94 HELIX. 



H. Tandianensis, Theobald, has been considered a synonym, but 

 Theobald says that the animal has a mucous pore with overhanging 

 spur, which would make it a Zonites. It has not been figured 

 (Jour. As. Soc. Beng., 46, 1881). 



H. CRINIGERA, Benson. PL 18, figs. 93, 94. 



Very narrowly umbilicated, somewhat thin, closely membranously 

 postulate, corneous, suture margined, with a subexserted ciliate 

 carina; whorls 6?, scarcely convex, slowly increasing, with one 

 (rarely several) spiral lirse near the suture, last whorl not descend- 

 ing, periphery ciliately carinated, base a little more convex. 



Diam. 12'5 mill. 



Nilgherri Mts., India. 



H. TABIDA, Pfr. PI. 19, figs. 97, 98. 



Very narrowly umbilicated, turbinate, somewhat solid, closely 

 rugosely striated, epidermis deciduous, brownish ; whorls 8, very 

 slowly increasing, scarcely convex, the last not descending, periphery 

 subangulated, convex above, flattened below. Diam. 17'5 mill. 



Nilgherri Mts., India. 



Like H. Guerini and H. crinigera but larger and not carinated. 



H. MACROPLEURIS, Benson. PI. 19, fig. 99. 



Narrowly umbilicated, minutely, obliquely, arcuately striated, 

 with remote, elevated curved ribs . above, decorticated, whitish, a 

 little shining, apex papillary, suture carinate-margined ; whorls 8, a 

 little convex, the last not descending, with a thread-like peripheral 

 carina, base flattened, a little more convex towards the aperture, 

 and angulate around the umbilicus. Diam. 5 mill. 



Near Darjiling, India. 



H. MERA, Reeve. PI. 19, fig. 100. 



Scarcely umbilicated, depressed orbicular, corneous, subdia- 

 phanous, arcuately, rugosely striated, epidermis very thin, oliva- 

 ceous ; whorls 5, periphery acutely carinated, convexly tumid 

 below. Diam. 27 mill. 



Hob. unknown. 



H. ALPHA, Pfr. PL 19, fig. 1. 



Moderately umbilicated, obliquely striulate and distantly lamel- 

 lately costate, variegated with yellowish and brownish strigations ; 

 whorls 5i, scarcely convex, the last not descending, acutely den- 



