GEOGRAPHICAL DISTRIBUTION OF NEW YORK CNIONHLE 83 



Unio occidens, Lea. 



New York. 



Oswego river Beauchamp. 



Seneca river, Onondaga county Beauchamp. 



Pittsford, Monroe county . . . : Crump. 



Tonawanda creek, Niagara county Wright. 



Ontario. 



Ottawa Latchford. 



Hamilton bay Leslie. 



Pennsylvania. 



Allegheny river, Warren county Beecher. 



Ohio. 



Ohio river, Cinn Beecher. 



Ohio river system Sterki. 



Michigan. 



Detroit river Beecher. 



Several localities Walker. 



Indiana. 



White river Walker. 



Illinois. 



Kaskaskia river Hinkley. 



Iowa. 



Muscatine Walker. 



Kansas. 



Eastern portion ... Quintard. 



Arkansas. 



Marsh. 



Occurs in the St. Lawrence and Mississippi drainage systems. 

 Found in both systems in New York. 



Unio ochraceus, Say. 



Maine. 



Morse. 



New England. 

 Gould. 



Massachusetts. 

 Plymouth Walker. 



New York. 



Hudson river system 



Mohawk, Herkimer county Lewis. 



