THE CAMBERWELL BEAUTY 
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segment, then decreasing and curving to the anal segment, 
which terminates in a long, slightly-curved cremaster, fur¬ 
nished with an ample cluster of hooks. The ventral surface 
forms a fairly straight line, except at the apex of the wings, 
where it is bulging. The ground colour is buff, covered 
with fuscous reticulations. The entire surface is clothed 
with a whitish, powdery substance, giving the pupa a pale 
pinkish-lilac bloom which is readily nibbed off; the pupa 
then assumes a brownish hue. Along the dorsal surface are 
rows of points replacing the larval spines. Apparently there 
is no variation in the colouring of the pupae ; every specimen 
of some 2,000 I examined was identical. The pupal stage 
occupies about twenty-one days. 
Imago. The sexual difference is in size only, the female 
being much the larger. Expanse of wings in the male is 
from 69 mm. to 76-2 mm. ; in the female from 82*5 mm. to 
88*8 mm. Both fore and hind wings have angulated outer 
margins. 
(Upper Surface.) The ground colour varies from rich 
velvety ruby-brown to deep purple-brown. Some specimens, 
when freshly emerged, have the central portion of the fore 
wings decidedly darker than the rest of the ground colour. 
On the apical half of the fore wing are two straw-yellow, 
wedge-shaped costal blotches. Both fore and hind wings have 
the outer margins broadly banded with straw-yellow, more or 
less speckled with black ; the band is bordered within by a 
narrower black band, on which is a series of blue spots, 
usually eight in the fore wing and seven in the hind, variable 
in shape, being oval, round, and crescentic. 
( Under Surface.) The ground colour is a dull brown, finely 
but densely reticulated with black, resembling crape ; hence 
the name " Mourning Cloak.” The costal blotches and marginal 
band correspond with the upper side, but are of a dull whitish 
colour and more densely speckled with black, especially the 
angular points. In some specimens a faint median, whitish 
band extends through both wings, produced by white speckles 
and streaks. In all specimens is a whitish discoidal spot 
in both fore and hind wings, but larger in the latter. 
The colour of the marginal band varies from pale straw- 
yellow to rich tawny-yellow ; in some the band is almost 
