CHAP. IX. DESCRIPTION OF THE ORDER OF INSECTS. 



47 



with the insects defend themselves. Some females have an 

 exserted ovipositor (Fig. 129), with which they puncture the 

 leaves or twigs of plants in which they deposit thprf x eggs ; 



Fig. 1U. 



Fig. 135. 



Fig. 136. 



others, such as the Ichneumon-flies (Figs. 39, 40, 131, and 

 134), puncture the bodies or eggs of other insects, and deposit 

 their eggs therein. The larva? are usually destitute of legs, 

 (see larva of the Grape-seed Maggot, Fig. 135), and many of 

 them feed upon food provided by the parents; others are pro- 

 Fig. 137. 



vided with twenty or twenty-two legs (such as the larva of the 

 Rose Saw-fly, Fig, 136), and feed upon the leaves of plants, or 

 live in the stems of plants, or in galls on plants. 



