17 
The Black Boc. Aigoceros niger. 
Black ; female and young brown ; face white, with a dark streak. 
Antilope niger and A. Harrisii, Harris, Wild African Anim. t. 23. 
Inhabits S. Africa. Brit. Mus. Males and female and young. 
18. ORYX {Blaim., H. SmWi), 
with elongate, subulate horns, ringed at the base, straight, or slightly arched, placed in a line with the 
face ; neck maned above and below ; tear-bag none ; nose subcervine, with a marginal muffle ; hoofs 
narrowed in front, false hoofs large ; teats four (two, Harris). In the skull there is a slight sub- 
orbital fissure, but no pit, and the grinders have supplementary lobes. 
The KooKAAM or Gemsboc. Oryoc Gazella. 
Horns straight, shelving backwards ; throat with a bunch of black hairs ; black streak on the face, 
conjoined under the chin ; rump, face, spinal line, lateral streak, and very broad band on the 
thigh and cubitus black in summer. Young pale brown ; hairs blackish at the base. 
Capra Gazella, Linn. — Antilope Oryx, Pallas. — H. Smith. — A. hezoartica, Pallas. — A. recticornis, Erxl. — Pal- 
las, Nov. Comm. Petrop. xiii. t. 10. f. 6— Oryx Capensis, Ogilby. — Harris, W. A. A. t. 9. 
Inhabits S. Africa ; Cape of Good Hope. Brit. Mus. Adult and young. 
The Beisa. Oryw Beisa. 
Horns straight ; throat without any bunch of hairs ; black face-streaks separate. 
" Pale ; face, belly and limbs white ; front of face, two streaks on cheek, narrow line along throat, 
, dorsal streak, streak on each side abdomen, band round upper part, and streak in front of lower 
part of fore-leg and end of tail black." 
Antilope Beisa, Ruppell, Atlas, t. 5. — Oryx Beisa, Sundevall. 
Inhabits Abyssinia. Mus. Frankfort. 
There is a male and female in the Frankfort Museum ; they are smaller than A. Gazella of the Cape, 
and both have the face-streaks separate : there is a black streak on the throat, as in A. Gazella, but no 
bunch, nor is there any in the Frankfort specimen of A. Gazella : the mane of the nape of the male is small, 
indistinct, continued behind in a broader dark streak to the middle of the loins. In the male the mane is 
blackish, in the female like the back. They have no dark mark on the rump, found in A. Gazella. 
The Oryx. Oryx leucoryoc (H. Smith). ^ 
Horns slender, slightly arched : white, reddish varied ; in winter greyish. 
Antilope lemoryx, Pallas. — Ehrenb. S. P. t. 3. — Licht. Saugth. t. 1. — A. ensicornis, Ehrenb. — A. Algazella, 
Rupp. t. . — A. Gazella, Pallas. — A. hezoartica, Erxl. — H. Smith. — Algazelle, F. Cuv. Mam. Lith. t. . — 
A. Eleotragus, Schreb. t. . (not descrip.) 
Inhabits N. and W. Africa ; Nubia ; Sennaar ; Senegal. 
I have compared the Nubian and Senegal specimens, and cannot discover any difference between them. 
There is a fine adult male at Knowsley ; white ; neck, crest, ring round the top of the fore- and hinder- 
legs, and a slight line on the lower part of the sides brown ; streak across the eyes, lozenge-shaped spot 
between the base of the horns, and a large, elongated spot on the centre of the nose dark grey ; tail flat- 
tened at the base, and ending in a tuft of very long, rather curled hair. 
It is very vicious, and has worn away the front of the horns in some parts, even so as to expose the 
core, by rubbing it against the wall of its stable, and especially against the chain with which it is fastened. 
**** Throat slightly maned. • 
19. ADDAX, Oryx (part Blainv. and others), Gazella (part H. Smith), 
with slender, elongate, ringed, slightly spirally twisted horns, nearly on a line with the face ; neck with a 
slight gular, but no nuchal mane ; nose ovine, hairy ; hoofs semicircular, edged ; tear-bag marked 
by a tuft of hair ; forehead longly hairy. 
The Add ax. Addaw nasomaculatus. 
White ; forehead and front of face darker ; grey in winter. 
Antilope nasomaculatus, Blainv.— H. Smith. — A. Addax, Licht. Saugth. t. 2.~Rupp. Atlas, t. 7.— Mam. Lith. 
t. .—A. suturosa, Otto, N. A. Nat. Cur. xii. t. 48.— Griffith, A. K. t. 180.— J. gihhosa, Savi.— ^. Tao, 
