192 ON STRIDULATION IN CERTAIN LEPIDOPTERA. [Mar. 1, 



Fig. 4. 



Patula and Argiva. J . 

 Hind wing. 



Fig. 5, 



Patula macrops. cJ • 

 Hind wing. 



Fig. 6. 



Argiva hieroglyphica. S • 

 Hind wing. 



