NORTH AMERICAN CONCHOLOGY. 



407 



Locality. 

 Upper Missouri river. 

 Upper Missouri river. 

 Lake Vaseux. 



Upper Missouri river. 

 Lake Vaseux. 

 Wiscousiu river, &c. 



Upper Missouri river. 

 Upper Missouri river. 



Upper Missouri river. 



Tufts. — A List of Shells collected at Swampscot, Lynn, and 

 vicinity: by Samuel Tufts, Jr. (From Proceedings of Essex 

 Institute, vol. i, p. 25. Salem, Mass., 1856.) 



[No descriptions are giveu, but notes on locality, &c. — W. G. B.] 



Page. 



26 Teredo dilatata St. 



26 Pholas crispata. 



26 costata? 



26 Solen ensis. 



26 Machaera costata. 



26 Solemya velum. 



26 borealis. 



26 Glycimeris siliqua. 



26 Mya arenaria. 



26 truncata. 



26 Corbula contracta? 



26 Pandora trilineata. 



26 Osteodesma hyalina. 



26 Anatina papyracea. 



26 Cochlodesma Leana. 



26 Thracia Conradi. 



26 Couthouyi St. 



26 truncata. 



27 Mactra solidissima. 

 27 ovalis. 



27 Mesodesma arctata. 



27 Kellia rubra. 



27 Saxicava distorta. 



Petricola pholadiformis. 

 Sanguinolaria fusca. 



sordida. 

 Tellina tenera. 



tenta. 

 Lucina radula. 



flexuosa. 

 Cyclas partumeia. 



Astarte castanea. 



sulcata. 



quadrans. 

 Cyprina Islandica. 

 Cytherea convexa. 

 Venus mercenaria. 



gemma. 

 Cardium pinnulatum. 



Islandicum. 



Grcenlandicum. 

 Cardita borealis. 

 Nucula thraciaeformis. 



limatula. 



minuta. 



