SYNONYMY OF ‘STREPOMATIDEA teom ad os a oe ea ’ “ > . ee er | * “il Th ic? " . ? “te, r - f So ee 4 bi { ‘ i 9 ; a ey roll ae . ‘<5 + ® ix frye a \ os ee oe ys a a ee ee 2 = St ® ee - o : ' Gr i x " : “ Tits “ a. Ae wh % . a ; ae, eal eS A " rei oj ie: Jor a Rit Oe int hie ie ne: 4 a 73 - i e ‘ >, > A ee. ath 4 ewe tas toon! - aN y F 5) CONTRIBUTIONS TO CONCHOLOGY.—VOL. 3. So BN ONY Mey OF THE SPECIES OF STREPOMATIDE (MELANIANS) OF THE UNITED STATES; WITH CRITICAL OBSERVATIONS ON THEIR AFFINITIES, AND DESCRIPTIONS OF LAND, FRESH WATER AND MARINE MOLLUSCA. BY GEORGE W. TRYON, JR, MEMBER OF THR ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA, CORRESPONDING MEMBER OF THE BOSTON SOCIETY OF NATURAL HISTORY, THE NEW YORK LYCEUM OF NATURAL HISTORY, THE CALIFORNIA ACADEMY OF NATURAL SCIENCES, &C. NEW YORK: BAILLIERE BROTHERS, 520 BROADWAY. y LONDON: om H. Bar.urere, 219 Recent STREET. fs ps ) 8 PARIS: J. B. BAILLUIERE EF Fits, RUE HAUTEFEUILLE. MADRID: C. BatLuy-BAILLIERE, CALLE DEL PRINCIPE. = a — esis | a nes rs iE re ( [ Ss THATS a RAD SA Aaa, Mit DY aA US AME FE foes fs * ~~ a id ad : > Be f 7): + » ¥ A f ? 4 By! * ‘ vl Ph ike a? ee & Ay . A Wie ’ MET ie et | Ne eat a wale in aN wey , - y . ; 7s | ANOS Tt dct ‘ ifn {% rh} veal ce al, : 3 ener St ma” his * ~ : - ov . ; Pn PESTS Wh TY, eth ye : 5 c rk a. fig Tuy sf 3 , Oe Ay Sa) AR r ; uy by. ; ® e : ae : | eine ; : » ° i q F ie ; ‘ ; ; ; ag, ‘ FT, es ae are ees , err bs i . : ‘ . . 7 a wi ; Y Ris at: aa Pi ‘ ya 0 XY 4 he SVS OD, PR As it eal: hs 1A My dary { ie é 4) Fag Wty cy ’ Me fy hy ra WY (ape-es x ah ft u i ¢ : filit Ay AY! ‘5 \ Wee Py p £ * a, ‘: \ | 4 yy ie aoe wid a at het’, ie ry Oe 1) id OF ac 7 b's f (Lat ae i - P bo v4 x 5 PREFACE. The major part of the following volume is occupied by an attempt to give a synonymy of the species of Strepomatide of the United States Though supplied with abundant material, and having, besides, access to all the principal collections of these shells, for the purposes of study and comparison, yet the subject is so vast, the species so numerous, and generally so variable, that the author cannot feel that confidence in having well performed the task he had undertaken, which he would like to experience. The results of my investigations, such as they are, are presented in the hope that they will not prove entirely useless to those who shall pursue the study of these very interesting animals. We would advise those who shall possess this volume, to have inserted alternate blank leaves, in binding it, for the purpose of adding species that may hereafter be described, and for corrections of the synonymy. We have given a very full Index of species, arranged alphabetically, under the various genera and subgenera adopted by us. This Index will be found much more complete and useful than those given by Mr. Reeve, and by Dr. Brot, as it includes a very large number of species described since the publication of those gentlemen’s works. April 15th, 1865. or CONTENTS. 1. Contributions towards a Monography of the Order Pholadacea, with Descriptions of New Species... ....... 0. seeseeees eee Svisneces =o 9 2. Descriptions of Two New Species of Fresh Water Mollusca, from PAM ATIVE tev abaesmesenccneeipr ote acelomesacesmioven seen ier yenasceyeiea pam, Sycanersees a 12 3. Description of a New Exotic Melania......... ....006 + densvones sarences aaperhe 13 4, Descriptions of New Species of Fresh Water Mollusca, belonging to ao ok 10. 1) 12. the Families Amnicolide, Valvatide, and Limnaeide; inhabit- BI QUAIL ONTIA 1s... panunn camoutens Mecget debiecopuelser etseas acttnaae saat taasers alee Me . Description of a New Species of Pleurocera.............s0 sserceeee sesseoece 17 . Description of a New Species of Teredo, from New Bedford, Mass. 17 . Descriptions of Two New Species of Mexican Land Shells.......... ++ 18 . Synonymy of the Species of Strepomatide, a Family of Fluviatile Mollusca, inhabiting North America, Part 1........cccssescsrscessee 19 do. do. do. oh HICH. sravc need ane 35 do. do. do. WG adew aseenventouevedieenere 61 do. do. do. MS. As cachet cease seoseeke % Additions to Synonymy of Strepomatidee .......,-sscsecee vseceeees eseese ere 91 Index OE OHOR TODS HH EET CEE EED BESO TR OOOH He BEE HER CoB oe OH CHHeHD BORE Ee BEES eerrede ebeeeetre 93 (Brom Proceedings of the Academy of Natural Scionces of Philada., May, 1863.) Contributions towards a Monography of the order of PHOLADACEA, with Descriptions of new Species.—No. 2, BY GEORGE W. TRYON, JR. Additions to Bibliography. Deshayes, G. P. Letter in Zeit. fiir Malak. p, 44, March, 1845. Dufo, M. H. * Observations sur les mollusques marins, terrestres et fluviatiles des iles Sechelles et des Amirantes.” Ann. des Sc. Nat. p. 221, 1840. Fischer, P. Note surl’animal du Jouannetia Cumingi, svive de la description de deux espéces nouvelles du méme genre. Journ. de Conchyl. p. 37!, Oct., 1862. Jonas, J. H. Bemerkungen iiber einige der von Lamarck jn seiner Hist. Natur. des Anim. s. Vertebr. aufgefiihrten Conchylien Arten, mit besonderer Riicksicht auf die Zusitze des Hernn, Deshayes. Zeit. fiir Malak. p. 135, Sept., 1844. Concbyliologische Notizen. Zeit, fiir Malak. p. 182., Nov., 1845. Stimpson, Wm. On the genus Diplothyra, Am. Jour. Science, p. 445, May, 1863. Descriptions of Species. RoCELLARIA DENTIFERA, Dufo. Gastrochxna dentiferay Dufo. Ann. des Sc. Nat. p. 221, 1840. Shell smooth and very thin, having an apophysis in the anterior part of each valve, and having also in each valve, but at the posterior extremity, a rounded and soldered piece. . Hab.—Madrepores, Seychelles and Admiral Islands. Very rare. JOUANNETIA Ducwassainet, Deshayes. Jouannetia Duchassaingi, Deshayes, Fischer, Journ. Conchyl. p. 375, t. 15, f, 3, Oct., 1862. “ Testa globosa, solidissima, alba, valvis antice callo solido, longitudinaliter striato, munitis; area antica longitudinaliter costata, transversim dense striata; area postica subtile et oblique striata; appendiculo postico valve dextre elon- gato, lato, rotundato, intus, levi; impressionibus muscularibus latis, crassis, lamelias prominentes formantibus. Diam. antér. post. 50 mill. Alt. BUS Hab.—Panama. (Coll. Deshayes.) Obs.—This fine species, which surpasses in its size the Jowan. pectinata, be- longs to the group of Jouan. Cuminigi; its specific characters are entirely dif- ferent, so that it is impossible to confound it with that species.” JoUANNETIA Vienont, Fischer. Jouannetia Vignoni, Fischer, Journ. de Conchyl. p. 376, t. 15, f. 4, Oct., 1862. “Testa rotundato-ovata globosa, solidiuscula, valvis antice callo inflato munitis; area antica radiatim costata, transversim et valide striata; area postica late sulcata (in valva dextra,) dense et transversim striata (in valva Sinistra;) appendiculo valye dextre elongato, rostrato, ad margines serrato ; impressionibus muscularibus posticis planis. Diam, antér. post. 10 millim. Alt. (Ve 10% ° Hab.—West Coast of Africa. (Captain Vignon.) Obs.—This curious species approaches to the group of J. globosa and pee- tata. It is remarkable for the development of the posterior appendage of the left valve, the inflation of the callous portion, &c. The above two species are interesting additions to a genus which has hitherto been quite limited in species. The discovery of two (possibly three) new species of Pholadacea inhabiting the West Coast of North America, occur-~ ring within a few months, proves the truth of the remarks J made on this subject in the Proc. A. N. 8., 1862, that, “‘ greatly as the number of species have been increased by modern research, it is evident, from the general diffusion of the Order throughout the world, and from the incompleteness of our researches in those regions, which appear most to abound in them,. . . that the number at present known must be indeed a very small proportion of those which future investigation will probably reveal to us.” Zigpa@A Gass, Tryon, plate 1, fig. 1. Shell large, transverse, obliquely divided by a deep furrow proceeding from the umbonal apex to the basal margin and forming a corresponding rib on the internal surface of the valve. Posteriorly to the furrow the shell is marked only by growth lines which, in crossing it, are elevated into sharp ribs, in which character they are continued to the anterior margin. The portion of the shell anterior to the radiating furrow is ornamented with numerous longitudinal rihs, approximating in pairs and rendered acutely scabrous at the intersection of the rib-like growth lines. Ventral anterior margin emarginate. Dorsal anterior margin reflected and closely appressed over the beaks. Posterior dorsal margin declining somewhat to'the quadrately rounded posterior lateral end. Color white. Dimensions.—Length 1} inch; breadth 24 inch. Breadth anterior to furrow 9-10 inch ; posterior to furrow 14 inch. Hab.—Coast of Japan ?—W. M. Gabb. My cabinet. Observations.—This species is very closely allied to Z. crispata of our Atlantic coast, but may be distinguished by its more numerous and more scabrous ribs, by its greater proportionate width and the very disproportionate size of its an- terior and posterior areas. Can this be the species which Dr. Carpenter, in his Catalogue of our West Coast Mollusca, refers with doubt to Z. erispata? In the exchanges of com- merce it may have been brought there, or, (no strange distribution in this family) it may even exist on both shores of the Pacific. Ireceived asingle valve, somewhat mutilated, from our fellow member, Mr.Wm. M. Gabb, now of San Francisco, Cal., and name it after him, in recognition of the active service he is rendering to the science of Conchology in his adopted State. XYLOTRYA SETACBEA, Tryon, plate 1, fig. 2, 3. Shell large, of nearly equal length and breadth. Beaks high, narrow, in- curved, and thickened, the apex lower than the auricle, which is long, moderately wide, extending more than half the length of the valve and joining the medial portion by arounded obtuse angle. Anterior area obliquely triangular, not more than half the length of the auricle, its upper edge protected by a rib culmina- ting dorsally in a sort of knob. The anterior margin of the medial portion of the valve is straight, forming an acute angle with the triangular area; the posterior margin is oblique and somewhat convex. The junction of the auricle is marked externally by a depression of the surface, and internally by a pro- jecting ledge. Apophysis short, oblique, broad. Base of valve tuberculate internally. The valve is white, tinged with pink anteriorly and slightly glossy. The anterior area, which is separated from the body by a deep, narrow, sulcation, is sculptured by about thirty sharply cut, prominent, transverse ribs. The body is marked, first, by a narrow longitudinal area which is clesely striate; then by 11 a narrow double rounded rib, the surface of which is triangularly striate; then by a depressed space equally wide, with its sides accurately defined, and trans~ versely sculptured. The whole surface of the body and auricle posteriorly is unmarked, except by growth lines, and the depression of surface at the com- mencement of the latter. Pallet large; the jointed portion about the same length as the stalk, rather wide, with lateral extremities acuminate and inclining upwards. Sides of the joints fringed. These joints number about sixteen or eighteen. Stalk very slender and rounded. Dimensions.—Length and breadth of valves about 3 inch. Length of pallets ll inch. Breadth of upper portion of pallets about $ inch. Hab.—Bay of San Francisco, Cal.—Rev. J. Rowell. My cabinet and cabinet of Mr. Rowell. Observations.—The valves of this species bear a very strong resemblance in size and form to 7. megotara, Hanley. From -X. bipennata, Turton, it is dis~- tinguished by the basal margins of the auricle and anterior area not being on the same transverse line, and by its broader, more closely jointed and shorter pallets. From _Y. cucudlata, Norman, it is distinguished by its different surface mark- ings and the sharp angle of the anterior area with the body. XY. fimbriata has a shorter pallet and much smaller and differently formed valve; the same may be said of Y. minima. XY. Stutchbwryi has very fine striz on the anterior area, and the pallets also differ. The latter, in the present species, are somewhat like those of XY. palmulata, Lam., but are longer than in that species, and differ in the relative length and diameter of the stalks, and also by their fringed joints. Our fellow member, Dr. A. L. Heermann, informed me some time since, of the existence of a shipworm at San Francisco, which, at the period of his visit there, (several years ago,) was committing great ravages in the destruction of the wharves of that city. It appears since to have become rare, and it was only after diligent inquiry that my friend, Mr. Gabb, found specimens in the collec- tion of Rev. J. Rowell, who kindly sent me one. Note on Diglothyra. In Am. Journ. Science and Arts, May, 1863, p. 455, is a note by Dr. Stimp- son on my genus Diplothyra, in which he asserts its identity with Martesta, upon the ground that the additional dorsal valve is not a generic character, being sometimes developed by Martesia cuneiformis. Although many of the speci- mens of Diplothyra Smithii do not exhibit the double dorsal valve, I attribute it to the suppression or abortion of that appendage, and regard the double valve as the normal condition of the genus and species. The shells which possess it are generally the largest and best examples, and its non-appearance in others is not surprising when we consider the character of the substance in which they reside, and the evident compression and distortion of many of the speci- mens. The species of the family Pholadide are very liable to distortion and to the suppression or division of their dorsal plates; for instance, in Dactylina dactylus they are frequently not developed at all; in Martesia striata several specimens before me exhibit incipient stages of a division of the umbonal plate into three, but I certainly would not on this account doubt the generic distinct- ness of Penitella, which is characterized by having three valves. If Dr. Stimpson’s M. cuneiformis, when perfect specimens are selected, exhibit dorsal valves corresponding with my figure of D. Smithii, then either M. cunei- formis must be a Diplothyra, or else the specimens alluded to are not veritable cuneiformis. I have very closely examined many specimens of cuneiformis, striata, obtecta, etc., but have not detected a second proper umbonal valve upon them. Mr. S. P. Woodward, some years since, regarded the differences in the um- 12 bonal plates as expressing specific value only, but his theory has since found no supporters. I have closely re-examined all the Pholades in my collection, and weighed anew the value of the specific and. generic characters, and the result is a renewed conviction that D. Smithii is a very distinct species and that Diplothyra possesses in its umbonal plates a good generic character. Note on Penicilline. In a review of my work on Pholadacea, published in the American Journal of Science, Prof. Gill suggests that Penicilline be elevated into a family, distinct from Gastrochenide, on account of the development of tentacles oa the mantle-margin of the animal of the former. I have reviewed the subject and find no reason to alter the conclusions to which I originally arrived, namely, to regard this difference in the animal, in connection with differences in the shell, as possessing the value of a subfamily. Indeed, Prof. Gill has himself separated, as a subfamily only, (Ceriphasinx) our American Melanians, which differ from the exotic species in having a mantle with a plain instead of fringed or tentaculate margin. Descriptions of two new Species of Fresh Water Mollusca, from Panama. BY GEO. W. TRYON, JR. 1. Puanorpis Fignpi, Tryon, plate 1, fig. 4, 5. Description.