270 NEW MAMMALS AND BIRDS 



West Sumatra, on 28th April 1914, by H. C. Robinson and C. 

 Boden Kloss. 



Characters: — A form of Sc. tenuis about the size of Sc. t. 

 gunong 2 from the mountains of the Siamese Malay States but 

 with much longer fur and longer and narrower nasals. 



Measurements: — Head and body, 150; tail, 115; hindfoot, 

 36 mm. (taken in the flesh). Skull: greatest length, 40.8; 

 eondylo-basilar length, 33.2; palatilar length, 15.3; diastema, 

 9.1; upper molar row inclusive of pm 3 , 7.4; median nasal 

 length, 12.3; interorbital breadth, 12.9; zygomatic breadth, 

 23.5 mm. 



Specimens examined : — Thirteen. 



Sciurus vanakeni, sp. now Type'. — Adult male (skin 

 and skull), Federated Malay States Museums No. 650/14, 

 collected at Barong Bharu, West side Barisan Range, Korin- 

 chi, 4,000', West Sumatra, on 4th .lime 1911, by H. C. Robin- 

 sun and C. Boden Kloss. 



Characters': — A small dark-backed member of the Sc. 

 loiev' group, with the pale colour of the under-surfaee reduced 

 iu extent and indistinctly margined. Skull and teeth smaller 

 than the Bornean and allied Malay Peninsula forms. 



Measurements: — Head and body, 122; tail, 5) (imper- 

 fect) normally 80-90; hind foot, 30 mm. (measured in flesh). 

 Skull: greatest length, 34.0; eondylo-basilar length, 28.1; 

 palatilar length, 14.0; diastema, T.<S; upper molar row includ- 

 ing pra 3 , 5.7 ; median length nasals. !>.] : interorbital breadth, 

 10.5 ; zygomatic breadth, 19.2 mm. 



Specim ens exa m in eel : — Thirteen. 



MURIDAE. 



Oromys, gen. now 



External form as in Epimijs, tail not shorter than head 

 and body. Fur dense and long, interspersed with longer very 

 slender spines. Hindfoot with fifth toe reaching beyond the 

 middle of the basal phalanx of the fourth ; six distinct elevated 

 plantar pads. Seven palatal ridges, the last four divided 

 mesially. 



Skull slender, narrow and tapering: zygomata much com- 

 pressed anteriorly; no masseteric knob present at the base as 

 in Mus; lateral profile of rostrum straight; posterior termin- 

 ations of premaxillae very oblique; interorbital breadth great; 

 no supraorbital or parietal ridges; interparietal transversely 

 long and narrow, front and back edges almost parallel. 



2. Robinson and Kloss, Joum. Fed. Malay States Mus. v, p. 119 

 (1914). 



3. Tlxomas, Ann. and Mag. Nat. Hist, (6) ix, p. 253 (1892). 



Jour. Straits Branch 



