THE NAUTILUS. 41 



Angitrema salebrosa Conrad. Tennessee river, Florence, common. 



Angitrema subglobosa Lea. Tennessee river, Florence, Ala. 



Angitrema tuomeyi Lea. Tennessee river, Florence, Ala. A few 

 were found in 1894 but none this time. 



Angitrema dnttoniana Lea ?. Tennessee river, Florence, Ala. 



Angitrema lima Conrad. Cypress Creek, Florence, Ala. A few 

 faintly banded. 



Angitrema verrucosa Raf. Tennessee river, Florence, Ala. 



Lithasia Jiorentina Lea. Cypress and Shoal creeks, Florence, 

 Ala. Found only a few. 



Lithasia nuceola Anthony. Tennessee river, Florence, Ala. 

 Doubtful determination. 



Lithasia curta Lea. Tennessee river and Shoal creek, Florence, 

 Ala. 



Strephobasis plena Anthony. Tennessee river, Florence, Ala. 



Strephobasis curta Hald. Tennessee river and Shoal creek, Flo- 

 rence, Ala. 



Pleurocera alveare. Tennessee river, Cypress and Shoal creeks, 

 Florence, Ala. 

 , Pleurocera undulatum Say. Tennessee river, Florence, Ala. 



Pleurocera excuratum Conrad. Tennessee river, Florence, Ala. 



Pleurocera moniliferum Lea. Tennessee river, Florence, Ala. 



Pleurocera ponderosum Anthony. Tennessee river, Florence, Ala. 



Pleurocera moriforme Lea. Tennesee river, Florence, Ala. 



Pleurocera thorntonii Lea. Tennessee river, Florence, Ala. 



Pleurocera anmdiferum Conrad. Black Warrior, Tuscaloosa, Ala. 



Pleurocera elevatum Lea. Yallabusha river, Granada, Miss. 

 Only two specimens found, they were covered with a thick deposit 

 which being removed revealed a polished, olive colored epidermus 

 and two strong bands. 



Pleurocera trivittatum Lea. Tombigbee river, Columbus, Miss. 



Pleurocera incurvum Lea. Cypress creek, Florence, Ala. 



Pleurocera alabamensis Lea. Cypress creek, Florence, Ala. 



Pleurocera olivaceum Lea. Tombigbee river, Columbus, Miss. 



Pleurocera lativittatum Lea. Shoal creek, Florence, Ala.' 



Goniobasis acuta Lea. Florence, Ala. 



Goniobasis formosa Conrad. Florence, Ala. 



Goniobasis hydeii Conrad. Black Warrior, Tuscaloosa, Ala. 



Goniobasis interveniens Lea. Florence, Ala. 



