I have named this fine and distinct Rock Wallaby in honor of 
the Hon. Walter Rothschild, by whom Mr. Tunney’s collecting expe- 
dition has been mainly supported, and whose scientific interest in the 
Macropodidcz is well known. 
P rothschildi is most nearly related to P. lateralis , but is readily 
distinguishable by its dark head and uniformly dark ears, the absence 
of either nuchal dark stripe or whitish flank patch, and by its shorter 
thinner fur. 
Oldfield Thomas (Nov. Zool. Vol. XI , pp. 335, 1904). 
PERAMELES BARROWENSIS, sp. nov. (Thos.)- 
A small insular representative of the continental P. obesula . Size 
markedly smaller than in P. obesula. General color, strongly lined 
black and buffy, the individual hairs grey, basally darkening to black, 
which latter may either continue to the tip or replaced by buffy ; 
woolly under fur, grey basally, whiter terminally. Head like back, or 
slightly darker ; upper lip whitish ; no darker markings round eyes. 
Ears short, rounded, closely covered with fine, buffy hairs. Under- 
surface dull whitish, not sharply defined, the hairs whitish to their 
roots. Arms externally like the body, darkening to brown on the 
metacarpals ; the digits white. Hind limbs similar, but the digits also 
brown. Tail of medium length, grizzled brown above, whitish below. 
Skull, although conspicuously smaller, agreeing in all details with that 
of P. obesula. 
Type. — Male, B.M., No. 1528 ; original number, 3290. — Col- 
lected 6th November, 1900, by Mr. J. T. Tunney. 
DESCRIPTION OE A NEW PHASCOGALE PROM 
NORTH WES TERN AUSTRALIA. 
By EDGAR R. WAITE , F.L.S., Zoologist to the Australian Museum. 
Records of Australian Museum, Vol. V., Pt. II., 1904. 
Type 5372 and 5373 W.A. Museum. 
PHASCOGALE BLYTHI (Waite)- 
In January, 1902, Mr. A. C. Blyth, of this city, invited me to see 
three small mammals which he had just brought alive from the 
Pilbarra District, North Western Australia. 
I found them to be an adult pair and a half-grown example of a 
species of Phascogale. Mr. Blyth told me that on passing through 
Western Australia he had also left two examples with the Director of 
the Western Australian Museum and Art Gallery. In April, Mr. 
