98 LEPIDOPTERA. 



November till April or May, iu catkins of alder and birch, 

 and a second generation iu July in rolled alder leaves. 

 Spinning np among moss. 



The moth sits on trunks of alders and sometimes birches 

 during the day, and if disturbed falls down and flies away ; 

 but towards dusk flies swiftly over the same trees. Some- 

 times if the weather is very warm and still it will fly off 

 the trunks, as one passes, in little clouds, which quickly 

 return to the trees to rest. Not so plentiful as the last 

 species, but almost as widely spread, and sometimes quite 

 common among alder. 



Common in all the Southern and Eastern counties of 

 England, but apparently scarce or absent in most of the 

 Midlands and some of the Western counties, but recorded in 

 Herefordshire, Derb3^shire, Cheshire, Lancashire, Yorkshire, 

 and Cumberland. In Wales it is not rare in Pembrokeshire ; 

 and in Scotland is to be found iu Dumbartonshire and other 

 parts of the Clyde district, and in Arran, Ross-shire, and 

 Aberdeenshire. In Ireland, found in Cork County, Wicklow, 

 Galway, Sligo, Fermanagh, and Deny. Abroad it has a 

 wide range through Central Europe, Northern Spain, Scan- 

 dinavia, Finland, South-East Russia, and the Caucasian 

 district. 



3. P. demarniana, Fiscli. — Expanse | to | inch (12- 

 16 mm.). Fore wings black-brown with two large white 

 dorsal blotches. 



Antennas grey-brown ; palpi and head dusky white ; 

 thorax blackish brown ; abdomen reddish brown. Fore 

 wings moderately broad, costa strongly folded at the base, 

 very faintly arched ; apex bluntly angulated, hind margin 

 straight, and hardly oblique, black-brown, dusted and 

 rippled with white ; on the middle of the dorsal margin is a 

 large white blotch, its inner edge perpendicular; at the 

 anal angle another, more rounded ; between these is the 



