LÖNNBERG, MAMMALS FROM BRIT. E. AFRICA. 31 



^pyceros melaiiipus suara Matschie. 



3 skulls, 2 of which are young semiadult, the tliird is 

 fully adult, from Donya Sabuk. 



The adult skull has the following dimensions: 



Condylobasal length 260 mm. 



Basicranial length 245 » 



Greatest breadth • . 107 » 



Interorbital breadth 74 » 



Greatest length of nasals 84 » 



» breadth » » 31 » 



Distance from orbit to tip of premaxillary 159 » 



Upper molar series 78 ■> 



The spread of the horns is small, only 168 mm, from 

 tip to tip. 



Cobus ellipsiprymnus thikse Matschie. 



1 skull and a head-skin of a buck shot 29th of Jan. 1914 

 at Donya Sabuk. 



It was of very great interest to obtain this specimen 

 because it proves very plainly that my Cobus ellipsiprymnus 

 canescens from Guaso Nyiro is quite a different animal. 



C. e. thikce is altogether darker and more richly coloured. 

 On the neck the warm sepia (Rép. des Coul. 305) is more 

 dominating; the face is a dark shade of warm sepia darken- 

 ing downwards almost to black, in strong contrast to the 

 broad pure white band round the muffle. The forehead is 

 mixed with »brownish terra cotta» (Rép. de Coul. 322,2) and 

 black. The ears are something between Dauthenays »burnt 

 umber» (304,i) and »cinnamon» (323,2) and are tipped and 

 margined with black in their distal half, white inside. The 

 white eye-mark is about 2 V2 cm. broad and extends about 

 7 V2 cm. in front of the corner of the eye, but also 3 V2 — ^ 

 cm. backwards above the eye. 



The skull is a little larger than in C. e. canescens as 

 the following measurements prove: 



Basicranial length 339 mm. 



Condylobasal length 360 » 



Zygomatic breadth 153 » 



Distance from orbit to tip of premaxillaries 225 » 



Distance from occipital condyle to front-margin of orbit .... 174 * 



