Notes on Fresh-water Giliate Protozoa of India. — II. 29 
tioned above I would not refer his form and mine to Plagiopogon, 
but as they merit separate specific distinction I would, in honour 
of its discoverer, confer upon it the title of Coleps kenti. 
Coleys uncinatus Claparede & Lachmann. 
Forms belonging to this species were found in the water of a 
pond situated in the Lawrence Gardens in August 1918. The 
body was elongated, oval, and provided with four posterior spines. 
The average size of the specimens was 70//, by 28//,. On staining 
with acetic methyl-green the spherical macronucleus and the small 
micronucleus situated close by it were observed. 
Family Cyclodinina Stein. 
Genus Didinium Stein. 
Didinium balbianii Biitschli. 
Specimens of this rare form, with only a single ciliary wreath 
near the base of the proboscis, were found in the water from a 
pond near the river Eavi in October 1919. 
Family Trachelina Stein. 
Genus Dileptus Dujardin emend. Wrzesniowski. 
Dileptus gig as (Clap. & Lachm.) Wrzesniowski. 
(Syn. Vibrio anser 0. F. Muller, Amphileptus gigas Claparede & 
Lachmann.) 
Animalcules belonging to this species were found in water 
from a small pool on the bank of the river Eavi in July 1920. 
The water collected contained the bottom mud and leaves of some 
grass which was growing in the pool. Specimens, though not 
sticking to the grass, were invariably found by placing on the 
slide a leaf with a drop of water containing the forms and then 
removing the leaf. The body and the neck showed movements 
which are so characteristic of the species. Specimens were how- 
ever smaller than the size usually recorded for the species. They 
measured on an average 200//, only. The ratio between the length 
of the neck and that of the rest of the body varies a good deal in 
this species, and in the specimens that came under my observation 
was as 2 to 3. The cilia covering the body were very fine and 
close-set, and the neck showed a narrow groove along which the 
stronger adoral cilia were situated. The body did not show any 
longitudinal striations, but the endoplasm was finely granular. 
The row of contractile vacuoles extended into the proboscis also. 
The tail was obtusely pointed, and not drawn out into a distinct 
prolongation. 
