160 HELIX. 



by spiral striae, corneous, under a dark scabrous epidermis ; whorls 

 7J, narrow, slowly increasing, the last shortly descending in front, 

 subcarinate above, the carina hispid in young specimens, convex 

 below, compressed around the conical umbilicus; lip reflected, 

 whitish, its extremities joined by a parietal callus, aperture with a 

 simple vertical and no horizontal parietal lamella, and six palatal 

 plicae. Diam. 14 mill. 



Sikkim region, Himalayas, India. 



H. MUNIPURENSIS, Austen. PI. 34, figs. 56-58. 



Dextral, widely and deeply umbilicated, thick, light ochraceous 

 brown, distantly maculated above ; whorls 7, flat, the last constricted 

 behind the aperture and scarcely descending; peristome white, 

 slightly reflected, the margins joined by a parietal callus, a vertical 

 parietal lamella, a third of a volution from the mouth, palatal 

 teeth 7. Diam. 11 mill. 



Munipur, India; alt. 3000-4000 ft. 



H. LAOMONTANA, Pfr. PI. 34, figs. 60-62. 



Very widely umbilicated, solid, closely striate, brownish ; whorl? 

 62, scarcely striate, slowly increasing, periphery rounded, subdilated 

 and deflected in front, base strongly striate in front; pe-ristome, 

 whitish, thickened, a little reflected, its margins joined by a parietal 

 callus; palatal plicae simple, parietal wall with a simple vertical 

 lamina and no horizontal ones. Diam. 32 mill. 



Lao Mts., Cambodia. 



H. MACROMPHALUS, W. Blanford. PL 34, figs. 65-68. 



Sinistral, widely umbilicated, rather thin, light corneous, with 

 incremental curved plicae, decussated by spiral lirae, at the periphery 

 and below striulate, almost smooth, with a few spiral striae around 

 the umbilicus; whorls 4? oil, flattened, narrow, the last scarcely 

 wider, subangulate above, slightly descending in front; peristome 

 whitish, a little thickened and reflected, the converging margins 

 joined by a thin callus, a vertical parietal plica and biseriate, dupli- 

 cate palatal plicae. Diam. 6*5 mill. 



Kliasi Mts. and near Darjiling, India. 



H. PLECTOSTOMA, Benson. PI. 34, figs. 69, 70. 



Sinistral, moderately umbilicated, whitish, tinder a deciduous 

 corneous epidermis; whorls 6, radiately plicate, decussated by close 

 elevated spiral lines, the last angulated above, with a few elevated 



