ANTELOPES. 
295 
inches at the withers, and still higher at the rump. Allied to this is the dama 
gazelle {G. dama), from the Sudan, with relatively short lyrate horns, and no dark 
band on the flanks. Another fine species is the aoul (G. soemmerringi), inhabiting 
the lowlands of Somaliland, and also found in Abyssinia and the Sudan. In the 
swift gazelle the length of the horns may be 12 inches; While in the aoul or 
Scemmerring’s gazelle this varies from about 12 to upwards of 19J inches. The 
height of the latter species at the shoulder is about 30 inches. It is characterised 
by its very massive lyrate horns, marked with about eighteen rings, and may be 
distinguished from the dama by its longer ears, bordered with black externally, 
and the more strongly-defined and nearly black markings on the face. This is 
the finest of the Somaliland gazelles; and was formerly found in small herds close 
to the shore. 
Clarke’s Antelope. 
Genus Ammodorcas. 
Nearly allied to the true gazelles is a remarkable antelope ( Ammodorcas 
clarkei), recently discovered in Somaliland, 
which serves to connect the preceding with the 
following species. Clarke’s antelope, while 
having the facial markings of the gazelles, is 
distinguished by the regular upward and for¬ 
ward curvature of the rather short horns, which 
are ringed in front at the base. The females 
are hornless; and the skull is intermediate 
between that of the gazelles and the under¬ 
mentioned gerenuk. The neck is very long, 
and the tail thin and long. The number of 
ring's on the horn varies from five to ten. 
The general colour is a deep cinnamon, darker 
than in any of the true gazelles. These ante¬ 
lopes appear to be local in Somaliland, but are 
said to be common in parts of the interior. Mr. 
Clarke states that when running they throw 
the tail upwards and forwards, and at the 
same time incline the long neck backwards, so 
that the two look as if they would touch each 
other. It is locally known as the dibatag. head op clakke’s antelope.— After Thomas. 
The Gerenuk. 
Genus Lithocranius. 
Still more remarkable than the preceding is the gerenuk, or Waller’s gazelle 
(Lithocranius walleri), which is also an East African species, ranging from 
Somaliland to the Ivilima-Njaro district. The most peculiar external feature about 
