The caterpillar is whitish green, rather glossy, with a dark green line along the middle of the back, which is broadest on the front rings, and a pale yellow stripe on the sides, the latter edged above with pale green; spiracles pinkish edged with black; a hump on the eleventh ring is purplish tinted. Head pale ochreous brown marked with reddish brown. Sometimes the general colour is yellowish or pinkish ochreous. May be found in June and July on maple (_Acer campestris_) and in confinement will feed very well on sycamore (_A. pseudoplatanus_). The moth usually emerges in May or June, but in 1901 Mr. Adkin reared ten moths, July 24 to 31, from eggs deposited in the spring of that year. The species does not seem to be a common one even abroad; its range extends through Central Europe to Italy and Sicily, and it is also found in Ussuri. [Illustration] Pl. 30. 1, 1a, 1b. PEBBLE PROMINENT: _egg, caterpillar and chrysalis_. 2, 2a, 2b, 2c. IRON PROMINENT: _eggs, caterpillar, chrysalis and cocoon_. 3, 3a. GREAT PROMINENT: _caterpillar and chrysalis_. [Illustration] Pl. 31. 1. IRON PROMINENT. 2. PEBBLE PROMINENT. 3. THREE HUMPED MOTH. 4. LARGE DARK PROMINENT. 5. GREAT PROMINENT. {77} THE COXCOMB PROMINENT (_Lophopteryx camelina_). Probably the commonest of the true Prominents, and certainly the most variable. The early stages are figured on Plate 32, and two forms of the moth on Plate 33. In its typical and southern form the fore wings are more or less pale reddish brown with a darker cloud on the inner marginal area; there are three dusky, or blackish, cross lines, but two of these are generally very indistinct, the third runs from the blackish "tooth" on the inner margin to the front edge of the wing, and is followed by a pale wavy band often outwardly bordered with dusky. Sometimes the fore wings are clouded with dark brown, and in the North of England a dark reddish form occurs. In Scotland the fore wings vary in colour from dusky brown through reddish to pale yellowish brown; sometimes the "tooth" is reddish in chestnut coloured specimens. The whitish eggs are laid on the undersides of the leaves of various trees and bushes upon which the caterpillar feeds; these are chiefly birch, oak, hazel, sallow, and beech.