160 THe OTTawa NATURALIST. [November 
tempting food plants, time after time. They have something more 
important to do now, viz: to find a suitable place where they can — 
lay up for the winter. At this time the Hedgehog Caterpillar is full 
grown, and the winter is spent snugly rolled up under a piece of : 
plank, a flat stone, or an old log. The caterpillar, or larva,-is 
shown in the accompanying figure. The tufts of hair at either 
end are jet black, those in the middle of the body bright rust red. — 
On the arrival of spring the caterpillar comes out of hibernation — 
and after again wandering around, it finally selects a somewhat ~ 
similar place to that where it passed the winter, and spins an — 
oblong-oval cocoon composed of coarse silk and the hairs of its — 
own body interwoven. The moth which comes from this cocoon, — 
is a rather sober coloured and heavy-bodied insect of a dull grayish © 
tawny-yellow (Isabella yellow)*, the fore wings being marked with — 
dusky stripes and spotted with black, the hind wings spotted with — 
black, and sometimes flushed with salmon red. There are three 
rows of black spots on the body, one down the centre, and one on 
either side. | 
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Salt-marsh Caterpillar and moth. (Chittenden, Bull.. 43 Dv. of Ent., 
U.S. Dept. Agr.) : 
THE SALT-MARSH CATERPILLAR, Estigmene acrea, Dru.—Early ~ 
in the past century a large hairy caterpillar appeared in destructive 
*“The origin of the term ‘‘Isabella yellow” will I think interest any one 
who looks it up. 
