THE CANADIAN ENTOMOLOGIST. 151 



Stage IT. — General colour dull reddish-brown, with a faint pale 

 dorsal stripe, the food showing through front segments giving a greenish 

 appearance to anterior portion of larva. Head 0.5 mm. wide ; cheeks 

 black ; median suture pale ; clypeus, with exception of centre, pale, as is 

 also space above ocelli. Skin of body surrounding tubercle ii. and lateral 

 tubercles, more or less reddish-brown ; skin at joints of segments green. 

 Ventral surface green. Tubercles black, shiny. The skin between the two 

 tubercles i. shows up against the reddish-brown surrounding ii., as a faint 

 dorsal stripe. Bristles from dorsal tubercles black ; from iv. and lower 

 tubercles pale. On segments 12 and 13 are a fe.\v longer black hairs. 

 Spiracles very small, black, close to tubercle iv. All the feet slightly 

 darker than venter. 



Stage III. — Length 5.5 mm. Head o.S mm. wide, as before. 

 Cervical shield black, shiny. Skin of body much as in last Stage, 

 reddish-brown. Dorsal stripe pale yellow, even, distinct on all segments. 

 Tubercles black, shiny, ii. with a polished base ; bristles barbed. 

 Bunches of black bristles, with a few yellowish ones, from tubercles ii. 

 and iii., only a few bristles from i. Lower bristles from iv. pale yellowish 

 or a reddish tinge, from upper half of iv. black ; from tubercles below iv. 

 all pale. Skin of body between iii. and iv., iv. and v , and below v., 

 reddish. Ventral surface paler than dorsal. Spiracles small and black. 

 Thoracic feet blackish ; prolegs concolorous with venter inside, but 

 blackish outside. 



Stage IV. — Length 7 mm. Head i.o mm. wide, black, shiny, 

 median suture and space on cheek above ocelli, pale brownish ; hairs on 

 face mostly dark. Body dark brownish, mottled and splashed with 

 velvety black. Dorsal stripe reddish-yellow, rather indistinct. The 

 colour of the skin along the sides immediately below tubercles ii., iii., iv. 

 and V. is orange, giving the appearance of series of dashes of that 

 colour. Tubercles as before. Bristles from all the tubercles mostlv 

 black; only a few, comparatively speaking, are pale. Spiracles black, 

 almost touching anterior edge of tubercle iv. Feet as before. 



Stage V. — Length 12.5 mm. Head 1.4 mm. wide, as in last Stage. 

 Skin of body black, with exception of orange red dashes above tubercles 

 iii., iv., V. and vi.; these arc not conspicuous. Dorsal stripe has almost 

 disappeared, only a faint trace of it now. Tubercles black, shining, ii. 

 with a polished base. Venter not so dark as dorsum. Spiracles black, 

 close in front of tubercle iv. Bristles from tubercles i., ii. and iii. black, 



