178 
MEMOIES OF THE NATIONAL ACADEMY OF SCIENCES. 
Pack., Proc. Ent. Soc. Phil., iii, p. 358, 1864. 
Grote, New Check List N. Auier. IMoths, p. 19, 1882. 
Smith, List Lep. Bor. Araer., j). 30, 1891. 
Kirby, Syu. Cat. Lep. Met., i, p. 572, 1892. 
Si/mmerinta Neum. and Dyar, Traus. Amer. Eut. Soc., xxi, p. 187, .June, 1894; Jonrn. N. Y. Ent. Soc., ii, p. 114,. 
Sept., 1894. 
2Ioth . — Vertex of tiie liead with two large tufts uniting aiul forming a large, high, prominent 
vertical tuft just above the insertion of the aiiteniue. The pectinatious of the $ autemue are a little 
longer tliaii the joints, becoming gradually obsolete toward the tips; the pectinations are densely 
ciliated; in the 9 the antenme are entirely simple and thread like. Eyes naked. The palpi are 
usually long and slender, extending a third of their length beyond the front, and conniving at 
their tips; third joint unusually long, equaling in breadth the width of the second joint. The 
maxilhe are very short, not reaching out as far as the palpi. The thorax is moderately robust,, 
and is not tufted. 
The fore wings are unusually broad and square at the apex, being about lialf as long as broad 
costa straight; the apex somewhat pointed and square; outer edge near the apex nearly straight, 
thence gradually rounded to the internal edge, which is not tufted. Venation: Quite unlike that 
of Dasylophiu and iTotodouta; a small short subcostal cell, and a second, minute one beyond; the 
fourth subco.stal venule ends on the costa within the apex; the discal venules are situated well 
beyond the middle of tlie wing, and the two together form a nearly straight line; the independent 
vein arises nearer the subco.stal vein than usual. 
Hind wings longer than usual, the outer two-thirds of the costa straight; the outer edge 
regularly rounded, slightly bent in the middle. Venation: Tlie subcostal vein divided about 
halfway between the discal veins and the outer edge; the independent vein (HIj) arises much nearer 
the subcostal than usual, and the discal veins taken together form an oblique (not curved) line. 
Legs rather slender; femora and tibiic pilose; the hind tibue with long hair-like scales; the 
tibial spurs rather stout, with the ends sharp and naked. 
Coloration: The species gray, with cross lines and the costal edge white. 
Tlie genus may be recognized by the high conical vertical tuft on the head, by the unusually 
long palpi, and by the straight costal edge and squai’e apex of the fore wings, with their two 
subcostal cells, and by the jiecidiar style of coloration. 
E(fg. — “Subglobose, slightly concave at the base, smooth, shining.” (Beutenmiiller.) 
Larva. — Body increasing iu width from the prothoracic to the eiglith abdominal segment, the 
head rounded, but slightly wider than the segmeut behind it. Skin smooth, shining; richly and 
conspicuously banded with yellow or reddish bauds and black lines; on the eighth abdominal 
segment a. large, shiny, coral-reddish hump. Suranal plate distinct, crescent-shaped. 
Yonmj larva , — Anal legs smaller than the other abdominal ones; body moderately thick; a 
slight dorsal hump on the eighth segment, with minute, short, slightly bulbous hairs; a lateral 
dark brown line and a yellowish spiracular band and a siibdoi'sal dark line. 
Covoon. — “Made a cocoon in a roll of paper” (Harris Corres]).). “Spins a thin, white web”' 
(Abbot and Smith); spins a thin, white web, through which the pupa can be seen. 
Pupa, — The abdomen ends in a short, cremasteral spine, which is tlattened vertically, deejd^" 
cleft, with tubercles, from which arise from three to four curved setm on each side, the entire 
api)aratns retaining a linn hold on the end of the mass of silk by which it adheres to the leaves. 
Geographicid (listrilmtwn. — So far as known, the species found in the Huited States are 
coniined to the Appalachian and Austroriparian subprovinces of Isorth America, extending from 
Maine to Florida and thence westward to Texas. 
In Presidio,^ Mexico, lives S. rnandela [ Edema mandela of Druce, Biol. Oeiitr. Aiiier. Het., i, p. 
235, pi. 25, fig, 3), which in the sliape of the fore wings is allied to S. alhifronSj but differs 
decidedly iu the marking, not having the white costal region. 
i By Presidio wo suppose is meant Presidio dol Norte, wliick is in northern Mexico, on the southern bank of the- 
Eio Grande, Just over the Texas border. This species should therefore be looked for iu .southwestern Texa.s and 
southern New Mexico. 
