122 THE CANADIAN ENTOMOLOGIST. 
with but a slightly paler shade at base ; the next row lower down black 
above, with a small portion of their base brownish-yellow, excepting on 
the twelfth segment, where they are all black; but in the next row below, 
ihe spines have a larger portion of their hee brownish- yellow, with a 
small space around the base of each where the same colour prevails. 
Terminal segment with two pairs of black branching spines, one pair 
placed behind the other, the hindermost being a little the shortest. On 
the sides of each of the anterior segments, below the spines, there are 
several shining black tubercles, each emitting a small cluster of short 
black hairs. Spiracles oval, black, edged with a paler shade. 
Under surface dull dark reddish-brown. The fifth, sixth, eleventh 
and twelfth segments each have a transverse row of shining tubercles, 
emitting tufts of short black hairs ; feet black, prolegs have a patch of 
black on the outside at their base, reddish-brown above, and within. 
3efore turning to chrysalis, the colour at the base of the spines 
changed from brownish-yellow to a semi-transparent greenish hue. 
One specimen hung itself up June 9, and became a chrysalis June 
10. From the first, the chrysalis is very dark coloured. The following 
description was taken a few days after the change was effected :— 
Chrysalis.—Length 1.30 inches. Colour brown, spotted and streaked 
with black, the whole surface having a polished appearance as if it had 
been varnished. Head case square above, the flat portion terminating on 
each side in a slightly raised blackish tubercle; a dark line extends 
across from one tubercle to the other, bordered in front and behind with 
yellowish brown. A double ventral row of dark brown or blackish 
tubercles, one pair on each segment; below these there is a second row 
of smaller tubercles of a paler colour along the middle segments, just 
above the spiracles. At the base of the wing cases is a pointed projec- 
tion. Anterior segments raised to a sharp ridge, and the ventral edge of 
the wing cases have a similar ridge along the basal portion. Antennae 
cases dark brown; spiracles oval black. Dorsal region of posterior 
segments dark brown, nearly black. 
On visiting the same locality on the oth of June, three chrysalides 
were found on the under side of pieces of bark which had been peeled: 
off a dead tree, and were lying scattered about. The pupae were found 
attached to those pieces which were lying with their convex side up- 
wards, thus affording a dry and sheltered spot under for the larvae to 
attach themselves to, I then collected a number of such pieces of bark, 
