The family _Ephyridae_ contains only six British species, chiefly remarkable for the fact that their pupae generally resemble those of butterflies. We choose for our example the pretty little Maiden's Blush, so called on account of the soft reddish patch on the middle of each fore wing. It is represented in fig. 7 of Plate XII. It is moderately common, occurring more or less in all parts of England, as well as certain localities in the sister countries. It is a double-brooded moth, and may be caught in May and August. The caterpillar feeds on oak (_Quercus Robur_), from which it may be obtained by beating both in June and September. It is either green or tawny yellow, marked with yellow oblique lines on the sides. Family--ACIDALIIDAE The moths of this family, over thirty in number, are mostly of small size, and have slender bodies. As a rule the wings are not in the least angulated or scalloped, but in a few species the hind pair are slightly angled on the hind margin; and both fore and hind wings are similarly marked. The antennae are simple in the females, and generally only slightly ciliated in the males. The caterpillars are long and slender, without projections, and feed principally on low plants. The pupae are to be found in loose cocoons among the leaves of the food plants or under the soil. We shall briefly notice three members of this rather extensive family. _The Lace Border_ (_Acidalia ornata_) The wings of this moth are silvery white, marked along the hind margin with a beautiful lace-like border. This border consists of delicate black and dark grey lines, and includes, in the fore wing, two light brown blotches, one near the middle and the other in the anal angle. It is abundant in England, particularly in chalky districts, but does not seem to extend into Scotland. It may be seen on the wing from June to August. [Illustration: FIG. 183.--THE LACE BORDER.] The caterpillar feeds on thyme (_Thymus Serpyllum_) and marjoram (_Origanum vulgare_). _The Riband Wave_ (_A. aversata_) All the wings of this species are of a pale yellowish or ochreous grey. The fore wings are crossed by three transverse dark lines, and the hind wings by two. The space between the two outer lines of the fore wing and that between the lines of the hind wing are usually filled in with a greyish brown, thus forming the 'riband' from which the popular name of the insect is derived; and when this is the case the lines which border the riband are scarcely distinguishable. Just inside the second line of the fore wings, near the costa, is a small but conspicuous brown spot. [Illustration: FIG. 184.--THE RIBAND WAVE.] The moth flies in June and July, and is common in all parts.