CHAPTER IV. 
Legs and Wings. 
The legs of insects are jointed. Every joint has 
its own special name, and since these are not hard 
to learn, they are given here. 
Beginning at the body, the 
first joint is called the coxa. 
This is usually round or nearly 
so, as in outline. Next to the 
coxa is a joint which is always* 
smaller in size. It is called the 
trochanter . The third joint is 
the femur , which is followed 
by the tibia, and this in turn by 
the tarsus . These last names 
are so familiar from the study 
of physiology that it will be 
easy to remember them. There 
are always or nearly always 
hooks on the last tarsal joint. 
Catch a June-bug and see how 
he holds on with these hooks 
when one attemps to remove 
him from one place to another. 
The legs of insects serve various 
uses. They may be used for 
. .TARSUS. 
.HOOKS. 
Fig. 2.—Leg of 
Grasshopper. 
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