BY T. HARVEY JOHNSTON. 99 
T consider that L. dingophila should be ranked as a 
synonym of JL. serrata until some anatomical differences 
be noted. The latter is known to infest in its adult 
condition, not only the dog, but also the wolf and fox, and 
occasionally the domesticated animals and man. 
Dipylidium caninum, I. 
Dr. Bancroft’s material contained a number of specimens 
—some being only 20 mm. in length—of this cestode 
which commonly infests cats and dogs in Australia. It 
is now recorded for the first time as a parasite of the dingo. 
Ancylostoma caninum, Ere. 
A few specimens, both male and female, of this species 
of hookworm were found amongst the Eidsvold material. 
A. caninum has already been recorded by me as occurring 
in dogs and occasionally in cats in QueensJand, and in the 
former host in several other States of Austratia. 
Other Parasites. 
As Australian sheep harbour the cystic stage, not 
only of the hydatid cestode, but also of Tania hydatigena 
(T. marginata, Cysticercus tenuicollis), a parasite sometimes 
met with in local dogs, it is not unlikely that the dingo 
may be parasitised by both of these species in sheep 
country. ; 
In south-eastern Australia rabbits are often infested 
with the bladderworm stage of Tenia pisiformis (syn. 7. 
serrata; Cysticercus pisiformis) and Multiceps  serialis 
(syn. Tenia serialis; Cenurus serialis), both of these 
helminths reaching maturity in dogs. No doubt the dingo 
becomes infected in Victoria and New South Wales, and 
perhaps elsewhere, in rabbit-infested districts. 
Amongst the nematodes known to parasitise dogs, 
two are not uncommon in Australia, viz., Dirofilaria 
immitis, Leidy and Toxocara (Toxascaris) canis. The 
former infests the right heart and has been recorded from 
the coastal regions of Queensland and from Western 
Australia, while the latter has been reported from most 
of the States. It is not unlikely that both may be found 
in the dingo. 
