468 PROCEEDINGS OF THE NATIONAL MUSEUM vol. i06 



260 (252-268) ; longth of hind foot 66 (61-68), 62 (62); length of ear 41 

 (41), 39 (37-41); greatest length of skull 43.2 (40.7-45.0), 41.3 (39.9- 

 42.7); length of upper canine to \P 15.2 (15.0-15.5), 14.9 (14.6-15.2); 

 least interorbital width 5.4 (5.1-5.8), 4.75 (4.6-4.8); breadth across 

 orbital ring 29.4 (26.6-31.2), 28.2 (26.6-29.9); length of nasals 10.7 

 (9.8-11.3), 11.1 (10.3-11.9); breadth of braincase 23.7 (22.9-24.9), 

 22.2 (21.8-22.6). 



Remarks: All of the specimens examined are somewhat more 

 yellowish and have lighter colored ears than typical senegalensis. It is 

 apparent, though, that material from Senegal varies considerably, 

 even within local populations. It is for this reason, and the fact that 

 the present specimens are more widely divergent from other named 

 kinds than from the nominate form, that they are so identified. 

 Perhaps when one has material available from one side of the continent 

 to the other and is able to critically analyze the material, the animals 

 from the Sudan and farther to the east may be shown to be readily 

 separable from the animals from western Africa. Owing to the con- 

 tinuum of habitat across the savannas, the above conjecture may prove 

 to be only wishful thinking. 



Family Cercopithecidae 



Papio dttguera heuglini Matschie 



Papio heuglini Matschie, Sitz. Ges. Naturf. Freunde, Berlin, p. 81, 1898. (Near 



Shilluk Islands, White Nile, Anglo-Egyptian Sudan.) 

 Papio lydekkeri W. Rothschild, Novitates Zool., vol. 9, p. 140, Apr. 10, 1902. 



(Upper Blue Nile.) 

 Papio werneri Wettstein, Anz. K. Akad. Wiss. Wien, Math. -Nat., vol. 53, p. 190, 



1916. (Gebel Talodi, near Talodi, Nuba Mountains.) 



Specimens Examined: SLx, from: Ikoto, 1; Torit, 1; Imurok-Ikoto, 

 1; Jebel Marra, 1 (BM); Wau, Jur River, 1 (BM); Kamisa, Binder 

 River, 1 (BM). 



Measurements: The skin of an adult female from Kamisa, Binder 

 River, measures as follows: Length of head and body 597; length of tail 

 533; length of hind foot 180; length of ear 43. The skull of a young 

 adult male from Imurok measures: Greatest length 235.0; greatest 

 width across zygomatic arches 134.9; least postorbital constriction 

 60.1; length of canine to AP 73.8; breadth across M^-M^ 57.2; 

 condyloincisive length 185.0. 



Remarks: It is strange that so much of the mammal fauna of the 

 Jebel Marra should be so distinct from surrounding areas and that the 

 baboon found there should be the same as that found on the Upper 

 Nile in the southern Sudan. However, the only skin and skull from 

 the Jebel are not distinguishable from the more eastern animals and 



