EXPLANATION OF PLATE I. 



[Fi^rures 1 to 8, inclnslve, n»taral size.] 



Gypsy Moth, Porthetria dispar (L.). 



Fig. I. Female with the wings spread. 



2. Female with the wings folded. 



3. Male with the wings spread. 



4. Male with the wings folded. 



5. Pupa. 



6. Caterpillar. 



Full grown. 



7. Caterpillar. 



8. Cluster of eggs on bark. 



9. Several eggs enlarged. 



10. One egg greatly enlarged. 



