NORTH AMERICAN CONCHOLOGY. 



255 



Name. 

 Unio ochraceus Say. 



nasutus Say* 



alatus Say. 



cylindricus Say. 



undulatus Say = 

 Monodonta Say (n. g.) 

 Anodonta cataracta Say. 



marginata Say. 



undulata Say. 

 Cyclas similis Say. Delaware 



dubia Say. Delaware 



Locality. 

 Delaware & Schuylkill. 

 Delaware & Schuylkill. 

 Lake Erie. 

 Wabash river. 

 Delaware & Schuylkill. 



Say. — 2. The second edition of the same (vol. iv, 1818) contains 

 the article "Conchology." The references to the plates and 

 localities, being the same as in the first edition, are not repeated. 

 The pages are not numbered. 



Odostomia corticaria Say. 

 Uuio crassus Say. 



plicatus Say. 



purpureus Say. 



ovatus Say. 



cariosus Say. 



Musculus latior, &c. List. 



ochraceus Say. 



nasutus Say. 



Mtistulusfuscus, &c. List. 



alatus Say. 



cylindricus Say. 

 Monodonta Say (n. g.) 



undulatus Say. 

 Anodonta cataracta Say. 



marginata Say. 



undulata Say. 

 Cyclas similis Say. 



dubia Say. 



