]82 VENUS. 



nebulosa. 53. Shell somewhat heart-shaped, gla- 

 brous, clouded and marked with four rays; 

 anterior depression oval, and the posterior 

 ovate; margin entire. 



Venus nebuiosa. Chemnitz, vi. p. 356. t. 34. f. 359 to S6l. 

 Gmelin, p. 3279- 



Venus, No. 24. Schroeter Einl. iii. p. 163. 

 Inhabits the coasts of Tranquebar. Chemnitz. 

 This shell appears, by Chemnitz's description and figures, to 



be nearly allied to V. triradiata, from which it principally 



differs in being but little more than half as large, and clouded 



with bluish or cinereous dots. 



exilis. 54. Shell somewhat heart-shaped, very 

 smooth, without any posterior depression; 

 margin entire, and the anterior tooth of the 

 hinge slightly crenulated. 



Venus exilis. Chemnitz, vi. p. 357. t. 34. f. 362 and 363. 



Venus contemta. Grnelin, p. 3279- 



Venus, No. 25. Schroeter Einl. iii. p, 163. 



Inhabits the coasts of Malabar. Chemnitz. 



Shell about seven or eight lines long, and ten broad ; thick, yel- 

 lowish white, with the umbones white, reddish, or dusky ; 

 and sometimes marked with a red angular spot shaped like the 

 letter M. 



recens. 55. Shell somewhat heart-shaped, with 

 three longitudinal rays, and transversely stri- 

 ated ; posterior depression impressed and 

 oval. 



Venus recens. Chemnitz, xi. p. 229. t. 202. f. 1979« 

 Inhabits the coasts of Coromandel. Chemnitz. 

 Shell about an inch long, and rather more than an inch and a 



quarter broad ; of a greyish colour, with three broad darker 



longitudinal rays, and the inside towards the anterior end, and 



at the hinge is greenish. 



japonica. 56. Shell somewhat heart-shaped, angu- 

 lated at the anterior end, and densely striated 

 transversely; anterior depression obsolete, 

 and the posterior oblong-ovate. 



