SEPTEMBER 



45 



How do they see ? How do they breathe ? How do 

 they sing? 



The life history may be taught by means of hektograph 

 drawings, or it may be left until late spring; at which 

 time it is possible 

 to obtain living 

 material. 



To the same 

 order belong the 

 crickets and katy- 

 dids. The main 

 difference be- 

 tween crickets 

 and locusts is in 

 the legs, the 

 sound-making ap- 

 paratus, and the 

 ovipositors. The 

 katydids are 

 green in color, 

 live in trees, and have longer antennae and ovipositors. 



Because the children may bring in specimens of dragon 

 flies and cicadas (commonly and incorrectly called locusts), 

 the following facts are given with reference to them. 



Dragox Flies : 



The adult dragon fly has a large head with large, 

 brilliant, gemlike eyes. The head moves very freely in 

 every direction, as indeed it must to see and catch its 

 food, the lively mosquito. 



The wings are nearly equal in size and texture, deli- 

 cate, beautiful in color, often with a metallic lustre. 



The long slender abdomen is chiefly used in steering. 



1. Mr. Cricket. 



2. Mrs. Cricket. C Egg placer. 

 Sounding apparatus. 



