and superior aspect may be compared with H. lineata. [Compare H. vortex. ] Hewrx roruva [Capseiia]. T. parva, discoidea, pellucida, nitida, electrina, H. suppresse simili, umbilico infundibuliformi profundo perforata ; anfr. 63, vix convexis,-striis distantibus superné impressis, sutura marginata ; apertura semilunari, labro simplici, haud incrassato. Diam. + poll. Hab. Tennessee. This delicate little species has the size and color of H. indentata, and is similarly striated above; the whorls are numerous and closely convoluted like H. suppressa, but it has a larger umbilicus, like H. lasmodon, and has no thickening or plate within the aperture. HeLrx MAXILLATA. T. parva, globoso-lenticulari, pallidé casta- nea, solidula, H. hirsute simili: apertura lineari, labro reflexo, preter emarginationem inconspicuam dente obsoleto divisam integro, fauc lamellam sicut maxillam pone labrum gerente; lamella columellari recta, superne bifurcata. Diam. 4 poll. Hab. Tennessee. This shell, which is smaller and somewhat more globose than H. hirsuta, is well characterized by its partially bifurcated pillar tooth, and by the peculiar jaw-like plate, almost concealed behind the in- flexed lip, within the fauces. Heirx Leporina. ‘T. parva, lenticulari, lucida, rufo-cornea, pilosiuscula, leviter striat&é, vix perforata; spira depressa, anfr. 5 convexiusculis, ultimo superné subangulato; regione umbilicali exca- vato; apertura lunata, labro incumbente, reflexo, roseo, dentes duos albos sinum amplectentes gerente ; lamella columellari obliqua, alba, erecta, acuta, rectangulari, callo lineari superne ad angulum aper- ture juncta. 204 Diam. +; alt. 1 poll. Hab. Mississippi and Arkansas. Intermediate between H. hirsuta and H. inflecta, though smaller than either. It is less globose than hirsuta, while the aperture is much the same, except that the sinus of the lip is formed by the pro- jection of two teeth instead of by an emargination, in this respect resembling H. inflecta. From the latter it differs in the columellar tooth. It resembles H. pustula still more, but the umbilical region wants the peculiar channel of that species. Heirx vuitruosa. 'T. depressa, utrinque convexiuscula, triden- tata, rufo-cornea, late umbilicata, H. fallaci et H. texasiana inter- media; anfr. 5$ arcte volutatis, convexis, ultimo ad peripheriam sub- angulato ; apertura arcte lunari, labro albo, crasso, tortuoso, dentibus duobus instructo, quorum altero mediano profundé posito, retroce- dente, altero basali, marginali, falcato; lamella columellari obliqua, arcuata, erecta, faucem feré occludente. Diam. 2; alt. 4 poll. Hab. Arkansas and Texas. Differs from H. fallax in being generally smaller and more convex, with a narrower aperture more nearly closed by the teeth, and in having the basal tooth much more developed and the median one deeper seated and directed more inward; from H. éexasiana it is dis- tinguished by having an open umbilicus, and by having no line of callus connecting the pillar tooth with the upper angle of the aper- ture, forming a re-entering angle. Many other Shells are contained in this Collection, which are either new species, or very strongly marked varieties of northern types. Among them is one, which seems to be quite common from Georgia to Texas, and which Dr. Binney regarded as the southern form of H. thyroidus, though some of his specimens were labelled ‘“clausa ?” They have the globular form of H. clausa, sometimes approaching even to //. elevata in height ; the aperture is large and rounded, the umbilicus generally quite closed, and the columella sometimes pos- sesses and as often is destitute of a tooth like H. thyroidus. I think further observation will establish its claim as a distinct species, and in such case I would propose for it the name of H. BUCCULENTA. Another form, found in the southwestern States, is allied to H. appressa and H. palliata. It is a little more globular than the former, has its peculiar imperforate base, but its aperture is more open and rounded, and destitute of a tooth. H. Columbiana is still more globu- lar, smoother, with an open umbilicus and a peculiar sinuosity of the lip. I would indicate this form by the name of H. ABsEctra [DIVESTA ]. Pupa VARIOLOSA. ‘T. minima, ovato-conica, rufa, sub-perforata, confertim indentata; anfr. 4 turgidis; sutura profunda; apertura ob- 205 liqué semiovali, dente columellari, altero labiali, altero postico lamel- lari armata: labro vix reflexo. Long. {/; poll. Inhabits Florida. Smaller than any of our species except P. milium, and is distin- guished by its short, conical form. The five specimens examined, all presented the crowded thimble-like impressions under a magnifying power of 20 diameters. I think no other American species has the revolving tooth on the penult whorl. Pura mopica. T. minuta, fragili, ovato-conicé, elongata, alba vel cornea, edentata, anfr. 5 convexis, P. fallaci simillima sed minore dimidio, anfractibus duobus carente ; apertura campanulata, labro ex- panso, haud planulato. Long. #1; lat. 1; poll. Hab. Florida. Differs from P. fallax only in being one half its size, in having two whorls less, and in having a bell-shaped aperture with a thin revolute lip instead of a thick flattened one. CYLINDRELLA [Macroceramus] PONTIFICA. T. parva, ovato-fusi- formi, superné attenuata, griseo et fusco marmorata; anfr. ad 12 rotundatis, costulis crebris obliquis, alternis suturam pretereuntibus, ornatis, ultimo carinato: apertura laterali, circulari, campanulata ; columella recta, umbilicum linearem tegente; peristomate reflexo, feré continuo. Allied to Pupa unicarinata, Lk., and P. turrita, Pfeif., but is smaller, more coarsely ribbed, has a more complete aperture, project- ing to the left side, and is readily distinguished from either of them by the projection of the alternate ribs across the suture, giving the whorls a dentate or coronated appearance. Its coloring is like that of Pupa cinerea. CYLINDRELLA JEJUNA. ‘T. fusiformi, solidiusculé, truncata, pal- lide cornea, filis tenuibus albis longitudinaliter lirataé: anfr. superstiti- bus ad 9 (totis ad 18) convexis, ultimo exiliter carinato ; sutura bené impressa; collo brevissimo ; apertura expansa, peritremate albo, con- tinuo, anfractui penultimo haud annexo. Long. 2; lat. 345 poll. Hab. Florida. This may be a form of C. lactaria, so common in Florida, and which presents so many varieties, especially in the length of the neck and the development of the lip. But it seems to be constantly smaller, darker colored, more solid, and with more convex whorls. The peritreme also seems never to rest on the penult whorl, as is usually the case in C. lactaria. OS> Vol. iii. 64, (October, 1848.) GLANDINA BULLATA. G. testa papyracea, bullata, diaphana, ellip- soidea, lactea ferrugineo tincta, longitudinaliter crebro striata; spira 206 octantem longitudinis eequante, anfr. 5 convexiusculis ; sutura modica ; apertura 2 longitudinis teste, late lunata; columella modice arcuata, lamina callosa induta. Long. 1.5; lat. 0.8 poll. Inhabits Louisiana. Rev. E. R. Beadle. Differs from G. truncata in its extreme tenuity, inflated form, short spire, fewer whorls, paler color, finer striation, and nearly straight pillar. LIMNEA LANCEATA. L. testa fragili, diaphana, cornea, attenuata, striis incrementalibus et striis volventibus argute reticulata; spire anfractibus 6 planiusculis perobliquis, ultimo } teste «quante ; aper- turd angusta, dimidiam longitudinis fere adequante, posticé acuta ; plicé columellari conspicua, acuta, vix spirali; labro fascia castanea submarginali picto. Long. 4; lat. 4 poll. Inhabits north shore of Lake Superior, “ Pic Lake.” Prof. Agassiz. Next to ZL. gracilis this is the most slender species we have. It differs from L. attenuata and L. refleza in the flatness of its whorls, its aperture, which is proportionally much larger and narrower, and in being only about half their size. It may be compared to a large specimen of Physa hypnorum reversed. KG> Vol. iii. 193, (April, 1850.) Vaacrinutus Liperranus. V. corpore ovali, elongato, postice ampliato, fuscato infra pallidiori, maculis mequalibus laceratis nigris utroque asperso et linea dorsali mediano pallido notato ; solea trien- tem latitudinis adequante, transverse rugosa; tentaculis parvis oculi- feris bulbosis. Long. 2; lat. $ poll. Hab. Liberia. Dr. Perkins. A smaller and more slender animal than V. Floridanus. Its blotches are also larger and less numerous, and occur underneath, as well as on the back. In form, it compares somewhat with JV. Langsdorfii, from Brazil, but not in coloring. SucctineA spurcA. TT. parva, fragili, virescente, striis laxis, scabris, lutum cumulantibus; spire anfr. 3 ventricosis; sutura pro- funda; apertura rotundato-ovata, trientes duos longitud. teste ade- quante ; columella acuta, valdé arcuata, absque plica. Long. ;?;; lat. 2; poll. Hab. Liberia, on the moist sides of water pits, and in crevices of trees. Dr. Perkins. Similar to S. avara in form and in the peculiarity of becoming invested with an earthy coating. It differs in its paler color, and its more arched columella. SuccINEA HELICOIDEA. T. parva, laté umbilicata, tenui, stra- mined, supra oblique lirata, infra levigata; spira depressa, anfr. 34 rotundatis, ultimo subangulato ; apertura lunata, alta. 207 Diam. 4; alt. 4 poll. Liberia. Dr. Perkins. A singular shell, whose form and texture would lead us to pro- nounce it a Helix. But its small number of whorls, and the state- ment of Dr. Perkins that the animal is very large and sluggish, so that it cannot retract within the shell, would bring it more properly within this genus. The sculpture of its upper and lower faces distin- guishes it. HeELIx INDECORATA. T. parva, tenui, orbiculato-depressa, arcte umbilicata, nitida, glabra, virescente ; spira depresso-convexa, anfr. 5 convexiusculis, ad suturam bene impressam marginatis; subtus convexa; apertura lunata, labro acuto. Diam. 2; alt. 4 poll. Hab. Liberia. Dr. Perkins. A very plain species, resembling in form small specimens of H. ligera ; but in the characters of surface and umbilication it is more like a diminutive H. inornata. The whorls revolve more closely in the same space, and form a more dome-shaped spire than the incip- ient whorls of H. pellucida. Hewrx cerea. T. parvula, vix perforata, fragili, depresso-orbicu- lari, lucida, nitida, albido-straminea; spira depresso-conica, anfr. 5 convexiusculis ad suturam marginatis; apertura lunata; labro acuto. Diam. 4; alt. 4 poll. Hab. Cape Palmas. Dr. Perkins. Very similar in its characters to the preceding, but is less than half its size, of a very different color, and the umbilical region differs considerably, especially the reflection of the lip at that part, which does not cover the portion of the umbilicus next the aperture, but turns round at right angles to it. It may be compared to H. alliaria, but the umbilic is not half as large. The animal is glossy black and extremely active. Heiix Tatcosa. ‘T. parva, tenui, vix perforata, pyramidali, talcosa, spiraliter acutissimé lirata, basi glabra; spira conica, anfr. 7 ? I ’ bo} ? planis, ultimo acutissime carinato; apertura rhomboideo-lunata. Diam. 2; axis, 3. Hab. Cape Palmas, on bark of trees in forests. Dr. Perkins. Remarkable for its trochoid form and silvery lustre, on account of which it would most likely be pronounced a marine species. #H. Ibuensis accords well with this, excepting that the sharp revolving lines, about three or four on each whorl, are not mentioned. Buiimus Mucipus._ T. solidulé, ovata, mamillata, imdentata eranuloso-striata, flavida, longitrorsum strigis interruptis nigris ornata ; spira ovali, anfr. 6, supernis ventricosis, ultimo abnormali, contracto ; sutura marginata et crenulata ; apertura parva, rotundato-lunata ; labro acuto, pallido; columella subtruncata; fauce nigro et luteo variegata. Axis, 13; lat. 3 poll. Hab. Interior of Liberia. Dr. Perkins. 208 Allied to B. interstinctus, from the same region, but much smaller, shorter in proportion, and rather remarkable for the mottling of colors, which causes it to look as if mouldy. Buiimus uyrracinctus. T. elongata, ovato-conicaé, vix per- forata, tenui, straminea, fasciis duabus badiis basalibus cincta; spira acuta, anfr. 6 convexiusculis, ultimo subangulato § long. teste ade- quante; apertura ampla, obovata; labro acuto; columella reflexius- cula, haud appressa. Long. $3; lat. 2 poll. Hab. Taboo and Fishtown, Liberia. Dr. Perkins. From several similar African shells, this differs in having but two bands, the posterior one fairly entering the aperture so as not to appear at the suture on the other whorls as in B. newricus, meridiona- lis, and Bengalensis, from the latter of which it can scarcely be dis- tinguished, except by this peculiarity. Both bands are often wanting. ACHATINA VENTRICOSA. ‘T. magna, solidi, conico-ovata, ex cor* neo virescente, longitrorsum obscure flammulata, granoso-reticulata ; spira conica, anfr. 64 convexis, ultimo ventricoso, obtuse carinato ; sutura subcrenulata; apertura rotundato-ovata 2 long. teste ade- quante ; labro everso intus incrassato, submargine et columella nitidé purpureis ; columella valde arcuata. Long. 5; lat. 33 poll.; aperture long. 3; lat. 13 poll. Hab. Liberia. Closely allied to A. purpurea, but the form is constantly more ven- tricose, and by comparing an extensive series, including the young, the difference is plainly not accidental. The color is more mixed with green and less conspicuously flammulated, and often flecked with triangular pale spots, and the aperture more of a blood red. Dr. Perkins says it is only found in the interior, while A. purpurea is found near the sea. ACHATINA BALTEATA. T. tenui, levi, ovato-conicé, tenuissimé striata, vinosa argenteo-lineolata et fascia sub-basali argented semper cincta ; spira conica, apice mammillata, anf. 7 convexis supernis sub- granulosis, ultimo angulato ; apertura 2 long. teste, lunata ; columella subrecta, tenui, modicé truncata, alba rufo marginata. Long. 13; lat.7 poll. Hab. Liberia. Dr. Perkins. A very peculiar shell, both in its conical form and in its marking. The broad silvery band, which is in itself enough to distinguish it, as well as the delicate revolving threads, resemble the hydrophanous bands, on the Bulimi from the Philippine Islands, but they do not disappear on being wet. [Syn. A. Gouldi Rv.] AcHATINA [subgen. Electra] PARITURA. T. elongata, tenui, 209 nitida, dilut® cornea, longitrorsum concinné lirata ; spira turrita, ad apicem obtusa, anfr. 7 convexis, ultimo dimidiam long. teste ade- quante; suturaé profunda; apertura angusta, subauriculata; colu- mellaé valdé arcuata, involuta, canalem basalem efformante. Incola vivipara. Long. 1; lat. 37, poll. Hab. Buried under leaves or in earth, during the dry season, near the sea, Fishtown, Liberia. Closely approaches A. Hugeli, Pfeif., but is more slender, more obtuse at apex, more coarsely and regularly striate, and with fewer whorls. In numerous specimens of the animal preserved in spirits, the young are plainly seen in the oviduct, already escaped from the ego. Mr. Sowerby has also described a viviparous Bulimus (Malac. Mag.) which Dr. Perkins also collected at Cape Palmas. AMNICOLA CILIATA. T. parva, elongata, imperforatd, fusco- viridi; spira acuto-conicé, anfr. 6 subangulatis ad angulum serie aculearum recurvarum armatis, ultimo ad peripheriam acuté cari- nato; apertura circulari, labro nigro. Long. 4; lat. 4 poll. Hab. Deea River, Liberia, on the muddy margins. Dr. Perkins. A beautiful little species, grouping with a somewhat larger one from New Zealand, described by me as Melania corolla, and a smaller one from Jamaica, found by Professor Adams, and named by him M. spinifera. A further examination of the apertura and operculum, and also the animal of the New Zealand species, satisfies me that they ought all to come under the genus Ammnicola. AMPULLARIA [Pomus] BALANOIDEA. _ T. solida, imperforata, glo- bosa, decollata, fusco-olivacea, fasciis numerosis saturatioribus cincta, lineolis undulatis granulosis confertis insculpta; spira elevata, anfr. superstitibus duobus ventricosis, ad suturam appressis; apertura rotundato-ovata, labro acuto; columella arcuata, planulata, croceo tincta, fauce castaneo et albido fasciata ; operculo tenui. Diam. $ poll. Hab. Grand Cape Mount, Liberia, on rocks in rapid streams. Dr. Perkins. A small, very solid species, somewhat similar to A. Storeria, Jay, from the River Amazon. TricHoTropts [Fossarus] pustLLus. T. minuta, rhomboidea, um- bilico semicirculari perforata, albida, striis minutis volventibus cincta ; spira conica, anfr. 4 convexis, ultimo ventricoso et costis elevatis tribus cincto; apertura semicirculari; columella recta, ad planitiem labri acuti trilobati haud assurgente ; umbilico semicirculari. Axis, } poll. Hab. Crevices of rocks beaten by surf, at Fishtown, Liberia. Dr. Perkins. 