THE METAMORPHOSIS OF INSECTS. 241 
frost. Some line this cell with silk, making thus a soft 
covering for the body, and shutting out more effectually 
the cold. Some of the caterpillars accomplish the same 
object by constructing above ground a cocoon specially 
adapted to guard against the cold. This is exemplified 
in the case of one of the largest and most splendid of 
Fig. 187.—The Caterpillar, or Larva. 
L 
our American Moths 
—the Cecropia Moth, 
Fig. 186 (p. 240). It 
is found, as Professor 
Jaeger states, all the 
way from the Canadas 
to the Mexican Gulf, 
and also in all the W est- 
ernStates. Ithas large 
wings, measuring five 
to six inches from tip 
to tip. The scales on 
them, § 397, are dusky 
brown. The borders 
of the wings are richly 
variegated, the anterior 
ones having near their 
tops a dark spot re- 
sembling an eye, and 
both pairs having kid- 
ney-shaped red spots. 
414. In this case the 
caterpillar, or larva, 
Fig. 187, is nearly as 
beautiful in colors as 
the perfect imsect or 
imago. It is of alight 
green color, and has 
coral-red warts, with 
short black bristles, 
over its body. It feeds 
