. The moths of the British Isles . % I fe \ n. :i3. T, 2. Grange Underwing. 3. The Rest Harrow. 4, 5- Light Orange Underwhig. 6-3. Grass Emerald. 7 2 PL 39. 1. Orange Underwing: catcr/>, .a. Light Orange Underwing: caterpillar and chrysalis. 3. Lesser Belle: catetpillar. H99- GEOMETRID^. 99 middle of the back darker green edged with white ; two thinwhite lines on each side, and a whitish stripe along the mature it burrows into decayed bark or wood (virgincork in confinement), and before changing to a reddish-brownchrysalis, it spins a thin covering of silk and wood
. The moths of the British Isles . % I fe \ n. :i3. T, 2. Grange Underwing. 3. The Rest Harrow. 4, 5- Light Orange Underwhig. 6-3. Grass Emerald. 7 2 PL 39. 1. Orange Underwing: catcr/>, .a. Light Orange Underwing: caterpillar and chrysalis. 3. Lesser Belle: catetpillar. H99- GEOMETRID^. 99 middle of the back darker green edged with white ; two thinwhite lines on each side, and a whitish stripe along the mature it burrows into decayed bark or wood (virgincork in confinement), and before changing to a reddish-brownchrysalis, it spins a thin covering of silk and woody particles overthe mouth of the chamber. The caterpillar and the chrysalisare shown on Plate 39, Figs. 2 and 2a. Although the bulkof the moths emerge the following April, some have been knownto remain until the following or even the third year. The malesfly about aspen, but only in the sunshine ; in other respects itshabits are pretty much those of the last species. The distribution of the species in England seems confined totwo areas : a western one represented by Worcester, Gloucester,with Monmouth, Wales, Wilts, and Dorset; and an easternone
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