H. E. Durham 
235 
once and found to be severely infested with a halteridium-like parasite, 
the specimen was taken near the settlement. Here again there is 
doubt whether the parasite existed as an original inhabitant, for a 
number of carrier pigeons had been introduced. 
Carpophaga whartoni was not examined, and Zosterops ncitalis was 
examined but showed no blood parasite. 
Of the three blood parasites, in rat, bat and pigeon, those of the rat 
and pigeon have probably been introduced, whilst that of the bat seems 
likely to liave been an old standing native occurrence. 
Whilst on the topic of animal infectious it may be mentioned that I 
made a number of blood examinations on birds at Kuala Lumpur 
Federated Malay States, often with the kind help of Dr J. D. Gimlette. 
The ordinary pigeons showed heavy infection with Halteridium, so 
also did two pet specimens of a small green parrot. The sparrows and 
a small species of pie were all free of infection, though several of each 
were examined. 
The observations on nagana were carried on with the aid of the 
Tsetse fly Committee of the Royal Society, and the other notes were 
made during the Beriberi expedition of the London School of Tropical 
Medicine. 
