230 MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



Geographical tlisfribution. — Ranges through the Api):xliichiaii and Austroriparian snbprovinces 

 and tlie eastorn jtortion of the Canii)estnan (Nelnaska), not having occurred west of the eastern 

 borders of the great jilaiiis. Two s|)eciuiens only liave been rieorded from any of the New 

 Enghrnd States, wliere others will probably be discovered, though rarely. It seems to abound 

 most from Pennsylvania southward to Georgia. Orono, Me. (Mrs. Fernald); Lawrence, Mass. 

 (Mr. Treat, Mus. Comp. Zool.); Detroit, Midi. (Mus. Comp. P^ool.); Trenton Falls, N. Y. 

 {Doubleday); Plattsburg, N. Y. (G. E. Hudson); Pern, near Lancaster, Pa. (Coll. Amer. Ent. 

 Soc. Phil.); Washington, D. C, Virginia, Georgia (Riley); Tallahassee, Fla. (Koebelo); St. Louis, 

 Mo., Nebraska, Arkansas (U. S. Nat. Museum); Canada, Maine, Massacliiisetts, Pennsylvania, 

 Ohio, Wisconsin, Champaign, 111., Texas (French). 



Heterocampa guttivitta (Walker). 



(PI. V, tig. 2 c?, 3 9.) 



Cecrittt fjutlirUta Walk., Cat. Lep. Het. Brit. Mus., v, p. 992, 1855. 

 Dii/monia mucorea Herr.-Schaeli'er, Samml. aussercur. Sclniiett., fig. 514, 1856. 

 Lochmaus clnercus Pack., Proc. Ent. Soc. Phil., iii, p. 372, 1864. 

 Misoijuda sohr'm Walk., Cat. Lep. Br. Mus., xxxii, p. 450, 1865. 

 Helerucampa doitbledai/i Scudder, in Harris Eut. Corresp., ji. 134, 1867. 

 Belerocaiiipa guttivitta (Jrote, New Check List N. Amer. Moths, p. 19, 1882. 

 JJeterocnmpu jnilverea Pacli., Fifth Rep. U. S. Eut. Comm., p. 159, 1890. 

 LM-hmivus olivatus Pack., Fifth Rep. U. S. Ent. Comui., )). 39, 1890. 

 Heterocampa ynttivilta .Smith, List. I^ep. Bor. Anier., p. 31, 1891. 

 Kirby, Syn. Crit. Lep. Het., i, p. 564, 1892. 

 Ceerita r/utlii-ilta Xeuni. and Dyar, Trans. Amer. Ent. Soc., xxi, p. 207, 1894 ; Journ. N. Y. Ent. Soc, ii, p. 1 17, 

 Sept., 1894. 



Larva. 

 (PI. XXXI, figs. 1, 1», In-lrf, Id. Id, 2, 2a, 3, 3<(, 4. 4a, 5, 5((. G. Go,, 7, 7a; XXXIII, li.us. 1, In. Ic, 2, 2a, 3, ,3a.) 



French, Can. Ent., xii, ji. 83, 1880. 



Sixth Ann. Rep. S. 111. Normal Univ., p. 661, 1881). 

 Packard, Bull. 7. U. S. Ent. Comm. Ins. Inj. Forest Trees, ji. 46, 1881. (Quotes French's descri|itiou.) 



Fifth Rep. U. S. Ent. Comm. on Forest Insects, p. 159, 1890. {H. puherea by error.) 



Fifth Rep. U. S. Ent. Comm. on Forest Insects, p. 397, 1890. 



Proc. Bost. Soc. Nat. Hist., xxiv, p. .548, 1890. {IT. puh-crea by error.) 

 Dyar. Psyche, vi, p. 178. 1891. (Fourth and last larval stages; cocoon and pnpa.) 



Moth. — Four $ , four 9 . Ground color pale olive-greenish ashen, with wliite scales and 

 patches. Head above greenish ash, in front ash, and the palpi ash-colored, and generally with no 

 black scales on the outside, though in some e.\:imples tliere is a streak of black, but less than in 

 II. biundata. Thora-v varying from pale to dark ash, with dark olive-green scales; a dark line 

 across the hinder edge of the collar; over the niesoscntum dusky brownish, and on base of 

 abdomen a brown ])atch; the teguhe edged with pale ashen scales. 



Fore wings with the basal line indistinct, the scallop not so distinct and pointed as iu 

 H. biundata; middle line doubly scalloped; the spaces between the diiik scallop filled with whitish 

 scales. Discal mark a distinct curxed dtirk line inclosed in a large cons])icnous luiuite or oval 

 ptile patch; in some iudi\iduals on the inner side of this patch and extending below it is a dark 

 brown paU^li. 



The outer line is sinuous, the scallops shallow; the line curves outward deeply op])osite the 

 origin of the cubital venules and loses itself toward the costa in a dilfuse greenish costal patch. 

 There is a distinct submarginal .series of about eight subtriangular dusky spots, the largest one 

 situated on the first cubital )ntersi)ace; this line is scarcely dislocated as compared with II. 

 hiund(tt(i. Hind wings ash, whitish in s])ots; traces of an outer dusky band, distinct in the 

 center, where it is externally shaded with whitish; a diffuse sordid whitish band cro.sses the 

 wing, but is quite faint and best marked on the costa and at the internal angle. P>eiieiith, the 

 lines and spots do not reai)pear, and both wings are uniforndy ash-brown, tlie line at base of 

 fringe dusky, the fringe whitish ash, spotted with du.sky. 



Expanse of wings, S 44 mm., 9 '6b-')'l mm.; length of body, $ 20 mm., 9 20 mm. 



