MEMOIES OF THE XxiTIOi^AL ACADEMY OF SCIENCES. ' 245 



oil each side ol" the head above the ocelli, with scattered spots between. The body is thickest in 

 the middle (much like Abbot's drawiug), and pale Hesli, marked with immeious irregular reddish 

 2)ink wavy hair lines. The usual dorsal band is reddisli, bordered with yellow, and inclosing a 

 jjale, almost whitish, baud. From the prothoracic segment the two lines contract, dilating ou the 

 second thoracic segment and becoming widest apart on the second and third abdominal segments, 

 and again widely separated on the seventli abdominal segment. The two lozenge-shaped spots 

 thus formed inclose two parallel median pinkish lines. On the suranal plate tlie two lines unite 

 to form a median pale sere brown band. Tlioracic and abdominal legs i)ale, marked with red. 



The freshly hatched larva differs from that of iT. gnftiritta in having no traces of tubercles 

 or horns on abdominal segments 4 to 0, in the first pair having tines of quite different shape, 

 being thicker and more siiinose, these horns being dull chitiuous, of the same hue as tlie lu-ad. 

 The other dorsal tubercles are about oneciuarter as long, not elbowed, and stouter in ])roportion, 

 Avhile those on the eighth segment are smaller. 



The following description is of a larva stated by Mr. Dyar to be that of U. ohliqua: 



'•'■ StiKjc IV. — Head higher than wide, the sides ratlier angular, elypeus indented laterally, 

 sutures moderate, width 2.3j mm. In the position of rest the body is contracted so as to a])pear 

 enlarged at joints 7 to 10, tapering posteriorly. Anal feet 1.5 mm. long, tail-like. A pair of short 

 prothoracic horn-like tubercles, api)arently tipped with red. Color leaf-green with numerous 

 small purple-brown dots and line white streaks. A peculiar white dorsal band, recalling in shape 

 that of H. guttiritta, but without a subdorsal line. It is dilated on joint 2, narrow ou 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 11, 

 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 s^iiracles and subven- 

 trally with ill-deflned edges. One on joints 4 and 5 runs obliquely forward and downward, 

 one on joints to 8 backward and downward, and others on joints 9 and 10 not ol)li(pie. There 

 are traces of a white subventral line along the ridge, seen distinctly only on joints V2 and 13. 

 Anal feet white, with a brown line on top and black at the tip. 



''Stage V. — Vertex of head retracted below joint 2, not exceeding it, as in hiiimhita. Head 

 tinely dotted and mottled witli light red and black on a whitish 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 mm. Body with a sordid white ground color 

 (in the brown form) or lighter green (in the green torm), 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 form). 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, defined 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 irregular dorsal line, which 

 is green on joints 5 to 7, 9 and 10, and forms a green wedge-shaped patch on joints 11 to 13, edged 

 with brown and yellow, tapering posteriorly and ending iu a line ou joint 13. A pale yellow 

 stigmatal line.) The border of the band is broken on joint 11, as in the pattern of guttivitta. 



"Three larva- on oaks {Qttcrcus mcwfocHrpa) at Plattsburg, N. Y., August, 1893, collected 

 with the assistance of Prof. G. H. Hudson and Mr. C. F. Hudson." (Dyar.) 



GeognqiMcal distribution. — This species is widely diffused throughout the Appalachian and 

 Anstroriparian subprovinces, replacing in the formev H. astarte of the Southern and Southwestern 

 States. According to Grote (List of 1808, footnote, p. xii), it is figured by Abbot in liis inedited 

 manuscript drawings, and hence must inhabit the Anstroriparian subprovince. I also have a 

 specimen from Georgia from Mr. Hulst; Medford, Mass. (Trouvelot); Plattsburg, X. 1'. (Hudson); 

 New York to Pennsylvania (Grote); Ehode Island (II. L. Clark); Manhattan, Kaus., May 14, 

 normal form (Popenoe); ^Vinter Park and Enterprise, Fla. (IMrs. Slosson): Missouri, Georgia, 

 Florida (U. S. Nat. Mus.); Massachusetts (var. trouvelotii); South Carolina (French); Arkansas 

 (Palm). 



