EXPLANATION OF PLATE XVIII. 



Fig. 1. — Vitheronia laocoon, $ . 



Fig. 2. — CUheronia qthn'lens, $ ; 2 a, 9 . 



Fig. 3. — CUheronia azteca, $. 



Fig. 4. — CUheronia meximna, $ . 



Fig. 5. — Eacles imperialis, $ . 



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