102 THE CANADIAN ENTOMOLOGIST. 
obtuse at the ends, with its greatest diameter a little before the middle. 
Colour white, with a faint yellow tinge and a smooth, glossy surface, semi- 
transparent. The enveloping membrane is very thin and easily ruptured, 
discharging watery looking contents. Only seven or eight eggs were 
obtained from the body of the female examined ; possibly it:might have 
previously deposited most of its stock. The eggs are buried beneath the 
skin of the leaf, close alongside of the ribs and veins, placed there by 
means of the saw-like apparatus with which the female is provided, where 
it swells somewhat and produces a slight discoloration of the cuticle on 
the upper surface. The skin covering the under surface of the swelling 
is so thin and semi-transparent that the movements of the larva may be 
observed a day or two before hatching, by the black spots on the side of 
the head showing through. ‘The larva escapes through an irregular hole 
made on one side of the swelling. 
The young larva as it appears when fresh from the egg. Length, when 
in motion, about one-twelfth of an inch. Head large, semi-transparent, 
greenish-white, with a large black eye-like spot on each side and with a 
number of short whitish hairs ; mandibles pale brown. 
The body above is nearly white, semi-transparent, and thickly covered 
with transverse rows of white spines, nearly all of which are forked 
towards the tip ; some of the spines on the anterior segments are more 
compound, having four or five branches ; the tips of all the branches of 
the spines are blunt, nearly rounded. ‘The under: surface is similar to the 
upper in colour and semi-transparency, feet and prolegs partake of the 
general colour. ; 
After the first moult the head is medium sized as compared with the 
body, of a pale yellowish green, covered with short fleshy looking hairs 
of the same colour. The body above is of a uniform pale greenish-yellow 
colour, excepting along the dorsal region, where, owing to the transpar- 
ency of the skin, the internal organs show through of a deeper shade of 
green. ‘The surface of the body is thickly set with short greenish-yellow 
tubercles, most of which are forked at the tips, the two branches spreading 
in opposite directions, the greater portion of them extending anteriorly 
and posteriorly. Out of three specimens of this age examined, one 
varied from the others in having a pale brownish-yellow head. The under 
surface, feet and prolegs all pale greenish-yellow. 
With the subsequent moultings slight changes take place in the colour 
of the head, first pale brownish or greenish-brown, then bluish-green, and 
