THE CANADIAN ENTOMOLOGIST. •">7-"' 



without shining base. Bristles smooth, not barbed. Stigmata bright 

 orange. 'I'horacic feet shiny, jet black, dull brownish at tips, and sparsely 

 covered with rust-red bristles, some short and some long. Prolegs, upper 

 two-thirds shiny, jet black; lower third and claspers light rust-red, covered 

 sparsely with short, reddish bristles. 



Length of mature larva before spinning cocoon 30 mm., width at 

 widest part 8.5 mm. 



On the 26th July one larva passed the sixth moult, and showed the 

 clear ochre-yellow dorsal stripe (rather faint on segments 2, 3 and 13). 

 Another moulted the same day, and in this specimen, instead of the 

 dorsal stripe, occurred a series of elongated ochre-yellow spots, one on 

 each segment, from segment 4 to j2, inclusive. On the 26th July, also, 

 seven more specimens passed the sixth moult, the ochre-yellow varying 

 in these specimens from very faint elongated spots only on one or two 

 segments, to a distinct dorsal stripe, faint on segments 2, 3 and 13. On 

 the 28th one larva moulted, and in this instance the dorsal stripe was 

 distinct, but only present on segments 8 to 12, inclusive. In this, the 

 sixth and last moult, out of the whole batch of 64 larva?, only i 7 speci- 

 mens showed the ochre-yellow on dorsum ; the remaining 47 were 

 perfectly black, and no dorsal stripe or spots whatever were present. 



On the ist August eight specimens began to spin their slight cocoons 

 between the leaves, and on the following day changed to pupa?. In some 

 later specimens it was two days before the pupa was formed, but in the 

 majority of the specimens the change took place the following day. 



The cocoon is very thin, and is simply a slight network or web of 

 reddish-brown silk, covering the pupa. The larva draws the leaves of the 

 food-plant together by means of threads of silk, or folds up a leaf, fastening 

 the edges together, and spins its slight cocoon inside. 



Pupa. — Length 19 mm., width at widest part 6 mm. ; black slightly 

 pruinose, abdomen minutely pitted, thorax and wing-cases slightly 

 wrinkled, dull reddish-brown in folds of abdomen. Cremaster rough and 

 short, rounded above and hollowed below, terminating in a bunch of 

 about 20 capitate bright rust-red bristles of varying lengths. 



On the morning of the 13th August four female moths emerged, and 

 by the following morning five more females had appeared. During the 

 afternoon of the 14th the first male moth emerged. The moths continued 

 to emerge every day for about a week and a half 



Length of pupal stage about 12 days. 



