89 



V/v/prn'asubpiirpnren fe.rana. Tryon. 



A specimen of this variety is in tiie collection of the ('hicay;o 

 Academy of Sciences labeled "Illinois" and presented by Mr. 

 W. W. Calkins. The reference seems doubtfnl. 



Vii'i [xi I'd iiitertcxtu Suy. 



Savanna, Carroll Co. (Baker) ; Northern and Southern Illinois 

 (Calkins): Mt. Carmel, Wabash Co. (Call, Daniels); Putnam 

 Co. (Ferriss) ; (^)iiincy, Adams Co. ((Tarmaii, Hart) ; Winnebago 

 Co. (Ilinkley) ; Mercer Co. (Marsh) ; Canton. Fulton Co. (Nason, 

 Wolf) ; Thompson's Lake, Fulton Co. (Strode) ; Cypress Swamp, 

 Johnson C'o. ; Havana, Mason Co. ; Flag Lake, Fulton Co. (State 

 Laboratory). 



Genus Lioplax Troschel. 

 LiopUiif suhcarbuiid Say. 



Northern Illinois; Illinois River (Calkins, Nason) ; Kankakee 

 River (Ferriss) ; Mississippi Uiver, Quincy, Adams Co. (Garman, 

 Hart, Nason) ; all rivers visited (Hinkley) ; La Salle Co. 

 (Huett); Pulaski Co. (Lyon); Mercer Co. (Marsh); Canton, 

 Fulton Co. (Nason); Quincy, Adams Co.; Pekin Lake, Taze- 

 welK'o. ; Peoria, Peoria Co. ; Matanzas Lake and Illinois River, 

 Mason Co.; Little Fox Hiver, Phillipstown, ^Vhite Co.; Fulton 

 Co.; Franklin Co. (State Laboratory). 



Genus Campeloma Raflnesque. 



Cainpeloma ponderosum Say. 



Illinois River ( Calkins, Rea) : Waijash and ( )liio rivers (Hink- 

 ley) ; Ohio River (Marsh) ; Southern Illinois (UlHers) ; Chicago, 

 Cook Co. (Velie ). 



Conrad says of this shell (New Fresh-water Shells, p. 12): 

 " A common inhabitant of all the rivers of the west, from the 

 northern districts of Illinois and Indiana to the waters of the 

 Tennessee Valley." The Chicago record rests upon a number 

 of specimens said to have been collected in Calumet River by 

 Dr. J. W. Velie. The specimens are true ponderonuiH and are 

 in the collection of the Chicago Academy of Sciences. 



Campeloma coarctatum ? Lea. 



Cache Creek, Pulaski Co. (Lyon). Sjjecimens of a species of 

 Campeloma submitted to Mr. Bryant Walker, were thought by 

 him tf) be doubtfully this species. 



