DARK-GREEN FBITILLART. 129 



The caterpillar (fig. 7, Plate L), as with all the Fritil- 

 laries, is thorny, with two spines behind the head longer 

 than the rest ; black, with yellow lines along the back 

 and sides. It feeds on violet leaves, also on the wild 

 raspberry and nettle. 



The chrysalis (fig. 16, Plate I.) is greyish, with the 

 tubercles silvered or gilt. 



The butterfly is out in July and August, and is not 

 rare in the woods of the South and Midland districts, 

 but it also extends its range into Scotland. On the 

 banks of Wye, about Tintern and Monmouth, I found 

 it extremely abundant. It has been seen swarming in a 

 teasel-field, near Selby, Yorkshire. 



Its predilection for settling on bramble sprays has 

 been alluded to on page 47. 



3. 



THE DARK-GREEN FRITILLARY. 

 (Argynnis Aglaia.) (Plate X. fig. 1, Male.) 



This is a handsomely-marked insect — orange-brown, 

 chequered with black, above. Beneath, the front wing 

 is coloured nearly as above, but hears near tlie tip several 

 silvery spots. The hind wing is splendidly studded with 

 rounded spots of silver, on a ground partly tawny, partly 

 olive-green and brown. The male is the so repre- 



K 



