402 THE CANADIAN ENTOMOLOGIST. 



streaks. Anterior third of thoracic shield mostly white. Trans- 

 verse whitish bands on dorsum not so conspicuous as before. Tu- 

 bercles on body blackish; seta? short; blackish. 



Stage III — Length 13 mm. after moulting. Head 1.1 to 1.3 

 mm. wide, which now may be described as white, mottled with 

 conspicuous dark brown, irregularly-shaped spots, mostly present 

 on upper two-thirds epicranium. Body now pale mauve, above 

 spiracles, venter darker, the whole skin marked with many black 

 spots and streaks. The longitudinal stripes on the body indistinct, 

 except three pale yellow stripes on venter, which are more ap- 

 parent owing to the darker colour of the under surface of body. 

 The transverse bands on dorsum are irregular and broken and in 

 colour pale yellow. Stigmatal band whitish, blotched with yellow, 

 broken, irregular, bordered with a wide blackish band beneath. 

 Spiracles blackish. Thoracic feet dark brown, or black; prolegs 

 concolorous with venter. 



Stage IV (Fig. 2, plate XIV). — Length 21 mm. after moulting. 

 Head 2.0 to 2.2 mm. wide. This stage is much the same as stage 

 HI, but the longitudinal stripes are now all yellow, and the skin 

 is not so heavily marked with black spots and streaks. Transverse 

 dorsal bands on abdominal segments as before. The lower joint 

 only of each thoracic foot is now wholly black, the other joints 

 being mostly white, banded above with black. 



Stage V (Fig. 3, plate XIV).— Length 

 H jy¥^ , A^*'\s^. 26 mm. after moulting. Head (fig. 15) 



if ^f I V '^^ *\ 2-^ ^° ^■'^ "^"^- '^^'''^^' slightly indented at 

 *f f* 'l/ZhS* A "^l' summit, flattened in front; whitish with 

 \f^j/^f Jjm\^\'^^t\f' yellowish tinge; mottled with brown as 

 ' "^ W*^ before; margined behind with black. 



■^ // t^fVi ■*■ »*Q'~ Larvae cylindrical in shape, and. in gen- 

 ^-^j*-^ r eral, the same as Stage IV. Just after 

 (\ ' moulting the longitudinal stripes are 

 plainly visible; as the larvae grow these 



Fie;. 15. — Aho'heiim rach<'Jcc, head of i • i i j- •! i \A'T 



mature laiva (X 33). markings becomc less discernible. W hen 



mature and ready to pupate, the larvai 

 may be described as pale mau\'e or pale yellow — the colour varying 

 in the specimens — with numerous irregularl\'-shaped streaks and 

 spots of brown, venter darker; the markings on the dorsum not so 

 heavy as in previous stages. Tubercles black, very small, of 



