GEOGRAPHICAL DISTRIBUTION OF NEW TCRK UNIONIM' 



Unio gracilis, Barnes. 



New York. 



Onondaga lake Beauchamp. 



Cross lake, Onondaga county Beauchamp. 



Pittsford, Monroe county Crump. 



Erie canal, Rochester Delaney. 



Ontario. 



Ottawa Latchford. 



Hamilton bay Leslie. 



Pennsylvania. 



Allegheny river, Warren county Beecher. 



Ohio. 



Ohio river, Cincinnati Beecher. 



Ohio river system Sterki. 



Michigan. 



Detroit river Walker. 



Indiana. 



Marsh. 



Illinois. 



Spoon river Strode. 



Several localities Hinkley. 



Iowa. 



Muscatine Walker. 



Kansas. 



Eastern portion Quintard. 



Missouri. 



Marsh. 



Tennessee. 



Cumberland river Hinkley. 



Alabama. 



Coosa river Hinkley. 



Mississippi. 



Marsh. 



Indian Territory. 



North Fork Canadian river Quintard. 



Louisiana. 



Bienville parish , Yaughan. 



Texas. 



Hinkley. 



Occurs in the St. Lawrence and Mississippi drainage systems. 

 Found in both systems in New York. 



