Pseudomys fuscus (Thomas, 1882) . Ann. Mag. Nat. Hist., ser. 5, 9:413.

TYPE LOCALITY: Australia, Tasmania .

DISTRIBUTION: Australia; modern records from E New South Wales, S Victoria, and Tasmania, but Late Pleistocene-Holocene fragments indicated range once included Kangaroo Island, Carrieton, and Naracoorte in South Australia (Archer et al., 1984; Pledge, 1990).

SYNONYMS: brazenori, mordicus, wombeyensis .

COMMENTS: The form fuscus and the other taxa listed above were all described and revised under Mastacomys (Ride, 1956; Wakefield, 1972b), and this genus has always been recognized as part of the Australian fauna (Watts and Aslin, 1981; Mahoney and Richardson, 1988). However, chromosomal morphology (Baverstock et al., 1977c), Gbanding homologies (Baverstock et al., 1983b), electrophoretic data (Baverstock et al., 1981), and phallic morphology (Lidicker and Brylski, 1987) linked fuscus with some species of Pseudomys, and Watts et al. (1992) united fuscus with Pseudomys . Sperm head structure reported by Breed (1984), and variation in external morphology of glans penis documented by Morrissey and Breed (1982). Taxonomic, distributional, and biological references cataloged by Mahoney and Richardson (1988:160).