SPECIES OF MAMMALS OF THE PACIFIC AREA 33 



New Guinea (T. browni and others) are colored dark choco- 

 late-brown. Examples are red-necked, red-legged, red-bellied, 

 dama, and white-throated pademelons, of which the dama alone 

 is relatively uniform in color. The red-legged pademelon has 

 recently been found in the extreme south of New Guinea. 



A distinctive species, the Short-tailed pademelon or Quokka 

 (Setonicv), occurs in Western Australia. It is a little smaller 

 than most ; the size from nose to tip of tail is thirty-three inches, 

 of which the tail includes ten inches. 



The Gazelle-faced Wallabies (Dorcopsis), a group found 

 only in New Guinea, are superficially like the dark brown 

 pademelons. They can be distinguished by their nearly naked 

 ears and particularly by the hairs of the back of the neck which 

 are arranged so that they lie forward from a hair-whorl just 

 behind the shoulders, whereas in Thylogale browni the hairs 

 begin at the back of the head and lie smoothl}^ and continuously 

 down the neck and back. Dorcopsis is also distinguished by the 

 greatly lengthened premolar teeth. D. brunii, the commonest 

 of these wallabies, is a lowland species inhabiting forested areas 

 of southern New Guinea. A second species (Z). hageni), with a 

 thin white line down the back, is found on the northern side of 

 New Guinea, and a tiny third species {D. macleayi) with long 

 lax hair is known only from the high mountains of that island 

 above ten thousand feet. 



The Rock Wallabies (Petrogale and Per adore as) are small 

 animals about the size of the pademelons. The tail is long and 

 of more uniform thickness than in the wallabies thus far de- 

 scribed. It is less seldom used as a third hind leg to prop 

 up the animals' bodies. At least five types of rock wallabies 

 are known, most with white shoulder and hip-stripes, and one 

 with the tail distinctly ringed with dark brown {Petrogale 

 xanthopus) . 



The Nail- tailed Wallaby (Onychogale) is a distinct group 

 of three species, all of which have a horny projection at the 

 tip of the tail. 



