SERICORIDM—HED YA. 1 1 



many, Switzerland, Austria, Hungary, Spain, Central Italy, 

 and Dalmatia. 



8. H. oppressana, :rr. — Expanse! inch (15mm.). Fore 

 wings not long, somewhat ovate, grey-white ; basal blotch 

 incomplete, its margin black, shaded off or broken within ; 

 central band imperfect, and with the hinder area clouded 

 with black. 



Antenna3 grey-brown, ringed with paler ; palpi, head, and 

 thorax dark grey mottled with white ; abdomen brown. 

 Fore wings short, not narrow, costa arched, apex bluntly 

 angulated, hind margin oblique ; brownish white, pro- 

 fusely dotted with minute brown and grey clouds ; basal 

 blotch black-brown, marbled with white, bluntly angulated 

 outside ; central band restricted to a large grey-black costal 

 cloud and a small dorsal dot — or these sometimes united by 

 a black-brown cloud — a smaller dot lies near the hind 

 margin, and a round black spot in the apex; cilia grey- 

 black. Hind wings and their cilia smoky brown. Female 

 similar. 



Undersides of the fore wings pale smoky brown with dull 

 black and white costal dots. Hind wings leaden grey. 

 On the wing in June and July. 



Larva semi-transparent, somewhat shining, short, fat, and 

 soft-looking, and of a pale brown colour ; head very small, 

 deep black ; thoracic plate and also prolegs deep black ; a 

 small black plate on the anal segment. (Dr. J. H. Wood.) 



March, April, and the beginning of May, and from the 

 previous autumn, on Fojpidus nigra (black poplar), feeding in 

 the spring in a bud, which it empties, and then moving to 

 another ; but when very young on the underside of a leaf in 

 an angle where it gnaws away the surface and hides under a 

 small silken web. Before hibernation it removes to the 

 bark of the tree and there makes a cocoon-like habitation in 

 which it resides till roused by the spring weather to enter a 



