THE CANA.DIAN ENTOMOLOGIST. '227 



end at about four fifths the distance from base ; ribs low, narrow, the 

 spaces between flat, and crossed by many fine ridges ; top rounded ; the 

 micropyle is in centre of a rosette of fine cells, outside of which is a ring 

 of larger ones ; color yerow-green. Duration of this stage four days. 



YOUNG LARVA. — Length .07 inch; cylindrical, a little thickest on 

 2 and 3 ; on the ridges of the segments are many black points, each of 

 which gives a short white hair; among these are rounded black tubercles, 

 some of which give long black hairs, but most bear short white clubbed 

 appendages, longest on 2 and 13 ; on 3 and 4 these are in straight cross 

 row, four on either side, the lowest being in line with the spiracles, bent 

 after 4, and to 12, there are three on either side, disposed so as to make 

 three longitudinal rows, of which the sub- dorsal has the appendage on the 

 front ridge, the upper lateral on fourth ridge, and mid-lateral on second 

 ridge ; on 2 are three appendages on either side the mid-dorsal line, two 

 of them at the front, the third behind and between the others ; lower down 

 on same segment are two more in vertical line ; on all segments from 2 

 are two black hairs over feet and legs, and in same line ; color greenish- 

 brown ; head rounded, scarcely depressed at top : color black ; the hairs 

 white. Duration of this stage 4 to 5 days. 



After first moult. — Length .14 inch ; nearly same shape ; the appen- 

 dages present, those on dorsum paddle-shaped, quite broad at top, the 

 thin side running with the long axis of body, those on sides clubbed ; all 

 from black tubercles ; color brown-green ; head more green than body, 

 rounded, depressed ; with many white tubercles and white hairs. Dura- 

 tion of this stage about 6 days. 



After second moult. — Length .2 inch; color yellow-green, thickly 

 covered with a white down ; head color of body. During this stage the 

 larvce became lethargic, and so passed the winter. 



After third moult, in spring. — Length. 36 inch ; color dark green; the 

 basal ridge yellowish, but there is no distinct band ; head as before, yel- 

 low-green. The next moult took place about seven days after the larvae 

 began to feed. 



After fourth moult. — Length .6 inch ; color dark yellow-green ; there 

 is now a band along base, pure white, stained in middle of some segments, 

 usually 3, 4 and 12, with pink : as the stage progresses, the pink appears 

 on other segments and in a few hours rtms through the length of the band. 



MATURE LARVA. — Length i.i inch; shape of Ejirydice and 

 Philodice ; color one shade of yellow-green, the under side a little lighter ; 



