Figure 10, Plate 49, shows an example of this species, which also has angled hind wings. In coloration it is whiter and more silky than the last, and when fresh is delicately tinged with pink; the first and second lines are dotted or represented by dots, and the greyish central shade is obliquely inclined in the direction of the tips of the wings. In the marshes on the Essex and Kentish coasts the species is generally rather more rosy (ab. _subroseata_, Haworth), but this form occurs occasionally in the New Forest also. The long, slender caterpillar is whitish ochreous, inclining to pinkish; on the back of each ring is a broad grey shade enclosing a white spot, and a faint grey line on each side. Spiracles, black, with black spots below them on {129} rings four to eight; undersurface bluish-grey with a central white stripe. (Adapted from Fenn.) When reared from the egg, the caterpillar will feed on knotgrass, chickweed, birdsfoot trefoil, etc. The moths sometimes appear in August or September, but the more usual habit of the larva is to hibernate when small and complete growth in the following spring. The moth, which is out in July and early August, conceals itself by day among the vegetation growing in its somewhat restricted haunts. These are chiefly the marshes on the east coast, and similar spots in Kent and Sussex; also the bogs of Hampshire and Dorset, but especially those between Lyndhurst and Brockenhurst in the former county. It is not readily put up during the day, but towards evening it becomes active on the wing, and after its flight may be found sitting about upon the herbage. Abroad, it seems to be pretty much confined to Southern Europe and North-west Africa. THE SMALL BLOOD-VEIN (_Acidalia_ (_Leptomeris_) _imitaria_). All the wings of this pale reddish-brown species are angulated (Plate 49, Figs. 11 and 12). A conspicuous character is the reddish or purplish-red stripe crossing both the wings, and to which its English name no doubt refers. It varies somewhat in the amount of reddish in the general coloration, also in the tint and the width of the prominent oblique cross stripe.