ORDER NEUROPTERA. 



85 



they also differ in important respects from net- veined insects 

 without a complete metamorphosis. The head is horizon- 

 tal and somewhat flattened; the body is flattened or cylin- 

 drical. The mouth-parts are free, adapted for biting, and 

 the mandibles well developed. The ligula differs from 

 that of the other net- veined insects in being entire, forrn- 



FIGS. 74, 75. Larva and pupa (b) of Corydalis cornutus. Natural size. 



ing a large, broad, flat, rounded lobe. The prothorax is 

 large, broad, and square, and the mesothorax and meta- 

 thorax are nearly of the same size, while the wings corre- 

 spond in being all of the same size; they are not so decidedly 

 net-veined as in the Orthoptera, Platyptera, Odonata, and 

 Plectoptera, the costal space being wide, while the trans- 



