Boar Ml A. 329 



the under side. Expands from \\ to 2 inches. Inhabits Central Europe from May to 

 August. The larva is grey, with brown spots and warts, and a darker line on the back. 

 It feeds on oak and other trees in May, and from July to September. The moth is 

 figured at PI. 46, Fig. 4. 



*i6. B. Roboraria (W. V.). — Larger than Consortaria (e.xpands from 2 to 2\ inches), and 

 more uniformly coloured, sometimes wholly dark grey, with the transverse lines and central 

 spot, the former generally indicated only by black dots on the nervures ; the subterminal 

 line whitish and much less zigzag, especially on the hind-wings, and more composed of 

 shallow curves ; hind-wings only slightly waved. The tip of the fore-wings is white on a 

 dark ground on the under side, or is bordered towards the base by a blackish spot. Common 

 in Europe and Northern Asia in June and July. The larva is marbled with brownish 

 grey and white, with a dark projection on the 4th segment, and two points on the I2th. 

 It feeds on oak till May. The transformations are figured at PI. 46, Fig. 5, a — c. 



C. — The anteniKB of the male simply ciliated. 



*I7. B. Crepusciilaria (W. V.). — Wings pale grey, dusted with brown, the second line brown, 

 dentated, and sharply black on the nervures. Behind it is a second broader and browner 

 stripe, streaked with dusky on the nervures. The principal transverse line on the hind- 

 wings commences where the subterminal line on the fore-wings ends. The latter is waved, 

 and shaded with brownish in front. Expands from li to if inches. Inhabits Europe and 

 Northern Asia in April, May, July, and August. The larva is pale grey, with dark spots 

 and streaks ; it feeds on willow and various other forest and fruit trees in June and August. 

 The moth is figured at PI. 46, Fig. 6. 



*i8. B. Binndularia (Borkh.), Laricaria (Doubl.).— Size of Crepusciilaria, ground-colour 

 white, slightly tinged with yellow, and much less speckled with brown ; the lines shaded 

 with pale ochreous. All the lines are better marked, darker, and often continuous ; and the 

 marginal dots are deep black. Inhabits Central Europe, especially England, from March to 

 May, and the larva feeds on larch. 



*I9. B. Consonaria (Hiibn.). — Resembles Crepusciilaria, but the second line is not den- 

 tated, and not so distinctly dotted on the nervures ; it begins on the hind-wings where it 

 ends on the fore-wings, and the subterminal line is shaded with dusky on both sides above 

 the middle. Expands about \\ inches. Inhabits Central Europe and the Amoor from 

 April to June. The larva is brown, with three yellow lines on the back, and two brownish 

 red lines on the sides. It feeds on birch, lime, and beech in August and September. 



*20. B. Extersaria (Hiibn.).— Fore-wings violet-grey, clouded with large transverse specks, 

 with blackish central shade and transverse lines, the second broken into small spots, and 

 with a zigzag whitish subterminal line, expanded into spots in the middle ; hind-wings 

 paler, less speckled, and scarcely waved. Expands from i^ to iJ inches. Inhabits Central 

 Europe in May and June. The larva is varied with brown and grey, and feeds on birch, 

 alder, and hazel in August and September. 



*2i. B. Punctularia (Hubn.). — Wings rounded, pale grey, dusted with darker, the fore-wings 

 with three more or less distinct brown transverse lines, which expand into spots on the 

 costa, and are not dentated ; the first and third are continued on the hind-wings. The 

 subterminal line is suffused and is bordered with a brown spot in front on the costa of 

 the fore-wings. Expands about \\ inches. Common in Europe and Siberia in May and 

 June. The larva is brown, with darker and paler longitudinal lines, and feeds on alder and 

 birch from June to September. 

 48 



