152 MOTHS AND BUTTERFLIES. 
the back answers to the midrib of the leaf, the oblique stripes 
on the sides look like the main veins, and the green horns closely re- 
semble the notched tip of the leaf. One may readily locate the 
creature by observing the pellets of excrement on the ground under 
the trees, but even when he is known to be on a certain branch he 
is not easily seen. The caterpillars may sometimes be seen on the 
trunks of trees as they are making their way down to the ground to 
undergo their transformations in the soil. The moth is four inches 
or more in expanse and is light brown in color, with lines and mark- 
ings of dark brown, black and gray. 
The caterpillar descends into the ground during August or Sep- 
tember and emerges a moth the next July, when it crawls up the 
trunk of an elm tree, waiting until evening when its wings are suf- 
ficiently strong to enable it to take flight. 
Daremma undulosa. 
Daremma undulosa is a good-sized moth of a brownish-gray color, 
with a few light gray and dark brown or black markings distributed 
as shown in the figure. It is not a rare moth and will sometimes be 
attracted by the collector’s lamp. It is rarely taken about flowers as 
it does not seem to be as partial to sweets as many of the sphinxes. 
A small moth somewhat resembling the preceding in its markings 
is Dolba hyleus. The upper wings are light reddish-brown and gray 
with many black and brown lines. The lower wings are sooty-brown 
