THE CANADIAN ENTOMOLOGIST. 57 



AFTER THIRD FALL MOULT.— Length .3 inch.; the dorsum 

 light brown, edged with faint white at the ist lateral row of spines, the 

 brown area showing two macular white streaks ; below ist laterals, a black 

 stripe, the remainder of the side brown ; a white ridge with 3rd laterals • 

 spines generally brown, the bristles same, black-tipped ; head sub-cordate, 

 shining black ; with a gray, illy-defined spot on each vertex, and another 

 on each side of face ; some gray points also back of the last. 



AFTER FOURTH MOULT, IN SPRING.— Length .44 inch. Body 

 yellow-brown, dotted with yellow-white ; the spines short, stout at base 

 blunt at top, yellowish at base, brown above ; the bristles short, divergent, 

 brown, black-tipped ; along the dorsal row a black stripe ; a yellow stripe 

 runs with ist laterals, usually broken and somewhat irregular, most con- 

 tinuous on either side of each spine ; a yellow band in line with 3rd 

 laterals ; head small, cordate, bronze or black, shining, with a few black 

 hairs ; across each vertex a narrow yellowish bar ; a yellow triangular spot 

 on front lower face, at the lower angles connecting with a curved yellow 

 bar which runs to the back of the head. 



AFTER FIFTH AND LAST MOULT, IN SPRING.— Length .6 

 inch. Color blackish-brown, dotted, especially on dorsum, with yellow ; 

 the spines more tapering, stout at base, blunt at tip, mostly yellowish at 

 base ; the bristles brown, black-tipped ; on dorsum a black stripe, but 

 often wanting ; a yellow stripe in line with ist laterals, and a yellow band 

 below 3rd laterals ; in some examples there is a black stripe between ist 

 and 2nd laterals ; head bronze, shining, with black hairs ; across each 

 vertex a narrow whitish bar, thickened at the front and bluntly barbed on 

 outer side ; in front a triangular spot, connecting at the lower angles with 

 a sickle-shaped bar on side, both yellowish. In other respects like 4th 

 summer moult. Length at maturity .85 inch. 



AFTER THIRD SUMMER MOULT.— Length .45 inch. Color 

 olive brown ; the dorsum much specked and dotted with dull white ; a 

 dull white stripe in line with ist laterals, and a band of same color below 

 spiracles, above which is another band, rather indistinct, whitish, macular ; 

 under side dark brown ; the spines brown, light tipped, many with yellow, 

 sometimes orange bases; the bristles black; head cordate, bronze; a 

 straight silvery bar across each vertex ; a triangular white spot in front, 

 connected with a curved white line on either side, and white on the man- 

 dibles. To next moult 3 to 5 days. 



