414 EXTINCT AND VANISHING MAMMALS 



"The range is unchanged, and there are no data to indicate whether 

 present-day numbers reveal a marked reduction. It is possible 

 that formerly 250 to 300 of these prehistoric monsters roamed this 

 locality. 



"Between ten and thirty years ago it is unquestionable that 

 numerous white rhinoceros were slaughtered by the natives to meet 

 the ever-increasing demands of the Far East for rhinoceros horns 

 .... To a far lesser extent examples were sometimes hunted by 

 the natives for meat. 



"The white rhinoceros . . . enjoys complete protection and not 

 even a Governor's permit is granted to collect specimens for scien- 

 tific purposes. For nearly ten years this species has enjoyed absolute 

 immunity from molestation, and the measures adopted for its pro- 

 tection have proved most effective." (Game Warden, Uganda, in 

 litt., December, 1936.) 



Order ARTIODACTYLA : Even-toed Ungulates 



Family HIPPOPOTAMIDAE: Hippopotamuses 



This family consists of two genera (Choeropsis and Hippopot- 

 amus), with one species in each. The latter, however, is divided into 

 five subspecies. The various forms are widely distributed over 

 Africa south of the Sahara. All are treated in the following pages. 



Northern Hippopotamus 



HIPPOPOTAMUS AMPHIBIUS AMPHIBIUS Linnaeus 



Hippopotamus amphibius Linnaeus, Syst. Naturae, ed. 10, vol. 1, p. 74, 1758. 

 (Nile River, Egypt.) 



Cape Hippopotamus 



HIPPOPOTAMUS AMPHIBIUS CAPENSIS Desmoulins 



Hippopotamus capensis Desmoulins, Dictionn. Classique Hist. Nat., vol. 8, 

 p. 222, 1825. (Lower Berg River, western Cape of Good Hope.) 



Angola Hippopotamus 



HIPPOPOTAMUS AMPHIBIUS CONSTRICTUS Miller 



Hippopotamus constrictus Miller, Smithsonian Misc. Coll., vol. 54, no. 7, p. 1, 

 pis. 1-4, July 1924. (Angola.) 



East African Hippopotamus 



HIPPOPOTAMUS AMPHIBIUS KIBOKO Heller 



Hippopotamus amphibius kiboko Heller, Smithsonian Misc. Coll., vol. 61, 

 no. 22, p. 1, Jan. 26, 1914. (Lake Naivasha, Kenya Colony.) 



