113 



Family COCBXICOPIDJ::. 



Genns Cochiicopa (Fevussaci PMsso. 

 Corhlv'opn bibrira iliiller. 



Cook Co. (Baker. Hiirlev) : Wilmington. "Will Co. (Ferriss): 

 McHenry Co. ( Marsh) : Algonquin, MeHenry Co. (Nason). 



HETERURETHRA. 



Superfamily Ela.smogxatha. 



Family SUCCINEID.F. 



Genus ScccrsEA Draparnaud. 

 Suecinen oralis Say ( =oMiqva .Sayf. 



Oregon. Ogle Co.: Cook Co.: -^avanna, Carroll Co. (Baker): 

 Northern Illinois i Calkins i: Fox River (Calkins. Ferriss i: La 

 Salle Co. ( Calkins. Huett i : Joliet. Will Co. : Bristol. Kendall Co. 

 (Ferriss, Handwerk): Quincy, Adams Co. (Harti: Will Co. 

 ( Marsh i : Carpentersville. Kane Co. : Algonquin. McHenry Co. 

 ( Nason I : Fulton Co. (Wolfi: Matanzas Lake. Ha%ana. Mason 

 Co. (State Laboratory ». 



Suceinea oralis totteniona Lea. 



Cook Co. (Baker. .Jensen. Nason ( : .Joliet. Will Co. ( Ferriss i : 

 Algonquin, McHenry Co. (Xason). 



Suceinea retusa Lea ( =oralis Gould, calumetensis Calkins). 



Cook Co. (Baker. Calkins. .Jensen. Lyon): Northern Illinois 

 (Calkins i: La Salle Co. (Calkins. Huett): Kankakee River 

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

 and Winnebago counties (Hinkley): Crystal Lake. MeHenry 

 Co. (Lyon): Mercer Co. i Marsh): Algonquin, McHenry Co. 

 (Xason) ; Glen Ellyn. Du I'age Co. (Woodruff): Quiver and 

 Matanzas lakes, and Illinois River. Havana. Mason Co. : (.'edar 

 Lake. Lake Co. : Flag and Thompson's lakes. Fulton Co. : 

 Peoria. Peoria Co.: Normal. McLean Co. (State Laboratory). 



Suceinea retusa magister Pilsbry. 



Cook Co. (Baker): Rock Island i Pilsbry). 



Suceinea retusa peoriensis Wolf. 



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



Suceinea arara Say ( =rermeta Say, icarJiana Lea). 



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



