XXIV 
GNUS AND DUIKERS 
303 
Topi is the Somali name of an antelope intermediate 
in size and ugliness between the wildebeest and the 
hartebeest; it lives in the Man Highlands. The skin of 
the topi presents glossy purple reflections like the bloom 
on a ripe plum. The curious curve of its horns both in 
male and female is a most striking speciflc feature. 
A duiker. 
The topi does not occur in large herds like the kongoni, 
but twenty or thirty may herd together. 
Duikers or duikerboks are small animals (they weigh 
about thirty pounds), and with one exception (the 
Indian four-horned antelope) live in Africa, where they 
are widely distributed, and exhibit endless variation. 
Duikers, male and female, possess a pair of small straight 
horns. Some of the species have a tuft of hair between 
the horns, almost hiding them, and from this “head- 
crest ” the name of the genus, Cephalophiis, is derived : 
