EXPLANATION OF PLATE 52. 



i All figure* enlarged.] 



Drawn by R. A. COOLEY. 



1. Venation of fore wing of male. 



2. " " hind " " " 



3. " " fore wing of female. 



4. " " hind " " " 



5. Base of fore wing, showing outline of the spiny area. 



6. Portion of the spiny area, showing the spines, greatly en- 



larged. 



7. Area from near the middle of the upper side of the fore 



wing of female, showing scales and hairs. 



8. External outer border of wing, showing spines and a fringe 



scale. 



9. Single blunt spine from outer border. 



10. Section of figure 19 greatly enlarged, showing spiny sur- 

 face. 



n, 12, 13, 14, 16. Various types of scales from the wings. 



15. Scale from the upper side of the fore wing of the female, 

 showing the striae. 



17, 1 8. Scales from the fringe of the fore wing. 



19. Hair from the end of the abdomen of the female. 



20. " " " " " " "' male. 



21. Section of a scale near the base. 



22. " " " " " middle. 



