A FOREIGN INVASION OF ENGLAND 301 



engage themselves. The pupa covering is propped 

 as before by the empty leg-shells so as to form a 

 bracket. 



In No. 10 hurrah ! with a supreme effort, our 

 fly has got her antennae free ! She can move them 



NO. 9. AND THE FLY COMES OUT OF IT. 



to and fro now, in all their jointed and tufted glory. 

 That enables her to wag her head in either direc- 

 tion without difficulty, and encourages her to go 

 on to fresh exertions for the rest of the deliverance. 

 But her feet are still fast in that hampering mummy- 

 case ; she must try her hardest now to free them 

 each carefully. 



