EAST AFRICAN MAMMALS IN NATIONAL MUSEUM. 55 
Family HIPPOPOTAMIDA. 
Genus HIPPOPOTAMUS Linnzus. 
1758. Hippopotamus Linnxvs, Syst. Nat., ed. 10, vol. 1, p. 74. (H. amphibius.) 
1815. Hippotamus Rarinesque, Anal. Nat., p. 56. (pro Hippopotamus.) 
1836. Tetraprotodon FALCONER AND CAUTLEY, Asiatic Research, Calcutta, vol. 
19, p. 51. (H. amphibius.) 
An excellent series of specimens of the East African hippopotamus 
was brought home by the Smithsonian African Expedition, and 
skulls of the Nile subspecies were collected by the Rainey Expedition 
at Victoria Nyanza. 
For measurements of specimens see page 56. 
HIPPOPOTAMUS AMPHIBIUS AMPHIBIUS Linneus. 
1758. Hippopotamus amphibius Linnwus, Syst. Nat., ed. 10, vol. 1, p. 74. (River 
Nile.) 
1914. Hippopotamus amphibius amphibius Roosrvett AND He.ier, Life-Hist. 
African Game Anim., vol. 1, p. 297. 
Specomens.—Four, as follows: 
British East Arrica: Kisumu, Kavirondo Gulf, 4 skulls (Heller). 
HIPPOPOTAMUS AMPHIBIUS KIBOKO Heller. 
Plates 20, 21. 
1910. Hippopotamus amphibius Roosrvext, African Game Trails, Amer. ed., p. 
474; London ed., p. 486. (Not of Linnzeus.) 
1914. Hippopotamus amphibius kiboko Heiter, Smithsonian Misc. Coll., vol. 61, 
No. 22, p. 1. January 26. (Lake Naivasha, British East Africa; type 
in U. S. National Museum.) 
1914. Hippopotamus amphibius kiboko Roosrvetr and Heuer, Life-Hist. 
African Game Anim., vol. 1, p. 298. 
Specimens.—Nine, as follows: 
British East Arrica: Juja Farm, 1 skin and skull (T. Roose- 
velt); Lake Naivasha, 8 skulls, 4 with skins and 4 with skeletons 
(T. Roosevelt, K. Roosevelt, Mearns, Heller). 
Colonel Roosevelt has recorded the weight of the female hippo- 
potamus from the Rewero River, Juja Farm, as nearly 2,800 pounds, 
which, he says, is a “good size for one dwelling in a small river, 
where they never approach the dimensions of those making their 
homes in a great lake like the Victoria Nyanza.” A big lake bull 
would weigh, he believed, between three and four tons. He writes 
further: 
In wild regions hippos rest on sandy bars, and even come ashore to feed, by day; 
but wherever there are inhabitants they land to feed only at night. Those in the 
Rewero continually entered McMillan’s garden. Where they are numerous they 
sometimes attack small boats and kill the people in them; and where they are so 
1 African Game Trails, p. 123. 1910. 
