HELIX. 85 



Var. M YCROMPHALA, Bottger. PL 20, fig. 23, 24. 



Umbilicus wider, surface obsoletely, very minutely granular and 

 spirally undulately lineolate, light chestnut color with a white band, 

 here and there strigated with chestnut. Diam. 15 5-19 mill. 



Var. CYCLOTHYRA, Bottger. PI. 20, figs. 33, 34. 



Larger, usually more depressed, umbilicus much wider, margins 

 of aperture approaching more closely. Diam. 19-22 mill. 



Var. APPELINSI, Mousson. PI. 20, fig. 25. 



More widely umbilicated, irregularly but strongly crispate-striate, 

 intermingled with elongated granulations, dull, light corneous, with 

 a pale dorsal band ; whorls 6, flattened, the last descending slightly 

 in front, periphery sometimes subangulated ; peristome a little ex- 

 panded, slightly but widely labiate within, margins converging, 



Diam. 15-19 mill. 



H. RAVERGIENSIS, Fer. PI. 20, figs. 13, 14. 



Narrowly umbilicated, rather thin, slightly pellucid, obliquely 

 striate, yellowish gray, with white bands at the suture and periphery ; 

 whorls 6, obliquely planulate, suture superficial ; peristome patulous, 

 with a white lip within. Diam. 7 mill. 



Caucasus, Georgia. 



It is H. Caucasica, Pfr., and H. limbata, Kryn. 

 Var. PERSICA, Bottger. PI. 20, figs. 15, 16. 



More couically depressed, thicker, with thread-like strife, here and 

 there rib-like, violet corneous, radiately strigate with white, bauds 

 narrower and fainter. Diam. 17'5 mill. 



Astrabad, Northern Persia. 



Var. TRANSCAUCASICA, Bayer. PI. 20, figs. 31, 32. 



Differs from the type in the smaller more depressed, less striate 

 shell; umbilicus narrower; corneous. Diam. 15, alt. 12 mill. 



Southern Caucasus. 

 H. PRATENSIS, Pfr. PI. 20, figs. 26-30. 



Moderately umbilicated, rugosely striate, whitish, with two chest- 

 nut bands, or without bands, and the last whorl becoming brownish 

 flesh color ; whorls 6, the last scarcely descending in front ; peristome 

 expanded, remotely white lipped within, margins approaching. 



Diam. 17 mill. 



Riv. Tortoom, Asiatic Russia. 

 H. Bayer ii, Parr, is a synonym. 



