1919.] N. ANNANDALE & B. Praswap: Mollusca. 37 
Measurements of Shells (in millimetres). 
Quetta. 
Length eH 3426 Bows 32 
Breadth ei Erors Ba Bae Te 
Length of aperture .. 10°6 I0°5 bp Oy 
Breadth of aperture .. 6°1 6°2 6 
The radula is very like that of the varieties of M. pyramts. 
The operculum is very similar to that of the varieties of 
M. pyramts. 
The geographical range of this species is obscure and there has 
evidently been much confusion with M. pyramis and M. tuberculata. 
The only specimens we have examined are from Quetta and the Kan- 
gra Valley. ‘They include Hutton’s type-series (No. 1208 M, Z Ole): 
Melanoides scabra (Miiller) var. elegans (Hutton). 
1850. Melania elegans, Hutton, of. cit., p- 657- 
1885. Melania scabra var. elegans, Nevill, op. cit., p. 284 (in part). 
To judge from Hutton’s description, this is a large, thick, 
strongly sculptured and brilliantly coloured form of Miiller’s Buc- 
cinum scabrum, the specific name of which must be applied in a 
restricted sense to the smaller, thinner-shelled form with definite 
spines at the upper end of the longitudinal ribs on the body-whorl, 
common in South India. 
We can find in the collection no specimens either from the 
Bolan Pass, which lies between Quetta and the plains, or from 
Sibb in Persian Baluchistan, from which place Nevill records speci- 
mens of the typical form. There is, however, a series stated, per- 
haps incorrectly, to be from the Sunderbans in the Gangetic Delta 
which agrees well with Hutton’s description and with the remarks 
made by Nevill in his ‘‘ Hand-List.’’ We figure one of these shells. 
The complete synonymy of M.scabra and its allies has still 
to be worked out. So far as we can say at present, the form 
elegans should not be regarded as having specific value. 
Genus Melanopsis, Férussac. 
1877. Melanopsis, Brot., op. cit., p. 416. 
This genus is represented in the southern part of the Persian 
Plateau! by several species. We have recently obtained from 
Persian Baluchistan a good series of specimens of a very distinct 
new form, for which we propose the name :— 
Melanopsis deserticola, sp. nov. 
(Pl. iii, fig. 8.) 
The shell is smooth as a whole, tapering regularly, acuminate, 
fusiform, a little more than twice as long as broad. The whorls, 
| See Nevill, Hand List Moll. Ind. Mus. 11, pp. 206-209. 
