Mammals from Northern Luzon. 163 
less hairy ears. Fur of medium length and texture ; general 
colour coarsely grizzled fulvous brown, the longer hairs 
black, the shorter Ones with orange or rufous tips. Face 
greyer. Ears of medium length, only thinly haired as 
in ordinary Jfus. Under surface dull slaty buff, not 
sharply defined; a whitish mesial line sometimes present. 
Metapodials brown mesially, silvery white laterally ; hands 
apparently unusually elongated ; feet rather short, with large 
sole-pads. Tail thickly and uniformly clothed (except for its 
basal half-inch) with dark brown, almost black, hairs some 
7 to 9 millim. in length, the scales quite hidden. 
Skull long, rounded, the supraorbital edges not ridged ; 
zygomatic plate slightly concave anteriorly ; bulla small; 
third upper molar as long as second. 
Dimensions of type (3) :— 
Head and body 204 millim.; tail (doubtfully perfect *) 121; 
hind foot (moistened) 35:5. 
Skull: basal length 40°5; interorbital breadth 5:4; palatal 
foramina 8*1 ; upper molar series 7°6. 
Mus luzonicus, sp. 0. 
Closely allied to, and of the same size and dorsal colour as, 
M. Everett’, Giinth., which also occurs in the Luzon collec- 
tion. Fur much longer and softer. Tail shorter. Belly 
dull slaty buff; the hairs slate for their basal four fifths, buff 
at their tips. 
Skull with less ridged supraorbital edges, smaller bulle, 
broader molars, and shorter palatal foramina, which do not 
reach back to the level of the front of ™?. 
Measurements of type (2 ):— 
Head and body 240 millim.; tail imperfect (of another 
specimen 200) ; hind foot (moistened) 47. 
Skull: basal length 44; length of upper molar series 9°3 ; 
breadth of ™-! 32. 
The collection also contains specimens apparently refer- 
able to Mus chrysocomus, Hoftm., M. neglectus, Jent., and 
M. ephippium, Jent. 
CRATEROMYS, gen. nov. 
General external appearance as Phlaomys, but claws 
smaller and tail bushier. 
Skull with a narrow interorbital region, the frontal and 
* An immature specimen, 165 millim. long, has a tail 117 millim, in 
length. 
LE* 
