210 LEPIDOPTERA. 



Suffolk, and taken only once — by Lord Walsingham — in 

 Norfolk. In Wales it is probably widely distributed on 

 the coast, since it has been found in plenty at Swansea ; 

 also at Laugharne, Carmarthenshire ; and I took one speci- 

 men on a rock near Saundersfoot, Pembrokeshire, and two 

 on walls at Pembroke. It is also recorded at Pwllheli, 

 North Wales. In Ireland in the counties of Cork and 

 Galway. Abroad its range seems to be restricted to Central 

 and Southern Europe. Asia Minor, and Armenia. 



2. B. perla, Fab. — Expanse 1 to 1£ inch. Body slender; 

 fore wings white, mottled and marbled with bluish-grey ; 

 costa and hind margin dotted with black. Hind wings 

 white, shaded and barred with smoky-grey. 



Antenna? of the male short, simple, rather fully ciliated, 

 purplish-brown, barred at the back with white ; palpi small 

 and slender, white, shaded on the basal portion with black- 

 browu ; e} r es prominent, deep black ; head rather strongly 

 tufted, white, a distinct white tuft at the base of each 

 antenna ; thorax slender, rather coarsely scaled, white, the 

 back crest prostrate, tipped with dark brown ; fascicles 

 white ; abdomen slender, white, the basal portion of each 

 segment clouded and dusted with brown ; on the back of the 

 first segment is an obscure oblique white crest tipped with 

 brownish-black ; lateral tufts very thin ; anal tuft thick, 

 yellowish-white. Fore wings rather oblong ; costa gently 

 arched; apex rounded; hind margin also gently rounded, 

 not very oblique ; dorsal margin rather full ; colour white, 

 shaded and marbled with bluish-grey ; basal line deep black, 

 angulated, incomplete ; basal area within it tinged with 

 grey; first line very perpendicular, repeatedly angulated, 

 black, not attaining the costa ; second line also black, 

 slender, abundantly rippled and angulated, bending outward 

 below the reniform stigma, above it curving back and running 

 parallel with the costa; subterminal line an obscure and 

 incomplete series of black dots and angles ; orbicular stigma 



