MEMOIES OF THE NATIONAL ACADEMY OF SCIENCES. 249" 



Heteiocampa iimbrata Wulker. 



(PI. V, figs. 10, 13 <?,U 9.) 



Heterocampa iimhrala Walk., Cat. Lcp. Het. Br. Mils., v, p. 1023, 1855. 



Heterocanqui pnlrerea Grotc and Roll., Trans. Amer. Ent. .Soc, i, p. 185, Aug, 1867, PI. IV, fig. 32 9 . 

 Grote. New Check List N. Amer. Moths, p. 19, 1882. 

 Smith, List. Lep. Bor. Amer., p. 31, 1891. 

 Kirby, Syn. Cat. Lep. Het., i, pp. 563, 564, 1892. 

 Hettrocampa athcrco Doiibleday, Harris Corr., ]). 134, 1869. 



Heterocampa umbrata Neiun. ami Dyar, Trans. Aniei-. Ent. Soc, xxi, p. 205, 1894 ; .Tourn. X. Y. Ent. Soc, ii, p. 117, 

 .Sep., 1894. 



Larva. 



(PI. XXXIII, fig. 8, 8a.) 



French, Can. Ent., sii. p. 83, April, 1880 (last larval stage described) ; Sixth Ann. Rep. S. 111. Normal Univ., p.. 



44, 1880. 

 Packard, Fifth Rep. U. S. Ent. Coinm. on Forest Insects, p. 159, 1890 (copied from French).' (The larva 



referred to in Proc. Bost. Soc. Nat. Hist., xxiv, p. 548, is not that sjjecies.) 



Moth. — One f , two 9 . Head, thorax, and fore wings pale ash, with a slight ])ale olive-green 

 tint. Palpi slender, short, black. Prothorax or "collar" with two slightly marked parallel lines 

 crossing it. Tegnhf with white scales in the middle, while the edges and ends are bordered with 

 white and black scales. Thorax behind with a blackisli patch, succeeded on the abdomen by 

 seven dusky short basal tufts, brownish in S , of which the first one is very large, the others small, 

 the fourth one larger than the others, except the basal one. 



Fore wings pale ash-gray, with a pale olive-green tint, a basal double black scalloped line at 

 the iu.sertiou of the wing, not reaching the internal edge, which is white. Ou the basal fourth of 

 the wing is a black scalloped line, followed by a broad, clear olive ash space. Discal mark a curved, 

 narrow (distinct in 5 , in 9 not very distinct) line continued behind, i. e., on the cubital vein by a 

 distinct, broad, black shade containing three parallel narrow black lines (wanting in the i I have 

 seen); this shade is much as in H. obliqita and curves outward, tilling the second cubital space, 

 the outer end becoming a part of the submargiual line. A large semielliptical or pear-shaped, clear, 

 almost whitish, ash area beyond the discal mark, and traversed by a faint double scalloped dark 

 line, the extradiscal, which entirely crosses the wing. The characteristic mark in 9 is the black, 

 distinct, scalloped, broken, submargiual band, which is nearly obsolete on the costa and on the 

 internal edge, but broad and heavy between, and dislocated ou the first cubital vein, the scallops 

 being heavy, wide, and black. (In the $ I have seen these scallops are di.sconnected and lighter in 

 hue, as well as narrower). 



The edge of the wing is clear greenish ash. The fringe is of the same color, with black 

 veuular streaks. Costa with three linear black subapical marks. 



Hind wings alike in both sexes, with a distinct sinuous diffuse whitish band on the outer 

 third, this being the only species in the genus iu which this line is present, and iu this respect 

 strongly recalls H. marthesia. Beyond this line the wing is smoky, the fringe white, dusky at the 

 base, where is a black scalloped line. A dark spot at the internal angle. 



Underside of the wings whitish, the dusky submargiual shade reproduced beneath in each 

 wing. Fringe as above. 



Expanse of the wings, S 45 mm., 9 4.5 mm.; length of body, S 20 mm., 9 19 mm. 



H. pulverea is readily recognized by the lack of the subapical oblicpie white .*hade, so distinct 

 iu H. obliqna, by the heavy black scalloped line which is broken on the first median vein, by the 

 pale greenish tint of the thorax and fore wings, and by the unusual whitish sinuous line ou 

 the hind wings. 



My specimen, which agrees with Grote and Robinson's description and figures, akso agrees 

 with a type specimen iu the American Museum iu New York, and such a specimen labeled in 

 Mr. Grote's handwriting iu the collection of Mrs. Bridgham in New York. 



'The description of the moth docs not apply to piilrerea, but was drawn up from IT. guttivitia bj' error. Tho 

 references on jip. 328. 492. .■iiid 649 are erroneous. Jlr. Dyar writi's that he believes Walker's //. uinbrala and H. 

 itmiplatja are two earlier names for this sjiecies. 



