U. basalis, Lea. Carter's creek, (Ga.) 



" bellulus, Lea. Tennessee drainage. 



" biemarginatus, Lea. " " 



" Bigbyensis, Lea. " 



" Binneyi, Lea. " Alabama." (Lea.) 



" Blandianus, Lea. Coosa river. 



" Boykinianus, Lea. Alabama, Chattahoochee and Coo- 

 sa rivers ; Buck creek. 



" brevidens, Lea. Tennessee drainage. 



" Brumbyanus, Lea. " Warrior river." 



" cselatus, Conrad. Tennessee drainage. 



" Cahabensis^-Lea. Cahawba river. 



" camelopardilis, Lea. Tennessee drainage. 



" camelus, Lea. " " 



" camptodon, Say. Coffee creek and Big Prairie 

 creek. 



" caperatus, Lea. Tennessee drainage. 



" capsseformis, Lea. " " 



" castaneus, Lea. Alabama river. 



" Chattanoogaensis, Lea. Coosa and Cahawba rivers ; 

 Bogue Chitto creek. 



" Chunii, Lea. Near Selma. 



" circulus, Lea. Tennessee drainage. 



" circumactus, Lea. Tennessee drainage. 



" Claibornensis, Lea. Alabama river. 



" Clarkianus, Lea. Tennessee drainage. 



" clavus, Lamarck. " " 



" Clinchensis, Lea. 



" compactus, Lea. Coosa and Cahawba rivers ; Buck 

 creek. 



" concestator, Lea. Chattahoochee river. 



" concolor, Lea. Big Prairie creek; Buck creek; Ca- 

 hawba river. 



" Conradianus, Lea. Tennessee drainage. 



" consanguineus, Lea. Alabama, Coosa and Cahawba 

 rivers. 



" Cooperianus, Lea. Tennessee drainage. 



" corneus, Lea. Chattahoochee tributaries. 



