NOETH AMERICAN CONCHOLOGY. 



173 



Family Solenacea. 



Family Myaria. 



13 Mya arenaria Linn, (var.) 

 Mya acuta Say. 



13 cancellata Conrad. 



14 truncata Lam. 



M. ovalis Turt. (young.) 



14 Corbula contracta Say. 



15 Pandora trilineata Say. 



P. nasuta Sowb. 



N. England, N.Y., N.J. 



Upper California. 

 Newfoundland. 



Rhode Island. 

 New York, N. J. 



1G 

 16 



16 

 16 



Family Osteodcsmata. 



Osteodesma hyalina Conrad. New York. 



Cochlodesma Leana Conrad. 



Anatina Leana Conrad. 

 Periploma angulifera Phil. 

 argentaria Conrad. 



New York. 



Galveston. 

 California. 



