CRICKETS AND EARWIGS 



161 



be fastened down, but simply pressed back. Now comes 

 the most difficult part of all. The long smoky part 

 which occupies the whole of one side of the wing, as 

 it is now displayed, consists of a thin membrane 

 strengthened by leathery rays, and arranged in a 

 number of longitudinal folds; and the whole is bent 



.-c 



FIG. 51. Tour stages in unfolding Earwig's Left Wing. The small letters 

 represent the same parts in all the figures. Magnified six diameters. 



back upon that part of the wing that is attached to 

 the card at the end opposite to the position of the 

 former hinge. It may be lifted at d, and as it is raised 

 the membrane gradually opens itself out in all directions. 

 The outer edge may be gently pushed back on to the 

 card, on which another small supply of gum has just 

 been spread; and if care be taken to keep the narrow 



L 



