Published online by Cambridge University Press: 18 November 2009
One male specimen was collected from the liver of a short tailed wallaby, Macropus brachyurus, which died in the Zoological Gardens, London on 26th September 1960. It is a slender worm 82 mm. in length and 0·41 mm. in maximum width. The anterior extremity is rounded. There is a small buccal cavity and at the base of this there is a prominent cuticularised ring. The cephalic end bears four pairs of submedian papillae and a pair of amphids. The en face view was not studied because of the lack of specimens. The cuticle is transversely striated all over the body and there are bosses like small slightly curved markings on it.