SERICORID.i:—A NCH YL OPERA . 113 



takes place after sunset, it seems to show no preference for 

 any particular plant. Common in such portions of the Eastern 

 and Southern counties and sometimes plentiful, also to be 

 found throughout England and in Scotland in the Ciyde dis- 

 trict, Perthshire, and Sutherlandshire. I find no record in 

 Wales, though it must be present ; in Ireland it is recorded 

 from Cork, Gal way, Sligo, Armagh, and Antrim. Abroad its 

 range is through Central and Northern Europe, Italy, aLd 

 Russia ; and it is reported to be found in New Hampshire in 

 the United States. 



4. A. biarcuana, iSYr^^/^.^Expanse | to | inch (15- 

 18 mm.). Fore wings forked ; costal region pale grej^-brown ; 

 dorsal region greyish white, separated by an undulating 

 longitudinal black-brown central stripe. 



Antennee pale brown ; palpi whitish brown ; head and 

 thorax red-brown ; abdomen grey-brown. Costa of the fore 

 wings strongly arched, apex shortly hooked, hind margin 

 retuse, but filled out and rounded below ; grey-brown, or 

 reddish-umbreous, dusted with white, along the costal area ; 

 dorsal area from the base to the anal angle white dusted with 

 grey ; separating these areas a dark red-brown stripe 

 bordered with black arising at the base of the wing, and un- 

 dulating so as to form two considerable arches — one in the 

 middle, the other over the anal angle — runs right into the 

 apex ; the costal margin is occupied throughout by oblique 

 light brown streaks ; in the white space above the anal angle 

 are two round red-brown dots ; cilia white with a smoky 

 shading. Hind wings smoky brown with a whiter cilia. 

 Female similar. 



Underside of the fore wings leaden black ; costa shaded 

 v^ith dirty white. Hind wings leaden white with brown 

 dusting along the front area. 



On the wing at the end of May and through June. 



Larva very active — wriggling vigorously when disturbed ; 

 slightly flattened and with the segments deeply divided ; dark 



VOL. XI. H 



