ENTOMOLOGY. 



385 



wings are occasionally folded. Head usually with jaws, but 

 these are sometimes absent, as in the May-flies, which, only 

 living for a short time, do not require apparatus for feeding 

 with. Abdomen generally long and slender. 



1, Golden-eye, Chryttopa perla; 2, eggs of Chri/sopa; 3 and 4, larva; 

 5 and 0, cocoon, nat. size and magnified. 



Larvae with six legs ; pupao various, in some cases active, and 

 somewhat resembling the perfect insect ; in others inactive, 

 with the limbs folded beneath them. 



The famihes of the Dragon-flies (LihelluUda), Stone-flies 

 {Perlidce), and May-flies (Ephemeridce), pass their first stages 

 in the water, and have active pupae as well as larvae. 



HemcrohiidcB (see C. perla, figured above) are pecuhar in 

 laying eggs fixed by a long stalk of a viscid secretion; the 

 larvae feed ravenously on Aphides. In the eleven families of 

 which Neuroptera is composed, it is said that there is 

 " scarcely a leading characteristic of the Order which does not 

 meet with an exception." 



6. TEICHOPTERA (Kirby).—CADDiCE -flies. 



Mormonia nigromaculata, Caddice Fly, magnified; lines showing nat. size. 



Wings four, membranous, the upper usually with branch- 

 ing nerves, and *' hairy'' ; the under pair shorter and broader, 



2 c 



