132 SILrEB-STUDDEI) BLUE. 



otherwise recalled than by the memory, too retentive, and yet not 

 retentive enough. 



The perfect insect appears about the middle of July. 

 The caterpillar feeds on the broom, {Sarothamnus scoparins,) 

 saintfoin, {Onohrycliis sativa,) and other species of the clover, {Tri- 

 foUum,) and allied kinde. 



In this species, which measures from an inch to an inch and a 

 quarter across, the fore wings are of a silvery blue colour, the front 

 part verging to white; there is a minute speck near the centre, and 

 the edge is black; the fringe white, with sometimes a row of orange 

 dots at the edge. The hind wings are of a similar colour, but the 

 dark edge is wider, seemingly a tissue of spots, and the fore part has 

 also a dark margin; the body above is clothed with silvery and blue 

 down. "The antennae are black, with white rings, the ujjper side of 

 the club black, and the lower fine orange." 



Underneath, the fore wings are of a pale greyish lilac tint, the base 

 saturated with blue; the spot shews through larger, and beyond it is 

 a waved row of black spots, with white rims, the ground-colour under 

 them being paler than the rest of the wings, followed by two rows of 

 minute (and faint ones on a pale orange ground, followed by a black 

 line, and this by the white fringe. The hind wings are marked in 

 much the same way, but there are two additional small eyes near the 

 base and one at the front edge; the pale ground under the row of 

 spots is nearly white, followed by a band of clear orange, with a row 

 of dots on its inner and outer edges, the latter larger and more distinct 

 than the former. 



The female, which is larger than the male, has the fore wings of a 

 copper brown colour, sometimes faintly tinted with blue, with a line 

 of obscure orange spots near the margin; the fringe reddish buff, 

 white at the tip and on the front edge. The hind wings are marked 

 in a similar manner, but the row of orange spots is larger and more 

 distinct, and farther within the margin; in some specimens these wings 

 especially have a faint suffusion of blue. 



Underneath, the fore wings are dark ash grey, with a central eyed 

 spot, then a waved row of the like, then a partial white streak, then 

 a row of black spots, shaded off on the edges, followed successively 

 by an orange band, a row of small black dots, an interrupted white 

 line, a narrow black line, and a greyish white fringe. The hind wings 

 have much the same markings, but there are several spots over their 

 inner portion, and there is a row of bright metallic green streaks along 

 the outside of the orange band. 



The caterpillar is described as being "of a dull green colour, with 



