106 



Lymncea reilexa jolietensis Baker. 



Rock Run, Joliet, Will Co. (Ferriss) ; Elgin, Kane Oo. ; Crys- 

 tal Lake, McHenry Oo. (Nason). 



Lymncea reilexa walkeri Baker (=sealaris Walker, 1892, not Van den 

 Broeck, 1870). 

 Cook Co. (Baker, Nason): Joliet, Will Co. (Ferriss); Algon- 

 quin, McHenry Co. (Nason). 



Lymncea reif>exa iowensis Baker. 

 Joliet, Will Co. (Ferriss). 



Lymncea reilexa cry stalensis Baker. 



Crystal Lake, McHenry Co. (Lyon); Flint Creek, McHenry 

 Co. ; Mason Co. (Nason). 



Subfamily PLANORBINiE. 



Genus Planorbis Muller. 



Subgenus Planorbis s.s. 



Section Planorbina Haldeman. 



Planorbis glabratus Say. 



Northern Illinois (Calkins): Winnebago Co.; Mercer Co.; 

 Pecatonica River (Hinkley): La Salle Co. ( Huett) ; Cypress 

 Creek, Johnson Co. ; McHenry Co. ; Hamilton Co. ; Hawthorne, 

 White Co. (State Laboratory). 



Subgenus Helisoma Svvainson. 



Section Helisoma Swainson. 



Planorbis bicarinatus Say. 



Cook Co. (Baker, Calkins, Higley, Jensen, Nason) : Northern 

 Illinois (Calkins): La Salle Co. ( Calkins, Huett) ; Desplaines 

 River (Ferriss) ; Kappa, Woodford Co. (Hart) ; common 

 throughout the state (Hinkley): Crystal Lake, McHenry Oo. 

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

 McHenry Co. : Mason Co. (Nason ) ; McHenry Co. (Stearns) ; Ful- 

 ton Co. (Wolf) : Illinois River and Dogfish, Quiver, and Matan- 

 zas lakes and Slough, Havana, Mason Co. ; Fourth, Sand, Cedar, 

 Fox, Pistakee, Clear, Long, and Slough lakes, Lake Oo. ; Pope 

 Oo. ; Johnson Co. ; Thompson's Lake, Fulton Co. ; Milan, Rock 

 Island Co.; Panola, Woodford Co.: Pekin, Tazewell Co. (State 

 Laboratory). A white variety from Crystal and Silver lakes, 

 McHenry Co. (Nason). 



