TRIF1D&. I2i 



wings orange-yellow, dusted with smoky-brown, and having 

 a slender, sinuous, ceutral, transverse smoky-brown stripe. 

 Body and legs orange-red or tawny-red. 



Very little variable except in the completeness or division 

 of the central gold Y ; but in the collection of Dr. P. B. 

 Mason is a specimen of a very beautiful pale grey tinged 

 with purple, except the usual rhomboid chocolate dorsal 

 blotch. 



On the wing in June and July. 



Larva velvety, attenuated in front, segmental incisions 

 rather deep ; body with a pulsating dorsal vessel and nume- 

 rous short inconspicuous pale bristles ; head small, rounded, 

 shining, pale green with the mouth brown ; body bright 

 light yellowish-green ; dorsal line slightly darker, dilated in 

 the middle of each segment, and edged with curved whitish 

 lines; subdorsal stripe composed of numerous whitish curved 

 lines ; spiracular line threadlike, yellowish ; between the 

 dorsal and subdorsal lines are traces of pale curved dashes ; 

 usual raised dots white ; undersurf'ace slightly darker than 

 the ground colour; prolegs tipped with dark brown. 

 (C. Fenn.) Mr. Buckler says that the young larva imme- 

 diately after hatching is dirty-white, or of a brownish-white 

 gelatinous appearance, the raised dots dark brown ; the 

 mouth and side markings of the head dark grey-brown. 

 Hybernation takes place while still small, not more than 

 half au inch in length, and it is then bright yellowish-green, 

 the dorsal stripe darker, edged with whitish-yellow lines, 

 outside which are similar lines, followed by the subdorsal and 

 spiracular of the same colour, the latter rather the broader ; 

 raised spots shining white, each with a dark brown hair. 



August till .May on Lamium album and L purpureum 

 (white and purple dead-nettles), Stachys sylvatica, Heracleum 

 sphondylium, Anihriscus sylvestris, nettle, honeysuckle, and 

 even hawthorn. Hofmann says especially upon species of 

 Mentha and Stachys. 



