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NVINOSHLINS SSIYVYUdSIT LIBRAR “e Newer eee te = i» bh LIBRARIES NVINOSHLIWS NYINOSHLIWS NVINOSHLIWS SMITHSONIAN a eee, oN SMITHSONIAN INSTITUTION NOILNLIS NVINOSHLINS NOILNLILSNI NOILNLILSNI = x: NOILNLILSNI LIBRARIES SMITHSONIAN INSTITUTION NOILNLILSNI Sdluvudi7 LIBRAR S S3IYVYSIT LIBRARIES SMITHSONIAN NVINOSHLINS SAluYvyuaiT LIBRARIES SMITHSONIAN w ud ac < oc m a = = = | o Si 6 a | =a = - 2 : Es = E 2 E i F = | 2 2 2 z | NOMALILSNI SAlYVUSTILLIBRARIES SMITHSONIAN _ | Z = = & z = = si he Bp a 4 re) ae Bf ra) S = 2 SUL = 2 } E 2 “yy E = 2 = > ™ = = > o = 7) , an . > i pMITHSONIAN _ INSTITUTION NOILNLILSNI NVINOSHLINS S3INVYa IT u Ps e z we ” Zz kas av” = 7) 4 7) a. = oc 3 oc = = d 2 : 5: : ed A — (@) —_ Oo ll Fa aa | ra = NOILNLILSNI NVINOSHLINS S3IYVYYUGIT LIBRARIES “INSTITUTION NOIMNALIL oe 6 = é : S Oo = = ow = > We 5 : - s E - SS = z = i ms ss RNR E I Wo ra LIBRARIES SMITHSONIAN _ INSTITUTION NOILNLILSNI NVINOSHLINS SAIYVWYSIT_ LIBRAR IS S N S N OE LTS BES I A I ° ov’ Cee RAD Lforee 0A Ahrlls by Ly doeihy, 24. Bes Lepr C, Catale que of Libra “7 4 Veo Jet town, ()tati eat Metter J’ } es 24 €~ Lt 4434-4 FF, pls. GJ2-/0Of, 3/ A ISH Hi) a 44 §2- se G, b Ye = Gy Seay ZH 7-608, ee in eno ; : , ; (SO Saciy O75". 818-1188 ye ff GO9 6% Pa een jee] (8) He ELD ea) OU rs GOs eg Oe ‘ SL- 163 “ /+#; ry [Oo = fe 4 Ee is 763- F46 5 POH I TS | 54 Pica Cae iy ea ae a F7GH-1 56 gow THESAURUS CONCHYLIORUM, MONOGRAPHS GENERA OF SHELLS. EDITED BY Division of Mpiiys » “ aA Ss | Sectional Library G. B. SOWERBY, E.LS. . eee VOL. IL. eee ewer LONDON: SOWERBY, 70, GREAT RUSSELL STREET, BLOOMSBURY 1835. 3503291 QL ow Pre) 713 IY 7 ve Zz text SeNHRE of Genera of Shells contained in the second volume of the “THESAURUS CANCELLARIA NavtiLus OvuLUM PHOLAS TRIOMPHALIA NERITINA NAVICELLA . . BuLuip®, Family of MEROE CYTHEREA CIRCE ARTEMIS LuctInopsiIs TaPEs CLEMENTIA VENUS Supplementary VENERIDa First Index to VenERIDA& VENERUPIS PETRICOLA ASTARTE . Cyprina and Suppl. VENERIDE Second Index to VenERIDz . EULIMA NIso LEIOSTRACA OBELIsSCcUS PYRAMIDELLA Monoptyema STOMATELLA STOMATIA GENA Micrortis CERITHIUM MONOGRAPHS CONCHYLIORUM.’ Page. Plate. . 439 to 461 92 to 96 . 463 — 465 97 — 98 . 467 — 484 99 — 101 . 485 — 505 102 — 108 . 507 — 546 . . 109 — 116 . 547 — 552 117, 118, 118 ds. . 553 — 608 119 — 125 . 609 — 611 126 . 61i — 648 127 — 136 . 648 — 654 137 — 139 . 656 — 677 140 — 144 . 678 — 702 145 — 151 . 1038 — 742 152 — 162 . 142 — 745 163 . 746 — 762 . 763 — 770 164 — 165 - A AT 166 778 — 783 167 784 — 787 168 . 788 — 791 . 793 — 825 169 — 172 . 827 — 846 178 — 175 . 847 — 860 176 — 186 The supplementary plates and descriptions of Cyclostoma, pl. 31 a, 314, and pages 157*, 168*, should be placed following pl. 31 and page 156 in Vol. L., if that volume is still unbound. end of Vol. IT. If not, at the As the plan formerly recommended, of binding the plates separately from the text, does not seem to succeed, perhaps it will be better to place the plates after the text of each genus. however, of those who wish it, a second copy of the Title and Contents is given, For the convenience, NOTICE. iy publishing the completion of the Second Volume, the Editor again thanks his friends for their support, and again apologizes for all delays. Any considerable increase in the former will be followed by a de- crease in the latter. Many of the Subscribers are already aware that the Editor’s father, Mr. G. B. Sowerby, F.L.8., to whom they are indebted for several Monographs, has been removed by death, after a life devoted to Science. His family, his acquaintances, his commercial patrons, and his fellow labourers in Natural History, will ever remember him with affection and honour, as a husband, a father, a friend, a man of inte- erity, and a useful contributor to knowledge. The business at 70, Great Russell Street, is continued by a part of the family 439 MONOGRAPH OF THE GENUS CANCELLARIA. Gen. Char. Molluscum trachelipodum marinum. ‘Testa spiralis, solida, plerumque cancellata, spird brevi, aperturd magna, colu- mella spiraliter plicaté. Operculum nullum. A marine mollusc belonging to the order of Trachelipoda, having a solid, generally cancellated shell with a short spire, large aperture and spirally plicated aperture. No operculum. 1. CANCELLARIA CASSIDIFORMIS (pl. xc. f. 15.), Sowerby, Pro. Zool. Soc. 1882. p. 53. C. testa crass, sub-turbinata, spird brevi, apice acuminato, sutura canaliculaté; anfractibus angulatis, ad angulum acute tu- berculatis, spiraliter sulcatis; apertura oblongé anticé vix emarg- nati, labio mterno expanso; columella triplicaté; colore fusco, albo unifasciato. Thick, turbinated, with a short, sharp spire, the whorls of which are angulated, with sharp tubercles at the angle and a groove at the suture. The aperture is long, with the inner lip spread and the outer hp with shghtly raised ndges inside. From Panama. 2. CaNCELLARIA SPENGLERIANA (PI. xci. f. 29.), Deshayes, Enc. Méth. p.185. C. Tritomis, Sowerby, Conch. Iustr. f. 15. C. testi sub-ovali, alternatim spiraliter decussaté; spird acu- minata, anfractibus angulatis, costatis; costis distantibus, crassis, ad angulum acuté tuberculatis; apertura ovali, levi; columella expansi, obtusé triplicaté, granulaté; labio externo denticulato posticé sub-canalifero, anticé paululim emarginato. Colore pallidé fulvo, obscuré bifasciato, ad angulum fusco. This shell is from Cagayan, Isle of Mindanao. It is decussated by spiral nes crossing thick, distant ribs ; the whorls are strongly angulated near the suture, and the ribs sharply tuberculated at the angle; the folds on the columella, which is granulated, are 440 irregular and obtuse, the outer lip is denticulated. The colour is pale buff, obscurely banded with grey and dark chesnut behind the angle. 3. CANCELLARIA NODULIFERA (pl. xciv. f. 57.), Sowerby, Tanc. Cat. Appendix, p. 15. (1825). Conch. Ilustr. f. 21. C. Im- perialis, Michelin, Guerin, Mag. Hist. Nat. (1832). C. testé ovato-ventricosi; spiri brevi; anfractibus posticé angulatis ; costis validis, distantibus, ad angulum acute tubercu- latis; lineis elevatis spiralibus; suturd profundé canaliculata ; apertura magna, levi: columelli granulaté, obtuse triplicata. Colore fulvo, albo prope medium anfractuum cincto. From Japan, a ventricose shell, with broad, distant ribs crossed by narrow spiral ribs or striz. ‘The whorls are angular and the suture canaliculated, the ribs tuberculated at the angle of the whorls. It is of a pale fawn or yellow colour with a white band near the centre of the whorls. The shell figured by Kiener as the same species, under Michelin’s name of C. imperialis may be really the same, but it has no canal at the suture. Nor does Kiener inform us why, supposing the species to be the same, he does not adopt the name first published. Michelin’s shell resembles our Cassidiformis. 4, CANCELLARIA CUMINGIANA (pl. xcii. f. 20.) Petit, Guerin, Mag. Hist. Nat. C. testa turbinatd, validé sulcati, anticé umbilicaté ; spird brevi; anfractibus rotundatis. Apertura magni, ovali, plicis tribus obtusis. Colore fusco, apertura alba. Suleated, rather turbinate with short rounded spire; with an umbilicus behind the columella and a smooth oval aperture. From Payta. 5. Cancentarta souipa (pl. xen. f. 4.), Sowerby, Pro. Zool. Soc. 1832, p. 52. C. test& sub-ovata, sub-turbinata, solidd, levi; spird brevi, ad st A A b A = a ) apicem costati, apertura ovali, oblong’; labio externo validé bi- emarginato: colore fulvo. Smooth, turbinated, rather oval, of an orange colour, with the canal strongly notched and the outer lp emargiated. Found at Real Llejos im Central America. 6. Cancentarta Butsutus (p. xev. f. 64.), Sowerby, Pro. Zool. Soc., 1832, p. 55. 441 C. test’ sub-turbinaté, sub-ovali, levi; spira acuminata, anfrac- tibus superioribus decussatim costatis; ultimo prope suturam et antic spiraliter striato; apertura pyriformi; plicis columellie tribus, prima acut4; labio externo acuto, ad canalem paululiim emarginato ; colore fulvo. Found at Real Llejos in Central America in company with C. solida, which it much resembles ; but the apex is longer and the ribs continued to the last whorl. The lower part of the body whorl is spirally striated. 7. CanceLtaria ovata (pl. xcii. f. 2.), Sowerby, Pro. Zool. Soc. 1842, f. 53. C. testa ovali, levigaté, spiraliter sulcaté; spiri brevi, acu- minata, anfractibus decussatim costatis, suturd distincté ; anfractu ultimo anticé sub-umbilicato : apertura angustaté ; columella plicis tribus, quarum prima prominente, duplicati ; labio externo, mar- gine dentato, anticé fluctuato, ad canalem emarginato, intus valide sulcato: colore fusco, apertura alba. Found at St. Elena, Kast Columbia, in eight to ten fathoms of water with a sandy bottom. It is oval, with a rather short can- cellated spire; the body whorlis grooved, and behind the colu- mella, slightly umbilicated, the upper fold of the columella is duplicate and prominent; the mouth is interiorly ribbed and the outer lip denticulated at the edge. The colour is dark chesnut with pale bands in both directions ; the aperture white. 8. CANCELLARIA OBESA (pl. xci. f. 37.), Sowerby, Pro. Zool. Soc. 1882, f. 52. C. testa crassi ovata, ventricosd, levi; spira brevi, acuminata, anfractibus decussatim costatis, sutura distincté; anfractu ultimo spiraliter obsolete sulcato; aperturd subangusté, interne validé costati, prope marginem costis validé elevatis; columella plicis duabus, posticai crass, duplicaté; labio externo prope suturam et ad canalem emarginato. Colore, pallidé fasciatim fulvo. Found at Puerto and in the gulf of Dulce, Central America, in fifteen fathoms of water. It is a ventricose, heavy shell, with a short spire which is decussated, but in the body whorl the spiral grooves are nearly obsolete. The mouth is internally ribbed and the upper fold of the columella is thick and duplicated. It is like C. ovata, but much more ventricose. 44.2 9. CANCELLARIA RETICULATA (pl. xcu. f. 17.), Lamarck, K. M.f. 375. f. 3. C. test solidissimé, costis undulatis transversé et longitudina- liter decussaté ; spiré acuminata; anfractibus rotundatis ; apertura anticé subquadrati: columellé crassa, plicis tribus validissimis, acuté prominentibus ; labio externo costis sexdecim crenato : colore fulvo, fusco irregulariter fasciato. A thick shell, with the spire rather prominent, reticulated by obtuse ribs crossing each other. The aperture is rather wide at the anterior, the folds of the columella very prominent and sharp, the outer lip is strongly ribbed from within. West Indies. 10. Cancettarta Canprpa (p. xcil. f. 8.), Sowerby, Conch. Hlustr. sp. 2. C. test’ ovali, alba; costis longitudinalibus, sub-noduliferis, transverse striatis decussaté ; spira acuminata, anfractibus subquad- ratis; columellé vix incrassatéi; plicis duo, und promiente: labio externo interne costato. Resembling C. reticulata, but white, with the longitudinal ribs sharper and more defined m proportion to the crossing strie. Polynesia. 11. CanceLLaRtIa AusTRALts (pl. xev. £.72, 73.), Sowerby, Conch. Llustr. sp. 24. C. testi alba, ovali, decussata mter costas minute striatis ; spira acuminati, anfractibus rotundatis; apertura interne plicata; columella plicis tribus obtusis. This shell, which 1s from New South Wales, is more oval and ventricose than C. candida, with the folds of the columella more obtuse, and the space between the cross ribs minutely striated. 12. CaNCELLARIA ALBIDA (pl. xciv, f. 43.), Hinds, Zoology of Sulphur, p. 42. C. test ovali sub-clongata costis, longitudinalibus, sub-nodu- liferis transversé striatis decussaté; spiré acuminata, anfractibus subquadratis; columella vix incrassaté; plicis tribus obliquis ; labio externo interné costato. A narrower shell than C. candida, with the three folds of the columella less prominent and more equal. 443 13. CancELLaRta uRcEOLATA (pl. xeiv. f. 48.), LZimds, Zool. Sulphur. p. 41. pl. xi. f. 7, 8. C. testé subcylindrica, levigatd, epidermide fusci induta; spird acuminati, anfractibus angulatis, longitudinaliter costatis, costis decussatis, ultimi anfractis distantibus, complanatis ; anfractu ultimo anticé coarctato, ad columellam umbilicato; apertura interné leviter costaté labio externo anticé flexuosa, ad canalem leviter emarginato; columella biplicata. This shell was procured in the gulf of Papagayo and at San Blas, in seven to fourteen fathoms water, it is of an oval form, with the last whorl subcylindrical ; the spire is acuminated, con- sisting of angular whorls which are decussated and ribbed. The body whorl is rather contracted anteriorly and umbilicated near the anterior termination of the columella. ‘The ribs on the body whorl are distant, broad, and flat. 14. CancELLARIA vENTRICosA (pl. xev. f.77.), Hinds, Pro. Zool. Soc. 1848, p.47. Zool. Sulphur. pl. xu. f. 11, 12. C. testé ovali, cancellaté, ventricos’; spira subelongaté, acumi- naté; anfractu ultimo, anticé subumbilicato: apertura levi; columella triplicati; labio externo ad marginem denticulato. Colore fulvo. From Realejo, on the W. coast of America. Something like C. candida, but of a brown colour, with a more acuminated spire, the whorls of which are less rounded ; and the mouth is smooth. 15. CaNCELLARIA GRANOSA (pl. xev. f. 58, 59.), Sowerby, Conch. Illustr. No. 15. fig. 17. (f. 16, exclusa.) C. test& ovali, costis noduliferis granulaté; spird acuminata ; anfractibus angulatis, angulo prominente granoso: apertura intils leviter costaté; columellé granulata, obtus4 triplicata. Colore pallidé fulvo-rufescente, ad angulum anfractuum maculis castaneis. This shell, from Van Dieman’s Land, is distinguished by the spiral ribs forming a series of tubercles in passing over the longi- tudinal ribs, which are still more strongly tubercled at the angle of the whorls. The columella is granulated and its folds small ; the mouth is lightly ribbed within. The shell is of a delicate buff colour with chesnut spots on the angle of the whorls, and the mouth pale fawn. We separate the shell represented m Conch. Illustr. f. 16. 16. CancELLaRIa UNDULATA (pl. xcii. f. 12.; pl. xev. £.79.), Sowerby gunr., Pro. Lool. Soc. 1848. 444 C. testa ovali, lineis undulatis, paululiim elevatis cincta ; costis crassiusculis subnoduliferis; anfractibus subangulatis ; apertura interné striaté; columelli crass, granulosa: colore fulvo-fusco, precipué ad angulum anfractuum, imterruptim fasciato. From Van Dieman’s Land. Mr. Cuming possesses a variety of stunted growth from the Philippines. This species was originally included with the preceding, from which it differs in the fineness of the strive, and the smallness of the spire compared with the body whorl. 17. Cancetiarta Buccrnores (pl. xc. f. 10, 11.), Sowerby, Pro. Zool. Soc. 1832, p. 54. C. testi oblong’, costis longitudinalibus noduliferis, et costis transversis subduplicatis corrugaté: apertura ovati oblonga, margine diffusi, emarginaté interné leviter costatd, posticé sub- canalifer’; columella bi-plicataé, granuliferaé. Colore fulvo, inter costas fusco, in medium anfractuum albo-unifasciato. From Real Llejos, Iquique, Callao, and Puerto Portrero. The more or less duplicated ridges in crossing the longitudinal ribs form small nodules particularly at the angle of the whorls; but they are much more distant than in C. granulosa. 18. CANCELLARIA INDENTATA (pl. xci. f.7; pl. xev. f. 80.), Sowerby, Pro. Zool. Soc. 1832, p. 54. C. cremata, Hinds, Voy. Sulphur. p. 42. inclusa. C. test& oblonga clathrata, poné columellam umbilicata, costis longitudinalibus et transversis noduliferis cancellata; anfractibus angulatis ; apertura plerumque subquadrata, postice et antice sub- canalifera, interné costata; labio externo obtusé dentato, anticé emarginato: columellé corrugata, irregulariter triplicatd; colore fusco. From Panama, and a dwarf variety from the gulf of Forseca. The shell is cancellated by equidistant bars crossing each other, and forming nodules at their junction. The mouth is strongly ribbed internally; the outer lip is rather dilated and dentated ; the columella is corrugated, and has three irregular folds, of which the lowest is the smallest. After carefully noticing the gradation of specimens, I am led to regard the variety, fig. 80, named C. cremata by Hinds, as correctly included in this species, although more conical in form. There is also a dwarf variety which is short and rounded, left out of the plates by oversight. 445 19. CanceLLaria MiTRiFoRMIS (pl. xci. f. 24. var. f. 35.), Sowerby, Pro. Zool. Soc. 1832. p. 51. C. uniplicata, Sowerby, P.Z.S. 1832. p. 173. C. testé oblonga, costis longitudinalibus et transversis numerosis, subnoduliferis cancellataé ; spiré acuminata ; anfractibus angulatis ; apertura levi; labio externo dentato, emarginato ; columella anticé producté, crenulaté, irregulariter bi-plicaté; colore brunneo ; variat nigricante. From Panama. In the variety named C. uniplicata, by Mr. Sowerby, senior, there is an indication of a second fold, which in an intermediate specimen becomes more decided: the gradation in other respects leaves no doubt on the mind of the describer of C. uniplicata, that, however different the dark-coloured specimens may appear, they are but incompletely formed varieties of C. mityi- Jormis, which is one of the most beautiful, as well as rare, of the Cancellaria in Mr. Cuming’s collection. 20. CANCELLARIA cCLAVATULA (pl. xci. f. 13; pl. xev. f. 67.), Sowerby, Pro. Zool. Soc. 1832. p. 52. C. testé elongata, clavaté; costis longitudinalibus transversé striatis; varicibus raris elevatis: spird acuminata anfractibus angulatis: apertura interné levi, prope marginem dentaté; labio externo emarginato, columella bi-plicaté. Colore fulvo vel fusco bilineato. Variat striis ad costas acuté elevatis. From Panama and Payta, where it was taken up from sandy mud in seven fathoms water. Like the last species it is slender in form. It has elevated varices at different periods of growth, hike those in the genus 777¢on. The mouth is laterally prominent. Fig. 67 represents a variety with the crossing strie elevated into points at the angle of the whorls. 21. CANCELLARIA T&HN1ATA (pl. xev. f. 75, 76.), Sowerby, Pro. Zool. Soc. 1848. C. testé oblonga, turrit’; costis numerosis, transverse striatis _ ad angulum anfractuum acuté angulatis; spird acuminata, apice mammelliferé; apertura interné levigati, margine acuto, columella levi, biplicaté. Colore pallidissimé fulvo, fusco teeniato. Shell oblong, turretted, with numerous transversely striated ribs, which are elevated into acute points at the angle of the whorls. The colour is disposed in transverse narrow bands on a very pale ground. Locality unknown. 446 22. CanceLtaria Piscatorum (pl. xc. f. 33.), Chemun. Conch. t. 10. f. 1151, 1152. C. nodulosa, Zam. Anim. sans vert. C. testa ovali, turrité, poné columellam umbilicatd ; costis acuté noduliferis, ad angulum anfractuum acuté elevatis; apertura magna, posticé angulataé ; labio externo dentato ; columella tortua, obscuré triplicaté. Colore griseo, fusco maculato, apertura fusca, albo unifasciato ; margine albo. From the sands at the mouth of the river Gambia. The mouth is large and angular, internally of a dark-brown colour, with white edge and one white band in the centre, the spme is formed of very distinctly angulated whorls. The ribs form sharp points at the angles. 23. CANCELLARIA GEMMULATA (pl. xcu. f. 14.), Sowerby, Pro. Zool. Soc. 1832. p. 55. C. testa ovato-ventricosa, alba, costis numerosis noduliferis et sulcis elevatis cancellaté ; spira breviusculd, anfractibus rotunda- tis; aperturié magn, posticé subcanaliculaté, interné costata, margine dentato; columella anticé triplicaté, posticé uniplicata. Of an oval form, with smooth nodules formed by transverse ridges passing over regular ribs. Found in Nocoya bay, in a bottom of sandy mud. 24, CaNcELLARIA DeEcussata (pl. xci. f.3.), Sowerby, Pro. Zool. Soc. 1832. p. 55. C. testa ovata decussatim costellata, costis ad juncturam nodu- liferis ; interstitiis quadratis ; spiré acuminata, anfractibus ro- tundatis; aperturd ovali, interne leviter costati; labio externo crenato; columellé wmbilicataé, validé triplicaté: colore fusco, albo unifasciato. From Panama and Puerto Portrero, in sandy mud, ten or thirteen fathoms water. Of an oval form, cancellated by equi- distant ridges crossing each other, and forming little knots at the juncture. The insterstices are square and smooth. 25. CANCELLARIA ELEGANS (pl. xcii. f. 36. pl. xevi. f. 104.), - Sowerby, Genera of Shells. C. testa ovali, minuté lineis elevatis acutis decussatd; spirA acuminata; anfractibus ad suturam subcanaliferis; apertura interné costata; labio externo denticulato; columella subumbili- cata, rugosa, triplicataé : colore fulvo, albo bifasciato ; apertura alba. 447 Of an oval form, minutely crossed by sharp ribs and striz. From the Isle Ticao. Taken in sandy mud at a depth of six fathoms. 26. CANCELLARIA ASPERELLA (pl. xcu. f. 38. pl. xev. f. 74), Lamarck, hi. M. p. 347. £. 3. C. testd ovali, longitudinaliter costis angulatis, et transverse lineis elevatis acutis, asperrimé decussati; spd acuminata; an- fractibus ad suturam canaliferis; apertura interné costati; labio externo denticulato; columella subumbilicata, rugosa, triplicata : colore fusco, obscuré fulvo unifasciato. Much more coarsely and sharply decussated than C. elegans. From Baclayon, Island of Bohol, in seventeen fathoms water. 27. CANCELLARIA MELANOsToMA (pl. xcv. f. 78), Sowerby gunr Pro. Zool. Soc., 1848. C. testa ovali, longitudinaliter striis noduliferis et transversé strus alternatis minuté decussata; spiré acuminata, anfractibus paucis, rotundatis ; apertura ovali, magna, interné costaté; labio externo denticulato; columella expansi, anticé granulata, tripli- cat&: colore pallidé fulvo fusco, laté fasciato ; labio externo bi-ma- culato, columella fusca nigricante. The smoothness of the striz, the more oval form, the peculiar dark colour and granulations of the columella serve to distinguish this species from the preceding. Mr. Cuming possesses the only specimen we have seen. From an unknown locality. 28. CANCELLARIA OBLONGA (pl. xciii. f. 25), Sowerby, Tanc. Cat. appendix. p. 15. C. testa oblongo-ovali, striis transversis et longitudinaliter mi- uutissimé decussata; spira acuminatd, suturd profunda ; apertura oblonga, interné costati; labio externo denticulato; columella triplicata, anticé rugulos4 : colore pallidé fulvo, fasciis fuscis cincto. Much more elongated and more minutely striated than C. elegans. Found in coarse sand in the Straits of Maccassar. 29. CANCELLARIA TESSELLATA (pl. xcill. f. 32), Sowerby, Pro. Zool. Soc., 1832. p. 51. C. testé ovali, oblongd, minuté cancellaté; apertura interné costaté; labio externo interné dentato; columella crassi, ex- pansa, bi-plicata: colore in maculis fuscis quadratis disposito. 448 From the bay of Caraccas. A small oval species with the columellar lip much thickened and the colour arranged in three rows of square brown spots. 30. CANCELLARIA PuRPURIFORMIS (pl. xcv. f. 68, 70), Valenciennes, Kiener, Sp. Cocq. viv. no. 27. C. test& ovali, spiraliter striata, vix longitudinaliter costata, spira elongaté, obtusa, anfractibus rotundatis: apertura imterné striati; labio externo denticulato; columellé triplicata, anticé rugulaté: colore pallidé sulphureo. Oval, of a pale sulphur colour, with very obscure ribs, and minute spiral strie. Locality unknown. 31. CanceLzarta corrucata (pl. xevi. f. 92, 93), Hinds, Voy. Sulph. Mollusca. p. 42. C. “testé bucciniformi fusci; anfractibus quaternis, subven- tricosis, rugis parvis longitudinalibus indutis, leis impressis decussatis ; apertura oblong’, fuscd; labio intus sulcato; colu- melli plicis duabus albidis instructé; umbilico nullo; canali mediocni.”” Resembling C. Purpuriformis, but with the upper whorls much more prominent. From the bay of Guayaquill: seven fathoms, mud. 32. CANCELLARIA L&vIGATA (pl. xcn. f. 16. pl. xevi. f. 81), Sowerby, Conch. Illustr. f. 24. C. testa ovata, lavigati, crassi, spiri obtusi, anfractibus sub- angulatis, céstis levibus, in ultimo anfractu obsoletis ; apertura interne costati; labio externo interné denticulato: columella granulati, triplicata. Colore fulvo rufescente, fusco ad angulum anfractuum maculato: variat albo. Similar in form to the preceding, but smooth, the ribs only visible in the upper whorls. From New South Wales. 33. CaNcELLaRTA LacTEA (pl. xcvi. f. 105), Deshayes, H. M. p. 180. C. testa obovata, levigatee stmillima sed “ tenui, translucida, anfractibus haud angulatis. Ttis by no means clear that this species being “ thin and trans- lucid” is the same as C. laevigata, which is a very thick shell 449 with rather angulated whorls. M. Kiener seems, however, to take it for granted. 34. CanceLLaRia spirata (pl. xcii. f. 22), Lamarck, Anim. sans vert. C. testi ovata levigaté; spird turrité; anfractibus costatis, ad suturam canaliferis; apertura interné costati; labio externo levi ; columella triplicaté: colore sub-roseo, maculis fuscis ad angulum anfractuum. Resembling the coloured variety of C. /evigata, in every respect, excepting that the whorls are deeply grooved at the suture. From Garden Island, Swan River. 35. CANCELLARIA ExcAvatTa (pl. xciil. f. 18), Sowerby junr. Pro. Zool. Soc., 1848. C. testa ovata levi; spira acuminata, turriti; anfractibus ad suturam profundé excavatis ; apertura breviuscula, angulata, labio externo levi, interné costato: columelld triplicaté, umbilicata ; colore nullo. Resembling C. spirata, but having the aperture short in pro- portion to the spire and the upper part of the whorls more deeply excavated. The shell is umbilicated and white. From South Australia. 36. Cancettaria Covuruoyr (pl. xevi. f. 100, 101), Jay, Boston American Journal. C. testa parva, ovali, alb&, minuté spiraliter striaté; spira acu- minata, anfractibus rotundatis; apertura levi, ovali; columella obsoletissimé plicata. More oval in form than the following C. viridula, with the columella nearly smooth. From Massachusetts Bay. 37. CANCELLARIA VIRIDULA (pl. xcvi. f. 102), Admete viridula ; Gould. C. testé oblonga, longitudinaliter obscuré ‘costata, spiraliter costaté; spird acuminata, anfractibus rotundatis; suturd valida; apertura brevi, levi; columella obsoleté plicaté; colore nullo; epidermide pallidé viridescente. Oblong, white, with acuminated spire. Fine strize passing over nearly obsolete ribs. The folds on the columella scarcely per- ceptible. 450 38. CANCELLARIA LITTORINZFORMIS (pl. xcil. f, 5, 6,9), Sow- erby, Conch. Ilustr. f. 14. C. testé rotundati, minuté granulatim decussata; spird obtusa ; suturaé nonnunquam sub-sulcata ; apertura interné costata, colu- mella triplicaté, umbilicaté: colore fusco. A short species resembling a common Periwinkle. Minute lines crossing each other on the surface produce a fine granulation. In some varieties the spire is more produced and the whole are slightly depressed at the suture. From Ceylon. 39. CANCELLARIA VERRAUXII (pl. xcii. f. 28), Kiener, pl. vil. i S.sp. Ui. C. testa ovali, costis rugosis longitudinalibus, et lineis elevatis spiralbus cancellata: spiraé acuminati; anfractibus angulatis ; apertura interne striata, columella triplicata umbilicata, colore fusco rufescente. The spire more produced than in C. Littorineformis, with the surface cancellated ; of a ight brown-colour. Locality unknown. 40. CANCELLARIA CANCELLATA (pl. xciv. f. 51. Lam. E. M. f. 4). C. testa ventricosd, costis longitudinalibus distantibus nodu- liferis et costis transversis undulatis acutiusculis cancellaté; an- fractibus rotundato-angulatis ; apertura posticé et anticé canalicu- lata, interne costata; columella crassa, anticé rugosa, triplicata ; umbilico magno: colore per fascias duas fuscas spirales disposito ; apertura alba. A ventricose shell, cancellated by spiral rather angulated ribs, crossing and forming nodules upon distant longitudinal ones. The umbilicus is large. Found in the River Gambia, and at Malaga in Spain. 41. CANCELLARIA sIMILIs (pl. xciv. f. 42), Sowerby, Conch. Illustr. no. 9. C. testa ventricos4, costis longitudinalibus flexuosis, distantibus, et costis transversis acutis numerosis, sub-alternatis cancellata ; apertura posticé et antice canaliculaté, interné costulata, umbilico magno; colore griseo, et albo fusco fasciato. Like C. cancellata, but shorter, with the spiral ribs very much more numerous and having in some parts an interstitial rib. From Senegal. 45) 42, CANCELLARIA PULCHRA (pl. xciv. f. 41), Sowerby, Pro. Zool. Soc., 1832. p. 50. C. testa ventricosi, costis longitudinalibus angulatis, et costis spiralibus super costas longitudinales acuté angulatis, cancellata : anfractibus angulatis, ad angulum coronatis; apertura posticé et anticé canaliferd, interné costatd, margine dentato, columella crassa, rugosa, triplicati; umbilico magno, margine corrugato; colore ad angulum et in medium anfractuum fusco fasciato. Differing from C. cancel/ata in the angularity of the whorls and in the cross ribs being raised into angular points in passing over the longitudinal ones. The angle of the whorls is thus beautifully coronated and the edge of the aperture dentated. Collected by Mr. Cuming at St. Elena, in West Columbia ; sandy bottom. 43. CaNcELLARIA Curysostoma (pl. xciv. f. 39), Sowerby, Pro. Zool. Soc., p. 54. 1832. C. testa ventricosd, solidi, spiraliter alternatim sulcatd; costis longitudinalibus magnis, rugosis ; spira brevi; anfractibus rotun- dato-angulatis ; aperturad interné costataé, ad marginem crenulata ; canali sub-producto; columella crass’, rugosa, validé triplicata ; umbilico magno ; colore griseo ad angulum anfractuum fusco uni- fasciato ; apertura aurantiaca. A ventricose shell with large umbilicus and thick rugose ribs ; the whorls angulated, the aperture ribbed inside and of a brilliant orange colour. Collected by Mr. Cuming, in sand (eight to ten fathoms water) at St. Elena and Panama. 44, CANCELLARIA RUGOSA (pl. xciv. f. 44), Lamarck, BE. M. be oTOwie 6: C. test& ventricosa, solidi; spiraliter sulcaté, costis longitu- dinalibus magnis, rugosis; spiraé acuminata, anfractibus obtusé angulatis ; apertura obliqua, interné costata: labio externo crenu- lato, crasso; canali brevi; columella crassi rugosa, triplicata ; umbilico parvo, vix excavato: colore pallidissimé fulvo, rubro sparsim asperso, in medium anfractuum et ad angulum interrup- tim fasciato. Resembling C. chrysostoma, but with the umbilicus scarcely excavated, the spiral ribs not alternated, the angle of the whorls less elevated. It is of a light colour sprinkled with a reddish 452 colour with a band of colour between the ribs at the angle, and another below the centre of the ribs. From China. 45, CaANCELLARIA Ha&MastoMa (pl. xciv. f. 53, 54, 55), Sowerby, Pro. Zool. Soc., 1832, p. 54. C. testé ventricosd, solida, spiraliter sulcatd, costis longitudina- hibus magnis; anfractibus rotundato-angulatis; apertura brevi, interné costati, ad marginem crenulatd; canali brevi; columella crass, rugosa, triplicaté; umbilico magno, sulcato; colore aper- turee aurantio, anfractuum, fusco fasciato et lineato: variat albo. It is much less rugose than C. chrysostoma, and the aperture much shorter and more rounded. From Gallapagos Islands, collected by Mr. Cuming from sandy mud, in eight to sixteen fathoms. 46. CANCELLARIA SCALARINA (pl. xcvi. f. 87, 88), Chemn., Conch. t. iv. f. 1172, 1173. C. testa ovali-oblonga, turrita; costis distantibus, crassis, sub- angulatis, crenulatis, ad angulum anfractuum in angulum dupli- catum productis, interstitiis levibus; spira producta, anfractibus angulatis, ad suturam excavatis: apertura subtriangulari prope angulum posticum uniplicatd, imterné usque ad marginem costata, margine levi; canali antico producto, vix excavato; columella subrugosa, triplicata, umbilico sulcato; colore pallidissime fulvo, fusco rubescente late bifasciato: variat albo. Oblong oval, turreted ; with distant thick ribs which are cre- nulated on the right side and produced at the angle of the whorls into a double angle, the interstices are smooth, the spire is pro- duced, the whorls angular and hollow at the sutures; the aperture is partly triangular and grooved within; the umbilicus sulcated ; the colour consists of two broad bands of reddish brown. From the West Indies. 47. CANCELLARIA CRISPATA (pl. xevi. f. 89), Sowerby, Conch. Tllustr. f. 20. C. testa ovali, turriti; costis subreflexis, crenulatis, ad angulum anfractuum in angulum triplicatum productis ; interstitis leviter striatis; spird breviusculé; anfractibus angulatis, ad suturam subexcavatis; apertura ovali, posticé angulaté, prope angulum uniplicatd, interné costata; margine crenato; canali antico exca- vato; columella rugosa triplicataé ; umbilico sulcato ; colore fusco nigricante, ad angulum et in medium anfractuum albo fasciato. 453 In this species the spire is shorter than in C. sca/arina, the ribs are more numerous, they are slightly reflected, and at the angle of the whorl produced into three pomts. The colour con- sists of two dark brown bands, which are as distinct in the aperture as on the whorls. Collected by Mr. Cuming at the Isle of Negroes, Philippines, in fine sand, five fathoms water. 48, CANCELLARIA CRENIFERA (pl. xcvi. f. 84, 85, 86), Sowerby, Conch. Ilustr. f. 29. C. testa obliqué ovali, turrita; costis obliquis, distantibus, cre- nulatis, ad angulum anfractuum in angulum reflexum acutum productis ; interstitiis obsolete striatis ; spira producta, acuminata, anfractibus angulatis, ad suturam excavatis ; apertura oblique sub- triangulari, propé angulum posticum uniplicata, interné costata, ad marginem denticulata, canali antico producto ; columella levi, tri- plicaté ; umbilico levi, subtumido ; colore fusco, vel fulvo teniato. Shorter and more oblique than C. sca/arina, the ribs reflected at the angle of the whorls, and produced into a sharp point. The colour is either entirely brown or banded with brown, and ornamented by small lines across the ribs. Collected at Manilla bay by Mr. Cuming, in sandy mud, at five fathoms. 49. CANCELLARIA LAMELLOSA (pl. xciv. f. 47. enlarged, pl. xevi. f. 106. nat. size), Hinds, Voy. Sulphur, Mollusca, p. 43. C. “testa ovata, acuminati, pallidi, contabulaté; anfractibus sex, ventricosis, lamellis numerosis confertis crenatis in loco cos- tarum instructis; apertura trigoni; labro incrassato, reflexo ; columella plicis tribus parvis; umbilico magno ; canali subnullo.” Of an obliquely oval form with laminated nbs in an oblique direction, crossed by raised lines, which near the suture of the whorls are elevated into a single point each. There is a band of dark brown seen between the ribs near the angle of each whorl. Fig. 47 is a representation twice the natural length of the spe- cimens described by Mr. Hinds. Fig. 106 is a larger variety. Indian Archipelago and Cape of Good Hope. 50. CaNcELLARIA OBLIQUATA (pl. xcvi. f. 82, 83), Lamarck, Anim. sans vert. C. rosea, Bech. C. testa obliqué ovali, ventricosd ; costis obliquis parvis, minute crenulatis, numerosis, ad angulum anfractuum in angulum acutum 454. productis, ultima propé marginem in varicem elevata: insterstitiis obsolete striatis ; spira breviusculé turrrita ; anfractibus angulatis, ad angulum coronatis, ad suturam excavatis; apertura obliqué subtriangulari, propé angulum posticum uniplicata, interné cos- tata, margine levi, canali antico brevi; umbilico sulcato; colore griseo vel roseo, costis fusco fasciatim punctatis. Shorter and more oblique than C. sca/arina with the ribs smaller and produced at the angle into a single blunt point. The colour is grey or pale rose, with small spots upon the ribs. Collected by Mr. Cuming at Manilla bay in sandy mud, eight fathoms water. 51. CaNncELLARIA ARTICULARIS (pl. xevi. f. 90, 91), Sowerby, Conch. Illustr. f. 382. C. testa ovali, subventricosd; costis numerosis, crenulatis, ad angulum anfractuum im angulum obtusum productis, ultima prope marginem in varicem elevat&i; interstitiis obsoleté striatis ; spird turrité, producti; anfractibus angulatis, ad suturam excavatis ; apertura posticé canaliferé et uniplicata, interné levi, propé mar- ginem sulcata, margine levi; canali antico brevi; umbilico sul- cato ; colore roseo, costis fusco punctatis. Like C. obliquata, but less oblique, with the spire much more produced and the ribs much more rounded. Of a rose colour, with brown spots on the ribs. Collected at Ceylon by Dr. Sibbald. 52. CaNncELLaRta ELATA (pl. xevi. f. 94, 95), Hinds, Voyage of the Sulphur, Mollusca, p. 42. pl. xu. f. 8, 4. “C, testa ovata’ elongata, acuminata, anfractibus septenis, costa- tis, superné angulatis, lineis elevatis decussatis ; sutura profanda ; aperiurd ovali; peritremate superné disjuncto; labro intus sul- cato; columella triplicaté; plicd inferiore maxim&; umbilico parvo, sub-occulto ; canali inflexo.” Found at Panama, in thirty fathoms water. 53. CANCELLARIA FUNICULATA (pl. xcvi. f. 96, 97), Hinds, Voy. Sul. p. 43. pl. xu. f. 5, 6. “©, testa ovali, elongaté; anfractibus senis, costatis, superné subangulatis ; costis subdistantibus, elevatis, rotundatis, nodulosis, lineis elevatis decussatis; sutura profundd; labro intus sulcato ; columella plicis tribus parvis; umbilico marginato: canali sub- nullo.” 455 From the Gulf of Magdalena, California. Seven fathoms, sandy mud. 54. CANCELLARIA TEXTILIs (pl. xcui. f. 34), Avener, Sp. Coq. viv. Gen. Cancellaria. p. 10. pl. vu. f. 1. C. testa turrita, obliqué ovali, costis tuberculatis subdistan- tibus; spiri producté; anfractibus angulatis, ad suturam exca- vatis: apertura posticé canaliferd et. uniplicaté, interné costata ; columella triplicati; umbilico parvo: colore fusco, tuberculis costarum albis. More oblique and with fewer ribs than C. sca/ata. The colour is dark brown, with the tubercles of the ribs white. From the Molluccas. 55. CANCELLARIA scaLaTa (pl. xciii. f. 26), Sowerby, Conch. Illustr. f. 27. C. testa turrité; costis numerosis, noduliferis ; spiré producta ; anfractibus angulatis, ad suturam excavatis; aperturd posticc canaliferé et uniplicatdé, interné costaté; columella triplicata ; umbilico parvo; colore fulvo, apertura alba. The ribs are more distinctly tuberculated than in C. articularis, and the umbilicus is much smaller. The colour is pale fawn, varying to pink in the upper whorls. Collected by Dr. Sibbald on the sands at Ceylon. 56. CanceLiaria contaButara (pl. xciii. f. 19, 23), Sowerby, Conch. Mlustr. f. 28. C. pusilla, Sowerby, Conch. Ilustr. f. 34. inclusa. C. testé turrité ventricosd, costis numerosis, noduliferis, spira breviusculd, anfractibus contabulatis; apertura magna, postice angulata, interné costaté; umbilico mediocri columella triplicata; colore pallide straminea, apertura alba. Like C. textis and C. scalata in general characters, but the upper part of the whorls presenting a broad, flat surface. Of a pale straw colour, with the aperture white and undefined, orange spots on the angle of the whorls. C. pusidla, figured im Conch. Illustr., is but a young specimen of this. Collected by Dr. Sibbald on the sands at Ceylon. 57. CANCELLARIA rovEoLaTa (pl. xc. f, 30, 31), Sowerby, Junr., Pro. Zool. Soc. 1848. C. testa oblongo-ovali, turrita, levigaté; obsolete costata ; 456 spird producté ; anfractibus angulatis, ad suturam excavatis, ad angulum sub-coronatis: apertura triangulari, levi ; columella triplicaté ; umbilico mediocri ; colore fusco, vel fulvo teniato. From the sands at Algoa bay. Turreted, smooth, with distant and very obsolete ribs, the whorls of the spire are very deeply exca- vated near the suture. Of the two specimens collected by Mr. Cuming, one is entirely brown, and the other is beautifully lineated. 58. CANCELLARIA costTiFERA (pl. xcv. f. 65, 66, 71), Sowerby, Conch. Illustr. f. 31. C. testa turrita, oblongo-ovali ; costis distantibus, subcrenulatis, validis, ad angulum anfractuum elevatis: spirad acuminata, anfrac-. tibus acute angulatis; apertura interné obsoleté costata ; posticé sub-angulatd, colore pallidé fulvo, vel interstitiis roseo, vel fusco. Taken in nine fathoms water, coarse sand, at the Island of Burea; by Mr. Cuming. The specimens figured in the Conch. Illustr., were worn, dead shells. 59. CaNCELLARIA BICOLOR (pl. xciv. f. 49, 50; pl. xev. f. 69), Hinds, Voy. Sulph. Mollusca. p. 43. pl. 12. f. 18. 14. C. testa ventricosa, turrité ; spira brevi; anfractibus contabu- latis; costis distantibus, crassis, crenulatis ; interstitiis levibus apertura subtriangulari, posticé uniplicata, interne costaté crassa ; canali producto, umbilico triangulari ad marginem magno levi ; colore pallidissimé fulvo, fusco laté fasciato; variat roseo. A ventricose, angular species, with a flat area on the upper part of each whorl, a large umbilicus and triangular aperture. Nearly white, with a broad brown band in the centre; which, in one variety, is spread nearly all over the whorl. Another variety is of a pink colour. From Catbalonga and the Island of Samoa. 60. Canceitaria costata (pl. xcv. f. 60, 61. pl. xevi. f. 103), Gray ? Conch. Ilustr. f. 42. C. rigida, Sowerby, Zool. Pro. p. 53, inclusa. C. test& ventricosa, turrita rugosa spira brevi, anfractibus con- tabulatis ; costis distantibus, crassis, rugosis; ad suturam lami- natis ; apertur’ subtriangulari, posticé uniplicato, interné costata, margine crassi; canali producto ; e umbilico magno, sulcato ; colore aurantio, vel fusco nigrescente. This species resembles C. bic olor, but is rugose in every part. The 457 colour of one variety is orange, that of the other is nearly black. I do not think C. rigida of Sowerby is distinct. From the sands in the river Gambia. 61. CancELLaRIA BuLLATA (pl. xciv. f. 56), Sowerby, Pro. Zool. Soc. 1832, p. 51. C. testa ventricosd, rugosi ; anfractibus angulatis, ad angulum tuberculatis, ad suturam excavatis; umbilico magno ; apertura magna, levi; columella biplicaté, colore cinereo, apertura alba. The most ventricose of all the species, of a cimereous brown colour, tuberculated at the edge of the whorls. Found in the gulf of Nocoya. 62. CANCELLARIA TUBERCULATA (pl. xciv. f. 52), Sowerby, Pro. Zool. Soc. 1832. p. 51. C. testa ventricosi, rugosi ; anfractibus angulatis, ad angulum et in seriebus tribus validé tuberculatis, ad suturam excavatis ; apertura magna levi, ad marginem undulata, columella biplicata ; umbilico magno, striato ; colore nullo. It is hike C. Bullata, but is rugose and strongly tuberculated. Tt is a white shell. From Iquiqui, in sandy mud, six to twelve fathoms water. 63. CANCELLARIA BREVIS (pl. xcili. f. 21), Sowerby, Pro. Zool. Soc. 1832. p. 52. C. test ventricos’, rugosi, anfractibus angulatis, ad suturam excavatis ; costis crassis, tuberculatis, umbilico magno, crenulato, apertura triangulari; columelli biplicaté; colore griseo, fusco maculato. From Puerto Portrero, and St. Elena. Collected by Mr. Cuming, in sandy mud, six to twelve fathoms water. 64. CANCELLARIA GONIOSTOMA (pl. xciv. f. 40.), Sowerby, Pro. Zool. Soc. 1832. p. 51. C. testa trigond, levi, anfractibus contabulatis ; costis crassis, raris, tuberculatis, praecipué ad angulum anfractuum ; umbilico maximo; apertura triangulari, margine crenato; columella bipli- caté: colore anticé pallidé fulvo, posticé castaneo, costis et peri- tremate fusco punctatis. At Conchagua, in sandy mud, eight fathoms, by Mr. Cuming. 65. CANCELLARIA TRIGONOsTOMA (pl. xciv. f. 45, 46), Sowerby, Conch. Ilustr. f. 44. 455 C. testa turnité; anfractibus trigonis, ad basin angustatis, ad angulum coronatis, in medio sulcato ; umbilico maximo, margine crenulato; aperturé trigond, columella triplicaté ; colore pallideé violaceo. From Ceylon, widely different from all other species. 66. CANCELLARIA sEMIDISJUNCTA (pl. xev. f. 62, 68), Sowerby, Junr. Pro. Zool Soc. 1848. C. test& ovali ventricosa, turrita, spiraliter sulcaté; anfractibus angulatis, ad suturam profundé disjunctis, ultima disjuncta : umbilico maximo, costato ; apertura triangulari ; columella tripli- cata, colore fulvo, fusco longitudinaliter fasciato. Cagayan, island of Mindinao, in twenty-five fathoms, sandy mud, by Mr. Cuming. 67. CaNcELLARIA anTIQuATA (pl. xcil. f. 27), Hinds, Zoo- logy of the Sulphur, p. 48. pl. xn. f. 17, 18. Testa ovata, acuminata, contabulata, albidé ; anfractibus sep- tenis, planulatis, costatis, transversim striatis ; costis acutis, superné spinis cavis desinentibus ; apertura trigona ; labro reflexo ; columella plicis tribus minimis ; umbilico maximo. A most elegant little species with a trigonal aperture, large umbilicus, and the whorls separated from each other by a series of pits. From the shores of New Guinea; taken in coarse sand, twenty-two fathoms. 68. CANCELLARIA acumINaTA (pl. xcil. f. 1), Sowerby, Pro. Zool. Soc. 1832. p. 58. C. test& ovali, levi, spiraliter obsoleté striata; spira sub-elon- gata, acuminaté ; anfractibus rotundato-angulatis ; apertura interné plicata, columella triplicata, posteriori magna: labio externo ad canalem emarginato. Colore fasciatim fulvo ; apertura alba. This shell, dredged by Mr. Cuming in sandy mud, at a depth of twelve fathoms at Guacomayo in Central America, is like C. reticulata in general form and character, but the ribs and sides are obsolete, and the spire is much longer in proportion to the aperture. 459 CANCELLARIA. LIST OF FIGURES IN PLATES XCII. TO XCV1. (The Figure after each name 1s the number of the Species.) Fig. 27. 28 29 30, 31 32 33 C. acuminata, Sp. 68. . — ovata, 7. . — decussata, 24. . —- solida, 5. . —— Littorineformis, 38. . —— indentata, 18, . — candida, 10. . —— Littorineformis, 38. . — Buccinoides, 17. . — undulata, 15. . — Clavatula, 20. . —gemmulata, 23. . — Cassidiformis, 1. . —levigata, 32. . — reticulata, 9. . —excavata, 35. . —contabulata, 56. . — Cumingiana, 4. . —~ brevis, 63. . — spirata, 34. . — contabulata, 56. . — Mitreeformis, 19. . — oblonga, 28. . —scalata, 55. — antiquata, 67. . — Verrauxii, 32. . — Spengleriana, 2. . — foveolata, 57. . — tessellata, 29. . — piscatorum, 22. Fig. 34. C. textilis, Sp. 54. 35. — Mitreformis, 19. 36. — elegans, 25. 37. — obesa, 8. 38. — Asperella, 26. 39. —— chrysostoma, 43. 40. — goniostoma, 64. 41. — pulchra, 42. 42. —similis, 41. 43. — albida, 12. 44, — rugosa, 44. 45,46. — trigonostoma, 80. 47. —lamellosa, 49. 48, —urceolata, 13. 49, 50. — bicolor, 59. 51. — cancellata, 40. 52, — tuberculata, 62. 53 to 55. — hemastoma, 45. 56. — bullata, 61. 57. — nodulifera, 3. 58, 59. — granosa, 15. 60, 61. — costata, 60. 62, 63. — semidisjuncta, 66. 64. — Bulbulus, 6. 65, 66. — costifera, 58. 67. — Clavatula, 20. 68, 70. — Purpuriformis, 30. 69. — bicolor, 59. 71. — costifera, 58. 72, 73. — Australis, 11. Fig. 74. C. Asperella, Sp. 26. 75, 76. teeniata, 21. 77. —ventricosa, 14. 78. — Melanostoma, 27. 79. — undulata, 16. 80. — indentata, 18. 81. — levigata, 32. 82, 83. — obliquata, 50. 84 to 86. —crenifera, 48. 87, 88. —scalarina, 46. 89. — crispata, 47. Na 460 90, 91. C. articularis, Sp. 51. 92, 93. — corrugata, 31. 94,95. —elata, 52. 96, 97. —funiculata, 53. 98, 99, 100, 101. 102. — viridula, 37. 103. 104. 105. 106. not a Cancellaria. — Couthoyi, 36. — costata var. rigida, 60. — elegans, 25. — lactea, 33. — lamellosa, 49. ALPHABETICAL INDEX. acuminata, Sp. 68. f. 1. albida, 12. f. 43. antiquata, 67. f. 27. articularis, 51. f. 90, 91. asperella, 26. f. 38, 74. Australis, 11. f. 72, 73. bicolor, 59. f. 49, 50, 69. brevis, 63. f. 21. Buccinoides, 17. f. 10, 11. bulbulus, 6. f. 64. bullata, 61. f. 56. cancellata, 40, f. 51. candida, 10. f. 8. Cassidiformis, 1. f. 15. chrysostoma, 43, f. 39. clavatula, 20. f. 18, 67. contabulata, 56. f. 19, 23. corrugata, 31. f. 92, 93. costata, 60. f. 60, 61, 103. costifera, 58. f. 65, 66, 71. Couthoyi, 36. f. 100, 101. cremata, see indentata, 18. f. 80. crenifera, 48. f. 84 to 86. crispata, Sp. 47. f. 89. Cumingiana, 4. f. 20, decussata, 24. f. 3. elata, 52. f. 94, 95. elegans, 25. f. 36, 104. excavata, 35. f. 18. foveolata, 57. f. 30, 81. funiculata, 53. f. 96, 97. gemmulata, 23. f. 14. goniostoma, 64. f. 40. granosa, 15. f. 58, 59. heemastoma, 45. f.53 to 55. indentata, 18, f. 7, 80. imperialis, see nodulifera, 3. f. 57. lactea, 33. f. 105. lamellosa, 49. f. 47, 106. laevigata, 32. f. 16, 81. Littorineformis, 38. f. 5, 6, 9. melanostoma, 27. f. 78. Mitreeformis, 19. f. 24, 35. nodulifera, 8. f. 57. nodulosa, see piscatorum, 22. f. 33. obesa, 8. f. 37. obliquata, Sp. 50. f. 82, 83. oblonga, 28. f. 25. ovata, 7. f. 2. piscatorum, 22. f. 33. pulchra, 42. f. 41. Purpuriformis, 30. f. 68, 70. pusilla, contabulata, 56. f. 19. reticulata, 9. f. 17. rigida, see costata, 60. f. 103. rosea, see obliquata, 50. f. 82, 83. rugosa, 44, f. 44, scalarina, 46. f. 87, 88. scalata, 55. f. 26. semidisjuncta, 66. f. 62, 63. sunilis, 41. f. 42. 461 solida, Sp. 5. f. 4. Spengleriana, 2. f. 29. spirata, 34. f. 22. teeniata, 21. f. 75, 76. tessellata, 29. f. 32. textilis, 54. f. 34. trigonostoma, 80. f. 45, 46, Tritonis, see Spengleriana, 2. f. 29. tuberculata, 62. f. 52. undulata, 16. f. 12, 79. uniplicata, see Mitreeformis, 19, f. 35. urceolata, 13. f. 48. ventricosa, 14. f. 77. Verrauxii, 39. f. 28. viridula, 37. f. 102. 463 MONOGRAPH OF THE GENUS NAUTILUS. Char. Gen. Molluscum cephalopodum. Testa univalvis, libera, suborbicularis, convoluta, concamerata; anfractibus contiguis ; septis transversis, extis concavis, siphunculo perforato, margi- nibus integris : apertura amplissima. By the common consent of the more modern naturalists, this genus retains the name of Navritus, although it is not very nearly related to the Nautilus of Pliny, which is called Argonauta by the moderns, to which the commonly received and elegantly embodied fiction ‘Learn of the little Nautilus to sail” of right belongs, and has no reference whatever to the present genus. Few are the recent species of Nautilus as yet known, five being the utmost, of which one may be only a sexual variation of the common N. Pompilius, and oue other has only very lately been discovered. Of fossil species there are many, belonging to most of the geological series, from the carboniferous limestone upwards. We believe that all the fossil species are distinct from the recent, more particularly we are convinced that this is the case with the species found at Dax, whose siphon is so very remarkably dispro- portionate.* 1. Navrizus Pompruius (pl. xevi. f.1., and pl. xevui. f. 6), LTninn. Testa suborbicularis, subdepressa, pallescens, postice ferrugineo radiatim multistrigata, strigis ad centrum continuis, supra dorsum numerosioribus, contiguis ; apertura oblongo-cordaté, angustiori ; umbilico clauso. This, which is by far the commonest species, is somewhat * Tn this opinion we are supported by M. Basterot, who has pointed out the dis- tinguishing characters, and names the fossil, W. Atwrz. 464: orbicular in its general form, but not spheroidal, being con- siderably depressed ; it is generally of a pale colour, and nearly wlite, though sometimes covered with a rusty epidermis; the posterior part is covered with radiating, irregular, reddish-brown stripes ; which continue to the centre, and are more numerous and close-set on the dorsal part ; in front it is destitute of stripes. The aperture is of an oblong heart-shape, and rather narrow, and the umbilicus is completely covered. 2. Nautitus ambieuus (pl. xevil. f. 2), nobis. Testa suborbicularis, subventricosa, pallescens, posticé ferru- gineo radiatim multistrigata, strigis ad centrum discontinuis, supra dorsum paucioribus, subcontiguis; apertur&é oblongo-cor- data, laté ; umbilico clauso. This may possibly be only a variety of the foregoing ; there are, however, several differences which appear to be constant. It is nearly the same in general form, but not so much depressed, its aperture is oblong-cordate, but wider than that of V. Pompilius : it is usually nearly white, with reddish-brown radiating stripes, which are rather close-set on the dorsal part, but do not continue to the centre ; the umbilicus is entirely covered. 3. Navurinus umsizicatus (pl. xevui. f. 7), Lzster, (not Linn.) N. scrobiculatus, Solr. MS. Dillwyn. Descr. Catal. p. 38. Testa suborbicularis, subdepressa, utrinque laté umbilicata, marginibus umbilicorum rotundato-angulatis; lateribus subru- gosis; pallescens, posticé radiatim ferrugineo strigata, strigis ad dorsum contiguis, versus centrum discontinuis, umbilico ferru- gineo, radiatim substrigato. This species is entitled to the name of wmdbilicatus, because that name was given to it by Lister, and Linné’s wmbilicatus is not a Nautilus, but one of the minute Foraminifera. We have, there- fore, dropped Solander’s manuscript name, afterwards published by Dillwyn, of serobcculatus. ‘This is one of three umbilicated species in which the outer edge of the umbilicus forms a rounded angle; the umbilicus is also larger than in the other species. The streaks of colour, which are close-set on the dorsum, do not con- tinue on the sides towards the umbilicus. 4, NAUTILUS MACROMPHALUS (pl. xcvi. f. 4, 5), xobis. Testa suborbicularis, subventricosa, utrinque umbilicata, mar- ginibus umbilicorum rotundatis; pallescens, posticé radiatim fer- 465 rugineo strigata, strigis ad umbilicum continuis ; margine interno umbilico albicante, externo ferruginea. In form this species most nearly resembles WV. ambiguus, though in its colouring it is like V. Pompilius. Its large umbilicus, with a rounded margin, at once distinguishes it from both. 5. Navritus steNompHa.us (pl. xevii. f. 3), wodis. Testa suborbicularis, subventricosa, utrinque umbilicata, um- bilico angusto, margine umbilici subinterno leviter angulato ; pallescens, posticé radiatim ferrugineo strigata, strigis ad dorsum contiguis, ad centrum discontinuis ; apertura rotundato-cordata. Nearly similar in shape to WV. macromphalus, but distinguished by the smallness of its umbilicus, the subinternal margin of which is slightly angular: in colouring it is like V. ambiguus. NAUTILUS. EXPLANATION OF PLATES XCVII. AND XCVIIL. Fig. 1. N. pompilius, sp. 1. 