15] 
Lieut. Kelsall at Kota Glanggi in 1891 and now in the Raffles 
Museum, Singapore. It was identified by Mr. Thomas as R&. 
laticaudatus, M. & S., but now that R. laticaudatus is known to be 
confined to Borneo, it must be recorded as an example of R. tupatoides, 
Blyth, as the tail hairs are distinctly washed with whitish.) 
17, MUS VOCIFERANS, Mixer. 
Mus vociferans, Miller, Proc. Biol. Soc. Wash., vol. XIII, 1900, 
p. 138. 
1 Q. Lipis. 
2¢;12. Bentong. 
18, MUS SURIFER, MILLER. 
Mus surifer, Miller, Proc. Biol. Soc. Washington, vol. XITI, 1900, 
p. 148. 
4 9. Bentong. 
19. MUS PELLAX, MILLER. 
Mus pellaz, Miller, Proc. Biol. Soc. Washington, vol. XIII, 1900, 
p. 147. 
1$6;2 2. Bentong. 
This species has not hitherto been obtained from the eastern side 
of the Peninsula. 
20, MUS CREMORIVENTER, MItter. 
Mus cremoriventer, Miller, Proc. Biol. Soc. Wash., vol. XIII, 
1900, p. 114; Bonhote, p. 10. 
1 g. Lipis. 
This, at present, is the most southerly record for the east side 
of the Peninsula. 
21, MUS ASPER, MILLER. 
Mus asper, Miller, Proc. Biol. Soc. Washington, xii, 1900, p, 145. 
1 g. Lipis. 
4$;3 9. Bentong. 
The series serves to show the variability of Mus asper. It ranges 
from typical bright-coloured animals with rusty bellies to duller-backed 
individuals with grey under parts. Rats from Eastern Sumatra, with 
the latter characters and size a trifle greater than the typical MW. 
asper, have been separated by Dr. M. W. Lyon (Proc. U. S. Nat. Mus., 
vol. XXXIV, 1908, p. 644) under the name of Mus mandus. But 
duller colour and greater size are by no means always associated in the 
Peninsular animals, and it does not appear at present desirable to 
recognise more than the one species in our area. 
22, MUS VALIDUS, Micurr. 
Mus validus, Miller, Proc. Biol. Soc. Wash., xiii, 1900, p. 141; 
Bonhote, P.Z.S., 1906, vol. I, p. 10. 
2. Lipis. 
Immature individuals are much darker above than adults and 
have grey under parts only slightly washed with buff. 
Feb., 1911, 
