Feb., 1910. New East African Mammals — Osgood. 7 



tail vertebras 96; hind foot (c. u.) 19. Skull of type: Greatest length 

 20.4; basilar length 14.6; zygomatic breadth 10.7; nasals 7.1; 

 palatine slits 4.1; maxillary toothrow 3.3; length of m^- 2. 



Dendromus nairobse sp. nov. 



Type from Nairobi, British East Africa. No. 16709, Field 

 Museum of Natural History. Old male. Collected November 6, 

 1905, by E. Heller. 



Cltaracters. Allied to Dendromus ochropus and D. nyikce but tail 

 shorter and color much brighter; upperparts bright tawny, with the 

 black dorsal stripe sharply contrasted; zone of tawny color relatively 

 wide; underparts pale creamy whitish; ears pale ochraceous; feet 

 white, slightly touched with fulvous ; tail distinctly bicolor ; inner side of 

 hind leg without dusky spot above tarsal joint. Skull very broad, 

 with heavy, angled zygomata, the zygomatic breadth slightly greater 

 anteriorly than posteriorly. 



Measuretnents. Type: Total length 163 ; head and body 83 ; tail 

 vertebras 85; hind foot (c. u.) 18; ear 14. Skull of type: Zygomatic 

 breadth 11.6; nasals 8; palatine slits 3.9; maxillary toothrow 3; 

 length of m ^- 1.7. 



Dendromus vvhytei pallescens subsp. nov. 



Type from Lukenya Mountain, British East Africa. No. 167 10, 

 Field Museum of Natural History. Adult male. Collected Decem- 

 ber 28, 1905, by E. Heller. 



Characters. Similar to Dendromus whytei but paler; general 

 color of upperparts pale buffy ochraceous instead of tawny; under- 

 parts creamy white , nearly pure white on chin and throat ; facial 

 region without dusky markings; dorsal stripe obsolescent, consisting 

 of an indistinct narrow line of dusky-tipped hairs mixed with fulvous. 



Measurements. Type and one topotype, respectively: Total 

 length 147, 137; head and body 69, 60; tail vertebrae 78, 77; hind 

 foot (c. u.) 15.5, 16; ear 11. 2, Skull of type: Greatest length 19.8; 

 basilar length 14.8; zygomatic breadth 10.3; nasals 7.2; palatine 

 slits 3.7; maxillary toothrow 3; length of m^- 1.8. 



Zelotomys gen. nov. 



Type. M us hilde gar decc Thomas {=Zelotomys hildegardece) . 



Characters. Size medium (hind foot 22-24); tail shorter than 

 head and body; ear moderate, rounded; mammge 2-2 = 8. Skull 

 short and broad; braincase very short; frontals but little expanded 

 posteriorly, their supraorbital boundaries smoothly rounded; nasals 



