J 48 PROCEEDINGS OF THE ACADEMY OF [March, 



median line (he dull ochraceous-rufous extends hetween thiglis to 

 cover ahout 100 nnu. of base of tail. Anteriorly the light mantle 

 darkens much more gradually through the same dull ochi'aceoas- 

 rufous to the dark reddish-brown neck and blackish outer surface 

 of front legs. Forehead and anterior portion of crown like man- 

 tle. At region jusl in front of ears the abrupt change takes place 

 to color of neck. Under parts, cheeks, sides of neck and inner 

 surface of limlis light yellow. The exact shade is very nearly the 

 cream-buff of Ridgway (like that of mantle, but without the tinge 

 of clay color), except on chesl, throat and inner surface of front 

 legs, where it brightens to buff. On belly the cream-buff is some- 

 what obscured by the appearance at surface of the dark slate-gray 

 basal portion of hairs. Feet blackish-brown, the cream- buff of 

 inner surface spreading conspicuously over wrist and forearm, and 

 slightly just below ankle and on ouler edge of sole. Tail (except 

 proximal 100 mm.) dark bistre throughout, the hairs everywhere 

 with whitish cream-buff tips, 10-15 mm. in length. These tips 

 nowhere conceal the bistre, which by contrast appears nearly black. 

 On under surface they are so arranged as to form a grizzled yellow- 

 ish-white border to the clear bistre median stripe. Above they 

 cover the surface almost uniformly, producing a frosted appearance, 

 through which may be detected a faint indication of dark cross 

 bars, ten of which are distinguishable in favorable light. 



Skull and Teeth. — Skull similar to that of Ratiija bicolor, but 

 braincase more arched and rostrom shorter. The nasals are dis- 

 tinctly broader posteriorly, and as a result the nasal branches of the 

 premaxillaries are narrower. Teeth as in Ratufa bicolor and R. 

 melanopepla. 



Measurements. — External measurements of type: Total length, 

 770; head and body, 345; tail vertebrae, 425; hind fool, 84 (78). 



Cranial measurements of type: Greatest length, 68 (69);* basal 

 length, 57 (58); basilar length, 53 (54); length of nasals (along 

 median suture), 21 (23) ; breadth of both nasals together ante- 

 riorly, 12 (13) ; breadth of both nasals together posteriorly, 9 (5) ; 

 least interorbital breadth, 29 (27) ; zygomatic breadth, 42 (43) ; 

 mandible, 42 (45); maxillary molar series (alveoli), 12.8 (13); 

 mandibular molar series (alveoli), 18.8 (14). 



^ Measurements in parentheses are those of an adult female Ratufa 

 bicolor from western Java. 



