2080 Insects. 



7. Emberizaepennella. 14. elatella. 



8. tristrigella. 15. pomonella. 



9. Froelichiella. 16. poraifoliella. 



10. trifasciella. 17. securiferella. 



11. Messaniella. 18. Junoniella. 



12. quercifoliella. 19. alnifoliella. 



13. ilicifoliella. 



Section B. — Anterior wings white, with darker fascia? or lines. 



20. Cramerella. 23. hortella. 



21. tenella. 24. sylvella. 



22. roborella. 25. comparella. 



Section C. — Anterior wings dark, with paler markings from the costa and inner margin, 

 but without the metallic lustre which adds so much to the beauty of Section A. 



26. corylifoliella. 27. Demaryella.* 



* Sections A, B and C form the genus Lithocolletis of Zeller, which that author 

 thus subdivides. 



A. The fringe of the anterior wings forms a small tail. 



a. The small tail appears to come out from the tip of the wing. 



1. roboris. 2. scitulella. 



b. The small tail appears to come down from the tip of the wing. 



3. Saportella. 4. Amyotella. 5. distentella. 6. ilicifoliella. 

 7. delitella. 



B. The fringe of the anterior wings does not form a small tail. 



a. At the base of the anterior wings is a whitish streak. 



8. Rajella. 9. elatella. 10. insignitella. 11. lautella. 12. pomifo- 

 liella. 13. pomonella. 14. salictella. 15. Mannii. 16. ulmi- 

 foliella. 17. cavella. 18. Junoniella. 19. fraxinella. 20. 

 quercifoliella. 21. Messaniella. 22. betulae. 23. connexella. 

 24. scopariella. 25. Alniella. 26. Heegeriella. 



b. At the base of the anterior wings is no whitish streak. 



a. The anterior wings have sharp, but no metallic markings, and at the tip 

 a bright streak or point. 

 27. Cramerella. 28. tenella. 29. abrasella. 30. acerifoliella. 

 3. The anterior wings metallic, with clear metallic fasciae and marginal 

 streaks. 

 31. Emberizaepennella. 32. Froelichiella. 33. Kleemannella. 



34. ulminella. 

 y. The anterior wings powdery, with a few sharp markings, and nearly 

 without splendor. 

 35. Heydenii. 36. agilella. 37. pastorella. 38. tremulce. 39. po~ 

 pulifoliella. 40. comparella. 41. acaciella. 

 Those in italics have not yet been detected in this country, though they probably 

 will eventually reward the researches of the diligent. 



