nd the ground colour is suffused with an olive-brown tint,
inclining sometimes to green. The black spots are also larger. Beneath,
however, both sexes are marked nearly alike with _washy streaks of silver_,
and not with defined spots. {129}

The _caterpillar_ (fig. 7, Plate I.), as with all the Fritillaries, is
thorny, with two spines behind the head longer than the rest; black, with
yellow lines along the back and sides. It feeds on violet leaves, also on
the wild raspberry and nettle.

The _chrysalis_ (fig. 16, Plate I.) is greyish, with the tubercles silvered
or gilt.

The _butterfly_ is out in July and August, and is not rare in the woods of
the South and Midland districts, but it also extends its range into
Scotland. On the banks of Wye, about Tintern and Monmouth, I found it
extremely abundant. It has been seen swarming in a teasel-field, near
Selby, Yorkshire.

Its predilection for settling on bramble sprays has been alluded to on page
47.

* * * * *

THE DARK-GREEN FRITILLARY. (_Argynnis Aglaia._)

(Plate X. fig. 1, Male.)

This is a handsomely-marked insect--orange-brown, chequered with black,
above. Beneath, the _front wing_ is coloured nearly as above, _but bears
near the tip several silvery spots_. The hind wing is splendidly studded
with rounded spots of silver, on a ground partly tawny, partly olive-green
and brown. The _male_ is the sex {130} represented, the female being darker
above, both as to the ground colour and markings.

The _caterpillar_, which feeds on the dog-violet, is very similar to that
of the last; as also is the _chrysalis_.

The _butterfly_ is out in July and part of August, and may be seen in a
variety of situations, from the breezy tops of heathy downs, to close-grown
forest-lands in the valleys; and it seems to be distributed over the whole
of the country, occurring in widely distant localities, from the south
coast to Scotland.

* * * * *

THE HIGH-BROWN FRITILLARY. (_Argynnis Adippe._)

(Plate X. fig. 2.)

On the upper surface, this insect so closely resembles the last, that it is
difficult in a description to discriminate between them; but _beneath_, the
two are distinguished by the _absence in Adippe of the silvery spots near
the tip of the front wing_; and though there is some similarity in the
arrangement of the silver spots on the hind wing, and in its general
colouring, _Adippe_ is distinguished by