105 



Lymncea caperata umbilicata Adams. 



Oook Co. (Baker, Jensen, Nason) ; Joliet, Will <'<>.: Des- 

 plaines River (Ferriss) ; Kankakee Co. (Marsh). 

 Lymncea pall id a Adams. 



Northern Illinois (Calkins); La Salle Co. (Huett); Winne- 

 bago Co. (Marsh). 

 Lymncea palustris Midler (= elodes Say, umbrosa Say, suMatus Calk- 

 ins).* 

 Cook Co. (Baker, Calkins, Nason); Northern Illinois (Calk- 

 ins); Desplaines River (Ferriss); Winnebago Co.; Canton, 

 Fulton Co. (Hinkley, Marsh) ; Mercer and Lake counties 

 (Marsh) ; Silver Lake, McHenry Co. (Nason) ; Southern Illinois 

 (Ulffers, as fragilis); Havana, Mason Co. (Walker); Fulton 

 Co. (Wolf); Urbana, Champaign Co.; Flag Lake, Fulton Co. ; 

 Quiver Lake, Havana, Mason Co. ; Peoria, Peoria Co. ; Cedar, 

 Fourth, and Pistakee Jakes, Lake Co. (State Laboratory). 



Lymncea palustris michiganensis Walker. 



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

 Winnebago Co. (Hinkley); Havana, Mason Co. (State Labo- 

 ratory ) . 



Lymncea re/fexa Say ( --zebra Tryon). 



Cook Co. (Baker, Calkins, Lyon, Nason); Northern Illinois 

 (Calkins) ; Joliet, Will Co. ; Desplaines River (Ferriss, Hand- 

 werk) ; Pecatonica, Winnebago Co. (Hinkley) ; Kappa, Wood- 

 ford Co. (Hart); La Salle Co. (Huett) ; Mercer Co. (Marsh) ; 

 Silver and Crystal lakes and Algonquin, McHenry Co. ; Mason 

 Co. (Nason); Southern Illinois (Ulffers); Fulton Co. (Wolf); 

 Quiver Lake, Havana, Mason Co. ; Clear and Cedar lakes, Lake 

 Co. ; Thompson's Lake, Fulton Co. ; Normal, McLean Co. ; Run- 

 ning Lake, Union Co. ; McHenry Co. (State Laboratory). 



Lymncea -.re Hexa exilis Lea (= kirtlandianal&a,, lanceata Gould). 



Cook Co. (Calkins) ; Mercer Co. ; Desplaines River (Ferriss) ; 

 Winnebago Co. (Hinkley) ; Will Co. (Marsh); Algonquin and 

 Silver Lake, McHenry Co. (Nason); Aledo, Mercer Co. 

 (Walker); Cedar Lake, Lake Co.; Northern Illinois (State 

 Laboratory). 



*Lymnxa palustris nuttalliana and Lymnsea palustris expansa, recorded in The Mol- 

 lusca of the Chicago Area, Part II., pp. 276, 277, prove to be forms oipalustris. 



