List of the Mollusca of Missouri. 81 



River, Cape Galena, Morgan Co. (12) ; Peirce 

 City, Lawrence Co. (10) ; Center Creek, Sar- 

 coxie, Jasper Co. (7) ; Grand Falls, Jasper Co. 

 (2); Cow Skin River, Macdonald Co. (2). 



46. Ancyltjs rivularis Say. 



Jasper Co. (8); Peirce City, Lawrence Co. (3). 



Planorbin-e. 

 planorbis Miiller. 



47. Planorbis bicarinatus Say. 



Flat Creek, Pettis Co. (25) ; Pond, Flat Creek 

 (12); Crandall's fountain, Sedalia, Pettis Co. 

 (13) ; Cooper Co. (3) ; Lamar, Barton Co. (1) ; 

 Lake, Mountain Grove, Wright Co. (2) ; Spring 

 branch, Hannibal, Marion Co. (23) ; Callaway 

 Co. (Greger); Blees Academy lake, Macon, 

 Macon Co. (13). 



48. Planorbis trivolvis Say. 



Flat Cr^k, Pettis Co. (15) ; Pond, Pettis Co. 

 (6); Pond, E. Brown's, Pettis Co. (7); Pin 

 Hook, Muddy Creek, Pettis Co. (4) ; Cave 

 Spring, Morgan Co. (8) ; Roaring River, Barry 

 Co. (9) ; Lake, Mountain Grove, Wright Co. 

 (7) ; Pond, Current River, Van Buren, Carter 

 Co. (7) ; Branch, Spring River, Carthage, Jas- 

 per Co. (6) ; Stream, Peirce City, Lawrence 

 Co. (10) ; Lake, Peirce City (15) ; Nevada, Ver- 

 non Co. (5) ; Daviess Co. (6) ; Cooper Co. (7) ; 

 Swamp, Scott Co. (6) ; Springfork Creek, Cam- 

 den Co. (14); Grand Falls, Jasper Co. (3); 

 Lake, Clinton, Henry Co. (13) ; Callaway Co. 

 (Greger) ; Blees Academy lake, Macon, Macon 

 Co. (9). 



Postpliocene : — Bluff City Landing (Hambach). 



