CHALK HILL BLUE. 149 



the fore wings of a most elegant pale metallic blue, with a 

 cast of white; the outer part of the front edge, aiid a broad 

 border on the outside of the wings, as also the veins, dusky 

 black; there is a row of black dots almost hidden by the wide 

 border; the fringe is white, crossed by the veins ending in 

 dots, and very wide, except on the front edge. The hind 

 wings are of a similar colour, with a similar broad border on 

 the outer part, the lower being removed, and shewing the 

 black dots distinctly, bordered by a line only of the former 

 on the outside; the dots are more or less ringed with silvery 

 white; the border at the front of these wings is broader than 

 on the outside; the fringe is white, and very wide. 



Underneath, the fore wings are pale greyish white, the margin 

 defined by a dusky line, through which the veins run, and end 

 in dots; near the middle, towards the base, is a black dot, 

 faintly ringed with white, then another larger oblong central 

 one, then an irregular diagonal row of the like, the middle 

 ones being the largest, and the lower two close together, then 

 another row of smaller and rather fainter ones, succeeded by 

 another: the fringe is white, intersected by the veins. The 

 hind wings are greenish blue about the base, and generally of 

 a pale greyish brown hue, the whitish grey occasionally breaking 

 through, especially near the lower corner; the fringe is white, 

 marked off by a marginal dusky line; these wings are much 

 spotted with a variety of spots and dots, some of them eyed 

 with white, some of the lower ones of a dull orange colour. 



The female has the fore wings of a dark bronzed brown, 

 with more or less phosphorescence of blue; near the centre is 

 a small white spot, with a black pupil; the fringe is dull white, 

 the veins crossing it ending more widely: there is a row of 

 obscure light-coloured dots within the margin. The hind wings 

 are of the same ground colour, but there is more of the blue 

 tinge, at least in some specimens; they also have a small white 

 spot in their centre: the margin is dull Avhite, crossed by the 

 veins, and within it is a row of black dots, partially encircled 

 on the inner side by orange, and these again followed, at least 

 in some individuals, by small bluish triangular-shaped marks. 



