vil POUCHED JERBOA 15 3 
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 Dasyuwrus, 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, 1s 
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-lke, 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 Siminthopsis. 
Antechinomys has thirteen dorsal and seven lumbar verte- 
brae; three sacrals and twenty-five caudals, the latter number 
being in excess of that of its allies. The stomach is nearly 
globular, with approximated orifices; the intestine measured 
6°8 inches, a little more than twice the length of the animal 
itself. A. Janigera is a native of East Central Australia, and 
appears to be entirely terrestrial in habit, and to progress by a 
series of leaps—at any rate when going at full speed. 
Professor Spencer, who found examples of this rare species, gives 
