Explanation of Plate 50. 



[All fienres greatly enlarged.] 



Drawn by C. P. Lounsbury. 



1. Dorsal view of male moth. 



2. Lateral view of genitalia. 



3. Ventral view of genitalia. 



4. Antenna of the male. 



5. Single filament from antenna. 



6. Section of antennal filament, showing insertion 



of the finer lateral filaments. 



