162 HELIX. 



H. PSEUDOPHIS, W. Blanford. PI. 35, figs. 80, 81. 



Sinistral, widely mnbilicated, rather thin, light ochraceous; whorls 

 7, the last constricted behind the aperture and suddenly deflected; 

 peristome reflected, the extremities joined by an elevated, curved 

 callus, slightly incised above and below, vertical parietal lamina 

 giving out a posterior horizontal extension, with an additional long 

 horizontal lamina above and a shorter one below, six palatal plicae. 



Diam. 12*5 mill. 



Thayatmyo, Pegu. 



H. BRACHYDISCUS, Austen. PI. 36, figs. 32-34. 



Dextral, with wide, shallow umbilicus, rather thick, dull umber 

 brown, epidermis thick, with cloth-like texture, ribbed, in young, 

 fresh shells the upper outer margin has a close, regular, epidermal 

 fringe ; whorls 7, the last rather flat on the side and angular above, 

 descending at the very oblique aperture ; peristome strongly reflected, 

 thickened, white, the margins connected by a well-raised ridge, 

 notched above and below, from the upper middle portion of this 

 proceeds a long horizontal lamella towards the vertical parietal 

 lamina, but terminates and then is again developed, becoming 

 thicker and higher as it approaches the latter, from the lower end 

 of the vertical lamina proceeds a short lamella towards the aperture, 

 and a very short, slight, free lamina is just below the vertical 

 barriers, six simple palatal teeth. Diam. 22 mill. 



Moulmein, Tenasserim, etc. 



H. PERARCTA, Blanford. PL 35, figs. 91-95. 



Sinistral, widely umbilicated, rather thin, white, sinuously trans- 

 versely striate, obsoletely decussated; whorls 6, convex above and 

 on the periphery, subcompressed and suddenly deflected at the 

 aperture; peristome white, connected by a parietal curved callus, 

 with median vertical lamina, a strong transverse one above, a longer, 

 narrower transverse one below, and one or two behind it, seven 

 palatal plicse. Diam. 11 mill. 



Ava. 



H. SHANENSIS, Stoliczka. PL 36, figs. 10, 11. 



Whorls 62, obliquely, and obsoletely concentrically striate, 

 periphery rounded, suture margined ; light brown ; arrangement of 

 parietal laminae similar to H. perarcta. Diam. 21 mill. 



Burmah. 



