584 



ARTICULATA. 



THE PUKXGANIA STRIATA AND ITS LARV^ ; CADDICE-WORMS.- 



which the •s\-ater, neccssnry for the respiration of the pupa, can easily pass. The pupa is furnished 

 with a pair of hooked jaws, by means of which, when about to assume the perfect state, it bites 

 through the grating of its prison, and thus sets itself free in the water. In this form the pupa? of 

 some species swim freely through the water by means of their long hind-legs, also creeping upon 

 the other four limbs; they frequently rise to the surface of the water, and there undergo their 

 final change, using their deserted skin as a sort of raft from which to rise into the air, while 

 others generally creep up the stems of aquatic plants for the same purpose. 



The perfect insects have four wrings, with branched nervures, of which the anterior pair are 

 clothed with hairs; the posterior pair are folded in repose. The bead is furnished with a pair of 

 large eyes, and with three ocelli, and the antennae are generally very long. The females have 

 been observed to descend to the depth of a foot or more in water, in order to deposit their eggs. 

 The P. striata is over an inch long, of a fawn-color, with the exception of the eyes, which are 

 black. 



Many species of Phryganeidse are found in Europe, and also in America. The larvas are well 



,.. '^ '" known to anglers under the names of 



' Caddice-Worms2LU({ Straiv-Worms. They 



are said to be excellent fish-baits. 



THE PANORPID^. 



This includes the Scorpion-Fly, Pa- 

 norpa communis, a small-sized insect com- 

 monly found about hedges in damp situa- 

 ations. In England they are called Snake- 

 Flies. 



THE MYRMELEONTID^. 



These insects, called Ant-Lions, in- 

 clude several genera, which pass their lives 

 chiefly in the air when in the perfect state, 

 In some species the larvae, which are 

 small, sluggish, oval-shaped creatures, and 

 furnished with a formidable pair of jaws, 

 excavate conical pits in the sandy places 

 which they inhabit, at the bottom of 

 which they conceal themselves entirely, with the exception of the bead and jaws. Here they 



THB ANT-LION AND ITS LARVA. 



