This moth, which is figured in Plate 110, is considered by some entomologists to be a form of _A. candelarum_ peculiar {217} to the hills and mountains of North Wales, and found chiefly at Llangollen, Penmaenmawr, and Snowdon. The colour of the fore wings varies from pale dove colour to dark slaty grey. The caterpillar is blackish, or dark slate colour, with two series of velvety black spots, or dashes along the back; head reddish brown. It feeds on various low-growing plants, among which are rock-rose, wild thyme, sheep's sorrel, bedstraw, etc. Towards the end of April, in Flint, they feed freely and crawl about their food plants in the day time as well as at night (E. W. H. Blagg). The moth has been reared in November and December from eggs found in July, about the second week; the caterpillars having been supplied mainly with sallow, with the addition of dock, groundsel, plantain, and knot grass (R. Tait). On another occasion moths were bred in October from eggs laid by a female reared from caterpillars taken in North Wales in the spring (A. Harrison). The moth is out in July and August and in its rugged haunts, may be disturbed from among the loose rubble, and from chinks in the rocks; but as they come freely to sugared herbage, captives in this way would probably be more numerous. Discovered at Llangollen in 1853, by Mr. Joseph Ashworth after whom it was named by Doubleday in 1855. NOTE.--Barrett mentions the following Agrotids as having occurred in the British Isles. _A. crassa_, Hübn., "one specimen in the cabinet of Mr. S. Stevens." _A. spinifera_, Hübn., a specimen taken in the Isle of Man, August, 1869. _A. fennica_, Tauscher, a specimen recorded in the _Zoologist_ for 1850, as captured in Derbyshire. THE ROSY MARSH MOTH (_Noctua_ (_Coenophila_) _subrosea_). The last two moths were respectively productions of Scotland and Wales; the present one is exclusively English, at least it was, because now and for perhaps the last fifty years it has been extinct in its old fenny haunts at Whittlesea, in Cambridgeshire, {218} and Yaxley, Huntingdonshire. In the latter fen it was first noted by Weaver about the year 1837. In 1846 and onwards it was plentiful, and the caterpillars were common. All was well with the species until about 1851 when the fens were drained, and the moth then ceased to appear. (Plate 108, Fig. 3.) In Sweden, Southern Russia, and in Amurland the species is represented by a bluish form, var. _subcoerulea_, Staud. THE DOUBLE DART (_Noctua_ (_Exarnis_) _augur_).