l6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 6l 



east Borneo, August 12, 1912, by H. C. Raven. Original No. 157. 

 Presented by Dr. W. L. Abbott. 



Diagnosis. — A member of the firmus-group resembling Epimys 

 integer of the Natuna Islands but color of underparts and cheeks less 

 yellowish (between cream-buff and cartridge-buff instead of cha- 

 mois), and skull with more slender rostrum. 



Measurements. — Type: head and body, 207 mm.; tail, 262; hind 

 foot, 44 (dry, 43.5, 41) ; condylobasal length of skull (teeth mod- 

 erately worn), 46.0; zygomatic breadth, 24.1; interorbital constric- 

 tion, 6.9 ; mastoid breadth, 18.5 ; depth of braincase, 13. 1 ; nasal, 18.9 ; 

 diastema, 13.2; mandible, 29.2; maxillary toothrow (alveoli), 8.5; 

 mandibular toothrow (alveoli), 8.5. 



Specimens examined. — Four, from the following localities in 

 Dutch Southeast Borneo : Birang River, 1 ; Karang Tigau, 1 ; Lo 

 Bon Bon, 1 ; Segah River, 1. 



Remarks. — The slenderness of the rostrum is a character not 

 shared by other parts of the skull. In the type and a female of about 

 the same age from Birang River the breadth of rostrum at middle of 

 nasal is 8.4 mm.; zygomatic breadth, 24.1 and 23.9 respectively. In 

 two similar females of E. integer the breadth of rostrum is 9.6, zygo- 

 matic breadth 24.0 and 24.2. 



EPIMYS VICTOR, new species 



Type. — Adult female (skin and skull), No. 1 15422, United States 

 National Museum. Collected near mouth of Rumpin River, Pahang, 

 May 25, 1902, by Dr. W. L. Abbott. Original No. 1706. 



Diagnosis. — Largest known member of the Urmus-gronp, the 

 skull attaining a total length of about 60 mm., as compared with 

 about 55 mm. in Epimys Urmus and E. validus; color as in E. firmns ; 

 teeth like those of E. Urmus, therefore relatively smaller than in E. 

 validus and with the elements of anterior crescent in m 2 and m 3 less 

 developed. 



Measurements. — Type: head and body, 265 mm.; tail, 291; hind 

 foot (dry), 50 (48.5) ; condylobasal length of skull (teeth moder- 

 ately worn), 57.0; greatest length, 59.6; zygomatic breadth, 29.2: 

 interorbital constriction, 8.3; occipital breadth, 20.2; depth of brain- 

 case, 14.5; nasal, 23.7; diastema, 17.0; mandible, 35.2; maxillary 

 toothrow (alveoli), 10.4 ; mandibular toothrow (alveoli), 10.0. 



Specimens examined. — Seven, from the following localities : Pa- 

 hang, Rumpin River, 4 ; Johore, Sembrong River, 1 ; Ka Kuli, 1 skin 

 and 1 skull. 



