DELTOIDES. 287 



indented, yellow-white ; no subterminal line ; reniform stigma 

 suggested by an erect whitish streak in the discal cell ; extreme 

 hind margin defined by a slender brown line, edged outside 

 with pale yellow ; cilia pale drab, dusted with pale yellow. 

 Hind wings rather narrow, the hind margin but little rounded, 

 while the apex and anal angle are somewhat squared ; colour 

 olive-drab, rather more dusted with grey-brown ; in the 

 middle is a yellowish-white, nearly straight, transverse stripe, 

 continuous with the second line of the fore wings; cilia 

 brownish-drab dotted with pale yellow. Female similar. 



Underside of all the wings of a paler shade of the colour 

 of the upper side> the markings similar but less distinctly 

 indicated. Body and legs brownish-drab. 



Apparently not variable. 



On the wing in June and July. 



Larva with fourteen feet ; thickened in the middle, taper- 

 ing behind ; head small, round, red-brown, edged with black ; 

 body browD-yellow with a browner dorsal line ; subdorsal 

 lines interrupted, black ; raised dots black. 



August and September on fallen oak-leaves and on low 

 bushes. (Hofmann.) Curtis says that it feeds on oak in 

 September, and makes no mention of fallen leaves ; indeed, 

 there would be none at that time except the old and decayed 

 leaves of the previous year. It does not seem quite clear 

 that these are not the chosen food. 



Pupa yellowish-brown, with two crooked spikes on the anal 

 segment. In a slight cocoon on the ground. (Hofmann.) 



This species is excessively rare in this country and very 

 little is known of its habits. It seems to occur in open woods 

 and to be readily disturbed in the daytime ; it certainly 

 flies at night, since it has been found at sugar. It was first 

 recorded here by Haworth, but without locality, later by 

 Curtis, and by Stephens, but the latter author seems to have 

 been misled as to the description and food of the larva. He 



