The British Butterflies Described 



confined mostly to the South, where, being double- 

 brooded, it is out in June and August. 



THE CHALK - HILL BLUE (Lyc<ena Corydon\ 

 Plate XIII., Fig. 2. A larger insect than the last, and 

 the male an extremely pale iridescent blue, which is 

 shaded off at the margins into a black border, with a 

 white fringe checked with black. Female, dark brown, 

 black and white checked fringe ; eye-spots nearly 

 obsolete along the margin of both wings. Under side 

 in male almost white, shading to pale green, blue next 

 the body on the fore-wing ; hind-wing, with a wash of 

 pale brown for the ground ; spots black, outlined with 

 white. A marginal row of orange spots is confined to 

 the hind- wing in the male, but extends to the fore-wing 

 in the female ; the ground colour of it, however, is a 

 pale fawn, which sets forth the eye-spots beautifully. 



The caterpillar is green, striped on the back and sides 

 with yellow. A decidedly southern species, frequent- 

 ing the chalk downs of the South and the Isle of 

 Wight, or the limestone districts of the Midlands. It 

 is out in July and August. 



THE AZURE BLUE OR HOLLY BLUE (Lyc<enaArgiolus\ 

 Plate XIII., Fig. 4. This is a very dainty little butter- 

 fly of a deep sky-blue, with rounded wings narrowly 

 fringed with white, ticked with black. The female has 

 a broad, irregular, black border, occasionally extending 

 well into the wing. But the under side (Plate XV., 

 Fig. 3) marks a new departure, being of a very pale, 

 shimmering blue, with only a few small, black spots, 

 which form an incomplete row on fore- and hind-wings. 

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