27 210 This curious little shell was also collected by the Exploring Expe- dition, probably at the Cape de Verds. No hairy epidermal processes appear on any of the specimens; yet I cannot doubt that it belongs to the genus where I have placed it. [Genus Fossarus. ] APLYSIA FIMBRIATA. A species somewhat resembling A. dacty- lomela from South America was collected and figured by Dr. Perkins, without, however, giving the colors. It is about five inches long when fully extended, and about three and a half inches across the lobes when quite expanded. The margin of the foot is somewhat corrugated, and the margin of the lobes smuate. There are eight or ten large, black annuli on each side of the exterior of the mantle. The margin of the interior, which is dark, is digitate with white, the digitations being more or less rectangular. The cervical tentacles are small and slender; the cephalic tentacles have a coarsely fringed margin. The calcareous shield is thin and delicate, with a strong epidermis extending beyond its edge ; it is obliquely ovate-triangular, quite acute at apex. BULIMUS INTERSTINCTUS, proves to be very variable in form, and especially in color, being green, brown, ochreous, sometimes spotted, &e. Bulimus rubicundulus, Nob. is one of these varieties. OG> Vol. iv. 87, November, 1851. Puowas [Parapholas] ovorpra. ‘T. ovoidea, solidula, cinerea, postice hiantissima et epidermide valdé vegata; margine ventrali antic? lamina calcarea clauso ; apicibus ad trientem anteriorem test positis; valvis suleo mediano partitis, portione antico rotundato laminis concentricis radiatim striatis exasperato, portione postico sub- cylindrico, striis concentricis remotis notato ; apophysi cardinali sub- ulato, ad apicem dilatato; valvis auxiliariis nullis ? Long. 3; lat. 13; alt. 2 poll. Inhabits Monterey. Maj. Rich. Remarkable for its short and ovoid form, and its great dehiscence. The epidermis is prolonged posteriorly, much as in specimens of M/ya truncata. There seem to be no accessory pieces at the hinge, though the hinge margin is reflected into a broad plate on each side so as to answer the same end. PeTRICOLA BULBOSA [is P. robusta, Sowb. ]. Macrra nAsuta. T. solida, transversa, ovato-cuneata, albida epidermide straminea posticé incrassata et fuscaté iduta; vertice feré mediano, acuto; latere antico angustato, compresso, subadscen- dente; latere postico dilatato, truncato, hiante; area dorsali postica lanceolata, excavat&é: intus polita, candida; fovea ligamentali per- obliqua ; dente V-formi tenui, elongato ; dentibus lateralibus crassis. 211 Long. 34; lat. 1; alt. 24 poll. Mazatlan, Lieut. Green; San Pedro, Maj. Rich. [This species agrees so nearly with M. falcata, Gd., that until a direct comparison is made it may be considered as synonymous. J. falcata, however, was found at Puget’s Sound. | Mactra MENpDICcA [Gnathodon trigonum, Petit; Journ. Conchyl- iol., May, 1853]. LUTRARIA UNDULATA. T. candida, papyracea, ovata, posticé hians, nisi prope marginem posticum concentrice undata, concinne rugosa ; apicibus vix anticis; latere antico rotundato; latere postico angustato, compresso, ad apicem rotundato; margine dorsali declivo, rectiusculo, costé submarginali munito. Long. 28; alt. 2; lat. 14 poll. Inhabits La Paz, Lower California, Lieut. Green. Differs from L. canaliculata, Say, of South Carolina, in its strictly ovate form, in having the beaks anterior, in having the posterior half less compressed and more gaping, and in the acute ridge bordering the posterior margin. [The figure of Mactra elegans, in the Tanker- ville Catalogue may have been intended for the same shell.] LUTRARIA VENTRICOSA. T. tenuis, fragilis, ventricosa, ovato- cuneata, alba, epidermide stramineaé rugis remotis radiata induta ; apicibus vix anticis, tumidis; latere antico angustato, compresso ; latere postico dilatato; facie dorsali valde declivi, angulo obtuso limitata, aream latam concavam efformante linea submarginali par- titam: intus alba, punctis nitidis notata. Long. 39; lat. 1$; alt. 3 poll. Inhabits Mazatlan, Lieut. Green. This would at first sight seem identical with L. carinata, from the coast of Carolina and Florida. But it is more ventricose, less solid, the beak more arching, the region of the posterior margin excavated, and the posterior umbonal ridge obtuse and destitute of a crest. A small African species (Mactra albida) is a miniature of this shell. [It has been thought, by some, to be MW. exoleta, Gray (1837) ; but I think it is not. ] AMPHIDESMA [Semele] FLAVESCENS. T. subrotunda, compressa, striis concentricis lamellosis decussatis insculpta, aurantia demum albida et epidermide fuscé induta; apicibus medianis, acutis, haud elevatis; area dorsali anticé excavata, posticé lanceolata, concava, linea limitata; intus flavo-tincta punctis nitidis notata ; sinu siphonali spatulato, striis crebris divergentibus insculpta; fovea ligamentali profunda, elongata; dente laterali antico ad apicem approximato. Long. 23; alt. 24; lat. 14 poll. San Diego. Lieut. Green. Usually found about half the above size; the concentric lamella become worn off and more irregular towards the margin. The in- 212 terior is faintly tinted yellow when young, but very richly so when old. It is near A. corrugatum, Sowb. Donax opesus. TT. parva, solida, ovato-cuneata, ventricosa, nitida, radiatim leviter striata, coloribus albidis et fulvidis omnind vel radiatim picta et plerumque zonis violaceis ornata; angulo pos- tero-dorsali rectangulari; facie posteriori cordiformi, subtriangulari ; latere antico angustato, cité rotundato ; margine ventrali denticulato, postice coaretato: intus alba, vel flavescens, violaceo nubeculata, ad marginem dorsalem fuscata. Long. ;°,5 alt. 5,3 lat. 74, poll. San Diego. Lieut. Green. In general appearance, especially as to striation and posterior area, it is much like D. anatinum; but the angle at the apex is more nearly a right angle, the anterior margin is less acutely rounded, the stria are none of them punctate; some of the small specimens are very tumid. The coloration is quite various. TELLINA MINIATA. T. transversa, ovata, tenuis, compressa, valde hians, concentrice striata, erubescens ; apicibus ante-medianis ; latere antico semiovali; latere postico ovato-triangulari; margine ventrali sub-pendulo: intus miniata: cardo dentibus duobus divergentibus utraque valva instructus ; nymphis conspicuis. Long. 2; lat. 3; alt. 14 poll. Inhabits San Juan. Lieut. Green. Compared with the analogous West India species, 7. rosea, it is longer, more delicate, less convex, more inequilateral, more acumi- nated posteriorly, the ventral and posterior margin less arcuate: color much more roseate externally, and intensely red internally ; hinge in that species with but a single tooth and the vestige of one at its side. [It is described as sanguinolaria purpurea, Desh. (1854) ]. Lucina [Diplodonta] orBeLLA. T. parva, subglobosa, tenuicula, albida, concentrice inequaliter striata; apicibus medianis, haud emi- nentibus, absque lunula antica; lateribus fere symmetricis; intus alba. Cardo valvee dextree dentibus duobus quorum antico minore — valvze sinistre dentibus duobus quorum antico bifido, postico perobli- quo, instructus; dentibus lateralibus nullis; cicatricibus leviter im- pressis, palleali serie punctorum composito. Long. 4; alt. $5 lat. $—4 poll. San Diego. Lieut. Green. The size and globose form of this shell recalls Z. columbella, Lam. (L. Adansonii, D’Orb.); but the valves are much less solid, the beaks less elevated, and have no area on either side of them; and the surface is not lamellar. L. globularis may be more like it. Some specimens are nearly perfect spheres, and all are very convex lenses. TELLINA (Strigilla) FucATA. T. carnari@ simillima, sed rotund- ior, striis rarioribus, latioribus et magis angulatis, haud undulatis in- sculpta; intus omnino miniata. 213 The species named Tellina carnaria is one of those which have been regarded as occurring in widely separated seas, in some of its varieties. J am inclined to think that upon close examination they may be fairly separated, and I have removed the Pacific shell on account of the marks designated above. ‘The interior is throughout deep carmine, and not roseate passing into white at the margin, as in T. carnaria; the strie are less numerous and deeper cut, and their angle of flexure is more acute, so that on the disk they are more vertical, and become crowded and confused at the margin. ARTHEMIS SACCATA [is Cyclina subquadrata Hanley (1845) ]. CARDIUM LUTEOLABRUM. ‘T. magna, ovato-globosa, postice truncata, albida epidermide tenui lutescente induta ; apicibus sub- medianis, tumidis, contiguis ; valvis radiatim costatis nisi ad marginem dorsalem anticalem ; costis 42 rotundatis, canali profundo sejunctis, et aculeis prostratis (postremis fornicatis), ad angulum anticum armatis: intus alba, dentibus marginalibus luteo tinctis. Long. 34; alt. 3; lat. 24 poll. Inhabits San Diego. Lieut. Green. This resembles C. pseudolima, and has been regarded as such ; but the position of the spines at one angle of the ribs instead of along the middle, and the color of the marginal lip, which in that shell is roseate, may alone distinguish them. It has also a more rounded out- line and more globular form, and the ribs are more numerous; the grooves between the ribs are deeper. ANODON ciconrIA. ‘T. solidula, transversa, oblongo-ovata, ven- tricosa, epidermide lutescente-cornea induta; apicibus ad trientem anticum longitudinis positis; latere antico angusto, rotundato; latere postico dilatato, ad apicem acuto; margine dorsali haud angulato ; margine ventrali rectiusculo, antice hiante; declivitate postico tumido, haud angulato; margarita ex ochraceo incarnata, demum argentea : cavositas apicalis ampla. Long. 4; alt. 235 lat.1 poll. Mexico? Lieut. Green, Maj. Rich. It resembles A. anserina, from Brazil; it is thicker in substance, more tumid on the posterior half, and the epidermis and nacre are quite differently colored. It is more like A. implicata than any other North American species. [Some have thought it might be A. glauca, Valence. ] Lirnopomus [Lithophagus] ratcatus. T. fragilis, sub-cylin- dracea, falcata, postice ad declivitatem umbonalem valdé angulata, margaritacea epidermide crassi castanedé rugis interdum bifureatis corrugata induta, apicibus ad octantem anteriorem positis, valdé in- volutis ; latere antico dilatato, subgloboso; latere postico arcuato, coarctato-acuminato, superneé fimbriato. 214 Long. 3; alt. et lat. $ poll. Monterey, in indurated marly clay. Maj. Rich. The slender, faleate, and angular form of this shell clearly distin- guishes it from all other species. [A specimen in the cabinet of Mr. Cuming, considered as coming from New Zealand, has been described by Philippi under the name of Lithophagus Gruneri. The resem- blance to our shell is very great if not identical. An error as to the locality may have been made. ] Mytitus GLomeratus. ‘T. parva, solidula, arcuatim oblongo- ovata, postice obtusa, nitida, ex indico nigrescens; apicibus remotis, excurvatis ; valvis ventricosis, oblique subangulatis; margine lga- mentali recto demum subitd arcuato; margine ventrali recto vel excurvato ; cardinis altera valva dentibus duobus, altera tribus; intus argentata, ad limbum nigra ; cicatricibus profundis. Long. 3; alt. 2 poll. San Francisco. Maj. Rich. A very curious species, clustering on sea-weed in the most crowded manner, so that two adjacent specimens sometimes wear each other nearly through, from friction in opening and shutting. ‘This cireum- stance, with the strong hinge and deep cicatrices, show that the speci- mens are mature. The byssus is coarse, wax yellow. Lima TeETrica. T. solida, oblique ovato-triangularis, albida, costis radiantibus ad 18 squamis semi-erectis posticis longioribus armatis, horrescens ; apicibus acutis, elevatis, remotis, muriculatis ; margineli byssali rectilineari, hiante ; area cardinali lata, valida; fovea ligamen- tali minime profunda, costa transversali suffulta. Long. 14; alt. 14; lat. $ poll. Gulf of California, La Paz. Maj. Rich. Compared with L. squamosa, it is narrower and more compressed ; the dorsal and ventral margins are less broadly rounded ; the scales are more crowded, twice as long, inflexed at their points, and much more developed at the dorsal margin; there are no striz on the dorsal area. The remarkable brace or rib under the ligament pit, by which a deep cavity at the apex is formed, is remarkable, but possibly accidental. AVICULA STERNA. TT. solidula, badia radiis pallidis ornata ; epidermide cinerea serratim fimbriatéa induta; apicibus ad quad- rantem anteriorem positis ; alé semicirculari, modice obliqua, declivi- tate umbonali tumido, abrupto; cauda longissima, gracili; auriculis magunis, radiatim striatis ; fissura byssali profundissima, acutangulari : margarita argentata, valdé iridescens ; limbo fusco-marmorato. Long. 24; lat. 14; alt. poll. Inhabits Mazatlan. Lzeut. Green. Has the general appearance of A. semi-sagitta, but the wing is less oblique and curves directly into the cauda without any sinus; the 215 byssal sinus is deeper and much more acute, making a trapezoidal auricle. The cauda is much shorter in A. Tarentina and the wing much more oblique. It most nearly resembles a Florida species, but in that the byssal angle is obtuse, the auricle triangular, the cauda shorter. US> Vol. v. 126, (February, 1855. ) PEDICULARIA DECUSSATA. 'T. solida, variabilis, plerumque ovalis, striis radiantibus et volventibus concinné decussata ; apice laterali, obtuso: apertura crescentica; labro incrassato admodum revoluto ; columella recta, acuta, suleata. Long. 2; lat. + poll. Inhabits coast of Georgia, where it was dredged in the Coast Survey at a depth of 400 fathoms. This genus was established by Swainson on a single species from Sicily, P. Sicula, which Mr. Gray says had been described by Philippi as Thyreus paradoxus. Its well-marked apex is on the left side, as in Concholepas, which, in miniature, it greatly resembles, and to which Mr. Gray thought it to be allied. I should rather approxi- mate it, for its structure and habits, to Leptoconchus madreporarum, Gould (Purpura monodonta, Quoy). The shelf on the left is not simply a partition, but a true columella, which, if broken across, shows an entire volution within. There is always found a small notch or canal at both extremities of this columella. HELIX ZRUGINOSA [ARROSA]. T. globoso-conica, solidula, umbili- cata, indentata et minutissimé granulata, coloribus rufo-olivaceis et flavis variegata et fascia fusca cincta ; anfractibus 7 convexis: apertura rotundato-ovata ; labro reflexo, incarnato ; fauce livida. Diam. 13 poll.; axis, 4 a 5% poll. Brought from San Francisco by Dr. Bigelow. Has the general form and coloring of H. Townsendiana, Lea, and the aperture of H. tudiculata, Binney. The former has a different aperture, revolving striz, and is destitute of a band; the latter is not umbilicated ; and neither have a granulated surface. [The name first given was preoccupied by Pfeiffer. ] HELIx INFUMATA. T. magna, discoidea, biconvexa, ad periphe- riam obtuse carinata, late umbilicata, supra infumata et rugis minutis obliquis asperata, infra nigerrima, nitida et minutissimé granu- lata; anfr. 64 convexiusculis: apertura rhomboidea; labro rufo, basi reflexiusculo ; fauce sericea, lilacina, prope labrum fuscescente. Diam. 14; axis, + poll. Brought from San Francisco by Dr. Bigelow. Has about the form and color of H. plicata, Born, without its com- plicated aperture. It might at first be mistaken tor H. Nuttallii Lea, but is distinguished by its lenticular form, smoky black color, and its peculiar rasp-like and granulated surface. 216 PHysA BULLATA. ‘'T. magna, ovato-ventricosa, tenuis, fragilis, lucida, cornea: spira elevata, acuta; anfr. 6, ultimo inflato; sutura bene impressa: apertura late ovata, ? long. teste adequans; labro tenui, rufo submarginato ; columella valdé flexuosa, callo induta. Long. 1 poll.; lat. $9 ad $4 poll. Found in Oregon, by Dr. J. G. Cooper. Distinguished by its large size, inflated form, and delicate structure ; sometimes the form is somewhat cylindrical. It accords most nearly with Haldeman’s pl. 3, fig. 9, which was given him as P. Sayi Tap- pan. It is much more delicate, and less polished than P. heterostro- pha Say, and the aperture is less elongated. PuysA HUMEROSA. TT. subrhomboidea, solidula, polita, albida : spira acuta; anfrac. 5 tabulatis: apertura $ ad 2 long. teste ade- quans, postice rotundata; labro expanso; columella vix plicata, callosi, fere perforata. Long. $ ad 5%, poll; lat. 3 poll. Found by Dr. Thomas H. Webb, and by W. P. Blake, in the Colorado Desert and at Pecos River. The broadly tabulated whorls, with the acute, elevated spire, and foldless pillar clearly distinguish this species. It is like P. tabulata, Gould, and the variety figured by Haldeman, as P. ancillaria, (fig. 7,) which he regards as a monstrosity ; the deep suture and simple colu- mella distinguish it from that species. PHysA virGATA. ‘T. modica, solidula, glabra, elongato-ovata, cinerea olivaceo longitudinaliter virgata: spira elevata, acuta ; anfrac. 