_Daplidice_ is a slow insect--slower than the Common Whites--and it is an easy matter to catch it, when recognized, which the peculiarly heavy flight might aid one in doing. May and August are the months in which to look after this gem of the _Pontia_ genus. * * * * * {91} THE ORANGE-TIP BUTTERFLY. (_Euchloë Cardamines._) (Plate V. fig. 1, Male; 1_a_, Female.) Few vernal ramblers in the country, whether entomological or no, can fail to have noticed, and been charmed by, this merry blossom-like insect, as it gaily flits along by hedge-row and wood-side, pausing anon to taste its own sweet flowers of May, and looking, even when on the wing, so unlike any other of our native butterflies. Truly it is an exquisite and loveable little creature, this Orange-Tip--sometimes styled the Wood Lady; but this latter title is somewhat awkward in its application, inasmuch as the "_lady_" insect is entirely without the characteristic _orange_ adornment, and would hardly be suspected as being the same species with her handsome lord. The _male Orange-Tip_ needs no description, for the purpose of recognition, beyond that conveyed by his name; but as the _female_ is less known, and has been on several occasions mistaken for the rare Bath White (_Daplidice_), it will be well to point out her chief distinguishing characters. The difference between the two insects certainly is obvious enough, when the two are _seen_ together, but their written descriptions read rather alike. {92} The female _Cardamines_ has the wings white _above_, with a greyish black tip, and a _small oval_, or _crescent-shaped black spot_ (much smaller than that of Daplidice) near the _centre_ of the front wings; _beneath_, a white ground, with green marblings, that are much more sharply defined than those in _Daplidice_. Near the centre of the front wing is a _clear black spot_, corresponding in position with that on the upper surface, _and not shaded off with green, as in Daplidice_. We speak of the _green_ marblings of this species--and, to the naked eye, they do appear to be of quite a bright green--but under a microscope or powerful lens that colour disappears, being resolved into a combination of bright yellow and pure black scales, which, with the dazzling snow-white ground scales that surround them, form a microscopic tableau of extraordinary beauty. This can, however, only be seen by daylight, for under artificial light the yellow, on which the whole effect depends, is entirely lost. The _caterpillar_ is slightly hairy, and green, with a white stripe on each side. It has been generally stated that the _Cardamine impatiens_ is the common food plant of this species, _apropos_ of which I will quote the following communication from Mr. Doubleday to the editor of the _Zoologist_:--