KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 58. N:0 2. 37 



As the skull of this species appears to be undescribed, the type being a skin without 

 skull, the following measurements of a fully adult, but not very old (parietal sutures 

 still open) male skull are communicated. 



Greatest length 117,3 mm. 



Occipitonasal length 97,8 » 



Basal length 88 > 



Zygomatic breadth 78,6 » 



Breadth of brain-case 59,3 » 



Least postorbital width 42,5 » 



Interorbital width 7,7 » 



Breadth across middle of orbits 60 » 



Length of nasals mesially 20,5 » 



Palatal length 40 » 



Greatest breadth of planum nuchale 60,6 >• 



Length of upper molar series 28,5 " 



» » lower » » 33,5 » 



» » upper canine 21 -» 



The capacity of the brain-cavity of this skull is about 76 ccm. 



Cercocebus (Lophocebus). 



This group is characterized by its crested head and long hair, but when Elliot 

 in his monograph (Vol. II, p. 266) adds »zygomatic arch (jugal), below alveolar border 

 of molars » this is evidently a characteristic which only holds good at most for some of the 

 members of the group as already pointed out by Schwarz 1910. 



Cercocebus (Lophocebus) albigena ituricus'^ Matschie. 



7 specimens, viz, 1 old c?, 2 adult ??, a young J" and 1 young $ from Beni, Jan. 

 1914, and an adult ? and a young J* from Rutshuru, ^^la 1913. 



A member of the albigena-growp with quite short-haired cheeks, a strongly deve- 

 loped brow-fringe and a large occipital tuft or crest. 



In the old c^ the general colour of body, head, limbs, feet and tail is jet black with 

 the following exceptions. The short and sparsely set hairs on the sides of the head and 

 on the throat are light or whitish grey (but the chin is black). The long and soft hair 

 behind the ears, on the nape behind the parieto-occipital crest (which itself consists 

 of black hair of normal texture), on the hind neck, and over the shoulders (where it is 

 less soft and wooly) has a general colour which is most similar to »warm sepia » (Dau- 

 THENAY: 305, 2). Towards the tips of the soft tufts behind the ears the colour fades to a 

 paler tint, almost similar to )>otter-brown » (Dauthenay: 354, 4). Some of the long hairs 



' This species has in Zoological Record for 1913 erroneously been recorded under Oolobus(l) and may thus 

 easily he overlooked. 



