114 



erii Illinois, Illinois River (Calkins); La Salle (Jo. (Calkins, 

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

 Hardin counties (Hinkley); Mercer Co. (Marsh); Elgin, Kane 

 Co.; Algon((uin, Mcllenry Co. (Nason) ; Starved Kock, La Salle 

 Co. (Oakes); Fulton Co. (Wolf); Herod, Pope Co. (State 

 Laboratory ) . 



iSueeinea nuttalliana Lea. 



Rockford, Winnebago Co. (Hinkley); Fulton Co. (Wolf). 



Sticcinea fiiyglns! Bland. 



Rock Island Co. (Marsh). 



Succinea concord! alls Gould. 



Du Bois, Washington Co. (Hinkley). 



Succinea grosvenorii Lea {^mooresian.a Lea). 

 Canton, Fulton Co. (Nason, Wolf). 



Succinea aiirea Lea. 



Effingham Co. (Marsh). 



Succinea illiitoisensis Wolf. 



Canton, Fulton Co. (Handwerk); Fulton Co. (Marsh). 



SIGMURETHRA. 



Superfaniily Holopoda. 

 Family HELICID^. 



Subfamily POLYGYRINjB. 



Genus Folygyra (Say) Pilshry. 

 Section I'dhiriiini x..*. 

 Polygyra Ivpovina Gould. 



Jackson and Hardin counties (Hinkley) ; .Jackson Co. (Marsh). 



Section IViiiilii/ixis Ratinesqne. 

 Polygyra tridentata Say. 



Near Berry Lake, Chicago, Cook Co. (Higley): Hancock Co. 

 (Marsh) ; Southern Illinois (Ulti'ers) ; Golconda, Pope Co. (State 

 Laboratory). 

 Polygyra ti'ideiitata ju.vtigeiis Pilsbry. 



La Salle Co. (Calkins) : (^ook Co. (Higley). 

 Polygyra fraudtilenta Pilsbry (= fallaj; of authors, not of Say). 



La Salle Co. (Calkins); Lemont, Cook Co. (Higley); Pope 

 and Hardin counties (Hinkley); Union Co. (Lyon); Grand 



