generally on the Continent,
far from being a rarity, this is one of the commonest butterflies--a fact
difficult for an English collector, removed by only a few miles of sea, to
realise, or reconcile with the _extravagant_ value and importance attached
to a true "British specimen."

The remark made under the head of the Black-veined White, as to that
eluding the net of the novice, by its resemblance to a common kind, will
apply with still greater force to this one; for I suppose there are few
even of the tolerably experienced "hands" who could tell this from the two
last described insects, at a short distance. One curious circumstance
bearing on this is, that a large per centage of the Bath White captures in
this country have been made by juvenile beginners, who hunt and catch
_everything_ they see, Common Whites and all. {89}

This fact should encourage the collector, especially when at work on the
south-east coast, to net all the middle-sized Whites that come within
reasonable distance--of course letting them off again, if they are not of
the right sort.

The wing markings on both the upper and under sides are, though simple,
extremely elegant and chaste. The _female_, which is the sex figured, has
the upper wings beautifully spotted with black. The hind wings are bordered
with a _row of black spots_, and clouded towards the centre with a faint
tint of the same.

The male is distinguished by the absence of the black spot nearest to the
lower margin of the front wing, and of the black marginal spots and grey
clouding of the hind wings. The markings of the under surface, however,
show through their substance rather plainly.

In both sexes, the ground colour of the wings is milk-white. But the chief
decoration is reserved for the under surface, which is chequered, in a
manner not easily described, with a soft but rich green tint upon white,
relieved here and there by a few black touches.

We are informed by Lewin, that it was named the Bath White from a piece of
needlework executed at Bath, by a young lady, from a specimen of this
insect, said to have been taken near that city. But the south-eastern
corner of England, and more especially on the coast, seems to be the
head-quarters of this valued fly,--lending probability to the supposition
entertained {90} by many, that a large proportion of those taken here have
migrated or been blown across the Channel; though I believe it sometimes
breeds here, and that the cate