364 LEP/DOPTERA. 



short spines on every .ibdominal segment, followed by a ridge 

 of more minute points ; creniaster broad and short, with 

 numerous minute hooked bristles. 



The moth hides during the day among birch bushes, its 

 habits being as in the last species ; but it is scarce in the 

 South, and only becomes common on the hills of Scotland, 

 where it occurs up to 600 feet, especially in the high valleys. 

 It is recorded as a scarce species in all the English southern 

 coast counties from Kent to Somerset, but not in Devon or 

 Cornwall ; also rare in Surrey and Berks ; in the eastern 

 counties to Norfolk ; scarce in Gloucestershire, Herefordshire, 

 Cheshire, Lancashire, Yorkshire, AVestmoreland and Cum- 

 berland, and more plentiful in Durham and Northumberland ; 

 in Scotland abundant on the hills of the Clyde district 

 and Perthshire, also in Stirlingshire and the Edinburgh dis- 

 trict ; in Argyle, Aberdeenshire, Kincardineshire, Ross and 

 Sutherland ; and in Ireland at Killarnej^ ; but I find no 

 record in Wales. Abroad it is common throughout Northern 

 Europe and the northern portion of Central Europe, also in 

 Iceland, and in Southern Siberia. 



5. P. pruniana, //^vi.— Expanse i' inch (16-18 mm.). 

 Fore wings short and broad ; basal three-fifths black-brown 

 with a pale dorsal cloud ; remainder dull white, with apex 

 black and hind margin grey. 



Antenna^ black-brown ; palpi, head, and thorax dark brown 

 dusted with black ; abdomen grey-brown. Fore wings broad 

 and rather short : costa well arched ; apex squared ; hind 

 margin nearly perjiendicular ; rather more than one half the 

 area of the wing from the base, black-brown, with a whitish 

 cloud upon the dorsal margin ; edge of this dark space some- 

 what erect and curved, verj' little indented ; remainder 

 creamy-white enclosing a small brown cloud ; costa dotted 

 with black ; apex and hind margin spotted and clouded with 

 dull black; cilia black dusted with white. Hind wings 



