88 LEPIDOPTERA. 



Olj-cle district, including' Renfrew and Dumbartonshire, and 

 in Aberdfenshire. In Ireland, near Cork, Carlow, Galway, 

 Sligo, and in Donegal and Derry. Abroad it occurs in many 

 parts of Central Europe and in Croatia. 



7. S, ramella, Linn. ; paykulliana, Fah — Expanse \ 

 to I inch (12-16mm.). — Fore wings white clouded with grey ; 

 on the dorsal margin near the base is an erect triangular 

 sharply-pointed black spot, and beyond it a smoky-black 

 cloud in the apex, and another at the anal angle. 



Antennte ciliated, light brown ; palpi and head greyish- 

 white ; thorax brownish-white ; abdomen pale brown. Fore 

 wings rather narrow, costa arched, apex rather pointed, 

 hind margin gently carved ; white shaded with smoke 

 colour and dusted with black ; near the base is an erect 

 black dorsal triangle ; and beyond it over the anal angle a 

 more obscure smoky-black cloud edging a faint ocellus ; 

 costa minutely double-dotted with black and with longer 

 streaks at intervals ; apical region clouded with smoky 

 black ; cilia smoky white. Hinds wings and their cilia 

 smoky brown. Female similar. 



Underside of the fore wings smoky black with faint, twin, 

 costal whitish dots. Hind wings leaden white. 



A very frequent variation, perhaps most common in the 

 female, has the deep black of the dorsal triangle extended 

 more or less over the entire fore wings except a broad costal 

 stripe, which remains white ; often this black extension 

 absorbs and obliterates the other marking's. 



On the wing in Jul}^ and August. 



Larva apparently uuclescribed. Said to feed in April and 

 May in the buds, catkins, and twigs of birch. 



The moth sits upon the trunks, and especially upon the 

 branches and twigs of birch, very often upon birch bushes, 

 and is easily beaten out in the day-time, when it ilies steadily 



