HELIX. 7 







interrupted basal lamella, colnmella slanting, callously thick- 

 ened. Diam. 22 mill. 



Jamaica. 



This is H. Foremaniana, Pfr. (not Adams) ; H. Cookiana, 

 Gmel. ; H. conica, Swains., and H. epistylium, Dillw. 



H. ALVEARE, Pfr. PI. 1, fig. 9. 



Imperforate, solid, obliquely striate, white under the hirsute 

 fulvous epidermis ; whorls 10, narrow, the last obsoletely 

 angulate near the base ; aperture with a deep-seated basal 

 lamella, the columella with a subspiral lamella, scarcely visible 



without. Diam. 1 inch. 



Jamaica* 

 H. FORE MA NT AN A, C. B. Adams. PI. 1, fig. 10. 



Imperforate, somewhat solid, smoothly striate, alabastrine; 

 whorls 7, a little convex, the last globose, base not impressed; 

 a strong nodiform tooth on the columella, and an acute elevated 

 lamella (with rarely a second smaller one) on the base of the 



aperture. Diam. 18'5 mill. 



Jamaica. 



H. TRIPTYCHA, Sllllttl. PI. 1, fig. 11. 



Imperforate, globulose, thin, scarcely striulate, shining, 

 diaphanous, alabastrine; whorls 6, slowly increasing, suture 

 submargined, last whorl inflated, periphery subangulated, base 

 scarcely impressed, columella twisted, truncate at base, callously 

 dentate, basal margin with an acute entering lamella, and a 



smaller one near the columella. Diam. 14 mill. 



Jamaica. 

 H. SPICULOSA, Shuttlew. PL 1, fig. 12. 



Imperforate, campanulately semiglobose, solid, lighly striate, 

 whitish under a deciduous yellowish epidermis ; whorls 8, a 

 little convex, apex subacute, last whorl obsoletely angulated, 

 base excavated in the middle, columella callously dentate, 

 aperture with a revolving basal lamella, scarcely reaching the 



margin. Diam. 14 mill. 



Jamaica. 



H. TORREFACTA, C. B. Ad. PI. 1, fig. 13. 



Imperforate, somewhat solid ; whorls 9, a little convex, the 

 earlier ones elegantly striate, the later ones smoothish, the last 

 with subangulate periphery, and scarcely impressed base ; 



