The specimens shown on Plate 104 are typical of the sexes (Figs. 1[male], 3[female]). The normal pale brown colour is sometimes replaced by greyish, reddish, or olive brown. A specimen with black fore and hind wings has been recorded from North Wales by Mr. Jäger. The markings vary in intensity, and occasionally are almost or quite absent. Several of the varieties have been named. The caterpillar, which feeds on bed-straw and various grasses, etc., is greenish grey, inclining to brownish above, with a dark-edged pale line along the middle of the back, and a similar line on each side; the raised spots are black, and the plate on first ring brownish; head ochreous, marked with darker. August to May. The moth is out in July and August, and is chiefly found on sandhills by the sea. It is most plentiful on the eastern and southern coasts, and in Cheshire, Lancashire, and Yorkshire: it is often not uncommon in the Brandon and Tuddenham districts, and others, in the "Breck Sand" area of Suffolk and Norfolk. The species has been recorded from Worcestershire, and I understand that a few specimens were taken in Surrey last August (1907). In Scotland it occurs on the east coast, and in the Orkney Isles; also in Ayr, on the south-west. In Ireland, also, it is found on suitable parts of the coast. [Illustration] Pl. 106. 1, 2. SAND DART. 3, 4. COAST DART. 5, 6. GARDEN DART. 7, 8, 11. WHITE LINE DART. 9, 10. WHITE-LINE DART, _var. aquilina._ 12. SQUARE-SPOT DART. [Illustration] Pl. 107. 1. TRUE-LOVER'S KNOT. 2, 3. HEATH RUSTIC. 4. PORTLAND MOTH. 5, 6. STOUT DART. 7, 8. DOTTED RUSTIC. 9, 10. NORTHERN RUSTIC. {203} THE HEART AND CLUB (_Agrotis_ (_Euxoa_) _corticea_).