MEMOIES OF THE NATIOXAL ACADEMY OF SCIE]S"CES. 
16(i 
‘^Stmje III , — Head narrowing toward vertex, with an angle between the front and sides; 
clypeiis rather large; sutures evident, the median depressed at vertex. Body cylindrieal, abdominal 
segment 8 enlarged dorsally, sloping off rapidly to segment i», which is small; anal feet used, 
about the same size as the other abdominal ones. On abdominal segment 2 a dorsal lleshy hump, 
low, eoiiical, nutant; a very slight one also on abdominal segment 3. Color lilac-white, diffusely 
marked along the sides with a darker shade. A brown-black dorsal band narrowing out and 
disappearing on abdominal segments d-h, but distinct again posteriorly. Thoracic feet dark, a 
faint white stigmatal line. 
“aS’^o/c I V , — Head higher than prothorax, concolorous with body, with a purplish band from 
the palpi narrowing to the vertex of each lobe. Some nearly concolorous mottlings, especially 
laterally posteriorly. Body lilac-white; the darker lateral streaks become oblique subdorsals, but 
are faint, as is the white stigmatal line. Dorsal band continuous, but very narrow on abdominal 
segments 4-d, velvety brown-black on the nutant hump on abdominal segment 2, reddish on the 
hump on 8. Venter heavily shaded with purple-brown. Legs all dark; - a white line on the one 
on abdominal segment 0. Tubercles small, concolorous with very tine short setjc. Seta i is borne 
on the hump on the eighth abdominal segment, but only on the bases of the horns on abdominal 
segments 2 and 3. Altogether similar to the last (fifth) stage.” (Dyar.) 
Dr. Dyar has reared the larva, and finds that there are five stages. The widths of the head are 
( in the larva examined) h..l, 1,1, 1.0, 2.35, 3.5 mm. 
harm before last molt , — Head large, oval, ilatteued in front, narrowing toward the vertex, 
which is slightly bilobed; the head is wider than the thoracic segments; the body is thickest on 
the second and third abdominal segments, on each of which is a thick, llesh 5 % conical, soft tubercle, 
the apex falling over backward; they may be elevated and somewhat enlarged or depressed, the 
anterior tubercle the larger of the two; the body is much 
humped dorsally on the eighth segment; supraanal i^late 
smooth, much rounded; the anal legs slender, not nearly so 
thick as the other abdominal legs. General color i^early, 
glaucous, whitish gray, somewhat marbled with brown; head 
of the same color, marbled with lirown; a broad, faint, lateral 
band shaded behind with white. A brown dorsal line extends 
from behind the head to apex of second tubercle on third 
abdominal segment; thence a faint vascular line extends to 
end of snpraaual i)]ate. The hump on eighth segment pale 
rust, yellowish rod on sides, deeper above in the middle. A 
pale pinkish stigmatal line. Length, 20 mm. 
Mature larva. — Length, 40 mm. Does not differ except in size from previous stage. The head 
is rather square on the sides, narrowing above, and scarcely bilobed above; it is of the same 
general shape as in Schizura and Janassa. Tu this species, instead of a single hump on the first 
abdominal segment, there is a large, high, soft, movable hump on the second, and Avliich nods 
backward, besides one a little stouter and shorter on the third. The humps are simx^le, with no 
traces of a fork or of bristles, and they are both brownish, of the hue of a dead dry leaf. The 
very prominent hump ou the eighth abdominal segment bears two slight low tubercles, but no 
bristles. The anal legs are long and slender, but the planta is well provided with crochets. 
Underside of body dusky; the pale lilac lateral line sends a branch down the middle of the feet 
on the sixth abdominal segment. 
I add Mr. Edwards’s description of the full-fed caterpillar: 
Head slate color, mottled with black, and with a pale strqje ou each side. Mouth i)art8 with a greenish tinge. 
Body pale lilac, with the exception of the eleventh and twelfth segments, whicli are dull golden. The seventh and 
eighth segments have raised prominences, which are also golden, that of the seventh being the largest. Laterally 
there are some pale oblicpie streaks somewhat similar to those of many Sphiugichu; these do not meet on the hack, 
where there is a faint slate-colored line. Between the second and sixth segments, and common to all of these, is a 
darker dorsal shade which reappears on the eleventh and twelfth segments. The spiracles are while, with a black 
ring, and the lower lateral line is paler than the rest of the body. The twelfth segment bears a bump, and the sides 
of the eleventh, twelfth, and thirteenth segments are jiale brown, mottled with orange. Abdominal legs dull slate 
color, motfcled with- black; thoracic legs black. Length, 55 mm. 
Fig. C6 — End of pupa of Xotodonta stragula. 
al, anal legs; cr, the vestigial cremaster. 
