300 CTCLOPHOKID.i:. 



"Long. 3j diam. inaior 3, iniu. '2 millim. Ap. diani, cam perist. 

 U milliin." 



IJab. India : Brauiagiri Hills, W^ynaad (Beddonie). 



" Sliell perforated, conoidly ovate, white or pale reddish in 

 colour, with sub-distant oblique filiforni costulatiou, which becomes 

 closer on the last whorl : beneath a microscope there is verv fine 

 close spiral striation, very difficult to detect in general, as in other 

 species of O'jnsthostoma and many Dijyl omnia tince. Spii'e elongately 

 conoid with convex sides, the apex rather acute, suture deep. 

 Whorls 54, convex, the a])ical ones not excentric as in the other 

 Indian species; the penultimate whorl very little larger than 

 those above it. The last whorl is constricted as usual. In front 

 of the constrictiou it is deflected inwards, but less sharply so than 

 in 0. fairbanli, and it does not conceal the umbilicus, the curve 

 being more as in 0. nUfjiricum. Aperture reversed, nearly circular, 

 almost vertical, having scarcely any inclination upwards. Peristome 

 attached for a short distance oidy, touching both the penultimate 

 and ante-penultimate whorls, double, both portions expanded, the 

 outer more broadly reflexed, and interrupted for a short distance 

 where attached, inner peristome continuous. 



"This is the largest form of the genus yet met with, exceeding 

 even the Labuau species 0. crespu/ni, H. Ad. It is much more 

 pupa-shaped than that kind is, but much less so than the two 

 previously described Indian forms, from both of which it may be 

 easily distinguished — by the apical whorls not being excentric, as 

 well as by its much greater size." (Blanford.) 



457. Opisthostoma iiilgiricum, Blanford. 



0}mthostoma nik/irica, Blauford, .T. A.S. B. xxix, 18G0, p. 121, 



pi. 1, figs. 1-5; Pfeiffer, Mon. Pueum. Suppl. '2, 1865, p. 55. 

 OpisthoUoma niUjiricKm, Jjlauford, Pioc. Zool. Soc. 1866, p. 449, 



pi. 38, fig. 13 ; Hanley & Theobald, Concli. Ind. 1875, pi. 117. 



tig. 10; Crosse, Jouni. Conchyl. xxvii, 1879, p. 195. 

 Opistliostoma iiilkjirica, Theobald, Cat. Shells Brit. India, 1876, 



p. 43. 

 Opisthostoma nUi(/iricum, Ancev, Bull. Soc. ^lalac. France, iv, 



1887, p. 274. 

 Opisthostoma {Euopidliostuma) nilyiricum, Kobelt & Mcillendort¥, 



Naehr. Deuts. Malak. Ges. xxx," 1898, p. 134 ; id., Cat. Pneuni. 



1899, p. 54. 

 Opisthostoma (Opisthostoma) nih/iricum, Kobelt, Das Tierreich, 



Liel' 10, 1902, p. 414. 



Original description: — "Testa minima, truncate pupiformis, 

 anguste umbilicata ; spira irregulari, apice obtusa, obliqua, sutura 

 profunda; costulata, interspatiis minutissime decussatis, albida, 

 translucens. Anfractus rotundati, 5, quorum duo primi obliquiter 

 contorti ; ultimus coustrictus, delude inflatus, refractus, ascendens, 

 denique sinistrorsus, anfractum penultimum contingens. Apertura 

 subobliqua, superne versata, orbicularis. Peristoma continuum, 

 incrassatum, duplicatum. 



" Diam. maj. 1-3 mm. ; alt. 1*1 mm." 



