9 
not markedly greyer, as it is in the female ; but the muzzle is incon- 
spicuously browner. The hairs of the ears are rufous, like those of the 
crown. In all, males and females, the fur of the nape and fore-back 
slopes evenly backwards, there being no trace of a whorl in the region 
of the withers. This is only the case in M. isabellinus. The skull of 
the male, like that of the female, closely agrees with that of the true 
M. robustus .. 
A second set of four, two males and two females, obtained like 
the previous ones through the kind agency of Mr. Woodward, are from 
the Grant Range, in the Kimberley District, North-West Australia. 
These specimens, which could not be distinguished from M. isabellinus 
until proper material of the latter form was available, I now think to 
represent another distinct sub-species of the robustus group, and I 
have ventured to name it in honor of Mr. Woodward, to whose assist- 
ance the British Museum owes the whole of the material referred to 
in the present paper. 
MACROPUS ROBUSTUS WOODWARDI, sp nov- 
Fur shorter, thinner and harsher than in cervinus. Fur of nape 
and fore-back more or less reversed forwards from a dividing whorl 
situated on the withers. 
Male. — Bright rufous, nearly matching that of M. isabellinus above 
throughout, the head, ears and back being all of this color, as are also 
the middle line of the tail proximally, and the outer side of the limbs, 
Digits indistinctly blackish. Remainder of limbs and tail and under 
side of body dull whitish. 
Female. — In general color more or less fawn ; otherwise similar 
to male. One of the two species is of a pale sandy fawn, the other a 
deep fawn like the female of cervinus ; the former appears to be in 
summer, and the latter in Autumn or Winter pelage. 
Habitat . — Grant Range, S.W. part of Kimberley District, North- 
Western Australia. 
Type. — Old male, B.M. No. 0611 ; Co-Type . — No. 085 — W.A.M. 
Collected by J. T. Tunney. 
The whole of these red forms of the Macropus robustus group were 
unknown when the catalogue of Marsupials was published, so that the 
imperfect type skin of M. isabellinus was not unnaturally considered to 
be related to M. rufus , but there is now no doubt that it is a stunted 
insular form of the same group. To Mr. Woodward alone is due the 
credit of this very considerable increase in our knowledge of the 
Western Macropodidcz ; the verification of the occurrence of M. rufus 
in Western Australia, the discovery of both M. robustus cervinus and 
