58 



NEW YORK STATE MUSEUM 



Yates county Hinkley. 



Canandaigua lake Morgan . 



Erie canal, Rochester Walton . 



Lake Ontario , Walker . 



Ontario. 



Ottawa Latchf ord . 



Lake Erie, Port Dover Leslie. 



Hamilton bay ... Leslie . 



Michigan . 



Detroit river Hinkley . 



Various localities; all in Great Lake basin Walker. 



According to the localities reported above, the species is con- 

 fined to the St. Lawrence drainage system. 



Unio Boydianus, Lea. 



New York. 



Oak Orchard Creek, Orleans county Lea. 



Lake Ontario ... Marsh. 



This species has not been generally recognized by collectors. 

 Wm. A. Marsh and Chas. T. Simpson suggest that it is a small 

 variety of Unio radiatus. So far as reported it is confined to a 

 very limited area in the St. Lawrence drainage system. 



Unio cariosus, Say. 



Maine. 



Winkley. 



New England. 

 , Gould. 



Connecticut. 



Connecticut river State Coll. 



New York. 



Hudson river system , 



Delaware river system 



Schoharie Creek Gebhard. 



Erie canal, Mohawk , Call. 



Onondaga county Beauchamp. 



Honeoye Lake, Ontario county S. H. Wright. 



Ontario. 



Ottawa Latchford. 



