110 



Suborder STYLOMMATOPHORA. 



MONOTREMATA. 



Vasopulmonata. 

 ORTHURETHRA. 



Family VALLONIID/E. 

 Genus Vallonia Risso. 



Vallonia pulchella Miiller ( = Helix minuta Say). 



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

 Handwerk); Mercer Co. (Marsh) ; Elgin, Kane Co. ; Algonquin, 

 McHenry Co. (Nason); Fulton Co. (Wolf). 



Vallonia costata Miiller. 



La Salle Co. ( Calkins) ; Rock Island Co. (Marsh ) ; Algonquin, 

 McHenry Co. (Nason). 



Vallonia parvula Sterki. 



Joliet, Will Co. (Ferriss, Handwerk); Algonquin, McHenry 

 Co. (Nason): Will Co. (Sterki). 



Family PUPLEvE. 

 Genus Strobilops Pilsbry. 



Strobilops labyrinthica Say. 



Cook Co. (Baker, Jensen); Northern Illinois (Calkins) ; La 

 Salle Co. (Calkins, Huett) ; Utica and Sheridan. La Salle Co. 

 (Ferriss); Winnebago and AVashington counties (Hinkley): 

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

 Co.; Athens, Menard Co. (Nason) ; Southern Illinois (Ulffers) ; 

 Fulton Co. (Wolf). 



Strobilops afiinis Pilsbry. 



Oregon, Ogle Co. ; Evanston, Cook Co. (Baker); Algonquin, 

 McHenry Co. (Nason). 



Strobilops virgo Pilsbry. 



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



Genus Pupoides Pfeiffer. 



Pupoides marginata Say (=fallax Say of American authors, not 

 of Say)'. 



Oregon, Ogle Co. (Baker); Northern Illinois (Calkins); La 

 Salle Co. (Calkins, Huett) : Joliet, Will Co. (Ferriss, Hand- 



