MEMOIKS OF THE XATIO^S’AL ACADEMY OF SCIEI^CES. 
245 
on each side of the head above the ocelli, with scattered spots between. The body is thickest in 
the middle (much like Abbot’s drawin^^), and pale tlesh, marked with numerous irregular reddish 
pink wavy hair lines. The usual dorsal band is reddish, bordered with j’cllow, and inclosing a 
pale, almost whitish, baud. From the prothoracic segment tbe two lines contract, dilating on the 
second thoracic segment and becoming witlest ax)art on the second and third abdominal segments, 
and again widely separated on the seventh abdominal segment. The two lozenge-shaped spots 
thus formed inclose two parallel median i)iijkish lines. On the suranal plate the two lines unite 
to form a median pale sere-brown band. Thoracic and abdominal legs i)ale, marked with red. 
Th(‘ freshly hat<ihed larva difters from that of II. guitivltta in having no traces of tubercles 
or horns on abdominal segments 4 to G, in the first pair having tines of quite different shape, 
being thicker and more spinose, these horns being dull chitinous, of the same hue as the head. 
The other dorsal tubercles are about oneapiarter as long, not elbowed, and stouter in ])roportion, 
while those on the eighth segment are smaller. 
The following description is of a larva stated by Mr. Dyar to be that of H, obltqua: 
Stage TV . — Head higher than wide, the sides rather angular, clypeus indented laterally, 
sutures moderate, width 2.35 mm. In the position of rest the body is contracted so as to a])pear 
eidarged at joints 7 to 10, tapering i>osterioi^y. Anal feet 1.5 mm. long, tail-like. A ])air of short 
prothoracic horn-like tubercles, apparently tipped with red. Color leafgreen with numerous 
small purple-brown dots and fine white streaks. A peculiar white dorsal baud, recalling in shape 
that of II, guttiritta, but without a siibdorsal line. It is dilated on joint 2, narrow on joints 3 
and 4, widens triangularly on joints 4 to 8, being widest on joint G, where it extends to the 
lateral region. It becomes narrow in the incisure between joints 8 and 9, then widens to joint 1 1, 
and narrows again to the anal feet. It has an obscure brown border and incloses little green 
streaks in the anterior enlargement and others in the posterior one which almost predominate 
over the white color. A series of red-brown mottled blotches around the spiracles and subven- 
trally with ill-defined edges. One on joints 4 and 5 runs obliquely forward and downward, 
one on joints G to 8 backward and downward, and others on joints 9 and 10 not oblique. There 
are traces of a white subventral line along- the riilge, seen distinctly only on joints 12 and 13. 
Anal leet white, with a brown line on top and black at the tip. 
^‘-Stage F. — Vertex of head retracted below joint 2, not exceeding it, as in hiundata. Head 
finely dotted and mottled with light red and black on a wliitish ground, forming a diffuse gray 
band from ocelli to vertex, with a crimson tinge around the ocelli; mouth dark crimson, as are 
also the thoracic feet except at the joints; width, 3.5 miu. Body with a sordid wliito ground color 
(in the brown form) or lighter green (in the green lorm), thickly covered with white rounded 
red-brown dots, arranged in irregular longitudinal streaks intermixed with white streaks, the 
lateral patches of the previous stage largely obscured (or as before in the green fornj). Horns 
absent; the cervical shield smooth. Anal feet short, divergent, white. Dorsal band as before, all 
white, less thickly dotted with brown than the sides, deiined by a brown shaded border and 
tinged with yellow where the horns were and at the sides of the central enlargement and with 
crimson on joint 2. (In the green form there is a faint double, rather ii-regular dorsal line, which 
is green on joints 5 to 7, 9 and 10, and forms a green wedge-shaped i^^ttch on joints 11 to 13, edged 
with brown and yellow, tapering posteriorly and ending in a line on joint 13. A pale yellow 
stigmatal line.) The bonier of the baud is broken on joint II, as in the pattern oi guttivitia. 
Three larvie on oaks (Quercus macrocarini) at Plattsburg, IIS', Y., August, IS93, collected 
with the assistance of Prof. G. 11, Hudsoji and Mr. C. F. Hudson.” (Dyar.) 
Geogntphical distrilmtion . — This species is widely diffused throughout the Appalachian and 
Austroriparian subprovinces, rejdacing in the fovmev II, astartc of the Southern and Southwestern 
States. According to Grote (List of 18G8, footnote, p. xii), it is figured by Abbot in his inedited 
manuscriiit drawings, and hence must inhabit the Austroriparian subproviiice. I also have a 
specimen from Georgia from Mr. llulst; Medford, Mass. (Trouvelot); Plattsburg, N. Y. (Hudson); 
NewY'ork to Pennsylvania (Grote); Khode Island (H. L. Clark); Manhattan, Kans., May 14, 
normal form (Popenoe); Winter Park and Enterprise, Fla. (Mrs. Slosson); Missouri, Georgia, 
Florida (TJ. S. Nat, Mus.); Massachusetts (var. troiivelotii) South Carolina (French); Arkansas 
(Palm). 
