58 MACROPUS. 
17. Macropus ruFus, Desmarest, sp. (1822). 
Great Red Kangaroo. 
Size, very large; form robust, in the female rather slender. 
Fur of back and sides short, close, and woolly, composed almost 
entirely of under fur , the direction variable, especially on the 
head. Rhinarium naked. General color above brilliant rufous 
in the male, bluish slaty-gray in the female ; below white or pale 
gray with the fur coarse and straight. A black whisker-mark, 
with a whitish blotch below it. Ears gray or brown outside, 
whitish inside. Fingers and toes black ; central hind claw short. 
Tail gray. 
Dimensions.—Head and body about sixty-five inches; tail about 
forty-two inches. 
Habitat.—Eastern, South-eastern, and South Australia. 
References. —Thomas, B.M. Catal. p. 25, pls. v. fig. 3 (rhinarium) 
and vi. fig. 5 (third molar); Gould, Mamm. Austr. ii. pls. vi., vil. 
18. Macropus ISABELLINUS, Gould, sp. (1841). 
Isabelline Kangaroo. 
Size large ; fur of medium length, very soft and fine but not 
woolly. General color above rich foxy red ; underside and limbs 
white. Front of neck pure white, sharply defined from the rufous 
nape by a ridge of opposed hairs. Tail rufous gray. 
Dimensions.—About the same as those of M. rufus. 
Habitat.—North-western Australia, and Islands off the coast. 
References.—Thomas, B.M. Catal. p. 25. 
19. Macropus rosustus, Gould (1840). 
Wallaroo. 
Size large; form stout and heavy. Fur of medium length, 
rather thick and coarse. Rhinariumnaked. General color above 
dark smoky-brown; below lighter. Nasal region and back of 
ears nearly black ; lips, inside and base of ears white or pale gray. 
Arms, legs, and tail very dark brown, gradually becoming black 
distally. Central hind toe very short. 
Dimensions.—Head and body about sixty inches; tail about 
thirty-six inches. 
Habitat—Mountain Ranges of Queensland, New South Wales, 
Victoria, and South Australia. 
References.—Thomas, B.M. Catal. p. 22, pl. v. fig. 2(rhinariwm); 
Gould, Mamm. <ustr., ii. pls. x., xi. 
