2a2 On Two new North-Bornean Mammals. 
Besides the type, a second specimen, in most respects 
precisely similar and also a male, was obtained by Mr. Everett 
at the same time and place. 
This handsome monkey seems only to be nearly allied to the 
species above referred to. Of these it differs from S. Hoset 
and S. Hverett? by its vertical frontal crest, its greyish crown 
surrounded by black instead of black surrounded by white, 
and its greyish nape and sides of neck, where there is none of 
the sharp contrast between black and white characteristic of 
those species ; the legs also above the ankles are grey instead 
of black. 
From 8S. Thomas?, which also has a crest, it is distinguished 
by its backwardly directed occipital hairs, its perfectly unicolor 
tail, its paler back, and by the lesser extension and purity of 
the white of the belly and inner surface of the limbs. 
In addition, as already noted, S. sabanus is distinguished 
from all its allies by the whitish or flesh-coloured tint of the 
upper half of its face. 
Mus Margaretie pusillus, subsp. n. 
Apparently similar in every way to the typical form, but 
very markedly smaller in all dimensions, as is shown by the 
following measurements of the type (an adult female in 
alcohol} :— 
Head and body 67 millim., tail 123; hind foot without 
claws 16°8; ear from notch 13°8. 
Skull: basal length 19:1, upper length 22°6; zygomatic 
breadth 12:2, breadth of brain-case 11; nasals, length 7-3; 
interorbital breadth 3-9; interparictal, length 3-2, breadth 6°5 ; 
anterior zygoma-root 2°5; palate, length 11°5; diastema 6:1 ; 
anterior palatine foramina 3°0; length of upper molar 
series 5°0. 
Hab. Mount Kina Balu, N. Borneo. Coll. A. Everett. 
This beautiful little mouse is evidently a local represen- 
tative of the very remarkable species | described as Mus 
Margarette, {rom the Penrisen Hills, Western Sarawak*, and 
as such deserves a subspecific name. ‘lhe specimen is 
distinctly older than the original type of the species, and is of 
the same sex, so that the difference in size is clearly due 
neither to age nor sex. 
A second specimen, identical in all respects with that now 
described, was sent home by Mr. Everett, but was not acquired 
for the Museum collection. 
* Ann. & Mag. Nat. Hist. (6) xi. p. 846 (1893), 
