Explanation of Plate XXXIII. 



17. Papilio bachns hacMis, Fekl., ,^ (under side). Peru (Kaden 

 Collection). Godman-Salvin Collection. 



Heterocera (Hypsid^). 



18. Pericopis hydra, Butl., $ . Hope Collection. 



19. Pericopis hydra, Butl., ^ (under side). Ecuador. The 

 figure represents the type of the species. iioY>(i Collection. 



