The next genus of this family, _Dasyurus_, comprises five species, which range over the whole of the Papuan and Australian sub-regions. The general form is Viverrine, and the hallux is sometimes present though small. The dental formula is as in the last genus, but the teeth "are more insectivorous in their character." There are six or eight mammae. The members of this genus are grey or brown, and spotted with white; they are all arboreal, and feed largely upon birds and their eggs. Mr. Thomas has pointed out that in two species, _D. viverrinus_ and _D. geoffroyi_, the striae upon the foot-pads are absent, and that therefore these at least are probably not so purely arboreal as the rest. The animals are not diurnal, and during the day hide themselves in the hollow trunks of trees. They are spoken of as "Native Cats," but have the general habits of Martens. _D. maculatus_ is common in Tasmania, but is rare in Australia, thus "approaching the condition now exhibited by the Thylacine and {153} Tasmanian Devil, namely, complete extermination in Australia, where both once lived." _D. hallucatus_ shows an approach to _Phascologale_ in its five-toed hind-feet and slender build. _Phascologale_ is a genus which, like the last, is usually arboreal (although not _P. virginiae_ of North Queensland), but is of much smaller size, the species not exceeding the dimensions of a rat. They have no spots, but there is sometimes a stripe down the back. There are thirteen species, which have the same range as the last genus. The hallux is present though small, but the pouch is "practically obsolete," though there is a small fold of skin behind the teats. The rhinarium is naked; the tail is long, "bushy, crested, or nearly naked." The mammae are four to ten in number. The dental formula is as in _Dasyurus_, and the teeth are not very different in form; sometimes the last premolar is wanting. "The members of this genus," remarks Mr. Thomas, "evidently take the place in the Australian region filled in the Oriental by the Tupaiae, and in the Neotropical by the smaller Opossums." The genus _Sminthopsis_ comprises not more than four species, even smaller than the last. The largest species, _S. virginiae_, is only 125 mm. in length. The hallux is present, and there is a well-developed pouch. There are forty-six teeth, as in the Dasyures. The feet are narrow with granulated or hairy soles, whereas in _Phascologale_ they are broad with smooth soles. The mammae are eight or ten. The genus ranges through Australia and Tasmania. The genus _Antechinomys_ has but a single species, which is a native of Queensland and New South Wales. The build is Jerboa-like, and the animal is, as might be inferred, terrestrial. The ears are very long, and the limbs elongated; the hallux is absent; the teeth are exactly as in _Sminthopsis_.