152 LEPIDOPTERA. 



being black, but the latter shades into pink toward the apex, 

 the rest of the hind marginal region is often smoky-black. 

 Hind wings white with a broad, rather patchy, smoky-black 

 band before the hind margin, which, like that of the fore 

 wings, becomes purple-pink at the apex of the wing. This 

 rich colour soon fades as the insect becomes worn. Body and 

 legs whitish-brown. 



Variable in the depth of colour of the fore wings and 

 distinctness of their markings, the latter sometimes almost 

 filling up the whole wing, in other cases almost absent, 

 leaving the whole surface softly shaded with reddish-brown 

 on a creamy ground. 



Here found only in August, September, or October. Abroad 

 having two or more generations in the year. 



Larva when full grown of moderate thickness, attenu- 

 ating a little to each end ; head of the size of the second 

 segment, shining brown, slightly mottled with darker shades; 

 dorsal plate horny and shining as though wet ; dorsal and 

 subdorsal area raw-sienna brown with a tinge of green, and 

 pencilled in fine broken parallel lines of yellow and darker 

 shades, varying a little in tone in different individuals ; 

 dorsal line slight and interrupted, forming on each segment 

 two slender oblong dark spots edged with yellow ; subdorsal 

 line still less distinct, indicated by dark-coloured raised dots, 

 two or three on either side of each segment, each emitting a 

 short bristly hair ; spiracular line sharply defined, pale 

 ochreous, edged above by a fine yellow and a dark um- 

 breous line, and below by a white line ; legs and prolegs 

 pale ochreous ; ventral surface pale grey, with three white 

 lines. (W. H. Tugwell.) Extremely variable ; sometimes light 

 green with the raised dots white, and an extremely broad 

 pale yellow or ochreous-yellow spiracular stripe which shades 

 off to white beneath ; sometimes dull chocolate or liver-brown 

 with the raised dots either white or black, the dorsal line 

 white, or yellow, or hardly indicated, the spiracular stripe 



