i62 LEPIDOPTERA. 



Plyinoutli ; iuund also in Berks, Huntingdon, and Oxford- 

 shire, and a single specimen is on record as taken at Chatteris, 

 Cambs. In large birch woods in North Staffordshire it is 

 very much more plentiful, but scarce and local in Worcester- 

 shire, Herefordshire and North Lancashire, found in only one 

 locality in Yorkshire, and again more frequently, in certain 

 years, in Westmoreland. I can find no record in Wales, 

 though ib cannot well be absent from the birch woods around 

 Llangollen. In Scotland locally and intermittently plentiful 

 in some districts, as Rannoch and Moncrieffe Hill, Perthshire, 

 Braemar, Sutherlandshire, Moray, and in smaller numbers in 

 Argyleshire, Ayrshire and Dumbartonshire. It does not seem 

 to have been observed in Ireland. 



Abroad its range is wide — all the temperate portions of 

 Northern Europe, Central Europe, Northern Italy, the Ural 

 Mountain districts, and the mountain regions of Central Asia. 



3. A. nebulosa, Hufn. — Expanse, 2 to 2\ inches. Fore 

 wings white or greyish-white, mottled all over with grey 

 lines, clouds, and arrow-head markings ; upper stigmata very 

 large, white ; hind wings pale brownish-grey. 



Antennge of the male rather stout, simple, ciliated with 

 exceedingly minute tufts of bristles, dark brown with the 

 back of the shaft white ; palpi short, broadly tufted, white in 

 front, blackish at the sides, the terminal joint rather slender ; 

 tongue long ; head white, barred in front with black, and 

 spotted on the top with the same ; collar broad, white, barred 

 with black and edged with purple-brown and black ; shoulder 

 lappets white, beautifully bordered with black clouds and 

 dots ; remainder of thorax white, crested at the top and 

 back, the crests tipped and bordered with purplish-brown or 

 black ; fascicles spreading, white ; abdomen whitish, dusted 

 with brown, basal portion covered with long white hair- 

 scales ; dorsal ridge furnished with several long, almost 

 prostrate, black tufts or crests ; lateral and anal tufts spread- 

 ing. Fore wings elongated, broad behind ; costa gently and 



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