46 LEPTDOPTERA. 



with black,- and containing a grey internal frame or edging ; 

 costa beyond the middle minutely dotted with white ; at the 

 extreme hind margin is a slender, deeply scalloped, white 

 line ; cilia dark grey. Hind wings rather produced at the 

 apex, the hind margin hollowed below it, and thence sinuous 

 and not much curved ; smoky- white with a pearly gloss at 

 the base shading off to smoky-grey at the hind margin ; cilia 

 white. Female quite similar, yet with a stouter body and 

 small anal tuft. 



Underside of the fore wings smoky-grey, paler at the 

 margins ; costa toward the apex dotted with white ; an 

 obscure black cloudy spot at the reniform stigma. Hind 

 wings white dusted with grey, and toward the base with 

 brown ; central spot round, black, followed by an undulating 

 pale brown transverse stripe. Body and legs grey-brown. 



Variation seems to be in some degree local ; specimens 

 from South Yorkshire often have the middle portion of the fore 

 wings much blackened ; many of those from Cannock Chase, 

 South Staffordshire, have the margins, the costa especially, 

 shaded with brown, while in those from North Staffordshire 

 the hinder half of the wings is much whitened. Fine examples 

 of these forms have been furnished by Mr. F. C. Woodforde. 

 Among others sent by Mr. A. Home from Aberdeen are some 

 having a broad smooth paler band across the middle of the 

 wing and the basal region darkened ; others in which the 

 central area is prettily rippled with dark grey, and the first 

 and second lines are very distinct and faintly duplicated. In 

 the collection of Mr. S. J. Capper is a specimen having a 

 broad pale transverse band filling the space from the first 

 line to the central shade ; another has a very narrow black 

 central stripe. The presence in many specimens of a second 

 orbicular stigma in the discal cell is very curious and un- 

 usual. 



On the wing in August and to the middle of September. 



Larva moderately stout, cylindrical ; head large, rounded, 



