CERATOCAMPA imperialis'. 159 
tlier the appearance of the caterpillars, chrysalides, 
nor the form of the wings in the perfect insect, will 
fully authorise this, and wo have accordingly given 
another generic designation to the latter. 
The antennaa of C. imperialis are reddish-brown ; 
head, thorax, and abdomen yellow, the two latter 
with various clouds and spots of light reddish-brown 
with a purple gloss. The upper wings are of a 
beautiful bright yellow, with several large patches 
and numerous small rounded spots of reddish-brown 
glossed with purple sprinkled over the surface ; the 
dark clouds vary somewhat in their size and form, 
but commonly there is a broad patch occupying the 
external margin of the wing, from which a curved 
band runs down the middle and turns forward to 
the anterior edge near the centre, from which it 
follows the margin to the base ; the w r hole of the 
latter is occupied by a large cloud. The ground 
colour of the hinder wings is likewise bright yel- 
low, with a purplish-brown cloud near the base, a 
brown eye with a small light spot in its centre on 
the disk, and beyond that an undulated bar of 
purple-brown ; there are likewise many irregular 
specks scattered over the surface, most numerous 
beyond the transverse bar. The under side is of the 
same bright yellow as the upper, with sprinkled 
spots of brown, each wing with a reddish-brown 
eye in the centre, that on the upper wings having a 
round brown spot above it ; all the clouds, however, 
have disappeared, except that along the exterior and 
anterior margins. Expansion of the wings from 
