some new LHast-Indian Muride. 245 
Supraorbital ridges not heavy, considering the size of the 
animal. Zygomatic plate much produced forward, visible in 
front of the upper bridge for a distance of nearly 4 mm. 
Palatal foramina short, not nearly reaching to the level of 
m’, narrow, little open. Bullee comparatively small, not so 
large as in the smaller wanthurus. 
Incisors markedly opisthodont, the angle about 64°. 
Dimensions of the type (as measured by Dr. Hose) :— 
Head and body 226 mm.; tail 256; hind foot 50; 
ear 21. 
Skull: greatest length 56; condylo-basal length 51:7; 
zygomatic breadth 26°8; nasals 22°3x5°6; interorbital 
breadth 6°5 ; zygomatic plate 7:3; palatilar length 26°5 ; 
palatal foramina 8°2 x 3:2; upper molar series 9, 
fib. Minahassa, N. Celebes. Type from Mt. Masarang, 
4000’, 
Type. Adult male. B.M. no. 97.1. 2.24. Original num- 
ber 8. Collected 14th November, 1895, by Dr. Charles 
Hose. Four specimens examined. 
This species, which had been wrongly determined as 
R. celebensis, is readily distinguishable by its large size, 
opisthodont incisors, broadly projected zygomatic plate, and 
small palatal foramina. 
Rattus bontanus, sp. n. 
Without prominent long piles in fur. White part of tail 
shortened. 
Size rather less than in R. celebensts and wanthurus. 
Fur throughout of normal length (hairs of back about 20- 
22 mm.) and without specially elongated piles ; both fur and 
piles are longer than in celebensis, but far shorter than in 
vanthurus and marmosurus. General colour above coarsely 
lined cinnamon-brown. Under surface dull whitish, not 
sharply defined, the lateral hairs greyish. Hars brown, not 
darker than head. Hands and feet brown, terminal digits 
lighter, Tail very thinly hairy, with broad scale-rings seven 
to the centimetre; blackish brown to within about 3 cm. of 
the tip, then white. 
Skull most like that of A. celebensis, with similarly light 
supraorbital ledges and comparatively narrow little-projected 
zygomatic plate ; but it is smaller, with narrower brain-case 
and longer palatal toramina, which penetrate between the 
first laminge of m*, Bullee comparatively large. 
The front of the type-skull is unfortunately broken, so that 
the length of the nasals and the set of the incisors cannot be 
determined. 
