NOETH AMERICAN CONCHOLOGT. 



185 



Page. Name. 



6Q Unio simus Lea. 

 Q6 Sloatianus Lea. 



66 solidus Lea. 



6Q So-werbianus Lea. 



66 spinosus Lea. 



66 splendidus Lea. 



66 stapes Lea. 



66 stegarius Raf. 



U. irroratus Lea. 



66 Bubinflatus Conrad. 



66 subplanus Conrad. 



66 subrostratus Say. 



U. iris Lea. 



var. U. nebulosus Conrad. 



67 subrotundus Raf. 



U. circulus Lea. 



var. U. lens Lea. 

 67 subtentus Say. 



67 Tampicoensis Lea. 



67 Tappanianus Lea. 



U. viridis Conrad. 

 67 tenebrosus Conrad. 



U. tenerus Raf. 

 67 teres Raf. 



U. anodontoidrs Lea. 

 67 tetralasmus Say. 



67 trapezoides Lea. 



var. U. interruptus Say. 

 67 triqueter Raf. 



U. triangularis Barnes. 



var. U. cuneatus Swains. 

 formosus Lea. 

 67 Troostensis Lra. 



U. iTdhalis Conrad. 

 67 truncatus Raf. 



U. ch'ijuns Lea. 

 67 tuberculatus Raf. 



U. verrucosus Barnes. 



var. U. tuberculosa VaL 

 67 turgidus Lea. 



U. Morto7ii Conrad. 



67 Vanuxemensia Lea. 



68 venustus Lea, 



Locality. 

 . Tennessee. 

 Cliattalioocliie river. 

 Mahoning river. 

 Tenn., Cumberland river. 

 Altamaha river, Hope- 

 ton and Darien, Ga. 

 Altamaha river. 

 Alabama river, 

 Scioto and Oliio rivers. 



Savannah river. 

 Virginia. 

 New York. 



Alabama. 

 Ohio river. 



Tennessee. 

 Tennessee, Alabama. 

 Tampico river. 

 Juniata river. 



Virginia. 



Mississippi & Wabash 



rivers. 

 Bayou St. John. 

 Lake St. Joseph. 

 Louisiana. 

 Falls of Ohio. 



Cumberland river. 



Wabash river, Ohio. 



Harpeth river. 



Ohio river. 

 New Orleans. 



Cumberland river. 

 Potosi, Missouri. 



