KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 58- NIO 2. 37 



As the skull of this species appears to be imdescribed, 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. 



Groatest length 117,3 mm. 



Occipitonasal length 97,8 » 



Basal length 88 



Zygomatic breadth 78,6 



Breadth of brain-case 59,3 » 



Least postorbital widbh 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 nuchalc 60,6 » 



Length of upper molar series -8,5 >• 



« » lower i 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 al .veolar börder 

 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' Matschiis. 



7 specimcns, viz. 1 old J, 2 adult ??, a young ef and 1 young ? from Beni, Jan. 

 1914, and an adult $ and a young ef from Rutshuru, l2 / 12 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 ef 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 o ver the shoulders (where it is 

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

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

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



1 This species has iu Zoological Record for 1913 erroneously been recoided under Colobus(l) and inay thus 

 easily be overlooked. 



