Varieties of Land and Fluviatile Shells of Jamaica. 17 



The top of the labrum comes out horizontally from the 

 penult whorl, its right side contracts inwards about the 

 middle, as in Bulimus, vel Spiraxis mirabilis (Cont. 

 Conch, p. 29.) and becomes thickened. Thence it rounds 

 up to the body whorl, joining it rather obliquely, and be- 

 coming appressed to it. Just below the junction of the 

 right and left labrum, there is a stout tooth on the body 

 whorl. Labrum thickened and reflected. 



Length, about .07, greatest breadth, about .03. 



Habitat, Westmoreland, near Savanna-la-Mar. 



Earned in honor of my friend Sir WILLIAM JARDINE, Bart. 



PUPA GREVILLEI. This Shell, in size and color, is like, 

 to the casual observer, that which the late Professor ADAMS 

 set down as " P. fallax ?" of Jamaica, (see Cont. Conch, 

 p. 48)" equal to P. fallax. Say," 



Shell ovate, conic, gradually tapering up to the 4th whorl ; 

 5th, 6th and 7th coming to an obtuse apex. Kich light 

 brown. Two or three upper whorls with distinct transverse 

 striae ; the rest smooth and shining. Whorls 6i or 7, convex, 

 with well impressed suture. Aperture oblique, circular on 

 the right and straight on the left, and sub-angular below. 

 Lip pink, well reflected, thin at edge and out of the plane of 

 the column. A small white tooth within the upper part 

 of the aperture, on the right side of the last whorl, near the 

 labrum, which latter is rather more thickened thereabout in- 

 ward than elsewhere. In the younger incompleted shells, 

 instead of a tooth, is a lamella, as in all the Epistylium 

 group of Helices, and another lamella is seen on the columella, 

 which is not visible in the perfect shell. Umbilicus covered 

 by the labrum. 



Length .14, breadth .07 



Habitat, Newton, St. Andrew's mountains, 



Named in honor of my friend Dr. K. K. GREVILLE, the 

 eminent Botanist, and enthusiastic Conchologist, of Edin- 

 burgh. 



HELIX Me NABIANA. Shell, acute conic, white with pale 

 horn-colored epidermis, semitranslucent. Transverse lines 