4-5 bené discretis: apertura lunata, 2 longitud. testee adequans ; colu- mellé modice plicaté, valde callosa; faucibus luteo-rufescentibus. Long. 2; lat. 4 poll. River Gila, near San Diego. Dr. Thomas H. Webb. Quite remarkable as being the only species yet known with varie- gated coloration. The stripes are found on some part of every shell, and many are prettily ornamented throughout. In size and propor- tions it may be compared with P. microstoma, Hald. PLANORBIS AMMON. T. magna, discoidea, subconica, subtiliter striata; latere sinistro laté et profunde concavo, anfractus 4 obtuse carinatos exhibente; latere dextro concavo, anfr. 24 rotundatas monstrante: apertura ovato-triangularis, interdum utroque valde expansa. Axis, ad 1; diam. tad} poll. Cienaga Grande, the Colorado Low Desert. J. H. Webb and W. P. Blake. Differing greatly in size and the development of the aperture, all agree in the peculiar slope of the outer volution, giving them a coni- cal or dome-shaped form when lying on the left side. Fully developed specimens are much like P. corpulentus, Say, but the shape of the volutions and aperture differ widely. 217 PLANORBIS GRACILENTUS. T. discoidea, compressa, albida, con- cinné striata ; latere dextro planulato ; latere sinistro modicé concavo; utrinque anfr. 4 rotundatis, externo ad peripheriam obtuse angulato : apertura perobliqua, rotundato-ovalis. Axis 4; diam. } poll. The Great Colorado Desert, low lands. Dr. T. H. Webb. No North American species, of equal size, can be compared with this well-marked, wheel-shaped species. Very small specimens are like very large ones of P. deflectus, Say. [The figure of P. Halde- manni Dunker, (1841,) looks much like it.] OS= Vol. v. 129, (March, 1855.) AMNICOLA PROTEA. T. elongata, gracilis, variabilis; anfr. 7-8 rotundatis, profundé discretis, simplicibus vel liris volventibus et costis longitudinalibus varie ornatis et clathratis: apertura ovata; labro continuo, simplici, anfractum penultimum vix attigente. Long. (ex- empli maximi) 0.3; lat. 0.1 poll. Colorado Desert (Gran Jornada). Dr. T. H. Webb; W. P. Blake. « Peculiar from its large size and slender form, though differing greatly in relative proportions. It differs from all others, in being variously sculptured with revolving ridges and longitudinal folds, like most Melanie. [Mr. Conrad has described it under the name of Melania exigua (read February, 12, 1853), ]. AMNICOLA LONGINQUA. T. parva, elongato-ovata, glabra; apice obtuso; anfr. 5 rotundatis ; sutura profunda: apertura elliptica, postice rotundata ; columella valde arcuaté sub-perforata. Long. 4; lat.;5 poll. Found in the Colorado Desert (Cienaga Grande), by W. P. Blake. Much like A. Cincinnatiensis, Hald. in form; or like A. galbana or miniature specimens of Palud. ponderosa, Say. It has a bleached or chalky color, probably from exposure. The region is immersed a portion of the time, and dry the remainder ; and was once, apparently, an extensive marsh, or shallow lake. OS= Vol. v. 228, (Oct. 1855.) Unto BRACTEATUS. T. transversa, oblongo-ovata, solidula, sub- ventricosa, tenuiter striata, flavo-viridis viridi saturatiori radiata, antic? rotundata, postice subacuta; umbonibus ad trientem anterio- rem sitis, elevatis, utroque angulatis; marginibus dorsalibus et ven- tralibus lente arcuatis; dentibus cardinalibus perobliquis, compressis, duplicibus ; dentibus lateralibus arcuatis; margarita argentea aureo bracteata ; limbo iridescente. Long. 24; lat. 1; alt. 12 poll. From Llanos River, Upper Texas. Dr. 7’. H. Webb. In size, shape, and color, like U. Ogeecheensis, but the nacre and position of the beaks are different. U. Hydianus is more inflated, 28 more inequilateral, nacre pearly white. U. Menkeanus is more com- pressed, tip more acute, tooth in left valve deep cleft. Unio petrinus. ‘T. solida, ovato-quadrata, subequilateralis, an- tice acute rotundata, postice late truncata, subtus vix arcuata, prope marginem dorsalem posticum plicis obliquis minimis ornata; umboni- bus modicis, subplanulatis; epidermide dilute flavo-viridi; dentibus cardinalibus robustis, pyramidatis, lateralibus curtis; margarita alba. Long. 1}; alt. 14; lat. # poll. Llanos River, Texas. Dr. T. H. Webb. May be compared to U. Lamarckianus, Lea, (=U. Aberti, Conr.) Tt is less compressed, apices less acute, and less angular ; the posterior altitude is greater, the posterior dorsal margin being less declivous, but as the posterior truncation is less decided, the length is greater compared with the height; the surface is irregular, but destitute of granules or nodules. Unio mANuBIus. ‘T. transversa, elongata, subarcuata, subven- tricosa, anticé angustata, postice acuta, margine dorsali arcuato in marginem posticum desinente ; disco rudi, epidermide nitido-corneo induto; dentibus cardinalibus compressis, triangularibus, ad margi- nem fere parallelis ; d. lateralibus remotis, arcuatis ; margarita argen- tata, taleosé. Long. 33; alt. 12; lat. 14 poll. Chihuahua, sixty miles from Camp Ringgold. By Dr. T. H. Webb. Allied to U. declivis, Say = geometricus, Lea, in which the posterior extremity is recurved and angular, rather than decurved with round- ed angles; and the surface is dead and dusky. In our shell, the anterior extremity is more prolonged, and much more slender. It is also intermediate between U. obesus, Lea, and U. camptodon, Say. ANODON HoRDA. T. tenuis, transversa, elongato-ovata, ventri- cosa, diluté cornea, viridi nubeculata, antice angustata, subacuta, postice subtruncata, dorso excavato, declivitate umbonali obtuse angulato, submarginato, umbonibus obtusissimis, pallidis, tenuiter undulatis, ad trientem anteriorem sitis; margarita argentea. Long. 31; lat. 14; alt. 18 poll. Comanche Creek, Texas. Dr. T. H. Webb. Remarkable for the broad, inflated, pale beaks, presenting no dis- tinct apex. In size and form, it might, at first sight, be taken for U- anodontoides. It approaches to A. ferruginea and A. Dunlapiana, but differs in its proportions. Cycias Nopitis. T. magna, solida, ovato-rhomboidea, utrinque truncata sed posticé obliquius; umbonibus anticis, tumidis; margine dorsali utrinque arcuatim declivibus; margine ventrali arcuato; val- vis remot? et profundé suleatis; epidermide flavescente ; dentibus cardinalibus minimis; intus pallida. Long. 4; lat. 4; alt. 3 poll. Found near San Pedro, California. Dr. Webb. 219 Has a general resemblance to what is usually regarded as C. similis, but is more solid, more imequilateral, more obliquely truncated pos- teriorly, beaks more conspicuous, color paler, grooves coarser, cardi- nal teeth less developed. C’. solidula, Prime, must also nearly corre- spond in its characters. OS= Vol. vi. 11, (October, 1856.) Hetrx [Corilla] repercussa. T. sinistrorsa, discoidea, supra planulata, infra concava, plicato-striata et lineis volventibus superné insculpta, castanea ; anfrac. utroque 6-1, ultimo vix angulato, prope aperturam deflecto: apertura despiciens, oblique lunata, peritre- mate reflexo, postice callo angulato juncto; lamellis palatinis duabus intrd volventibus, quarum un4& ad angulum inconspicua. Diam. 1; alt. =3, poll. From Tavoy and Mergui. Rev. J. Benjamin. Compared with H. anguina [achatina], it is less distorted, more elevated, concave beneath only, whorls more numerous and more closely coiled, obtuse at periphery, not marbled in coloring. [Belongs to the first section of the genus Plectopylis Benson. ] HELIX RAMENTOSA. T. suborbicularis, depressa, tenuis, perforata, fulva fascia fused albo marginataé ad peripheriam cincta, lineis incre- mentalibus et sulcis decussantibus pariter obliquis granulata ; anfr. 54 convexiusculis, ultimo obtuse angulato; sutura valdé impressa: apertura oblique oblongo-ovata; peritremate posticé acuto, sensim versus umbilicum reflexo, albo; fauce rufescente. Axis half an inch; diameter 4 inch. California; from the cabinet of Dr. W. Newcomb. Agrees well with H. zonata, Pfr., in which the umbilicus is larger, and no allusion is made to the rasp-like surface. HELIX DAMASCENUS [is H. pandore, Forbes (1850)]. Buiius Ltepipus. TT. parva, plerumque sinistrorsa, vix per- forata, ovato-conica, elevata, polita, citrina; anfr. 6 convexis, ultimo ventricoso; sutura bene impress’: apertura subcireularis; peristo- mate albo, reflexo, ad columellam dilatato, extremitatibus approxi- matis. Axis, 7; diam. 4 poll. Mergui Islands. Rev. J. Benjamin. A pretty shell, grouping with lavus, Adamsit, and moniliferus, but smaller, proportionally shorter and more ventricose, and differing entirely in coloring, texture, and the broadly rounded form of the aperture. Butimus Lautus. TT. subperforata, obliqué ovato-triangularis, tenuis, eburnea longitudinaliter rufo-lineata; suturis pallidis; anfr. 6, ultimo ad peripheriam in carinam compresso, subtus versus umbili- eum declivi et plicato: apertura obliqué triangularis, ad angulum laterali-basalem canaliculata; peritremate expanso, intus incrassato, albo, rosaceo vivide submarginata. Length, one inch; breadth, half an inch. From the mountains of Equador, near Quito; by Joseph P. Couthouy, Esq. 220 A most remarkable and beautiful shell, belonging to the peculiar group of Bulimi, with angulated apertures, found on the Andes, near Chimborazo. The basal angle stands off further from the axis in this than in any other species yet figured. B. semiclausus is banded, the basal angle rounded, the spire less acute. B. Knorri is more elongated, and the basal angle nearly axial. B. murrinus and B. fabrefactus are also allied. STREPTAXIS PROSTRATA. T. pupoidea, valde distorta, tenuis, dilute cornea; anfr. 6, posticis lateraliter appositis, ad peripheriam acute angulatis, antico subtus glabrato: apertura longior quam lata, lamina palatali instructa; peristomate reflexo; umbilico crescentico, satis magno. Long. 2 poll.; lat. 4 poll. Found by Dr. G. A. Perkins, at Cape Palmas, and at Rockbookay, twenty miles in the interior, under dead leaves. He says, “ the ani- mal is beautiful red, yellow, and orange.” It is of the size of S. aber- rans, but is more eccentric and more compressed. STREPTAXIS ELISA. T. modica, valde distorta et compressa, supra tenuiter striata, infra glabrata et late perforata; spira dis- coidea; anfr. 7 + juxta suturam profundam angulatis, ultimo later- aliter valde protenso: apertura transversa, subquadrata, peritremate everso, intus denticulis quatuor cruciatim dispositis armato, quinto minimo interdum postice addito. Length, half an inch; height, one quarter inch. From an island in the Mergui Archipelago; Rev. J. Benjamin. In size and form most like S. Souleyetana, but is even larger and more depressed ; aperture much as in S. pyriformis, but more elon- gated, and the posterior denticle is very small and marginal; the shell is double in size. STREPTAXIS ExAcUTUS. ‘T. grandis, omnino dislocata, late um- bilicata, pallide cornea, supra acuté lirata, infra polita: spira discoidea lateralis; anfr. 6 + penultimo postice valde protruso, exacuto, api- calibus convexiusculis, bene discretis: apertura subquacrata ; peris- tomate albo, reflexo, posticé angustato et sinuato; palato lamina subcentrali et alteré inconspicuaé ad angulum munito. Length, 4; breadth, ;3, poll. Found by Rev. Ff’. Mason, m Burmah. More solid and compressed than S. elisa, with no denticles on the peritreme, and with the edge of the penult whorl, forming the pos- terior end of the shell, very sharp. CLAUSILIA VESPA. ‘T. solida, sinistrorsa, vespeformis, deflecta, levis, intense rufa; anfr. 6, anteriori raptim attenuato, proximo corpulento, apicalibus cito decrescentibus ; sutura impressa, Vix mar- ginata : apertura ovata ; columella biplicata; peritremate late reflexo, rufo. Long. 1; ;%; poll. Inhabits Tavoy. Rev. Francis Mason. 221 This very singular, wasp-like shell is allied to C. insignis, Philippii, Cochinchinensis, &c., but distinguished from all by its peculiar form. CycLostoMA POLLEX. T. polliciformis, distorta, subumbilicata, rufescens ; anfr. 6, ultimo ventraliter planulato, dorsaliter gibboso ; anfract. posticis nonconformibus, rotundatis, dextrorsum nutantibus : sutura profunda, marginata: apertura circularis, postice truncata ; peritremate duplici, modicé reflexo. Long. 1}; lat. 8 poll. Tavoy, British Burmah. Lev. Francis Mason. This singular shell may possibly be Cyclostoma chrysalis, Pfr., but is larger, destitute of lines and indentations. That shell is said to come from Arva, (probably Ava.) Megalomastoma Myersii, Haines, is another species of the same type, but less distorted and more cylin- drical. These shells, coming from the same region, to which many others will doubtless hereafter be added, I regard as constituting a natural group, probably generic, for which I would propose the name Pou.t- cARIA. Shell subperforate, chrysalidiform, ventrally flattened, spire leaning ; aperture subcircular, truncate posteriorly within the peri- treme. CycLosTtoMa CUCULLATA. T. umbilicata, depresso-conica, soli- dula, lineis incrementi et lineis volventibus tenuibus superné insculpta, straminea ferrugineo tessellatim marmorata, et infra lineata, apice nigro; anfr. 5 rotundatis; sutura profunda: apertura (genuina) elliptica; peritremate reflexo, et cucullo lato unicolori oblique truncato valdé protracto; fauce flava. Diameter, exclusive of false lip, ;%; in. ; projection hood-lip, + inch ; axis, 8 inch. From an island in the Mergui Archipelago; Rev. Judson Benjamin. With the exception of the aperture, the shell is much like small specimens of C. linguiferum, or still more like C. irroratum, Sowb. Its remarkable hood is sufficiently characteristic. Mirra [Scaphella] rrormpa. T. ovato-fusiformis, solidula, albida ferrugineo nubeculata et lineis numerosis fuscis interruptis interdum albo articulatis cincta, quoad rostrum plicata et obliqué lirata; an- fractibus 7 + ultimo spiram ter excedente, antice angustato: aper- tura angusta, postice acuta; labro acuto: columella sexplicata, plica postrema proximam bis superante ; intus alba. Axis, 133; greatest diam. 3; length of aperture, 14 inch. Received from Dr. Edmund Ravenel, of Charleston, as from Florida. Another specimen, in the possession of Dr. Jay, was supposed to have come from the Philippine Islands. Its characters are intermediate between Mitra and Voluta. It most resembles in form and coloring a small Vol. antiquata, but the markings are much more crowded and delicate. bo 22 Unto Leprpus. TT. transversa, elongato-ovata, tenuis, ventricosa, valdé inequilateralis; umbonibus tumidis, leviter undulatis, diluté viridibus ; disco olivaceo, vix radiato; latere antico rotundato, superné angulato; latere postico ovato, marginibus arcuatis ; dentibus cardi- nalibus erectis, lamellatis, fimbriatis; dentibus lateralibus, rectis, acutis; margarita argentata, postice iridescente ; cicatricibus anticis sejunctis. Long. 22; lat. 1; alt. 14 poll. From a creek near Lake Munroe, Florida; Dr. Henry Bryant. Very closely allied to U. trossulus, Lea, but is larger, more fragile, and the cardinal teeth are more compressed. Unto coruscus. T. parva, solida, transverse ovata, ad dorsum lata, deorsum cuneata; umbonibus anticis valdé erosis; latere antico rotundato; latere postico acuminato; margine dorsali valdé declivi; margine ventrali lenté arcuato; epidermide piceo, nitente ; dentibus cardinalibus obliquis, validis; dentibus lateralibus. curtis, rectis; cicatricibus anticis sejunctis; margarita vivid? cupreo-purpurea. Long. 12; alt. 45 lat. 2 poll. River St. John’s, near Lake Beresford, Florida; Dr. Henry Bryant. Of the same type as U. Buckleyi, and might be thought the young ; but it is more solid, less angular, is much darker colored, has a much more brilliant nacre and a stronger hinge; trossulus is less cuneate and has a white nacre, as has also U. Brumbyanus. TEREDO THORACITES. T. magna, solida, subequilateralis, alba ; valvis trilobatis; area anteriori maxima, antice truncata, obtuse lan- ceolata, concentric? insculpta; area intermedia, uncinata, ad apicem obtusa, apophysi valido intus suffulta; area posteriori minima, lunata, superne emarginata, incrassatéi; tuberculis cardinalibus magnis, uncinatis; apophysi subumbonali compresso, geniculato; ossicula siphonali pulpito mediano instructa, altero latere subulato, altero ligulato. Length and height, 4 inch; breadth, 3 inch. Tavoy, British Burmah. Rev. F. Mason and Rev. J. Benjamin. In size and solidity this exceeds any species yet described. It is chiefly characterized by the great size of the anterior area when compared with the posterior; the stilt-like form and great length of the pallets is also quite peculiar. 223 MOLLUSCA OF THE UNITED STATES EXPLORING EXPEDITION UNDER CAPT. CHARLES WILKES. OS> Vol. xii. Mollusca and Shells. 