156 



the aperture with deep tooth-like indentations round the umbilical 

 keel ; inside the umbilical keel fine strise of growth, Spire, not 

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

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

 much espanded below. Peritreme, much sinuate abore, and sinuated 

 throughout. Umbilicus, moderately open, greatest breadth 0'31, 

 funnel-shaped. umbilical keel, well developed, not very ^dde, 

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

 as in C. Rupis-Fontis, 7 ■vvhorls of the šame character much closer 

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

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

 breadth O'Sl. 



§ VI. 



C. JUGOSTJS, Ad. See Cat. Phan. p. 14. Eab. 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 lašt whorl, gives place 

 to close, parallel, diagonal grooviugs. Height O '39, greatest breadth 

 0*6, least breadth O'o. 



C. JUGOSUS, var. rujilabris, Chitty. 



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

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

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

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

 end of the lašt vvhorl on the operculum is appressed to the preceding 

 vrhorl. Height 0'6I, greatest breadth Ovl, least breadth 0"57. 



C. PALLESCENs, Ad. Hūb. North-east comer 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-browu ; apex red. Sculpture, fine lines of 

 growth, with shght coarse corrugation over the middle of lašt whorl, 

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

 with slightly convex outlines. TThorls, 5^, well rounded, but less 

 above ; raoderate suture. Aperture, well rounded, shghtly obliąue 

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

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

 Uinbilical keel, moderately produced. Operculum, planular below, 

 but from the increasitig height of the vvhorls of the spirai lamina, 

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



