VENUS. 175 



broad brown bands, and cinereous spots and streaks, and the 

 cordiform depression marked with brown lines. 



erycina. 38. Shell oblong-heart-shaped, polished, 

 with very obtuse broad transverse ribs ; an- 

 terior slope glabrous, and the posterior de- 

 pression ovate. 



Venus Erycina. Linnaus Syst. Nat. p. 1131. Chem?iitz } 

 vi. p. 334. t. 32. f. 337 to 339. Schroeter Einl. iii. p. 

 120. Gmelin, p. 3271. 

 Bonanni Rec. 2. f. 64 and 65. and Kirch, f. 63 and 64. 

 Lister Conch, t. 268. f. 104. Knorr, iv. t. 3. f. 5. Fa- 

 vanne, t. 46. f. F. 2. Enc. Meth. p. 364. f. 3. 

 Inhabits the coasts of Europe. Linnaus. East Indies. Gro- 

 novius, <5fc. Tranquebar, Ceylon, and the Moluccas. Chem- 

 nitz. 

 Shell varying considerably in size, but is most commonly about 

 two inches and a quarter long, and two inches and three- 

 quarters broad, and is strong, and rather ihick and heavy ; it 

 is of a pale flesh colour, with brownish longitudinal, some- 

 what interrupted rays, which vary in breadth, and are often 

 much crowded, and the margin is sometimes bordered with 

 orange ; the anterior slope is glabrous, and the cartilage 

 cleft large. 



costata. 39. Shell oblong-heart-shaped, polished, 

 with broad transverse ribs ; anterior depres- 

 sion lanceolate, and the posterior cordiform. 



Venus costata. Chemnitz, xi. p. 226. t. 202. f. 1975. 



Inhabits the coasts of Ceylon. Chemnitz. 



This shell is of about the same size, and from the description, 

 it appears rather doubtful whether it is more than a Variety 

 of V. Erycina, for in that species the posterior depression is 

 somewhat cordiform, though more inclining to ovate ; the 

 colour is whitish, variegated with obsolete interrupted longi- 

 tudinal rays, and scattered reddish streaks. V. costata of 

 Gmelin is an extremely obscure species, for the description 

 is quite different from Knorr, iv. t. 3. f. S. from which it 

 was obviously constituted, and which is much more like So- 

 len sanguinotentns. 



*acifica. 40. Shell oblong-heart-shaped, polished, 

 with flattish transverse stria?, and the poste- 

 rior depression cordiform. 



