MEMOIRS OF THE XATIOXAL ACxVDEMY OP SCIENCES. 
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broad white dorsal stripe, coiitractin,^’ toward the horns, becoming’ narrow behind them, but 
widening to the third abdominal segment, contracting to a yellowish point on the hinder edge of 
the fourth segment, where a second white band begins in a yellowish point, and is widest on the 
sixth segment, becoming forked on the last four abdominal segments. The snranal plate is white 
above; the anal legs white above, lined with red. On the sides of the third thoracic segment is 
a short curved red line. A large, broad oblirpie stripe, lined with red and white, on the side of 
the fourth abdominal segment. The thoracic legs are stained with pale red; the middle 
abdominal legs are pale green, stained with red above the plantie. The sides of the body are- 
finely dotted with dark blood-red. 
Last stage . — Described August 11. Length, 24 mm. Head high, conical, ending on the vertex 
in two rounded tubercles, which are blackish; sides of the head reddish brow’u, the color of a 
dead maple leaf; extending up and down the front is a white median band, including the labrum 
and clypeus, and extending back over to the white dorsal band beginning on the prothoracic 
segment. Body of a delicate pea-green, with the characteristic white dorsal band, and on the 
sides of the third thoracic and first abdominal segments the obli(pie sere-brown patch inclosing 
the first abdoiiiinal spiracle. A second large sere- brown patch on the side of the third abdominal 
segment, extending forward upon the secoml, and back\vard, forming a larger spot on the foui’th 
segment, A third oblique sere-brown patch is situated on the side of the sixth segment, inclosing 
the si)iracle and partly, like those in front, edged irregularly with a darker reddish browm tint. 
The white dorsal band is as before, but more pronounced, being Avider and more continuously 
edged with reddish brown. There are fine concolorous dots scattered over the sides of the body. 
A larva which Dr. Dyar thinks may be a variety of II. biundata was observed on the red oak 
at Brunswick, IMe., August 27. Length, 35-40 mm. The head is not so wide as the body, greenish,, 
with a pink stripe on each side. The body is thickest in the middle, a double dorsal pinkish 
brown stripe inclosing a median white line and extending upon tlie first abdominal segment. 
There are two snbdorsal yellowish stripes Avliich are interrupted on the third abdominal segment, 
which is i>inkish brown on the sides, but not .above, wlnie the succeeding segment is brownish 
above but not on the sides, being bounded laterally by a yellowish line. On the fifth abdominal 
segment is a broad dorsal, V-shaped, brown spot, the apex pointed anteriorly. Segments 7 and S. 
with a dorsal brown x^atch. On the last segment are two narrow brown lines. The sides of the 
anal legs are rusty reddish brown ; an oblique reddish brown band extends from the first abdomiiml 
ni)on the third thoracic segment and incloses the first abdominal spiracle; the third spiracle is 
included in an oblique brown band extending from the brown dorsal spot above. An oblique 
lateral brown band on the sixth abdominal segment, and on the seventh and eighth is a lateral 
oval concolorous spot connecting the two segments. The ground color of the body is pea-green,, 
speckled finely and densely with black. 
The rust-red brown spots are of almost exactly the same hue as the rusty sere spots on an 
oak leaf, and it is thus at first difficult to detect the larva wheu feeding on the edge of a leaf. 
This larva is, I am quite sure, the final stage of JI. hiundaia (PI. XXXII, figs. 2, 2«), as I have 
found it during the ])ast season on the ie<l or rock maple. One found August 28 was without the 
oblique pale broAvn line on the third thoracic and first abdominal segments, and also Avithout 
the broAvn spot on the side of the sixth abdominal segment.^ 
I The following tle.«?rription is driiwii up from a spocimen sent nio hy Dr. Dyar, which inoves to he If. hiundaia ; 
Length, 35 niin. The head is not so wide as the body. AA’idth, \ min. It narrows above more than usual, so 
that at the vertex it is scarcely more than one-fourth as wide as below. The 8i(U?s are angular. 7'ho vertex is 
hilobed, ending in two well-marked conical tnherch^s, which are black at the end, but not piliferous. 
The head is whitish, polished greenish, with a faint X'nrydish tinge. The region In front and on each side of 
the clypens and from there to the vertex is polished greenish, w’ithont the purplish tint. 
The body in general is entirely free from ])iliferoiis warts or hninps. There are four laimito piliferous warts on 
the first thoracic segment, which is normal. The body is spindle shapeTl, tayioriiig toward each end, iiosteriorly to- 
the anal legs, wdiich are sinall, weak, an<l yiolished faint ]»urpUsh. The snranal plate is small, rounded behind,, 
smooth, with tAVO dark dorsal stripes. The body is pale green. -\s the exanqde before me is fnll-fed and about, 
ready to pupate, it is faintly marked with sere ainl brown, x>a]o raw sienna on the si<lc3 of the first abdominal 
segment, Avith a sinall patch, and on the sides of the sixth abdominal segment, Avhile the sides of the third and 
fourth, the Avhole of the third, the spot encroaching a little on the second segment, are Avashed Avith the same pale 
brown or raAV sienna tint. (Dr. Dyar suggests that the white dorsal marks must have been lost on account of the- 
apyiroach of pupation.) 
