182 PESTS OF GARDEN AND FIELD CROPS 
Fic. 217. —The Salt-marsh Caterpillar. Original. 
ate numbers. When very abundant, spray with Paris green and lime, 
making the dose quite heavy as the caterpillars are resistant. 
Fig. 218.— Adult of the Salt- 
marsh Caterpillar. Original. 
pillar, [sia isabella S. and 
A., is thickly covered with 
close-cropped soft hairs, 
brownish red along the 
middle of its body and black 
at either end. 
Control of these two 
species is the same as for 
the yellow-bear caterpillar. 
Neither is apt to be abun- 
dant enough to be a serious 
pest. 
The Salt-marsh Cater- 
pillar, Estigmene acrea Dru., 
is another hairy caterpillar 
closely paralleling the above 
in appearance and habits. 
Its body is darker, and 
there are yellow markings 
on each side. 
The Hedgehog Cater- 
G. 219.— The Hedgehog Caterpillar. 
Original. 
