The eggs of the spring species are oval in outline and are laid in 

 sheltered situations in irregular clusters. The eggs of the fall species 

 are in the form of a truncated cone and are laid in exposed places in 

 regular clusters. 



The caterpillars of the spring species have but two pairs of abdom- 

 inal legs, while those of the fall species have three. 



The first seven abdominal segments of both sexes of the moth of 

 the spring species bear two transverse rows of short, stiff, reddish 

 spines which point backwards. The abdomen of both sexes of the fall 

 species is concolorous and without spines. 



REMEDIES. 



Most of the means used to hold the Canker Worm in check are 

 based on the wingless condition of the female, and the fact that it 

 passes its transformations in the ground. These consist of obstruc- 

 tions of various kinds placed about the trunks of the trees to prevent 

 the ascent of the females and likewise of the young caterpillars if the 

 eggs are laid below. 



Paper Bands. — The method in most general use is to paint belts of 

 paper fastened about the trunks of trees with some sticky substance 

 such as printer's ink or tar softened with oil. The use of the paper 

 is to prevent injury to the bark. As the efficiency of this method 

 depends entirely upon its thoroughness, great care should be taken 

 not to leave the slightest crevice between the band and the bark 

 through which the moth or the exceedingly small, newly-hatched 

 larva might find its way, and equal care should be observed to keep 

 the band constantly moist and also to prevent the encumbered moths 

 from becoming numerous enough to cover the baud and thus bridge 

 it for the next comers. 



That the band should be perfect, the following procedure is 

 advised : First scrape or cut away the bark in a ring a few inches 

 wide about the trunk until it is fairly smooth, taking care not to cut 

 deep enough to injure the cambium which is that part between the 

 bark and the wood. Then bind a strip of cotton waste or batting 

 about this smooth portion. Cover this with a strip of paper seven or 

 eight inches in width, secured in position by numerous tacks along 

 the edges or by a stout cord bound tightly about the middle. Finally 

 apply a liberal coating of the sticky substance to be used about the 

 middle of the paper. 



