330 MamMAtiA OF INDIA. 
Size.—Head and body, about six inches ; tail, 7# inches. 
According to Blyth the Nepal specimens are darker than those from 
Burmah, which he says “differs only from the Nepalese animal of 
Mr. Hodgson by having the upper parts entirely of a bright cinnamon 
colour.” 
No. 345. Mus CONCOLOR. 
The Common Thatch Rat of Pegi. 
Hapirat.—Upper and Lower Burmah, Malayan peninsula. 
DescripTIoN.—I have been unable to trace any accurate description 
of this rat, which Blyth says ‘‘conducts from the long-tailed arboreal 
rats to the ordinary house mice.” In his ‘ Catalogue of the Mammals of 
Burmah,’ published in the ‘ Jour. Asiatic Soc. Beng.’ for 1875, he remarks ~ 
that “it requires to be critically examined in the fresh state.” In the 
‘jy. A. S. B.,’ vol. xxviii. p. 295, he describes a young one as dark 
greyish mouse colour ; but this is not reliable, as the young rats and mice 
change colour as they attain full growth.* 
No. 346. Mus PALMARUM. 
The Nicobar Tree Rat. 
HapitTat.—wNicobar Islands. 
No. 347. Mus CEYLONUS. 
Hapitat.—Ceylon. 
DESCRIPTION.—Fur soft, lead colour; hair of upper parts tipped with 
dark fawn and black; ears large, naked ; whiskers long, black; tail 
longer than the head and body, scaly. 
SizE.—Head and body, 4% inches ; tail, 6 inches. 
‘‘' This small rat is found in out-houses in the cinnamon gardens at 
Colombo. I have no reason to think it to be the young of the former 
species (JZ. decumanus) ; the teeth were well developed; the darker 
colour and long tail will easily distinguish the species from other 
Colombo rats” (Kel/aart). The character of the molar teeth is all that 
can be depended on in the foregoing description, and this may require 
further investigation. ‘The young of rats and mice are always darker 
than the adults, and the tail is longer in proportion. 
* Since writing the above, Dr. Anderson has kindly allowed me to examine the 
specimens of AZus concolor in the museum, and in the adult state they are con- 
siderably more rufescent. In one specimen, allowing for the effects of the spirit, the 
fur was a bright rufescent brown; but, whatever be the tint of the prevailing colour, 
it pervades the whole body, being but slightly paler on the under-parts. Size, about 
4 inches ; tail, about 44 inches.—R. A. S. 