2... ambiguus, 2. 3. .. stenomphalus, 5. 4,5. .. macromphalus, 4. 6. .. pompilius, 1. 7. «e umbilicatus, 3. i FeO vary Cnt ne h ne if River 467 MONOGRAPH OF THE GENUS OVULUM. Char. Gen. Molluscum Tracheliopodum marinum. ‘Testa con- voluta, ovalis vel fusiformis, spird czlat&; apertura bicanalifera, columella levi. Operculum nullum. The spire is enclosed by the last whorl. The aperture has a canal at each end. The columella is smooth. The mantle of the animal covers a considerable portion of the shell. Ovutum Ovom (pl. xcix. f.1, 2,3), Bulla Ovum, Awctorwm. Ovula oviformis, Zam. Anim. s. vert. vii. p. 366. O. testa ovali, polité, alba; canalibus brevibus, ad extremitates emarginatis: apertura anticé sub-aperta, sanguinea ; labio externo ints crenulato, anticé breviusculo, labio interno posticé tumido, anticé subtortuoso, emarginato, ad canalem posticum angustato sub-spirali, ad canalem anticum crasso rectiusculo. Oval, polished, white, with short ends; the aperture widened at the lower part, inside of a brownish red colour ; outer lip cre- nulated within, shortened at the lower end; inner lip with a rounded elevation on the upper part of the body, whorl, at the posterior canal narrowed, and then sub-spiral; at the anterior canal thickened and rather straight. Found in the Indian Ocean, and in the Society and Philippine Islands. 2. OvuLtum aneuLosum (pl. xcix. f. 4.5), Lam. Anim. s. vert. vil. p. 367. O. costellata, Zam. Ann. du Mus. xvi. p. 110. Bulla imperialis, Dillwyn. QO. testa ventricos’, subangulaté, levi, alb ; dorso tumido, anguloso ; obscure costellato ; canalibus brevibus, anticé ad extre- mitatem emarginata ; apertura angusta, ints violaced; labio ex- 468 terno crasso, intiis crenulato; anticé sub-angustato; ad canalem posticum recedente, ad canalem anticum rectiusculo. Oval in general form, angular at the back, and otherwise dif- fering from O. ovum, in the retrocession of the inner lip at the posterior canal, and in the delicate violet colour of the mouth. From the Friendly Islands, Humph. Tanzebar, Cuming. 3. OvuLum concinnum (pl. ci. f. 86, 87), Sowerby, junr. Moll. Voy. Samarang. O. testa parva, ventricosa, angulata, alba vel rose’, minutissimé striata; dorso tumido, anguloso; canalibus brevibus obtusis, in- tegris; aperturd angusti; labio externo intus denticulato, in medio anguloso, labio interno posticé tumorem angulosum cre- nulatum ferente, interné longitudinaliter sulcato, anticé angustato, ad canalem posticum recedente, ad canalem anticum prominente, angustato, sub-uniplicato. A miniature resemblance of O. angulosum, more angular, minutely striated, with a groove along the inner lip, and an elevated, an- gular tumidity on the body whorl near the angle. It is white, or pale rose. From the Island of Capul, Philippines, by Mr. Cuming; and off Loo-Choo, by Sir E. Belcher, in the Samarang. 4. Ovutum tacteum ( pl. ci. f. 67 to 69), Lamarck, Anim. s. vert. vil. p. 368. O. testa ovata, levi, albi; dorso ventricoso, sub-angulato, ob- scuré costellato; canalibus brevissimis, obtusis, vix emarginatis, apertura angusté ; labio externo complanato, intis dentato ; labio interno intis longitudinaliter concavo, posticé ad canalem angu- loso, anticé prope canalem angustato, ad canalem sub-uniplicato. Resembling O. verrucoswm in general form, but has not the cir- cular “ worts” which distinguish that species. From the Pacific Ocean, Spec. Conch. From Masbaté, Zanze- bar, Capul, and Philippines, Cuming. 5. Ovuntum verrucosvM (pl. ci. f. 78, 79), Lamarck. Anim. s. vert. vi. 367. O. testa ventricosa ovali-subangulata, levi, alba ; dorso tumido, leviter striato, in medio angulato, anticé et posticé prope extremi- tates verruca circulari instructa; canalibus brevissimis, ad extre- mitates validé emarginatis, roseis; labio externo in medio lato, angulato intis dentato, ad extremitates sub-productis; labio in- terno breviusculo, sub-complanato intus compresso, anticé an- gustato. 469 Oval in general form, angular at the back, with a circular small swelling at each extremity, encircled by a cicatrix. Found in the Indian Ocean, and Islands Guimaras, Philippines. 6. OvuLum BREVE ( pl. ci. f. 70, 71), Sowerby, Sp. Conch. No. 1. p. 5. O. testa ovali, alba, levi, canalibus brevibus, integris, apertura angusta, labio externo intis crenulato, labio interno margine ele- vato, posticé tumido, anticé ad canalem uniplicato. Resembling O. dactewm in general form, but with the margin of the inner lip raised into a flexuous keel along the front of the shell. Locality unknown. 7. OvuLum marearita (pl. ci. f. 93, 94). “ Liceum marga- rita,’ Humph. ined. O. testa sub-globos4, subpyriformi, alb&; dorso obscuré sub- costellaté, canalibus brevibus, integris; aperturé angusti, labio exter crasso levi, intus crenulato; posticé labium imternum su- perante, in medio lato; labio interno levi, posticé tumorem cras- sum subrotundatum ferente, ad canalem recedente, anticé tumido ad canalem uniplicato, inttis excavato. A smooth, rather globose white shell, with a rather thick tumi- dity on the body whorl. From Puerto Galero and Ticao, Philippines, Cuming. Friendly Islands, Humphry. 8. OvuLum BuLLA (pl. ci. f. 82, 83.) Sowerby, junr. Moll. Voy. Samarang, p. 21. pl. vi. f. 5. a, d. O. testA ventricos’, subcylindraced, levi, anticé sub-acumi- nata; canalibus brevissimis integris; labio externo in medio sub-rotundo, intus crenulato; labio interno posticé tumorem parvum ferente, ad canalem angustato, uniplicato, intus paululum excavato. Differing from O. margarita and O. punctatum in form, being more cylindrical and very narrow at the anterior extremity. Brought in the Samarang, from the China Seas. 9. OvuLUM UMBILICATUM (pl ci. f. 88, 89), Sowerby, junr., Pro. Zool. Soc., 1848. O. testé globos& sub-pyriformi, alba, roseo pallidé tincto, dorso 470 ad extremitates rubro lineato, ad terminum posticum umbilicato ; apertura sub-aperté; labio externo angustato, ints crenulato, posticé labium internum superante ; labio interno posticé tumo- rem elevatum denticulatum ferente, ad canalem lineari, anticé bi- costellato, ad canalem uniplicato. Agreeing with O. margarita in general appearance, but the outer lip is thinner, the mouth wider, the upper callosity elevated and denticulated, and there is a small umbilicus behind the pos- terior termination of the outer lip. From Ticao, Philippines ; Cuming. 10. Ovutum marernatum (pl. xcix. f. 9, 10), Sowerby, Sp. Conch. No. 1. p. 5. O. testa ventricos’, sub-pyriformi, alba, lined aurantié ad mar- ginem cincta, dorso costellato, extremitatibus obtusis ; apertura in medio sub-contracta, labio externo intis crenulato, in medio prominente ; labio externo levi, tts excavato, posticé tumorem obliquum, crenulatum ferente, ad canalem emarginato, anticé tumido, ad canalem uniplicato. Of an oval ventricose form, slightly narrowed at the lower end, the outer lip prominent in the centre, the enamel of the inner lip and the dorsal edge of the margin defined by a strong orange line of colour. Locality unknown. 11. Ovutum pyriroRite (pl. ci. f. 72, 73), Sowerby, Sp. Conch. No. 1. p. 5. O. testi ventricos’ pyriformi, striata, fulvo nubeculata ; canali- bus sub-productis, antico subreflexo, emarginato ; aperturd anticé sub-aperta ; labio externo lato, ints crenulato, ad canalem posti- cum planulato ; labio interno expanso, inttis sub-excavato, posticé angulosim tumido, ad angulum nullo, anticé tortuoso, tumido. The most pyriform of all the species. The posterior part of the outer lip is flattened at its juncture with the inner. Colour, clouded, yellowish-brown. From New South Wales. 12. Ovutum apriaticum (xcix. f. 13, 14), Sowerby, Sp. Conch. No. 1. p. 4. O. testa ovali, ventricosA sub-pyriformi, alba, pellucida, dorso »% . . - . A obscure sub-costellato; canalibus brevibus, integris; apertura aperté; labio externo angusto, intis crenulato, labio interno levi, 471 posticé tumorem obliquum ferente, ad canalem tenwi, tortuoso, - anticé sub-tortuoso intis sub-excavato, ad canalem acuminato. Oval, or rather pear-shaped, ventricose, thin, white ; the aperture not very narrow, the canals shghtly produced, tumidity of the body whorl oblique. From the Adriatic Sea. 13. Ovutum carNneum (pl. ci. f. 74 to 77), Lamarck, Anim. s. vert. vil. p. 368. O. testa ovali, ventricosd, rubro flavescente; dorso prope ex- tremitates minutissimé striato; canalibus brevibus, integris ; apertura angusti ; labio externo intts crenulato, ad extremitates angustato ; labio mterno leevi, expanso, posticé tumido, ad canalem angustato recedente, anticé angusto, intis excavato, ad canalem peené uniplicato. Resembling O. adriaticum, but more solid, rather more angular ; of a beautiful red colour, softened into flesh-tint, slightly striated near the extremities. From the Mediterranean. The white variety was brought by Mr. Cuming from Ticao, Philippines. 14. Ovutum nuBecutatum (pl. ci. f. 80, 81), Sowerby, junr. Moll. Samarang, pl. vi. f. 12. a, 4, ¢. O. test ventricosi, sub-pyriformi, pallide rubro vel fulvo nu- beculato ; dorso obscure costellato ; canalibus brevibus, vix emar- ginatis; apertwrd angusti, labio externo intus crenulato, prope medium sub-complanato; labio interno tumorem elevatum cras- sum ferente, ad canalem breve et recedente, anticé tumido, intis excavato, ad canalem sub-uniplhiato. More pyriform (that is, with the most ventricose part higher) than O. carneum, the posterior canal is shorter, and the posterior tumidity more elevated. ‘The colour consists of pale or strong fulvous red, arranged in three cloudy bands. Taken near the Island of Basilan. : 16. Ovutum puNctatuM (pl. ci. f. 90 to 92), Duclos. Guerin. Mag. Zool. 1828. O. testé ventricosi, sub-pyriformi, pallidé rose4 ; dorso punctis vel maculis sex rubris ornato, ad marginem rubro pallidé lineato ; apertura angustata, labio externo crasso, levi, intts crenulato, posticé Jabium internum superante, sub-producto ; labio interno levi, postice tumorem elevatum, sub-angulatum, crenulatuin 472 ferente, ad canalem recedente ; anticé angustato, ad canalem sub- uniplicato, intts excavato. This exquisite species resembles O. margaritum in form, but the callosity on the body whorl is more angular and crenulated. There are six spots arranged in two rows on the back, which, in one variety, are spread into wavy patches of red. Capt. Belcher brought specimens in the Samarang, from the China seas ; and Mr. Cuming*collected others at Capul and Batan- zas, Phihppines. 16. Ovutum srrtatuLum (pl. ci. f. 84, 85), Sowerby, Sp. Conch. 1. p. 7. O. testa parvd, oblong’, angulosi, minuté striata, alba, vel rose ad extremitates rubra, dorso tumido, subangulato ; canalibus sub-productis, paululim ad extremitates emarginatis; apertura angustaé; labio externo sub-complanato, dentato; labio mterno posticé tumorem triangularem prominentem crenulatum ferente, iterné longitudinaliter sulcato, anticé tumido, angustato, ad can- alem posticum recedente, ad canalem anticum sub-uniplicato. Of an angular, oblong form, minutely striated at the back, the extremities produced, and a triangular tumidity on the posterior part of the body whorl, the teeth of the outer lip reach nearly to the outer margin. The white shell was brought by the Samarang. The small rose-coloured specimen with red tips, was brought by Mr. Cuming, from Batanzas, Philippines ; and by Lieut. Belcher, off Loo-Choo. 17. Ovutum BuLtatum (pl. ci. f. 95, 96), Sowerby, junr., Moll. Samarang, pl. vi. f. 13. a, 0. O. testa ovali-oblongd, minuté striata, roseo tincta, ad extremi- tates fusco lineat&; dorso ad marginem sulcato ; canalibus sub-pro- ductis, integris; apertura angust4, labio externo intis crenato, complanato; labio interno tumido, levi, intis depresso, sub- suleato, posticé bullulam prominentem crenulatam ferente, ad canalem sub-tortuoso, anticé sub-excavato, ad canalem uni- plicato. Of an oval form, striated at the back. The inner lip of the posterior canal slightly tortuous, the outer lip flattened, slanting inwards and crenulated, the body whorl in front near the posterior angle having a raised, rounded, prominent pustule. By the Samarang. Caramata Passage, near Sincapore. Ten fathoms. 473 18. OvuLum porsvosum (pl. ci. f. 97, 98), Hinds, Moll. Voy. Sulphur, p. 47. pl. xvi. £3, 4. “O testa elongato-ovata, minutissimeé striati, utrinque sub-acu- minatié; dorso supra medium rotundato, inferné attenuato, labro anticé planulato, sulcato; columellé inferné sub-excavatd, intis plicd longitudinali munita.” In some degree resembling O. sériatudum, but the thick part is higher and more rounded; the outer edge of the outer lip, and the callosity and edge of the canal are crenulated. Found at the straits of Malacca, in mud, at the depth of nine fathoms. 19. OvuLum HorDaceum (pl. ci. f. 110 to 112), Lamarck, Anim. s. vert. vil. p. 369. O. testé oblonga, sub-cylindraced, striatd flavidd rubescente, vel rubré supra medium angulati, ad angulum crenulatum, ad ex- tremitates angustata ; labio externo posticé angulato, extis crenu- lato, intis minuté denticulato, ad canales emarginato, labio interno posticé tumido, crenulato, ad canalem acuminato, anticé intis longitudinaliter uniplicato, ad canalem acuminato. A rather cylindrical, striated shell, with a carinated angle above the centre ; the outer lip is crenulated at the outer edge, as well as on the flat, ner surface. From the Hast Indian Archipelago. 20. OvuLum coarcratum (pl. ci. f. 108, 109), Sowerby, junr., Moll. Voy. Samarang. pl. vi. f. 2. a, 6. O. testa elongata, sub-cylindracea, fulva, striaté, supra medium gibbosd, ad extremitates coarctatd, labio externo paululdm in- crassato, leevi, anticé sub-angulato; labio imterno intis sub-de- presso, ad extremitates acuminato. This shell resembles O. hordacewm in some degree, but is not angular, and has the outer lip smooth. It may, however, very possibly be a young shell. Brought in the Samarang from the Straits of Sunda, near Java. 21. OvuLum pentatum (pl. ci. f. 101, 102), Sowerby, junr. Moll. Samarang. pl. vi. f. 4. a, 0. O. testé parva, oblong’, sub-angulatdé, minuté striata; pallidé rosed, fusco rubescente variegat&é; canalibus sub-productis, emar- ginatis; apertura angustata; labio externo breviusculo, compla- 474 nato, ints et ad extremitates usque ad marginem dentato; labio interno levi, intts longitudinaliter sulcato, posticé tumorem ele- vatum crenulatum ferente, ad canalem recedente; anticé angus- tato, tumido; ad canalem sub-uniplicato. Not so angular as O. striatudwm, and with the teeth of the outer lip forming denticulations at the outer margin. ‘The colour is pale rose, strengthened at the margin and extremities, with two longitudinal waved bands at the back. Brought in the Samarang. Caramata Passage. 22. Ovutum Formosum (pl. ci. f. 99, 100), Sowerby, junr., Moll. Samarang, pl. vi. f. 6. a, 6. O. testé elongaté, in medio sub-angulata, violaced, ad extremi- tates fuscd, lineis puncturatis cincté; canalibus brevibus, validé emarginatis ; apertura angusté; labio externo in medio sub- angulato, denticulato, ad extremitates brevi, posticé ad marginem externum dentato; labio interno levi, longitudinaliter sulcato, posticé tumido, ad canalem angusto, rectiusculo, anticé ad canalem rectiusculo. Of an elongate angular form, and remarkably bright violet colour with yellow tips; the spiral strize regular and beautifully punctured, the extremities rather produced, the outer lip short at the ends, and denticulated; the denticulations reaching the outer margin at the posterior extremity. Brought in the Samarang. ast coast of Borneo. 23. Ovutum Frumentum (pl. a. f. 108, 104), Sowerby, Sp. Conch. No. tp. 77. “©. test&é oblongi, dorso transversim gibboso, rubescente, transversim albido-unifasciaté ; labio externo margine planulato intts denticulato ; labio columellari superné calloso, infra depresso ; extremitatibus sub-acuminatis obtusiusculis.” The only specimen of this shell which I have seen is the one in the British Museum; it is of a crimson colour, with a white band in the centre of the back. It is not unlike O. Seminulum ; but the ends are narrower, and the outer lip is denticulated. Locality unknown. 24. OvuLum triticeum (pl. c. f. 20, 21), Lamarck, Anim. s. vert. vil. p. 361. O. testi longitudinaliter ovali, levi, rubra; canalibus brevius- culis ; apertura aperta, labio externo intts crenulato, anticé sub- 475 emarginato ; labro interno posticé tumorem rotundatum, elevatum, ferente, ad canalem sub-uniplicato, intus sub-excavato. Of a rather oval form, smooth, crimson; the outer lip denticu- lated ; the callosity on the upper part of the body whorl smooth, oblique, rounded; the imner hp shghtly excavated near the anterior. Locality unknown. 25. OvuLuMm sEMINULUM (pl. c. f. 41, 42), Sowerby, Sp. Conch. Now Lop. t. O. testi ovali sub-clongaté, levi, purpurea vel rosed, obtusa ; canalibus brevibus ; labio externo levi; labio interno tumido, anticé paululim excavato. A violet or rose-coloured small shell, of the cylindrical clays, very slightly angular in the middle, very obtuse at each extremity : the outer lip is smooth, and the callosity of the body whorl very slightly raised. From the Friendly Islands. 26. Ovutum ostusum (pl. c. f. 22 to 24), Sowerby, Sp. Conch. No 1. p. 1. O. test& solidd sub-angulata, utrinque obtusd pallidissima cinerea, vel fulva levi, canalibus breviusculis, integris ; apertura anticé sub-aperté ; labio externo crasso, levi; labio imterné, tumido, posticé sub-spiraliter uniplicato, ad canalem sub-tortuo, anticé emarginato, paululum depresso, ad canalem sub-tortuo. A small smooth solid species, rather angular in the centre, and obtuse at the extremities ; of a pale ash colour ; the aperture rather widened near the anterior extremity ; the outer lip thick, smooth ; the tumidity at the posterior part of the body whorl, shghtly raised, sub-spiral ; the inner lip shghtly emarginated and depressed near the anterior canal. The coloured variety was brought in the Samarang from the China sea. 27. Ovutum sEcaLE (pl. c. f. 25 to 27), Sowerby, Sp. Conch. No. 1. p. 1. O. test oblong’, ovali m medio obsoletissimé angulato, levi, alba, vel fusci rubro marginata, vel pallidissimé violacea ; canali- bus sub-productis, paulultm emargmatis ; labio externo crasso, levi, anticé sub-angulato ; labiointerno (atate) tumido, posticé 276 sub-spiraliter uniplicato, ad canalem sub-producto, sub-tortuoso ; anticé emarginato, paululim depresso, ad canalem angustato, sub-tortuoso. The varieties figured, although rather different in form and appearance, bear the same general characters, and cannot be dis- tinguished by any definite peculiarities from each other. We are not acquainted with the locality of the more thickly enamelled red and cream-coloured varieties which are in the collection of Mr. Cuming, the others are among those brought in the Samarang from the Hast Indian Archipelago. The four following species are not easily or definitely distinguishable, still, a glance at the figures will perhaps be thought to justify the attempted division, which, after all, must be arbitrary. 28. OvuLum FormicaRium (pl. c. f. 47, 48), Sowerby, Sp. Conch. No. 1. p. 8. O. test’ Ovulo secali simillima sed angustiore, minore. On the whole, thinner, more cylindrical, and smaller than O. secale. The specimens figured were brought in the Samarang from the Hast Indian Archipelago. 29. OvuLuM sIMILE (pl. c. f. 28, 29), Sowerby, juur., Pro. Zool. Soc. 1842. O. testa oblonga, ovali, spiraliter striata, fulva; canalibus sub- productis, emarginatis ; labio externo crasso, levi, anticé sub- arcuato, utrinque breviusculo; labio interno tumido, posticé spi- raliter uniplicato, ad canalem sub-tortuo, acuminato, anticé subde- presso, intus longitudinaliter unicarinato, ad canalem rectiusculo acuminato. Like O. secale, but spirally striated. Mr. Cuming’s collection, locality unknown. 30. OvuLum acuminatum (pl. c. f. 49, 50), Sowerby, junr., Moll. Voy. Samarang, pl. vi. f. 1. a, 6. QO. testa sub-ovali, in medio sub-ventricosd, ad extremitates sub-rostrata, levi, alba, longitudinaliter fasciaté ; dorso margine distincto; canalibus ad dorsum elevatis ; labio externo crasso, levi, ad extremitates recedente, anticé sub-angulato, ad canalem emar- ginato ; labio interno tumido, intus unicarinato, posticé spiraliter uniplicato, ad canales rectiusculo. F Differing from O. secale in being proportionately ventricose in 477 the middle, and having the extremities turned upwards at the back. Brought in the Samarang, from the coast of Bilaton. 31. OvuLtum acicuLaRE (pl.c. f. 43 to 46), Lamarck, Anim. s. vert. vi. p. 369. O. testa elongata’, sub-cylindracea, pellucida, levi, flavida vel purpurea, ad extremitates obtus’; labio externo paululim incras- sato, anticé subangulato ; labio interno rectiusculo sub-planulato, in carinam longitudinalem elevato, posticé leviter uniplicato, anticé sub-emarginato, ad canalem sub-tortuo, producto. This elongated species partakes more or less of the form of the Gorgonia stems to which it adheres, the columella is generally somewhat flattened, and the aperture obtuse at the extremity of the canals. The colour is violet, dark, or reddish purple, or very pale fawn, or yellow. The dark purple specimen belongs to Mr. Cuming ; the beautiful yellow variety, to Mr. Hanley. 32. Ovutum suB-RostratuM (pl. c. f. 39, 40), Sowerby, junr., Pro. Zool. Soc., 1848. O. testa oblonga, levi, rubra-violascente, ad extremitates sub-pro- ducté, acuminaté; dorso margine distincto; apertura angustatd, anticé sub-angulataé; labio externo levi, ad extremitates rece- dente ; labio interno tumido, inttis unicarinato, posticé spiraliter uniplicato, ad canales rectiusculo, producto. Like Secale, but with the extremities more produced, and straight. Mr. Cuming’s collection, from Honduras Bay. 33. OvuLuM Lancroxatum (pl. c. f. 35, 36), Sowerby, junr., Pro. Zool. Soc., 1848. O. testa elongata, angustatd, minutissimé striata, aurantid ru- bescente seu albidi; canalibus sub-productis, emarginatis ; aper- turd angustata, labio externo planulato, crasso, breviusculo, in medio rectiusculo, anticé angulatim flexuoso ; labio interno tumido, rubro longitudinaliter marginato, posticé ad canalem producto, sub-tortuoso, anticé intis longitudinaliter sulcato, uniplicato, ad canalem angusto, rectiusculo, acuminato. A very remarkable shell, presenting the appearance of an O. aci- culare much lengthened out ; the aperture is very narrow except- ing towards the anterior, where the outer lip is bowed out. The under surface of the shell is flat; the inner lip edged with a red line. In Mr. Cuming’s collection, from Sorsogon, Island Luzon, Philippmes. ‘The white variety (?) is from Malacca. 478 34. OvuLuM DEFLEXUM (pl. c. f. 37, 38), Sowerby, junr., Pro. Zool. Soc., 1848. O. testi ovali-elongati, levigatié, albidi; extremitatibus de- flexis ; apertura angustati ; labio externo crasso, lato, complanato, anticé arcuato, breviusculo ; labio interno longitudinaliter tumido, complanato, posticé uniplicato, anticé ad canalem acuminato. Resembling O. aciculare, but with a broad, flattened, outer lip, and the extremities turned downward. From Ticao, Philippmes. Mr. Cuming. 35. Ovutum unipLicatum (pl. c. f. 30, 31, 32), Sowerby, junr., Pro. Zool. Soc. 1848. O. testi elongaté, sub-cylindricé, pellucidd, minutissimé striata, aurantii, seu violaceé'; anticé sub-acuminata, posticé sub-rotun- dati; dorso margine distincto, apertura sub-aperta, labio externo ‘paululiim incrassato, ad extremitates recedente, anticé sub-angu- lato, ad canalem emarginato, labio interno intts sub-depresso, posticé spiraliter uniphcato, ad canalem tortuo, versus labrum ex- ternum deflecto, anticé sub-tortuo, acuminato. The pale violet variety was dredged by Mr. Cuming, near Charleston, 8. Carolina, a darker one, at Rio Janeiro, and the locality of the others is unknown. ‘This species resembles O. aci- culare, but is more acuminated at the anterior extremity, it is rather more ventricose, finely striated, the spiral fold near the anterior canal is more decided, and less oblique, and the edge of the canal above it invariably leans towards the outer lip. 36. Ovutum arertum (pl. ci. f. 106, 107), Sowerby, junr. O. testi levigaté elongato-ovali, fulvi-rufescente ; canalibus breviusculis ; apertura aperti, labio externo tenui, anticé sub- emarginata; labio interno posticé ad canalem sub-reflexo, anticé sub-tortuoso tenui ; ints sub-depresso. Of a form between that of O. treticewm, and that of secale; of a dull reddish-brown colour. In the specimen which we have, the lip is not thickened nor reflected, although it appears to be a full-grown shell ; if it be so, it will form a companion to O. Patulum. We are indebted for the specimen to Mr. Hanley, who is unac- quainted with its locality. 37. Ovutum Patutum (pl. ci. f. 105, 113). Bulla Patula, auctorum. Simnia Patula, Leach. 479 O. testi laevigata, ovali, albida, canalibus breviusculis ; apertura aperta ; labio externo tenui, haud inflexo; labio interno postice ad canalem uniplicato, anticé umbilicato, margine depresso. This British species, and the O. apertum, are the only ones in which the outer lip is not thickened and inflected, and which would compose the genus “ Simnia” of Leach. 38. OvuLum erBBosum (pl. xcix. f. 15 to 19), Lamarck, Bulla gibbosa, awct. O. testé oblonga, utrinque obtusa, levi, albidd seu aurantiaco- fulva, dorso in medio angulatim gibboso; canalibus brevibus, latis, antico sub-emarginato ; aperturé anticé aperta, labio externo levi, crasso, in medio angulato, anticé sub-emarginato ; labio interno levi, gibboso, intis sub-depresso. Of an oblong form, with an angular ridge in the centre of the back, and the extremities obtuse. Collected at Panama by Mr. Cuming. 89. OvuLum remaRGinaTuM (pl. xcix. f. 11, 12), Sowerby, Sp. Conch. No. 1. p. 7. O. testa oblonga, utrinque obtusa, substriata, pallide fulva vel violaced, dorso ad marginem roseo, in medio angulatim gibboso canalibus brevibus, emarginatis ; apertura anticé aperti, labio externo levi, crasso, in medio angulato, ad extremitates labium internum longitudine superante ; labio interno levi, gibboso, intis sub-depresso. Like O. gibbosum, but with the canals emarginated, and the inner lip longer than the outer at both ends. Collected at St. Elena by Mr. Cuming. OvuLUM INTERMEDIvM (pl. c. f. 61, 62), Sowerby, Sp. Conch. No. 1. p. 9. O. test oblonga, levi, in medio angulata, pallidé fulva, sub- tus subaurantiaco ; canalibus sub-productis, emarginatis ; apertura sub-aperté ; labio externo levi, ad extremitates brevi, recedente ; labio mterno levi, gibbosi, posticé tumorem crenulatum ferente, ad canalem producti, anticé ad canalem angustatd, producti; intts sub-depressi. Named O. intermedium, on account of its forming a passage from O. gibbosum, and the species with produced extremities. From Brazil. 480 41. OVULUM SUB-REFLEXUM (pl. c. f. 33, 34), Sowerby, junr., Moll. Samarang, pl. vi. f. 10. a, 0. O. testa oblonga, albida, leevigati, sub-rostraté; dorso in medio sub-angulato; extremitatibus sub-recurvis ; apertura angustata ; canalibus sub-emarginatis; labio externo livi, rotundato, supra medium sub-angulato, anticé sub-angulatim arcuato ; labio interno posticé tumido, ad canalem producto, recedente, intts longitudi- naliter depresso, anticé ad canalem producto. An oblong, smooth, white shell, with the extremities rather produced, blunt and turned upwards. The outer lip is smooth, round, and flexuous. Brought in the Samarang by Sir E. Belcher, from the coast of Bilaton. 42. Ovutum spuura (pl. c. f. 63, 64), Lamarck. Anim. s. vert. vi. p. 370. O. testi sub-ovali, rostrata, striata, pallidé fulva rubescente ; canalibus sub-contractis, sub-truncatis ; apertura aperta; labio externo crasso, levi, rotundato, arcuato, anticé sub-angulato, ad extremitates breviusculo; labio interno in medio sub-ventricoso, levi, posticé uniplicato, ad canalem producto, tortuo, anticé interne depressiusculo, ad canalem producto, rectiusculo. The shortest and most ventricose of the rostrated species. The outer lip is thick and arched, the inner lip has a transverse fold at the base of the posterior canal. From the Pacific ocean. 43. Ovutum BrRostrE (pl. c. f. 65, 66), Lamarck, Anim. s. vert. vi. p. 370. O. testa elongata fusiformi, rose, in medio albifasciata, vel pallidé fulva, in medio laevigata, sub-ventricosi, ad extremitates striata, recti-rostraté ; apertura anticé subaperti, labio externo crasso, sub-flexuoso, posticé ad canalem attenuato, anticé angula- tim arcuato ad canalem contracto; labio mterno in medio sub- ventricoso, ad basin rostrarum sub-tumido, ad canales rectiusculo. Smooth in the centre, which is shghtly ventricose, and striated at the ends, which are narrow, and rather straight. At the ante- rior part of the aperture, the outer lip, after widening at the usual place, contracts rather suddenly, and recedes at the canal. The pale variety was taken in sandy mud, and brought by Dr. Sibbald from Japan. The beautiful red variety with the white band in the middle is from Sincapore. 481 44, OvuLuM PHILIPPINARUM (pl. c. f. 57, 58), Sowerby, junr., Pro. Zool. Soc. 1848. O. testi elongata, gradatim rostrata, levigatd, fulvé; subtis albida ; apertur’ angustaté ad canales truncati ; labio externo levi, alba, rectiusculo, anticé angulatim contracto, labio interno levi, intis anticé sub-emarginato. The contraction towards the extremities 1s more gradual, and the outer lip is straighter than in O. dzrostre, and the canals are truncated at the extremities. The colour is pale fawn, darker in the aperture, and nearly white at the lips. Several specimens were brought by Mr. Cuming from the Isl. of Capul, Philippines. 45. Ovutum ‘Gracie (pl. c. f. 51, 52, 53), Sowerby, junr., Moll. Samarang, pl. vi. f. a, 4, ¢. O. testa elongata, fusiformi, minutissimé striata, ad extremitates attenuata, recurvi; labio externo levi, sub-angulatim arcuato ; labio interno levi, in medio sub-ventricoso, ad extremitates attenu- ato, acuminato; colore pallidé fulvo, dorso prope marginem longitudinaliter rubro-fasciato. Fusiform, striated, more gradually ventricose in the centre, and less attenuated at the canals than either O. dong ugirostratum or O. recurvum. At the back, near the margin, is an irregular longitudinal band of dull red, interrupted in the centre. Brought from the east coast of Borneo in the Samarang. 46. OvuLum recurvom (pl. c. f. 54, 55,56), Sowerby, puns, Moll. Samarang, pl. vi. f. 3 a, 4, ¢ O. testa elongatd,in medio ventricosd, sub-angulata; levigata, ad extremitates attenuata, recurva ; apertura in medio lineari, anticé aperté; labio externo crasso, antics angulatim arcuato, ad extre- mitates truncato; labio interno in medio ventricoso, ad extremi- tates attenuato, recurvo. The canals are not so long and attenuated asin O. /ongi- rostratum, the aperture, excepting at the anterior opening, is linear, the outer lip is thick. The colour is of the palest fawn. Brought in the Samarang from the China seas. 47. OvuLuM LonerrostRatuM (pl. c. f. 59, 60), Sowerby, Sp. Conch. No. 1. p. 9. 482 O. test’ elongati, in medio ventricosi, sub-angulata, levi, ad canales sub-recedente, anticé sub-angulaté, labio interno levi, ad canales attenuato. A beautiful shell, rather angular in the centre, with the canals elongated, narrow, and gracefully curved backwards ; the colour in the aperture is delicate pink, the rest of the shell a very pale pinkish fawn. It is from the Adriatic Sea. 48. Ovotum votva (pl. xcix. f. 6, 7, 8), Zam. Anim. s. vert. vil. 370. O. testi ovali, utrinque longirostrata, fulva, spiraliter striata ; apertura aperté; labio externo crasso, obscuré crenulato, in medio arcuato, ad extremitates breve, spiraliter recedente, labio interno in medio ventricoso, ad canales recurvo, truncato. This well-known species is ventricose in the middle, and with elongated, recurved extremities. It is of a fawn colour, inclining to pink at the margin. The comparatively smooth variety figured is from the Island of Mindinao, by Mr. Cuming. The other is from China. UNIDENTIFIED SPECIES. O. album, Dufo, Ann. Sci. Nat. 1840, p. 186. O. nigerinum, Dufo, Ibid. O. gallinaceum and O. corrugatum would be more properly referred to the genus Hrato. Fig. 1 to 3 4,5 6 to 8 9, 10 11, 12 13, 14. 15 to 19. 20, 21 22 to 24. 25 to 27 28, 29 30 to 32. 33, 34 35, 36 37, 38 39, 40 41, 42. 43 to 46 47,48 49, 50 51 to 53 54 to 56 57, 58 59, 60 61, 62 483 OVULUM. PRR RAPP RAP RRA AAA AAAI AADAPAADADAAAA An PLATES XOIX, C, CI. . O. Ovum, Sp. 1. . — angulosum, 2. . — Volva, 48. . — marginatum, 10. . — emarginatum, 39. — Adriaticum, 12. — gibbosum, 38. . — triticeum, 24, — obtusum, 26. . — secale, 27. . — simile, 29. — uniplicatum, 35. . — sub-reflexum, 41. . — lanceolatum, 33. . — deflexum, 34. . — sub-rostratum, 32. — Seminulum, 25. . — Aciculare, 31. . — formicarium, 28. . — acuminatum, 30. . — gracile, 45. . — recurvum, 46. . — Philippinarum, 44. . — longirostratum, 47. . — intermedium, 40. Fig. 63, 64. O. Spelta, 42. 65, 66. — birostre, 43. 67 to 69. — lacteum, 4. 70, 71. — breve, 6. 72, 73. — pyriforme, 11. 74 to 77. — carneum, 13. 78, 79. — verrucosum, 5. 80, 81. — nubeculatum, 14. 82, 83. — Bulla, 8. 84, 85. — striatulum, 16. 86, 87. — concinnum, 3. 88, 89. — umbilicatum, 9. 90 to 92. — punctatum, 15. 93, 94. — Margarita, 7. 95,96. — bullulatum, 17. 97, 98. — dorsuosum, 18. 99, 100. — formosum, 22. 101, 102. — dentatum, 21. 108, 104. — frumentum, 23. 105. — patulum, 37. 106, 107. — apertum, 36. 108, 109. — coarctatum, 20. 110 to 112..— Hordaceum, 19. 113. — patulum, 37. 434 ALPHABETICAL INDEX. aciculare, Sp. 31. f. 43 to 46. lacteum, Sp. 4. f. 67 to 69. acuminatum, 30. f. 49, 50. lanceolatum, 33. f. 35, 36. Adriaticum, 12. f. 18, 14. longirostratum, 47. f. 59, 60. album, «nidentified Margarita, 7. f. 93, 94. angulosum, 2. f. 4, 5. marginatum, 10. f. 9, 10. apertum, 36. f. 106, 107. nigerinum, unidentified. birostre, 43. f. 65, 66. nubeculatum, 14. f. 80, 81. breve, 6. f. 70, 71. obtusum, 26. f. 22 to 24. Bulla, 8. f. 82, 83. oviformis, see Ovum, 1. f. 1 to 3. bullulatum, 17. f. 95, 96. Ovum, 1. f. 1 to 3. carneum, 13. f. 74 to 77. | patulum, 37. f. 105, 113. coarctatum, 20. f. 108, 109. Philippinarum, 44. f. 57, 58. concinnum, 3. f. 86, 87. punctatum, 15. f. 90 to 92. corrugatum, gen. ERATO. pyriforme, 11. f. 72, 73. deflexum, 34. f. 37, 38. recurvum, 46. f. 54 to 56. dentatum, 21. f. 101, 102. secale, 27. f. 25 to 27. dorsuosum, 18. f. 97, 98. seminulum, 25. f. 41, 42. emarginatum, 39. f. 11, 12. simile, 29. f. 28, 29. formicarium, 28, f. 47, 48. Spelta, 42. f. 63, 64. formosum, 22. f. 99. 100. striatulum, 16. f. 84, 85. frumentum, 238. f. 103, 104. sub-reflexum, 41. f. 33, 34. gallinaceum, gen. Erato. sub-rostratum, 32. f. 39, 40. gibbosum, 38. f. 15 to 19. triticeum, 24. f, 20, 21. gracile, 45. f. 51 to 53. umbilicatum, 9. f. 88, 89. hordaceum, 19. f. 110 to 112. uniplicatum, 35. f. 30 to 32. imperialis, see angulosum, 2. f. 4, 5. verrucosum, 5. f. 78, 79. intermedium, 40. f. 61, 62. Volva, 48. f. 6 to 8. MONOGRAPH OF THE GENUS PHOLAS. Char. Gen. Mollusecum acephalum terebrans. Testa bivalvis, ple- rumque subcylindracea, tenuis, alba, plerumque scabra, epidermide induta, valvee equales, infra umbones processis duobus arcuatis. A well-known genus of boring Mollusca, with an equivalve, colourless shell, of a more or less cylindrical form, generally covered with an epidermis, which, in some species, is so thin as to be scarcely perceptible. Most of the species have a kind of protecting shield on the umbones, or between the dorsal edges, consisting of one or more laminated pieces. Some species are gaping at the anterior ventral margin ; and in others, when mature, the hiatus is closed by a more or less horny lamina. In the species separated by some authors under the generic name Pholadidaa, the posterior integuments closing the valves are lengthened at the termination and formed into a cup, and in others this cup surmounts a shell tube, formed for the protection of the posterior tubes of the animal. In one character all species of true Pholades agree, and that is, in having a pair of curved processes advancing from under the umbones. In the genera Xylophaga and Triomphalia these are wanting. 1. Puotas Dacryzus (pl. cit. f. 10, 11, pl. ev. £..47), Linn. 1110. Chemn. f. 857. Ph. testa aperta, elongata, posticé subattenuata ; costis angulatis, acute imbricatis, versus extremitatem evanidis ; laminis dorsalibus duo magnis anticis, una elongata postica. Elongated, with the anterior ventral margin widely gaping, and ending in a point; ribs angular, sharply imbricated, spreading over the anterior and middle parts of the shell. The two broad accessory valves on the umbones have the nucleus posterior and lateral; one long posterior valve. Fig. 47 represents a mere dwarf distortion. In sandstone, at low water. Many parts of Great Britain. 3R 436 2. PHonas Curnoensis (pl. cu. f. 1, 2), Avzg, Zool. Journ. vol. v. p. 384. Campechensis, Gime/. 3216? Candida, var. Nonnul. Ph. testi aperta, elongata, subcylindricé, ad extremitates rotun- data; costis validis, arcuatim inbricatis, omnino radiaté; laminis dors alibus, ad umbones duabus longitudinalibus, tim una trans- versali, und elongata posticé. Elongated, rounded at both ends, ribs strong, radiating ali over the shell, famter towards the posterior end, with arched imbrica- tions. Accessory valves, two, on the umbones, large, with apices posterior-central, one across, small, and one longitudinal, pos- terior. Gmelin’s Ph. Campechensis may possibly be the same species, although named as inhabiting the bay of Campeche, while this is from Chiloe (Cuming) ; but the figure and description are too ob- scure to be depended upon. 3. Puonas Laqurata (pl. cin. f. 19, 20), Sowerby, junr., Pro. Zool. Soc., 1849. Ph. testa aperti, elongata, in medio ventricosi ; costis arcuatim imbricatis, posticé acute armatis; ad marginem dorsalem area plana; laminis dorsalibus, ad umbones duabus longitudinalibus, tin und transversali, und elongata postica. This shell differs from PA. Chiloensis in having a small plain area at the posterior dorsal margin. It also exhibits the pomted imbrications on the posterior ribs, and the arched ones on the central ribs, in stronger development. Collected at the Isle of Plata by Mr. Cuming. 4. Protas Ortenratis (pl. ci. f. 8, 4), Gmel. 83216. Chemn. f. 860. Ph. test aperti, elongata, posticé attenuata ; costis crebris angu- latim imbricatis anticé radiati, posticé levigaté ; laminis dorsali- bus, uni ad umbones magna, tim und parva transversali, posticé und elongata. Open, elongated, with the nibs radiating over half the shell, the posterior part being smooth. ‘The principal dorsal valve broad, with the apex prominent, one small cross-piece, and one narrow and long. Found at the mouth of the Indus, Kurachee, Scinde. 187 5. PHoras costa®@ (pl. ci. f. 8, 9), Lenn. 1111. Ph. testé apertd, elongatd, ventricos’ ; costis validis subrotun- datis, imbricatis, omnind radiat’; lamina dorsali triangulari, cornea. Ventricose, with thick, imbricated ribs radiating over the whole shell. The dorsal shield is broad, triangular, horny, with a cen- tral apex, placed upon a triangular disc, formed by the reflection of the dorsal edge of the shell over the umbones. Collected in rocks at Mexico, and United States, America. 6. Puotas parva (pl. civ. f. 31, 32), Pennant. Ph. testa aperta, ventricosd, anticé emarginata, angulari; costis radiatis et lineis concentricis cancellaté; ad marginem dorsalem reflexd; lamina dorsali angustatd, apice postica. Open, ventricose, gaping angularly in front, with the umbones nearly central, shielded by a narrow curved plate placed on the reflected margins of the dorsal edge. Found in many ports of Great Britain. 7. Pootas Manitiz (pl. cui. f. 17, 18), Sowerby, junr., Pro. Zool. Soc., 1849. Ph. testé aperti, elongata, anticé subangulaté; costis subdis- tantibus, acutissimé imbricatis, ommind radiati; umbonibus sub- anticis; ad marginem dorsalem, ante umbones, are’ pland; lamina dorsali parva, arcuata. Much longer and narrower than PA. similis, with the dorsal shield much smaller in proportion. From Manilla bay. Crming. 8. Puotas sruiis (pl. cil. f. 12,18, 14), Gray, MS. Brit. Museum. Ph. test& late aperta, ventricosd, tenui, anticé acuté angulata, posticé subattenuatd; costis distantibus, angulatis, acuté imbri- catis, anticé radiaté; umbonibus subcentralibus; ad marginem dorsalem, ante umbones, area pland ; lamina dorsali magni, arcuata, apice terminali. A rather ventricose shell, angular at the anterior extremity, and very widely gaping at the ventral margin. ‘The ribs are few, sharply imbricated, and spreading over the anterior part of the shell only. The umbones are nearer the centre than in PA. Manilla, and the dorsal shield is much larger in proportion. From New Zealand. Larle. 3.R: w 488 9. PHonas canprpa (pl. ciii. f£. 21, 22, 28), Linn. Syst. Nat. ritops | alle A bs Ph. testa tenui, gradatim aperta, elongata, posticé subattenuata, anticé subrotundaté; costis evanidis, ad extremitatem anticam acute imbricatis ; lamin’ dorsali parva, elongata. Thin, gradually opening at the ventral margin, rounded at the anterior extremity, attenuated posteriorly ; ribs faint, excepting at oe anterior part of the shell, where they are sharply imbricated. ritain. 10. PHo.as rraeixis (pl. eviii. f. 92, 98), Sowerby, junr., Pro. Zool. Soc., 1849. Ph. testa apertd, elongata, anticé emarginata, angulari; costis radiatis et lineis concentricis cancellaté; ad marginem dorsalem reflexd ; lamind dorsali angusté, arcuata. Resembling Ps. parva, but much narrower, and with the um- bones placed much nearer the anterior extremity. Collected by Mr. Cuming in soft stone, low water; Bassy, Isle of Samar, Philippines. ; 11. Puotas AvsrratastZ (pl. cvi. f. 73), Gray, MS. Brit. Museum. Ph. testé gradatim aperta, elongati, anticé subrotundaté; um- bonibus prope extremitatem anticam positis; costis distantibus, obtuse imbricatis, omnino radiati; ad marginem dorsalem, ante umbones, are& plan; lamina dorsali una, breviuscula (?). Much resembling our British PA. candida, but a larger and stronger shell, with the ribs much more obtusely imbricated, and the umbones nearer to the anterior extremity. I have not seen the dorsal shield, but should imagine it to be much shorter in pro- portion than that of P/. candida. Abundant in Australia. 12. PHotas truncata (pl. civ. f. 29, 30), Say, American Journal of Science, vol. ii. p. 821. Ph. testé subcylindricé, anticé angulatim aperta, ad extremi- tatem angulatd, posticé ad extremitatem quadraté; lineis elevatis, concentricis, radiatim imbricatis, ornat&; posticé levigaté ; lamina dorsali elongata, areuati, posticé subquadrata. This shell is remarkable for its cylindrical and truncated form. The radiating ribs are only seen by the imbrications, or flutings, on the concentric ridges. 489 13. PHotas cructrera (pl. civ. f. 24, 25, 26), Sowerby, Pro. Zool. Soc., 1834, p. 69. Ph. test utrinque obtusa, haud late apertd; costis creberrimis, imbricatis, omnind radiat&; lamina dorsali corned, ad umbones super marginem reflexum in crucis forma posit. The dorsal margin of the shell is reflected over the umbones so as make a cross-shaped platform for the reception of the accessory valve, which is horny, and in maturity spreads over the dorsal margins. The ribs are close, and closely imbricated. The ventral opening is not large. Found in soft sandstone at half-tide on the shores of the island of Puma, in the Gulf of Guayaquil; in soft stone at low water in the bay of Caraccas, West Colombia; and in hard clay, im thirteen fathoms water, in the Gulf of Nocoiyo, in Central America. 14. Puotas crispata (pl. civ. £.37), Linn. Syst. Nat. 1111. Ph. testa ventricosa brevi, in medio canali constricto divisa ; anticé angulari, late hiante, imbricis acutis radiatim ornatié ; pos- ticé substriata, subrotundata. With the exception of Pd. latissima, this species is the broadest of any in proportion to its width. It gapes very widely in front, and is divided in the centre by a grove, the anterior portion being imbricated by strongly raised angular points in radiating series, and the posterior part nearly smooth. There is no accessory valve ; but the dorsal edge is strongly reflected over the umbones, and the tubes of the mollusk are protected by an external epider- midous case. Great Britain. 15. Portas constricra (pl. civ. f. 27, 28), Sowerby, junr., Pro. Zool. Soc., 1849. Ph. test& ventricosd, anticé utrinque aperté; in medio area an- x Seen amare cea es i uf gusta, constricté, obliqueé divisd ; anticé radiatim scabros4, posticé minuté concentricé striaté; ad marginem dorsalem posticé reflexa. Resembling Pd. parva, but without any accessory valve, and having a double dividing line across the centre, as in PA. papyracea, &e. Collected by Mr. Cuming at the Straits of Sunda. 16. PHotas Latissima (pl. cm. f. 15, 16), Sowerby, junr., Pro. Zool. Soc., 1849. Ph. testa subquadrata, subcompressd, apertd, anticé angulata, 4.90 posticé truncati; costis moniliferis radiatis et lmeis concentricis cancellaté; umbonibus subcentralibus, margine dorsali reflexo. A wide, rather flat shell, widely gapmg im front, and truncated at the posterior extremity, with radiating ribs forming knots on the raised lines of growth. It appears to be without accessory valves. Taken in Manilla Bay. Cuming. 17. Puotas Darwinit (pl. evi. f. 76,77), Sowerby, junr., Pro. Zool. Soc., 1849. Ph. testi brevi, laté aperté, in medio are constricta divisa ; anticé radiatim scabra ; ad marginem ventralem levi, recedente, ad marginem dorsalem arcuatim reflexi; posticé concentricé striata, ad extremitatem posticam margine validé recurvo. A very remarkable shell, rather short, widely opening in front, divided in the centre by a constricted grove. Before the grove it is roughened by undulated lines of growth, forming radiating ribs. The ventral margin is smooth, and recedes towards the dorsal part, where it is turned over so as to form a broad reflected edge reaching to the umbones. Posterior to the dividing lune it is marked by raised lines of growth, and gapes widely ; at the end there is a broad extension of the shell curved outwards. Collected by Mr. Darwin at Chiloe. 18. Puotas Terepinzrormis (pl. evi. f. 97, 98), Sowerby, junr., Pro. Zool. Soc., 1849. Ph. test’ globosa, aperta, in medio divisi; anticé margine ven- trali subangulatd ; costis laqueatis concentricis ornatd ; posticé brevi, leevigaté ; lamin’ dorsali und subquadrata, super marginem reflexam teste posita. A small, globose species, in some degree resembling the young of Ph. clavata, &c., but differently sculptured ; and although it has the appearance of a mature shell, it is quite possible that it may belong to that group, and its being in so soft a substance as wax may be the reason for the enclosing lamine not being formed. This and the next species (PA. aperta) were at first thought to belong to the genus Xylophaga; but, on examination, were found to possess the curved processes in the hinge, which are charac- teristic of the genus Pholas, and are not found in Xylophaga. Found in cakes of floating wax on the coast of Cuba. 491 19. PHotas apErra (pl. evin. f. 99, 100), Sowerby, junr., Pro. Zool. Soc., 1849. Ph. test& globosa, apert’, in medio divis’; anticé margine ven- trali subangulatd; costis laqueatis concentricis ornati; posticé leevigatd, subattenuata ; laminis dorsalibus quatuor, parvis. A small, globose species, differing from Ph. Teredinaformis in having the posterior end longer, and in having two pairs of small dorsal laminee. Being found in mahogany, the shell has a dark reddish tint. In other respects it is subject to the same remarks that are applied to Ph. Teredineformis. Floating wood, Straits of Sunda and Banca. Cuming. 20. PHonas Catrrorntica (pl. ci. f. 5, 6,7), Conrad, Aun. Nat. Sc. Phil. i. p. 236. t. 18. f. 4. Ph. testa subcylindricd, ventricosd, magna, in partes tres obliqué divisi; parte antici prope marginem ventralem sublevigata, dorso usque ad medium imbricatim costato; parte medid plana, epider- mide crass4 induti; parte posticd obliqué triangulari, transversé epidermide laminati, ad terminum truncati; margine ventrali in- tegumento diviso, elongato, corneo, celato ; margine dorsali integu- mento triplicato, elongato ad umbones, angustato, celato. A very large shell, with the surface of each valve divided into three parts: the anterior part, ventrally smooth, dorsally costated ; the intermediate part plain; the terminal part, with the epidermis forming transverse lamine in relief. The ventral margin is covered by along, divided, folded integument, and the dorsal margin by another, the anterior part of which is bilobate on each side, and the posterior part is elongated and trifold. The speci- men figured (half the natural length) is in Mr. Cuming’s collec- tion. Mr. Metcalfe possesses one, not so perfect, but about five inches long. Sandstone, deep water, Monte Rey, California. Mr. Hartweg. 21. Puonas Incr (pl. ev. f. 45, 46), Sowerby, juar., Pro. Zool. Soc., 1849. Ph. testa subcylindricd, brevi, ventricosd, in partes tres obliqué divisi; parte antici prope marginem ventralem sublevigata, dorso usque ad medium minuté longitudinaliter et transverse striata ; parte media pland, epidermide crass’ indutd ; parte pos- ticd oblique triangulari, epidermide in laminis serratis producta ; margine dorsali integumento in partes quatuor diviso, quarum duas anticas breviusculas, duas posticas elongatas, integras. 4.92 Differmg from Ph. Californica in the dorsal side of the anterior part, which is finely striated in both directions ; in the epider- midal lamine, which are beautifully serrated ; in the integumental covering of the dorsal edge, which is divided into four parts, of which the posterior pair are long, and one overlapping the other ; and in the absence of integumental lamine on the ventral margin. Collected by Capt. Ince, R.N., in coral rock at Raine’s Island, Torres Straits. 22. Protas acuminata (pl. ev. f. 48, 49, 50), Sowerby, Pro. Zool. Soc., 1834. Ph. testé subpyriformi, clausi, ventricosi ; in partes tres ob- liqué divisi; parte antici prope marginem ventralem levigatd, in medio et ad dorsum minuté radiatim scabra; parte media laté plani, epidermide crassi induti; parte postici acuté angulata, attenuata, fascii serraté marginata, epidermide laminis angulatis indut&é; margine ventrali integumento elongato, integro ; margine dorsali integumento ad umbones magno, subquadrato, posticé altero elongato, prope umbones rotundato ; marginibus ventralibus valvarum unidentatis. Shell pyriform, rounded anteriorly, and tapering towards the end. Surface of the valves divided obliquely by serrated groves into three parts; the anterior part divided again longitudinally; the ventral side smooth, horny; the dorsal side finely ribbed in both directions, the middle part plain, with a thick epidermis ; in the posterior part, the epidermis is raised in smooth lamine, corresponding in shape with the attenuated and acutely angulated termination. The external integuments are, one narrow, folding along the ventral margin ; one large, subquadrate upon, and ante- rior to, the umbones; the other, adjomimg by a rounded lobe, and tapering off to the posterior end of the dorsal edge: these are not quite divided by a central lie. In limestone rocks at low water, at Panama. Cuming. 23. PHonas quapRizonatis (pl. cvin. f. $8, 89), Spengler. Ph. testa clausa, subcylindrica, ventricosi, in partes tres transver- sales divisa ; parte antici prope marginem levigaté, in medio et ad dorsum minut? striata ; ; parte mediand plana ; parte postici epider- mide laminis serratis induté ; margine dorsali integumento subtes- taceo in partes quatuor diviso, quarum duas anticas breviusculas, duas posticas elongatas, trilobatas. Resembling PA. Jncii, but much smaller, and more finely 493 striated, the posterior lamine of the epidermis are more minutely serrated, and the external lamine, covering the dorsal edge, are very differently shaped, the posterior pair being trilobate. 24. Puotas catva (pl. ev. f. 51, 52, 53), Sowerby, Pro. Zool. Soc., 1834. Ph. testa subpyriformi, claus, anticé ventricosi, in partes tres oblique divis’ ; parte antica prope marginem ventralem leevigata, in medio et ad dorsum minut’ radiatim scabré; parte media late plan, epidermide crass induti; parte posticd subrotundatim an- gulata, attenuatd, epidermide laminata, fascia serrata marginata ; margine ventrali integumento elongato, integro; margine dorsali integumento subtestaceo super umbones et latera, tnarginibus lobatis, expanso, posticé altero elongato inter lobas integumenti postici paululim intruso. Differing from P%. acuminata in the shape of the laminz and termination of the posterior portion, which are rounded, and in the external dorsal covering, or shield, which is more shelly, and spread over a large portion of the sides of the shell as well as the umbones, and the posterior dorsal integument is intruded a short space between two of its lobes. Collected by Mr. Cuming in very hard stone at low water, in Panama Bay. 25. PHotas BRancuHiaTa (pl. evil. f. 82, 83), Gould, Pro. Bost. Soc. Nat. Hist., 1845, p. 290. Ph. testa clausd, subpyriformi, ventricosa, in partes tres oblique divisi; parte anticd prope marginem ventralem sublevigata, dorso usque ad medium minute striati; parte media plana, epidermide crassa indut&i; parte posticd ad termmum attenuata, epidermide in laminis levigatis rotundatis disposité ; margine ventrali integu- menti elongato, integro; margine dorsali lamina testaced super umbones, lateraliter et subanticé expansi, marginibus integris ; posticé integumento elongato claviformi, usque ad medium lamin umbonalis intruso. Differing from PA. calva in the shape of the umbonal plate, which is less spread, and more even and entire; and in that of the posterior dorsal integument, which is intruded half-way into the umbonal plate. 