REVISION OF AUSTRALIAN JERBOA MICE. 
hair. Ventral surface and inner side of limbs grevish-white ; basally grey with 
the distal half white. Tail brown above, white below to tip. Manus and pes 
silvery white. Pes comparatively stout (4 mm. at base of toes 2.3.4.). Four 
pads ; hallucal pad much more clearly defined in some specimens than in 
others, but in all at least an indication is present. 
Skull. — Large ; muzzle comparatively heavy, generally with open palatal 
foramina. Bullae medium (ant. -post, length three-fourths of diastema). 
Teeth. — Index of incisors 53 60°. 
Habitat. — Southern portion of the Australian Continent. 
Type. — In Australian Museum, Sydney. 
Thirty-seven specimens examined ; Murray River, Viet. ; Ooldea, S.A. ; 
Balladonia, Bencubbin, Gibson, L. King, W.A. Nat. Mus. Nos. R1767, CIO-35. 
The series examined consists principally of specimens 
collected by Blandowski on the River Murray in 1857 ; in all 
of these the occipital region of the skulls, including the bullae, 
has been cut away. A small series of recent specimens practi- 
cally identical with the above was loaned for examination, with 
others, by the Western Australian Museum. Mr. E. Le G. 
Troughton kindly compared two Blandowski specimens with 
Mitchell’s original material from near the junction of the Murray 
and Murrumbidgee Rivers described by Ogilby in 1841 and 
preserved in the Australian Museum, Sydney ; he considers 
that they are quite typical. 
Notomys mitchelli macropus Thomas. 
Notomys mitchelli macropus, Thomas, Ann. Mag. Nat. Hist. (9), VIII, 
p. 540, 1921 ; Wood Jones, Mamm. Sth. Aust., HI, p. 341, 1925. 
A long haired, pale race, with foot slightly longer and stouter than in 
typical mitchelli. General colour between avellaneous and wood-brown, but 
darkened on mid-dorsal surface by a heavy grizzling of dark tipped hairs. 
Dorsal fur (18 mm.) slate for two-thirds of length, then pallid with dark tips. 
Sides of body lighter, upper lip white. Ear long ; more truly oval than in 
typical mitchelli; hair on outer surface same colour as on body. Gular 
glandular area as in mitchelli. Ventral surface white, hairs basally grey for a 
little less than half length. Tail greyish-brown above, white below. Manus 
and pes white. Pes stout (5 mm. at base of toes 2.3.4.). Hallucal pad present. 
Habitat.— South-eastern South Australia and Victoria. 
Type. — In British Museum. 
One specimen only examined, taken in 1914 in the northern Mallee, 
Victoria. The skull is crushed, and, unfortunately, cannot be removed from 
the skin. Nat. Mus. No. R5938. 
Notomys mitchelli alutacea subsp. nov. 
A long-haired, reddish form, in which basal part of dorsal hair (17 mm.) is 
tinged with a vinaceous hue, being faded brown rather than grey. Subterminal 
band cinnamon, tipped with Prout’s brown. Sides of body, crown, and cheeks 
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