96 



JAthaa'id ohordtd JSay. 



Ohio River (Marsh). 



(tpiuis 1'lkuroi'Eha Kalin('s(iuo. 



Phuroccrd nlrcaiw Conrad (—jiupcra Say I. 



Little Wahasli and Saline rivers (Hinkley); Ohio Kiver 

 (Marsh) ; Southern Illinois (Ulfl'ers). 



Pleiirocera canalicnhdnin Say. 



Wabash and Ohio rivers (Hinkley) ; Wabash River (Marsh) ; 

 Mt. Carniel, Wabash Co. (Nelson); Southern Illinois (Differs); 

 (iolconda, I'ope <'o.: Saline River, Saline (!o. (State Labora- 

 tory ) . 



PlcnTOcevn eJcrdtnui Say. 



Cook Co. (Baker, .Jensen) ; Joliet, Will Co. ; Kankakee River 

 (Ferriss, Handwerk) ; Kishwaukee and Kaskaskia rivers 

 (Hinkley): Illinois River (Marsh); Spoon River (Strode); 

 Peoria, Peoria Co.; Pekin Lake, Tazewell (Jo. ; Golconda, Pope 

 Co. : Saline River, Saline ('o. ; Kaskaskia River, Bartelso, Clin- 

 ton Co. ; Pistakee Lake, Lake Co. ; Skillet Fork, Wayne Co. ; 

 Duncan's Mills and Bernadotte, Fulton Co.; Little Muddy 

 River, Franklin Co. ; Havana, Mason Co. ; Kishwaukee River, 

 Winnebago Co. ; Carlyle, (Minton Co. ; Lake Michigan, ( 'hicago, 

 t'ook Co. (State Laboratory). 



Pleurocerd elei'dtuin lewisii Lea. 



Northern Illinois; Fox River (Calkins) ; Utica, La Salle Co.; 

 •Joliet, Will Co. ; Kankakee River(Ferriss) ; Quincy, Adams Co. 

 (Hart); La Salle Co. (Huett) ; Peoria Co. (Lea, Lewis, Marsh. 

 Tryon) ; Illinois River; Canton, Fulton Co. (Nason) ; Spoon 

 River (Strode) ; Fulton Co. (Wolf) ; Peoria, Peoria Co. ; Quiver 

 and Matanzas lakes, and Illinois River, Havana, IMason Co. ; 

 Pekin Lake, Tazewell Co. ; Thompson's Lalce, Fulton Co. ; Milan, 

 Rock Island (Jo. (State Laboratory). 



Phurocern Horencense Lea. 



Wabash River (Marsh). 



Pleurocerd lesleyi Lea. 



Ohio River (Marsh). 

 Pleurocerd moiilliferum Lea. 



Wabash, Little Wabash, Saline, and Ohio rivers (Hinkley, 

 Marsh) ; Ohio River (Lea). 