26. Puotas ovata (pl. evu. f. 71, 72), Gray, MS. British Museum. Ph. test& subpyriformi, ventricosi, clausi, in medio transverst 38 4.94: divisi ; antice in medio et ad marginem dorsalem Jongitudinaliter striata, radiatim costati, ad marginem ventralem levigata ; pos- tice levigatd, marginibus longitudine ineequalibus ; umbonibus lamina testaced expansi celata. The specimen in the British Museum is imperfect, and the locality is not stated. It is divided in the centre by a serrated grove, and the ventral margins of the valves are smooth as in the preceding species. The posterior portion is smooth and tapering, one valve being considerably longer than the other. 27. Puonas curta (pl. civ. f. 33, 34, pl. evi. f. 105), Sow., Pro. Zool. Soc., 1834. Ph. testé brevi, oval, clausi, in medio obliqué divisi ; parte antici margine ventrali levi, ventricoso, medio ad dorsum costata et minute striata; parte posticd levigata; lamina dorsali sub- cylindrica, termimibus subangulatis. Oval, divided in the centre, with enclosed tumid ventral margin. The posterior part is short and smooth, with a thin epidermis. The dorsal shield is rather large, oval, straight at the sides, angular at the ends. Figure 105 is from a specimen in the British Museum. The other specimens were obtained in soft stone at low water on the coast of West Colombia, by Mr. Cuming. 28. PHonas muutisrriata (pl. civ. f. 35, 36), Sowerby, Pro. Zool. Soc., 1849. Ph. testa oblong’, clausi, transversé oblique divisa ; parte antic’. margine ventral leevigato, medio ad dorsam minutissimé striata ; parte posticd levigati, laminis attenuata; lamina dorsali ovali, posticé circulari, anticé subacuminata. Resembling PA. curta (f. 33, 34, 105), but the striz on the umbonal part of the anterior are very much finer, and the poste- rior termination is elongated. The dorsal shield is more oval, rounded anteriorly, and acuminated posteriorly. Collected by J. E. Dring, Esq., R.N., in coral rocks at low water at Turtle’s Island, on the north coast of Australia. 29. Puonas srriata (pl. civ. f. 40, 41, 42, pl. ev. f. 43, 44), Linn. Syst. Nat. }111. Ph. nana, Pulteney. Ph. pusilla, Linn. Syst. Nat. 1111. Ph. ignorum, Spengler. Ph. conoides, Fleming. Ph. clavata, Lamarck, Ani. s. vert. 2nd edit. p. 46. Ph. testé clausd, divisi; anticé angulatim longitudinaliter 495 costati, costis serratis, margine ventral levigato, rotundato ; pos- ticé prope medium concentricé striata, extremitate plus mmusve, at- tenuati ; laminis tribus, und elongati ad margines ventrales, und inter margines dorsales, und magna, subquadrata, posticé emargi- natd, super umbones posita. An enclosed species, with the dorsal part of the anterior ribbed angularly by raised, serrated ndges. The posterior portion is con- centrically striated, and at the termination indefimtely extended. There is a thin, long plate between the dorsal margins, and another over the ventral margins. The umbonal shield is large, rather quadrate, and at the posterior edge emarginated. Found on the coasts of Great Britain, and in floating wood in various parts of the Atlantic. Mr. Cuming has collected varieties at the Philippine Islands. 30. PHotas cunerrormis (pl. civ. f. 38,39, pl. evi. f. 86,87), Say, Journ. Ac. Sci. Philad. vol. i. p. 322. Ph. testa oblonga, claus4, transversé oblique divisi ; anticé mar- gine ventrali levigato, rotundato, latere dorsali costis longitudina- libus arcuatis, serratis ; posticé concentricé striatié, plus minusve attenuata’; laminis tribus, und elongaté ad margines ventrales, una inter margines dorsales, und ad umbones anticé obtusé angu- lata, posticé acuminata. Resembling PA. striata (f. 40, 41, 42, 43, 44), but with the strie, or ribs, of the anterior part curved, not angular, and the dorsal shield smaller, and pointed at each end. N. America. 31. PHoxas semicostata (pl. cvin. f. 84, 85), (copied), Lea, Pro. Bost. Soc. Nat. Hist., Nov. 1814, pl. 24. f. 1. Ph. testa Ph. cumeiforme simillima, sed magis pyriformi ; laminis marginalibus nullis ? This may possibly may be identical with Ps. cuneiformis, or with Pd. striata, but it is more ventricose, and no marginal plates are mentioned in the description. It is a very small shell, inhabiting the coasts of South Carolina. 32. Puonas corricaria (pl. evi. f. 94, 95, 96), Gray, MS. Brit. Mus. Ph. testa clausa, divisd; anticé angulatim longitudinaliter costati, costis serratis, margine ventrali levigato ; posticé prope medium 382 496 concentricé striati, extremitate plus minusve attenuati; laminis tribus, quarum und elongaté ad margines ventrales, und inter margines dorsales, und super umbones parva, subquadrata. Resembling PA. striata, but having the dorsal shield very small, and of an oblong square, somewhat rounded anteriorly. ‘The specimens, having bored in floating mahogany, have taken a reddish colour. 33. PHoxas rivicoxa (pl. cvii. f. 90, 91), Sowerby, junr., Pro. Zool. Soc., 1849. Ph. testa clausi, cuneiformi, transversé canali divis4 ; parte an- tic obliqué dimidiata, latere dorsali striato, latere ventrali levi, subangulato ; parte posticd subelongata, levi, epidermide laminis angulatis marginibus serratis ornaté ; lamina dorsali subquadrata, in medio longitudinaliter divisa. A cuneiform, enclosed species, divided transversely by a canal ; the dorsal side of the anterior obliquely striated; the posterior is attenuated, and covered by a dark olive-green epidermis, which is thrown out at regular intervals in angular fringed lamine. This is the only Pdolas yet found inhabiting fresh water. The fringes of the epidermis, and the divided dorsal shield, render it perfectly distinct. For this species | am indebted to the courtesy of A. Adams, Esq., Surgeon of the ship Samarang, who collected it at a place called Gunny Taboor, twelve miles up the Pantai river, where the water was perfectly fresh, and where it burrowed in considerable numbers in the floating piles which had been long used as a landing pier. 34, PHotas oprecta (pl. cvin. f. 80, 81), Sowerby, junr., Pro. Zool. Soc., 1849. Ph. testa ovata, subpyriformi, claus, canali transverse dimi- diata ; parte antica latere dorsali minute striato, latere ventrali leevi, rotundo ; parte posticd levi, ad margines laminis duabus protecta, ad terminum laminis duplicatis cyathiformibus producti; ad um- bones lamina testaced, postice bilobata, anticé late versus marginem ventralem expansa. A rather ovate shell, rounded anteriorly, and attenuated poste- riorly. It is divided by a grove, and the anterior part is closed by an expansion of the margins; posteriorly, the dorsal and ventral edges are covered by a folded membrane, and at the end there is a narrow, flattish, cup-shaped expansion divided laterally. The um- bones are covered by a shelly case, which reaches in two lobes 4,9 7 towards the posterior end, and is spread over a large part of the anterior, towards the ventral edge, so as, when fully developed, to cover the entire front. Collected by J. E. Dring, Esq., R.N., in coral rock, low water, at Turtle’s Island, north coast of Australia. 35. Puoxas spaTHuLATaA (pl. evi. f. 69, 70), Sowerby, gunr., Pro. Zool. Soc., 1849. Ph. testé elongata, claus, oblique divisé; parte anticd radiatim costati, subangulaté; parte postici concentricé leviter striata, subtruncaté, ad margines integumento protecti, ad terminum in cyatho corneo, lateribus spathuliformibus, producté ; ad umbones laminis duabus equalibus, postice bilobatis, anticé elongatis. The front part is ribbed and imbricated ; the posterior is rather smooth, elongated, and squared at the end, with the edges covered by a folded integument. The cup is rather flat, and separated at the sides. The umbonal shield consists of two trilobate lamin, the anterior lamina elongated to reach the anterior termination. From New Zealand. Mr. Earle. 36. Pyoxas concameErata (pl. evi. f. 67, 68), Deshayes. Ph. testa ventricosa, claus&, obliqué divisi; parte antica inflata, radiatim costata, costis imbricatis, marginibus dorsalibus laté re- flexis ; parte postici striata, ad terminum subquadrataé ; in cyatho corneo, ad latera diviso, producti; ad umbones lamind subquad- rata, magna, posticé subacuminaté; tim laminis duabus latis cum marginis teste terminalibus confluentibus. The front part of the valves is ribbed, and very strongly imbri- cated, and the dorsal edges are very widely turned back over the umbones. The cup is separated at the edges. There are three thick, shelly dorsal plates: one broad and rather square, the two others opposed to each other, very broad and tumid, and anteriorly con- fluent with the expanded margin, which fills up the ventral gape. Found in sandstone, deep water, at Monte Rey, California, by M. Hartweg. 37. Puouas papyracza (pl. evi. f. 66), Turton, Dithyr. Brit. p. 2. pli. f. 1 to 4. Ph. lamellata, Turt., Dithyr. Brit. p. 4. pli. f. 5, 6. Pholadideea Loscombiana, Zwrt., Conch. Dict. p. 147. Ph. Goodallii, Dict. Sc. Nat. vol. xxxvii. p. 532. _Ph. striata, Griffiths et Cuvier. Ph. testa subcylindricd, clausd, canali serrato divisi; parte 498 antica costaté et imbricati, margine ventrali levi, inflato, margine dorsali confluente, usque ad umbones reflexo, tumido ; parte pos- fica levi, subtruncata, ad terminum appendice cyathiformi lateribus subquadratis. This common British species is rather cylindrical in form, enclosed at the anterior by a thin test, which, from the ventral, is continued over the dorsal margins im a kind of double ridge. Close to the umbones, this ridge is divided transversely, so as to form a pair of separate plates. At the posterior termination is a cup-shaped appendage, which is rather quadrate in form. Found in various parts of Great Britain. Puotas ciausa (pl. evi. f. 74, 75), Gray. P. expla- nata, Spengler ? Ph. testa clausi, subovali, ventricosd, omnino striis radiatis et costis moniliformibus concentricis ornati ; margine dorsali pos- ticé sufflato, margine dorsali anticé validé expanso et sufflato, ad umbones transverse inciso, super laminas transversas duplicatas ex- pansas decumbente ; ad terminum posticum subattenuata, epider- mide nigricante, lobis quatuor inflatis, ttm integumento cyathi- formi expanso, ad latera emarginato. This species is not divided by a central grove, but is reticulated by fine raised strive crossing concentric knobbed ribs. The dorsal margins are swelled, the anterior swelled out and turned back over the umbones, where they are transversely divided and placed upon a transverse platform, which is wide and acuminated, and also divided in the centre. The cup is expanded, emarginated at the sides, and surmounted by four rounded and swelled lobes. River Gambia. Capt. Shaw. 39. PHoLas TRIDENS (pl. evi. f. 60, 61). ‘Talena tridens, Gray, Brit. Mus. Cat. Ph. test4 clausd, subovali, canali serrato divisa ; parte antica costaté et lineaté, margine ventrali inflato, cum margine dorsali confluente ; margine dorsali tumido, diviso, ‘ad ambenee transversé inciso ; parte posticA concentricé lineaté, ad terminum tumis arcu- atis duabus, ad marginem posticum integumento cyathiformi ; cyatho intus callo tripartito. Resembling Ph. papyracea (f.66) im some degree, but more tapering posteriorly, and the cup is surmounted by an arcuated tumidity on each side, which within is marked by a tripartite callosity. Monte Christo. Cuming. 4.99 40. PHonas quapra (pl. evi. f. 62,63), Sowerby, Pro. Zool. Soc., 1834. Ph. test& clausd, subovali, canali serrato divisi; parte anticd costaté et lineaté, margine ventrali inflato, cum margine dorsali confluente, margine dorsali tumido, diviso, ad umbones transversé inciso; parte postici concentricé striaté, ad terminum tumis in- flatis quatuor, et tubd testaced plus minusve elongata. Resembling P2. tridens (f.60, 61), but with the anterior dorsal margins more inflated, and at the posterior termination having a shelly tube surmounted by four horny tubercles. Collected by Mr. Cuming on sand, in loose clay, at Monte Christo. 41. PHotas TuBIFER (pl. evi. f. 64, 65), Sowerby, Pro. Zool. Soc., 1834. Ph. testé claus’, subovali, canali serrato divisi; parte anticd costatA et lineatd, margine ventrali inflato, cum margine dorsali confluente, margine dorsali tumido, diviso, ad umbones trans- versé inciso; parte posticd concentricé striati; ad terminum spathulis duabus subquadratis, corneis, ad tubam testaceam plus minusve clongatam affixis. Shell enclosed, divided; the front part costated and imbricated, and the test fillmg up the ventral gape confluent with the dorsal margin, which is reflected, tumid, and, at the umbones, separated into two small valve-hke appendages. Next to the posterior end of the shell are a pair of horny flaps, which are fixed into a shelly tube. In PA. quadra (f. 62) the tube is surmounted by four lobes instead of these flaps. Collected by Mr. Cuming in decayed wood, ten fathoms deep, at the Bay of Caraccas, West Colombia. 42. PHoLtas MELANURA (pl. evi. f. 78, 79), Sowerby, Pro. Zool. Soc., 1834. Ph. testa, clausd, subovali, canali serrato divis’; parte anticd 1m- bricatim costati, margine ventrali levigato, inflato, dorso conflu- ente, margine dorsali validé reflexo et tumido, ad umbones laminis duabus subquadratis super laminas latas dispositis diviso; parte postici concentricé lyraté, epidermide nigricante, ad termimum tumis corneis, inflatis, sub-reniformibus, duabus ad tubam testa- ceam affixis. Much larger than P2. guadra, and more boldly sculptured. The 500 divided plates of the umbonal ridge are placed upon a broad platform between them and the umbones. The _postero-dorsal outline is inflated. The posterior part of the shell is covered by a blackish epidermis; at the termination, there are two horny ae each of them bilobed, surmounting a broad, black, shelly tube. Found in hard clay and loose stones at Monte Christo. Cuming. MONOGRAPH OF THE GENUS TRIOMPHALIA.* Fam. Pholadide. Char. Gen. Molluscum acephalum terebrans. Testa bivalvis, eetate juniori hians, state maturd clausa. Valve ineequales, utraque anticé lamina testaced inflat’é ad marginem ventralem affixi; interné cardine unidentato, sine processu; valva dextra posticé alteram valvam longitudine superans; valva sinistra pos- ticé abbreviata, antic lamina ventrali alteram valvam involvente, ad dorsum nucleo quasi-umbonali incipiente. A genus of boring Mollusca, with bivalve shells, allied to that group of Pholades which, when mature, have the ventral anterior hiatus of the valves closed by an expanded test. The valves are unequal, the right one bemg considerably produced at the posterior end, and the left much shorter at that end, but anteriorly extending its ventral covering so as to over-wrap that of the other. * Tpla, tria; dupadoy, umbo. Since writing the above, my attention has been directed to a genus of Pholadida, described under the name of Pholadopsis (Conrad), which may, by possibility, be identical with the one now proposed. The two most important characters, however, being omitted (namely, the third umbo, on which I found the name; and the absence of hinge processes, on which alone I justify the separation of the genus), and no reference being made to Quoy and Gaimard’s figure of Ph. globosa, the description is not deemed sufficiently complete for identification. 501 On the dorsal edge, at the umbones, this testaceous covering seems to take its rise from an extra-umbonal nucleus. Hinge unidentate, without processes. The over-wrapping of the ventral covering of the right valve by that of the left, the umbo-like nucleus of the latter, and the compensating inequality of the valves at the posterior end, would be considered by many concho- logists as forming sufficient grounds for separating this peculiarly constructed group from the genus Piolas. But were the separa- tion to rest upon these characters alone, it might be said that, in consistency, the generic division of other groups of Pholades, pro- posed by authors, some of which present very interesting peculi- arities, should also be adopted. But the groups named as genera, Dactylus, Pholadidea, Talona, and Jouanettia, all exhibit one character in common, namely, the curved processes jutting from beneath the hinge, which in Zriomphalia are wanting. The name is taken from the nucleus of the anterior lamina, which, over- lying the two umbones, forms, as it were, a third. 1. TriompHaLia GLososa (pl. evi. f. 54, 55). Pholas glo- bosa, Quoy, Voy. Astrolabe. T. test& subovali, posticé subattenuatd, anticé globosi; valvis transversé dimidiatis: parte postici concentricé lyraté, in medio costa imbricata una; parte anticd lyrata, radiatim costis acuté im- bricatis ornati; valva dextré producti, sublinguiformi, dentibus acutis recurvis serrat’i; nucleo lamine terminalis valve sinistre triangulari, striato, subcomplanato. Rather oval, thin, with the valves transversely divided, with one radiating series of angular points in the middle of the posterior half, and eight or nine on the anterior portion, crossed by raised lines beautifully curved in the opposite direction. The right valve terminates angularly, and is serrated at the edges by curved, sharp teeth. ; In soft stone at half-tide; Isle of Leyte, Philippines. Cuming. 2. TRIOMPHALIA PULCHERRIMA (pl. evi. f.58, 59), Sowerby, junr., Pro. Zool. Soc., 1549. T. test& subovali, ventricos’, postice globosa, corrugaté, anticé subattenuata; valvis transversé dimidiatis: parte posticd costis distantibus concentricé lyraté; parte antic’ lineis lyrati, costis im- bricatis radiaté; valvi dextrd producta, linguiformi, margine den- tibus acutiscrispatis serrato; nucleo lamine terminalis valve sinistree subtriangulari, rotundo, leis elevatis lyrato. 37 502 This species is larger than 7. globosa (f. 54, 55), the ventral covering being much more globose and rough ; the supplementary nucleus is not so flat or so smooth; the points at the termination of the right valve are more strongly curved; the concentric ribs on the posterior part of the valves are more strongly defined, and they are not crossed by the oblique row of raised points which characterize those of the other species. Nothing can exceed the beauty of sculpture in both species. West Colombia; soft stone, low water. Cuming. 3. TRiomPHALia Cuminett (pl. evi. f. 56, 57), Sowerby, junr., Pro. Zool. Soc., 1849. T. testa rotunda, crassi; valvis posticé canali divisis, concentricé lineis elevatis lyratis, antice costis minutis, serratis, radiatis ; parte posticd concentricé lammati; valv&é dextra posticé in lingula tri- angulari margine triplicato producti; valva smistré posticé brevis- simi, margine terminali circulari. This shell would be completely spherical, but for the lnguiform triplicate extension of the right valve; the left valve terminating in a circular margin, where the round part of the right meets it. The posterior part of the valves is very narrow, and strongly laminated ; the anterior part is striated, and, near the termination, transversely ribbed. The covering test of the hiatus is beautifully rounded. Coral rock, at low water; Isle of Zebu, Philippines. Cuming. MONOGRAPH OF THE GENUS XYLOPHAGA. Char. Gen. Molluscum acephalum terebrans. Testa bivalvis, anticé angulatim hians, globosa, cardine edentulo, umbonibus valvis duabus parvis obtectis. This genus, like Zriomphalia, wants the subumbonal processes which are characteristic of Pholas and Teredo. 5038 1. XyntopHaca eLogosa (pl. cvin. f. 101, 102), Sowerby, Pro. Zool. Soc., 1834. X. test’ globos’, in medio transverse costis duabus et ared plana divisi ; parte postici subproducté, margine dorsali subde- clivato ; parte antici angulatim striaté, margine ventrali angulatim emarginato, angulo subobtuso; umbonibus rotundatis, laminis duabus cordiformibus super marginem dorsalem reflexum posticum ositis. : If there be any real difference between this and the last species, it may consist in the posterior part of the valves in X. dorsalis being shorter and more elevated at the dorsal margin. The opening in the ventral margin seems also to be more acute in X. dorsalis. Found in wood at a depth of sixty fathoms at Valparaiso. Cuming. 2. XyLopHaGa DorsALIs (pl. evi. f. 103, 104), Zurt., Brit. Biv. u. f. 4, 5. X. testi globosi, in medio transversé costis duabus et area plana divisé ; parte postica brevi, margine dorsali subelevato ; parte antic epidermide induti, angulatim striata’, margme ventrali angulatim emarginato, angulo subacuto; umbonibus rotundatis, Jaminis duabus cordiformibus super marginem dorsalem reflexum positis. Rounded, divided in the centre of each valve by a smooth area between two ridges ; the posterior part of the valves smooth, short, with the dorsal margin rather raised; the anterior part of the valves covered with a brownish epidermis, and angularly striated, with a large angular notch in the ventral margin. Two small heart-shaped dorsal plates are placed over the umbones upon the reflected anterior dorsal margin. Great Britain. PHOLAS, TRIOMPHALIA, AND XYLOPHAGA. LIST OF FIGURES IN PLATES CII. 10 CVIII. (The Figure after each name is the number of the Species.) Pruate CII. Ki g. Fig. 56, 57. Tr. Cumingii, 3. 1, 2. Ph. Chiloensis, Sp. 2. 58, 59. — pulcherrima, 2. 3, 4. — Orientalis, 4. 5, 6, 7. — Californica, 20. Prats CVI. 8, 9. — costata, 5. 60, 61. Ph. tridens, 39. 10, 11. — Dactylus, lp 62, (i —— quadra, 40. Prats OIII. 64, 65. — tubifer, 41. 12, 13, 14. — similis, 8. ee ap eet: 67, 68. — concamerata, 36. 15, 16. — latissima, 16. 69, 70. — spathulata, 36. 17, 18. — Manille, 7. 19, 20. — laqueata, 3. Prats CVII. 21, 22, 23. — candida, 9. 71, 12. — ovata, 26. Puate CIV. 73. — Australasiz, 11. 24, 25, 26. — crucigera, 13. 74, 75. — clausa, 38. 27, 28. — constricta, 15. 76, 77. — Darwinii, 17. 29, 30, — truncata, 12. 78, 79. — melanura, 42. 31, 32. — parva, 6. Puate CVIII. 33, 34. — curta, 27. 35, 36. — multistriata, 28. 80, 81. — obtecta, 34. 37. — crispata, 14. 82, 83. — branchiata, 25. 38, 39. — cuneiformis, 30. 84, 85. — semicostata, 31, 40, 41, 42. — striata, 29. 86, 87. — cuneiformis, 30. 88, 89. — quadrizonalis, 23. Piate OV. 90, 91. — rivicola, 33. 43, 44. — striata, 29. 92, 98. — fragilis, 10. 45,46. — Incii, 21. 94, 95, 96. — corticaria, 32. 47. — Dactylus, 1. 97, 98. — Teredinzformis, 18. 48, 49, 50. — acuminata, 22. 99, 100. — aperta, 19. 51, 52, ie}, = calva, IA, 101, 102. Xy. globosa, 1. 54, 55. Tr. globosa, 1. 103, 104. — dorsalis, 2. N.B. The above, with few exceptions, are figured from specimens in Mr. Cuming’s Collection. or ALPHABETICAL INDEX. acuminata, Sp. 22, f. 48, 49, 50. aperta, 19, f. 99, 100. Australasia, 11, f. 73. branchiata, 25, f. 82, 83. Californica, 20, f. 5, 6, 7. calva, 24, f. 51, 52, 53. Campechensis, v. Chiloensis. candida, 9, f. 21, 22, 23. Chiloensis, 2, f. 1, 2. clausa, 38, f. 74, 75. clavata, v. striata. concamerata, 36, f. 67, 68. conoides, v. striata. constricta, 15, f. 27, 28. corticaria, 32, f. 94, 95, 96. costata, 5, f. 8, 9. crispata, 14, f. 37. crucigera, 13, f. 24, 25, 26. Cumingii (Triomphalia, 3), f. 56, 57. cuneiformis, 30, f. 38, 39, 86, 87. curta, 27, f. 33, 34, 105. Dactylus, 1, f. 10,11, 47. Darwinii, 17, f. 76, 77. dorsalis (Xylophaga, 2), f. 103, 104. fragilis, 10, f. 92, 93. globosa (Triomphalia, 1), f. 54, 55. globosa (Xylophaga, 1), f. 101, 102. Goodallii, v. papyracea. Incii, 21, f. 45, 46. lamellata, v. papyracea. laqueata, 3, f.19, 20. latissima, 16, f. 15, 16. Lignorum, v. striata. Loscombiana, v. papyracea. Manille, 7, f. 17, 18. melanura, 42, f. 78, 79. multistriata, 28, f. 35, 36. nana, Vv. striata. obtecta, 34, f. 80, 81. Orientalis, 4, f. 3, 4. ovata, 26, f. 71, 72. papyracea, 37, f. 66. parva, 6, f. 31, 32. pulcherrima (‘Triomphalia, 2), f. 58, 59. pusilla, v. striata. quadra, 40, f. 62, 63. quadrizonalis, 23, f. 88, 89. rivicola, 33, f. 90, 91. semicostata, 31, f. 84, 85. similis, 8, f. 12, 13, 14. spathulata, 35, f. 69, 70. striata, 29, f. 40,41, 42, 43, 44. striata, V. papyracea. Teredinzformis, 18, f.97, 98. tridens, 39, f. 60, 61, truncata, 12, f. 29, 30. tubifer, 41, f. 64, 65. MONOGRAPH OF THE GENUS NERITINA. Char. Gen. Molluscum trachelipodum plerumque fluviatile. Testa plerumque tenuis, subglobosa, epidermide induta; dorso rotundato ; ventro subplanulato; apertura semicirculari; labio in- terno ad marginem plerumque dentato, labio externo intus levi- gato. Operculum semicirculare testaceum, unidentatum, nucleo subterminali. A genus of spiral univalves, almost always found in fresh water, and covered with an epidermis; of a globose form, with a half- circular aperture, the inner edge of which is nearly straight. The inner lip is broad, and generally flat; the outer lip is always smooth. The operculum is semicircular, testaceous, with the nucleus near the lower end, and a tooth at the side, which fixes under the inner lip. Although the shells of this genus are nearly all fresh-water, comparatively thin, covered with a thickish epi- dermis, and smooth within the outer lip, while the Nerite are marine, solid, with a very thin epidermis, and generally crenulated within the outer lip, the separation of the two genera may, per- haps, be regarded rather as one of convenience than as resting on any solid grounds. It will be found that many of the following species are described rather comparatively than positively: this is done from a conviction of the former mode being the best for facilitating their recognition. 1. Nerrrina ovaxis (pl. cxi. f. 121, 122), Sowerdy, Pro. Zool. Soc., 1849. N. testa transversé ovata, exts nigra, inttis cinered ; spira nulla, apice terminali, aperturd ovali magna; labio externo confluente, labio interno septiforme, complanato, aurantio, margine obscuris- simé crenulato. Operculo nigro, radiato. More regularly oval than the other patelliform species, with the apex quite termmal. Outside black, rather rough; inside blueish, excepting the columella, which is orange. It is flat, septiform, and very obscurely crenulated at the edge. Mr. Cuming’s collection. 508 2. Neritina pinatata (pl. cxi. f. 123, 124, 125), Brod., Zool. Pro., 1832; Conch. Ill. f. 11. “N. testa ovato-truncaté, dorso convexo, albido-fusca, lineis nigris angulatis reticulata; spird obliqué incurvi; labro tenui superné sub-biauriculato ; labio subarcuato, denticulato.” Of a semiglobose form, flat at the side of the aperture, and convex outside; with the inner lip septiform, the outer lip widely auriculated at the extremities, and the spire nearly terminal. The outer surface is pale, reticulated with dark angulated lines. Tahiti; adhering to stones in rivers. Cuming. 3. Neritina cariosa (pl. exit. f. 126), Gray, Wood, Supp. t. 8. Nerita, f.9. N. Nuttali, Recluz. N. testi N. dilatate simili, sed extis nigra, apertura alba, labio interno tumido, auriculis magis expansis. Similar in form to V. dilatata (Sp. 2), but with the outer surface perfectly black, the aperture white, with the inner lip swelled, and the auricles, especially the upper one, more spread; oper- culum black. In the Conch. Ilust., at f.5, this species was, by mistake, named NV. caffra; but it was afterwards rectified in the catalogue of species. Sandwich Islands; on stones in small streams. 4, Nerrrina Sanpwicuensis (pl. exi. f. 127, 128), Deshayes, Lamarck, Anim. s. vert. New Kdit., vol. vii., p.579. N. Mauritii, Recluz, MS. N. testi. NV. dilatate simili, sed magis depressi, extis nigra, intiis cere’ ; margine sinistro labii imterni oblique truncato. Resembling WV. didatata (Sp. 2), but flatter, with the margin of the inner lip oblique, and the upper angle rather sharp. Inside blueish ash, outside black. The mistake committed in the Conch. Il. (afterwards corrected), in naming fig. 5 NV. caffra, instead of WV. cariosa, led M. Deshayes to give the above name to our figure of the latter species. We imagine, however, from the description, that M. Deshayes had before him specimens of the shell to which we now apply it. Sandwich Islands, and the Mauritius. 5. Nerina auricunata (pl. cxii. f. 129, 130), Zam. Anim. s. vert. Ii. M. p. 455. f. 6. N. testa ovali, transverse substriaté, dorso elevato, rotundato ; 509 apertura complanata ; spird subobtecta, subterminal ; labio externo margine acuto, ad latera in auriculis angulatis expanso ; labio in- terno septiformi, lavigato. The back more rounded and elevated than in most of the patel- liform species, with the apex nearly terminal, and the margin of the aperture spread at the juncture of the outer and inner lips into angular auricles. The species here figured agrees much better with the figure in the ‘Encyclopédie Méthodique,’ quoted by Lamarck, than the one figured in the Conch. [llust., which M. Deshayes has named WV. Lamarchit. New Holland. 6. Neririna vespertina (pl. ex. f. 131, 132), Nuttadd. N. testa WV. awriculate simili, sed dorso multiim magis depresso, auriculis laté expansis. Like NV. awriculata (Sp. 5), but much more depressed, and having the auricles very broadly expanded. “ Sandwich Islands; on stones in small streams.’ 7. Nerrriva Tantrensts (pl. exi. f. 133, 184), Lesson. N. testé N. auriculate simili, sed auriculis rotundatis. Differmg from WV. auriculata (Sp. 5) in having the auricles rounded, so as to give the entire aperture a more oval form. Tahiti; on stones in small streams. Cuming. 8. NERITINA BICANALICULATA (pl. cxui. f. 135, 136, 137), Recluz, MS. Mus. Cum. N. testa N. auriculate simili, sed magis transversé elongata, magis patelliformi, columelli septiformi magis elongati; apice terminali; auriculis canaliformibus. More patelliform and depressed than NV. awriculata (Sp. 5), with the apex quite terminal. The auricles at the juncture of the inner and outer lips are narrow and hollow. “sland of Luzon; on stones in small ponds.” Cuming. 9. NERITINA CREPIDULARIA (pl. exiil. f. 189-144), Lamarck. N. Touranensis, Souwleyet. N. violacea, Gmel.? N. melanostoma, Troschel, Phil. Abbild. und Besch. Conch., t. i. f. 18. N. testa transversé ovali, epidermide induta, plerumque pallidé fulva, fasciis et lineis fuscis vel violaceis reticulata ; spira brevissima, anfractu singulo subobtecto; apertura magna, carneola, vel violacea; 3U 510 margine integro, ovali; labio externo crasso, expanso; labio in- terno crasso, septiformi, margine serrato. Transversely oval, with the lips of the aperture confluent on one plane, and the columella septiform. The lips are thickened and expanded, and in some instances include the whole shell in their oval diameter. The general resemblance of this Neritina to a Crepidula is remarkable. Ceylon; Bengal. Var. NV. Zouranensis is from Tourano. 10. Nerirrmva suBauricutata (pl. cxii. f. 138), Recluz, MS. Mus. Cum. N. testé WV. crepidularia simili, sed labii interni margine sinistro in auriculam obtusam producto. The inner lip is produced into an auricular angle at its upper junction with the outer hp. ‘The shell, which has an ashy pur- ple aperture, in other respects resembles WV. erepidularia (Sp. 9). On the trunks of the palms growing in brackish water on the Isle of Negroes. Cuming. ll. Nerrrina pepressa (pl. ex. f. 147, 148), Benson. N. testa WV. crepidularia simillimi, sed columella minus elevata, labio externo superné subdepresso. The specimens are generaily of a more lengthened oval than those of WV. erepidularia (Sp. 9), and the outline of the outer lip is more depressed at the upper part. Calcutta. 12. Nerina Siquiorensis (pl. cx. f. 145, 146), Recluz, Pro. Zool. Soc., 1843, p. 198. N. test WV. crepidularia simili, sed transversé magis elon- gata, spird obtecti, labio externo superné depresso. The left margin of the inner hip is not raised, as it is generally in advanced specimens of JV. crepidularia (Sp. 9); the shell is longer, and the body-whorl behind the columella more contracted than in that species, to which, however, it bears a strong resem- blance. “Tsland of Siquijor, in a small stream.” Cuming. 13. Neririna puLLiesra (pl. cxi. f. 65, 66), Linn. Syst. Nat. ; Zam. Chemn. Conch. t. ix. pl. 124. f. 1078, 9. ‘ N. testa crass, transversé ovata, exttis epidermide crass nigra induta; spird nulla; apice subdepress’; apertura magna; labio 511 externo superné extenso, ad apicem in costam elevatam producto, interné aurantio; labio interno cinereo, callo arcuato, in medio complanato, ad marginem leviter dentato, vix arcuato. Transversely oval, with large aperture, and no spire, the outer lip elevated into a ridge above the apex. The inner lip is broad and flat, with an elevated callus on the body-whorl ; its mer edge is scarcely curved, and very slightly dentated. The external sur- face is covered with a dark olive epidermis ; the columella is ash- coloured, and the inside of the outer lip orange. Molluccas; Zam. Cagayan, Misamis, Island of Mindinao, Philippines, on stones in a deep river ; Cuming. 14, Neririna Powitsstana (pl. cxiu. f. 149), Recluz, MS. Mus. Cum. N. testa transversé ovata, levigata, fasciis alternatim interruptis picté; spird celaté; apice depressi; apertura magna, albi; labio externo superné extenso, ad apicem in costam elevatam producto ; labio interno complanato, margine levi. Operculo rubro-nigricante. A very pretty little shell, resembling WV. pud/igera in form, but narrower, with the outer surface marked by alternately interrupted bands of red and black ; the mouth white, and the mner lip free from callus, and not dentated. New Ireland; in a mountain stream, on stones. Hinds. 15. Nerina Knorri (pl. cxi. f. 78, pl. exiii. f. 150), Recluz, Rev. Zool., 1841, p. 274. N. testa WV. pulligere simillima, sed transversé plus elongata, labio externo ad apicem decumbente. Rather longer in the transversely oblique direction than J. pulligera (Sp. 13); and the upper part of the outer lip not raised into a ridge as in that species. Island of Negroes; in a mountain stream, on stones. Cuming. 16. Neritina Perri (pl. cxi. f.77), Recluz, Rev. Zool., 1841, p. 873. N. testa WV. pulligere simili, sed apertura fusci, margine superné et inferné rotundato. Similar to NV. pulligera (Sp. 13), but the edge of the aperture rounded and confluent; the mouth is deep, and of a brown colour. Island of Mindinao, Philippines; on stones in a deep river. Cuming. 3U 2 512 17. Nerina Becxtr (pl. cix. f. 13), Reeluz, Rev. Zool., 1841, p. 275. N. test NV. pulligere simili, sed nigra; labio externo ad apicem decumbente, labio interno subconvexo. Resembling WV. pulligera and N. Knorrii, but differing from the former in the absence of the raised ridge on the apex, and from both in the columella being rather convex. The outside is black, and the margin of the outer lip is banded with deep orange. 18. Nerina canauis (pl. ext. f. 75, 76), Sowerby, senr., Tank. Cat. no. 1094. Conch. Hl. f. 22. “N. testa ovati; spird brevissima, obtecté; labio externo in canalem ad sinistram inclinatam producto ; labio columellari auran- tiaco, obsoleté subdenticulato ; epidermide nigerrima.” Of the same form as NV. pudligera, but the left side of the inner lip not at all callous. The epidermis is very thick and black ; there is a curve in the upper part of the outer lip, which is raised into a ridge at the apex; there is a grove between the outer lip and the upper part of the columella. Tahiti; on stones in a rivulet. Cuming. 19. Neririna Brueureri (pl. exiv. f.159), Recluz, MS. Mus. Cum. N. testa WV. canal simillimad, sed transversé magis elongata ; labio externo superné undato, ad apicem decumbente. Longer in the transversely oblique direction than NV. canadis ; the upper margin of the outer lip has a sinus or undulation, as in that species, but is not raised in a ridge on the apex. New Ireland; on small stones in a rivulet. /inds. 20. Neririna asperuata (pl. cxiv. f. 160, 161), Recluz. N. testa transversé ovali, scabros4, epidermide crassa, fusca, induti; spiri complanata, sublaterali, anfractu singulo ad suturam carinato; apertura magnd, pallidé aurantii; labio externo intus incrassato ; labio interno septiforme, complanato, margine edentulo. Transversely oval, finely scabrous, covered with a thick brown epidermis ; with the spire flattened and lateral, consisting of one whorl, which is keeled at the suture. The aperture is large, of a pale orange colour, with the outer lip thickened inside, and the iner lip septiform, with a smooth edge. “On small stones in a rivulet, Island of Luzon.” Cuming. a » 513 21. Nerirma acuteata (pl. cx. f. 32, 33, 34), Gmelin, 3686. Chemn. t. x. pl. 169. f.1642. N. sulcata, Wysé. N. testi transversé ovali, extts epidermide olivaced induta ; costis transversis moniliformibus, nonnunquam spinosis, ornata ; spird laterali, plana, obtecté ; apertura magni, margini fulva, intis ceruled ; labio externo laqueato, superné oblique extenso ; labio interno subplanulato, purpureo, margine irregulariter dentato. Of a hemispherical shape, the external surface covered by an olive-green epidermis, and having beaded ribs, upon which more or less rarely there are raised, sharp spines. The apex is small, lateral, and nearly hidden. The aperture is large ; the colu- mella septiform, purplish, and irregularly toothed. Island of Sumatra. 22. Neritmna squamaricra (pl. cxi. f. 79), Recluz, MS., Mus. Cum. N. testa crassi, obliqué, transversé ovati, extis lineis griseis squamiformibus per fascias tres picté, epidermide tenui olivaced induté; apertura ovali, albij; labio externo superné sinuato, ad apicem undatim extenso, spiram obtegente ; columell’ complanata, dentaté. Operculo griseo radiato, ad marginem aurantio. More oblique and lengthened than NV. Petitiiz, &c. The spire is hidden by the outer lip, which proceeds from it in a curved line, and is sinuated at the upper part. The inner lip is flat, toothed at the margin. The outside is marked by squamiform lines, shaded off at the back, and strengthened in three bands. The operculum is beautifully radiated with grey bands. Tsland of Luzon; on stones in a rapid river. Cuming. 23. NERITINA SANGUINEA (pl. cxiv. f. 162), Sowerby, junr., Pro. Zool. Soc., 1849. N. testi crassi, transversé ovaté, extts lineis griseis squami- formibus, per fascias tres picti, epidermide tenui olivaced induta ; apertura ovali, sanguinea; labio externo superné substnuato, ad apicem extenso, spiram obtegente ; columell4 complanata, margine levi. Resembling NV. squamapicta, but with the upper part of the outer lip less sinuated, and the edge of the columella smooth. The outer hp and columella are of a reddish-brown colour. New Ireland ; on stones in mountain streams. Hinds. 514 24. Nerrrina Morto (pl. exiv. f. 163), Sowerby, Pro. Zool. Soc., 1832, p. 201. “N. testa subovali, transversim striaté, atrd; apertura palles- cente ; columellé superné emarginati, in medio denticulaté. Long. 0° 7’; lat. 0° 75’ poll. Hab.: ad Insulas Polynesias.” Transversely oval and striated, black outside, pale fawn in the aperture. The spire, consisting of two or three whorls, is flat. The operculum is granulated. The teeth on the columella are very obtuse. Altogether, the shell has much more the appearance of a Nerita than that of a Neritina. On coral reefs at Ducie’s and Haster Islands, South Seas. Cuming. 25. NeERitTiIna Lasiosa (pl. cxi. f.80), Sowerby, Conch. Ill. f, 48, N. testi crassd, transversé subovali, extis epidermide viridi, lineis et maculis nigris picté, indutéi; spud depressi; apertura fusci, magni, laté, margine confluente; columelli recedente, ob- liqué complanaté, margine dextro levigato. Operculo carneolo, margine corneo. Of the same principle in make, but not of an oval form, as in N. Petitii. The spire is very small, the aperture large, and its margin continuous on the same plane. The external surface is crossed by irregular fine striz in both directions. Island of Luzon, Philippines; on stones in a rapid river. Cuming. 26. NERITINA FLUVIATILIS (pl. cxv. f. 178-186), Linn, Syst. Nat. p. 1253, var. f. 80. N. intexta, Vid/a. f.189. N. zebrina, Recluz, Rev. Zool., 1841, p. 341. f. 178. N. Polaponensis, Recluz, MS., f. 184. N.numidica, Recluz, Rev. Zool., 1841, p- 346. £179. N. Hildreichi, Schwerzend., f.182. N. mittre- ana, Recluz, Rev. Zool., 1842, p. 181. f. 183. N. thermalis, Boubée. N. sardoa; N. trifasciata, Menke. N. testa transversé elongata, levigata, varié pict; spirad parva, vix elevaté; apertura magna, semilunari; labio interno levi, sub- concavo. Generally much lengthened in the transversely oblique directiqn, with the body-whorl, and consequently the aperture, very large in proportion to the spire, which is small. The columella is septi- form, slightly concave and smooth at the edge. It was not until 515 after the most anxious examination of numerous specimens that I concluded to unite the various synonyma above enumerated, to the description of this species. The British varieties are well known; of the foreign varieties, var. Het/dreichii is found in the Lago di Garda, Italy ; var. cebrina, at Montpellier ; var. Polapo- nensis, ab Morea ; var. aumidica, in the “ Vallée de Tiri & Oray;” and several varieties are found in Sicily ; var. mittreana is found in France ; var. ¢thermadis in hot springs in the Pyrenees ; var. sardoa is from Sardinia; and var. ¢r7fasciata in the ditches at Milan. 27. Nerirtna TRANSVERSALIS (pl. exiv. f. 151, 152), Ziegler. Rosmasler, Icon. pl. 7. f. 121. N. testi WV. fluviatili simili, sed magis ovali; labio interno sub- calloso ; colore cceruleo, trifasciato. Of a more simply oval form, with generally a smaller spire, and the left edge of the inner lip slightly callous. The outer lip does not exhibit the same tendency to spread at the lower part. The colour is ashy, with three very obscure dark transverse bands. Operculum of a reddish colour. 28. Neritrna sucoinea (pl. cxiv. f. 153, 154), Recluz, Rev. Zool., 1841, p. 343. LN. testa WV. fluviatiii simili, sed spira complanata ; colore suc- cineo. A minute, amber-coloured shell, of the general form of J. fluviatilis, but with the spire flatter. Guadaloupe. 29. NERITINA MERIDIONALIS (pl. cxv. f. 187-190), Philippi, Enum. Moll. Sicil. p. 159, no. 3. pl. ix. f. 13 var. N. inqui- nata, Morelet, var. f. 189, N. lutescens, var. N. Philippi, Recluz, var. N. Beetica, Lam. Anim. s. Vert. vi. p. 188. N. Moreleti, Recluz. N. elongatula, Morelet. N. testa transversé subelongata, levi, varié pictd vel nigra; spira exsertiuscula; apertura semilunari; labio interno levi, com- planata ; labio externo superné subdeclivo. Although some specimens of even the British variety of NV. fluviatilis approach this species in form, yet the prevailing form of the two are different, this being less elongated, and having the upper part of the outer lip much more sloping. On examiming a large number of specimens I fully concur with M. Philippi in uniting several of the above synonyma with this species; and I 516 also think that the others must be included, as the variations, even among specimens of the same varieties and localities, are almost infinite. The principal varieties, and var. WV. Betica (Lamarck), are Sicilian; var. WV. iagquinata is found at Hstremadura; var. JV. lutescens, at Cephalonia; and var. N. Moredeti, in Portugal. 30. Nerirviva Danustensis (p. exiv. f. 155, 156), Sadler, Sowerby’s Conch. Ilust., f. 47; var. f. 156. N. serratilineata, Ziegler. N. testa WV. fluviatih simi, sed anfractu ultimo subquadrato, hneis angulatis longitudinaliter picta. The specimens vary, but there is a greater tendency to angula- rity of outline, and the outer lip is not so much extended as in N. fluviatilis, with some forms of which, however, it is in close affinity. In the variety (f. 156) named J. serratilineata, Ziegler, from the Lago di Como, Italy, the linear markings are beauti- fully angulated, and in the original variety, from the Danube, they are more straightened. 31. Nerrriva carinata (pl. exiv. f. 157, 158), Koch. N. testi NV. Danubiensi simili, sed ultimo anfractu superné carinato. The angularity of outline observed in the typical variety of N. Danubiensis is increased in this species so as to form a keel on the upper part of the whorl. The markings are in a longitu- dinal direction, more or less angulated. ‘The aperture tends to yellow. 32. Neririna reticutata (pl. exi. f. 74), Sow. Pro. Zool. Soc., 1882 ; Conch. IIL. f. 2. N. testa crassa, transversé ovali, striaté, lineis nigris reticulata ; spira brevi; apertura alba, magni; labio externo crasso; labio interno angusto, margine obtuse dentato, in medio arcuato. Oper- culo nigro. A much more solid shell than WV. fluviatilis, &c., with the mouth not so large in proportion to the body. The outside is transversely striated, and marked with reticulated black lines. The inner lip is narrow, arcuated, with blunt teeth. The opercu- lum black. Lord Hood’s Island, South Seas; on sand, brackish water. Cuming. 517 33. Nerrrma oprusa (pl. cxi. f. 72, 73), Benson. N. test& transverse ovali, leviter striata, epidermide subviridi indutd; spird depress’, anfractibus duobus ; apertura magn, sub- cinerea ; labio externo interne crassiusculo; labio interno com- planato, recedente, margine sinistro obliqué acuto, margine dextro m medio subarcuato, subcrenulato. Operculo cinereo. Transversely oval, slightly striated, covered with a dingy olive epidermis. The spire is rather flat, consisting of two whorls; the body-whorl and aperture is very large. The left margin of the columellar lip presents a sharp keel half-way up; the nght margin slightly arcuated and crenulated in the centre. The muner edge of the outer lip is thickened inside. Banks of the Ganges, Calcutta. 34. Neritina Panayana (pl. exv. f. 191). N. testa WV. obtuse simili, sed lineis griseis minuté angulatis picta; labio externo magis expanso; labio interno concavo, mar- gine leevigato. Differing from JN. obtusa (Sp. 33) in the outer lip being more spread at the upper part, and in the columella being smooth at the edge and rather hollow. The outer surface is covered with zigzag lines. River Dingle, Island of Panay; on small stones. Cuming. 35. Nerirma busta (pl. cxi. f. 81-88), Chemn. Conch. 5. pl. 193. £2019, 2020. N. reticulata, Quoy e¢ Gaimard. N. zebra, Chemn. t. 1x. p. 69. pl. 124. £1380. N.zebroides, Lesson. N. Philippmarum, Sowerby’s Conch. Ill. N. fasciata, Lamarck, Sowerby, Conch. Ill. f.35. N. bella, Busch, Phil. Abbild. t. 1. f. 8. N. testé transversé subovali, subtenw, fuscd vel pallidé fulva, fasciis et maculis nigris varié picti; spird rotundata, anfractibus tribus ; apertura interné ad extremitates subcarinatd ; labio externo imtts mecrassato ; labio interno complanato, levi, plerumque fusco. Operculo griseo. Rather oval transversely, rather thin, brown, with various black markings; spire rounded, with three whorls; aperture with a small raised edge within, at each extremity; and the inside of the outer lip with a slight thickening. The inner lip is flat and smooth. River Pisag, Bay of Manilla; adhering to the piles of wharfs. Cuming. 3x 518 36. Neritina cornea (pl. cxi. f.67, 70, 71), Linn., Syst. Nat. xii. p. 1258. N. amphibia, Lesson, Voy. Coq. t. xi. 2me part. N. ampullaria, Lesson. N. subsuleata, Sowerby, Conch. Tl. £.50. N. Morio, Deshayes, in Lamarck. N. fasciata, Lam., Anim. s. vert. vill. N. testa WV. dubia simillima, sed transversé subsulcata. Differing from NV. dubia in being sulcated. Mr. Cuming took specimens from leaves of palms, twenty feet lugh, in woods, at Puerto Galero, Island of Mindoro. 37. Neritina serrutata (pl. exiv. f. 164), Reeluz, in Cuming’s Collection. N. test’ WN. dubia simillima, sed labio columellari dentato ; colore nigro, lineis et punctis albis. Resembling WV. dudia, but with the edge of the columella den- tated. The colour is black, with white lines and spots. Cape Palmas, Sumatra; on stones in a river. Cuming. 38. Nurivina aprata (pl. exiv. f. 165), Recduz, MS. in Mus. Cuming. N. testa WV. dubia simillima, sed spira magis productaé ; columella obscure crenulata. Like WV. dubia (Sp. 35), but with the spire more produced, and the columella very obscurely crenulated. Island of Negroes; on stones in a mountain stream. Cuming. 39. Neririna PrPERINA (pl. exiv. f. 166,167), Chemu., t. xi. p. 173. pl. 197. f. 1905-6. N. testi transversé ovali, glabri, epidermide tenui, subviridi in- duté, maculis trigonis mgris picti; aperturd magna, fulva; labio externo intts incrassato, superné obliqué extenso ; labio interno in medio subtumido, margine dentato. Transversely oval, shining, with a thin, greenish epidermis, and large three-cornered black spots on the outside; aperture large, yellow; outer lp extended at the upper part with an oblique undulation ; inner lip slightly swelled m the centre, dentated at the edge. The elegant specimen of which we give a front view is in Mr. Hanley’s collection. Locality unknown. 519 40. Neritiva GRANosa (pl. cxiv. f. 170, 171), Sowerby, Tank. Cat. ; Conch. Ill. f. 6. N. papillosa, Jay, Cat. p. 117. t.4. f. 11. “N. test4 rotundata, compressiusculé, subalata, alba, epider- mide nigra induta, exttis granosi, granis per series ordinatis ; labii extern margine crenulato; subtts planulata ; labio columellari lato, aurantiaco, margine interno sinuato, edentulo.” A large round shell, flat in front, and rounded at the back, with the outer surface tuberculated, and covered with a thick black epidermis ; the spire is lateral, and consists of scarcely more than one turn; the aperture large, greyish, crenulated at the margin, divided in the centre by a yellowish septiform columella, which is slightly rounded on the left side, and smooth and arcuated at the edge. Operculum reddish brown. “ From a fresh-water stream in one of the South Sea Islands,” Budgin. Also in mountain streams, Sandwich Islands. 41. Nerrrina tavissima (pl. cxiv. f.172, 173), Broderip, Zool. Proc. ; Conch. Ill. f. 3, 16. “N. testa rotundata, ventricosi, striis longitudinalibus, minutis, creberrimis, fuscd luteo maculata, maculis numerosissimis ; labro dilatato latissimo, spiram longé pretereunte; labio crenulato, subluteo.” Remarkable for the manner in which the outer lip is spread out into a broad wing at each end. The outside is green or brownish, reticulated, and in some specimens banded with black ; the colu- mella is buff, half-moon-shaped, flattish, and obtusely crenulated at the edge. Operculum blackish, with a horny reddish margin. Adhering to rocks in the river at Realeijos. 42. Nuritina Owenrana (pl. exiv. f. 168), Gray, Wood’s Suppl. f. 8. N. testé NM. latissime simillimé, sed labio interno tumido, margine labii externi inferni recurvo. Resembling JN. Jatissima, but with the columella swelled out, and the inferior spreading of the outer lip turned backwards. Fernando Po; on stones in small streams. Frazer. 43. NeRITINA INTERMEDIA (pl. exiv. f. 169, 174, 175, 176), Sowerby, senr., Pro. Zool. Soc., 1832, p. 201. N. globosa, Broderip, et N. tritonensis, Le Gwillon. “N. testa suborbiculari, olivaceo-fuscd, nigro reticulata’; dorso subgibboso ; labio externo intts levi, albicante ; labio columellari subflavo, planulato, margine centrali ruguloso.” 3X2 520 We cannot recognize any specific difference between WV. cnter- media ad N. globosa, and both are so peculiarly formed as to present the idea of WV. /atissima, with the expansions only com- mencing their development. On stones in a mountain stream in the Island of Lions, Bay of Monteja. Also in a rivulet at San Lucas, in the Gulf of Nocoya, Central America. 44, Nerrrina Guayaquitensis (pl. exiv. f. 177), D’ Orbigny. N. testi WV. intermedia simili, sed spiri exertiusculi; labio interno breviusculo, subtumido. Resembling WV. intermedia, but more globose, and with the inner lip shorter and tumid. Realeijos, Guayaquil. Cuming. 45. Neririna punorutata (pl. exv. f. 192), Zam., Anim. s. vert. ; Conch. Il. f. 21. N. testa subglobosa, epidermide tenui induta, maculis subviridi- bus seriebus obliqquis nigro marginatis picta ; spira subcelata ; apice rotundato ; ; aperturd magni; labio externo iterné albo, margine superné fluctuato, ad suturam extenso, canalem formante ; labio interno subplanulato, fulvo, superné angusto, margine in medio dentato. Rather globose, with white spots, showing greenish through the thin epidermis, and margined with black lines; spire nearly hidden; apex of the shell rounded; aperture large; outer lip white within, with the margin curved at the extended upper part, so as to form a canal; inner lip nearly flat, yellowish, narrow at the upper part, broad below, dentated at the centre of the edge. Jamaica; on stones in small rivers. P. H. Gosse. 46. Nerrrina Arra (pl. exv. f. 193), Sowerby, Conch. Il. f.39. N. Africana, Recluz, Revue Zoologique. N. testi V. punctulate simili, sed anfractu ultimo minori, apice angustata. This species presents the idea of a specimen of NV. punctulata taken in a soft state and pinched up at the apex, so as to narrow the upper part of the aperture, and make the body-whorl less in proportion to it. Fernando Po. Frazer. 