ARTHROPODA 



III 



FIG. 67. Seventeen-year Cicada (Cicada septendecim): a, pupa; b, the same, after 

 the imago, c, has escaped through a rent in the back; d, holes in a twig, where the 

 eggs, e, are inserted. 



FIG. 68. Dragon Fly (Ltiellula). 



