TRIFID.^. 375 



tinctive characters. ' Qaife recently ^Mr. Selvvyu Image, son 

 of the Eev. J. Image, who obtained the original specimen 

 from its captor, has allowed me to examine it, and I am fully 

 satisfied that although it is the most brilliantly yellow speci- 

 men yet seen by me, it undoubtedly belongs to the present 

 species. One or two examples of this variety. have been 

 taken in the Eastern Counties, and one having the spots of a 

 more fulvous-red in Yorkshire. This specimen is in the 

 Collection of Mr. J. Gardner. 



On the wing from the end of August to the beginning of 

 October. 



Larva rather thick and plump behind, tapering a little 

 gradually towards the head, and a little just at the anal 

 segment ; head reddish-brown ; dorsal plate rounded behind 

 blackish-brown, through it are visible the pale dorsal and sub- 

 dorsal lines ; ground colour above greyish-brown, with a pink 

 tinge, darkest on the thoracic segments ; dorsal and subdorsal 

 lines paler brown, generally suffused on the third and fourth 

 segments with the ground colour, sometimes, but not always, 

 distinct on the rest of the body ; the dorsal, indeed, is often 

 interrupted on each segment by suffusion of the dark purple 

 .dorsal markings, which are diamond-shaped, truncated behind, 

 especially on the eleventh and twelfth segments; yet the 

 dorsal line is usually distinct at the beginning of each 

 segment and there edged with blackish ; here also the edge 

 of the diamond marking has on each side a vvedge-shaped 

 streak which reaches the subdorsal line ; this line also 

 is frequently suffused at the end of each segment but 

 visible at the beginning; spiracles black; the sides, espe- 

 cially about the spiracles,- slightly mottled with purplish- 

 brown; close beneath them is a stripe of pale yellowish- 

 grey, its upper edge still paler; undersurface and legs 

 of a similar colour, but a little darker; four pale raised 

 dots ringed with' dark brown are situated within the dark 

 marks on the back of each segment. This last is a charac- 