—Shell small, moderately thick, polished, unmarked except by growth lines. Whorls three, almost equally convex above and below, and rapidly enlarging. Spire not much depressed, umbilical region of moderate width andnot deep. Outer lip regularly rounded and almost equally expanded above and below the plane of the volutions. The aperture is slightly oblique. Dimensions.—Diam. maj. 6, min. 43 millim. Alt. 2} millim. Hab.—Panama. Capt. Field, U.S. N. Coll. A. N. S.; my coll. Observations.—This species resembles some varieties of Pl. dejlectus, Say, in which the whorl is not deflected at the aperture; butit differsin the sides being regularly rounded instead of carinate, as in that species, and also in the dila- tion of the aperture above and below the plane of the shell, in this respect re- sembling somewhat Pl. corpulentus, Say. Pl. Panamensis, Dunker, is a very different shell from Fieldit, being more de- pressed, differently sculptured, etc. Capt. Field presented to the Academy about a dozen specimens of this species, together with a new Ammicola (herein described,) and a few specimens of Succinea recisa, Morelet, all collected by himself at Panama. 2. AMNICOLA PANAMENSIS, Tryon, plate 1, f. 6 Deseription.—Shell conical, smooth and shining, consisting of four rapidly increasing, very convex whorls. Sutures deeply impressed ; spire prominent, apex acute. Aperture rounded; umbilical region slightly perforate. Dimensions.—Length 43 millim. Diameter 3 millim. Hab.—Panama. Capt. Field, U.S. N.; coll. A. N.S. Observations.—This shell is very like A. decisa, Hald., in form, but the whorls are more convex and the aperture nearly rotund. It also resembles A. Cincin- natiensis, Anth., which is, however, a more slender species. The shell is smaller than either of the above. I think this is the first species of Amnicola found upon the Isthmus. 15 Description of a new Exotic Melania. BY GEORGE W. TRYON, JR. Mgiania HELEN, Tryon, t. 1, f. 7. Desecription.—Shell turretted, whorls eight or nine, angulated in the middle, rather flattened above, convex below, sutures deeply impressed. Surface spirally nodulously ridged, the nodules running into waved longitudinal! ribs. Aperture narrow, a little produced in front, contracted behind. Outer lip sinuous, angulated in the middle. Dimensions.—Length 20 mill. Diam. 8 mill. JTab.—Philippine Islands. My cabinet. Observations.—This shell is allied to Melania perfecta, Mousson, from Java, but differs in being angulated, and in having a longer, narrower aperture; it is also a little smaller and the apicial whorls are sculptured, not smooth. Since the above description was written, I have observed in the collection at the Academy fine specimens of Melania Mauiensis, Lea, the sculpturing of which somewhat resembles this species, but they are much stouter, more obtuse shells, with the periphery not angulated. Descriptions of new Species of Fresh Water Mollusca, belonging to the Families AMNICOLIDZ, VALVATIDE and LIMNEIDZE; inhabiting Cali- fornia. BY GEO. W. TRYON, JR. The following species of Shells sent to me by my friend Mr. Wm. M. Gabb, were principally collected by Rey.J.Rowell, of San Francisco,—a gentleman who has devoted much time to the study of the Mollusca of the State of California. It is not without considerable hesitation that I propose new species in genera wherein the variations of form, due to climatal and other influeaces, are so great, and where the geographical distribution is frequently so extended; and it is only after very extensive comparisons with the related species which have already been characterized, that I select for description those among the suite sent to me which appear to be most distinct, leaving others unnamed, until a more extended exploration of the State shall give us a more perfect knowledge of the extent and relations of the Molluscous fauna inhabiting its waters. A considerable number of shells belonging to the above families, appear to inhabit the entire breadth of the continent; adding to these the forms ascer- tained to be peculiar to Oregon and California, we find already decided indica- tions that these States form the metropolis of the fresh-water Pulmono- branochiates of North America. I have added to the descriptions of new species, a list of those already described, which have been sent to me by Mr. Gabb, because, in most cases, the localities are new and interesting. AMNICOLIDA, Tryon, 1. AMNicoLa RowE.iu, Tryon, t. 1, f. 8, 9. Deseription.—Shell depressed, wider than high, consisting of three and a half whorls, which are regularly convex and rapidly enlarging; spire small, but little elevated, apex acute, sutures well marked; base convex, except that the region surrounding the umbilicus is flattened and inclining towards the axis, its outer boundary, consequently, is marked by an angle; umbilicus small but very distinct ; aperture half ovate, the labrum well rounded and thin, the labium bat slightly rounded, thickened, elevated from the body-whorl, forming an acute angle with the labrum above, and not impinging on the umbilicus. Surface marked with close, regular, minute strie, which become enlarged in 14 the flattened umbilical region into sharp crowded lines visible without a glass. Color light horn or yellowish, operculum darker. Operculum paucispiral, the lines of accretion very distinct and regular. Dimensions.—Length 2:5 mill. Diam. maj. 4. mill., min. 3 mill. Length of apert. 2 mill., breadth 1} mill. Hab.—Clear Lake, California. Rev. J. Rowell. My cabinet and cabinet of Mr. Rowell. Observations.—This species cannot be compared with any other hitherto described, being much more depressed, and widely distinct in the form of the umbilical region. It may possibly form a species of the genus Somatogyrus, recently proposed by my friend, Mr. Theo. Gill, for a small Mollusc from Iowa, which I described in the Proceedings of the Academy for September, 1862. 2. Pomatiopsis Binney, Tryon, t. 1, f. 10. Description.—Shell minute, elongated, consisting of four to five very convex whorls; apex somewhat obtuse; aperture ovate or nearly suborbicular, both lips rounded ; umbilicus very small. Color light-horn. Dimensions.—Length 3 mill. Diam. 1:6 millim. Length apert. 1-25 mill., breadth 1 mill. Hab.—Bolinas, California. Rev. J. Rowell. My cabinet and cabinet of Mr. Rowell. . Observations.—Seven specimens of this very small and exceedingly fragile species were sent to me; they exhibit, however, all the stages of growth from the very young to adult form. None of them retained the operculum. It is much smaller than any other species of Pomatiopsis, and is not likely to be confounded with any of them. It approaches nearest in form to two Earo- pean species of Bythinia, B. acuta and B. viridis: the former, however, has a more lengthened, acute spire, and the latter is a more robust and ventricose shell. AmnicoLa ProTgA, Gould, from Colorado Desert, described in Proc. Bost. Soc. N. Hist. v. 129, Oct., 1855, (read Dec. 20, 1854,)is the same as Melania exigua, Conrad, from same locality. Described in Proc. Acad. Nat. Sci. p. 269, Feb., 1855. (Read Feb. 13th, 1855.) The shell belongs to a new genus of the family Amnicolide. Some small fossil shells sent to me by my friend, Dr. F. B. Meek, appear to belong to the same genus. Of course Mr. Conrad’s specific name will take precedence over that of Dr. Gould. VALVATIDA. 3. VALVATA VIRENS, Tryon, t. 1, f. 11. Description.—Shell turbiniform, consisting of four well rounded whorls, spire elevated, apex acute, sutures deeply indented ; periphery almost angulated ; umbilicus very wide; aperture oval or nearly round, the peristome merely touching the body above. Surface closely striate. Color varying from brilli- ant to dark green. Dimensions.—Height 5 mill. Diam. maj. 5 mill., min. 4 mill. Length, apert. 2:5 mill., breadth 2 mill. Hab.—Clear Lake, California. Wm. M. Gabb. My cabinet and cabinet of Mr. Gabb. Observations.—A number of specimens of this species are before me, most of them being about two-thirds grown. It has no American analogue. LIMN AIDA. 4, Limnma ADELINA, Tryon, t. 1, f. 12. Description.—Shell thin, semi-transparent, body- whorl large, wide, convex ; spire small, consisting of five convex volutions, attenuating rapidly to an acute apex, sutures impressed; inner lip thin, reflected, but not covering the umbili- 15 cal fissure, which is narrow; columella twisted ; color light-horn, polished within the aperture, outer lip tinged with red within. Dimensions —Length 14 mill. Diam. maj. 8:5 mill. Length of aperture 9. millim., width 5 millim. Hab.—San Francisco, California. Rev. J. Rowell. My cabinet and cabinet of Mr. Rowell. Observations.—This shell is nearly allied to LZ. catascopium, Say, and perhaps more nearly to L. intermedia, Mich., of Europe. From the former it may be dis- tinguished by being more fragile, more transverse, with a smaller, more rapidly attenuating spire, but principally by the presence of an umbilical fis- sure, which in catascopium is entirely concealed by the appression of the la- bium. In this and other respects it is very near to ZL. intermedia, which, how- ever, has a shorter spire, of fewer volutions. I name this species after my sister, Miss Adeline S. Tryon, who has evinced much interest in conchological pursuits. 5. Limnma TraAsxit, Tryon, t. 1, f. 13. Deseription.—Shell elongated, the spire drawn out and apex acute. Whorls six, convex, almost shouldered, sutures deeply impressed. Aperture small, oval, labrum well rounded, labium slightly rounded, not appressed below, nor covering the umbilicus, which, though small, is very distinct. Colorlight-horn or cinereous. Dimensions.—Length 16 mill., diam. 8 mill. Length of aperture 7 mill. ; breadth 5 mill. Hab.—Mountain Lake, California. Rev. J. Rowell. My cabinet and cabinet of Mr. Rowell. : Observations.—At first I was disposed to regard this shell as a variety of L. proxima, Lea, but a comparison with the type specimens of that species shows the following differences: the volutions are not so oblique, and are more rounded, the aperture is also more rounded and the shell is umbilicated. Named in honor of Dr. J. B. Trask, one of the pioneers of Californian Conchology. Limna@A CAPERATA, Say. San Francisco. Oakland. Limn#A FraGIuis, Linn. San Francisco. Mountain Lake. Limn®A umBrosa, Say. San Francisco. Mountain Lake. LIMNHA REFLEXA, Say. Mountain Lake. 6. Puysa Gassi, Tryon, t. 1, f. 14. Description.—Shell large, thin, closely striated by the lines of growth ; body whorl inflated, its upper half flattehed so that the labrum appears angulated in the middle; spire moderate, apex acute, whorls six, convex, with distinct sutures. Color light corneous, very much polished within ; lip margined with red. Dimensions.—Length 25 mill., diam. 13 mill., length of aperture 15 mill., breadth 8 mill. Hab.—Mountain Lake, California; Rev. J. Rowell. Santa Ana River, Los Angelos Co., California; Wm. M. Gabb. My cabinet and cabinets of Mr. Rowell and Mr. Gabb. Observations.—Several specimens of this fine large species were communicated to me by my friend Mr.Wm. M. Gabb, after whom I take great pleasure in nam- ing it. It is a much larger, thinner species than Ph. heterostropha, Say, and is at once distinguished by the peculiar flattening of the superior portion of the body whorl. The same character will also distinguish it from Ph. bullata, Gould, in which species the aperture moreover is proportionately longer. Puysa Gyrina, Say. Mountain Lake. Puysa costata, Newcomb. Clear Lake. (Original loc.) Puysa numeROsA, Gould. Colorado Desert. (Orignal loc.) 16 Paysa virgata, Gould. Santa Ana River, Los Angelos Co. Puysa HETEROSTROPHA, Say. Dry Creek, Butte Co. Clear Lake, Centerville, Oakland. 7. ANCYLUS FRAGILIS, Tryon, t. 1, f. 15. Description.—Shell very small and fragile, sides nearly parallel or slightly in- curved in the middle, but diverging anteriorly; ends rounded. Apex elevated, acute, curved backwards, with about two-thirds of the shell anterior to it. Dimensions.—Size of the largest specimen. Length 4 mill., breadth 1:15 mill., heigth 1 mill. Most of the specimens do not exceed two-thirds of these dimensions. Hab.—Laguna Honda, California. Rev. J. Rowell. My cabinet and cabi- net of Mr. Rowell. Observations.—This species is smaller, thinner, and wants the convex lateral margins of our Anc. rivularis, Say. It agrees with that shell, however, in the greater width of its anterior end, while in the shape of its lateral margins it resembles Anc. parallelus, Hald. It is much the smallest of our species, PLANORBIS AMMoN, Gould. Pajaro River, Monterey Co. PLANORBIS TRIVOLVIS, Say. Mountain Lake. PLANORBIS GRACILENTUS, Gould. Mountain Lake. PLANORBIS VEMICULARIS, Gould. Mountain Lake. PLANORBIS ORERCULARIS, Gould. Mountain Lake Pranorpis Newserryi, Lea. Clear Lake. 17 (From Proceedings of the Academy of Natural Sciences of Philada., Oct. and Noy., 1863.) Description of a New Species of PLEUROCERA. BY GEORGE W, TRYON. JR. PLEUROCERA PLICATUM, Tryon, t. 2, f. 6. Description.—Shell ovate-conical, spire attenuate, the upper whorls closely plicate, the lower ones smooth or obsoletely concentrically striate. Whorls but slightly convex, sutures well impressed. Color light green, with usually a lighter band below the sutures, and ornamented with narrow or broad brown bands. Aperture canaliculately produced ; outer lip thin; columella twisted. Dimensions. L. *7, diam. +35 inch. Hab. Nashville, Tenn. Remarks. Lowe to Dr, Gould the opportunity of describing this beautiful little species. It differs from P. grossum, Anth., in being more slender, different in color, and in having bands. The aperture is not nearly so large, proportionally, and the plice are finer. Description of a new species of TEREDO, from New Bedford, Mass. BY GEORGE W. TRYON, JR. TEREDO THomsonu, Tryon, t. 2, f. 3, 4, 5. Description.—Valves convex, longer than wide; the body rather stout. Anterior auricle moderate, obliquely sub-triangular; the posterior auricle small, not very wide, short, somewhat reflected outwards. The dorsal margin does not rise above the beak, and the basal margin does not extend go far down the body, (which it joins almost at right angles,) as the anterior area. The transverse sculpture of the anterior area is sharply sculptured, and becoming much more crowded towards its basal margin. The body, which is surmounted by a narrow beak, and terminates below rather obtusely, has the usual depressed narrow radiating area much more depressed than in the other species, only obsoletely sculptured, and defined anteriorly by a quite prominent rib. The separation of the posterior auricle is determined by a rather strong sulcation. Internally, the shell is glossy and rather smooth; the posterior auricle overhangs, with a sharp, nearly straight projection. Immediately above this it is concave, then convex; and is marked by semicircular strong growth lines. Beak with an oblique tubercle. Body with a well developed depression corresponding to the radiating area outside. The usual internal rib is scarcely developed, but the posterior tubercle is very prominent. Apophysis thin, blade-shaped, a little wider at its termination, situated obliquely to the direction of the body, with one edge turned slightly towards it. Pallets obliquely, or sometimes regularly, obovate. The style is short and directed backwards. The margins of the blade are convex, sometimes regularly rounded, and sometimes heart-shaped at the end. From tbe style an elevated ridge extends around a portion of each side of the blade, and is smooth, while the centre, extending to the end, is lunately striate. The style extends in the form of a lamina through the centre of the other side of the blade. Tube not concamerated, rather thick, and frequently much twisted. Hab.—Marine Railway and Cedar Buoys, Harbor of New Bedford, Mass.— J. H. Thomson. Station.