142 THE CANADIAN ENTOMOLOGIST. 



blotches, some specimens almost wholly light brown with darker blotches ; 

 margins of clypeus darkened in some specimens, ocelli black, mouth-parts 

 brownish, in some examples light reddish, antennae pale, darkened at tips, 

 hairs on face white, long and slender. Body shaped as before : after 

 feeding, dark green dorsally, pale ventrally. Piliferous warts large, but 

 rather indistinct, hairs white, long and slender, skin smooth and shining. 

 Dorsal vessel dark green, distinct, bordered on each side with two white 

 bands. On segment 2 are the two distinct black spots as before. 

 Spiracles are very small and faint, and are joined by an almost impercep- 

 tible white, hair-like line. Thoracic feet and prolegs concolorous with 

 ventral surface of body, all bearing slender pale hairs. 



On the 14th January three specimens were slightly swollen, and by 

 the morning of the 15th had passed the third moult. 



Stage IV. — Length, 6 mm. The general appearance of the larvue in 

 this stage is the same as in stage III. Head 0.67 mm. wide, small, not 

 quite as large as segment 2, shaped as before, deeply indented at vertex, 

 slight furrow between cheeks, honey colour, with pale brownish blotches, 

 margins of clypeus not so distinctly darkened as before, but slightly 

 furrowed at sides, mouth-parts pale reddish, antennae honey colour, 

 darkened towards tips, ocelli black. On lower side of cheek, close to 

 posterior margin, in line with ocelli, there is a distinct black spot. The 

 whole face bears slender pale hairs. Body tapers slightly towards 

 extremities, as before ; piliferous warts concolorous with body, each 

 bearing a single long, slender, whitish hair. Dorsal area dark green, 

 sides and venter pale green. On segment 2 the two black spots are the 

 same as before, but now appear as if in a small rounded cavity. Behind 

 each of these large spots, almost touching them, is a very small black dot. 

 Segments deeply divided. The dorsal vessel and the double sub-dorsal 

 band are very distinct in this stage. In some specimens the green space 

 between the two bands bordering each side of dorsal vessel is suffused 

 slightly with white. Spiracles whitish, joined by a distinct, slightly wavy, 

 white line. Thoracic feet and prolegs concolorous with venter, all bearing 

 a few slender hairs. The thoracic feet have each two blackish dashes 

 exteriorly. The anal prolegs are extended, giving a bifurcate appearance 

 to the anal segment. 



During stage IV. the larva' increased rapidly in size, and consumed 

 much fuod, and also spun considerable quantities of silk. 



