27 



Sub- genus HEUSOMA, Swainson. 



H. bicarinata, Say. Ponds and streams. Beech creek ; 



Cahawba river. 

 H. trivolvis, Say. Ponds and streams. 



Sub-genus GYBAULUS, Agassiz. 



G. dilatatus, Gould. (Has been found in N. W. Georgia.) 

 G. parvus, Say. Stagnant water and small streams. 



Genus SEGMENTINA, Fleming. 

 Sub- genus PLANORBULA, Haldeman. 



* 



P. Wheatleyi, Lea. Swamp near Selma. (Aldrich.) 

 Sub-family ANCYLINJ3. 

 Genus ANCYLUS, Geqffroy. 



A. diaphanus, Hold. Tennessee river. 

 A. ? Coosa and Cahawba rivers. 



Genus ACROLOXUS, Beck. 



A. filosus, Conrad. Black Warrior river, south of Blount 

 Springs; Coosa river? 



PULMONATA GEOPHILA. 

 Family OLEACINID^E. 



Genus GLANDINA, Schum. 

 1 G. truncata, Gmelin. Vicinity of the Gulf Coast. 



Family HELICIDJE. 

 Sub-family YITEININ^. 

 Genus MACROCYCLIS, Beck. 

 M. concava, Say. Wooded districts. 



Genus ZONITES, Montfort. 

 Sub-genus OMPHALINA, Raf. [Includes Hyalina, Gray.~\ 



O. capnodes, W. G. Binney* Montevallo. 

 O. friabilis, W. G. Binney* 



