368 
THE TREMATODE PARASITES OF NORTH 
QUEENSLAND. 
IV. PARASITES OF REPTILES AND FROGS. 
By william NICOLL, M.A., D.Sc., M.D., D.P.H. 
{From the Australian Institute of Trojrical Medicine.) 
(With Plate VIII.) 
The preparation of the fourth part of this paper was brought to an 
abrupt conclusion in November, 1915, by an illness which necessitated 
my return to a cooler climate. On that account the present part is 
incomplete, several new and interesting forms being left undescribed. 
These, together with the species described here, are deposited in the 
collection of the Australian Institute of Tropical Medicine. 
Only a limited number of .species of reptiles and amphibia were 
available for examination and there can be little doubt that a parasitic 
fauna of considerably greater variety will eventually be recorded. 
In the first part of this paper (1914) five new species were described 
from reptiles and frogs, namely Eurytrema crucifer from the slow worm 
{Delma fraseri)-, Mesocoelium rnicroori from the tree-frogs {Hyla coerulea 
and H. gracilenta) and the blue-tongued lizard {Tiliqua scincoides)] 
DolicJwpera parvula from the carpet snake {Python variegatus ); Aptorchis 
aequalis from the freshwater turtle {Emydura latisternum) and the larval 
Tetracotyle tiliquae from the blue-tongued lizard {Tiliqua scincoides). 
S. J. Johnston (1912) has described several forms from North Aus¬ 
tralian frogs and these, together with the few species mentioned in the 
present paper, constitute all that are known so far. 
Genus BRACHYSACCUS S. J. Johnston. 
Brachysaccus juvenilis n. sp. 
(PI. vm, fig. 1.) 
Numerous specimens of this parasite were taken from the intestine 
of two burrowing frogs {Chiroleptes brevipahnatus) in July. They were 
unfortunately all immature or just beginning to produce ova. 
