72 



McHenry Co; Athens, Menard Co. (Nason); Spoon River 

 (Strode); Fulton Co. (Wolf); Havana, Mason Co. ; Peoria, Pe- 

 oria ( !o. (State Laboratory) . 



Strophltus edentulus pavonius Lea. 



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

 Will Co. (Handwerk) ; Wabash River (Marsh). 



HOMOGEN/E. 



Genus Anodonta (Bruguiere) Lamarck. 

 Anodonta inioecilis Say. 



Cook Co. (Baker, Calkins, Jensen); Northern Illinois (Calk- 

 ins); Illinois River (Calkins, Kelly, Strode) ; Kankakee River 

 (Ferriss); Quincy, Adams Co. (Garman, Hart); Desplaines 

 River (Handwerk); Kishwaukee and Big; and Little Muddy 

 rivers (Hinkley) ; La Salle Co. (Huett) ; Pulaski Co. (Lyon); 

 Mercer Co., Mississippi River (Marsh); Spoon River (Strode); 

 Southern Illinois (Ulffers); Fulton Co. (Wolf); Quiver Lake 

 and Havana, Mason Co. ; Peoria, Peoria Co.; Hamilton Co. ; 

 Pekin Lake, Tazewell Co. (State Laboratory). 



Anodonta suborblculata Say. 



Northern Illinois (Calkins) ; Springfield, Sangamon Co. 

 (Call) ; Putnam Co. (Ferriss) ; Thompson's Lake, Fulton Co. 

 (Kelly, Strode) ; Fulton Co. (Lyon, Wolf) ; Mercer Co., Missis- 

 sippi River (Marsh); Spoon and Illinois rivers (Strode); 

 Southern Illinois (Ulffers); Thompson's Lake, Fulton Co.; 

 Clear and Quiver lakes, Mason Co. (State Laboratory). 



Anodonta grandis Say (—sahnonia Lea, ovata Lea). 



Cook Co. (Baker, Nason) ; Northern Illinois (Calkins) ; Fox 

 River, Dundee, Kane Co. (Engleholm) ; Illinois River (Ferriss, 

 Strode) ; Quincy, Adams Co. (Garman, Hart, Nason) ; Du Page 

 River (Gault) ; Desplaines River (Handwerk) ; Mackinaw Riv- 

 er, Kappa, Woodford Co. (Hart) ; Winnebago Co. ; Little Wa- 

 bash, Kaskaskia, Big Muddy, and Little Muddy rivers (Hink- 

 ley) ; La Salle Co. (Huett) ; Thompson's Lake and Spoon River, 

 Fulton Co. (Kelly, Strode) ; Union Co. (Lyon) ; Lake Co. 

 (Marcy) ; Rock River, Mercer Co. ; Washington Co. ; Winnebago 

 Co. (Marsh); Algonquin, McHenry Co.; Athens, Menard Co. 

 (Nason); Southern Illinois (Ulffers) ; Fulton Co. (Wolf); 

 Grass Lake, Lake Co. (Woodruff) ; Havana, Mason Co. ; Crystal 



