184 Journal New York Entomological Society. ^^'°^- ^^i- 



22. Basal half of fore wing dark, outer half pale and contrasting; t.p. straight 

 and black below cell forming the boundary; expanse i]i". 



Hadena {Oligia) diversicolor. 



22. With a quadrate dark patch on middle of inner margin, bounded by Cu 

 and the nearly straight and parallel t.a. and t.p. lines; expanse under 

 i" Hadena {Oligia) hausta. 



22. Wings rarely divided into a dark basal and light outer half, if so with 



normally sinuous t.p. line 23. 



23. Blackish, evenly, with contrasting light brown margins, except before tip 



of costa Luperina trigone. 



23. Not blackish and even with contrasting pale margins 24. 



24. Subterminal with a long W-mark on veins M^ and Cu^, or with these veins 



black and accompanied by pale streaks to margin 25. 



24. Subterminal line without a W-mark on M^ and Cu^, at most with teeth of 



about 60° 29. 



25. With a heavy basal dash and a heavier patch in middle of submedian fold, 



without a distinct t.a. line or claviform between them 26. 



25. Claviform and double t.a. line distinct between the two dashes when both 



are heavy 27. 



26. Ground color mainly dark red-hro-wn. . . .Xylophasia (Parastichtis) nigrior^ 



26. Ground color more tawny in middle, clay-colored toward costa and grayish 



toward inner margin Xylophasia (Parastichtis) verbascoides. 



27. Thoracic crest high and broadly divided ; with a dark bar toward upper 



edge of patagiae ; ground color brownish 28. 



27. Thoracic crest high and strongly divided ; ground color even dull fuscous, 

 the dashes at basal angle, basal dash and in middle of submedian fold 

 all fine Parastichtis dionea. 



27. Thoracic crest, not high, and often not distinctly divided ; ground color 



bright tawny brown, without strong dark bands on thorax. 



Xylophasia (Parastichtis) lignicolor. 



28. Scales beside veins paler than ground color, at least in subterminal space 



along Afj and Cm^ Xylophasia (Parastichtis) cariosa. 



28. Ground color not paler along the veins . . Xylophasia (Parastichtis) vulgaris. 



29. Bright ochre with blackish markings Orthosia (Agroperina) helva. 



29. Bright ochre with dull red markings, and sometimes with white reniform. 



Perigea xanthioides. 



29. Not bright orange-ochre (egens is rather bright, but smoothly marked and 



without blackish) 30. 



30. Collar and patagiae black, and disc of thorax dark brown, usually contrast- 



ing with the paler wings Xylophasia (Parastichtis) vultuosa. 



30. Thorax not contrastingly dark, or with the center darkest 31. 



31. T.a. and t.p. lines connected by a heavy black bar in submedian fold. . . .32. 



31. T.a. and t.p. lines not connected, or with the bar lost in the blackish ground 



color 34. 



32. Light reddish gray and red-brown, the median area below the dash con- 



