MACROPUS OCYDROMUS, Gould. 
West- Australian Great Kang-aroo. 
Heads or a Male and a Female, life-size. 
If the letterpress annexed to the sueeeeding Plate, containing reduced figures of this species, 
he referred to, sufficient reasons will be found for figuring life-sized heads of the two 
sexes of the West- Australian Kangaroo. On comparing Macropus major and M. Ocydromus, 
it wifi, be seen that a very considerable difference exists between the two animals — the deep 
vinous colouring of the entire body, deep brown hue of the nose, and the black mark at the 
base of the ears, which are peculiar to the latter, being very striking, and rendering it con- 
spicuously distinct from its near ally ; the opinion that they are really difierent species is 
moreover strengthened by the circumstance of the one being an inhabitant of the western, 
and the other of the eastern parts of the great continent of Australia; and from what we 
have seen in so many other instances of representative species, we might naturally expect 
this would be the case. 
For a more detailed account of the Macropus Ocydromus, the reader is referred to the 
pages given with the entire figures of the animal. 
