3i4 LEPIDOPTERA. 



margin edged by a fine black line set off by a white one ; 

 cilia pale brown with smoky clouding. 



Female very different ; the head and thorax smooth ; 

 abdomen shorter and more pointed ; ground colour of the 

 fore wings silvery-white ; the great blotch rich chocolate, 

 and the apical streak of the same colour, of which there is 

 also a fine dusting along the hind margin and on the dorsal 

 margin towards the base ; dots of the subterminal line rather 

 more distinct. Hind wings smoky yellowish-white. In both 

 sexes this is a singularly beautiful insect. 



Underside of the fore wings smoke-colour, paler towards 

 the dorsal margin ; nervures blacker ; costa dusted with 

 white and having two white dots before the apex. Hind 

 wings smoky-white dusted all over with smoky-brown ; 

 central spot a small black streak. Body and legs smoky- 

 brown, but the front pair of legs black, the tarsi barred with 

 white. 



Only variable in a small degree in the distinctness of the 

 markings towards the hind margin and apex of the fore 

 wings. 



On the wing in June and the beginning of July. 



Larva much elongated and the segments deeply divided ; 

 of the abdominal prolegs three pairs are well developed, and 

 there are indications of the remaining pair ; anal prolegs 

 extended behind ; head much rounded, shining light green ; 

 body bright green, with darker green dorsal, subdorsal, and 

 spiracular lines, the two latter rather near together ; raised 

 dots green or brown ; the hairs single, rather long. 



August and September, on Vaccinium myrtillus (whortle- 

 berry). 



Pupa undescribed, in the earth. Apparently the winter is 

 passed in this state. 



The male moth is very cunning ; it loves to sit in a shady 

 spot in a holly-bush, or on the sheltered side of a tuft of 