4to. Boston, 1852. ARION FOLIOLATUS. A. corpore depresso, fulvo, sulcis nigricanti- bus obliqué reticulato areolis inclusis foliosis; clypeo prelongo, levi, fulvo, concentrice fusco-notato; aperturé communi antemediana ; tentaculis parvis, brevibus. Long. 34 poll. Discovery Harbor, Puget Sound. Dr. Pickering. Limax Conumsranus. L. corpulentus, corpore elongato, posticé carinato, sordide flavo, unicolore vel maculis atropurpureis nubecu- lato, tuberculis elongatis longitudinaliter dispositis tessellato ; clypeo lato, antice truncato; apertura communi posticé. Long. 5.5 poll. Nisqually, Mr. Dyes; Discovery Harbor, Puget Sound, Lieut. Case. Generally resembles L. empiricorum. It varies much in color, being sometimes entirely slate-color, and sometimes more or less mottled. Limax OLivaceus. L. elevatus, retrorsum carinatus, plus minusve acuminatus, ex olivaceo purpurascens; papillis angustis elongatis ob- liquis reticulatus; clypeo curto, rotundato, concentricé rugoso; fora- mine antico; fronte reticulato; tentaculis cervicalibus elongatis, attenuatis, nigricantibus. Long. 2 poll. Paramatta, N. S. Wales. Mr. Couthouy. Peculiar on account of its color and its very narrow, delicate, elongated papille. It is gradually attenuated both in height and breadth, terminating in a delicate point. Limax FuLieinosus. L. abbreviatus, corpulentus, acuté carina- tus, fuliginosus, sulcis remotis obliquis reticulatus, areolis reticulatis ; clypeo ovali, postice latiori, foramine pulmonali postico; capite parvo; tentaculis brevibus, ad apicem ferrugineis. Long. 2.5 poll. Bay of Islands, New Zealand, among turnips. Dr. Pickering. Characterized by its sooty color. Dr. P. has no doubt that it is a native species. SuccINEA [Omalonyx] EXPLANATA. T. parva, tenuis, scutelle- formis, rotundato-elliptica, pené evoluta, concentricé striata, luteo- cornea: spira marginalis, feré nulla, omnino aperta; columella arcuataé. Long. +4: lat. 1 poll. Island of Kauai. Couthouy. Mr. Couthouy did not notice the animal, but labelled the shell “ Testacella.” The form of spire does not accord with that genus, but it seems to be an extreme modification of a small group peculiar to the Sandwich Islands. NaAnINA FRICATA. T. rotata, tenuis, viridi-cornea, superné con- vexiuscula, liris crebris radiantibus interdum fureatis insculpta, in- 224 ferne glabrata, umbilico lato, profundo, infundibuliformi perforata : anfr. 44; sutura impressa: apertura rotundata; labro simplici. TIlla- warra, New South Wales. Drayton. Its lower face is like that of H. oliveiorwm, but the shell is more delicate, and the upper surface ridged with elevated lines, many of which bifurcate. [Pfeiffer doubts its being Nanina, on account of its umbilication. ] Hetxrx [Callicochlias] InraminaATA. ‘Tl’. depresso-globosa, imper- forata, tenuis, translucida, alba, epidermide tenuissima straminea induta: spira depressa; anfr. 4 convexiusculis, ultimo subangulato: apertura rotundata, ampla; columella planulata, acuta; labro everso. Diam. 1; axis 2 poll. From a tree, Island of Mangsi, Straits of Balabac. Allied to H. Valenciennesii and Broderipii, but on the whole Pfeiffer accords with me that it is not to be united with any other species. HeLrx sprrittus. T. parva, planorboidea, tenuis, diaphana, levis, virescens : spira depressa, anfr. 5 convexiusculis arcté volutatis, ad peripheriam rotundatis ; sutura impressa: apertura subcircularis ; labro albo, reflexiusculo; columella callo subdentato munité. Diam. 1; axis, ;5 poll. From the mountains beyond the valley of Aman- caes, near Lima, under stones. Couthouy. A miniature of H. concava, Say, having a peculiar protrusion of the lip, which is white and a little thickened. It may possibly be H. trochilionides, D’Orb. Herrx catcutosa. T. parvula, hyalina, fragilis, nitida, levigata, cornea, globoso-pyramidalis: spira depressa, anfr. 4 convexiusculis, ad peripheriam angulata et tenuissimé carinata; infra convexa, regione umbilicali impress’ sed imperforataé: apertura lunata ; labro simplici, margine interna rotundata. Diam. ;4,; axis, ;; poll. In- habits Tahiti. Couthouy. Like H. chersina Say, but has an angular periphery, though it is less angular than H. subtilissima. CrncuLa [Paludestrina] Perenincensis. T. minuta, sub-per- forata, elongato-conica, tenuis, levis, cinereo-viridis ; anfr. 6 convexis ; suturé profunda: apertura lunata, + longitud. testee adequans, antror- sum sub-producta; labiis postice interruptis. Long. $; diam. 5 poll. Found adhering to plants in brackish water, Lagoa de Peteninga, Rio Janeiro. Couthouy. Allied to C. minuta Say. It is different from any of the small species figured by D’Orbigny. Gen. PELEx [is gen. Latia Gray, 1849]. P. LATERALIS [is L. neritoides Gray, probably ]. 225 Nerita crassa. T. solidissima, subglobosa, longitrorsum striata, spiraliter sulcato-costata (costis ad 30 rotundatis) fusco-cinerea, flam- mulis crebris angulatis obliquis variegata : spira prominula, ad apicem lutea; anfr. 4 rotundatis; sutura impressa: apertura parva, semi- circularis ; labro crassissimo, anciso, crenulato, intus sulcato, posticé unidentato ; labio angusto, 8-plicato, plicis anticis bisectis ; columella bidentata, dente antico minimo. Diam. 1; axis, ? poll. This is probably the most solid of ali the Nerites. The variations in this genus are so numerous as to render specific distinctions doubt- ful. This is allied to NV. Guillouana and N. undulata. The lip, number of teeth, and sulci and form of ribs differ from the former ; the ele- vated spire, finer ribs, rugose column, and protruding lip characterize the latter. MareGarita MAGELLANICA. T. depresso-conica, solida, imper- forata, polita, rufa interdum sordide flavescens: anfr. 5-6 convexis, ultimo ad peripheriam sub-angulato: basis tumida: apertura ampla, subcircularis ; columella rotundata vix arcuataé angulum basalem cum labro efformante: faux vivide iridescens. {Axis, $; diam. 2 poll. Orange Harbor, Tierra del Fuego. Couthouy. It varies in being of a paler color, smooth surface, less angular periphery and by having vestiges of epidermis. Marearita Persica. T. parva, solida, depressa, ovato-conica, levigata, nitida, intense purpureo-incarnata: anfr. 5 convexiusculis, superne declivibus, ad suturam confluentibus: basis convexa, medio indentata, pallida; columella laté, excavata, arcuata: apertura cir- cularis: faux vivide iridescens. Diam. $; axis, ;°, poll. From among Cape Horn Shells. Remarkable for its excavated, crescentic pillar, much as in Lacuna; in this it differs chiefly from the last species. PurpuRA OSTRINA. T. solida, rudis, rotundato-ovata, patula, exalbida, purpurascens interdum fasciis geminatis rubidis cincta: spira brevis, conica ; anfr. 4—5 obtuse angulatis, convexis, ultimo am- plissimo, ventricoso: apertura rotundata-ovalis, livido-tincta; labro simplici patente ; columella explanato-planulata; sinu siphonali an- gusto, minime profundo, brevi. Long. 1; diam. 2 poll. Obtained at Killimook, Oregon. Allied to P. lapillus and Freycineti, distinguished by its smoothish surface, coloration, large and patulous aperture and flattened colu- mella. NassA LILACINA. T. ovato-conica, levigata, lilacina ; spira acuta, anfr. 7-8 convexis, ad suturam crenulatis, supernis plicatis et striis volventibus cinctis, ultimo dimidiam longitudinis teste adequante ; basi spiraliter striata : apertura lunata; labro simplici; sinu siphonali 29 226 amplo, brevi. Long. 2; lat. 4 poll. Found on a coral ledge, Cler- mont Tonnerre, Paumotu Islands. Very much like WN. lurida. Lotria onycuina. ‘T. deformis, tenuis, depressa, rotundato- ovata, costis obsoletis radiantibus ad 20, et gradibus incrementi con- fertis laxis notata; apice subcentrali, eroso: extus cinerea, inter- spatiis costarum plerumque fusco-olivaceis: intus lutea castaneo variegata; margine acuto, irregulari. Long. 4; lat. 4; alt. 4 poll. Probably from the coast of Peru, though marked Rio Janeiro. They resemble depressed specimens of L. scabra. Rimvta [Puncturella] cocnata. T. conica, alba, radiatim costu- lata; apice incurvato: apertura rotundato-ovalis. Dredged in 16 fathoms water, Orange Harbor. Couthouy. Similar to R. conica, D’Orb., but less elevated, and the ribs more regular. CAPULUS SAGITTIFER. TT. parva, tenuis, lucida, candida, semi- globosa, apice mediano, dextrorsum inclinato, acuto: extus lineis lacteis radiantibus, papillas sagittatas gerentibus insculpta: apertura sub-circularis: cavositas profunda; cicatricibus bené impressis et septo filiformi junctis. Diam. 4; alt. 4, poll. Habitat uncertain. Well distinguished by its radiating lines, made up of chains of arrow-heads. PERONIA IRRORATA. Corpus elongato-ovale, convexum, flavo et olivaceo nubeculatum, granulis confertis instructum, marginibus dilatatis, plicis radiantibus ad decem quasi denticulatis: caput pro- tractum, lateraliter dilatatum, cceruleum ; tentaculis curtis, gracilibus, capitatis, cceruleis: solea trientem latitudinis corporis adequans. Long. 1; lat. 3; alt. 4 poll. In tide-pools, Bay of Islands, New Zea- land. Drayton. May be compared with P. patelloidea, but differing in color, form, marginal projections, &e. [Genus Onchidella; also two next species. | PreRONIA ACINOSA. Corpus elongatum, sub-cylindraceum, postice angustatum, ad extremitates rotundatum, papillis beryllinis ornatum : solea dimidiam longitudinis corporis adequans, fusco-violacea ; tenta- cule cyanexe. Long. 14; lat. 3 poll. Inhabits Feejee Islands. Remarkable for its mulberry-like surface and amethystine color. PERONIA CORPULENTA. Corpus linguiforme, convexum, supra cyaneum, infra olivaceum, tuberculis magnis elevatis rotundatis (minoribus circumjacentibus) instructum ; veli marginibus undulatis ; cucullo cordato ; tentaculis elongatis, linearibus, viridibus: solea pal- lida 2 longitudinis corporis adequans. Long. 23; lat: 1; alt. 4 poll. Found at Direction Island, one of the Feejees. 227 APLYSIA PULMONICA. A corpore oblongo, posticé sacciformi, fusco-viridi venis fuscis reticulato: apertura siphonalis parva; caput obtusum, vix bilobatum ; tentaculis anticis curtis, auriformibus ; ten- taculis cervicalibus conicis, acutis, obscure annulatis. Long. 6 ; alt. 2 poll. Obtained at Tutuilla, Samoa Islands. Couthouy. Generally resembles A. tongana, Quoy and Gaim., but their figure shows the posterior ruffled dise of the sub-genus Dolabella. Genus StyLocueErLus. Corpus limaciforme, lanceolatum, retror- sum attenuatum, cirrhigerum; caput liberum, tentaculis 4 elongatis linearibus plus minusve papillosis instructum ; os inferior ; labro later- aliter in processum subulatum palpiformem dilatato. The papillz are capable of being individually elongated and con- tracted, as in Cypreza. S. LINEOLATUS. Corpus viride lineis ferrugineis longitudinalibus parallelis contortis, et ocellis inequalibus remotis ornatum ; papillis remotis, ramosis; tentaculis anterioribus subulatis, nudis. Long. 34 poll. Found on a reef at Honolulu, Oahu. Pickering. Allied to Aplysia striata, Quoy, in its lineation. S. QUERCINUS. Corpus elongatum, attenuatum, e fusco ferrugi- neum, longitrorsum rufo-lineatum, papillis elongatis ramosis instruc- tum: tentacule prelongz lineares, truncate, papillis acutis armate. Long. 34 poll. Dredged at Lebuka, Feejee Islands. The peculiar graining is something like that of oak wood. Doris VERMICELLI. D. oblongo-ovalis, tumida, verrucosa, ochra- cea maculis ferrugineis variegata, infra incolorata: caput parvum; tentaculis labialibus tenuibus elongatis; tentacule cervicales brevi, compresse omnino laminate: stella branchialis plumulis numerosis gracilibus crenulatis triserialibus instructa: pes latitudinem corporis sub-equans. Long. 24 poll. Rocks washed by the surf at Villamar, near Valparaisa. Doris sMARAGDINA. D. parva, elongato-ovalis, antrorsum an- gustata, smaragdina, indico marginata et punctis occellatis numerosis ceruleis picta; tentaculis et branchiis flavidis: tentacule labiales curte ; t. cervicales elongate, lamellis profundis: stella branchialis magna; plumulis 12 lanceolatis pinnatis, pinne quindecim. Long. 13; lat. $ poll. Vincennes Island, Paumotu Group. Couthouy. Doris PeTECHIALIS. D. rotundato-ovalis, depressa, argillacea aurantiaco marginata et petechiis rosaceis ornata, subtus incolorata aurantiaco limbata; tentacule cervicales chermesine, acuminate: stella branchialis plumulis rosaceis angustis lanceolatis pinnatis sex : pes angustus corpore brevior: caput minimum; tentaculis labialibus curtis, conicis. Long. 24; lat. 14 poll. Obtained at Honolulu, Oahu. 228 Doris tinactna. D. magna, elongata, lateribus antice dilatatis retrorsum angustata, lilacina maculis saturatioribus notata, granulata: caput parvum: tentacule cervicales clavate, reflexe: stella bran- chialis magna ; plumulis 6, trifoliatis, foliolis profunde sinuatis. Long 31; lat. 14 poll. Honolulu, Sandwich Islands. Remarkable for the angular dilatations at the neck like a trilobite, and the plumules like the leaves of Acanthus. [Actinodoris ?] Doris CEREBRALIS. D. grandis, elongata, ovoidea, retrorsum angustata, dorsuosa, ex olivaceo flavescens: tentacule cervicales re- curve, apicibus laminatis conicis; t. labiales subulate citrine : stella branchialis magna, plumulis 6, foliatis, bipinnatifidis, acanthiformibus : tubus analis curtus, pinnis ornatus: solea angusta, brevis: pallium flavo-marginatum, rufo-purpureo nubeculatum. Long. 5; lat. 33 poll. From a reef in Sandalwood Bay, Feejee Islands. Doris AuRITA. D. elongata, depressa, anticé truncata, sanguinea, pustulis raris instructa ; tentaculis et branchiis sulphureis: tentacule cervicales brevi recurve, ad apicem oblique laminate : stella bran- chialis magna, foliis 8 involutis plumosis albidis : tubus analis simplex, curtus: regio anterior fimbriis lateralibus auribus simulantibus, et are’. inferiori (an ore ?) sulphureo marginatis insignis: solea angus- tata, lateritia, margine flavo. Long. 84; lat. 14 poll. From a reef, Sandalwood Bay, Feejee Islands. Generally resembles D. aurea Quoy, which has but five branchial plumes. It is probable that appendages are protruded from within the ear-like fringes answering to the labial tentacles. Doris sPIRACULATA. D. oblonga, antrorsum angustata, fulva, punctis aurantiacis et purpureis maculis albidis dorsalibus duabus, et maculis purpureis elongatis lateralibus utrinque 4 ornata: tentacule cervicales conice, recurve, rufie: stella branchialis remota, basi cupuliformi, plumulis 7-lobatis (lobis plumosis ad 12) ad labium sitis. Infra straminea, maculis rufis longitrorsum picta; caput transversum. Long. 33; lat. 14; alt. 3 poll. From Direction Island, one of the Feejees. In many respects resembling D. cruenta Quoy, but the spots are rauch smaller and more numerous, and the cup from whence the plumules arise is peculiar. Doris supERBA. D. magna, rotundato-ovalis, fimbria latissima nisi ad frontem cincta, intense sanguinea, iridescens, punctis flavis ocellatis hic illic glomeratis irrorata: caput parvum, rotundum ; ten- taculis labialibus ovalibus palmatis, 7-lobatis; tentaculis cervicalibus curtis, recurvis, acutis; stella branchialis magna, plumulis lilacinis 12 (paribus 6) racemiferis, racemis 5-foliatis 5-lobatis. Long. 54; lat. 4 poll. Fangasai Bay, Tutuilla, Samoa Island. 229 Of the size and color of D. Sandwichensis Souleyet, which is less red, the ruffle not deficient in front, back mottled, branchial plumes eight. Agrees with D. flammulata Quoy, except in the labial tentacles and plumes. Doris carpinalis. D. grandis, rotundato-ovalis, sub-lobata, fimbria lata cerasina antice angustaté cincta, sanguineo et flavido maculata, et lituris purpureis notata; tentacule cervicales rubree recurve, clavo conico coronate : stella branchialis magna, complexa, plumulis 6 dendriticis, 3-ramosis ; ramusculis numerosis rosaceis : pes elongatus, papaveraceus: caput parvum, rotundum, rosaceum; tenta- culis labialibus explanatis latis, cordatis. Long. 6 lat. 4} poll. Hono- lulu, Oahu. Much like D. Sandwichensis above, but the branchie and cervical lobes are different. It is intermediate between D. swmptuosa and D. superba. Doris sumpTuosa. D. pregrandis, rotundato-ovata, transversim 3-constricta, ex cerasino purpurascens flavo-punctata, fimbria lata violacescente flavo marginata et cerasino submarginaté cincta: caput parvum rotundum: tentacule labiales explanatz laciniate ; laciniis ad 12 crenulatis: tentacule cervicales clavate, reflexee, rosacez: stella branchialis magna, plumulis numerosis 3-foliatis biseriatis, foliis ser- ratis, pedunculatis: pes angustus, dilute rosaceus. Long. 104; lat. 8% poll. Obtained at Tonga Islands. Much the largest species yet made known, and well distinguished by its labial appendages, violaceous ruffle, and its profusion of ex- panded plumules. In size, general form, and color, it is like D. mar- ginata Quoy. [This species, with D. superba and D. cardinalis belongs to the genus Heprasrancuus Ehrenberg. ] Doris asrersA. D. parva, elongato-ovata, retrorsum angustata, depressa, margaritacea ad limbum flavescens, confertim puniceo- punctata: stella branchialis parva; plumulis 8 lanceolatis, pinnatis, rubiginosis ; pinnis ad 13, ciliatis. Long. 14; lat. 4 poll. Vincennes Island, Paumotu Group. Doris [Goniodoris] porsAuis. D. parva, gracilis, elliptica, re- trorsum angustata, dilute lilacina linea marginali et submarginali saturatiori, et lineis dorsalibus duabus parallelis sanguineis ornata : tentacule labiales parve ; t. cervicales clavate, cinerez aurantio et indico cinctz: stella branchialis parva, plumulis 6 attenuatis ad 17- foliatis, foliorum paribus tribus superioribus colore indico tinctis, ceteris flavidis. Long. 3; lat. 1; alt. 4, poll. On shells of Perna, in the harbor of Talao, Eimeo. Couthouy. By two bright-red lines along the back, and the indigo-barred ten- 230 tacles and plumes, this species is easily identified. It is allied to D. rayce Souleyet, and D. lemniscata