BOARMin.K - TKrHROSIA. 187 



luuules edges the liiucl margiu ; cilia pale brown, dashed 

 with smoky-black, Hiud wings broad, rounded and faintly 

 crenulated behind ; brownish-white, dusted all over with dark 

 brown, but more particularly so toward the hind margin, 

 where also is an obscure series of rippled darker clouds edged 

 outside, in some degree, with lirownish-white ; cilia pale 

 brown, tinged with pale red, and dashed with smoky-black. 

 Female stouter but extremely similar, the white subterminal 

 line and attached white blotch of the fore wings often broader 

 and more distinct. 



Underside of all the wings brownish-white, the margins 

 tinged with pale brown ; costa of the fore wings speckled 

 w^ith black ; the discal spot a distinct black perpendicular 

 streak ; the second line indicated in small brown dots, and a 

 cloudy black stripe lying near the hind margin from the 

 costa ; central spot of the hind wings very small, blacky 

 followed by a central transverse line of black dots. Body and 

 legs very pale brown. 



Scarcely at all variable, except in the intensity of the black 

 dusting and markings ; but in the collection of Mr. Percy M. 

 Bright is a specimen almost devoid of dark colouring, the 

 general surface being as pale as the ordinary colour of the 

 pale sub-marginal S]3ot, which therefore becomes absorbed \ 

 the transverse lines, however, are visible, but extremely 

 slender. 



On the wing in May, June, and sometimes the early part 

 of July ; but in forward seasons and very favourable localities> 

 such as the New Forest, sometimes to be found in April. 



Larva elongate, often with slight enlargements or trans- 

 verse dorsal prominences ou the fifth and ninth segments, 

 especially on the latter ; head rounded, not highly polished, 

 dull green, dusted with brown, face paler ; on the anal 

 segment are two small points ; general colour dull hazle or 

 chocolate-brown, often tinged Avitli green; the sides broadly 

 blotched with blackish-brown or very dark ferruginous, which 



