36 EINAR LONNBERG, MAMMALS COLLECTED IN CENTRAL AFRICA. 



Cercopithecus leucampyx schubotzi Matschie. 



c? ? '7a, (^ ad., 9 semiad. V^^ 1913, Rutshuru; c? pull., ? juv., Beni, Aug., Sept. 1914; 

 1 <? old, ibid. Dec. 1914. 



This race is, of course, very nearly related to C. I. carruthersi PocooK, but the latter 

 is said to be »darker» on the belly than on the back, and that is not the case with the 

 present specimens. On the other hand the adult males differ somewhat from Matschie's 



description of C. I. schubotzi when the author quoted says »die Gegend zwischen 



den Schultern nicht wesentlich dunkler als der Riicken » , for in the present 



specimens of adult males the area between tlie shoulders is black, sparingly ringed with 

 whitish, thus darker than the back. In this respect, they resemble Elliot's )>Lasiopyga 

 princeps », but differ again from that one by the colour of the hind legs, which is only 

 little darker than that of the back. In Cercopithecus princeps the thighs are said to be 

 black )>faintly speckled with white », and the legs beneath the knees only »very slightly 

 so». G. princeps is also said to have the area between the shoulders »jet black ».' 



The black band across the chest is more or less ticked with whitish rings in the adult 

 males of the present collection; in the females it is blackish grey. The black of the distal 

 portion of the tail has greater extension in the adult males than in the females and 

 young. 



The specimens from Beni and Rutshuru are similar in colour. 



The old male from Beni with much worn teeth has the largest skull with a greatest 

 length of 115,5 mm. The corresponding dimension of the two male skulls from Rutshuru 

 is resp. 108,7 and 109 mm. Both are fully adult, but the molars are not yet much worn. 

 The zygomatic breadth is resp. 75,7, 74,5 and 72 mm.; length of upper molar series resp. 

 28,3, 26,8, and 26,7 mm. 



The capacity of the brain-cavity is about 70 ccm. in one, only about 67 ccm. in an- 

 other adult male. In a quite young male with milk-dentition it is about 52 ccm. 



This dark monkey appears to play biologically the same parts in the dense and ever- 

 green forests of the Central Lake-district as the )>Kima »-monkey?, i. e. the various races 

 of the albigularis-grouj) do in East Africa. 



Cercopithecus kandti JMatschie. 



1 c? '%; ? 1914, Kisenji, German East Africa. 



These two specimens Capt. Abrhenius received as a present from a German officer. 



The female is fully as, or perhaps still more brightly coloured than the male. Espe- 

 cially is to be noted that the deep red of the anal region extends more over the basal por- 

 tion of the tail in the female than in the male. 



1 The three mentioned races termed carruthersi, princeps and schubotzi are very nearly related, and it appe- 

 ars uncertain whether they can be distinguished by constant characteristics, if a great material was compared. 



