Although this butterfly (Plate 109) is, in England, fairly constant in the matter of colour, and, as regards the male especially, differences in tint are noticeable when series from various localities are ranged side by side. Silvery-blue perhaps best expresses the general colour of the male on the upper surface, sometimes very pale, and sometimes faintly tinged with greenish. The blackish border on the outer margin of the fore wings varies in width and in intensity; often there are indications of eyed spots on this margin, and occasionally these spots are quite distinct, although the whitish rings are not always clearly outlined. The black border on the outer margin of the hind wings is often narrow and external to a series of white-edged black spots, but sometimes it is broad and obscures the spots; orange markings rarely appear on this margin, but such aberrations have been taken on the Dorset coast. The fringes are white chequered with blackish on the fore wings, but with seeming continuation of the veins through those of the hind wings. The female is sooty-brown above, with a black discal spot on the fore wings, and sometimes on the hind wings also, and these spots may be ringed with blue or bluish-white; the outer marginal borders are hardly darker, and those on the fore wings are limited by a wavy pale line, which may be faintly or strongly marked with orange, but orange marking on these wings is rather the exception than the rule; on the outer margin of the hind wings there are some black spots, edged outwardly with white and inwardly with orange. The fringes are white chequered with brown, and those of the fore wings are tinged with brown. There are generally some blue scales at the base of the fore wings and over a larger portion of the basal area of the hind wings, but occasionally the whole discal area of the hind wings (Fig. 7, Plate 117), or of all the wings, var. _syngrapha_ (Fig. 8, Plate 117), is of the male colour. The former is from Eastbourne and the latter from Wiltshire. They are rather uncommon varieties, but intermediate forms are more often met with in the same localities as well as in other parts of England where the species occurs.