190 
Journal New York Entomological Society. 
[Vol. VI. 
Laterally a green stripe passing from vertex to mouth. Prothoracic horns brown, 
covered with greenish tubercles supporting a black spine. A greenish-yellow dorsal 
stripe, becoming triangular on joints 2 and 3 ; it becomes narrow and again widens 
on joints 6, 7,8 and 9 into a diamond shaped patch, constricted on joint 11, and finally 
widening on joints 12 and 13. A triangular brown patch in the middle of joint 3. A 
brown spot on joint 6. Joints 7 and 8 ornamented by an oval brownish spot centered 
green, and surrounded by a circle of minute, greenish tubercles. From the middle of 
joints 9 to II, a brownish patch like a maple leaf. Across the penultimate joint a 
longitudinal brownish dash. Lateral parts of larva green, of the same color as leaf 
of cottonwood. All legs concolorous with lateral parts. Feet whitish. The green 
of abdominal parts a lighter tint, and last two joints almost white. Stemapods of a 
color approaching a purple or lilac brown, annulated with greenish-yellow. The ex¬ 
tensile part of ou f er third of “ tails ” of darker shade. Spinose from insertion to tip. 
Stage III. —Noted October nth, larva 15 days old. Length of larva at rest 24 
mm., of body from head to venter, 18 mm. and of stemapods, 8 mm. The width of 
joint 2, 3.5 mm. of joints 6 and 7, 3 mm. Head subquadrate, 3 mm. in length and 
2.5 in breadth. Head brown, face almost oval, brown and of lighter tint at mouth 
parts. Ground color of face a much lighter brown covered with dark spots. Lateral 
parts of face tinted brown. Vertex light brown, the same color passing over dorsum 
joints I and 2. A chocolate brown triangular patch on joint 5, widening on segments 
6 and 7> a nd narrowing on joint 8, forming the first, anterior diamond-shaped orna¬ 
mentation. The same brown dorsal patch is repeated on joints 11 and 12, not quite 
so large. On joint 13 there is more of an elliptical brown dorsal patch, reaching to 
venter. A jellow border a little broader than the width of stemapod, passes like an 
iiregular subdorsal line below the brown ornamentation. This line starts at the head 
and continues uninterruptedly to venter. On joints 3 and 4, this yellow line almost 
meets with only a trace of brown between. Lateral parts of larva green, exact coun¬ 
terpart of co. ton wood leaf, covered by yellowish-white and lilac purple papillae, some 
surmounted by hairs. A few dark brown papillae on dorsal patches. Thoracic and 
abdominal legs green like lateral parts. Feet of a lighter tint. Stemapods lilac 
brown near venter, of ligtter tint at the “ flagellum,” and twice annulated yellow, 
and spinose covered with setae. Venter and abdominal parts of last three segments 
whitish. All other abdominal parts of larva conclorous with lateral surface. The 
spiracles light brown, edged by a tint of green and white centered. Feet quite pilose, 
hairs fewer in number toward spiracular line. 
Stage IF .—Not observed until nearly mature. October 22d, mature larva 26 
dajs old. Length at rest from head to venter, 3° mm., while in motion 37 mm , of 
stemapods 9 mm. when undisturbed, and during flagellation io mm. This gives en¬ 
tire length of 39 mm. at rest. 
Length of head 3 mm. and over, width 3 mm. Width of segment 2, 5 mm., of 
joint 7 , 6 mm., of joint 10, 5 mm. Dorsal abdominal diameter of segment 7, 7 mm. 
Head subquadrate or nearly so, a triangular patch on vertex. Color of head lilac 
brown with a brown spot each side of vertex. Face of lighter tint, lateral parts yel¬ 
lowish. Antennae also yellowish. Mouth parts blackish. Dorsal ornamentation of 
a triangular patch, whitish within and lilac edged, on segments 2 and 3. The median 
dorsal surface is almost milk white, much as in C. multisetipta, thus widely separating 
