The rather rough and dumpy caterpillar is dark greyish brown above, inclining to purplish brown beneath; the raised dots are capped with white, and there is a pair of white-capped warts on the last ring (adapted from Barrett). It feeds on rock rose (_Helianthemum_), cinquefoil (_Potentilla_), salad burnet (_Poterium_), etc.; or the larvae may be reared on groundsel, chickweed, and strawberry, both wild and cultivated: September to May. (Plate 140, Fig. 2.) Mr. A. J. Scollick kindly gave me some eggs, laid by a female taken in Surrey; they were yellowish green at first, but changed to pale brownish. The caterpillars hatched and seemed to thrive on groundsel, but they died during the winter. The moth is out in July and August, and is widely distributed in England, but except that it occurs in Surrey, Berkshire, Herefordshire, and Worcestershire, it seems to prefer the seaboard counties, and in them chiefly affects localities near the sea. It is found in Wales, and in Scotland up to Moray; but in both these countries and also in Ireland it is most frequent on the coast. SCOTCH ANNULET (_Gnophos myrtillata_). This species (Plate 139, Figs. 4 [male], 5 [female]) was introduced, as a species new to Britain, by Curtis, who described and figured it as _Charissa operaria_ in 1826, from specimens captured in Scotland. Subsequently, it was found to be the _obfuscaria_, of Hubner, and also the _obfuscata_ of the Vienna Catalogue (1776). The latter, however, being only a bare name without description, was not generally accepted, although, if valid, it would be prior to Hubner. Still later the species was ascertained to be the _myrtillata_ of Thunberg (1792), and as this name is much earlier than _obfuscaria_ it is here adopted. As a matter of fact, both names are in use, as that of Hubner applies to our ashy grey form of the species, whilst that given by Thunberg belongs to the typical fuscous grey form. [Illustration] 2 Pl. 140. 1. HORSE CHESTNUT: _caterpillar_. 2. ANNULET: _caterpillar_. 3. BORDERED WHITE: _caterpillar, and chrysalis (enlarged)_. [Illustration] 2 Pl. 141. 1, 2. NETTED MOUNTAIN MOTH. 3. FROSTED YELLOW. 4-7. COMMON HEATH. 8-10. BORDERED WHITE. {321} The rather stout caterpillar is grey with darker lines and V-shaped marks along the middle of the back, and dark-edged pale lines on the sides; two erect whitish points on ring 12. It feeds on heather (_Calluna_), broom (_Sarothamnus scoparius_), and needle furze or petty-whin (_Genista anglica_), but it may be reared on knot grass. September to June, sometimes later.