Derby’s kangaroo. 
Ib7 
parts grey-white, slightly tinted with yellowish on the chest: 
a black stripe runs from near the occiput along the hack ot 
the neck: the hairs of the hands freckled with black and 
rusty white; tarsi of a very pale rusty brown, freckled in 
front with black; the toes suffused with black: tail black 
above, freckled with whitish towards the base, and almost 
entirely black near and at the apex; beneath dirty white: 
head greyish; cheek-mark moderately distinct; cars grey 
at the base externally, but dusky beyond. Weight of the 
male about 11 lbs.; of the female about 8 lbs. 
In the female the rusty tint on the neck and other parts is 
less distinct. 
Male. Female. 
Inches. Lines. Inches. Lines. 
Length from tip of nose to root of 
tail . 
2G 
0 
24 
0 
tl 
of tail .. ^ . 
13 
0 
12 
G 
it 
of tarsns and nails. 
5 
5 
5 
5 
II 
of the great central toe nail... 
0 
9 
0 
10 
(1 
from nose to ear . 
3 
10 
3 
8 
II 
of car . 
1 
9 
1 
9 
II 
of fore-arm . 
4 
0 
3 
6 
II 
of hand and nails ... 
1 
10 
1 
8 
• 1 
(of which the nail of central 
finger is . 
0 
7 
0 
6 ) 
II 
of the three upper incisors ... 
0 
4$ 
0 
5 
The specimens above described originally belonged to Mr. 
Gould, and are now in the British Museum; other specimens 
from the same locality have received from Mr. Gray the 
specific name of Etnclia , in die List of Mammalia in the 
Collection of the British Museum, p. 90. I con discover no 
difference between these several specimens and the M. Der~ 
lian us, excepting that generally their colour is somewhat less 
bright, having but little of die Teddisli hue, but this is by no 
means a constant difference. Numerous skulls contained in 
Mr. Gould’s collection I have compared with the skull of a 
