AMERICAN LEPIDOPTERA. 21 



Eleven males and seven females are under present observation. 

 The species is not rare and is very widely distributed. I have no 

 record of its occurrence south of Northern New Jersey ; but it ex- 

 tends through British America and the Northern United States, 

 from the Atlantic to the Pacific, with very little variation. 



The antenn?e of the male are ciliated, but not much more so than 

 in the female. The thoracic vestiture is mixed, fine and flattened 

 hair, with the latter somewhat predominating. 



Xyliiia oriuiida Grote. 



1874, Grt., Bull. Buff. Sue. Nat. Soi., ii. 160, Lithophane. 



1893, Smith, Bull. 44, U. S. Nat. Mus., 228. Xylina. 

 Head, thorax and primaries red-lirowu. Abdomen and secondaries smoky, 

 with a brown tinge, the fringes concolovous except at the tip, where they are 

 whitish. Head with a black line below the ordinary tufts; antennse with yellow 

 scales at base, and in the male with black, elevated scales thickening the basal 

 third on the inner side. Collar tipped with yellow scales, below which, at the 

 base of the rather low, divided crest, there is a narrow black line. Primaries 

 with the costal region yellowish white to the t. p. line, interrupted by shades of 

 the ground color and by the geminate median lines. There is a small, black, 

 longitudinal line at base extending to the basal half line, and above this the 

 basal space is whitish. T. a. line marked in the pale costal space and then lost, 

 except for the black tooth in the suhmedian interspace, which is connected by a 

 black patch with the t. p. line. T. p. line marked on the costa, thence indicated 

 by geminate white dots on the veins, except in the submediau interspace, where 

 a curved black line limits the blackish patch which extends from the outward 

 tooth of the t. a. line. S. t. line whitish, slender, irregularly though not strongly 

 sinuate, emphasized by a fragmentary, somewhat more rusty brown shade and 

 by a slightly darker terminal space. Black, followed by pale scales base the con- 

 colorous fringes, which are narrowly cut, opposite the veins, by pale lines. The 

 median shade is marked across the costal space only. Orbicular narrow, oblique, 

 oblong, white ringed. Eeniform moderate in size, a little enlarged above, white 

 ringed and superiorly white powdered. Beneath primaries smoky, terminal 

 space brown, powdery, as is the entire costal region ; discal spot obvious. Second- 

 aries powdery, reddish brown in the costal region, becoming more yellowish in- 

 wardly, with a smoky exterior line and a distinct, smoky discal spot. 

 Expands 34-37 mm. = 1.36 1.48 inches. 



Hab.— Canada; Pennsylvania; Wisconsin. 



There is only, a single male before me at present and I have seen, 

 perhaps, half a dozen others, recently ; none of them diflering in 

 any important particulars from the description just given. Tliere 

 seems to be a little variation in tlie depth of the ground color, and 

 in the extent of the pale powdering along the costa ; but there is no 

 chance of mistaking the species. The antenuiie of the male are cili- 

 ated and a little scale thickened at the base. 



The thoracic vestiture is a mixture of fine and flattened hair. 



TRANS. AM. ENT. SOC, XXVII. AUGUST, 1900 



