STUDIES ON CEYLON HAIMATOZOA. 665 
Studies on Ceylon Hzematozoa. 
No, 1.—The Life Cycle of Trypanosoma vittate. 
By 
Muriel Robertson, M.A., 
Carnegie Fellow in the University of Glasgow. 
With Plates 16 and 17 and 4 Text-figures. 
CONTENTS. 
PAGE 
Il. INTRODUCTION 3 ; 3 : E065 
Il. OBSERVATIONS ON THE LIVE TRYPANOSOME : . 668 
III. OBSERVATIONS ON STAINED MATERIAL . , . eR 
IV. GENERAL REMARKS AND CONCLUSIONS 3 . 691 
V. EXPLANATION OF FIGURES p : : . 693 
I. Inrropucrion. 
In August, 1907, I went to Ceylon with a view to investi- 
gating the Protozoan blood parasites of Reptiles. The 
following memoir gives an account of the 'rypanosome infec- 
tion found in the soft Tortoise Hmyda vittata. 
I wish here to express my great indebtedness to Dr. Arthur 
Willey, F.R.S., Director of the Government Museum in 
Colombo. He not only obtained laboratory facilities for me 
at the museum but also gave me the most enthusiastic assist- 
ance in every possible direction. In some instances, at very 
considerable inconvenience to himself, he actually sent me 
the infected material which he had come across while engaged 
upon other work in the jungle. Indeed it is to him, as will 
appear later, that I owe the discovery of the true intermediate 
host in the infection which forms the subject of this paper. 
VOL. 03, PART 4.—NEW SERIES. 47 
