406 MR. OLDFIELD THOMAS ON MAMMALS 



clothed (except for its body-furred basal half-inch) with dark brown or black hairs, 

 some 7 to 9 millim. in length, the scales quite hidden. 



Skull and teeth as already described. Palatine foramina just reaching backward to 

 the front edge of m.' ; palate ending behind opposite the posterior lamina of m?. 



Dimensions of the type, an adult male in skin : — 



Head and body 204 millim. ; tail (doubtfully perfect) 121 ; hind foot (moistened) 35-5. 



Dimensions of skull, see p. 404. 



Hah. Plateau of Monte Data. 



Type. B.M. 95. 8. 2. 15. 



This interesting animal, which, with very much the general appearance of Carpomys 

 melanurus, is entirely different in essential characters, I have named in honour of 

 my friend and colleague Mr. W. R. Ogilvie Grant, by whom all the business matters 

 connected with Mr. Whitehead's expedition v/exe managed, and who has himself 

 worked out and described the magnificent collection of birds, which contained examples 

 of no less than fifty new species. 



" This interesting new Eat was captured for me by the Igorrotes, with the aid 

 of their small terriers ; it seems rare, only three specimens being obtained, Batomys 

 granti is at first sight the same animal as the next species, Carpomys melanurus, but 

 has a bare ring round the eye, and when alive is easily separated from Carpomys 

 by this character. The two animals, however, which externally appear almost 

 identical, have the teeth so diff'erent that they have been separated by Mr. Thomas 

 into diflferent genera. Found at 7000 feet on Monte Data. 



"■Distribution. Highlands of Central Northern Luzon." — J. W. 



Carpomys Thos. 

 Carpomys Thos. Ann. Mag. N. H. (6) xvi. p. 161 (1895). 



Form more or less as in such arboreal Murines as Hapalomys and Pithechirus. Fur 

 thick and woolly. Pollex with a large nail ; other digits, including the non-opposable 

 hallux, with claws. Tail long, well haired. Mammae — 2 = 4. 



Skull (PI. XXXVI. figs. 6 and 7) with a large rounded brain-case and short face. 

 Supraorbital region without sharp ridges or overhanging ledges. Interparietal large; 

 zygoma-root as in Crateromys, i.e. without any forwardly-projecting plate, the front edge 

 vertical or even concave. Anterior palatine foramina fairly long. Bullae small. 



Teeth (PI. XXXVI. fig. 3). Incisors smooth in front. First and second upper 

 molars, as compared with those of Mus, each with an additional lamina, formed 

 apparently by the normal posterior lamina being doubled round on itself. The last 

 molar is normal, so that the laminar formula is 4 — 3 — 2. Both m.^ and m.^ have well- 

 marked antero-internal supplementary cusps. In the lower jaw m.j has an additional 

 lamina in front, and both it and m.„ have well-marked posterior supplementary cusps, 

 while the last-named has in addition an antero-external one. 



