10 THE CANADIAN ENTOMOLOGIST. 



YOUNG LARVA — Length .08 inch ; cyUndrical, thickest anteriorly 

 and tapering from 2 to 13 ; color ferruginous ; marked longitudinally by 

 many rows of low, conical, black tubercles, each of which sends out a 

 black hair, and a few on the side on anterior segments several hairs ; of these 

 rows four are dorsal, two being close together on either -side of dorsum, 

 and they run from 3 to 13 ; three are lateral, the upper two being on 

 upper and middle part of side, and running from 5 to 12 ; the lower, or 

 infra-stigmatal row, from 2 to 12 ; besides- these are two short rows, one 

 of two small tubercles on segments 3 and 4, placed a little below dorsals, 

 the other of three on 2, 3 and 4, between the lines of the upper two long 

 rows ; on 2 is a dorsal chitinous band, with five concolored tuberculous 

 points and hairs on each side; feet black, pro-legs red-brown ; head obovoid, 

 a little depressed at top, shining black, with many black hairs. 



As this stage proceeded a change in the appearance of the larva took 

 place, and shortly before the next moult this reached its height. The 

 tubercles of the two outermost of the dorsal rows became prominent and 

 conical, the tops crowned by the black shields which at first had been at 

 the surface of the body. Seen lengthwise these two rows now formed 

 elevated, sharp ridges. The tubercles of the two inner dorsal rows rose 

 scarcely if any at all, and were almost within the bases of the other rows 

 and stood a little in advance of them. The tubercles of the second short 

 row on 2, 3, 4 became still more prominent, that on 2 especially, and it 

 was turned forward so that its end was even with the front of the head. 

 At same time one tubercle of the upper lateral row, viz., that on 5, and 

 one of middle row, viz., that on 6, also became prominent, and these five 

 all gave out several divergent hairs from their summits ; so the remainder 

 of second lateral row gave out three hairs, the other tubercles but one 

 hair each. To first moult from 4 to 9 days according to the season. 



After ist Moult — Length .12 inch, same general shape ; color red- 

 brown ; at the outer edge of dorsal area on either side, corresponding to 

 outer dorsal row of first stage, is a row of fleshy appendages, one to each 

 segment from 3 to 13 ; these are thick, tapering, bluntly rounded at top, 

 and from base up are beset with short black hairs ; those on 3, 4, 5 are 

 longest, next those on 11 to 13, the others are short; on the lower part 

 of side on 2 to 4 and on 6 is a demi-row of similar appendages, the two 

 anterior ones longer than any dorsal, and the pair on 2 turned forward so 

 that the tips are about even .with front of head ; on 5, a little above the 

 line above this demi-row, is another but very short tubercle ; over the legs 



