386 CATALOGUE OF UNGULATES 



G.— Dicotyles angulatus nanus. 



Tayassu nanus, Merriam, Proc. Biol. Soc. Washington, vol. xiv, 

 p. 102, 1901. 



Tagassu nanus, Elliot, Mamm. Mid. Amer. and W. Indies (Field 

 Mus. Zool. Pub. vol. iv), p. 62, 1904. 



Pecari nanus, Miller, List N. Amer. Mamm. p. 384, 1912. 



Typical locality Cozumel Island, off Yucatan. 



Type in U.S. National Museum, Washington. 



A dwarf island-race, characterised by its grizzled black 

 and buff general colour, dark dorsal stripe, and wide huffish 

 shoulder-stripe. 



No specimen in collection. 



Family II.— HIPPOPOTAMIDiE. 



Head terminating in a broad, rounded muzzle, at the 

 summit of which are the nostrils ; feet four-toed, with the 

 middle pair, at least, connected by membrane, and all four 

 touching the ground in the ordinary standing posture ; 

 incisors and canines growing from persistent pulps, the 

 upper curved and directed downwards, the lower incisors 

 straight and procumbent, and the canines curved and directed 

 upwards ; molars with trefoil-shaped dentine islands (fig. 55) ; 

 a descending flange to hind part of mandible, and lateral 

 aspect of gape S-shaped. 



Eestricted at the present day to Ethiopian Africa, but in 

 the Pleistocene and Pliocene spread over a large part of the 

 Old World, including England. 



I. Genus HIPPOPOTAMUS. 



Hippopotamus, Linn. Syst. Nat. ed. 10, vol. i, p. 74, 1758, ed. 12, 

 vol. i, p. 101, 1766 ; Oiehel, Sdugethiere, p. 217, 1855 ; Gray, Cat. 

 Carnivora, etc. Brit, Mus. p. 356, 1869 ; LydeJdcer, Pal. Indica 

 (Mem. Oeol. Surv. India), ser. 10, vol. iii, p. 47, 1884, Cat. Foss. 

 Mamm. Brit. Mus. pt. ii, p. 277, 1885, Game Animals of Africa, 

 p. 403, 1908 ; W. L. Sclater, Fauna 8. Africa, Mamm.. vol. i, 

 p. 269, 1900; Anderson and de Winton, Mamm, Egypt, p. 356, 

 1902. 



