50 PETROGALE. 
Habitat,—West Australia. 
References.—Thomas, B. M. Catal. p. 68, pls. ix. fig. 8 (upper 
Jront teeth), x. fig. 15 (fourth premolar ), xii. fig. 3 (upper view of 
skull); Gould, Mamm. Austr. il. pls. xli., xlii. 
5, PETROGALE PENICILLATA, Gray, sp. (1827). 
Brush-tailed Rock-Wallaby. 
Size large; form stout and heavy. Fur long, thick, and coarse- 
General color above dull brown, more rufous on the rump; below, 
chin and chest pale gray, belly brown tinged with yellow ; anal 
region rich yellowish-rufous. Whisker-mark and cheek-stripe ill- 
defined, Occipital streak black, not extending on to neck. Lars 
short, their insides and posterior margins yellow; remainder gray 
at base, black terminally. A black mark behind the shoulder, 
succeeded by a pale gray one, both often inconspicuous. Arms 
and legs brown or rufous-brown; fingers and toes black. Tail 
long, more or less bushy, the basal three or four inches rufous, 
the rest black, the extreme tip sometimes yellow. 
Dimensions.—Head and body about twenty-nine inches ; tail 
about twenty-three inches. 
Habitat.—Coastal Districts of Queensland, New South Wales, 
and Victoria. 
References.—Thomas, B. M. Catal. p. 66, pls. ix. fig. 7 (upper 
front teeth), x. fig. 14 (fourth premolar); Gould, Mamm. Austr. 
Ips; XRIX. exd 
6. PerroGaLE xanruopus, Gray (1854). 
Yellow-footed Rock-Wallaby. 
Size large. Fur long, soft, and silky. General color above 
gray, below white. White cheek stripe well defined; a rich 
orange spot above each eye. Hars long, uniform yellow behind. 
A well defined black streak from the occiput to the middle of the 
back. <A triangular brown blotch behind the elbow, succeeded 
by a white stripe running down to the hip; top of knee brown, 
with a white patch outside it. Limbs uniform rich yellow; tips 
of fingers and toes brown. ‘Tail above and on the sides with 
alternate rings of dark brown and pale yellow, the brown gradu- 
ally coalescing above posteriorly to form a blackish crest ; below 
uniform yellowish- or brownish-white ; extreme tip sometimes 
yellow. 
Dimensions.—Head and body about thirty-two inches ; tail 
about twenty-four inches. 
Habitat.—South Australia. 
References.—Thomas, B.M. Catal. p. 64, pl. xii. fig. 1 (upper 
view of skull); Gould, Mamm. Austr. ii. pls. xliii., xliv. 
DD 
