14 
dropping. In the fourth stage, the aspect is quite changed, the gen¬ 
eral color being dull dark green. The head has the mottlings of a 
deeper brown, and the characteristic brown lines appear. The sec¬ 
ond pale line (from the above) is obsolete, and the other five are 
narrowed, pure white and sharply relieved by dark shades. The 
prolegs are of nearly equal size, the cervical shield better defined; 
in short, except in the lighter sub-stigmatal stripe, and more green¬ 
ish color, the characters of the more normal mature larva obtain. 
In the fifth and sixth stages, the changes are mainly in the increas¬ 
ing prevalence of the brown and ferruginous colors, and the greater 
relief and intensity of the black, especially above the white lateral 
line. The front pro-legs, in the last stage, are, if anything, longer 
than the hind ones. I reproduce herewith, with a few additions* 
my original description of the 
Mature larva .—General color, dingy black ; appearing finely mottled 
and speckled under a lens, with the piliferous spots placed in the 
normal position, but scarcely visible, though the soft hairs arising 
from them are easily seen with a lens. Four lateral light lines, 
of almost equal thickness, and at about equal distance from each 
other, the two uppermost white, the two lowermost yellow; a much 
less distinct medio-dorsal white line, frequently obsolete in middle 
of joints, and always most distinct at the divisions; a jet black 
line immediately above the upper lateral white one, the dorsum 
near it, thickly mottled with dull yellow, but becoming darker as it 
approaches the fine dorsal white line, along each side of which it 
is perfectly black. Space between lateral lines 1 and 2, from above, 
dull yellow, or reddish, the white lines being relieved by a darker 
edge; that between lines 2 and 3 almost black, being but slightly 
mottled along the middle; that between 3 and 4 yellow, mottled 
with pink brown, and appearing lighter than that between 1 and 2. 
Venter greenish; glaucus mottled and speckled wuth neutral color, 
especially near the edge of 4th lateral line. Legs glassy, and of 
same color as venter; those on thoracic joints with black claws, 
those on the abdomen with a large, shiny black spot on the outside. 
Stigmata oval, black, and placed in the third lateral light line. 
Head highly polished, pale grayish yellow, speckled with confluent 
fuscous dots; marked longitudinally by two dark lines that com¬ 
mence at the corners of the mouth, approach each other towards 
the centre, and again recede behind; on each side are four minute 
polished black eyelets, placed on a light, crescent-shaped ridge, and 
from each side of this ridge a dark mark extends more or less 
among the confluent spots above. Cervical shield polished and 
mottled like the head, with the white medio-dorsal and upper 
lateral lines running conspicuously through it. Anal plate obso¬ 
lete.”—(Riley.) 
“The larva, or worm, when full grown, is 38 mm. (14 inch) in 
length. During this stage—which lasts from fifteen to thirty days— 
the worm casts its skin five times. Its body color is pale green, 
clearly seen only on the ventral surface, varied elsewhere with 
longitudinal stripes of yellow, gray and black, the gray often so 
closely dotted with black as to become dusky. The general arrange¬ 
ment of the stripes is as follows: The entire back is occupied by 
