142 
MEMOIKS OF THE ISTATIOXAL ACADEMY OF SCIE^TOES. 
Legs liairy, the hind tibiie witli long scales spreading outward; two pairs of spurs, the apical 
ones much larger than the first pair. Abdomen in S rather broad, with rather prominent lateral 
tufts, adding to tlie bx'eadth of the hind body. 
The genus differs from its allies in the well-i)ectinated aiitennie, the large palpi, the high 
sharp thoracic tuft, and the scalloped fore wings, the species being yellow ocherous, with two twin 
silvery white discal dots. 
Egg. — Hemispherical. 
Larva . — Body cyliiidrical; piliferous warts minute; no tubercles or humps present; the 
ornamentation consisting only of two yellowisli subdorsal bands, with no sjxots. Freshly hatched 
larva in sliape like the mature larva, only the head is larger in proportion and the body is 
provided with bulbous glandular hairs. 
The larva does not spin a cocoon, probably entering the earth to pupate. 
Ihqm. — Stout, thick; cremaster ending in a conical stout spine, with four upcurved spinules. 
Geographical distribution . — The single species known ranges from Maine and Canada to Oregon 
and southward on tlie Pacific Coast to California, and on the Atlantic Coast to the Gulf States, 
including Florida and Texas. The genus thus ixrevails over the Appalachian, Austroripariau, 
and Campestriau subprovinces, spreading througliout the whole of America north of Mexico 
and south of the Hudsoniau faunal limits. 
Nadata gibbosa Abbot aiul Smith. 
{V\. XVII, iig. 3.) 
LhaUesa glhhosa Abbot and Smith, Lep. lus. Gcoi’gia, p. 163, Tab. LXXXII, 1797. 
Cos)notricha»(/ihhosa Hiibii., Sauiml. Exot. Schmott., iii, Taf. XIX, tig. 1.-4, Penn., 1816. 
2sadaia gihhosa Walk., Cat. Lep. Het. Br. Mils., v, p. 1062, 1855. 
Pack., Proc. Eiit. Soc. Phil., iii, p. 356, 1864. 
Alaator gihhosa Boisd., Lep. Cal., p. 87, 1869. 
Grole, Check List X. Amer. Moths, p. 18, 1882. 
Nadata gibbosa Smith, List Lep. Bor. Amer., p. 30, 1891. 
Xeum. and Pyar, Trans. Amer. Eut. Soc., xxi, p. 186, June, 1894 ; Jouni. N. Y. Ent. Soc., ii, p.. 
113. Sept. 1894. 
Nadata doubledagi Pack., Proc. Ent. Soc. Phil., iii, p. 365, 1864. 
Grote, Check List X. Amer. Moths, p. 18, 1882. 
Smith, List Lep. Bor. Amer., ]>. 30, 1891. 
Kirby, Syu. Cat. Lep. Het., i, p. 611, 1892. 
Nadata doubledayi, var. oregonenaiSj Bntler, Ann. and Mag. Xat. Hist., Oct. 1881, p. 317. 
Smith, List Lep. Bor. Amer., p. 30, 1891. 
Nadata hclirensii H. Edwards, Ent. Amer., i, p. 49, June, 1885. 
Nadata gibbosa, var. riibripennis Xeum. and Dyar, Journ. X. Y. Ent. Soc., i, p. 24, March, 1893; Trans. Amer. 
Ent. Soc., xxi, p. 186, *1894; Jour. X. Y. Ent. Soc.,ii, p. 113, Sept. 1894. 
Larva. 
(PI. XVII, figs. 1, la, lb, 2,2a.) 
Abbot and Smith, Lep. Ins. Georgia, PI. LXXXII, 1797 (colored fig.). Full-fed larva. 
Harris, Ent. Corresp., p, 308, 1869. . 
Boisdaralj Lep. Cal., p. 87, 1869. 
Lininer, Eut. Coiitr., iii, p. 150, 1874, lig. 8 (uncolored fig.). Full-fed larva. 
Packard, Auiericuu Naturalist, vili, p. 691, 1874. (Quotes Liutuer.) 
Pileij, 5th Kep. IT. S. Ent. Comm, on Forest and Shade Tree Insects, pp. 153, 424, 1890, PI. XI; ibid. (fig. 6,, 
colored fig. from drawing by Liutuer). 
Soule, Psycho, vi, p. 197, Dec., 1891. (Description of egg, five larval stages, and pupa.) 
Packard, Journ. N. York Ent. Soc., i, pji. 57, 58, .June, 1893. (Five stages described.) 
2loth . — Of a uuiforiu light buff, with a rusty tinge; fore wings a little deeper in tone, with an 
extradiscal slightly curved ferruginous line, parallel with the margin. Two small silvery discal 
dots, vaiying 111 size; the discal space within these dots clearer than the rest of the wing. An 
inner straight rusty hue, which is slightly bent below the cubital vein. The wings beneath much 
paler. The friuge between the points of the scallops is white. Hind wings above of the same 
pale hue as the underside of both pairs of wings. 