Quoy. PLACOBRANCHUS IANTHOBAPTUS. Corpus oblongum, triquetrum, postice abruptum, ex flavido olivaceum, ocellis majoribus cceruleis albo-pupillatis et ocellis minoribus albis aurantiaco-pupillatis ornatum, cauda et labiis ianthino tinctis: caput latum; tentaculis ochraceis violaceo-annulatis: pes pallio haud disjunctus, smaragdinus, ocellatus ; plicis branchialibus smaragdinis. Long. 24; lat. 3 poll. Coral reef at Honolulu, Oahu. Like P. ocellatus, but too different to be considered a mere variety. DipHYLLIDIA RUBIDA. Corpus lanceolatum, postice acuminatum, erubescens, dorso concinné plicato ; pallium anguste reflexum ; caput cucullatum. Long. 14 poll. From a coral reef, Honolulu, Oahu. EtysiA LOBATA. Corpus limaciforme, gracile, dilatatum, triloba- tum, virescens nigro-punctatum; pallium utrinque flavo-marginatum ; tentacule elongate. Long. 1 poll. Creeping on coral stems, like a Doris, at Honolulu. Dr. Pickering. Genus CH1oR#RA. Corpus limaciforme; caput enorme, peduncu- latum, semiglobosum; pagina ventrali discoideé: ore longitudinal, seriebus binis cirrhorum cincto: tentacule cephalice foliate, retracti- les ; lobi branchiales flabelliformi, serie unicé utrinque ordinati: fora- men generativum ab anali remotum, fere dorsali. Accords with the family Tritoniadee except in the curious oral apparatus. CHIOR#RA LEONINA. Corpus albidum aurantiaco subtiliter reticu- latum; lobi branchiales incolorati, aurantiaco venosi: solea incarnata, Long. 5; lat. 14; alt. 1; diam. capitis, 13 poll. Dredged at Port Discovery, Puget Sound. Mr. Dyer. Curton [Leptochiton] intERsTrNcTUS. T. parva, rotundato- ovalis, vix carinata, rubricata, ubique quincuncialiter punctata; valvis ad apicem acutis, linea elevat& luteo-maculata divisis, areis lateralibus et valvis terminalibus juxta marginem plicatis: margo coriaceus, granuloso-squamosus. Long. $; lat. ;°; poll. Hab. Puget Sound, Oregon. About the size and color of C. castaneus, and with the size and many of the characters of C. Sitchensis Middend. Cuiron [Chetopleura] VESPERTINUS. T. parva, sub-ovata, cari- nata, thalassina intus rosacea, punctis triangularibus insculpta; areis linea elevata divisis; valva antica lineis radiantibus octo notata ; valva postica parva, ad apicem emarginata, prope marginem umbo- nata; margine coriaceo, pilis raris induto. Long. 14; lat. 3 poll. Inhabits Puget Sound, Oregon. Allied to C. ciliatus, Sowb., in the form of the posterior valve, size, 231 color, and sculpture, excepting that we here have punctures instead of granules. It is closely allied to if not a variety of C. lignosus. CrantA [Discina] RapIosA. T. suborbicularis, inequivalvis, cras- siuscula, citrina, costulis radiantibus divaricantibus, et striis concen- tricis cancellata; valva superiori convexa, apice acuto, post-mediano ; valvé inferiori planulaté, concentrice laminosi et interdum versus peripheriam radiatim costulata, fissura minima perforata: intus crista acuta in valva inferiori apophysin furcatum gerente, bipartita; cica- tricibus incrassatis ; marginibus ciliatis. Diam. 1; lat. 1 poll. One specimen found at Rio Janeiro, which seems to be identical with specimens from Cape Palmas, and from which the description is mainly drawn. ARGONAUTA GENICULATA. Corpus ovatum, supra gibbosum; caput breve, angustum: oculi magni, prominentes, pupillo nigro, iride aurato: sipho conicus, elongatus: os magnum; rostris fortibus : brachia basi adnata, superioribus cylindraceis, geniculatis, vexillum semiellipticum, flocculosum gerentibus ; brachiis secundis longissimis : color virescenti-argentata, punctis chocolatis oculatis variegata. Whole length, 6 inches; breadth, 13 in.; length of sac 24 in.; length of superior arms, 5 in.; inferior, 44 in.; superior lateral, 6 in.; in- ferior, 4; diam. of umbrella, 14 inches. Taken near the Sugarloaf, Rio Janeiro. Couthouy. Resembles most nearly A. argo. The joint-like flexure of the arms is different from that of any described species. OcTrorUS MEGALOCYATHUS. Corpus ovatum, leve, chocolatum lineis cinereis marmoratum, membrana laterali angust& quasi natatoria munitum: caput angustum: oculi prominuli: siphon bulbosus, curtus : os magnum, rostris nigris: umbella amplissima: brachia longissima ; acetabulis confertis, maximis. Length of head to eyes, 2.7; of body, 7.5; of arms, 34; circumference of body, 11; of arms, 3; breadth of umbrella, 8: of largest cupule, 1.3 inches. Orange Harbor. Lieut. Alden. Remarkable for the size of its umbrella and cupules, and especially for the narrow membrane along the sides of the body, which has been noticed in no other species except O. membranaceus Quoy. It is closely allied to O. Fontainianus D’Orb.; O. tehuelea comes from the same region and has the same general characters. [Allied to Pinnoctopus D’Orb.] Ocrorus mimus. Corpus parvum, ovato-globosum: caput angus- tum: oculi parvi, exstantes; papillo nigro; iride aurato et miniato: apertura ad angulos maculis rufis flavo-cinctis oculos simulantibus signata: brachia robusta, corpore quater excedentia pro longitudine 3, 2,4, 1; acetabulis remotis, purpureo cinctis: umbella amplissima ; 232 os eccentros ; rostris nigris: sipho parvus, tenuis: tunica reticulata, musiva, coloribus ochraceis, maculis lunatis transversis fuscis ordina- tim picta. Length of body, 3.5; breadth, 2; length of dorsal arms, 14; upper lateral, 18; lower lateral, 20; ventral 15 inches; diam. of largest cupules 2 inch. Callao, Peru. : Its ‘peculiarities are its reticulated surface and narrow transverse chocolate clouds; its large umbel and broad membranes between the arms, and its apparent possession of two pairs of eyes. Octopus TETRICUS. Corpus magnum, oblongo-ovoideum, fissura longitudinali sub-bilobatum: caput subquadratum, vix corpore dis- junctum, rigidum: oculi parvi, occulti: apertura parva, crescentica: brachii robusti, abbreviati, pro longitudine 2, 3, 4, 1; acetabulis ad brachia lateralia majoribus: os minutum, rostris inclusis: umbella ampla: tunica plus minusve verrucosa, superciliis et dorsibus brachium superiorum cirrhigeris. Length of sac, 2.5; upper arm, 12; superior lateral, 16 ; inferior lateral, 16; inferior, 13; breadth of umbel 5; of arm, 2-3; diam. of largest cupules, $ inch. Found near Sydney, New South Wales. Most resembles O. vul- garis ; the size of the eyes, the arrangement of the cirrhi and other obvious marks distinguish them. O. rugosus Blainv. has a smoother surface, only a single cirrhus, and arms less developed. Octorus FuRVUs. Corpus pyriforme, leve; caput elongatum, deorsum dilatatum: oculi magni, cirrhis tribus superciliaribus ornati ; pupillo nigro; iride aurato: brachia longissima, gracilia, subequalia ; acetabulis magnis, approximatis: umbella parva: tunica ochracea interdum fuscescens vel cinerascens. Length of body, 6; of arms about 40 inches. From the Market, Rio Janeiro. Couthouy. Of a remarkably long and slender form and small umbel. It is more slender than O. tetracirrhus, but the number and position of the cirrhi are different. Its proportions are much as in QO. macropus, but the coloring is different. Octopus ORNATUS. Corpus globosum; caput dimidiam corporis latitudine adequans: oculi parvi haud prominentes; pupillo nigro ; iride argentato: apertura lata: os parvum, eccentricum: umbella parva: brachia gracilia, attenuata, quoad longitudinem 2, 4, 3, 1, superioribus robustis, alteris gradatim gracilioribus; acetabulis numerosissimis, confertissimis: tunica reticulato-papillosa, areolis pallidis ovalibus signata; supra aurantiaca, strigis longitudinalibus flavidis 5, et maculis alternantibus etiam intra-brachialibus variegata. Length along back, 23; breadth, 13; of neck, 1; of umbrella above mouth, 2; below, 1; laterally, 3; length of arms, upper pair, 20; upper lateral, 24; lower lateral, 20; lower, 21 inches. Obtained at Oahu and Maui, Sandwich Islands. 233 No described species approaches this except O. macropus Risso, in which there is a marked distinction in coloring, and in the propor- tional length of arms. Octorus pusitLus. Corpus parvum, subglobosum: caput aque longum ac latum: oculi magni, protrusi: apertura parva: brachia robusta, contorta, citd attenuata, pro longitudine 1, 2, 3, 4; acetabu- lis magnis, confertis; umbella ampla. Whole length about three inches. Obtained at Mangsi Island, China Sea. In spirits. This may be the young of some larger species like O. rugosus, but in its present state it differs essentially. Others may be able to settle the question. Octopus Mouiis. Corpus parvum, elongatum; oculi valde ex- stantes: sipho bulbosus, elongatus: brachia gracilia, basi haud ap- proximata, pro longitudine 4, 3, 2,1; cupulis remotis: tunica (vino conservata) ochracea rufo-punctata, ramusculis venosis ad dorsum brachiorum notata. Long. 3 poll. Obtained at Tutuilla, Samoa Islands. This also may be a young specimen. It is most like O. Indicus, but is more delicate in all its characters than any species I have seen. SEPIOTEUTHIS ARCTIPINNIS. Corpus elongatum, ovato-lanceola- tum, pinnis perangustis, arcuatis munitum: caput oblongum corpore angustius: brachia sessilia, curta, crassa, pro longitudine 2, 4, 3, 1: brachia tentacularia eque ac corpore longa, triente extremo dilatato- lanceolato, series 4 acetabulorum gerente ; os magnum, cupuliferum : tunica brunneo-purpurascens rufo-punctata, infra pallidior. OMMASTREPHES INSIGNIS. Corpus magnum, sub-cylindraceum, postice angulatum: pinna trientem longitudinis corporis superans, rhomboidalis, acutangularis, latior quam longa: sipho pyriformis, arcuatus: caput breve, latum, supra convexum, infra excavatum: oculi parvi: brachia sessilia, robusta, triquetria, subequalia, pro longitudine 2, 3, 4, 1, trientem proximum paris inferioris acetabulis privatum vel fimbriatum ; acetabulis parium lateralium majoribus : brachia tentacularia gracilia, vix ad extremitatem dilatata, ad trientes duos extremos acetabulis instructa: color (vino conservata) rufo- cinerea. Shell 8§ inches long and about 4 inch broad, the posterior two inches, dilated into a paddle-shaped blade. Length of body 10; of head 23; of fin 4; breadth of body 3; of head 24; of fin 6; length of longest sessile arm 64; of shortest 43 ; of tentacular arms 10 inches. Obtained at Feejee Islands. Dr. Holmes. The only species to which this bears any close relation is O. todarus 30 Rafin., from the Mediterranean, differing from it chiefly in the arrange- ment of the cupules. ONYCHOTEUTHIS RUTILUS. Corpus breve, antice latum deinde sensim angustatum, dorso carinatum; pinnis magnis 4 corporis super- antibus, longioribus quam latis: caput subquadratum, subtus excava- tum: oculi nigri, maximi; sipho brevis, cylindraceus: brachia sessilia triquetria, 4 corporis longitudinis adequantia, ordine longitudinis 4, 3, 2, 1, acetabulis pedicellatis sub-uniserialibus instructa: brachia tenta- cularia robusta, cylindrica, unguibus ad 10 pedunculatis munita : color supra metallicus, reflectionibus violaceis et auratis ornatus; infra sal- monacea ; capite coloribus violaceis, lilacinis, aurantiacis, flavis, ete. ornato. Whole length 83; of body 4; of head 3; of long arm 4; of fin 28 ; breadth of body 1}; of fin 38 inches. South Pacific, near Sydney, N. S. Wales. Somewhat allied to O. Banksii Fer., but its proportions and colors are different. ONYCHOTEUTHIS BREVIMANUS. Corpus cylindraceum, vix dila- tatum: pinna rhomboidalis, latior quam longa, 4 corporis superans : caput breve, subglobosum: oculi mediocres: brachia sessilia, curta, gracilia, infimis longioribus, supernis brevioribus: brachia tentacularia brevissima: color ex sanguineo violacescens. Length 6; of body 33 ; of head 2; of fin 12; breadth of body 2; of fin 24 inches. Obtained at sea, 120 miles west of Tutuila, Samoa Islands. De- scribed from a figure by Mr. Agate. The extraordinary brevity of the tentacular arms, scarcely longer than the shortest sessile ones, is quite enough to characterize the species. LIMACINA SCAPHOIDEA. T. pellucida, involuta, scaphoidea: spira lataralis, anfr. 8, ultimo amplo: apertura sub-circularis; labro arcuato. Diam. 54, poll. Taken in the equatorial Atlantic, and figured by Mr. J. D. Dana. Resembles somewhat L. inflata Gray. Limacriya [Agadina] cucuLtnara. T. pellucida, planorboidea, altero latere anfractus 5 ostendens, altero anfractum unicum umbili- catum: apertura obliqua, campanulata. Diam. 4 poll. Found near an ice-island, within twenty miles of the Antarctic Continent, lat. 66° S., long. 106° 20’ E. Described from a sketch by Mr. Agate. I propose to name the genus after him. Animal black, with ovate appendages, not intimately united at base. 235 HyaL#ZA INERMIS. ‘T. ovato-globosa, postice angustata, com- pressa et truncata, angulis posticis emarginatis, antice rotundata: apertura angusta, transversa, labro haud porrecto. Animal alis transversis angustis ad angulum posticum emarginatis instructum. Long. {; lat. 4: alt. 4 poll. From a figure by Mr. Dana; locality not mentioned. HyYAL@®A FEMORATA. TT. sub-cordata; angulis posticis productis, arcuatis et cornua subrecta, prelonga, retroversa gerentibus. Animal alis transversis trapezoidalibus munitum. Length of shell and animal, also of alar expansion, 14 inch. Obtained in the equatorial Atlantic. Described from a figure by Mr. Dana. It is remarkable for its long and corpulent appendages. CLEeoporA ExacuTa. TT. pellucida, triangularis, subtus concava, supra per-convexa, antice rotundata, postice valde acuminata, lateri- bus coneaviter arcuatis. Animal cervice longo et alis divergentibus oblongo-ovalibus instructum. Long. 4 poll.; lat. 2 longitudinis. Found by Mr. Dana, in lat. 44° N., long. 154° W., off the mouth of Columbia River. Resembles a West India species which has the sides more deeply concave, and the lateral angles prolonged into spines. CLeopora [Creseis] MUNDA. 'T. elongato conica, modicé recurva, subcompressa, ad apicem rosacea: apertura rotundato-elliptica. Ani- mal alis feré transversis late coadunatis, obliqué triangularibus, sub- arcuatis, instructum. Long. 4 poll. Found in the equatorial Atlantic, and figured by Mr. Dana. Possibly C. virgula Rang. Cieopora [Creseis] prAcipA. ‘T. elongato-conica, vix reflexa: apertura circularis. Animal alis oblongis obliquis, angustis, curtis, instructum. Long. } poll.; aperturee diam. 54, poll. Obtained in the equatorial Atlantic, and figured by Mr. Dana. More obtusely conical than any described species, and the alar “expansions are small. CLeoporA [Creseis] FALCATA. TT. elongato-conica, valde re- curva: apertura circularis. Animal alis flabellatis, obliquis, subar- cuatis, iridescentibus munitum. Long. § poll. Taken by Mr. Dana, between Oregon and the East Indies. The extraordinary curve of the shell, as well as the peculiar form of the wings, are the prominent characteristics. ATLANTA PRIMITIA. ‘'T. nautiloidea, rotundato-ovata, compressa, dextrorsum umbilicata, carina lata sensim angustata cincta: spira anfr. 3: apertura angusta, elliptica, angulis acutis; labro arcuato 236 color violacea. Obtained in the equatorial Atlantic and figured by Mr. Dana, with notes. Closely allied to A. Lesueuri, Voy. de la Bonite, pl. 20; f. 1-15. ATLANTA CUNICULA. T. fragilissima, pellucida, nautiloidea, sub- circularis, compressa, carina latissima cincta: apertura elliptica, acutangularis. Obtained by Mr. Dana, in lat. 28° N., long. 178° E., to the westward of the Sandwich Islands. The animal is very different from that belonging to the last species. ATLANTA VIOLACEA. TT. nautiloidea, vix compressa, violacea, valdé carinata: anfractus quatuor sensim crescentes: apertura ellip- tica, angulis rotundatis. Long. integ. 3; lat. #4 poll. Found im the stomach of a Bonito, lat. 3° S., long. 20° W. Figured by Mr. Drayion. ATLANTA TESSELLATA. ‘T. nautiloidea, compressa, carina angusta cincta: anfr. 4, maculis quadratis violaceis seriatim dispositis, ornati ; anfr. ultimo citd crescente: apertura angusta, ad angulum internum rotundata. Diam. max. 1; diam. transv. 51, poll. Found with the preceding. The remarkable series of quadrate spots is a very obvious distine- tive character. ; CYNTHIA AMPHORA. C. subglobosa, ochracea, tenuis, longitudi- naliter sulcis remotis seementata et omnimode subtiliter corrugata. Orificia approximata, magna, labiis eversis et incrassatis. Alt. 13; circumf. § poll. Found abreast Fort Santa Cruz, Rio Janeiro. PHALLUSIA VIOLACEA. ‘T. nigro-violacea, erecta, ovato-cylin- dracea, coriacea, levigata, nitida; orificia subequalia, parva, mamil- las subglobosas perforantia. Alt. 24; diam. 14 poll. Taken off the north point of the entrance to Rio Janeiro harbor. Couthouy. ASCIDIA MONSTRANS. A. subglobosa, sursum porrecta et versus aperturam buccalem sensim angustata: apertura excretoria parva, valde inferior; tunica tenuis, levis, ex olivaceo aurantiaco demum sanguinea: labiis simplicibus, ciliatis. Alt. ad 1 poll.; diam. circiter 2 longitudinis. From the entrance to the harbor of Rio Janeiro. Couthouy. Boitrenta coacta. 