27 



of this family. The ZEBRAS, ASSES, Quaggas, and similar 

 forms, are of them. Though there is no living American 

 horse, there are numerous species found among the fossil 

 remains in the United States. 



GROUP 21, — Family Hip pa pa t« midvc , the HIPPOPOTA- 

 MUS. One genus with two species form this family. The 

 well-known animal of the River Nile is the representative. 

 Eight extinct species are known by their remains dis- 

 covered in Europe. 



GROUP •>•».— Family Suidce, the Hogs'. This family 

 includes five genera with twenty-two species. The Wild 

 BOAR (Sits scrofd) is native in Europe and there abounds. 

 The PECCARY (Dicotylcs torquatus), inhabiting South 

 America, is singularly fierce, though its size is not more 

 than that of a half-grown hog, yet the great carnivores of 

 South America find in it a dangerous enemy. 



Babirussa. 



From D. Appleton * Co.'s •• Elements or Zoology. Science Series." 



The Babirussa and Phacocilerus, or Wart-Hog, 



extraordinary looking creatures, inhabit the East Indies 

 and Africa respectively. 



GROUP 23.— Family Camelidce, the CAMELS. Of 

 this family there are six species embraced in two genera. 



