64 MR. C. BODEN KLOSS ON 
amina narrow and elongate with their greatest breadth in front of 
their mid-length, pointed posteriorly and terminating (as in Mus) 
within the line joining the anterior roots of the molars which are 
nearly vertical in front: tooth rows parallel. Mesopterygoid space 
falling short of the last molars by nearly a millimetre and apparent- 
ly very narrow (but base of braincase and the bullz missing). 
Measurements: Head and body, 89; tail, 85; hindfoot, 19; 
ear, 14.5 mm. 
Skull :— palatilar length, 11.0; diastema, 6.7; upper molar row 
(alveoli), 4.0; length of palatal foramina, 4.6 ; nasals, 8.1 x 2.5; zygom- 
atic breadth, 11.9 mm. 
Remarks. This second example of Vautatus thai is older and 
larger than the type and more ochraeous above. Its advent shows that 
in respect of the incisors the genus does not differ from Vus, as stated, 
since distinct notches are present. It is otherwise distinguished as 
recorded (t.c. s., p. 279) while, further, in Mus the posterior branches 
of the preemaxillaries are continued beyond the ends of the nasals. 
24. Nyctocleptes sumatrensis cinereus (MCCLELLAND). 
Nyctocleptes cinereus, Kloss, Journ. N. H. 8, Siam, II, p. 314 (1917). 
1 ¢ skin and skull, Chiengmai, N. Siam [ No. 2683/CBK. }. 
Obtained by Mr. W. J. F’. Williamson’s collector. 
1 @ skull, Sikawtur, N. W. of Raheng, W. Siam, 1,500 ft. 
[No. 2654/CBK.!. Collected by Mr. K.G. Gairdner. Orig. No. 464. 
General colour of body and limbs pale dull buff, many of the 
hairs, especially on the back, with a dark brown subterminal annulation 
and a pale shining tip. Fore and hind feet dull brown. Top of head 
with a broad blackish brown stripe disappearing on the nape ; throat 
buffy, foreneck dull brown ; rest of head ferruginous or ochraceous. 
Tail naked. — 
In colour this race seems much more nearly to resemble the 
young of N. s. swmatrensis of the south of the Malay Peninsula than 
it does adults of that form which become a dirty buff with a dark mark 
on the crown. 
Collector’s external measurements of the Chiengmai specimen:— 
Head and body, 395 ; tail 130 ; hind foot 64 mm. 
JOURN. NAT. HIST. 80C, SIAM. 
