160 POPULAR ENTOMOLOGY. 



In this species the wings often measure two inches and a 

 half, and are of a yellowish-brown, with transverse undu- 

 lating streaks, and round spots of black, also a series of 

 black crescents near the outer margin ; on the under side 

 the primary wings are of a lighter hue, with a few silvery 

 spots near the tip; the secondary wings yellowish-brown, 

 with many silvery spots, some near the base, the rest form- 

 ing two transverse bands; between the central and external 

 bands there is a series of small round rusty-brown spots, 

 most of them having a silver pupil. The caterpillar is 

 reddish, but becomes olive-green with age, and has a white 

 dorsal line and white dots on the sides ; it feeds on the 

 Viola odorata, or sweet violet. The insect is not un- 

 common in the south of England. 



ARGYNNIS AGLAIA. DarJc-green Fritillary. Very similar 

 to the preceding on the upper side, but rather paler ; the 

 under side is green, particularly the inferior wings, which 

 have six or seven silvery marks near the base, a curved band 

 of the same near the middle, and another parallel with 

 the hinder margin, consisting of seven spots without any 

 intervening row of ocelli, as in the preceding species ; the 

 anterior wings have silvery spots at the hinder margin. 

 The caterpillar is black, with red spots on the sides ; it 



