THE INTEREST IN IXSECTS 



403 



THE COMMON ROUND-WINGED KATYDID. 

 Some recent ingenious and painstaking work in motion pictures has brought to our eyes the mys- 

 terious activities of insects in a way we should never have thought possible. _ 



The katydid "sings" by rubbing together the overlapping glassy parts of the wings just back of 



the head. _ . „, T , „ „ , r , _. 



Cut by courtesy of 'The American Museum Journal, New 1 ork City. 



