lOG 



Lyiiiincn retfe:i'a jollcfeDsis Baker. 



Hock Run, Joliet, Will ('o. (Ferrissj ; Elgin, Kane Co.; Crys- 

 tal Lake, McHenry Co. (Nason). 



LijniiKid r( tJe.ni iriilkcri Baker ( ^scahrris Walker, 1892, not Van den 

 Broeck, 1870). 

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

 quin, McHenry Co. (Nason). 

 LymiKi'aretfi'xa ioweiis'ts Baker. 

 Joliet, Will Co. (Ferriss). 



LytiiiM-a veHexa cri/stnlcnxis Baker. 



Crystal Lake, McHenry (lo. (Lyon) : Flint Creek, McHenry 

 Co. ; Mason Co. (Nason). 



Subfamily PLANORBIN.1E. 



Genus Planorbis Miiller. 

 Subgenus I'lanorhis s.s. 

 Section I'hniDrliinti HalJeman. 

 J'lfdiorbis glahi'cftu.s- Say. 



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

 Fecatonica River (Hinkley); La Salle Co. (Huett) ; Cypress 

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

 White Co. (State Laboratory). 



Subgenus HeUsoma Svvainson. 

 Section Hetimaia Swainson. 

 PUt))orhis hicarinntus 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 Co. 

 (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 (]o. ; Pope 

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

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

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

 McHenry Co. (Nason). 



