28 I.KSSONS i\ .\(!KK ri/rn;i: 



answer such questions as arc asked in tlic lesson out- 

 lines. Determine all answers from observation. 



1. Observe in the field: 

 Its method of locomotion. 

 Its protective coloration. 



Its enemies. Its sounds. Its haunts. Its food. 



2. With the living insect, try to find the breathing 

 spiracle, just above the base of the middle legs. Watch 

 the opening and closing of the lips of this breathing 

 pore. Put a grasshopper under a glass and see if it 



J-HB 



KIO. 9. DIFFERENTIAL LOCUST AFTER SANDERSON 



will eat' grass or leaves. Perhaps it has spit "tobacco 

 juice" on you. Why does it do this? . How many times 

 the length of its body can it jump ? 



3. In what ways do the hind pair of legs differ from 

 the others? 



Of what advantage are the hooks and spines on 

 the legs? 



Count the number of joints on each leg. 



4. Study the wings. How does the front pair com- 

 pare with the hind pair? How are the hind wings 

 folded? By rubbing the upper and lower wings to- 

 gether, the grasshopper sounds are made. Make a 

 drawing of the wings. 