8B. ovata, rigida, lanata, longitudinaliter rugosa, ochraceo-olivacea, postice pedunculata: aperture subter- minales, remote, cruciate, inermes, intus rosacexz, mamillas obtrun- eantes. Long. 24; diam. circiter 14 poll. Dredged in 16 fathoms. Orange Harbor. Couthouy. al 237 Genus AMNICOLA, Gould & Haldeman (Inverteb. of Massachusetts, 1841.) Testa ovato-conica, cornea, tenuis: spira acuta, anfractibus paucis rotundatis: apertura parva, obliqua, rotundato-ovata; peristomate simplici, continuo: operculum corneum, pauci-spirale. Incole caput proboscidiforme sub-bifidum ; ore inferiore, vibracula setacea; oculis basalibus, externis; solea subovata, anticé truncata, angulis exten- silibus.. Allied to Paludinella, and distinguished from Paludina by its small size, elongated head, paucispiral operculum, &c. PROCEEDINGS OF THE BOSTON SOCIETY OF NATURAL HISTORY. 0S Vol. viii. 280, (February, 1862.) VERTIGO NACCA. TT. ovata, lucida, alabastrica, tenuissimé striata ; anfr. 4 +- ventricosis; apice obtuso; sutura profunda: apertura sub- circularis dente palatali (interdum bifido) dente columellari, dente basali denteque labiali armata; peritremate valde reflexo; umbilico rimato. Axis. j4,; diam. 4, poll. Hab. Hawaii. Dr. Newcomb. The denticles are similar to those in V. Gouldii and V. tantilla. The latter is smaller, has a rugose surface, and one more denticle. NASSA PLICATELLA. ‘T. parva, elongata, ovato-conica, acuminata, sublivida et fascia albida cincta, longitudinaliter confertim plicata et striis volventibus plicas haud secantibus cincta; anfr. 7 planulatis ; sutura bene impress et marginata: apertura angusta, elliptica, postice acuta: labro simplici: sinu obliquo, vix reflexo. Axis 15; diam. 17 millim. Hab. British Burmah. Mr. Benjamin. Resembling somewhat JV. -achatina, though very much smaller. CHRYSALLIDA CURTINA. T. minuta, ovato-turrita, albida; spire anfract. 6-7 convexis, seriebus granularum quatuor cancellatis, granulis antice sensim defuentibus, anfr. ultimo dimidiam longitudinis teste superante: apertura angusta, anticé producta; columella postice plica munita. Long. 5; lat. 2 millim. Inhabits S. Carolina. Jt has the aperture, and in general the sculpture of Chemnitzia, with the columellar fold of Odostomia. DUNKERIA SUTURALIS. T. minuta, eborea, turrita; anfract. 7-8 convexis, longitudinaliter 10-12 plicatis (plicis antice evanescentibus) et stris volventibus tenuibus cinctis quorum una subsuturali bené impressa ; anfract. ultimo dimidiam longitud. teste breviore: apertura lunata, trientem longitud. teste brevior. Long. 3+ ; lat. 1 millim. Hab. Fort Johnson, Charleston Harbor, S. C. This minute shell belongs to the Chemnitziz, with strongly marked sculpture, and with ventricose whorls. 238 RissoA INcoMpTA. T. minima, elongata, vitrea, lactea postice rubiginosa; anfr. 7 rotundatis, costis ad tres cinctis, longitudinaliter inordinatim clathratis et indentatis, posticis carinatis: apertura circu- laris, peritremate simplici, incrassato. Long. 2; lat.1 millim. Among coral sand, Florida; abundant. Risso (s. g. Setia) PATENS.’ T’.. minuta, ovata, tenuis, vinosa, levis; anfr. 5-6 ventricosis, linea subsuturali impressi ornatis: apertura rotundata postice emarginata; columella parum reflexi; labro sub- incrassato, fusco. Axis 3; diam. 2 millim. Hab. Fort Johnson, Charles- ton Harbor, 8. C. This minute Rissoid is remarkable for its large aperture and subsu- tural impressed line. MANGELIA (Astyris) LABECULA. ‘T. parva, ovato-fusiformis, cerina, maculé castanea intra et extra labium ornata, spiraliter tenuissimé striata, longitudinaliter ad 16-plicata, plicis ad anfractum ultimum sensim evanescentibus, striis simul crescentibus ; anfr. 7-8 convexius- culis, linea subsuturali impressis: apertura parva, ovalis; labro gibboso, extus incrassato, intus granulato; sinu haud notabili. Axis 7; diam. 3 millim. Dredged off the coast of Georgia. The brown blotch on the lip is a sufficient characteristic. BELA UNDATELLA. T. ovato-rhomboidea, lucida, lactea, nitida, vix spiraliter striata; apice mamillato; anfr. 4 tabulatis (angulo rotun- dato) linea subsuturali impressis, undulis opacis longitudinalibus ad 8 ornatis: apertura longitudine dimidiam teste adequans. Axis 3; diam. 1,5 millim. Dredged in 400 fathoms off the coast of Georgia. The transparency and mamillated tip of this minute shell render it plausible that it may be the young of some larger shell. MARGINELLA (s. g. Gibberula) LACHRIMULA. ‘T. minima, ovata, lactea, lucida, nitida, longitudinaliter exilissime striata; apice haud eminente, vitreo: apertura angusta, crescentica ; labro obtuso, extror- sum varicoso posticé late arcuato et apicem admodum superante, intus vix crenulato; columelia antic 4-plicaté. Axis 1,5; diam. 1 millim. Dredged in 400 fathoms off the coast of Georgia. This may be distinguished from one or two other minute species found in the W. Indies, by its transparency and its ventricose form. SEMELE NEXILIS. TT. oblongo-ovalis, compressa, haud nitida, alba versus umbones pallidé incarnata concentrice laminato-striata et sulcis radiantibus remotioribus concinné reticulata, ad intersectiones punc- tata, et versus extremitatibus muriculata ; umbonibus vix post medi- anis; plica haud profunda; dentibus lateralibus satis conspicuis aque ab umbone remotis; pagina interiori erubescente. Long. 25; alt. 15; lat. 7 millim. From the coast of Georgia. The sculpture is similar to that in the young of Lucina tigerina, but much more delicate. 239 SEMELE ORNATA. T. parva, elliptica, rubescens prope marginem rosaceo concentricé et radiatim tincta, concentrice costato-striata et radiatim striata presertim ad umbones et versus extremitates: plica satis conspicua: cavositas flavo et sanguineo tincta admodam radiata ; dentibus precipué validis. Inhabits the coast of Georgia. Similar in form and sculpture to the preceding, but different in coloration and hinge. ErviniA CoNCENTRICA. ‘TT. minuta, oblongo-ovata, pellucida, nitida, (senioribus, incrassatis, margaritaceis) confertim sed profecto concentricé arata; umbonibus paullo postmedianis ; extremitate antico acutiori quam extremitate postico. Long. 6+ ; alt. 4; lat. 3 millim. Dredged off the coast of North Carclina. Coast Survey. This little shell, which seems to be abundant along the whole South- ern coast, is quite different from anything before described. GOULDIA FASTIGIATA. T. parvula, oblique triangularis, solidula, flavida, concentricé arata preecipué versus umbones ; umbonibus acutio- ribus antrorsum versis; margine anteriori concava; margine dorsali arcuataé ; marg. ventrali subrecto; angulo ventrali antico fere recto ; ang. postico rotundato. Long. 8; alt. 8 millim. From Frying-pan Shoals, N. Car. Coast Survey. Another species of the genus established to receive the little Astar- toid shells, with more or less developed lateral teeth. Lucrina pusiLuA. T. minuta, reniformis, straminea, concentricé leviter striata; umbonibus postmedianis, eminentibus; margine dorsali anteriori excavato, extremitate rotundata, retusa; extrem. postica late rotundata, subtruncata; intus radiatim striata, radiis versus umbones evanescentibus. Long. 3; alt. 2, 5 millim. From the coast of North Carolina. Coast Survey. This very minute species has the form of the subgenus Codakia, but is destitute of the divaricate striation. It approaches the genus Lasea. Lepa unca. T. parvula, solidula, rufescens, sub-eequilateralis, omnino liris reflexis profundis arata; extremitate antico late rotun- dato; extrem. postico acutissimo ; margine dorsali postica concava, cristata, levigaté; marg. ventrali posticé sub-emarginata; denticulis utrinque 12-15. Long. 8+ ; alt. 6; lat. 4 millim. From Frying-pan Shoals, N. Carolina. Coast Survey. This small, acutely rostrate species greatly resembles one from the Bay of Bengal. The specimens examined were destitute of epider- mis, and probably worn. Genus Corrocueitus. T. chrysalidiformis, acuta, arcte perforata, castanea ; apertura a spira feré disjuncta; peristomate plus minusve duplici, lamina interna posticé incisi. Operculum (C. altum) cor- neum, multispirale, circulare, p!anulatum. 240 Type C. altum Sowb. and with it C. sectilabrum Gould, C. pauper- culum Sowb., and C. funiculatum Bens. These species, which have been included in the genus Megalomas- toma, are essentially different from the remarkable shells of the West Indies coming under that genus, although the single species M. Antil- larum has much the same character. Their habitat, general aspect, and especially the double peristome, which is quite obvious posteriorly, where the inner plate has a nick on one side or the other, give them a marked affinity. They group with Tortulosa, Pupina, Registoma, and similar eastern genera. Genus Ostopes. T. parva, turbinata, solida, ossea, albida, spira- liter sulcata interdum undulata, profundé umbilicata: apertura fere circularis; peristomate simplici, fer continuo; fauce porcellana. Operculum corneum, multispirale, sutura modica. Incole vibraculis subulatis, tenuibus ; oculis haud pedicellatis. Type Cyclostoma strigatum Gould, including also Cycl. plicatum Gd. (C. apiz Recl.), C. obligatum Gd., C. tiara Gd., C. flavum Brod., and probably C. margarita Pfr. and C. euomphalus Phil. This small group of shells, which has been included in the genus Cyclophorus, § 3, Pfr., comes nearer to Omphalotropis in the family Pupine. They are known by their bony structure, dingy white, un- polished, striated, waved or indented surface, simple aperture, and deep, spiral umbilicus, almost like Torinia. They are all from the Pacific Islands, mostly from the Samoa group. Lucia. Ligamentum nudum (?) latum: valvis carinatis, apiculatis delicaté pictis, pallidis, angulato-punctatis, ultimo gibboso, umbone centrali valde elevato; marginibus insertionis dentibus pectinatis nume- rosis instructis. L. confossa Gould, on which this genus is founded, has nine promi- nent pectinated teeth of insertion on the anterior valve, about twenty- five on the posterior, and five or six on each side of the central valves. The ligament, most Jikely, was finely imbricate. The posterior valve is very remarkable, the hinder portion rising vertically so as to form a right angle on the umbo. The pale lemon or cream color, delicately variegated with shades of red, and the sort of triangular or squamose puncturation, are quite characteristic. Ch. petaloides G. doubtless belongs to this genus; though the details of the plates of insertion were not examined. Both these shells are from the Pacific Islands, —the one from the Feejees, and the other from the Sandwich Islands; and, so far as I know, they are the only Chitons yet found at the Polynesian Islands. It is allied to Callochiton by its plates of insertion and central poste- rior umbo, but differs in its marginal ligament, and general aspect and ornamentation. 241 TreREDO, subgenus CALOBATES. Pallettes stilt-shaped, bony. Type, T. thoracites Gd. Page 222. XYLOPHAGA CARDISSA. T.rotundato-ovata, desuper visa cuneato- cordiformis ; rictu ventrali rhombeo ; angulo ventrali obtuso; angulo intrante etiam obtuso, apicibus rotundatis ; extremitate postica acuté rotundata ; extrem. antica curta, satis laté; umbonibus tumidis, glo- bosis; marginibus dorsalibus recurvis, umbilicum amplum efformanti- bus; suleco mediano utroque concentricé plicato; portione postica simplici; portione antica concinne et confertim denticulata ; apophysi gracili demum dilatato et arcuato. Long. 10; alt. 7; lat. 8 millim. From the Mergui Archipelago. Rev. Mr. Benjamin. The basal angles are much as in X. terediniformis ; but it differs from this and from X. aperta in the acutely ovate posterior form, the rounding of the angle apices, and the very delicate prominent sculpture. Genus Juxia. T. equivalvis, valde inequilateralis; umbonibas eminentibus, compressis, incurvatis ; areola cordiformi valdé impressa : cardo utraque valva sistens dente unico subcochleari, dextro post sinis- trum aptante, et rima transversa antice limitato; sinistro ab umbone fissura sejuncto: ligamentum marginale: cicatrix unica, subcen- tralis, tripartita. This curious genus bears no resemblance to any one yet described, unless it be to Reniella Swains., which has been pronounced to be the early stage of Vulsella. It is very difficult to assign it a place; but it must at present be associated with Vulsella and Pedum, though exter- nally it has the texture, polish and ornamentation of the Veneride. The delicate fissures issuing at the hinge indicate the possession of a byssus. Further observations must solve our doubts. JULIA EXxQuIsITA. T. parva, ovata, antice insigniter rostrata, ossea, polita, concentrice undulata, smaragdina ubique fusco radiatim punctata et interdum albo articulata; margine postero-dorsali laté arcu- ato; m. ventrali instricta: intus margaritacea, radiatim exilissimé striata; margine everso, tenuissime crenulato. Long. 5; lat. 4; alt. 4 millim. Inhabits Sandwich Islands. Rev. Mr. Johnson. A beautiful little shell, colored like Smaragdinella from the same islands. The sudden and profound depression in front of the beaks is quite striking, and thus produces a very pointed somewhat upturned anterior end. A single valve looks much like some of the Bullide, Chelidonura, for instance. 31 242 RECTILELCG AT LOWS: Since the time when the printing of the “ Expedition Shells” was begun, in 1546, great changes have been made in nomenclature. Very many new genera and subgenera have been instituted, some of which have been fully established by the structure of the mollusks producing the shells. Meantime, also, the same species has, in many instances, been described by different authors under different names. Some of the most important rectifications, thus becoming necessary, are given below, and are, for the most part, indicated by being in- closed in brackets [ ]. Page 8. Chiton [Onithochiton] quercinus, jaspideus (p. 4); den- tiens (p. 6.) Page 3. Chiton [Lophyrus] jugosus. Page 4. Chiton [Lepidopleura] platessa. Page 4. Chiton fruticosus = C. divergens Rv. (1847.) Page 5. Chiton [Leptochiton] pruinosus, interstinctus. Page 5. Chiton [Lucia] confossus (6) petaloides. Page 5. Chiton [Chzetopleura] muscosus, vespertinus. Page 6. Patella taleosa = P. cuprea Rv. (1854.) Page 7. Patella [Tectura] fimbriata — P. cinis Rv. (1854.) Page 8, Patella Paumotensis = P. cretacea Rv. (1854), and _pos- sibly may be P. pentagona Born. Page 8. Patella luctuosa Rv., may be P. margaritaria Chem. Page 8. Patella piperata seems to be P. rustica L. Page 9. Patella [Scutellina] cinnamomea. Page 9. Patella [Nacella] instabilis. Page 9. Patella [Scurria] conica. Page 9. Lottia [Tectura] pintadina, probably — patina Esch.; some of its varieties are ‘I. mesoleuca Menke (1851) diaphana, Cumingii and verriculata Rv. Page 9. Lottia [Tectura] onychina. Page 9. Siphonaria normalis = 8. funiculata, postea lirata Rv. (1856.) 243 Page 9. Fissurella cratitia — F. aspera Eschholtz (1833.) Page 10. Patella [Tectura] araneosa, cymbiola. Page 10. Patella [Tectura] scabra = spectrum Kv., but is not his scabra (1854.) Page 10. Patella [Tectura] textilis is a variety of T. persona Esch. Page 14. Rimula [Cemoria] cucullata, galeata, cognata. Page 14. Crepidula rostriformis = C. adunca Sowb. (1825.) Page 15. Calyptrea [Crucibulum] fastigiata. Page 16. Helix [Mesodon] labiosa — H. Columbiana Lea. (1836.) Page 17. Helix [Mesodon] devia = H. Baskervillei Pfr. (1849.) Page 17. Helix [ Anchistoma] loricata = H. Lecontei Lea (1852.) Page 17. Helix gulosa is perhaps H. Lessoni Pfr. For the animal see under H. pedestris, p. 18. Its peculiarities are such as to give it a generic distinction; and I would name it BADISTES. Page 17. Helix [Theba] ziczac, perhaps H. Ide Gray (1849) and rapida Pfr. (1853.) Page 18. Helix pedestris is H. Townsendiana Lea (young) ; the animal here described belongs to H. [Badistes] gulosa, p. 17. Page 18. Helix [Iberus],strigosa, sportella, spirillus, pauxillus. Page 19. Pusillus change to pauxillus. Page 19. Helix [Microcystis Pfr.] exequata = H. disculus Pfr. (1850.) Page 20. Helix [Helicostyla s. g. Corasia] .cicercula, cultrata = callifera Pfr., cryptoportica (1850.) Page 21. Helix [Discus Fitzinger, Euryomphalus Beck] gradata, fornicata, rubiginosa. Page 21. Helix [Pitys] dedalea. Page 22. Helix [Pitys] obolus, setigera — hystrix Migh., stellula, bursatella = H. coarctata Pfr. (1849) + H. turricula Homb. & Jacq., a distorted variety + H. excavata, immature+H. streptaxon Rv. (1852) = H. cavernula Jacq. = H. oceanica LeGuillou, in Jardin des Plantes. Page 23. Helix [Trochomorpha] Cressida, trochiformis, Eurydice, Troilus = H. Videna Pfr.; var. b. — H. Crouani Le Guill. in Jardin des Plantes; var. c. — H. Apie+ Vahina Hombr. & Jacq. in Jardin des Plantes; var. e. is H. exclusa H. & J. Page 24. Nanina [Orpiella] scorpio. Page 25. Nanina [Hemiplecta] rubricata is H. Nouleti according to Pfeiffer = H. inornata Jacq.; H. lurida = H. Pfeifferi Phil. (1857) fide Pfeiffer. Page 25. Nanina calva, change to casca; may be H. Vitiensis Pfr. (1857.) Page 25. Page 25. 