340 THE CA.NADIAN ENTOMOLOGIST. 



skin appears as dark brown. The tubercles are black and shiny, ii with a 



polished base as in last stage. The dorsal stripe is now inconspicuous, in 



fact it is only the dark brown skin of the body showing against the black 

 tubercles which gives the appearance of a stripe. Spiracles and feet same 

 as in Stage III. 



Soon after Oct. 5 the larvae were placed out of doors for the winter. 

 They were put in large glass jars which contained dried leaves, among 

 which the larvse crawled. A cheese-cloth covering was tied to the top of 

 the jar, and this was laid on one side, in the driest place, among a clump 

 of cedars. 



On April 27, 1904, the jar was brought into the office, and it was 

 found that 15 larvfe were alive.- At this date the snow had all disappeared 

 in open places, and none was left where the larvae had hibernated. After 

 being brought into the office they were very quiet, and would not eat 

 anything until the 29th, when some fresh food was sprinkled with water, 

 and by the morning of the 30th the larvae were in splendid condition, and 

 quite a lot of frass was in the jar. Length after coming out of hibernation 

 9 mm. 



On May 3 one larva moulted, and by the 6th nine had moulted. 



Stage V. — Length 12. 5 mm. Head 1.3 mm. wide, black, shiny, slight- 

 ly bilobed; epistoma, median suture and margins of clypeus pale. Dark 

 hairy larvae, darker on dorsum. Tubercles all black, shiny, small, ii large, 

 with a polished base. Dorsal stripe inconspicuous as in last stage. Skin 

 just between the lateral tubercles has a pinkish tinge. Bristles black, 

 finely barbed. Spiracles black. Thoracic feet black, shiny ; prolegs, 

 upper half black, lower half reddish, almost salmon colour. 



On May loth ten specimens moulted. . 



Stage Vr. — Length 16 mm. Head 1.6 to 1.8 mm. wide; same as in 

 Stage V. Skin of body now blacker. In this stage three specimens had 

 a flesh-coloured dorsal stripe, distinct on all segments; the others, with the 

 exception of two, which had no markings, had the dorsal stripe also, but 

 only on the thoracic segments. Tubercles all black and shining as before; 

 iv and lower tubercles bear mostly rusty bristles. All the other bristles on 

 the body are black. Spiracles black. Thoracic feet mostly brown, blacker 

 towards base, shiny; prolegs, upper half black, lower half reddish. Later 

 in the stage the skin of body below the spiracles changes to brownish, 

 with a purplish tinge. 



