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 



