48 Records of the Indtan Museum.  [Voy. XVIII, 
species exists, but what precisely that relationship is still remains 
to be discovered. 
We have compared our specimens from Seistan with one named 
by Hutton from the old collection of the Asiatic Society of Bengal 
This shell is stated to be from Kandahar, but Hutton records the 
species only from Quetta, which was in Afghanistan when he wrote. 
It is very possible that the locality is incorrect. The specimen is 
not mature and agrees very closely with the young shell figured 
by us on pl. vii. 
Limnaea gedrosiana, sp. nov. 
(Pl. vii, figs. 2-4.) 
1850. Limnaea peregra, Hutton, Fourn As.Soc Bengal (2) XVIII. p. 655. 
This species, so far at any rate as the shell is concerned, closely 
resembles L. tvanica, but differs in that the shell is smaller, thinner, 
paler in colour, smoother, less regular in outline, with a blunter 
apex, more oblique spiral and slightly more impressed suture. The 
colour is a faint greenish yellow, the shell is extremely fragile and 
when fresh quite transparent. There are 34 or 4 whorls. The 
spire is twice as long in dorsal as in ventral view, occupying at 
least 1 of the length of the shell in the former. The curvature of 
the inner profile of the body-whorl is less convex and not so regular 
as in L. ivanica, and this whorl as a whole is much less symmetri- 
cal. The mouth of the shell is ovate, pointed but not retroverted 
posteriorly. It is almost bilaterally symmetrical and narrower 
than in L. ivanica; its main axis is parallel to that of the shell. 
Though relatively as long as in the preceding species, it only ex- 
tends backwards for about Z the length of the body-whorl. The 
curvature of the outer lip is afiehily flattened in adult shells. The 
anterior margin projects considerably beyond the body-whorl. 
Measurements of Shells (in millimetres). 
Quetta Lab-i-Baring. 
Length a2 Slee tO tl hen apr O eC 
Maximum breadth Me 165356. AO AC ARG 
Length of aperture oe 202) OF 576 @ CO eat 
Breadth of apetture ">. 5:4 4°r 3:673°38 3°6 3-3 
Length of spire (dorsal)... 2°3 * iCal ge ai ee a | 
Breadth of base of spites. 3: 29) f OZ 2 oa27 
The living animal resembles that of L. bactriana, but the foot 
is perhaps rather smaller, the tentacles longer and more pointed 
and the colour pale. 
The alimentary canal also resembles that of L. bactriana, but 
the muscular gizzard is more uniformly developed and more com- 
pact. It can be seen in the living animal through the shell as a 
globular shining mass. 
