TOL. XIII 



J PROCEEDINGS OF THE NATIONAL MUSEUM. 425 



SYNOPSIS OF SPECIES. 



A distinct W mark in s. t. liue ; blackish gray, tuftings very prominent ducta 



No W mark in s. t. liue. 



Purplisli black ; markings velvety black impulsa 



Ash gray or darker; t. p. line even, or but little dentate devastatrix 



T. p. line distinctly dentate and crenate. 

 Luteons or rusty brown, with black and white pow derings, the latter most promi- 

 nent on the veins EXULis 



Median space luteous brown, otherwise gray or paler sommeri 



Xylophasia ducta Grt. 



1878. Grt., Bull, U. S. Geol. Surv. iv 176, Hadena. 



separans Grt. 

 1880. Grt., Bull. U. S. Geol. Surv. vi 260, Hadena. 



Blackish, or smoky fuscous, the lines black. Basal liue geminate, 

 rather indistinct, resting on a small longitudinal black mark; a similar 

 small black dash at internal margin, often obsolete. T, a. line out- 

 wardly curved between veins; inner portion of the line obsolete. T. p. 

 line dentate or crenulate on veins, outwardly curved over cell, and with 

 an inward curve below that point. S. t. line whitish, often interrupted, 

 and more or less punctiform ; forming a distinct, though small, W on 

 veins 3 and 4; preceded by black sagittate dashes in interspaces, and 

 followed by more or less distinct similar marks connecting with a series 

 of small terminal dots. Claviform concolorous, black-ringed, variable 

 in size, and often connected with t. p. line by a blackish shade. Ordi- 

 nary spots large, narrowly black ringed, slightly paler; reniform, with 

 a series of white scales near outer margin. Secondaries blackish gray, 

 paler at base; a dusky discal spot. Beneath blackish, powdery, with 

 outer line and discal spot. Head and thorax concolorous, with prima- 

 ries; palpi white marked. 



Expands 40 to 42 millimetres, l.GO to 1.68 inches. 



Habitat: New York, Wisconsin, Maine, Washington. 



Rather widely distributed, but not common. No $ has been obtain- 

 able for dissection, though m'c have seen that sex. Mr. Grote's separ- 

 ans was based on a pale specimen, with a more than usual resem- 

 blance to devastatrix. 



Xylophasia impulsa Gn. - 



1852. Gn., Sp. Gen. Noct. i, 194, Mainestra. 



1856. Wlk., C. B. Mus. Lep. Het., ix, 231, Mamestra. 



1873. Grt., Buflf.Bull. i, 108, Hadena. 



V. mixta Grt. 

 1880. Grt., Bull. U. S. Geol. Surv. vi, 264. 



Black, with a purplish tinge, the markings intense, velvety black, the 

 lines geminate. Basal line distinct, joining a short basal streak. T. a. 

 line outwardly oblique or arcuate, curved between veins, inner line less 

 distinct except at hind margin, where it joins a deei> black streak 

 .toward base. T. p. line bisinuate, the inner line lunulate, the on<:er less 



