Caterpillar, yellow freckled with brown; clouded with brown on first three rings; a reddish brown irregular stripe runs along the sides and upwards towards middle of the back on rings five, six, eight, and nine; a double-pointed hump on the back of ring three, the points tipped with yellow. Head notched on the crown, dotted and clouded with brown. It feeds on the small-leaved lime (_Tilia parvifolia_), and may be found from July to September and even later. I have not seen a living caterpillar of this species; the above short description has been drawn from an inflated skin (Plate 69). The only British locality for this species is the Leigh Woods near Bristol, where it was first met with in 1837. It is, however, very rare and difficult to obtain. Abroad it ranges through Central Europe to Livonia, Southern Sweden, and to Northern Italy. On the Continent the caterpillar feeds on the foliage of other trees than lime, and there are two broods in the year. [Illustration] Pl. 68. 1. SCARCE HOOK-TIP, _male_; 2 _female_. 3, 5, 6. PEBBLE HOOK-TIP, _males_; 4, 7 _females_. [Illustration] Pl. 69. 1, 1a, 1b. SCALLOPED HOOK-TIP: _eggs, caterpillar and chrysalis_. 2, 2a, 2b. PEBBLE HOOK-TIP: _caterpillar, chrysalis and cocoon_. 3. SCARCE HOOK-TIP: _caterpillar_. {135} THE OAK HOOK-TIP (_Drepana binaria_). The male is of an ochreous-tinged brown coloration; all the wings are crossed by two slender deep ochreous lines, and have two obliquely set, almost central, black dots; outer margin of fore wings often blackish, marked towards the tip; the hind wings are deep ochreous on the front marginal area. Fore wings of the female paler, and the hind wings ochreous yellow; the cross lines on the latter often lost in the ground colour (Plate 71). In freshly emerged male specimens the brown is sometimes purplish tinged, and in some examples of the same sex the hind wings may be described as ochreous, with brown bands. The female occasionally has the fore wings tinged with greyish, and the hind wings are sometimes banded with brown, especially on the inner marginal area. The caterpillar is ochreous brown with a double-pointed hump on ring three, a yellowish diamond on the back of rings five to ten; the front and hind rings are brown, more or less tinged with purple; yellowish lines, shaded below with purplish brown, on the sides meet on the back and form an edging to the diamond mark. The figure on Plate 70 shows the caterpillar in its usual resting attitude. It feeds on oak. A widely distributed species in the southern half of England, but not especially abundant in any locality, and not known to occur north of Lincoln. THE BARRED HOOK-TIP (_Drepana cultraria_).