48 
We are not aware of any authentic records of the occurrence of the 
Leucoryx on the southern frontiers of Algeria and Morocco, where, in recent 
times, it has probably been driven far into the interior. But when we go on 
as far west as Senegal and Nigeria it would appear that the Leucoryx, or 
a form so closely allied to it as to be barely distinguishable, is still abundant 
in the Senegambian deserts, and is also, according to Capt. Mockler-Ferryman, 
met with on the Nile in the vicinity of Lokoja. 
The first specimen of the Leucoryx received from Senegal was, so far as 
we know, that figured by Geoffroy St.-Hilaire and I’, Cuvier in 1819 in the 
‘Histoire Naturelle des Mammiféres’ (plate 376), which was then living 
Fig. 92. 
SS 
SSS 
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\\ 
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fio? 
My) 
; 
A Leucoryx attacked by a Lion. 
in the Jardin des Plantes. ‘This, we are told, was an adult male, standing 
about four feet high to the top of its head, and having long and well- 
developed horns. 
When the thirteenth Earl of Derby formed his great menagerie at 
Knowsley between 1835 and 1850, the group of the Leucoryx Antelopes was 
one of the specialities of the collection. ‘The adult male and female were 
figured by Waterhouse Hawkins in plate xvii. of the ‘Gleanings,’ and the 
young one, born at Knowsley, forms one of the figures in plate xvi. of the 
same work. 
Lord Derby obtained his first female Leucoryx in 1837, but it was not 
until the retirement of Mr. Cross from the Surrey Zoological Gardens and 
