52 
p. 188 (1883), (9) p. 159 (1896) ; W. Sclater, Cat. Mamm. Cale. Mus. ii. p. 156 
(1891) ; Flow. & Lyd. Mamm. p. 344 (1891); Ward, Horn Meas. (1) p. 148 
(1892), (2) p. 188 (1896) ; Lyd. Horns and Hoofs, p. 249 (1893); Matsch. 
SB. nat. Freund. 1893, p. 104; Thomas, P. Z. 8S. 1894, p. 451; Pousargues, 
Ann. Sci. Nat. (7) iv. p. 131 (1896) ; Trouessart, Cat. Mamm. fase. iv. p. 955 
(1898). 
Antilope beatriz, Huet, Bull. Soc. Acclim. (4) 1x. p. 61 (1887). 
Oryx Leucoryx Pallasi, Fitz. SB. Wien, lix. p. 178 (1869). 
Vernacutar Names :—E/ Walrush and El Bukrus of Bahrein Arabs (Pennant). 
Height at withers about 35 inches. Prevailing colour of body, neck, and 
head a dirty white, slightly darker on the haunches. On the face the frontal 
and nasal patches are brown in colour and sometimes separated from each 
other ; the brown stripe that passes from the eye unites with the stripe that 
arises near the base of the ear to form on the cheek a large patch which 
extends below the jaw and joins across the inter-ramal area with the 
corresponding patch of the opposite side; from this patch a narrow brown 
stripe runs along the throat, and is traceable as far as the chest, which is also 
brown. ars whitish; the tip and edges not black or brown. Mane on 
neck whitish like the rest of the body, and there is no median dorsal black 
stripe. Tail white; the tuft black at the end. Fore leg from the shoulder, 
and hind leg from the thigh, deep brown, both on the outer and inner side 
down to the fetlocks ; pasterns white. A faint brown longitudinal stripe is 
traceable on each side between the belly and the flanks. Hair along spine 
reversed from rump. 
Horns long, straight, attaining a length of about 25 inches; ribbed for 
about two-thirds of their length; the ribs small and close-set. 
Female. Similar to the male, and horns equally long or longer. 
Hab. Southern Arabia, to the shores of Persian Gulf. 
As we have already pointed out, it is highly probable, if not certain, that 
the Antilope leucoryx of Pallas and his immediate successors was the present 
species and not the preceding, which, however, is now universally known as 
“The Leucoryx.” In the description of his Antilope leucoryx (which forms 
the sixteenth species in his second memoir on the genus Antilope published 
in 1777) Pallas affords us so little information that not much can be made 
