S-1141001_COMPLETO.pdf

PEARL-BORDERED FRITILLARY. 107
more extensive and distinct in some individuals than in others.
Next the outside series is a row of round dots, succeeded
by a row of small crescents, and these by a row of round dots
intersected by a line and forming the margin, the brown of
the wings appearing between the circles. The hind wings are
marked in a very similar manner, but the billets are much
run together. Their base is also dusky black.
Underneath, the fore wings exhibit all the markings from
the upper side, the tips being lighter, and bordered some way
within with dark reddish orange. The hind wings have one
large silver spot on their centre, placed diagonally across the
central pale bar, and a TOAV of silver crescents runs round the
edge of the wing, folloAved by a reddish line, itself margined
by a streak of greenish straw-colour, the outside margin. These
wings are very beautifully marked with reddish ferruginous,
buff, and greenish straw-colour, in the way of waved bars,
formed by a wide band of the former mottled with the latter,
this by one of the greenish straAV-colour, and this by one of
the latter, the base being also of the greenish straw-colour;
the central pale bar has one.
The caterpillar is black in colour and spined, with two TOAVS
of orange dots on the back.
Several varieties of this species have been recorded.—The
Rev. C. J. Bird, Vicar of Gainsborough, possesses one which is
nearly white. Mr. Stephens records one in which the silvery
marginal spots are wanting, and another with the inner half of
all the upper surface of the wings black, spotted with fulvous,
with large black spots on the under side of the fore wings. Mr.
WestAvood also figures one in which all the black markings on
the upper side of the fore Avings are suffused, except the row
of round spots Avithin the margin, the markings on the hind
wings being somewhat more distinct, and the under side scarcely
different from the ordinary appearance. The autumnal brood
is of a much yelloAver ground colour than the spring one.
The figures are from specimens in my own collection.