This species (Plate 32, Fig. 4) is similar to the last, but the wings are rather less ample, the tint is slightly more brownish, and the veins are paler, especially on the outer area. Distinguishing features are the heavier and deeper black collar, and four blackish dots on the front edge of the fore wings. Var. _plumbea_, Bankes, the usual form in Cornwall, is darker than the type, having the fore wings bluish-grey mixed with chocolate, instead of pale ash-grey mixed with light walnut brown; hind wings brownish grey, instead of pale greyish brown. The caterpillar, which in shape is similar to that of the last species, is ochreous brown, with darker brown lines along the back and sides. It feeds at night on the wood vetch (_Vicia sylvatica_), but is said to eat other kinds of vetch in confinement. It may be found resting on stems of the food plant by day, or, when feeding at night, by the aid of a lantern, but it quickly falls off when disturbed. The moth flies at dusk in July and August, and has a strong liking for the flowers of the wood-sage, but visits golden-red and other flowers also, and will sometimes turn up at the sugar patch. It is not uncommon in some parts of the rocky coast of North Devon, as near Lynmouth, where it was first met with by the late Rev. E. Horton in 1861. It has since been found commonly on the Cornish coast. From what I know of its habits, I should say that the species would be found all along the North Devon and Cornish coasts, wherever the food plant occurs; but it does not seem to inhabit in any other part of Britain. Abroad, its range extends to East Siberia and Amurland. [Illustration] 2 Pl. 32. 1. DARK CRIMSON UNDERWING. 2. LIGHT CRIMSON UNDERWING. 3. THE BLACK NECK. 4. SCARCE BLACK NECK. [Illustration] 2 Pl. 33. 1, 1a. DARK CRIMSON UNDERWING: _caterpillar and chrysalis_. 2, 2a. RED UNDERWING: _eggs, natural size and enlarged, and caterpillar_. {85} HYPENINAE. THE BEAUTIFUL HOOK-TIP (_Laspeyria flexula_). Some specimens are browner and others greyer than that shown on Plate 36, Fig. 1; the pale even lines are generally edged with reddish brown, and the notch under the tip of the wing is margined with the same colour.