1 82 LEPIDOPTERA. 



ally with brown, especially between the second and seventh 

 and the eleventh and twelfth segments inclusive, the dark 

 edging being vandyked. Head black and white ; dorsal line 

 greenish-grey ; spots whitish, emitting very short pale hairs : 

 tubercles brown. (Fenn.) 



On sallow, willow, and osier, feeding, generally exposed, on 

 the tips of tvvigs of which the leaves are a little drawn 

 together, in July and August. 



Pupa thick and rather short, with rather long wing- and 

 antenna-cases, dull dark brown, tinged on the back with 

 purplish ; under surface and wing-cases light brown. In a 

 short broad boat-shaped or keeled cocoon, very hard and 

 tough, pale brown, with the keel darker brown, and covered 

 with minute roughnesses, which cause a close resemblance to 

 the bark or other substance on which it is placed. In pupa 

 through the winter. 



The moth ordinarily sits upon the terminal shoots of the 

 willow tree or sallow bush, or among its higher leaves, in the 

 day-time, and is very partial to osier beds and to sallow 

 bushes in marshes. Sometimes it may be seen very con- 

 spicuously sitting upon the trunk of a willow just below the 

 branches, but it greatly prefers the leaves, with which its 

 light green colour, shaded with white, beautifully harmonises. 

 It Hies quietly at dusk, and occasionally comes to sugar. 



It was formerly common at Hammersmith, Fulham, and 

 other places in the outskirts of London, and probably is still 

 existent where the willows are undisturbed. Also found 

 occasionally in woods, marshy places, and especially osier 

 beds, in Kent, Surrey, Sussex, Dorset, Berks, Essex, Suffolk, 

 and probably throughout the southern and eastern counties, 

 though easily overlooked. Common in the fens of Norfolk 

 and Cambridgeshire, and at Cambridge, Wisbech, Chatteris, 

 and Monkswood, Hants. Beyond this somewhat limited 

 range it does not seem to be recorded in tliese islands ; but 

 it is found throughout Central Europe and the temperate 

 portions of Northern Europe ; also in Siberia. 



