91 



Co. (Nason); Fulton Co. (Wolf); Quincy, Adams Co.; Swan- 

 wick Creek, Perry Co. ; Fox, Clear, Sand, and Pistakee lakes, 

 Lake Co. ; Fulton Co. ; Meredosia, Morgan Co. ; Crab Orchard 

 Creek, Williamson Co. ; Peoria, Peoria Co. ; Havana, Mason 

 Co. (State Laboratory). 



Campeloma subsolidum exilis Anthony. 



Chicago, Cook Co. (Calkins, Higley) ; Northern Illinois (Calk- 

 ins) ; Mercer Co. (Marsh); Quincy, Adams Co. (Nason); Illi- 

 nois River (Walker) ; Fulton Co. (Wolf). 



Call has recorded Campeloma miles it Lea from Mercer Co., 

 but as no authentic milesii have as yet been found outside of 

 the state of Michigan this citation must be understood to mean 

 variety exilis. 



Family VALVATLD^E. 



Genus Valvata Miiller. 



Valvata sincera Say. 



Although no authentic Illinois records of this species have 

 been seen, it is deemed best to include it in this list as it un- 

 doubtedly inhabits Northern Illinois. 



Valvata lewisii Currier ( = sincera of authors, not of Say). 



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

 Illinois (Calkins) ; La Salle Co. (Huett) ; Jo Daviess Co. 

 (Marsh) ; Lake Michigan, Chicago, Cook Co. ; Long Lake, 

 Lake Co. (State Laboratory). 



Valvata tricarinata Say. 



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

 ins) ; Desplaines River, Joliet, Will Co. (Ferriss) ; Quincy, 

 Adams Co. (Carman) ; Rockford, Winnebago Co. (Hinkley) ; 

 La Salle Co. (Huett) ; Lake Co. (Jensen) ; Crystal Lake, McHen- 

 ry Co. (Lyon) ; Mercer Co. (Marsh) ; Algonquin and Silver 

 Lake, McHenry Co.; Athens, Menard Co. (Nason); Fulton Co. 

 Wolf) ; Quiver Lake and Quiver Creek, Havana, Mason Co. ; 

 Cedar, Fourth, Sand, Fox, Long, and Pistakee lakes, Lake Co. ; 

 Thompson's Lake, Fulton Co.; Lake Michigan, Chicago, Cook 

 Co. (State Laboratory). 



Valvata tricarinata confusa Walker. 



Joliet, Will Co. (Ferriss); Lake Co. (Jensen); Long Lake, 

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



