ON A NEW SPECIES OF MUS FROM PULAU ТАБАК, 
Bx J. LEWIS BONHOTE, m.a., F.1.s. 
dm recently received те identification from Mr. Н. C. Robinson 
e specimen of a small rat, collected on the island of Pulau 
J E. in the Straits of Melee It belongs apparently to an un- 
described species, and I propose for it the name Mus jarak, sp. nov. 
Size about that ofa ый Миз attus. General colour above dark 
ith 
ong 
bristles. The underparts are pure white, and the line of demarcation 
between the colour of the upper and underparts, although distinct, is 
not abrupt. The feet are dark and scantily clothed with dark brown 
hairs. The tail is unicolor, stout and rather shorter than the head 
and body, the whiskers are long and dark. 
The skull is that of a typical Mus. The rostrum is of moderate 
h and fairly stout, the nasal bones are long and taper posteriorly. 
The supraorbital ridges are strong and well marked, and the 
ridges can also be traced well back. The autorbital foramen is large 
qua its ion, п a mere slit below, 
the outer plate being thin and leaning slightly outwards. i- 
1 small and lie well up in the skull, the base occipital and 
palate are kenne and the incisive fo long and tapering slightly 
at their an zygomata do not extend laterally but have 
a downward ‘aiden ney, the бте point being at about two-thirds x 
the 
length fiori anterior root. The teeth are normal and call for 
pe omment. 
skroei (of type in pei —Head and body 180 mm., tail 
160 mm., hind-foot 32 mm 20 mm 
SKULL. a uini length 42 mm., basal length 35 mm., palatal 
length 19.5 mm., diastema 12 mm., length of incisive 
foramina 7.5 mm., length of nasals 16 mm., zygomatic 
breadth 19 mm., паса! breadth 6.5 mm., greatest 
breadth of brain ease 15 mm., length o molar series 
(alveoli) 7 num 
HABITAT. ааһа of Pulau Jarak, Straits of Malacca. 
Typr.—B.M., 5, 8-12-1.—Adult male, collected by Mr. H. С. 
Robinson on the 20th December, 1904. 
This specimen, which through the kindness of Mr. Robinson has 
been presented to the National oeni belongs apparently to the 
Mus malai groe M Fasciculi per nee 2344 vol. i, pp. 32, 
: ees with tl of th: in i 
кесе very 1 much s 
The aed of ps E and the small size of the auditory bulle 
form characters which enable it to be easily identified; the latter in 
particular forming a marked feature by which it may be distinguished 
-from Mus annandalei (loc. cit. om p. 30), which in colour and size 
. it somewhat closely resembles 
