36 I.Kssoxs IN ACHK ULTUBE 



This is an injurious order of insects, and the kero- 

 sene emulsion spray is tin- moans of combating in most 

 cases. 



LESSON IX 



5. THE DRAGON FLY 



Both dragon and damsel flies will have to be caught 

 with a net. They are usually seen flying about ponds 

 or streams of water. 



1. Answer the following questions from the observa- 

 tion of a living specimen: 



(a) What is their habit of flight? 



(b) What is their food? 



le-^w ( c ) How do the dragon fly and damsel fly differ 



in habits? 

 "*-* 



(d) What is the position of the wings at rest? 



2. After killing the dragon fly in the cyanide bottle, 

 straighten its wings and legs and draw the whole body 

 view. 



3. How do the legs compare with those of the grass- 

 hopper ? 



4. How many wings are there? Write a descrip- 

 tive sentence about them. 



5. Note the enormous development of the eyes. 

 What would this indicate as to their habit of life ? 

 Find the three simple eyes, and tell where they are 

 located. 



6. Write a descriptive sentence about the abdomen. 

 How many segments? 



