rUSIONELLINiE. 



227 



Sub gen. myubella, Hiuds. 



Whorls furnished posteriorly with a tubercukted zone, ante- 

 riorly transversely sculptured, or, very rarely, smooth; colu 

 mella tortuous and produced anteriorly. 



affinis, Gray. 



albicostata, Adams and Reeve. 



armillata, Hinds. 



aspera, Hinds. 



buccinata, Hinds. 



bifrons, Hinds. 



caelata, Adams and Tteeve. 



cancellata, Quoy. 



columellaris, Hinds. 



elata, Hinds. 



fenestrata, Hinds. 



flava, Gray. 



glauca, Hinds. 



intertincta, Hinds. 

 larvseformis, Hinds. 

 picta, Hinds. 

 pulchra. Hinds. 

 radula, Hinds. 

 roseata, Adams and Reeve. 

 serotina. Hinds. 

 torquata, Adams and Reeve. 

 tuberculosa, Hinds. 

 undulata, Gray. 

 variegata. Gray. 

 violascens, Hinds. 



Sub-fam. PUSIONELLIN.^. 



Operculum semi-ovate, nucleus small, in the middle of 

 the straight inner edge. Shell smooth, porcellanous. 



Genus PUSIONELLA, Gray. 



Shell fusiform or oblong-ovate, solid, smooth, porcel- 

 lanous; aperture contracted anteriorly; columella keeled, 

 twisted in front; canal slightly recurved, short. 



Syn. Netrum, Phil. 



Ex. P. Nifat, Adanson, pi. 24, fig. 3. Operculum, P. 

 buccinata, Lamarck, fig. 3, «, 3, h. 



The shells in this genus are mostly polished and present a 

 porcellanous appearance ; the operculum is very peculiar. 



