58 LEPIDOPTERA. 



Underside of the fore wings reddish-drab ; all the middle 

 portion deeply clouded with smoky-black and covered with 

 long hair-scales, as also is the subcostal nervure; reniform 

 stigma visible as a similarly shaped black spot ; costa toward 

 the apex spotted with white, extreme hind margin with 

 black ; cilia blackened toward the tips. Hind wings reddish- 

 white, clouded with tawny along the costal and hind marginal 

 regions; central spot large, lunate, black; extreme hind 

 margin streaked with black. Body and legs red-brown. 



Variable, as already indicated, in the depth of the red- 

 black clouding on the dorsal region of the fore wings, this 

 in some specimens from northern and western districts being 

 intensified nearly to deep black, while in other Scottish 

 examples it is partially obliterated, leaving almost the whole 

 wing reddish-drab. In two specimens taken near Haslemere, 

 Surrey, where the species is very rare, there is a somewhat 

 similar tendency, but the general colour is paler, more 

 smoky, and not of so clear a red-drab. Occasionally speci- 

 mens are so smoky, or tinged with grey, as closely to resemble 

 C. cxolcta, though even then readily distinguished by the 

 long black streak outside the reniform stigma. Usually in 

 these paler examples the black blotch or streak under the 

 orbicular is smaller, sometimes only an ovate spot, while in 

 the darkest examples it attains its greatest development. 



On the wing in September and October, and after hyberna- 

 tion in March and April. 



Larva cylindrical, elongated ; head rounded, rather large, 

 glossy smooth light chestnut, divided in the middle by a 

 faint yellow line; dorsal plate horn-colour, edged in front 

 with black, and showing traces of the beginnings of the 

 white longitudinal lines; body below the subdorsal lines 

 pale greenish-grey; dorsal line slender, white, continuous; 

 subdorsal lines rather broader, also white ; the intermediate 

 dorsal spaces completely occupied by longitudinal deep black 

 stripes regularly dotted with white; spiracular stripe white, 



