444 ON SPECIES OF HADENA SMITH. 



the ordinary Eastern form ; the yellow pale, the white powderings rather 

 dense, the transverse lines broad, and the dusky median line of second- 

 aries distinct. The head is fairly prominent, though smaller and more 

 retracted in the 9 ; the thoracic tufting is distinct, and the secondaries 

 beneath have a distinct thongh interrupted outer line. In Colorado oc- 

 curs a form of what I take to be merely a variety of the Eastern form, 

 but which may eventually prove distinct. It is somewhat smaller, the 

 head is more retracted, thoracic tufting less decided, the ground color 

 much deeper, more orange yellow, white lines narrower, powderings 

 sparse. 



The outer dark margin of secondaries is more intense, the inner line 

 very faint and close to the outer band. Beneath there is no extra median 

 line, and the marginal dark shade on both wings is strongly marked. 

 These differences seem permanent in the series before me, but I can not 

 convince myself they are specific, and propose the term montana for 

 the variety. 



Semilunata Grote is smaller than the preceeding, the head is still 

 smaller, more retracted with a strong suggestion of Anarta, height- 

 ened by the loose, indistinctly tufted thoracic vestiture, and the abdomen 

 is smooth, scarcely tufted in the 2 , and dark. The primaries are of a sor- 

 did blackish fuscous, the white lines often obscured, the yellow faint and 

 pale, sometimes hardly traceable, while the secondaries are also pale 

 and lack the median narrow line, though it is sometimes indicated. 

 Beneath it is very pale, and the outer common line is wanting. 



To a great extent the Colorado specimens fill the gap between this 

 species, found only in Washington thus far, and tiie eastern itiordinata, 

 but the very pale color, sordid blackish suffusion, and anartiform appear- 

 ance is distinctive, and probably three species w,ll be eventually rec- 

 ognized. 



Xylophasia inordinata Morr. 



1875. Morr., Proc. Ac. N. Sci. Phil. 1875, 63, Hadena. 

 Brownish yellow, varying from a shade verging on luteous to nearly 

 orange shaded with black and white to a greater or less extent. Median 

 lines geminate, very narrow, darker, included space white and promi- 

 nent, giving the appearance of simple white lines. T. a. line sinuate 

 and outwardly arcuate ; t. p. distinctly angulate beyond the cell, thence 

 rather evenly oblique to hind margin. S. t. line distinct, marked with 

 white scales; W mark prominent; line preceded by a series of black 

 sagittate marks. A row of black terminal lunules. Basal line very 

 indistinct, pale, angular ; basal space more or less powdered with black 

 and white scales, sometimes the one, sometimes the other predominat- 

 ing. Costal region usually white powdered to the apex. The median 

 space is black shaded, leaving a central space and the region beyond 

 reniform, of ground color. S. t. space more or less powdered. Termi- 

 nal space, except at apex, uniformly darker. The ordinary spots are 

 very variable in size and form, usually with darker center and white 

 annuli, sometimes entirely white. Secondaries dull yellow with broad 



