94: BRITISH BUTTERFLIES. 



veins of the front wings, and the ground colour is suf- 

 fused with an olive-brown tint, inclining sometimes to 

 green. The black spots are also larger. Beneath, how- 

 ever, both sexes are marked nearly alike with washy 

 streaks of silver, and not with defined spots. 



The caterpillar (fig. 7, Plate I.), 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 36. 



THE DABK-GKEEN EKITILLAEY. 

 (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 bears near the 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 sex repre- 

 sented, the female being darker above, both as to the 

 ground colour and markings. 



The caterpillar, which feeds on the dog-violet, is very 

 similar to that of the last; as also is the chrysalis. 



The butterfly is out in July and part of August, and 

 may be seen in a variety of situations, from the breezy 

 tops of heathy downs, to close-grown forest-lands in the 