521 47, Neritina Casstcuum (pl. exv. f. 194), Sowerby, Conch. Tllust. f. 55. N. testa subglobosi, epidermide viridi induté, maculis inequa- hibus, nigro-lineatis, obscuré triserialis ; sub epidermide variegata ; spird obtusd, anfractibus subrotundatis quatuor; aperturd semi- circulari; labio externo superné declivo, margine crassiusculo ; labio interno aurantio, subtumido, margine minuté denticulato. Of a globose form, slightly inclining to oval, with an olive- green epidermis, under which may be seen numerous black lines, angulated so as to leave white, triangular spots, which are larger in three bands across the shell; spire obtuse, consisting of four whorls; aperture semicircular, with the outer lip slightly thick- ened, and the columella inclining to orange, narrow, swelled, and minutely crenulated on its nearly straight edge. Locality unknown. 48. NERITINA TRISERIALIS (pl. cxv. f. 195, 196), Sowerby, junr., Conch. Hl. f. 60? N. testi subquadrati, cinered, maculis albis nigro marginatis, precipué seriebus tribus variegat’é; spird planiuscula, anfractibus angulatis ; apertura alba ; labio externo subexpanso, superné angu- lato; columella semilunari, subcomplanatd, minute crenulata dente unico obtuso. Rather square, flattish in front, grey, with black-edged white spots, so arranged as to form three bands lighter than the rest of the shell; spire rather flat; whorls angulated above; aperture wide; columella dentated. Locality unknown. 49. Nurivina TRITONENSIS (pl. exv. f. 197, 198), Le Guatton, Rev. Lool., 1841, p. 345. N. Dringti, Recluz, MS. N. testa obliqué ovali, glabra, viridi vel rubescente, fasciis et punctis luteis varié picti; spird parva, anfractibus declivis tribus ; apertura cinered ; labio externo ad spiram declivo ; columella cre- nulata et bidentata. More oval longitudinally than NV. Sowerdii, with the outer lip more sloped at the upper part. Of the smaller specimens named N. Dringti, 1 Mr. Cuming’s collection, by M. Recluz, one is transversely banded, and another longitudinally striped. New Ireland, &. B. Hinds, Esq. R.N. Var. N. Dringii, Hanover Bay, North Australia, by J. #. Dring, Esq., RN. 522 50. Nerrrmva Sanpatina (pl. cxv. f. 199), Recluz, Rev. Zool., 1842, p. 76. “N. testa semiglobosi, interdum subovata, subsuturd compresso- strangulata, fusco-nigra. tenuiter striati; apice convexo-obtuso ; apertura albido-lutescente; labio plano, margine vix arcuato et obsoleté denticulato ; labro patulo, superné depresso, lined nigra marginato.” Of a semiglobose form, with the whorls rather depressed near the suture; the aperture wide, with the upper part of the outer lip extended towards the spire; inner lip very slightly curved and obsoletely dentated. Sandal Bay; on stones in mountain streams. 51. Neritiva Perrorerriana (pl. exv. f. 200, 201), Recluz, Rev. Zool., 1841, p. 337. “N. test& ovati, semiglobosi, fusco-nigricante, tenuissimé striata; anfractibus tribus, ultimo superné coarctato ; spird brevi, convexi, obtusata; labio plano, albido, in medio vix arcuato ob- soletéque crenato.” A small, black, semiglobose shell, with the spire nearly hidden ; the aperture blueish, with a semicircular, flat, buffish columella. “Sur les Monts Nielgherries, la cdte de Malabar;” Recluz. Ceylon; Dr. Grayham. 52. NeRirina LONGIsPINA (pl. cx. f. 62, 63), Recluz, Rev. Zoologique, 1841, p.312. N. corona, Lamarck, Anim. s. vert., Non Linneus. N. test& obliqué ovali, levi, epidermide nigr&é induté, obscuré nigro fasciati, spinis elongatis, nigris, recurvis coronata ; apertura magni, margine posticé prominente, ad suturam subcanaliculato ; labio interno plana, aurantid, margine levi, in medio emarginato ; spird brevissima, anfractibus parvis, compressis, paucis, ultima maxima posticé versus suturam subrotundata. This common species, which is named in most cabinets WV. corona, Linn., on the authority of Lamarck, does not in reality agree with the figures quoted by Linneeus, nor with the shells in his collection. It is large, obliquely oval, with a dark blackish brown epidermis, through which black bands are seen. The spines are long, and turned backwards. The aperture is large, the inner lip septiform and orange-coloured, without teeth. On stones in small streams ; Island of Rodriguez. &. B. Hinds. 5238 53. Neririna spinosa (pl. cx. f. 61, 64), Budgin, Sowerby, Tank. Cat., no. 1102. N. testa MW. dongispine simili, sed spinis brevioribus, plus numerosis ; anfractibus spire plus elevatis, ultim’ minis expans4; apertura anticé subangulaté; epidermide pallida, striis nigris fas- ciata. Like WN. longispina (Sp. 52), but with shorter and more numerous spines; the whorls of the spire more elevated, the last whorl not quite so large; the aperture slightly angular anteriorly ; the epidermis a pale olive-green, with very sharply marked black bands. From Tahiti. Cuming. 54, Nuririna Rectuzrana (pl. ex. f. 56, 57, 58), Le Guallon, Rev. Zool., 1841, p. 345. N. testé obliqué subovali, nigra, maculis luteis picté, spinis breviusculis recurvis coronaté; spira brevi, anfractibus angulatis ; apertura’ magna, alba, subobliquaé; labio externo inferné subpro- ducto, superné ad suturam depresso ; labio interno obliquo, sub- complanato, margine in medio arcuato, dentato. The aperture is sometimes expanded so as render the whole figure as obliquely oval as NV. Zongispina, but the whorl above the spiniferous angle is always more rounded; the columella is gene- rally narrower, but in one specimen of the spineless variety it is broad and swelled; the outer surface is black, with orange spots. Onstones in small streams ; New Ireland. 2. B. Hinds, Hsq., R.N. : 55. Neririna corona (pl. cx. f. 46-50; Var. mutica, pl. cix. f.1, 2), Linnaeus, Syst. Nat. ‘Nerita,’ no. 720. N. montacuta, Recluz, Zoological Proceedings, 1842, p. 174. N. brevispina, Lam., Sowerby’s Conch. Ill. f. 8, a, 4, ¢. N. test& obliqué subquadrata, longitudinaliter subplicata, epider- mide tenui induta, fasciis et maculis varié pict ; spird planiuscula, anfractibus quatuor, superné angulatis, ad angulum spinis attenu- atis plus minusve recurvis coronati ; aperturd mediocri, plerumque alba; labio externo inferné vix angulato; labio interno angusto, subcomplanato, margine in medio arcuato, superné et in medio obtusé dentato. Of a squarish form, externally plicated, and variously spotted or banded; spire flat, consisting of four whorls, which are angu- lated and coronated with middle-length, tapering spines ; aperture middle-sized, with the outer lip simple, having a tendency, parti- 524 cularly when young, to be angulated at the lower part ; columella obtusely dentated, having a sinus in the centre. The figures re- ferred to, and the specimens in the Linnean collection, point to this species as being the true WV. corona of Linneus. Island of Burias, Philippines ; on stones in small rivers. Cuming. The spineless specimen figured (pl. cix. f. 1, 2) is from Western Africa. 56. Nerivrna BREVISPINA (pl. cx. f. 45, 51, 52), Lamarck, Anim. s. vert., New Ed., vol. vin. p. 572. N. testd WV. corone simillimd, sed spinis brevioribus, crassiusculis, truncatis ; apertura magis contracta ; colore rubescente, lineis nigris et maculis albis picti. A thicker shell than WV. corona (Sp. 55), with the aperture smaller and yellowish; the spines thicker and truncated ; the colour red- dish, with black longitudinal lines, which are arcuated so as to leave small whitish spots. Philippines. Cuming. 57. Neririna suBGRANOSA (pl. ex. f. 835-38), Sowerby, Conch. fi. f.44. N. ruginosa, Recluz, Rev. Zool., 1841, p. 310. N. testa WV. corone simillima, sed sulcis longitudinalibus nigro et albo marginatis rugulata, subviridi, anfractibus ad suturam elevatis. Resembling WV. corona (Sp. 55), but with longitudinal fluctuating grooves, which are edged by black and white interrupted lines. The whorls are elevated at the suture. The spineless variety, f. 35, is the same as that figured for the species in Conch. Ill. f. 14. 58. Nuririna aspersa (pl. cx. f. 43, 44), Recluz, MS. N. testi W. corone simili, sed minuté rugulata, extis nigra, punctis minutis albis sparsd, interné subviridi, ad basin columelle obliqué unicarinaté; apertura inferne angulata. Resembling WV. corona (Sp. 55), but with the surface roughened by minute undulations, and an oblique keel behind the lower part of the columella. The colour is black, sprinkled with minute white specks outside, and greenish inside. The aperture is more decidedly angulated, especially when young, than NV. corona. We have figured one specimen which has two rows of spines, some of them double: this is accidental. Sandwich Islands. Mr. Cuming’s Collection. 525 59. NerRitiIna opscurata (pl. cix. f. 28, 29), Recluz, Rev. Zool., 1842, p. 183. N. test&é WV. corone simili, sed crassiore ; epidermide crassi, nigra vel fusca nigro bifasciaté; labio externo ad suturam magis elevato, plicis longitudinalibus magis zegularibus et distantibus. A more solid and smooth shell than WV. corona (Sp. 55), with the outer lip more turned up towards the suture, and the plice more regular, distant, and smooth. Mindinao, Philippines. Cuming. 60. Nerirmna Soutnyetana (pl. cx. f. 59, 60), Recluz, Rev. Zool., 1842, p. 182. “N. testi ventricoso-globosi, tenuiter striata, nitidaé, nigra, lineis longitudinalibus, seepiis undulatis, ornata; anfractibus tribus, ultimo superné spinis maculatis instructo; spiri prominula; apice decorticato ; apertura rotundata, basi vix dilatata, flavicante ; labio angusto, plano, medio concavo, superné calloso, anticé subrecto, unidentato et obsoleté ruguloso.” I copy the description by Recluz, because the only specimen I have seen is young, and has but one spine. Although the shell seems to combine many characters of other spinose species, it does not seem exactly like any one of them. From the Marquesas. 61. Neririna Benearensis (pl. cix. f. 30, 31), Chemn., x1. pl. 197. f. 1911? N. testé globosd, ponderosa, levi, epidermide fusc4 induta, maculis pallidis picté; spird subplanulatd, pane obtecta, anfractu ultimo ad suturam nigro fasciato, superné angulato, ad angulum plerumque brevispinoso; in medioventricoso; labio externo superneé angulato, labio interno superné calloso, inferné subplanulato ; margine dentibus in medio quinque parvis, uno crasso obtuso, deinde superné tribus parvis obtusis. This species differs from others of the spinose section in having the spire nearly hidden, and being ventricose in the middle of the whorls. The angle is sometimes coronated with distant black spines. The shell is smooth, with large pale spots on a greenish ground, showing through a brownish epidermis. Bengal. 62. Neritina Dtapema (pl. cx. f. 41, 42), Recluz, Revue Zoologique, 1841, p. 277. N. testa WV. corone simili, sed levigati. 3Y 526 Like N. corona (Sp. 55), but smooth. Philippines ; on stones in small streams. Cuming. 63. Nerivina sPINIFERA (pl. cx. f. 53, 54), Recluz, Revue Zoologique, 1842, p. 183. N. testa NV. corone simili, sed levigaté, obliqué subelongata ; spiri subconicd ; colore rubescente, maculis albis trigonis seriatim oblique picta. Smooth, and more oblique, with the spire more elevated, than in NV. corona (Sp. 55). The spines are thinner. The painting con- sists of white angulated spots in obliquely crossed rows on an ob- scurely reddish ground. Philippines. Cuming. 64. Neritina Donovana (pl. cx. f. 39, 40), Recluz, MS. N. testi N. corona simili, sed levigati, longitudinaliter sub- ovali, spird elevatiusculd ; apertura superné magis angulatdi; colu- mellA anticé unisulcaté; colore rubescente, maculis albis trigonis serlatim positis, seu viridi, lineis undulatis longitudinalibus. Smooth, and witha more conical spire than JV. corona (Sp. 55), with the aperture angulated at the lower part; distinguished from N. spinifera (Sp. 63) by the latter character, and by a small semi- circular groove at the lower part of the columella. Island of Guimaras; on stones in a small rivulet. Cuming. 65. Neririna InTERRvPTA (pl. cix. f. 11, 12), Recluz, MS. N. test&é globoso-subquadrata, pallidé luted, levigata, lineis viridibus interruptis picta ; apice obtuse conico ; anfractibus tribus, superne oblique ad spiram elevatis; apertura obliqué, mediocri ; labio externo superné obliqué extenso, inferné rotundato; colu- melli angusté, complanaté, superné callosi; margine in medio emarginato, obtusé unidentato, et minuté crenulato. Variat fasciis luteis duabus. Of a globose, but slightly quadrate form, smooth, light yellowish, with green, interrupted, close lines ; apex rather conical ; aperture of middle size, with the columella rather narrow, flattish, but callous near the upper part; outer lip thin, raised obliquely towards the spire. I should not be surprised to see specimens of this with spines, as it has much of the character of the spimiferous species. Island of Luzon; on stones in a rapid river. Cuming. 527 66, Nerrrma Broonor (pl. exv. f. 204), Recluz, Pro. Zool. Soc., 1843, p. 200. N. testi WV. interrupte simili, sed solidiore, lineis continuis, apertura alba, columella tumida. No essential difference can be traced between this species and N. interrupta, excepting that it is a more solid shell, and has the columella tumid. The aperture is white, and the greenish limes are less distinct, and not imterrupted. Island of Luzon; on stones in a mountain stream. Cuming. ? 67. Neririna squamosa (pl. cix. f. 26, 27), Recluz, N. testa obliqué subquadrati, tuberculis trigonis luteis rugulata, inter tubercula rubra griseo trifasciata ; spird exsertiuscula, anfrac- tibus angulatis, superné subplanulatis ; apertura obliqua ; labio ex- terno subrotundato ; columelld albi, margine crenulato, in medio dentibus magnis duobus obtusis. Operculo cinerascente. Obliquely quadrate, with triangular yellow tubercles, reddish, with three blackish bands between the tubercles; the whorls are angulated, rather flat above the angles; the columella has two large, rather biunt teeth near the middle of the edge, with small crenulations between them. Island of Negroes; on stones in a mountain stream. Cuming. 68. Nerirmna crrcumvouovta (pl. exv. f. 202, 203), Recl.—? N. test globosi, subleevigatd, fulva, maculis minutis sparsa, nigro trifasciaté; spiri parva, apice obtuso, anfractibus subrotun- datis, ad suturam tumidis; apertura obliqua, albida ; labio interno subplanulato, superné calloso, ad marginem dentibus duobus ob- tusis et crenulis minutis. Operculo nigro. Of a roundish form, with very little of the spire visible; of a light brownish colour sprinkled with white and blackish spots, with three black bands, one at the suture, near which, when full- grown, the whorl is swelled; columella flattish, callous near the suture, with two blunt teeth, and minute crenulations on the margin. Island of Negroes; on stones in a mountain stream. Cuming. 69. NERITINA AVELLANA (pl. cix. f. 9,10), Reclwz, Rev. Zool., 1842, p. 76. “N. testé subglobosa, crassiuscula, roseo-violaced, maculis albis anterilis nigro marginatis, sagittatis, crebris, 3- seu 4-fasciata ; sutura lacted, maculis nigris arcuatis alternis laté cinct&é; spira 3 Y 2 528 planulata ; aperturd albi; labio plano, angusto, margine arcuato et ruguloso.” Rather square, with the spire rather flattened, and the whorls obtusely angulated above; colour tending to rose, with white spots, black-edged, and the epidermis light green. It is quite possible that this may be a spineless variety of VV. crassispina. Phihppine Islands. Cuming. 70. Nerirma Soversiana (pl. cix. f. 5-8), Recluz, MS. N.testa NV. avellane simili, sed subplicata, varie picta; anfractibus vix angulatis, super angulum magis elevatis ; labio externo declivo. Not so square in form as NV. aved/ana, with the upper part of the whorls more elevated, and the outer lip more sloping; the external surface is slightly plicated. On one specimen there are one or two spines. Island of Luzon; on the stony bed of a small river. Cuming. 71. Neririva rueata (pl. cix. f. 3, 4), Recluz, Rev. Zool., 1842, p. 75. N. testa obliqué subovali, nigra, tuberculata ; spira celata, apici obtus4 ; aperturd alba, obliqué subovali; labio externo rotundato, superné declivo; labio interno, semilunari, subcomplanato, in medio ad marginem crenulato et bidentato. Rather obliquely oval, black, tuberculated, with the spire con- cealed ; aperture white, obliquely oval; outer lip rounded, sloping towards the spire; inner lip rather flat, dentated and crenulated at the edge. Island of Negroes; in mountain streams. Cuming. 72. Nerirra cexata (pl. cxv. f. 205), Recluz. N. testa WV. znterrupte simili, sed solidiore; spira celata, an- fractu viridi fasciato ; apertura cimerea. More solid than WV. zaterrupta (Sp. 65), and differing from NV. bicolor (Sp. 66) in having the spire concealed by the last whorl, which is striped with green. South Sea Islands. 73. Nerivina suBpunctata (pl. exv. f. 206), Recluz, Pro. Zool. Soc., 1843, p. 199. “N, testa semiglobosd, olivaceo-fusci, tenuiter rugata; rugis punctis nigrescentibus seriatis notatis ; sub epidermide alba, nigro reticulata; anfractu unico, supra medium anguloso; apice perfo- 529 rato; apertura extis subrotundata, intis albo-cinerascente ; labio semilunari, plano, superné calloso, margime in medio tenuiter arcuato et crenulato; dente cardinali majore, truncato.” M. Recluz, in describing this species, expresses a probability of its being a variety of his WV. bicolor ; if, however, our specimen is characteristic, it is much more quadrate than that species, having more of an angle at the upper part of the whorl; and there is a difference in the upper part of the outer lip, which, in N. dccolor, is more curved towards the suture. “Sinait, province of North Hocos, Island of Luzon ; in a small mountain stream.” Cuming. 74. Neririna ottvacea (pl. exv. f. 207, 208), Guwad., Rev. Zool., 1841, p. 344. N. solida, Recluz, N. testi N. subpunctate simili, sed obliqué magis elongata, columella planiuscula, aperturd subquadrata, epidermide olivacea vel nigra. More lengthened in an oblique direction, and more quadrate, than NV. subpunctata, with the columellar callosity near the suture scarcely prominent. ‘The colour is even, of an olive-green, or, as in the variety named NV. solidum, nearly black. Island of Luzon; on stones in a rapid river. Cuming. 75. Neririna cHLorostoma (pl. cxv. f. 216), Broderip, Pro. Zool. Soc., 1832, p. 201. ““N. testé suborbiculari, elliptici, olivaceo-fuscé, nigro reticu- lata, subfasciaté ; apertura intus flava; labii columellaris margine obtusé unidentati, rugulosa.” Nearly orbicular, with the whorls slightly angulated, purplish or greyish, obscurely banded and reticulated with black ; aperture yellow, with the outer lip obtusely angulated above; the columella narrow, slightly tumid near the juncture of the outer lip, with the margin crenulated, and one rather large blunt tooth near the centre. Tahiti; at the mouth of a small stream, at times covered with salt water. Cuming. 76. Neritina Micuavpi (pl. exii. f. 108, 109, and pl. cxv. f. 217, 218 *), Recluz, Rev. Zool., 1841, p. 315. “N. testa subglobosa, tenui, olivaceo-fuscescente, lineolis nigres- * Repeated in consequence of an oversight. 530 centibus angulato-flexuosis pict; spira erosd, obliquissima ; aper- turd rotundata, albido-cerulescente ; labio angusto, planulato, in medio vix arcuato et crenulato ; labro superné subarcuato, anteritis subtruncato.” Of a globose form, thin, with zigzag lines on a greenish-brown ground ; aperture rounded, with the inner lip narrow, scarcely arched in the middle, and crenulated. Panama. Cuming. 77. Nerrrmna prota (pl. exvi. f. 267-269), Sowerby, senr., Pro. Zool. Soc., 1832, p. 201. “N, test subglobosa, cinerascente, maculis, sphacelis vittisque diversimodo picté; labio interno castaneo.” Subglobose, greyish, variously painted with black lines or reti- culations and whitish spots. There is a peculiar enamel-like ap- pearance about the external surface ; the columella is invariably of a chestnut colour, rather swelled, and obscurely crenulated at the margin. Panama; on a mud-bank, partially overflowed with fresh water. Cuming. 78. Nerina FaBa (pl. exv. f. 219-221), Sow., Con. Ill. £.10. N. testa subquadrato-globosa, laevigata, rufescente, fasciis trans- versis nigris, vel fasciis obliquis viridibus vel violaceis, et interstitis flavidis varié picté; spira parva, anfractu ultimo obtusé angulato ; labio externo anticé subproducto, superné subelevato ; labio interno minuté crenulato, vix arcuato. Resembling J. picta, but with the columella neither swelled nor of a chestnut colour, and the spire rather more hidden. 79. Neririna PULCHELLA (pl. exv. f. 209-211), Recluz, MS. N. testa WV. fade simili, sed quasi-subcylindricd, minuté picta ; apertura subcontracta. There is a peculiar cylindrical character in the form of this species, and the aperture is, as it were, drawn in all round. We have varieties of a dark green, reddish, or brownish ground, minutely grained with white specks. Island of Luzon; on stones in a small stream. Cuming. 80. Nuritina pupa (pl. cxi. f. 68, 69, pl. cxv. f. 212), Linn. Syst. Nat. p. 1253. N. tristis, D’ Ordigny, inclusa. N. testa obliqué ovali, levi, alba, lineis nigris longitudinalibus 531 strigata vel reticulata, vel nigra, punctis albis ; spira exsertiuscula, anfractibus superné declivis; apertura plerumque luted, obliqua ; columella angustata, margine crenulato. Resembling W. faba and N. pulchella; more obliquely oval, with the spire more produced, although obtuse; the aperture is rather narrow, yellow, with a narrow, flattish, dentated columella; ex- ternal surface white, with black, angulated lines, or reticulated with black, or as in the variety named WV. ¢ristis by D’Orbigny. West Indies. 81. Nerirma Jorpant (pl. cxv. f. 213-215), Sow., Conch. Illust., f.49. N. Elleppenensis, Recluz. N. test subglobosa, levi, nigré albo variegata, vel alba lineis purpureis fluctuatis pictd; spird exsertiusculd, anfractu ultimo ad suturam subtumido, prope medium plus minusve contracto ; aper- tura posticé subcontracta, anticé subexpansd ; labio externo prope suturam subangulatim elevato. Of a globose form, inclining to oval, with a tendency to con- traction in the middle of the last whorl or nearer the upper part. River Jordan. 82. Neririna Macrt (pl. exvi. f. 222), Recluz, MS. N. testa subovali, nigra; spird exsertiuscula ; apertura obliqua, labio interno subtumido, griseo, levi. Resembling the darker variety of WN. Jordani, but having no tendency to contract in the middle of the last whorl. Asia Minor. Capt. Spratt, RN. 83. NERITINA ARCTILINEATA (pl. exvi. f. 223, 224), Recluz, MS. N. testa obliqué subovali, grisea, lineis subpurpureis undulatis picta; spird parva; apertura subexpansa; labio interno obliquo, aurantio, subplanulato, levi. Of an obliquely subovate form, grey, with purplish, undulated lines; spire short; aperture rather expanded; columella semicir- cular, flat, orange-coloured, smooth. Locality unknown. 84. Nerivina anatorica (pl. cxvi. f. 225, 226), Recluz, Rev. Zool., 1841, p. 342. “N. testa subovata, violacea, tenué striati; spird brevissima, 532 rotundato-obtusa, apice minimo, laterali; labio subobliquo, albido- cerulescente, inferné dilatato, subconvexo, margine recto, acuto.” Of an oval form, violet, scarcely striated; spire short, rather obtuse ; outer lip slightly obtuse, blueish within ; columella semi- circular, flattish, straight, and smooth. Some specimens, marked by M. Recluz as N. Africana, which are lineated with purple, but much worn, we take to be a variety of this. Smyrna. 85. Neririna viripis (pl. cxvi. f. 229, 230), Linn., Syst. Nat. p. 1254. N. testa obliqué oval, levi, viridi, albo maculata ; spira obtusa ; apertura ellipticd, labio externo anticé producto; columella semi- circulari, plerumque tumida ; margine in medio crenulato et paulu- lim arcuato. A small, pea-green, smooth, obliquely oval shell, with the outer lip produced near the base, and the columella semicircular, gene- rally swelled, slightly arcuated and crenulated in the centre. Sicily, the Antilles, Guadaloupe, and Cuba. 86. Nerirmya Ranetana (pl. exvi. f. 227, 228), Recluz, Rev. Zool., 1841, p. 339. N. viridis, var. major, Rang. N. pallida, Risso. N. testa NV. viridi simillima, sed anfractu ultimo superné an- gulato, testé plerumque majore, lineis albis et rubris seriatim variegata. Differing from JW. viridis in the angularity of the last whorl, and consequently of the outer lip at the upper part; the outer surface is ornamented by several series of red-edged white lines, which are largest above the angle. Madagascar. ecluz. Dumaguete, Island of Negroes; on stones in a small stream. Cuming. 87. Neririna Luctvosa (pl. cxvi. f. 231), Recluz, Rev. Zool., 1841, p.317. N. rarispina, var. Recluz? N. siderea, Gould. N. parva, nitidé, subglobosa, nigra; spira exsertiuscula ; aper- tura elliptic’; columellé angustata, luted, plana. A small, smooth, subglobose shell, with an obtuse, but slightly elevated spire, and a narrow, yellowish, fiat columella, which is nearly straight and smooth at the edge, but has above the centre a rather prominent tooth. 533 88. Nerivina rectivata (pl. cxvi. f. 240, 241), Say——? N. macrostoma, D’Orbigny. N. Floridana (?), "Shutileworth. N. testa obliqué subconicd, solida, levi, subolivaced vel nigres- cente, minutissimé nigro lineata ; spira exsertiuscula, apice obtuso, sutur’ nigro lineata, anfractu ultimo infra medio ventricoso ; aper- turd semicirculari, labio externo superné declivo, inferné producto, ad juncturam recedente, intis incrassato ; columellé oblique semi- circulari, plerumque albido, validé omnino calloso, ad marginem in medio subarcuato, dentato. Taking this as the type of a small series of species, which have at least one character in common, that is, the bulging out, as it were, of the lower part of the last whorl over the aperture, we shall point out wherein the succeeding species differ from it. The bulging out of the last whorl increases the appearance of receding in the outer lip, where it joms the body of the shell. This species is rather conical, with the spire somewhat produced, but obtuse; it is smooth, of a lighter or darker greenish colour, with very fine black undulating lines, and one spiral line at the suture; the outer lip is, as it were, pmched in near the suture and the lower junction, and is thickened near the edge. The columella is very tumid, generally slightly tinted with orange at the left margin, and obtusely dentated at the right. Vera Cruz, Mexico; on stones in rivers. 9. Nerina Virernta (pl. exvi. f. 232-239), Linn., Syst. Nat., p. 1254. no. 730. N. Braziliana, N. Leachu, &c., Recluz. N. testa obliqué subconici, solida, levi, coloribus diversis varie fasciata, punctata, lmeata, fasciata vel reticulaté: spird subconica, antractibus anticd subgibbosis ; apertura obhqua, antice subpro- ducti; columella’ gibbosi, margine crenulato. T cannot see any reason for changing the name of this well- known species, even if there should be some shght cause to doubt the correctness of the application which has been so generally adopted from Lamarck. ‘The species of Linnzeus were not gene- rally well defined, and we may, therefore, well admit an identifi- cation which has been generally received, in the absence of proof positive to the contrary. Nor do I see the propriety of separating the varieties which have been labelled by M. Recluz in Mr. Cuming’s collection with the names quoted above, unless, indeed, we were prepared to take every specimen and name it as a species : no two individuals bemg exactly ahike. We might be almost disposed to include WV. rectivata in this species, but the upper 32 Dd4 part of the whorls bemg more conical, and the peculiarity of marking being constant in the former, we think it will always be recognized with facility. In the Alcence of any real definition of the word species as applied to shells, we should generally be guided in our divisions by the facility with which a specific dis- tinction would be recognized. West Indies, Brazil. 90. Nerirmva Merrontana (pl. exvi. f. 242-246), Recluz, Pro. Zool. Soc., 1843, p. 71. N. Oualanensis, Lesson. N. nebu- lata, Recluz. N. testi N. Virginia simili, sed magis subglobosi, anfractu ultimo superne subangulato. The variety, f. 246, N. Oualanensis, Recluz, is thinner and generally smaller than the other variety; the variety V. uebulata, Recluz (£243), is larger, and marked with scales as in WV. mclea- gris, but we can only ‘distinguish the three frou WV. Virginia by one character which they have in common, which is, that a) are rather more globose, and have a very Sunt, rounded angle a the upper Re of the whorls. Var., f. 246, Oualay, Sandwich Islands, and Port Essington ; £242, 4, 5, VW. Mertoniana, Island of Negroes ; on stones in a small stream; var. V. nebulata, ditto. Cuming. 91. Nerina Listers (pl. exvi. f. 249-251), Pfeiffer. N. test WV. Virginia et N. rechvate simili, sed multim magis globosa, spird plana. More globose than N. Virginia and N. reclivata, with the whorls of the spire not at all produced. Some varieties of V. Vir- ginia occur which are almost equally globose; but in these the spire is more produced. The large specimen, f. 249, is from Cuba; the other variety is from St. John’s river, Nicaragua. 92. NERITINA MELEAGRIS (pl. cxvi. f. 252, 253), Lamarck, Chemn., 124. f. D. L. N. testi NV. Virginie simili, sed magis globosi, minis obliqua, spird subconici sed mints producta. More globose and less oblique than WV. Virginia; the spire, although conical, much more central, and less produced; the upper part of the last whorl being more elevated, but not so much so as in WV. Mertoniana. The markings are in scales. The spire is not so flat as in MN. Laster. Honduras Bay. Dyson. Also Sumatra. 93. Neririna Anatensis (pl. cxvi. f. 247, 245), Recluz, MS. N. testa obliqueé ovali, tenui, fulva, lineis nigris undulatis ob- secure pictd; spird subconicd, anfractibus declivis, ultimo ad sutu- ram subtumido, sub medio ventricoso ; apertura’ subtrigond ; labio externo superné declivo, anticée producto ; columellé alba, semicir- culari, tumida. Rather oval, but obliquely ventricose at ithe base, and tapering towards the spive, which is rather produced; the shell is thin, of a greyish brown colour, reticulated with black lines; the columella is white, semicircular, and swelled. Portugal. 94. Nerina Avansoniana (pl. exvi. f. 254, 255), Recluz, Rev. Zool., 1841, p. 318. N. iesté WV. Anatensi simili, sed crassiore, apice obtusiusculo, anfractibus ad stituram magis twnidis. Like N. Anatensis (Sp. 93), but more obtuse, thicker, with the whorls more tumid near the suture. Senegal. 95. Nerrrina GLABRATA (pl. exvi. £.256-263), Sowerby, junr., Pro. Zool. Soc., 1850. N. test& parva, obliqueé ovali, glabra, plerumque pallidé fulva, lineis fasciisque rubris vel migris varie pict; spird obtusi, apice obtuso, sublaterali, anfractibus vix duobus, ultimo superné declivo, inferné obliqué subgibboso; apertura parva, semilunari, bicanali- culato ; labio externo superné declivo, inferné obliqué producto ; columella expansd, laevigata, rotundati, gibbosi, albi. Operculo parvo, corneo, subgriseo. A beautiful hittle shining shell, variously banded, lineated, and spotted with white, black, and red, on a light fawn-coloured ground. It is remarkably oblique, with an obtuse spire of scarcely two whorls, and the aperture small, obliquely produced at the lower part; the columella is white, smooth, and gibbous, in ex- pansion forming about three-fourths of a circle. There are many specimens of this elegant and very distinct species in Mr. Cuining’s Collection ; but the locality is unknown. 322 536 96, Neririna reticuLarts (pl. cxvi. f. 264-266), Sowerby, Conch. Hl. f. 44. Sp. 51. Var. N. capillulata, Gould. N. test’ subconicd, levi, pallidé fulva, rufescente, epidermide tenul, subvinidi induté, lineis angulatis transverse reticulata ; spird plerumque exsertiusculd, apice subcomplanato, anfractu ultimo, supra suturam angulatim elevato, infra medium ventricoso ; aper- turd subcontracté, labio externo superné declivo, infra medium producto, columella tumida, margine sublevigato. The shell varies considerably i in form, but the upper part of the last whorl is more or less obtusely angulated, so as to give a flat- ness to the apex of the spire; the apex is rather contracted at the suture, but produced at the lower part; the columella is very gibbose. Altogether the shell is less gradually sloped than J. reclivata, and the markings are less close and reticulated trans- versely. The variety named NV. capillulata (f. 266) is generally shorter, and the markings less distinct. Calcutta. Var. V. capillulata, Burmah. 97. Neririna Linnoxata (pl. exu. f. 101, 102), Lam., Anim. s.vert. Neritina, Sp. 14. Hae. d/et., pl. 455. f. 4, a, 6, Sowerby, Conch. Ill., f. 37. N. test& solidd, subglobosa, levi, epidermide subviridi induta, lineis elongatis nigris flexuosis picté; spira exsertiuscula, anfracti- bus superné declivis, inferné ventricosis ; apertura albidd, labio externo anticé rotundato ; columella obliqua, subgibbosa, obscuris- simé subcrenulata. A thick, solid, subglobose, smooth shell, covered with an olive- green epidermis ; the spire obtusely conical ; the upper part of the whorls narrow, sloping, the lower part veutricose ; the colu- mella is thickened, very obscurely crenulated at the 1 inner margin, very distinctly defined on the body-whorl. In the variety figured in the Conch. Llust., the black, longitudinal, fluctuated lines are narrower and more numerous than those in the other variety. 98. Nerrrina soprina (pl. cxu. f. 100), Recluz, MS. N. Zebra, Sowerby, Conch, Ul. f. 31, non Lamarck. N. testa V. Zincolate simili, sed magis globosi, spird magis ob- tusi; labio mterno minis distincto, labio externo intis incrassato. More globose than WV. “ineolata, with the spire less produced ; the markings are broad and angulated. 537 99. Neririna srrroiata (pl. oxi. f. 98, 99), Mectuz, MS. N. test’ N. Uineolate simili, sed magis globosi, obscurissime longitudinaliter striaté; spird magis centrali, anfractibus superné mints declivis ; columell’ validé crenulatéi; testa pallidiore, lineis sparsis, interrupts. More globose and less oblique than NW. dineolata (Sp. 97), with the columella more decidedly crenulated. The longitudinal striz are scarcely visible to the unassisted eye. The markings are minute, few, and interrupted. 100. Neritiva Gacates (pl. cxu. f. 1038, 104), Lam., Sow. Conch. IIL, f. 29. N. testa globosi, solida, levi, epidermide crassa, nigra induta, sub epidermide angulatim nigro lneati; spird brevissima ; aper- turf alba, laté; columella tumida, semilunari, margine vix crenulato. Very globose, thick, smooth, covered with a thick, black epi- dermis, beneath which zigzag black markings may be seen. ‘The aperture is wide, white, and the columella swelled, white, gene- rally edged with pale orange. The specimen represented (f. 104) with a scarcely-formed epidermis, 1s in the collection of S. Hanley, Hsq. Island of Sumatra; on stones. Cuming. 101. Nurrrma Carvra (pl. ext. f. 111, 112), Wood, Suppl. pl. vii. f. 10. N. testa VW. Gagatz simili, sed spira conica, labio externo superné declivo. Resembling NV. Gagates (Sp. 100), in some degree. This species has been confounded with it; but it 1s much more conical, and the upper part of the outer lip more sloping. Mauritius. 102. Nerrrma Suri (pl. exii. f.117, 118), Gray, Sow. Conch. Ilust. f. 9. N. undata, Deshayes. N. test& globoso-subconica, crassa, levi, alb’, maculis et fasciis lineisque longitudinalibus, flexuosis, interruptis pict, epidermide tenui induta; spird conicd, anfractibus superné declivis, inferné rotundatis ; apertura subobliqua ; labio externo inttis incrassato ; columella tumida, fusco tincti, ad marginem denticulata, in medio denticulata. Operculo nigro. Of a more or less conical form, with the upper part of the 538 whorls gently sloped, thick, white, with strong black, longitudinal, undulating, and interrupted lines and bands; columella thick, with an orange brown tint near the outer edge, the immer edge toothed, with a short sinus in the centre ; operculum black. Of the two specimens figured, one is more and the other less conical than the average. Banks of the Ganges, Calcutta. 103. Nerirmva communis (pl. cix. f. 14-25), Quoy et Gaim. Voy. Astrol. N. elegantina, PZilippi, Abbildungen, p. 25. t.1.f. 3. N. test& ovali, subconici, VW. Smithii simili, sed anfractibus minis rotundatis, labio externo prope suturam elevato ; columella minus tumida, vix arcuati; epidermide tenuissima; testa varie picta. Of a more oval form than N. Smithii, with the slope of the spire more gradual; the columella is not nearly so gibbous, and scarcely arched; the outer lip has a shght elevation near the suture, is thinner and rather more expanded ; the external surface is variously painted. Island of Siquijor, Phiippmes; on stones in a small stream. Cuming. 104, Nerrrma puumBea (pl. exu. f. 119, 120), fecluz, MS. N. Nux, Brod.? N. testa N. communi simili, sed magis globosi; apertura majore. A more ventricose shell than NV. communis, and with a larger aperture. The typical variety is of a leaden colour; another is of a lemon tint, and the other is olive, with dark broad bands. Island of Bohal, Philippines. Cuming. 105. Nurivina Zepra (pl. cxu. f. 96, 97), Lam., Anim. s. vert. Nerita, no. 4. N. testa globosi, subconici, glabra, epidermide crassa mduta, fasciis perobliquis picté ; apertura magna, labio externo itis in- erassato ; columellé subgibbos’, in medio paulultm arcuati, den- ticulata. Of a subglobose form, with the spire inclining to conical, not very thick, covered with a rather thick epidermis, through which very oblique black bands are seen, ‘The aperture is large; the outer lip thin near the edge, but thickened within; the columella of a dull smoky-brown colour, not much thickened, slightly arched in the centre of the edge, and denticulated. Tahiti. 539 106. Nerina Tourtons (pl. exu. f. 92, 93), ——?P N. testa WV. Zebra simili, sed aufractibus prope suturam depressis ; columellé complanata, castaned. Resembling WV. Zebra, but with the whorls rather depressed near the suture, and the columella rather flat, and of a chestnut colour. New Iveland. &. B. Hinds, Esg., RN. 107. Nerirtna turrira (pl. exi. f. 91, 118, 114), Chemn. ix. t. 124. £1085. NN. strigilata, Lam. Var. (f.91) N. Royssiana, Recluz. N. testi N. Zebre simillima, sed magis conic’, spiri magis ex- serti, labio interno tumido, carneolo. Resembling WV. Zebra, but with the spire more produced, and the umer lip more tumid. ‘The variety (f. 91) named J. foyssiana, Recluz, and figured in the Conchological Mustrations as NV. strigilata var., is smaller, and has the black markings very small and angulated. Madagascar. 108. Nerirma semurcontca (pl. exi. f. 116), Lam., Anim. s. vert. Sow., Conch. Ill. f. 23. N. testi NV. Zebre simili, sed magis conici, solidiore, labio in- terno tumido, carneolo ; NV. turrite stmili, sed magis ovali, maculis nigris in fasctis tribus picta. This is so distinctly recognizable as a species of Lamarck, that we do not push our scruples to the extreme against admitting a specification which has so little beyond arrangement of colour to sustain it. The shell is like \. ¢wrrita, but rather more solid, and has the slope of the spire more gradual. The three bands of dull grey are marked by angular black spots. Banks of the Ganges, Calcutta. 109. Nuritrina putcHra (pl. cx. f. 89, 90), Sow., Conch. Ti i2b9. N. testa WV. Zebre simili, sed columelli subcomplanata, vix crenulati, fulvo tincta, epidermide translucidé, rubro et nigro varié picta. The columella is flattish, scarcely crenulated, with a touch of yellowish colour. Under the somewhat transparent epidermis may be seen a broad-meshed reticulation of red in two bands and black in three. Panama. Cuming. 540 110. Nerrrina Zrozac (pl. exu. f. 105, 106, 107, 110), Lamarck, Anim. s. vert. N.Coromandeliana, Recluz, Incl. N. testa NV. Zebra simili, sed solidiore ; columelli magis tumida, epidermide tenui, lineis et “fasciis obliquiis varie positis. More solid than V. Zebra, with the columella more tumid. The black markings are very variously placed. The variety from Coro- mandel (f. 110) has angular spots placed diagonally. In the absence of certain identification, we follow Dr. Philippi, im ap- plymg the name to this species. Tahiti, Manilla, and the Island of Luzon, Philippines. Cuming. 111. Nerrrmva Cuvrnrana (pl. exii. f. 94, 95), Recluz, Rev. Zool., 1841, p. 338. N. testa WV. Smithii simili, sed apertur’ majore, anfractibus su- perné elevatis ; columellé subcomplanata, rubro marginata ; colore griseo maculato et nonnunquam fasciato. Differmg from N. Smithii in the largeness of the aperture, the flatness of the red-margined columella, and in the arrangement of colours; it approaches nearer to N. communis, from which it differs principally m the shape of the spire, the upper part of the whorls being depressed close to the suture, and then slightly elevated. New Ireland. &. B. Hinds. 112. Neririna Cumtnetana (pl. ex. f.115), Recluz, Rev. Zool., 1842, p. 77. N. test’ WV. ¢turrite simili, sed solidiore, longe magis conica, anfractibus quatuor validis, declivis. Resembling NV. ¢urrita in the characters which distinguish that species from N. Zebra, and differmg from it in being still more conical, having four deep and gradually increasing whorls. The shell is also more solid, and the epidermis thin. Island of Siquijor; on stones in mountain streams. Cuming. 113. Nerrrmva avrerrtma (pl. exvi. f. 270), Koch, Phil. Abbil¢stoted. ll. N. testa globoso-subconicd, nigri; spira exsertiusculd, anfrac- tibus propé suturam subexcavatis; apertura obliqua, albi, labio interno subcomplanato, ad marginem in medio paululum emargi- nato, minuté dentato ; labio externo subtits subproducto. Rather nearly resembling WV. caffra (Sp. 101), next to which it 541 should be placed; but with the columellar lip not at all tumid, the spire more produced, and having a much stronger excavation near the suture. 114. Nerrrina Gurverti (pl. exvi. f. 272), Recluz, MS. N. test transversé subovali, solida, nigr4, transversé striata ; spiri, depress’, apice planulato; aperturd magna, flavidai; labio interno planulato, minuté dentato; labio externo subexpanso. Rather solid, black, transversely striated, of an oval form, with depressed spire, and should come near V. Morio (Sp. 24). The aperture is yellow, with the inner lip flat, the outer lip rather expanded. 115. Neririna tueusris (pl. exvi. f. 271), Philippi, Abbil- dungen, 1 band, 2 hef., p.20. Neritina, pl. 1. f. 9. N. test& transversé subovali, nigra, levi; spird depress’, apice plano; aperturd magna, ceruled; labio interno levi, planulato ; labio externo subexpanso. Less solid than V. Guinerit (Sp. 114), and should be placed with it near NV. Morio (Sp. 24). The aperture is blue, with the imner lip quite flat and smooth, and the outer lip expanded and slightly angular near the lower edge; the external surface is smooth and black. Sandwich Islands. Phzlippi. 116. Nerrrina sorrpissima (pl. exvi. f. 273), Sowerby, junr., Pro. Zool. Soc., 1849. N. testa subglobosd, solid’, migra, transversé striati; spira depress’, apice planulato; apertura magna, albi; labio interno planulato, margine recto, dentato ; labio externo superné et inferné expanso, subangulato, intis incrassato. This species presents the idea of NV. cariosa (Sp. 3), in an early stage of growth before the full expansion of the outer lip; it is, however, a much more solid shell; the inner lip is flat, and the outer lip thickened within. NERITINA eee LIST OF FIGURES IN PLATES CIX. to CXVI. (The Figure after each name is the number of the Species.) Mig. Pate CIX. 1, 2. N. corona, var., 55. 3, 4. — rugata, 71. 5-8. — Soverbiana, 70. 9, 10. — avellana, 69. 11, 12. — interrupta, 65. 13. — Becki, 17. 14-25. — communis, 103. 26, 27. — squamosa, 67. 28, 29. — obscurata, 59. 30, 31. — Bengalensis, 61. Puate CX. 32-34. — aculeata, 21. 35-38. — subgranosa, 57. 39, 40. — Donovana, 64. 41, 42. — Diadema, 62. 4.3, 44. — aspersa, 58. 45, — brevispina, 56. 46-50. — corona, 55. 51, 52. — brevispina, 56. 53, 54. — spinifera, 63. 56-58. — Recluziana, 54. 59, 60. — Souleyetana, 60. 61. — spinosa, 53. 62, 63. — longispina, 52. 64. — spinosa, 53. Prate CXI. 65, 66. — pulligera, 13. 67. —— cornea, 36, Vig. 68, 69. N. pupa, 80. 70, 71. — cornea, 36. 72, 73. — obtusa, 33. 74. — reticulata, 32. 75, 76. — canalis, 18. V7. — Petitii, 16. 78. — Knorru, 15. 79. — squamapicta, 22. 80. — labiosa, 25. 81-88. — dubia, 35. Prats CXII. 89, 90. — pulchra, 109. 91. — turrita, 107. | 119,120 92, 93. 94, 95. — Turtoni, 106. — Cuvierana, 111. 96, 97. — Zebra, 105. 98, 99. — striolata, 99. 100. — sobrina, 98. 101, 102. — lineolata, 97. 108, 104. — Gagates, 100. 105-107. —— Ziezac, 110. 108, 109. — Michaudii, 76. 110. — Ziezac, var., 110. 111, 112. — Caffra, 101. 113, 114. — turrita, 107. 115. — Cumingiana, 112. | 116. — semiconica, 108. 117, 118. — Smith, 102. . — plumbea, 104. Puarse CXIII. Wig. 121, 122. N. ovalis, 1. 123-125. — dilatata, 2. 126. — cariosa, 3. 127, 128. — Sandwichensis, 4:. 129, 130. — auriculata, 5. 131, 182. — vespertina, 6. 133, 134. — Tahitensis, 7. 135-137. — bicanaliculata, 8. 138. — subauriculata, 10. 139-144. —— erepidularia, 9. 145, 146. — Siquijorensis, 12. 147, 148. — depressa, 11. 149. — Powissiana, 14. 150. — Knorru, 15. Puate CXIV. 151, 152. — transversalis, 27. 153, 154. — succinea, 28. 155, 156. — Danubiensis, 30. 157, 158. — carinata, 31. 159. — Bruguieri, 19. 160, 161. — asperulata, 20. 162. — sanguinea, 23. 163. — Morio, 24. 164. — serrulata, 37. 165. — apiata, 38. 166, 167. — piperina, 39. 168. — Oweniana, 42. 169. — intermedia, 43. 170, 171. — granosa, 40. 172, 173. — latissima, 41. 174-176. — intermedia, 4:3. 177. — Guayaquilensis, 44. Priatre CXV. 178-186. — fluviatilis, 26. 187-190. — meridionalis, 29. 191, — Panayana, 34. 192. — punctulata, 45. [aos cs Nig. 193. N. Afra, 46. 194. — cassiculum, 47. 195, 196. — triserialis, 48. 197, 198. — tritonensis, 49. 199. — Sandalina, 50. 200, 201. — Perrotettiana, 51. 202, 203. — circumvoluta, 68. 204. — bicolor, 66. 205. — celata, 72. 206. — subpunctata, 73. 207, 208. — olivacea, 74. 209-211. — pulchella, 79. 212. — pupa, 80. 213-215. — Jordani, 81. 216. — chlorostoma, 75. 217, 218. — Michaud, 76. 219-221. — faba, 78. Pirate CXVI. 222. — Maeri, 82. 223, 224. — arctilineata, 83. 225, 226. — analotica, 84. 227, 228. — Rangiana, 86. 229, 230. — viridis, 85. 231. — luctuosa, 87. 232-239. — Virginia, 89. 240, 241. — reclivata, 88. 242-246. — Mertoniana, 90. 247, 248. — Anatensis, 93. 249-251. — Listeri, 91. 252, 253. — meleagris, 92. 254, 255. — Adansoniana, 94. 256-263. — glabrata, 95. 264-266. — reticularis, 96. 267-269. — picta, 77. 270. — aterrima, 113. . — lugubris, 115. 272. — Guinern, 114. 3. — solidissima, 116. 544 ALPHABETICAL INDEX. aculeata, Sp. 21, f. 32-34. Adansoniana, 94, f. 254, 255. Afra, 46, f. 198. Africana, v. Afra. amphibia, v. cornea. ampullaria, V. cornea. Analotica, 84, f. 225, 226. Anatensis, 93, f. 247, 248. apiata, 38, f. 165. arctilineata, 83, f. 223, 224. aspersa, 58, f. 43, 44. asperulata, 20, f. 160, 161. aterrima, 118, f. 270. auriculata, 5, f. 129, 130. avellana, 69, f. 9, 10. Beetica, v. meridionalis. Beckii, 17, f.13. bella, v. dubia. Bengalensis, 21, f. 30, 31. bicanaliculata, 8, f. 135-137. bicolor, 66, f. 204. Braziliana, v. Virginia. brevispina, 56, f. 45-52. brevispina, V. corona. Bruguieri, 19, f. 159. celata, 72, f. 205. Caffra, 101, f. 111, 112. canalis, 18, f. 75, 76. capillulata, v. reticularis. carinata, 31, f. 157, 158. cariosa, 3, f. 126. cassiculum, 47, f. 194. chlorostoma, 75, f. 216. circumvoluta, 68, f. 202, 203. communis, 1038, f. 14-25. cornea, Sp. 36, f. 67, 70, 71. Coromandeliana, v. Ziczac. corona, 55, f. 1, 2, 46-50. corona, V. longispina. crepidularia, 9, f. 139-144. Cumingiana, 112, f.115. Cuvierana, 111, f. 94, 95. Danubiensis, 30, f. 155, 156. depressa, 11, f. 147, 148. Diadema, 62, f. 41, 42. dilatata, 2, f. 123-125. Donovana, 64, f.39, 40. dubia, 35, f. 81-88. elegantina, V. communis. Lllepenensis, v. Jordani. elongatula, v. meridionalis. faba, 78, f. 291-229. fasciata, v. dubia. Jasciata, v. cornea. Floridana, v. reclivata. fluviatilis, 26, f. 178-186. Gagates, 100, f. 103, 104. glabrata, 95, f. 256-263. globosa, v. intermedia. granosa, 40, f. 170,171. Guayaquilensis, 44, f. 177. Guinerii, 114, f. 272. Hildreichii, v. fluviatilis. imquinata, v. meridionalis. intermedia, 43, f. 169, 174-176. interrupta, 65, f.11, 12. intexta, v. fluviatilis. Jordani, 81, f. 218-215. Knorrii, 15, f. 78, 150. labiosa, 25, f. 80. latissima, Sp. 41, f. 172, 173. Leachii, v. Virginia. lineolata, 97, f. 101, 102. Listeri, 91, f. 249-251. longispina, 52, f. 62, 63. luctuosa, 87, f. 231. lugubris, 115, f. 271. lutescens, v. meridionalis. Macri, 82, f. 222. macrostoma, v. reclivata. Mauritii, v. Sandwichensis. melanostoma, v. crepidularia. meleagris, 92, f. 252, 253. meridionalis, 29, f. 187-190. Mertoniana, 90, f. 242-246. Michaudii, 76, f. 108, 109, 217, 218. mittreana, v. fluviatilis. montacuta, V. corona. Moreleti, v. meridionalis. Morio, 24, f. 163. Morio, v. cornea. nebulata, v. Oualanensis. Numidica, v. fluviatilis. Nuttali, v. cariosa. obscurata, 59, f. 28, 29. obtusa, 33, f. 72, 73. olivacea, 74, f. 207, 208. Oualanensis, v. Mertoniana. ovalis, 1, f. 121, 122. Oweniana, 42, f. 168. Polaponensis, v. fluviatilis. pallida, v. Rangiana. Panayana, 34, f. 191. papillosa, Vv. granosa. Perrotettiana, 51, f. 200, 201. Petiti, 16, f. 77. Philippi, v. meridionalis. Philippinarum, vy. dubia. AS picta, Sp. 77, f. 267-269. piperina, 39, f. 166, 167. plumbea, 104, f. 119, 120. Powissiana, 14, f. 149. pulchella, 79, f. 209-211. pulchra, 109, f. 89, 90. pulligera, 13, f. 65, 66. punctulata, 45, f. 192. pupa, 80, f. 68, 69, 212. Rangiana, 86, f. 227, 228. rarispina, V. luctuosa. reclivata, 88, f. 240, 241. Recluziana, 54, f. 56-58. reticularis, 96, f. 264-266. reticulata, 32, f. 74. reticulata, v. dubia. Royssiana, v. turrita. rugata, 71, f. 3, 4. ruginosa, V. subgranosa. Sandalina, 50, f.199. Sandwichensis, 4, f. 127, 128. sanguinea, 23, f. 162. Sardoa, v. fluviatilis. semiconica, 108, f. 116. serratilineata, v. Danubiensis. serrulata, 37, f. 164. Siquijorensis, 12, f. 145, 146. Smithii, 102, f. 117, 118. sobrina, 98, f. 100. solida, v. olivacea. solidissima, 116, f. 273. Souleyetana, 60, f. 59, 60. Soverbiana, 70, f. 5-8. spinifera, 63, f. 53, 54. spinosa, 53, f. 61, 64. squamapicta, 22, f. 79. squamosa, 67, f. 26, 27. | strigilata, v. vurrita. striolata, Sp. 99, £98, 99. subauriculata, 10, f. 138. subgranosa, 57, f. 35-38. subpunctata, 73, f. 206. subsulcata, v. cornea. succinea, 28, f. 153, 154. sulcata, v. aculeata. Tahitensis, 7, f. 133, 134. thermatis, v. fluviatilis. Touranensis, v. crepidularia. transversalis, 27, f. 151, 152. trifasciata, v. fluviatilis. triserialis, 48, f. 195, 196. tristis, V. pupa. tritonensis, 49, f. 197, 198. 46 tritonensis, V. intermedia. turrita, 107, f. 91, 1138, 114. Turtoni, 106, f. 92, 93. undata, v. Smithii. vespertina, 6, f. 131, 132. violacea, v. crepidularia, Virginia, 89, f. 232-239. viridis, 85, f. 229, 300. viridis, v. Rangiana. Zebra, 105, f. 96, 97. Zebra, v. dubia. Zebra, V. sobrina. zebrina, Vv. fluviatilis. zebroides, v. dubia. Ziczac, 110, f. 105-107, 110. MONOGRAPH OF THE GENUS NAVICELLA. Fam. Neritacez. Char. Gen. Molluscum Trachelipodum fluviatile. Testa ellip- tica, superné convexa, epidermide cornea induta, apice prope mar- ginem posticum incurvo; subtts concava, labio interno septi- formi. Operculum solidum, planum, radiatum, unidentatum. A genus of Trachelipodous fluviatile mollusks, with the shell of an oval form, convex above, covered with a smooth epidermis, with the apex simple and placed at or near the posterior margin ; concave beneath, with a laminated, septiform inner hp. Oper- culum shelly, rather quadrate, flat, radiating, and with generally a sharp tooth-like process at the side. 1. NavICELLA PORCELLANA (pl. exvi. f. 1, 2. pl. exviii. dvs. f. 43,44). Patella porcellana, Linn. Syst. Nat. p. 1257. Nerita porcellana, Chemu. Conch. t. ix. p. 68. pl. 124. f. 1082. Patella Borbonica, Vincent. Septaria Borbonica, Mérussac. Crepidula Borbonica, De Roissy. Navicella Perousn (N. elliptica, Quoy et Gaimard), Reeluz. Navicella elliptica, Lamarck, Sowerby, Sc. N. testi ovali, valide convexa, sub epidermide varié nigro fas- ciata vel reticulata; apice recto, marginem paulultim superante ; labio interno subangustato, margine recto; operculo subquadrato, brevi. Of the typical oval form, variously marked with black under a transparent epidermis, very convex, with the apex nearly straight, and slightly going beyond the margin. ‘The septum is rather narrow, with the edge nearly straight, and the operculum is of a rather square form. The Bourbon Isles, the Mauritius, and Madagascar. 2. NavVICELLA MACROCEPHALA (pl. cxvu. f. 4, 5), Le Guillon, Rev. Zool. 1841, p. 374. N. testa subelongaté, depressi, sub epidermide nigro divarica- 4B 545 tim strigilata et reticulaté; apice decumbente, longé marginem posticum superante; labio interno latiusculo, margine arcuato ; operculo subelongato, dente elongato. More elongated than N. depressa, and having the apex pro- duced very much beyond the margin; the septum is rather broader and arched at the edge; the operculum is rather ionger. Lebouka, Feejee Islands. J. Larges. 