HEMIPTERA. 479 



study of them, and has recorded his observations in the Entomological 

 Magazine. There would appear to be a large number of species, as 

 as he has divided them into sixteen 

 genera. At my garden ferns kept in 

 too warm an atmosphere specially 

 suffer from their ravages. Tobacco 



FIG. 1057. Larva Thrip, magnified. FIG. 1058. Winged Thrip, magnified. 



smoke appears to kill them, but the best remedy is to place the plant 

 out of doors during the summer season. Fig. 1057 shows the larva 

 thrip, and fig. 1058 the thrip in the mature or winged state. 



NEUROPTERA. 



The Fifth order, Neuroptera, includes the Dragon-flies, Lace-wings, 

 and May-flies. These have jaws, four netted wings, and have no 

 sting. Most of the creatures comprised in this order are of service to 

 the gardener, and some are useful as providing food for our trout. 



We have but few of the larger Dragon-flies as compared, for 

 instance, with the number which inhabit Epping Forest. It is highly 

 interesting to watch them hawking for flies in the glades, and, when 

 tired, fixing themselves upon the top of a branch to repose for the 

 night. They are very voracious, and eat large quantities of flies, thus 

 doing us some good. 



We have not a great number of the small green Dragon-flies ; never- 

 theless some are to be observed near the lake every year. 



A very beautiful creature, called the Chrysoma pcrla (fig. 1059), with 

 green gauze wings and sparkling eyes, is very useful to the gardener 

 on account of the number of aphides it devours. The larva of this 

 creature (fig. 1060) is to be found on nearly every leaf infested with 

 aphides, and it destroys incredible quantities. 



In a division of the order Neuroptera, and separated into the sub- 



