OF WASHINGTON, VOLUME XI, 1909, 129 



lection of Mr. J. A. Grossbeck, of New Brunswick, who cour- 

 teously turned it over to me for inclusion in this paper. Though 

 not in first class condition, having no hind legs, the snow-white- 

 collar and thoracic line present features quite apart from evcrv 

 other species known to me. Its style of markings suggests the 

 genus Nasnsina Pears., and it may be found, when perfect 

 specimens are at hand, to belong there. 



Mesoleuca actuate, new species. 



Expanse, 22 to 24 mm. 



Palpi and front dark brown or blackish, the fomer very short, bushy. 

 Collar, vertex, and body above much paler, by a liberal admixture of 

 whitish with pale brown scales. Thorax paler centrally, with its double 

 posterior tufts tipped with white. Primaries, ground-color pale ashen, 

 tinged with yellow-brown and white. Basal line curved regularly out- 

 ward at centre reaches inner margin nearer the base than on costa. 

 Between this and discal space is a broad band of ground-color, centrally 

 washed with pale roseate brown. About one-third out the internal 

 wavy boundary line of discal space leaves costa with an outward curve, 

 forming above vein 1 a sharp inward tooth, thence to inner margin a 

 little more than one-third out. Base and discal cross-band black, the 

 latter twice as wide costally as on inner margin, and filled with ringlets 

 of paler color, one of which encloses the almost invisible discal dot. 

 In one of my specimens the central band is dark brown. Its external 

 line is very irregular. Leaving costa two-thirds out it makes a sharp 

 outward tooth below it, then after a strong inward curve, two others 

 rounded between veins 2 and 4, the upper smaller and longer. A sweep 

 inward narrows the discal space at this point, where a small scallop is 

 succeeded by a heavy outward protrusion between veins 1 and 2, reach- 

 ing, with a smaller one, the inner margin about two-thirds out. The 

 discal space is sharply bordered, both externally and in a lesser degree 

 internally, by a geminate clear-white band following its every irregular- 

 ity. A broken shade line of brownish or gray follows it. Subterminal 

 space whitish or ashen, having at costa a square brownish or gray 

 patch, below which two short jet-black lateral streaks fill in the con- 

 volutions internally of the white scalloped subterminal line. Two other 

 small crescents are placed diagonally above these toward apex. Termi- 

 nal line fine black, cut at veins and often into a series of double dots 

 between veins toward apex. Fringes moderate, gray, darkened some- 

 what with brown, especially opposite veins. A clear white dot, appar- 

 ently an emphasis of the subterminal hair-line, is noticeable on all the 

 specimens before me between veins 2 and 3. Secondaries an even pale 

 gray, marked only by the small faint discal dot and a continuation of 

 the irregular white geminate line of primaries, rounded out from costa, 

 wavy, but showing less definitely the double teeth between veins 2 and 4, 



