OP CONCHOLOGY 103 



with the opposite lamina; with a fine 

 olivaceous brown epidermis, very 

 glossy, with transverse stria? which 

 takes a longitudinal direction across 

 the shell. Common on most sandy 

 shores. 



Linn. Trans, vol. viii. page 43. 



vv Breadth of the shell, u u length 

 of the shell. 



Fig. 6th-VENUS COMPRESSA. 

 Shell strong, thick, sub-orbicular, 

 compressed, and slightly sulcated or 

 irregularly wrinkled ; colour white, 

 but is usually covered by a thick yel- 

 lowish-brown epidermis; nmbo pro- 

 minent, turning to one side, beneath 

 which is a small cordiform depression; 

 hinge with two teeth in one valve, and 

 a transverse one. 



c Sides, d base, ee cicatrix, g g 

 teeth of the hinge, to the umbo. 



Supp. to Testa. Brit, page 43. 

 Fig. 7th..~.ANOMIA EPHIP- 

 PIUM. Shell sub-orbicular, irregu- 



