Volume VI 
JANUARY, 1914 
No. 4 
THE TREMATODE PARASITES OF 
NORTH QUEENSLAND. I. 
By WILLIAM NICOLL, M.A, D.Sc., M.D. 
(■Australian Institute of Tropical Medicine, Townsville, Queensland.) 
(With Plates XXIII and XXIV.) 
It is only within the last half-dozen years that any serious attempt 
has been made to deal systematically with the parasitic worms of 
Australia. In 1909 Dr T. Harvey Johnston commenced what has 
proved to be a most extensive and successful survey of the cestode 
parasites. Dealing at first chiefly with Southern forms, he has latterly 
(1912) continued his investigations in Queensland and has extended 
them to include Nematodes and Echinorhynchs. Some years previously 
(1901) Dr S. J. Johnston of Sydney had started a study of the Trematode 
parasites, but this did not lead to any outstanding results until last 
year, when his important paper on the Trematode parasites of Austra¬ 
lian frogs appeared. He has followed this up by another important 
work on Trematodes from North Queensland, which has appeared 
during the present year. 
Dr Georgina Sweet of Melbourne has probably done more than 
anyone of receut years to initiate and encourage the study of Australian 
parasitic worms, especially from the economic side, and her “Endo- 
parasites of Australian Stock and Native Fauna” (1909) marks what 
may be regarded as the beginning of renewed interest in these matters. 
The observations of earlier workers were chiefly confined to the parasites 
of domestic animals, and the only really considerable contribution to 
our knowledge of the parasites of the Australian native fauna was that 
made by Krefft (1871). 
Parasitology vi 22 
