VENUS. 



Plate XVIII. 



Species 78. (Mus. Cuming.) 



Venus lamellata. Ten. testa oblongo-ovatd, postice ob- 

 lique trigond, fulvescente-albd, rosea tbicld, concen- 

 trice lamellatd, lamelUs dlstantlbus, o-ispaio-s/n'ntis et 

 reflexis, ad angulum posticum Jimbriatis et lacunalis, 

 ititerstitiis lavibus. 



The lamellated Venus. Shell oblong-ovate, posteri- 

 orly obliquely triangular, fulvous-wliite, tinged 'iWth 

 rose, concentrically lamellated, lamellse distant, cris- 

 pately striated and reflected, frilled and spouted at 

 the posterior angle, interstices smooth. 



Lamarck, Anim. sans vert. vol. 6. p. 3i9. 



Hab. Tasmania ; R. C. Gunn. 



The spouted foUations of the concentric lamellae are 

 quite remarkable in this very beautiful species. 



Species 79. (Mus. Cuming.) 



Venus Peruviana. Ven. testd subangusie ovald, calccireo- 

 albd, concenlrice costatd, costis tnmidls, rejlexis, fer- 

 rxgbieo-tinclis, poslice lorn ii/a to-nppressis . 



The Peruvian Venus. Shell rather narrowly ovate, 

 chalk-white, concentrically ribbed, ribs swollen, re- 

 flected, rust-dotted, posteriorly laminately appressed. 



SowERBY, Pro. Zool. Soc. 1835. p. 23. 



Hab. Ancon, Peni ; Cuming. 



In this species the concentric laminae, instead of being 

 erectly spouted, are appressed. 



Species 80. (Mus. Cuming.' 



Venus ornatissima. Fen. tesld pectbiato-globosd, ienui- 

 culd, sord'tde albd, radiatini crebricostatd, costis regu- 

 laribus, versus marginem duplicibus, concentrice latni- 

 nato-fimbritttn, fiinbrid erectd. 



The highly-adorned Venus. Shell pectinately glo- 

 bose, rather thin, dead-white, radiately closely ribbed, 

 ribs regular, duplicate towards the margin, concen- 

 trically laminately frilled, frill erect. 



Broderip, Pro. Zool. Soc. 1835, p. 44. 



Hab. Panama (dredged from sandy mud, at ii depth of 

 ten fathoms) ; Cuming. 



This elegantly-frilled shell, described nearly thirty years 

 ago, is still unique. 



Species 81. (Mus. Cuming.) 



Venus plicata. Ven. testd pectinato-subtrigond, planins- 

 culd, concentrice plicato-laminatd, laminis erectis, su- 

 perne subrejlexis, postice bifariani Jimbriatis et lacnna- 

 tis, interstitiis Irevibus. 



The plaited Venus. Shell pectinately subtriangular, 

 rather flat, concentrically plicately laminated, lamina; 

 erect, a little reflected at the top, posteriorly double- 

 frilled and spouted, interstices smooth. 



Gmelin, Syst. Nat. p. 1130. 



Hab. West Africa. 



Some authors have assigned this weU-known species to 

 the V. dysera of Linnaeus, but so much uncertainty pre- 

 vails as to which species Linnaeus intended to denote by 

 V. dysera, that the name has been expunged from the 

 series altogether, first by Lamarck, and notably so by 

 Deshaycs. 



Species 83. (Mus. Cuming.) 



Venus Kellettii. Ven. testd subanguste pectinato-ovatd, 

 calcareo-albd, ferrngineo-fusco tiuctd et radiaid, con- 

 centrice lineari-sulcatd, sulcis distantibus, prope nmbo- 

 iies subtditer radiatim liratis, areis intermediis lavi- 

 bus, lateribus laiuinato-alatis. 



Kellett's Venus. Shell rather narrowly pectinately 

 ovate, chalk-white, stained and rayed with rust-brown, 

 concentrically linearly grooved, grooves distant, near 

 the umboes finely radiately ridged, intermediate 

 spaces smooth, sides laminately winged. 



Hinds, Moll. Voy. Sulphur, p. 6.5, pi. 19. f. 5. 



Hab. West coast of Veragiia, Central America. 



Distinguished by foliations on either side, without any 

 intervening lamellae. 



Species 83. (Mus. Cuming,) 



A^ENUS alatus. Ven. testd subirigonxi-ovatd.fuloescente- 

 altjd, spadiceo-fuscescente radu\td, unibonibus cameo 



June, 1SC3. 