—Three or four feet below low water mark. Observation —This new species of Teredo differs from all the others in the very small proportionate size of the posterior auricle, and its not extending basally as low down as the anterior area, in the depressed obsoletely sculp- tured radiating area of the body, and the corresponding internal depression 18 and in many other minor respects. The pallets are not unlike those of 7. dilatata, Stimpson, but the shell differs very much. I am much indebted to my valued correspondent, John H. Thomson, Esq., of New Bedford, for over a hundred specimens of this species, and take great pleasure in dedicating it to him as a slight recognition of the services which he has rendered to most of the Conchologists of the United States. Ina recent letter, referring to this species, he writes, ‘“‘I am sorry to say that their name is legion, even the Cedar buoys in the Harbor only last one season. Teredo navalis, Linn. Accompanying the above were a few valves and tubes of this species. AXylotrya fimbriata, Jeffreys. I also found among the New Bedford Zeredx, two pallets, apparently belonging to this species. Aylotrya setacea,Tryon. Mr. Gabb writes to me that this Californian species, which I supposed was quite rare, when I described it, is committing great ravages in the harbor of San Francisco, and is unfortunately very numerous in individuals. Descriptions of two new species of Mexican Land Shells. BY GEORGE W. TRYON, JR. Hewix Rémonnv1i, Tryon, t. 2, f. 1. Description.—Shell narrowly umbilicated, thin, turbinately globose. Epi- dermis very thin, light corneus, with a single narrow chestnut band encir- cling the periphery and visible just above the sutures of the spire. Substance of shell thin and appearing smooth to the naked eye, but under a lens minutely punctate. Whorls four, slightly convex, the last rounded, scarcely descending. Base of the shell convex, but with a narrow angle around the umbilicus. Aperture rotundately semi-lunar; lip slightly expanded and reflected; the margins not approaching on the columella, which is entirely free from callus. Dimensions.—Diam. maj. 17. min, 15, alt, 12 mill. Habitat.—Cinaloa, near Mazatlan. Auguste Rémond. Observations.—This pretty species resembles, in some respects, H. Trypan- omphala Pfr. from “Sierra Maestra, Mexico,” but evidently differs somewhat in form, and particularly in that of the lip. I name it after our Corresponding Member, M. Auguste Remond, of the Calfornia Survey, who collected it and kindly sent it to me for description. The two specimens before me are almost precisely alike in form and size. Helix ventrosula, Pfr. Near Mazatlan; M. Remond. Not previously reported from the West Coast of Mexico. Glandina turris, Pfr. Near Mazatlan, M. Rémond. Cyctorus Coopreri, Tryon, t. 2, f. 2. Description.— Shell widely umbilicate, globosely turbinate, rather thick, covered with a corneous epidermis, unmarked except by crowded and rather deeply cut growth lines. Spire conoidal, more or less depressed. Whorls 4} to 5, convex. Lip simple, straight, acute; the junction of the margins scarcely angulated, and merely touching the body of the shell above. Aperture white and shining within. Operculum? Dimensions.—Diam. maj. 16, min. 14, alt. 12 mill. Long. apert. 7 mill. Habitat—Cinaloa, near Mazatlan. Auguste Rémond. Observations.—This species is not unlike C. translucidum, Sby., in form, but has a wider umbilicus, is much thicker in texture, and the growth lines are strongly impressed. ; ; Named after Dr. J. G. Cooper, Zoologist of the California State Geological Survey. 19 Synonymy of the species of STREPOMATIDZ#, a Family of Fluviatile Mollusca, inhabiting North America. Part I. BY GEORGE W. TRYON, JR. The following synonymy of the very numerous species of North American shells, heretofore considered Melanians, is offered as the result of a year’s study of the extensive collections of the Smithsonian Institution and of the Academy of Natural Sciences, as well as those of Messrs. Lea, Haldeman, Anthony, and Gould, together with my own, and several smaller collections. The present publication is preliminary to that of a complete illustrated Monograph of the Family, prepared at the request of the Smithsonian Insti- tution, (the MSS. of which is nearly completed) ; and is intended to invite criticism. Naturalists are requested to communicate to the author, without delay, any information they may possess regarding any of the species. As many of these species, being rare, have not been sufficiently studied to determine satisfactorily their true position with regard to allied forms, or in other words, their range of variation, it is particularly requested that Natur- alists residing near localities inhabited by the Strepomatide, would collect and transmit to the Smithsonian Institution, extensive suites of specimens, for which, if desired, a named suite will be returned. Family STREPOMATID, Haldeman. Strepomatide, Hald., Proc. Acad. Nat. Sci., Sept. 1863. Melaniana, Lam., Extr. d’ un Cours., 1812. Hist. Anim. Sans. Vert., vi. p. 163, 1822. Edit. 2, viii. p. 425, 1838. Deshayes, Encyc. Meth., iii. p. 431 and 553, 1832. Reeve, Zool. Proc., p. 76, 1841. Conch. Syst., ii. p. 119, 1842. Sowerby, Conch. Man., Ed. 2, p. 187, 1842. Catlow, Conch. Nomene., p. 185, 1845. Melanide, (part) Latreille, Fam. Nat., 1825. Lea, Proc. Philos. Soc., iii. p- 164, 1843. Melaniane, (part) Swainson, Malacol, p. 198, 340, 1840. Melaniade, (part) Gray, Syn. Brit. Mus., 1840. Turton’s Manual, ed. 2, p. 79, 85. Zool. Proc., part 15, p. 152, 1847. Melaniide, (part) Adams, Genera, p. 293, 1854. Oecriphasine, Gill, Proc. Acad. Nat. Sci., p. 34. 35, Feb. 1863. Synopsis of Genera. A. Aperture produced into a more or less obvious canal in front. Jrypanos- tomoid Section. 1. Shell fusiform, inflated, spire and canal produced, columella without deposit OU NACTOrsesecsas cceeee) eaanseu ec oneceleee cess Genus Jo, Lea. Shell conical or oval, canal not so much produced ..... ..cisecsesseancesesseeus Subgenus Pleurocera, Raf. 2. Shell oval, or turbiniform, or fusiform, with a revolving row of nodules on the periphery, canal short. Colu- mella callously thickened above and TiO W cece oat a2 ace vee deemtereranseteeboes Genus Angitrema, Hald. Shell oval or oblong, smaller, either smooth or adorned with nodules around the upper portion ofthe body WORT .cc0tceccsesenescaveccbuasPeemsatieer sets Subgenus Lithasta, Hald. CAL sKetKOVsG, speerssane jsaneceaetes sees sees Subgenus Strephobasis, Lea. 20 B. Aperture merely angulated in front, with no canal, and the columella per- fectly plain, not twisted, frequently callously thickened above. Gonitobasic Section. 3. Shell heavy, oval, oblong, or turrited, aperture entire ADOVE......eseeeeeee one Genus Goniobasis, Lea. 4. Aperture with asutural, pleurotomose lit AWOVErcessscsete-scsstereecnos sees eveee= Genus Schizostoma, Lea. C. Aperture entire and rounded in front. 5. Shell oval, heavy, columella callously RUG KONGOUA DONO sarc. .ncdesse-sceeleersesate Genus Anculosa, Say. Genus IO, Lea. Zo, Lea, Trans. Phil. Soc., iv. p. 122, 1831. Sowerby, Conch. Man. 2d Kdit., p. 167, 1842. DeKay, Moll. New York, p. 103, 1843. Hermannson, Indicis Generum Malacozoorum, p. 562, 1846. Io, Lea, (sp.) Gray, Proc. Zool. Soc., pt. 15, p. 153, 1847. Jay, Catalogue, 4th Edit., p. 277, 1852. H.and A. Adams, Genera i. p. 299. Chenu, Man. de Conchyl. i. p. 290, 1859. Anthony, Proc. Acad. Nat. Sci., p, 69, 1860. Reeve, Monog. Io, April, 1860. Binney, Check List, June, 1860. Brot, Cat. Syst. des Mélaniens, p. 29, 1862. Melafusus, Swainson, Malacol. p. 201, 341, 1840. Woodward, Manual, p. 131, 1851. Fusus, (sp.) Say, Jour. Acad. Nat. Sci., Ist series, v. pt. 1, p. 129, Nov., 1825. Melania, (sp.) Catlow and Reeve, Conch. Nomenc., 1845. SPECIES. A. Shell smooth or only slightly tuberculate. 1. I. fluvialis, Say. Fusus fluvialis, Say, Jour. Acad. Nat. Sci., v. p. 129, Nov. 1825. Conrad, New Fresh Water Shells, p. 12. ~ To fluvialis, Say, Binney, Check List, No. 400. Pleurocera fluvialis, Say, Haldeman, Iconog. Encye., ii. v. 84. To fluviatilis, Say, Woodward, Manual, t. 8, f. 27. Hanley, Conch. Mis¢., t. 6,f. 50. Reeve, Monog. Io, t. 1, f. 5. Brot, List, p. 29. Io fusiformis, Lea, Phil. Trans., iv. p. 122, t. 15, f. 37. a. b. Obs., i. p. 132. Ravenel. Cat., p. 11. Reeve, Monog. Io, t. 1, f. 6. DeKay, Moll. N.Y., p. 103. Wheatley, Cat. Shells U.5S., p.28. Jay, Cat. 4th Edit., p. 277. Troost, Cat. To tenebrosa, Lea, Philos. Proc., ii. p. 34, April, 1841. Phil. Trans., ix. p. 17. Obs. iv. p. 17. Wheatley, Cat. Shells U. S., p. 29. Binney, Check List, No. 404. Io verrucosa, Reeve, Monog. Io, t. 1, f. 2, April, 1860. Brot, List, p. 29. 2. I. inermis, Anthony. Io inermis, Anthony, Proc. Acad. Nat. Sci., Feb. 1860, p. 70. Check List, No, 401. Reeve, Monog. Io, t. 3, f. 21. Io lurida, Anthony, Reeve, Monog. Io, t. 3, f. 20. B. Shell spinose. Binney, 3. I. spinosa, Lea. Io spinosa, Lea, Philos. Trans., v. p. 112, t. 19, f. 79. Obs., i. p. 224. Troost, Cat. Wheatley, Cat. Shells U.S., p. 29. Jay, Cat. 4th Edit., p- 277. Binney, Check List, No. 402. Reeve, Monog. Io, t. 1. f. 7. Io gibbosa, Anthony, Reeve, Monog. Io, t. 3, f. 17. Io recta, Anthony, Reeve. Monog. Io, t. 3, f: 21. Io rhombica, Anthony, Reeve, Monog. Io, t. 3, f. 16. 21 4 I. brevis, Anthony. [fo brevis, Anthony, Proc. Acad. Nat. Sci., Feb. 1860,p. 69. Binney, Check List, No. 399. Reeve, Monog. To, ae t To Spirostoma, Anthony, Proc. Acad. Nat. Sci., Feb. 1860, p. 70. Binney, Check List, No. 403. Reeve, Monog. Io, ted) f 2: 5. IL turrita, Anthony. To turrita, Anthony, Proc. Acad. Nat. Sci., Feb. 1860, p. 69. Binney, Check List, No. 405. Reeve, Monog. Io, t. 3, f. 19. Spurious Species. Io nodosa, robusta, variabilis, Spillmanit, modesta, viridula, gracilis, nobilis, of Lea. These are species of Pleurocera. Subgenus PLEUROCERA, Rafinesque. Pleurocera, Rafinesque, Jour. de Phys. Bruxelles, tome 88, p. 423, 1819, Blainville, Dict. Sc. Nat., xxxii. p. 236, 1824, xli. p. 376, 1826, Man. Malacologie, p. 441, 1825. Rang, Man. Conchyl. p. 374, 1829. Menke. Syn. Method, Edit. 2, p. 43, 1830. Ferussac, Bull. Zool., p. 93, 1835. Sowerby, Conch. Man. Edit. 2, p. 231, 1842. Hermannson, Indicis Gen. Malacoz., i. p. 296. 1846. Haldeman, Iconog. Encyc., p. 84. Ceriphasia, Swainson, Malacol., p. 204, 342, 1840. Gray, Syn. Brit. Mus., 1844. Hermannson, Indic. Gen. Mal., i. p. 208, 1846. Gray, Zool. Proc. pt. 15, p. 153, 1847. H. and A. Adams, Genera, Recent, Moll. i. p- 297, 1854. Chenu, Manuel de Conchyl. i. p. 288, 1859. Telescopella, Gray, Proc. Zool. Soc., pt. 15, p. 153, 1847. Elimia, (part) H. and A. Adams, Genera, i. p. 300, 1854. Chenu, Man. de Conchyl .i. p. 290, 1859. Megara, (part) H. and A. Adams, Genera, i. p. 306, 1854. Chenu, Man. de Conchyl. i. p, 293, 1859. Trypanostoma, Lea, Proc. Acad. Nat. Sci., p. 169, April 1862. Jour. Acad. Nat. Sci., 2d ser. v. pt. 3, p. 268, March, 1863. Obs., ix. p. 90, March, 1863. Melania, (sp.) of authors. Binney, Check List. Reeve, Monog. Mel., Nov., 1859, to June, 1861. Brot, Cat. Syst., p. 30, 1862. SPECIES. A. Tuberculate. 1. P. alveare, Conrad. Melania alveare, Conrad, New Fresh Water Shells, p. 54, t. 4, f. 7, 1834. DeKay, Moll. N. Y., p. 94. Wheatley, Cat. Shells U. S., p. 24. Jay, Cat. 4th Edit., p. 272. Binney, Check List, No. 11. Brot, List, p. 30. Hanley, Conch. Mise., t. 8, f. 74. Megara alveare, Conrad, Chenu, Manual, i. f. 2022. Melania torquata, Lea, Philos. Proc., ii. p. 242, Dec., 1842. Philos. Trans. ix. p. 27. Obs., iv. p. 27. Wheatley, Cat. Shells U. S., p. 27. Bin- ney, Check List, No. 271. Melania pernodosa, Lea, Philos. Proc. iv. p. 105, Aug., 1845. Philos. Trans. x. p. 66, t. 9, f. 49. Obs., iv. p. 66, t. 9, f. 49. Binney, Check List, No. 202. Melania nupera, Say, (young) American Conchol. pt. 1, t. 8, middle figure. Melania producta,* Lea, Philos. Proc., ii. p. 243, Dec., 1842. Philos. Trans., ix. p. 28. Obs., iv. p. 28. Wheatley, Cat. Shells, U. 5., p- 26. Bin- ney, Check List, No. 217. Brot, List, p. 36. Melania grossa,* Anthony, Proc. Acad. Nat. Sci., p.59, Feb., 1860. Brot, List, p. 40. Reeve, Monog. f. 4\1. * M. productum and grossa are the young of a large variety of alveare. 22 2. P. Foremani,* Lea. Melania Foremani, Lea, Philos. Proc., ii. p. 242. Philos, Trans., ix. p. 27. Obs., iv. p. 27. Binney, Check List, No. 111. Brot. List, p. 30. Reeve, Monog., f. 432. Melania Foremanii, Lea, Wheatley, Cat. Shells, U. S., p. 25. 3. P. undulatum,y; Say. Melania undulata, Say, New Harmony Dissem., p. 261. Reprint, p. 17. Binney’s Edit., p. 142. Reeve, Monog., f. 307. Haldeman, Am. Jour. Sci., xlii. p. 216, Dec., 1841. Anthony’s List, lst and 2d Edit. DeKay, Moll. N. Y., p. 92. Wheatley, Cat. Shells U.S., p. 27. Jay, Cat., 4th Edit., p. 275. Binney, Check List, No. 281. Brot. List, p. 31. Hanley, Conch. Misc., t. 1, f. 10. Catlow, Conch. Nomenc. p. 189. Megara undulata, Say, Chenu, Man. Conchyl. i. f. 2025, 4, P. excuratum, Conrad. Melania excurata, Conrad, New Fresh Water Shells, p. 49, t. 4, f. 6, 1834. Anthony, List, lst and 2d Edit. Jay, Cat., 4th Edit., p. 273. DeKay, Moll. N. Y., p. 96. Binney, Check List, No. 103. Melania excurvata,t Conrad, Wheatley, Cat. Shells U. 8., p. 25. Melania rorata, Reeve, Monog. Mel., sp. 306. Brot. List., p. 31. Io Spillmanii,§ Lea, Proc. Acad. Nat. Sci., p. 394, 1861. Jour. Acad. Nat. Sci., v. pt. 3, p. 348, t. 39, f. 215. Obs. ix. p. 170. 5. P. moniliferum,|| Lea. Trypanostoma moniliferum, Lea, Proc. Acad. Nat. Sci., p. 172, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 295, t. 36, f. 125, March, 1863. Obs., ix. Dela. Io nodosa, Lea, Proc. Acad. Sci. p. 393, 1861. Jour. Acad. Nat. Sci., v. pt. 3, p. 346, t. 39, f. 212, March, 1863. Obs., ix. p. 168. To variabilis," Lea, Proc. Acad. Nat. Sci., p. 393, 1861. Jour. Acad. Nat. Sci., v. pt. 3, p. 347, t. 39, f. 214, March, 1863. Obs., ix. p. 169. 6. P. nobile, Lea. Melania nobilis, Lea, Philos. Proc., iv. p. 165, Aug., 1845. Philos. Trans. x. p. 65, t. 9, f. 48. Obs., iv. p. 65. Binney, Check List, No. 179. 7. P. robustum,** Lea. Io robusta, Lea, Proc. Acad. Nat. Sci., p. 393, 1861. Jour. Acad. Nat. Sci., v. pt. 3, p. 346, t. 39, f. 213, March, 1863. Obs. ix. p. 168. B. Sulcate.tt §& P. canaliculatum, Say. Melania canaliculata, Say, Jour. Acad. Nat. Sci., ii. p. 175, January, 1821. * = Prasinatum, Conrad? 7 = Canaliculatum, Say? { The tpyical excuratum differs widely enough from wndulatum Say, but there exist intermedi- ate forms of a nature to peiplex the naturalist. Among these may be mentioned ponderosum, Anth., (dux, Lea) with the tubercles and canal nearly obsolete, and the revolving strize vevy faint, so that the surface of the shell appears at first sight to be flat and smooth; also annuliferum, Con., in which the revolving lines are more strongly developed. Theseshells partake of one general type, and form a natural group of closely related species at the least. 4 Juvenile shell. || Not so narrow in its proportions as excwratum, more frequently banded, and having the upper whorls of the spire smooth, whereas in excuratwm they are striate. This difference is more apparent in comparing young specimens. { Juvenile shell. ** Not so much angled on the periphery as wndulatum, with the inferior portion of the hody whorl longer and more convex. It bears the same general relation to wndulatwm as Troostii does to canaliculatum ; and the four may be but one species. ++ The deep sulcus which distinguishes Mr. Say’s Melania canaliculata in its typical form, shades off so gradually into a smooth flattened surface, that not only is it difficult to arrange the species of this group, but it iseyen doubtful whether many of the species which are placed in other groups are really distinct. 