92 



Valvata Vicarinata Lea. 



Desplaines River : Lake Michiiian, Cook Co. (Baker); Rock 

 River (Ferriss) ; .Toliet, Will Co. (Ferriss, Handwerk) ; Saline 

 River; Elizabethtown, Hardin Co. (Hinkley) ; Lake Co. (Jen- 

 sen) ; Mercer Co. (Marsh); Lone;, Sand, and Pistakee lakes, 

 Lake Co.; Slough, Havana, Mason Co. (State Laboratory). 

 Valvata hicarinata, perdepi-essa Walker. 



Lake Michigan, Chicago, Cook Co. (Baker, Jensen, Lyon). 

 Valvata hicarinata normalis Walker. 



Joliet, Will Co. (Ferriss); Willow Springs, Cook <^o. (Hand- 

 werk) ; Quincy, Adams Co. (Hart) ; Lake Co. (Jensen) ; Crys- 

 tal Lake, McHenry Co. (Lyon) ; Cedar, Fox, Long, and Pistakee 

 lakes. Lake Co; Quiver and Matanzas lakes and Havana, Mason 

 Co.; McHenry Co; Fulton Co. (State Laboratory), 



Family AMNICOLID^. 



Subfamily BYTHINIINiE. 



Genus Bythinia Gray. 

 Bythlnia tentacidata Linne. 



Cook Co. (Baker, Jensen, Lyon). 



Subfamily HYDROBIINiE. 



Genus Amnicola Gould and Haldeman. 



Amnicola limosa Say. 



Savanna, Carroll Co. (Baker, Nason) ; Cooli Co. (Baker, Calk- 

 ins, Jensen, Lyon) ; Du Page River (Ferriss) ; (Juincy, Adams 

 Co. (Garman) ; Northern Illinois; Mercer Co. (Marsh); Algon- 

 quin, McHenry Co.; Elgin, Kane Co. (Nason): Fulton Co. 

 (Wolf) ; Cedar, Pistakee, Fox, Long, and Sand lakes, Lake Co.; 

 Lake Michigan, Chicago, Cook Co. ; Clear and (^)uiver lakes, and 

 Illinois River, Mason Co. ; Flag and Thompson's lakes, and Spoon 

 Kiver, Fulton Co. (State Laboratory). 



Amnicola limosa porata S&y (= orblculata Lea). 



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

 Kankakee and Du Page rivers (Ferriss) ; La Salle Co. ( Huett) ; 

 Macoupin and Mercer counties (Marsh) ;Canton, Fulton Co. ;Rock 

 Island, Hock Island Co. (Nason); Fulton Co. (Wolf); Lake 

 Michigan, CJhicago, Cook Co. ; Fox Lake, Lake Co. ; (^>uiver Lake, 

 Havana, Mason Co. (State Laboratory), 



