374 THE CANADIAN ENTOMOLOGIST. 



On the 23rd August two live rciualcs and one mule, all of which had 

 just emerged, were placed out of doors in a cage made of wire cloth, and 

 two days later the females laid a large number of eggs. 



On the 2nd September, 80 larv.ne hatched, and by the 4th September 

 35 more had emerged. The description already made of this stage agreed 

 with these specimens. 



The larvse which hatched on the 4th September passed the first moult 

 on the morning of the 9th, and showed no difference from those described 

 in former brood. 



On the 1 2th September one larva passed the second moult, and many 

 others on the following day. These also were the same as the specimens 

 described previously. 



On the 17th September a number passed the third moult, the remain- 

 ing specimens moulting on the i8th and 19th. At this time the number of 

 larvae living was 85, and in this moult, out of the whole batch, 22 specimens 

 showed the dorsal stripe; in three or four of these specimens the stripe 

 was present on segments 3 to 11, inclusive, but in most of the specimens 

 it was only observable on a few of the middle segments. 



On the 25th September a number passed the fourth moult, and by the 

 28th nearly all had moulted. The larv?e in this moult showed no sign 

 whatever of the dorsal stripe, and the description already given above of 

 this stage answers well for this batch. 



On the 4th October some passed the fifth moult, and by the 7th 

 nearly all had moulted. These also corresponded with the description 

 already made. In many of the specimens, however, the rust-red bristles 

 on sides were not so bright or numerous as in the first lot of larva*. 



On the 1 6th October eight specimens passed the sixth moult. At this 

 time — in fact, a few days earlier — the larvpe were very quiet, and had almost 

 stopped feeding, only a very little frass being found each day in the 

 breeding jars. 



On the 1 8th October four more specimens passed the sixth moult. Of 

 these I 2 larvte, only one specimen showed any sign of a dorsal stripe, and 

 in this case the colour of the stripe was just a little lighter than the velvety 

 black of the skin. The riist-red bristles from sides of these specimens 

 were also not so bright or numerous as those already described. The 

 hairs on the face were mostly blackish, and in some specimens none of the 

 dorsal tubercles bore rust-red bristles. 