23 Binney’s Reprint, p. 65. Binney, Check List, No. 45. DeKay, Moll, N. Y., p. 94. Wheatley, Cat. Shells U.S., p. 24. Ravenel, Cat., p. ll. Jay, Cat., 4th Edit., p. 273. Anthony, List, lst and 2d Edit Kirtland, Report Zool. Ohio, p.174. Catlow, Conch. Nomenc., p. 185. Brot, List, p. 30. Reeve, Monog. Mel., sp. 304. Ceriphasia canaliculata, Say, Chenu, Manuel, Conchyl. i. f. 1959. Melania conica,* Say, Jour. Acad, Nat. Sci., ii. p. 176, January, 1821. Bin- ney’s Reprint, p. 70. Binney, Check List, No. 65. Reeve, Monog. Mel., sp. 252. DeKay, Moll. N. Y., p. 95. Ravenel, Cat., p. 11. Haldeman, Monog. Limniades, No. 7, p.4 of Cover. Brot. List, p. 30. Kirtland, Rep. Zool. Ohio, p. 174. Anthony, List, lst and 2d Edit. Jay, Cat., 4th Edit., p. 273. Wheatley, Cat. Shells U. S., p. 24. Catlow, Conch. Nomence., p. 186. Melania substricta,t Haldeman, Suppl. to Monog. of Limniades. Strombus Sayi, Wood, Index Testaceol. Suppl., t. 4, f. 24. Melania Sayi, Wood. Short and Eaton, Notices, p. 82. Anthony, List, 1st and 2d Edit. Melania Sayi, Ward. Wheatley, Cat. Shells U. S., p. 27. Melania Sayii, Ward. Kirtland, Rept. Zool. Ohio, p. 174. Jay, Cat., 4th Edit., p. 274. Higgins, Cat., p. 7. Melania Sayii, Deshayes, Catlow, Conch. Nomenc., p. 188. Melania exarata, Menke, Syn. Meth., p. 135, 1830. Binney, Check List, No. 100. Melania ligata, Menke, Syn. Meth., p. 136, 1830. Binney, Check List, No. 162. Melania auriscalpium, Menke, Syn. Meth., p. 136, 1830. Binney, Check List, No. 25. 9. P. filum,} Lea, Melania filum, Lea, Philos. Proc., iv. p. 165. Philos. Trans., x. p. 62, t. 9, f. 41. Obs., iv. p. 62. Binney, Check List, No. 109. Brot, List, p. 30. Reeve, Monog. Mel., sp. 402? Elimia filum, Lea, Chenu, Man. Conchyl. i. f. 1980. 10. P. ponderosum,§ Anthony. Melania ponderosa, Anthony, Proc. Acad. Nat. Sci.. Feb., 1860, p. 59. Bin- ney, Check List, No. 213. Brot, List, p. 59. Trypanostoma dux, Lea, Proc. Acad. Nat. Sci., p. 170, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 283, t. 36, f. 105. Obs., ix. p. 105. 11. P. olivaceum, Lea. Trypanostoma olivaceum, Lea, Proc. Acad. Nat. Sci., p. 172, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 290, t. 36, f. 117. Obs., ix. p. 112. 12. P. Troostii,|| Lea. Trypanostoma Troostii, Lea, Proc. Acad. Nat. Sci., p. 171, 1262. Jour. Acad. Nat. Sci., v. pt. 3, p. 285, t. 36, f. 107. Obs., ix. p. 107. Trypanostoma viride," Lea, Proc. Acad. Nat. Sci., p. 172. 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 291, t- 36, f. 119. Obs., ix. p. 113. Trypanostoma ligatum,** Lea, Proc. Acad. Nat. Sci., p. 171, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 288, t. 36, f. 114.° Obs., ix. p. 110. * Juvenile shell. + Proposed under the impression that conica was preoccupied. tf Distinguished from canaliculatum by its more elevated spire, more prominent carina, and flat- tened whorls, It almost entirely replaces canaliculatum in the waters of Tennessee, and if spe- cificially identical with that species, must at least be distinguished as a local variety. @ Appears to be doubtfully distinct from canaliculatum, excuratum, &c. It is doubtful, indeed, whether the whole group contains more than one species. || More inflated and more convex than canaliculatum, with the inferior half of the body whorl longer and more convex. { ** Young shells of Zroostii in different stages of growth. 24 13. P. moriforme, Lea. Trypanostoma moriforme, Lea, Proc. Acad. Nat. Sci., p. 172, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 290, t. 36, f. 118. Obs., ix. p. 112. 14. P. Py basii, Lea. Trypanostoma Pybasii, Lea, Proc. Acad. Nat. Sci., p. 172, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 289, t, 36, f. 115. Obs., ix. p. 111. 15. P. Showalterii, Lea. Trypanostoma Showalterii, Lea, Proc. Acad. Nat. Sci., p. 172, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 293, t. 36, f. 122. Obs., ix. p. 115. C. Angulate, striate below the periphery. 16. P. Thorntonii,* Lea. Trypanostoma Thorntonii, Lea, Proc. Acad. Nat. Sci., p. 170, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 284, t. 36, f. 106. Obs., ix. p. 106. 17. P. infrafasciatum, Anthony. Melania infrafasciata, Anthony, Proc. Acad, Nat. Sci., p. 57, Feb., 1860. Bioney, Check List, No. 148. Brot. List, p. 30. Reeve, Monog. Melania, sp. 301. 18. P. Postellii,t Lea. Trypanostoma Postellii, Lea, Proc. Acad. Nat. Sci., p. 171, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 286, t. 36, f.110. Obs., ix. p. 108. 19. P. incurvum,{ Lea. Trypanostoma incurvum, Lea, Proc. Acad. Nat. Sci., p. 171, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 286, t. 36, f. 109. Obs., ix. p. 108. 20. Pp, Alabamense,§ Lea. Trypanostcma Alabamense, Lea, Proc. Acad. Nat. Sci., p. 171, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 288, t. 36, f. 113. Obs., ix. p. 110. 21. P. Florencense,|| Lea. Trypanostoma Florencense, Lea, Proc. Acad. Nat. Sci., p. 171, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 287, t. 36, f. 112. Obs. ix. p. 109. 22. P. canalitium, Lea, Trypanostoma canalitium, Lea, Proc. Acad. Nat. Sci., p. 175, 1862. Jour. Acad. Nat. Sci,, v. pt. 3, p. 292, t. 36, f. 121. Obs., ix. p. 114. 23. P. Clarkii,™ Lea. Trypanostoma Clarkii, Lea, Proc. Acad. Nat. Sci., p. 171, 1862. Jour. Acad. Nat Sci., v. pt. 3, p. 285, t. 36, f. 108. Obs., ix. p. 107. 24. P. Anthonyi, Lea. , Trypanostoma Anthonyi, Lea, Proc. Acad. Nat. Sci., p. 172, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 293, t. 36, f. 123. Obs., ix. p. 115. 25. P. prasinatum, Conrad. Melania prasinata,** Conrad, Am. Jour. Sci., Ist ser. xxv. p. 342, t. 1, f. 14, January, 1834. Jay, Cat., 4th Edit., p, 274. Binney, Check List, * This species is shorter in the canal, has broader bands, and wants the tubercles of montliferum, which it otherwise much resetnbles. } Distinguished from infrafasciatum by its whorls being more flattened, and by its narrow orm. | Differs from Postellii by its singularly incurved edge of the outer lip. Very distinct from the preceding two species in the more developed spire and cong if Inhabits the waters of Indiana, also. No. 20, (Alabamense) may prove to be the young of this species. { Doubtfully distinguished from canalitium by its broader proportions, better developed carina and recurved canal. ; ** The figure given by Mr. Conrad is not a good representation of this species. 25 No. 216. Brot, List, p. 33. Catlow, Conch. Nomenc,, p- 188. DeKay Moll. N. Y., p. 98. Reeve, Monog. Melania, sp- 403, Melania incrassata, Anthony, Ann. Lyc. N. Y., vi. p- 99, t. 2. f. 17, March, 1854, Binney, Check List, No. 144. Brot. List, p. 34. Trypanostoma Hartmanii, Lea, Proc. Acad. Nat. Sci., p- 173, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 270, t. 36, f. 80. Obs. 1x. P. 92. Trypanostoma Jayi, Lea, Proc. Acad. Nat. Sci., p- 173. 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 270, t. 36, f. 81. Obs., 1x. P- 92. 26. P. tortum, Lea. i Trypanostoma tortum, Lea, Proc. Acad. Nat. Sci., p. 174, 1262. Jour. Acad. Nat. Sci., v. pt. 3, p- 275, t. 36, f 89. Obs., ix. p. 97. 27. P.dignum, Lea. a Trypanostoma dignum, Lea, Proc. Acad. Nat. Sci., p. 273, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 350, t. 39, f. 219. Obs., ix. p. 172. D. Carinate, striate Pleurocere- 28. P. bicostatum, Anthony. Melania bicostata, Anthony, Proc. Acad. Nat. Sci., p- 56, February, 1860. Binney, Check List, No. 33. Brot. List, p.30. Reeve, Monog. Melania, sp. 246. Melania rigida,* Anthony, Proc. Acad. Nat. Sci., p. 62, February, 1860. Binney, Check List, No. 229. Reeve, Monog. Melania, sp. 270. 29. P. subulare, Lea. ‘ Melania subularis, Lea, Philos. Trans., iv. p. 100, t. 15, f. 30. Obs., 1. P- 110, t. 15, f. 30. Ravenel, Cat., p. 11. DeKay, Moll. N. Y., D- 92, t. 7, f.138. Wheatley, Cat. Shells U. S., p- 27. Jay, Cat-, 4th Edit., p. 275. Binney, Check List, No. 257. Brot, List, p.°35. Reeve, Monog. Melania, sp. 428. Whiteaves, Canad. Naturalist, viii. p. 102, April, 1863. 30. P. subuleforme, Lea. Trypanostoma subuleforme, Lea, Proc. Acad. Nat. Sci., p. 174, 1862. Jour. Acad. Nat. Sci., v- pt. 3, p- 289, t. 36, f. 116. Obs., ix. p. 111. 31. P. Henryanum,®* Lea. Trypanostoma Henryanum, Lea, Proc. Acad. Nat. Sci., p. 272, 1862. Jour. Acad. Nat. Sci., v- pt. 3, p- 351, t. 39, f. 222. Obs., ix. p- 173. 32. P. Lewisii,{ Lea. Trypanostoma Lewisii, Lea, Proc. Acad. Nat. Sci., p. 172, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p- 292, t. 36, f. 120. Obs., ix. p. 114. 33. P, annuliferum, Conrad. Melania annulifera, Conrad, New Fresh Water Shells, p. 51, t. 8, f. 2, 1834. Jay, Cat., 4th Edit., p. 272. Binney, Check List, No. 17. DeKay, Moll. N. Y., p- 94. Wheatley, Cat. Shells U. S., p. 24. Brot. List, p. 30. Catlow, Conch. Nomenc., p. 185. Reeve,* Monog. Melania, Sp- 308. Melania annulata, Conrad, Jay, Cat., 2d Edit., p. 455. Melania Ordiana, Lea, Philos. Proc., ii. p. 242, Dec., 1842. Philos. Trans. ix. p. 26. Obs., iv. p. 26. Wheatley, Cat. Shells U. S., p.- 26. Bin- ney, Check List, No. 191. Brot, List, p. 30. 34. P. Brumbyi, Lea. Melania Brumbyi, Lea, Philos. Trans., X. P- 298, t. 30, f. 5. Obs., V- D- * Juvenile shell, + Probably the young of subuleforme. iu may only be a striate form of elevatwm, Say. Mr. Reeve’s figure represents the variety described by Mr. Lea as Mel. Ordiana. 26 54. Binney, Check List, No. 40. Brot. List, p. 30. Reeve, Monog. Melania, sp. 277. 35. P. Currierianum, Lea. Trypanostoma Currierianum, Lea, Proc. Acad. Nat. Sci., p. 155, May, 1863. E. Plicate Pleuroceras. 36. P. Sycamorénse, Lea. Trypanostoma Scyamorénse, Proc. Acad. Nat. Sci., p. 175, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 283, t. 36, f. 104. Obs., ix. p. 105. 37. P. plicatum, Tryon. Pleurocera plicatum, Tryon, Proc. Acad. Nat. Sci., Oct., 1863. F. Smooth, Angulate Pleurocere. 38. P. elevatum,* Say. Melania clevata, Say, Jour. Acad. Nat. Sci., ii. p. 176, Jan’y, 1821. Bin- ney, Reprint, p. 70. Binney, Check List, No. 97. Jay, Cat., 4th Edit., p. 273. Lapham, Cat. Moll. Wisconsin, p. 368. DeKay, Moll. N. Y., p. 96. Wheatley, Cat. Shells U. S., p. 25. Catlow, Conch. Nomenc., p- 186. Brot. List, p. 30. Reeve, Monog. Melania, sp. 442. Ceriphasia elevata, Say, Chenu, Manuel, i. f. 1961. Melania elongata, Lea, Philos. Trans., iv. p. 121, t. 15, f. 29. Obs., i. p. 130. Troost, Cat. Binney, Check List, No. 99. Wheatley, Cat. Shells U.S., p. 25. Brot, List, p. 30. Ceriphasia elongata, Lea, Chenu, Manuél, i. f. 1959. 39. P. gradatum, Anthony. Melania gradata, Anthony, Ann. Lye. N. Y., vi. p. 112, t. 3, f. 12, March, 1854. Binney, Check List, No. 130. Brot. List,p. 30. Reeve, Monog. Melania, sp. 261. Melania eximia,t Anthony, Ann. Lye. N. Y., vi. p. 107, t. 3, f. 7, March, 1854. Binney, Check List, No. 106. Brot. List, p. 58. Reeve, Monog. Melania, sp. 408. Trypanostoma curtatum, Lea, Proc. Acad. Nat. Sci., p. 155, May, 1863. 40. P. aratum, Lea.t : Melania aratum, Lea, Philos. Proc., ii. p. 242, Dec., 1842. Philos. Trans., ix. p. 24. Obs., iv. p. 24. DeKay, Moll. N. Y., p, 98. Brot, List, p- 30. Melania exarata, Lea, Philos. Proc. ii. p. 14, Feb., 1841. Philos. Trans., Vili. p. 183, t. 6, f. 44. Obs., iii. p. 21. Troost, Cat. Binney, Check List, No. 101. Catlow, Conch. Nomenc., p. 186. 41. P. lativittatum, Lea. Trypanostoma lativittatum, Lea, Proc. Acad. Nat. Sci., p. 273, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 352, t. 39, f. 223. Obs., ix. p. 174. 4]1,a. P. strictum, Lea.§ Trypanostoma strictum, Lea, Proc. Acad. Nat. Sci., p. 272, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 352, t. 39, f. 224. Obs., ix. p. 174. 42. P. modestum, Lea. p Io modesta, Lea, Proc. Acad. Nat. Sci., p. 394, 1861. Jour. Acad. Nat. Sci., v. pt. 3, p. 348, t. 39, f. 216. Obs., ix. p. 170. * Lewisit may prove to be a variety of this species. + Juvenile shell. = Preceding? P. lativittatum has a line below the angle of the periphery, which this species has not. 27 43. P. Leaii, Tryon.* Io viridula, Lea, Proc. Acad. Nat. Sci., p. 394, 1861. Jour. Acad. Nat. Sci., v. pt. 3, p. 349, t. 39, f. 218. Obs., ix. p. 171. 44. P. fastigiatum, Anthony. Melania fastigiata, Anthony, Aun. N. Y. Lyc., vi. p. 113, t. 3, f. 13, March, 1854. Binney, Check List, No. 108. Brot. List, p. 30. Reeve, Monog. Melania, sp. 302. 45. P. Tuomeyi, Lea. Trypanostoma Tuomeyi, Lea, Proc. Acad. Nat. Sci., p. 171, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 287, t. 36, f. 111. Obs., ix. p. 109. 46. P.gracile, Lea, To gracilis, Lea, Proc. Acad. Nat. Sci., p. 394, 1861. Jour. Acad. Nat. Sci., Vv. pt. 3, p. 349; t. 39, f.. 217. | Obs., ix. p..171. 47. P. Spillmanii, Lea. Trypanostoma Spillmanii, Lea, Proc, Acad. Nat. Sci., p. 173, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 271, t. 36, f. 82. Obs., ix. p. 86. 48. P. planogyrum, Anthony. Melania planogyra, Anthony, Ann. Lyc. N.Y., vi. p. 111, t. 3, f. 11, March, 1854. Binney, Check List, No. 207. Brot, List, p. 30. Reeve, Monog. Melania, sp. 382. 49. P. pyrenellum, Conrad. Melania pyrenella, Conrad, New Fresh Water Shells, p. 52, t. 8, f. 5, 1834. DeKay, Moll. N. Y., p. 99. Wheatley, Cat. Shells U. 5., p. 26. Bin- ney, Check List, No. 226. Brot, List, p. 30. Reeve, Monog. Melania, sp. 303. 50. P. Conradi,f Tryon. 51. P. regulare, Lea. Melania regularis, Lea, Philos. Proc., ii. p. 12, Feb., 1841. Philos. Trans., Vili. p. 170, t. 5, f. 16. Obs., iii. p. 8. DeKay, Moll. N. Y., p. 94. Higgins, Cat. Troost, Cat. Jay, Cat., 4th Edit., p. 274. Wheatley, Cat. Shells U. S., p. 26. Binney, Check List, No. 227. Catlow, Conch. Nomenc., p. 188. Brot, List, p. 30. Ceriphasia regularis, Lea, Chenu, Manuél, i. f. 1956. 52. P. validum, Anthony. Melania valida, Anthony, Proc. Acad. Nat. Sci., p. 59, Feb., 1860. Bin- ney, Check List, No. 282. Brot, List, p. 33. Reeve, Monog. Melania, sp. 317. G. Smooth species, not angulated. 53. P. glandulum, Anthony. Melania glandula, Anthony, Proc. Acad. Nat. Sci., p. 60, Feb., 1860. Bin- ney, Check List, No. 124. Brot, List, p. 39. Reeve, Monog. Melania, sp. 393. Melania glans, Anthony, Ann. N. Y. Lyc., vi. p. 123, t. 3, f. 23. March, 1354. 54. P. Christyi,{} Lea. * The name viridula being preoccupied by Mr. Anthony,I gladly avail myself of theopportu- nity to dedicate this species to a gentleman who, by his immense labors pursued during a period of nearly forty years, with their splendid results, has done more for the science of Conchology, than any other American Naturalist. 7 This name is proposed for a long slender species, with flattened whorls and brown color, which Mr. Anthony has extensively distributed as pyrenellum, Conrad. Mr. Lea has regarded it as doubtfully identical with his elongatum. { Distinguished from labiatwm principally by its more ponderous, flattened volutions. 28 Trypanostoma Christyi, Lea, Proc..Acad. Nat. Sci., p. 173, 1862. Jour. Acad. Nat. Sci., v. pt. 3, 272, t. 36, f. 83. Obs., ix. p. 94. 55. P. labiatum,* Lea. Trypanostoma labiatum, Lea, Proc. Acad. Nat. Sci., p. 173, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 272, t. 36, f. 84. Obs., ix. p. 94. Trypanostoma pallidum, Lea, Proc. Acad. Nat. Sci., p. 174, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 275, t. 36, f. 90. Obs., ix. p. 97. 56. P. neglectum, Anthony. Melania neglecta, Anthony, Ann. Lyc. N. Y., p. 128, t.3,f. 29, March, 1854. Binney, Check List, No. 173. Brot. List, p. 34. Currier, Shells of Grand River Valley, Mich., 1859. Reeve, Monog. Melania, sp. 247. 57. P. vestitum, Conrad. ' Melania vestita, Conrad, New Fresh Water Shells, p. 57, t. 8, f. 12, 1834. DeKay, Moll. N. Y., p. 101. Wheatley, Cat. Shells U.S., p. 27. Bin- eM ore List, No. 287. Brot. List, p. 31. Reeve, Monog. Melania, sp. 322. Melania mucronata,t Lea, Proc. Acad. Nat. Sci., p. 119, 1861. Trypanostoma mucronatum, Lea, Jour. Acad. Nat. Sci., v. pt. 3, p. 277, t. 36, f. 93. Obs., ix. p. 99. 58. P. strigosum, Lea. Melania strigosa, Lea, Philos. Proc., ii. p. 13, Feb., 1841. Philos. Trans., Vili. p. 175, t. 5, f. 24. Obs., ii, p. 131. DeKay, Moll, N; Y= ps 9h¢ Troost, Cat. Binney, Check List, No. 250. Wheatley, Cat. Shells U. 8., p. 27. Catlow, Conch. Nomenc., p.188. Brot. List, p. 38. Reeve, Monog. Melania, sp. 320. 59. P. tenebrocinctum, Anthony. Melania tenebrocincta, Anthony, Proc. Acad. Nat. Sci., p. 58, Feb., 1860, Binney, Check List, No. 266. Brot. List, p. 31. Reeve, Monog. Melania, sp. 271. Trypanostoma parvum, Lea, Proc. Acad. Nat. Sci., p. 174, 1862. Jour. Acad. Nat. Sci., v. pt, 3, p. 276, t. 36, f. 91. Obs., ix. p. 98. 