388 



CATALOGUE OF UNGULATES 



Hippopotamus (Tetraprotodon) amphibius, Falconer. Journ. Ac. Sci. 

 Philad. ser. 2, vol. i, p. 237, 1849, Pal. Mem. vol. ii, p. 405, 1868. 



Hippopotamus senegalensis, Falconer, Journ. Ac. Sci. Philad. ser. 2, 

 vol. i, p. 237, 1849 ; Gray, Cat. Carnivora, etc. Brit. Mus. p. 357, 

 1869 : quoted but not recognised as a species, as if from 

 Desmoulins, Journ. Physiol. vol. v, p. 354, 1825, where, however, 

 according to Miller (1910), no such name was given. 



Typical locality Nile Valley. 



Size very large length of head and body about 14 feet ; 

 two pairs of incisors in each jaw, the inner pair in lower jaw 



FIG. 55. PALATAL ASPECT OP SKDLL AND LOWER JAW OF HIPPOPOTAMUS 

 (Hippopotamus amphibius). 



much larger than the outer; neck very short and line of 

 back but little arched ; skin, with the exception of bristles 

 on the muzzle and tail, nearly naked, and forming heavy 

 folds on neck, shoulders, and sides of chest. 



The distributional area formerly included suitable locali- 



