676 
VERTEBRATA. 
THE WOMBAT. 
Derby's Kangaroo, M. Derhianus^ inhabits Western and Southwestern Australia, and is about 
the size of the last. 
The Red-bellied Kangaroo, M. Billardierii, is a native of Van Diemen's Land. Tt is a gre- 
garious species, hundreds of them inhabiting the same locality. It is called by the colonists the 
Wallahy. 
The Short-tailed Kangaroo, M. hrachyurus, inhabits the region of King George's Sound, 
The Brush-tailed Rock-Kangaroo, M. penicillatus, inhabits New South Wales, and its flesh 
is said to be most excellent, Tt is a gregarious and nocturnal species, dwelling in rocky districts, 
and remarkable for its power of leaping from rock to rock. 
The Black-flanked Rock-Kangaroo, M, lateralis, inhabits Western Australia, tlie Swan 
River district, and is nocturnal in its habits, and remarkably shy. 
Tlie M. inornatus inhabits the north coast of Australia. 
The Short-eared Rock-Kangaroo, M. Brachiofis, inhabits the northwest coast of Australia. 
The M. concinnus is also found in the same districts. 
Le Brun's Kangaroo, M. Brunii, was the first of the Marsupiata with which naturalists be- 
came acquainted, having been described by Le Brun as early as It is an inhabitant of' 
Xew Guinea. 
Genus VOTOROO : Hypsiprymnus. — This includes the Potoroo or Kangaroo Rat, H.muri- 
nus, which is a mild, timid creature, of the size of a rabbit; the body is formed somewhat like 
that of a rat, but the fore-legs are exceedingly short and the hind ones long, so that the animals 
move by long leaps on the latter, like the kangaroos. They burrow in the ground and feed on 
vegetables. 
Other species, to some of which Gray gives the name of Bettongia, are the II. 7nelanotiSj H. 
cuniculus, H. Grayi, H. Oaimardii, H. penicillatus.^ H. Gilbertii, H. vlatyops. All the species 
are of Australia. 
Genus HALMATURUS : Halmaturus. — These resemble the kangaroos, but differ from them 
