73 



Lake, Urbana, Champaign Co. ; Fox Lake, Lake Co. ; Thompson's 

 Lake, Fulton Co.; Hamilton Co. (State Laboratory). 



Anodonta grandis footiana Lea (= marry attana Lea). 



Cook Co. (Baker, Calkins, Marsh); Dundee, Kane Co. (En- 

 gleholm); Du Page River (Handwerk) ; Silver and Crystal 

 lakes and Algonquin, McHenry Co. (Lyon, Nason) ; Lake Co. 

 (Marcy, Marsh) ; Northern Illinois (Nason) ; Grass Lake, Lake 

 Co. (Woodruff) ; Cedar Lake, Lake Co. (State Laboratory). 



Anodonta grandis gig antea Lea {—decora Lea, plana Lea). 



Cook Co. (Calkins); Mercer Co., Edwards Creek; Big Ver- 

 milion River (Marsh) ; Spoon River (Strode) ; Southern Illinois 

 (Ulffers). 



Anodonta corpulenta Cooper. 



Savanna, Carroll Co. (Baker) ; Northern Illinois; Peoria Lake, 

 Peoria Co. ; La Salle Co. (Calkins); Aledo, Mercer Co. (Call); 

 Illinois River (Cooper, Ferriss, Handwerk, Kelly) ; Quincy, Ad- 

 ams Co. (Hart, Nason) ; La Salle Co. (Huett) ; Cook Co. (Jen- 

 sen) ; Thompson's Lake, Fulton Co. (Kelly, Strode) ; Mercer 

 Co., Mississippi River (Marsh); Fulton Co. (Wolf); Havana, 

 Mason Co; Pekin Lake, Tazewell Co. (State Laboratory). 



Anodonta marginata Say ( = fragilis Lamarck, subcarinata Currier, 

 lacustris Lea). 

 Hickory Creek, Will Co.; Desplaines River (Handwerk); 

 Lake Co. (Marsh); Spoon River (Strode); Fulton Co. (Wolf). 

 Simpson gives this as found in the St. Lawrence River drain- 

 age, but the records above seem to be authentic. 



Anodonta implicata Say. 

 Lake Co. (Marsh). 



Genus Lastena Rafinesque. 



Lastena lata Rafinesque ( —dehiscens Say). 



Illinois (Call); Illinois River (Marsh); Southern Illinois 

 (Ulffers). 



Genus Anodontoides Simpson. 



Anodontoldes ferussacianus Lea. 



Cook Co. (Baker) ; Hickory Creek, Will Co. (Ferriss, Hand- 

 werk) ; Du Page River (Gault) ; Kishwaukee River and Kent's 

 Creek (Hinkley) ; Mercer Co., Edwards Creek (Marsh); Fox 



