BREP HIDES. 335 



developing into stripes ; but in others no fresh spots appear. 

 (W. Buckler.) 



May and June on aspen (Populus tremvla), feeding upon 

 the leaves, spinning them together flat-wise for conceal- 

 ment. 



Pupa half an inch long, narrow, uniformly cylindrical to half 

 the length of the abdomen, whence it rather rapidly tapers ; 

 but the anal segment is thick and bluntly rounded off 

 behind, bearing a curious short, broad, flattened cremaster 

 like the head of a hatchet, from the two outer angles of 

 which spring two short spikes standing straight out sideways; 

 head a little flattened in front, antenna-cases showing the 

 cross lines of the joints, but limb-covers closely packed and 

 smooth ; wing-covers also smooth, slightly ribbed, but scarcely 

 sculptured, shining ; first three abdominal segments furnished 

 in front with a raised ridge which is much punctured ; 

 remaining surface smooth and brilliantly glossy ; colour rich 

 red-brown. In a cylindrical chamber or tunnel gnawed in 

 the substance of soft bark or wood ; without cocoon, but 

 the entrance closed with silk mixed with gnawed fragments 

 of wood. 



In this condition through the winter, and it has been 

 known to remain unchanged for more than one year. 



The moth, the male especially, flies in a lively manner, in 

 the sunshine, at a good height, among aspens and over under- 

 growth. When inclined to rest, it does so on the higher 

 twigs, shutting its wings closely and flatly down, the hind 

 wings quite concealed ; but is easily disturbed and induced 

 to fly again. The female is more inactive. Whether there 

 is any flight during the night does not seem to be known. 

 A very local species, confined to open woods, and places with 

 scattered aspen trees. Found in Kent, Essex, Sussex, Surrey, 

 Middlesex, Dorset, Wilts, Gloucestershire, Cambridgeshire 

 Suffolk, and Norfolk, also rarely in the Trench Woods, 



