BAHULA. 



251 



The shell from Dainsaug (fig. S2, 1) & E), which I consider co/7/s, 

 differs considerably in other characters from macropleuris. In 

 this last the spire is pyramidal, with flat sides, as in pi. 103, 

 Sg. 1, Mol. Ind. ii. ; in corys (fig. 82, D & E) the spire contracts 

 more rapidly above the antepenultimate whorl, and the sides 

 are decidedly concave. The distant costulatiou is stronger ; the 

 base is flatter ; the columellar margin broader; the aperture is 

 quadrate and smaller; while the umbilicus is also smaller (vide 

 Benson's description, below).] 



[3S2. Rahiila corys, Bs. 



Helix corys, Bs. A. M. N. II. iii, 1859, p. 265. 

 Kaliella (sec. B) corvs, Theob. Suppl. Cat. p. 20. 

 Eahula corys, Gochoin- Austen, Mol. Ind. ii, 1907, p. 218, fig. 1 

 (type), fig. 4 (shell). 



Original description : — " Testa perfomta, elongato-pi/mmidali, 

 oblique confertim minutiasime costidato-striata, cdbida, non nitente ; 

 spira ancjaste pyrainid(di, apice obtusiusmlo, sutura impressa ; an- 

 fractibas 54, conve.viuscidis, idtimo ad peripheriamfiloso-carinaio, basi 

 planiusada ; apertura obliqua ?, quadrata, lonf/itudiiie latitudinem 

 cfquante, peristomate tenui, recto, marrjine columellari verticali, longe 

 vix expansiuscido. 



" Diam. 2, long. 3 mill. 



" Habitat in valle Eungun [Eungnu], prope Darjiling, rarissime 

 occurreus. 



" A single dead specimen occurred to Mr. W. T. Blanford. 

 This minute shell is of a type allied to the last-described species 

 in form, but is very differeutly sculptured. Its more pointed, 

 not papillate apex, and the absence of costulatiou at somewhat 

 remote intervals, and of a marginate suture, through so many 

 whorls, prove that it is not the young of macropleuris. From the 

 clear horn-coloured Helix fastigiata, Hutton, of the Western 

 Himalaya, it may be known by its narrower spire, decided sculp- 

 ture, minute size, the absence of a marginate suture, and by its 

 perforate base ; and from the dark-coloured H. barralcporensis, Pfr., 

 of the Sikkim Terai, by the first three characters."] 



383. Rahula hascauda, Bs. (Helix) A. M. N. H. (3) iii. 1859, p. 186 ; 

 Pfr. (Helix) Mon. Hel. v, 1868, p. 2.56; H. .V T. (Helix) C. I. 

 1876, pi. 16, fig. 1; Nevill (y^-Aninii?), Hand-l. i, 1878, p. 42; 

 [Godivin-Austen, Mol. Ind. ii, 1907, p. 218, pi. 117, figs. 1, 

 la, 3, 3« (shells).] 



Shell very deeply umbilicated, subtrochiformly conoid, orna- 

 mented with oblique rather distant raised ribs above, less raised, 

 closer and flexuous below, rufous horny ; spire conical, apex 

 obtuse, suture well impressed ; whorls (ik, convex, slowing increas- 

 ing, the last not descending with a raised keel at the periphery, 

 convex beneath, subaugulate around the umbilicus; aperture 



