igo LEPIDOI'TERA. 



Resting through the day among these and other low-growing 

 plants, but quite easily distnrl)ed and captured. Flying 

 gently of its own accord at sunset and early twilight. 

 Formerly common in the woods of the London district, 

 where it has now become scarce ; still moderately plentiful 

 and well distributed in those of Surrey, Kent, Sussex, and 

 Hants ; less so in Dorset and Wilts ; found locally in 

 Somerset, Gloucestershire, Herefordshire, Worcestershire, 

 and Cheshire ; also in Bucks, Cambridgeshire and Suffolk ; 

 rarely in Norfolk, and very locally in Yorkshire and West- 

 moreland. I find no record from Scotland, and in Wales 

 only one in Carnarvonshire ; but in Ireland it is found in 

 (xalway, Clare, and Fermanagh, though liy no means 

 commonly. Abroad it inhabits Central Europe, all Northern 

 Europe except the Arctic portion, Bithynia, and most likely a 

 more extended range in Asia, since it is well known to occur 

 in Japan. 



4. B. hyaUnaUs, Hiib. — Expanse 1^ to 1| inch. Fore 

 wings glossy bright light yellow, with a large discal spot and 

 three slender yellow-brown transverse lines, the second 

 bending greatly outwards. Hind wings yellow-white with 

 two slender lines. 



Antennas of the male simple, threadlike, shining white ; 

 palpi slender, porrected, pale chocolate-brown, the inner side 

 white ; head whitish-yellow ; thorax pale yellow with a tinge 

 of orange-brown across the front ; abdomen long and slender, 

 shining whitish-yellow. Fore wings elongated ; costa arched, 

 especially so beyond the middle ; apex bluntly angulated ; 

 hind margin faintly curved ; colour shining light yellow ; 

 first line erect from the dorsal margin, but curved back to 

 almost the base of the costa ; second line arising in the 

 middle of the dorsal margin, bends far outward below the 

 middle, and then with a wide sweep curves up and attains 

 the costa ; from the first bend of this line a faint similar 

 shady line seems to cross also to the costa giving the appear- 