60. P. Vanuxemii, Lea. Trypanostoma Vanuxemii, Lea, Proc. Acad. Nat Sci., p. 175, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 280, t. 36, f. 98. Obs. ix. p. 102. 61. P. Chakasahaense, Lea. Trypanostoma Chakasahaense, Lea, Proc. Acad. Nat. Sci. p. 175, 1862. Jour. Acad. Nat. Sci., v., pt. 3, p. 280, t. 36, f. 99. March, 1863. Obs. ix. p. 102. 62. P. Knoxense, Lea. Trypanostoma Knoxense, Lea, Proc. Acad. Nat. Sci., p. 175, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 281, t. 36, f. 101. Obs. ix., p, 103. 63. P. altipetum, Anthony. Melania altipeta, Anthony, Ann. N. Y. Lyc., vi. p. 87, t. 2, f. 5. Binney, Check List, No. 442. Brot. List, p. 34. Reeve, Monog. Mel., sp. 280. 64. P.hastatum, Anthony. Melania hastata, Anthony, Ann. N. Y. Lye,, vi. p. 85, t. 2, f.3, March, 1854. Binney, Check List, No. 136. Brot. List, p. 31. Reeve, Monog. Mel., sp. 394. * Larger than neglectum, Anth., also more convex, lighter in color and differing in the form of the canal. The typical pallidum in Mr. Lea’s collections appears distinct. but I have seen numer- ous specimens collected in different parts of Ohio which connect the two species. + Having seen author’s types of vestitum, I have no doubt that mucronatum is the same species. Mr. Lea’s description refers to the shell when not fully grown; it is curious that in his description he mentions six whorls, and in his “ Remarks’ he gives it eight, while his figure exhibits ten. 29 65. P. Lyonii, Lea. Trypanostoma Lyonii, Lea, Proc. Acad. Nat. Sci., p. 155, May, 1863. 66. P. viridulum, Anthony. Melania viridula, Anthony, Ann. Lyc. N. Y., vi. p. 84, t. 2, f. 2, March, 1854. Binney, Check List, No. 293. Brot. List, p. 31. Reeve, Monog. Mel., sp. 243. 67. P. unciale, Haldeman. Melania uncialis, Hald., Monog. Limniades, No. 4, p. 3 of Cover, Oct. 5, 1841. Jay, Cat. 4th Edit., p. 275. Binney, Check List, No. 279. Brot. List, p. 837. Reeve, Monog. Mel. sp. 435. 68. P. sugillatum,* Reeve, Melania sugillata, Reeve, Monog. Mel., sp. 319, September, 1860. Brot. List, p. 31. 69. P. striatum, Lea. Trypanostoma striatum, Lea, Proc. Acad. Nat. Sci., p. 173, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 294, t. 36, f. 124. Obs. ix., p. 116. Trypanostoma rostellatum, Lea, Proc. Acad. Nat. Sci., p. 272, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 353, t. 39, f. 225. Obs. ix., p. 175. 70. P.Knoxvillense,f Lea. Trypanostoma Knoxvillense, Lea, Proc, Acad. Nat. Sci., p. 173, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 274, t. 36, f. 87. Obs. ix., p. 96. 71. P. Whitei, Lea. Trypanostoma Whitei, Lea, Proc. Acad. Nat. Sci., p. 173, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 272, t. 36, f. 85; Obs. ix., p. 95. 72. Ppattenuatum, Lea. Trypanostoma attenuatum, Lea, Proc. Acad. Nat. Sci., p. 174, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 274, t. 36, f. 88. Obs. ix., p. 96. 73. P. Est abrookii, Lea. Trypanostoma Estabrookii, Lea, Proc. Acad. Nat, Sci., p. 173, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 273, t. 36, f. 86. Obs. ix., p. 95. 74. P.modestum, Lea. Trypanostoma modestum, Lea, Proc. Acad. Nat, Sci., p. 174, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 276, t. 36, f..92. Obs. ix., p. 98. 75. P. luteum, Lea. Trypanostoma luteum, Lea, Proc. Acad. Nat. Sci., p. 273, 1863. Jour. Acad. Nat. Sci., v. pt. 3. p. 350, t. 39, f. 220. Obs. ix., p. 172. Trypanostoma Carolinense, Lea, Proc. Acad. Nat. Sci., p. 273, 1862. Acad. Nat. Sci., v. pt. 3, p. 351, t. 39, f. 221. Obs. ix., p. 173. 76. P.curvatum, Lea. Melania curvata, Lea, Philos. Proc. ii., p. 243. Philos. Trans. ix., p. 28. Obs, ix., p. 28. Wheatley, Cat. Shells U. S., p. 25. Brot, List, p. 30. Binney, Check List, No. 81. 77. P. simplex, Lea. Trypanostoma simplex, Lea, Proc. Acad. Nat. Sci.. p. 174, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 277, t. 36, f. 94. Obs. ix., p. 99. 78. P. bivittatum, Lea. Trypanostoma bivittatum, Lea, Proc. Acad. Nat. Sci., p. 175, 1862. Jour. Acad. Nat. Sci. v. pt. 3, p. 279, t. 36, f.97. Obs. ix., p. 101. Jour. * This shell appears to be very closely allied to wnciale, judging from the figure. + I doubt whether thie is distinet from Sycamorense. 30 79. P.trivittatum, Lea. Trypanostoma trivittatum, Lea, Proc. Acad. Nat. Sci., p. 175, 1862. Jour. Acad. Nat. Sci., v. pt.3, p. 282, t. 36, f. 102. Obs. ix., p. 104. 80. P. turgid um, Lea. Melania turgida, Lea, Philos. Proc. ii. p. 82, Oct. 1841. Philos. Trans. ix., p. 18. Wheatley, Cat. Shells U.8., p. 27. Binney, Check List, No. 278. Brot. List, p. 33. 81. P. minor, Lea. Trypanostoma minor, Lea, Proc. Acad. Nat. Sci., p. 174, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 278, t. 36, f.95. Obs. ix., p. 100. 82. P. pumilum, Lea. Trypanostoma pumilum, Lea, Proc. Acad. Nat. Sci., p. 174, 1862, Jour. Acad. Nat. Sci., v. pt. 3, p. 279, t. 36, f. 96. Obs. ix., p. 101. 83. P. Tennesseénse, Lea. Trypanostoma Tennesseénse, Lea, Proc. Acad. Nat. Sci., p. 175, 1862. Jour. Acad. Nat. Sci. v. pt. 3, p. 281, t. 37, f. 100. Obs. ix., p. 103. 84. P. trochulus, Lea. Trypanostoma trochulus, Lea, Proc. Acad. Nat. Sci., p. 175, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 282, t. 37, f. 103. Obs. ix., p. 104. Genus ANGITREMA, Haldeman. Angitrema, Haldeman, Cover of No. 2, Monog. Limniades, Jan. 1841. Potadoma, Swainson, sp. H. & A. Adams, Generai., p. 299, 1854. Glotella, Gray, Zool. Proc., pt. 15, p. 154, 1847. To, Lea, (sp.) H. & A. Adams, Genera, i. p. 299, 1854. Chenu, Man. Conchyl. i. p. 290, 1859. Reeve, Monog. Io, April, 1860. Brot, Syst. Cat. Mel., p. 29, 1862. Lithasia, Haldeman, sp. H. & A. Adams, Genera of Recent Mollusca, i. p. 308, 1854. Anculotus, Say, (sp.), Jay, Cat. Shells., 4th Edit., p. 276, 1850. Melania, (sp.) Authos. A. Body whorl with acoronal of tubercles. 1. A.geniculata, Haldeman. Lithasia geniculata, Haldeman, suppl. to No. 1, Monog: of Limniades, Oct. 1840. Binney, Check List, No. 299. Anculotus genicnlatus, Haldeman, Jay, Cat. Shells, 4th Edit., p. 276. Hanley, Conch. Mise. t. 5, f. 41. Reeve, Monog. Anculotus t.1, f. 7. Leptoxis geniculata, Haldeman, Brot, List, p. 24. Lithasia genicula, Lea, Wheatley, Cat. Shells U.5., p. 28. 2. A. Salebrosa, Conrad. Melania salebrosa, Conrad, New Fresh Water Shells, p. 51, t. 4, f. 5, 1834. Chenu, Reprint, p. 24, t. 4, f. 13. Dekay, Moll. N. Y., p. 100. Wheatley, Cat. Shells U. S., p. 26, Jay, Cat. 4th Edit., p. 274. Anculotus salebrosus, Conrad, Reeve, Monog. Ane. t. 1, f. 6, (bad figure.) Leptoxis salebrosa, Conrad, Brot. List, p. 25. Lithasia salebrosa, Conrad, Binney, Check List, No. 303. 3. A. subglobosa, Lea. Lithasia subglobosa, Lea, Proc. Acad. Nat. Sci., p. 55, Feb. 1861. Jour. Acad. Nat. Sci., v. pt. 3, p. 261, t. 35, f. 70. Obs. ix., p. 83. 4. A. Tuomeyi, Lea. Lithasia Tuomeyi, Lea, Proc. Acad. Nat. Sci., p. 55, Feb. 1861. Jour. Acad. Nat. Sci., v. pt. 3, t. 35, f. 68. Obs. ix., p. 81. Anculotus Florentianus, Lea, Reeve, Monog. Anc. t. 1, f. 4. 31 A. Body whorl encircled above the aperture by two rows of tubercles, of which the inferior one is most prominent. 5. A. Jayana, Lea. Melania Jayana, Philos. Proc. ii. p. 83. Philos. Trans. ix., p. 20. Obs. iv., p- 20. Wheatley, Cat. Shells U.S. p. 25. Jay, Cat. Shells, 4th Edit., p. 274. Binney, Check List, No. 154. To Jayana, Lea, Brot. List, p. 29. Melania robulina, Anthony, Bost. Proc. iii., p. 363, Dec. 1850. Binney, Check List, No. 230. Iorobulina, Anthony, Reeve, Monog. Io, species 15. C. Body whorl with a central row of tubercles. 6. A. rota, Reeve. Io rota, Reeve, Monog. Io, species 13, April, 1860. Brot, List, p. 29. 7. A. armigera, Say. Melania armigera, Say, Jour. Acad. Nat. Sci., Ist ser., ii. p. 178, Jan. 1821. Binney’s Reprint, p.71. Binney, Check List No. 21. Dekay, Moll. N. Y., p. 93. Jay, Cat. 4th Edit., p. 272. Troost. Cat. Wheatley, Cat. Shells, U.S., p. 24. Catlow, Conch. Nomence. p. 185. Hanley, Conch. Misc. Melania, t. 7, f, 60. Lo armigera, Say, Reeve, Monog. Io, fig. 11. 8. A. Duttoniana, Lea. Melania Duttoniana, Lea, Philos. Proc., ii. p.15. Philos. Trans., viii. p. 189, t. 6, f. 54. Obs. iii., p. 26. Catlow, Conch. Nomene. p. 156. Binney, Check List, No. 92. Jay, Cat. 4th Edit., p. 273. Io Duttoniana, Lea, Reeve, Monog. Io, fig. 9. Brot. List, p. 29. Io fasciolata, Reeve, Monog. Io, fig. 14. 9. A. stygia, Say. Melania stygia, Say, New Harmony Dissem., p. 261, Aug. 28, 1829. Reprint, p- 17. Binney’s Reprint, p. 142. Binney, Check List, No. 251. Wheatley, Cat. Shells U. S., p. 27. Jay, Cat, 4th Edit., p. 275. Dekay, Moll. N. Y., p. 93, Reeve, Monog. Mel. sp. 400. Brot. List, p. 40.- Melania tuberculata, Lea, Philos. Trans. iv., p. 101 t. 15, f. 31. Obs. i., p. 111. Dekay, Moll. N.Y., p. 93. Wheatley, Cat. Shells. U. S., p. 27. Binney, Check List, No. 277. Jay, Cat., 4th Edit., p. 275. Catlow, Conch. Nomeng, p. 189. Juga tuberculata, Lea, Chenu, Man. Conchyl. i. f. 2017. Melania Spixiana, Lea, Philos. Trans. vi. p. 93. Obs., v. p. 93. Melania nodata, Reeve, Monog. Mel. fig. 422. 10. A. funiculata, Reeve. Io funiculata, Reeve, Monog. Io, t. 2, f. 8. April, 1860. Brot, List, p. 29. 11. A. lima, Conrad. Melania lima, Conrad, New Fresh Water Shells, p. 54, t. 8, f. 8, 1834. . Chenu,. Reprint. Dekay, Moll., N. Y. p. 97. Wheatley, Cat. Shells U. S., p. 26. Jay, Cat. 4th Edit., p. 274. Catlow, Conch. Nomenc. p. 187. Brot, List, p. 33. Anculotus lima, Conrad, Reeve, Monog. Ane. t. 1, f. 1. Lithasia lima, Conrad, Binney, Check List, No. 300. 12. A. verrucosa, Rafinesque. Pleurocera verrucosa, Rafinesque, Annals of Nature, p. 11, 1820, Melania nupera, Say, New Harmony Dissem. p. 260. Amer. Conch. Pt. 1. t. 8, f. 1, 2. Binney’s Reprint, p. 157, t. 8. Chenu’s Reprint p. 16. t. 2, f.3. Dekay, Moll. N. Y. p. 97. Wheatley, Cat. Shells. U. S. p. 26. Brot. List, p. 40, Jay, Cat. Shells, 4th Edit. p. 274. 82 Anculotus nuperus, Say, Reeve, Monog. Anc. t. 1, f. 5. Lithasia nupera, Say, Binney, Check List, No. 302. Melanopsis semigranulosa, Deshayes, Encyc, Meth. Vers. ii. p. 438. Lam- arck, Anim. Sans. Vert. 2d edit. vii. p. 491. Sub-genus LITHASIA, Haldeman. Lithasia, Haldeman, Supp. to Monog. Limniades, No.1, Oct. 1840. Binney, Check List, Feb. 1860. Lea, Proc. Acad. Nat. Sciences, p. 54, Feb., 1861. Lea, Jour. Acad. Nat. Sci. v, p. 258 and 354, Mar. 1863. Observa- tions ix. p. 80 and 176. Lithasia, Haldeman, (part.), H. & A. Adams, Genera 1, p. 308, Feb. 1854. Lithasia, Lea, 1845, Chenu, Man. Conchyl. i. p. 296, 1859. Megara (parte) Adams, Genera, i. p. 306, Feb. 1854. Anculotus (part.) Say, Gray, Genera, Zool. Proc. pt. 15, p. 153, 1847. Reeve, Monog. Ancul., Apr., 1860. Anculosa and Melania (Sp.) Auct. (SPECIES. A. Shell large, oval, inflated. 1. L. fuliginosa, Lea. Melania fuliginosa, Lea, Philos. Proc. Philos. Trans. viii. p. 170, t. 5, f. 17. Obs. iii. p. 8. DeKay Moll. N. Y., p. 94. Troost, Cat. Wheatley, Cat. Shells, U.S. p. 25. Binney, Check List, No. 113. Catlow, Conch. Nomenc., p. 186. Brot. List, p. 40. Reeve, Monog. Melania, sp. 401. 2. L. Florentiana, Lea. Melania Florentiana, Lea, Philos. Proc. Philos. Trans. viii. p. 188, t. 6, f. 53. Obs. iii. p. 26. DeKay, Moll. N. Y., p. 99. Wheatley, Cat. Shells U.5., p. 25. Binney, Check List, No.110. Catlow, Conch. Nomenc., p. 186. Brot. List, p. 49. 3. L. venusta, * Lea. Melania venusta, Lea, Philos. Proc. Philos. Trans. viii. p. 187, t. 6, f. 52. Obs., iii. p. 25. DeKay, Moll. N. Y., p. 99. Jay, Cat. 4th Edit. p. 275. Troost, Cat. Wheatley, Cat. Shells U. 8., p. 27. Binney, Check List, No. 285. Catlow, Conch. Nomenc.p. 189. Brot. List, p. 40. Reeve, Monog. Mel., sp. 315. 4. L. dilatata, Lea. Lithasia dilatata, Lea, Proc. A. N., 8. p. 55, 1861. Jour. A. N.S., v. pt. 3, p- 260, t. 35, f. 69. Obs. ix. p. 82. 5. L. imperialis, Lea. Lithasia imperialis, Lea, Proc. A. N. 8., p. 55, 1861. Jour. A. N. S, v. pt. 3, p. 258, t. 35, f. 67. Obs. ix. p. 80. B.. Shell small, compact oval-elliptical. 6. L. vitatta, Lea. Lithasia vittata, Lea, Proc. A. N. §&., P: ibe 1862. Jour. A. N.S., v. pt. 3, p. 354, t. 35, f. 67. Obs. ix. p. 1 7. L. Showalterii, + Lea. Lithasia Showalterii, Lea, Proc. A. N.S., p. 188, 1850. Jour. A. N.S., v. pt. 3, p. 262, t. 35, f. 72. Obs. ix. p. 84. Melania Showaltertii, Lea, Reeve, Monog. sp. 423. Brot, List. p. 33. * More cylindrical, lighter colored, and more ponderous, though not so largeas ZL. Florentiana. + More cylindrical than vittata, with the aperture wider, NP more curved, and the spine shorter and more rapidly accuminate, 33 8 L. nuclea, Lea, Lithasia nuclea, Lea, Proc. A. N. 8., p. 188, 1860. Jour. A. N. 5., v. pt. 3, p- 263, t. 35, f. 73. Obs. ix. p. 85. Binney, Check List, No. 301, Melania nuclea, Lea, Reeve, Monog., sp. 423. Brot. List., p. 33. 9. L. nucleola, Anthony. Melania nuelcola, Anthony, Proc. Boston, Soc. N. H. iii. p. 360, Dec. 1850. Binney, Check List, No. 181. Brot, List, p. 40. Reeve, Monog. sp. 348. 10. L. undosa, Anthony, Mauna undosa, Anthonv, Aun. N.Y. Lye., vi. p. 124, t. 3, f. 25, Mar. 1854. Binney, Check List, No. 280. Brot. List p. 39. Reeve, Monog. Mel. sp. 447. Melania varinodosa, Anthony, MSS. Reeve, Monog. sp. 268. Brot. List, p. 39. 11. L. obovata, Say. Melania obovata, Say, New Harmony Dissem. No. 18, p. 276, Sept. 9, 1829. Reprint, p. 18, 1840. Biuney’s Repriut, p. 148. DeKay, Moll. N. Y. p- 98. Wheatley, Cat. Shells U. 8., p. 26. Catlow, Conch. Nomenc. p. 188. Jay, Cat., 2d Hdit. p. 45. Anculotus obovatus, Say, Jay, Cat. 4th Edit., page 276. Reeve, Monog. Mel. fig. 21. Leptoxis obovata, Say, Hald. Monog. Lept. p. 2, t. 1. f. 27—34. Binney, Check List, No. 374. Brot. List p. 25. Lithasia obovata, Say, Chenu, Manuel i. f. 2056—8. Anculosa obovita, Say, Wheatley, Cat. Shells U. S., p. 26. Melania Hildrethiana,* Lea, Philos. Proc. Philos. Trans. viii. p. 164, t. 5, f. 1. Obs. iii. p. 2, t. 5; £ 1. DeKay, Moll. N. Y., p. 92. | Wheat- ley, Cat. Shells U. S., p. 25. Binney, Check List, No. 138. Catlow, Conch. Nomenc. p. 187. 12. L. consanguinea, Anthony. Melania consanguinea, Authony, Aun. N. Y. Lye. vi. p. 125, t. 3, f..26, Mar. 1854. Binney, Check List, No. 66. Brot. List, p. 39. Anculotus consanguineus, Authony, Reeve, Monog, Ane. sp. 2. C. Sheli obliquely flattened. Melania compacta, Anthony, Ann. N. Y. Lye., vi. p. 122, t. 3, f. 22, Mar. 1854. Binney, Check List, No. 62. Brot, List, p. 32. Reeve, Monog. sp. 343. 14. L. obliqua, Anthony, MSS. D. Shell sub-eylindrical. 15. L. brevis, Lea. Melania brevis, Lea, Philos. Proc. ii. p. 242. Philos. Trans. ix. p. 26. Obs. iv. p. 26. Wheatley, Cat. Shells U. S. p. 24. Binney, Check List, No. 38. Brot, List, p. 32. Reeve, Monog. sp. 344. Anculosa solida, Lea, Phil. Proc. ii. p. 243. Philos. Trans. ix. p. 29, t. 9, f. 29. Obs. iv. p. 29. Wheatley, Cat. Shells U. S. p. 28. Leptoxis solida, Lea, Binney, Check List, No. 384. Brot, List, p. 25. Milania trivittata, Reeve, Monog. sp. 420. * Young Shell. 54 16. L. fusiformis, Lea. Lithasia fusiformis, Lea, Proc. A. N.S. p. 54, 1861. Jour. A. N. S., v. pt. 3. p- 261, t. 35, Fee ObSeiscapeuile 17. L. Downiei, Lea. Lithasia Downiei, Lea, Proc. A. N. §., p. 273, 1862. Jour. A. N. S., v. pt. 3, p. 354, t. 39, f. 227. Obs. ix. p, 176. Sub-Genus STREPHOBASIS, Lea. Strephobasis, Lea, Proce. Acad. Nat. Sci. p. 96, Apr. 1861. Jour. A. N. S., y. pt. 3, p. 264 and 355. Obs. ix. p. 86, 177. Megara, (sp.) H. & A. Adams, Genera i. p. 306, Feb. 1854. A. Shell ovate-conical. 1. Strephobasis curta, Haldeman, Melania curta, Haldeman, Monog. Limniades, No. 3, p. 3 of Cover. Bin- ney Check List, No. 80. Brot. List, p. 32. Reeve, Monog. sp. 345. Melania solida, Lea, Philos. Proc. iv. p. 9, f. 27. Obs. iv. p. 57. Binney, Check List, No. 245. Brot, List, p. 31. Reeve, Monog. Melania, f. 454, Strepholasis solida, Lea, Jour. = N. S., v. pt. 3, p. 266, t..35,f. 77. Obs. ix. p. 88. - Strephobasis, pumila, Lea. Melania pumila, Lea, Philos. Proc. iv. p. 166, Aug. 1845. Philos. Trans. x. p. 60, t. 9, f. 36. Obs. iv. p. 60. Binney, Check List, No. 223. Brot: List. p. 33. Reeve, Monog. sp. 446. bo ist) . Strepho. carinata, Lea. Str:phobasis carinata, Lea, Proc. A. N. S. p. 273, 1862. Jour. A. N. S., v. Tio By 1b COBH WA BL Tk "228. Obs. ix. De Lilt B. Shell cylindrical. 