PHYLUM ARTHROPODA 



633 



This order includes Earwigs, Cockroaches, Stick- 

 insects, Grasshoppers, and Locusts (Fig. 507). 



and Leaf- 



507.— Iiocusta. (Prom Cuvior's 

 Animal Ki'inidoni,) 



Fir;,508.— Ephemera (May-fly) and 

 larva. (Aftei- Gu^riu and Pcrcheron.) 



Order 3. — Neuroptera. 



Insects with two pairs of netted membranous wings. The parts 

 of the mouth are adapted for biting. The prothorax is free from 

 the other segments of the thorax. The metamorphosis is some- 

 times complete, sometimes incomplete. 



This order includes Termites (" White Ants "), May-fiies (Fig. 

 508), Dragon-flies, Ant-lions, and Caddis-flies. 



Order 4. — Hemiptera. 



Insects in which wings are usually present, sometimes similar, 

 sometimes dissimilar, and in which there is a jointed suctorial 



Fio. 509. — Aphis rossE and larva. (From Cuvier's Animal Kingdom.) 



