115 



Tower, Jackson Co. (WoodruH); Cypress Swamp, .Joliiison Co. 

 (State Laboratory). 



Poh/gyra fallax Say (= introfevens Binney). 



La Salle Co. (Calkins); Knox Co. (I^yon). 

 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. 

 Polygi/ra Intiefia Say. 



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

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

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

 PoJyf/yrn profunda Say. 



Oregon, Ogle Co. ( Baker) ; ( 'ook 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 ( Ullfers) ; Fulton 

 Co. (Wolf). 

 Polyyyra profunda aiha Witter. 



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

 Polygyra ■sayli Binney ( = dlodonta Say). 



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



Polygyra allxdohrh Say. 



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

 nois (Calkins); La Salle Co. (('alkins, Ferriss, Huett): .loliet. 

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

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

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

 Southern Illinois (Ulfi'ers); (Irand Tower, .lackson Co- 

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

 Laboratory). 



Polygyra alholahris trarcraensis Leach. 



Summit, (^ook Co. (Zetek). 

 Polygyra nlbolahris denial <( Tryon. 



Cook Co. ( Baker). 



