HEMATOZOA OF AUSTRALIAN BATRACHIANS. 413 
River in South Australia. In both instances the absence 
of widespread infestations of many species of frogs suggests 
either that these respective parasites are almost or quite 
confined to single species and are not capable of living ir 
others, or else that some feature in the life-history of the 
infected species enables the intermediate host to transmit 
the parasite from individual to individual, this feature being 
absent in non-infected kinds. 
H#MOGREGARINA (LANKESTERELLA) HYL&, Cleland and 
Johnston. 
In only one out of nine specimens of Hyla ccerulea 
examined was this hematozoon detected. This frog came 
from EKidsvold in Queensland, the range of the parasite 
being thus extended from Sydney to this part. 
TRYPANOSOMA ROTATORIUM, Mayer (?) 
In a specimen of Limnodynastes tasmaniensis obtained 
on the river Murray near Morgan, South Australia, in 
November, 1913, trypanosomes were present. We have 
previously recorded them from Queensland in this species 
and in L. ornatus(?) under the specific name of Trypano- 
soma rotatorium, Mayer (?). The trypanosomes in the river 
Murray frog were again very pleomorphic, some being very 
narrow and some broad, some almost unstained and very 
slender, some deeply stained and others coarsely longitu- 
dinally streaked. The sizes varied from 20+ long by 2°5u 
broad, up to 52y long by 8°5y at the widest part in a deeply 
stained example. 
The results of these further examinations may be tabu- 
lated as follows :— 
List I.—Species in which Hematozoa were found :— 
Hyla coerulea, Sydney, October 1910, nil; November, 1910, 
nil; Hidsvold, Queensland, December, 1910, nil; Sydney 
(two sps.), February, 1911, nil; Liverpool, Sydney, 
