IWH LEPTDOPTERA. 



bat straiglitei' ; hind wings whitish-grey tinged and dusted 

 with red and black toward the costal margin and on the 

 nervnres ; central spot small, blackish : beyond it is an un- 

 dulating, slender, smoky-black transverse stripe, and befoi-e 

 the hind margin a smoky-black cloud ; cilia pale reddish- 

 grey. Body whitish-brown dusted with red-brown, leg tufts 

 paler, legs dark brown barred with dull yellow. 



Not very variable, though the broad spaces of dark cloud- 

 ing toward the base, in the central area, and behind, are 

 sometimes more or less pale and the surface consequently 

 greener, till in some instances the green wing is only rippled 

 with dark lines. But it is often difficult to decide the 

 original shade of colour in a specimen which has been more 

 than a few months in the cabinet, since fading commences 

 very soon after death, first to paler green, then to yellowish, 

 until at times the whole of the green surface has become 

 yellow, or even in some parts pale orange. In South York- 

 shire a handsome local race has the black marblina' srreatlv 

 intensified, the broad central band becoming especially black 

 and nearly obliterating the stigmata. In the New Forest, 

 Hants, the tendency seems to be towards exceptional paleness, 

 and Mr. S. J. Capper possesses a specimen from that locality 

 which, except the central band, is almost greenish-white. 

 Among the Yorkshire forms are singular aberrations ; one 

 in the collection of Mr. G. T. Porritt has the costal half of 

 the forewings green, the dorsal half reddish-yellow with the 

 usual dark markings. Dr. H. H. Corbett has one with a 

 large white blotch on the reniform stigma ; another with a 

 similar white blotch on the orbicular. 



On the wing in June, in the Southern counties quite in the 

 beginning qf the month in forward seasons. In confinement 

 a second generation is sometimes obtained in October, 

 November, and December. 



Larva stout, rounded, slightly attenuated in front and 

 thickened behind ; head small, rounded and shining, reddish- 



