BisTox. 331 



there are two pair of spurs ; and the wings of the female are rudimentary, except in the two 

 first species. 



*i. B. Strataria (Hufn.), Prodromaria (W. V.).— Fore-wings greenish-white, the central area 

 bounded by two black transverse lines, strongly and irregularly dentated, and followed by 

 irregular rusty-brown bands ; hind-wings paler, with brown transverse lines before and beyond 

 the middle. Expands from if to 2 inches. Common in Central Europe in March and April. 

 The larva is greyish-brown, with small protuberances ; it feeds on oak and other trees in 

 summer and autumn. The moth is figured at PI. 46, Fig. 7. 



* 2. B. Hirtaria (Clerck). — Wings greyish-brown (more thinly scaled in the female, becoming 

 pale grey dusted with darker) ; the fore-wings with dark waved and often indistinct transverse 

 lines and central shade ; the fringes spotted with dusky ; antennre dark brown, with very long 

 pectinations in the male. Expands from if to 2 inches. Common in Central and Southern 

 Europe from March to May. The larva is brown, with yellow warts and a yellow collar. It 

 feeds on various trees from June to September. The transformations are figured at PI. 46, 

 Fig. 8, a — c. 



*3. B. Pilosaria (W. V.).— Fore -wings of the male broad, greenish-grey dusted with darker, 

 with more or less distinct suffused transverse lines ; the hind-wings paler and less dusted ; the 

 fringes unspotted, the abdomen slender and reddish above ; the shaft of the antennae whitish, 

 and the pectinations brown and moderately long. Expands from il to 2 inches. The female 

 has very small rudiments of wings, and is clothed with flattened scales, shining grey varied 

 with reddish, the abdomen with two black stripes ; the antenna; and legs quite naked, and 

 spotted with paler. Common in Central Europe and Siberia from January to April. The 

 larva is greenish or yellowish-brown, with black streaks and spots. It feeds on various trees 

 from May to July, and is figured, with the male moth, at PI. 46, Fig. 9, a, b. 



*4. B. Hispidaria (W. V.). — Fore-wings of the male narrow, brownish-gre}-, with the hind 

 margin pale grey, and with distinct black transverse lines; hind-wings white dusted with brown ; 

 the antenna rusty-yellow, with short strong pectinations; the abdomen thick, with diverging 

 spines on the upper side of the front segments. Expands about i\ inches. The female is 

 finely hairy on the antenna, legs, and abdomen, and has slender bristles on the latter; it is 

 dark grey, with two rows of black spots on the back, and unicolorous legs. Local in Central 

 Europe from February to April. The larva is brownish-grey, with orange spots and warts. It 

 feeds on oak and birch in June and July. 



5. B. Pomonaria (Hiibn.). — Wings pale grey, semi-transparent, the nervures dusted with 

 blackish and yellow, and the fringes spotted with dusky ; the fore-wings are also spotted 

 with blackish and yellow on the costa and inner margin, and marked with suffused dusted 

 transverse lines, the body with grey hairs, the upper side of the abdomen with a longitudinal 

 stripe scaled with orange, and the antenna; blackish. Expands from i^- to li inches. The 

 female is black, varied with orange scales and slender white and grey diverging hairs, and the 

 wings are rather longer than the body. Inhabits Northern and Central Europe in April and 

 May, but local. The larva is pale grey, with brown pointed elevations placed on yellow spots, 

 and with a yellow collar. It feeds on oak, &c., in June and July. The male moth is figured 

 at PI. 46, Fig. 10. {B. Lappomxria, Boisd., from Lapland and the Upper Engadine, resembles 

 this, but the body is clothed with black hair, the wings are shorter and broader and more 

 finely scaled, the nervures are more broadly brown, and the fringes are brown and unspotted.) 



6.^ B. Alpina (Sulz.). — Wings of the male whitish, and not semi-transparent, often with a 

 hollow blacki.sh central spot, the fore-wings with two brown transverse lines, the second marked 



