164 THE CANADIAN ENTOMOLOGIST. 



from 5 to 13 inclusive, the dorsals placed on the front of each segment, 

 the sub-dorsals on the posterior part, and all are turned forward exeept on 

 II, 12, 13 ; between these rows on either side from 4 to 12 is a very short 

 hair on the posterior end of each segment ; the number and arrangement 

 of hairs on 2 to 4 is different from that of the succeeding segments ; 2 has 

 a chitinous dorsal patch, long oval, on the front of which are six long 

 hairs bent over the head, and on the rear are four straight short hairs 

 turned back ; below are four short hairs to foot, one above, one below 

 spiracle in vertical line, and two near together before the spiracle ; 3, 4, 

 1 2 have each a straight cross line of long hairs, four on either side the 

 dorsal line and down to middle of side, part of these being in the dorsal 

 rows before spoken of ; below spiracles on 5 to 1 2 are two short hairs to 

 each segment, the posterior one always a little higher than the other ; and 

 a row of short hairs along base, one to each segment from 2 to 13 ; head 

 sub-globose, rather broader than high, slightly depressed at top, the vertices 

 rounded ; color black, smooth ; with a few short fine hairs. To first 

 moult about five days. 



After First Moult. — Length .13 inch at 12 hours from moult ; color all 

 dull yellow-green, with a brown band on upper part of side from 2 to 12 ; 

 armed with longitudinal rows of spines, of which seven are large, one 

 dorsal and three on either side, besides a row along base of much smaller 

 size — in all nine rows ; these spines are concolored with the body, long, 

 slender, tapering, thickly beset with short hairs, the whole forming a dense 

 covering ; on 2 is a chitinous dorsal patch from which spring many black 

 hairs, the front ones long and falling over the head ; under side, feet and 

 legs yellow green ; head obovoid, the top considerably depressed, the 

 vertices rounded; color black, smooth, with many black hairs. Duration 

 of this stage three days. 



After Second Moult. — Length .18 inch at 12 hours; color yellow- 

 green; a faint brown line runs with the dorsal, and another just inside 

 each sub-dorsal row of spines ; a dark brown band on upper part of side 

 from 2 to 12, and on this the tubercles and spines are brown; all others 

 greenish-yellow ; head as before. To next moult five and six days. 



After Third Moult. — Length .24 inch at 12 hours from moult ; scarcely 

 different from last stage described ; the brown lines on dorsum more dis- 

 tinct ; the black band ns before, as are all tubercles and spines. To next 

 moult five days. 



