o24 LAND AND FRESHWATER 
the outermost laterals, and the teeth are numerous, arranged 
thus :— 
LOOT, TASS SeLO0 
10. des 00 
Grrasta NAGAENSIS, G.-A. (Plate LXI. figs. 3, 3a, 3b, 3c.) 
Helicarion nagaense, Godwin-Austen, Journ. A. 8. B. 1875, p. 5, 
pl. il. figs. 3, 3a, 36, de. 
Girasia nagaensis, Godwin-Austen, P. Z. 8. 1880, p. 294. 
Helicarion (sec. A) nagaensis, Pfeiffer, ed. Cless. Nomen. Helic. 
Vivent. p. 30. 
Original description: —* Animal ochre-colour, prettily mottled and 
dotted with a darker shade of the same; the mantle covers nearly 
the whole shell; a narrow white line, commencing near the 
posterior margin of the slit disclosing the shell, extends round 
towards the respiratory orifice on the right-hand side, and in front 
another line curves round to the left anterior side. Mucous gland 
as in H. gigas. Length about 3 inches. Shell ovate, exceedingly 
thin and brittle. 
‘¢ Major diam, 0°90, minor diam. 0°55 inch.” 
GIRASIA DALHOUSIa, n. sp. (Plate LXI. figs. 1, la, and Plate 
LXII. figs. 4, 4 a.) 
The Station of Dalhousie, Chamba Hills (W. Theobald). 
The animal in spirit is of a very pale ochre tint, with no markings 
of any kind. The mantle as in typical Girasia, the thin shell show- 
ing in an oval opening of the shell-lobes. 
The shell is of an olive-brown colour, convex above, oval on the 
periphery, membranaceous, broader than in the type, or in G, crocea, 
with a very thin, white, shelly lining. 
Major diam. 13-0, minor 8-0 mm. 
Length of animal in spirit 0-30 mm. 
The radula is arranged thus (Plate LXII. fig. 4) :— 
1280.02 «-14y doyle 2 5 128 
144.1. 144 
It differs somewhat from the eastern species; the central tooth is 
very long, narrow, and tricuspid ; the median teeth are much curved, 
the points directed somewhat outwards, they are tricuspid, but not 
sharply so, the inner cusp being indistinct ; the laterals are bicuspid, 
the outer cusp being larger and rounder in form than the inner. 
Jaw straight in front, with only a very slight central projection 
(Plate LXII. fig. 4 a). 
This is the first species of the genus Girasia I have seen from the 
N.W. Himalaya, and it is therefore of interest as regards distribu- 
tion: there was only a single specimen in the bottle sent me by 
Mr. Theobold, so that it will be important to find it again in the 
same locality ; the species associated with it (2. e. in same bottle) 
were all N.W.-Himalayan forms. 
