184 VENUS. 



little exceeds the length ; it is marked, especially towards the 

 sides, with minute transverse wrinkles ; the colour is white, 

 more or less clouded with stains proceeding from the pur- 

 ple, chestnut, or yellowish broad angulated streaks, or 

 blotches, with which it is irregularly ornamented. 



pectunculus. 59. Shell somewhat heart-shaped, 

 ventricose, transversely striated ; posterior 

 depression, oval-oblong, striated, and rather 

 obsolete; margin very entire. 



Venus pectunculus. Gmelin, p. 3287. 



Venus lentiginosa. Chemnitz, xi. p. 223. t. 201. f. 1963 



and 1964. 

 Venus castrensis Var. Chemnitz, vi. p. 365 and 366. t. 35* 



f. 375 to 377. 

 Venus picta. Solander's MSS. Callones Cat. p. 47- No. 



884. 

 Lister Conch, t. 254 f. 89. t. 256. f. 91- and 257- f. 92. 



Gua/ter, i. 82. f. G. Regenfuss, i. t. 1. f. 3. 

 Inhabits the Red Sea. Forskael. Coasts of Tranquebar, 

 Ceylon, and the Nicobar Islands. Chemnitz. China. Hum- 

 phreys. 

 This shell is of about the same size as V. castrensis, and 

 is marked with nearly similar characters ; from the descrip- 

 tions and figures above referred to, it appears to differ prin- 

 cipally in being rather broader, and more distinctly striated 

 transversely, but both Schroeter and Gmelin have blended 

 many of its synonyms with V . castrensis, of which it is pro- 

 bably nothing more than a variety. 



lyORENZiANA. 60. Shell somewhat heart-shaped, 

 smooth, with dark transverse zic-zac stripes ; 

 posterior depression cordiform, and the mar- 

 gin entire. 



Venus Lorenziana. Chemnitz, xi. p. 222. t. 200. f. 1961 

 and 1962. 

 Inhabits the coasts of Ceylon. Chemnitz. 

 This shell in size and form much resembles V. castrensis, of 



which it may perhaps be nothing more than a Variety ; it is of 



a dirty white colour, with transverse irregular nearly parallel 



zic-zac reddish brown stripes. 



ornata. 61. Shell sub-triangular-heart-shaped, 



