EAST AFRICAN MAMMALS IN NATIONAL MUSEUM. 125 
(T. Roosevelt, White, Heller); Northern Guaso Nyiro River, 13, 
including seven odd skulls’ (T. Roosevelt, Rainey, K. Roosevelt, 
Heller). 
The weight of a male from the Northern Guaso Nyiro is recorded 
as 400 pounds. 
ORYX BEISA CALLOTIS Thomas. 
1892. O[ryx] cailotis Tuomas, Nature, vol. 45, p. 526. March 31. (East Africa.) 
1892. Oryx callotis Tuomas, Proc. Zool. Soc. London, p. 195. (Neighborhood of 
Mount Kilimanjaro, British East Africa; type in British Museum.) 
1892. Oryx callotis Trug, Proc. U. 8. Nat. Museum, vol. 15, p. 470. October 26. 
1914. Oryz beisa callotis RoosEVELT AND Hewier, Life-Hist. African Game Anim., 
vol. 1, p. 346. 
Specimens.—Four, from localities as follows: 
BritisH East Arrica: Taveta, 3, including one odd skull (Abbott) ; 
Voi, 1 (Folsom). 
Genus EGOCERUS Desmarest. 
1822. Egocerus DesMAREST, Mamm., vol. 2, p. 475. (£. leucophzus.) 
1827. Aegocera BERTHOLD, Latreille’s Fam. Thierr., p. 61. (pro Egocerus.) 
1827. Aigocerus H. Smiru, Griffith’s Cuvier’s Anim. Kingd., vol. 4, p. 161; vol. 5, 
p. 324. (£. leucophxus.) 
1842. Gigocerus Lesson, Nouv. Tabl. Regne Anim., Mamm., p. 179. (pro 
Egocerus Desmarest. ) 
1845. Ozanna REIcHENBACH, Siugeth., vol. 3, p. 126. (E. niger.) 
1846. Hippotragus SuNpEVALL, K. Vet. Akad. Handl., 1844, p. 196. (2. leu- 
cophxus.) 
1846. Afgoceros SUNDEVALL, K. Vet. Akad. Handl., 1844, p. 196. (pro Egocerus.) 
1859. Agocoerus GERVAIS, Zool. et Paléont. Frang., ed. 2, p. 189. (pro Egocerus.) 
1914. Egoceros RoosEveLtt AND Heuer, Life-Hist. African Game Anim., vol. 1, 
p- 326. (pro Egocerus.) 
Two forms of the roan antelope and one form of the sable are 
known from this region. The distribution of the roan is irregular 
and broken, and the sable in East Africa is confined to small areas 
near the coast. Specimens of the roan antelope from German East 
Africa are particularly desired. 
EGOCERUS EQUINUS LANGHELDI (Matschie). 
1898. Hippotragus langheldi Marscuir, Sitz.-ber. Ges. nat. Freunde Berlin, p. 
181. (Tabora, German East Africa; Langheld coll.) 
1899. Hippotragus rufo-pallidus NeEuMANN, Proc. Zool. Soc. London, 1898, p. 850. 
(Upper part of River Bubu, about midway between Irangi and Mount 
Gurui, German East Africa.) 
1910. Ozanna equinus langheldi Roosrvetr, African Game Trails, Amer. ed., 
p. 475; London ed., p. 486. 
1914. Egoceros equinus langheldi RooseveLtT aND Hewier, Life-Hist. African 
Game Anim., vol. 1, p. 329. 
Specimens.—Nine, from the following localities: 
British East Arrica: Eldoma Ravine, 12 miles north, 3 (K. 
Roosevelt); Kabalolot Hill, 2 (Rainey); Mau Hills, 15 miles north 
of Ravine, 3 (T. Roosevelt); Sigaa, 1 (Draper). 
