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 caterpillars have, on one or two occasions, been found in this country. The butterfly has been taken several times at Dover, Margate, and other places on the Kentish coast; at Lewes; Whittlesea Mere, Cambridge; Worcester, and near Bristol. The _caterpillar_, which is to be found in June and September, is bluish with black spots, a pale yellow line on each side, and two of the same colour on the back. M. Le Plastrier reared a number of them, feeding them on the leaves of the Wild Mignonette (_Reseda lutea_). It also feeds on Weld (_Reseda Luteola_). The _chrysalis_ very much resembles that of the Small Garden White, and is totally unlike that of the next, the Orange-Tip, with which it has been by some entomologist united into another genus (_Manicipium_).