3. Navicetza Luzonica (pl. exvi. f. 6,7), Recluz, Rev. Zool. 1841, p. 376. N. testé oblongé, validé convex’, iummaculati; apice decum- bente, longé marginem posticum superante; labio interno lato, margine recto. Oblong, and with a large apex as in WV. macrocephala, but much more convex and destitute of markings, and the septum nearly straight at the edge. Island of Luzon; Souleyet. On stones in rivers; Islands of Panay and Mindinao, Philippines; Cuming. 4, NAvVICELLA DEPRESSA (pl. cxvu. f. 8,9, 10), Lesson, Voy. de la Coquille, p. 868. Var. N. zebra, Lesson. N. test ovali, depressi, sub epidermide nigro divaricatim stri- gilaté; apice recto, marginem tegente; labio interno subangus- tato, margine recto ; operculo subquadrato, brevi. Although the convex side of this species is much less elevated than in XW. porcellana, and the apex less prominent, I have much hesitation m admitting the validity of the distmetion. New Guinea, New Holland, New Ireland; Quoy e¢ Gaimard. Tahiti; Cuming. 5. Navicetta JANELLI (pl. cxvu. f. 11, 12, 18), Recluz, Rev. Zool. 1841, p. 376. N. testa ovali, validé convexd, minuté concentrice striata, sub epidermide nigro lineata et reticulaté; apice oblongo, valido, marginem superante; labio interno lato, plerumque aurantio, in medio paululim arcuato; operculo magno, griseo, prope dentem angulariter emarginato. Differmg from JV. porcel/ana in having the apex more distinct, and decidedly curved upwards (holding the shell in a position ana- logous to that of a Nerita with the spire uppermost). ‘The septum is also broader than in NV. porcellana, and slightly arched in the 549 centre. The operculum is rather more oblong, and much more strongly lobed: it is generally of grey colour. The external surface is also very slightly striated in direction of the lines of growth. On stones in a deep river, Island of Luzon, Philippines. Cuming. 6. Navicenia aprata (pl. cxvii. f. 14, 15. pl. exviii. dis. f.39), Le Guillon, Rev. Zool. 1841, p. 376. N. test rotundato-subtrigond, depress’, exttis obscuré nigro reticulata, epidermide fuscd indutd; apice decumbente, marginem superante ; ints ceruled, nonnunquam maculis nigris magnis lateralibus duabus; septo subtrigono ; impressionibus musculari- bus rectiusculis. Much depressed and spread out at the sides, rather narrowed in front, so as to give a somewhat trigonal form to the shell. The septum is trigonal, and the muscular impressions straight and narrow. Island of Bourbon. 7. Navicetia Cumrinerana (pl. exvui. f. 16, 17, 18), Recluz, Zool. Pro. 1842, p. 157. N. testa ovali, convexd, sub epidermide concentricé nigro unda- tim fasciata; apice magno, marginem superante ; labio interno in medio producto; operculo subovali, ad terminum bilobato; im- pressionibus muscularibus latis. This species, with the form of N. porcellana, and the produced apex of NV. macrocephala and N. Luzonica, is remarkable for the shape of the septum, which is curved outwards in the centre, somewhat in the form of a uvula; the operculum is also peculiar, being rather oval, with two equal lobes at the end. Lebouka, Feejee Islands; MW. Furges. Islands of Mindinao and Caminguing, Philippines; on stones in a mountain stream ; Cuming. 8. Navicerta Freycinert (pl. exvii. f. 19, 20), Recluz, Rev. Zool. 1841, p. 375. N. testa ovali, convexd, sub epidermide angulatim lineata ; apice magno, marginem superante; labio interno in medio producto, uvuleeformi, quadrato ; impressionibus muscularibus latissimis. Resembling N. Suffreni, but having the septum still more strongly uvuleform and the produced part squared. The muscular 4B 550 impressions, which in V. Suffreai ave broad, are still more so in this species, leaving a very narrow ship of the inner surface of the shell between them. 9. NaviceLLa Lineata (pl. cxviii. f. 21, 22, 23, 24, 25), Lamarck, Anim. sans vert. Septaria Navicula, Férussac. N. testa elongata, epidermide tenuissima, nigro vel rubro longi- tudinaliter fasciat&é seu reticulata, seu seriatim maculaté ; apice angusto, plerumque roseo, marginem vix superante ; septo ‘latius- culo, trigono, margine arcuato; operculo elongato, ad terminum acute dentato, emar rginato. The most lengthened and narrow of all the species, with the apex narrow and protruding very slightly beyond the margin ; the septum trigonal, and the operculum elongated. The colours, either red or black, are for the most part arranged in longitudinal lines or bands, but, in some varieties, reticulated. Indian rivers; Lamarck. Var. f.25, Botanic Gardens, Cal- cutta. Many varieties, from the Islands of Luzon and Mindinao, Philippines ; Cuming. 10. NaviceLya TESSELLATA (pl. exviil. f. 26, 27, 28. pl. cxviil. bis. £. 48, 49), Lam., Anim. s. vert. N. Entrecastauxn, (f. 34.) fecluz, Rev. Zool. 1841, p. 380. N. test oblong’, epidermide tenuissimd, nigro vel rubro qua- dratim tessellata vel reticulata; apice vix marginem tegente ; septo latiusculo, subconvexo, margine arcuato ; operculo breviusculo. Rather broader and more square than N. dineata, with the apex scarcely touching the edge, and not so much narrowed. ‘The difference in the marking can scarcely be regarded as constant, although im this species there is a greater tendency to a tessel- lated form. Ceylon (var. f. 25); Ma. Middleton. On stones in rivers; Islands of Luzon and Mindinao, Philippmes ; Caumzng. 11. NavicELLA C&@RULESCENS (pl. cxvui. f. 29, pl. cxviil. dis. f. 36, 37, 38), Recluz, MS. N. testé breviuscula, subdepressa, subquadrata, caerulea, maculis nigris angulatis picti; margine apicem superante; septo angus- tissimo, rete Resembling J. tessed/ata, but with the septum extremely narrow and arched; the shell is also broader in proportion to its length. Ganges River, Bengal; collected on stones by Mr. Westerman. 551 12. Navicerna suporBrcuraris (pl. cxviii. f. 30, 31, var. ? pl. exvii. f. 3), Sowerby, sen., Tank. Cat., Appendix, No. 1092. N. test’ subrotundata, convexd, griseo rufescente reticulata ; apice rotundo, haud ad marginem extenso; apertura intus au- rantid; septo angustato; operculo subquadrato, acuté unidentato. Rather round in form, very convex, with a rounded apex not reaching the margin. The external surface is reticulated with reddish-grey lines; the inner part generally presents an orange tint under the septum; the septum is very narrow. Timor; Sowerby. On stones in rivulets, Island of Johanna, Commoros; ev. W. Hennah. 13. Navicetta Crypzotum (pl. cxvui. f. 32, 33, 34, 35), Recluz, MS. N. atra, N. radiata, N. Recluzii, Reeve, Conchologia Systematica. N. testa ovali, minutissimé striata, subdepressd, rubro nigroque varié tessellata et fasciaté ; apice parvo, margine apicem superante ; septo semicirculari, subconvexo, margine paululiim arcuato ; oper- culo subquadrato, acutissimé unidentato. In this species the apex does not reach the margin, and the external surface is very finely striated. The shell is rather depressed and variously tessellated, sometimes in longitudinal bands, with red and black. The septum is rounded at the posterior, and very slightly arcuated at the anterior margin, with a tendency to con- vexity. The operculum is very strongly toothed. On stones in rivers, in several of the Philippine Islands. Cuming. 14. NaviceLLA VARIABILIS (pl. cxvin. des. f. 40, 41, 42), Recluz, Pro. Zool. Soc. 1842, p. 155. N. testa N. Clypeoto simili, sed margine vix expanso, apice marginali, dorso magis tumido. like NV. Clypeolum, but with the margin less spread, the back higher, and the beak more curved, so as to reach the margin. Mindinao, Philippines. Cuming. 15. Navicetxa Cooxtt (pl. exvi. dis. £. 45-47), Recluz, MS. N. testa N. suborbiculari sumili, sed magis ovali, apice marginem tegente, labio latiusculo, aurantio. Like WV. suborbicularis, but more oval; the apex bent down so as to reach the margin; the septum a little broader, and of a bright orange-colour. One of the Commoro Islands (Johanna). Rev. W. Hennah. NAVICELLA. Rn LIST OF FIGURES IN PLATES CXVIE, CXVIII., and CXVIIL. dis. Fig. 1, 2. N. porcellana, Linneus, Sp. 1. 3. — suborbicularis, var. ? 4,5. — macrocephala, Le Guillon, 2. 6, 7. -— Luzonica, Recluz, 3. 8-10. — depressa, Lesson, 4. 11-13. — Janellii, Recluz, 5. 14, 15. 16-18. — Cumingiana, Reeluz, 7. 19, 20. — Freycineti, Recluz, 8. 21-25. — lineata, Lamarck, 9. 26-28. — tessellata, Lamarck, 10. 29. — ecerulescens, Recluz, 11. 30, 31. — suborbicularis, Sowerby, 12. 32-35. — Clypeolum, Recluz, 13. 36-38. — cerulescens, Recluz, 11. 39. — apiata, var., Le Guillon, 6. 40-42. — variabilis, Recluz, 14. 43, 44. — porcellana, Young, 1. 45-47. — Cooku, Recluz, 15. apiata, Le Gillon, 6. SPECIFIC SYNONYMA. elliptica, Zam., v. porcellana, Sp. 1. Borbonica, St. Vincent, v. porcellana, 1. Perousii, Recluz, v. porcellana, 1. zebra, Lesson, v. depressa, 4, f. 10. Entrecastauxii, Recluz, v. tessellata, 10, f. 48. atra, Reeve, v. Clypeolum, 13, f. 34. radiata, Reeve, v. Clypeolum, 13, f. 35. Recluzii, Reeve, v. Clypeolum, 138. SPECIES UNIDENTIFIED. Bougainvilli, Recluz, Rev. Zool. 1841, p. 374. D’Urvillei, Recluz, Rev. Zool. 1841, p. 378. Suffreni, Recluz, Rev. Zool. 1841, p. 374. 553 MONOGRAPH OF THE FAMILY BULLIDA. By ARTHUR ADAMS, R.N., F.LS. {Norsr. The following generic divisions of the Bulhdae, by Arthur Adams, Esq., as founded upon a careful examination of the animals and shells, are here given, although not in accordance with the general plan of our work, because researches so useful ought not to be lost for want of a vehicle for their publication. At the same time, it will be observed that in enumerating the species of shells, the usual form is adopted, and the proposed genera only mentioned as subgenera. Collectors will thus have the opportunity of choosing their own mode of arrangement. | Fam. BULLID. Head with tentacular lobes, often forming by their union a flattened cephalic disc. Gills on the right side of the back, covered by the mantle or by a shell. Foot more or less dilated at the sides into swimming lobes. Shell none, internal, or external. Operculum none. Genus 1. Butirna, Mérussac. Buiiinuta, Beck. (Bulla, sp. 1-3. pl. exx. f. 1-3.) Animal ignotum. Testa solida, ovata, umbilicata, transversé sulcata. Spira ele- vata. Labrum intis sulcatum. Labium sinuosum, anticé sub- truncatum. Animal unknown. Shell solid, ovate, umbilicated, transversely grooved. Spire elevated. Outer lip internally grooved. Inner lip sinuous, ante- norly subtruncated. 554 Genus 2. ApLustruM, Schumacher. (Animal, pl. exix. f. 1. Shells, Budla, sp. 4, 5. pl. exx. f. 4-7.) Animal ut m Hydatina. Testa globoso-ovalis ; spira depresso-plana. Apertura oblonga, postice haud coarctata, canali brevi subemarginato; labium externum acutum ; labium internum nullum. Columella prominens, invo- luta, tortilis, obliqué truncata, margine interno tenuissimo, sub- replicato. Umbilicus nullus. Animal as in Hydatina. Shell globosely oval; spire depressly flattened. Aperture ob- long, posteriorly slightly contracted, with a short subemarginate canal; outer lip sharp, inner lip wanting. Columella prominent, involute, twisted, obliquely truncated ; inner margin very thin, somewhat reflected. Umbilicus none. Genus 3. Hypatina, Schumacher. (Animal, pl. exix. f. 2. Shells, Bulla, sp. 7-10. pl. cxx. f. 8-18.) Caput appendicibus labialibus duabus bifidis; lobis tentacu- laribus duobus, acuminatis, auriculatis, posterioribus lanceolatis, sursum testam recurvatis; oculi minimi, nigri, ad basin internam eorum sessiles. Pallium interné tenue, membranaceum, externé crassum, carneum, triangulare, circa spiram convolutum. Pes magnus, tenuis, membranaceus, sursum testam recurvatus, anticé auriculatus, postice rotundatus. Testa ovali-globosa, valdé ventricosa; spira depressiuscula. Apertura ampla, posticé coarctata; labium externum tenue, acutum; labium internum tenuissimum, replicato-adnatum. Venter im- perforatus, inflatus. Head with two bifid labial appendages; tentacular lobes two, pointed, auriculate, posterior large, flattened, lanceolate, recurved over the shell; eyes small, black, and sessile at their inner bases. Mantle internally thin and membranous, externally thick, fleshy, triangular, curving round the spire. Foot large, thin, membra- nous, recurved over the shell, auriculate in front, rounded behind. Shell ovately globose, very ventricose; spire somewhat de- pressed. Aperture wide, posteriorly contracted ; outer lip thin, sharp; inner lip very thin, reflected over and adnate to the last whorl. Last whorl imperforate, inflated. Genus 4. Tornattna, Adams. (Animal, pl. cxix. f.3. Shell, Bulla, sp. 11-26. pl. exxi. f. 24-39.) Caput subtrigonale, latum, anticé rotundatum, lateribus pro- or on oat ductis im lobos triangulares depressos, oculis ad eorum basin externam. Pallium parte exteriore incrassata, tuberculis tribus instructé, parte interna tenui, subulati, in suturd spire disposita. Pes brevis, linearis, anticé truncatus. Testa cylindrica vel fusiformi; spira manifesta, apice papillato ; sutura canaliculata ; columella callosa, uniplicata. Head subtrigonal, broad, anteriorly rounded, the sides pro- duced into depressed triangular lobes, with the eyes at their outer base. Mantle with the outer part thickened and furnished with three tubercles ; inner part thin, subulate, concealed in the channel of the spire. Foot short, linear, anteriorly truncated. Shell cylindrical or fusiform, spire conspicuous, apex papillated, suture channelled, columella callous, with a single plait. Buttina, Blainv. Bullina, sp., Macgill. Tornatella, sp., Miener. Bullina, sp., Say. Tab. 1. Fig. 6, animal; fig. 7, shell. Genus 5. Urricutus, Brown. (Shells, sp. 27-31. pl. exx. f. 19-23.) Animal test4 reconditum, crassum, latum. Caput latum, breve, transversum; vibracula brevia, cornea, remota, lateralia; oculi postici, minuti, immersi, remoti; labia tumida buccam formant inflatam, verticalem, anticé impressam, medio os preebentem minu- tum. Solea testi brevior, subquadrata, antice dilatata, truncata, posticé fissuré media in lobos duos divisa. Margo pallu leviter mcrassatus, aperturam lambens. Testa bullacea, tenuis, ovata; apex truncatus; spira depressa. Animal contained within the shell, thick, wide. Head wide, short, transverse; tentacles short, conical, wide apart, lateral ; eyes posterior, minute, immersed, wide apart ; lips tumid, forming an inflated mouth, impressed anteriorly. Foot shorter than the shell, subquadrate, anteriorly dilated, truncated, divided pos- teriorly by a median fissure into two lobes. Margin of the mantle slightly thickened, adhering to the aperture. Shell small, oblong-ovate ; outer lip nearly the whole length of the last whorl, and entire; spire very short, volutions promient. Amphisphyra, Lovén. Diaphana, Brown. Genus 6. Axera, Willer. (Animal, pl. exix. f. 4. Shells, Bulla, sp. 32-37. pl. exxi. f. 40-46.) Animal.—Caput elongatum, anticé latum, bilobatum, posticé an- . . 7 . “4 ? . gustatum. Oculi null. Suturam spire depressee canaliculatum explet pallium, connatum, cirrum emittens longum, tenuem, fili- 4c 556 formem. Pes expansus, anticé angustatus, rotundatus, postice latus, truncatus, lateribus valdé dilatatis, natantibus. Testa subcylindrica, elastica, convoluta, ultimo anfractu in sutura aliis soluto ; spira distincta, anfractibus canaliculatis, vertice obtuso; apertura postice angustata, anticé effusa. Head elongated, wide and bifid anteriorly, narrow posteriorly. Hyes none. Mantle with a fimbriated edge projecting through the slit in the spire. Foot expanded, narrow and rounded anteriorly, posteriorly broad and truncated; the sides greatly dilated and forming swimming lobes. Shell cylindrical, elastic, convoluted, the last whorl separated in the suture from the others; spire distinct, whorls channelled ; apex obtuse; aperture narrow, posteriorly contracted, anteriorly effuse. Akera, Miller (not Cuvier). Hucampe, Leach. Vitrella, Swainson. Genus 7. ScapHanvEeR, Montfort. (Animal, pl. cxix. f. 5. Shells, Bulla, sp. 38-42. pl. exxi. f. 47-51.) Animal ut in Bulla. Testa ovalis; spira subocculta, truncata. Apertura amplissima, test longior ; anticé valde dilatata, integerrima ; posticé coarctata, excisa; labium externum acutum. Margo cochlez spiraliter ma- uifesté convolutus usque ad originem spire. Animal as in Bulla? Shell oval; spire somewhat concealed, truncated. Aperture very wide, longer than the shell, anteriorly greatly dilated, entire, posteriorly contracted and channelled; outer lip acute. Margin of the shell distinctly spirally convoluted as far as the commence- ment of the spire. Arrula, Schum. Charta, Martim. Bullea, Roissy. Genus 8. Butta, Adem. (Animal, pl. cxix. f. 6. Shells, Bulla, sp. 43-55. pl. exxii. and exxii. f. 59-80.) Corpus oblongum. Caput latum depressum, lobis _posticis duobus ; oculi sessiles in medio capitis. Pallii dextra pars carnosa, pedem longé superans; sinistra pars tenuis, adheerens. Pes brevis, subquadratus, lateribus anticé reflexis, anteriorem partem teste: vix tegentibus. Testa ovato-globosa, convoluta ; columella nulla; spira immersa, tubulosa; apertura longitudine teste, margine externé acuto. Body oblong. Head broad, depressed, with two posterior lobes. 557 Right part of the mantle fleshy, equalling in length the foot ; the left part thin, adhering. Foot short, subquadrate, the sides anteriorly reflected and covering a small part of the fore part of the shell. Shell ovately globose, convoluted; columella none; spire sunken and tubular; aperture the length of the shell, outer margin acute. Bullus, Mout. Vesica, Swain. Cymbiwm, Adanson. LRhizorus, Monttf. Genus 9. Haminpa, Leach. (Animal, pl. cxix. f.7. Shells, Bulla, sp. 56-78. pl. exxiv. f. 81-106.) Corpus oblongum. Caput latum, depressum, elongatum, pos- ticé bilobatum; oculi sessiles in medio capitis. Pallium parte extern (vel dextra) valdé dilataté, incrassata, truncati, postice ultra testam extensi. Pes brevis, subquadratus, alis duabus, magnis, natantibus, majorem partem conchze obvelantibus. Testa convoluta, cornea, tenuis, transversim striata, columella spiraque destituta. Body oblong. Head broad, depressed, elongated, posteriorly bilobed; eyes sessile on the middle of the head. Mantle with the nght or external part greatly dilated, thickened, truncated and extending beyond the shell. Foot short, subquadrate, with two large swimming lobes, which nearly cover the shell. Shell convolute, thin, horny, transversely grooved, destitute of columella or spire. Genus 10. Arys, Montfort. (Animal, pl. exix. f. 8. Shells, Bulla, sp. 79-100. pl. exxiv. and exxv. f. 107-131.) Caput subtrigonale, depressumn, posticé bilobatum ; oculi subcu- tanei, mm medio capitis. Pallium parte dextra incrassati, truncata, posticé ultra testam extensi. Pes brevis, subquadratus, lateribus reflexis, anticé dilatatis, supra anteriorem partem conchee dispositis. Testa alba, solida, transversé striata ; labrum posticé tortuosum, labium anticée plicatum vel subtruncatum. Head subtrigonal, depressed, posteriorly bilobed ; eyes sub- cutaneous, in the middle of the head. Mantle with the nght margin thickened, truncated, and prolonged posteriorly beyond the shell. Foot with the sides dilated in front, reflexed and folded over the fore part of the shell. Shell white, solid, colourless, transversely striated ; outer lip 4c 2 KKQ 508 posteriorly twisted, inner lip ending anteriorly in a fold, tooth, or truncature. Naucum, Schum. Alicula, Ehrenb. Rowania, Leach. Genus 11. Cyiicnna, Lovén. (Shells, Bulla, sp. 1V1-119. pl. exxv. f. 182-151.) Ammal breve, latum. Caput depressum, subquadratum, antice truncatum ; vibracula lata, deplanata, libera, recumbentia, trans- versa; oculi sub eorum basi immersi. Solea brevissima, ovato- quadrata. Pallium limbo incrassato, aperturam posticé claudente. Testa cylindrica; spira nulla, vertice umbilicato; columella callosa, uniplicata. Animal short, broad. Head depressed, subquadrate, anteriorly truncate ; tentacles wide, flattened, free, recumbent, transverse ; eyes immersed in their base. Foot very short, ovately quadrate. Mantle with the margin thickened posteriorly, closing the aperture. Shell cylindrical; spire none; apex umbilicated; columella callous, with a single plait. Bullina, Risso (not Férussac). Cylindrella, Swainson. — Vol- varia, Brown. Genus 12. Votvuna, Adams. (Shells, sp. 120-124. pl. exxv. f. 152-156.) Animal ignotum. Testa subcylindrica, utrinque rostrata; spira occulta; apertura angusta; labium obsoleté uniplicatum. Animal unknown. Shell subcylindrical, beaked at both ends; spire concealed ; aperture narrow ; inner lip with a single obsolete fold. This genus differs from Volvaria in the spire being entirely concealed, and having but a single fold on the fore part of the inner lip; and from Ovudwm and Hyalina in the outer lip not being thickened or reflected externally. Genus 13. Linrerta, Adams. (Animal, pl. exix.f. 9. Shells, Bulla, sp. 125-128. pl. exxi. f. 52-55.) Caput quadrilaterale, auriculis posterioribus nullis; oculi in media superficie superiore capitis. Pallium inclusum, posticé in limbo erasso productum. Pes lateribus liberis in alis duabus ex- pansis, postice conjunctis, testam circumflexis. Testa ovata, depressa; apertura superné subcanaliculata ; la- bium internum appendiculo calyciformi, intus spirali. 559 Head quadrilateral, without posterior auricles; eyes sessile on the middle of the upper surface of the head. Mantle included within the shell, ending posteriorly in a thickened lobe. Foot with the sides free, not connected to the head, enlarged in the form of wings, which unite behind, and cover a portion of the shell. The side-edges of the foot being free and unconnected with the head, the form of the cephalic buckler, and the cup-shaped lamina arising from the apex, and ending on the ccolumellar border of a depressed open shell, will distinguish this genus from the other groups of the family Budde. All the species already known are amphibious in their habits. Shell oval, depressed; aperture with a slight canal above ; inner lip with a cup-shaped appendage, spiral within. Genus 14. Cryproputnuatmus, Lhrenberg. (Animal, pl. cxix. f.10. Shells, Buda, sp. 129-181. pl. exxi. f. 56-58.) Corpus semicylindricum, forma Aplysiz tentaculis destitute. Caput depressum, carnosum, margimibus liberis; oculi minimi, sub capitis margine, laterales. Pallium concham basi tantim obtegit, maxima pars conch liber& partim spirali obtegitur. Pes alis duabus lateralibus, retlexis, in dorso complicatis, totum corpus involventibus, et postremo corporis fine aperturam bran- chialem formantibus. Testa fragilis, cornea, vix involuta, columella spirique desti- tuta; apertura ampla. Body semicylindrical, in form of an Aplysia without tentacles. Head depressed, fleshy, the margins free; eyes small, lateral, under the margin of the head. Mantle covering only the base of the shell. Foot with two lateral wings reflected and folded on the back, involving the whole body, and forming a branchial aperture at the hind part of the body. Shell fragile, horny, scarcely involute, destitute of columella and spire; aperture wide. Genus 15. Puaneroputuatmus, Adams. (Animal, pl. cxix. f.11. Shell, sp. 132. pl. exxv. f. 157, 158.) Corpus elongatum, rotundatum. Caput in medio sulcatum, lobis rotundatis ad latera instructum, appendicibus posteriori- bus brevissimis; oculi parvi, nigri, distantes, superficie capitis positi. Pes lateribus super dorsum circumflexis. Testa interna ovalis, tota aperta, nec convoluta, margine dextro prolongato, contorto, acuto. 560 Body elongated, rounded. Head grooved in the middle, with rounded lobes at the sides, posterior appendages very short; eyes on the upper surface of the head, small, black, and wide apart. Foot with the sides folded on the back, leaving between them an undulating fissure, a little sloping at the posterior part. Shell concealed in the interior of the back above the gills, oval, entirely open, without more trace of a spire than a curved process at the left border ; the right border prolonged into a point slightly turned on itself. M. Quoy observes that the Phanerophthalmus both creeps and swims, and that the shell, white, and concealed in the interior of the back, above the gills, approaches more to the Dolabel/as than to the Budias. 'The position of the eyes at once distinguishes it from Cryptophthalmus, with which it shows the greatest affinity. Genus 16. Sormetus, 4danson. (Animal and shell, pl. exix. f. 122) Caput non distinctum. Corpus carnosum, semicylindricum, lateribus valde sulcatis. Testa unguiformis, tenuis, pellucida, in parte posteriore disposita. Head not distinct. Body fleshy, semicylindrical, the sides deeply grooved. é Shell unguiform, thin, transparent, covering the hind part of the animal. Sormetus Adansonii, Blainv. Genus 17. Puiting, Ascanias. (Animal, pl. cxix. f. 13. Shell, sp. 133-139. pl. cxxv. f. 159-166.) Corpus ovato-elongatum, convexiusculum. Caput elongatum, tentaculis oculisque nullis. Pes lobis lateralibus, margine crassius- culis, vix sursum reflexis. Testa occulta, in pallio supra branchia inclusa, tenuissima, uno latere partim et spiraliter convoluta, columella spiraque destituta ; apertura amplissima, superné dilatato-patula. Body ovate-oblong, rather convex. Head elongated, without eyes or tentacles. Foot with the lateral lobes slightly thickened and reflected at the margin. Shell concealed in the mantle, thin, somewhat volute on one side, destitute of distinct spire or columella; aperture large and. wide. Phylina, Lamarck. Phyline, Gray. Lobaria, Miller. Budllea, Lamarck. = Mus. Cuming. 77. Butia rorunpata (pl. exxiv. f. 105), Adams. B. testa rotundato-ovali, tenui, cornea, subpellucidd, utrmque 584: rotundata, longitudinaliter striata, sub lente lineis transversis minutissimis ; labro eequaliter arcuato. Shell roundly ovate, thin, horny, semipellucid, rounded at both ends, longitudinally striated under the lens, with very fine trans- verse lines ; outer lip equally arched. Hab. —-—? Mus. Cuming. 78. Butta succtnea (pl. exxiv. f. 106), Conrad, Proc. Acad. Nat. Sc. Phil. 1846. Feb. pl. i. f. 5. B. testa cylindrica, pertenui, diaphand, succined, lineis confertis transversis cincti; columella concava, ad basin canaliculata ; labro recto, postice producto, Shell cylindrical, very thin, diaphanous, of an amber colour, marked with crowded minute revolving wrinkled lines ; columella concave or channelled towards the base; outer lip straight, the hind margin above the line of the apex. Tampa Bay. Mus. Metcalfe. 78 a. Buwta castanna (pl. exxiv. f. 106 a), Adams. B. testa solidi, oblongo-ovali; spiri umbilicata, albida, epider- mide fusco-ferrugined tecta, lineolis creberrimis transversis sub lente insculpta, leis anticis conspicuis, distantioribus, longitudi- naliter substriaté; labio anticé albo, incrassato ; apertura mtts albida. Shell solid, oblong, oval; spire umbilicated, whitish, covered with a brown ferruginous epidermis, engraved (under the lens) with very fine close-set lines, the anterior ones very distinct and wide apart, longitudinally substriated; inner lip anteriorly white and thickened ; aperture white within. Shores of New Zealand; 4 fathoms, mud. Sus-GENus Arys. 79. Butta navcum (pl. exxiv. f. 107-109), Linn., Gmel. p. 3424. B. testa rotundata, pellucida, utrinque subumbilicatd, undique transversim striata, alba. Shell rounded, pellucid, somewhat umbilicated at both ends, transversely striated throughout, white. Philippines, Borneo ; on muddy sand-banks. Cuming. 585 80. Butta rerrvuetnosa (pl. exxiv. f. 110), Chemn., Hist. Conch. i. t. 22. f. 209, 210. B. testa ovoided, tenui, fragil, leviter umbilicatd, utrinque transversim striata, maculis ferrugineis undulatis longitudinaliter ornata. Shell ovoid, thin, fragile, slightly umbilicated, transversely stri- ated at both ends, marked with undulated rust-coloured bands in a longitudinal direction. Hab. P Mus. Cuming. 81. Butta ovorpea (pl. exxiv. f. 111), Quoy e¢ Gaim., Voy. de PAstr. pl. 26. f. 17, 18. B. testa ovata, fragili, alba, leviter umbilicata, anticé transver- sim striata, striis tenuissimis, longitudinalibus. Shell ovate, fragile, white, slightly umbilicated, anteriorly trans- versely striated, and with very fine longitudinal striz. Ammal yellowish-green, with brown blotches, and one tongue- shaped marking on the head between the eyes. Island of Guam, Australia; J. B. Jukes, Esq. Mus. Cuming. 82. Butta sovipa (pl. cxxiv. f. 112, 113), Braug., Ene, Méth. vol. i. p. 874. B. testa oblongo-ovata, alba, solidd, epidermide subfusca tecta, utrinque valdé transverseé striata ; ultimo anfractu in medio obtusé carinato ; labro posticé tortuoso, producto, in medio subangulato ; labio anticé vix plicato. Shell ovately oblong, white, solid, covered with a light brown epidermis, strongly transversely grooved at each end, smooth in the middle, the last whorl obtusely carinated in the middle ; outer lip posteriorly twisted and produced, rather angled in the middle ; inner lip anteriorly with a slight fold. Philippines. Cuming. 83. Bunta cytinprica (pl. xxv. f. 114), Helblings, Chemn. x. t. 146. f. 1856, 1857. Bulla cylindrica, Brag. B. testa cylindricé, elongata, involuta, alba, in vertice umbili- A A ey = an = - ks A . "A A cata ; area antica et postica transversim striata, intermedia glabra ; apertura oblong’; columellé sinuosi; labio replicato. Shell cylindrical, elongated, involute, white ; apex umbilicated, 586 anteriorly and posteriorly striated, intermediate space smooth ; aperture oblong; columella sinuous ; inner lip reflected. Pasacao, Island of Luzon; sandy mud, low water. Cuming. 84. Butta Crancui (pl. cxxv. f. 115), Leach, MS. B. Utriculus, Brosch. B. intermedia, Aradas. B. testa ovata, subsolidioni, perforata, corneo-flavescente, striis transversis punctatis, subflexuosis ; vertice profundé wmbilicato ; labio anticé subtruncato. Shell ovate, rather solid, wmbilicated, yellowish horn-colour, with numerous transverse, rather wavy, punctated strie ; apex deeply umbilicated ; inner lip anteriorly somewhat truncated. Salcomb bay, Devon. Mus. Cuming. 85. Buta succisa (pl. cxxv. f. 116), Hhrenberg, Symb. Phys. B. testa oblongo-ovati, tenui, utrinque transverse striata, alba ; labro prope spiram inclusam uniplicato, altero fine truncato. Long 5 lin., lat. 3 lin. Shell ovately oblong, thin, transversely striated at both ends, white; outer lip near the spire with a single fold, the other end truncated. Length 5 lines, width 3 lines. Shores of the Red Sea. Mus. Cuming. 86. Buia tRuNcaATULA (pl. exxv. f. 117), Braug., Phil. En. Moll. Sicil. t. 7. f. 21. B. umbilicata, Montag. B. testa minuta, oblonga, subcylindrica, levissima, lacted ; ver- tice rotundato ; columella basi subtruncata. Shell small, oblong, subcylindrical, very smooth, white ; apex rounded ; columella somewhat truncated at the base. Sicily. Mus. Cuming. 87. Butta ovutata (pl. cxxv. f. 118), Broch., p. 277. t. 1. 1.5. B. testa parva, cylindrico-oblongd, hyalina, stris subtilissimis transversis (oculo nudo non conspicuis) exaratéi; apice obtuso, umbilicato ; columella inferné obsoleté uniplicata. Shell small, cylindrically oblong, hyaline, marked with very fine transverse strie (not visible to the naked eye); apex obtuse, umbilicated ; columella inferiorly with a single obsolete plait. Sicily. Mus. Cuming. 587 88. Butta niemais (pl, exxv. f. 119), Couthouy, Bost. Journ. Nat. Hist. vol. ii. p. 180. pl. 4. f. 5. B. testa perparva, hyalina, globosi, fragili, convoluti, longitu- dinaliter tenué striata ; spird null ; apertura superné angusti, ad basin valdé dilataté ; columellé subarcuata, reflexd, umbilicata. Shell very small, hyaline, globose, fragile, convoluted, longitu- dinally finely striated ; spire none; aperture narrow above, greatly dilated at the base ; columella somewhat arched, reflected, umbi- licated. Length 54, in., width 4, in. Massachusetts Bay, U.S. 89. Butta Tortuosa (pl. cxxv. f. 120), Adams. B. testd ovoided, utrinque valdé producti, flavescente, pellucida, perforata, anticé et posticé transversim striata; labro posticé valdé tortuoso ; labio recto, uniplicato. Shell ovoid, produced at both ends, yellowish, pellucid, umbili- cated, anteriorly and posteriorly transversely striated ; outer lip posteriorly strongly twisted ; inner lip anteriorly straight, with a single fold. Island of Camaguing, Philippines ; 30 fathoms, sandy mud. Mus. Cuming. 90. Butta Evoneata (pl. exxv. f. 121), Adams. B. testa subcylindricd, anticé angustiore, alb’, subpellucida, nitida, anticé et posticé transversim striaté, intermedia glabra ; labro posticé valdé tortuoso et producto ; labio anticé planiusculo, vix plicato. Shell subcylindrical, narrower anteriorly, white, subpellucid, shining, anteriorly and posteriorly transversely striated, the inter- mediate space polished ; outer lip posteriorly strongly twisted and produced ; inner lip anteriorly rather flattened, with a slight fold. Ceylon. Dr. Sibdold. Island of Zebu, Philippines. Cuming. 91. Buxxa spsciosa (pl. cxxv. f. 122), Adams. B. testa ovali, perforata, posticé angustatd, subtruncata, antice rotundaté, ventricosd, albé, semiopacd, nitidd, longitudinaliter superné valde striaté, inferné striis evanidis utrinque transverse striaté ; labro intts incrassato, posticé tortuoso, uniplicato ; labio reflexo, antice subplicato. Shell oval, perforated, posteriorly narrowed and subtruncated, anteriorly rounded and ventricose, white, semiopake, shining, longitudinally superiorly strongly striated, inferior striae evanes- iG 588 cent, transversely striated at both ends ; outer lip thickened with- in, posteriorly twisted, with a single plait ; inner lip reflexed, anteriorly semiplicated. Hab. > Mus. Metcalfe. 92. Butta monoponta (pl. exxv. f. 123), Adams. B. testé subcylindricd, posticé subtruncatd, anticé producti, solidi, opacd, longitudinaliter sulcaté ; labro in medio inflexo ; labio antice valde truncato, in plici dentiformi desinente. Shell subcylindrical, posteriorly subtruncated, anteriorly pro- duced, solid, opake, longitudinally grooved; outer lip inflexed in the middle; inner lip strongly truncated anteriorly, and ending in a dentiform plate. Shores of Borneo. Mus. Cuming. 93. Butta pentirera (pl. exxv. f. 124), Adams. B. testé ovoided, postice subtruncati, anticé producti, corned, pellucida, longitudinaliter sulcaté ; labro simplici, acuto ; labio anticé valdé truncato, in plicd dentiformi desinente. Shell ovoid, posteriorly subtruncated, anteriorly produced, horny, pellucid, longitudinally sulcated; outer lip simple, acute; inner lip anteriorly strongly truncated, ending in a dentiform plate. Lord Hood’s Island; found on Avicula margaritifera. Cuming. Mus. Cuming. 94. Butta nonscripta (pl. exxv. f. 125), Adams. B. test& ovato-cylindricé, alba, subpellucidd, longitudinaliter striatA, posticé subtruncatd, anticé producti ; labro subrecto ; labio anticé valdé truncato, in plicd dentiformi desinente. Shell ovately cylindrical, white, subpellucid, longitudinally striated, posteriorly subtruncated, anteriorly produced ; outer lip rather straight; inner lip anteriorly strongly truncated, ending in a tooth-like plait. 95. Burta Aricuna (pl. exxv. f. 126), Alicula cylindrica, Ehrenberg, Symb. Phys. t. 4. f. 6. B. test& semipollicari, subcylindricé, tenui, antico et postico fine transversé striata, hyalina; soled exustd, albi; labro medio non reflexo, superné uniplicato, altero fine rotundato. Animale flavicante ; scuto capitis et alarum margine leete viridibus ; capite rhomboide, subacuto. 589 Shell half an inch in length, subcylindrical, thin, the anterior and posterior ends transversely striated, hyaline ; the under part brownish white; outer lip not reflexed in the middle, with a single fold above, the other end rounded. Animal yellowish ; the head and dilated sides of the foot light green; head rhomboid, subacute. Near Suez and Djedda, Red Sea. Mus. Cuming. 96. Buxya nitrpa (pl. exxv. f. 127), Adams. B. testé perparva, obovaté, alba, opacd, nitidd, basi dilatata, vertice rotundato, profundé umbilicato, superné et inferné trans- versim striaté; apertura superné productd, angustd, inferné dila- tata ; columella simplici, reflex ; umbilico parvo ; labro superné rotundato, arcuato. Shell very small, obovate, white, opake, shining, dilated at the base, apex rounded and deeply umbilicated, transversely striated above and below ; aperture produced above and narrow, inferiorly dilated ; columella simple, reflected ; umbilicus small; outer lip rounded superiorly and arched. Shores of Borneo. Mus. Cuming. 97. Butta pyrirormis (pl. cxxv. f. 128), Adams. B. test& parva, obovataé, basi valdé dilatata, gibbosula, nitidé, levi, alba, pellucida, apice truncata, obsoleté longitudinaliter sul- cata, superne et inferné transversim striaté; spird non manifesta, vertice subumbilicato ; aperturd superné angusta, inferné valdé dilatata ; labio externo, superné acute truncato ; columella reflex, in medio subcaliosd ; umbilico profundo. Shell small, obovate, greatly dilated at the base, gibbose, shin- ing, white, smooth, pellucid, apex truncated, obsoletely longitudi- nally sulcated, above and below transversely striated ; spire not visible, apex slightly umbilicated ; aperture narrowed above, and greatly dilated below; outer lip acutely truncated above ; colu- mella reflected, rather callous in the middle ; umbilicus deep. China Sea. Mus. Cuming. 98. Butta Exieva (pl. exxv. f. 129), Adams. B. testi parva, elongato-ovali, posticé angustata, alba, nitidé, longitudinaliter substriata, sub lente minutissimeé striata ; apertura angusti, lineari, anticé dilataté; labro posticé producto, flexuoso ; labio subcalloso. 4G 2 590 Shell small, elongately oval, posteriorly narrowed, white, shin- ing, longitudinally substriated, under the lens very minutely stri- ated ; aperture narrow, linear, anteriorly dilated ; outer lip pos- teriorly produced, flexuous; inner lip subcallous. Port Lincoln. Mus. Metcalfe. 99. Buta parvuta (pl. exxv. f. 180), Adams. B. testa parva, ovali, alba, nitida, transversim tot striata, stris confertis ; labro arcuato, posticé producto, anticé dilatato ; labio vix tortuoso, subtruncato. Shell small, oval, white, shining, transversely entirely striated, strie close together ; outer lip arched, posteriorly produced, an- teriorly dilated ; inner lip slightly tortuous, subtruncated. Port Lincoln. Mus. Metcalfe. 100. Burts Horpeacea (pl. exxv. f. 181), Adams. B. testa parva, ovali, alba, nitidd, transversim valde tota striata, striis subdistantibus; labro arcuato, posticé producti, anticé ro- tundato; labio anticé valdé tortuoso, subtruncato. Shell small, oval, white, shining, transversely strongly entirely striated, strive rather wide apart; outer lip arched, posteriorly produced, anteriorly rounded ; inner lip anteriorly strongly twisted, subtruncated. Port Lincoln, Australia. Mus. Metcalfe. Sus-GENus CyLicHNna. 101. Buia cytinpracea (pl. exxv. f. 1382), Pennant, Zool. Brit. vol. iv. pl. 73. f. 5, 6. B. convoluta, Brocchi. LB. oliva, Gmelin. B. testé cylindricé, levi, alba; apertura lieari, basin versus partum dilataté; vertice obtuso, perforato ; striis transversis nullis (aut evanidis) ; columella callosd, uniplicata. Shell cylindrical, smooth, white ; aperture linear, slightly di- lated towards the base; apex obtuse, perforated ; transverse strize obsolete, or none; columella callous, with a single plait. British Islands. 102. Butta aracuis (pl. exxv. f. 133, 134), Quoy, Voy. de l Astrolabe. B. testa solida, longo-cylindrica, transversim tenuissime striata, 591 alba, epidermide cinnamomea tect4; spira perforata. Long. 8 lin., lat. 32 ln. Shell solid, elongately cylindrical, transversely finely striated, white, covered with a reddish-brown epidermis; spire perforated. Length 8 lines, width 32 lines. New Holland ; Port St. George. 103. Butta Sarstt (pl. exxv. f. 135), Phclippe. B. testa ovato-cylindraced, posticé truncata, anticé producti, apice perforata, alba, transversim tenuissimé striaté ; apertura angusté; columella anticé uniplicata ; labro postice producto. Shell ovately cylindrical, posteriorly truncate, anteriorly pro- duced, apex perforated, white, transversely very finely striated ; aperture narrow; columella anteriorly with a single fold; outer hp posteriorly produced. Hab. ? Mus. Hanley. 104. Butta occurta (pl. cxxv. f. 186), Mighels, Bost. Journ. Nat. Hist. vol. iv. p. 54. pl. iv. f. 11. B. testa parva, alba, ovato-cylindrica, striis minutissimis trans- versis et striis longitudinalibus incrementi tect; spird occulta ; labro supra elevato, medio recto ; aperturd subangusta, infra lata, rotundata. Shell small, white, ovately cylindrical, covered with very minute transverse strize and longitudinal lines of growth ; spire concealed ; outer lip elevated above, straight in the middle; aperture rather narrow, anteriorly broad androunded. Length $ in., width 3, in. New England. 105. Burza apa (pl. exxv. f. 137), Brown. B. testa ovato-cylindracea, alba, apice immerso, callo columel- lari obtecto, longitudinaliter substriata, transversim sub lente sub- tilissimé striata; apertura angusti; labro arcuato; labio anticé recto, uniplicato. Shell ovately cylindrical, white, apex sunken, covered by the columellar callus, longitudinally substriated ; aperture narrow; outer lip arched ; inner lip anteriorly straight, with a single, oblique, rather obsolete plait. Under the lens the shell is finely striated transversely. British Islands. Mus. Hanley. 592 106. Butta corticata (pl. exxv. f. 138), dMdller, Ind. Moll. Greenland. p. 79. B. testa cylmdrica, imperforata, solidiore, fulva, striis longitudi- nalibus undulatis minutissimis ornatd ; apice immerso, callo colu- mellari obtecto. Shell cylindrical, imperforate, rather solid, fulvous, with very minute longitudinal undulated lines ; apex sunken, covered by the umbilical callus. Greenland. Mus. Cuming. 107. Buxa rriticea (pl. exxv. f. 139), Courthouy, Bost. Journ. Nat. Hist. B. test& parvula, cylindricd, umbilico obtecto, solidiore, epider- mide subfuscd obtecté, transversim sub lente subtilissimé striata ; apice immerso, callo columellari obtecto ; apertura angusti, sub- lineari, ad basin dilatata. Shell small, cylindrical, umbilicus covered, rather solid, covered with a brownish epidermis under the lens, very finely transversely striated ; apex covered with the columellar callus; aperture nar- row, somewhat linear, dilated at the base. Massachusetts, U.S. Mus. Cuming. 108. Butta umsiticata (pl. exxv. f. 140), Montagu. B. testa ovato-cylindracea, albé, levi, longitudinaliter substriata, apice umbilicato, anticé subacuminaté; apertura angusta, anticé dilatataé ; labio anticé uniplicato. Shell ovately cylindrical, white, smooth, longitudinally sub- striated, apex umbilicated, shell anteriorly rather narrowed ; aper- ture narrow, anteriorly dilated; inner lip anteriorly with a single lait. : British Islands. Mus. Hanley. 109. Butta srricEta (pl. exxv. f. 141), Lovén, Ind. Moll. Scand. p. 10. B. testa cylindraced, posticé subtruncata, striis spiralibus tenuis- simis undulosis sculpté; apice umbilicato, minuto, tereti, pro- fundo, perforato, peromphalo solido, niveo ; labro partim recedente; columella callosi, plici distincta; aut nuda, nitidd, aut epider- mide fusca tecti. : Shell cylindrical, posteriorly somewhat rounded, engraved with very fine undulating transverse strie ; apex minutely teretely um- 593 bilicated, deeply perforated, peromphalus solid, white ; outer lip a little receding ; columella callous, fold distinct ; either nude and shining, or covered with a fuscous epidermis. Scandinavia. Cagayan; 25 fathoms, sandy mud, H.C. Mus. Cuming. 110. Butta conctnna (pl. exxv. f. 142), Adams. B. test& ovato-cylindraced, inferné subacuminata, albf, nitidd, opaci, transversim spiraliter minutissimé striata ; apice profundo, umbilicato; apertura lineari, infra partim dilataté; columella vix sinuosa, plici evanidi; labro producto, apicem desinente. Shell ovately cylmdrical, below somewhat acuminate, white, shining, opake, very minutely transversely spirally striated ; apex deeply umbilicated; aperture linear, a little dilated below ; colu- mella slightly sinuous, plait obsolete ; outer lip produced, extend- ing beyond the apex. Manila ; 3 fathoms, sandy mud. Cuming. 111. Butxa srericata (pl. cxxv. f. 143), Adams. B. testa cylindraced, gracili, posticé subrotundata, striis spirali- bus distantioribus sculpta ; apice profundé umbilicato ; apertura angusta, lineari, supra producta, infra dilataté; columella cal- losd, biplicata ; epidermide subfuscaé tenue tecta. Shell cylindrical, slender, posteriorly somewhat rounded, en- graved with rather distant spiral strie ; apex deeply umbilicated ; aperture narrow, linear, produced above, dilated below ; columella callous, with two plaits ; covered with a reddish-brown epidermis. China Sea. Mus. Cuming. 112. Butxa Brevissma (pl. exxv. f. 144), Adams. B. test& ovato-cylindricé, in medio partim obstricta, transversim spiraliter striata; apice umbilicato, umbilico callo columellari sub- obtecto; apertura angusta, lineari, in medio coarctata, superné product, inferné dilataté; columella reflex4, subcallosa. Shell ovately cylindrical, a little contracted in the middle, trans- versely spirally striated ; apex umbilicated, umbilicus partly covered by the columellar callus; aperture narrow, linear, con- tracted in the middle, above produced, below dilated ; columella reflexed, rather callous. China Sea. Mus. Cuming. 594 113. Butta MaRMorata (pl. exxv. f. 145), Adams. B. testa ovaté, supra coarctati, infra producti, subacuminata, levi, nitidd, pallidé rufo-fuscd albique variegata, maculis nunc in fasctis dispositis, transversim minutissimé striatd; striis dis- tinctioribus superné et inferné ; spird conspicud, in umbilico profundo; aperturaé angusta, infra et supra acuminaté producta ; columella recta, subcallosd, umbilico distincto. Shell ovate, contracted above, produced and rather acuminate below, smooth, shining, variegated with pale red-brown and white, the spots im some specimens disposed in distinct bands, trans- versely very minutely striated; striz most distinct above and below ; spire conspicuous, in the deep umbilicus of the apex ; aperture narrow, acuminately produced above and below; colu- mella straight, rather callous, umbilicus distinct. Island of Capul, Philippines. Cuming. 114. Buta concenrrica (pl. exxv. f. 146), Adams. B. testé parva, subcylindrica, elongata, basi vix dilatata, alba, longitudinaliter semisulcata, striis transversis valdé distinctis sculpta ; spird manifest4é, in apice immersa, peromphalo radiatim striato; apertura angusta, lineari, superné producta, inferné dila- tata; columella simplici. Shell small, subcylindrical, elongated, a little dilated at the base, white, longitudinally somewhat sulcated, engraved with very distinct transverse striz ; spire conspicuous, immersed in the apex, peromphalus radiately striated ; aperture narrow, linear, produced above, dilated below ; columella simple. Cagayan, Philippines. Mus. Cuming. 115. Butta pxcussata (pl. exxv. f. 147), Adams. B. testa parva, subcylindrica, elongata, basi vix dilatata, alba, striis transversis et longitudinalibus decussata ; spird manifesta, in umbilico immersi, peromphalo radiatim strato; apertura angusta, lineari, superné producta, inferné dilataté ; columella simplici. Shell small, subcylindrical, elongated, slightly dilated at the base, white, crossed with longitudinal and transverse striz ; spire conspicuous, immersed in the umbilicated apex, peromphalus radiately striated ; aperture narrow, linear, produced superiorly, dilated below ; columella simple. China Sea. Mus. Cuming. 116. Butra Bizona (pl. exxv. f. 148), Adams. B. test& ovato-cylindrici, fulva, fasctis duabus pallidé rubris cincti, longitudinaliter obsolete plicaté ; striis distinctis trans- versis creberrimis sculpt’; spiri manifesté, im umbilico profun- dissimo immers’ ; apertura superne producta, lineari, inferné dilataté ; columella semiplicati, subretlexd, umbilico obtecto ; labio externo supra inflexo. Shell ovately cylindrical, fulvous, encircled with two pale red- brown bands, longitudinally obsoletely plicated, engraved with distinct transverse finely undulated strive ; spire conspicuous, immersed in the deep umbilicus of the apex ; ; aperture produc ved above, linear, dilated inferiorly ; columella slightly plicated, rather reflected, umbilicus covered ; outer lip inflexed superiorly. China Sea. Mus. Cuming - 117. Butta pyramipata (pl. exxv. f. 149), Adams. B. testa subcylindricé, supra acuminata, basi vix dilatata, alba, nitida, longitudinaliter sulcatd, superné et inferné transversim sub- striata ; spird partim manifesté, vertice profundé umbilicato ; apertura anguste lineari, supra producti, infra dilatata ; columella reflex, subcallosd ; umbilico obtecto. Shell subcylindrical, acuminated above, hardly dilated at the base, white, shining, longitudinally g grooved, faintly striated trans- versely above and below; spire hardly obvious, apex deeply um- bilicated ; aperture narrowly linear, produced above, dilated below ; columella reflected, rather callous, umbilicus covered. China Sea. Mus. Cuming. 118. Burta pyemaa (pl. exxv. f. 150), Adams. B. testa parva, subcylindricd, in medio constrict, apice umbi- licataé, albi, nitidd, levi, longitudinaliter striaté; labro posticé producto, rotundato, in medio inflexo; labio anticé subcalloso ; apertura angusta, lineari, anticé dilatata. Shell small, subcylindrical, contracted in the middle, apex um- bilicated, white, shining, smooth, longitudinally striated ; outer lip posteriorly produced, rounded, inflexed in the middle; inner lip anteriorly subcallous ; aperture narrow, linear, anteriorly dilated. Port Lincoln. Mus. Metcalfe. 119. Butta mnvotura (pl. exxv. f. 151), Adams. B. test& cylindricd, posticé truncati, alba, solidé, transversim 4 4 tota striata; apertur’ angusti, lineari; labro recto, ejus angulo producto, rotundato ; labio anticé tortuoso, uniplicato. Shell cylindrical, posteriorly truncated, white, solid, transversely entirely striated ; aperture narrow, linear ; outer lip straight, its angle produced, rounded; inner lip anteriorly tortuous, with a single fold. China Seas. Mus. Cuming. Sus-cenus VoLvuLa. 120. Butta acuminata (pl. exxv. f. 152), Brug., Ene. Méth. vol. i. p. 376. Phdé., En. t. 7. f. 18. B. test& minuta, levissima, subcylindricd, utrmque rostrata ; spira occulta, superné parm attenuati; apertura anguste lineari, inferné perpartm latiore ; columella basi obsolete uniplicata. Shell minute, very smooth, subcylindrical, beaked at both ends ; spire concealed, above attenuated ; aperture narrowly linear, rather wider below ; columella with a single obsolete plait at the base. Shores of Sicily. dus. H. Adams. 121. Butta aneustata (pl. exxv. f. 153), Adams. B. test& cylindricé, utrinque rostrata, levi, nitidd, albi, longi- tudinaliter substriaté; spiri occult’; apertura lneari, in medio angustata, superné producti, inferné dilataté ; labro in medio coarctato ; labio uniplicato. Shell cylindrical, beaked at both ends, smooth, shining, white, - longitudinally substriated ; spire concealed; aperture linear, nar- rowed in the middle, produced above, dilated below; outer lip contracted in the middle ; inner lip with a single fold. Cagayan, Mindanao ; 25 fathoms. Cuming. 122. Buxta rostrata (pl. exxv. f. 154), Adams. B. testa elongato-ovah, alba, pellucida, utrinque rostrata, longi- tudinaliter substriata, transversim sub lente minutissimé striata ; aperturd angusta, lineari ; labro eequaliter arcuato ; columella tor- tuosi, uniplicata. Shell elongately oval, white, pellucid, beaked at both ends, longitudinally substriated, transversely (under the lens) very minutely striated; aperture narrow, linear; outer lip equally arched ; columella tortuous, with a single plait. Port Lincoln. Mus. Metcalfe. HOT 123. BuLia wpurnwa (pl. exxv. f. 155), Addams. B. test’ ovato-cylindracea, alba, levi, solidi, nitid&, inferné tansversim striati, utrinque rostraté; apertura sublineari, posticé angustati, anticé dilataté; labro posticé inflexo; labio calloso ; wumbilico nullo. Shell ovately cylindrical, white, smooth, solid, shining, inferiorly transversely striated, beaked at both ends; aperture narrow pos- teriorly, dilated anteriorly ; outer lip posteriorly inflexed ; inner hp callous; umbilicus none. China Sea. Mus. Cuming. 124, Buta strratua (pl. exx. f. 156), Adams. B. testa parva, ovato-cylindracea, alba, toté transversim striata, utrinque rostrata; spird occulti; apertura lineari, anticé sub- dilatata ; labro subrecto, vix inflexo in medio ; labio anticé valdé tortuoso, uniplicato. Shell small, ovately cylindrical, beaked at both ends, entirely transversely striated ; spire concealed; aperture linear, anteriorly slightly dilated; outer lip straight, shghtly inflexed in the middle ; inner lip strongly twisted, with a single plait. China Seas. Jus. Cuming. Sus-Genus Linrertia. 125. Buxta viripts (pl. exxi. f. 52), Rang, Quoy et Gaim., Voy. de lAstr. pl. xxvi. f. 18-16. B. calyculata, Brod. and Sowerby. B. testé ovali, aperté, vix involuté, longitrorsum tenuissimé striata, viridi; unguiculo albo ad spiram. Shell oval, open, scarcely involute, longitudinally very finely striated, green ; a white unguiculate appendage at the spire. Length 4 lines, width 3 lines. Animal of a sombre green, except the edge of the head and sides of the foot, which are greenish-yellow dotted with white. Bourbon, Guam, Japan, Pitcairn’s Island; on exposed rocks at half tide. Mus. Cuming. 