418 WILLIAM T. M. FORBES 



14. Ground color bright yellow, almost without marks. . . .22. Eucosma bipunctella. 



14. Ground pure white, but marked with blackish 29. Eucosma grotiana. 



14. Ground pure white on basal half of wing, contrasting with the brown apical 



half 21. Epinotia rectiplicana. 



14. Ground color varying from cream to buff or bright ochre, with black scales on 



speculum only 15. 



14. Ground brown, gray, or orange; or, if whitish, witli considerable black scaling 



on general wing-surface, or black marking 20. 



15. No speculum; fore wing lightly strigose with pale brown on pearl gray. 



25. Eucosma engelana. 



15. Speculum distinct, containing two or three black streaks or dots 10. 



16. Base and most of costa whitish, contrasting with the brown area about the 



speculum 32. Eucosma giganteana. 



16. Ground color usually yellowish, the outer part not much darker 17. 



17. Base, except toward costa, with scattered silver dots 18. 



17. No silver dots on basal half of wing 19. 



18. Bright ochre yellow, all white markings clean-cut and contrasting. 



18. Eucosma graciliana. 



18. Pale ochre yellow, shading into cream, the marks in part ill-defined. 



17. Eucosma albiguttana. 



19. Cream-color; longitudinally strigose with pale gray. 



20. Eucosma pergandeaiut,. 

 19. With rounded pale yellow areas separated by hands of powdery light brown. 



21. Eucosma pallidipalpana. 



19. Buff with diffuse clay-color flecking 20^. Eucosma comatulana. 



20. With a distinct speculum, containing two or more black dots or streaks in a 



pale area between two silvery or lead-gray bars, or with the speculum 

 represented by a silvery patch, preceded by distinct black dots, toward the 

 inner margin 21. 



20. No special marks at anal angle; at most, with a couple of silvery or lead- 



colored bands in species which have such markings on other parts of the 

 wing also; white anal patch, if present, not preceded by black dots 54. 



21. A white patch on middle of inner margin; sometimes lightly streaked with 



gray, but contrasting with the general surface; or with a larger whitish 

 area extending to anal angle 22. 



21. No white at middle of inner margin; the patch sometimes traceable but so 



covered with gray striae as not to contrast at all 36. 



22. Patch more than a third as long as wing, extending at least to the costal fold, 



and with sharply defined boundary 9. Epiblema tripartitana. 



22. Patch smaller or ill-defined on upper side 23. 



23. Speculum also a large and clearly defined whitish patch, separate from the 



one on the middle of the margin 8. Epinotia similana. 



23. Speculum not marked by a clearly defined patch 24. 



24. Outer part bright brown . 16. Epinotia loalkerana. 



24. Ground color all gray or dull brown, or with a very little brown at outer 



margin 26. 



[25. Vacant.] 



26. White patch pure white, with clean-cut boundary all around, mostly defined 



with black; oblique and quite irregular -3. Epiblema otiosana. 



26. Patch more or less ill-defined; when most contrasting, meeting the light 



brown shadings of the wing without any dividing line 27. 



27. Line in base of fringe black, clean-cut, and reaching (less intensely) to anal 



angle < 28. 



27. Base of fringe powdery or diffusely gray, rarely fuscous; fringe often white 

 toward anal angle 29. 



