348 Contributions to Indian Malacology. [No. 4, 
of the Cauvery requires examination, and we are convinced that many 
novel forms may yet be obtained from the Western ghats. 
We would especially call attention to the more minute species, 
and above all to any forms belonging to the genera Alycceus, Diplom - 
matina, Opisthostoma, Cyathopoma* or Jerdonia. t The fresh water 
shells also deserve notice. A peculiar species of Neritina, N. Perotteti, 
is, so far as we are aware, confined to the feeders of a single stream 
on the Nilgiris, the Pykara, and we learn from Dr. J erdon that he 
once obtained in the neighbourhood of Mercara, but subsequently 
lost, a few specimens of another peculiar species, which he was never 
able to find again elsewhere. Probably other species also may he 
found. 
No. 1. — Diplommatina, Kingiana, n. s. PI. 1. fig 2. 
Testa dextrorsa, subrimata, ovato eonica, glabra, tenuis cornea ; 
spira conica, apice obtusa, sutura impressa. Anfr. 5| convexi ; ante- 
penultimus major, ultimus parum angustior, antice ascendens. Aper- 
tura subverticalis, circularis, plica columellari nulla ; peristoma sub- 
duplex, incrassatum expansum ; internum continuum. 
Long, vix 2, Diam. 1, Aper. diam. f mm. 
vel „ .08 „ .04 „ .026 unc. 
Hab. in Montibus Ivolamullies dictis, prope urbem Trichinopoly, 
Indise meridionalis : teste W. King. 
This little species is a near ally ofD. Nilgirica, Blanf. PL 1. fig. 
but amply distinguished, both by its smaller size, and by the absence of 
the basal keel of the Nilgiri species. The two together form a well 
marked section of the genus, characterized by a circular mouth and 
smooth whorls. 
No. 2. — Alycccus Pootei, n. s. PI. 1. fig. 3. 
Testa aperte umbilicata, depressa, solida, ad anfractos intenos 
striata, ad ultimum costulato-striata, ad spatium inflatum crebre 
costulata ; spira vix elevata, apice obtusula ; sutura parum impressa. 
Anfr. 4 convexi ; ultimus ad latus medioeriter gibbosus, deinde con- 
strictus, prope aperturam descendens ; spatium constrictum longum, 
* Cyclotus filocincfus, Bens, and C. Malabaricus, Blanf. 
t Cyclostoma trochlea , Bens. ; the operculum is peculiar ; double and exter- 
nally calcareous. 
