A total of 115 Macropus rufus was collected at bimonthly intervals at Menindee, New South Wales, Australia, in 1976 and 1977 and examined for parasites and pathological changes. The animals came from 2 populations, one free-ranging and the other a high-density, enclosed population in Kinchega National Park. No differences in species of helminths present, in prevalence or intensity of infection were noted between the 2 populations. The stomachs were infected with Labiostrongylus longispicularis (prevalence 87.8%), Rugopharynx australis (98.2%), Zoniolaimus spp. (81.6%), Cloacina spp. (71.1%), Papillostrongylus labiatus (47.4%) and Filarinema spp. (92.2%). Hypodontus macropi (93.0%) was the dominant species among the 2 species of cestodes and 3 of nematodes found in the intestine. Progamotaenia festiva (in 74.3%) was found in the bile ducts where it caused mild cholangitis. Only 2 nematode species, F. flagrifer and H. macropi, caused gross and histological lesions. Apart from L. longispicularis none of the helminths showed seasonal variations in prevalence or numbers. Data on worm numbers in relation to host age and on site distribution in the host are presented. The various haematological parameters measured showed no evidence of adverse effects by the parasites, and corticosteroid levels were judged to be within the normal range. The helminth faunas of 9 M. fuliginosus and one M. robustus, grazing sympatrically with M. rufus inside the park are listed. ADDITIONAL ABSTRACT: The parasites reported from 115 red kangaroos (Macropus rufus) in New South Wales in 1976-77 include Tracheomyia macropi (Frogg.), which infected the trachea in 54.5% of the kangaroos [see RAE/B 4, p. 122].

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Coccidial oocysts morphologically consistent with Eimeria ursini Supperer 1957, and E. tasmaniae Supperer 1957 were recovered from the feces of wild and captive hairy-nosed wombats (Lasiorhinus latifrons) in Australia. Eimeria arundeli so. n. was recovered from the feces of wild and captive common wombats (Vombatus ursinus). Eimeria arundeli oocysts are ellipsoidal to slightly ovoid 60.2--67.2 (63.7) X 40.6--47.6 (43.4); micropyle 3 in diameter usually visible; with oocyst wall granular, dark brown and occasionally opaque, 4--7 thick; inner oocyst wall clear, about 1.5 thick; small oocyst residuum present, four sporocysts ovoid 22.4--29.4 (25.8) X 12.6--15.4 (14.1) with protuberant Stieda body; opposite end of sporocyst also often slighly pointed; large granular sporocyst residuum obscuring sporozoites. Gametocytes of E. arundeli sp. n. and of an organism which is consistent with E. tasmaniae, are described developing in the lamina propria of villi in the small intestine. The stages in the hairy-nosed wombat are those described as Ileocystis wombati Gilruth and Bull 1912. It is suggested that the identification of the host of Supperer's E. ursini and E. tasmaniae as V. ursinus was in error and that the allopatric L. latifrons is the natural host. Eimeria tasmaniae Supperer 1957 is suppressed and E. wombati (Gilruth and Bull, 1912) comb. nov. is proposed and redescribed. No schizonts were identified among the endogenous stages, consistent with observations in the literature on other coccidia with similar gametocyte and oocyst structure.

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