PARASITIC PROTOZOA FROM CEYLON. 65 
ON SOME PARASITIC PROTOZOA FROM CEYLON. 
By C. CrirrorD DOoBELL, 
Fellow of Trinity College, Cambridje ; Lecturer in Protistology and Cytology 
at the Imperial College of Science and Technology, London, S.W. 
(With Plate IT.) 
CONTENTS. 
Introduction. 
Record of Animals examined, with Results and Comments 
Descriptions of some new Forms. {4 
Concluding Remarks. ee 
Literature References. ) 
Description of Plate. 
INTRODUCTION. 
NHE following pages are the outcome of a recent visit which I 
made to Ceylon whilst holding the Balfour Studentship of 
Cambridge University. During my stay in the Island, which 
dated from the beginning of July until the end of September, I 
examined a number of animals from various parts of the country, 
with a view to discovering parasitic Protozoa. A good deal of my 
work was attended with entirely negative results, though a certain 
number of new forms were found, which are here recorded. Both 
negative and positive results, however, are given in the following 
pages, in order to assist future workers who may take up the 
investigation of Ceylon Protozoa. 
The work was carried out chiefly in the laboratory attached to 
the Museum at Colombo, in the laboratory at the Botanic Gardens, 
Peradeniya, and in the resthouse at Trincomalee. 
I wish here to offer my warmest thanks to those who have helped 
me, in one way or another, in my work—especially to Mr. E. E. 
Green, Government Entomologist, and to Mr. R. H. Lock, Acting 
Director of the Botanic Gardens, for their assistance during my stay 
in Peradeniya; and to Dr. Willey, the late Director of the Colombo 
Museum, for his unfailing aid and kindness throughout my visit. 
Though the results of my work here recorded are inconsiderable, 
they would have been far less but for Dr. Willey’s assistance. His 
extensive knowledge of the fauna of Ceylon, and his untiring zeal 
in obtaining material for me, proved of incalculable value. What- 
ever merit attaches to the results here set forth is due in a large 
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