THE INTELLIGENCE OF ' 'THE LOWER ANIMALS' ' . 83 



PLATE III 



Fig 1. A Polyergus (Polyergus bicolor Wasm.) (Original.) 



Fig. 2. Head and Mandibles of a 

 Formica seen from Below. 

 (Original.) 



Fig. 3. Head and Mandibles of a 

 Polyergus seen from Below. 

 (Original.) 



Fig 4. Lower Lip of a Formica 

 (labium). (Wasemann.) (a = 

 labial palpi ; b = ligula; c = 

 paraglossze.) 



Pig. 5. Lower Lip of a Polyergus- 



(Wasmann.) a == labia 1 palpi I 

 = ligula; c = paraglossse.) 



