DESMOULEA. 



115 



Species of Fhos. 



articulatus, Hinds. 

 cancellatus, A. Adams. 

 CJumingii, Reeve. 

 fasciatus, A. Adams. 

 filosus, A. Adams. 

 gaudens, Hinds. 

 Ia3vigatus, A. Adams, 

 ligatus, A. Adams. 

 uodicostatus, A. Adams. 

 plicatus, A. Adams. 



reticosus, Hinds. 

 roseatus, Hinds. 

 lufocinctus, A. Adams. 

 scalarioides, A. Adams. 

 senticosus, Linn. 

 turritus, A. Adams. 

 varicosus, A. Adams. 

 Veraguensis, Hinds. 

 virgatus, Hinds. 



Sub-gen. strongylocera, Miirch. 



Shell with the whorls angulated, the upper part concave ; aper- 

 ture contracted. 



cancellatus, Quoi/ andGaimard. 

 crassus, Hinds. 

 cyanostoma, A. Adams. 

 cyllenoides, A. Adams. 

 sculptilis, A. Adams. 



spinicostatus, A. Adams. 

 textilinus, March. 

 textilis, ^1. Adams. 



textum, Gmel. 



Genus DESMOULEA, Gray. 



Shell ovate-globose, covered with a downy epidermis ; 

 spire short, conical, apex papillary, whorls depressed ; 

 aperture ovate; inner lip thickened, with a ridge poste- 

 riorly; outer lip contracted, thickened externally, plicated 

 internally. 



Ex. T). pinguis, A. Adams, pi. 12, fig. 6. Operculum, 

 D. pinguis, fig. 6, a. 



Desmoulea is remarkable for its obtuse apex and solid 

 growth. There are eight species described, but the animal 

 is not yet known ; when in fine condition they are covered 



