206 NATURE-STUDY REVIEW [10:6— Sept., 1914 



(The teacher should place on the board the accompanying 

 diagram of the cricket's wing, showing the scraper and file. After 

 this is explained, the pupil should again observe the cricket musi- 

 cian to see, if possible, how he draws the scraper of one wing across 

 the file of the other.) 



4. Look at the front legs of the crickets, and notice a little 

 white spot placed near the elbow. This is the cricket's ear. 



5. Do both the father and mother crickets have ears? 



6. Are there any other insects that have ears in their elbows? 

 (The long-homed grasshoppers and the katydids also hear in 



this peculiar manner.) 



7. Place a bit of melon rind, or a piece of sweet apple in the 

 cage, and describe how the crickets eat it. Do the jaws act side- 

 wise, or up and down like ours? 



8. Can you see the two pairs of little feelers connected with the 

 mouth ; how are these used when the cricket is eating ? 



9. How does the cricket use its long antennae? How does it 

 keep them clean? 



(The antennae are used for examining everything in the immedi- 

 ate vicinity of the insect, and it may be seen nibbling antennae 

 from base to tip to keep them clean.) 



10. Where do the black crickets live ? 



(They have their homes in the fields and lawns ; they live under 

 sticks and stones and clods, where they can get tender grass.) 



1 1 . How does the cricket escape from his enemies ? 



(It is as smooth as patent leather, and therefore difficult to seize. 

 It has long, strong hindlegs, and can jump high and far, when 

 chased by the enemy.) 



12. How can you distinguish the father from the mother 

 cricket? (The mother crickets' wings are not fitted for making 

 music and she has a long bayonet-shaped ovipositor at the end of 

 her body which is used to puncture a hole in the soil, and to place 

 the eggs within this hole where they will be safe during the winter, 

 and hatch into little crickets in the spring.) 



