REVISION OF AUSTRALIAN JERBOA MICE. 
Genotype . . . P. longicaudatus Gould. 
Podanomalus longicaudatus (Gould). 
Hapalotis longicaudatus Gould, Pro. Zoo. Soc., 1844, p. 104. 
Hapalotis mitchdli Spencer (as of Ogilby), Report Horne Expdn., II, p. 10. 
Podanomalus longicaudatus Waite, Pro. Roy. Soc. Viet., X, p. 117, 1897, 
PI. V. 
Notomys longicaudatus Thomas, Ann. Mag. Nat. Hist. (9), VIII, p. 537. 
1921 ; Wood Jones, Rec. Sth. Aust. Mus., Ill, p. 2, 1925; id. 
Mamin. Sth. Aust., Ill, p. 338, 1925. 
Large, heavily-built. General colour tawny-olive, a little darker on mid- 
dorsal line. Individual hairs (14 mm.) slate for more than half length, then 
cinnamon with dark brown tips. Cheeks lighter, upper lip white. Ears long ; 
tips bluntly pointed ; almost naked. Ventral surface greyish-white, hairs 
basally slate with greyish-white tips. On male only, an oval gland with raised 
margin between forelegs. Tail brown above, white below for basal half ; then 
with gradually lengthening black hairs to tip ; several specimens have a few 
white hairs at extreme tip. Manus brown, a little lighter than body. Pes 
white, heavy (6 mm. at base of toes 2.3.4.). Hallucal pad present in all 
specimens. 
Skull. — Stout. Bullae large, almost or quite equal to diastema. 
Teeth . — Index of incisors 60°-65°. 
Habitat. Central Australia. 
Type (lectotype). — In British Museum. 
1 wenty-eight specimens examined ; North of Alice Springs, Barrow Creek, 
Central Australia. Nat. Mus. Nos. R 1381 7-21, R13216-24, C201, C266-268. 
I he largest of the Jerboa Mice; easily recognised by its 
size, or in young animals, by the length and heaviness of the 
pes. Specimens examined comprise seven taken on, or just 
after the Horne Expedition, and twenty-two taken at Barrow 
Creek on the Spencer-Gillen Expedition in 1901. 
Podanomalus aistoni, sp. nov. 
Pale, short-haired. General colour avellaneus, heavily grizzled with dark 
tipped hairs. Dorsal fur (11 mm.) slate for half its length, then pallid with 
dark tips. Sides of body lighter. Upper lip white. Ears long ; tips bluntly 
pointed ; very sparsely clothed with fine hairs, light brown on outer surface, 
silvery white on inner surface. Ventral surface and inner side of limbs white. 
Pur on chest and inner side of fore limbs white to base in some specimens; 
in others grey for basal half ; abdominal region in all specimens basally grey. 
Oval gland on chest, between the forelegs, of male only. Tail brown above, 
white below. Manus and pes white. Pes with well-formed hallucal pad on 
all specimens. 
Skull. — Comparatively shorter, and noticeably wider in the interorbital 
region, than the skull of any other of the Jerboa Mice. Bullae small (two-thirds 
of diastema). 
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