312 



14. Wings in general warm brown acanthodactyta 



Wings of colder shades; grayish or black and white 15 



15. Contrastingly black and white. Abdomen distally white above and 



below P'^" 



Rarely with contrasting black and white areas; the white always suf- 

 fused and powdery. Abdomen without the white areas punctidactyla 



16. With a few slender dark scales very faintly indicating a scale tuft near 

 end of third feather of secondaries, scarcely visible to the naked eye 

 and occasionally lacking. A large species with the dark areas gray. 



Expanse 27 mm. or over albidorsclla 



Dark scales scattered or absent. If grayish, size usually less than 26 

 mm 1' 



17. Triangular patch at base of cleft well marked and usually conspicu- 

 ously darker than wing 1^ 



Triangular patch never well developed, usually not indicated 22 



18. Size large, expanse about 35 mm grandis 



Smaller, less than 30 mm 19 



19. Hind tibiae with dark areas in the form of more or less definite annuli 



at bases of spurs ; sometimes entirely pale 20 



Hind legs more evenly suffused with dark shades or inwardly dark and 

 outwardly pale 21 



20. Pale areas brownish white to buff white fragilis 



Pale areas white to pale gray albida 



21. Brown, only the dark brown triangular patch conspicuous. Fresh speci- 

 mens with a powdering of bluish scales on the primaries. Outer margin 



of second lobe evenly rounded, anal angle retreating alhiciliata 



Ground color buff. Triangular patch brownish black. Outer margin 

 of second lobe slightly wavy, with a median prominence. Anal angle 



more prominent ortUocarfi 



General color more grayish shastac 



22. Costal lobe of primaries with a conspicuous oblique black dash, .fctrodactyla 

 Without such a dash ii 



23. Inner margin of primaries with two clusters of dark scales in fringes 



below base of cleft macii 



Fringe of this margin without such marks 2-1 



24. Primaries with two brown and two whitish transverse bands of about 

 equal width on first lobe or darker and with a faint scale tuft at middle 



of third feather of secondaries albicans 



Only one narrow pale transverse band, if any 25 



25. Costal fringes of primaries pale (subapical) xylopsamma 



Costal fringes dark 26 



26. With a dark dot before base of cleft 27 



Without such a dot albiilliala 



