Varieties of Land and Fluciat'de Shells of Jamaica. 3 



as abruptly reflected. Peritreme seems to be formed 

 before the Peristome projects. Operculum ? umbilicus 

 small, extending through the truncate apex. Mean 

 divergence 50 ; length .76, greatest breadth .56, least 

 breadth from last to penult whorl .39. 



Habitat, Durham, Trelawny. 



These shells differ much in sizeone before me measur- 

 ing only .52 in. length and otherwise in proportion. It in 

 some respects comes near to G. mirandum, but it is more 

 globose ; and transverse strisB are far more coarse and 

 distant ; it has no visible spiral striae, and the hiatus in the 

 peritreme is much more marked and decided. 



Named in honor of Mrs. POOLE, daughter of the late 

 WILLIAM PEARMAN, ESQ., to whom I am greatly indebted 

 for conchological assistance. 



CYCLOSTOMA BARKLYANUM. Shell robust, elongate, conic ; 

 slightly shining, white or very pale rich brown, with irre- 

 gular transverse bands of light rich brown, zigzag on the 

 right or towards the apex, and straight and shading off on 

 the left or towards the aperture ; some of the bands being 

 lighter, and, as it were, shadows of the darker ones ; with 

 the same light rich brown within the lower end of the 

 aperture ; with very strong prominent rounded transverse 

 stria3, very faintly decussated by spiral striae. Spire with 

 outlines slightly convex. Apex truncate, with the loss of 

 about 3 whorls ; 4j whorls remaining ; with a very mode- 

 rately impressed suture, which is crenulate, by the enlarge- 

 ment of the upper ends of some of the transverse striae. 

 "Whorls slightly convex. Aperture ovate, orbicular, oblique, 

 narrower and longer than C. Augusts. Peristome produced 

 and reflected on to the peritreme. Peritreme well 

 expanded ; white tinged with light rich brown, canalicu- 

 lated above, attached to penult whorl, then widely spread- 

 ing over the umbilicus, which is small. Mean divergence 

 37 ; length .92, greatest breadth .57, least breadth .44. 



Habitat, New Hope, Westmoreland. 



Named in honor of Sir HENKY BARELY, Governor of 

 Jamaica, on the day of his arrival. 



