FROM KORIXCHI, W. SUMATRA. 273 



Measurements: — Head and body, 192 ; tail, 202; hindfoot. 

 43 mm. (measured in flesh). Skull: greatest length, 48.0; 

 condylo-basilar length, 39.5 ; diastema, 13.0 ; upper molar row, 

 6.8 ; length of palatal foramina, 6.5 ; median length of nasals, 

 18.6 ; breadth of nasals, 4.9 ; zygomatic breadth, 21.0 mm. 



Specimens examined : — Twenty-four. 



Epimys inffatus, sp. nor. Type : — Adult female (skin 

 and skull) Federated Malay States Museums, Xo. 323/14, 

 collected at Sungei Kumbang, Korinchi, 4, TOO', West Sumatra, 

 on 2nd April 1914, by H. C. Robinson and C. Boden Kloss. 



Characters: — A tawny spinous-backed rat with a bicolored 

 tail and sullied under-surface, having a superficial resemblance 

 to the rats of the rajah-surifer group: skull closely resembling- 

 these but with a pronounced swelling on the sides of the 

 rostrum immediately in front of the infraorbital plate. 



Measurements: — Head and body, 200; tail, 155; hindfoot, 

 40 mm. (measured in flesh). Skull: greatest length, 46.6; 

 condylo-basilar length, 39.3: diastema, 13.4; upper molar 

 row, 6.5: length of palatal foramina, 8.2 ; median nasal length, 

 10.1 : breadth of nasals, 5.3 ; zygomatic breadth, 20.3 ; breadth 

 of rostrum across swellings, 11.0 (in a specimen of E. surifer 

 of equal size, 8.0 mm.). 



Specim ens exa m inecl : — Twenty. 



Epimys fraternus, sp. nov. Type: — Adult male (skin 

 and skull), Federated Malay States Museums, Xo. 387/14, 

 collected at Sungei Kumbang, Korinchi, 4,700', West Sumatra 

 on 13th April 1914, by H. C. Robinson and C. Boden Kloss. 



Characters: — Bather darker above than E. orbus, Robin- 

 son and Kloss, s of the Siamese Malay 'States with the dark tips 

 of the spines more exposed and having below an ochraceous- 

 tawny patch on the chest, which is always lacking in Malayan 

 animals. 



Measurements : — Head and body, 162 ; tail, 231 ; hindfoot, 

 32.5 mm. Skull: greatest length, 40.6; condylo-basilar 

 length, 33.5': diastema, 10.2 ; upper molar series, 6.9 ; length 

 of palatal foramina, 6.4: median nasal length, 16.4; breadth 

 of nasals, 4.6: zygomatic breadth, 17.2 mm. 



Specimens exa m inecl :- — Thirty-four. 



Epimys hylomyoides, sp. nov. Type : — Aged male 

 (skin -and skull), Federated Malay States Museums, Xo. 

 440/14, collected at Sungei Kring, Korinchi Peak, 7,300', 

 West Sumatra, on 26th April 1914, by H. C. Robinson and C. 

 Boden Kloss. 



8. Ann'/ and Mag. Nat. Hist. (8) xiii, p. 228 (1914). 

 R. A. Soc, No. 73, 1916. 



