100 



La Salle Vo. (Huett) ; Mercer Oo. (Marsh) : Fox River; Algon- 

 quin, Flint Creek and Crystal and Silver lakes, McHenry (1o. 

 (Nason) ; Quincy, Adams Co.; Quiver and Matanzas lakes, and 

 Illinois River, Havana, Mason C!o. ; Grand Pierre Creek, Herod, 

 Pope Co. ; Normal, McLean Co.; Peoria, Peoria rV>. ; Polecat 

 CJreek, Ashmore, Coles Co. ; Cypress ( Jreek, Grantsburg, Johnson 

 Co. ; Urbana, Champaign Co. ; Union Co. ; Lake Michigan, 

 Chicago, Cook (!o. (State Laboratory). 



Phi/sa (jyriiia oleaeea Tryon (= e/liptiea of authors, not of Lea). 



Cook Co.; Northern Illinois (Baker, Nason) ; Quincy, Adams 

 Co. (Hart); Little Muddy River (Hinkley) ; Algonquin, Mc- 

 Henry (!o. ; Quincy, Adams Co. ; Athens, Menard Co. (Nason) ; 

 Miller's Pond, Union Vo. ; Saline Oo. ; Peoria, Peoria Co. ; Pekin, 

 Tazewell C!o. ; Pistakee and Fourth lakes. Lake Co. ; Dixon, Lee 

 Co.; Havana, Mason Co. (State Laboratory). 



Physa gyrina hildrethiona Lea. 



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

 Salle Co. (Huett) ; a lake in Illinois (Lea) ; ('anton, Fulton Co. 

 (Lewis) ; Fulton Co. (Marsh, Wolf); Elgin, Kane Co. ; Crystal 

 Lake, McHenry Co.; Athens, Menard Co. (Nason). 



Physa integra Haldeman ( = )iiagarensis Lea). 



Savanna, Carroll Co. (Baker); Oregon, Ogle Co.; Cook Co. 

 (Baker, Nason) ; De Soto, Jackson Co. ; Du Bois, Washington 

 Co.; Rockford, Winnebago Co.; Big Muddy River ( Hinkley) ; 

 Elgin, Kane Co.; Crystal and Silver lakes and Algonquin, 

 McHenry Co. (Nason) ; Blue Mound, Macon Co. ; Peoria, Peoria 

 Co. ; Pistakee, Fox, Cedar, Sand, and Fourth lakes. Lake Co. ; 

 Quiver and Matanzas lakes, and Illinois River, Havana, Mason 

 Co. ; Lake Michigan, ('hicago. Cook Co.; Bluff Lake, Anna, 

 Union Co. ; Pekin Lake, Tazewell Co. ; Flag Lake, Fulton Co. ; 

 Cedar Creek, Quincy, Adams Co. (State Laboratory). 



Physa walker/ Crandall. 



Rockford, Winnebago Co. (Hinkley); Elgin, Kane Co. 

 (Nason). 



Physa craiKhiUi Baker ( = rhomhoidi-a ('randall, 1901, not Meek and 

 Hayden, isr)(i). 

 Big Muddy and Saline rivers; Jellerson Co. (Hinkley): 

 Athens, Menard Co. (Nason). 



