EXPLANATION TO PLATE VIIL 



Fic. 1. — la, Eacles imperialis, stage I, much enlarged. 

 Fig. 2.— Eacles imperialis, stage II, much enlarged. 

 Fig. 3.— Eacles imperialis, stage III, much enlarged. 

 Fig. 4.— Eacles imperialis, stage IV, enlarged. 

 Fig. 5. — Eacles imperialis, stage V, enlarged. 

 Fig. 6.— Eacles imperialis, stage VI, natural size. 

 Fig. 6a.— Front of head of dark form. 

 J. Bridgham, del. 



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