178 



spiral carinse, of which 8 or 9 are visible on the upper whorls. 

 Spire, much depressed, less than in F. Bowerbankiana, with concave 

 outlines. Apex, mammillated. Whorls, 4frds, with a moderate 

 suture ; last whorl typical, subangulated and subplauulated as in F. 

 Bowerbankiana and F. Fadyeniana. Aperture, semicircular, only 

 slightly affected by the subangularity above and below the periphery, 

 very slightly dilated. Labrum, double ; outer edge pectinated by 

 the spiral carinse, inner edge simple, white and shining. Labium, 

 white, thickened and reflected towards the umbilicus about its centre, 

 below much curved to the right, much lower than the plane of the 

 labrum at its lower end ; widely separated from the body- whorl. 

 Umbilicus, very deep and narrow. Labral lamella very broadly and 

 sharply produced throughout ; besides the labral lamella within the 

 umbilicus, extending from the back of the labium to the umbilicus 

 and body-whorl, are four or five well-produced distinct sharp lamellae. 

 Operculum, deep concave in the centre, and a broad margin all round, 

 which, on that side, folds well over the labrum, especially below • 

 much covered by numerous coarse granulations, and in the hollow 

 on the labral side with four or more strong raised lamellae, which are 

 also covered with coarse granulations. 



Height 0-076, greatest breadth 0*105, least breadth 0'087. 



Named in compliment to Dr. J. E. Gray, British Museum. 



Genus IV. Stoastoma, Adams. 



Shell subglobose. 



Stoastoma pisum, Ad. See Mon. Stoast. Adams, 1849, p. 11 ; 

 Cat. Phan. p. 228. 



Sculpture, almost obsolete, very numerous raised spiral microscopic 

 carinse, which are well defined on the upper whorls, four or five 

 being visible. Labrum, double. Labium, well detached from the 

 penult whorl. Operculum, concave and finely granulated in its con- 

 cavity. 



Hab. Manchester, generally, and near Accompong Town, St. Eli- 

 zabeth. — Chitty. 



Stoastoma Pfeifferianum, Ad. See Mon. Stoast. Adams, p. 8 ; 

 Cat. Phan. p. 230. 



Labrum, double. Operculum, concave, finely granulated in its 

 concavity ; margin sharp on the labral side, rather broad, but not 

 thickened on the labial side. 



Hab. Manchester back woods. — Chitty. 



Stoastoma Livesayanum, Chitty. 



Hab. Near Ashley Hall, Trelawny. 



Form, subglobose. Colour, pale yellow. Sculpture, 11 distant, 

 blunt and raised spiral carinse, of which 5 are visible on the upper 

 whorls. Spire, conic, moderately elevated, with slightly convex out- 



