212 LEPIDOPTERA. 



or an extension of the dark cloud ; first line black, cnrved, 

 duplicated ; second line also double, black, oblique ; the 

 whole space between the first and second lines occupied by a 

 very broad, mottled, black and green, black and grey, or dull 

 blackish, central band, in which are placed a small, oblique 

 orbicular stigma, and a minute oval reniform stigma, both 

 whitish edged with black. Beyond the second line is a 

 similar, more distinct, and much indented, black line, 

 followed by a row of black wedges, and a long, black, 

 indented, curved streak which runs to the apex. Along the 

 hind margin is a very pretty row of deep black crescents, of 

 which the united extremities project into the cilia, which 

 are whitish ; there forming black wedges. Hind wings 

 rather short, with rounded apex, and sinuous hind margin ; 

 whitish ; nervures and hind margin brown ; cilia white. 

 Female with stouter body, and hind wings a little browner 

 toward the hind margin, otherwise accurately similar. 



Underside white and shining, with the nervures of all the 

 wings grey, and a broad grey cloud across the central area of 

 the fore wings; cilia spotted with black; body and legs brown. 



Always variable, as already described, in ground colour 

 and markings, but esjaecially the latter, which changing from 

 their general sharj^ness and distinctness, become, in some 

 specimens, altogether softened and obscured, even so far as 

 to make the whole fore wings of a dull blackish-green ; yet 

 it is always an exceedingly pretty insect. This variation 

 appears to be normal and constant, and by no means local or 

 climatal, the same extreme or medium forms being found in 

 the most widely distant localities. Mr. W. H. B. Fletcher 

 has a specimen wholly black, except some very faint greenish 

 markings toward the base and hind margin. 



On the wing in April and sometimes in the beginning of 

 May. 



Larva elongate, cylindrical, skin rather dull and wrinkled, 

 spots raised ; head bifid, the lobes rounded, red-brown, the 



