454 Mr. 0. Thomas on the 



tufted. Fur short and harsh, almost or quite spineless. 

 Colour above dark grizzled black and rufous ; belly dirty 

 grey, varying to brown, especially on the middle line of the 

 chest. Hands and feet whitish, but their metapodials often 

 dark brown along the centre; sometimes wholly brown. 

 Mammae 2—3=10 (rarely 3—3 = 12). 



Banjer-massing, S. Borneo (S. Muller) ; Mount Kina 

 Balu, about 3000 feet ( Whitehead, Everett) ; Labuan ( Eve- 

 rett) ; Mantanani Island (Everett) ; Baram (Hose) j Simang- 

 gang, Batam Lupar, Sarawak (Everett); Balabac (Everett). 



[In spite of the apparent differences involved in the wording 

 of the above diagnosis, these specimens are all fairly uniform 

 in appearance, and are readily distinguishable from every 

 species hitherto referred to except M. Muelleri, to which they 

 have a certain superficial resemblance. Their smaller size 

 and possession of three inguinal pairs of mammas will, how- 

 ever, always separate them from that animal. 



But within the group there is a second Bornean form which 

 I now think it necessary to describe, namely the represen- 

 tative of M. neglectus from the heights of Kina Balu.] 



13. Mus baluensis, sp. n. 



Very similar to M. neglectus in size, proportions, and colour, 

 but the fur quite long and soft, and the belly of a uniform 

 dirty buffy hue. 



Mount Kina Balu, 8000 feet (Whitehead), 7000-10,000 

 feet (Everett). 



Detailed Diagnoses of the New Species. 



Mus rajah. 



Size medium, but the feet proportionately long. Fur 

 thickly intermixed with spines. No longer bristle-hairs. 

 Colour a dull rufous clay-colour, darker along the back, where 

 the spines are tipped with brown, paler on the sides, where 

 they are white throughout. Belly white, the hairs white to 

 their roots ; line of demarcation on sides fairly well defined. 

 Centre of belly in old specimens with a large discoloured 

 patch, apparently due to some glandular exudation. Ears 

 medium, rounded, naked ; laid forwards in a spirit-specimen 

 they reach about to the middle of the eye. Upper surface of 

 hands* and feet white ; the digits almost naked ; soles grey, 

 smooth, with the usual six prominent pads ; fifth hind toe 

 reaching barely to the base of the fourth. Tail about the 



