70 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 58. 



tube but slightly bent, opening on the outside. Operculum typically 

 Torrellid. 



Type of the subgenus. — Torrella (TorreUisca) simjisoni, new species. 



The type species is the only one known of tliis group at present. 

 It comes from central Cuba. 



Adamsiellinae, new subfamily. 



Shell ranging in form from ovate-conic to elongate-conic, marked 

 by axial and spiral sculpture of equal strength, giving the surface a 

 granulose appearance, or by axial ribs stronger than the spiral 

 threads, the latter giving the ribs an articulate appearance. In two 

 groups the ribs are gathered into tufts at the summit. No special 

 breathing device has been observed in any of the species. The 

 operculum consists of a chondroid basal plate composed of several 

 whorls, in which the upturned outer edge of the preceding whorl is 

 strengthened and built into a strongly elevated lamella by the inner 

 edge of the succeeding turn. There is no ribbing or buttressing to 

 this lamella. 



Tyjye genus. — AdawsielJa Pfeiffer. 



Genus ADAMSIELLA Pfeiffer. 



1851. Adarmiella Pfeiffer, Zeitschr. Malak., p. 155. 

 The definition for the subfamily may cover the genus. 

 Type of the genus. — Turbo wirahUis Wood. 



Subgenus ADAMSIELLA Pfeiffer. 

 1851. Adamsiella Pfeiffer, Zeitschr. Malak., p. 155. 



Shell ranging from ovate-conic to elongate-conic in form. Axial 

 and spiral sculpture about equal, producing a granular surface. 

 Operculum typically Adamsielloid. 



Type of the subgenus. — Turbo mirahilis Wood. 

 The following species are now referred to this subgenus. They 

 fall into three groups as follows : 

 The group of Adamsiella mirahilis : 



Turbo mirahilis\Yood Jamaica. 



Cyclostoma irrorrata Gloyne Jamaica. 



Cyclostoma variabilis C. B. Adams Jamaica. 



Cyclostoma gray ana Pfeiffer Jamaica. 



Adamsiella gray ana aureolabre Simpson Jamaica 



The group of Adamsiella pulchrior : 



Cyclostoma pulchrior C. B. Adams Jamaica. 



The group of Adamsiella monstrosa : 



Cyclostoma moribunda C. B. Adams Jamaica. 



Cyclostoma intermedia C. B. Adams Jamaica. 