244 Nanina [s. g. Parthena] irradiata. Helix [Callicochlias] intaminata; probably H. Broderipii Pfr. 1846 = Carac. dealbata Brod. 1841. Page 26. Vitrina Ruivensis. Albers says this is V. Behni Lowe, while Lowe regards it as V. Teneriffe. Page 26. Vitrina marcida. Albers declares this to be the dead of immature V. nitida, while the animals are widely different. Page 27. Page 27. Page 28. formis. Page 28. Page 31. Page 31. Succinea [Helisaga] cepulla, rotundata, putamen. Succinea rotundata = S. Newcombi Pfr. (1854.) Succinea [Tapada] lumbalis, humerosa, infundibuli- Succinea [Brachyspira] vesicalis, lise ie Bulimus [ Orthalicus] prolatus. Bulimus [Charis] morosus, elobatus== Founaki Homb. & Jacq. in Jard. des Plantes. Page 32. Page 32. Page 32. Page 32. Page 33. Page 33. Page 33. Page 34. Page 35. Page 37. Bulimus [Napeus] pruninus = B. cyaneus Alb. (1857.) Bulimus [s. g. Rabdotus] ciliatus. Bulimus [Stenogyra] junceus. [ Otostomus] hybridus = B. egregius Pfr. (1845.) Partula [ Auriculella] pusilla. Partula zebrina = P. Recluziana Petit (1850.) Pupa [ Alea] tantilla. Pupa [Tornatellina s. g. Leptinaria] peponum. Achatinella [Leptachatina] acuminata, cerealis, guttula. Cyclostoma [Ostodes] plicatum (name preoccupied) = C. Apiz Recl. (1851) strigatum, obligatum, tiara. Page 39. scitulum. Page 41. Page 42. Plantes. Page 44. Page 44. Page 45. Page 47. Page 47. Cyclostoma [ Omphalotropis] terebrale, vallatum, roseum, Dombeya should be genus Chilina. Physa tabulata = P. Nove-Hollandie Jard. des Melania [Tiara] Cybele = M. villosa Phil. (1848.) Melania [Plotia] tetrica, terpsichore. Melania [ Aylacostoma] corporosa, lutosa, vainafa. Melania [Plotia] furfurosa. Neritina cholerica = N. sandalina Recluz, according to him, and may also be compared with N. Delesserti Petit (1853.) Page 48. Page 49. (1849.) Page 50. Page 50. Neritina chrysocolla = N. Roissyi Recluz, fide Recluz. Natica [Lunatia] Lewisii= N. herculea Middend. Natica [Lunatia] caurina, algida, soluta. Natica [Neverita] dilecta. 245 Page 52. Amnicola egena was published in the Government volume as A. gracilis. Page 52. Littorina patula = L. planaxis Phil. (1847.) Page 54. Turbo [Pachypoma] laciniatus. This shell comes from New Caledonia, and grows to a much larger size (three by two and a half inches) than here described. The old specimens lose the colu- mellar denticle and rosy tint, and the peritreme becomes produced. Sometimes the row of spines is doubled. Page 54. Turbo [Stella] confragosus, laciniatus, sirius. Page 54. Stilifer acicula = Eulima vitrea A. Ad. (1854.) Page 54. Solarium [Torinia] egenum. Page 55. Trochus [Cantharis] pruninus, texturatus. Page 55. Trochus [Ziziphinus] ligatus = castaneus Nutt. (1850.) Page 56. Trochus pupillus = Margarita calostoma A. Ad. (1851.) Compare also T. modestus Middend. (1849.) Page 56. Trochus [Gibbula] gradatus, jucundus, amcenus. Page 57. Trochus [Thalotia] elisus. Page 57. Trochus [Tectus] circumsutus, acinosus. Page 59. Trochus tantillus = Margarita angulata A. Ad. (1851.) Page 59. Trochus (Monod.) [ Camitia] rotellinus. Page 59. ‘Trochus (Monod.) [Clanculus] atropurpureus. Page 59. Trochus (Monod.) [Eucheles] instrictus. Page 60. Pyramidella [Rissoina] ambigua. Page 61. Cerithium invaginatum = C. planum Phil. (1839.) Page 61. Cerithium aduncum = C. dorsuosum A. Ad. (1855.) Page 63. Mangelia [ Cythara] cithara. Page 64. Fusus [ Neptunea] incisus. Page 64. Fusus [Bela] fidicula, sublutus. Page 64. Fusus [Trophon] crispus, liratus, Orpheus. Page 66. Murex (Trophon) ['Typhis] fruticosus. Page 67. Buccinum [Bullia s. g. Leiodomus] velatum. Page 67. Buccinum [Cominella] funereum. Page 67. Buccinum [Nassa s. g. Tritia] fossatum. Page 68. Buccinum (Pollia) [Nassaria] farinosum = Hindsia angicostata Pease (1860.) Page 70. Nassa[Tritia] mendica N. Woodwardi Forbes (1850.) Page 71. Columbella [Alia] gausapata, castanea. Page 71. Columbella [ Astyris] valga. Page 73. Mitra [ Pusia] encausta. Page 73. Pholas [Zirphea] patula. Page 74. Solen [Siliqua] scalprum. Page 76. Lutraria [Tresus] maxima. This should bear the name capa, first given by me, as the name maxima is preoccupied by Jonas (1844.) 246 Page 77. Osteodesma [Lyonsia] bracteatum, Brasiliense (s. g. Entodesma). Page 77. Mesodesma [Paphia] mundum. Page 78. Amphidesma [Semele] croceum. Page 78. Erycina (Poronia) [Scintilla] ovata. The height should be #15; the breadth 3 of an inch. Page 79. ‘Tellina [Tellinella] tithonia, exculta. Page 79. Tellina [Angulus] lauta, compta (inhabits Loo Choo Island). Page 80. Tellina [Arcopagia] concentrica, perula. Page 81. Donax [Latona] tinctus (inhabits Mergui Archipelago), pallidus. Page 82. Lucina [Mysia] inculta. Page 82. Lucina [Loripes] vesicula. Page 82. Lucina [Codakia] ramulosa _ fibula Rv. Page 83. Cardita [ Actinobolus] procera, ventricosa. Page 84. Venus toreuma is probably V. crebrisulca Sowb. Page 85. Arca [ Anomalocardia] sobria. Page 86. Cyrena [Corbicula] debilis. Page 87. Anodonta cognata = A. Oregonensis Lea (probably). Page 89. Unio dorsuosus = U. Nepeanensis Conr. (1850). Page 89. Unio verecundus = U. Bengalensis Lea (1835). Page 90. Avicula to be changed to Meleagrina. Page 97. Terebratula [Waldheimia] pulvinata, Patagonica. Page 97. Terebratula [Terebratella] caurina. Page 98. Bulla [Cylichna] parallela. Page 98. Bulla [Haminea] diaphana. ING cy a oS Acanthochetes achates, 118. Achatina [Carelia] adusta, 194. ——— balteata, 208. [Subulina] involuta, 192. paritura, 208. torrida, 192. ventricosa, 208. Achatinella [Leptachatina] “acuminata, [Leptachatina] cerealis, 35, 244 ellipsoidea, 35. fuliginosa, 196. [Leptachatina] guttula, 35, 244. marmorata, 34. microstoma, 196. nucleola, 196. radiata, 195. —————_ rubens, 195. 4 Aclis insignis, 175. Acmea dorsuosa, 115. [Nacella] paleacea, 184. Actzon secale, 113. Actinobolus procerus, 83, 246. ventricosus, 83, 246. ZESOPUS, (gen.) 138. /#sopus japonicus, 138. Agadina cucullata, 234. Alaba puncto-striata, 144. Alasmodon falcata, 87. Alia castanea, 71, 245. —— gausapata, 71, 245. Alvania acuminata, 146. fenestrata, 146. fusea, 147. ligata, 146. ——— pura, 146. quadrata, 146. —— tornatilis, 146. Alyceus pilula, 103. AMNICOLA, gen. Amnicola badia, 51. ciliata, 209. cincta, 199. corolla, 44. egena, 52, 245. racilis, 245. onginqua, 217. ———— protea, 217. Amphidesma [Semele] croceum, 78, 243. —— [Semele] flavescens, 211. Amphiperas bullatus, 140. Ampullaria balanoidea, 209. — columellaris, 51. | Anachis atrata, 131. — dorsuosa, 130. fulminea, 131. minuscula, 131. minuta, 130. ———— nebulosa, 130. zonata, 130. Ancylus aduncus, 41. —— eaulus, 106. Angulus lautus, 79, 246. ———- comp tus, 79, 246. Anodon ciconia, 213. —— cognata, 87, 246. feminalis, 87. glauca, 86. —— horda, 218. Anodonta inoseularis, 193. salweniana, 193. Anomalocardia sobria, 85, 246. Aplysia fimbriata, 210. pulmonica, 227. Arca [ Anomalocardia] sobria, 85, 246. Arcopagia concentrica 80, 246. — perula, 80, 246. Argonauta geniculata, 231. Arion foliolatus, 223. Arthemis lambata, 84. —— saceata, 215. Ascidia monstrans, 236. Assiminea debilis, 107. rubida, 107. Astarte quadrans, 181. Astyris rosacea, 180. labecula, 238. ——_valga, 71, 245. Atlanta cunicula, 235. ———_ primitia, 235. tessellata, 236. violacea, 236. Atys musearia, 111. —- porcellana, 111. Auricula [Reneeria] opportuna, 105. Auriculella pusilla, 23. Avicula [Meleagrina] vidua, 89, 246. —— maculata, 90. ———_ higra, 90. fucata, 91. —— glabra, 91. lurida, 91. sterna, 214. Aylacostoma corporosa, 45, 244. - lutosa, 45, 244. — vainafa, 46, 244. BADISTES, gen., 243. Badistes gulosa, 17, 248. 248 Balea-peregrina, 34. Bankivia lugubris, 157. Bela fidicula, 64, 245. — subluta, 65, 245. — turgida, 134. undatella, 238. 3ithynia divalis, 107. Bittium alutaceum, 142. eraticulatum, 141. — glareosum, 142. — parecum, 142. — pusillum, 62. Boltenia coacta, 236. Buecinum (Pollia) [Nassaria] farino- sum, 68, 245. Buccinum [Nassa] fossatum, 67, 245. {Cominella] funereum, 67, 245. [Neptunea] Rodgersi, 122. ———— | Astyris] rosaceum, 180. | Neptunea] Stimpsoni, 122. (Bullia?) velatum, 6, 245. Buceinulus strigosus, 114. A Bulimus atricallosus, 190. — [Orthalicus] ciliatus, 32, 244. Charis] elobatus, 31, 244. excelsus, 184. [Otostomus] hybridus, 32, 244. infracinctus, 208. ———— jnterstinetus, 1925210; Stenogyra] junceus, 32, 244. autus, 219. lepidus, 219. moniliferus, 198. [Charis] morosus, 31, 244. mucidus, 207. ——— [Orthalicus] prolatus, 3, 244. beepers] pruninus, 32, 244. rubicundulus, 192. turnix, 199. vegetus, 184. vesicalis, 184. Bulla [Tornatina] cerealis, 185. eens culcitella, 184. | Diaphana] debilis, 119. [Cylichna] obstricta, 180. [Cylichna| parallela, 98, 246. vernicosa, 111. Bullia [s. g. Leiodomus] velata, 67, 245. Callicochlias intaminata, 224, 244. Callista glandula, 169. Callochiton puniceus, 5. CALOBATES, sub. gen., 241. —_—— thoracites, 222, 241. Calyptrza chlorina, 16. [Crucibulum] fastigiata, 15, 243. radiosa, 15. Camitia rotellina, 59, 245. Cantharidus lineolatus, 157. Cantharis pruninus, 50. ———-— texturatus, 55. Capulus sagittifer, 226. Cardilia gemmulata, 170. : Cardita [Actinobolus] ventricosa, 83, 246. — [Actinobolus] procera, 83, 246. Cardium [Serripes] blandum, 83. ————- luteolabrum, 213. Carinaria cornucopia, 152. Cemoria cucullata, 14, 243. Cemoria galeata, 14, 243. Cerithidea sacrata, 60. Cerithiopsis aurantiaca, 142. laqueata, 142. rugosa, 143. ——————- semipicta, 143. Cerithium aduncum, 61, 245. ——_ [Pirenella?] celatum, 62. egenum, 62. ————_filosum, 62. invaginatum, 61, 245. irroratum, 61. —_—— — janthinum, 63. lacertinum, 141. ———— placidum, 141. — [Bittium] pusillum, 62. — ——— (Potamis) sacratum, 60. sordidulum, 61. stigmosum, 141. Chena lagenula, 161. Chetopleura lignosa, 3. muscosa, 6, 242. ~ plumosa, 118. — vespertina, 230, 242. Charis elobatus, 31, 244. —morosus, 31, 244. Cheletropis globosa, 152. Chemnitzia circumdata, 151. iota, 151. —_—— tenuicula, 186. torquata, 186. ——_—__—_ trachealis, 151. Chilina [Dombeya] fasciata, 41, 244. ———— obovata, 41, 244 Chione roscida, 169. CHIORHRA, (gen.) 230. ————— leonina, 230. Chiton (Leptochiton) comptus, 117. Lucia] confossus, 52. Onythochiton] dentiens, 6, 242. achates, 115. [Leptochiton] concinnus, 117. (Leptochiton) craticulatus, 117. |Lepidopleura] fruticosus, 4, 949 ats [Maugeria] incanus, 6. Interstinctus, 230, 242. (Leptochiton) Jacobeus, 117. [ Onythochiton] jaspideus, 4, 242. {Lophyrus] jugosus, 3, 242. (Lepidopleura) lepidus, 118. [ Cheetopleura] lignosus, 3. (Lophyrus) lugubris, 116. ——— [Chetopleura] muscosus, 6, 242. —— trneia} petaloides, 6, 242. — plumosus, 118. ——— |Lepidopleurus] platessa, 4, 242. ——— [Leptochiton] pruinosus, 5, 242. —— [Callochiton] puniceus, 5. Onythochiton] quercinus, 3, 242. (Molpalia) Stimpsoni, 118. vespertinus, 230, 242. —— — [Lepidopleura] viridulus, 5. Chlorostoma achates, 158. —______. rugatum, 158. ——__——-. undatella, 158. Chrysallida curtina, 237. Cingula aculeus, 182. atomaria, 147. ——— Peteningensis, 224. Clanculus atropurpureus, 59, 245. | 249 Clanculus jucundus, 156. Clathurella amplexa, 135. aspersa, 134. ———_—— filosa, 134. lacunosa, 135. peregrina, 134. rubicunda, 135. Clausilia insignis, 190. - preclara, 103. vespa, 230. Clavatula pungens, 136. Cleodora exacuta, 235. Grose falcata, 235. Creseis] munda, 235. —— — [Creseis] placida, 235. Clypidina altilis, 116. ————_ radiata, 116. textilis, 116. Codakia parvula, 174. —— ramulusa, 82, 246. Ccecum [Anellum] gracile, 151. Collonia lenticula, 160. ————- quantilla, 160. ——_——- verruca, 194. Columbellaalternata, 131. ——————_ araneosa, 132. ee [astaelae atrata, 131, ee alteata, 130. bicineta, 132. castanea, 71, 245. decolor, 132. Anachis] dorsuosa, 130. Anachis]| fulminea, 131. causapata, 71, 245. oa Tineolata, 132. [Asch minuscula, 131. Anachis] minuta, 130. Anachis]| nebulosa, 130. —— palumbina, 195. [Strombina] pungens, 132, valga, 71, 245. virginea, 131. ———_ [| Anachis] zonata, 130. Cominella funerea, 67, 245. Conus castrensis, 183. comptus, 187. dilectus, 73. pusillus, 187, ravus, 187. COPTOCHEILUS, sub. gen., 239. Coptocheilus sectilabrum, 190. Corbicula debilis, 86, 246. Corbula[Azara] rustica, 164. ——— venusta, 164. CORILLA, sub. gen., 103. . Corilla anguina, 200. pulvinaris, 103. refuga, 198. repercussa, 219. Crania [ Discina] radiosa, 231. Crenatula pergaminea, 91. Crepidula explanata, 184. —— lingulata, 15. nummaria, 15. rostriformis, 14, 243. Creseis falcata, 235. munda, 235. ———— placida, 235. CRITHE, gen., 138. Crithe atomaria, 139. Crucibulum fastigiatum, 15, 243. 32 Cryptodon polygonius, 174. subradiatus, 173, Cryptomya truncata, 163. CUOCURBITULA, gen., 161. Cyclas egregia, 86. nobilis, 218. —-patella, 86. Cyclostoma [Japonia]| barbata, 104. ——_—— [Megalomastoma] bicolor, 183. ——_— [Cistula] catenatum, 183. —— |Japonia] citharella, 104. {Chondropoma] clathratum, 183. — [Cyclophorus] cucullatum, 991 ———_-_— Cyclotus] diatretum, 38. _ Chondropoma] mahogani, 183. Ostodes| obligatum, 38, 244. [Cyelophorus] pernobilis, 190. fe eecdeel musiva, 104. [Ostodes] plicatum, 38, 244. Pollicaria] pollex, 221. tOmphalotronis] roseum, 39, 244. [Omphalotropis] scitulum, 39 [Coptocheilus] sectilabrum, 190. ——_—_— [Ostodes] strigatum, 38, 244. LOmnuslotonie | terebrale, . 39 39, 244. Ostodes] tiara, 37, 244. — Omphalotropis] vallatum, 39, 244. Cyclostrema modestum, 115. Cyclotus illotus, 104. Cylichna consobrina, 113. ellipsoidea, 112. leta, 112. melampoides, 113. obstricta, 180. operosa, 112. parallela, 98. protracta, 113- —_——-regularis, 112. — tubulosa, 113. — villica, 112. Cylindrella jejuna, 205. Macroceramus] ponutifica, 205. ——_———— porrecta, 189. Cynthia amphora, 236. Cypricardia [Trapezium] rosea, 84. Cyrena [Corbicula] debilis, 86, 246. Cythara cithara, 63. —-— lota, 135. Daphnella deluta, 135. Dentalium aciculum, 119. — buccinulum, 119. clavatum, 119. hexagonum, 119. intercalatum, 119. poreatum, 119. ———— strigatum, 119. Diaphana debilis, 179. Diloma nana, 156. ————- verruca, 156. Diphyllidia rubida, 230. 250 Diplodonta orbella, 212. Discina radiosa, 231. — stella, 120. Dombeya [Chilina] fasciata, 41, 244. Chilina] obovata, 41, 244. Donax crocatus, 82. flexuosus, 188. ——- obesus, 212. ———- [| Latona] pallidus, 81, 246. Latona! tinctus, 81, 246. Doris aspersa, 229. ——— aurita, 228. —— [Hexabranchus] cardinalis, 229. —— cerebralis, 228. —— dorsalis, 229. ——— [ Actinodoris] lilacina, 228. —— petechialis, 227. smaragdina, 227. spiraculata, 228. — [Hexabranchus] sumptuosa, 229. —— | Hexabranchus]| superba, 228. —— vermicelli, 227. Drillia eborea, 133. reciproca, 133. ———- seminifera, 63. —— vallata, 133. Dunkeria effusa, 151. suturalis, 237. Elenchus exiguus, 156. — ocellatus, 156. Elysia lobata, 230. Emarginula [Clypidina] altilis, 116. ——————-_aspera, 12. —__———- [Tugali] cinerea, 13. ———_-—_ [Clypidina] fungina, 12. Tugali] ossea, 12. ————_——- pileata, 116. —_—————_[Clypidina] radiata, 116. ——_——-——[Clypidina] textilis, 116. Ennea capitata, 193. ———- pumilio, 193. Erato leucophea, 189. Ervilia bisculpta, 166. ——— concentrica, 239. ——— livida, 166. Erycina Core ovata, 78, a —— [| Kellia] quadrata, 78. Ethalia capillata, 155. —rufula, 155. Eucheles instrictus, 59, 245. Eulima carneola, 148. Euthrya lacertina, 123. Eutropia modesta, 157. Felania usta, 170. Fissurella/Glyphis] eratitia, 13, 243. occidens, 15. ————__ verna, 13. Fossarus pusillus, 209. tornatilis, 110. Fusus ambustus, 187. ——— [Trophon] crispus, 64, 245. Bela] fidicula, 64, 245. —— | Neptunea] incisus, 64, 245. Trophon] liratus, 64, 245. —— modestus, 124. trophont orpheus, 65, 245. ——— |Trophon] scalariformis, i80. tNene sublutus, 65, 245. Neptunea] tornatus, 180, Gena concinna, 195. dilecta, 109. Gibberula lachrimula, 238. Gibbula ameena, 58, 245. colubrina, 58. fucata, 159. —— fulgens, 160. —— gaudiosa, 159. gradata, 56, 245. ———— jucunda, 56, 245. —— lepida, 160. — — loculosa, 159. ———— musiva, 159. —— redimita, 159. —— spurea, 58. Glabella lepida, 139. Glandina bullata, 205. Glyphis cratitia, 13, 243. Goniodoris dorsalis, 229. Gouldia dilecta, 170. ——_ fastigiata, 239. Haliotis crispata, 98. Haminea angusta, 111. Helicina beryllina, 37. ———— fulgora, 36. — — glabra, 183. —— multicolor, 36. — — musiva, 36. —— pallida, 37. ——trochlea, 36. ——_ uberta, 37. ——- verecunda, 105. Helisaga cepulla, 27, 244. ———- putamen, 27, 244. ————- rotundata, 27, 244. Helix abjecta, 204. —— eruginosa, 215. —— anceps, 190. —— [Corilla] anguina, 200. ——— arrosa, 215. —— bucculenta, 204. ——— [Pitys] bursatella, 22, 243. —— caleulosa, 224. —— [Hemiplecta] (Nanina) calva, 25, 243 —— capsella, 203. casea, 243. —-— cerea, 207. —— [Corasia] cicercula, 20, 243. ——— [Trochomorpha] Cressida,23, 243. —— |Corasia| eryptoportica, 20, 243. —— Corasia) cultrata, 20, 243. — Pity] dedalea, 21, 243. ——— damascenus, 219. ——— deyia, 17, 243. —— divesta, 204. —— electrina, 182. [Trochomorpha] Eurydice, 24, 243. —— [Microcystis] exzequata, 29, 243. fornicata, 21, 243. —— gabata, 189. —— [Euryomphala] gradata, 21, 248. —— [Serpentulus] gulosa, 17, 243. —— hepatizon, 197. —— honesta, 198. —— [Pitys] hystrix, 194. —— indecorata, 207. infrendens, 189. —— infumata, 215. [Callicochlias] intaminata, 224, 244 [Parthena] irradiata, 25, 244. 