The caterpillar is black or sooty-brown, with a red stripe, or blotches, low down along the sides; hairs black or red-brown. In August and September feeding by day on sweet-gale or bog myrtle (_Myrica gale_), bilberry, heather, dwarf sallow, etc. The moth flies in June and July, and may be found on the mosses and moorlands of North England and Scotland. It rests by day on rocks, stones, and, where they are handy, on posts and rails. I found several on Danes Moss, Cheshire, sitting on a derelict tub. Also occurring in Ireland, but not common. THE SCARCE DAGGER (_Acronycta auricoma_). The pale grey, darker-mottled moth depicted on Plate 103, Fig. 3, is very local, and only occurs in some of the woods of {197} Kent and Sussex; the districts mentioned being those of Rochester, Canterbury, Hailsham, and Hastings. The caterpillar is figured on Plate 102, Fig. 2. It is slaty grey in colour with a black plate on the first ring; on the back of each ring is a broad black band, and four orange warts from which arise golden-yellow silky hairs; the hairs on the sides are pale drab (adapted from Buckler). It feeds in June and early July, sometimes in September, on oak, birch, various kinds of _Rubus_, such as blackberry and raspberry, and also on bilberry (_Vaccinium_). The moth is out in late April and in May; occasionally late July and in August. It is rarely seen in the day time, but has been found resting on tree trunks. The range abroad extends to Southern Russia and Siberia. THE SWEET-GALE MOTH (_Acronycta euphorbiæ_ var. _myricæ_). Our form of this species--var. _myricæ_, Guenée (Plate 103, Fig. 4), is rather larger and much darker than the type; but although it is generally somewhat smaller than the Alpine var. _montivaga_, Guenée, it is not otherwise separable from that form. So far as concerns the British Isles, it is only found in Scotland and, rarely, in Ireland. It was first obtained in Perthshire, in 1846, by Weaver, and it is now known to occur more or less commonly through Scotland from Ayr to Sutherlandshire. In Ireland it occurs in Cork, Kerry, Galway, and Sligo, and Kane considers that specimens from Markrea, and Lough Gill in the latter county are referable rather to var. _montivaga_, than to var. _myricæ_. The moth is out in April, May, and June. The dark greyish caterpillar has a deep black, broken, stripe along the middle of the back, and a series of pale yellow marks on each side of it; along the black-margined white spiracles there is a reddish orange line, or broken stripe; pale brownish hairs arising from yellowish warts on the back, and a cross-bar of reddish orange near the head. It feeds on sweet {198} gale, heather, birch, sallow, etc., and may be found from July to September. Two figures of it, from coloured drawings by Mr. Alfred Sich, will be found on Plate 102. THE KNOT GRASS (_Acronycta rumicis_).