COMMON FORMS OF INSECTS 



61 



stout and rather short. 

 The outer wings are 

 hard and fit like a 

 shield over the under 

 wings, which are effi- 

 cient organs of flight. 

 The mouth parts, pro- 

 vided with an upper 

 and lower lip, are fitted 

 for biting. They con- 

 sist of heavy curved 

 pincher-shaped mandi- 

 bles (man-di-b'l), which 

 are provided with palpi 



A water scorpion. Why is it classified as a member of 

 Hemiptera ? 



(pal'pi), organs of taste and smell. 



Practical Exercise 1. Look up in a reference book the names of other orders 

 of insects than those that have already been given. Give examples of insects 

 in each of these orders. 



C. Clarke 

 A June beetle lighting on a grape leaf and folding his wings under his brown wing covers. 



