PLATE XXI. 



COLORADIA PANDORA. 

 Fig. 1. — Larva, first stage. Fort Klamath, Oreg., August 30, 1894. Bridgham del. 



HEMILEUCA MAIA. 



Larval stages. Bridgham del. 



Fig. 2.— First stage; "brought by Dr. Packard, May 11. 1893." Food, Salix. 2b, five-pointed crown of tubercle and 

 base of hair; 2c, two-haired tubercle, dorsal on two first segments; 2d, tubercle of second row, with one 

 hair; 2e, tubercle of third row, with two hairs. 



Fig. 3. — First stage, a different color variety. Lonsdale, It. I., June, 1893. Food, oak. 3d, dorsal tubercle of first 

 three segments; 3b, dorsal tubercle. 

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