u 
HORN EXPEDITION—MAMMALIA. 
(2) Macropus robustus^ Gould. The Euro. 
This is the “ AValhiroo ” of Queensland and the inland parts of New South 
Wales and the “Euro” of South Australia, specimens from which were formerly 
dcsci'ibed as belonging to a distinct species (d/. erubescens). In the British 
IMuseum Catalogue Mr. Thomas says:—“I cannot distinguish specitically the 
kangaroo described as M. erubescens^ which seems to be merely a more rufous form 
of the present species. As to colour, every intermediate gradation appears to 
occur, and the skulls of the two forms are quite identical. In a general way 
South Australian specimens belonging to erubescensP and New South Wales ones 
to “ robustus,” but specimens agreeing with both are often found in one and the 
same place.” 
So far as colouration is concerned the Euros of Central Australia are strongly 
suh'used with rufous, and the blacker forms characteristic of the animal known 
locally in Queensland and New South Wales as the “Wallaroo” do not occur. 
The intermingling of the two colour vaiieties referred to by Mr. Thomas must 
take place somewhere to the east of the central district, the mountain ranges of 
which are separated by considerable tracts of plain and desert country from tlie 
ranges of the eastern parts in which the wallaroo is found. 
This species is exclusively contined to the rocky hills, and is apparently never 
met with in the plain country inhabited by Macropus rufus. 
The native name is Cunula. 
Habitat. —Its range is very wide, extending right across the continent from 
the head of Spencer Gulf to the “far north.” On the eastern side of the central 
area it is found in the inland parts of New South Wales and Queensland. Its 
western limit is not known, but it certainly extends as far as the western end of 
the McDonnell Banges, and probably will be found in all the hill ranges of 
Central and also inland West Australia. 
There is thus in the Ereniian region one species of Macropus characteristic of 
the plain country and another of the hills. Both of them are also characteristic 
forms of the border-land between tlie former and the Euronotian region into 
which they do not extend. 
(3) Petrogale lateralis., Gould. The West Australian rock-wallaby. 
This is the common I’ock-wallaby of the central districts, living among the 
rocks along with the Euro {Macropus robustus). 
