HELIX. 61 



H. ACCRESCENS, Heude. PL 13, figs. 26-28. 



Widely umbi Heated, thin, pellucid corneous, with a whitish peri- 

 pheral band; whorls 7, narrow, slightly convex, slowly increasing, 

 the last obtusely angulated, peristome white, narrowly reflected. 



Diam. 16 mill. 



Outchang, China. 



Heude thinks this may prove a minor variety of H. vermes. 



H. OLDHAMI, Benson. PL 13, fig. 25. 



Widely umbilicated, thin, irregularly obliquely flexuously striate, 

 corneous (?), suture impressed; whorls 6!, slowly increasing, sub- 

 planulate, the last whorl shortly and rapidly descending in front, 

 obtusely angulated above, base convex, angular around the umbili- 

 cus ; peristome a little expanded, margins approaching. 



Diam. 13 mill. 



Burmah. 

 H. FRIEDELIANA, Martens. PL 13, figs. 29-31. 



Widely umbilicated, slightly obliquely striate, olivaceous brown ; 

 whorls ">'., scarcely convex, the last subangulated, deflected in front, 

 base convexly flattened ; peristome white, slightly thickened, ex- 

 panded, margins approaching. Diam. 18 mill. 



Nagasaki, Japan. 

 H. CIRCULUS, Pfr. PL 13, fig. 32. 



Moderately umbilicated, solid, rugulosely striate, somewhat shin- 

 ing, white; whorls 5-1, convex, the last obsoletely angulated, not 

 descending; peristome thickened within, shortly expanded, margins 

 approaching. Diam. 19 mill. 



Loo Choo Is. 

 H. ALPIIONSI, Desh. PL 13, figs. 34, 35. 



Widely umbilicated, thin, fragile, corneous, brownish, yellowish- 

 white, obliquely lineated and irregularly punctate, subplicate and 

 spirally substriate above, smooth below ; whorls 7, narrow, the last 

 a little deflected in front, obtusely angulated above; peristome 

 sinuous, reflected, columellar lip wide, with tooth-like thickening. 



Diam. 9 mill. 



Prov. Moupin, Eastern Thibet. 



H. PLATYOMPHALA, Mollendorff. PL 13, fig. 44. 



Very widely umbilicated, thin, subpellucid, corneous, closely ob- 

 liquely striated, suture well impressed; whorls 7, subconvex, the 

 last obsoletely angulated above, with a whitish zone, and very 



