THE CANADIAN ENTOMOLOGIST. 141 



the hairs whitish and slender. Skin of body smooth and shining. Tho- 

 racic feet and prolegs concolorous with body, all bearing short whitish 

 hairs. After feeding, the colour of the green food contents gives the 

 young larva; a light greenish appearance. 



The young larvae feed on the under side of the leaves, and eat little 

 holes into the soft tissue. When at rest they curl the head and front 

 segments around to the side of the body, and if disturbed, fall and hang 

 suspended on silken threads. When settled on a leaf, the young larva 

 spins a few threads of delicate silk, from one portion of the leaf to 

 another, feeding and living inside this slight, almost transparent enclosure. 



On the 28th December one larva passed the first moult. Before 

 moulting (a day or so), its colour changed, becoming very pallid. On the 

 29th December two more larvae passed the first moult, and by the 

 morning of the 31st December, eleven specimens had moulted. 



Stage II — Length, 2.5 mm. General appearance, shiny, semi- 

 translucent, creamy larvae, with a greenish tint, some specimens whitish ; 

 after feeding, dorsal surface distinctly green ; body bearing long whitish 

 hairs. Head 0.27 mm. wide, indented at vertex, rather flattened and 

 horizontal, and shaped as before, shining, blackish-brown, in some 

 specimens light brownish mottled with darker spots, margins of clypeus 

 distinctly darkened, ocelli black, mouth-parts brownish, the face bearing 

 slender light hairs. Body cylindrical, tapering slightly towards extremities, 

 segments deeply divided, skin smooth and shining. Green dorsal vessel 

 distinct, on either side of which are two very faint bands. Tubercles 

 piliferous, larger and more noticeable than in last stage, the hairs long 

 and slender. On segment 2 are two distinct black spots, one on each 

 side, at margin of dorsal area. The thoracic feet and prolegs are 

 concolorous with ventral surface of body, and bear slender pale hairs. 



On the 7th January two larvae were swollen and the next day they 

 passed the second moult. Other specimens moulted on the 9th and 10th 

 January. 



In this moult, as in the previous one, the cast skin and head remain 

 united, and look as if the larva had simply shrunk and dried up. 



Stage III. — Length, 3.5 mm. General appearance, shiny, semi- 

 translucent, pale green larvae, with a green dorsal vessel and faint stripes 

 down the back, the body bearing slender whitish hairs. Head 0.4 mm. 

 wide, shaped as before, deeply indented at vertex, slight furrow between 

 cheeks, pale brownish-yellow, rather translucent, mottled with brown 



