322 LEPIDOPTERA. 



dorsal margin bronzy yellowish-white ; beyond the middle is 

 a yellow streak from the costa, followed by a more faint 

 oblique purple streak. Anterior half of the hind wings pale 

 smoky-purple, remainder smoky pale yellow ; in the middle 

 is a broad transverse smoky-black band, and outside it another, 

 narrower. Body pale purplish-brown, legs chocolate-red, 

 much barred with white ; leg-tufts white. 



A little variable in size, and also in the tone of colour of 

 the fore wings, darker or paler, but in some individuals the 

 rich chocolate clouding is absent, and the general surface 

 purple-brown. 



On the wing at the end of July and in August. 



Larva rather slender, cylindrical, tapering very slightly 

 just near each extremity; head full, rounded, slightly less in 

 size than the second segment, very dark rich brown, becoming 

 nearly black on the lower portions, autennal papillae pale 

 green at their base ; skin of the body rather wrinkled trans- 

 versely, surface of the second segment shining ; colour pale 

 green, not bright, inclining to glaucous in front and a little 

 yellower behind ; dorsal line pale buff or whitish-buff; sub- 

 dorsal lines whitish and ragged in character, finely edged 

 with dark bluish-green, especially so above ; spiracular stripes 

 light sulphur yellow ; uudersurface and prolegs rather paler 

 green than the back ; legs shining black, or only so on their 

 outer surfaces ; raised dots whitish-buff, with a minute black 

 centre ; spiracles dark brownish-red, finely outlined with 

 buff; the hairs of all the dots exceedingly fine and soft. 

 (W. Buckler.) 



April to June on elm ; lying during the day curved round 

 on the underside of a leaf ; very restless if exposed, and only 

 quiet when it can get back to the undersurface of a leaf. 

 Feeding at niglit. There is reason to think that it frequents 

 more especially the higher branches of the trees. The winter 

 is passed in the egg-state. 



Pupa thick and stumpy, rather rounded in front, abdominal 



