CLIONELLA. 311 



Species of Faunus. 



ater, Linn. princeps, Lea. 



Cecillii, PML 



Sub-gen. melanatria, Bowdich. 



Whorls subnodose ; aperture with the notch at the fore part 

 wide and somewhat obsolete ; outer lip slightly sinuated. 



fluminea, Gmel. 



Genus CLIONELLA, Gray. 



Shell fusiform, whorls longitudinally ribbed, the last an- 

 teriorly contracted ; aperture produced in front into a 

 rather wide channel ; outer lip with a deep sinus at the 

 hind part. 



Syn. ? Melatoraa, Sttains., not Anthony. 



Ex. C. buccinoides, Lamarck, pi. 32, fig. 10. Oper- 

 culum, C. buccinoides, fig. 10, a, 10, h. Shell, C. bucci- 

 noides, fig, 10, c. 



The shells comprised in this genus have very much 

 the aspect of fresh-water Clavatulee ; some of the species 

 are said to be inhabitants of the rivers of Africa. 



Species oj Clionella. 



buccinoides, Lam. stolida, Hinds. 



semicostata, Kien. striata, Kien. 



sigillata. Reeve. 



