8 HELIX. 



H. PARABLETA, Bottger. PI. 1, figs. 31-33. 



Narrowly umbilicated, somewhat solid, smooth, white, with a 

 superior chestnut band, and an interrupted one within it, base with 

 a broad band, and several narrow ones within it ; whorls 5, very 

 slowly increasing, with deep suture, closely irregularly striated, last 

 whorl with more or less distinctly angulated periphery, base con- 

 vex ; peristome simple, labiate within, margins approaching. 



Diam. 6 mill. 



Nachitscheivan, alluvion of the Araxes. 



H. BOLLENENSIS, Locard. PI. 1, figs. 36-38. 



Narrowly umbilicated, solid, thick, smooth, opaque, strongly, 

 irregularly, somewhat undulately striate, greyish white, usually uni- 

 colored, sometimes with interrupted pale brow r n bands, often scarcely 

 visible ; whorls 6, very convex, the last well rounded, a little dilated 

 towards the aperture ; peristome simple, white-lipped within. 



Diam. 13-15 mill. 



Southern France. 



Locard has indicated varieties depressa, minor and fasciolata. 



H. LAURACINA, Fagot. PI. 2, figs. 55-57. 



Rather narrowly umbilicated, solid, chalky, thick, subopaque, 

 with strong undulating stride, close, irregular, sometimes not con- 

 tinuous, stronger above, yellowish or yellowish white, usually with- 

 out bands, sometimes with faint, subcontinuous chestnut bands, 

 varying in number ; whorls 4 2 -5, slightly convex, slowly increas- 

 ing, suture deep, last whorl a little flattened above at the aperture ; 

 peristome acute, with a yellowish or chestnut interior callus. 



Diam. 11-14 mill. 



Southern France. 



H. PERROUDIANA, Locard. PI. 2, figs. 58-60. 



Moderately umbilicated, solid, thick, chalky, subopaque, with 

 rather close, undulated striae, weaker below, yellowish white or 

 greyish, usually without bands, sometimes with faint chestnut 

 bands on the middle and below, varying in number, nearly obsolete 

 towards the umbilicus ; whorls 4^-5, convex, with deep suture, last 

 whorl a little inflated at the aperture, somewhat depressed above 

 and below ; peristome acute, with a thick interior callus. 



Diam. 10-12 mill. 



Southern France. 



