2560 N. ANNANDALE: An Indian Freshwater Medusa. [Vou. VII, *12.] 
In the adult medusa the total number is 128. The sense-organs 
have the structure characteristic of Limnocnida. 
Nematocysts.—The nematocysts resemble those of other species 
of Limnocmda both in shape and in arrangement. Round the 
margin of the bell they form a ‘‘ nettle-band,’’ in which they are 
found in various stages of development, always lie parallel to the 
external surface and never possess cnidocils. In the basal part of 
the primary tentacles they have the same position and still lack 
cnidocils. In this region they are very numerous. From a_ point 
a short distance beyond that at which the tentacle projects from 
the edge of the bell, however, they are arranged in very definite 
papillae. In these they stand out almost vertically from the sur- 
face and are provided with cnidocils. On the distal part of the 
tentacle the papillae are arranged in transverse rings round it, each 
ring consisting of four papillae. On the secondary tentacles 
the papillae extend nearly tothe base 
Types (many specimens from Medha, Yenna valley, between 
Mahableshwar and Satara). No. Z.E.V. 0: Ind. Mus. (f. H. 
Gravely : May, 1912). 
Distribution.—Pools in streams in the Western Ghats that 
finally enter tributaries of the Kistna river, Satara district, Bom- 
bay Presidency. 
On the manubrium of specimens from Tambi in the Koyna 
valley I found numerous examples of the Infusorian Tvichodina 
pediculus, Ehrenberg, a species which in Europe lives symbioti- 
cally on Hydra and other aquatic organisms. 
ann 