4. Strepho. olivaria, Lea. Strephobasis olivaria, Lea, Proc. A. N. 8., p. 273, 1862. Jour. A. N.S., V. pt.8, De 006; t.00) 1.229. Obssixop: 17s: 5. Strepho. plena, Anthony. Melania plena, Anthony, Ann. Lye. N. H. New York, vi. p. 121, t. 3, f. 21, Mar. 1%54. Binney, Check List, No. 210. Brot, List, p. 33. Reeve, Monog. Mel. sp. 450. Strephobasis Spillmanii, Lea, Proc. A. N. 8., p. 96, 1861 Jour, A. N. 5. v- pt. 3, p. 264, t. 35, f. 74. Obs. ix. p. 86. 6. Strepho. cornea, Lea. Strephobasis cornea, lea, Proc. A. N.§., p. 96, 1861. Jour. A. N.5., v. pt. Dp pPei2GOr is oO. OM Ops. Ixaipao 7 7. Strepho. corpulenta, Anthony. Me'ania corpulenta, Anthony, Aun. Lyc. N. H., vi. p. 127, t. 3, f. 28, Mar. 1854. Binney, Check List, No. 70. Brot. Lit, p. 32. 8. Strepho. bite niata, Conr. Melania biteniata, Conrad, New Fresh Water Shells, p. 52, t. 8, f. 6, 1834. DeKay, Moll. N. Y., p. 94. Wheatley, Cat. Shells U. S., p. 24. Bin- ney, Check List, No. 34. Brot, List, p. 32. Hanley, Conch. Misc. t. Seiaios Anculotus biieniatus, Conrad, Reeve, Monog. Anculotus t. 3, f. 25. Strephobasis Clarkii, Lea, Proc. A. N.8., p. 66, 1861. Jour. A. N.5., v. pt. 3, p. 265,'t. 35, f. 76. Obs. ix. p..87- 35 Synonymy of the Species of STREPOMATID#, a Family of Fluviatils Mollusca inhabiting North America, Part 2. BY GEORGE W. TRYON, JR. Goniobasie Section. Genus GONIOBASIS, Lea. Goniobasis, Lea, Proc. Acad. Nat. Sci. p 262, May, 1862. Journ. Acad. Nat. Sei, v. pt. 3, p. 217, March, 1865. Obs. ix. p. 39. Ceriphasia, Swainson, (sp.) H. and A. Adams, Generai. p. 298, Feb. 1854. Chenu, Man. de Conchyl. i. p. 290, 1859. Pachycheilus, Lea, (sp.) H. and A. Adams, Genera i. p. 298, Feb. 1854. Potadoma, Swainson, (sp.) H. and A. Adams, Genera i. p. 299, Feb. 1854. Chenu, Man. de Conchyl. i. p. 290, 1859. Elimia, (sp.) H. and A. Adams, Genera i. p. 300, Feb. 1854. Chenu, Man. de Conchyl. i. p. 290, 1859. Melasma, (sp.) H. and A. Adams, Genera i. p. 300, Feb. 1854. Chenu, Man. de Conchyl. i. p. 292, 1859. Hemisinus, Swainson, (sp.) H. and A. Adams, Genera i. p. 302, Feb. 1854. Juga, (sp.) H. and A. Adams, Genera i. p. 304, Fel. 1854. Chenu, Man. de Conchyl. i. p. 293, 1859. Megara, (sp.) H. and A. Adams, Genera i. p. 306, Feb. 1854. Chenu, Man. de Conchyl. i. p. 293, 1859. Pleurocera, Rafinesque, Haldeman, Proc. Acad. Nat. Sci. p. 274, 1863. Melania, (sp.) Auct.* SPECIES. A. Shell spirally ridged. 1. G. procissa, Anthony.t Melania procissa, Anthony, Ann. Lyc. Nat. Hist. N. Y. vi. p. 109, t. 3, £.9, March, 1854. Binney, Check List, No. 218. Brot, List, p. 59. Reeve, Monog. Melania, sp. 342. B. Shell tuberculate or nodulous. 2. G@. gratiosa, Lea. Melania gratiosa, Lea, Proc. Acad. Nat. Sci. p, 122, May, 1861. Goniobasis gratiosa, Lea, Jour. Acad. Nat. Sci. v. pt. 3, p. 241, t. 35, f. 43, March, 1863. Obs. ix. p. 63. 2a. G. lachryma, Anthony.} Melania lachryma, Anthony, Reeve, Monog. Melania, sp. 473, May, 1861. Brot, List, p. 32. 3. G gibberosa, Lea. Goniobasis gibberosa, Lea, Proc. Acad. Nat. Sci. p. 266, 1862. Jour. Acad. Nat. Sci. v. pt. 3, p. 312, t. 37, f. 155, March, 1863. Obs. ix. p. 134, i 37, 1h. * Mr. Lea is the first naturalist who has properly defined this genus, and his name Gontobasis must therefore stand, in preference to any of the prior names given to artificial sections by the Messrs. Adams. Of course these gentlemen are wrong in including species of this genus in the genera Pachy- cheilus, Ceriphasia, Potudoma and Hemistnus, which are all intended to embrace very different groups of species. Prof. Haldeman is also mistaken in placing here the Pleurocera of Rafinesque, a genus which undoubtedly = Trypanostoma, Lea. } This may be only an elevated form of Anculosa canaliferc, Anthony. t This species and the preceding (gratiosa) are identical. Both descriptions bear the same date of publication, and I am therefore unable to decide which has priority, 4 36 4. G. nubila, Lea.* Melania nubila, Lea, Proc. Acad. Nat. Sci. p. 118, 1861. Goniobasis nubila, Lea, Jour. Acad. Nat. Sci. v. pt. 3, p. 235, March, 1863. Obs. ix. p. 57. 5. G. varians, Lea.t Melania varians, Lea, Proc, Acad. Nat. Sci. p. 120, 1861. Goniobasis varians, Lea, Jour. Acad. Nat. Sci. v. pt. 3, p. 219, t. 34, f. 2, March, 1863. Obs. ix. p. 41. 6. G. Hydeii, Conrad. me Melania Hydeii, Conrad, New Fresh-Water Shells, p. 50, t. 8, f. 1, 1834. Reeve, Monog. Melania, sp. 248. DeKay, Moll. N. York, p. 93. Wheat- ley, Cat. Shells U.S. p. 25. Binney, Check List, No. 141. Melania Hydei, Conrad, Jay, Cat. Shells, 4th edit. p. 273. Brot, List, p. 32. Hanley, Conch. Mise. t. 1, f. 3. Melania Hydii, Conrad, Catlow, Conch. Nomene. p. 187. 7. G. decorata, Anthony. Melania decorata, Anthony, Proc. Acad. Nat. Sci. p. 55, Feb. 1860. Reeve, Monog. Melania, sp. 251. Binney, Check List, No. 86. Brot, List, p. 32. Goniobasis Tryoniana,t Lea, Proc. Acad. Nat. Sci. p. 272, 1862. Jour. Acad. Nat. Sci. v. pt. 3, p. 342, t. 38, f. 207, March, 1863. Obs. ix. p. 164, +. 38, f. 207. Goniobasis granata, Lea, Proc. Acad. Nat. Sci. p. 272, 1862. Jour. Acad. Nat. Sci. v. pt. 3, p. 342, t. 38, f. 209, March, 1863. Obs. ix. p. 165. 5. G. celatura, Conrad. Melania celatura, Conrad, Proc. Acad. Nat. Sci. iv. p. 154, Feb. 1849. Journ. Acad. Nat. Sci. i. pt. 4, p. 278, t. 38, f. 3, Jan. 1850. Binney, Check List, No. 58. Brot, List, p. 32. Reeve, Monog. Melania, sp. 245. Goniobasis Stewardsoniana,§ Lea, Proc. Acad. Nat. Sci. p. 272, 1862. Jour. Acad. Nat. Sci. v. pt. 3, p. 344, t. 38, f. 210, March, 1863. Obs. ix. p. 166. Goniobasis Tryoniana, Lea, Description in part. 9. G.occata, Hinds. Melania occata, Hinds, Ann. and Mag. Nat. Hist. xiv. p. 9. Zool. Voy. Sulphur. Mollusca, ii. p. 56, t. 15, f.5. Catlow, Conch. Nomence: p. 188. Brot, List, p. 34. Lea, Proc. Acad. Nat. Sci. p. 81, April, 1856. Reeve, Monog. Melania, sp. 267. Juga occata, Hinds, Chenu, Man. de Cohchyl. i. f. 2016. Melania Shastaensis,|| Lea, Reeve, Monog. Melania, sp. 318. 10. G. catenaria, Say. Melania catenaria, Say, Jour. Acad. Nat. Sci. ii. p. 379, Dec. 1822. Binney, Reprint, p. 111. Binney, Check List, No. 52. Reeve, Monog. Melania, sp. 336. DeKay, Moll. N. York, p. 93. Wheatley, Cat. Shells U. 5. p. 24. Gibbes, Rep’t. S. Carolina, p.19. Jay, Cat. 4th edit. p. 273. Catlow, Conch. Nomenc. p. 185. Brot, List, p. 34. * Closely allied to G. oliva, Lea, but is larger, Jonger and tuberculate. + Nearly always tuberculate, and shouldered below the sutures. t G@. decorata is a young shell, and, as is usual in this group, is sharply angulated at the peri- plery. G.granata represents a half grown shell, and here the angle is almost obsolete, while @. Tryoniana is the mature form. The entire identity of these several descriptions is proved by a series of over two hundred specimens before me, Mr. Lea’s figure of Tryoniana belongs here, but his descriplion of that species is made to include the next species, cxlatura, Conr. The green varicty of granata is a she]l of much heavier texture, and may prove distinct. é Half grown shell of cxlatura. ‘ || The Shasiaensis of Mr. Lea is a very different shell, and certainly ought never to have been confounded with this species, which it does not resemble in any particular. 37 Melania sublirata,* Conrad, Jour. Acad. Nat. Sci. 2d ser. i. pt. 4, p. 277, t. 38, f. 1, Jan. 1850. Brot, List, p. 37. Reeve, Monog. Melania, sp. 339. Melania Floridensis,{ Reeve, Monog. Melania, sp. 334. Brot, List, p. 34. 11. G@. catenoides,f{ Lea. Melania catenaria, Lea, Proc. Philos. Soc. i. p, 289, Oct. 1840, (preoc.) Melania catenoides, Lea, Philos. Trans. viii. p. 228, t. 6, f. 60. Obs. iii. p- 66. DeKay, Moll. N. Y. p. 101. Wheatley, Cat. Shells U. 5. p. 24. Jay, Cat., 4th edit., p. 273. Binney, Check List, No. 53. Catlow, Conch. Nomenc. p. 185. Brot, List, p. 34. Reeve, Monog. Melania, sp. 298. Elimia catenoides, Lea, Chenu, Man. de Conchyl. i. f. 1982. 12. G. Etowahensis, Lea.§ F Melania Etowahensis, Lea, Reeve, Monog. Mel. sp. 426, May, 1861. Brot, List, p. - Goniobasis Canbyi, Lea, Proc. Acad. Nat. Sci. p. 271, 1862. Jour. Acad. Nat. Sci. v. pt. 3, p. 340, t. 38, f. 204, March, 1863. Obs. ix. p. 162. 13. G. Hallenbeckii, Lea.|| Goniobasis Hallenbeckii, Lea, Proc. Acad. Nat. Sci. p. 271, 1862. Jour. Acad. Nat. Sci. v. pt. 3, p. 339, t. 38, f. 203, March, 1863. Obs., ix. p. 161. Melania Hallenbeckii, Lea, Reeve, Monog. Melania, sp. 332. 14. G. Boy kiniana, Lea. Melania Boykiniana, Lea, Proc. Philos. Soc. i. p. 289, Oct. 1840. Philos. Trans. viii. p. 228, t. 6, f. 59. Obs. iii. p. 66. DeKay, Moll. N. Y., p. 100. Wheatley, Cat. Shells U. S. p. 24. Reeve, Monog. Melania, sp. 77. Jay, Cat. Shells, 4th edit. p. 273. Binney, Check List, No. 37. Catlow, Conch. Nomence., p. 185. Brot, List, p. 34. Elimia Boykiniana, Lea, Chenu, Man. de Conchyl. i. f. 1978. 15. G. Bentoniensis, Lea.T Goniobasis Bentoniensis, Lea, Proc. Acad. Nat. Sci. p. 271, 1862. Jour. Acad. Nat. Sci. v. pt. 3, p. 336, t. 38, f. 198, March, 1863. Obs. ix. p- 158. 16. G. papillosa, Anthony. Melania papillosa, Anthony, Reeve, Monog. Melania, sp. 467, May, 1861. Brot, List, p. 34. Goniobasis Downieana, Lea, Proc. Acad. Nat. Sci. p. 272, 1862. Jour. Acad. Nat. Sci. v. pt. 3, p. 341, t. 38, f. 206, March, 1863. Obs. ix. p. 163. 17. G. Couperii, Lea. Goniobasis Couperii, Lea, Proc. Acad. Nat. Sci. p. 271, 1862. Jour. Acad. Nat. Sci. v. pt. 3, p. 341, t. 38, f. 205, March, 1863. Obs. ix. p. 163. 18. G. inclinans, Lea. Goniobasis inclinans, Lea, Proc. Acad. Nat. Sci. p. 267, 1862. Jour. Acad. Nat. Sci. v. pt. 3, p. 318, t. 37, f. 166, March, 1863. Obs. ix. p. 140. * + L have seen several author’s examples of catenaria, and they uniformly represent shells not adult. As I have not seen specimens of sublirata anil Floridensis, I rely on the figures and des- criptions only, in considering them to be the adults of the same species. tf G. catenoides may prove to be a variety only of catenaria and Lat first un‘ted them,but I have recently come to the conclusion that they are distinct species, though nearly allied. @ I presume it was Mr. iea’s first intention to describe this species under the name of Htowah- ensis, as a specimen is before me which that gentlemen sent to Mr. Anthony under that name. int ver} specimen was sent to Mr. Reeve and published by him, prior to the publication of Cun- i by Mr. Lea, It is extremely difficult to distinguish this species from varieties of papillosa, Anth. |. Dr. Brot considers this a synonym of Boykiniana, but it is very different. | Doubtfully distinct from papillosa, Anth. 38 19. G. Postellii, Lea. Melania Postellii, Lea, Proc. Acad. Nat. Sci. p. 166, July, 1858. Binney, Check List, No. 214. Brot, List, p. 34. Melania Portellii, Lea, Reeve, Monog. Melania, sp. 427. Goniobasis Postellii, Lea, Jour. Acad. Nat. Sci., v. pt. 3, p. 343, t. 38, f. 208, March, 1863. Obs. ix. p. 165. 20. G. arachnoidea, Anthony. Melania arachnoidea, Anthony, Ann. Lyc. Nat. Hist. N. Y., vi. p. 95, t. 2, f. 14, March, 1854. Binney, Check List, No. 19. Brot, List, p. 34. Reeve, Monog. Melania, sp. 83. Melania intertexta, Anthony,* Proc. Acad. Nat. Sci., p. 62, February, 1860. Binney, Check List, No. 151. Brot, List, p. 34. Reeve, Monog. Me- lani, sp. 296. 21. G. Conradi, Brot.t Melania Conradi, Brot, List, p. 36. Melania symmetrica, Conrad, Proc. Acad. Nat. Sci., iv. p. 155, Feb., 1849. Journ. Acad. Nat. Sci., i. pt. 4, p. 278, t. 38, f. 5, Jan., 1850. Binney, Check List, No. 260. 22. G. carinifera, Lam. Melania carinifera, Lamarck, Anim. sans Vert. Deshayes, Anim. sans Vert., 2d edit., viii. p. 433. Wheatley, Cat. Shells U.S., p. 24. Bin- ney, Check List, No. 48. Catlow, Conch. Nomenc., p. 185. Brot, List, p. 36. Reeve, Monog. Melania, sp, 273. Melania bella,t Conrad, New Fresh-Water Shells, Appendix, p. 6, t. 9, f. 4, 1834. Binney, Check List, No. 29. Brot, List, p. 36. Reeve, Monog. Melania, sp. 269. Melania perangulata, Conrad, Proc. Acad. Nat. Sci., iv p. 154, Feb., 1849. Jour. Acad. Nat. Sci., i. pt. 4, p. 278, t. 38, f. 6. Binney, Check List, No. 199. Brot, List, p. 36. Reeve, Monog. Melania, sp. 285. Melania percarinata, Conrad. Proc. Acad. Nat. Sci., iv. p. 155, Feb., 1849. Jour. Acad. Nat. Sci., 2d ser., i. pt. 4, p. 278, t. 38, £10. Binney, Check List, No. 200. Brot, List, p. 36. Melania nebulosa, Conrad, Proc. Acad. Nat. Sci., iv. p. 155, Feb., 1849, Jour. Acad. Nat. Sci., i. pt. 4, p. 278, t. 38, f. 9. Binney, Check List, No. 172. Brot, List, p. 36. Melania bella-crenata, Haldeman, Monog. Limniades, No. 4, p. 3 of cover, Oct. 5, 1841. Jay, Cat., 4th ed., p. 273. Binney, Check List, No. 30. Brot, List, p. 36. Melania monilifera, Anthony, Jay, Cat., 4th ed., p. 474. C. Shell plicate. 23. G. obesa, Anthony. Melania obesa, Anthony, Reeve, Monog. Melania, sp. 469, May, 1861. Brot, List, p. 33. 24. G. blanda, Lea.§ " Melania blanda, Lea, Proc. Acad. Nat. Sci., p. 122, 1861. Goniobasis blanda, Lea, Jour. Acad. Nat. Sci., v. pt. 3, p. 242, t. 35, f. 44, March, 1863. Obs. ix. p. 64, t. 35, f. 44. * THalf-grown shell. ie i : + Dr. Brot proposed the name Conradi for this species, as symmetrica is preoccupied by Prof. Haldeman. I doubt whether it is distinct from G. carinifera, Lam. : rom { That all the species here quoted are synonyms of carinifera does not admit of doubt. 8 species is rather a variable one in respect of proportions and ornamentation. Dade 2 The name of this species must be changed because preoccupied by Mr. Lea himself, 39 25. G. substricta, Haldeman.* Melania substricta, Haldeman, Monog. Limniades, vii. p. 4 of cover, Jany., 1844. Wheatley, Cat. Shells U.S., p. 27. Binney, Check List, No. 256. Brot, List, p, 36. 26. G. aequalis, Haldeman.t Melania wequalis, Haldeman, Monog. Limniades, No. 4, p. 3 of cover, Oct. 5, 1841. Jay, Cat , 4th ed., p. 272. Binney, Check List, No. 7. 27. G. semigradata, Reeve. Malania semigradata, Reeve, Monog. Melania, sp. 472, May, 1861. Brot, List, p. 33. 28. G. carinocostata,{ Lea. Melania carinocostata, Lea, Philos. Proc., iv. p. 165, 1845. Philos. Trans., x. p. 62, t.9, £40. Obs. iv.p. 62. Binney, Check List, No. 49. Brot, List, p. 35, Reeve, Monog. Melania, sp. 333. Goniobasis strenua, Lea, Proc. Acad. Nat. Sci., p. 267, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 316, t. 37, f. 161, March, 1863. Obs. ix. p. 138. Goniobasis Leidyana, Lea, Proc. Acad. Nat. Sci., p. 268, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 322, t. 38, f. 173, March, 1863. Obs. ix. p- 144. Melania scabrella, Anthony, Reeve, Monog. Melania, sp. 388. Melania scabriuscula, Brot, List, p. 36. 29. G. Lecontiana,§ Lea. Melania Lecontiana, Lea, Philos. Proc., ii. p. 18, Feb. 1841. Philos. Trans., viii. p. 177, t. 5, f. 29. Dekay, Moll. N. York, p. 96. Wheatley, Cat. Shells U.S8., p. 26. Brot, List, p. 35. Jay, Cat., 4th edit., p. 274. Binney, Check List, No. 160. Catlow, Conch. Nomenc., p. 187. Melasma Lecontiana, Lea, Chenu, Man. Conchyl., i. f. 2002. 30. G. cadus, Lea.|| Goniobasis cadus, Lea, Proc. Acad. Nat. Sci., p. 272, 1862. Jour. Aead. Nat. Sci., v. pt. 3, p. 345, t. 38, f. 211, March, 1863. Obs. ix. p. 167. 31. G. obtusa, Lea.T Melania obtusa, Lea, Philos. Proc., ii. tae 13, Feb., 1841. Philos. Trans., viii. p. 176, t. 5, f. 28. Obs. iii. p. 14. Dekay, Moll. New York, p. 96. Binney, Check List, No. 193. Troost, Cat. Shells Tennessee. Wheatley, Cat. Shells U. ’s., p. 26. Catlow, Conch. Nomenc., p. 188. Brot, List, p. 59. 32. G. amoena, Lea. Goniobasis amena, Lea, Proc. Acad. Nat. Sci., p. 268, 1862. Jour. Acad, Nat. Sci., v. pt. 3, p. 323, t. 38, f. 175, March, 1863. Obs. ix. p. 145, t. 38, f. 175. 