88 



Class GASTROPODA. 

 Subclass Anisopleura. 



Order PROSOBRANCHIATA. 

 Superfamily Rhipidoglossa. 

 Family HELICINID^E. 

 Genus Helicina Lamarck. 



Helicina occulta Lamarck. 



Athens, Menard Co. (Pilsbry); Moline, Rock Island Co. 

 (Shimek). 



Superfamily Tjsnioglossa, 



Family VIVIPARIDvE. 



Genus Vivipara Lamarck. 



Vivipara contectoides W. G. Binney. 



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

 Illinois (Calkins) ; Desplaines River (Ferriss) ; Romeo, Will 

 Co. ; Kankakee and Illinois rivers (Handwerk) ; Quincy, 

 Adams Co. (Hart) ; White Co. (Hinkley) ; La Salle Co. (Huett) ; 

 Mercer Co. ; Henderson Co. (Marsh) ; Mississippi River, Quincy, 

 Adams Co. ; Illinois River (Nason) ; Thompson's Lake, Fulton 

 Co. (Strode) ; Fulton Co. (Wolf) ; Quiver Lake, and Illinois 

 River, Havana, Mason Co. ; Peoria, Peoria Co. ; Warsaw, Han- 

 cock Co.; Pekin Lake, Tazewell Co.; Fulton Co. (State Labo- 

 ratory). 



Vivipara subpurpurea Say. 



Northern Illinois (Calkins) ; Rock Island (Call) ; Mt. Carmel, 

 Wabash Co. (Daniels) ; Utica, in canal, La Salle Co. (Ferriss) ; 

 Quincy, Adams Co. (Garman, Hart) ; Little Wabash, Saline, 

 and Big Muddy rivers (Hinkley) ; La Salle Co. (Huett) ; Pulaski 

 Co. (Lyon) ; Mercer Co. (Marsh) ; Mississippi River, Quincy, 

 Adams Co. (Nason); Southern Illinois (Ulffers, as vivipara) ; 

 Fulton Co. (W T olf) ; Matanzas Lake and Illinois River, Havana, 

 Mason Co. ; Peoria, Peoria Co. ; Pekin Lake, Tazewell Co. ; 

 Thompson's Lake, Fulton Co. (State Laboratory). 



