which inhabit Jamaica. 165 



1, 1845, p. 14. It is of a pearl or ashy white color. It is 

 Dr. Pfeiffer's variety /3. 



Var. ALBiDA. Shell like var. citrina, but with the wliite 

 stripe reduced to an ill-defined line, slightly tinged with yel- 

 low on the penult whorl, with the red tinge very faint. 



Var. VALiDA. Shell robust and very thick : pearl white, 

 with a tinge of yellow on the middle or on all the whorls of 

 the spire ; last whorl whiter, w^ith a pure white stripe on it 

 next below the suture ; lip pure white and very thick : strongly 

 striated on the back of the last whorl, finely striated up to the 

 middle of the shell. Inhabits near Peace R., Manchester. 



Var. UNicoLOR. Shell of medium size and form : pale yel- 

 low or pearl white, with a white lip : strongly striated on the 

 back of the last whorl, finely striated on the middle whorls. 

 Inhabits Porus in the east part of Manchester. 



d. Strongly striated varieties, light colored, not fasciate. 

 Var. STRiATULA. Shell thick, short, robust : pale greenish 

 yellow, sometimes with a tinge of pale brown or horn color ; 

 lip white, thick, and well expanded : with fine regular approx- 

 imate striae, which are obsolete only at the summit. 



Var. STRIATA. Shell short, robust : pearl white or pale 

 horn color ; with a white, much expanded, but rather thin lip : 

 aperture not oblique : with fine regular, rather distinct strise, 

 which are obsolete only at the summit. Inhabits Waterloo in 

 the back part of Manchester. 



Var. coRPULENTA. Shell large and robust, but moderately 

 thickened : pearl white, sometimes with a tinge of red on the 

 upper whorls and anteriorly ; lip white; with a large irregular 

 black spot behind the lip : coarsely striated near the end of the 

 last whorl ; otherwise with the stria) of the lower half of the 

 shell most lightly impressed. Inhabits St. Elizabeth. 



Var. FuscA. Shell short, robust, but moderately thick- 

 ened : pale umber color, darker near the end of the last whorl; 

 lip white : lightly striated on the upper whorls ; in the rest 



