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Family COCHLICOPLD^E. 



Genus Cochlicopa (Ferussac) Risso. 

 Cochlicopa lubrica Miiller. 



Cook Co. (Baker, Higley) ; Wilmington, Will Co. (Ferriss) ; 

 McHenry Co. (Marsh) ; Algonquin, McHenry Co. (Nason). 



HETERURETHRA. 



Superfamily Elasmognatha. 



Family SUCCINEID^E. 



Genus Succinea Draparnaud. 

 Suecinea ovalis Say ( —obllqua Say). 



Oregon, Ogle Co. ; Cook Co. ; Savanna, Carroll Co. (Baker) ; 

 Northern Illinois (Calkins) ; Fox River (Calkins, -Ferriss) ; La 

 Salle Co. ( Calkins, Huett ) ; Joliet, Will Co. ; Bristol, Kendall Co. 

 (Ferriss, Handwerk) ; Quincy, Adams Co. (Hart); Will Co. 

 (Marsh); Carpentersville, Kane Co. ; Algonquin, McHenry Co. 

 (Nason); Fulton Co. (Wolf); Matanzas Lake, Havana, Mason 

 Co. (State Laboratory ). 



Suecinea ovalis totteniana Lea. 



Cook Co. (Baker, Jensen, Nason) ; Joliet, Will Co. (Ferriss) ; 

 Algonquin, McHenry Co. (Nason). 



Suecinea retusa Lea (=ovalis Gould, calumetensis Calkins). 



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

 (Calkins); La Salle Co. ( Calkins, Huett); Kankakee River 

 (Ferriss); Joliet, Will Co. (Ferriss, Handwerk ); Washington 

 and Winnebago counties (Hinkley); Crystal Lake, McHenry 

 Co. (Lyon); Mercer Co. (Marsh); Algonquin, McHenry Co. 

 (Nason) ; Glen Ellyn, Du Page Co. (Woodruff); Quiver and 

 Matanzas lakes, and Illinois River, Havana, Mason Co. ; Cedar 

 Lake, Lake Co. ; Flag and Thompson's lakes, Fulton Co. ; 

 Peoria, Peoria Co. ; Normal, McLean Co. (State Laboratory). 



Suecinea retusa magister Pilsbry. 



Cook Co. (Baker) ; Rock Island (Pilsbry). 



Suecinea retusa peoriensis Wolf. 



Kankakee River (Ferriss) ; Peoria Co. (Wolf). 



Suecinea avara Say ( =vermeta Say, wardiaua Lea). 



Oregon, Ogle Co. (Baker ) ; Cook Co. (Baker, Higley) ; North- 



