Notes on Fresh-water Oiliate Protozoa of India. — II. 33 
HYPOTRICHA. 
Family Pleurotrichina Biitschli. 
Genus Stylonycliia Elirbg. 
Stylonychia pustulata (0. F. M.) Ehrbg. 
This form was met with in the stagnant water from a burrow- 
pit (chaubacha) close to the garden well in the Gol Bagh in 
December 1919, in association with Bursaria truncatella . The 
specimens were found in drops of water taken from the surface. 
The body was nof flexible, it was broadest about the middle, almost 
equally wide in front and behind, and abruptly rounded at its 
posterior extremity. The peristome was triangular and did not 
extend to the middle of the body. The cilia were rendered distinct 
by treatment with weak alum solution, and it was observed that 
the frontal cirrhi were eight in number and arranged in the 
characteristic manner ; ventral cirrhi were present, but not distinct, 
and their number could not be ascertained ; the anal cirrhi were 
five in number, turned back, and projecting beyond the posterior 
end of the body. The marginal cilia were set within the border, 
and the row was interrupted at the posterior end by the three 
caudal styles characteristic of the genus, but these were not very 
long. The macronucleus was central, consisting of two parts, oval 
in outline, and one part was partly overlying the other, no connect- 
ing thread being present. 
The specimens examined differed chiefly from the form as 
figured by Kent (Plate XLY, fig. 17) in the marginal row of cilia 
being interrupted at the posterior end, and in the macronuclei 
being situated close together. 
General Summary. 
It is well known that the fresh-water Protozoa are mostly 
cosmopolitan in their distribution. It is therefore not at all 
surprising that although, as the result of work on ciliate Protozoa 
recorded in this and the previous papers (2, 3), the number of 
recorded species for India has been considerably increased, the 
number of species or forms new to science is very small. The 
total number of Ciliates recorded from India by Carter and other 
workers is 28. The number of species that have come under my 
observation is 41, practically all of which I have recorded from 
India for the first time, only two of them — viz. Coleps hirtus and 
Loxophyllum fasciola — having been previously reported by the other 
workers. It is indeed remarkable that none of the other 28 recorded 
by other workers should have come under my observation, and 
that those observed by me — which include some very common and 
cosmopolitan forms, viz. species of the genera Prorodon, Didinium, 
D 
