PIGS 273 



recognizable in Africa, the bright sorrel-red species of West 

 Africa, called porcus, and the variegated species of eastern 

 Africa and Madagascar, named by Desmoulins koiropota- 

 mus, a name usually corrected to choeropotamus. Vari- 

 ous geographical races have been described of the latter 

 species, but none of them can be said to be more than pro- 

 visional, owing to the small number of specimens upon which 

 they have been founded and the great variability in color- 

 ation and skull shape to which bush pigs are subject. The 

 accumulation of further material will no doubt show the 

 limits of individual and sexual variation in structure and 

 coloration and lead to the establishment of some of the 

 races now considered synonymous with the older de- 

 scribed ones. The territory covered by the present work 

 is inhabited by two recognizable forms: an East African, 

 dcemonis, and an Abyssinian and Nile race, hassama. 



Key to the Races of koiropotamus 



Adult boar coloration a mixture of black and white on body and legs; 

 hair long and abundant; bony process projecting 

 above canine tooth long and knobbed, reaching the 

 level of the nasal bones; body size larger, skull length 

 more than 13 inches dcemonis 



Adult boar coloration uniform black on the sides of the body and the 

 under-parts, and not showing mixture with white; 

 hair short, on the sides scanty, allowing the black skin 

 to appear; bony process above canine tooth short, 

 only reaching half-way to the level of the nasal bones; 

 body size smaller, skull length less than 13 inches 



hassama 



East African Bush Pig 



Potamochcerus koiropotamus dcemonis 



Native Names: Swahili, ngruwe ; Luganda, embizi. 



Potamochcerus choeropotamus dcsmonis Major, 1897, Proc. Zool. Soc, p. 367. 



Range. — German East Africa northward through Brit- 

 ish East Africa to the Tana River and Mount Kenia, and 

 through Uganda as far as the highlands east of Nimule. 



Doctor Forsyth Major, in 1897, in his monographic re- 



