NEW TOEK STATE MUSEUM 



Pennsylvania. 



Allegheny river, Warren county Beecher. 



Ontario. 



Ottawa Latchford. 



Grand river, Brant county Leslie. 



Ohio. 



Ohio river, Cincinnati Beecher. 



Michigan. 



Ann Arbor Beecher. 



Generally distributed Walker. 



Grand Rapids Beecher. 



Indiana. 



St. Joseph river Walker. 



Illinois. 



Several localities Hinkley. 



Wisconsin. 



Marsh. 



Iowa. 



Boone Beecher. 



Dallas county Walker. 



Kansas. 



Osage county Quintard. 



Nebraska. 



, Marsh. 



Missouri. 



Kansas City Beecher. 



Tennessee. 



State coll. 



Georgia. 



Marsh. 



Alabama. 



Marsh. 



Mississippi. 



Marsh. 



Arkansas. 



Marsh. 



Louisiana. 



Mt. Lebanon Hinkley. 



Occurs in the St. Lawrence and Mississippi drainage systems. 

 Found in both systems in New York. 