126. Burta etauca (pl. exxi. f. 53), Quoy et Gaim., Voy. de l’Astr. pl. xxvi. f. 10-12. B. testa ovali, oblonga, pellucida, glauci, vix involuta, longi- trorsum striata, ad spiram unguiculata. 4H 2 598 | Shell oval, oblong, pellucid, glaucous, scarcely involute, longi- tudinally striated, unguiculate at the spire. Animal of a clear apple-green slightly dotted with black ; shell more involute, oval, and convex than 2. viridis. New Ireland. Mus. Cuming. 127. Butta minor (pl. exxi. f. 54), Adams. B. testa parvulé, pellucida, luted, tenui, levi, ovali, aperta, vix involuté, longitudinaliter tenuissimé striati ; unguiculo ad spiram. Shell small, pellucid, yellow, thin, smooth, oval, aperture very wide, scarcely involute, longitudinally very finely striated ; an unguiculate process at the spire. Island of Zebu ; on the sands. Cuming. 128. Butta Aeris (pl. exxi. f. 55), Hanley. B. testa subtrigonali, apertd, vix mvoluta, longitudinaliter sub- striata, alba’, fragili; labio appendiculo calyciformi, intts sub- spirali ; labro producto, postice angulato, producto. Shell subtrigonal, open, slightly involute, longitudinally sub- striated, white, fragile; inner lip with a cup-shaped appendage, subspiral within ; outer lip produced, posteriorly angled and produced. Algiers ; dredged by R. M‘Andrew, Esq. Mus. Hanley. SuB-GENUS CRYPTOPHTHALMUS. 129. Buxta ottvacea (pl. exxi. f. 56), Ehrenberg, Symb. Phys. t. 1. f. 2. B. smaragdina, Lenck., Rupp. B. corpore smaragdino, colore diluté viridi intermixto, tenta- culis indistinctis ; testa fragili, exigua, pellucida, alba, vix inflexa, columella spirique destituta. Body emerald green mixed with a pale green; tentacles indis- tinct. Shell fragile, small, pellucid, white, hardly inflexed, desti- tute of columella and spire. Sup-cenus Losicer. 130. Butta Puivreert (pl. exxi. f. 57), Avohn, Ann. des Scien. Nat. 3me Série. pl. ui. f. 1, 2. B. testi ovali, corned, fragili, longitudinaliter substriata, sub- involuta ; spird occulté ; apertura ampli, posticé producti, rotun- 599 data ; labro arcuato, ejus angulo superno producto, rotundato , labio tenui, subreflexo. Shell oval, horny, thin, fragile, longitudinally substriated, slightly involute ; spire concealed ; aperture very wide, posteriorly produced and rounded; outer lip arcuated, its upper angle pro- duced and rounded ; inner lip thin, somewhat reflexed. Hab. ? = Mus. Cuming. 131. Butta Cumtinett (pl. cxxi. f. 58), Adams. B. testA subovali, gibbosi, corned, fragih, pellucida, subinvo- luta; spird occulta ; apertura postice producti, angustata, lineari, anticé valdé dilataté ; labro subsinuoso, valdé inflexo, posticé producto; labio adhzrente, subreflexo. Shell subovate, gibbose, horny, fragile, pellucid, slightly invo- lute ; spire concealed ; aperture posteriorly produced, narrow and linear, anteriorly greatly dilated ; outer lip shghtly sinuous, greatly inflected towards the body-whorl, posteriorly produced ; inver lip adhering, slightly reflexed. Puerto St. Elena, W. Columbia; sandy mud, 6 fathoms. Cuming. SuB-GENUS PHANEROPHTHALMUS. 132. Butxa turea (pl. exxv. f. 157, 158), Quoy, Voy. de PAstr. pl. xxvi. f. 43, 44. B. animale pallidé luteo; test& minima, fragilil, alba, ovali, aperta, uec volvaté, margine dextro contorto et acuto ; long. 3 lin., lat. 2 lin. Animal of a pale yellow. Shell small, fragile, white, oval, open, not convolute ; right margin contorted and acute. Length 3 lines, breadth 2 lines. New Guinea: Port Dorey; on the reefs. Quoy. Sus-Genus PHILINE. 133. Butta Quapripartira (pl. exxv. f. 159). Philine quadripartita. Ascanius, Chemn. p. 146. f. 1354. Labaria quad- riloba, Miller. B. testa ovato-rotundaté, posticé line’ impressionali cincté ; margine externo semicirculari, postice sinuato, angulo ejus supero producto, rotundato. Shell rotundately ovate, encircled posteriorly with an impressed 600 line; outer margin semicircular, posteriorly sinuated, the upper angle produced and rounded. The plates of the gizzard are in the form of a cocked hat, or subtriangular, with the beaks bent down and slightly produced. British Islands. Mus. Cuming. 134. Butta Scurarerr (pl. cxxv. f. 160), PAcl., Enc. Moll. Sicil. pl. xx. f. 2. B. aperta, Mont., Lamarck. B. testa subquadrato-rotund’; margine externo semicirculari, angulo ejus supero producto, acutangulo. Shell subquadrately rounded ; outer margin semicircular, its upper angle produced, acutangular. The plates of the gizzard are oval, with the lateral beaks but slightly produced. Catanuan, Luzon, H.C. Mus. Cuming. 135. Buta puncrata (pl. exxv. f. 161). Bullea punctata, Adams, Trans. Linn. Soc. pl. 1. f. 6-8. B. testa ovato-oblonga, tenuissima, albi, pellucida, nitida, lineis transversis punctatis, latere columnari arcuato, apice obtuso, vix umbilicato. Long. 3; poll., lat. minus quam ;!, poll. Shell oblong, very thin, white, pellucid, glossy, marked with transverse dotted lines ; inner margin arcuated ; apex obtuse, with a very shallow umbilicus. Length #; inch, breadth less than jis inch. ** Animal cinereous, approaching to black, posteriorly yellowish- white ; gizzard membranaceous. Great Britam. 136. Buta prutnosa (pl. exxv. f. 162). Bullea pruinosa, Clark, Zool. Journ. 1827-28. p. 339. B. test& subglobos, nived, subopaci, subtiliter reticulata, peri- pherid paululim constricta; margine columnari arcuato, reflexo, ad mediam partem subemarginato, leviter umbilicato. Shell subglobose, subopake, of a dead frosted white colour, delicately reticulated, appearmg covered with fine gauze, circum- ference of the posterior or upper part somewhat constricted ; columellar margin arcuated, a little reflected, and in the middle a flexure or notch ; apex rather rounded and slightly umbilicated. Animal entirely white, foot very large. Great Britain. Mus. H. Adams. 601 137. Butia catena (pl. exxv. f. 163). Bulleea catena, Montag., Test. Brit. pl. vi. f. 7. B. catenulifera, Maegill. B. scabra, Mild. B. granulosa, Sars. B. zonata. B. testi oblonga, tenuissimé, albidé, nitidd, stris transversis catenatis notata ; latere columellari arcuato ; apice subobtuso, vix umbilicato. Shell ovate, oblong, very thin, white, pellucid, shining, marked with chain-like strie ; columellar margin arcuated; apex rather obtuse, slightly umbilicated. Animal on the upper part yellowish-white ; head and lobes of the foot sprinkled with minute red-brown points ; gizzard with testaceous appendages. British Islands. Mus. Cuming. 138. Buta scurutum (pl. exxv. f. 164). Philine scutulum, Lovén, Ind. Moll. Scand. p. 9. B. testa quadrato-ovali, anticé subtruncati, alb’, subpellucida, fasciis binis, incrassatis, striis excavato-punctatis, alternis sepé tenuioribus, sculpté ; margine integro ; apice minuto, rimato, vix umbilicato, rotundato ; labro posticé parti producto, dein leviter impresso, subrecto ; margine columellari sinuato-arcuato ; apertura patentissima. Shell quadrately oval, anteriorly subtruncated, white, subpellucid, engraved with two thickened bands, with excavately punctate striae, the alternate often the finest ; margin entire; apex minute, rimate, scarcely umbilicated, rounded ; outer lip posteriorly a little produced, then slightly impressed and rather straight ; columellar margin sinuately arched; aperture very wide. Greenland. Mus. Cuming. 139. Butta Coreantca (pl. exxv. f. 166), Adams. B. testd subquadrato-ovali; margine externo subrecto, angulo ejus supero truncato ; spird elevatiusculd. Shell subquadrately oval ; outer margin rather straight, its upper angle truncated; spire rather elevated. Korean Archipelago; mud flats. 4. Adams. SuB-GENUS CHELIDONURA. 140. Butta nrrunpinina (pl. exxv. f. 167,168), Quoy, Voy. de l’Astr. pl. xxvi. f. 20-25. B. test cyanea, vertice capitis dorsique, medio filamentorum 602 posteriorum, et margine pallii lime’ cyaneo-viridi ornatis ; testd minima, fragil, tot® aperta, albi, margine dextro plano, alato, pos- ticé acuto ; long. 1 poll. Mauritius. Note.—Since writing the above Monograph, I have examined the figures and de- scriptions of two remarkable genera described by M. Krohn, in the Ann. des Sci. Nat., which appear to me links connecting the Budide with the Aplysiade, and which may be thus characterized :— Lopicer, Krohn (Tab. ecxix. Fig. 18). Head with two auriform tentacles ; eyes sessile on each side of the head. Foot with the natatory appendages in the form of dilated rounded lobes, two on each side. Body produced posteriorly into a long pointed tail covered with papilla. Shell covered with an epidermis, thin, transparent; spire rudimentary, in the form of a protuberance directed towards the left. Z. Philippi, Ann. des Sciences Nat. 3me Série, pl. xi. f. 1, 2. Lopnocercus, Krohn (Tab. cxix. Fig. 19). Head with two auriform tentacles; eyes sessile on the sides of the head. Foot with the natatory appendages undivided, reflexed, and partly covering the shell in front, and united posteriorly. Body covered with papilla, and produced behind into a long pointed tail. Shell involute, thin, ovate, covered with an epidermis; the outer lip separated from the last whorl, its hind angle inflexed, produced, and rounded. L. Steboldiz, Krohn, Ann. des Sciences Nat. 8me Série, Zoologie, tom. vii. pl. ii. fig. 5-8. A. A. nee SPECIES UNIDENTIFIED. B. (Utriculus) globosus, Lovéu, Ind. Moll. Scandinavie, p. 11. B. (Scaphander) librarius, Zovén, Ind. Moll. Scandinaviwe, p. 10. B. (Cylichna) nitidula, Lovén, Ind. Moll. Scandinavie, p. 10. B. (Cylichna) pulvisuleus, Hhirenberg, Symb. Phys. B. (Cylichna) Bacillus, Hhrenberg, Symb. Phys. B. (Cylichna) diaphana, dr. e¢ Magy., Catalog. rag. p. 40. Phil. Enum. Moll. Sicil. vol. i. p. 215. B. (Cylichna) mica, Lhrenberg, Symb. Phys. B. (Atys) albicita, Dufo, Aun, Sc. Nat. t. 14. p. 203. Vig. 605 BULLA. LIST OF FIGURES IN PLATES CXIX. to CXXV. (The Figure after each name ts the number of the Species.) Pirate CXIX. ANIMALS OF SUB-GENERA. 1. Aplustrum (Shells, sp. 4-6, f, 4-8). 2. Hydatina (Shells, sp. 7-10, f. 9-18). 3. Tornatina (Shells, sp. 11-26, f. 24-39). 4. Akera (Shells, sp. 32-37, f. 40-46). . Scaphander. Bulla. . Haminea. . Atys. 9. Linteria. cont Go ou 10. Cryptophthalmus. 11. Phanerophthalmus. 12. Sormetus. 13. Philine. 16. Chelidonura. 14, 15,17. omitted, to make room for the following, subsequently met with. 18. Lobiger Philippii. 1 9. Lophocercus Sieboldii. Puate CXX. SHELLS OF SUB-GENUS Budlina. 1. B. scabra, 1. 2. — lineata, 2. 3. — Bruguieri, 3. 33 34. SUB-GENUS Aplustrum. Tig. 4-6. B. Thalassiarchi, 4. 7. — Gouldii, 5. 8. — debilis, 6. SUB-GENUS LHydatina. 9-11. B. physis, 7. 12-14. — vexillum, 8. 15, 16. — nitidula, 9. 17, 18. — albocincta, 10. SUB-GENUS Utriculus. 19. B. pertenuis, 27. 20. — obtusa, 28. 21. — pellucida, 29. 22. — Cecillii, 30. 23. — Borneensis, 31. Prate CXXI. SUB-GENUS Tornatina. 24. B. voluta, 11. 25. — canaliculata, 12. 26. — mammillata, 13. 27. — truncata, 14. 28. — turrita, 15. 29. — obstricta, 16. 30. — pusilla, 17. 31. — coarctata, 18. 32. — planospira, 19. . — biplex, 20. — olivula, 21. Kg. | Fig. 35. B. cinctella, 22. | 70. B. media, 47. 36. — gracilis, 23. 71. — Quoyii, 48. 37. — fusiformis, 24. 72, 73. — occidentalis, 49. 38. — simplex, 25. 74. — oblonga, 50. 39. — polita, 26. 75. — cruentata, 51. 76. — rufolabris, 52. 77. — punctulata,* 53. . — aspersa, 54. 79, 80. — nebulosa, 55. SUB-GENUS Akera. 40. B. soluta, 32. 41. — bullata, 33. 43. — subangulata, 34. ~_ co 44, — bicincta, 35. | PuatTe CXXIV. 45. — tenuis, 36. SUB-GENUS Haminea. 46, — Hanleyi, 37. | 81, 82. B. hydatis, 56. | . SUB-GENUS Scaphander. | 83. — Veen? 57. 47. B. lignaria, 38. Ji insculpta, 58. 48. — vestita, 39. | 85. — Oryza, 59. 49. — lineolata, 4.0. | 86. — Natalensis, 60. 50. — puncto-striata, 41. 87-89. — Guildingui, 61. 90. — cymbalum, 62. 51. — pectinata, 42. : 91. — pemphis, 63. SUB-GENUS Linteria. 92. — elegans, 64. 52. B. viridis, 125. 93. — brevis, 65. 53. — glauca, 126. 94, — fusca, 66. 54. — minor, 127. 95. — constricta, 67. 55. — Algire, 128. | 96. — glabra, 68. sUB-GENUS Cryptophthalmus. | 97. — ambigua, 69. 56. B. olivacea, 129. | 98. — Sinensis, 70. 99, — flavescens, 71. suB-GENUS Lodiger. monet 100. — curta, 72. 57. — Philippi, 130. ars 101. — papyrus, 73. BU | 102. — vitreea, 74. Prate CXXII. | 103. — tenera, 75. suB-cENuS Bulla. 104. — tenella, 76. »9-62. B. ampulla, 43. | 105. — rotundata, 77. 63. — amygdalus, 44. | 106. — succinea, 78. 64-66. —— australis, 45. _ 106 a. — eastanca, 78 a. Piate CXXIII. | SUB-GENUS A/ys. 69. B. Adansonu, 46. | 107-9. B. naucum, 79. * Printed in the text “ punetata,” by error. 605 Vig. | Fig. - 110. B. ferruginosa, 80. | 141. B. strigilla, 109 111. — ovoidea, 81. 142, -- concinna, 110 112, 113. — solida, 82. 143. — biplicata, 111. PrAage COCKY, 144. —— brevissima, 112. 145. — marmorata, 113. 146. — concentrica, 114. 147. — decussata, 115. 114. — cylindrica, 83. 115. — Cranchii, 84. 116. -— succisa, 85. 117. —- truncatula, 86. os ye ae 149. — pyramidata, 117. 118. — ovulata, 87. 150) = premeeeals see pea ay fey Seaneoinise tia: 120. — tortuosa, 89. . air 121. — elongata, 90. SUB-GENUS Volvula. 122. — speciosa, 91. 152. — acuminata, 120. 123. — monodonta, 92. 153. -- angustata, 121. 124. — dentifera, 93. 154. — rostrata, 122. 125. — nonscripta, 94. 155. — eburnea, 1238. 126. — alicula, 95. 156. — striatula, 124. 127. — nitida, 96. pee SUB-GENUS Phanerophthalmus. 128. — pyriformis, 97. 129. — exigua, 98. 157, 158. B. lutea, 132. 130. — parvula, 99. SUB-GENUS Philine. 131. — hordacea, 100. 159. B. quadripartita, 133. SUB-GENUS Cylichna. 160. — Schreteri, 134. 132. B. cylindracea, 101. as ND Loy 133, 134. — arachis, 102. Ey aes 135. — Sarsii, 103. remain tases 136. — occulta, 104. sii ae cieoie Saus Tey emesis 166. — Coreanica, 139. 138. — corticata, 106. SUB-GENUS Chelidonura. 139. — triticea, 107. | 167, 168. — hirundanina, 140. 140. — umbilicata, 108. | 169. — (Akera) tumida, 37 a. 606 ALPHABETICAL INDEX. acuminata, Brag., sp. 120, f. 152. Akera, v. bullata, 33. alba, Brown, 105, f. 137. albicita, not identified. albocincta, Hoeven, 10, f. 17, 18. Algiree, Adams, 128, f. 55. alicula, Ehrenberg, 95, f. 126. Adansonii, Philippi, 46, f. 69. ambigua, Adams, 69, f. 97. amplustre, v. vexillum, 8. amplustre, v. Thalassiarchi, 4. ampulla, Zinn., 43, f. 59-62. amygdalus, Lister, 44, f. 63. aperta, v. Schreeteri, 134. arachis, Quoy, 102, f. 134. aspersa, Adams, 54, f. 78. angustata, ddams, 121, f. 153. angustata, Vv. pectinata, 42. australis, Quoy, 45, f. 64-66. bacillus, not. identified. bicineta, Quoy, 35, f. 44. biplex, Adams, 20, f. 33. biphicata, Adams, 111, f. 143. bizonia, Adams, 116, f. 148. Borneensis, 4dams, 31, f. 23. brevissima, Adams, 112, f. 144. brevis, Quoy, 65, f. 93. Bruguieri, 4dams, 3, f. 3. bullata, Miller, 33, f. 41. calyculata, v. viridis, 125. canaliculata, Say, 12, f. 25. castanea, Adams, 78 a, f. 106 a. catena, Montagu, 137, f. 163. catenatus, v. pectinata, 42. catenulifera, v. catena, 137. Cecillii, Philippi, 30, f. 22. Ceylanica, v. soluta, 30. cinctella, Adams, 22, f. 35. coarctata, Adams, 18, f. 31. concinna, Adams, 110, f. 142. concentrica, Adams, 114, f. 146 constricta, 4dams, 67, f. 95. convoluta, v. cylindracea, 101. Coreanica, Adams, 139, f. 166. cornea, Vv. hydatis, 56. corticata, A/é/ler, 106, f. 138. Cranchii, Leach, 84, f. 115. cruentata, ddams, 51, f.'75. Cumingil, Adams, 131, f. 58. curta, Adams, 72, f. 100. eylindracea, Pennant, 101, f. 132. cylindrica, Hellings, 83, f. 114. cylindrica, v. alicula, 95. cymbalum, Quoy, 62, f. 90. debilis, Gould, 6, f. 8. decussata, Adams, 115, f. 147. denticulata, v. pectinata, 42. dentifera, Adams, 93, f. 124. diaphana, not identified. eburnea, Adams, 123, f. 155. elegans, Gray, 64, f. 92. elongata, Adams, 90, f. 121. exigua, ddams, 98, f. 129. Jasciata, v. vexillum, 8. JSasciatum, v. Thalassiarchi, 4. ferruginosa, Chemn., 80, f. 110. Ferussacii, v. nitidula, 9. jilosa, v. physis, 7. flavescens, Adams, 7, f. 99. flexilis, v. soluta, 30. Jragilis, v. bullata, 31. fusca, Adams, 66, f. 94. fusiformis, Adams, 24, f. 37. glabra, Adams, 68, f. 96. glauca, Quoy, 126, f. 53. globosus, not identified. Gouldii, Cowrthouy, 5, f. 7. gracilis, Adams, 23, f. 36. granulosa, v. catena, 137. Guildingii, Swains., 61, f. 87-89. Hanleyi, Addams, 37, f. 46. hiemalis, Cowrthouy, 88, f.119. hirundanina, Quoy, 140, f. 167, 168. hordacea, Adams, 100, f. 131. hyalina, Vv. hydatis, 56. hydatis, Linn., 56, f. 81, 82. insculpta, Totten, 58, f. 84. intermedia, v. Cranchii, 84. involuta, Adams, 119, f. 151. librarius, not identified. lignaria, Linn., 38, f. 47. lineata, Wood, 2, f. 2. lineolata, Courthouy, 40, f. 49. lutea, Quoy, 132, f. 157, 158. mammillata, Philippi, 13, f. 26. marmorata, 4dams, 113, f. 145. media, Philippi, 47, f. 70. mica, not identified. minor, Adams, 127, f. 54. monodonta, Adams, 92, f. 123. multistriata, v. amygdalus, 44. Natalensis, Avaus, 60, f. 86. naucum, Linn., 79, f. 107-109. navicula, v. hydatis, 56. nebulosa, Gould, 55, f. 79, 80. nitida, ddams, 96, f. 127. nitidula, not identified. nitidula, Lister, 9, f. 15,16. nonscripta, Adams, 94, f. 125. Norvegica, v. bullata, 33. oblonga, Adams, 50, f. 74. obstructa, Gould, 16, f. 29. obtusa, Turton, 28, f. 20. occidentalis, Adams, 49, f. 72, 73. oceulta, Mighels, 104, f. 136. oliva, v. cylindracea, 101. 607 | olivacea, Hhrenberg, 129, f. 56. olivula, ddams, 21, f. 34. oryza, Totten, 59, f. 85. ovoidea, Quoy, 81, f. 111. ovulata, Broch., 87, f. 118. papyrus, ddams, 73, f. 101. parvula, ddams, 99, f. 130. pectinata, Miller, 42, f. 51. pellucida, Brown, 29, f. 21. pellucida, v. hyalina, 29. pemphis, Philippi, 63, f. 91. perforata, v. elegans, 64, pertenuis, Mighels, 27, f.19. Philippi, Avohn, 130, f. 137. physis, Linn., 7, f. 9-11. planospira, Adams, 19, f. 32. polita, Adams, 26, f. 39. pruinosa, Clark, 136, f. 162. pulchella, v. 'Thalassiarchi, 4. pulvisulcus, not identified. punctulata,* Adams, 53, f.77. punctata, ddams, 135, f.161. puncto-striata, Mighels, 41, f. 50. pusilla, Pfeifer, 17, f. 30. pygmea, Addams, 118, f. 150. pyramidata, Adams, 117, f. 149. pyriformis, Adams, 97, f. 128. quadripartita, Ascanius, 133, f. 159. quadriloba, v. quadripartita, 133. Quoyii, Gray, 48, f. 71. resiliens, V. soluta, 30. rostrata, ddams, 122, f. 154. rotundata, Adams, 77, f.105. rufolabris, 4dams, 52, f. 76. Sarsii, Philippi, 103, f. 135. scabra, Vv. catena, 137. scabra, Chemn., 1, f. 1. Schreeteri, Philippi, 134, f. 160. scutulum, Lovén, 138, f. 164. semisulcata, v. truncata, 14. * Printed in the text “ punctata,” by error. simplex, Adams, 25, f. 38. Sinensis, 4dams, 70, f. 98. smaragdina, v. olivacea, 129. solida, Brug., 82, f. 112, 118. soluta parva, v. bullata, 31. soluta, Chemn., 32, f. 40. speciosa, Adams, 91, f. 122. striatula, 4dams, 124, f. 156. striata, v. media, 47. striata, v. Adansonii, 46. strigella, Lovéw, 109, f. 141. subangulata, Moller, 34, f. 43. succinea, Conrad, 78, f. 106. succisa, Hhrenberg, 85, f. 116. tenella, 4dams, 16, f. 104. tenera, Adams, 75, f. 103. tenuis, Adams, 36, f. 45. Thalassiarchi, Martini, 4, f. 4-6. 608 tortuosa, Adams, 89, f. 120. triticea, Courthouy, 107, f. 139. truncatula, Brug., 86, f. 117. tumida, 4dams, 37 a, f. 169. turrita, Moll., 15, £. 28. truncata, 4dams, 14, f. 27. umbilicata, Montagu, 108, f. 140. umbilicata, v. truncatula, 86. undata, v. lineata, 2. utriculus, v. Cranchii, 84. velum, Vv. vexillum, 8. vestita, Philippi, 39, f. 48. vexillum, Chemn., 8, f. 12-14. virescens, Sowerby, 57, f. 83. viridis, Rang, 125, f. 52. vitreea, ddams, 74, f. 102. voluta, Quoy, 11, f. 24. conata, v. catena, 137. MONOGRAPH OF THE GENUS MEROE. Fam. Veneride. Char. Gen. Testa equivalva, ineequilatera, subovali-cuneiformis, levis, solida, epidermide tenui induta, posticé subangulata, anticé rotundata; margine ventrali interné denticulato; ligamento in aream enon inserto; lunuldi anticd distinctA, ane gati, im- pressi; cardine dentibus tribus cardinalibus et uno “elongato laterali antico in utraque valvi; impressionibus muscularibus duabus lateralibus ; impressione pallii sinu rotundato. The deep excavation of the hinder part of the dorsal edge, in which the ligament is placed, and the obtuse wedge-like form, seems to separate this genus quite naturally from Cytherea. 1. Meroz pica (pl. exxvi. f. 1, 2), Schum. Venus Meroe, linneus. Donax Meroe, Lamarck. M. test&é omnino planulatim costata, antice elongata, postice angulo subacuto; colore intts violaceo, extus purpureo, vel lineis acutangularibus purpureis ornato. Flatly ribbed all over, the hinder side the shorter ; angle of the outline rather acute; the ventral edge not particularly bulged ; variable in colour, generally with broad purple angular lines on a pale ground. Philippines. J/. Cuming. 2. Meroz Ervossa (pl. exxvi. f.11, 12). Hanley, Pro. Zool. Soc. 1832; Recent Shells, p. 199; Wood’s Supplement, pl. 15. f. 18. M. testé omnino costis elevatis rotundatis cincti, anticé brevius- cula, rotundatim angustata, posticé angulo obtuso ; colore pallido, lineis fuscis angulatim scripto, intus albido, versus apicem roseo tincto. In this species the ribs are rounded and elevated, the anterior 4K 610 side is rather the shorter, the angle of the posterior side is obtuse. Colour pale brownish, with brown angular markings: it also occurs white. Pasacao Bay, Philippmes. Cuming. 3. Mrroz spminupa (pl. exxvi. f. 15), Phidippi, Abbild. Cyth. t. ix. f. 8. An var. C. Birmanica, Anton? M. testa ad umbones et posticé costis subplanulatis cincta, subtumida, subeequilatera, postice subrotundaté ; margine ventrali rotundo; colore pallidissimé fulvo, maculis angularibus fuscis picto. Ribbed only at the umbones, and a little beyond the posterior half of the shell, which is coloured with broad angular brown markings on a very pale ground. More equilateral than the pre- ceding, with the posterior angle and ventral edge rounded. Moluccas. Cuming. 4. Murox soripra (pl. cxxvi. f. 3, 4, 5, 6,7, 8). Venus scripta, Linneus. Donax scripta, Lamarck. M. testa levigata, anticé subelongataé, postice angulo subacuto, intts violaced, extis lineis acutangularibus scripta, variat purpurea, immaculaté; vel alba, vel aurantid, fusca, seripta. In shape and variations of colour like JZ. picta, from which it differs in having no ribs. Indian Ocean. Lamarck. 5. Meroz excavata (pl. exxvi. f. 18, 14), Hanley, Pro. Zool. Soc. 1842; Recent Shells, p. 109. pl. 15. f. 19. M. testa levigata, subrotundata, lata, antic brevi, angusta, postice expansi; margine dorsali elevato, angulo obtuso ; Margine ventrali rotundato ; colore violaceo vel pallid’ fulvo, ‘purptreo interruptim radiato. Broader and rounder than J/. seripta, with the anterior small in proportion to the posterior side, which is broad, with the dorsal margin elevated, the angle obtuse, and the ventral margin much bulged. Japan. 6. Murog susquaprata (pl. cxxvi. f. 9), Sowerby, jun. M. testa levigati, posticé subquadrati, anticé brevi, angusta, margine ventrali subrotundata ; colore pallidé fulvo, fusco radiatim maculato. 611 The anterior side is short and narrow. ‘The shell differs from M. excavata, Hanley, in the squareness of the posterior side, and the length and elevation of the posterior dorsal edge. The ventral edge is not so much bulged. dus. Cuming and Sowerby. 7. Meroz Soranprt (pl. exxvi. f. 10), Gray, Ann. Phil. Wood, Suppl. pl. 2. f. 11. M. testi levigatd, tumidd, subaequilaterali, subovali; margine ventrali rotundato ; colore albo, maculis fasciisque fuscis angulatim scripto. Shell smooth, tumid, and more oval than any of the rest; and nearly equilateral. China. LIST OF FIGURES IN PLATE CXXVI. Fig. 1, 2. M. picta, Sp. 1. 3-8. — scripta, 4. 9. — subquadrata, 6. 10. — Solandri, 7. 11, 12. — effossa, 2. 13, 14. — excavata, 5. 15. — seminuda, 3. MONOGRAPH OF THE GENUS CYTHERAA, Fam. Veneride. Char. Gen. Testa equivalvis, ineequilatera, plerumque ovalis ; impressionibus muscularibus duabus, subreniformibus ; _ pallii impressione plerumque posticé plus minus sinuatd; ligamento externo; lunuld plerumque impressi; cardine dentibus duobus 612 aut tribus cardimalibus, uno sublaterali, plerumque approximo ; epidermide tenui. The Cytheree are distinguished from the Veneres by the cha- racter of the hinge, there being a short lateral tooth generally close to, but distinct from, the cardinal teeth. In the section of Veneres named Dosina by some authors, there is a rudimentary indication of this character, enough to show the uncertainty of our artificial classifications, but not enough to invalidate the pre- sent genus as a useful division. After removing the genus Meroe on the one hand, and Circe and Artemis on the other, we can see no practical utility in other generic divisions which have been proposed for the shells now to be described. 1. Cyruer@a CrassaTettores (pl. exxvu. f. 1, 2, 3), Trigona Crassatelloides, Conrad, Ann. Nat. Sc. Phil. vol. vii. p- 253. t. 19. f..17. Test. jumior, Trigona stultorum ? Gray in Analyst, 1838. Hanley, Sp. Shells, p.105. Wood, Sup. t. 2. f. 2. Cyth. testé subtrigona, crass, subsequilatera, obliqui; cardine et ligamento magnis; margine laterali postico, obliquo, sub- elongato, margine ventrali prope angulum posticum subarcuato ; colore pallido, radiis fuscis violascentibus, vel griseo-fuscescente ; epidermide pallidé fulva, vitred. Shell very thick, with large hinge and ligament; obliquely shaped, although nearly equilateral; umbones prominent, ventral outline rather swollen near the posterior angle, which is not very decided or sudden; colour pale, with rays of brown or purplish ; epidermis pale greenish-yellow, glassy, and smooth; the teeth and muscular impressions marked with purplish-brown. The younger specimens are probably identical with the C. studtorum, figured in Wood’s Index. California. Mus. Cuming, Gubba, §e. 2. Cyraerma puta (pl. cxxvi. f. 4), Sowerby, jun. Cyth. testa C. Crassatelloidi simillima, sed magis angulari et recta; margine ventrale prope angulum posticum rectiusculo. Our figure of this shell is taken from a drawing made long ago ; but we have no idea in what collection the shell is to be found, or from what locality it comes. Mr. Cuming has a shell something like it, but not absolutely identical with it, from China. The species appears much less oblique than C. Crassatelloides, and more angular posteriorly. 613 3. Cyrueraa vireinea (pl. exxvil. f. 5), Adams, Voy. Samarang, Moll. p. 78. Cyth. testi oblong’, subtriangulari, subaquivalvi, crassa, cinerascente-albi, epidermide vitred induta, radiatim obscurissime fasciatd ; latere postico subcoarctato, subviolaceo, lined impresso. Some of the young rayless specimens of C. Crassatelloides pre- sent a general resemblance to this shell, which, however, may be distinguished by the contraction of the posterior side. Moluccas. 4, Cyruer#a Damaorpss (pl. exxvil. f. 7, 8, 9), Gray; Wood, Suppl. Venus, f. 17. C. ponderosa, Koch, Abbild. und Besch. Conch. pl. 1. f. 1. Cyth. testé subtrigond, crassi, levigata, alté, subcompressi ; umbonibus, cardine et ligamento magnis; margine postico brevi- usculo, subplanulato, subangulato ; lunulé elongata, subdistincta ; nargine ventrali anticé rotundato, posticé prope angulum paululim contracto; colore pallido, fasciis radiantibus rubescentibus, vel fuscis, vel nullis, ad angulum posticum purpureo unifasciato, inttis albo. Shell very thick when fully grown, pale, smooth, with radiating bands of purple or brown, with one darker and broader on the posterior angle; umbones elevated, rather tumid, slightly leaning towards the hinder side, which is flattened and rather short ; ventral edge swollen anteriorly, and slightly contracted towards the posterior angle. The hinge is very broad and thick, the ligament large, lateral tooth distant, and interior of the shell pearly white. Red Sea. 5. CYTHERMA VENTRICOSA (pl. cxxvu. f. 6), MS., Brit. Mus. Cyth. testa subtrigond, inflata, altissimd, levi; latere postico laté angulato et complanato, latere antico subincurvato; margine ventrali anticé subrotundato ; lunula cordiformi, margine impress ; colore pallido, fusco fasciatim scripto. Shell very ventricose, as deep as long, smooth, with pale angular markings arranged in irregular concentric bands; the umbones leaning towards the anterior side; hinder side angulated, with a broad flattened space; lunule heart-shaped, defined at the edge. Mr. Cuming’s specimen, which we have figured, is more remark- able in form than those of the British Museum. China. 614 6. Cyrueraa tRIPLA (pl. cxxvii. f. 18, 19, 20, 21, 22), fnnn., Mantis, p. 545; Lamarck, no. 12; Chemn. f. 330, 331. Cyth. testi trigond, crassi, alta, pallidé fulvA vel aurantiaca, nonnunquam fascis violaceis radiata, intis plerumque purpurea ; margine ventrali subrecté, lateribus excavatis ; ared posticd angu- lati, magni, cordiformi; area antici magna, subangulaté ; lunuld distincta, Shell trigonal, thick, deeper than long, of a pale buff or orange- colour, sometimes rayed with purple bands, sometimes deep purple within. ‘There is a peculiar swell in the disc of the shell near the umbones, then the angle is contracted, and again spreads broadly at the ventral margin. Both sides present large cordiform areas, and the lunule is defined by an impressed line. The spreading of the ventral margin does not take place till the shell is full grown. Senegal. 7. CyTHER@A corpicuLa (pl. exxvii. f. 37, 38, 39), La- marck, Anim. s. vert., sp. 11. Cyth. testé ventricosd, alt’, subtrigond; latere antico subro- tundato, latere postico subcoarctato; umbonibus magnis, sub- centralibus; colore pallidé luteo, fascis castaneis radiato, vel omnino castaneo, intis albo. Shell very ventricose, trigonal, with large umbones, and nearly as high as broad; the hinder side almost narrowed to a point, the front side round. The specimens (f. 39) from California, in My. Sowerby’s collection, are pale, with dull-brown rays and dull- brown epidermis. The specimen (f. 38) in Mr. Gubba’s collec- tion has the rays much brighter. Mr. Cuming has one of a chestnut-colour all over. Island of Margarita, West Indies. 8. Cyruerama Hinopsir (pl. exxvin. f. 27), Hanley, Sp. of Shells. Wood, Suppl. pl. 15. f. 35. Cyth. testa C. radiate simili, sed altiore ; latere postico brevi- usculo; umbonibus inflatis; lunulé et ared posticd latis, indis- tinctis, fascia castane’ circumscriptis ; colore pallidé fulvo, fusco fasciato et angulatim lineato ; epidermide velutina. Shell shorter and more inflated than either C. corbicula or C. radiata, the hinder side much shorter than in the former. Instead of a smooth greenish-brown epidermis, it has a velvety coating, as in C. argentina. The specimen figured is from Guayaquil Bay. Dus. Cuming. 615 9. CyrHeraa raprata (pl. cxxvii. f. 28, 29, 30, 31), G. B. Sowerby, Zool. Proc. 1885. p. 28. Cyth. test&i subtrigond, subsequilaterd, gibbosi, pallescente- brunneo radiatéi et undulatim picti, levi, epidermide cornea crassiusculi plus minus induté; lateribus antico posticoque ven- trem versus rotundatis ; margine ventrali rectiusculo, intts levi. The ventral edge is nearly straight, and the sides somewhat squared; the broad rays of colour have undulating markings be- tween them. In these respects, as well as in being rather less ventricose, C. radiata differs from C. corbicula. Salango and Xipixapi, West Columbia; sandy mud, five fa- thoms. Cuming. 10. CyrHer@A GRACILIOR (pl. exxvi. f. 32), Sowerby, jun. Cyth. testa albé, C. radiate simili, sed magis elongata, latere postico subattenuato. A white shell, much more elongated than C. radiata, with the posterior side obliquely drawn out; an impressed line on the ante- rior surface defines the lunule. Locality unknown. Specimen kindly furnished by Mr. Hanley. 11. CyrHer#a Macrrormes (pl. exxvii. f. 36), Diddwyn, p. 178. Chemn. f. 330, 331. Lamarck, no. 27? Cyth. testé ovali-subtrigona, fasciis castaneis radiata, solida, levi; margine ventrali subrotundé; lateribus breviusculis, postico rotundatim subangulato ; ared cardinali postic’ cordiformi, cas- tanei; lunulé indistincté, prope umbones rubra, tim albo uni- fasciata. Shell more evenly oval than either C. corbicula or C. radiata, with the sides shorter, and the whole shell longer in proportion to its height; the chestnut rays are broader than the intermediate whites; the hinge area is reddish-brown near the umbones, with a white broad band enclosing the brown. Probably from the West Indies. 12. CyTHERaA INTERMEDIA (pl. exxvii. f.35), Sowerby, jun. Cyth. test& ovali-subtrigond, albi, subecquilatera, levi, com- pressi; margine ventrali rectiusculo; latere postico subangulato. A white, trigonal, rather compressed shell, neither so high nor so tumid as C. radiata, and having the ventral margin more straight, and the hinder side more squared, than in C. depressa. California. Cuming. 616 13. Cyrner&®a COMPREsSA (pl. cxxviil. f.33,34), Sowerby, jun. Cyth. testi ovali-subtrigond, alba, vel fasciis rubescentibus varié radiata, crassi, laevi, compress’ ; margine ventrali subrotun- dato, prope angulum posticum subcontracto. Shell shaped hke C. Mactroides, but much more compressed. It is nearly equilateral, and the outline of the ventral margin is slightly contracted near the posterior angle. The variety with waved lines between the rays is from the Cape of Good Hope ; this, and the specimen (fig. 33) of a general brown tint, belong to Mr. Hanley. 14. CyrHeraa NiTIDULA (pl.cxxvui. f.25), Lamarck, Anim. s. vert. no. 21. Cyth. “testi ovato-elliptica, laevigata, fulvo-rubente ; cingulis subduabus spadiceo-maculatis ; natibus albidis.”—Zamarck.. Shell resembling the last, but deeper, larger, and more oval. It is coloured by clouded reddish-brown rays, which at the sides branch out into oblique lines. Locality uncertain. 15. Cyrner#a tineata (pl. exxvui. f. 26), Sowerby, jun. Cyth. testé trigond, subventricosa, equilatera, tenui, levigata, subcinered, posticé angulatim trilineata, anticé unipunctata, itis ad latera purpured ; margine ventrali subrecto, lateribus sub- rotundatis ; umbonibus parvulis, lateribus ceeruleis; lunulé sub- angustatd; lined impressd circumscripta. Shell trigonal, longer than high, equilateral, rather thin, smooth, of a pale ashy-buff colour, with three sharply angulated lines at the posterior side, and a spot at the anterior side; both sides strongly marked with purple inside. The umbones are small, with little dashes of blue at the sides; the lunule is defined. This shell is related to the three or four preceding, but by the above characters easily distinguished. The specimen figured, from the collection of Mr. Hanley, is, as far as we know, unique. 16. Cyrueraa Hanteyana (pl. exxvui. f. 23, 24), Sowerby, june Cyth. testé subovali-trigond, subobliqua, inaquilatera, tenui, levi, pallidissimé grisea, fasctis interruptis radiatis fuscis et ad latus posticum maculé und distincté picté; latere postico sub- elongato ; umbonibus parvulis, ceruleis ; lunula indistincta. 617 Shell of a subovate trigonal form, thin, smooth, the hinder side longer than the front; the umbones bluish and small. Colour pale ashy-buff, with one strong spot of brown near the hinder angle, and, in one specimen, a number of interrupted brown rays. Of the two specimens in the collection of Mr. Hanley, the locality is unknown. 17. CyTHER@®A TRIGONELLA (pl. cxxvin. f. 16), Lamarck, Anim. s. vert. no. 28. Trigona angulifera, Gray, in Analyst, 1838. Cyth. “testa trigond, subzequilatera, depressi, pallide fulva ; radius albis, raris; ano lanceolato.”’—Lamarch. The specimen figured is very much like that m Delessert (t. 8. f.3); and this is the only means of identification, as the above description would apply to several. It is oblong, trigonal, almost transparent, nearly equilateral; at the hinder side it is rather squared and has a dark brown band. ‘There is a red softened spot on either side of the umbones, which are small, and the body of the shell is variously coloured with pale rays and several zig- zag brown markings. West Indies. 18. Cyrneraa incerta (pl. exxvii. f.17), Sowerby, jun. Cyth. testa alba, levi, ventricosi, ovali-subtrigond ; umbonibus parvulis, utrimque rubro-tinctis ; lineis pallidis, fulvis, angulatis, sparsis. A small, white, ovate-subtrigonal shell, resembling C. trigonella, but more obese and thick, and not so decidedly oval. St. John’s; J. Hartweg. We have only seen the specimen in Mr. Cuming’s collection. 19. Cyruerma Bricotor (pl. exxvu. f. 10, 11), Gray, nm Analyst. Hanley, Sp. of Shells. Wood, Suppl. pl. 15. f. 16. Cyth. testi trigond, angulata, albi, post angulum castaned, alta, compressa; lateribus et margine ventrali rectis ; latere pos- tico subelongato, acutiusculo; lunuld elongata, distinct; um- bonibus acutis. A white shell, with a dark brown mark behind the angle, rather compressed, and nearly approaching an equilateral triangle in form, the hinder side being a little longer and more acute. The brown specimen is from the Red Sea, in Mr. Cuming’s collection. Senegal. 4.1 615 20. CyTHERMA PLANULATA (pl. exxvu. f. 13), Broderip, Zool. Journ. vol. v. p. 48. Donax Lessoni ? Deshayes, Kine. Méth. vers. p.99. C.planulata, var. suffusa, Sowerby, Zool.Proc. 1835. p.45. Cyth. testi trigond, depressiusculé, subsquilaterali; angulis inferioribus rotundatis ; pallidé flavicante, radiis numerosis fusces- centibus ; inti albida, fusco-violaceo varii; dente postico remoto. Shell triangular, depressed, not quite equilateral (the hinder side being the shorter), white, with a thin epidermis, radiated with brown stripes of various width, purple at the apex and also within at the sides and about the hinge; near the hinder angle there is a sinuous opening between the valves. The variety described im the Zoological Proceedings presents a slight difference in form, and has the rays more spread. Panama. Cuming. 21. CyrHeraa unpuLata (pl. cxxvi. f.12), Sowerby, jun. C. planulata, Sowerby, Beechy Voy. Zool. t. 43. f. 6. Cyth. testi C. planulate simili, sed altiore, solidiore ; radiis interruptis, transvers¢ undulatis ; latere postico clauso; lunuld lanceolata, distincta. Shell less elongated, more equally triangular, and more solid than C. planulata, with the hinder side closed, or nearly so, and paited with a defined broad ray of purplish-brown ; the rays on the surface are composed of beautifully undulated cross bands ; the lunule is long and distinct; the purple patches within well defined and brilliant. Umbones white. Salango, West Columbia; sandy mud, nine fathoms. Cuming. 22. CyrHerma poxita (pl. exxvu. f: 14), Sowerby, jun. Cyth. testa trigon’, depressi, politd, postice angulati, pallidé fulvi, cinerascente, distanter radiatim fulvo fasciaté, ad umbones angulatim lineata, intts alb’; cardine, lateribus et margine purpureo tinctis ; latere postico ad basin subacuto, latere antico rotundato ; lunulé parva, distincta, subinflata. A more smooth and solid shell than C. planulata or C. undulata ; not squared, but angulated at the posterior termination of the lower margin; colour pale brown, with here and there a tint of blue, and three or four brown rays; umbones small, with very delicate fluctuating lines; inner surface white, tinted at the hinge, the posterior side, and about the pallial impression with clouded purple. Mr. Hanley has kindly furnished the only specimen we have seen of this shell. 619 23. Cyrupraa DouaBexa (pl. exxvu. f. 15), Sowerby, yun. Cyth. testé trigond, solidi, alta, pallida, levigati, epidermide fuscé indutd ; latere postico angulato, subexcavato, ad basin sub- rostrato; latere antico rotundato; lunuld parva, distincté; mar- gine ventrali subarcuato ; umbonibus acutis. A pale trigonal shell, with a dark brown epidermis ; the ventral margin and lower part of the anterior side rounded, the posterior angle prominent and acute. Red Sea. Mus. Cuming. 24, CYTHEREA MERETRIX (pl. exxix. f. 48, 49, 50), Linn. Syst. Nat. Lamarck, Anim, s. vert. Cyth. no. 6. Cyth. testi ponderosa, ovali-subtrigond, levi, alba, postice ceruled, prope umbones vel omnino angulatim fusco-maculato ; margine ventrali subinflato; latere postico vix angulato, sub- elongato, ad terminum subacuto ; lunulé magni, indistincta ; iga- mento magno. Lamarck has separated this and the followmg member of the same group upon the mere ground of variations in colour. I am inclined to think that such distinctions are untenable, and am almost persuaded that this species and the eight following might be united under one name, seeing that they pass imperceptibly into each other, and that in a young state it is almost impossible to distinguish them. As, however, such extensive recombinations would hardly be consistent with the usual course of nomenclature, I have endeavoured, from a number of specimens, to arrange a series of variations in form, and have applied to them the same names which Lamarck attached to variations in colour. This species has an oval form, rather lengthened and angular at the posterior side, while the ventral edge is rounded. It is generally white, with a broad purplish posterior area, and a few angular markings near the umbones, or, as in fig. 5, nearly all over the shell. The latter is in Mr. Cuming’s collection, and is from China. 25. CYTHERDA EELECHLALIS (pl. cxxix. f. 51, 52), Lamarck, Anim. s. vert. Cyth. no. 2. Var. C. graphica, Lamarck, no. 7. Cyth. testa C. meretrici simillimi, sed multum altiore ; margine rotundissimo ; latere postico rotundatim angulato; colore sub- griseo, fusco-rufescente angulatim lineato. Shell rounder and higher than C. meretrix ; the ventral margin very much rounded ; the lateral angle rather more distinct ; co- joured in the same way as C. meretria, but without the purple dosterior area. 620 _ Japan, Dr. Sibbald. Mus. Cuming. The small variety in Mr. Sowerby’s collection (f. 52) is perhaps the C. graphica of Lamarck. 26. CyrHeraa Lusorta (pl. exxvui. f. 40, 41, 42), Lamarck, Cyth. no. 1. Var. C. fusca, Koch, Ph. Abbild. t. 3. f.1. Cyth. testa C. meretrici simili, sed latere postico magis angu- lato; margine ventrali subrecto. The ventral edge is straighter, and the lateral hinder angle more distinct. Fig. 40 represents the typical variety, having chestnut-coloured concentric bands, divided into two rays near the umbones; it is in Mr. Cuming’s collection, from the Philippines. Fig. 41 is m Mr. Sowerby’s collection, and co- loured exactly as the typical variety of C. meretrix; and fig. 42 is entirely chestnut-coloured : it is from the collection of Mr. Gubba, and well agrees with C. fusca, Koch. All have broad purplish bands covering the posterior angle. China. 27. CyrHER#A MoRPHINA (pl. exxix. f. 59, 60), Lamarck, Anim. s. vert. Cyth. no. 8. var. Cyth. testa C. meretrict simili, sed lateribus suffusis, lunula magis inflaté, marginibus ecrassioribus ; colore pallide fulvo, griseo radiatim fasciato. Shell thicker, more spreading at the sides, with a rather straighter and thicker margin and more tumid lunule than C. meretrix; no posterior purple band; the colour pale reddish- brown, with greyish rays. Fig. 59, China; Jus. Cuming. Fig. 60, Mus. Hanley. 28. Cyruuraa Formosa (pl. exxix. f. 47), Sowerby, jun. Cyth. testa C. meretrict simili, sed magis obliqui et elongata ; latere postico elongatiusculo ; colore pallido, fasciis griseis suffuso, prope umbones castaneo biradiato. This shell is thinner, more oblique, and more elongated, than C. meretrix, which it otherwise greatly resembles. The hinder part is coloured with grey, which is spread in concentric bands towards the fore part; there are also two broad chestnut-coloured rays, commencing at the umbones, and interrupted near the centre. Locality unknown. Jus. Cuming. 29. Cyruprma zonaria (pl. exxix. f. 58, 54), Lamarck, Anim. s. vert. sp. 5. Var. C. exilis, Chemn. f. 362, 368? Cyth. test& leis angulatis fasciatim picta, C. meretricd stmili, 62) sed posticé validé angulati; margine ventrali prope angulum paulultim contracto. Shell almost trigonal; the posterior side decidedly angular, and the ventral margin very slightly contracted near the posterior angle. The typical variety is marked with fluctuating angular lines arranged in bands. Our specimens are both from China, in Mr. Cuming’s collection. 30. CyrHera#a Impupica (pl. exxix. f. 55, 56, 57, 58). Venus, Chemn. f. 347, 348, 350; Lamarck, Cyth. no. 3. Var. C. castanea, Lamarck, no. 4. Cyth. testi C. meretrici simili, sed magis ventricosa, solidé, et rotundata. Shell much more ventricose, thick, and rounded, than C. mere- tric. One variety is of a pale pink-buff (f. 55); another, the same radiated and suffused with grey ; a third has two brown rays ; and a fourth, C. castanea, Lamarck, is chestnut all over. Fig. 58, Singapore; Mus. Cuming. Fig. 56, 57, Philippines ; Cuming. Fig. 55, Mr. Sowerby’s collection. 31. Cyruerma casta (pl. exxix. f. 43, 44, 46), Gmelin. Var. C. brunnea, Chemn.? Cyth. testA C. meretrici simili, sed solidiore ; C. impudice simili, sed rectiusculd, subsequilater’ ; latere postico subquadrato ; testa pallidé, nonnunquam fascii aurantiaci unici prope marginem cincta ; epidermide rufescente. Shell more straight and square, less oblique and rounded, than C. wmpudica; colour pale, with a reddish epidermis. There is one variety from Ceylon, which always has an orange band near the ventral margin, leaving the remaining space white: Mr. Sowerby possesses specimens of this. 32. CyTHERHA Ovum (pl. cxxix. f. 45), Hanley, Species of Shells. Cyth. testa C. caste simili, sed magis elongata et ovata. Much more elongated and oval than C. casta. 33. CyrHerma Lyrata (pl. exxix. f. 61), Sowerby, jun. Cyth. testi ovali-subtrigon4, crassi, ventricosi, fulv’ grisescente concentricé subundatim sulcata ; latere postico subangulato, fusco ; lunula vix distincta. This beautiful shell takes the form as the group just coneluded, 622 but is characterized by waved, deep-cut, concentric ridges. The hinder side is marked with deep brown. Jinigaran, Island of Negroes, Philippines. Cuming. 34. CYTHERHA ARGENTINA (pl. cxxix. f. 62), Sowerby, sen., Pro. Zool. Soc. 1835. p. 46. Cyth. testé subtrigond, alba, subzequilaterali; latere antico pauld breviore, postico subacuminato; margine dorsali postico rectiusculo, declivi, ventrali rotundato; epidermide tenui, cornea, extis velutind, alba, quasi argentata, induta. Shell subtrigonal, white, subequilateral; the anterior side a little the shorter, the hinder side rather acuminated; the ventral margin rounded; epidermis thin, pale-green, with a velvety, silver-like coating over it. Gulf of Nocoiya, Central America; sand-banks at low water. Cuming. 35. CyrHER#A NOBILIS (pl. exxx. f. 68), Reeve, Pro. Zool. Soc. 1849. Cyth. testé crassi, albi, rotundatd, concentricé subundatim costata, ventricosi; latere antico brevi, rotundato, latere postico unisulcato; margine postico dorsali et ligamento elongatis; lu- nula distincta, excavatd ; umbonibus magnis. A fine, large, heavy, ribbed, rounded, white shell, with hinder dorsal margin and ligament high and long ; lunule excavated, and anterior side short; a depressed ridge at the posterior side. 36. CyrHERzA PuRPURATA (pl. exxx. f.67), Lamarck, Anim. s. vert. Cyth. no. 9. C. lubrica, Broderip, Zool. Proc. 1835. Cyth. testa nitente, crassi, rotundata, subcompressd, purpurea, intiis albi, sulcis inequalibus cincti, posticé obscuré angulata ; margine dorsali subexcavata ; lunula impressa. Shell thick, shining, rounded, purple, white within, rather com- pressed, girt with unequal, distant grooves; dorsal margin rather hollow ; lunule impressed. Puerto Portrero, Central America. Cuming. 37. CYTHERHA UMBONELLA (pl. cxxx. f. 63, 64, 65, 66), Lamarck, Anim. s. vert. Cyth. no. 55. Var. C. nivea, Hanley, Sp. of Shells, p. 97. Cyth. testa crassa, ventricosa, nitente, ovali, iaquilatera, pur- 623 purea vel nived, posticé caeruled, ad umbones fusco maculata ; latere antico brevi, sulcis regularibus concentricis cincto; umbonibus sulcatis, prominentibus ; lunulé cordiformi, subexcavata. Shell oval, thick, ventricose, shining, with the anterior side short and round, and sulcated; the umbones prominent and sul- cated ; the lunule broad, heart-shaped, and hollow. Fig. 64 (Mr. Cuming’s), from Brazil, purple; fig. 63 (Mr. Cuming’s), Red Sea, part purple, very oblique; fig. 65, 66, C. nivea, Hanley, white, with bluish posterior side: all angularly marked with brown at the umbones. 38. CyrHer#a ERYCINA (pl. cxxx. f. 69). Venus erycina, Timn. 1181. Chemn. Conch. f. 337. Cyth. testa ovali, crassi, concentricé planulatim sulcaté, medio fusca, ad margines aurantid, prope marginem dorsalem fusco et albo maculati, omnino fusco et albo interruptim radiata; latere antico brevi; lunula distincta, aurantia. Shell oval, thick, brown at the upper part, orange towards the margin, with a band of white on each side of the lunule, and dorsal margin crossed by zigzag markings of brown, radiated with broad interrupted bands of brown and white, concentrically ridged ; the ridges broad and flat. Philippines. Jus. Cuming. 39. CYTHEREA MULTIRADIATA (pl. cxxx. f. 76), Sowerby, jun. Cyth. testa C. erycine simili, sed costis obsoletis. Like C. erycina, but with the ribs, excepting on a small part of the anterior, obsolete; in the colouring there are also some linear rays with undulating lines between. Bay of Manilla. Cuming. 40. CyrHer«a costata (pl. cxxx. f.70, 71), Chemn. f.1975. Wood, Suppl. pl. 7. £.39. Hanley, Sp. of Shells, p.106. Var. C. Pacifica, Dillwyn, p. 175? Cyth. testa C. erycine simili, sed costis rotundatis, clevatis, alba, lineis fuscis distanter radiata, vel fulva, fusco-nigrescente radiatim fasciata. Like C. erycina, but with the ribs rounded and elevated ; white, with interrupted linear brown rays, or of a dull greyish-brown, with dark broad rays. Fig. 70, from Swan River ; fig. 71, from Port Essington. Jukes. 624 41. CYTHERHA ERYCLNELLA (pl.cxxxi. f.85), Lamarck, Anim. s. vert. Cyth. no. 17. Cyth. test& ovali, levi, fusco distanter radiatim fasciata ; latere antico brevi, sulcato, latere postico subacuminato, planulato ; lunula parva, distincta. From general appearance supposed by some authors to be the young of C. erycina, but it is more pointed at the posterior side, and the grooves only reach from the anterior side to the middle of the shell. Red Sea. 42, CYTHERMA SEMISULCATA (pl. cxxxi. f. 82), Sowerby, jum. Cyth. testi C. erycinelle simili, sed magis elongaté et ovali ; alba, maculis tribus latissimis subceruleis radiatim albo inter- ruptis medio picta. Besides the form, which is more elongated and more regularly oval, the colour of this shell, consisting of three very broad radiate patches in the centre of a white ground, distinguishes it from C. erycinella. One specimen from Australia, in Mr. Cuming’s collection, is all we have seen. 43, CYTHEREA PULCHRA (pl. cxxx. f. 73), Gray, Wood’s Suppl. t.2. £16. Hanley, Sp. of Shells, p. 104. Cyth. testa ovali, levigaté, pallidé fulvi, griseo marmorati, lineis purpureis radiata, anticé sulcaté, brevi; lunuli purpurea, impressi ; aredi dorsali lividi, angulatim fusco-lineaté; latere postico ad terminum subacuminato. Shell oval, smooth, pale fawn-coloured, marbled with brownish- grey, radiated with dark purplish broad lines ; lunule impressed, dark purple; dorsal area grey, with fluctuating angular lines across; anterior side short, grooved ; posterior side rather length- ened, rather acuminated at the end, and smooth. Red Sea. 44, Cyramraa Stvensts (pl. exxxi. f. 79, 80). Venus Chi- nensis, Chemn. f. 1976. Cyth. testé subovali, subdepressi, dimidiatim sulcati, alba, rufo radiata et maculaté ; margine dorsali albo, elevato; lunula impressi, rubra; latere postico subacuminato. Shell more broad and depressed than the preceding members of the same group, with the sides more elevated towards the umbones. China. 625 45. CYTHERMA SPATHULATA (pl.cxxx1. f.78, 79), Sowerby, jun. Cyth. testé C. Sinensi simili, sed altiore ; margine dorsali fusco angulatim maculato ; disco fulvo, fusco interruptim radiato ; la- tere fusco, unifasciato. Shell coloured like C. erycina, except that the margin is not orange ; it is shaped like C. Scmenszs, but with the dorsal margin more elevated, and white, marked across with angular spots. Australia. The specimen figured from Mr. Cuming’s collection is the only one we have seen. 46. CyrHerma impar (pl. cxxxi. f. 77), Lamarck, Anim. s. vert. Cyth. no. 16. Cyth. testd subovali, crassi, levi, alta, anticé sulcataé, omnino fasciis fuscis violascentibus interruptis radiata, intts violaceo tincté ; margine dorsali livido, retuso, fusco maculato, subangu- lato ; latere antico brevissimo, postico obtuso ; lunuld excavati, lividi ; umbonibus magnis. Shell smooth at the back, ribbed in front, large and rather angular at the dorsal margin and umbones, short in front, long and obtuse behind; nearly white between the greyish-brown interrupted rays ; dorsal margin livid; lunule concave and livid. The peculiar characteristic of this shell is the obtuseness of the posterior side, at the termination of the ventral margin. Australia. 47. CyrHER#A Festiva (pl.cxxx. f. 72), ——? (tablet of Paris Museum). Cyth. test& subovali, crassi, levi, anticé sulcata, fulvo-rubes- cente, lineis et fasciis rubris radiata; latere antico brevi, postico ad terminum subobtuso ; lunulé impressd, rubra. Shell like C. mpar, but not so high nor so thick at the umbones, nor so obtuse at the posterior termination. The colouring is also different, being composed of bands of ght brown and pinkish- white, crossed by radiating lines and bands of rose-red ; Innule red and impressed. Locality unknown. The specimen figured is remarkably beau- tiful, and belongs to Mr. Hanley. 