AC1IATLXELLA. 



1:57 



Sub-gen. amastra, IT. and A. Adams. 



Shell usually dextral, not striped or banded ; apex of spire 

 often ruucrouate, whorls longitudinally striated or rugose; aper- 

 ture small ; columella with a strong, spiral, lamelliform, anterior 

 plait ; outer lip incrassated. 



Baldwini, Newc 

 biplicata, Newc. 

 ellipsoidea, Gould. 

 gigantea, Newc. 

 magna, C. B. Adams. 

 melampoides, Pfeiff. 

 moesta, Newc. 



nueleola, Gould. 

 obesa, Newc. 

 obscura, Newc. 

 reticulata, Newc. 

 tristis, Firm. 

 ventulus, Ferns. 

 violacea, Neicc. 



Sub-gen. partulina, Pfeiffer. 



Shell ovately conical, usually heterospiral ; whorls simple ; 

 columella tortuous, not truncate anteriorly ; outer lip thickened 

 internally ; peritreme reflexed. 



Gouldi, Neicc. splendida, Newc. 



grisea, Neicc. tessellata, Neicc. 



perdix, Fteeve. virgulata, Miyh. 



Sub-gen. bulimella, Pfeiffer. 



Shell ovately conical, often reversed; whorls smooth ; colu- 

 mella short, tortuous, not abruptly truncate anteriorly ; outer lip 

 internally marginate ; peritreme simple, not reflexed. 



attenuata, Pfeiff". 

 bulimoides, Swains. 

 Candida, Pfeiff. 

 cestus, Neicc. 

 cinerosa, Ffeiff. 

 crassa. Neicc. 

 dolium, Ffeiff. 



Forbesiana, Pfeiff. 

 Fricki, Pfeiff. 

 glabra, Neicc. 

 macrostoma, Pfeiff. 

 monacha, Ffeiff. 

 multicolor, Pfeiff. 

 multilineata, Newc. 



