Most of them are of medium size, and with one or two exceptions are dressed in rather dingy garbs; but, although the ground colours are dull, the various markings of the wings are sharply defined. They may be searched for on palings and the bark of trees by day, at which time they repose with their wings sloping like the sides of the roof of a house. Some are easily attracted by lights, and others partake freely of the entomologist's 'sugar.' The larvae have small retractile heads, and feed on low-growing plants, keeping themselves well concealed on the lower leaves close to the ground. _The Frosted Orange_ (_Gortyna Ochracea_) We commence with one of the brightest members of the family, the Frosted Orange. Its fore wings are dark yellow or ochreous, with distinct brown markings, the chief of which are two broad transverse bands. The orbicular spot is pale yellow and very distinct. The hind wings are dingy yellow. This moth flies from July to September, and is easily attracted by a light at night. It is common everywhere. [Illustration: FIG. 146.--THE FROSTED ORANGE.] The larva is yellow, dotted with black, with a brownish plate on the second segment. It feeds inside the stems of a number of plants, including the marsh thistle (_Cnicus palustris_), musk thistle (_Carduus nutans_), burdock (_Arctium minus_), mullein (_Verbascum thapsus_), foxglove (_Digitalis purpurea_), and elder (_Sambucus nigra_). When about to change to the chrysalis it eats _nearly_ to the surface of the stem, leaving only a very thin and transparent layer of the epidermis to cover the hole through which it is to escape when it becomes a moth. The caterpillars are to be found in June, and the chrysalides in July. _The Flame_ (_Axylia putris_) This also is a pretty insect, but much smaller than _Ochracea_. It is common in most parts, and may be seen flying in weedy and waste grounds at dusk during June and July. [Illustration: FIG. 147.--THE FLAME.] The fore wings are pale pinkish brown, with dark brown along the costa, and two patches of the same colour on the hind margin. There is also a double line of small brown dots parallel with the hind margin. The larva is brown, with one yellow and two white dots on each segment. There is also a triangular dark patch on each of the fifth and sixth segments. It feeds during August on the stinging nettle (_Urtica dioica_), and various other low herbs. _The Light Arches_ (_Xylophasia lithoxylea_) The fore wings of this species are very light ochreous, with a light brown patch on the middle of the costa, and patches of the same colour along the hind margin; also a row of small black dots parallel with the same margin. The hind wings are pale ochreous: they are brownish along the hind margin, and have a light fringe. [Illustration: FIG. 148.--THE LIGHT ARCHES.] The moth is very common in waste places, and flies in June and July.