BLACK-RUMPED DUIKER 161 



limbs, with whitish streaks above the eyes. The small and rounded 

 ears are dark brown externally. The rump and backs of the hips are 

 like the body in colour, except that the tint darkens somewhat on each 

 side just below the tail, as it also does on the basal portion of the 

 upper surface of the tail itself, which is elsewhere brown above and 

 whitish beneath. The limbs are coloured like the body on their 

 outer sides. 



The horns form a slight angle with the plane of the nose, although 

 the inclination does not approach that in CepJialopJius grimmi. Horns 

 usually about 2 inches in length ; very minute in females. Skull broad 

 and stout, with the middle notch of the palate very slightly in advance 

 of the lateral pair. 



This species is definitely known to range from Gambia to the 

 Gold Coast. 



THE BLACK-RUMPED DUIKER 



( CepJialopJius melanorJicus} 



Described by Dr. J. E. Gray in 1846, this western species differs 

 from CepJialopJms maxivelli by its somewhat inferior size(i 3 inches), and 

 by the brown of the back shading into black on and at each side of 

 the base of the tail, below which there is a sudden change to white on 

 the backs of the hips. The horns of males scarcely exceed those of 

 the opposite sex in length. 



This species inhabits the country south and east of the Niger, 

 extending on the west coast from the Cameroons to Angola and east- 

 wards to the coast opposite Zanzibar. 



THE UGANDA DUIKER 



( CepJialopJius icquatorialis} 



This duiker, which was named by Dr. P. Matschie in 1892, is the 

 eastern representative of CepJialopJius nielanorlicus, of which, indeed, it 

 may well be regarded as a local race. 



It differs from the western animal by the lower surface of the body 

 being but slightly lighter than the upper, and the absence of horns in 

 the female. As its English name implies, it is a native of Uganda ; 

 Chagwi being the type locality. 



M 



