EXPLANATION OF PLATE XXI. 



Fig. \.—Citheronia reyalis, fully .irrowii, green form (the black spots on the yellow of the anal legs should be 



removed) . 

 Fig. 2. — OHheronia regali.i, fully grown, green and orange form. 



After colored photographs by A. Hyatt Verrill. 



Note. — In all the figures of rUheronia reiiiiVi^. the caterpillar should be represented as feeding back downward 

 with the body suspended by the very long mid-abdominal legs. 



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