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

 wick Creek, Perry Co. ; Fox, Clear, Sand, and I'istakee lakes, 

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

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

 Co. (State Laboratory). 



Canipeloma suhsolldum 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 Canvpeloma in'desli Lea from Mercer Co., 

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

 the state of Michigan this citation must be understood to mean 

 variety ex'dis. 



Family VALVATID^. 

 Genus Valvata Miiller. 



Valvafa sinccra 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 h-ivlsii Currier ( = s'lncern of authors, not of Say). 



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

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

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

 Lake Co. (State Laboratory). 



Valvata tricarinata Say. 



Cook C'O. (Baker, (Jalkins, Nason) ; Northern Illinois (Calk- 

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

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

 La Salle Co. (Huett) ; Lake Co. (.lensen) ; ( 'rystal Lake, McHen- 

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

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

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

 Cedar, Fourth, Sand, Fox, Long, and Pistakee lakes. Lake ('o. ; 

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

 Co. (State Laboratory). 

 Valvata tricarinata ronfusa Walker. 



.loliet. Will Co. (Ferriss); Lake Co. (.Jensen); Long iiuke. 

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



