HELIX. 57 



H. PERPLANATA, Nevill. PI. 13, figs. 49-51. 



Shell widely umbi Heated, flattened on the top, convex below, 

 periphery distinctly carinated ; whorls 7, slowly increasing, striate 

 above, smooth below. Diara. 16 mill. 



Upper Burmah. 



No diagnosis has been published ; the above particulars are 

 gleaned from some remarks upon the species published by its author. 



H. AKOWTONGENSIS, Theobald. PL 12, fig. 73. 



Widely umbilicated, rather thin, light corneous, densely granular, 

 with a thin sub-bristly epidermis ; whorls 5, flattened, the last 

 shortly deflected in front, acutely carinated, base tumid around the 

 umbilicus; peristome thin, margins approaching, a little expanded 

 above, reflected at the base. Diani. 15 mill. 



Akowtong, Province of Pegu. 



My figure (from Conch. Indica), which corresponds with the 

 description, and considerably resembles the preceding species, is 

 said, nevertheless, not to represent it. No other figure has been 

 published. 



H. GABATA, Gould. PL 14, figs. 82, 83. 



Rather widely umbilicated, somewhat thin, slightly striate, some- 

 what shining, whitish corneous, carina chestnut banded ; whorls 4i 

 somewhat flattened above, the last shortly descending in front, peri- 

 phery carinated, base tumid around the umbilicus ; peristome white, 



expanded and a little reflected. Diam. 23 mill. 



Tavoy, Burmah. 

 H. Merguiensis, Phil. (fig. 83), is a synonym. 



H. SMITHII, Bock. PL 11, figs. 62, 63. 



Moderately umbilicated, semitransparent, striated by fine growth 

 lines, greyish white under a light horn-colored epidermis ; whorls 4, 

 flattened, the last slightly descending at the mouth, with a strongly 

 marked obtuse keel, defined by a groove above, convex below, ob- 

 tusely angular around the umbilicus ; peristome thin, expanded. 



Diam. 21 mill. 



Paio, Sumatra. 

 H. RADULELLA, Heude. PL 12, figs. 92-95. 



Widely umbilicated, epidermis reddish brown, covered by wart- 

 like scales, with a light peripheral zone, suture impressed ; whorls 

 6, the periphery obtusely angulated; peristome acute, scarcely re- 

 flected. Diam. 13 mill. 



Talifou, China. 



