
JOHNSTON AND MAWSON~—AVIAN AND FISH NEMATODES 551 
AMIDISTOMUM BIZ1URAE n, sp, 
(Fig. 6.) 
A single female worm referable to the genus Amidoslomum was taken from 
the musk duck, Biziura lobata, Its measurements and characters were not found 
to correspond with those of any known species of the genus, and a brief description 
is now given, 
The total length is 7-9 mm., that of the oesophagus is indeterminable. The 
buceal capsule is thin-walled, about 11p wide, 7» deep, and contains one large 
tooth, Its upper edge appears to be prolonged into six small digitiform projections. 
The vulva is 1-7 mm, from the posterior end. The eges are 65-T5p by 37m. 
Though the material on which the deseription is based is so scanty, the status 
of a new species is suggested for it, as being convenient for future reference, 
CONTRACAECUM SPICULIGERUM (Rud.). 
This common nematode, already reported as occurring in the stomach of 
various Australian cormorants, is now recorded from Phalacracorax carbo from 
Tailem Bend, where the bird is not ofteu seen. The parasite was mentioned 
previously from this host species in New South Wales by Johnston (1912, 75) 
as Ascaris sp. 
CONTRACAECUM EUDYPTULAE J, and M. 
This parasite has been taken from a penguin, Hudyptula minor, from 
Kangaroo Island. 
CoNTRACAECUM spp. 
Nematodes belonging to the same genus have been obtained from a number 
of birds and fish. In some cases the material was recognisable and has already 
been recorded, but in many cases the wornis were too young or too poorly preserved 
for satisfactory identification aud are here listed as Contracaecum sp. The bird 
hosts were Pelecanus conspicillutus, Micvrocarbo melanoleucus, Chlidonias leuco- 
pareia, Nolophoyx novachollandiae and Egretla alba, 
Very young worms were found sparingly in the mesentery and omentum 
adjacent to the stomach and upper intestine of the following fish: Plectroplites 
anbiguus, Therapon bidyana, Philypnodon grandiceps, Tandanus ltandanus, 
Galaxias olidus, MeCullochella macquariensis, Nannoperca australis, Nematalosa 
erebi and Mugilogobius galway? These small transparent worms are probably 
the larva of C. spiculigerum from cormorants and C. bancrofti from pelicans. 
