80 HELIX. 



H. SARGI, Crosse and Fischer. PL 17, figs. 51-53. 



Rather widely umbilicated, moderately thick, subobliquely, obso- 

 letely striulate, chestnut brown, without band, suture somewhat 

 deeply impressed ; whorls 5, slowly increasing, the last descending in 

 front, periphery obtusely angulated, base flattened, paler, olivaceous 

 brown ; aperture and periphery white, the latter reflected, margins 

 approaching. Diam. 27*5 mill. 



Tamaja, Guatemala. 

 H. DILTJTA, Pfr. PL 17-, fig. 47. 



Narrowly umbilicated, thin, pellucid, yellowish corneous, with 

 three brown bands, the upper and lower ones wider and paler; 

 whorls 4, somewhat flattened ; periphery simple, flesh-color columellar 

 margin expanded. Diam. 22 mill. 



Cuzco, Peru. 



H. TRIGRAMMEPHORA, Orb. PL 18, fig. 54. 



Moderately umbilicated, striulate, shining, yellowish white, with 

 three narrow chestnut bands; whorls 5, slightly convex, the last 

 descending in front; aperture rounded-lunar, peristome white, ex- 

 panded above, reflected below. Diam. 25 mill. 



Valle grande, Bolivia. 



H. PELLIS-COLUBRI, Phil. PL 19, fig. 72. 



Widely umbilicated, striulate, slightly malleated below; yellowish 

 white, with a single chestnut band; whorls 5i, slightly convex, last 

 whorl subcylindrical, a little descending in front; peristome thick- 

 ened, white, widely reflected. Diam. 35 mill. 



Otusco, Peru. 



H. SEMICLAUSA, Martens. PL 18, figs. 65, 66. 



Narrowly umbilicated, striulate, and slightly, minutely granular, 

 reddish brown, with a single brown band ; whorls 4, rapidly increas- 

 ing, last whorl scarcely descending in front; peristome reflected, 

 flesh color, columellar margin a little dilated, nearly covering the 

 umbilicus. Diam. 37 mill. 



Rodersberg, Brazil. 



H. CLAROMPHALOS, Deville et Hupe. PL 18, figs. 55, 56. 



Rather widely umbilicated, ashy fulvous, unicolored or with one 

 two or three superior brown bands ; lip thickened, reflected. 



Diam. 30 mill. 



Near Cuzco, Peru. 



