GIANT SILK-WORMS. 12} 
Both the front and hind-wings of the adult (Fig. 123, 
Plate XIII) are of a rich brown, the anterior pair grayish, 
shaded with red, the posterior more uniformly brown, and 
about the middle of each ot the wings is a nearly kidney- 
shaped white spot, shaded more or less with red, and mar- 
gined with black. A wavy dull-red band crosses each of the 
wings, edged within with white, the edging wide and distinct 
on the hind-wings, and more or less faint on the front pair. 
The outer edges of the wings are of a pale, silky brown in 
Fig. 122.—Attacus cecropia Linn.; caterpillar. After Riley. 
which, on the anterior pair, runs an irregular dull-black 
line, which on the hind-wings is replaced by a double broken 
band of the same hue. The fore-wings, next to the shoulders, 
are dull red, with a curved white and black band, and near 
their tips is an eye-like spot with a bluish-white crescent. 
The upper side of the body and the legs are dull red, with a 
wide band behind the head and the hinder edges of the rings 
of the abdomen white; the under side of the body is also 
marked with white. 
The cocoon is about three inches long and an inch or 
more broad in its widest part, pod-shaped, of a rusty gray 
or brownish color; it is formed of two layers of silk, the 
outer one not unlike strong brown paper, and within this a 
quantity of loose silken fibres covering an inner, oval, closely 
Woven cocoon, containing a large brown pupa. Snugly en- 
closed within this double wrapper the pupa remains unin- 
