1889. ] MAMMALS OF KINA BALU. 233 
Skull: tip of nasals to lambda 51; nasals, length 21°8, breadth 
6°5 ; interorbital breadth 8°8; infraorbital foramen, length of 
outer wall 7; palate, length 32; diastema 16-7; anterior palatine 
foramen 8'4; combined breadth of upper incisors 4:6; length of 
upper molar series 10-7. 
This fine Rat has a certain similarity to the Indian Bandicoot Rats 
(Nesokia), resembling them both in general external appearance 
and in the stout and heavy build of the skull and teeth. No species 
hitherto described can be mistaken for it, as all the Oriental Rats 
which have external or cranial proportions at all similar are distin- 
guished either by having elongated rump-bristles or parti-coloured 
white-tipped tails. 
The single specimen obtained was found lying dead in the forest. 
14, Mus rattus, L. 
a, b. 8000 feet. 4 and 5/2/88. 
ce, d. 3000 feet. 1/4/88. 
The two specimens from an altitude of 8000 feet have their fur 
long and soft, while in those from 3000 it is short and harsh, so 
that it seems difficult to believe that both the forms can be referable 
to the same species. 
15. Mus sapanus’, Thos. Ann. Mag. N. H. (5) xx. p. 269 
(1887). 
a. 1000 feet. 3/87. Type. 
b. (2) juv. 3000 feet. 21/3/88. 
Fur short and fine, mixed with slender spines along the centre of 
the back. General colour rufous, mixed with brown along the top 
of the head and back, brighter and clearer on the cheeks and sides, 
the general tone very similar to that of M. jerdont. Whole of 
underside pure creamy white, sharply defined from the rufous of the 
sides. Outsides of limbs like sides, but rather greyer, inner sides 
white ; lower leg and ankles greyish brown all round. Hands and 
feet brown along the middle of their upper surfaces, their edges 
white, the contrast especially strongly marked on the feet, where a 
broad band of deep blackish brown passes along the centre, edged on 
each side with pure white. Sole-pads large, smooth, and prominent, 
the last one about three times as long as broad. Fifth hind toe, 
without claw, reaching to the end of the first phalanx of the fourth. 
Ears rounded, rather short, laid forward they barely reach to the 
posterior canthus of the eyes. Tail enormously long, evenly finely 
haired, the scales, which are large, averaging from seven to nine to 
the centimetre, uniformly dark brown above and below throughout, 
but the hairs black for the proximal two thirds above only, elsewhere 
pure white. Mammz 2-2=8. 
Dimensions of the type, an adult male, preserved as a skin :— 
Head and body 280 millim. ; tail340; hind foot 43°5 ; ear, above 
1 From Saba, the district of North Borneo in which Mount Kina Balu is 
situated. 
