﻿82 SEVENTH ANNUAL KEPORT 



state. This is the species treated of in my second Report, and which 

 so injuriously afi'ects our apple orchards. 



The following descriptions of the immature stages will serve to 

 compare with those presently given of what I call the Fall Canker- 

 worm : 



Anisopteryx vkknata, Peek.—Effg — Elliptic-ovoid ; 0.0'J inch lono^ ; not quite 

 half as thick, appearing sometimes faintly shagreened, and with irregular, longitudi- 

 nal depressions ; reflecting prismatic colors ; shell thin and delicate and quite smooth 

 under the microscope. Deposited in various sized masses in sheltered situations. 



Larva — Wlien first hatched of a dark olive-green or brown hue, with a shiny- 

 black head and thoracic legs, with a whitish lateral and dorsal band, the latter having 

 a darker central line along it. [These pale stripes are broad, and the dorsal one almost 

 white on the anterior part of each joint, so that the dorsum often appears spotted.] 

 After the first moult, the head becomes lighter and mottled, and the light bands less 

 conspicuous. After the second moult, the bands are almost obliterated and the body 

 becomes more uniformly mottled and speckled with livid-brown ; the head becomes 

 still lighter and the prolegs being now large, spread out at almost a level with the 

 venter. After the third (and I believe last) moult, the appearance changes but little. 

 The full-grown larva averages 0.90 inch in length, with an average diameter of 0.10 

 inch, being broadest on joint 11. It vaiies from light fleshy-gray to almost black. 

 Head mottled ;is in figure 16. Ends of body somewhat darker than middle. Joint 1 

 with a yellowish dorsal shield, the hinder margin in form of a rounded W. Viewed 

 under a lens, the body has a series of eight fine light yellowish, irregular, somewhat 

 broken lines running the whole length of the bodj', each one relieved by a darker shade 

 each side of it. Tlie two along middle of dorsum are close together, with the space 

 between them usually dark, and occupied at anterior edge and middle of joints 5, 6, 7 

 and 11 by black marks somewhat in form of x, or of a trefoil ; these maiks being repre- 

 sented by simple bhick dots on the other joints. Space between these dorsal lines and the 

 next lowest, lighter, and containing four black piliferous spots to each joint, the posterior 

 ones rather further apart than the anterior ones which on joint 11 form two larger ele- 

 vated shiny black spots, [often with white spots in front of them.] Space between lines 

 2 and 3 darker than any other part of the body. That between lines 3 and 4 lighter than 

 any other part of body, and containing the stigmata which are perfectly round and 

 black with a light center, with a small piliferous spot anteriorly above and below them, 

 and another behind them, this last becoming large on joints 5, 6, 7 and 8. Venter dark 

 and livid at borders, with a pale greenish band along the middle, which has a pinkish 

 patch in it on joints 5, 6, 7 and 8. Legs greenish at base ; color of body at extremity. 

 The markings are most distinct on the light specimeuj. — [Second Report. 



Chrysalis — Pale grayish-brown, with a dark green tinge on the wing-sheaths. 

 Remarkable for its robustness and for the large size and prominence of the palpi. A 

 single bifurcate thorn at extremity. Length 0.35 inch ; diameter across thorax 0.12 

 inch. (From the fact that in this description of the chrysalis, made six years ago, no 

 reference is made in my notes to any sexual distinction, and that over a dozen chrysalis- 

 shells examined all show the wing-sheaths, I infer that the female chrysalis has wing- 

 sheaths, as in pometaria, and that it otherwise, in this state, resembles this last.) 



