158 3IEMUIIiS OF TUE NATIONAL ACADEMY OF SCIENCES. 



Smith, List. Lep. Bor. Amer., p. 30, 1890. 

 Kirby, Syn. Cat. Lep. Het., p. 607, 1892. 

 Pheosia autl XalofJonta, (in part) Nciim. anil Dyar. Tiaus. Anier. Eut. Soc, xxi, p. 195, June, 1894; Jonrn. 

 N. Y. Knt. Soc, ii, p. H5, Sept., 1894. 



Moth. — Head moderately promim-iit, much as in Notodoiita, rather small, front narrower than 

 nsnal. Auteuiue in S narrowly pectinated to the tips, with tine short pectinations, not being^ 

 simple. Palpi nnusually small, rather slender, not reaching to the front, porrect. Eyes naked. 



Thorax not very stout, subglobose; not tufted. 



Fore wings uunsnally- long and narrow; costal edge very convex, apex much ]iroduced and 

 rounded subacute; outer edge very obli(iue, in 9 , more convex tliaii in the S ; 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 reach when expanded three-fourths 

 of the distance to end of abdomen; i)roduced 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 fifth; anterior discal veiu very obliipie, directed inward; in the hind 

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

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



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

 obtuse, rounded. 



Coloration: The species are whitish and brownish, with dark brown longitudiual intervenular 

 streaks; no cross wavy lines or discal spots. 



The genus is characterized by the S autenua> 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 tlie fore wings. 



I](j(l. — Hemispherical; shell ornamented with den.se microscopic granulations. 



Larra. — Head rather small, narrower 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 bauds. Freshly 

 hatched larra: 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 lu walking. 



Cocoon. — A subterranean cell lined with silk. 



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



Geof/raphical disfribution. — 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 (Souorau) 

 subprovinces. 



Pheosia dimidiata (Herrich-Schaefler). 

 (PL VII, fig. II.) 



Dripnonia dimirliata H.-Sch., Samiul. aussereur. Selimett., p. 6t), fig. 515, 18.56. 



rheoshi rimosa Pack., Prcic. Ent. Soc. Phil., ill, p. 358, 1804. 



Notodonta californica Stretch, III. Zyg. and Bomb. N. Amer., i, p. 116, PL IV, fig. 5; Larva, plate 10, fig, 9, 1872. 



riieosia dictcva Lintner, Ent. C'ontr., iv, p. 76, June, 1878. 



Notodonta (Pheosia) rimosa Tepper, Bull. Brooklyn Ent. Soc, i, p. 3, 1878. 



t'hcosia rimosa Grote, New Check List. N. Amer. Jloths, p. 19, 1882. 



Pheosia dimidiata Grote, New Check List N. Amer. Moths, p. 19, 1882. 



Pheosia californica Grote, New Check List N. Amer. Moths, p. 19, 1882. 



Pheosia rimosa Pack., Fifth Eep. U. S. Ent. Comm., p. 455, 1890. (Fig. of larva in text.^ 



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



Dyar Psyche, vi, p. 128, 1891. 



Kirliy, Syn Cat. Lep. Het.,i, p. 607, 1892. 



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

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

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

 Uyar, Psyche, vi, pp. 351-353, Nov., 1892. 

 Notodonta dtscherci Neumogen, Can. Eut., xxiv, p. 227, September, 1892. 



Pheosia dimidiata Neum. and Dyar, Traus. Amer. Ent. Soc, xxi, p. 195, June, 1894; Journ, N. Y. Ent. Soc, 

 ii, p. 115, Sept., 1894. 



