MOLLUSCA 157 



Tellina tenera Say (Tellen) 



PLATE XIV. Fig. 14 



A small white shell occasionally tinted pink; 

 common in sand associations from the littoral zone 

 to about 10 fathoms. This species, which is frequent- 

 ly found on the New Jersey beaches, is known from 

 Prince Edward Island to Florida. 



Tellina is a southern genus, and many beautiful 

 species are known between Cape Hatteras and 

 Florida and in the West Indies. 



Macoma tenta Say 



Very similar to the above but without the lateral 

 hinge teeth. Not as common as T. tenera, but known 

 from Cape Cod to Florida. 



Macoma balthica Linne 



PLATE XIV. Fig. 3 



A white or pink shell, about an inch long, 

 rounded in shape, often with a thin dusky epidermis ; 

 characteristic of brackish water and especially 

 abundant in Delaware Bay. 



Known from the Arctic regions, where it is very 

 common, as far south as Georgia. 



Macoma calcarea Gmelin 



Similar to the above but more pointed posterior- 

 ly. A northern species known from the Arctic to 