251 Helix labiosa, 16, 243. —-— labilis, 101. —— leta, 101. —— leporina, 203. — [Anchistoma] loricata, 17, 243. ——— [| Hemiplecta] lurida, 25. yrata, 19. —— maxillata, 203. —— mutata, 19. —— [Pitys] obolus, 22, 243, —— operculina, 102. ——— pauper, 102. —— pauxillus, 19, 243. —— pedestris, 18, 243. pellucida, 192. penicillata, 183. —— pertenuis, 20. —— pisolina, 107. —— procumbens, 189. —-— pupula, 102. —-— [Iberus] pusillus, 19, 243. ramentosa, 219. —— [Corilla] refuga, 198. | Corilla] repercussa, 219. retrorsa, 189. rotula, 203. —— rubiginosa, 21, 243. ——— [ Hemiplecta] rubricata, 25, 243. Nanina] ruida, 24. saturnia, 198. saxatilis, 19. —— [Orpiella] scorpio, 24, 243. —— selenina, 203. —— [Pitys] setigera, 194, 243. —— spirillus, 224, 243. —— [Iberus] sportella, 18, 243. —— squarrosa, 102. —— [Pitys] stellula, 194, 243. —— [Iberus] strigosa, 18, 243. —— [Zonites] subtilissima, 24. talcosa, 207. —— tentoriolum, 23. —— Hee neaaee Troilus, 23, 243. Irus] tumulus, 22. —— vultuosa, 204. —— [Theba] ziczae, 17, 243. Hemiplecta calva, 25, 243. —_—— — lurida, 25, 243. —_——_—_ rubriecata, 25, 245. Hexabranchus cardinalis, 229. sumptuosa, 229. superba, 228. Hipponix [Cochlolepas] imbricata, 16. Hyala abnormis, 152. Hyalza femoralis, 235. —— inermis, 234. Tphinée coronata, 121. Isapis ovoidea, 185. JAPONIA gen., 105. Japonia barbata, 104. — citharella, 104. ——— musiva, 104. JULIA, gen., 241. Julia exquisita, 241. Kellia balaustina, 172. bulla, 172. convexa, 173. —— compacta, 173. —— crenulata, 172. ——— quadrula, 78. —— undulata, 173. Lacuna carinata, 57. ——— neritoidea, 180. Latona pallidus, 81, 246. —— tinctus, 81, 246. Leda bicuspidata, 197. cuspidata, 175. —- Jacksonii, 181. ——- unea, 239. Leiodomus velatus, 67, 245. Lepidopleura fruticosa, 41, 242. —— lepida, 118. petaloides, 6. —_—_——— platessa, 4, 242. —_—— viridula, 5. Leptachatina acuminata, 35, 244. —_——_——— cerealis, 35, 244. —_—_—— _ guttula, 35, 244. —_——_—— striatula, 196. Leptochiton concinnus, 117. —_——_——- comptus, 117. ——_——_——- eraticulatus, 117. —_—_—_——- jnterstinctus, 230, 242. —_——_—- Jacobeus, 117. pruinosus, 5, 242. Lepton concentricum, 171. —— firmatum, 171. ———— lucidum, 172. Lima tetrica, 214. Limacina cucullata, 234. ————— scaphoidea, 234. Limnea chalybea, 180. —-——_ lanceata, 206. —— lepida, 41. ollula, 105. volutata, 41. Limax columbianus, 223. — fuliginosus, 223. —— olivaceus, 223. —— togatus, 182. —— tunicatus, 182. Liotia asteriscus, 114. fulgens, 114. loculosa, 114. — solidula, 114. Lithodomus faleatus, 213. Lithophagus faleatus, 213. | Litiopa decussata, 52. Littorina acuminata, 53. —— caliginosa, 53. —_—— cincta, 99. ———— lepida, 52. ——_—_—— patula, 52, 245. ————— plena, 53. ——— scutulata, 53. — vidua, 110. Livona picoides, 185. Lophyrus jugosus, 3, 242. — ——_lugubris, 116. Loripes rotata, 170. —— vesicula, 82, 246. Lottia[Tectura] cymbiola, 10. Tectura] onychina, 226, 242. ——— [Tectura] pintadina, 9, 242. LUCIA gen., 240. Lucia confossus, 5, 242. ——— petaloides, 6, 240, 242. Lucina (oaee inculta, 82, 246. enticula, 83. —— [Diplodonta] orbella, 212. [Codakia] parvula, 174. ——- pusilla, 239. 252 Lucina [Codakia] ramulosa, 82, 246. —— [Myrtea] seminula, 174. —-— [Loripes] vesicula, 82, 246. Lunatia algida, 50, 244. — caurina, 50, 244. —— Lewisii, 49, 244. —— soluta, 50, 243. Lutraria [Tresus] capax, 76, 245. lurida, 168. {Raéta] undulata, 211. { Mactrella] ventricosa, 211. Lyonsia bracteata, 77, 245. — — [Entodesma] Brasiliensis, 77, 245. —— flabellata, 162. ——— nitida, 187. -——— ventricosa, 162. Machera nitida, 179. — —- sodalis, 165. Macoma lunella, 167. Macroceramus pontificus, 205. Mactra [Spisula] cuneola, 75. —— debilis, 98. — —- deluta, 75. - falcata, 76. —— marcida, 76. —— [Spisula|] ovalis, 179. Mangelia albicincta, 13¥. — [Cythara] cithara, 63, 245. concinna, 137. dempsta, 137. ———— glareosa, 136. —_———_ intaminata, 136. — — [Setynis) labecula, 238. ————-_ lutea, 137. pura, 136. semiassa, 137. ———— tetragona, 137. Margarita albula, 154. ————-_argentata, 182. articulata, 153. ianthina, 153. lenticulina, 154. Magellanica, 225. —— —- musiva, 153. —mustelina, 154. Persica, 225. ————- pintado, 154. Marginella lachrimula, 288. lepida, 139. —————- seminula, 139. Martesia branchiata, 196. Maugeria incana, 6. Megerlea transversa, 120. Melania baccata, 200. batana, 191. —— bulbosa, 46. [Amnicola] corolla, 44. corporosa, 45, 244. —— [Tiara] Cybele, 44, 244. dolorosa, 108. fluctuosa, 200. ——- [Plotia] furfurosa, 47, 244. gracilina, 107. {Melanoides] herculea, 199. ——— humerosa, 200. —— libertina, 107. —— lutosa, 45, 244. —— mutans, [fuseata] 193. —— [Io] pagodula, 200. —— scipio, 45. Melania scitula, 46. Silicula, 46. —— [Plotia] Terpsichore, 44, 244. — [Plotia] tetrica, 44, 244. — Vainafa, 46, 244. Melanopsis Zelandica, 47. Meleagrina. See Avicula. Mercenaria Stimpsoni, 169. Mesodesma [ Paphia] mundum, 77, 245. Mitra capillata, 73. [ Pusia] encausta, 73, 245. cophina, 72. fidicula, 72. florida, 221. jaculanda, 129. rorata, 72. russa, 129. ——— secalina, 129. — vitellina, 72. Modiola {Modine nexa, [nigra] 182. —{Modiolaria] pectinula, 182. Dreissena] varicosa, 191. Modiolariaarcuata, 176. cuneata, 176. — cuprea, 175. expleta, 176. —nexa, 182. — pectinula, 182. — quadrula, 177. ————- varicosa, 176. Molpalia Stimpsoni, 118. Monilea [animal] 154. ———— apicina, 154. glareosa, 155. inepta, 155. nana, 155. ——— spuria, 155. ———— vernicosa, 155. Monodonta gemmula, 195. ——————- glabratum, 159. Monoptygma acuminata, 150. puncticulata, 149. ——_—_——_- sinuata, 150. Montacuta divaricata, 173. Morvillia zonata, 182. Murex [Typhis] fruticosus, 66, 245. ———- improbus, 125. Mya precisa, 75. Myadora fluctuosa, 161. Myrtea seminula, 174. Mysia abbreviata, 171. —— dolabrata, 171. ——-— figlina, 171. —— inculta, 82, 246. obliqua, 171. ——— usta, 170. Mytilus algosus, 94. —-— [ Modiola] areolatus, 93. coruscus, 177. —— [Aulacomya] divaricatus, 94. [ Modiola] flabellatus, 93. glomeratus, 214. | Modiola]} hepaticus, 93. mutabilis, 177. —— [ Modiolarea] pusillus, 95. ————_ pyriformis, 94. ——— trossulus, 94. Nacella instabilis, 9, 242. Nanina fricata, 223. Napeus pruninus, 32, 244. Narica ovoidea, 185. Nassa acinosa, 69. —— beata, 127. casta, 69. —— cinctella, 69. curta, 69. dermestina, 128. elata, 197. a poets | fossata, 67, 245. : ilacina, 225. lurida, 68. [Czsia] mendica, 70, 245. musiya, 68. mustelina, 127. —— optata, 128. paupera, 70. —— pediculina, 128. plebecula, 128. ——— plicatella, 237. ——— quantula, 128. reposta, 127. rubricata, 70. ——— spurea, 129. ——— sufilata, 127. ——— turbinea, 197. Nassaria curta, 125. -——_——-- farinosa, 68, 245. Natica jauaura algida, 50, 244. Lunatia] caurina, 50, 244. —— [Neverita] dilecta, 50, 244. —— [Acrybia] flava, 180. —— [Neverita] fossata, 202. ——- [ Lunatia] Lewisii, 49, 244. —— | Lunatia] puerilis, 109. ——— [Neverita] russa, 109. oe |e severa, 109. Lunatia} soluta, 50, 244. Nezra adunea, 162. Nematura puncticulata, 201. Neptunea estuosa, 123. — arata, 123. ——— incisa, 64, 245. —— [Sipho] terebralis, 123. Neritaarticulata, 201. —— crassa, 225. ———-pica, 108. —musiva, 49. Neritella [Clithon] penicillata, 108. puella, 108. Neritina ameena, 49. eapillulata, 200. cholerica, 47, 244. ——— chrysocolla, 48, 244. ——— helyola, 48. porcata, 47. ————— siderea, 48. Neverita dilecta, 50, 244. russa, 109. Nucula Heda bicuspidata, 197. Leda] Jacksonii, 181. ——— insignis, 175. ——- parvula, i75. —— [Yoldia] sapotilla, 181. — turgida, 199, Nuculina pretiosa, 170. Obeliscus buxeus, 147. ornatus, 147. Octopus furvus, 232. —— megalocyathus, 231. mimus, 231. —— mollis, 233. saree canaliculata, 180. 253 Octopus ornatus, 232. pusillus, 233. — tetricus, 232. Odostomia achates, 186. ——_——~ bullula, 148. ~ gravida, 186. — lirata, 148. obtusa, 149. physoides, 149. planata, 148. — scalarina, 149. — subplanata, 148. soluta, 149. —————- viridescens, 149. Olivella spreta, 137. Omalonyx explanata, 223. Ommastrephes insignis, 233. Omphalotropis rosea, 39, 244. — scitulum, 39, 244. stricta, 105. ———— terebralis, 39, 244. ——— vata oNe Onychoteuthis brevimanus, 234. —_———_——- rutilus, 2534. Onythochiton dentiens, 6, 242. ———__——_ jaspideus, 4, 242. ——_———_——_ quercinus, 3, 242. Orpiella scorpio, 24, 243. Orthalicus [Rabdotus] ciliatus, 32, 244. Osteodesma [Lyonsia 245. [Lyonsia] Brasiliense, 77, 245. —————_ [Lyonsia] nitidum, 187. OSTODES, gen., 283. ————-_ obligatum, 38. plicatum, 38. ———— strigatum, 38. —_——— tiara, 37. Ostrea circumsuta, 96. discoidea, 97. glomerata, 96. mordax, 96. —— rivularis, 178. Otostomus hybridus, 32. Paludestrina Peteningensis, 224. Paludina doliaris, 191. — histrica, 106. petrosa, 191, Pandora cistula, 77. Pandorina flabellata, 162. Panopea antarctica, 74. - fragilis, 163. ————- generosa, 74, 163. Paphia munda, 77, 245. Partula conica, 33. ———— [Auriculella] pusilla, 33, 244. ——— zebrina, 33, 244. Patella FBeutellt araneosa, 10, 243. Scutellina] cinnamomea, 9, 242. citrullus, 8. pesmi conica, 9, 242. ——_——-fimbriata, 7, 242. — grata, 115. illuminata, 7. ——. [Nacetts] instabilis, 9, 242. uctuosa, 8, 242. ——_— pallida, 115. ——— Paumotensis, 8, 242. ———— piperata, 8, 242. ———— sagittata, 7. bracteatum, 77, Patella [Tectura] scabra, 10, 243. —talcosa, 6, 242. —[Tectura] textilis, 10, 243. Paxillus lyratus, 110. ————— tantillus, 110. Pecten caurinus, 95. —— hericius, 95. letus, 95, 177. Pedicularia decussata, 215. PELEX, gen., 224. Pelex lateralis, 224. Peristernia fenestrata, 124. inculta, 124. Perna argillacea, 91. nana, 92. eremita, 92. —— torva, 92. Peronia acinosa, 226. corpulenta, 226. irrorata, 226. Persicula tantilla, 139. Petricola bulbosa, 210. Phallusia violacea, 236, Philine argentata, 111. —-— vitrea, 111. Pholas [Martesia] branchiata, 196. ——— ovoidea, 210. [Zirphza] patula, 73, 245. Phos varicosus, 66. Physa bullata, 216. elata, 185. ——— gibbosa, 42. —— humerosa, 216. —— reticulata, 43. ——— sinuata, 45. tabulata, 42, 244. venustula, 43. —— vinosa, 201. —— virgata, 216. ——-- virginea, 43. Pileopsis [Scutellina] crystallina, 16. Pinna senticosa, 93. Pirenella? czlata, 62. Pisania mollis, 124. Pitys bursatella, 22, 245. dedalea, 21, 248. —— obolus, 22, 243. Placobranchus ianthobaptus, 230. Placunanomia umbonata, 178. Planaxis cingulata, 140. inepta, 140. lineolatus, 60. Planorbis ammon, 216. ———— dentatus, 192. —_——— dilatatus, 182. gracilentus, 217. ————— hirsutus; 180. opercularis, 42. spirillus, 106. vermicularis, 42. Pleurotoma [ Drillia] seminifera, 63. Plicatula simplex, 178. POLLICARIA, gen., 221. Pollicaria pollex, 221. Polydonta gloriosum, 158. ————- lacertinum, 158. Poronia ovata, 78, 245. Psammobia figlina, 196, florida, 81. spatulata, 165. —_——_—— tenella, 166. 254 Pseudodon, sub gen., 194. Puncturella cognata, 226. Pupa [Ennea] capitata, 193. —- carinata, 183. —— [Vertigo] decora, 202. —- | Megaspira] elata, 34. —- [Cylindrella] lituus, 183. — [Vertigo] lyrata, 189. —- [Torquilla] mellita, 198. —- [Vertigo] milium, 182. ——- | Modicella] modica, 205. —- [ Tornatellina] peponum, 34, 244. —- [Cylindrella] porrecta, 189. —- [| Vertigo] procera, 182. —- | Ennea] pumilio, 193. — [| Modicella] servilis, 183. —-| Vertigo] simplex, 183. Vertigo] tantilla, 33, 244. ——- [Vertigo] variolosa, 204. Purpura ostrina, 225. Pusia encausta, 245. Pyramidella [Rissoina] ambigua, 60, 248. Rabdotus ciliatus, 244. Rhynconella lucida, 120. Rimula [Cemoria] cognata, 226, 243. — [Cemoria] cucullata, 14, 243. —_—— echinata, 116. ——— [Cemoria] galeata, 14, 243. Ringicula arctata, 122. denticulata, 121. doliaris, 121. Rissoa incompta, 238. ——— patens, 238. Rissoina ambigua, 60, 245. flexuosa, 144. ————- imbricata, 144. ———- lyrata, 145. ———- modesta, 145. — -— nitidula, 145. ————- plicatula, 145. — strigillata, 145. — tornatilis, 146. trochlearis, 144. —- villica, 145. RISSOLINA, Ss. g. 145. Rotella superba, 156. Saxicava flaccida, 163. Saxidomus ovatus, 168. Sealaria gracilenta, 99. ———— texturata, 99. Seaphella florida, 221. Scintilla ovata, 78. ————- thoracica, 174. Serobicularia adunca, 167. caduca, 166. Scurria conica, 9, 242. Scutellina cinnamonea, 9, 242. erystallina, 16. scobinata, 115. ———— unguiformis, 115. Segmentina lucida, 106. —_———— usta, 106. Semele alveata, 166. croceum, 78, 245. — duplicata, 166. flavescens, 211. nexilis, 238. ornata, 239. Sepioteuthis arctipinnis, 233. Septifer furcillata, 177. Serpentulus gulosus, 17. Setia patens, 238. Sigaretus debilis, 185. lucidus, 153. Siliqua scalprum, 74, 245. Siphonaria cornuta, 11. inculta, 11. — lateralis, 11. — lepida, 11. ——- normalis, 12, 242. Sistrum parvulum, 125. Solarium [Torinia] egenum, 54, 245. Solecurtus abbreviatus, 164. ———— debilis, 164. nitidus, 179. ———— strigosus, 164. Solemya pusilla, 16). Solen gracilis, 165. —— [Siliqua] scalprum, 74, 245. [Solecurtus] sicarius, 74. —— strictus, 165. Stella confragosa, 55, 245. laciniata, 55, 245. —— sirius, 55, 245. Stilifer acicula, 54, 245. Stomatella concinna, 195. decolorata, 5. tumida, 51. Streptaxis elisa, 220. exacutus, 220. — Petitii, 183. prostrata, 220. Sinensis, 103. Strigilla fucata, 212. Strombina pungens, 133. STYLOCHEILUS, gen., 227. Stylocheilus lineolatus, 227. ———- quercinus, 227. Subulina juncea, 32. —involuta, 192. Succinea canella, 29. [ Helisaga] cepulla, 27, 244. —- concordialis, 202. crocata, 29. - [Omalonyx] explanata, 223. helicoidea, 206. ———- humerosa, 28, 244. ~ infundibuliformis, 30, 244. ——_— lauta, 101. lumbalis, 28, 244. ————- luteola, 202: lyrata, 105. ——- Magellanica, 29, 244. ———- Manuana, 29. modesta, 29. —— — procera, 30. pudorina, 30. [| Helisaga] putamen, 28, 244. [ Helisaga ——— rusticana, 31. ——— semiserica, 199. spurca, 206. — venusta, 30. ———_ vesicalis, 28, 244. Syrnola subula, 148. Tapes fiuctuosa, 181. vernicosa, 168. Tectarius luteus, 153. Tectura araneosa, 10, 243. ———-_ cymbiola, 10, 243. — fimbriata, 7. rotundata, 27, 244. 255 Tectura onychina, 9, 242. pintadina, 9, 244. seabra, 10, 243. — textilis, 10, 243. Tectys acinosus, 57, 245. circumsutus, 57, 245. Tellina [Angulus] compta, 79, 246. — [Arcopagia] concentrica, 8., 246 cratitia, 168. prelinets exculta, 80. ucata, 212. gemma, 188. euglypta, 167. —— [ane une lauta, 79, 246. ubrica, 167. miniata, 212. [Areopagia] perula, 80, 246. ———— pura, 18s. rubicunda, 196. saccularia, 167. tersa, 188. — exculta, 246, 79. [Tellinella] tithonia, 79, 246. Terebra arguta, 126, 185. bipartita, 126. ——_—— prolixa, 127. Terebratella caurina, 97. — miniata, 120. Terebratula [Terebratella] caurina, 97. [Waldheimia] Patagonica, 97. Waldheimia] pulvinata, 97. —— [Megerlea] transversa, 120. Teredo [Calobates] thoracites, 222, 241. Thalotia elisa, 57, 245. Theba ziczac, 17, 243. Theoralubrica, 162. —— nitida, 162. obtusa, 162. Thracia concinna, 161. —-— cultrata, 161. —— pusilla, 161. Tiara Cybele, 44, 244. Terpsichore, 44, 244. tetrica, 44, 244. Torinia egena, 54, 245. Tornatella bullata, 98. Tornatellina [Leptinaria] peponum, 34, 244 Tornatina apicina, 112. ——_——— cerealis, 185. Torquilla mellita, 198. Tresus capax, 76, 245. Trichotropis coronata, 121. ————_——- ellipsoidea, 121. —————- pusillus, 209. Triforis caleuliferus, 144. clathratus, 144. —— —— intercalaris, 143. interfilatus, 143. Trigona tantilla, 188. Triton Brasilianum, 65. [ Monoplex] fossatum, 126. mundum, 66. Trivia gemmula, 195, Trochomorpha Cressida, 23, 243. ————— urydice, 24, 243. —_—_—_——_ Troilus, 23, 243. Trochus [Tectus] acinosus, 57, 245. Gibbula] amcenus, 58, 245. Sleneutus) atropurpureus, 59, 245. 256 Trochus Uvanilla] bicrenatus, 57. —[Tectus] circumsutus, 57, 245. Gibbula] colubrinus, 58. Thalotia] elisus, 57, 245. ——| Encheles] gemmatus, 195. ———_[Gibbula] gradatus, 56, 245. - [Bucheles } instrictus, 59, 245. Gibbula] jucundus, 56, 245. Ziziphinus] ligatus, 55, 245. [Chlorostoma] marcidus, 185. [Livona] picoides, 185. Cantharis] pruninus, 55, 245. [ Ziziphinus] pupillus, 56, 245. { Osilinus] pyriformis, 186. (Camitia] rotellinus, 59, 244. [Gibbula] spurcus, 58. Gibbula] tantillus, 59, 245. Cantharis] texturatus, 55, 245. Collonia] verruca, 195. Trophon crispus, 64, 245. incomptus, 125. ——-- liratus, 64, 245. Orpheus, 65, 245. — scalariformis, 180. ————- suppositus, 126. Truncatella aurantia, 39. porrecta, 40. rostrata, 40. —————-_ Vitiana, 40. Tugali cinerea, 13. ossea, 12. Turbo amussitatus, 160. eeu] confragosus, 54, 245. aciniatus, 55, 245. nocturnus, 160. —— [Stella] Sirius, 54, 245. Turbonilla celata, 150. obeliscus, 150. —————- ornata, 150. Turritella gracillima, 140. Typhis fruticosus, 66, 245. Unio bracteatus, 217. coruscus, 222. —- crispatus, 191. —- dorsuosus, 89, 246. exolescens, 191. famelicus, 88. —- foliaceus, 191. ——- generosus, 200. Unio lepidus, 222. —- lutulentus, 88. ——- manubius, 218. paludicolus, 197. ——- papyraceus, 197. ——- petrinus, 218. ——- profugus, 88. Tavoyensis, 190. verecundus, 89, 246. Uvanilla bicrenata, 57. Vaginulus Liberianus, 206. Valvata pupoidea, 180. Vanicoro sealarina, 110. velntina | Morwallal zonata, 182 Venus calearea, 85. [Tapes] fiuctuosa, 181. puellula, 169. Tapes] rigida, 85. —— Stimpsoni, 169. [Trigona] tantillus, 188. toreuma, 84, 246. Vertigo decora, 202. lyrata, 189. milinm, 182. nac¢a, 237. procera, 182. — simplex, 183. tantilla, 33, 244. variolosa, 204. Vitrina caperata, 26. imperator, 101. marcida, 26, 244. nitida, 26. ———— prestans, 190. robusta, 27. ——— Ruivensis, 26, 244. —— tenella, 26. Volvarina puella, 139. Waldheimia Patagonica, 97. Waldheimia pulvinata, 97. Yoldia obtusa, 175. Yoldia sapotilla, 181. Zirphea patula, 245. Ziziphinus acutus, 157. infuscatus, 157. ligatus, 55. pupillus, 56. urbanus, 157. 7 ra ~ cae mes