278 TJtfGTOATA. 



much larger than the outer. One instance is known of the occur- 

 rence of three lower incisors 1 . 



The writer agrees with Boyd-Dawkins 2 in regarding the large 

 fossil European Hippopotamus (of which the proper designation is 

 H. antiquus) merely as a race of H. amphibius, from which it 

 presents no structural differences. The large fossil teeth from Nubia 

 noticed below (No. 40855) were referred by Falconer to the existing 

 species, but are equal in size to the largest European fossil specimens 

 of the so-called H. antiquus. 



Hob. Europe (Upper Pliocene and Pleistocene) and Africa 

 (Pleistocene and Recent). 



Fig. 37. 



Hippopotamus amphibius.CT&mwa. and mandible. Recent, Africa. 

 Much reduced. 



1 Vide ' Palaontologia Indica,' ser. 10, vol. iii. p. 37. 



2 Quart. Journ. Geol. Soc. TO!, xli. p. 8 (1885). 



