26 JOHN B. SMITH. 



iniukiiiffs ohscnrefl. Head and thorax witliout oinamt'iitation, except an obscure 

 frontal line. The thoracic crest proniiuent, divided. Primaries with the niark- 

 in<rs extremely vague, in one specimen showing only a smoky median shade, 

 which is brightest on the costa, is bent at the end of the cell and is a little empha- 

 sized by a short blackish dash in the submedian interspace. In the best marked 

 specimen the ground color is a little brighter. T. a. line is traceable, very nar- 

 row, black, irregular, strongly bent outward, so that at the submedian interspace 

 it forms a sharp tooth whose apex is about at the middle of the wing. Above 

 that point it is outcurved between the veins; below that point it makes a long 

 inward angulation and is hardly traceable below the internal vein ; a few whit- 

 ish scales may emphasize this blackish line. The t. p. line is brownish, very 

 slender, barely traceable over the cell where it is crenulate, a little better marked 

 below that point, becoming black in the submedian interspace where a short 

 black dash connects it with the t. a. line. The median shade is broad on the 

 costa, filling the outer part of the median space, narrowing toward the middle of 

 the wing and less evident toward the inner margin. The s. t. line is marked by 

 two triangular dusky shades, the first of which leaves the apex clear, and has its 

 ])oint at a black spot which almost touches the t. p. line between veins 4 and 5. 

 The second of these comes to a point at a blackish spot which is just below vein 

 2. The ordinary spots are just traceable, the orbicular is elongate, oval, of the 

 gray ground color, vaguely outlined in brown. The reniform is upright, rather 

 narrow, with a blackish point inferiorly, the outline a trifle paler than the sur- 

 rounding tint. The fringes have a pale interline. Secondaries a somewhat silky 

 brownish gray, the veins a trifle more dusky, and a vaguely marked discal spot. 

 There is a smoky terminal line at the base of the whitish fringes. Beneath 

 smoky gray, powdery, the secondaries with a small discial spot. 

 Expands 35-37 mm. = 1.40 1.50 inches. 



Hah. — Colorado. 



Two females only are before ine. The species is rather readily 

 recognizable by its small size for this series, and by the soft pow- 

 dery ashen gray, in which the maculation is almost entirely l().st. A 

 somewhat dusky cloud through the centre indicates a median shade. 



Xylina fagiiia Morrison. 



1874, Morr., Bull. Bufi". Soc. Nat. Sci.. ii, 115, Lifhophane. 



1887, Grt., Can. Ent., xix, 54, Lithophane. 



1893, Smith, Bull. 44, U. S. Nat. Mus., 228, Xi/lina. 

 .Head, thorax and primaries light, bluish, ashen gray, .\bdomen and second- 

 aries light smoky, with a reddish tinge, fringes almost white. Head with a whit- 

 ish line between the antennsB, separating the otherwise ill-marked frontal tufts; 

 f)elow this point is a brown line or the entire front is darker. Collar with a nar- 

 row black line surmounting a reddish line a little ab(jve the middle and not ex- 

 tending to their margin. Thoracic crest prominent, obtuse but not divided at 

 tip. No dorsal abdominal tuftings. Primaries paler, more whitish along the 

 costa, veins narrowly black lined, some narrow black interspaceal teeth, else 

 practically no maculation. Most specimens have a series of small, obscure, 

 smoky s. t. spots, but these are often wanting. The oi'dinary spots are com- 

 pletely lost in most specimens and only indicated by paler shadings at ))est. 

 Expands 42-47 mm. = l.()8-1.88 inches. 



