156 



tlie aperture with deep tooth-like indentations round the umbilical 

 keel ; inside the umbilical keel fine striae of growth. Spire, not 

 much elevated, with almost straight outlines. Whorls 5, well 

 rounded, deep suture. Aperture, slightly oblique to the right below, 

 much expanded below. Peritreme, much sinuate above, and sinuated 

 throughout. Umbilicus, moderately open, greatest breadth - 31, 

 funnel-shaped. Umbilical keel, well developed, not very wide, 

 deeply produced inside. Operculum, deep concave, lamina elevated, 

 as in C. Rupis-Fontis, 7 whorls of the same character much closer 

 together, and close to outer edge of plane ; termination of last whorl 

 inflected and thickened. Height 0*81, greatest breadth l'l, least 

 breadth 0*81. 



§ VI. 



C. jugosus, Ad. See Cat. Phan. p. 14. Hab. St. Elizabeth. 



C. jugosus, var. parva, Chitty. 



A small variety of this shell occurs. Height 0*52, greatest breadth 

 0-8, least breadth 0-61. 



C. jugosus, var. striosus, Chitty. 



A still smaller variety occurs, the mouth of which is less dilated, 

 and the sculpture is altogether less corrugated, and which, from 

 above the periphery on the lower part of the last whorl, gives plaee 

 to close, parallel, diagonal groovings. Height - 39, greatest breadth 

 0*6, least breadth 0*5. 



C. jugosus, var. rufilabris, Chitty. 



This I doubtfully place as a variety only ; if thought otherwise, it 

 may take specific rank as C. rufilabris. It is much more conical 

 than C. jugosus, brownish on the lip, coarsely corrugate in the site 

 of the obsolete umbilical keel ; the umbilicus is very narrow ; the 

 end of the last whorl on the operculum is appressed to the preceding 

 whorl. Height 0*61, greatest breadth 0*71, least breadth 0*57. 



C. pallescens, Ad. Hab. North-east corner of St. Elizabeth, 

 Chitty. See Cat. Phan. p. 14. — Lamella 10 whorls on opercu- 

 lum, and much less raised than in C. jugosus. 



C. Westmorelandensis, Chitty. Westmoreland. 



Form, subglose-conic. Colour, red-brown, with light brown epi- 

 dermis ; aperture red-brown ; apex red. Sculpture, fine lines of 

 growth, with slight coarse corrugation over the middle of last whorl, 

 coarse lines of growth inside umbilical keel. Spire, well elevated, 

 with slightly convex outlines. Whorls, 5\, well rounded, but less 

 above ; moderate suture. Aperture, well rounded, slightly oblique 

 to the left below, a little dilated on the right below. Peritreme, 

 much sinuate above. Umbilicus, moderate size, greatest breadth 0'3. 

 Umbilical keel, moderately produced. Operculum, planular below, 

 but from the increasing height of the whorls of the spiral lamina, 

 apparently concave above ; 9 or 10 whorls, closer than in C. jugosus, 



