12 Descriptions of TJiirty Supposed New Species and 



stripe anteriorly," mentioned in the former description, 

 shades off, before it reaches the left side of the labrum, 

 into a band of horn color, which continues running along 

 the lowest part of the whorls well defined, almost up to 

 the 5th, where it disappears. In some specimens, this horn 

 colored stripe is less developed, but the tessalation is more 

 so. The " tinge of rose red" is also to be seen within the 

 aperture, and so is the " broad dark brown stripe. " 



CYLINDRELLA HYDROPHANA, Named from the apparently 

 hydrophanous nature of its epidermis. Shell, sub-cylindri- 

 cal, tapering slightly at both ends, shining, dark dingy 

 bistre brown, covered by what appears to be a dusty white 

 powdery epidermis, which here and there appears to have 

 cracked off, leaving dark, narrow streaks parallel with 

 the striae of growth, as though the shell were tessalated ; 

 with very fine striae of growth, finer than in C. montana, 

 which this shell somewhat resembles ; striae scarcely 

 arcuate, very oblique. Keel scarcely developed on the 

 well-rounded last whorl. Spire with convex outlines. Apex 



broadly truncate with the loss of ? ten whorls 



remaining ; scarcely convex, with a lightly impressed but 

 not marginate suture. Aperture w^ell rounded. Lip 

 shining, whitish, moderately reflected. Length .6, greatest 

 breadth . 14, least breadth at the truncate apex . 1. 



Habitat, Durham ? Trelawny. 



CYLINDRELLA STRIATA. Like (7, montana^ dec. Shell 

 short and thick, subovate ; pure white, truncate apex deep 

 grey. Coarsely set shining striae, coarser than C. Jiydro- 

 pJiana and C. montana. Striae arcuate. Keel on the last 

 whorl scarcely perceptible. Spire with convex outlines. 



Apex broadly truncate, with the loss of ? whorls. 



Whorls left, 9f ; very convex, not marginate ; with a well- 

 impressed suture. Aperture produced as in all this class. 

 Lip nearly orbicular, reflected and thickened. 



Length .61, breadth .16. 



Habitat, Burnt Hill Glade, Westmoreland. 



