The long, slender, and roughened caterpillar is pale greyish brown; the central line along the back is greyish-white, each side edged on the hinder half with brown, having at the beginning of each ring after the third a black dot on either side; side stripes dark brown, inclining to black above; a slender brown line below the black spiracles. (Adapted from Barrett.) It feeds from August to May on ling (_Calluna vulgaris_), marjoram, thyme, knotgrass, etc. From eggs laid on July 1 and 2 caterpillars hatched on July 17 and 18. These were placed on leaves of ribwort plantain (_Plantago lanceolata_), and as soon as large enough transferred to a potted plant, and kept out of doors. Two of the caterpillars grew up quickly, and on August 24 were taken indoors, where they spun up for pupation, one on August 28, and the other on September 1. A female moth emerged September 14 from the first chrysalis (F. C. Woodbridge, 1906). The range abroad extends to East Siberia and Amurland. THE SUB-ANGLED WAVE (_Acidalia_ (_Leptomeris_) _strigilaria_). This species is greyish white, sometimes brownish-tinged; dusky cross markings, of which the oblique shade following the central black dot of the fore wings, and that before the central black dot of the hind wings, are usually most distinct, forming a narrow band across both pairs of wings; the outer margin of the hind wings is angled. The long, slender caterpillar has a roughened appearance; the colour is greenish grey, and the markings comprise a dull green line along the middle of the back, spotted with black on each side; the grey head is variegated with very pale brown. (Adapted from Porritt.) This species (Plate 49, Fig. 8) was known to Haworth, who gave it the English name which it bears to-day. Stephens, {128} writing of it in 1831, states that it was very rare, and that specimens in his collection were from a lane near Darenth, in Kent. With one exception (Hastings, Sussex, 1876), the only present known locality in the British Isles for the species is the Warren, near Folkestone, Kent, where it was discovered in 1859. Here it occurred more or less freely for several years, then it became scarce, and finally, about 1890, seemed to be practically extinct. In 1906, however, Mr. G. H. Conquest netted a female specimen in the Warren on July 24, and as she laid a few eggs, it may be presumed that others had been deposited before capture. From the eggs obtained by Mr. Conquest, nine moths were reared in July, 1907. The caterpillars thrived on traveller's joy (_Clematis vitalba_), which is probably the natural food; but they will also eat dandelion, knotgrass, etc., and like the withered leaves. By keeping in a warm place, it is possible to get moths out the same year, but, as a rule, the caterpillars prefer to hibernate. The range abroad extends to Amurland, China, Corea, and Japan. THE ROSY WAVE (_Acidalia_ (_Leptomeris_) _emutaria_).