On this side (Plate III, fig. 1) the fore wings are much the same as those of _Aglaia_. The hind wings, too, are very similarly coloured and marked, but here we have a distinguishing feature in a row of rust-red spots with silvery centres, just inside the silver border of the hind margin. [Illustration: FIG. 71.--THE HIGH-BROWN FRITILLARY.] This butterfly is common in open spaces of woods in many parts of England, more particularly in the south, and seems to be also fond of hilly heaths and moors. It is on the wing in July, and, towards the end of this month and in the beginning of August, the eggs are laid on the leaves of the dog violet (_Viola canina_) and heartsease (_V. tricolor_). The young caterpillar emerges about two weeks later, and feeds only for a short time before it seeks out its winter quarters among the dead leaves at the root of its food plant. The feeding is resumed in the spring, and continued till the month of June, when it is fully grown. At this time it is about an inch and a half long. Its head is black, and its body pinkish brown. A white line extends down the back, but is interrupted by several black marks. The spines, of which there are six rows, are white, with pinkish tips. _The Silver-washed Fritillary_ (_Argynnis Paphia_) This beautiful and noble butterfly is the largest of the Fritillaries, and the most powerful on the wing. During the latter part of June and throughout July it may be seen gracefully sweeping through the trees and undergrowth of woods, often settling down on a favourite flower for a short time. So strong is its flight that it is useless to attempt to pursue it for any distance. Sometimes it will sail along a wooded path, followed at short intervals by others of its species, and may be taken in the net as it passes. But perhaps the most successful method of netting _Paphia_ is to wait till it has settled, and then secure it by a quick upward or side stroke of the net. If then you miss your aim, off it will dart, sailing over the tree tops till, in a very short time, it is quite out of sight. [Illustration: FIG. 72.--THE SILVER-WASHED FRITILLARY--UNDER SIDE.] The upper side of this butterfly is shown in Plate III, fig. 2, where the general arrangement of the black spots on the rich orange-brown ground is carefully marked. There is a considerable difference between the male and female of this species. The figure on Plate III represents the male. The female does not possess the broad black lines that follow the course of the veins of the fore wings; the basal portions of all four wings are also tinged with a rich olive-brown colour, often with a decided tendency to green; and the black spots of all the wings are larger.