14 



INJURIOUS IKSECTS. 



Order VII.— NEUROPTERA.— JSTbrve-wistged 

 Insects. 



This Order takes in the Dragon-flies, Lace-wings, 

 White-ants, etc. The veins in the wings of these insects 



are so numerous, that 

 they look like net- 

 work, and give the 

 name, from Neuron, 

 nerve, to the Order, 

 These insects do no 

 harm, with the excep- 



Fig. 10.-AQUATIC LABYA OF DEAGON-FLT. ^-^^^ WhitC-autS, 



and Book-lice. Some are quite beneficial to man, both 

 in the larval and winged states. The larvae of the 

 Dragon-flies are aquatic, and exceedingly voracious; they 



Fi^, 11, — DRAGON-FLY. 



prey upon the larvae of Mosquitoes, and in the perfect 

 insects destroy vast numbers of winged Mosquitoes. 



