The caterpillar is variable, but generally some shade of green, occasionally purplish red; lines on the sides yellowish, and sometimes there are dusky purplish marks on the back. It feeds, in August and September, on ash, and is said to eat _Artemisia_, _Laurustinus_, and the flowers of scabious. The moth is out in late June and July, and sometimes a second generation appears in the autumn. This species, which by some entomologists is considered to be a form of _E. innotata_, is widely distributed over England, south Scotland, and Ireland. _Tamarisciata_, Freyer, is also considered by some authorities to be a form of _E. innotata_. Some moths reared from larvae obtained, in 1905, from Tamarisk, in Cornwall, have been referred to _tamarisciata_. NARROW-WINGED PUG (_Eupithecia nanata_). The rather variable species represented on Plate 99, Figs. 1 and 2, will easily be recognised by its long pointed fore wings, which in colour are whitish grey, darkened by brownish cross-stripes; a whitish spot before the small, black discal dot. The long, thin, caterpillar, which feeds on ling or heather in the autumn, is whitish with a greenish tinge: the sides are marked with red, and there are some reddish spots on the back. On almost all heather-clad ground throughout the British Isles, this pretty little moth will be found, more or less commonly, during the months of May and early June, and sometimes there is a second flight in July and August. {248} BRINDLED PUG (_Eupithecia abbreviata_). The ochreous grey fore wings of this species (Plate 99, Fig. 3) are crossed by dark, bent lines, and marked with black on the veins; the central area is sometimes whitish, and generally paler than the ground colour. Caterpillar, slender, ochreous brown in colour, with browner lines and redder V-shaped marks on the back. It feeds on oak, in June and July. The moth is not uncommon in oak woods, in April and May, and may be beaten from the boughs in the daytime, and not infrequently found resting on the trunks. Generally distributed, but in Scotland not noted north of Perthshire. OAK-TREE PUG (_Eupithecia dodoneata_). This species (Plate 99, Fig. 5) differs from the last in being smaller, paler in colour, more distinctly marked, and with a rather larger and more conspicuous discal spot. The caterpillar feeds, in June and July, on young leaves of oak, the flowers of the evergreen oak (_Quercus ilex_), and hawthorn. It is orange, or ochreous red, with blackish marks connected by a line of the same colour along the back, and yellowish stripes and lines on the sides. The moth is out in May and early June, and occurs in some of the woods in most of the southern counties of England, and on the west to Worcestershire. It has been recorded from Yorks. and Cumberland; from Glamorganshire, South Wales; and from counties Armagh, Dublin, Wicklow, and Sligo, in Ireland. MOTTLED PUG (_Eupithecia exiguata_).