86 HELIX. 



Var. DELABRIS, Mousson. PL 21, figs. 46, 47. 



Perforate, rather thin, chalky, irregularly striulate and slightly 

 and very minutely granular, white, doubly banded with brown, apex 

 corneous, suture scarcely impressed: whorls 5?, somewhat convex* 

 the last slightly descending in front ; base plano-convex ; aperture 

 white, with translucent band, peristome acute, expanded, not labiate 

 within, margins approximating. Diam. 15 mill. 



Transcaucasia. 



Var. JOANNIS, Mortillet, PI. 20, figs. 41, 42. 



Moderately umbilicated, somewhat solid, distinctly striate, sub- 

 rugose, whitish or fulvous gray, sparsely pellucid-dotted and with 

 two dark chestnut bands ; whorls 6, slightly convex, the last descend- 

 ing in front; peristome scarcely expanded above, white-lipped 

 within, the margins converging and joined by a thin callus. 



Diam. 17-25 mill. 



Erzeroum, Armenia. 



H. Dumonti, Mortillet is a synonym. 



H. PONTICA, Bottger. PL 20, figs. 35-40. 



Narrowly umbilicated, slightly shining, distinctly spirally lineo- 

 late, scarcely granular, white unicolored, or with two chestnut bands 

 or the upper or lower one absent. Diam. 18-21 mill. 



North efSuekum, Caucasus. 



H. EICHWALDI, Pfr. PL 21, figs. 48, 49. 



Rather widely umbilicated, rugosely striate, shining, whitish, with 

 horny dots and doubly 'banded ; whorls 6, scarcely convex, the last 

 deflected in front ; peristome expanded, prominently, remotely white- 

 lipped within, margins acute, almost continuous. Diam. 18 mill. 



Caucasus. 



Var. DAGHESTAXA, Parr. PL 21, figs. 50, 51. 



Widely umbilicated, rugosely striate, shining, corneous, radiately 

 strigate with white, with a median white band, suture linear ; whorls 

 6, a little convex, the last deflected at the aperture ; peristome acute, 

 slightly expanded, white-lipped, margins approximating. 



Diam. 16 mill. 



Daghestan, Caucasus. 



H. ARMENIACA, Pfr. PL 21, figs. 52-54. 



Moderately umbilicated, plicately striate, variegated with corneous 

 and ashy white ; whorls 6, depressed, the last angulated, shortly de- 



