158 MEMOIRS OF THE ^lATIONAL ACADEMY OF SCIENCES. 
Smith, List. Lep. Bor. Ainer., p. 30, 1890. 
Kirby, Syn. Cat. Lep. Het., p. 607, 1892. 
Pheosia and Noiodonia, (in part) Neuiu. and l»yar, Trans. Ainer. Ent, Soc., xsi, p. 195, June, 1894; Journ- 
N. Y. Ent. Soc., ii, p. 115, Sept., 1894. 
Moth, — Head moderately prominent, much as in K'otodoiita, rather small, front narrower than 
usual. Aiitenme in 6 narrowly pectinated to the tips, with fine short pectinations, not being- 
simple. Palpi unusually small, rather slender, not reaching to the front, porrect. Eyes naked. 
Thorax not very stout, subglobose; not tufte<l. 
Fore wings unusually long and narrow; costal edge very convex, apex much produced and 
rounded subacute; outer edge very obliipie, in 5 , more convex than 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 
lirojecting outward rather thau downward. The hind Avings reach when expanded three-fourths 
of the distance to end of abdomen; i>rodiiced toward the rounded apex; costa nearly straight; 
internal angle much produced on the end of Vein VI, with a Avell-marked tuft. 
Venation: Xo subcostal cell, though the first subcostol venule approaches its main vein very 
closely at the origin of the fifth; anterior discal vein very oblir^ue, directed inward; in the hind 
wings, A'Cnation much as in Xotodouta, except that both discal veins are directed inward, forming 
a V, Avhereas in Xotodonta the two form one straight line directed outward. 
Legs not A^ery stout; tibise with a flat broad tuft. Abdomen cylindrical, rather long, tip 
obtuse, rounded. 
Coloration: The species are whitish and broAvnish, Avith dark brown longitudinal interveuular 
streaks; no cross Avavy lines or discal spots. 
The genus is characterized by the $ anteunm being lAectinated to the tip, by the small palpi, 
by the long Aviiigs pointed at the apex, and by the small tuft on the edge of the fore wings. 
— Hemispherical; shell ornamented with dense microscopic granulatioiLs. 
Larva, — Head rather small, narrower than the segments behind; body gradually increasing 
in AAudth to the eighth abdominal segment, Avhich is either humped or bears a horn; suranal iflate 
long, lunate, coarsely granulated; skin smooth, polished; no distinct stripes or bands. Freshly 
hatched larva: Head rather lai'ge, flattened, subcordate; a broad black prothoracic plate; on the 
eighth abdominal segment a single dorsal oval Avart; end of the body held up in walking. 
Cocoon, — A subterranean cell lined Avith silk. 
Fnpa -Body rafher slender; cremaster divided into two veiy short divergent si)iues, 
Geof/raphical distribution. — 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 kuoAvn to inhabit the Austrorii)arian or Mexican (Sonoran) 
subproviuces. 
Pheosia dimidiata (Herrich-Schaefter). 
(PI. VII, fig. 11.) 
Drijmonia dimidiata H.-Scli., Samiul. aussereur. Schraett., p. 66, ftg. 515, 1856. 
Pheosia rlmosa Pack., Proc. Ent. Soc. Phil., iii, p. 358, 1864. 
J^^oiodonta calif ornica Stretch, 111. Zyg. and Bonih. K. Anier., i, p. 116, PI. IV, fig. 5; larva, plate 10, fig. 9, 1872. 
Pheosia dicUea Liutner, Ent. Contr., iv, p. 76, .June, 1878. 
Koiodonia (Pheosia) rimosa Tepper, Bull. Brooklyn Ent. Soc., i, p. 3, 1878. 
Pheosia idniosa Grote, New Check List. N. Amer. Moths, p. 19, 1882. 
Pheosia dimidiata Grote, New Check List N. Anier. Moths, in 19, 1882. 
Pheosia catifornica Grote, New Check List N. Ainer. Moths, p. 19, 1882. 
Pheosia rimosa Pack,, Fifth Kep. U. S. Ent. Coimu., p. 455, 1890. (Fig. of larva in text.) 
Pheosia rimosa Smith, Cat. Lep. Bor. Amer., p. 30, 1891. 
Dyar. Psyche, vi, p. 128, 1891. 
Kirby, Syn, Cat. Lep. p. 607, 1892. 
Pack., Joum. N. Y'ork Ent. Soc., i, p. 63, 1893. (Life history.) 
Pheosia porilandia Edwards, Ent. Anier., ii, p. 168, 1886. 
Smith, List Lep. Bor. Amer., p. 30, 1891. 
Dyar, Psyche, vi, pp. 351-353, Nov., 1892. 
Noiodonia dtscherei Neiimogen, Can. Ent., xxiv, p. 227, September, 1892. 
Pheosia dimidiata Neum. and Dyar, Trans. Amer. Ent. Soc., xxi, p. 195, June, 1894; Journ. N. Y. Ent. Soc., 
ii, p, 115, Sept,, 1894. 
