Portraits of three examples of this species will be found on Plate 75, Figs. 1-3. The ground colour of the fore wings is whitish tinged with pale ochreous or greyish; the central band is blackish with darker wavy lines running through it near the edges, and not infrequently the middle area is greyish, either on the upper half, or throughout from front to inner margins; a narrow patch at the base of the wings is of the same colour as the central band, and is followed by a reddish-brown streak; as a rule, there is an irregular reddish-brown line, commencing in a cloud on the front margin, and sometimes stripe-like, beyond the pale edging of the central band; in ab. _coarctata_, Prout, the central band is much narrowed; the two black dots on upper part of the outer margin, generally well in evidence, are occasionally united, but sometimes they are very tiny. The hind wings are whitish, more or less sprinkled with dusky scales, chiefly on the basal two thirds, and crossed by dark-grey wavy lines. Sometimes the central band and the basal patch of the fore {182} wings are dull reddish-brown, inclining to purplish. This form which has been referred to _corculata_, Hufnagel, is pretty generally distributed abroad, but is apparently only of local occurrence in the British Isles. The caterpillar is very similar to that of the next species, it feeds on the same kinds of plants, and during the same months of the year. (Plate 74, Fig. 2.) The first generation of moths is on the wing in May and June, and the second in August. The species is widely distributed in England and Wales, often plentiful in some districts in the southern half of the former country, scarce and more local northwards from Yorkshire. Widely spread in Roxburghshire and Clydesdale in Scotland, but less frequent than _ferrugata_; this also seems to be the case in Ireland. The range abroad extends to North America. NOTE.--It is to be regretted that the names by which this and the following species have been known for many years may have to be changed. It has been claimed that the reddish-banded form of _unidentaria_, Haworth, is identical with _ferrugata_ as figured by Clerck, _Icones_, Plate XI. Fig. 14, and is also referable to _corculata_, Hufnagel, both earlier names. If the red form referred to is adopted as the _ferrugata_ of Clerck, then that name will supersede _unidentaria_, Haworth, and the species now known as _ferrugata_, Clerck, will become _spadicearia_. Authorities, however, are not agreed upon this point, so the question still remains open. RED TWIN-SPOT CARPET (_Coremia_ (_Ochyria_) _ferrugata_).