104 



THE FOOD OF ANIMALS 



Driver-Ants are blind and do most of their hunting at night. 

 Bates (in The Naturalist on the River Amazons) has graphically 

 described the somewhat similar habits of certain South American 



Fig. 383. — Foraging- Ants [Ecitoii hamnta) on the march 



Foraging-Ants belonging to the genus Eciton (fig. 383). As 

 in so many other insect communities there are here not only 

 males and females but also " workers ", in this case of two kinds, 

 large - heads and small - heads, the former being possessed of 

 particularly powerful mandibles, styled simply "jaws" in most 



