12 
THE MAMMALS OE EGYPT. 
as the one described by Heuglin from some islands on the W^hite Nile, which is 
in all likelihood the case. He has also mentioned that it abounded in the mountains 
of Kassala and on the Gebel el Lus, and that it was numerous on all the isolated 
mountains in Takah and to the south, east, and west of it, and especially in Basaland. 
As it is extremely improbable that two large species of baboons occur together on the 
Gash River near Kassala, I conclude that Sir Samuel Baker’s dog-faced baboon, observed 
by him in the neighbourhood of Gedarif, and James’s so-called C. hamadryas were closely 
allied to, if not identical with, the black-faced, olive-coloured baboon of Abyssinia, 
P. doguera, Puch. & Schimp., viz. P. anuhis, F. Cuvier. 
All the evidence on record points to the existence of only seven species of the 
CercopithecidsB in the valley of the Nile between the latitudes of Dongola and Fazoql, 
viz. Colohus guereza^ Riipp.^, Cercopithecus wthiops, Linn., C. pyrrhonotus, Hemp. & Ehr., 
C. neglectus, Schleg., Papio hamadryas, Linn., P. anubis, F. Cuv., and Tlieropithecus 
gelada, Ruppell. 
1 [Th© Guereza of Abyssinia should bear the specific name of abyssinicus, for there can be no doubt as to its 
being identical with the Lemur abyssinicus of Oken (Lehrb. Naturg. iii. Zool. 1816, p. 1182). W. E. ue W.] 
