420 William T. M. Forbes 



45. Gray; the scaling wholly black and white, or with a brown patch on middle 

 of inner margin 15. Epinotia nisella. 



45. Brownish, with considerable brown scaling, especially along outer margin.. 46. 



46. Costal striae conspicuous; outer two- thirds of wing pale gray. 



20. Epinotia solicitana. 



46. Costal stria? obscure; some lead color toward apex.. 17. Epinotia hamptonana. 



47. With central area of speculum luteous, and a luteous irregular patch along 



base of inner margin 27. Eucosma euma'a. 



47. Without luteous markings along inner margin or in speculum 48. 



48. Ground nearly evenly blackish; speculum surrounded by three dark lead-gray 



patches 28. Eucosma womonana. 



48. Paler 49. 



49. Head and thorax conspicuously hoary 50. 



49. Head and thorax nearly even brown 53. 



50. Outer margin convex with a couple of black dots before speculum 



5. Epiblema abbreviatana. 



50. Outer margin concave; a dark vertical line or larger shade before speculum. .51. 



51. Outer margin evenly concave on upper half 52. 



51. Outer margin with a small notch, as in Proteopteryx. . . .2. Exentera improbana. 



52. Ash gray with contrasting dark base and oblique median fascia. 



28.1. Eucosma palabundana, 28.2. Eucosma fiskeana. 



52. Not so marked 52*4. 



52%. Speculum large, conspicuous; antemedial line concave below. 



31. Eucosma zomonana. 

 52y 2 . Speculum obscure;; antemedial line all convex 30. Eucosma gomonana. 



53. Postmedial patch on inner margin obliquely truncate and clean-cut above, 



separated by a narrow even oblique stripe of the ground color, from the 

 postmedial patch at the end of the cell; or with the two patches fused into 

 a fascia which is sharply indented on its basal side at the fold. 



1. Sonia constrict ana. 



53. Otherwise marked 4. Epiblema boxcana. 



54. Hind wing bright orange 26. Eucosma graduatana. 



54. Hind wing not bright-colored 55. 



55. With sharply denned contrasting dark brown patches, but the base of the wing 



of the paler ground color 56. 



55. Without such patches 59. 



56. Two subequal dorsal patches only 19. Thiodia tomonana. 



56. A patch near base of dorsum and one along oixter margin toward apex. 



8. Epiblema tandana. 

 56. A large median patch like an inverted V, clearly denned on its lower part and 

 strongly contrasting, but tending to fade out toward costa. 



24. Eucosma similana. 



56. A conspicuous patch toward base of inner margin, and a dark, but not always 



clearly denned, patch over end of cell; the one at anal angle small or 



absent 24. Eucosma dorsisignatana, 58. 



56. A large patch on outer margin and a small one at anal angle 57. 



57. Expanse 16' mm 6. Epiblema culminama. 



57. Expanse 30 mm 10. Rhyacionia picicolana. 



58. Height of antemedial spot more than one and a half times its width. 



var. diffusana. 



58. Antemedial spot wider, often as wide as high Typical form. 



59. With a straight oblique shade from middle of costa to anal angle. 



23. Eucosma juncticiliana. 



59. A broad brown oblique median fascia, meeting another from apex at middle 



of wing 22. Epinotia signiferana. 