33. G. Tuome yi, Lea. Goniobasis Tuomeyi, Lea, Proc. Acad. Nat. Sci., p. 266, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 311, t. 37, f. 153, March, 1863. Obs. ix. p. 133. * Somewhat like gracilis, Lea, but is a stouter, more ponderous species. } Allied to carinocostata, Lea, but in that species the plice are terminated by an acute angle or rib on the body whorl and the spire is angled or carinate. t A very variable species. The M. scabrella of Anthony is a half-grown shell; in which state the plicze and carinz are more distinct than in the adult form. Scabrella being preoccupied by an European author, M. Brot changed the name to scabriuscula. % Mr. Reeve’s figure 404 does not represent this species; it is nearer to decorata, Anthony. This shell is closely allied to cartnocostata and xqualis. {| Allied to G. obtusa, but appears to differ in not being so closely plicate as that species. It may possibly = Lccontiana. q Is this the young shell of cadus or carinocostata ? “40 34. G. Christyi, Lea. Goniobasis Christyi, Lea, Proc. Acad. Nat. Sci., p. 269, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 328, t. 38, f. 185, March, 1863. Obs. ix. p. 150. Goniobasis instabilis, Lea, Proc. Acad. Nat. Sci., p. 269, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 329, t. 38, f. 186, March, 1863. Obs. ix, p. 151. 35. G. interveniens, Lea.* Goniobasis interveniens, Lea, Proc. Acad. Nat. Sci., p. 268, 1862. Journ. Acad. Nat. Sci., v. pt. 3, p. 320, t. 38, f. 169, March, 1863. Obs. ix. p- 142. 36. G. olivella, Lea. Goniobasis olivella, Lea, Proceed. Acad. Nat. Sci., p. 269, 1862. Journ. Acad. Nat. Sci., v. pt. 3, p. 327, t. 38, f. 182, March, 1863. Obs. ix. p. 149. 37. G. interrupta, Haldeman. Melania interrupta, Haldeman, Supplement to No.1, Monog. Limniades, Oct. 1840. Wheatley, Cat. Shells U.S., p. 25. Jay, Cat., 4t edit., p. 274. Brot, List, p. 34. Reeve, Monog. Melania, sp. 398. Goniobasis ornatella, Lea, Proceed. Acad. Nat. Sci., p. 269, 1862. Journ. Pat Nat. Sci., v. pt. 3, p. 326, t. 38, f. 181, March, 1863. Obs. ix. p. 148. 38. G. crispa, Lea.f Goniobasis crispa, Lea, Proc. Acad. Nat. Sci., p. 269, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 326, t. 38, f. 180, March, 1863. Obs: ix. p, 148. 39. G. formosa, Conrad.{ Melania formosa, Conrad, New Fresh-Water Shells, Appendix, p. 5, t. 9, f. 3, 1834. Wheatley, Cat. Shells U. 8., p. 25. Binney, Check List, No. 112. Melania formosa, Anthony, Reeve, Monog. Melania, sp. 387. . Brot, List, p. 35. 40. G. mediocris, Lea. Goniobasis mediocris, Lea, Proceed. Acad. Nat. Sci., p. 269, 1862. Journ. Acad. Nat. Sci., v. pt. 3, p. 326, t. 38, f. 179, March, 1863. Obs. ix. p. 148. 41. G@ vesicula, Lea. Melania vesicula, Lea, Proc. Acad. Nat. Sci., p. 118, 1861. Goniobasis vesicula, Lea, Jour. Acad. Nat. Sci., v. pt. 3, p. 242, t. 35, f. 45, March, 1863. Obs. ix. p. 64. 42. G. Duttonii, Lea.§ Goniobasis Duttonii, Lea, Proceed. Acad. Nat. Sci., p. 266, 1862. Journ. Acad. Nat. Sci., v. pt. 3, p. 314, t. 37, f. 158, March, 1863. Obs. ix. p. 136. 43. G. laqueata, Say. Melania laqueata, Say, New Harmony Disseminator, p. 275, September, 1829. Say’s Reprint, p. 17. American Conchology, No. 5, t. 47, f. 1. Binney’s edition, pp. 143 and 200. Binney, Check List, No. 158. De- Kay, Moll. New York, p. 97. Wheatley, Cat. Shells U.S., p. 25. Jay, Cat., 4th ed., p. 274. Reeve, Monog. Melania, sp. 281, 288? Brot, List, p. 35. Catlow, Conch. Nomence., p. 187. EAS I, Rg SP EN A + REE 8S O20) * Very like Curreyana, Lea, in the plice, but differs in form. + More convex and with more regular strie than G. nassula, Conrad. + Close to G. nassula, Conrad, but is striate, and the aperture is more rounded. ¢ Differs from G@. Tuomey?, Lea, in the form of the aperture. The specimens before me are not all two-banded, some of them being without bands, and of a light yellowish color. 41 Melania monozonalis, * Lea, Philos. Proc., ii. p. 13, February, 1841. Philos. Trans., viii. p. 178, t. 6, f. 31. Obs. iii. p. 16. DeKay, Moll. New York, p. 96. Binney, Check List, No. 168. Troost, Cat. Shells Ten- nessee. Wheatley, Cat. Shells U.S., p. 26. Catlow, Conch. Nomenc., p- 187. Brot, List, p. 40. 44. G. Pybasii, Lea. Goniobasis Pybasii, Lea, Proc. Acad. Nat. Sci., p. 266, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 313, t. 37, f. 157, March, 1863. Obs., ix. p. 135, fri Digit) 157. 45. G. induta, Lea. Goniobasis induta, Lea, Proc. Acad. Nat. Sci., p. 267, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 319, t. 37, f. 166, March, 1863. Obs., ix. p. 141. 46. G. véersipellis,t Anthony. Melania versipellis, Anthony, Proc. Acad. Nat. Sci., p. 60, February, 1860. Binney, Check List, No. 286. Brot, List, p. 59. Reeve, Monog. Me- lania, sp. 436. 47. G. gracilis,} Lea. Melania gracilis, Lea, Philos. Proc., ii. p. 12, Feb. 1841. Philos. Trans., viii. p. 168, t. 5, f. 11. Obs. iii. p. 6. DeKay, Moll. N. York, p. 94. Troost, Cat. Shells Tenn. Wheatley, Cat. Shells U.S., p. 25. Bin- ney, Check List, No. 128. Catlow, Conch. Nomenc., p. 187. Brot, List, p. 38. Potadoma gracilis, Lea, Chenu, Manuel de Conchyl., i. f. 1968. 48. G. paucicosta, Anthony. Melania paucicosia, Anthony, Proc. Acad. Nat. Sci., p. 57, February, 1860. Binney, Check List, No. 195. Brot, List, p. 36. Reeve, Monog. Me- lania, sp. 255. 49. G. tenebrosa, Lea. Melania tenebrosa, Lea, Philos. Proc., ii. p. 13, February, 1841. Philos, ‘ Trans., viii, p. 176, t. 5, f. 26. Obs. ili. p. 14. DeKay, Moll. N. Y., p- 95. Troost, Cat. Shells Tepn. Wheatley, Cat. Shells U. S., p. 27. Binney, Check List, No. 267. Catlow, Conch. Nomenc., p. 189. Reeve, Monog. Melania, sp. 443. Brot, List, p. 39. 50. G. coracina, Anthony. Melania coracina, Anthony, Bost. Proc., iii. p. 361, Dec., 1850. Binney, Check List, No. 67. Brot, List, p. 58. Melania Sellersiana, Lea, Philos. Trans., x. p. 299, t. 30, f. 8. Obs., v. p. 55. Binney, Check List, No. 239. 51. G. intersita, Haldeman. Melania intersita, Haldeman, Monog. Limniades, No. 4, p.4 of cover, Dec. 28, 1841. Binney, Check List, No. 150. Brot, List, p. 35. Reeve, Monog. Melania, sp. 376. 52. G. columella, Lea. Melania columella, Lea, Philos. Proc., ii. p. 13, Feb., 1841. Philos. Trans., viii. p. 179, t. 6, f. 33. Obs. iii. p. 17. DeKay, Moll. N. Y., p. 96. Binney, Check List, No. 60. Troost, Cat. Shells Tenn. Wheatley, Cat. Shells U. S., p. 24. Catlow, Conch. Nomenc., p. 186. Brot, List, p. 35. Reeve, Monog. Melania, sp. 441. *This is only a rather wide. young specimen of lagueata, as I have ascertained by the inspection of some hundreds of specimens of that species. + Versipellis resembles a young luqueaia, but its texture is quite heavy although small. ft Described by Mr. Lea as a smooth species, but among a hundred perfect speeimens before me, over eighty are more or less plicate on the spire. 42 53. G. blanda, Lea. : Melania bland1, Lea, Philos. Proc., ii. p. 13, Feb. 1841. Philos. Trans., wit. “p.79, t.16, fF. 349° Obs. iil) p: 17.2 DeKay, Moll. ‘N. Y.; p. 97, Binney, Check List, No. 36. Troost, Cat. Shells Tennessee. Wheat- ley, Cat. Shells U. S., p. 24. Catlow, Conch. Nomenc., p. 185. Brot, List, p. 35. 54. G. nitens, Lea. Melania nitida,* Lea, Philos. Proc., ii, p. 14, February, 1841. Melania nitens, Lea, Philos. Trans., viii. p. 182, t. 6, f. 40. Obs. iii. p. 20, DeKay, Moll. N. Y., p. 98. Binney, Check List, No. 178. Troost, Cat. Shells Tennessee. Wheatley, Cat. Shells U. S., p. 26. Catlow, Conch. Nomenc., p. 187. Brot, List, p. 36. 55. G. mutata, Brot. Melania Deshayesiana,t Reeve, Monog. Melania, sp. 275, September, 1860. Melania mutata, Brot, List, p. 37. 56. G. suturalis, Haldeman. Melania suturalis, Haldeman, Suplement to Monog. Limniades, No. 1, Oct., 1840. Wheatley, Cat. Shells U.S., p. 27. Jay, Cat., 4th ed., p. 275. 57. G. mutabilis,} Lea. Goniobasis mutabilis, Lea, Proc. Acad. Nat. Sci., p. 270, 1862. Jour. Acad. Nat. Sci., v- pt. 3, p. 331, t. 38, f. 189, March, 1863. Obs., ix. p. 153. 58. G. Viennaensis, Lea. Goniobasis Viennaensis, Lea, Proc. Acad. Nat. Sci., p. 267, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 315, t. 37, f. 160, March, 1863. Obs., ix. p..137. 59. G. Curreyana, Lea. Goniobasis Curreyana, Lea, Philos. Proc., ii. p. 13, Feb. 1841. Philos. Trans., viii. p. 180, t. 6, f. 36. Obs., iii. p. 18. Wheatley, Cat. Shells U. S., p. 25. Binney, Check List, No. 79. DeKay, Moll. N. Y., p. 97. Reeve, Monog. Melania, sp. 286. Troost, Cat. Shells, Tennessee. Cat-* low, Conch. Nomenc., p. 186. Brot. List, p. 35. Melasma Curreyana, Lea, Chenu, Man. de Conchyl. i. f. 2003. 60. G. costifera,§ Haldeman. Melania costifera, Haldeman, Monog. Melania., No. 2, p. 3 of Cover, Jan. 1841. Binney, Check List, No. 72. Brot, List, p. 34. Reeve, Monog. Melania, sp. 440. 61. G. Deshayesiana, Lea. Melania plicatula,|| Lea, Proc. Philos. Soc., ii. p. 14, Feb. 1841. Philos. Trans., viii. p: 182, t. 6, f. 41. Obs., iii. p. 20. Troost, Cat. Shells Tenn. Jay, Cat., 4th Edit., p. 274. Catlow, Conch. Nomenc., p, 188. Brot, List, p. 34. Melasma plicatula, Lea, Chenu, Man. de Conchyl. i. f. 1998. Melania Deshayesiana, Lea, Philos. Proc., ii. p. 242, Dec. 1842. Philos. Trans., ix. p. 24. Obs.,ix. p. 24. DeKay, Moll. N. Y.p. 98. Wheat- ley, Cat. Shells U.S., p. 25. Troost, Cat. Shells Tennessee. Jay, Cat. Shells, 4th Edit., p. 273. Binney, Check List, No. 88. Brot, List, p. 34. * Preoceupied. + Preoceupied by Mr. Lea, and the name changed to mutata by M. Brot. - Very closely allied to sutwralis, but differs in the form of the aperture. j Differs from Curreyana by its more numerous plice, more acuminated spire, and by the mouth belng more rounded at base. ‘ j Preoccupied, and changed to Deshayestana, 43 Melania Deshaysii, Lea, Reeve, Monog. Melania; sp. 330. 62. G. Abbevillensis, Lea. _ Goniobasis Abbevillensis, Lea, Proc. Acad. Nat. Sci., p. 268, 1862. Journ. Acad. Nat. Sci. v. pt. 3, p. 323, t. 38, f. 174, Mar. 1863. Obs., ix. p. 145. 63. G. Doolyensis, Lea. ~ Goniobasis Doolyensis, Lea, Proc. Acad. Nat. Sci., p. 266, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 315 t. 37, f. 159., Mar. 1863. Obs., ix. p. nBY iG 64. G.inconstans,f Lea. Goniobasis inconstans, Lea, Proc. Acad. Nat. Sci., p. 269, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 325, t. 38, f. 178, Mar. 1863. Obs., ix. p. 147. 65. G. continens, Lea. Goniobasis continens, Lea, Proc. Acad. Nat. Sci., p. 268, 1862. Jour. Acad. Nat. Sci., pt. 3, p. 324, t. 38, f. 176. Mar. 1863. Obs., ix. p. 146. Goniobasis proletaria, Lea, Proc. Acad. Nat. Sci., p. 268, 1862. Jour, Acad. Sci., v. pt. 3, p. 325, t. 38, f, 177, Mar. 1863. Obs., ix, p. 147. 66. G. viridicata, Lea. Goniobasis viridicata, Lea, Proc. Acad. Nat, Sci., p. 268, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 322, t. 38, f. 172, Mar, 1863. Obs., ix. p. 144. 67. G. purpurella, Lea. Giniobasis purpurella, an Proc. Acad. Nat. Sci., p. 269, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 327, t. 38, f, 183, Mar. 1863. Obs., ix. p. 149. 68. semicostata, Conrad. Melania semicostata, Conrad, New Fresh-Water Shells, App. p. 7, t. 9, f. 6, 1834. Binney, Check List, No. 241. Brot, List, p. 59. 69. G. dislocata, Ravenel. Melania dislocata, Ravenel, Cat. Shells, p. 11, 1834. Binney, Check List, No. 90. Brot, List, p. 35. Reeve, Monog. Melania, sp. 380. Goniobasis Lindsleyi, Lea, Proc. Acad. Nat. Sci. +» p- 267, 1862, Jour. Acad. Nat. Sci., v. pt. 3, p. 319, t. 37, f. 167, Mar. 1863. Obs. ix. p. 141. 70. G.paupercula,§ Lea. Goniobasis paupercula, Lea, Proc. Acad. Nat Sci., p. 268, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 324, t. 38, f. 176, Mar. 1863. Obs. EDs 146. 71. G. corneola, Anthony. Melania corneola, Anthony, Proc. Acad. Nat. Sci., p. 61, Feb. 1860. Bin- ney, Check List, No. 68. Brot, List, p. 35. Reeve, Monog. Melania, sp. 456. 72. G.nassula, Conrad. Melania nassula, Conrad, New Fresh-Water Shells, p. 55, t. 8, f. 9, 1834. Binney, Check List, No. 171. DeKay, Moll. New York, p- 97. Jay, Cat. 4th Edit., p. 274. Wheatley, Cat. Shells U.S., p. 26. Brot, List, p- 34. Reeve, Monog. Melania, sp. 412. Catlow, Conch. Nomenc. ope 187. 73. G.perstriata, Lea. Melania perstriata, Lea, Philos. Trans., x. p. 296, t. 30, f. 2. Obs., v. p. 52. Binney. Check List, No. 203. med List, p. 36. I I doubt whether this is more than the young of Doolyens?s. = dislocata, young? 9) 4t 74. G. rugosa, Lea. Melania corrugata, Lea, Philos. Proc. ii. p. 13, Feb. 1841. Philos. Trans. viii. p. 177, t. 5, f. 30. Obs., iii. p. 15. Troost, Cat. Shells Tenn. Wheatley, Cat. Shells U. 8., p. 24. Melania rugosa,* Lea, Philos. Proc. ii. p. 237, Dec. 1842. Philos. Trans. viii. p. 248. Obs., iii. p. 86. DeKay, Moll. New York, p. 96. Bin- ney, Check List, No. 235. Catlow, Conch. Nomenc., p. 188. Brot List, p. 34. : 75. G. costulata, Lea. Melania costulata, Lea, Philos. Proc., ii. p. 14, Feb. 1841. Philos. Trans. viii. p. 181, t. 6, f. 39. Obs., iii. p. 19. Binney, Check List, No. 73. DeKay, Moll. N. Y., p. 98. Jay, Cat. 4th Edit., p. 273. Troost, Cat. Shells Tennessee. Wheatley, Cat. Shells U.S., p. 24. Reeve, Mo- nog. Melania, sp. 272, 360. Brot, List, p. 35. 5 76. @.cinerella, Lea. Goniobasis cinerella, Lea, Proc. Acad. Nat. Sci., p. 269, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 328, t. 38, f. 184, Mar. 1863. Obs., ix. p. 150. 77. G. Edgariana, Lea. Melania Edgariana, Lea, Philos. Proc., ii. p. 14, Feb. 1841. Philos. Trans., viii. p. 180, t. 6, f. 37. Obs., iii. p. 18. DeKay, Moll. N. Y. p. 97. Jay, Cat. 4th Edit., p. 273. Binney, Check List, No. 94. Troost, Cat. Shells Tenn. Reeve, Monog. Melania, sp. 430. Wheat- ley, Cat. Shells U. S., p. 25. Catlow, Conch. Nomenc., p. 186. Melasma Edgariana, Lea, Chenu, Man. de Conchyl, i. f. 1997. 78. G.caliginosa, Lea. Melania caliginosa, Lea, Philos. Proc. ii. p. 15, Feb. 1841. Philos. Trans viii, p. 189, t, 6, f. 56. Obs., iii. p. 27.. Wheatley, Cat. Shells U. S., p. 24. Reeve, Monog. Melania, sp. 293. DeKay, Moll. New York, p. 100. Binney, Check List, No. 44. ‘Troost, Cat. Shells Tenn. Jay, Cat. 4th Edit., p. 273. Catlow, Conch. Nomence. p. 185. Brot, List, p. 34. 79. G. nodulosa, Lea. Melania nodulosa, Lea, Philos. Proc. ii. p.15, Feb. 1841. Philos. Trans viii. p. 190, t. 6, f.57. Obs., iii. p. 28. DeKay, Moll. N. Y., p. loo. Binney, Check List, No. 180. Troost, Cat. Shells Tennessee. TT heat ley, Cat. Shells U. S., p. 26. Catlow, Conch. Nomene. p. 188. Brot List, p. 34. Reeve, Monog. Melania, sp. 276. . 80. G. glauca, Anthony. Melania glauca, Anthony, Proc. Acad. Nat. Sci., p. 57, Feb. 1860. Binney Check List, No. 125. Brot, List, p. 35. Reeve, Monog. Melania, sp. 389. : Goniobasis Lyonii, Lea. Proc. Acad, Nat. Sci., p. 266. Jour. Acad. Nat. Sci v. pt. 3, p. 313, t. 37, f. 156, Mar. 1863. Obs., ix. p. 135. ‘i 81 G.difficilis,} Lea. Goniobasis difficilis, Lea, Proc. Acad. Nat. Sci. p. 267, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 317, t. 37. f, 163, Mar. 1863. Obs., ix. p. 139. 82. G.sparus, Lea. Goniobasis sparus, Lea, Proc. Acad. Nat. Sci., p. 267, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 316, t. 37, f. 162, Mar. 1863. Obs., ix, p. 138. Goniobasis cerea, Lea, Proc. Acad. Nat. Sci., p. 268, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 321, t. 38, f. 171, Mar. 1863. Obs. ix. p. 143. 2 Preoccupied. + Resembles G. glauca, but the whorls are more convex. @. baculum is more cylindrical than ithis species. 45 83. G. Thorntonii, Lea. Goniobasis Thorntonii, Lea, Proc. Acad. Nat. Sci., p. 268, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 320, t. 38, f. 168, Mar. 1863. Obs., ix. p. 142. 84. G.cancellata,* Say. Melania cancellata, Say, New Harmony Disseminator, p. 260, Aug. 1829. Say’s Reprint, p. 16. Binney’s Edit., p. 141. Binney, Check List, No. 46. DeKay, Moll. N. Y., p. 93. Wheatley, Cat. Shells U.S., p. 24. Brot, List, p. 34. 8b. G. circincta, Lea. Melania circincta, Lea, Philos. Proc. ii. p. 15, Feb. 1841. Philos. Trans., viii. p. 187, t. 6, f. 51. Obs., iii. p. 25. DeKay, Moll., N. Y., p. 99. Troost, Cat. Shells Tenn. Wheatley, Cat. Shells U.S., p. 24. Catlow, Conch. Nomenc., p. 186. Brot, List, p. 31. Reeve, Monog. Melania, sp. 289. Melania circinnata, Lea, Binney, Check List, No. 54. Juga circinnata, Lea, Chenu, Man. de Conchyl., i. f. 2015. 