ORYGIN^ 149 



exception of brownish tuft (when present), and under-parts 

 white ; occasionally a blackish area at base of backs of ears, 

 a black patch on lower border of cheeks adjacent to neck, 

 and another between throat and shoulders ; a brownish tinge 

 on part of fore-legs, a knee-cap and line round fore and hind 

 lateral hoofs brown. Basal length of skull about 12 inches, 

 maximum breadth 5 j, length from muzzle to orbit 8| inches. 

 Fine horns measure from 32 to 39^ inches along curve, and 

 from 27 to 34^ in a straight line, with a basal girth of from 

 5^ to 6f , and a tip-to-tip interval of from 13 to 28^ inches. 

 Eange co-extensive with that of genus. 



A.— Addax nasomaculatus nasomaculatus. 



Typical locality probably Senegambia. 

 General characters of the species. 



639, d. Imperfect skull and horns, with skin attached ; 

 immature female. Type of Antilope nasomaculata and 

 A. mytilopes, but not of the genus Addax. Originally in 

 Bullock's Museum, London, and stated by Hamilton Smith 

 to have been obtained probably from Guinea, or at any rate 

 Western Africa ; the true locality being probably Sene- 

 gambia. Purchased at the sale of Bullock's Museum, 1819. 

 639, 1). Skin, mounted, female. North Africa, probably 

 Senegambia. Presented hj the Earl of Derhy, ahout 1846. 

 639, h^. Skin, mounted, immature. Same locality. 



Same history, 

 639, c and c. Skin and skeleton, the latter mounted. 

 N. Africa. Purchased (Zoological Society). 



639, a. Two horns. North-west Africa. 



Presented hy Lieut. -Col. Denham and Capt. 

 Clapperton, R.N., about 1826. 

 99. 3. 19. 1. Frontlet and horns. Algerian Sahara. 



Presented hy J. Rowland Ward, Esq., 1899. 

 99. 1. 2. 1. Skin, mounted. Tunisian Sahara. 



Presented hy J. I. S. Whitakcr, Esq., 1899. 



