142 



Subgenus ANODONTA, Lam. 



A. Benedictii, Lea. 



A. edeiitula, Say. 



I A. Ferussaciana,-^ Lea. 



A. Footiana, Lea. 



A. fluviatilis, Bill. 



A. fragilis, Lam. 



A. iml)ecillis, Say. 



A. implicata, Say. 



A. lacustris, Lea. 



A. Lewisii, Lea. 



A. subcylindracea, Lea. 



A. undulata, /Scrj^. 



Dewey ; Lea (Lake Cliamplain) ; Robinson. 



Genesee River (Dewey). 



Genesee River (Dewey). 



Dewey ; Robinson. 



Lewis ; Skillton. 



Dewey. 



Dewey ; Lewis ; Robinson. 



Skillton. 



Ingalls ; Lewis. 



Dewey ; Lewis ; Robinson. 



Dewey ; Lewis ; Robinson. 



Ingalls ; Lewis. Dewey quotes the species, 



erroneously, no doubt. It may not occur so 



far west. 



23 This is probably an erroneous interpretation of a sexual variety of A. subcylindracea. 

 An. Ferussaciana probably does not occur in this State. 



