56 THE NAUTILUS. 



U. anodontoides Lea. Wetumpka. 



U. iirctatus Con. Mulberry River and Black Warrior River, 

 common. 



U. arcus Con. Wilsonville, Wetumpka and Farmer. 



U. asperatus Lea. Fort William Slioals and Wilsonville, common. 



U. atrocostatus Lea. Black Warrior River, common. Fort 

 William Shoals. 



U. blondianus Lea. Fort Willam Slioals, one specimen. 



U. brumbyanus Lea. Mulberry River, common. 



U. cahaivbaensis Lea. Mulberry River, common. 



U. cerimis Con. Black Warrior River. 



U. chaitanoogaensis Lea. Coosa River, Wetumpka. 



U. chiinii Jje». Coosa River, Wetumpka, one specimen. 



U. conipactus Lea. Coosa River, Wilsonville and Farmer. 



U. cormUiis Bar. Fort William Slioals, Decatur and Wilsonville, 



JJ- corvunculus Lea. Black Warrior River. 



JJ- crassidens Lam. Decatur and Coosa River. 



TJ. ebenus Lea. Decatur. 



U. decisus Lea. Fort William Shoals and Wetumpka. 



U. dolosus hea. Wetumpka, common. 



U. dromas Lea. Decatur. 



U. excavatus Lea. Black Warrior River, common ; Wilsonville, 

 one specimen ; Mulberry River and Wetumpka. 



TJ. Jibuloides Lea. Coosa River, AVetumpka, one specimen. 



U. flavesceris Lea. Black Warrior River, common ; Mulberry 

 River. 



U. foremanianus Lea. Fort William Shoals, common. 



U. gibbosus Barnes. Decatur. 



U. gracilis Barnes. Coosa River, Black Warrior River at War- 

 rior, Mulberry River at Blount Springs. 



U. greenii Con. Mulberry River. 



U. instructus Lea. Black Warrior River, common. 



U. lewisii Lea. Coosa River. Fort William Shoals and We- 

 tumpka. 



U. lienosus Con. Black Warrior River, common. 



U. metanecer Raf. Fort William Shoals, one specimen. 



U. metastriatus Lea. Black Warrior River. 



U. multiradiatiis Lea. Coosa River, Wetumpka, one specimen 

 Wilsonville, one specimen. 



