SOME SUGGESTIONS FOB THE STUDY OP INSECTS. 167 



a few embrace a large number of the commonest types. 

 We shall classify the most familiar examples. For our 

 purpose we shall confine our notes to outstanding features 



Fig. 65. Cockroach, diagrammatically displayed to illustrate the external 

 features of Insects. 



only, indicating the nature of the wings, the character of 

 the jaws as throwing light upon the nature of the food, 

 and the type of life-history as shown in the form and 

 habits of the young insect. 



Butterflies and Moths. 



We have already studied an example, but their characters 

 may be summarised here. * 



They have two pairs of scaly wings. 



Their mouth parts are adapted for sucking juices of 

 plants. 



Their young are Caterpillars. 



They belong to the order Lepidoptera (scaly winged). 



