ivhich ijihabit Jamaica. 163 



with a rapidly widening pure white stripe, which unites be- 

 hind the lip with a broad transverse white stripe that runs 

 through a large triangular black spot ; lip white : without 

 striae. Some pale specimens have a tinge of red along the 

 middle. Inhabits Kilmarnock, in the east part of Westmore- 

 land. In another part of "Westmoreland is a subvariety, in 

 which the form is less robust, the anterior white stripe is larger 

 and tinged with yellow, and the transverse white stripe, being 

 interrupted by the black spot, appears more like a short spiral 

 stripe : the lip is rather less reflected, and the aperture small- 

 er and more oblique. 



Var. TRICOLOR. Shell rather robust : very dark brown at 

 both extremities, with a narrow slowly widening snow white 

 line next below the suture ; lip rose red, a little whitish where 

 it joins the penult whorl : with excessively minute striae be- 

 hind the lip. This appears to be Dr. Pfeiffer's var. a. A sub- 

 variety is more slender, paler at the end, and darker in the 

 middle, with the aperture less wide. Inhabits Manchester. 

 Paler specimens occur near Peace R., with the middle whorls 

 of a dingy pearl color. 



b. Light colored fasciate varieties, not distinctly striated 

 above the middle whorls. In this group pale yellow fades 

 into a dingy or pearl white, or is replaced by pearl white in 

 fresh shells. 



Yar. CRASSA. Shell rather small, but robust and thick : 

 dark livid brown at both extremities or bluish grey anteriorly ; 

 with a thick white lip ; with a narrow white stripe next be- 

 low the suture of the last whorl, and a slender white line on 

 the anterior keel ; otherwise pearl white : with very strono^ 

 striae on the back of the last whorl, which diminish in ascend- 

 ing the spire, becoming microscopic on the middle whorls. 

 Inhabits Portland. 



Var. uNicLvcTA. Shell of medium size and form : dingy 

 pale yellow, whiter and sometimes reddish on the last whorl, 



