156 LEPIDOPTERA. 



parallel with the dorsal margin to near the anal angle, 

 towards which it throws off a point, thence turns with a broad 

 bend and passes obliquely across the wing to near the apex, 

 being broken in the latter portion by the brown nervures, 

 and also shading into yellowish. Before the middle of the 

 wings is an elongated white spot, or streak, parallel with the 

 costal margin ; and several triangular white dots lie along 

 the anal angle and adjacent portion of the hind margin. 

 Cilia pale-brown faintly dappled with darker. Hind Avings 

 dull purplish-brown, edged with pale-brownish, and with 

 light brown cilia. 



Female rather larger than the male, and with similar 

 antennge ; thorax dull pale brown ; abdomen rather elongated, 

 darker brown. Fore wings dull pale brown, shaded with 

 darker brown or with whitish, having the nervures darker 

 brown, and the longitudinal white stripe, when present, placed 

 as in the male, but formed of broader, and more indistinct, 

 whitish clouds ; often however it is absent, the wings being 

 then merely shaded with paler brown. Hind wings purplish- 

 brown. Cilia of all the wings pale brown, sometimes faintly 

 dappled with whitish. 



Underside of the wings, in the male, purplish-brown, with 

 pale brown margins and cilia ; body and legs light brown. 

 Underside of the female very dull brown, similar to the upper 

 but without markings. 



There is considerable variation in the colour of the male 

 from dark-brown to yellow-brown or whitish-brown, and the 

 markings are often broken, incomplete, or partially or totally 

 absent, while in other cases the white colour of the stripe is 

 spread broadly over the whole middle of the fore wings, giving 

 them a peculiarly chalky aspect. In the female, variation is, 

 as already stated, towards obliteration of the markings. 

 In the late Mr. F. Bond's collection is a male with fore wings 

 entirely white, and in that of the late Mr. H. Doubleday, a 

 male entirely of a buff colour, without markings. 



On the wing in June, or even at the end of May. In rare 



