THE CANADIAN ENTOMOLOGIST. 14 



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On the 19th January one larva passed the fourth moult, and others 

 on the 2 1 st and 22nd January. 



Stage V. — The general appearance of the larvae in this stage is the 

 same as in the last two stages. Length at rest, n mm. Head 1.0 to 

 1.1 mm. wide, large, about the same width as segment 2, shaped as before, 

 deeply indented at vertex, and slightly furrowed between cheeks, pale 

 honey colour, splashed with light brownish angulated blotches, which are 

 larger than in stage IV., and mostly on cheeks. Mouth-parts pale reddish 

 brown, antennae pale, darkened at tips, ocelli black. The distinct black 

 spot on the lower side of cheek, near posterior margin, is not now present, 

 but close to where it was is a large elongated brownish blotch. Hairs on 

 face and around mouth-parts pale and slender. Shape and colour of body 

 as before ; segments not so deeply divided as in last stage. The two 

 large black spots on segment 2 are as before, as are also the two small 

 black spots, observed in last stage, close behind these. In some speci- 

 mens these latter spots are hardly visible, and in a few larvae the large 

 spots appear as if simply expanded slightly posteriorly. The piliferous 

 warts resemble small swellings, and, being concolorous with body, are 

 indistinct, unless examined with a lens. The large lateral warts on seg- 

 ment 2, just above the thoracic feet, bear a \'ew brownish blotches. The 

 dorsal vessel, the double sub-dorsal band, and the slightly wavy line join- 

 ing the spiracles, are as before, but are faint on segments 2, 3, 12 and 13. 

 The spiracles are small and whitish, slightly darkened at edge. The 

 thoracic feet are concolorous with ventral surface of body, and bear two 

 blackish-brown dashes exteriorly, prolegs pale ; all the feet bear slender 

 hairs. Anal prolegs divergent. Position of tubercles normal, except 

 that ii is almost exactly in a line posterior to i. 



When mature, the larvae at rest measure 15 mm. long, and when 

 extended, 18 mm. 



On the 29th January one larva folded a leaf over, preparatory to 

 changing to pupa. On the 30th January the folded portion was sealed, 

 and by the 1st February the larva had changed to pupa. Another which 

 began to spin its cocoon on the 30th January had changed to pupa 

 by the 2nd February. In the remaining specimens the period covering 

 the change of the larvae to pupae agreed with the above two. 



When forming its cocoon, the larva simply folds over a portion of 

 a leaf, and fastens it with threads of fine white silk, or choosing a central 

 portion of a leaf, draws down another leaf to serve as a covering, and 



