io6 LEPIDOPTERA. 



longitudinal stripe, arising at the base of the costa, passes 

 down the wing to near the anal angle, being sharply defined 

 toward the dorsal area, but shaded off with light brown 

 toward the middle of the wing, and divided by white lines 

 which run up the nervures from the hind margin, that 

 nearest the anal angle being slenderly and indistinctly wedge- 

 shaped. A bright white line commences with a sharp angle 

 above the dorsal prominent tuft and thence proceeds toward 

 the anal angle. The space along the dorsal margin, cut off 

 by the black stripe, is otherwise pale ochreous shading to 

 grey. Great part of the costal region is occupied by a large 

 grey shade which spreads, in longitudinal clouds, into the 

 middle of the wing, and m.ore darkly towards the apex, before 

 which it narrows off to a point ; in this darker portion are 

 contained two or three black streaks lying between nervures. 

 The nervures are clouded with brownish until past the 

 middle, where they become white ; and a white spot is formed 

 by a cloudy ring at the end of the discal cell. Hind 

 marginal space faintly clouded with grey and brownish from 

 the black stripe ; the margin edged with a white and a black 

 line ; cilia greyish, paler at the base. Hind wings elongated, 

 rounded at the apex ; nervures brownish ; dorsal region 

 clothed with very long brownish scales ; at the anal angle is 

 a purplish-black blotch divided by two brownish nervures 

 and a submarginal white line ; remainder of hind margin 

 edged with a faintly brownish line ; cilia white. Female a 

 little larger and stouter, with anteunee very shortly pectinated, 

 otherwise similar. Underside of the fore wings white in the 

 middle, clouded toward all the margins with brownish grey, 

 darkest toward the costa. Hind wings white, faintly edged 

 at the anal angle with brown ; body and legs glossy golden, 

 brown. 



Variation appears to be mainly climatal, the brown shading 

 gradually disappearing in the northern districts, so that 

 specimens sent from Fifeshire by Mr. J. Eoss have hardly 

 a trace of brown colouring, the white ground colour forming 



