106 



JOURNAL OF ENTOMOLOGY AND ZOOLOGY 



EXPLANATION OF PLATES 



Figure L Cephalic view of the mouth-parts of a preimago of Slhenopis thnle. 



Figure 2. Ventral view of the mouth-parts of a preimago of Sthenopis thule. 



Figure 3. Cephalic view of the mouth-parts of a preimago of Archips argyrospila. 



Figure 4. Ventral view of the mouth-parts of a preimago of Archips argyrospila. 



Figure 5. Ental surface of the cephalic aspect of the head of Protoparce sexta. 



Figure 6. Cephalic view of the mouth-parts of a preimago of Citheronia regalis. 



Figure 7. Lateral view of the mouth-parts of a preimago of Dryocampa rubicunda. 



Figure 8. Lateral view of the mouth-parts of a preimago of Citheronia regalis. 



Figure 9. Lateral view of the mouth-parts of a preimago of Automeris io. 



Figure 10. Ventral view of the mouth-parts of a preimago of Automeris io. 



Figure IL Ventral view of the mouth-parts of a preimago of Dryocampa rubicunda. 



Figure 12. Cephalic view of the mouth-parts of a preimago of Hemerocampa leu- 



costigma. 



Figure 13. Cephalic view of the mouth-parts of a preimago of Dryocampa rubicunda. 



Figure 14. Cephalic view of the mouth-parts of a preimago of Telea polyphemus. 



Figure 15. Lateral view of the maxilla of a preimago of Callosamia promethea. 



Figure 16. Lateral view of the maxilla of a preimago of Samia cecropia. 



Figure 17. Cephalic view of the mouth-parts of a preimago of Automeris io. 



Figure 18. Cephalic view of the mouth-parts of a preimago of Callosamia promethea. 



Figure 19. Ventral view of the mouth-parts of a preimago of Telea polyphemus. 



Figure 20. Ventral view of the mouth-parts of a preimago of Samia cecropia. 



Figure 21. Cephalic view of the mouth-parts of a preimago of Samia cecropia. 



Figure 22. Ventral view of the mouth-parts of a preimago of Callosamia promethea. 



Figure 23. Lateral view of the mouth-parts of a preimago of Telea polyphemus. 



