20 



Cincinnati Society of Natural History. 



In conclusion, if it be suggested that it is the habit of burrowing in 

 leaves that has produced such modifications as those shown in the 

 "first form," what, I will ask, has produced such different modi- 

 fications in the leaf-mining Cemiostoma, Tischeria, Nepticida, Antis- 

 pila, etc.? and why has the same habit produced no modification what- 

 ever in the leaf-mining Gelechidai, Coleophora, Laverna, etc.? for there 

 are multitudes of leaf-mining larvie of these and other genera which 

 show no modification of the trophi whatever. To me it seems rather 

 that a Guiding Intelligence shapes their (anal and cephalic) ends! 



EXPLANATION OF THE FIGURES. 

 Fig. 1. Antenna of Phyllocnistis vitifoliella, Cham., 1st form. 



2. " " " " 2d form. 



3. " Lithocolletis hamadryadella, Clem., 1st form. 



4. " " " " 2d form. 



5. " " robiniella, Clem., 1st form. 



6. " " " " 2d form. 



7. " " ornatella, Cham., and Zeucanlhiza amphicarpeoij'oli- 



ella, Clem., 2d form. 



8. " Ornix inusitatumella, Cham., 1st form. 



9. " " 2d form. 



10. " Gelechia cercerisella. Cham., and other Heterocera. 



11. " Dryopteris and other Heterocera. 



12. " Platysamia cecropia. 



13. " Sesia, Laverna, Pier is. 



14. Labial Palpus of Lepidopterous Larvae. 



15. Labium and Spinneret (ordinary form). 



16. " of Lithocolletis hamadryadella, 1st form. 



17. " " Ornix, 1st form. 



18. Maxilla of Cemiostoma. 



19. <; Tischeria. 



20. <; Lithocolletis hamadryadella, ordinary form, it is absent in the 



first form. 



21. " Lithocolletis ornatella. 



22. " Leucanthiza amphicarpe&foliella. 



23. " Gracillaria eupatoriella. 



24. " Antispila. 



25. " Tinea. 



26. " Platysamia cecropia. 



27. " Plutclla cruciferarum (terminal joint). 



28. " Eudamus tityrus (terminal joint). 



29. Mandible of Lithocolletis hamadryadella, 1st form. 



30. " " " 2d form. 



31. " Corisciitm and Phyllocnistis, 1st form. 



32. " Lithocolletis (cylindrical), Ornix, and Gracillaria, 1st form. 



33. " . " " " 2d form. 



