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PURPLE EMPEROR. 
Apatura Iris. 
PLATE XXI. 
Pap. Iris, Linn Donovan , pi. 37. S — Lewin, pi. 16 — Tho 
Purple Emperor, Harris Purple Highflyer, Wilkes. 
Antennje long, the club elongate-ovate and con- 
cave : palpi long, and projecting beyond the head, 
where they meet and form a kind of beak ; the basal 
and terminal joint9 nearly of equal length, the latter 
conical, the intermediate one very long, slender, and 
curved : wings somewhat triangular, the edge of the 
primary pair nearly entire, the others slightly scol- 
loped : eyes not pubescent ; the anterior legs small 
and imperfect in both sexes. The caterpillar has 
the head divided behind into two long horns (PI. III. 
fig. 6). The chrysalis has the head piece bifid, and 
is suspended by the tail. 
The surface of the wings, in the species above 
named, is dark brown, changing when seen in 
certain lights into purplish-blue of a very rich 
tint. This brilliant reflection is not visible in the 
female, and that sex is also distinguished by the 
wings being of a paler brown, and having .two ad- 
M 
