1880.] W. T. Blanford — Contributions to Indian Malacology. 217 



This species closely resembles It. (O.) riibens of Mauritius in form, 

 but differs in sculpture, the shape of the Avhorls, &c. The umbilical keel 

 is but faintly marked. Several specimens were procured about ten years 

 ago by Dr. J. Anderson, Superintendent of the Indian Museum, to whom 

 I am indebted for the types. They were obtained, I believe, at some dis- 

 tance from the coast. 



30. Eealia pallida, sp. nov., Plate II, Fig. 19. 



Testa perforata, ovato-conica, tenuis, a JiiJo-cornea, Imvigata, nitiditla, 

 vix verticalife)- striatula. Spira conica, apice acuto, suturd impressd. 

 Afiifr. 6, convexiusculi ; tdtimus ad periplieriam atque subtiis rotundatus, 

 circa perforationem radiatim striatus. Apertura fere verticalis, ovata, 

 spiiram altitudine Jiaud cequans. 'Peristoma tenue, marginihus siibconniven- 

 tibus, callo teniu junctis, externa recto, coluinellari expansiusculo. Operc? 

 Long. diam. 3; ap. long vix 2, lat. 1| mm. 



Hab. In insulis Andamanieis cum prsecedente (J". Anderson). 



Shell perforate, ovately conical, thin, whitish horny, smooth, moder- 

 ately polished, with faint subobsolete vertical striation. (There is also, 

 beneath the lens, a faint indication of minute spiral striation, but I am not 

 sure that this is not an individual peculiarity.) Spire conical, apex acute, 

 suture impressed. Whorls 6, slightly convex, the last rounded at the peri- 

 phery and below, radiately striated around the perforation. Aperture near- 

 ly vertical, ovate, shorter than spire. Peristome thin, margins approaching 

 each other, joined by a thin callus ; the outer lip simple, the columellar 

 slightly expanded. Length 017, diameter 12, length of aperture 0'075, 

 breadth 06 inch. 



I have but a single specimen of this species, which wants both the 

 keels of the last species, and differs besides in size, colour, and sculpture. 

 The specimen is perhaps not quite adult, but there can, I think, be no 

 question of its being a peculiar form. 



Neither of the two species above described can be confounded with the 

 globose B. (O.) distermina (Benson, Ann. & Mag. N. H. Dec. 1863; Pfeif., 

 Mon. Pneum. Suppl. ii. p. 178) with its costulate striation near the suture 

 and inside the umbilicus, its rounded whorls, and its aperture equal in 

 length to the spire. A glance at the figure of this shell in the ' Concholo- 

 gia Indica,' pi. clxv. fig. 10, will suffice to show how different it is from 

 eithev H. a}iderso7ii or H. pallida. Even if, as is possible, Benson's type 

 was a young shell, it was manifestly a very distinct species, and the adult 

 ■would probably resemble Bealia {Omphalotropis) globosa of Mauritius in 

 shape. 