86. G.athleta, Anthony. Melania athleta, Anthony, Ann. Lyc. Nat. Hist. N. Y., vi. p. 83, t. 2, f. 1, Mar. 1854. Binney, Check List, No. 23. Brot, List, p. 34. Reeve, Monog. Mel., sp. 258. 87. G. curvicostata, Anthony. Melania curvicostaia, Anthony, MSS. Reeve, Monog. Melania, sp. 462. Brot, List, p. 35. Melania densecostata, Reeve, Monog. Melania, sp. 465. Brot, List, p. 35. 88. G.striatula, Lea. Melania striata,+ Lea, Philos. Proc. ii. p. 15, Feb. 1841. Philos. Trans., viii. p. 186, t. 6. f. 49. Obs., iii. p. 24. Troost, Cat.Shells Tenn. Wheat- ley, Cat. Shells U. S., p. Juga striata, Lea, Chenu. Man. de Conchyl. i. f. 2018. Melania striatula, Lea, Philos. Proc. ii. p. 237, Dec. 1842. Philos. Trans. viii. p. 248. Obs. iii. p. 86. DeKay, Moll. New York, p. 99. Jay. Cat. 4th Edit., p. 275. Binney, Check List, No. 249. Catlow, Conch. Nomenc. p- 188. Reeve, Monog. Melania, sp. 466. Brot, List, p. 35. 89. G.tripartita, Reeve. ' Melania tripartita, Reeve, Monog. Melania, sp. 364, Dec. 1860. Brot, List, p. SH(e 90. G.decora, Lea. ~ Melania decora, Lea, Philos. Proc. ii. p. 14, Feb. 1841. Philos. Trans., viii. p- 181, t. 6, f. 38. Obs., iii. p. 19. DeKay, Moll. N. Y., p. 98. Bin- ney, Check List, No. 85. Troost, Cat. Shells Tenn. Wheatley, Cat. Shells U.S., p. 25. Reeve, Monog. Melania, sp. 292. Catlow, Conch. Nomenc. p. 186. Brot, List, p. 35. 91. G.crebricostata, Lea. Melania crebricostata, Lea, Philos. Proc. ii. p. 13, Feb. 1841. Philos. Trans., viii. p. 179, t. 6, f. 35. Obs., iii. p. 17. DeKay, Moll. New York, p. 97. Jay, Cat. 4th Edit., p. 273. Troost, Cat. Shells Tenn. Wheat- ley Cat. Shells U. S., p. 24. Reeve, Monog. Melania, sp. 374. Binney, Check List, No. 74. Brot, List, p. 35. ‘ Melasma crebricostata, Lea, Chenu, Man. de Conchyl. i. f, 1999. *I am unable to find specimens of this shell in any of our cabinets, and as it has never been figured, I assign it the position it occupies in this catul gue from the description only. + Name preoccupied. 46 92. G.comma, Conrad. Melania comma, Conrad, New Fresh Water Shells, p. 53, t. 8, f. 7, 1834. Wheatley, Cat. Shells U.S., p. 24. Reeve, Monog. Melania, sp..107. Binney, Check List, No. 61. DeKay, Moll. New York, p. 95. Jay, Cat. 4th Edit., p. 273. Brot, List, p. 35. Catlow, Conch. Nomenc. p. 186. 93. G. acuta, Lea. Melania acuta, Lea. Philos. Trans., iv. p. 101, t. 15, f. 32. Obs. i. p. iii. Troost, Cat. Shells Tennessee. Wheatley, Cat. Shells U. S., p. 24. Binney, Check List, No. 4. Brot, List, p.3. Reeve, Monog, Melania, sp. 274. 94. G.subcylindracea, Lea. Melania subcylindracea, Lea, Philos. Proc. ii. p. 12, Feb. 1841. Philos. Trans., Vili. p. 169, t. 5, f. 14. Obs., iii. p. 7. DeKay, Moll. New York, p. 94. Troost, Cat. Shells Tenn. Binney, Check List, No. 253. Wheatley, Cat. Shells U.S. p. 27.. Catlow, Conch. Nomenc. p. 188. Brot, List, p 39. Reeve, Monog. Melania, sp. 399. 95. G. baculum, Anthony. Melania baculum, Anthony, Ann. N. Y. Lyc. Nat. Hist. vi. p. 98, t. 2. f. 16, Mar. 1854. Binney, Check List, No. 27. Brot, List, p. 34. Reeve, Monog. Melania, sp. 431. 96. G.concinna,* Lea. ; Melania concinna, Lea, Philos. Proc. ii. p. 14, Feb. 1841. Philos. Trans., viii. p. 183, t. 6, f. 42. Obs. iii., p. 21. DeKay, Moll. New York, p. 98. Troost, Cat. Shells Tennessee. Wheatley, Cat. Shells U.S., p. 24. Catlow, Conch. Nomenc. p. 186. Binney, Check List, No. 63. Brot, List, p. 34. 97. G.eliminata, Anthony, Melania eliminata, Anthony, Ann. New York Lyc. Nat. Hist., vi., p. 97, t. 2, f. 15, Mar. 1854. Binney, Check List, No. 98. Brot, List, p. 34. 98. G. teres, Lea. Melania teres, Lea, Philos. Proc., ii. p. 13, Feb. 1841. Philos. Trans.. viii. p. 176, t. 5, f. 27. Obs., iii. p. 14. DeKay, Moll. New York, p. 96. Troost, Cat. Shells Tenn. Wheatley, Cat.Shells U.S., p.27. Binney, Check List, No. 269. Jay, Cat. 4th Edit., p. 275. Catlow, Conch. Nomence. p. 189. Brot, List, p. 35. Melania terebralis,+ Lea, Philos. Proc., ii, p. 13, Feb. 1841. Philos. Trans., viii, p, 178, t. 6, f. 832. Obs., iii. p. 16. DeKay, Moll. New York, p. 96. Troost, Cat. Shells Tenn. Wheatley, Cat. Shells U.8.. p. 27. Binney, Check List, No. 268. Catlow, Conch. Nomene. p. 189. Brot, List, p. 36. 99. G. gracillima, Anthony. Meélania gracillima, Anthony, Proc. Acad. Nat. Sci., p. 62, Feb. 1860. Bin- ney, Check List, No. 129. Brot, List, p.36. Reeve, Monog. Melania, sp. 437. 100. G. Clarkii, Lea. Melania Clarkii, Lea, Philos. Trans., x. p. 297, t. 30, f. 4. Obs., v. p. 53. Binney, Check List, No. 56. Brot, List, p. 34. Reeve, Monog. Me- lania, sp. 356. 101.-G- DeGam-pii, Lea. Goniobasis DeCampui, Lea, Proc. Acad. Nat. Sci., p. 154, May, 1863. * Extensively distributed by Mr. Anthony as J/. comma, Conrad, variety. + Half grown shell of G. teres. 47 102. G. abbreviata, Anthony. Melania abbreviata, Anthony, Bost. Proc., iii. p. 360, Dec., 1850. Binney, Check List, No. 4. Reeve, Monog. Melania, sp. 424. Melania elegantula, Anthony, Ann. Lyc. Nat. Hist. N. Y., vi. p. 103, t. 3, f. 2, March, 1854. Binney, Check List, No. 96. Brot, List, p. 32. Reeve, Monog. Melania, sp. 346. Melania coronilla, Anthony, Ann. Lyc. Nat. Hist. N. Y., vi. p. 126, t. 3, f. 27, March, 1854. Binney, Check List, No. 69. Brot, List, p. 32. Reeve, Monog. Melania, sp. 418. Melania chalybzxa, Anthony, Brot, List, p. 37. 103. G. plicifera, Lea. Melania plicifera, Lea, Philos. Trans. vi. p. 93, t. 23, f. 90. Obs. ii. p. 93. Wheatley, Cat. Shells U.S., p. 26. Jay, Cat., 4th ed., p. 274. Binney, Check List, No. 211. Reeve, Monog. Melania, sp. 284. Cooper, Report, p. 374. Brot, List, p. 36. Gould, Moll. Expl. Exped., p. 143, F165. Melasma plicifera, Lea, Chenu, Manuel, i. f. 2001. 104. G. silicula, Gould. Melania silicula, Gould, Bost. Proc., ii. p. 224, June, 1847. Otia Concho- logica, p. 46. Moll. Expl. Exped., p. 141, f. 164, 164a. Cooper, Re- port, p. 374. Binney, Check List, No. 243. Brot, List, p. 52. Melania Shastaensis, Lea, Proc. Acad. Nat. Sci., viii. p. 80, April, 1856. Bin- ney, Check List, No. 242. Cooper, Report, p. 374. Goniobasis Shastaensis, Lea, Jour. Acad. Nat. Sci., v. pt. 3, p. 337, t. 38, f. 199, March, 1863. Obs. ix. p. 159. Melania rudens, Reeve, Monog. Melania, sp. 224, May, 1860. Brot, List, p. 105. G. nigrina,* Lea. Melunia nigrina, Lea, Proc. Acad. Nat. Sci., p. 80, April, 1856. Goniobasis nigrina, Lea, Jour. Acad. Nat. Sci., v. pt. 3, p. 302, t. 37, f. 137, March, 1863. Obs. ix. p. 124. Binney, Check List, No. 177. 106. G. rubiginosa, Lea. Goniobasis rubiginosa, Lea, Proceed. Acad. Nat. Sci., p. 270, 1862. Journ. Acad, Nat. Sci., v. pt. 3, p. 333, t. 38, f. 193, March, 1863. Obs. ix. p. 155. 107. G. Bairdiana, Lea. Goniobasis Bairdiana, Lea, Proc. Acad. Nat. Sci., p. 267, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 317, t. 37, f. 164, March, 1863. Obs. ix. p. 139, t. 37, f. 164. D. Shell angulate. 108. G. trochiformis,} Conrad. Melania trochiformis, Conrad, New Fresh-Water Shells, p. 56, t. 8, f. 11, 1834. DeKay, Moll. New York, p. 100. Wheatley, Cat. Shells U.S., p. 27. Binney, Check List, No. 275. Brot, List, p. 31. 109. G. cristata,f Anthony. Melania cristata, Anthony, Ann. Lyc. Nat. Hist. N. Y., vi. p. 108, t. 3, f. 8, March, 1854. Binney, Check List, No. 77. Brot, List, p. 32. Reeve, Monog. Melania, sp. 413. 110. G. cruda, Lea. Goniobasis cruda, Lea, Proc. Acad, Nat. Sci., p. 270, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 332, t. 38, f. 190, March, 1863. Obs. ix. p. 154. * Differs from silicula in being more cylindrical, with the apical whorls carinate. + The figure of this speciesin Mr. Conrad’s work is not recognizable, but it will probably be found to = cristata, Anth., young. { = proteus, Lea? 48 111. G. Whitei, Lea. Goniobasis Whitei, Lea, Proc. Acad. Nat. Sci., p. 266, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 310, t. 37, f. 151, March, 1863. Obs. ix. p. 132. 112. G. casta, Anthony. Melania casta, Anthony, Ann. N. Y. Lyc. Nat. Hist., vi. p. 100, t. 2, f. 19, March, 1854. Binney, Check List, No. 50. Brot, List, p. 32. Reeve, Monog. Melania, sp. 381. 113. G. rhombica, Anthony. Melania rhombica, Anthony, Ann. N. Y. Lye. Nat. Hist., vi. p. 116, t. 3, f. 16, March, 1854. Binney, Check List, No. 228. Brot, List, p. 38. Reeve, Monog. Melania, sp. 347. 114. G. angulata, Anthony. Melania angulata,* Anthony, Ann. N. Y. Lyc. Nat. Hist., vi. p. 117, t. 3, f. 17, March, 1854. Binney, Check List, No. 14. Brot, List, p. 37. Reeve, Monog. Melania, sp. 386. Melania cinnamomea, Anthony, Reeve, Monog. Melania, sp. 379. Brot, List, p- 35. Goniobasis intercedens, Lea, Proceed. Acad. Nat. Sci., p. 265, 1862. Journ. Acad. Nat. Sci.,v. pt. 3, p. 305, t. 37, f. 143. Obs. ix. p. 127. 115. G. Bridgesiana, Lea. Goniobasis Bridgesiana, Lea, Proc. Acad, Nat. Sci., p. 265, 1862. Jour. Acad. Nat. Sci., v. pt. 3, p. 305, t. 37, f. 142, March, 1863. Obs. ix. p. 173, t. 37, f. 142. 116. G. cu bicoides, Anthony. Melania cubicoides,t+ Anthony, Proc. Acad. Nat. Sci., p. 60, Feb., 1860. Bin- ney, Check List, No. 78. Brot, List, p. 39. Reeve, Monog. Melania, sp. 445. 117. G. Spill manii, Lea. Goniobasis Spillmanii, Lea, Proceed. Acad. Nat. Sci., p. 264, 1862. Journ. Acad. Nat. Sci., v. pt. 3, p. 302, t. 37, f. 138, March, 1863. Obs. ix. p. 124. 118. G. plebeius, Anthony. Melania plebejus, Anthony, Bost. Proc., iii. p. 362, Dec., 1850. Reeve, Monog. Melania, sp. 414. Melania plebeius, Anthony, Binney, Check List, No. 209. Melania plebeia, Anthony, Brot, List, p. 38. 119. G. o paca,ft Anthony. Melania opaca, Anthony, Proc. Acad. Nat. Sci., p. 58, Feb., 1860. Binney, Check List, No. 189. Brot, List, p. 38. Reeve, Monog. Melania, sp. 384. Melania tostoma, Anthony, Proc. Acad. Nat. Sci., p. 62, February, 1860. Binney, Check List, No. 152. Brot, List, p. 31. Reeve, Monog. Me- lania, sp. 351. Melania nigrostoma,g Anthony, Reeve, Monog. Melania, sp. 463, 367. Brot, List, p. 38. 120. G. pallidula, Anthony. Melania pallidula, Anthony, Ann. N. Y. Lyc. Nat. Hist., vi. p. 115, t. 3, f. 15, March, 1854. Binney, Check List, No. 197. Brot, List, p. 38. Reeve, Monog. Melania, sp. 417. * Juvenile shell. The adult is described under the names of cinnamomea and infercedens. t The longitudinal ribs attributed to this species by Mr. Anthony are very faint on the type shell, and do not exist at all on other specimens. : t = ovoidea, Lea. ? G. ebenum of Lea appears to be more rounded in the base of the aperture, and the periphery not angulated ; still it may be the same. @ Young specimens. 49 121. G. vicina,* Anthony. Melania vicina, Anthony, Ann. N. Y. Lyc. Nat. Hist., vi. p. 114, t. 3, f. 14, March, 1854. Binney, Check List, No. 288. Brot, List, p. 39. Reeve, Monog. Melania, sp. 291. 122. G. Spartenburgensis,} Lea. Goniobasis Spartenburgensis, Lea, Proc. Acad. Nat. Sci., p. 265, 1862. Jour. Acad. Nat. Sci., 2d ser., v. pt. 3, p. 307, t. 37, f. 147, March, 1863. Obs. ix. p. 129. 123. G. modesta, Lea. Melania modesta, Lea, Philos. Proc., iv. p. 166, Aug., 1845. Philos. Trans., x. p. 60, t. 9,f. 34. Obs. iv. p. 60. Binney, Check List, p. 36. E. Whorls very strongly carinated. 124. G. pagodiformis, Anthony. Melania pagodiformis, Anthony, Ann. N. Y. Lyc. Nat. Hist., vi. p. 106, t. 3, f. 6, March, 1854. Binney, Check List, No. 195. Brot, List, p. 36. Reeve, Monog. Melania, sp. 260. Melania torulosa, Anthony, Ann. N. Y. Lye. Nat. Hist., vi. p. 110, t. 3, f. 10. March, 1854. Binney, Check List, No. 273. Brot, List, p. 37. Reeve, Monog. Melania, sp. 370. 125. G. Gerhar dtii, Lea. Goniobasis Gerhardt, Lea, Proceed. Acad. Nat. Sci., p. 270,1862. Journ. Acad. Nat. Sci., v. pt. 3, p. 330, t. 38, f. 187, March, 1863. Obs., ix. p. 152. Goniobasis infuscata, Lea, Proceed. Acad. Nat. Sci., p. 270, 1852. Journ. Acad. Nat. Sci., v. pt. 3, p. 330, t. 38, f. 188, March, 1863. Obs. ix. p. 152. 126. G. oblita, Lea. Melania oblita, Lea, Philos. Trans., x. p. 298,t. 30, f. 6. Obs.v. p. 54. Bin- ney, Check List, No. 182. Brot, List, p. 36. 127. G. acutocarinata,g Lea. Melania acutocarinata, Lea, Philos. Proc., ii. p. 14, Feb., 1841. Philos. Trans., Vili. p. 184, t.6, f. 46. Obs. iii. p. 22. DeKay, Moll. N. Y., p. 99. Troost, Cat. Shells Tenn. Wheatley, Cat. Shells U. S., p. 24. Bin- ney, Check List, No. 5. Catlow, Conch. Nomenc., p. 185. Brot, List, p- 36. Elimia acutocarinata, Lea, Chenu, Manuel.de Conchyl., i. f. 1979. F. Body whorl bi-multiangulated. 128. G. tabulata, Anthony. Melania tabulata, Anthony, Ann. N. Y. Lyc. Nat. Hist., vi. p. 118, t. 3, f. 18, March, 1854. Binney, Check List, No. 262. Brot, List, p. 39. 129. G. Catawbaea,|| Haldeman. (MSS.) 130. G. vittata, Anthony. Melania vittata, Anthony, Ann. Lyc. Nat. Hist. N. Y., vi. p. 89, t. 2, f. 7, March, 1854. Binney, Check List, No. 294. Brot, List, p. 87. Reeve, Mouog. Melania, sp. 262. * Described as from Alabama, but all the specimens before me are labelled ‘* Kentucky” by Mr. Anthony, and [ think the latter habitat is correct. + I fear the Northern specimens of this species are not distinct from depygis, Say. Differs from symmetrica in being striate. This shell is believed by Prof. Haldeman to = simplex, Say, but I doubt it. “ PROSPECTUS OF THE 2 VB, ea JOURNAL OF CONCHOLOGY. THE undersigned proposes to issue, early in next year, the first number of a quarterly publication bearing the Abome title. Believing that the status of Conchology in the United States is such as to justify and demand a special exponent, and rely- ing on the enthusiastic love of the Science which distineuishes its votaries for a generous and liberal support, he willingly assumes the responsibility of publisher, together with the cer- tainty of present pecuniary loss, which must necessar ily attend an undertaking of this nature. It is surely not expecting too much, to depend upon the unanimous and hearty support, and unremitting effort of those interested in Conchology, to increase our Subseri eee List as rapidly as possible ;—and perhaps on our part, it may be deemed almost superfluous to say, that after ates the ex- penses of the publication of the Journal as now projected, any surplus funds rem: aining, will be expended entirely either on its enlargement, or in providing more abundant illustration. The American Journal of Cone ‘thology will be published quarterly in numbers of about 100 pp. each, printed on fine heavy paper, making a volume of 400 pp. per annum. Each number will contain at least two car efully executed Lithographic Plates, colored by hand, and also the Portrait and Autograph of a distinguished American Conchologist. 2 Prospectus of the The Literary contents of the Journal will consist of Descriptions of New Genera and Species. Articles on Geographical, Bathymetrical and Geological Distribution. Anatomical Papers. Synonymy and Classification. Elaborate Reviews of New Books. Editor’s Table:— Including Notices of all Works published, and of all Concho- logical Papers in American and foreign periodicals, and Transactions of Learned Societies, with interesting extracts fon them and synopses of their contents— Announcements ol new works in preparation—Notices of the various pubhe and private Museums—Of Collections for sale or ex- change—Answers to Inquiries of Correspondents—Obituary. tae" Conchologists are earnestly requested to contribute papers immediately, as the first number of the Journai wil! be published as soon as a sufficient quantity and variety of MSS. is at our disposal. GEORGE W. TRYON, JR, 625 Market Street, Philadelphia. November 30, 186+. American Journal of Conchology. TERMS. Subscriptions in advance, Ten Dollars per annum. The work will be sent throughout the United States post paid. Single Numbers for sale at Three Dollars each. In Europe all the principal booksellers and shell dealers will receive subscriptions and supply the Journal. (P. O. address) 186 GEORGE W. TRYON, JR., 625 Market St., Philadelphia, Enter my name on the Subscription List for copies of the AMERICAN JOURNAL OF CONCHOLOGY, For the year 1865, and thereafter, until I order it to be dis- continued. (Name.) Qs" Subscription payable on delivery of the first number of the Journal. a it ini