VENUS.— Plate XXV. 



rather acuminated, solid, rather gibbous, cream-co- 

 lour, delicately obscurely rayed with violet-grey, 

 smooth, partially covered with a thin horny epidermis. 



Cythcrea obesa, Sowerby, Thes. Conch, vol. ii. p. 626. pi. 

 131. f. 83, 84.. 

 Dioni; obesa, Deshayes. 



Hnb. P 



A solid gibbous shell belonging more strictly to the 

 genus Dione. 



Species 133. (Mus. Brit.) 



Venus obov.*lis. Veii. testa ovata, ojiaco-nlbd, concen- 

 trici dense Minute striata, striis plus minns erosis, hie 

 illic obsoletis, ad marginem posticum rude plicato- 

 corruijatis, lunidd parvd. 



The oval Venus. Shell ovate, opake-white, concentri- 

 cally densely minutely striated, striae more or less 

 eroded, here and there obsolete, inidely plicately 

 wrinkled on the posterior margin, lunule small. 



Chione obovalis, Deshayes, Cat. Conch. Brit. Mus. p. 154. 



Hah. ? 



A peculiarly ^oft opake-white shell, distinguished by a 

 characteristic style of sculptiu'e. 



Species 133. (Mus. Belcher.) 



A ENUS ELEGANS. Vcu. tesld oblongo-ovattt, compresse 

 cordatd, Candida, pos/ice subovgulatd, concentrice cos- 



tatd, costis suidislantibus, irregularibus, laminato-re- 

 Jlexis, prasertim ad anguliim posticvm, lunula parvd. 



The ELEGANT Venus. .Shell oblong-ovate, compressly 

 heart-shaped, white, posteriorly faintly angled, con- 

 centrically ribbed, ribs rather distant, irregular, la- 

 mellately reflected, especially on the posterior angle, 

 lunule small. 



Adams and Keeve, Moll. Voy. Samaraug, p. 79. pi. 2-1. 

 f. 13. 

 Cliione elegans, Deshayes. 



Hah. China Seas. 



A delicate white shell, neatly sculptured with irregular 

 concentric laniellsB, which are stronger on the posterior 

 angle. 



Species 134. (Mus. Cuming.) 



Venus irregularis. Veu. testd cordato-ovatd, calcureo- 

 albd, concentrice laminato-liratd et striata, laminis 

 striisque versus marginem numerosis gradatim confer- 

 tiorihiis et irregularihus. 



The irregular Venus. Shell cordately ovate, chalk- 

 white, concentrically lameUately ridged and striated, 

 lamellsB and striae numerous, gradually more close- 

 set, and irregular towards the margin. 



Hub. Mouth of the Gaboon, West Africa. 



The concentric lamellae are tolerably eqiddistant around 

 the umboes, but soon they become particularly crowded 

 and irregular. 



