66 SPOLIA ZEYLANICA. 
measure to Dr. Willey’s enthusiastic collaboration. I am glad 
to have this opportunity of thanking him once more, and of 
acknowledging my great indebtedness to him. ‘ 
This paper was completed, after working through a part of the 
material which t brought back to England, at the Imperial College 
of Science and Technology, London, 8.W. 
I have divided the account of my work into two main parts :— 
(1) A record, with notes, of the animals examined ; and 
(2) A description of some new forms which I found in the 
course of examining these animals. 
I—RECORD OF ANIMALS EXAMINED, WITH 
RESULTS AND COMMENTS. 
A.—Record of Animals whose Blood was examined for Protozoa. 
FISHES. 
With the exception of Saccobranchus fossilis, all the seven species 
of fresh-water fish, whose blood I was able to examine, proved 
negative. 
A.— Infected. 
1. Saccobranchus fossilis—The record of the examination of the 
blood of this species is as follows :— 
One individual from Colombo lake (part not recorded) (July). 
Blood negative. Twelve specimens from Colombo lake (Hunu- 
pitiya and Kollupitiya) (Sept.). Blood of all negative. 
Four specimens from Nugegoda (Sept.). Blood negative. 
Two specimens from Fort side of Colombo lake (Sept.). Both 
infected with trypanosomes. (See comments below.) 
B.—Not infected. 
Anabas scandens.—-One individual, Colombo (July). 
Clarias magur.—One individual, Colombo (Sept.). 
Etroplus suratensis.—Two individuals, Colombo lake (Sept.). 
Gobius giuris.—Four specimens, Colombo lake (Sept.). 
Ophvocephalus punctatus.—Two specimens, Colombo (Sept.). | 
Ophiocephalus striatus.—A single individual, Colombo (Sept.). 
pers Se Sv eke 
Comments.—The trypanosome found in Saccobranchus is that 
already described by Castellani and Willey (1904) under the name 
Trypanosoma saccobranchi. For the benefit of future workers who 
may seek this trypanosome, I would call attention to the curious 
distribution which it seems to have in the fishes of the Colombo 
lake. My experience indicates that only those fish taken from 
the Fort side of the lake are infected, 
