84 HELIX. 



H. BILLEANA, Morch (imfigured). Nicobar Is. 



H. SULCIPES, Morch (unfigured). " " 



H. SANIS, Benson. PI. 16, figs. 3, 4. 



Moderately umbilicated, obliquely subarcuately striulate, sub- 

 granose, corneous, suture very slightly impressed, margined ; whorls 

 5, subplanulate, the periphery with a compressed carina, a little 

 more convex below. Diam. 11 mill. 



Port Blair, Andaman I. 

 H. C ASTRA, Benson. PL 16, figs. 5-7. 



Moderately umbilicated, thin, obliquely sharply striulate, corn- 

 eous, suture margined ; whorls 5 J, planulate, the last very acutely 

 carinated, somewhat plane below. Diam. 12 mill. 



DarjiKng, Sikkim Himalayas. 



H. PERCOMPRESSA, Blanford. PL 16, figs. 8-10. 



Openly umbilicated, thin, corneous, shining, obliquely arcuately 

 striate, suture margined ; whorls 5, convex, periphery very acutely 

 carinated, base a little tumid around the umbilicus. Diam. 12 mill. 



Bhamo, Ava. 

 H. BENIGNA, Pfr. PL 16, figs. 11, 12. 



Widely umbilicated, rugosely striated, decussated by very close 

 minute spiral striae, pellucid, light cinnamon color, suture margined ; 

 whorls 6, scarcely convex, slowly enlarging, periphery acutely 

 carinated, above the carina slightly channeled, base more convex. 



Diam. 32'5 mill. 



Lao Mts., Cambodia. 

 H. SAIGONENSIS, Crosse. PL 17, figs. 13, 14. 



Widely umbilicated, thin, scarcely obliquely striulate^ a little 

 shining, corneous, suture margined ; whorls 6, scarcely convex, the 

 last not descending, with acute carina, base shining, more convex. 



Diam. 11 mill. 



Saigon and Poulo- Condor L, Cochin China. 



H. SHERMANI, Pfr. PL 17, fig. 15. 



Bather widely umbilicated, somewhat solid, obliquely striated and 

 slightly granular, reddish brown, suture margined ; whorls 7, slowly 

 enlarging, somewhat flattened, the last not descending, acutely 

 carinated, base more convex. Diam. 18 mill. 



Ins, Formosa. 

 H. CONOMPHALA, Pfr. PL 17, fig. 16. 



Moderately umbilicated, thin, scarcely striulate, light fulvous 

 with a brown band above and below, suture linear; whorls 4, 



