162 NYMPHALID.E. 
tinted with bluish pink or grey, especially along the hind margins. 4. The hind margins are 
much more indented in the female of this species than in that of iris. Lastly, the clubs of 
the antennae are tipped with yeUow or orange." {Lang, I. c.) 
"Larva. Very similar to that of iris, but somewhat smaller and of a yellowish colour, except on 
the ventral surface. The cephalic horns are bordered with yellow. Feeds on Salix and 
several kinds of Poindus, chiefly Populus alba. 
" PiqM. Somewhat rounder than that of iris, and less pointed anteriorly." {Lang, I. c.) 
Typical specimens of A. ilia are either exceedingly local or of very rare 
occurrence in Eastern Asia. I took one example at Gensan, Corea, in July 
1886, and M. Oberthiir {teste Elwes, P. Z. S. 1881, p. 892) says that specimens 
from Askold do not differ from the French type, 
Var. substltuta, Butler. " Male. Nearly allied to A. ilia, differs above in the brighter purple 
shot, the broader trifid tawny band beyond end of cell in primaries, and the less lunate 
character of the submarginal tawny spots of all the wings ; tho discal series of black spots in 
secondaries obsolete ; the whole disc between the tawny bands being black-brown ; the central 
band sharply angulated esternally, more so even than in A. iris : wings below more brightly 
coloured than in A, ilia, all the white bands broader ; the central band of secondaries as 
above, but white with a faint rosy shot ; submarginal interrupted lilacine lunate band pro- 
minent ; discal spots of secondaries not so well defined. Expanse of wings, 3 inches 2 lines.'' 
{Builer, I. c.) 
Female. Similar to the male, but the bands are wider and the spots larger, and the primaries are 
not shot with purple. 
This form occurs in Central and Northern Japan, Yesso, N. China, at 
Gensan in the Corea, and according to Dr. Staudinger in Amurland. 
Fryer states that the insect " delights in flying round the tops of tall willow 
trees [on which the larva feeds], now and again descending to moist spots in 
the roadway or settling on the leaves of its favourite tree. The green pupa 
mimics a young -willow leaf, both in shape and colour. It [the imago] varies 
greatly in intensity of colour according to locality, and is more abundant on 
the mountains than on the plains." 
A. ilia occurs in one or other of its various forms throughout the gi'eater 
part of Europe, Asia Minor, and Northern and Eastern Asia. 
Fixsen (Rom. sur L^p. iii. p. 292, 1887) records var. metis *, and also var. 
bunea^, from the Corea. 
* Smaller than the type ; bands and spots orange or yellow instead of white. 
t Similar in shape to metis, but the bands and all the spots, except those on marginal area, are 
white. 
