284 LEPIDOPTERA. 



and faintly glossy ; costa slightly arched throughout ; apex 

 sharply angulated and pointed ; hind margin concave imme- 

 diately beneath, then much expanded, but below the middle 

 rounded off; dorsal margin almost straight ; colour slate or 

 bluish-grey, with a hoary dusting, divided at fairly even 

 intervals by three chocolate-red transverse lines ; the first 

 very slender, slightly oblique and nearly straight ; the second 

 thicker, edged inside with pale yellow, more oblique, nearly 

 straight, and placed in the middle of the wing; the third 

 still thicker and more fully coloured, edged inside with 

 yellowish-white, running inward from the apex of the wing 

 in a full curve to the dorsal margin before the anal angle ; 

 outside this the hind-marginal space is rather darker slate 

 colour, shading into chocolate at the apex, the extreme 

 margin faintly dotted with darker grey ; cilia slate colour. 

 Hind wings smoky brownish-white, rather paler and more 

 shining along the costal region ; from the anal angle arises a 

 partial transverse grey-brown streak or cloudy stripe, edged 

 inside with white, and shading off outwardly along the 

 margin ; cilia greyish-white. Female quite similar, but with 

 simple antennas, and the body a little thicker. 



Underside of the fore wings pale smoky-brown shading off 

 to pale grey at the dorsal and hind margins, but with the 

 nervures browner ; there is a faint indication of a slender 

 brown line across the middle of the wing. Hind wings white, 

 abundantly dusted with light brown, and with a faint similar 

 central curved transverse stripe. Body and legs whitish- 

 brown. 



Extremely constant in colour and markings. 



On the wing from the middle of May till the middle of 

 June. 



Larva with fourteen feet ; slender, weak, head half rounded, 

 green ; body apple-green or blackish grey-green with the 

 divisions of the segments yellowish ; spiracles black ; under- 

 surface green-grey. (Hofmann.) 



