APATURA. 
157 
Britain, Holland, Belgium, &c., but not found in Scandanavia), in 
the East very sparingly, though it apparently occurs in Dalmatia 
and some parts of Asia Minor. 
Larva. — Green, slightly bluish towards the ventral surface, 
studded all over with minute yellow spots, each segment having a 
yellow line running upwards and backwards in an oblique direction. 
The head, which is flattened in front, has a pair of horn -like appen- 
dages, which are not retractile, and in colour are dark green in 
front and lighter posteriorly. 
Pupa. — Green, darkest on the wing-cases and on the ventral 
surface ; dorsally it is slightly tinged with yellow. PI. XXXVI., 2. 
The Larva feeds on the leaves of the Sallow and on several 
kinds of Poplar (such as Popuhis alba and P. trmida). It is full 
fed by the middle of June at the latest. 
The Imago is remarkable for its habit of frequenting oak 
woods, where it keeps itself at a great distance from the ground ; 
it may, however, sometimes be attracted by sugar, in dry weather 
by moisture or by decaying animal matter. 
VARIETY. 
lole, Schiff. S. V. p. 172 ; Hub. 622-3 ; Esp, 46, 1. ; Err. 385. 
— Beroe, Fab. Ent. Syst. iii. p. 111. 
The central band of white spots on the fore wings, and the white 
fascia of the hind wings are entirely obsolete. 
2. — A. Ilia, Schiff. S. V. p. 172; Hiib. 115-6. — Iris, Esp. 11, 2 
? , 37, 1 ^ . 
Expands 2’0 to 2*50 in. The typical form of this species is 
very similar to Iris at the first glance, but on examination will be 
found to present many important differences ; the chief points 
of distinction are — 1. The presence in both sexes of an orange 
ring on the upper surface of the fore wings near the anal 
angle. 2. The white fascia of the hind wings has not, as in Ins, 
a spur-like projection, but is nearly straight on its outer edge. 
3. The under side will be seen to difi^er in the distinctness of the 
markings, and the hind wings are delicately tinted with bluish 
