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 (Eciton hamata] 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 



