HELIX. 81 



Var. MESOMPHALOS, Morelet. 

 Smaller, more depressed, umbilicus wider, last whorl subangulated. 



H. YOCOTULAXA, Doring. 



Moderately umbilicated, somewhat solid, depressed, smoothish and 

 a little shining, minutely striate, chalky white or yellowish, with a 

 single chestnut band; spire flattened, scarcely elevated, suture deep; 

 whorls 4s, a little depressed, earlier ones whitish or yellowish brown, 

 the last somewhat descending in front, pellucid chalky below; aper- 

 ture rounded lunate, peristome expanded-reflected, lipped, thickened, 

 dilated and shortly subangularly reflected on the columellar margin. 



Diana. 20-22 mill., alt. 9-10 mill. 



Yocotukt, Argentine Republic. 



In our copy of the "Boletin" containing the above description 

 the figure referred to is missing. 



H. AUDOUIXI, d'Orb. PL 18, fig. 64. 



Rather widely umbilicated, somewhat solid, rugosely subreticula- 

 ted, brownish violaceous, variegated with whitish lines, and with 

 three dark bands; whorls 6, the last depressed, descending in front; 

 peristome white, thickened, widely expanded, the margins approach- 

 ing, and joined by a parietal callus. Diam. 59 mill. 



Bolivia. 

 Var. ORESIGENA, d'Orb. 



Shell smaller, with a slightly more elevated spire. 

 Diam. 37 mill. 



H. PATASENSIS, Pfr. PL 18, figs. 61-63. 



Widely umbilicated, rather solid, striulate and minutely pitted, 

 fulvous, with a single, narrow, superior chestnut baud; whorls 5, 

 slightly convex, the last depressed rounded, deflected in front; peris- 

 tome whitish, the margins approaching, shortly expanded above, re- 

 flected below. Diam. 36 mill. 



Andes Mts., Prov. of Patas, Peru. 



Var. minor, has the chestnut baud pale-margined. 



H. MACASI, Higgins. PL 18, figs. 57, 58. 



Widely umbilicated, rather solid, lightly, obliquely plicate-striate, 

 and very minutely concentrically striulate, whitish, with three 

 chestnut bands; whorls 5, somewhat convex, the last deflected in 

 front, base convex ; peristome reflected, the margins approaching, 



joined by a thin callus. Diam. 35 mill. 



Macas, Equador. 

 6 



