BUTTERFLIES OF MAINE. 69 
white, but changing in a few hours to pale green. The 
head is light brown, nearly twice as broad as the second 
segment, and has on each vertex a small rounded prom- 
inence indented at the top, and from the middle of the hol- 
low rises a little tubercle with a bristle. The last segment 
of the body ends in two tails. In eight days the larva molts, 
after which it is .26 of an inch long, slender, slightly thickest 
in the middle segments; the tails longer in proportion than 
at first, slender, somewhat conical, pink-tipped ; rough, with 
white, pointed tubercles, and short bristles. Color, at first 
greenish yellow, afterwards changing to pale green. Along 
the middle of the back is a dark green stripe free from tuber- 
cles, and on either edge of this, is a line of white tubercles, 
another along the side, and a third along the base; between 
the last two, are two other white lines. The head is yellow- 
ish green, with the surface finely tuberculated. On each ver- 
tex is a long, tapering, rough horn, tipped with brown, and 
marked in front by a reddish stripe, which is extended down 
the side of the face. In about nine days it molts a second 
time, is .4 of an inch long, of the same form as before, and 
yellowish green, with the same tuberculated lines. The horns 
on the head are longer than before, nearer together, and the 
upper part pink. In about fifteen days it molts for the third 
time, after which it is .55 of an inch long, of the same form 
and color as before, but changes very soon to brown and 
buff. Along the middle of the back is a brown stripe, on 
either side of which is a reddish buff band, which changes 
to greenish on the outer side. Another buff band on the side, 
through the middle of which runs a brown line. The basal 
ridge is buff. In a few days the larvee become lethargic, in 
which state they pass the winter. Soon after their revival in 
the spring, they molt for the fourth time, being .62 of an inch 
long, pale green, with a dark stripe along the back, and a 
yellowish white one just below; the two lines on the side 
and the basal stripe of the same color. Tails, green; head, 
emerald green, the horns reddish, the stripe down the face, 
