HELIX. 159 



H. STENOCHILA, Mollendorff. 



Perspectively umbilicated, costulate striate, decussated by rugulose 

 spiral lines, brownish corneous ; whorls 7, the last shortly reflected 

 in front, the periphery obtusely angulated ; palate with five short 

 lamellae, parietal wall with a strong vertical lamina and five small 

 teeth in front of it. Diam. 8'5 mill. 



Badung, Prov. Hubei, China. 



Differs from the next species in being smaller, with more numerous 

 whorls, in the sculpture being alike above and below, and the 

 absence of peripheral fimbrise. 



H. MURATA, Heude. PI. 33, figs. 13-15. 



Widely umbilicated, opaque above, pellucid below, brownish, with 

 rugose strise above, fimbriated on the peripheral angle; whorls 5, 

 palate with four principal short lamellae, with small denticles above 

 and below, parietal wall with a vertical lamina and five teeth in 

 front of it. 



Tchenlceou, China. 



Subsection II, PLECTOPYLIS, Benson, 1860. 



H. SERICA, Austen. PI. 34, figs. 49-52. 



Dextral, openly umbilicated, light corneous brown, with oblique 

 narrow bands above, epidermis thin; whorls 7, narrow, the last 

 descending in front ; lip white, reflected, continued on the parietal 

 wall, aperture with six palatal teeth, a third of a whorl within, the 

 upper small, a bifurcate lamella on the parietal wall. 



Diam. 12'5 mill. 



Burrail Mts., India. 

 H. OGLEI, Austen. PL 36, figs. 29-31. 



Dextral, widely umbilicated, pale brown, with close-set sienna 

 brown markings crossing the whorls, epidermis thick, rough, some- 

 what nacreous ; whorls 8, the last slightly descending towards the 

 oblique aperture ; peristome slightly reflected, white, continued by 

 a slight parietal callus, there is a single vertical parietal lamina, 

 with buttress-like supports on the posterior side above and below, 

 palatal teeth six, the sixth longer, double. Diam. 16 mill. 



Near Sadiya, Assam. 



H. PINACIS. Benson. PI. 34, figs. 53-55. 



Sinistral, widely umbilicated, roughly, obliquely plicate-striate 

 above, with close spiral line, below with flexuous oblique, decussated 



