NEUROPTERA. 419 
Tt is still enveloped in a very thin skin, of which a last moult, 



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Fig. 390.—Larva of an Ephemera. Fig. 391.—Pupa of an Ephemera. 
uter a few hours, frees it, This skin remains sticking to the 
slant on which the moulting was 
ttected, preserving the shape of the 
sect. This moult is peculiar to the 
Ephemere ; it is the transition from 
he false imago :( pseudo-imago) to 
he imago. 

In the same family is the genus 
loélon whose larvze prey on minute 
msects. The Cloéon diptera (Fig. 
92), which has only two wings, is 
‘ften to be met with in houses, 
esting on the window panes and 
jurtains. All these insects keep 
yadly in collections; they lose their 
fhape, and their members are so 
tagile that the least shock suffices 
0 break them. 
The Libellulas, or Dragon-flies, Fig. 392.—Cloton diptera. 
re insects of a well-defined type. The elegance of their shape, 
EE 2| 


