The earliest British specimens of this species (Plate 91, Figs. 8 [male] and 10 [female]) were taken in Castle Eden Dean, Durham, and among the first to detect these was Captain Blomer, after whom Curtis named the species in 1832. It is still found in that locality, but is also known to occur in Cumberland, Lancs., Yorks., Derby, Staffs., Merionethshire, Worcester, Hereford, Glamorgan, Gloucester, Somerset, Devon, Wilts., Oxford, and Bucks. The slender caterpillar is yellowish green, generally marked with pinkish-brown on the back, but most or all such markings may be absent. It feeds, on wych elm (_Ulmus montana_) (Plate 90, Fig. 1), in August and September. The moth is out in June and July, earlier or later in some seasons. As a rule, it sits on the trunks of beech trees, but I have seen it on the stems of cherry and fir, though hardly ever on wych-elm. Occasionally, newly emerged specimens have been noted on the leaves of dog's mercury (_Mercurialis perennis_). The range abroad extends to Amurland and Japan. LIME-SPECK PUG (_Eupithecia oblongata_). The characteristic features of this white, or greyish white, species (Plate 93, Figs. 1 and 4) is the bluish grey blotch on the front margin, in the lower end of which is the black discal {223} spot. Occasionally, the blotch is much reduced in size, but it is usually large, and sometimes there are indications of a dusky stripe from it to the inner margin. When freshly laid, the egg is whitish, but changes to pale orange. The caterpillar (Plate 92, Figs. 2, 2a) is greenish, with more or less connected reddish marks on the back, or green inclining to yellowish, or bluish, without markings. It feeds through the summer on flowers of ragwort, knapweed, scabious, yarrow, golden rod, etc. The moth, which is often common in gardens, is out from May to August, and specimens of a second brood occur in September and October. It is widely distributed over the British Islands, but in Scotland it does not, apparently, extend north of Perthshire. FOXGLOVE PUG (_Eupithecia pulchellata_). The fore wings are pale ochreous brown with a dusky basal patch limited by a black line; a greyish central band inclining to blackish near the costa, and clouded with ochreous below the middle; the black-and-white edges are wavy; a reddish stripe across the wing before the central band, and a similar, but more irregular, one beyond the band. The hind wings are whitish grey, with several dark-grey bands (Plate 93, Figs. 7 [male], 10 [female]). In var. _hebudium_, Sheldon, from the Hebrides, the usual reddish stripes are replaced by narrower dark-brown ones; the space left by the reduction in width is white, giving the insect a decidedly grey appearance.