VARICELLA. 71 



columellar axis. The eolumella is more concave than in 

 V. gracilior. It is probably allied to V. osculans, but is 

 somewhat larger with fewer whorls. 



Fig. 7 represents the type. Another shell (pi. 12, fig. 6), 

 exact locality unknown, has the ribs quite high, especially 

 just below the suture, nine standing on th'e last whorl, 

 intervals with 35 slightly .crimped' striae. The eolumella is 

 quite strongly concave and the false-umbilicus comparatively 

 large. 



17. V. LIODERMA Pilsbry, n. sp. PI. 14, fig. 37. 



The shell is eonic-turrite, thin, pale subtransparent brown, 

 with a few 'curved reddish longitudinal streaks, about two 

 on each whorl. 3% whorls form the densely rib-striate em- 

 bryonic shell. 41/0 post-embryonic whorls are very convex 

 below the suture, very glossy, sculptured with widely spaced 

 white ribs, which are high and strong on the rounded shoul- 

 der, but weaken rapidly downwards, barely reaching the 

 suture below, and 'obsolete on the base of the last whorl. 

 There are 9 ribs on the last whorl. The polished intervals 

 are faintly striatulate, but without distinct striae. There 

 are one or two very weakly raised varices on each of the 

 later whorls. The aperture is narrowly ovate, narrow above 

 and below ; eolumella vertical, curving into the parietal mar- 

 gin, strongly truncated obliquely at the base. Length 9, 

 diam. 2.8, length of aperture 3 mm. 



Jamaica. Type 2941 A. N. S. P.; Montpelier (J. B. Hen- 

 derson) . 



This species is readily recognized by the entire absence of 

 thread-like striae in the intercostal spaces, which are polished 

 and show only faint wrinkles under a compound microscope. 

 None of the specimens examined is mature. Probably a full 

 grown shell would measure 2 or 3 mm. more in length. 



Species of Trinidad and Panama. 



The following species seem .to belong to the V. gracillima 

 group. V. coronata was based on a single shell, which later 

 was supposed by Gkippy to be introduced. Bulimus fimbria- 

 tus Forbes was collected during the voyage of the Herald and 

 Pandora. The shells brought back were, it is notorious, often 



