NATUBE-STUDY LESSONS. 67 



22. (a) Raise the hard wings of the body and discover 



the membranous wings. 



(b) To what part of the beetle are these wings 



attached ? 

 {c) Describe each pair of wings. 



23. {a) Observe how the beetle flies. 

 {b) Infer the use of the hard wings. 



24. Describe the under parts of the body. 



25. Discover how the insect breathes. 



26. Draw a fully-grown beetle in various positions. 



27. Discover where the potato -beetle passes the 

 winter. 



28. (<2) Examine the mouth of a beetle. 

 {b) Infer how it eats. 



(c) Compare its mouth with that of the butterfly 



and bee. 



29. (a) From your studies of Nos. 4, 7, 10, and 12 



estimate how many broods there are during 

 the potato season. 



{b) Count the eggs in a cluster and estimate 

 how many beetles may be produced in the 

 season from one cluster of eggs laid on an 

 early potato-shoot. 



(f) To what different means have you seen potato- 

 growers resort to destroy the beetles i 



30. (a) Discover other kinds of beetles. 



(fi) Note the different habits of each kind. 

 (c) Make notes and drawings of each kind. 



