14 



IN-JUKIOUS IKSECTS. 



Order VII.— NEUROPTEEA.— Nerve-winged 



l2>rSECTS. 



This Order takes in the Dragon-flies, Lace-wing^ 

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



are so numerous, that 

 they look Hke net- 

 work, and give the 

 name, from Neuron. 

 nerve, to the Order. 

 These insects do no 

 harm, with the exceij- 



Hg. lO.-AQUATIO LABVA OF DBAGON-FLT. ^-^^^ ^f -White-antS, 



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 



^S^fi^ 







Fig. U.— DRAQON-FLT. 



prey upon the larva of Mosquitoes, and in the perfect 

 insects destroy vast numbers of winged Mosquitoes. 



