EAST AFRICAN MAMMALS IN NATIONAL MUSEUM. 133 
Order PERISSODACTYLA. 
Family EQUIDE. 
Genus EQUUS Linnzus. 
1758. Equus Linnzvs, Syst. Nat., ed. 10, vol. 1, p. 73. (E. caballus.) 
1762, Equus Brisson, Regn. Anim., ed. 2, p. 12. (£. caballus.) 
1841. Hippotigris Hamiron Smita, Jardine’s Nat. Libr., Mamm., vol. 12, p. 321, 
(E. zebra.) 
1912. Megacephalon HinzHEetmer, Abh. Senckenberg. Nat. Ges., vol. 31, p. 95. 
(E. grevyi; not of Temminck, 1844, Gray, 1846.) 
1912. Dolichohippus HevieR, Smithsonian Misc. Coll., vol. 60, No. 8, p. 1. 
November 2. (E. grevyi.) 
1913. Ludolphozecora Grir¥int, Atti Soc. Italiana Sci. Nat. Mus. Milano, vol. 51, 
p. 382. March. (E£. grevyi; pro Megacephalon Hilzheimer.) 
The common quagga-zebra group and the Grevy zebra group have 
both been recognized as full genera by various authors, but there 
does not seem to be valid reason for their exclusion from the genus 
Equus. If it is desirable to divide the genus into subgenera, then I 
should recognize both Hippotigris and Dolichohippus as such, giving 
them equal rank with Asinus and typical Equus. 
EQUUS GREVYI GREVYI Oustalet. 
1882, Equus grevyi OusTaLeT, La Nature, vol. 10, pt. 2, p. 12. June 3. (Abys- 
sinia; based on living example in Jardin des Plantes, Paris.) 
1898. E[quus] fawrei Matscuir, Sitz.-ber. Ges. nat. Freunde Berlin, p. 170. 
November. (Abyssinia.) 
1910. Equus grevyi Rooseve t, African Game Trails, Amer. ed., p. 474; London 
ed., p. 486. 
1912. Dolichohippus grevyi HELLER, Smithsonian Misc. Coll., vol. 60, No. 8, p. 1. 
November 2. 
1914. Dolichohippus grevyi Roosevett AND HE .teEr, Life-Hist. African Game 
Anim., vol. 2, p. 700. 
1915. Equus grevyt Hay, Proc. U. 8S. Nat. Mus., vol. 48, p. 554. April 8. 
Specimens.—Nineteen, from the following localities: 
ABYSSINIA: “Abyssinia,” 2, including one complete skeleton 
(Menelik, Bureau of Animal Industry); Arussi, 1 (Makonnen). 
British Kast Arrica: Archer’s Post, 2 (Rainey) ; Lakiundu River, 
2 (Rainey); Longaya Water, Marsabit Road, 1 (Rainey); Northern 
Guaso Nyiro River, 11, including three odd skulls (K. Roosevelt, 
T. Roosevelt). 
A subspecies of Equus grevyi from Somaliland, E. g. berberensis, 
has been described by Pocock.' No specimens representing this form 
are in the collection. 
One of the Abyssinian specimens listed above was presented to 
President Roosevelt by Emperor Menelik of Abyssinia in 1904 and 
1 Ann. and Mag. Nat. Hist., ser. 7, vol. 10, p. 308. October, 1902. 
