16 
HORN EXPEDITION—MAMMALIA. 
The colouration agrees M'ith tliat of the variety leichardfi, but it will be seen 
on comparison with the measurements given by Mr. Thomas* that both the hind- 
foot and the ear are proportionately considerably longer than in the typical form. 
At the same time the ear, as in L. C 07 ispicinafus, is less than one-third the length 
of the hind-foot. 
Habitat. —The range of the variety is usually stated as North Australia, but 
it certaiidy occurs in the central districts, and, as Mr. Thomas says, “ is pi’obably 
spread over the whole of Central and North-western tropical Australia.” The 
southern limit of its range is not known, but it certainly occurs south of the tropics. 
INIessrs. Stirling and Zietz record L. hirsutiis, the Western Australian species, 
amongst the mammals of the Elder Expedition, and Mr. Streich informed them 
that it appeared to be numerous in the northern parts of the Victoria Desert. 
(5) Oayc/wgale htnata, Gould. The crescent wallaby. 
Two specimens, for which I am indebted to Mr. F. J. Gillen, were caught at 
Alice Springs. It has been recorded from Central Australia by Sanger,f and was 
captured in the Everard Ranges during the Elder Expedition. 
Sub-family Potoroinre.. 
(1) Bettongia lesueuri., Quoy and Gaimard. 
This is the common sand-hill rat-kangaroo of Central Australia, and is perhaps, 
judging by the number and size of the excavations which it makes, the most 
common form of marsupial amongst the sandy plains and sand-hills, where we often 
saw it during the daytime, dodging with wonderful speed and agility in and out 
amongst the bushes and tussocks of porcupine grass. 
This species seems to be especially a dry-country one. 
The native name is Mril-hl. 
Habitat. —We found it during the whole course of the expedition, and there 
can be no doubt but that it is distributed right across South, Central and West 
Australia. 
Family Piialangerid^. 
Sub-family Phalangerinre. 
(1) Trichosurns valpecula, var. typia/s, Kerr. The common phalanger. 
This common phalanger is very widely distributed, occurring eA^erywhere 
amongst the eucalypts which border the river-beds. 
* British Museum Cat., p. S2. 
t Am. Nat., vol. xviii., 1S84. 
