THE CANADIAN ENTOMOLOGIST. 107 



black ; hair black. Later the body becomes more brownish, blackish 

 around the black warts and a pale dorsal line is seen. This stage lasted 

 four days. 



Third stage : Head semi-transparent, pale brownish ; a darker shade 

 at the vertex; maxillae reddish; ocelli black; width .9 mm.; cervical 

 shield and legs black ; body light reddish brown except the dorsal warts 

 on joint 4, joints 5 and 6 entirely, and joints 8, 9, 10 and 11 in the 

 subdorsal space, which are black ; a white dorsal line ; bristles spiny 

 and sharp, black. Duration of the stage six days. 



Fourth stage : Head shining pale brownish ; the mouth parts paler ; 

 ocelli black ; width 1.4 mm. Body reddish orange with a slightly paler 

 dorsal line ; joints 5, 6 and 9-1 1 are black, the latter in the subdorsal 

 space only, and most of the warts are black. The length of the larva is 

 about 10 mm. Duration of the stage six days. 



Fifth stage : The markings of the mature larva are now assumed. 

 Head brown, blackish in front ; ocelli and inside part of the jaws black ; 

 labrum and antennse pinkish ; width 2 mm. The body is marked as in 

 the mature larva, black with transverse Vermillion bands, except that 

 there is a faint pale dorsal line anteriorly. 



Sixth stage : As in the preceding stage. The width of the head is 

 2.8 mm. and the dorsal line is reduced to a mere trace. Feet reddish 

 and spiracles ochre. 



Seventh stage : Head irregularly black in front, brownish at the sides 

 and vertex ; mouth parts and antennae reddish ; width 4 mm. Body as 

 in the mature larva, except that the transverse bands are lighter red. 

 Length of larva 45-60 mm. Duration of the stage nine days. 



Eighth stage : Head brownish black with a pale line in the suture at 

 vertex and a pale spot on the side posteriorly ; labrum and antennse 

 salmon colour ; jaws brown ; width 5.3 mm. Cervical shield straight in 

 front, curved behind, bisected by a pale line ; body velvety black except 

 a transverse vermillion band on each segment in the intersegmental 

 incisures on joints 5-1 1 inclusive, concealed when the body is contracted. 

 Thoracic feet brownish red, abdominal feet brown, the lower part salmon 

 colour and the claspers whitish ; spiracles dark orange ; bristles spiny 

 and sharp, black. Length of larva S5-95 mm. at maturity. Duration 

 of this, the last stage, eleven days. 



