STRUCTURE OF A LARVA. 



91 



became butterflies ? yet they all belong to that 

 tribe of insects. 



In order to give a clear conception of the 

 structure of a larva, we may briefly mention the 

 names of its various parts. First then, there is 

 a head of various shapes, sometimes of the shape 

 of a heart, sometimes round or triangular. At- 

 tached to the head are the two antennae ; or, as 

 they are commonly called, feelers, most probably 

 an incorrect expression, as it appears that insects 

 may possibly hear as well as feel by their means. 

 At the side of the head are the 

 eyes, which are formed much more 

 simply than those of the per- 

 fect insect. Next is the mouth, 

 provided with its upper and lower 

 pair of jaws. Then there is the 

 body and its legs; and lastly, there 

 is in many Iarva3, living in the 

 water, a tail, which, strange to 

 say, is provided with a delicate 

 tube, through which the larva 

 breathes. A beautiful instance of 

 such an appendage to the body 

 of the larva, is represented in the adjoining cut ; 



