144 THE CANADIAN ENTOMOLOGIST. 



line contrasting from ground colour, curved outwardly, then lost in the 

 black suffusion opposite lower end of reniform. The suffusion extends to 

 costa between the ordinary spots. Posteriorly it encloses lower part of 

 reniform and ends in a blunt spur nearly reaching to s. t. line. The s. t. 

 line is indicated by brownish spots in the interspaces, best marked 

 oppasite cell and near submedian vein. A row of terminal black spots, 

 clearly defined. Terminal space mottled with black, most pronounced 

 near hind angle and opposite cell. 



Fringe of primaries dark gray. Reniform almost square, clearly 

 defined basally, marked vvith brown and black. Orbicular gray, faintly 

 centered by a brown dash, strongly contrasting from the deep black, open 

 to cosla, intermediate space to costa concolorous with orbicular, somewhat 

 broadening at costa. Claviform is indicated in all three examples by a 

 feeble oblong ring, marked with a few gray scales in outer end. Abdomen 

 gray, strongly tinged with carmine, most prominent on under side. Sec- 

 ondaries smoky, intensified along outer m.argin, terminus clear-cut, fringe 

 gray, concolorous with base of secondaries. On under side primaries are 

 strongly tinged with carmine along costa and outer margin, otherwise 

 smoky-gray. Discal spot fairly evident, dark gray. Secondaries tinged 

 all over with carmine, exterior line well marked, smoky. Discal spot dark 

 gray. 



Expands : 35-40 mm. 



Habitat. — West Liberty, Allegheny Co., Pa., Oct. 25, Nov. 19 and 

 Nov. 20, 1904. Taken at "sugar." Coll. Engel. 



This species is allied to querqiiera and viridipallens in general 

 habitus. These two species were compared. Xylhia Bailey i is also 

 closely allied to this group according to the description ; I have only seen 

 it in the figures given in the " Moth Book " and in the revision of. the 

 genus Xylina by Prof. John B. Smith. Nigrescens is at once removed 

 from all the allied species by its primaries being intense iridescent black 

 for two-thirds of the wing from the base. It is a most strikingly marked 

 kind. With the wings folded and the gray thorax and apical part of the 

 ])rimaries strongly contrasting, it is easy to notice on the "sugar" patch 

 under the glare of the lantern. A fourth example was taken by Mr. 

 Merrick at New Brighton, Pa. Taking the constancy of these four 

 specimens as a basis, I do not hesitate to give it a name, 



