118 THE CANADIAN ENTOMOLOGIST. 



Stage II. — Length 3 mm. Head 0.410 0.45 ram. wide, black, shiny, 

 sh'ghtly bilobed ; moulh-parts reddish. Body pale brownish, the green 

 food contents showing slightly, more or less, through the skin. Tubercles 

 all shiny black, and large, with exception of i., which is very small; each 

 tubercle but i. bearing a bunch of barbed bristles, those from the dorsal 

 tubercles black, others silvery, or whitish. All the segments are marked 

 with reddish brown blotches and spots. Spiracles black, very small, 

 almost touching tubercle iv. Thoracic feet darker than venter and rather 

 translucent ; prolegs paler than venter, setse short and pale. 



Stage III. — Length 6 mm. Head 0.6 to 0.67 mm. wide, black, shiny. 

 In general appearance the larvas may be said to be black, with pale, slightly 

 yellowish, dorsal, lateral and stigmatal stripes. On examination with a lens, 

 however, the skin is seen to be pale, but thickly mottled and suffused with 

 dark brown. All the tubercles are shiny black, and, with the exception 

 of i., large. Tubercles as before, ii. with a polished base. Bristles black, 

 with exception of those from lower lateral tubercles, which are pale. 

 Tubercles on dorsum of segments 12 and 13 bear a few extra long 

 bristles. Thoracic feet shiny black ; prolegs concolorous with venter ; 

 setcG pale and short. Towards the end of the stage the larvae lose their 

 dark colour, changing to a reddish brown. 



Stage IV. — Length 7.5 mm. Head 0.9 to i.o mm. wide, black. In 

 general appearance black larvje with black bristles, and a pale yellow 

 dorsal stripe, also an indistinct lateral stripe. The skin on the sides of 

 body shows some green, the venter being paler. Tubercles black, bristles 

 barbed, from all tubercles above spiracles pure black. Bristles from lower 

 tubercles mostly pale, rather reddish. Dorsal stripe clear pale yellow, 

 expanded almost into a spot on the middle of each segment. Spiracles 

 small and black. Thoracic feet shiny jet black, prolegs concolorous with 

 venter. 



Stage V. — Length 10.5 mm. Head 1.2 mm. wide, black, cheek 

 above ocelli brown ; epistoma pale. Body black ; dorsal stripe as in last 

 Stage, skin between tubercles ii. and iii. yellowish. Tubercle i. small, ii. 

 large, both i. and ii. black, ii. with a polished base ; iii., iv. and v. are now 

 partly brownish yellow, vi.. vii. and viii. wholly black. Skin of body below 

 tubercle ii. not so black. Spiracles small, black, round, just in front of 

 tubercle iv. liristles from tubercles as before, but the pale bristles below 

 si)iracles, in some specimens, do not show any red. Thoracic feet as 

 before ; prolegs, upper portion shiny black exteriorly, paler below. 