48. CYTHERHA PECTORALIS (pl.cxxx. f.75), Lamarck, Anin. s. vert. Cyth. no. 18. Cyth. testa ovali, subelongaté, subdepressi, concentricé multi- 4M 626 sulcata, violascente-fulvo radiatim fasciaté; margine dorsali alba, fusco maculata; lunuld livida. Shell rather more depressed and elongated than the preceding, not so elevated and angular at the posterior side, and having the dorsal margins white marked with angular spots of brown, ra- diated with brown, which becomes of a blackish-violet near the ventral edge; lunule well defined and of a strong purple tint. The shell agrees well with Lamarck’s description, with the exception of its being of a large size. St. Nicholas, Island of Zebu, Philippines. Cuming. 49. CytHERa@A LILACINA (pl. cxxx. f.74), Lamarck, Anim. s. vert. Cyth. no. 15. Cyth. testa ovali, ventricosi, concentricé sulcata, fulva, obscuré radiata, posticé subangulaté ; margme dorsali livido; lunula dis- tincta, livida. Shell ventricose, oval, sulcated, brown, with obscure rays ; hinder side rather angulated; dorsal margin of a dull purplish tint. Island of Corigidor ; Cuming. 50. Cyreraa oBusa (pl. exxxi. f. 83, 84), Sowerby, jun. Cyth. testa ovali, leevigata, ventricosa, crassa, obscuré biradiata, in radiis maculata ; lunuld impressa. Shell oval, smooth, ventricose, thick, cream-coloured in the middle, dull white near the margins, rayed obscurely with two broad bands, upon which are reddish square spots. Locality unknown. We have seen only the one specimen figured from Mr. Cuming’s collection. 51. CyrHerA PIPERITA (pl. cxxxvi. f. 175), Sowerby, jun. Cyth. testa lubrica, parva, ovali, subdepressi, pallidé fulva, griseo obscure radiata, maculis mgrescentibus parvis angulatis sparsi; latere antico brevi, obscure sulcato, postico subacuminato ; lunuld distincta. Shell very shining, rather small, oval, pale fawn, with very obscure rays of grey and sprinkled with sharp, black, angulated spots ; anterior side short, with a few grooves; posterior side rather acuminated ; lunule distinct. Island of Burias, Phihppines. Cumino. 627 52. Cyruer“a Purtipernarvum (pl. cxxxvi. f. 176), Han- ley, MS. Cyth. testa rotundati, ventricos’, concentricé sulcati, subrosed, maculis et radius rubescentibus variegati; latere antico brevi, postico subquadrato; lunuld et marginis dorsalis parte rubris. Shell rounded, ventricose, concentrically grooved, of a rosy tint, variegated with purplish-red rays and spots; hinder side a little squared ; front side short; Iunule and edges of the liga- mental fulerum reddish. Philippines. Cuming. 53. CyTHER#A FLORIDA (pl. cxxxvi. f. 193, 194, 195, 196), Lamarck, Anim. s. vert. Cyth. no. 20. Cyth. testa ovali, subdepressi, concentricé sulcata, subrosed, maculis, lineis, et radiis rubescentibus variegata, inttis plerumque purpureo nebulaté; margine dorsali lineato; lunuld parva, dis- tincta. Shell oval, depressed, concentrically grooved, pinkish, varie- gated with reddish spots, lines, and rays; anterior side short ; lunule small, distinct ; dorsal margin cross-lined ; inside clouded with purple. Locality unknown. 54. CYTHERAA SIMPLEX (pl.exxxvi. f. 182, 183), Sowerby, jun. Cyth. test& parva, solida, levi, ovatd, subdepressi, grisescente- castaned ; margine dorsali albo, nigrescente-fusco angulatim maculato ; latere antico brevi, rotundato, postico subacuminato ; lunula indistincta. Shell small, solid, smooth, depressed, rather oval, of a deep chestnut colour, mingled with dark grey, and at the dorsal margins white, with dark, angular cross markings; anterior side short, rounded, posterior side rather acuminated. In Mr. Gubba’s collection. 55. CyruHer#a mopesta (pl. exxxvi. f. 184), Sowerby, sen., Pro. Zool. Soc. 1835. p. 47. “Cyth. testé obovati, crassiusculi, levi, concentricé sulcati, sulcis obsoletiusculis ; albo, fusco et fusco-purpurascente varia ; apicibus subprominulis ; latere postico longiore, declivi.” Shell oval, smooth, concentrically grooved, variegated with whitish-brown and purplish-brown ; hinder side rather lengthened and sloping, so as to meet the vertical margin in an angle. Xippixapi, Central America. Cuming. 628 56. CyrHeraa MULTISTRIATA (pl. cxxxvi. f. 177), Sowerby, Jumor. Cyth. testé ovali, subelongatd, concentricé striata, fulva, fusco et roseo variegati et imterruptim radiata; latere antico brevi, postico subacuminato ; lunula rubra. Shell oval, rather elongated, concentrically striated, buff, varie- gated with pinkish-brown waved lines and interrupted rays ; anterior side rather short, hinder side rather lengthened and acuminated ; lunule rose-coloured, scarcely defined. New Zealand, Mr. Hart. Mus. Cuming and Sowerby. 57. CyYTHER@A GIGANTEA (pl. exxxi. f. 86), Laan. Syst. Nat. Gmel., p. 3282. Cyth. testi oblonga, subovali, compressi, levi, magna, ru- bescente-fulva, maculis quadratis fusco-nigrescentibus interruptim radiata, intus albi; latere antico brevi, subacuminato, postico elongato, ad terminum subquadrato; margine dorsali subretuso ; ligamento elongato ; lunuld oblonga, distincta. Shell oblong, rather flat, smooth, large, of a pinkish fawn- colour with broad dark square spots disposed in rays, white within ; anterior side short, but rather narrowed at the end; posterior side long, rather squared at the end; posterior dorsal margin rather retuse ; ligament long; lunule distinct. It attains a much larger size than the specimen figured, which is reduced one-half. Gulf of Mexico. 58. CyrHER#A AURANTIA (pl. exxxi. f. 97 bis), Hanley, Sp. of Shells, appendix. Mood, Supp., pl. 15. f. 20. Cyth. test& ovali, crassi, laevigata, aurantiacd, intis alba, epi- dermide fusci induté ; latere antico brevi, rotundato, latere pos- tico obscuré biangulato, ad termmum subacuminato ; ligamento elongato ; lunula elongata, distincta. Shell oval, thick, smooth, of an orange-colour, paling off towards the umbones to a fawn tint, covered with a rather thick reddish- brown epidermis; ligament long; lunule long, defined by an impressed line ; anterior side short, rounded ; posterior side with two very obtuse radiating angles, rather acuminated at the basal termination. I figure a fine specimen from Mr. Cuming’s col- lection. 59. Cyrupraa Curone (pl. exxxu. f. 98), Lenneus, p. 1131. Cyth. test& ovali, crass’, subcompressa, levigata, fulva, fusco- 629 rubescente maculati et radiati; latere antico brevi, rotundato, postico rotundato ; lunulé elongaté, distinctd, vix tumida ; liga- mento subelongato ; margine dorsali subelevato. Shell oval, rather compressed, smooth, fawn-coloured, with brown rays and spots; anterior side short, rounded; lunule rather long, defined, and raised ; posterior side rounded, elevated at the dorsal margin. England, and the Mediterranean. Mr. Cuming’s specimens are from Mazatlan. 60. CyrHerma MacuLata (pl. cxxxi. f. 93, 94, 97), Lcnnaus, p- 1182. Cyth. testa C. Chioni simili, sed anticé elongatiusculd, prope lunulam magis excavati, posticé subacuminatd, subangulata ; lunulad tumida. Shell generally flatter and less rounded than C. Chione, with the dorsal margin and lunule tumid. The colouring is arranged in square spots, disposed angularly, and partly collected into two central rays; in one variety these spots are purple. South America. The very acuminated variety, fig. 98, 94, is from Australia, in Mr. Cuming’s collection. The posterior elongation does not commence till the shell has attained a con- siderable growth. 61. CyrneR#a uUNIcoLoR (pl. exxxi. f. 90, 91), Sowerby, sen., Pro. Zool. Soc. 1885. p. 23. “Cyth. testé ovato-subcordiformi, crassiusculé, brunnescente, levi, politi; latere antico posticoque concentricé sulcatis, sulcis medio obsoletis ; latere postico longiore, versus partem ventralem subacuminato; margine ventrali levi, intis purpurascente.” Shell heart-shaped, rather thick, whitish or brown, smooth, grooved at the sides, plain in the middle ; the hinder side longest, angulated, and near the ventral margin rather acuminated. Xippixapi, West Columbia ; coarse sand, at 6 fathoms. Cuming. 61.* CyrHEeraa sQuaLipA (pl. cxxxi. f. 87, 88, 89), Sowerby, Pro. Zool. Soc. 1835. p. 28. Var. C. biradiata, Beechey’s Voyage. “Oyth. testa ovato-subcordata, crassiuscula, rubente-albicante radiata ; latere postico longiore, subacuminato; costellis nume- rosis, concentricis, obtusis, concinnis, confertis.” Shell more angulated posteriorly than C. maculata, and with the lunule and dorsal margin less tumid. Although named from the 630 dull greyish-brown tint which prevails in the species, some of the varieties are beautifully variegated; for instance, the variety fig. 87, from California, in the collection of Mr. Gubba, and the biradiate variety with bright purple bands, from the Philippines (C. biradiata, Beechey’s Voyage). The species was first named from specimens brought from the Philippine Islands by Mr. Cuming. 62. CyTHERMA AFFINIS (pl. cxxxi. f. 101), Pro. Zool. Soc. 1835. p. 45. “Cyth. testa ovato-oblonga, planiuscula, leis distantibus ele- vatis subacutis concentricis albente-violaceis radiati, posticé vix sublobaté; are& postici violace’; lunulé pallida, inttis alba; limbo interno levi; epidermide fusca, tenui.”’ Shell oblong-ovate, rather compressed, ribbed concentrically, white, with pinkish rays, anterior side short, rounded ; posterior side lengthened, angulated, and acuminated, and near the angle sinuated; ligament long ; lunule short, defined. Xippixapi, West Columbia. Cuming. 63. CytHERms TorTUOSA (pl. exxxi. f. 102, 103), Broderip, Pro. Zool. Soc. 1835. p. 45. “Oyth. testa obliqué cordati, posticé sublobata, lineis frequen- tibus subconcentricis obtusis posticé irregularibus, albA, umbones versus subspadiceo-alba.” Shell more rounded and more ventricose than C. affinis, less angular and acuminated posteriorly, with the ribs in some in- stances divided and irregular. We have a dark reddish-brown and a white variety. Xippixapi, West Columbia. Cuming. 64. Cyruerma CoNncINNA (pl. exxxu. f. 99, 100), Sowerdy, sen., Pro. Zool. Soc. 1835. p. 23. “ Cyth. testé ovato-subcordata, crassiusculd, rubente-albicante radiata ; latere postico longiore, subacuminato ; costellis nume- rosis, concentricis, obtusis, concinnis, confertis.” Shell shaped like C. distorta, but with the ribs very much more close and numerous; the hinder side acuminated, but not angu- lar; colour brown with white rays, or white with one or two brown rays, or with numerous beautifully softened and divided pink rays. Panama; in ten fathoms, fine sand. Cuming. The first-men- tioned variety, fig. 100, is in the collection of Mr. Gubba. 631 65. Cyrnerma circinata (pl. cxxxu. f. 104, 105, 106), Born, Mus. t.4. £.8. Venus rubra, Gmel. 3288? C. alternata, Broderip, Pro. Zool. Soc. 1835. p. 45. Cyth. testa ovali-subrotundata, ventricosi, alti, albi rubro-ra- diaté seu omnino purpured; laminis erectis, acutimarginatis, in medio numerosis, ad latera distantioribus, productioribus, concen- tricé costaté ; margine dorsali plerumque purpureo; lunula dis- tinct’, plerumque purpurea. Shell rather rounded, ventricose, with laminar ribs, which are less numerous and broader at the sides, particularly at the ante- rior, white, with purple rays, or entirely purple, generally with the dorsal margin and lunule of a darker purple. The ribs are unequal, and in the variety named C. alternata by Broderip, every alternate one dies out near the sides, the other being more expanded. Mazatlan, Donnel, R.N. Var. C. alternata, fig. 104, West Columbia; dredged in sandy mud at fifteen fathoms. Cuming. 66. CyrHER#A CYGNUS (pl. cxxxu. f. 107), Lamarck, Anim. s. vert. Cyth. no. 77. Cyth. test& alba, C. cercinate simili, sed umbonibus ventricosis, elevatis ; margine dorsali retuso, subplanulato; lunulé magna, cordiformi, distinctd, impressa. Shell more ventricose, with larger and more elevated umboes than C. circinata ; the posterior dorsal margin retuse ; the lunule large and distinct. Locality unknown. Mus. Cuming. 67. Cyrner#a Dione (pl. cxxxu. f. 110), Lanneus, Syst. Nat. p. 1128. Cyth. test ovali, subventricosa, alba, violaceo tinctd, laminis elevatis acutis usque ad angulum cincta, postice subelongati, angu- lata, ad angulum spinis elongatiusculis ornati, post angulum vix striata ; prope umbonem serie alterd spinarum breviuscularum ; margine dorsali declivi, subinflaté, nonnunquam rose’; lunula parva, nonnunquam rosea, distincté; latere antico laminis alteris evanidis, alteris expansis. Shell oval, with two rows of spines at the hinder side, one at the angle with the spines long, the other behind, near the um- bones, with the spines shorter ; lamina erect and sharp-edged, some reaching to the front as far as the edge of the lunule, where they are much expanded, others terminating sooner. Venezuela and Trinidad. 632 68. Cyrnerma rosEa (pl. cxxxu. f. 108), Broderip and Sowerby, Zool. Journ. vol. iv. p. 48. C. lepida, Chénu, Conch. Illustr. Cyth. testa quam C. Dione magis compressi, purpured, costis numerosis, rotundis; latere antico laminis prominulis, acutis, raris ; latere postico ad angulum serie und spinarum incipientium. Shell much flatter than C. Dione, nearly all rosy-purple, with numerous rounded concentric ribs ; anteriorly with a few promi- nent sharp-edged laminz ; posteriorly with a row of rudimentary spines at the angle. Panama. Cuming. 69. CyrHerza Luprnartia (pl. exxxu. f. 111), Lesson, Cen- turie Zoologique, pl. 64. p. 196. C. semilamellosa, Chéxu, Conch. Illustr. pl. 9. f. 9. Cyth. C. Dionz simili, sed laminis medio evanidis; latere pos- tico levigato ; spinis elongatiusculis. Shell larger than C. Dione, with the ribs flatter, and near the angle almost vanishing ; posterior side smooth; spines long, with purple spots at the base. Real Llejos, Central America. Cuming. 70. CyrHER#A MULTISPINOSA (pl.cxxxil. f.112), Sowerby, jun. Cyth. testé quam C. Dione magis ventricosi; laminis magis elevatis, subeequalibus, ad angulum subtruncatis; spinis magis numerosis. The laminz are much elevated and nearly equal, terminating near the spines in an abrupt declivity ; spines more numerous and sharp than in C. Dione. Tombez, Peru; in soft mud, at ten fathoms. Cuming. 71. CyrHER#A BREVISPINOSA (pl. cxxxii. f.109), Sowerby, juin. Cyth. testa alba, C. Dione simili, sed costis rotundatis ; spinis brevissimis, in serie unicdi depositis; anticé laminis paucis ele- vatis ; margine dorsali prope umbones subretuso. Shell white, with the ribs rounded, except at the anterior side, where a few of them are elevated into broad lamin; one row of spines very short. We have only the specimen figured from Mr. Cuming’s collection, from California. 72. CyTHER&A VULNERATA (pl. exxxi. f. 95, 96), Broder, Pro. Zool. Soc. 1835. p. 46. “Oyth. testa subglobosa, lineis concentricis creberrimis levibus, 635 albente, fasciis angustis purpureo-sanguincis hine et hine ornata ; lunulé et arei postici subatropurpureis ; limbo ventrali rubro, inttts subcrenulato; epidermide subfuscd, ints alba subrosco suffusi.” Shell of an oval form, with fine raised concentric lines ; white, with here and there a concentric narrow line or band of a sangui- neous tint ; red margin, slightly crenulated within. Real Llejos, Central America. Cuming. 73. CyrHeR&A ALBINA (pl. cxxxin. f.121), Lamarck, Anim. s. vert. Cyth. no. 25. Cyth. testa crassi, rotundato-subtrigona, alba, alt, concentricé obscure striata; latere antico brevi, recto, declivi; lunulé indis- tinct. Shell thick, of a somewhat trigonal form, rather rounded, white, with obscure concentric ridges; the anterior side very short, and leaning straight down towards the ventral margin; no distinct lunule. 74, Cyrueraa triecona (pl. exxxui. f. 120). Artemis tri- gona, Reeve, Conch. Icon. Cyth. testa, crassa, alta, ventricosd, subtrigond, concentricé cos- tellata, albi; latere postico declivi, ad marginem ventralem sub- lobato ; latere antico brevi, declivi; lunulé magna, ovali, distincta. Shell more trigonal than C. adbina, and more distinctly ribbed ; the ventral margin almost emarginated; the anterior side very short, with a large oval lunule defined by an impressed line. 75. CyrHEra@a rostrata (pl. cxxxii. f. 122), Koch, Phil. Abb. Cyth. t.1. f. 3. Cyth. test’ obliqué ovali, pallidissimé fulva, concentricé sub- striata; latere postico elongato, ad terminum subquadrato, ob- scuré radiatim unisulcato; latere antico brevissimo, declivi, sub- angulato ; lunula distincta. Shell obliquely oval, almost white, irregularly and finely striated ; the hinder side elongated, square at the end, with an obscure ra- diating groove; umbones elevated; anterior side very short, leaning straight down to the ventral margin, and rather angu- lated ; lunule large, distinct. Brazil. 75*, CYTHERHA ACUMINATA (pl. cxxxvi. f. 178), Sowerby, jun. Cyth. testi parva, alba, subtrigond, compressa, clevata, concen 4 N 634 iricé striata; latere postico acuminato, subangulato; latere an- tico breviusculo, subinflato ; lunula magna, distincta. Like a miniature of C. trigona, but flatter, more acuminated behind, and more finely striated. Locality unknown. Mus. Sowerby. 76. CyrHeraa TeLiinorpea (pl.cxxxvi. f.191), Sowerby, jun. Cyth. testi ovali, compressd, levi, subalbidi; latere postico subelongato, acuminato, margine dorsali declivi, subangulato, margine ventrali posticé subemarginato ; latere antico brevi, rotun- dato, lunuld angustaté, distincté, complanata. Shell oval, flat, smooth, nearly white; posterior side long, acu- minated, lobed, with the dorsal margin sloping; anterior side short, rounded, with the lunule narrow, flat, and distinct. One specimen of this shell, which has the appearance of a Zeddina, 1s in the collection of Mr. Hanley. 77. Cyrnerza Manttxe (pl. exxxvi. f. 180, 181), Sowerby, Ju. Cyth. testé ovali-subtrigona, ventricosd, alba, concentricé striata, posticé acuminati, sublobati, anticé breviusculé; lunuld até, subcomplanata, distincta. Shell of an oval or subtrigonal form, ventricose, white, con- centrically striated; the hinder side lobed and acuminated, the anterior side shorter ; the lunule broad, flattish, distinct. Mr. Cuming’s specimens are from Manilla. 78. CyrHeraa INDECORA (pl. exxxvi. f.179), Philippi, Ab- bild. Cyth. t.9. £. 7. “ Cyth. testa cordato-trigond, satis tumida, utrinque subangulata, exquisite transversim sulcato-strigata, alba, epidermide lutescente obducté; lunulé magna, cordatéi, line& impressi circumscripta, ceterum haud distincté; aredi nulli; lgamento subocculto.” “ Patria, Mergui ; legit Th. Philippi.” The shell which we have figured is in the collection of Mr. Sowerby, sen. Although scarcely trigonal enough, it agrees on the whole with the above description. 79. CyrHerma FLuctuata (pl. exxxvi. f. 185, 186), Sowerby, Jun. Cyth. test’ ovali, subventricosi, alba, epidermide subvinidi in- duta, lineis rubescentibus angulatim fluctuataé, concentrice striata ; 635 latere antico brevi, subacuminato, lunulé distincta ; latere postico subquadrato, margine dorsali elevato ; Ligamento retuso. Shell of a somewhat rounded oval form, white, with angular markings, and a light greenish epidermis, concentrically striated ; anterior side short, with a distinct lunule ; posterior side rather squared, with the dorsal margin elevated, and the ligament nearly hidden. The larger specimen figured is in Mr. Cuming’s collection, from St. Elena; the smaller, which, although less ventricose and more oval, resembles the younger portion of the other, is Mr. Hanley’s. 80. Cyrueraa Betcuert (pl. exxxvi. f. 188), Sowerby, jun. Cyth. testé subovali, fulvi, concentricé sulcis subundulatis ru- gaté; umbonibus elevatis, acuminatis ; latere postico subacumi- nato, margine dorsali declivi; latere antico breviusculo, declivi, lunula vix distincta. The surface of this little brownish shell is roughened by a kind of concentric ripple-mark; the elevated umbones and sloping sides give a somewhat triangular appearance to an otherwise oval form. The only specimen we have seen was brought by Capt. Belcher, and is in Mr. Hanley’s possession. 81. CyTHERAA ANGULIFERA (pl. exxxvi. f. 189), Sowerby, jun. Cyth. testa oblongo-subovali, alb’, maculis angulatis sparsim subradiatim picti, concentricé striata; latere postico elongato, subacuminato ; latere antico brevi, lunula parva, distincta. Shell rather elongated, oval, whitish, with angular dark red- dish-brown markings, ctmeted concentrically tht: side rather lengthened, acuminated, with the dorsal edge sloping ; front side short, sloped, with small, distinct lunule. 2. CytHERaA PANNOSA (pl. cxxxi. f. 140, 141, 142), Sowerby, sen., Pro. Zool. Soc. 1835. p.47. C. lutea, Koch, Phil. Abbild. t. ui. f. 5. Cyth. test& subovata, crassiusculd, levi, albicante, maculis strigis lineisve angulatis ‘luridis obscurd picta; apicibus subpro- minentibus.” Shell rather oval, with straight falling sides, smooth, rather thick, whitish, variously ornamented with brown rays and_ lines and angular markings; lunule small and distinct. Coquimbo ; in sandy mud at low water. Cuming. 636 83. CyrnERaA ALBO-crncTa (pl. exxxvi. f.187), Sowerby, jun. Cyth. testa ovali, subtrigond, parva, solida, fulvi, albo-fasciata, minutissimé striatéi; latere postico declivi, acuminato ; latere antico declivi, breviusculo, lunulé subdistincta. Shell small, solid, sub-ovate, with sloping sides, dull pale brown, with white bands, very finely striated; lunule not very distinct. Brought by Captain Belcher ; specimens in Mr. Hanley’s and Mr. Sowerby’s collections. 84. CyrHeraa Lava (pl. exxxi. f. 123, 124), Linn. Syst. Nat. 1182. CC. prora, Conrad, A. N. 8. Phil. vol. vii. p. 253. t. 19. f.18. V, affinis, Gmel. ? Cyth. test’ inflaté, subrotundata, levi, albidd, fasciis fulvis interruptim radiata, intus rose’; latere postico rotundatim sub- quadrato, margine dorsali inflato, margine ventrali anticé elevato ; latere antico brevissimo, carind und angulato ; lunulé distincta, subexcavata. Shell very inflated, rounded, smooth, pinkish-white, with generally interrupted reddish-brown unequal rays; hinder side slightly quadrate, with elevated and inflated dorsal margin ; front side short, with the ventral margin raised upwards, meeting at an angle a sort of blunt keel surrounding the lunule, which is dis- tinct and rather hollow. ‘There is a tinge of pink inside under the umbones. Mr. Cuming’s specimens are from Albay, Island of Luzon, Philippines. 85. CyrHEr@a OBLIQUATA (pl. cxxxil. f. 125, 126), Hanley, Sp. of Shells, Appendix ; Wood, Suppl. pl. 15. f. 24. Cyth. test C. dete simili, sed magis obliquati, magis depressi ; alba, prope umbones fusco punctata. Shell like C. Zeta, but. more oblique, more depressed ; white, with small spots of brown near the umbones. Philippines. Cuming. 86. Cyrupraza crrrina (pl. cxxxu. f. 117, 118), Lamarck, Anim. s. vert. Cyth. no. 24. Cyth. testa ovali, ventricosi, citrind vel pallidé luted, postice laté purpurco unifasciaté, irregulariter concentricé striata ; latere postico subdeclivi; latere antico brevi ; lunula lata, distancta. 637 Shell oval, irregularly striated, very ventricose, of an orange or pale yellow tint, with a broad purple band at the posterior side, which is rather sloped and slightly squared; anterior side short, rounded, and with a very broad lunule, defined. The orange-coloured specimen is Mr. Sowerby’s; the other was collected by Mr. Cuming at Albay, Island of Luzon, Philippines. 87. CyrHeraa striata (pl. exxxi. f. 113, 114,115), Gray? in Analyst, 1838. C. citrina, Lam., Chénu, Conch. Ul. ; Wood, &c. Cyth. testa C. citrine simili, sed magis compressa, posticé prope margiuvem dorsalem subangulatéi; margine dorsali declivi, sub- complanato. Nonnunquam occurrit alba. Figured in the ‘Illustrations Conchyliologiques’ as C. citrina of Lamarck, but not agreeing so well with the description as the one given above. ‘This shell is more compressed than C. citrina, with a sloping and somewhat angulated posterior dorsal edge. River Gambia. Mus. Cuming. 88. CyTHEREA SUBINFLATA (pl. cxxxi. f. 116), Sowerby, jun. Cyth. testé ventricosi, subrotundata, levi, fulva, prope um- bones angulatim maculata, ttm albo radiata; umbonibus elevatis, inflatis ; latere postico rotundatim subquadrato; latere antico brevi, lunula distincta. Shell ventricose, rather rounded, smooth, fawn-coloured, the umbones elevated, inflated, and marked with undulating lines; hinder side slightly squared; front side rounded, short, with defined lunule. Locality unknown. Jus. Sowerby. 89, CyrHERaA INFLATA (pl. cxxxiil. f. 127,128), Sowerby, jun. Cyth. testa inflata, subovali, levi, alba, fusco radiatim variegata ; latere postico subquadrato; latere antico rotundato, breviusculo, margine ventrali elevato; lunulé indistincta, subexcavata ; um- bonibus subretrorsis. Shell ventricose, oval, smooth, white, with brown variegated rays on the upper part. The umbones, which are inflated, have a tendency to lean backwards; the ventral margin is raised in front to meet the rather hollow surface, which contains a broad but rather indistinct lunule. Moluccas; also St. Nicholas, Island of Zebu, Philippines. Cuming. 638 90. Cyrmer@a CONVEXA (pl. exxxu. f.119), Say. C. Sayana, Conrad, Silliman’s Journal, vol. xxii. p. 345. Cyth. test& ovali, ventricosi, fulva, subrugosi; latere antico brevi ; lunula vix distincta. Shell oval, brownish, ventricose, roughened by concentric irregular and rather coarse striz. Rhode Island; New Jersey. Specimens, Mr. Cuming’s and Mr. Hanley’s. 91. OyTHER#A PALLESCENS (pl. exxxil. f. 1385), Sowerby, sen., Pro. Zool. Soc. 1835. p. 47. “Cyth. testa obovati, tenui, pallidé lutescente, levi, concen- tricé striatd ; latere antico breviore, apicibus subprominulis ; im- pressione cordiformi, anticé elongata, distincti.” Shell of an oval flattish form, rather light, pale yellowish, or with a purplish tinge near the umbones; concentric stric so fine as to give asilky appearance to the surface. Island of Annaa, Pomoutian Group; in coral sand. Cuming. 92. CyrHer@a INconsPIcuA (pl. exxxu. f. 133, 134), Sower- by, sen., Pro. Zool. Soc. 1835. p. 47. “Cyth. testi obovata, crassiuscula, levi, albida, concentricé Rr. Sarge na asta ‘ : seca ZEe Me striata, striis exilissimis ; epidermide tenuissima, pallidé subfusca ; apicibus subprominulis; impressione cordiformi, antici ovata, inconspicua.” Shell more thick, and with the striae more distinct than the preceding. Payta, Peru. Cuming. 92%, Cyrueraa Kinet (pl. exxxii. f. 129, 130, 131, 132), Gray, Wood’s Suppl. Venus, f.9. C. modesta, kdzlippi, Abbild. t.i. f.3. Var. C. Lamarck, Gray, Analyst, 1838; Hanley, Recent Shells, p. 103. Var. C. albida, Gray? Var. C. bilunu- lata, Brit. Mus. Cyth. test’ ovali-oblonga’, subcompressi, medio laevigata, ad latera substriata, albidé, castaneo fasciatim varie radiata; latere antico brevi, declivi, lunulé elongata, subcomplanata, distincta ; latere postico elongato, subquadrato, margine dorsali subelevato. Shell oval, oblong, not very ventricose, smooth in the middle, slightly striated at the sides; whitish, generally with chestnut rays cither linear or broad; anterior side short, sloped, with the lunule long and defined ; hinder side elongated, rather square, 639 with the dorsal edge rather elevated. This description will in- clude the several varieties, which have been differently named: Fig. 132, C. ditunulata, Brit. Mus. ; fig. 129, C. Lamarchi, Gray, the chestnut rays nearly covering the shell, and only leaving white rays; fig. 130, C. Kingii, Gray (C. modesta, Philippi), with narrow interrupted rays, in Mr. Hanley’s cabinet, and also that of Mr. Cuming (brought by Dr. Hornbeck from the island of St. Thomas, West Indies); and fig. 151, rather longer than the others and white, from Nicobar (Cuming). 93. CyrHER#A PELLUCIDA (pl. exxxvi. f. 190), Lamarck, Anim. s. vert. Cyth. no. 43. Cyth. test’ rotundati, ventricosi, tenm, levi, albidi, maculis fuscis angulatis seriatim radiati ; latere antico brevi, lunulad parva, indistincta, purpurea; latere postico subquadrato, margine dorsali elevato. Shell rounded, rather ventricose, very thin, smooth, whitish, with interrupted light-brown rays, and a little purple spot on the lunule close to the umbones; anterior side short, sloping; pos- terior side rather syuarish, with the dorsal margin elevated. New Holland. Mus. Hanley. 94, CyTHERHA SUBPELLUCIDA (pl. exxxii. f. 136), Sowerdy, jumor. Cyth. test& subovali, ventricosi, tenu, levi, purpurascente- grisei, maculis fuscis seriatim radiata; latere antico brevi, lunulé indistincta ; latere postico subelongato, subquadrato, margine dorsali declivi ; umbonibus prominulis. Shell resembling C. pellucida, but of a darker colour, more elon- gated posteriorly and having the dorsal edge more sloping ; it has not the purple spot on the lunule. Albay, Island of Luzon, Philippines. Cuming. 95. CyrHER#A VARIANS (pl. cxxxui. f. 138, 139), Hanley, Sp. of Shells, Wood’s Suppl. pl. 15. f.33. C. rubiginosa, Piz- lippi, Abbild. pl. in. f. 2. Cyth. testi subovali, ventricos’, concentricé striata, albida, pallidé fulvo vel interruptim fusco radiata; latere antico brevi, subacuminato, lunulé magni, subcomplanata, distincté, ad um- bones purpureo unipunctat’; latere postico vix quadrato; aref dorsali maculata, subcarinaté ; margine ventrali rotundato. Shell oval, ventricose, concentrically striated, whitish, with either pale-brownish rays or else sharp angular bright-reddish 640 spots in rays; anterior side rather acuminated, with the lunule distinct, rather flat, and having a bright-purple spot close to the umbones; posterior side with the dorsal margin sloped, and presenting a variegated area enclosed by a scarcely elevated keel. Locality unknown. Mus. Hanley. 96. CyrHerma BULLATA (pl. exxxvi. f. 192), Sowerby, jun. Cyth. testa oblongo-subquadrata, alba, tenui, concentricé sub- striata, ventricos’; umbonibus inflatis ; latere antico brevé sub- acuminato, superné subexcavato, lunulad distinct’; latere postico quadrato, subangulato, margine dorsali declivi, margine ventrali rectiusculo. Shell white, oblong, ventricose, thin, smooth, with the um- bones large and inflated; the front side small and almost acumi- nated ; the hinder side somewhat quadrate and angular; the ventral edge rather straight, and the dorsal edge sloped. Locality unknown. Mus. Sowerby. 97. CytHerma Vennriana (pl.cxxxvi. f. 197,198, 199), La- marck, Anim. s. vert. Cyth. no. 35. Cyth. testa subovali, ventricosa, levi, albidd, fusco varié picta; lunulé et ared dorsali rubro maculatis ; latere antico brevi, lunula distinctaé ; latere postico subdeclivi, subrotundato. Shell of a rather short oval form, very ventricose, smooth, whitish, variously marked with brown; the anterior side short, with the lunule defined, reddish, and covered with reddish- brown markings; dorsal margin sloped, with a reddish area marked with reddish-brown. Mediterranean. 98. CyrHEr#a LimaTuLa (pl. exxxvi. f. 200, 201), Sowerby, junior. Cyth. test& oblong’, subventricosi, politi, pallidé lute’, maculis fuscis angulatis seriatim positis hine et hine radiata; latere antico brevi, lunuld distincté, partim fusco pict; latere postico sub- quadrato; area dorsali fusco pict’; margine ventrali rectiusculo. Shell more quadrate than C. Venetiana, with the ventral margin nearly straight, a peculiar smoothness of surface, with very dark chestnut-brown on the dorsal area and also covering part of the lunule with a ragged edge. Locality unknown. Mus. Hanley. 641. 99. CyrHeraa FULMINATA (pl. exxxin. f. 137), Valenciennes, Enc. Méth. t. 268. f.2; Phedippr, Abbild. t. 111. f. 4. Cyth. “test& subrhombed, eequilater’, alba, radiis fasciisque ziczacformibus interruptis rufis picti; area nulli; lunuld foveolé cincté; dente cardinali postico striato.” From the figure, and the worn specimen in the British Museum, it appears to be rather trigonal and equilateral, but with the ventral margin much rounded and bulging. The rays are in- terrupted and of a reddish-brown colour. Locality not known. 100. Cyruzrza Hesraa (pl. exxxiv. f. 143, 144, 148), Lamarck, Anim. s. vert. Cyth. no. 80. Delessert, Recueil, t. 8. f. 3. Cyth. testa crassi, subovali, ventricosi, omnino subundulatim concentricé sulcata, albé, lineis angulatis et undulatis fasciatim radiata, intis laté fusco-nigrescente pict’; umbonibus prominulis ; latere postico declivi, subacuminato, margine dorsali subtumido ; latere antico breviusculo, rotundato, margine ventrali rotundato. Shell rather thick, oval, ventricose, with the posterior side acuminated and the umbones elevated, sulcated, white, radiated with angular and undulated brown lines, m some instances clustered in bands; ventral edge rounded. A broad band of dark blackish or purplish brown occupies the centre of the interior. Ticao, Philippines; Cuming. The large specimen figured is in the collection of Mr. Gubba. 101. Cyruzr#a sutcatina (pl. exxxiv. f. 145, 146), La- marck, Anim. s. vert. Cyth. no. 29. Cyth. testi C. Hebrae simili, sed medio levigata, intis alba, extiis radiatim et concentricé fasciati, vel omnino nigrescente- castanea, anticé albo radiata. This shell is smooth excepting at the sides, whereas C. Hebraa is grooved all over; it is white or gently tinged with yellow inside. One variety is rayed with brown bands connected by undulating lines and bands in the opposite direction ; the other is of a deep chestnut-brown all over, excepting at the anterior side, where it has several whitish rays. Philippines. Cuming. 102. Cyrumra#a trimacutata (pl. exxxiv. f. 147), Lamarck, Anim, s. vert. Cyth. no. 41. Cyth. testa omnino sulcaté ut in C. Hebred, postics magis 4 0 642 rotundatad, albidd, castaneo radiati; lunul& et ared dorsali pur- pureis ; inttis sub umbones et ad impressiones laterales purpureo trimaculata. The hinder side is not quite so acuminated as in C. Hebrea, and inside there are three broad purplish spots in each valve, one under the umbones, and one covering each lateral muscular im- pression. The dorsal area and lunule are both tinged with purplish-brown. Pasacao and Catbalonga, Island of Samar, Philippines. Cuming. 103. CyrHEerma castrensis (pl. exxxiv. f. 151, 152, 153, 154), Linneus (Venus castrensis). Var. Venus australis et Venus Lorenziana, Chemun. Cyth. testé crassi, rotundati, subdepressi, levi, ad latera concentricé subsulcati; albidd, lineis vel maculis angulatis plus minus suffusis picté, nonnunquam griseo nebulata; latere antico breviusculo, rotundato, lunulé distincta, subtumida; latere postico subquadrato; umbonibus et margine dorsali elevatis ; intus palli impressione integra. Shell thick, flattish, rounded, smooth, shghtly grooved at the sides, particularly the anterior; whitish, with angular lines or spots more or less spread, and sometimes with greyish cloudy colouring ; anterior side rather the shorter ; the upper part rather excavated, and the lunule tumid; posterior side rather squared, with the umbones and dorsal margin rather raised ; no sinus in the pallial impression. “ Indian Ocean,” Lamarck. Vig. 158, 154 are from specimens brought by Mr. Cuming from the Philippine Islands; fig. 153, from Mr. Gubba’s collection, may be taken to represent the Australian variety. 104. CyrHerma ornata (pl. cxxxiv. f. 149), Lamarck, Anim. s. vert. Cyth. no. 82. Var. C. picta, Lamarck, no. 33. V. castrensis, var., nonnul. Cyth. testa C. castrensi simili, sed magis obliqua, posticé sub- acuminata ; lineis elongatis, suffusis, et obliquis; sulcis nullis. Shell more oblique than C. castrensis, quite smooth, the hinder part more sloping and acuminated, the colouring in lines spread at one side and very obliquely angulated. Philippines. Cuming. 105. CyrHeR#A HIEROGLYPHICA (pl. exxxiv. f. 150), Conrad, 643 Journ. A. N.S. Phil. vol. vii. p. 253. t. 19. f. 22. Phelipm, Abbild. Cyth. t. 3. £. 4. Hanley, Sp. of Shells, p. 104. Cyth. test C. castrensi simili, sed magis ovali; latere postico magis elongato, subquadrato, margine ventrali magis rotundato ; maculis parvis, angulatim dispositis. Shell much more oval than C. castrensis, with the hinder side longer and the ventral margin more bulging. ‘The spots are small, arranged so as to form angular lines. Sandwich Islands. 106. Cyrnerma rasticiata (pl. cxxxv. f. 158, 159), Sowerby, jun. Cyth. test C. castrensi simili, sed ovali, posticé attenuata, subacuminataé ; umbonibus parvulis; lunuld subcomplanata, griseo angulatim variegata. Shell more oval than C. castrensis, and with the dorsal margin much less sloped than C. ¢igrina ; the umbones are much smaller than in the former, with the lunule rather flatter; the colouring is arranged in large angles, either linear or broad, greyish-brown. Sydney ; Jukes. Cabinets of Cuming and Sowerby. 107. CyTHEerma TIGRINA (pl. exxxv. f. 155, 156, 157), La- marck, Anim. s. vert. Cyth. no. 34. -V. castrensis, V. picta, et V. ornata, var., nonnwd. Cyth. testa crassi, subovali, ventricosi, medio levi, ad latera et marginem ventralem undulatim sulcaté ; umbonibus prominulis ; lunulaé subcomplanataé; margine dorsali declivi; latere antico brevi, rotundato; latere antico subattenuato, ad terminum sub- quadrato ; colore intis croceo, extus albido, fusco-rubescente an- gulatim varié disposito. Shell thick, rather oval, ventricose, smooth in the middle, but grooved at the sides and towards the ventral margin; whitish, with various markings of dark reddish-brown placed angularly ; dorsal margins much sloped ; posterior side rather attenuated and squarish at the end. All the specimens have a tinge of yellow inside, and var. fig. 155 has also a good deal of purplish-black near the edge. Catbalonga, Island of Samar, Philippines. Cuming. 108. Cyruer#a Arasica (pl. cxxxv. f. 165, 166, 168), Chemn. Conch. f. 1968-70. Cyth. testa ovali, subquadrata, subdepressd, obtusé subundulatim 644. sulcata, albida, fasciis stramineis et punctis rubris, vel grisea, ma- culis rubescentibus seriatim dispositis biradiata, vel aurantiaca, fulvo radiata ; inttis purpureo et aurantio varie pict’; latere an- tico brevi, declivi, lunuli subdistincté ; latere postico oblongo, quadrato, margine dorsali paululum declivi, ad ligamentum vix recedente. Shell oblong-oval, rather squared posteriorly, with fine, blunt, not quite continuous sulci, various in colouring, generally speckled and radiated, and painted within with orange and purple; anterior side very short and sloping, with the lunule not very distinct ; posterior dorsal margin full up to the ligament. Red Sea. Varieties, fig. 165, Mr. Cuming’s collection, fig. 166 and 168, Mr. Gubba’s. 109. Cyrumraa Lenticrnosa (pl. cxxxv. f. 160, 161, 162), Chemnitz, Conch. f. 1963, 1964. C. Pfeitferi, Philippi, Abbild. te Patol. Cyth. testé ovali, subventricosi, cbtusissimé concentricé sul- cata, sulcis subundulatis, fuscd, vel pallidé fulva, grisescente, ma- culis et lineis nigrescentibus praecipué ad margines picté, ad um- bones purpurascente, intus griseo nebulaté ; umbonibus obtusis ; lunulé subcomplanata ; area dorsali excavata. The grooves are more obtuse and less numerous than in C. Ara- bica; the shell is more oval, the umbones not quite so prominent, and the dorsal area is holiow. The colour is brown or yellowish, tinted with purplish-grey, particularly inside and at the umbones ; at the edges all round there are diverging lines composed of blackish spots. Red Sea. 110. Cyrnpraa ABBREVIATA (pl. exxxv.f.170,171), Lamarck, Anim. s. vert. Cyth. no. 62; Delessert, Recueil Choisi, t. 9. f. 1. Cyth. testa C. Arabica simili, sed breviore, anticé quadrata ; sulcis acutiusculis, magis distantibus, integris, continuis. In the two rather different-looking shells which we figure under this name, the back part is much shorter and more square than in C. Arabica: this might be accidental, but the grooves are also more distant and sharp, and all continuous. Indian Ocean, Lamarck. Var. fig. 170, Mr. Sowerby’s speci- men ; fig. 171, Mr. Gubba’s. 111. Cyruera@a suBeniirtica (pl. cxxxv. f. 169), Sowerby, Jun Cyth. testa ovali-rotundata, ventricosa, distanter concentrice sul- 645 cata, alb’'; maculis angulatis magnis sparsis fasciatim dispositis ; latere antico breviusculo, lunuld vix distinctai; latere postico ob- tusissimé subangulato; margine dorsali subdeclivi. Shell of a rounded-oval form, ventricose, white, with broad an- gulated large spots disposed in two or three bands; concentri- cally ribbed, the ribs distant and rather sharp. Locality unknown. Jus. Cuming. 112. Cyrner#a catyriea (pl. exxxv. f. 164), Born (Venus), Mus. Cas. t. 5. f. 1. Cyth. testi ovali-suboblonga, compressa, concentricé planulatim sulcata, alba, fusco angulatim pictai; latere antico brevi, lunuld distincté, angustata ; latere postico subelongato, margine dorsali subdeclivi. The identification of this shell is conjectural; but it closely resembles the figure quoted. It is of a rather lengthened ellip- tical form, flat, with flattish concentric ridges, which are less dis- tinct in the centre; white, with broad angular markings of red- dish-brown defined by strong lines. Locality unknown. Mus. Cuming. 118. Cyrnera@a ELEGANS (pl. exxxv. f. 163), Koch, Phi- lippi, Abbild. t. 1. f. 4. Cyth. testa ovali, levigata, partim concentricé sulcata, albido- grisescente, fusco-rufescente, maculis magnis, binis, suffusis, ra- diatim picta, ints purpureo ad margines pictd; latere postico subacuminato, margine dorsali subrotundato. Shell oval, smooth in the centre, but with slight ridges at the sides and near the ventral margin; of a mottled greyish colour, with two large, broad, radiating patches of rich reddish-brown ; in- side greyish-white, with touches of purplish-brown at the margins. Swan River. Jus. Cuming. 114, CyrHErma ELLIPTICcA (pl. cxxxv. f. 173, 174), Sowerby, jun. C.calypiga? Philippi, Abbild. t.9. f.1; non Born, t. 5. £1. Cyth. testa ovali, depressi, levigata, partim griseo-fulva, prope umbones purpurascente, ad marginem fulva, fusco angulatim pictaé; inttis albido-subcerulescente, ad margines fusci, in medio maculata ; latere antico concentricé sulcato ; latere postico longi- usculo, striato; margine dorsali subplanulato, nigro-punctato ; lunuld elongataé, parva, distincta. Shell oval, flattish, smooth in the centre, anteriorly grooved, 646 posteriorly substriated, curiously coloured near the umbones and inside with mottled grey and purple; in the centre of the outer surface of a dull bay; at the margin yellow, with brown angular markings. Locality unknown. Specimen in Mr. Cuming’s collection. 115. CyrHERma SPLENDENS (pl. cxxxv. f. 167), Sowerby, jun. Cyth. testa C. dentiginose simili, sed magis rotundaté ; margine dorsali vix excavato, margine ventrali subinflato; colore pallidé fulvo, griseo nebulato, maculis obliquis castancis suffusis utrinque variegato. The difference between this species and C. dentiginosa is more easily seen than described. This is rather more rounded, and fuller at the dorsal margin ; the colouring is a bright tortoise-shell, arranged in angular patches on each side, which join each other at intervals. The specimens, which are very beautiful, are in the collections of Mr. Gubba and Mr. Sowerby. ° LIST OF FIGURES IN PLATES CXXVII. TO CXXXVI. (The Figure after each name ts the number of the Species.) Puate CXXVII. Fig. Fig. 1-38. C. Crassatelloides, 1. 17. C. incerta, 18. 4, — dubia, 2. 18-22. — tripla, 6. 5. — virginea, 3. 23, 24. — Hanleyana, 16. 6. — ventricosa, 5. 25. — nitidula, 14, 7-9. — Damaoides, 4. 26. — iineata, 15. 10, 11. — bicolor, 19. a Hindsii, 8. 12. — undulata, 21. 28-31. — radiata, 9. 13. — planulata, 20. 32, — gracilior, 10. 14, — polita, 22. 33, 34. — compressa, 13. lie Dolabella, 23. 35. — intermedia, 12. 36. — Mactroides, 11. Prate CXXVIII. 37-39. — corbicula, 7. 16. — trigonella, 17. 40-42. — lusoria, 26. 647 Prats CXXIX. Piate CXXXII. Fig. Fig. 43, 44, 46. C. casta, 31. 97 dis. C. aurantia, 58. 45. C. ovum, 32. 98. — Chione, 59. 47. — formosa, 28. 99, 100. — concinna, 64. 48-50. — meretrix, 24. 101. — affinis, 62. 51, 52. — petechialis, 25. 102, 103. — tortuosa, 63. 53, 54. — zonaria, 29. 104-106. — circinata, 65. 55-58. — impudica, 30. 107. — cygnus, 66. 59-60. — morphina, 27. 108. — rosea, 68. 61. — lyrata, 33. 109. — brevispina, 71. 62. — argentina, 34. 110. — Dione, 67. _ 111. — lupinaria, 69. Puate CXXX. 112. — multispinosa, 70. 113-115. — striata, 87. 116. — subinflata, 88. 117, 118. — citrina, 86. 119. — conyexa, 90. 63-66. — umbonella, 37. 67. — purpurata, 36. 68. — nobilis, 35. 69. — erycina, 38. 70, 71. — costata, 40. 12. — festiva, 47. Prats CXXXIII. 73. — pulchra, 43. 120. — trigona, 74. 74. — lilacina, 49. 121. — albina, 73. 75. — pectoralis, 48. 122. — rostrata, 75. 76. — multiradiata, 39. 123, 124. — leta, 84. 125, 126. — obliquata, 85. Prats CXXXI. 127, 128. — inflata, 89. 129-182. — Kingii, 92*. 133, 134. — inconspicua, 92. 135. — pallescens, 91. 136. — subpellucida, 94. 137. — fulminata, 99. 138, 139. — varians, 95. 140-142. — pannosa, 82. 77. — impar, 46. 78, 79. — spathulata, 45. 80, 81. — Sinensis, 44. 82. — semisulcata, 42. 83, 84. — obesa, 50. 85. — erycinella, 41. 86. — gigantea, 57. 87-89. — squalida, 61*. 90, 91. — unicolor, 61. 93, 94. — maculata, 60. 143, 144. — Hebrea, 100. 95, 96. — vulnerata, 72. 145, 146. — sulcatina, 101. 97. — maculata, 60. | 147. — trimaculata, 102. Puate CXXXIV. 648 Fig. Piate CXXXVI. 148. C. Hebraea, 100. Fig. 149. — ornata, 104. 175. C. piperita, 51. 150. — hieroglyphica, 105. 176. — Philppinarum, 52. 151-154. — castrensis, 103. 177. — multistriata, 56. 178. — acuminata, 75*. 179. — indecora, 78. Prats CXXXY. 180, 18]. — Manille, 77. 155-157. — tigrina, 107. 182, 183. — simplex, 54. 158, 159. — fastigiata, 106. 184. — modesta, 55. 160-162. — lentiginosa, 109. 185, 186. — fluctuata, 79. 163. — elegans, 113. 187. —- albocincta, 83. 164. — calypiga, 112. 188. — Belcheri, 80. 165, 166. — Arabica, 108. 189. — angulifera, 81. 167. — splendens, 115. 190. — pellucida, 93. 168, — Arabica, var., 108. 191. — Tellinoides, 76. 169. — subelliptica, 111. 192. — bullata, 96. 170, 171. — abbreviata, 110. 193-196. — florida, 53. 173, 174. — elliptica, 114. 197-199. —- Venetiana, 97. 200, 201. — limatula, 98. MONOGRAPH OF THE GENUS CIRCE. Fam. Veneride. Char. Gen. Testa sequivalva, ineequilatera; umbonibus compla- natis, striis vel costellis divaricatim rugatis; lunula cordiformi, impressi, distincti ; ligamento in aream foveolatam sub marginem dorsalem instructo; cardine lato, dentibus cardinalibus divergen- tibus, quorum mediano striato, et dente laterali uno antico in utraque valvi posito; impressionibus muscularibus duabus, late- ralibus ; impressione pallu integra. 649 The dentition and general characters of this genus are the same as those of Cytherea; but the peculiar flatness of the umbones, the total want of sinus in the pallial impression, and the diverg- ing tendency in the radiating striz or ribs, together, seem to separate this group from the rest of the Veneride. It must be observed, however, that these distinctions are not absolute. The flatness of the umbones is not apparent in a// the specimens of a// the species; the diverging striz or ribs are not visible in the little shell (which, nevertheless, we can find no place for anywhere else) named C. minima; and, with regard to the want of sinus in the pallial impression, universal in this genus, the same character is observed in numerous species of Cytherea and Venus; and not only so, but the passage from species with a distinct sinus to those without any is so gradual, that it would be impossible to rest a generic division upon that ground alone. The characters must be taken, with all their exceptions, in combination, and these shells, placed apart from the Cytherea, in the same case, appeal to the eye as presenting a very distinguishable group. Secr. I. Zesta ovalis, radiatum costata, varie fusco-rubescente angulatim picta. 1. Circe protinata (pl. cxxxvi. f. 1, 2,3). Venus pecti- nata, Linn. Syst. Nat. p. 1135. Cir. testi oblonga, plerumque subcompressi, postice sub- quadraté; costis nodulosis numerosis, posticé divaricatis, tum gradatim radiantibus, antice divaricatis ; margine dorsali exca- vato; variat costis magnis. The ribs are numerous at the back, very diverging and bifur- cated, then at the angle gradually becoming more entire and radiating, and at the front side very diverging again; the dorsal margin is decidedly excavated. Var. fig. 3 has the ribs as coarse as in the next species, but the long ones near the posterior angle do not quite reach the apex. Indian Ocean ; Lamarck. Philippines ; Cuming. Also, Red Sea. 2. Crrce erpsia (pl. cxxxvii. f. 4, 5, 6,7). Cytherzea gibba, Lamarck, no. 64. C.ranella, Lamarck, no. 65, inclusa. Cir. testé subovali, altiore, atate ventricosi, posticé oblique quadraté; ared distinctd, subtrigond, divaricatim costatd, tum costis noduliferis duabus aut tribus magnis radiantibus, ad umbones extensis ; medio et anticé costis noduliferis, magnis, bifurcatis. 4p? 650 Shell always deeper from apex to ventral margin than the last species ; a distinct posterior area, with beaded ribs very diverging, then two or three broad beaded ribs, with distinct intervals reach- ing from top to bottom; the rest of the ribs rather smaller, bi- furcated, and at the anterior side very diverging. Philippine Islands ; Cuming. Also Red Sea. 3. Circe prvaricata (pl. exxxvii. f. 8, 9), Gmelin. Cir. test’ subelongata, depressi, posticé subacuminati ; costis vix noduliferis, numerosis, posticé obliquis, medio radiatis, prope angulum posticum acutangulatim confluentibus. Shell like C. pectinata, but more oblique and acuminated pos- teriorly, and the ribs, which are small and comparatively smooth, unite more gradually and obliquely near the posterior angle. The colouring is arranged in broad angular patches rising over each other, and forming grotesque figures. Fig. 9 a, the ribs form a series of acute angles at their posterior confluence; Mr. Sowerby’s specimen. Red Sea. Mozambique; Hanley. Philippines; Cuming. 4. Circe mquivoca (pl. cxxxvu. f. 12, 13, 14, 15), Chem- nite (Venus), f.1980. Cytherea testudinalis, Lamarck, no. 67. Var. C. placunanella, Lamarck, no. 69. C. cuneata, C. mixta, Lamarck? Cir. test plerumque altd, posticé subobliqua, anticé concen- tricé subsulcaté; costis parvulis, numerosis, in medio acutangu- latim divaricatis ; colore nonnunquam ad margines lineari. The ribs are generally finer than in the other species, the posterior and anterior ones meeting in very acute angles near the middle of the shell. Red Sea. 5. Crrce pispar (pl. cxxxvu. f. 10, 11), Chemmnitz, vol. xi. t. 202. f. 1981, 1982. Cytherea muscaria, Lamarck, no. 59. Cyth. pulicaria, Lamarck, no. 60. Cir. testa rubro-punctaté et angulatim variegata ; posticé costis divaricatis, anticé concentricis. In some of the flatter varieties of the preceding species the anterior rays are so crossed by concentric lines, that it is not easy 651 to say which predominate ; yet the rays are there. In this species there are no traces of them, but in the hinder part of the shell they are strong and oblique, while in the front part there are only concentric ribs. The colouring is arranged in pinkish spots. Locality uncertain. 6. Cron australis (pl. cxxxvi. £.16, 17), Sowerby, jun. Cir. posticé subquadrata, costulis divergentibus, prope margi- nem anticum costulis divergentibus brevibus, in medio costis angularibus concentricis ; colore pallidé fulvo, lineis divergentibus et maculis fuscis ; intts purpurascente-fusco nebulato, ad mar- ginem nigro-punctato. Shell with diverging ribs and black lines at the back, concen- tric ridges in the middle, and diverging short ribs near the an- terior margin; colour pale brown inside, clouded with purplish- brown, with black spots at the edges. North-eastern Australia. Suot. 2. Testa rotundata, compressa, prope umbones et ad latera divergenti-costata vel striata, varie fusco angulatim picta, lunuld distinctd. 7. Circe sorrpta (pl. cxxxix. f. 38, 39, 40, 41, 42, 43). Venus scripta, Linn., Syst. Nat. p.1135. Var. C. violacea, Schum. Cir. test’ compressa ; costis concentricis numerosis ; margine dorsali_rectiusculo, elevato, subcomplanato; lunula distincta; costulis divergentibus, prope umbones indistinctis. Shell rather flat, with the hinder part broad and square; dorsal edge straight and elevated; concentric ribs numerous, particu- larly at the back ; diverging rays near the umbones scarcely per- ceptible. Red Sea and Australia. 8. Circe unpatina (pl. cxxxviil. f. 22, 23, 24, 25, 26). Cy- thereea undatina, Lamarck, no. 56. Cir. testa C. scripte simili, sed magis ventricosd ; margine dor- sali subarcuato, declivi; costis majoribus, rotundatis. Shell more ventricose than C. serzpta, the dorsal margin more rounded and sloped downwards ; the ribs generally larger. Varia- tions in colouring the same. Red Sea and Australia. 652 9. Circe NuMMULINA (pl. cxxxvii. f.27). Cytherea num- mulina, Lamarck, no. 58. Cir. testa C. seripta seu C. undatine simili, sed costulis diver- gentibus omnino radiata. This may possibly be a mere variety of the preceding, with the diverging rays spread nearly all over the shell. Locality unknown. Mus. Cuming. 10. Crrcz tumpracta (pl. cxxxviii. f. 28, 29, 80), Sowerby, Jun. Cir. testé subventricosi, subobliqua, marginibus medio subro- tundatis, prope umbones inflata, leviter divaricatim costata; mar- gine dorsali declivi, subcomplanato ; lunuli complanati ; colore albido, plerumque rufo-scripto. Shell a little more oblique and ventricose than C. wndatina, with a greater tendency to swell near the umbones, which are slightly ribbed. Locality unknown. 