DUIRERS 
167 
Head of Yellow-backed Duiker. 
The YELLOW-BACKED DUIKER (Cephalophus sylvicultor). 
This species is distinguished from most of the other members of the 
genus by its large size, coupled with its blackish colouring, and the 
presence of a yellowish crest on the back and a similarly coloured 
longitudinal patch on the rump. Height at shoulder, 34 inches. It is 
represented in N. Rhodesia by C. s. coxz, and by another race in the 
Ituri Forest. 
Distribution—The West Coast of Africa from Liberia to Angola, and 
thence eastwards through the forest-zone. 
Length on Circum- 
antl ss Tip to Tip. Locality. 
if 33 x. Sierra Leone 
—6¢ 3 3 N.E. Rhodesia 
62 32 43 Fanti . 
62 Ba 32 Luapulu River, N.E. 
Rhodesia 
63 33 5 Sierre Leone 
6} 34 si Ashanti 
53 33 42 Gabun 
5 32 44 Angola 
5 3% 4% Do. 
5 3 N.E. Rhodesia 
Owner. 
Major C, E. Palmer. 
Dr. Albert von Stephani. 
British Museum. 
G, M: E- Leyer: 
Westen) Oswell: 
C. Beddington. 
Sir Edmund G. Loder, Bart. 
Hon. Walter Rothschild. 
G. W. Penrice. 
H. Cookson. 
