NORTH AMERICAN CONCIIOLOGY. 



23 



Rogers. — Analysis of Shells (recent Oyster) : by William P>. 

 Rogers, Prof, of Chem. and Nat. Phil, in William and Mary 

 College, Ya. [From same as last, p. 3G1.] 



Conrad. — Description of some New Species of Fresh-water 

 Shells from Alabama, Tennessee, Ac. : by Timothy A. Conrad, 

 Member of the Acad. Nat. Sci. of Philadelphia. (Am. Journ. 

 Sci. and Art. vol. xxv, No. 2, 0. S. Date of title, Jan. 18340 



Name. 

 Unio coelatus Conrad. 

 perovatus Conrad. 



lienosus Conrad. 



rubiginosus Lea (no des.) 



strarnineus Conrad. 



arc us Conrad. 



arctatus Conrad. 

 Alasmodonta radiata Conrad. 

 Anodonta subvexa Conrad. 



declivis Conrad. 



Cycxas staniinea Conrad. 

 Melania olivula Conrad. 



prasinata Conrad. 

 Anculosa picta Conrad. 

 Unio subtentus Say var. 



mytilloides Ilaf. 

 Planorbis antrosus Conrad. 



Melania congesta Conrad. 

 Physa pomilia Conrad. 



Locality. 



Elk & Flint ri vs., Tenn. 



Prairie creek, Marengo 

 Co., Ala. 



South Alabama. 



South Alabama. 



South Alabama. 



Alabama river. 



Bl. "Warrior & Ala. rivs. 



South Alabama. 



Black Warrior river. 



Flint river, Morgan Go. 

 Ala. 



South Alabama. 



Alabama river. 



Alabama river. 



Alabama river. 



Tennessee and Elk rivs. 



Alabama river. 



Randon's creek, Clai- 

 borne, Ala. 



Randon's creek, do. 



Randon's creek, do. 



Conrad. — New Fresh-water Shells of the United States, with 

 colored illustrations, and a Monograph of the genus Anculotus 

 of Say; also, a Synopsis of the American Naiades: by T. A. 

 Conrad, Memb. Acad. Nat. Sci. Philadelphia. Philadelphia, 

 1S34. 



