GEOGRAPHICAL DISTRIBUTION OF NEW YORK UNIONIM 63 



Louisiana. 



Marsh. 



Texas. 



Marsh. 



Confined to the Mississippi drainage system. 



Margaritana deltoidea, Lea. 



New York. 



Mud creek Delaney, 



Erie canal, Monroe county Walton. 



Ohio. 



Miami river Beecher. 



Lake Erie, Put-in-Bay Walker. 



Ohio river system ". Sterki. 



Michigan. 



Generally distributed , Walker. 



Indiana. 



St. Joseph river Walker. 



Illinois. 



Mercer county , Hinkley. 



Kent's creek, Winnebago county Hinkley. 



Iowa. 



Marsh. 



Occurs in the St. Lawrence and Mississippi drainage systems. 

 In New York the species is apparently confined^to the St. 

 Lawrence system. 



Anodonta edentula, Say. 



New York. 



Mohawk river, Mohawk Call. 



Unadilla river, Otsego county Call. 



Little lakes, Otsego county Call. 



Onondaga county Beauchamp. 



Seneca river Beecher. 



Honeoye creek, Monroe county Delaney. 



Pittsford, Monroe county Crump. 



Genesee river Walton. 



Cuba, Allegany county Beecher. 



Ischua creek, Cattaraugus county Beecher. 



Chautauqua lake Beecher. 



Pennsylvania. 



Allegany river, Watren county Beecher. 



