ILLUSTEATIONS. 



PAGE 



Slave-making Ant 12 



Ant-nest, with Underground Passages 18 



Larva, Cocoon, and Pupse of Red Ant 20 



Front View of Red Ant's Head, showing An- 

 tennae and Mandibles 26 



Honey-sac and Stomach of Red Ant 27 



Ants attacking Larva 32 



External Anatomy of Red Ant 36 



Nervous System of Red Ant 36 



Queen of Slave-making Ants 45 



Excavating an Ant-hill 73 



Soldier 76 



1. Worker Major; 2. Outline of Head of 

 Worker Major; 3. Outline of Body of 



Worker Minor 81 



Queen : Side View, showing Peculiar Confor- 

 mation of the Thorax 83 



Mandibles of the Harvesting- Ant . . .88 



