20 LEPIDOPTERA. 



colour rich oclireous, or orange-vellow, with a moderate 

 sprinkling of black atoms ; costal region darkened by a 

 thicker dusting of cloudy brownish-black; apex and hind 

 margin more broadly margined with black-brown ; cilia 

 purplish-brown. Hind wings rather long, gently rounded 

 and crenulated behind ; the apical and anal angles rather 

 fully indicated ; colour somewhat paler orange-yellow with a 

 faint purple flush, and more plentiful dusting of black- 

 brown, which accumulates towards the hind margin into an 

 ill-defined blackish border ; cilia purplish-brow^n. Antennas 

 of the female simple ; body rather stouter ; colour of fore 

 and hind wings lighter orange-yellow with less dark dusting, 

 especially on the hind wings, and a more distinctly dark 

 band along the hind margins, this indeed being sometimes 

 dark purplish-brown, or nearly black. 



Underside of the fore wings of the same colour as the 

 upper, but dusted all over with black-brown dots and per- 

 pendicular streaks, which are larger and more crowded on 

 the costal and hind marginal areas ; cilia pale yellow-brown, 

 dusted wdth dark brown. Hind wings very different, yel- 

 lowish-white with every nervure abundantly dusted, and 

 broadly rippled, with mossy streaks of black-brown ; between 

 nervures four and six is a white stripe lengthwise from the 

 base to the hind margin, and another, not quite so distinct 

 lies between the second and third, while the hinder spaces 

 between the other nervures are more shortly white ; cilia 

 white, mixed with black and brown. Body and legs white, 

 dotted with brown and black ; tarsi browner. 



Usually but little variable and only in the degree of black 

 dusting, which in the male sometimes suffuses the hind 

 wings and renders them smoky black. In Dr. P. B. Mason's 

 collection is a specimen wholly black except a tinge of yellow 

 in the middle of the fore wino-s. 



On the wing in May and the beginning of June, and as 

 a partial, or complete, second generation, at the end of July 

 and in Auo-jst. 



