March, 1914-] FORBES : NoCTUID.E OF NORTH AMERICA. 17 



Knot beyond middle of antenna, covered by a strong tuft of hair, the 

 palpi with triangular third joint Renia. 



174. Palpi with second joint bladelike and third slender Chytolita. 



Third joint of palpi triangularly scaled, more than half as broad as 



second Hypenula. 



175. Fore wing stumpy, with outer line evenly curved and cutting off a lens- 



shaped paler terminal area, outer margin rounded Capis. 



Fore wings triangular, with acute apex, palpi shortish, with three shaded, 

 even transverse lines on a gray ground Salia. 



Fore wing with more or less sinuous inner margin, palpi long and beak- 

 like, often different in the sexes, markings more complex when dis- 

 tinct, often all obscure and fuscous 176. 



176. Palpi very broadly scaled above and below, nearly burying the third joint, 



hind wing deeply notched opposite cell Hormoschista (73)- 



Palpi less broadly scaled, outer margin of hind wing only a little 

 sinuous 177' 



177. Fore wing twice as long as wide or less.. Bomolocha (with Lomanaltes). 

 Fore wing more than twice as long as wide 178. 



178. Inner margin decidedly sinuous, with a scale-tuft at anal angle, 



Plathypena. 



Inner margin of hind wing practically straight, no scale-tuft.. Hypena. 



lyg. Fore wing with a more or less distinct raised black tuft at end of cell 



(or reniform), — usually minute and wholly black, at lower angle of 



cell, but in Capis with white scales, and in Hormoschista larger. 



Hypenini 175. 



Fore wing smoothly scaled most Herminiini (74). 



180. Palpi upturned beyond vertex Tcrniosea (75). 



Palpi moderate, normally oblique with broad rough second joint .... 181. 

 Palpi porrect about the length of the head, body slender, fore and hind 



wings similarly marked, hind tibiae of male in our species notched and 

 tufted Pleonectyptera. 



181. Vestiture fine, with a distinct central ridge the whole length of the 



thorax ; eyes not distincly lashed, fore wing acute with even outer 



margin, abdomen with a basal tuft 182. 



Without a central ridge on posterior part of thorax (most of the species 

 with an anterior ridge have lashed eyes) 183. 



182. Upper part of outer margin perpendicular to costa Ipimorpha. 



Upper part of outer margin oblique Pyrrhia. 



183. Trifid (Mo from a quarter to half way up the cell, weak, M3 not stalked, 



etc.) 184. 



M, at least half as large as the other veins and tubular, Idcv. more erect 

 than lower part of mdcv., M3 often stalked with Cui I95- 



184. Eyes distinctly, though often weakly lashed in front, decidedly lashed 



behind 185. 



Eyes not lashed in front, though occasionally with a tuft on the base of 



