64 



Genus Micromya (Agassiz) .Simpson. 



Microinya r'abalis Lea. 



Wabash River (Marsh). 



Genus Lampsilis Rafinesque. 

 Subgenus Lampsilis Rafinesque. 

 Section LauipsiUs Rafinesque. 

 Lampsilis vcntricosa Barnes {= occidens Lea, subovata Lea).* 



Oregon, Ogle Co. ; Starved Rock, La Salle Co. ; Savanna, Car- 

 rol' Co. (Baker): Cook Co. (Baker, Calkins) : Northern Illinois; 

 Fox River (Calkins); Dundee, Kane Co. (Englehohn, Nason) ; 

 Hickory Creek ; Kaskaskia River (Ferriss, Handwerk) ; Du Page 

 River; Illinois River (Handwerk); Mississippi L^iver, Quincy, 

 Adams Co. ; Mackinaw River, Kappa, Woodford Co. (Hart); 

 Winnebago Co. ; Ohio River: Kaskaskia River (Hinkley) ; La 

 ,. Salle Co. (Huett): Fulton Co. (Kelly, Wolf): Mercer Co.; 

 ;.. Ohio River; Mississippi River (Marsh); Athens, Menard Co. 

 . (Nason); Mt. Carmel, Wabash Co. (Nelson); Spoon River 

 (Strode); Southern Illinois (Ultfers); Embarras River, Oak- 

 land, Coles Co. ; Quiver Creek, Havana, Mason Co. (State Lab- 

 oratory). 

 Lampsilis capax Green. 



Northern Illinois; Mt. Carmel, Wabash Co. (Calkins); Mer- 

 cer Co. (Ferriss, Marsh) ; Shawneetown, Gallatin Co. (Fischer) ; 

 Quincy, Adams Co. (Hart); La Salle Co. (Huett); Mississippi 

 River (Marsh) ; Spoon River, Fulton Co. (Strode) ; Southern 

 Illinois (Ulllers): Fulton Co. (Wolf). 

 Lampsilis ovata Say. 



Ohio River (Marsh). 



Lampsilis multlradiata Lea. 



Cook Co. (Baker); Illinois (Call): Dundee, Kane Co. (En- 

 glehohn); Big A'ermilion River (Marsh); Southern Illinois 

 (Ulffers). 



*LainpfiVts niriosd Say is reported by Huett from La Salle connty. The reference 

 was undoubtedly founded on specimens of ti'iilricu.v(, as cariumi is a species of the 

 Atlantic and St. Lawrence drainage. 



