115 



Tower, Jackson Co. (Woodruff); Cypress Swamp, Johnson Co. 

 (State Laboratory). 



Polygyra fallax Say ( = introf evens Binney). 



La Salle Co. (Calkins); Knox Co. (Lyon). 



Two undoubted specimens of this species are in the collection 

 of the Chicago Academy of Sciences, received from Mr. W. 

 W. Calkins. As the locality is somewhat north of its known 

 range the record from La Salle Co. must be looked upon with 

 suspicion until verified. 



Polygyra inffeeta Say. 



Northern Illinois (Calkins) ; Cook Co. (Higley) ; Jackson Co. 

 (Hinkley, Woodruff); Wabash Co. (Marsh); Cypress Swamp, 

 Johnson Co.; Grand Tower, Jackson Co. (State Laboratory). 



Polygyra profunda Say. 



Oregon, Ogle Co. (Baker) ; Cook Co. (Baker, Higley, Jensen ) ; 

 Northern Illinois (Calkins) ; La Salle Co. (Calkins, Huett) ; 

 Joliet, Will Co. (Ferriss, Handwerk, Nason) ; Winnebago Co. 

 (Hinkley); Mercer Co. (Marsh); Rock Island (Nason); Spoon 

 River, Fulton Co. (Strode); Southern Illinois (Ulffers); Fulton 

 Co. (Wolf). 



Polygyra profunda alba Witter. 



Cook Co. (Baker); Joliet, Will Co. (Ferriss). 



Polygyra sayii Binney ( = diodonta Say). 



Northern Illinois (Calkins); Edgar Co. (Marsh). 



Polygyra albolabris Say. 



Cook Co. (Baker, Higley, Jensen) ; Fox River; Northern Illi- 

 nois (Calkins); La Salle Co. (Calkins, Ferriss, Huett); Joliet, 

 Will Co. (Ferriss, Handwerk); Marion Co. (Hinkley); Mercer 

 Co. (Marsh) ; Algonquin, McHenry Co. ; Elgin, Kane Co. ; 

 Athens, Menard Co. (Nason) ; Spoon River, Fulton Co. (Strode) ; 

 Southern Illinois (Ulffers); Grand Tower, Jackson Co» 

 (Woodruff) ; Normal, McLean Co. ; Cairo, Alexander Co. (State 

 Laboratory). 



Polygyra albolabris traversensis Leach. 

 Summit, Cook Co. (Zetek). 



Polygyra albolabris dent at a Tryon. 

 Cook Co. (Baker). 



