80 THE SELOUS COLLECTTOX. 



Family HIPPOPOTAMID^. 



HIPPOPOTAMUS. 



Hippopotamus amphibius ampuibius. 



Hippopotamus amphibins, Linn. Syst. Nat. ed. 10, vol. i. p. 74, 1758 ; 



ed. 12, vol. i. p. 101, 1766. 

 Hippopotamus amphihius ampliibius, Schwai-z, Ann. Mag. Nat. Hist. 



ser. 8, vol. xiii. p. 31, 1914. 



Represented in the Collection by a single skull which is 

 provisionally referred to the typical race. The cranial characters 

 that have been used in differentiating the various races of Hippo- 

 potamus are such as can only be relied upon if supported by evidence 

 from large series of specimens ; the material in the Museum Col- 

 lection is not sufficient to permit of any definite decision being 

 made. 



Typical localit}^ Nile Valley. 



424 —19. 7. 15. 504. Skull. Lower Ruenya River, 20 miles south 

 of Tette, Mozambique. 



Family EQUID^. 

 GREYY'S ZEBRA. 



EqL'US (DoLICHOHIPPUS) GREYri. 



Equus grevyi, Oustalet, La Nature, vol. x. p. 12, figs. 1 and 2, 1882. 

 DoUchohippus grevyi, Heller, Smithson. Misc. Collect, vol. Ix. no. 8, p. 1, 



1912. 

 Eqims (Dolicliohipims) grevyi, Lydekker, Cat. UngT.ilate Mamm. Brit. 



Mus. vol. V. p. 17, 1916. 



Distinguished from all the other Zebras by its much larger 

 head, the skull being elongated with a long diastema between the 

 cheek-teeth and incisors, and the greater size of the ears. Bod}^ 

 coloration consists of a series of brownish black and buff or whitish 

 stripes of almost equal width excej^t on the neck where the dark 

 stripes become broader. The stripes of the body are all transverse, 

 even those on the rmiip. 



Typical locality, Abyssinia ; i-ange extends from north bank of 

 the Tana River northwards across the Northern Guaso Nyiro as 



