178 MEMOIES OF THE XATIONAL ACADEMY OF SCIENCES. 



Pack., Proc. Ent. Soc. Phil., iii, ]>. 358, 1864. 

 Giote, New Check List X. Aiiier. Moths, p. 19, 1882. 

 Smith, List Lep. Uor. Amer., p. 30, 1891. 

 Kirby, Syu. Cat. Lep. Met., i, p. 572, 1892. 

 SjimmeriKia Neum. and Djar, Trans. Amer. Ent. Soc. xxi. p. IN", .Jinio, isiil ; .loiirn. N. Y. Ent. Soc, ii, p. 114,. 

 Sei)t.. 1S94. 



Moth. — Vertex (if the Lend with two huye tufts uniting' and forining a large, higli, prominent 

 vertical tuft just above the in.sertioii of the aiitenme. The yeetiuatious of the <J autenn.Te are alittle 

 longer than the Joints, becoming gradually obsolete toward the tips; the jieetinations are densely 

 ediated; in the 9 the antenna' are entirely sinijih- and thread like. Eyes naked. The palpi are 

 usually long and slender, extending a tiiird of tlieir length beyond the front, and conniving at 

 their tips; third joint unusually long, equaling in breadth the width of the second joint. The 

 maxilla- are very short, not reaching out as far as tlii' palpi. The thorax is moderately robust,, 

 and is not tufted. 



The fore wings are unusually broad and square at the apex, being about half as long as broad; 

 COSta straight; the apex somewhat jiointed and square; outer edge near tiieapex nearly straiglit, 

 thence gradually rounded to the internal edge, which is not tufted. Venation: Quite unlike that 

 of Dasylophia and Xotodonta; a small short subcostal cell, and a second, minute one beyond; the 

 fourth subcostal venule ends on the costa within the apex; the discal venules are situated well 

 beyond the middle of the wing, and the two together form a nearly straight line; the independent 

 vein arises nearer the subcostal vein than usual. 



tJind wings louger 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 (lll^) arises much nearer 

 the subcostal than usual, and the discal veins taken together form an oblique (not curved) line. 



Legs rather slender; femora and tibia- pilose; the liind tibiie 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. 



The 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 square apex of tiie fore wings, with tlieir two 

 subcostal cells, and by the peculiar style of coloration. 



j^fl(^_ — "Subglobosc, slightly concave at the base, smooth, shining."' (Bentenmiiller.) 



Ijovn. — Body increasing in widtli from the iirothoracic to the eighth abdoininal segment, the 

 head nuinded, but slightly wider than the segment behind it. Skin smooth, shining; richly and 

 con.si(icuously banded with yellow or reddish bands and black lines; on the eighth al)dominal 

 segment a large, shiny, coralieddi.sli hump. Suranal jilate distinct, crescent-shaped. 



Young 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 subdorsal dark line. 



Cocoon. — "Made a cocoon in a roll of paper" (Harris C'orres]).). " Spins a thin, white web" 

 (Abbot and Smith); spins a thin, white web, through which tin- pujia can be .seen. 



Pup(t.— The abdomen ends in a short, cremasteral siiiue, which is flattened vertically, deejdy 

 clelt, with tubercles, from which arise from three to four curved seta- on each side, the entire 

 apjiaratus retaining a linn hold on the end of the mass of silk by which it adheres to the leaves. 



(icoiirHpMcal (Untyibution. — So far as known, the species found iu the United States are- 

 confined to the Appalachian and Austrnripariaii subjirovinces of North America, extending from 

 Maine to l'"lorida and thence westward to Texas. 



In Presidio,' Mexico, lives S. mnndcla (Edema mandchi of Druce, Biol. Centr. Amer. Het., i, p.. 

 23.J. pi. 2."), fig. 3), which in the sinqie of the fore wings is allied to iS'. alhi/rviis, but ditfers 

 decidedly in the marking, not having the white costal region. 



' By Presidio we suppose is meant Presidio del Norte, which is in northern Mexico, on the southern liank of the 

 Rio Grande, .just over the Texas border. This species should therefore be looked for in south wcsteru Texas and 

 southern New Mexico. 



