THE CANADIAN ENTOMOLOGIST. 165 



After Fourth Moult. — Length .36 inch at 12 hours; color in June 

 dark brown, dotted with sordid white on dorsum ; in October more white 

 on dorsum than brown, the white sordid, the brown restricted to lines or 

 narrow stripes, one of which runs with the dorsal spines, and one just 

 inside the base of each upper lateral row ; in both a whitish stripe runs 

 with the upper laterals, and next under that is a broad dark brown band, 

 in the summer larva, darker or more blackish than the dorsal color ; under 

 this band, in June, is a broad brown space much dotted and mottled with 

 whitish, and next a basal whitish stripe ; in the October larva the lower 

 part of side is sordid white, mottled with pale brown to the yellow-white 

 basal stripe ; the June larva is more brown than white, the October larva 

 more white than brown To next moult in June about nine days, in 

 October thirteen days. 



After Fifth Moult. — Length in July .42 inch at 12 hours; as in pre- 

 vious stage in same month, except that the side below the dark brown 

 band is lighter, more white, less brown. 



MATURE LARVA. — Length .6 inch ; cylindrical, even, armed with 

 seven principal rows of short stout tapering spines, one dorsal, three 

 lateral ; the five uppermost rows thickly beset with short stiff brown 

 hairs ; the lower row with fewer, and these are yellowish ; besides these 

 is a row of small, similar spines over feet and along base ; in June the 

 spines are light brown, or yellow-brown in the five uppermost rows, the 

 others yellowish ; in October the spines of all the rows are yellow-green, 

 from yellow bases ; color of dorsum in June brown dotted with whitish ; a 

 narrow whitish stripe runs with the upper lateral spines ; next under this 

 and extending to the lower edge of middle lateral row is a dark brown 

 band, a little dotted with whitish , from this to the whitish basal stripe the 

 side is pale brown, dotted and mottled with whitish ; in October the dor- 

 sum is yellow-white, with three pale brown stripes, one mid-dorsal, one 

 just inside each upper lateral row of spines ; the band as in June, but 

 chocolate-brown ; the lower part of side nearly white, the two or three 

 anterior segments mottled with pale brown ; on 2 is a black chitinous 

 dorsal oval patch, from the front of which black hairs bend over top of 

 head ; under side, in June, greenish-brown, in October, yellow-green ; feet 

 and pro-legs concolored with under side ; head cordate, the vertices 

 rounded, shining dark brown ; most examples have a yellowish bar on 

 each vertex from back to front ; in some this is partly or altogether want- 