11. Crrce pricatina (pl. exxxvii. f. 31, 32). Cytherea plicatina, Lamarck, no. 71. Cir. test subventricosi, subobliqué ; marginibus subrotundatis ; costis concentricis magnis, nitentibus, subcomplanatis ; lateribus prope umbones divaricatim costatis. Shell shaped like C. ¢umefacta, but with the concentric ribs broad, shining, and a little flattened. Indian Ocean and New Holland. 12. Crrce rivuLaris (pl. cxxxix. f.46, 47, 48), Menke, q Cir. testa complanata, alti, supernée subangustata, albd, rubes- cente, vel pallidé luted vel fusco laté radiati, intus rosed ; mar- gine dorsali declivi, crenulato ; costis distantibus, irregularibus, interstitiis complanatis. Shell flat, high, rather narrow towards the umbones, pinkish- white, or yellowish, or pale brown with broad suffused radiating bands of brown, pinkish within, ribs distant, with flattish inter- vals ; lunule and dorsal area flattened, marked and crenulated by the few diverging ribs near the umbones. New Holland and Rain’s Island. Captain Ince, R.N. 13. Crrce rucirera (pl. exxxix. f.44, 45). Cythereea ru- gosa, Lamarck, no.70. Venus corrugata, Dillwyn. Cir. test&é subcomplanata, posticé subangulata, polita, prope 653 umbones rugulosi, grisescente-fulvé, minuté lineis rubris omnino script’ ; posticeé subquadraté; marginibus dorsalibus declivibus, rubris ; costis elevatis, distinctis, posticé subangulatis. Shell rather flattish, squarish at the back, smooth, strongly roughened near the umbones by the diverging and undulating ribs; of a greyish-white or pale buff, marked with minute an- gular reddish lines; dorsal margins flattened, red; ribs large, deep cut, with distinct intervals, angular at the back. New Holland; Lamarck. Mr. Gabba, Mr. Hanley, and Mr. Sowerby possess specimens. 14. Crece crocza (pl. xlix. f.49,50, 51,52), Gray, in Analyst, 1838. Cir. testa obliqua, forma variante, marginibus rotundatis, albida, epidermide lute’ induta, nonnunquam fusco prope umbones bi- radiatim picti, intis luted, anticé concentricé sulcati, posticé levi- gat; umbonibus divaricatim rugatis; lunula et ared dorsali sub- purpureis. Shell oblique, rather rounded, variable in thickness, white, with a light yellowish epidermis, sometimes with two chestnut bands radiating a short distance from the umbones; within, yellowish in the centre; outside, concentrically striated near the umbones, and from the front to the middle of the shell; smooth at the back; dorsal margin full, tinged with dull purple; lunule also tinged with the same colour. Red Sea. In the cabinets of Mr. Gubba and Mr. Cuming. 15. Circe presysa (pl. exxxvii. f. 33, 34, 35, 36, 37), Hanley (Cythereea), Wood’s Suppl. pl. 15. f.37. Cyth. erythraa, Jonas, Philippi, Abbild. pl. ix. f. 2. Cir. test obliqué rotundata, lenticulari, minuté concentricé striata, albidd, fulvo literata, vel fuscd, vel fusco variegata; area dorsali et lunuld minute divaricatim striatis. Shell rather round, lenticular, concentrically striated, whitish, sprinkled or lettered, or entirely covered with brown; within, pinkish or purplish brown; posterior and anterior dorsal margins short, generally dark brown or spotted, minutely striated with raised diverging lines. New Batavia. Philippi. 16. Crrce minima (pl. exxxvii. f. 18, 19, 20,21). Venus minima, Montagu, Test. Brit. p. 121. pl. 3. £..3; Turton, Dill- 654 wyn, &c. Venus triangularis, Mont., Test. Brit. p. 577. Cyprina minima, Cyprina triangularis, Zwrton. Cythereea apicalis, Philippi, Moll. Sicil. vol. i. p. 40, pl. 4. f. 5. Cytheraea Cyrilli, Philippi, Moll. Sicil. vol. 1. p. 32. Cythereea minuta, Brown, IIlustr. Conch. p. 92. pl. 37. f. 4. Cir. test parva, lenticulari vel subtrigond, concentricé striata, vari picta. This small species varies considerably in form, as well as in the fineness of the concentric striz or ribs. From the entire absence of diverging lines near the umbones, its place in this genus is doubtful ; but from its entire resemblance in all other respects to shells of the second section, we follow King, Hanley, &c., in placing it here. South of Great Britain, and in the Mediterranean. LIST OF FIGURES IN PLATES CXXXVII. TO CXXXIX. (The Figure after each name is the number of the Species.) Puate CXXXVII. Fig. Fig. 27. C. nummulina, 9. 1-3. C. pectinata, 1. 28-30. — tumefacta, 10. 4—7. — gibbia, 2, 31, 32. — plicatina, 11. 8, 9. — divaricata, 3. 33-37. — plebeja, 15. 10, 11. — dispar, 5. 12-15. — equivoca, 4. Puars CXXXIX. 16, 17. — australis, 6. 38-43. — scripta, 7. Prats CXXXVIII. 44, 45. — rugifera, 13. 18-21. — minima, 16. 46-48. — rivularis, 12. 22-26. —— undatina, 8. 49-52. —— crocea, 14. MONOGRAPH OF THE GENUS ARTEMIS. Fam. Veneride. Char. Gen. Testa eequivalvis, ineequilateralis, plus minusve or- bicularis, plerumque compressa, concentricé striata aut costellata, anticé prope umbones plerumque lunulata. Cardo fortis, subsepti- formis, dentibus tribus aut quatuor divergentibus ; ligamento elon- gato, partim interno. Impressiones musculares pyriformes ; im- pressio pallii sinu profundo acute trigono. The shells of this genus are easily distinguishable from Cy- therea, not only by their general form, which is lenticular, but by the deep angular sinus in the impression of the mantle, in- dicating a peculiarity in the animal. Nearly all the shells are of a white or light colour, and have concentric ridges or strie. Three species are found in Europe; a few in America, Australia, and North Africa; and the greater number in Japan, China, the Philippines, and other localities in the Kastern Seas. Sect. 1. Dorsal margin simple ; concentric ridges flat. 1. Arremis concentrica (pl. cxl. f. 1), Gmelin (Venus), Syst. Nat. p. 3286. Art. testi subrotundata, latiore quam alta, alba, epidermide pallidé stramined, concentricé sulcati, sulcis continuis; margine dorsali elevato, simplici; lunuld profunds excavata. Rounded, but wider than high; white, with a pale straw- coloured epidermis ; concentrically and continuously grooved, the interspaces being narrow and flat; no ligamental area; lunule deeply impressed. Porto Portrero, Central America. Cuming. 2. ARTEMIS DIsTANS (pl. cx]. f.3), : Art. testi crass’, ventricosi, posticé expansi, alba, epidermide 4aQ 656 pallidé stramine’ induta, concentricé distanter sulcata, sulcis ad latera profundis paucioribus; margine dorsali elevato ; latere antico parvo; lunuld excavati, impressi. More ventricose than A. concentrica, with the anterior sides small, and the posterior side large ; the sulci very distant im the middle, and very deeply cut at the sides. Locality unknown. ‘There are several specimens in Mr. Cuming’s collection. 3. ARrEmMIs ponpDEROSA (pl. exl. f. 2), Gray, Analyst, 1838, vol. vi. p. 809. Cytherea gigantea, Sowerby, Philippi, Abbild. pln. tL, Art. testa subrotundati, crass, alb&, epidermide pallidé mi- tente induti, irregulariter concentricé sulcati, sulcis in medio evanidis; ligamento elongato; margine cardinali lato, crasso ; margine dorsali subelevato, simplici; lunulé planati, profundé impressa. More orbicular than A. concentrica, with the sulci worn out, as it were, in the middle and towards the ventral margin. Gulf of California ; sandy mud at low water. 4, Artemis NrveNs (pl. exl. f. 11), Reeve, Conch. Icon. Ar- ¢emis, pl. ut. f. 12. A. concentrica, var. ? Hd. Art. test’ subrotundata, paulultm latiore quam alti, alba, epi- dermide tenui nitente indutd, regulariter concentricé sulcatd ; ared hgamenti nulli; margine dorsali subdeclivi. Smaller, when full-grown, and rounder than A. gigantea, with the sulci smaller, more regular, and more continuous. It is not easily distinguishable from A. concentrica, but its dorsal edge is not quite so much raised. Locality unknown. In Mr. Cuming’s collection. 5. Arremts tnetsa (pl. exl. f. 7), Reeve, Conch. Icon. pl. i. jel Art. testa 4. Patagonice simili, sed magis rotundata, prope um- bones magis compressa. If there be a real difference between this species and 4. Pata- gonica, it will be found in the greater roundness of outline and the want of fullness and prominence of the shell at and about the beaks. North Australia. Jukes. 657 6. Artemis Pataconica (pl exl. f. 8), Philippi (Cytherwa), Abbild. pli. f. 1. Art. testé subquadratim rotundata, subcompressa, albida, epi- dermide tenui induti, concentricé sulcata ; margine dorsal sim- plici, parum arcuati; umbonibus amplioribus, lateralibus. Not so wide in proportion to its height as A. ponderosa and A. concentrica, but of a rather more obliquely square form, with the umboes very lateral and full. Patagonia. Philippi. 7. Arremis Dunxert (pl. exl. f.5), Plitippi (Cytherea) Abbild. Cyth. pl. i. £.5 Art. test’ rotundata, vix latiore quam alta, alba’, epidermide pallidé induti, concentricé sulcata, sulcis continuis, in medio sub- distantibus ; margine dorsali declivi; lunulé excavata. Higher than A. concentrica, with the dorsal margin more sloping, and the lunule not so deeply excavated. St. Hlena and Panama, Central America; sandy mud at low i 3 d water. Cuming. 8. ArremMis SIMPLEX (pl. exl. f. 6), Hanley, Cat. Recent Shells, pl. xv. f. 41. Art. testa oblique altiore quam lati, albé, epidermide tenui in- duta, concentrice sulcata, sulcis numerosis, eequalibus, continuis ; margine dorsali obliquo ; lunuld impressi, vix excavata. More obliquely elevated at the umboes (which are lateral), than any of the group beginnmg with 4. concentrica, with the dorsal margin more sloping, Pand the g grooves more numerous and regular than 4. Dunkeri. “Locality unknown. 9. ARTEMIS CONCINNA (pl. exl. f. 4), Sowerby, jun. Art. testi ovali, alba, concentricé tenué striati, latiore quam alti; epidermide tenui, nitente. More oval and with finer sulci than A. simplex and similar species. Locality unknown. 10. Arremts piscus (pl. exl. f. 9), Reeve, Conch. Icon. pl. ii. ilies Si Art. testi compressa, subquadrata, subtiliter striata, pallide fulva, prope marginem pallidissimé grisescente, omnino tenud in- 658 ciso-striata ; sulcis intermediis versus latera terminatis; margine dorsali simplici, subarcuato, margine postico rectiusculo; lunulé breviusculf ; epidermide cornea, fulva. Of a rather square form, very compressed, and with very finely cut striz; distinguishable at sight from the others of the group, by its squareness and flatness. America. 11. Artemis pLana (pl. exl. f. 10), Reeve, Conch. Icon. Ar- temas, pl. in. f. 18. Art. testi compressi, subquadrata, albi, epidermide induta, concentricé tenuissime striati, striis in medio obsoletis; area ligamenti simplici; lunuld suboblongd; umbonibus acutis. Like A. discus, flat and square, but with the striz so fine as to be scarcely perceptible and nearly obsolete in the middle. China. Srcr. 2. Dorsal margins simple; concentric ridges or strie raised. 12. Arremis pxotera (pl. exli. f. 12, 43, 14), Linneus (Venus), Syst. Nat. 12th edit. p. 1134. Cytherea exoleta, La- marck. Pectunculus capillaceus, Da Costa, Brit. Conch. p. 187. pl. sai. f.5. Cythersea sinuata, Zurton, Dith. Brit. pl. vni. f. 7 (figura solim). Art. test’ suborbiculari, compressi, etate ad latera subqua- drati, pallidé fulva, radiis et maculis angulatis rubescentibus nonnunquam varie picti, concentricé clevato-striata, striis subru- gosis subeequalibus ; margine dorsali simplici; are ligamenti in- distinctaé vel nulla; lunuli convexiusculdé, impressi; margine antico prope lunulam elevato. The shape is rather round, but when full-grown tending at the sides to square; the strie elevated, rather rough, but regular ; the dorsal edge simple, and on the front side raised towards the lunule. Some specimens are prettily variegated with brown mark- ings on broad pinkish rays, and some are beautifully tinted with rose-colour within. British and other European Seas. 13. Arremts Lincta (pl. exli. f. 16), Pulteney (Venus), Hut- chins Dorset, p. 34. Venus sinuata, Zurton, Conch. Dith. p. 242. Cythereea lincta, Lamarck. Art. testa pallidé fulva, subnitente, ventricosd, subrotundata ; 659 marginibus dorsalibus subdeclivibus, simplicibus ; area Lgamenti nulla; lineis elevatis concentricis ad latera paululiim elevatis, sublaminatis, creberrimis ; lunulé impressa. The dorsal edges are more sloping, the shell more ventricose, the concentric ridges more nearly lamimated at the sides, and more smooth near the umboes, than in 4. evo/eta. Great Britain, and Seas of Southern Europe. 14. Arremis scuupra (pl. exh. f. 15), Reeve, Conch. Icon. Artemis, pl. ix. f. 52. Art. testa orbiculari-subquadrataé, paulultin latiore quam alta, tumidiusculd, posticé expansd, albida, pallidé rubescente, strtis impressis radiantibus costellas concentricas decussantibus; costellis concentricis acutiusculis, crebris, ad latera (anticé praecipuc) lami- natis, undatis; margine dorsali elevato, simplici; lunulé oblong’, ampla, lamellatim rugosa. Rather more square and ventricose than 4. exo/eta, and differ- ing from any of its varieties in being decussated at the sides by impressed radiating strie crossing the concentric niblets, which are in that part laminated and undulated. Locality unknown. In Mr. Metcalfe’s cabinet. 15. Artemis ampuipesmorpes (pl. exli. f. 17,18, 19), Reeve, Conch. Icon. Artemis, pl. vii. f.48. A. radiata, Reeve, ib. pl. vin. f. 37 inclusa. Art. testi subquadratim orbiculari, posticé magna, subflexuosa ; margine dorsali elevato, simplici, concentrice rugoso-costellato ; costellis elevatis numerosis, subeequalibus ; pallidé rufescente, fusco-radiaté, prope umbones nonnunquam purpurascente; lu- nula subrotundaté, profundé impressi. I cannot separate the variety named 4. radiata from this, on account of the accidental contortion of some specimens ; both are remarkable for the expansion of the hinder part of the shell, and the character of the ribs, which differ from those of A. exoleta in being more distinct and raised. Mouth of the river Gambia, Western Africa; also island of Burias, Philippines; in coarse sand, at a depth of six fathoms. Cuming. 16. Arremis TRIGONA (pl. cxli. f. 29), Reeve, Conch. Icon. Artemis, sp. 42. Cytherea trigona (by error), Thes. Conch. part 12. 660 Art. testa subtrigona, lata, crassiusculé, alba, ferrugineo-tincta, concentricé irregulariter striati; are ligamenti simplici; lunulé amplissima, vix distinct. I think it is erroneous to place this species in the genus Cy- therea, for, notwithstanding its trigonal form, it has the essential characters of Artemis. It 1s mbbed, of a white colour, tinged with rusty-brown. The lunule is very broad and scarcely marked, and the area is simple. Red Sea. 17. Artemis suBtricona (pl. cxh. f. 21), Sowerby, jun. Art. testa albida, ten, subtrigond, tenué et confertim elevatim striata; ared ligamenti paululiim depressi; lunuli magna, levi- gata, vix distincta. Rather white, thin, of a subtrigonal form, with very fine, close, concentric riblets. The lunule is large, circumscribed by a faintly impressed line. The lhgamental area not very distinctly depressed. Locality unknown. In Mr. Sowerby’s collection. 18. Arremis tsocarpta (pl. exh. f. 29, 30), Dunker, Phil. Abbild. Cyth. p. 36. pl. vin. f. 5. Art. test& glauca, violaceo-tincta, alti, cordata, gibbosd, con- centricé minuté et acute striata; arei lgamenti paululim exca- vati; lunulé cordaté, subimpressi. Variat fusco-maculata, mar- gines et lunula violaceis, mtts purpurea. Heart-shaped, narrow, and ventricose; greyish-buff, tinged with purple; finely, evenly, and sharply striated; lunule defined by a slightly depressed line ; lgamental area rather excavated. Guinea. 19. Arremis NaNus (pl. exh. f.31), Reeve, Conch. Icon. Ar- temis, pl. x. £. 57. Art. testi sordidé alba, subcordati, subgibbosi, concentricé costati, costis acutis, validis; ared ligamenti simplici; lunulé ampli, vix impressa. A small whitish shell, with the ridges very large in proportion to its size, and the lunule occupying a large part of the anterior side. here is no distinctly marked ligamental area. Locality unknown. In Mr. Cuming’s cabinet. 661 Sect. 3. Dorsal edge simple ; lunule expanded and indistinct. 20. Arremis Cutnensts (pl. exh. f. 23, 24), Chemnitz, (Venus), pl. 171. f. 1663. Cyprina tenuistria, Lamarch:. Art. testA obliqué subquadrata, inflata, concentricé irregulariter striatA, striis elevatiusculis, radiatim tenuistriaté ; umbonibus la- teralibus; margine dorsali elevato, simplici; lunulé nulla; mar- gine ventrali et laterali intis crenatis; fulva, nonnunquam pur- pureo-fasciata. This species has no distinctly-marked lunule. It is rather square and inflated, of a fawn-colour, beautifully banded with purple; the inner edge crenated. China; Korea. 21. ARTEMIS ORIENTALIS (pl. exliv. f. 79), Sowerby, gun. Art. test rotundata, ventricosd, concentrice et radiatim ad latera vix striata, pallidé aurantid, propé marginem ventralem rubes- cente; inttis margine crenato; lunula nulla. A fine specimen of this rounded, ventricose shell from Japan, has recently come into Mr. Cuming’s possession. It is much more round, smooth, and solid than 4. Chinensis. Japan. 22. ArTemis INFLATA (pl. exh. f. 25), Sowerby, jun. Art. test& subrotundata, alba, tenuissimé concentricé striata ; lunuld nulla, intts fulvi; margine levi. Like A. Chinensis, but rounder and without the crenulations on the inner edge. Locality unknown. 23. ARTEMIS TENUIS (pl. exh. f. 22), Sowerby, jun., Conch. Icon. Artemis, pl. ix. £. 53. Art. test inflata, tenui, alba, obliqué subquadrata, vix striata ; lunula nulla ; margine dorsali simplici, elevatd ; inttis margine levi. In form like A. Chinensis, but smooth, and without crenations on the inner edge. It is not so oval or sloping at the dorsal edge as A. inflata. Locality unknown. 24, Arremis suBquADRATA (pl. exli. f. 27), Hanley, Wood’s Ind. Test. Suppl. pl. xv. f. 39. Art. test& subquadrata, tenui, inflata, stramined, post medium 662 subangulatim inflat’é, concentricé minutissimé striati; ared liga- menti simpli; margine dorsali elevato; lunuli nullé; margine antico brevi. Large when full-grown, thin and inflated, rather angular to- wards the back of the shell. The anterior side is short, and there is no lunule. St. Elena, West Columbia, in sandy mud at low water; and Lobos Island, Peru, in sandy mud, from six to seven fathoms. Cuming. 25, ARTEMIS MACILENTA (pl. exli. f. 32), Reeve, Conch. Icon. Artemis, pl. ix. f. 51. Art. testé suborbiculari, obliqua, alba, tenui, compressa, levi- gata; lunula elongataé, mdistincta. Very thin, rather round, compressed, white, with the lunule scarcely defined. This may be the young of 4. swbquadrata. Sscr. 4. Dorsal margin depressed. 26, ARTEMIS PENICILLATA (pl. cxli. f. 28), Reeve, Conch. Icon. Artemis, pl. vi. f. 32. Art. test& subquadrati, compressi, alb&i vel fulva, rufescente, lineis radiantibus subimpressis fuscescentibus pallidé notati, con- centricé striati; striis elevatiusculis, ad latera validioribus ; mar- gine dorsali postico rectiusculo; area ligamenti simplicé depressi, lmeari; margine antico declivi; lunulé sublanceolati, leviter impressa. Rather square at the back, more round and sloping in front, compressed, white or brownish, with impressed irregularly diverging and radiating lines of colour. The ligamental area is represented by a simple linear depression, and the lunule is rather long and narrow. Locality unknown. In Mr. Cuming’s collection. 27. ARTEMIS ANGULOSA (pl. cxl. f. 26), Philippi, Abbild. Cytherea, pl. v. f. 1. A. longilunata, Reeve, Conch. Icon. pl. x. f.61. A. penicillata, var., Reeve, Conch. Icon. pl. vi. f. 36. Art. testa A. penicillate simili, sed magis compressa et quadra- tim expansi; lunuld peculiariter elongata. Flatter and broader than A. penicidlata, with the lunule more elongated. In Mr. Hanley’s collection. 663 28. Arremts Lunarts (pl. exlit. f. 33), Lamarck, Anim. sans vert. (Cytherea, no. 46). dn Venus lupinus, Poli? Art. test obliqué elevata, solidi, compressa, prope umbones polita, vix ad margines tenuissimé striata ; are’ ligamenti de- pressa, indistinct ; lunuld parva, impressi; wmbonibus oblique productis. The elevation of the upper part towards the anterior side gives a peculiar obliquity to this shell, which is nearly white, flat, and smooth, excepting at the edges, where very fine strive are just visible. The lunule is small; the ligamental area formed by a slight depression of the dorsal margin, which is much sloped. Gulf of Tarentum. 29. ARTEMIS FERRUGINEA (pl. cxlu. f. 384), Reeve, Conch. Icon. Artemis, pl. x. f. 56. Art. test& carneo-albidd, prope umbones subferrugined, solidé , suborbiculari, omnino regulariter concentrict minut’ striatf; area ligamenti depr ess; lunuld parva, profunde impressa. “Obliquely Tellineeform, with sloping edges, something like A. /u- naris, but wider in proportion, with the hinder part produced, Locality unknown. In Mr. Hanley’s collection. 30. Arreais mopesta (pl. exli. f. 37), Reeve, Conch. Icon. Artemis, pl. ix. f. 54. Art. testa suborbiculari, compress’, superné obliqué subelevata, sordidé alba, nitente, striis radiantibus obscurissimis notata, con- centricé minuté impresso-striaté; ared ligamenti angustatd, exca- vati; lunuli subobliquaé, impressa. Not so oblique nor so much produced at the upper part as A, lunaris, and having the ligamental area more excavated. Locality unknown. In Mr. Cuming’s collection. 31. Arremts HEpattca (pl. exli. £. 35, 36), Philippi, Abbild. Cytherea, pl. i. £. 8. Art. testA obliqué subquadraté, subcompressi, ceerulescente vel fulva, prope umbones rufescente et purpureo- -maculata, tenuissime striaté; lunulé vix impressi; ared dorsali partim planata. Not so inflated as A. Chinensis, and more finely striated, with a distinct although not prominent lunule; colour of a dull ashy-grey, darker near, and orange at, the nmbocs! The variety dh is of a light orange-colour, with large carulean spots near the umboes. Locality unknown. In Mr. Cuming’s cabinet. 32. ARTEMIS CHRULEA pl. exlu. f. 43, 44), Reeve, Conch. >] *) r] Icon. Artemis, pl. Tee Art. testi alba vel pallidé fulvi, ad umbones plus minusve fulvo et ceruleo nebulatd, state crassi, ventricosi, rotundata, posticé subangulaté, minute concentricé elevato-striatd ; lunula subovali, line impress’ circumscripta; ared dorsali sublaté de- press ; umbonibus leevigatis. When full-grown this shell is thick and full, with small, even, raised striae, except at the umboes, which are smaller, and the ligamental area formed by the simple depression of the dorsal edge. The colour is white or pale whitish-brown, with a tinge of orange clouded with dull blue about the umboes and upper margins. Rain’s Island, Torres Straits. Captain Ince. 38. ArTemis LuctnoipEs (pl. exli. f. 39), Reeve, Conch. Icon. Artemis, pl. vii. f. 45. Art. test albida, crass’, subangulatim rotundata, omnino mi- nuté striati; arei ligamenti angustatd, excavati; lunulé im- pressa. Resembling A. hepatica, but with no tendency to the purple patches of colour, and perhaps more coarsely striated. Guinea. Sams. 34, ARTEMIS SOLIDULA (pl. exli. f. 38), Sowerby, jun. Art. testa alba, solidd, concentricé striat&i; area dorsali de- 5] 3 ] pressa, subexcavata, declivi; lunula distincta, convexa. . ‘ 7 ao a - Resembling A. carulea, but much more sloping and less an gular at the dorsal edge. Locality unknown. In Mr. Cuming’s collection. Y, 8 35. ArTEMIs RuBICUNDA (pl. cxli. f. 40, 41, copied), Phz- lippi, Abbild. Cyth. t. vi. f. 5. Art. “testa parva, orbiculari, aurantio-rubente tenuissimé striata, fere levi; ared distincté nulli; lunuld convex4, cordata, lneolé impress’ partum conspicud egré circumscripta.” A pretty little red shell, from the Red Sea; it must very nearly resemble the two or three preceding. 665 36. ARTEMIS SERICBA (pl. exlu. f. 42), Reeve, Conch. Leon. Artemis, pl. vin. f. 36. Art. testA subovali, tenui, latiore quam alt4, concentrice tenuis- simé striati, stris vix ad latera elevatis ; ared hgamenti elongata, paulultim depress4 ; lunula ovali, impress’; colore prope umbones fulvo, ad margines grisescente. A rather oval shell, of a delicate fawn-colour at the umboes and towards the middle, but becoming greyish towards the mar- gin; the striz are so close and fine as to give a silky appearance to the surface, and are scarcely more raised close to the hinder edge, which is slightly angulated. This shell is rather more regularly oval, with the striz more equally raised throughout, than in the following species. Japan, Dr. Siebold ; and San Nicolas, island of Zebu, Philip- pines, Cuming. 37. Artemis compra (pl. exlu. f. 45), Loven, Index Mol- lusc. Scandinavie, p. 39. Artemis glauca, Reeve, Conch. Icon. pl. x. f. 58. Art. testa subovali, latiore quam alti, fulva, grisescente, con- centricé tenuissime striata, strus ad latera ereberrimé et lamina- tim elevatis; ared ligamenti depressi; lunuld impress. Of an oval form, differing from A. serzcea in the lateral eleva- tion of the strize. Philippines. Sect. 5. Dorsal margin with a defined area; generally ex- cavated. 8. Artemis Orsientt (pl. exli. f. 54), Duaker, Phil. Ab- bild. Cytherea, pl. vi. f. 3. Art. test’ subrotundata, solid, subcompressi, albidd, umbones versus lividd, concentricé striata, striis subdistantibus, elevatius- culis, regularibus, ad latera paucioribus, elevatis; ared ligamenti excavati, lanceolaté; lunulé subimpressa. Rather round, flattish, with raised, distant, concentric lines, some of which converge near the sides; the colour tends to livid or grey towards the umboes. The description by Philippi almost identifies this with 4. forrida of Reeve. Guinea, Sams. Mouth of the river Gaboon, Western Africa. 666 39. Anrremis TorripA (pl. exlu. f. 46), Reeve, Conch. Icon. Artemis, pl. x. £. 60. Art. test A. Orbignii simili, sed latiore ; are’ ligamenti haud tantum excavata, costellis ad latera vix elevatis. It is not unlike 4. Ordiginii, but it is not so high and the riblets not so much elevated and corrugated at the sides, Mouth of the river Gaboon, Western Africa, 40. Artemis Arricana (pl. exli. f. 48), Gray, Analyst, 1888. Dosin,” Adanson ? Art. testa pallidé fulvi, crass, obliqué elevatd, concentricé concinné subundulatim sulcata; sulcis ad latera elevatis, conver- gentibus, posticé ad marginem are lgamenti angulatim pro- ductis ; are’ ligamenti planulata, laté excavati; lunulaé distincta, profunda. Nearly white, sometimes tinged with delicate pink, obliquely elevated, with very sloping dorsal margins; the ligamental area excavated and flattened, and defined by the acutely produced ridges, which are elevated and convergent at the sides, and smooth and shining at the central disc. Senegal. 41. Arremis Grounert (pl. exli. f. 47), Philippi, Abbild. Cyth. pl. vii. f. 2. Art. testa pallidé fulvd, crassi, subelevata, concentricé validé sulcati; sulcis ad latera elevatis, convergentibus, posticé ad mar- ginem ares ligamenti angulatim ‘productis ; ; ared ligamenti planu- fata, late excavata ; lunuld distincta, validé impressa. Broader and coarser than 4. Africana, and not so obliquely elevated towards the umboes. China. 42. Arremis Apansont (pl. exlu. f. 52), Philippi, Abbild. Cyth. tu. £2. “ Dosin,” Adanson ? Art. testé albidd, versus umbones subrosed, suborbiculari, sub- compressa, concentrice minute striati, stris ad latus posticum angulatim elevatis, utrinque undulatim convergentibus ; margine dorsali subelevato; area ligamenti levi, lanceolata, subexcavata ; lunula parva, impressi. Rounder, flatter, and smoother than 4. Gruneri or A. Africana; ligamental area not so much excavated nor so distinctly defined. Senegal. 667 43, Arremis catcotus (pl. exli. f. 53), Reeve, Conch. Leon. Art, pl. vin. £. 47. Art. testi albido-fuscescente, tenui, compress’, concentrice tenuissimé striata; striis ad latera elevatiusculis, convergentibus ; are’ ligamenti subexcavata. Thin, whitish or light brown, very minutely striated, the striz elevated and converging at the sides; ligamental area not very distinctly marked by the edges of the concentric ridges. Catannan, island of Luzon, Philippmes; in fine sand at low water. Cuming. 44, Artemis Biscocta (pl. exli. f. 50), Reeve, Conch. Icon. Art, pl. ix. f. 55. Art. test& pallidé fulvi, suborbiculari, concentricé striata, stris asperis ad latera elevatiusculis convergentibus; ared ligamenti lanceolate excavaté ; lunulé impressa. Differing from the rest of the group in the sharp and rough character of the raised strive, which prevents the silkiness of appearance near the umboes, which may be observed in A. Afri- cana, ete. Japan. Stebold. 45. Arremis FrButa (pl. exli. f. 49), Reeve, Conch. Icon. Art. pl. v. £. 26. Art. testi lutescente-albi, alté, subcompressi, ad latera sub- angustati, concentricé creberrimé striati, striis ad latera vix ele- vatis, convergentibus; margine laterali antico elevato; lunuld profundissime impressé ; are’ ligamenti acute excavata, laevigata. “Principally remarkable for the depressed growth of the lu- nule,” otherwise resembling A. discocta. Mouth of the Gambia, Western Africa. 46, ARTEMIS CRETACEA (pl. exlii. f.51), Reeve, Conch. Icon. Art, pl. vi. f. 35. Art. testa A. discocte simili, sed striis concentricis validé tenui- oribus. There is a chalky appearance arising from the closely laminated strie of this shell, which distinguishes it from A. déscocta and others of the group. Manilla, island of Luzon, Philippines. Cuming. 47. Artemis tivipa (pl. exli. f. 55, copied), PAclippi, Ab- bild. Cyt. pl.v. f.4. A. Orbignn, var.? £7. Art. testa dA. Orbignii simili, sed magis compressa, posticé an- gulata, striis magis confertis, ad latera angulatim terminatis. It is not easy either to identify this species, or to distinguish from it A. aspera, Reeve, excepting in colour. It is like 4. Or- dignii In some respects, but is flatter, more angular, and with the striae more numerous and raised at the sides. Locality unknown. 48. Artemis aspera (pl. exli. f. 56), Reeve, Conch. Icon. Art. pl. ix. £. 49. Art. testi suborbiculari, tumida, pallidé fulva, concentricé striata, striis elevatis creberrimis, acutis, ad latera paucis elevati- usculis; ared ligamenti excavataé ; lunulé parva; umbonibus pro- minulis. Of a dull whitish-brown colour, very finely and sharply striated, with the striz slightly elevated at the sides, particularly at the edge of the ligamental area, which is peculiarly canaliculated, with the inner edges slightly raised ; the umboes are produced. Manilla; in sandy mud at low water. Cuming. 49. Arremis canaLicuLata (pl. exlii. f. 58), Sowerby, jun. Art. testa parvi, tumidd, sordidé alba, minutissimé striata, striis ad latera elevatiusculis; umbomibus prominentibus, acutis ; area ligamenti duplicata. Striated like 4. dzscocta and A. aspera, and remarkable for the canaliculated appearance given to the ligamental area by the ele- vation of the dorsal edges. Manilla, island of Luzon. Cuming. 50. ARTEMIS SCABRIUSCULA (pl. exli. f. 59), Philippi, Ab- bild. Cyth. pl. v. f. 2. Art. test suborbiculari, latiore quam alta, albidd, posticé sub- angulata, tenuissimé striata, striis ad latera acuté laminatis; ared ligamenti lata, excavaté, ad marginem serrata ; lunuld impressa. Rather transversely tending to oval, with numerous, close, very fine ridges, which, at the sides, are produced into lamine ending in points, so as to serrate the margin of the ligamental area, which is broad and excavated. Locality unknown. 669 51. Arremis Javonica (pl. exliii. f. 60), Reeve, Conch. Icon. Art, pl. wm. £17. Art. testi suborbiculari, paulultim latiore quam alti, albida, subcompressi, posticé superné subangulataé, concentricé minute costellaté, costellis ad latera paucioribus et clevatim laminatis. The sculpture is less fine and the dorsal part of the shell more elevated and angular than in A. scabriuscula; at the hinder side the laminze suddenly become few and broadly laminated. Japan. Dr. Siebold. 52. ARTEMIS sUBROSEA (pl. exlii. f. 61), Gray, Yates’ New Zealand, p. 309. Art. testa pallidé rosaceo-fulva, latiore quam alta, tenui, con- vexa, concentricé creberrimé elevatim striata, striis ad latera lami- natis minutissimis; ared lgamenti subexcavati, striati; lunuld ovali, impressa. Of a rather oval form, with very fine striae, which are so close at the umboes as to give a glossy appearance to the surface. This species differs from 4. Japonica and A. scabriuscula in having the strize as close at the sides as at the middle of the shell. New Zealand. 53. Artemis Sresoupit (pl. exlii. f. 57), Reeve, Conch. Icon. Art, pl. vii. £. 39. Art. testa fused, rotundatéi, convexd, concentricé tenuissimé liraté, liris anticé laminatis, posticé paucioribus, elevatiusculis, corrugatis; lunulé impressi; ared lgamenti latiusculd, vix ex- cavata, squamarum grandium serie marginata. Remarkable for the corrugated character of the ridges on a distinct portion of the posterior side, and for the row of large laminated scales, into which some of the ridges are expanded at the edge of the ligamental area. Japan. Dr. Siebold. In Mr. Cuming’s collection. 54. ARTEMIS corruGATA (pl. cxli. f. 63), Reeve, Conch. Icon. Art. pl. iv. f. 24. Art. testa suborbiculari, paululim latiore quam alta, tenu, convexa, sordidé albida, concentricé striata, striis in medio tenuis- simis, subobsoletis, ad latera (posticé preecipué) elevatis, crassius- culis, corrugatis et convergentibus ; striis radiantibus obsoletis ; ared ligamenti laminati, vix impressi; lunulé suboblonga, im- press. 670 Similar in form to dA. Japonica, ete., but very remarkable for the coarsely wrinkled character of the elevated riblets at the pos- terior side, compared to the almost obsolete and fine striz in the middle. Locality unknown. In Mr. Cuming’s collection. 55. ARTEMIS EXasPERATA (pl. exlin. f. 62), Philippi, Ab- bild. Cy¢d. pl. vin. f. 4. Art. testa subquadrata, albi, compressi, concentricé creberrimé costellat’i, costellis in medio levigatis, prope marginem et ad latera subcorrugatis, ad latera lamellatis et interruptim elevatis, ad marginem dorsalem in nodulos productis; areé ligamenti sub- excavata, striati; lunulé profundé impressi. White, a little squared at the sides; very finely ribbed, except at the sides, where the ribs are few, coarse, and wrinkled, a few of them being raised into nodules circumscribing the ligamental area. Bay of Manilla, island of Luzon, Philippines; in sandy mud. Cuming. 56. Arremis Brtunata (pl. cxliu. f. 66), Gray, Analyst, 1838, part 24, p. 309. Art. test& albidd, orbiculari-subtrigon4, versus umbones elevata, pallidé radiis roseis interruptis picta, concentricé tenuissimé striata, lineis ad latera mm squamas angulatas productis, posticé ad mar- ginem, antice post aream late distinctam et levigatam terminatis ; lunulé ovali, lined profundé circumscripté; ared lgamenti an- gustati, vix depress; umbonibus parvis, elevatis. The striz are very fine in the middle of the shell, but at the sides some of them are produced into angular lamine; at the front side these laminated points terminate in a radiating series before reaching the margin, so as to leave a broad, distinct, smooth area, which is separated from the true lunule by a deep groove. The shell is beautifully painted by radiating interrupted rays of pale pink. Japan. Dr. Scebold. 57. Arremis Cuminett (pl. exlin. f. 64), Reeve, Conch. Icon. Art. pl. v. f. 3. Art. testi subalbida, fusco radiaté et tinct’, subcompressi, ad latera subangulaté, tenuissimé striati, ad marginem dorsalem et 671 junule antice striis paucis, elevato-laminatis, m angulos parvos productis ; umbonibus parvis, arcuatis. In general form this resembles A. 4¢/wnulata, but it has not the anterior area or second lunule which characterizes that species. San Nicolas, island of Zebu, Philippines; in sandy mud. Cuming. 58. Arremis LAMELLATA (pl. exlii. f. 65), Reeve, Conch. Icon. Art. pl. in. f. 13. Art. testa subovali, subcompressi, alb’, prope umbones minuté striati, deinde lamellatéi; lamellis duplicatis, ad latera pauciori- bus, subelevatis; are’ ligamenti subexcavata, lamellaté; lunula lined profunda circumscripta. Remarkable for the duplicate character of the concentric la- mine. North Australia. Jukes. 59. Arvemis pupticata (pl. exli. f. 67), Reeve, Conch. Icon. Arf. pl. vi. f. 46. Art. testa tenui, albida, subcompressi, subovali, concentricé mi- nuté laminaté; laminis postice duplicatis, ad latera productis ; ared ligamenti ad marginem profundeé excavaté; lunuld lined distincti. Like A. damel/ata in having the ribs duplicate, but with the whole sculpture much finer. North Australia. Jukes. 60. ARTEMIS TENUILAMELLATA (pl. exlin. f. 68), Sowerdy, junior. Art. testa A. lamellate et A. duplicate simili, sed tenui, lamel- lis duplicatis tenuissimis, acutis. In this shell the lamelle are all thin and sharp. The shell is also thin and of an oval form. It bears « resemblance to 4. /a- mellata and A. duplicata of Reeve. Like A. lamellata, it has the canaliculated structure of the dorsal area, but the laminz are totally different. Locality unknown. In Mr, Sowerby’s collection. 61. Arremis uxctsa (pl. exli. f. 69), Chemnitz (Venus ex- cisa), Philippi, Abbild. Reeve, Conch. Icon. Art. testé subtrigona, crassiuscula, albida, concentricé subru- 4s 672 gosi, clevatim striati; ared ligamenti excavati; lunuld ampla, subobsoleta. White, with the shape rather tending to trigonal, with roughish riblets or raised strie ; ligamental area sharply excavated; lunule wide, rather indistinct. Nicobar Island. 62. Artemis conrusa (pl. exlii. f. 70), Reeve, Conch. Icon. Art. pl. vu. f. 38. Art. testa oblique subglohosi, crassi, albidi, umbones versus sublividi, concentricé costellata, costellis complanatis ; area liga- menti excavati, pland; lunula impress, lata. Whutish, clouded with dull blue near the umboes, rather thick, smooth, and obliyuely gibbous, concentrically ridged; the ridges rather broad and flat. The ligamental area angularly excavated, and smooth. Point Cunningham, North Australia. Dring. Snor. 6. Hdge of the dorsal area raised above the circum- scribing line. 63. Artemis ALATA (pl. exliv. f. 73), Reeve, Conch. Icon. pl. iv. f. 20. Art. test’ alba, subleevigati, alt’, plana, ad latus posticum sulco profundo alam formante radiatim divisa ; lunula suboblongé; umbonibus parvis, subarcuatis. A nearly smooth, white, flat shell, remarkable for a radiating groove at the hinder part, which separates a wing-shaped area from the rest. As this may be equivalent to the raised liga- mental areas in A. pubescens and A. striatissima, 1 place the species with them, although otherwise very unlike. Locality unknown. In Mr. Cuming’s collection. 64. ARTEMIS PUBESCENS (pl. exlii. f. 72), Philippi (Cy- therea), Abbild. t. 8. f. 3. Art. calata, Reeve, Conch. Icon. pl. v. sp. 28. Art. “ testa subquadrato-orbiculari, lacted, stris transversis con- ferlis, versus utramque extremitatem paucioribus et lamellaribus sculpt; lunuli cordata, compressa, lined profundissim’ circum- scripta ; aref lineari-lanceolata, lamellarum extremitatibus spinze- 673 formibus cinct’i; ligamento conspicuo, iterum lamellis spine- formibus circumdato.” White, rather squarish, and remarkable for a deeply-impressed line dividing off a portion of the dorsal edge; near this line the concentric ridges are laminated and produced into points. Catanuan, island of Luzon, Philippines; in fine sand at low water. Cuming. 65. Arremis srriavisstma (pl. exliv. f. 71-84), Sowerby, junior. Art. testi subrotundata, alba, radiatim minutissimé striata, concentricé costellaté; costellis parvis, subdistantibus ; margine dorsali lined impressi aream elevatam circumscribente ; lunulfé tumida, margine profundé impresso. More rounded than A. pudescens, with the concentric ridges more distant and less produced at the margins, and with fine ra- diating striz. It resembles that species in having a defined sup- plemental area. Locality unknown. In Mr. Cuming’s collection. Srcr. 7. Dorsal area laminated in one valve, smooth in the other. 66. Artemis ruFA (pl. exliv. f. 77), Lamarck (Cytherea), sp. 37. Art. test& rufa, varié albo-radiata et interrupta, rotundata, sub- ventricosa, crass, concentricé subplano-costatd ; costellis ad la- tera elevatiusculis: lunuli brevi, plana, impressd, dorso rotundato ; ared ligamenti striaté, plamiusculi, excavata. Rounded, rather ventricose, thick, concentrically ribbed; the ribs flattened in the middle and slightly elevated at the sides. Ligamental arca striated, rather flattened and hollowed out. Locality unknown. 67. ARTEMIS JUVENILIS (pl. exliv. f. 74, 75, 76), Gmelin (Venus), Syst. Nat. p. 3287. V. juvenis, Chemnitz. Art. testé alba, rufo laté interruptim et varié radiata, rotun- dati, compressi, coucentricé costati; costellis in medio planatis, ad latera paucis, laminatis, elevatis; lunulé brevi, impressd; area ligamenti angustata, striata, paululum excavata. The dorsal margin is less rounded than in 4. v/a; the shell 674 is flatter, and the concentric ridges, instead of being thickened, are raised and laminated at the sides. Bay of Manilla, isl. Luzon, Philippines; sandy mud. Cuming. 68. Arremis scaLanis (pl. exhv. f. 78), Menke (Cytherea), Moll. Nov. Holl. p. 42. no. 241. Art. testi rotundata, subcompress4, paululum latiore quam alta, albidé, rufo pallido plus minusve radiatim et interruptim picta, conceutricé costellata ; costellis 11 medio planatis, ad latera tenué laminatis et elevatis; luuulé brevi, impressd, excavata. Larger aud broader than A. yuvenilis, the colouring a more delicate fawn, and all the ribs continucd to the sides, where they are close and laminated. Mouth of the Swan River, New Holland. 69. Artemis anus (pl. exliv. f. 82), Philippi, Abbild. Cyth. pl. vii. f. 1. Art. testé subquadrato-orbiculari, subcoinpressa, crassi, con- centricé costellaté, pallidé fasciatim fulva, ad apicem rufescente ; costellis acutis, subirregularibus, ad latera paucis, elevato-lamina- tis, snbdivaricatis ; lunuli, profwndé impressd, lammaté; area liga- menti angulatim excavata, plana. Rather squarish at the sides, sharply costellated, with the ribs few, laminated and divergent at the sides, so as to give a wrinkled appearance. The ligamental area is flat and angularly excavated. New Zealand. Hart. 70. ArrEMis PRosTRATA (pl. exliv. f. 80), Linn. Syst. Nat. 12th edit. p. 1133. Art. testa obliqué quadraté, compressa, pallidé fulva, concen- tricé costellaté; costellis ad latera irregulariter ct interruptim convergentibus et corrugatis, ad marginem dorsalem elevatim sublamellosis ; arc igamenti subexcavati; lunula subelongata. Not very far removed from d. awus; it is much squarer and flatter, with the riblets more irregularly wrmkled and more ele- vated at the dorsal margin. Mouth of Swan River, New Holland. Collie. 71. Arremis Lamrinata (pl. exliv. f. 86, 87), Reeve, Conch. Icon. pl. vu. f. 41. Art. testa alba, orbiculari, concentricé laminataé; laminis sub- 675 distantibus, alternis, ad latera laté expansis, subreflexis; area ex- cavaté; lunula lined profunda circumscripta. Like A. juvenilis and A. scalaris, but with the ridges laminated ; some ending suddenly and others spread out into broad reflected lamine at the sides. Fig. 87 represents a much less broadly laminated variety. Island of Samar, Philippines. Cuming. 72. Artemis varircata (pl. exliv. f. 83), Gray, Analyst, 1838, vol. vii. p. 309. Venus exoleta variegata, Chemnitz. V. australis, Quoy e¢ Gaimard, Voy. Astr. Art. testa orbiculari, subventricosa, albidi, fusco-purpurascente, laté triradiaté, omnino rufo pallidé literati, intts purpureo-tincta, concentricé costellata; costellis subdistantibus, elevato-laminatis, ad latera paucioribus, acutiusculis ; ared ligamenti acuté excavata, valvee dextre laminati, alterd plana; lunula rotundata, impressa, purpurea. Rather orbicular and ventricose, beautifully variegated with purplish interrupted rays and spots, and having the ribs elevated, rather distant, elevated and laminated, thinner and fewer at the sides. Philippine Islands; Moluccas; Australia. 73. Artemis trrata (pl. exliv. f. 85), Sowerby, yun. A. variegata, var., Reeve, Conch. Icon. Art. f. 33 a. Art. test& suborbiculari, compress4, albidd, fusco radiatim lite- rata, concentricé costellis distantibus elevatis continuis lirata ; lunulé impressi, suboblongi; are’ ligamenti lineari, valve si- nistre plana, valvee dextree laminatia. Flatter than A. variegata, with the concentric ridges more dis- tant and continuous, and all traces of the purple colouring are lost, only pure brown angular markings remaining. This species looks so different from A. variegata that one is compelled to se- parate it notwithstanding the existence of intermediate varieties. Cagayan, isl. of Mindoro, Philippines. Cuming. 74. ARTEMIS LENTICULARIS (pl. cxliv. f. 81), Sowerby, jun. A. variegata, var., Reeve. Artemis, f. 296, 33. Art. testa lenticulari, compressa, pallidé fulva, fusco-radiata et literaté, concentricé confertim costellaté; area ligamenti vix ex- cavata ; lunulé impressa. 676 This species presents a medium between A. variegata and A. evoletu in general appearance, and in the character of the ribs and markings. The ribs are much more close and flat than in A. variegata. Philippines. Cuming. ve Genus LUCINOPSIS, Forbes § Hanley. Lucrnopsis unpata (pl. exliv. f. 88, 89). Venus undata, Pennant, Brit. Zool. vol. iv. pl. 55. £51. Venus sinuosa, /d. Lucina undata, Zuwrton. Venus incompta, Philippi. Cytherea undata, Mucgi/. Artemis undata, Adder. L. testé tenui, inflata, pallidé fulvé, subquadratim rotundata, irregulariter et leviter substriati; margine dorsali subelevato ; margine postico subsinuato ; cardine posticée subcomplanato, den- tibus in valva sinistré tribus centralibus, quarum medio dupli- cato, in valvi dextrié duobus; ligamento magno, interné compla- nato; impressione pallii sinu magno rotundato. It seems doubtful whether the characters named by the pro- posers of this genus are sufficient to distinguish it from the Ar- temides. The teeth slightly differ, and the smus in the muscular iiopression is less angular. A well-known species, found in various parts of the British coasts. LIST OF FIGURES IN PLATES CXL. TO CXLIV. (The Figure after each name is the number of the Species.) Fig. Fig. Prats CXL, 6. A. simplex, 8, Hand. 1. A. concentrica, 1, Gmel. 7. — incisa, 5, Reeve. 2. — ponderosa, 3, Gray. 8. — Patagonica, 6, Ph. 3. — distans, 2, Sowd. ? 9. — discus, 10, Reeve. 4. — concinna, 9, Sowd. 10. — plana, 11, Reeve. 5. — Dunkeri, 7, Ph. 11. — nitens, 11, Reeve. 677 Vig. = Fig. Prate CXLI. 54. A. Orbignii, 38, Dunker. 12-14. A. exoleta, 12, Linn. 55. — livida, 47, Ph. 15. — sculpta, 14, Reeve. > 2 16. — lineta, 18, Puit, fe ee 17-19. — amphidesmoides, 15, Rv. 56. A. aspera, 48, Reeve. 20. — trigona, 16, Reeve. 57. — Bieboldii, 53, Reeve. 21. — subtrigona, 17, Sowd. 58. — canaliculata, 49, Sowd. 22. — tenuis, 23, Sowd. 59. — scabriuscula, 50, Ph. 23, 24. — Chinensis, 20, Chem. 60. — Japonica, 51, Reeve. 25. — inflata, 32, Sowd. 61. — subrosea, 52, Gray. 26. — angulosa, 27, Ph. 62. — exasperata, 55, Ph. 27. — subquadrata, 24. Hand. 63. — corrugata, 54, Reeve. 28. — penicillata, 26, Reeve. 64. — Cumingii, 57, Reeve. 29,80. — isocardia, 18, Dunker. 65. — lamellata, 58, Reeve. 31. — nanus, 19, Reeve. 66. — bilunata, 56, Gray. 32. — macilenta, 25, Reeve. 67. — duplicata, 59, Reeve. 68. — tenuilamellata, 60, Sowd. Prats CXLIIL. 69. — excisa, 61, Chemn. 33. A. lunaris, 28, Lamarck. 70. — contusa, 62, Reeve. 34, — ferruginea, 29, Reeve. 71. — striatissima, 65, Sowd. 35, 36. — hepatica, 31, Ph. 72. — pubescens, 64, Ph. 37. — modesta, 30, Reeve. 38. — solidula, 34, Sowerby. UME 39. — lucinoides, 39, Reeve. 73. A. alata, 63, Reeve. 40, 41. — rubicunda, 35, Ph. 74-76. — juvenilis, 67, Gmelin. 42. — sericea, 36, Reeve. 77. — rufa, 66, Lamarck. 43, 44. — cerulea, 32, Reeve. 78. — scalaris, 68, Menke. 45. — compta, 37, Loven. 79. — orientalis, 21, Sow. 46. — torrida, 39, Reeve. 80. — prostrata, 70, Linn. 47. — Gruner, 41, Ph. 81. — lenticularis, 74, Soad. 48. — Africana, 40, Gray. 82. — anus, 69, Ph. 49. — fibula, 45, Reeve. 83. — varicgata, 72, Gray. 50. — biscocta, 44, Reeve. 84. — striatissima, 65, Sowd. 51. — cretacea, 46, Reeve. 85. — lata, 73, Sowerby. 52. — Adansoni, 42, Ph. 86, 87. — laminata, 71, Reeve. 53. — calculus, 43, Reeve. 88, 89. Luctnopsis undata, Pennt. MONOGRAPH OF THE GENUS TAPES. Fam. Veneride. (Taves, Megerle; Puttastra, Sowerby.) Char. Gen. Testa eequivalvis, inequilateralis, plerumque ovali- oblonga, plerumque concentricé plus minusve lirata. Cardo elon- gatus, angustatus, dentibus in utrique valva tribus, compressis, posticis et medianis duplicatis. Ligamentum elongatum. Imn- pressiones musculares pyriformes. Impressio pallii simu profundo, plerumque elongato. The distinctions between these shells and those of the genus Venus are vague and uncertain; consisting principally in the lengthened form of outline, and in the compressed and bifid cha- racter of the hinge-teeth. ‘The sinus in the pallial impression is also generally deep and conformed to the length of the shell. The external surface is generally marked by concentric ribs or strie. The typical species, Venus pullastra, and its rock-dwelling variety V. perforans, have been placed in separate genera (the latter m Venerirupis, Lamarck), but are now established beyond question as belonging to the same species; the difference of form and surface resulting from the accidental confinement of the shell in some small hollow preventing its full development. Zapes decussata leads into several other species which have radiating strize or ribs ; and these again lead into others which so nearly resemble them as to induce me to include them, although they have crenulated inner margins. Although some of the species are subject to occasional confinement in small hollows of rocks, it is by no means the general habit of the genus, as in the case of the true Venerirupes. Many of the large and finely coloured species of Tapes are inhabitants of the Australasian seas, while others of less striking development are found near the British coasts and in the Medi- terranean. 679 Sror. 1. Ventral margin smooth within. 1. Tapes raririamna (pl. exlv. f. 3, 4,5), Lamarck (Venus), sp. 45. Anim. sans vert. Var. Venus marmorata, Lamarck ? T. testé crassi, ovali, tumidé, subsequilaterali, planulatim li- rata, sulcis intermediis subdistantibus in medio subobsoletis fulva, nigel elongatis castaneis et altcris albescentibus triradiata ; margine dorsali livido, rufo-lineato, excavato ; margine ventrali rotundato. An oval tumid shell, with flat mbs divided by rather distant grooves, which are more shallow in the middle; the colouring is bay, with three radiating rows of distant arrow-headed spots with white spaces under them. Senegal. 2. Tapes PAPILIONACEA (pl. exlv. f. 1, 2), Lamarck (Venus), Anim. sans vert. T. test clongaté, subcompressi, planulatim lirata, posticé par- tim levigatéi; stramined, griseo et rufo minuté maculata, maculis castaneis magnis quatuor radiata, intus ad marginem purpureo- maculata ; margine dorsali litcrato, posticé arcuato, elongato, de- clivi, anticé excavato; lunula indistinct, lanccolaté; margine ventrali posticé subtruncato, vix emarginato, antice clevato. Long, rather flat, with flattened ridges reaching nearly to the back ; the dorsal edge i is arched and gradually sloped at the back, while i in front it is rather excavated than otherwise ; it 1s marked on both sides with fine lines. The ventral margin is more swollen in front than at the back, but turned up towards the dorsal mar- gin. It is straw-coloured, with greyish and reddish small spots, and four radiating rows of large squarish chestnut-coloured spots. The immer margin is marked with purple spots. Ceylon. 3. Tapus tirata (pl. exlv. f. 19), Philippi (Venus), Abbild. pl. vi. f. 5. T. test&é subrhomboided, rotundatim sulcis profundis lirata ; pallidé rufa, fusco punctatim literat’, maculis magnis castancis quadriradiata ; ; margine dorsali literato, utrinque rectiusculo, gra- datim declivi, margine ventrali rectiusculo, antice paululum elevato. 4 680 Coloured like 7. papilionacea, more ventricose and square, with the ribs continuous, rounded and elevated. Philippines. 4. Tapes uxarata (pl. exlv. £18), Phclippi (Venus), Ab- bild. pl. v. f. 6. T. testa. subquadraté, minute et profundé liraté; pallidé fulva, palhidé rufo maculata et literaté, maculis pallidis quadriradiata ; margine dorsali hterato, rectiusculo, paululum declivi; margine ventrali posticé truncato, prope medium vix emarginato, anticé elevato. Resembling 7. divata, but shorter and more truncated, with the riblets very minute although equally deep. The colour is pale hiterated brown, with four pale brown interrupted rays. Red Sea. 5. Tapes nuGzypra (pl. exlv. f. 17), Philippi (Venus), pl. vii. foo. T. testi subquadrata, distanter concentricé costellata; rufa, fusco-quadriradiaté ; margine dorsali rectiusculo, posticé vix de- clivi; margine ventrali posticé truncato, rectiusculo, anticé ele- vato. Of a square form resembling 7. exarata, but with the ridges few and distant. Locality unknown. 6. Taprs AMABILIS (pl. exlv. f. 11), Phedippi (Venus), Ab- bild: pl. vi. f..2, T. testa oblonga, subventricosa, planulatim sulcis profundis in- termediis liraté; pallide rufa, griseo obscuré maculaté; margine dorsali vix literato, posticé declivi, anticé subexcavato ; margine ventrali subrotundato, anticé elevato, posticé rotundatim sub- truncato. The colour is pale pink, with obscure markings of purplish- grey. The ribs are flat, with deep intermediate grooves. The shell is more ventricose than 7. dirata. . Locality unknown. Vile = > & = ae = = w” Pal ” oo 5 ace ” 111 LIBRARIES SMITHSONIAN INSTITUTION NOILNLILSNI NVINOSHLINS S31YVYGIT o os es phe BI a n QE jc = o . t fy z oc = AS oc 4H < YP 4 A < Ho ASS. 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