HELIX. 75 



Var. CYPREOPHILA, Newcomb. Fig. 30. 



Shell thinner, scarcely malleated, umbilicus narrowly open. 



Copperopolis and San Diego, Cat. 



Subsection II, ODONTURA, Crosse and Fischer, 1872. 



H. GHIESBREGHTI, Nyst. PL 16, fig. 31. 



Narrowly umbilicated, striate, pilose when fresh, chestnut color, 

 with yellowish bands on the upper part of the shell, the intervening 

 surface sometimes darker chestnut or nearly black ; whorls 5 J, some- 

 what convex, the last large, rounded, slightly descending in front ; 

 lip white, expanded, shortly reflected, margins approaching. 



Diam. 50-65 mill. 



Chiapa, Mexico ; Vera Paz, Guatemala. 



There is some variation in the ground color, and number and dis- 

 position of the bands : in one variety the shell is yellowish with a 

 narrow chestnut band above, and another and wider one below the 

 periphery. 



H. EXIMIA, Pfr. PL 16, fig. 32. 



Scarcely umbilicated, obliquely rugose and very closely granular, 

 corneous olivaceous, with five or six dark brown bands ; whorls 4, 

 somewhat convex, rapidly increasing, the last inflated, descending 

 in front, compressly inflated round the brownish umbilical region ; 

 peristome simple, whitish, narrowly reflected, dilated over the um- 

 bilicus, which it nearly closes. Diam. 37-41 mill. 



Guatemala, Honduras. 



Subsection III, LEPTARIONTA, Crosse and Fischer, 1872. 

 H. FLAVESCENS, Wiegni. PL 19, figs. 76, 77. 



Perforate, thin, smooth, opaque, light yellowish, variegated with 

 pellucid strigations and spiral lines and a chestnut band, suture sub- 

 plicate ; whorls 4 J, scarcely convex, the last descending and subcon- 

 stricted in front ; lip white, shortly expanded, columellar margin 

 nearly closing the umbilicus. Diam. 12 mill. 



Near Papantla, Mexico. 

 H. BICINCTA, Pfr. PL 19, fig. 78. 



Narrowly umbilicated, thin, glabrous, pellucid, light greyish yel- 

 low, with two narrow spiral bands, the upper one chestnut color, the 

 lower one milk white, suture white-margined ; whorls 4, somewhat 



