156 THE CANADIAN ENTOMOLOGIST. 



resemblance with the next family " ( Nepticulidce), " but the larvse have 

 six well-developed true legs." — Ins. Brit., v. 3, p. 290. The six legs seem 

 to have been Mr. Stainton's chief, if not only reason, for excluding Biiccu- 

 latrix from I^epticulidce, in which the six true legs " are wanting, and they 

 are replaced by membranous processes or prolegs, yet neither on these 

 segments nor on the remaining segments, each of which is furnished with 

 a pair of prolegs (making eighteen in all), have the prolegs the usual 

 coronet of little hooks" (Ibid, p. 296). Dr. Clemer.s says of £. pomi- 

 foliella that the legs are " very small," and though this can not be said of 

 B. ambrosiafolieUa, yet its anal prolegs are destitute of the coronet of little 

 hooks, having only a single little spine ; while the abdominal prolegs have 

 each only these little claws, rather than the usual tubercles ; so that I do 

 not hesitate to place Biicculatrix in the same larval group with Neptiada. 

 The thoracic feet have each a single claw which is set around with numer- 

 ous, rather stiff, bristles, and, as hereafter shown, are used to guide the 

 thread in spinning the cocoon. Each segment of the body is clothed with 

 numerous hairs, especially the pro-thoracic segment, where the hairs are 

 stiff and project forward over the head ; this segment in the adult larva 

 has twelve microscopic redbrown spots, ten of which are on the back — 

 four of them in the angles of a square, three others obliquely on each side 

 of the square, and one other, larger but more indistinct, on each side ; 

 these spots I think are hypodermal. 



The egg, a minute colorless globule, is deposited on the upper surface 

 of the leaf, and the larva, leaving it, makes at first a short, tortuous, linear 

 mine, which ends in a small blotch with the frass in compact lines. The 

 first stage lasts probably between three and four days (the youngest larva 

 I have seen was a little more than one-fortieth of an inch long). The 

 larva at this stage is sordid white. Having ceased to feed, it doubles 

 itself in what Mr. Stainton calls horse-shoe shape, the ventral surface of the 

 anterior half being applied to that of the posterior half of the body, and 

 thus it undergoes its first moult in the mine. The larva, when it has cast 

 its old skin, is no longer sordid white, but is striped longitudinally ; there 

 is a dorsal green stripe, margined on each side by a white line, beneath 

 which is another green stripe on each side, containing on each segment 

 two white spots placed obliquely, the lower spot being the largest, and 

 the under surface is pale greenish ; the larva frequently has a faint pink 

 tinge, and the longitudinal stripes, which are very faint at first, become 

 darker with age. It remains in the mine and feeds for about one day 



