56 ELEMENTARY ZOOLOGY. 



of plant? What parts of the plant do they frequent? 

 Do they seem to injure the plants in any serious degree? 

 Do you ever find them in trees or the higher vegetation? 

 Do they show any disposition to hide? Do they seem 

 to have any enemies? If so, what? In what various 

 ways do they seem to be able to escape possible enemies? 



B. Variation. How many different kinds of locusts 

 are you able to find? In w r hat respects do they differ? 

 Do you think they are of different species, or merely 

 different ages of the same species? On what grounds 

 do you base your conclusion? Would the male and 

 female probably be alike? Find both (if necessary refer 

 to the books to verify your results). Make a study of 

 the color element and its variations in your species. Is 

 it general, or in pattern? 



C. Sensitiveness. Do they recognize your approach? 

 Evidences. If so, is it through hearing, or jar, or seeing, 

 or otherwise? Reasons for your view? Do they recog- 

 nize each other in any way? Describe their behavior 

 carefully, under various tests that you may be able to 

 devise, and interpret their actions. 



D. Locomotion. In what various ways do grass hoppers 

 get from place to place? Under what circumstances do 

 they use each of the different methods? How do they 

 move when disturbed? When undisturbed? Experiment 

 upon the matter? What is the more commonly used 

 method of locomotion? What organs are used in each 

 of the methods and how are they used? Describe in de- 

 tail. Just how do they climb? What position do they 

 take on the plant? How far do they usually fly? Can 

 this distance be increased appreciably? How far can 



