246 LEPIDOPTERA. 



county, a locality long destroyed, and at that time also 

 existing iu Hunts. In the year 1878, a few specimens were 

 taken in the Fens of Norfolk by Dr. Wheeler and Mr. W. H. B. 

 Fletcher, apparently indicating an extension of the range 

 of this species. So far as I know these are its haunts in 

 the British Islands. Abroad its known range seems to be 

 limited to the North of France and North-west Germany. 



IS. P, ferrugana, Tr. — Expanse ^ to \ inch (15- 

 lU m.m.). Fore wings truncate, bright chestnut-red or 

 red-brown, irregularly marbled or dusted with purple- 

 brown. 



Auteanfe black-brown ; palpi, head, and thorax bright 

 chestnut ; abdomen silvery black ; anal tuft ochreous. Fore 

 wings elongated but rather squared behind and truncate : 

 the costa flatly arched and rough with projecting scales ; 

 apex angulated ; hind margin retuse and rather expanded 

 below ; colour bright chestnut-red, or red-brown with an 

 orange tint, clouded, or marbled or dotted with purple-red : 

 beyond the middle is a hollow purple-red triangle on the 

 costa which does not reach nearly to the apex ; this triangle 

 is often faint, obscui-e, or even obsolete, on the other hand, 

 it is often extended in a transverse cloud from its apex to the 

 dorsal margin, and gives off similar clouds or small blotches 

 towards the apex and hind margin of the wing ; cilia soft 

 red-brown often whiter toward the tips. Hind wings glossy 

 white, often with a smoky tinge ; cilia white. Female 

 similar. 



Underside of the fore wings shining lead colour ; costa 

 dappled with pale yellow. Hind wings white. 



Individuals of the early summer brood are often paier in 

 colour, even whitish-drab with very faint markings, or only 

 dotted with brown, but both broods are liable to great varia- 

 tion in the presence or absence of the costal triangle and 

 its attendant cloudings. 



On the wing in June and July, and in a more plentiful 



