riERID.E. 31 



Creamy white ; male with the base of tlic fore wings 

 greyish, and tlie apex having a large blackish blotch, and 

 frequently one or two blackish streaks on the nervures below 

 it. Female with broader aiid rounder fore wings, which are 

 sometimes spotless, at others with faintly grey clouding at 

 the base and apex. Under side streaked and clouded with 

 greenish-grey, especially in the hind win^s. 



Variation inconsiderable. In the male, in the more or less 

 squared shape of the apical blotch, and in the female, in its 

 presence or absence, this being, however, in some measure 

 determined by its time of emergence, the white females, 

 which have received the varietal name of Binunsis, being 

 almost invariably tliose of the second brood. In some 

 instances the gieeuish-grey colour from the under side shows 

 through the hind wings, and this form has also received a 

 varietal name — Lailujri ; but these names appear valueless. 



May, June, and again in July and August. 



Larva delicate green, with dark green dorsal line> 

 yellow spiracular line, and yellowish-green under surface. 

 When young the spiracular line is whiter, and edged above 

 with a tinge of reddish. Two broods : June- July and 

 August-September. Feeding on Orobics tubcrosus, Vicia 

 cracca, and Lathi/rus. 



Pupa slender, pointed at each end, and swollen in the 

 middle, but not protruding in front like that of the last 

 species. 



This is a wood- frequenting species, exceedingly delicate in 

 appearance, and weak in flight. Fond of the open sides of 

 woods, along which it gently flutters, resting now and then 

 upon a blossom of Orohus, yet of an obstinate and restless 

 disposition, which leads it, when confined in a pill-box, to flap 

 about and break its wings across the middle, after which it 

 is of little value as a specimen. In early seasons it is some- 

 times on the wing, in warm southern woods, in the beginning 

 of May, and the second emergence has appeared before tha 



