60 ROYAL SOCIETY OF CANADA 
cylindrical, pale green, semi-translucent; segment 12 raised as in Pyro- 
phila pyramidoides, Gn. Dorsal stripe whitish, in some specimens pale 
bluish. Lateral stripe of same colour. Stigmatal band whitish. 
Tubercles black, small, rather indistinct; seta short. Spiracles imme- 
diately in front of tubercle iv, small, round, pale, ringed with black. 
Feet almost concolorous with body. | 
Stage IIT.—Length 9 mm. Head 0.9 to 1.0 mm. wide. The 
differences between the larvæ in this stage and in last stage, are that the 
stigmatal band is now bordered above with a conspicuous blackish band, 
(towards the end of the stage, however, this band becomes much less 
conspicuous) and the whole skin above the spiracles is spotted and 
streaked with whitish markings. 
Stage IV.—Length 12 mm. Head 1.3 to 1.5 mm. wide. Larve 
in general much the same as in Stage III. The spots and streaks of 
white about the spiracles are now rather larger and plainer. Dorsal 
and lateral stripes faintly bordered with dark green. Border above 
stigmatal band dark green, but in some specimens almost blackish. On 
each segment bearing abdominal feet, there is on either side, a short 
oblique dash, or ,band, running a little over half way down, from the 
stigmatal band to each foot. Spiracles whitish, ringed with black. In 
a few larve the U-shaped marks which appear on dorsum in the stages 
following, are faintly discernible. Feet paler than venter and rather 
translucent. 
Stage V.—Length 18 mm. Head 1.8 to 1.9 mm. wide, pale with 
the brown spots, more or less joined together, giving a reticulated 
appearance. Body pale green; dorsal stripe also pale green. If it were 
not for the dark green bordering each side of the dorsal stripe, this latter 
would hardly be discernible. Lateral stripe has almost disappeared and 
is only to be seen on account of the dark green border. Stigmatal band 
which runs to base of anal feet, not nearly so conspicuous as in previous 
stages, and in some specimens would hardly be noticed, were it not for 
a dark green stripe which runs along the upper edge. The short oblique 
dashes from the stigmatal band, towards the abdominal feet are still 
present, and in some examples very plain. Some larve are of a darker 
green, and in these the dorsal stripe and the stigmatal band, are very 
conspicuous. Spiracles whitish, ringed with black. On the dorsum are 
numerous short green, wavy streaks, and from segments 5 to 12, inclu- 
sive, a series of U-shaped marks; these of a dark green colour. 
Segment 12 raised as before. Thoracic feet semi-translucent, shiny; 
prolegs concolorous with venter. 
Stage VI.—Length 25 mm. Head 2.5 to 2.8 mm. wide; rounded, 
slightly indented at vertex; pale greenish, heavily reticulated with brown ; 
in some specimens almost the whole head is brown; ocelli black; hairs 
