THE CANADIAN ENTOMOLOGIST. 121 



tubercles black, shiny; tubercles ii., iii., iv. and v. as in last Stage, blotched 

 anteriorly and posteriorly with reddish brown. Mostly black bristles from 

 i., ii. and iii., the others silvery; from lower tubercles mostly silvery 

 bristles, only a few black ones. Bristles barbed. Spiracles black, small, 

 close in front of tubercle iv. Feet concolorous with venter, semi-trans- 

 lucent. 



Stage III. — Length 6 mm. Head 0.75 to 0.9 mm. wide ; inside 

 half of cheek dark brown, outer half pale brown; ocelli black; mouth- 

 parts reddish-brown ; some heads much darker than others. In general 

 appearance the larvfe are brownish caterpillars, with a pale blue dorsal 

 stripe. The tubercles are black and shiny ; bristles barbed, from i. and 

 ii. all black, except on thoracic segments, where there are a few silvery 

 bristles ; from iii. and iv. mostly black, a few silvery; from lower tubercles 

 mostly silvery. Tubercle i. small, ii. large and with a polished base. Skin 

 of body from the dorsal stripe to lower edge of tubercle ii. pale brown, 

 with a greenish tinge. Between ii. and iii. the skin is pale greenish- 

 yellow, and between iii. and iv. and below iv. the skin is blotched with 

 brown. Venter greenish. Feet semi-translucent. Segments 11, 12 and 

 13 bear a few very long silvery hairs. 



Stage IV. — Length 8.5 mm. In general appearance dark brown, 

 with a pale, bluish-yellow dorsal stripe. Head i.o to i.i mm. wide, as in 

 last Stage. Tubercles and bristles as in last Stage, some very long slender 

 hairs from segments 12 and 13. Spiracles small, black, close in front of 

 tubercle iv. Later in the Stage the larvaj, under a lens, appear as greenish 

 caterpillars, rather densely blotched and splashed with reddish-brown, and 

 the dorsal stripe loses to a great extent its bluish-yellow colour, becoming 

 rather inconspicuous. The skin along the side just above tubercles iii. and 

 iv. has a yellowish tint. Thoracic feet brownish, rather translucent ; pro- 

 legs concolorous with venter. 



Stage V. — Length 12 mm. Head 1.2 to 1.3 mm. wide, shiny, black, 

 with exception of brov/nish patch just above ocelli. Skin under a lens is 

 brownish, bearing blotches of velvety black. A few days after moulting 

 the blotches are more of a dark purplish shade, or a dull reddish brown. 

 In most specimens the dorsal stripe has disappeared, but in some it is still 

 apparent under a lens. Tubercles as in last Stage ; bristles faintly barbed. 

 The bristles from tubercles i., ii., iii. and upper half of iv. are black, those 

 from lower half of iv., and from v., vi., vii. and viii. pale rusty. Spiracles 

 small, black, close in front of tubercle iv. The two posterior segments 



