THE CANADIAN KNTOMOLOGiS'r. 90 



Stage III. (interpolated) — Head shining black, clypeus and mouth 

 brown ; width .55 mm. Warts large, black, hairs short, bristly, black 

 and white. Body elongated, broadly whitish between warts ii., fading to 

 smoky black in the region of wart iii.; below this another pale band, 

 marked with yellow, transversely annulated streaks behind wart iv., two 

 on each segment ; subventral region shaded with brown. Leg plates 

 black. Later the appearance is more as in the next stage, though the 

 bands are not really defined. 



Stage IV. (interpolated) — Head black; width .65 mm. Body 

 black, a broad diffuse dorsal gray line, joining a narrower subdorsal one. 

 Region of warts iii. and iv. yellow spotted, joining a substigmatal gray 

 band and subventral gray marks. Warts black ; hair short. 



Stage V. (normal HL) — Black ; head .75 mm. Pale whitish dorsal, 

 subdorsal and substigmatal lines, the subdorsal faintest; bright yellow 

 superstigmatal line, not perceptibly joined to the substigmatal one. 

 Warts black. 



Normal Stage V. (from Mr. Foulks; after hibernation) — Head shin- 

 ing black ; width 1.7 mm. Body black; dorsal line broad, subdorsal 

 faint, stigmatal broad, substigmatal fainter, yellow, traces of a line subven- 

 trally, all more or less white spotted. Essentially as in the next stage. 



Stage VI. — Head and warts shining black, the latter bluish ; width 

 2.7 mm. Body deep black, the dorsal line broad, straight, narrowly 

 broken in the incisures and centre of the segments, yellow, darker yellow 

 or red in the centre of each segment, faint on joint 2. Traces of a sub- 

 dorsal band, broken by wart ii., whitish, mottled. Lateral band broad, 

 indented by warts iii. and iv., broken into three or four spots on each 

 segment by transverse black lines, yellow, irregularly stained with darker 

 yellow, connected inferiorly by mottlings and dots with a narrow sub- 

 stigmatal line which is yellow, mottled, broken and runs between warts 

 iv. and v. Traces of a subventral line between warts v. and vi, on the 

 base of each leg. Leg plates black. Venter broadly pale gray, blackish 

 dotted. Hair very short, inconspicuous, black or black and white, stiff, 

 pointed, not barbuled. In some individuals the subdorsal whitish dots 

 are absent, and in some the dorsal band is distinctly marked with red ; 

 otherwise there is very little variation. Corresponds well with Saunders's 

 description of reversa (Can. Ent., L, 20), and also with Riley's of fiilvi- 

 costa (Third Report Ins, Mo., 134). The forms colona and consdta have 

 not been br^d. 



