﻿58 



FIRST BOOK OF ZOOLOGY. 



55. Thus far we have learned tliat an insect propej^ or 

 true insect^ has the body divided into three parts or regions, 

 called the head, the thorax, and the abdomen. 



Let the pupil take a dead fly, and first pull off carefully 

 the legs and wings, and afterward separate the head from 

 the thorax, and the thorax from the abdomen. Having 

 separated the parts in this way, they may be pasted to a card 

 in this manner, writing the correct name beside each part, or 

 region, as shown in Fig. 58. 



(fin ^/7 . 



|j(r/- C/ noiaa:. 



CM- tJ<///aom€n . 



Fig. 58.— Card, with Eegions of an Insect glued to it, and marked. 



The principal parts of the head are the mouth-parts, com- 

 pound eyes, simple eyes, and antennae. 



56. In studying the thorax, the pupil may select some 

 common insect (a large fly, or a bee, will answer the pur- 

 pose), and pull off the head and abdomen. A common 

 house-fly separated in this way may be stuck upon a card. 

 By experimenting with a number of insects in this manner, 

 the pupil will soon learn that insects not only have the body 

 divided into three sections, but that the thorax invariably 

 has attached to it the legs and wings — the legs being at- 



