106 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



vol. 40. 



Measurements of long-tailed rats. 



EPIMYS WHITEHEADI (Thomas). 



1894. Mils whiteheadi Thomas, Ann. Mag. Nat. Hist., ser. 6, vol. 14, p. 457, 

 December, 1894. 



About fifty specimens of small reddish brown, spiny rats, with 

 bicolor tails, were collected in various parts of Borneo or on islands 

 near the coast by Doctor Abbott. (For the exact localities see table 

 of measurements, p. 107.) I have called them all Epimys whiteheadi, 

 although they show much variation, and I have been unable to com- 

 pare them with topotypes from northern Borneo. Several of the 

 present series have a strong tendency to be more brown and less 

 "red" on the upper parts and to have gray instead of ochraceous 

 bellies. Such specimens also average larger externally and cranially 

 than do the others. These specimens are perhaps representatives of 

 Thomas's recently described Epimys whiteheadi perlutus, 4 but they 

 have distinctly smaller skulls, shorter tails, and longer hindfeet, and 

 are found in southwestern Borneo and Pulos Bauwal and Sebuku. 

 The series of skins from Balik Papan Bay are very uniform in their 

 bright " reddish" coloration and look exactly like a series of topo- 

 types of Epimys asper (Miller) 5 from Trong, Lower Siam. 



(For measurements see table, p. 107.) 



1 Collector's measurements. 



2 Type. 



3 Skull only. 



4 Ann. Mag. Nat. Hist., ser. 8, vol. 7, p. 205, February, 1911. 

 6 Proc. Biol. Soc. Wash., vol. 13, p. 145, April 21, 1900. 



