82 



NEW YORK STATE MUSEUM 



Illinois. 



Hock river, Rockford Beecher. 



Tennessee. 



( Columbia Hinkley. 



Occurs abundantly in various parts of the St. Lawrence and 

 Mississippi drainage systems, and the Museum collection contains 

 one specimen from Butternut creek, Otsego county, N. Y. — a 

 locality in the Eastern system just within the boundary between 

 the Eastern and St. Lawrence systems. 



Unio nasutus, Say. 



Massachusetts. 



Ijynn Walker. 



Rhode Island. 



Carpenter. 



New York. 



Hudson river system 



Delaware river Beauchamp. 



Niagara river Hinkley. 



Erie canal, Rochester Delaney. 



Pittsford, Monroe county Crump. 



Ontario. 



Hamilton bay Leslie. 



Pennsylvania. 



Philadelphia Coll. Phila. Acad. 



Ohio. 



Northern part Sterki. 



Michigan. 



Detroit river Walker. 



Presque Isle county Walker. 



Virginia. 



Canal at Alexander Sterki. 



Occurs in the Eastern and St. Lawrence drainage systems. 

 Found in both systems in New York. 



