There are two generations, the first in June and July, and the second in the autumn, and in confinement a third brood is sometimes obtained. The blossoms of various plants are eaten, but those of hemp-agrimony (_Eupatorium cannabinum_), golden-rod (_Solidago_), clematis, and purple loosestrife (_Lythrum salicaria_), are perhaps favourites. Hawthorn and bramble have also been mentioned as food plants. The moth is out in most of the months from May to August, but seems to be most frequent in the first named. Generally distributed in the southern half of England, extending into South Wales, rare in Yorkshire and in Roxburghshire, Scotland. Widely distributed in Ireland. The range abroad extends to Japan. GREEN PUG (_Chloroclystis rectangulata_). Of this variable species five examples are shown on Plate 100. Figs. 2 and 3 represent the typical and more usual forms; 3 varies in the direction of ab. _subaerata_, Hubn., and Fig. 4 is the greyish ab. _cydoniata_, Bork. Ab. _nigrosericeata_, Haworth (Fig. 6), is blackish with white submarginal line; and an intermediate form (Fig. 5) may be referable to ab. _sericeata_, Haworth. The stumpy caterpillar is of a pale yellow green colour, with {253} a more or less distinct reddish or dark-green line along the back, and reddish ring-divisions. It feeds in flowers of the wild apple or crab, and of apples and pears grown in orchards and gardens. It is found in April and May, and the moth is out in June and July. The species is common throughout the greater part of England and Wales, and its range extends to Ross in Scotland. It has a wide distribution in Ireland. BILBERRY PUG (_Chloroclystis debiliata_). As a British insect, this species (Plate 100, Figs. 7 and 8) was first found in Devonshire, and was then known by the English name of "The Devon Pug." As the yellowish green caterpillar, marked with a darker line along the back and a yellowish one low down on the sides, feeds on bilberry, in April and May, and is by no means confined to Devonshire, the popular name here adopted is more suitable. When quite fresh the moth, which is out in June and July, has a very delicate tinge of green, but this quickly fades out, leaving a pale greyish white insect. In the typical form (Fig. 7) the black central lines are fairly well defined, but in ab. _nigropunctata_, Chant (Fig. 8), the lines are represented by a series of dots. The species is common in some of the sheltered hollows among the hills in Devon and Somerset, and I used to find it in abundance in the Martinhoe district, in the former county. The moths were rarely disturbed from the food plant during the day, but towards dusk they flew in numbers around small trees of mountain ash. Other counties in which it is known to occur are--England: Cornwall, Worcester, Staffordshire, Leicester, and Lancashire (formerly on Chat Moss). Wales: Glamorgan and Pembroke. Scotland: Aberdeen. Ireland: Wicklow, Waterford, Cork, Kerry, and Sligo. {254}