KtrNGL. SV. VET. AKADEMIENS HANDLINGAB. BAND 48. N:0 5. 



33 



as in the adult because greyish white hairs are mixed with the black. The same is 

 the case with the upper portion of the tighs. Other parts are coloured as in the 

 adult. 



Condylobasal length 



Basicranial » 



Occipitonasal » 



Zygomatic breadth 



Breadth of braincase 



Least postorbital width 



Least interorbital width below the nasal bump. . . . 



Breadth across middle of orbits 



Length of palate mesially . . 



Front of canine to back of m" 



Length of upper molar series 



Breadth of snout across last premolar 



Distance from occiput to middle of superciliary ridge 



The measurements above prove that the males of the Kilimanjaro Guereza 

 have considerable larger skulls in every respect than the Escarpment Guereza. The 

 difference between the female skulls is, however, less apparent, and some dimensions 

 may even be larger in the Escarpment Guereza. That female animals of two geo- 

 graphic races are rather similar while the males are very different is a common 

 occurrence. That the Kilimanjaro Guereza belongs to a larger race is among other 

 things indicated by the teeth being, even in the females, larger than those of the 

 Escarpment animals. In the former the ridge above the orbits (the eyebrow-ridge) is 

 less prominent and situated lower down when compared with the vertex of the skull 

 than in the latter. The profile contour of the Escarpment Guereza (PI. I, fig. 1) is 

 therefore much more evenly sloping than in the larger race. This difference is well 

 visible in the females as well. 



The forest inhabited by the new race of Guereza is partly not very thick, but 

 the undergrowth consisting of tall herbs, bushes and small trees is very thick in such 

 places where the big trees stand a little apart. In the early morning the males 

 were heard producing the same humming or buzzing noise (something like »brrm 

 brrrm» long continued) as' has been described for other Guerezas. When in compa- 

 ratively low trees this monkey hastens to escape, but in high trees it often thinks 

 itself safe, and it can hardly be termed very shy. For a person who has a little 

 time to spare it is easy to shoot the 6 specimens which are permitted by the shooting 

 license, and this number is far too great to afford sufficient protection for the spe- 

 cies, if it should become fashionable among sportsmen to secure their full allowance 

 of Guerezas in the Escarpment forests. 



K. Sv. Vet. Akad. Handl. Baud 48. N:o 5. 5 



