PAP 10 125 



a." Mantle grayish brown ; tooth rows 



curved P. hatnadryas. 



b." Mantle pale reddish brown, tips of 

 hairs silvery white ; tooth rows 



straight P. brockmani. 



b.' Size small P. h. arabkus. 



b. Without mantle. 



a.' Rostrum longer than braincase P. planirostris. 



b.' Rostrum equal to, or shorter than brain- 

 case. 



a." Face brightly colored P. sphinx. 



b." Face black P. leucophcEus. 



Subgenus Chseropithecus. 



Size generally large ; colors dark ; mane absent ; tail not tufted. 



PaPIO NIGEEI.E Elliot. 



Papio nigerice Elliot,, Ann. Mag. Nat. Hist., IV, 8th Ser., 1909, 

 p. 247. 



NIGERIA BABOON. 



Type locality. Ibi, North Nigeria, Western Africa. Type in 

 British Museum. 



Genl. Char. General color mottled black and cream color; size 

 large ; skull, compared with that of P. heuglini from the Soudan, has 

 the ridges on sides of rostrum less elevated ; rostrum much narrower, 

 being 39.2 to 46.2; septum between orbits much narrower, 13 to 15.3; 

 lateral pits not as deep ; palate narrower ; teeth much smaller, and the 

 length of molar series shorter by nearly half the length of the posterior 

 molar of P. heuglini. 



Color. General color of top of head, and upper parts and sides 

 to rump, mixed black and cream color, the latter most prominent, the 

 hairs being purplish brown, with two bands of cream color and black 

 tip. The purple under color shows through the cream and black 

 producing a gray shade ; hairs of rump and lower back have bands 

 of ochraceous giving this part a reddish hue ; face and chin naked, 

 black ; throat grayish, chest similar to back ; abdomen like rump, bands 

 ochraceous : arms similar to back to below elbows, when the black 

 predominates to the wrists and hands, which are almost entirely black ; 

 legs redder, being tawny on thighs growing lighter to the ankles which 

 are buff yellow ; feet black ; tail cream color and olive mixed, the 



