138 CONCHYLIA— D/THra^. 33, 



Pennant, Brit. Zool. iv. p. 203. 

 Dillwyn, Descript. Catal. p. 166. 

 Turton, Conch. Diet. p. 236. 

 Mus. nost. Devonshire coast, and British Channel. 



Shell a quarter of an inch long, and a little more in breadth, 

 whitish or flesh-color, with four red spots and generally two white 

 lines connecting the two upper ones with the two lower ones, so as 

 to form a triangle, with broad smooth transverse rather obscure ribs. 



The red spots, two of which are near the hinge and closer toge- 

 ther, and two near the margin and more asunder, will distinguish it 

 from the young of Venus fasciata, besides the lateral teeth in the 

 hinge. 



orbiculata. Cyprina testd suborMculari decussatim striata, dentihus duobus. 



5 



Shell somewhat orbicular, with decussate striae, and two teeth. 

 Venus orbiculata. Montagu, Suppl. p. 42, tab. 29, fig. 7. 



Pennant, Brit. Zool. iv. p. 208. 



Turton, Conch. Diet. p. 241. 

 Dredged by Captain Laskey, near Dunbar. 



Shell five-eighths of an inch in diameter, flattish, white ; coarse- 

 ly striate both transversely and longitudinally : beaks very small, 

 with a minute heart-shaped impression under them. 



