SERICORID.^—PENTHINA . 357 



May and Jane on willow and sallow, folding the leaves 

 with white silk. 



Pupa, head, thorax, and wing-cases black ; limb-covers 

 shining chocolate-brown ; abdomen deep brown, each seg- 

 ment paler behind ; cremaster armed with yellowish hooks. 

 (Wilkinson.) 



The moth sits during the day upon the trunks of pollard, 

 willows, and sallows, occasionally even on poplars, and will 

 often sit on a fence under a sallow bush ; in the afternoon 

 sunshine it loves to rest upon the leaves of sallows and occa- 

 sionally poplars, and if beaten out dashes wildly backwards 

 and forwards to the ground. At dusk it flies vigorously 

 over the same bushes and trees. When at rest it has a 

 singularlj' close resemblance to the excitement of a bird. 

 Rather a local species ; somewhat frequent in restricted 

 localities around London — in Kent, Surrey, Middlesex, and 

 Essex — also found in Sussex, Dorset, Berks, Somerset, 

 Gloucestershire, Herefordshire, O.\:fordshire, Herts, Cambs., 

 Suffolk, Norfolk, Cheshire, Lancashire, Yorkshire, and 

 Durham. I know of no other localities in the United 

 Kingdom. Abroad it is found throughout Centi'al and 

 Northern Europe, the south of France, Central and Northern 

 Italy, Dalmatia, and portions of Siberia. 



Genus 1. PENTHINA. 



Antenna? simple, short ; palpi short, thick, blunt, thickened 

 in the middle, third joint nipple-like ; thorax thick, crested 

 at the back ; abdomen rather short ; fore wings somewhat 

 rhomboid, usually sharply and obliquely divided between 

 two colours ; costa not folded ; hind wings with a tuft of 

 hair-scales on the median nervure. 



A large group of very similar species — difficult to tabu- 

 late. 



