172 LEPIDOPTERA. 



14. Fringe of secondaries white 15. 



Fringe of secondaries tinged with fuscous, never entirely white.. 16. 



15. Area on underside of secondaries from margin to dark band across 



wing, white irrorated with brown epig'ena. 



No such distinct area driLsius. 



16. Primaries with two spots connected with the three costal subapical 



spots aeniilea. 



Primaries without spots of this formation 17. 



17. Maculation forming a distinct but broken oblique band. 



batliyllus. 

 Maculation diffuse, not forming a band, spots mere points 18. 



18. Large species, expanding 38 mm., dark in color; band of second- 



aries beneath, irregular and margined with black ; male 



with costal fold pylades. 



Small species, expanding 32 mm., light in color; band of second- 

 aries beneath not margined with black ; no costal fold in the 

 male nevada. 



19. Maculation conspicuous, lower spot nearly quadrate.. ..liippal us. 

 Maculation small, lower spot much longer than broad 20. 



20. Anal angle of underside of secondaries whitish ; no tuft of hairs 



on upperside of secondaries in male inoschiis.* 



Anal angle not tinged with white ; tuft of hairs on secondaries 

 above in male outis. 



21. Secondaries above dark, immaculate, except margin 22. 



Secondaries above, maculate 24. 



22. Secondaries below with distinct triangular white spot below centre 



of costa yuccpe. 



Secondaries below more or less spotted 23. 



23. Secondaries above without marginal lunules, larger, expanding 



three and a half inches ursus. 



Secondaries above with marginal lunules, smaller, long hair on 

 upperside of secondaries in the male streckeri. 



24. Underside of secondaries with a whitish submarginal band 25. 



Underside of secondaries without submarginal band 26. 



Underside of secondaries with incomplete submarginal band of 



yellowish spots. 

 A row of round fulvous spots on upperside of secondaries. 



cofaqiii. 



25. A macular band of large fulvous spots on primaries and second- 



aries above iieiiinoegeiii. 



Smaller (48 mm.). Maculations below, more conspicuous. 



poliugi. 



* Mysie Dyar is not included in the key as I have no specimen of 

 the species for examination. 



