156 
MACROPODIDiE. 
The present species much resembles the H. Thetidis , but 
may he distinguished by the broad dusky mark on the back 
of the neck, and the red colour of its legs and feet; the fore 
legs in Thetidis being grey and the feet uniform brown: the 
prevailing tint of the upper parts of the body is moreover grey, 
very distinctly pencilled with black and white, whilst in 
Thetidis it is brownish ; the fur is usually longer, and that 
on the under parts of the body is never of so pure a white, 
exhibiting a slight greyish tint, and being generally more or 
less suffused with pale rust colour: the hairs on these parts 
are more distinctly tinted with grey next the skin; the hinder 
part of the back near the root of the tail is generally of a 
rufous tint, and so is the base of the tail, but in the H. 
Thetidis these parts are of the same brown tint as the body. 
The hairs on the back in H. Derhiamts are grey at the root, 
shaded then into a blackish hue, which is followed by rust 
colour, white, and black. The upper lip is whitish, and there 
is a pale (nearly white) mark on the cheeks. The ears are 
blackish externally, and the hairs on the inner side are white, 
or nearly so. 
Inches. Lines. 
Length from tip of nose to root of tail. 22 0 
“ of tail .17 0 
44 from nose to ear ... ... ... 3 104 
41 of ear ... . 2 0 
41 of tarsus . ... ... ... 6 0 
Upon a little Kangaroo found in the small islands, called 
Houtman's Abrollios, situated on the west const of Australia, 
north of the Swan River district, is founded the 
Halmaturus Houtmanni. Gould. 
Brownish grey, pencilled with black and white; sides of body and 
outer side of hind legs suffused with rust colour; back of 
neck, shoulders, and fore legs, of a bright rust colour; under 
