104 MOTHS AND BUTTERFLIES. 
this locality in half a day. The moth emerges about the 20th oi 
June, usually in the morning; and by evening its wings are rigid 
and it is ready to take flight. As these moths take no nourishment 
their lives are very short after reaching maturity. Resting hidden 
5 
Swamp and upland forms of cocoons of Attacus ceeropia. 
by day among the leaves, the males sally forth at evening in search of 
their mates guided by their keen sense of smell, and having insured 
the continuance of the species for another year, they soon perish. 
This insect inhabits a large part of the continent east of the 
Rocky Mountains. In Colorado, Utah, California and the far West 
generally its place is occupied by closely allied forms, very large and 
heavy-bodied insects, in which red and dark brown colors predomi- 
nate. Two or three species of Attacus from Mexico are interesting, 
from having a transparent almond-shaped spot in the centre of each 
wing. One of these, Attacus splendens, is a lovely creature, on 
whose wings pink, brown, purple, black and white are mingled, 
making a very pleasing combination. There is frequently great 
variation in the coloring of these moths. 
Attacus cynthia is a species which has been introduced into this 
country and Europe from China, and may now be found in a wild 
