of Land Shells from New Granada^ 483 



millims., least breadth 25, height 19; aperture 18 millims. 

 wide at its greatest diameter. 



Hah. San Sebastian, New Granada {F. A. Simons). 



This species is remarkable for the swollen character of the 

 last volution. Besides the dark olive-brown general colour 

 of the shell, on close inspection numerous narrow dark spiral 

 lines may be observed encircling the last whorl. This is 

 white beneath the epidermis, as may be seen on the front part, 

 where a small spot is generally denuded from having been 

 trailed along the ground by the animal. The types of this 

 and the following species are in the British Museum. 



Helicina colomhice. 



Shell trochoid, acutely keeled at the middle of the last 

 whorl, yellow, banded with clouded purplish pink round the 

 lower part of the upper whorls and above and below the cari- 

 nation ; the band or zone below the keel narrower than the 

 upper one. Whorls 5^-6, but very little convex, rather 

 coarsely spirally striated, obliquely marked with very faint 

 wavy lines of growth, and most minutely striated or scratched 

 obliquely in an opposite direction ; last whorl beneath the 

 carina a trifle convex. Aperture subtriangular, displaying the 

 colours of the exterior. Lip lemon-yellow, shortly expanded 

 and reflexed, especially at the basal margin and towards the 

 columellar region, where it is reflected so as to almost touch 

 the whorl ; columella short, arcuate, whitish ; columellar 

 callus broadly spread, whitish, extending to the upper termi- 

 nation of the peristome. Height 8^ millims., greatest breadth 

 13^, least diameter 11^ ; aperture 5 millims. long, 6 wide 

 from the carina to the columella. 



Hob. San Sebastian, New Granada [F. A. Simons). 



The central keel is whitish and falls just above the upper 

 extremity of the outer lip, and consequently, as the last whorl 

 does not descend, runs just above and parallel with the suture 

 and is distinctly visible some distance up the spire. The form 

 of this pretty species, of which only a single specimen was 

 collected, is somewhat peculiar, the spire being rather 

 elevated in proportion to the portion of the shell below the 

 keel. Besides the very faint and most minute wavy lines of 

 growth above referred to, which are only visible under a 

 powerful lens, there are others quite observable by the naked 

 eye. Although I have described the last whorl as orna- 

 mented with two purplish-pink bands, it might equally well 

 be said to have but a single broadish zone subdivided by the 

 acute central carina, which is whitish. 



32* 



