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THE STUDY OF INSECTS. 
trees to oviposit as do the females of the Canker-worms. 
The female is represented in the lower left-hand part of the 
figure. She is grayish in color, with two black spots on the 
back of each segment except the last, which has only one. 
The male has buff fore wings, with a central spot and a band 
beyond the middle, while the hind wings are much lighter. 
This insect can be combated by the same methods as are 
used against canker-worms. 
Family HYDRIOMENIDS (Hyd-ri-o-men'i-das). 
The Hydriomenids {Hyd-n-o-me’nids). 
The Hydriomenids are easily recognized by the structure 
of their wings. In the fore wings the branches of radius 
