ILLUSTRATIONS. 



Page. 



1. Egg mass of the gipsy moth (Port/ieina rfispar L.) 16 



2. Full-grown caterpillar of the gipsy moth. 17 



3. Pupa of the gipsy moth 18 



4. Male gipsy moth 19 



5. Female gipsy moth 19 



6. The brown-taU moth (Euproctis dirysorrfuBa): Male, female, and caterpillar.. 20 



7. Wiater nest of the brown-taU moth 21 



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