NEUROPTERA : HEMEROBINI. 



4S3 



Fig. 350. 



blue, green, bronze, or red color. ^Eschna is very large, 

 and has the body cylindrical. The Hero-Dragon-Fly, ^E. 

 lieros, Fabr., is over three inches and a half long, and ex- 

 pands about five inches. Libellula has the body rather 

 flat, as seen in Fig. 348. Diplax contains mainly yellow- 

 ish, yellowish-red, or reddish species, with long and slen- 

 der feet ; some, however, are black or dark brown. 



SIALID.E, Leach, OR CORYDALIS FAMILY. This Fam- 

 ily comprises sluggish neuroptera Fig. 35 i. 

 of moderate or very great 

 size, with large heads, 

 large jaws, and square 

 thoracic rings. They fre- 

 quent the neighborhood 

 of water, in which they 

 pass the larva state. 



The Genus Corydalis 

 contains the Horned Co- 

 rydalis, C. cornuta, Linn, 

 which expands five or six 

 inches. Sialis and Chau- 

 liodes are genera con- 

 taining mainly black, ferruginous, or dark brown species. 



HEMEROBINI, Latr., OR LACE-WINGED FAMILY. This 

 Family contains very delicate-winged neuroptera, whose 

 larvae feed upon other insects, especially plant-lice. 



The Genus Hemerobius contains small brown species. 

 Polystcec/wtes resembles the preceding, but is very much 

 larger, with more acute wings. Chrysopa contains species 

 which are about half an inch long, and which expand 

 about one inch and a quarter ; wings gauze-like, greenish, 

 eyes golden. They give a fetid smell when disturbed. 

 Mantispa has the prothorax much elongated, and the for- 

 ward feet adapted to seizing prey. 



The Genus Myrmeleon contains the Ant-Lions, which in 



Larva. 



Horned Corydalis, C. cornnta of authors. 

 Reduced one half. 



