158 -"\Ii:ilUlKS OF TUE NATIONAL ACAUEMi' OF SCIENCES. 



Smith, List. Lep. Hor. Aiiii-r., p. :iO, 1890. 

 Kirby, S.vn. C;it. Lep. Uet., p. GOT, 1S'.)2. 

 PItiosia and Solodonta, (in part) Nruiii. aii<l Dyar, Trims. Aincr. Kiit. Sor., xxi, p. 195, June, 1894; Jonrn. 

 N. Y. Eut. Soc, ii, p. 115, Sept., 189L 



Moth. — nead moderately prominent, much as in Notodoiita, rather .small, IVont narrower than 

 nsnal. Antenna^ in S narrowly pectinated to the tips, with fine short pectinations, not beiny 

 simple. I'alpi unusually snuill, rather slender, not reaching to the front, porrect. Eyes mdved. 



Thorax not very stout, subglobose; not tufted. 



Fore wings unusually long and narrow; costal edge very convex, apex much ])rodnced and 

 rounded subacute; outer edge very obli(iue, in 9 , more convex than in the i ; inner edge full at the 

 base, straight toward the angle, the slight tuft on this angle being continuous with the edge and 

 projecting outward rather than downward. The hind wings rea<'h when expanded tliree-fourth.s 

 of the distance to end of abdomen; produced toward the rounded apex; costa nearly straight; 

 internal angle much produced on the end of Vein VI, with a well-marked tuft. 



Venation: No subcostal cell, though the first subcostol venule approaches its main vein very 

 closely at the origin of the tifth; anterior discal vein very oblique, directed inward; in the hind 

 wings, venation much as in Notodonta, except that both discal veins are directed inward, forming 

 a V,Avhereas in Notodonta the two form one straight line directed outward. 



Legs not very stout; tibi;e with a flat broad tuft. Abdomen cylindrical, rather long, tip 

 obtuse, rounded. 



Coloration: The species are whitish and browniish, with dark brown longitudinal intervennlar 

 streaks; no cross wavy lines or discal spots. 



The genus is characterized by the $ anteniue being pectinated to the tip, by the small palpi, 

 by the long wings pointed at the apex, and by the small tuft on the edge of the fore wings, 



E(jg, — Ileniisp&erical; shell ornamented with dense microscopic granulations. 



Zari-a. — Head rather small, nan-ower than the segments behind; body gradually increasing 

 in width to the eighth abdominal segment, which is either humped or bears a horn ; suranal plate 

 long, lunate, coarsely granulated; skin smooth, polished; no distinct stripes or bands. Freshly 

 hatched htrra: Head rather large, flattened, subcordate; a broad black prothoracic plate; on the 

 eighth abdominal segment a single dorsal oval wart; end of the body held up m walking. 



Cocoon. — A subterranean cell lined with silk. 



PffjM.— Body rafher slender; cremaster divided into two very short divergent spines. 



Gconraphicul rli.'itrihiition. — This genus is common to Europe and temperate North America 

 from the Atlantic to the Pacific; occurring in the North American region, including both the 

 Humid and Arid provinces, but not yet known to inhabit the Austroriparian or Mexican (Sonoran) 

 subprovinces. 



Pheosia dimidiata (Herricli-Scliaeffer). 

 (PL VII, lig. 11.) 



Drymonia dimidiata II.-Soli., SaiiiiuL auasoreur. Sclimett., )). 6(1, lijj. 51.5, 1856. 



I'heosia rimosa Pack., Proc. Eut. Soc. Pliil., iii, p. 358, 1861. 



Notodonta californiia Stretch, 111. Zyg. anil Romlj. N. Anier., i, p. 116, PL IV, fig. 5; larva, ])lato 10, fig. 9, 1872. 



rhconia dictaa Lintucr, Eut. Contr., iv, p. 76, .lune, 1878. 



Kotodoiita (Pheosia) rimosa Tepper, Bull. Hrooklyn Eut. Soc., i, p. 3, 1878. 



VUeoaia riinom Groto, New Check List. N. Amer. Moth.s, p. 19, 1882. . 



Pheosia dimidiata Grote, Now Check List N. Anier. Moths, ]). 19, 1882. 



I'heosia californica Groto, Now Check List N. Anier. Jlotlis, p. 19, 1882. 



I'heosia rimosa Pack., Fil'tli Rep. U. S. Ent. Comui., p. 455, 1890. (Fig. of larva in text.) 



Pheosia rimosa Smith, Cat. Lep. Dor. Amer., p. 30, 1891. 



Dyar Psyche, vi, p. 128, 1891. 



Kirby, Syu. Cat. Lep. llet.,i, p. 607, 1892. 



Pack., Journ. N. York Ent. Soc, i, p. 63, 1893. (Life history.) 

 Pheosia portlandia Edwards, Ent. Amer., ii, p. 168, 1886. 

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

 Dyar, Psycho, vi. pp. ,351-3.53, Nov., 1892. 

 Sotodonta deacherei Neumogen, Can. Ent., xxiv, 5. 227, September, 1892. 



Pheosia dimidiata Neum. and Dyar, Trans. Amer. Eut. Soc, xxi, p. 195, ,Tune, 1894; .Journ. N. Y. Ent. Soc, 

 ii, p. 115, .Sept., 1894. 



