NO.() NEW SPECIES OF EAST AFRICAN MAMMALS — HELLEU 3 



Closely allied to hildehrandti of the coast lowlands, which is a 

 larger rufous brown form, and to iigandce, which is darker and 

 smaller. This is the most abundant mouse of British East .\frica 

 and the only native species which enters houses. 



EPIMYS NIVEIVENTRIS UL^, new species 



Type from the Ulu Kenia Hills, British East Africa; adult fe- 

 male; number 162887, U. S. Nat. Mus. ; collected by J. A. Loring, 

 November 19, 1909; original number 8221. 



Coloration. — Above wood brown becoming lighter on the sides, 

 but sharply defined from the pure white of the under parts ; hairs of 

 dorsal region wood brown, with dark blackish tips, the median dorsal 

 area darkest. Ears dusky, clothed sparingly with minute brown 

 hairs. Feet and under parts pure white, the hairs everywhere white 

 to the roots. Tail dusky above, whitish below, but not sharply 

 bicolor; clothed with brown hair, which becomes somewhat more 

 abundant at tip, but not distinctly pencillate. 



Measurements. — Head and body, 88 mm.; tail, 128; hind foot, 

 19.5. vSkull: condylo-nasal length, 26.5; basilar length, 20.8; zygo- 

 matic breadth, 14; nasal, 11; interorbital constriction, 4.2; dia.stema, 

 7; maxillary toothrow, 4.4. 



Allied to subfusciis, Osgood, of the Rift Valley, from which form 

 it differs in smaller proportions and the greater extent of the white 

 of the under parts. This mouse occurs abundantly on the rocky 

 kopjes of the Athi Plains. 



EPIMYS ENDOROBiE, new species 



Type from the western edge of the Mau Forest, 25 miles north ol 

 Edoma Ravine, altitude 8,600 ft. ; adult male; number 162888 U. S. 

 Nat. Mus.; collected by Edmund Heller, November 27, 1909; origi- 

 nal number 1261. 



Coloration. — Median dorsal area from snout to base of tail hair 

 brown, darkest on mid-line of back and merging on sides of head 

 and body to ochraceous buff: lower sides fulvous, sharply defined 

 from the whitish of the under parts. Ocular region and sides of 

 snout blackish. Under parts white, tinged lightly with buffy, the 

 hair broadly blackish .slate at base. Feet white. Ears blackish, 

 clothed sparingly with minute brownish hairs. Tail quite naked at 

 base, dusky, becoming hairy toward tip, the terminal half inch white. 



Measurements. — Head and body, too mm.; tail, 151; hind foot, 

 20; ear. 19.5. Skull: condylo-nasal length, 28.5; basilar length. 



