■ TRIFID.^E. 313 



yet apparently not observed as yet in the Hebrides, Orkney, 

 or Shetland Isles. Curiously enough, it appears to be not 

 very common in the Scilly Isles in the extreme south-west. 

 Abroad it is found throughout the Continent of Europe, and 

 Northern and Western Asia. 



8. A. lunigera, Btcinh. — Expanse \\ to If inch. 

 Antennae ciliated ; fore wings blunt, narrow ; costa straight ; 

 male pale brownish-grey ; orbicular stigma a black ring ; 

 claviform thick and black ; female blackish-slate, with distinct 

 white orbicular stigma. 



Antennse of the male slenderly pectinated with short 

 pointed teeth, each of which is rendered more noticeable by 

 being surmounted by an erect tuft of minute bristles ; 

 these become shorter beyond the middle, leaving the apical 

 portion of the antennae simple ; dark grey. Palpi densely 

 tufted, dark grey in front, yellowish beneath ; head grey ; 

 collar very broad, grey-brown, dotted with v/hitish scales, 

 and barred with black ; shoulder lappets pale grey, dusted 

 and edged with black; remainder of thorax pale grey, 

 slightly raised into a crest from top to back, the hinder 

 tufts tipped with black ; fascicles long, pale grey ; abdomen 

 yellowish- brown, much covered with whitish hairs from the 

 base ; lateral and anal tufts very small. Fore wings narrow, 

 of nearly equal breadth at the base, and almost oblong ; 

 costal and dorsal margins very straight, apex blunt ; hind 

 margin very slightly oblique, but rather more so towaixl the 

 anal angle ; pale hoary-grey, with a purplish Hush, much 

 clouded with blackish along the costa ; basal line incomplete, 

 angulated, double, but formed of hardly more than four 

 cloudy black spots or short streaks ; first line indistinct, 

 double, blackish, rather perj^endicular, but much indented, 

 and almost looped close to the dorsal margin ; second line 

 placed far beyond the middle, gracefully curved, and consist- 

 ing of a series of cloudy-grey crescents, followed by a row of 

 black dots ; space between this and the hind margin clouded 



