28 



THE CANADIAN ENTOMOLOGIST. 



bright yellow stripe which is most distinct on the hinder segments, and a 

 second one of the same color, but fainter, half way between this and the 

 dorsal line ; this latter is more distinct on the posterior portion of the 

 body, where it follows the peculiar pyramidal hump or prominence on the 

 twelfth segment, as shown in the figure. The under surface of the body 

 is pale green. 



When full grown this caterpillar descends to the ground, and, drawing 

 together some loose fallen leaves or other rubbish, spins within a loose 

 silken cocoon, where in due time it changes to a dark, shining brown 

 chrysalis, from which the moth usually escapes in the latter part of July ; 

 those which we have reared have appeared about the 20th of the month. 



The moth, see figure 4, measures, when its wings are expanded, about 

 one and three quarter inches. The fore wings are dark brown, shaded 



with paler brown, and with dots and 

 wavy lines of a glossy grey or dull 

 whitish hue. The hind wings are red- 

 dish with more or less of a coppery 

 lustre ; browner on the outer angle of 

 the front edge of the wing, and paler 

 towards the hinder and inner angle. — 

 The body is dark brown with the hinder 

 portion banded with lines of a paler shade. The under surface of the 

 wings is much lighter in color than the upper. 



In what stage of its existence this insect passes the winter months has 

 not yet been determined. Whether the eggs, which are probably laid 

 during August, remain dormant during the remainder of the summer and 

 hatch early the following spring, or whether the eggs hatch into larvae 

 early in the fall, and the larvae, while still young, become torpid and sleep 

 through the long winter months, remains undecided ; we incline, however, 

 to the latter view. 



Where the caterpillars prove troublesome their numbers may be 

 lessened by jarring the trees or vines on which they are feeding with the 

 hand, when they will usually drop to the ground, where, on account 

 of their green color, they can be readily seen and destroyed. 



