99 



Subclass Euthyneura. 



Order PULMONATA. 



Suborder BASOMMATOPHORA. 



Superfamily Hygrophila. 



Family PHYSLD^E. 



Genus Physa Draparnaud. 



Physa ancillaria Say (= vinosa of authors, not of Gould). 



Quincy, Adams Co. (Garman) ; tank pond, Du Bois, Wash- 

 ington Co. ; Winnebago Co. (Hinkley) ; Winnebago Co. (Marsh) ; 

 Lake Michigan, Cook Co. (Nason). 



Physa say ii Tappan. 



Cook and Will counties; Northern Illinois (Baker) ; Fox Riv- 

 er; Algonquin, McHenry Co. (Nason); Clear, Sand, and Cedar 

 lakes, Lake Co.; Peoria, Peoria Co.; Urbana, Champaign Co.; 

 Milan, Rock Island Co. ; Havana, Mason Co. ; Northern Illinois 

 (State Laboratory). 



Physa heterostropha Say. 



Cook Co. (Baker, Calkins); Southern Illinois (Binney, Dif- 

 fers) ; Quincy, Adams Co. (Garman); Joliet, Will Co.; Kan- 

 kakee River (Handwerk) ; Saline River; Winnebago, Washing- 

 ton, and Hardin counties (Hinkley) ; Mercer Co. (Marsh) ; Sil- 

 ver and Crystal lakes and Algonquin, McHenry Co. (Nason) ; 

 Thompson's Lake, Fulton Co. (Strode) ; Cedar, Pistakee, and 

 Clear lakes, Lake Co. ; Quiver Lake, Havana, Mason Co. ; Nor- 

 mal, McLean Co.; McHenry Co. (State Laboratory). 



Physa an a tin a Lea. 



Elizabethtown, Hardin Co. (Hinkley) ; Algonquin, McHenry 

 Co. (Nason) ; Quincy, Adams Co. (State Laboratory). 



Physa gyrina Say. 



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

 ins, Lyon, Woodruff) ; Oregon, Ogle Co. ; Savanna, Carroll Co. 

 (Baker, Nason); Du Page River (Ferriss) ; Kankakee River 

 (Handwerk) ; Winnebago, Jefferson, Hardin, and Washington 

 counties; Saline River (Hinkley) ; Fulton Co. (Hinkley, Wolf) ; 



