208 VENUS. VENUS-SHELL. Class VI. 



(B.) Somewhat orbicular. 



20. REFLEXA. Mo?it. Test. Br. Sup. 40. l68. 



* V. with a suborbicular shell ; ridges nurne- 

 rous, thin, reflected ; Avith an heart-shaped de- 

 pression of a different color from the shell, near 

 the hinge. 



Found on the coast of south Dex'on, and in 

 Scotland, 



21.TIGERI- Gm. Lin. 3283. Mont.Test. Br. \\Q. t. A. 



NA. Lin. Tr. viii. 86. f. 2./. S. f. \. 



* y . with an orbicular shell, compressed ; ridges 

 decussated, with an oval depression near the 

 hinse : diameter scarcely one inch. 

 Found on the Dorsetshire coast. 



22. ORBiciJ- Mont. Test. Br. Sup. 42. 



LATA. 



* V. with a white orbicular shell, depressed, 

 cancellated ; beak very small, with a minute 

 iieart-shaped depression; lateral tooth much 

 more remote than in the preceding, which this 

 species in some measure resembles ; diameter 

 iive-eighths of an inch. 

 Near Dmibar. 



