C YMA TOPHORID/E. 1 97 



bluntly squared ; hind margin straight below the apex but 

 curving off to the anal angle, which is rather fully rounded ; 

 dorsal margin gracefully curved ; colour silvery-white, very 

 much rippled with purple-grey; basal line purple-grey, 

 curved and indented ; immediately beyond it commences a 

 very broad purple-grey transverse band, which occupies the 

 whole middle portion of the wing, being broadest on the 

 costa, having its inner edge rather curved, and its outer very 

 bluntly angulated ; within it are darker transverse lines or 

 stripes and a blackish streak at the end of the discal cell. 

 Beyond it is a much indented and rippled slender transverse 

 purple-grey line, followed by a series of clouds of the same 

 colour edged by a beautiful rippled line of the silvery-white 

 ground colour, from which to the hind margin is a band of 

 purple-grey ; before the apex is a thick distinct oblique black 

 streak ; cilia very glistening, purplish-grey with a black line 

 at the base and a grey one through the middle Hind wings 

 very ample, rounded and rather waved at the margin ; white, 

 faintly clouded with grey from the base, rather more 

 strongly so along the hind margin ; a brownish line at the 

 base of the cilia, which are faintly yellowish with the tips 

 white. Female with the body stouter and the costa of the 

 fore wings straighter ; otherwise similar. 



Underside of the fore wings white, clouded with grey to 

 the middle and along the costa, and having two greyish 

 transverse stripes near the hind margin ; hind wings also 

 white, with similar hind-marginal bands ; body whitish- 

 brown ; legs brownish. 



Rather variable in size, and in the distinctness of the 

 rippled lines beyond the broad central band. Specimens 

 from Ireland are sometimes large and pale in colour. 



On the wing in June. 



Larva rather flattened, wrinkled ; head broad, lobes rather 

 divided, orange-brown, mouth black, and a large black ring, 

 centred with white, on each lobe ; second segment with a 



