S3 
es are barely discernable in the better marked individuals; a row 
distinct black dots along the posterior border; the ordinary spots 
presented by blurred marks or entirely obsolete; the undulate line 
'oss posterior fourth of wing distinct, and relieved inside by a pale 
ncident shade, with the teeth quite aciculate and with the psi-spot 
characteristic of the genus, but rarely traceable; fringe narrow 
1 generally entire. Hind wings pure white, with a faint row of 
rk spots around posterior border. Under side of both wings 
ite, with faint lulvous tint and faint irrorations; each wing show- 
the brown discal spot and the row of points at posterior border, 
ad and thorax speckled gray; abdomen whitish-gray; antennae 
>rt, simple in both sexes, gray above and brown below; palpi 
all. Two specimens with the front wings very dark, showing the 
[inary lines and spots conspicuously, and with the antennae brown 
)ve as well as below. Average length, 0.75; expanse, 1.75 inches.” 
^ arva .—[Plate VI, Fig. 3, a]. “Prevailing color, black. Each 
it with a transverse, dorsal, crimson-red band across the middle 
m stigmata to stigmata, and containing six warts, each furnish- 
ten or twelve or more stiff yellow or fulvous bristles, and the 
> dorsal ones being farthest apart. A sub-dorsal, longitudinal, 
low line, interrupted by this transverse band and at incisures in 
h a manner that the black dorsum appears somewhat diamond- 
ped on each joint. A broad, wavy, bright-yellow stigmatal line, 
taining a yellow bristle-bearing wart in middle of each joint. 
;eral space occupied with different sized, pale yellow spots, largest 
ards dorsum. Head chestnut-brown. Venter crimson-black, with 
ffle-bearing warts of same color. Stigmata oblong-oval and pale, 
pracic legs black; prolegs with black extremities. Such is the 
mal appearance of this larva, but it is very variable. In some 
yellow seems to predominate over the black, and there is a 
re or less distinct dorsal line. In some this dorsal line forms a 
:e speck at the incisures of the middle joints. The transverse 
nson band is often entirely obsolete, and the warts distinctly 
arated, while in others where this band is distinct, the warts 
[uently coalesce.” 
'upa. —Almost black, and shagreened with the exception of a 
)oth and polished rim, at posterior border of joints, which become 
fish, especially ventrally, on the three joints immediately below 
g-sheaths. Terminal joint horizontally compressed, squarely cut 
and furnished with a little brush of short, evenly-shorn, stiff, 
ms bristles. 
LIFE HISTORY AND INJURIES. 
his insect _ hibernates in the cocoon (Plate VI, Fig. 3, b), and 
ns to be either single- or double-brooded, according to latitude. 
Missouri there are two broods in a year, by Prof. Riley’s account, 
moths of the first brood escaping from the cocoons in May (the 
se resulting appearing chiefly in June); and the second brood of 
hs occurring in July and the larvae late in the fall. In the 
th-east, the moths escape from the hibernating cocoons in June, 
■eported by observers in Canada* and Massachusetts,! and the 
pi '•** * ________ 
Report of the Entomological Society of Ontario, 1872, p. 28. 
Ihe Canadian Entomologist, Vol. X (1878), p. t»(). Psyche, Vol. II, p. 34 (May and June, 
l 
* 
