IJOQ THE CANADIAN ENTOMOLOGIST 



round, edged with black, pale-filled; reniform semilunate, edged ' with black, 

 pale-filled ; claviform a minute black loop ; t. p. line strong, dentate, black, edged 

 outwardly by pale color, bent outward below costa, then rather rigidly oblique to 

 inner margin ; s. t. line defined by paler terminal shading and preceded by dark 

 dashes which form opposite cell a distinct dark patch ; broken dark terminal 

 line and checkered fringes. Secondaries smoky, paler basally with dark discal 

 dot and traces of curved median line ; terminal dark line, slightly broken ; fringes 

 pale. Beneath dull smoky with indistinct broad curved median shade on both 

 wings as well as discal dots. Expanse 36-38 mm. 



Holotypc, 1 c^, Banff, Alberta (J. B. WalHs), July 4th. in Canadian 

 National Collection. 



Paratypes, 2 c^'s, Kaslo, B. C, July 24th, Aug. 7th (J. W. Cockle), in 

 Canadian National Collection and Collection of Mr. Cockle. 2 c^'s, Nordegg, 

 Alta., June 23rd, July 20th (J. McDunnough). in Canadian National Collection. 



Several other specimens from Nordegg are in the Bowman Collection. 



The species is superficially similar to spcciosa Hbn., but quite distinct in 

 genitaHa; in the holotype the distal end of the clasper (fig. 1) is drawn out to 

 four points, of which the dorsal one is longest, and on the ventral margin a 

 short distance from apex the clasper is furnished with a blunt curved projection 

 somewhat similar to that of the preceding species; in the paratypes the middle 

 teeth are reduced to mere knobs and the apical margin is shorter and more 

 obhque, much closer in general appearance to the clasper of beddeki Hamp. The 

 fore tibiae show only one or two spines in the distal area. 



Among the specimens sent by Dr. Wm. Barnes were two specimens from 

 Upper Ramparts, Yukon Territory, which are quite obviously allied to atrata 

 Morr, and which apparently represent a paler, northern race of this species as 

 I can detect no differences in the shape of the terminal portion of the clasper 

 of the two forms. 



Pteroscia atrata yukona n. var. 



Fore tibiae spined. ^IMiorax an admixture of brown and gray scaling. 

 Primaries rather light purplish-brown, distinctly shiny; maculation rather in- 

 distinct ; t. a. line slightly darker than ground color, defined inwardly by pale 

 ochreous shading, most prominent as a pale costal patch, slightly dentate in cell, 

 well outcurved in submedian fold, angled inwardly on vein 1 ; orbicular minute, 

 indistinct, pale-filled; reniform small, narrow, lunate, pale-filled; t. p. line 

 prominently dentate, edged outwardly with pale ochreous, well rounded opposite 

 cell and bent inward in submedian fold, approaching t. a. line closely at 

 inner margin. Several pale dashes on costa between t. p. line and apex of wing 

 and pale terminal dots on outer margin at extremity of veins ; fringes con- 

 colorous. Secondaries pale smoky with faint discal dot and dark terminal line. 

 Beneath pale smoky, primaries with noticeably darker fringes broken by pale 

 dots, secondaries with dark terminal line ; traces of discal dots and bent median 

 line on all wings. Expanse 37 mm. 



Holotypc, 1 ^, Upper Ram])arts, Yukon Terr. (June 8th, 1917), in 

 Collection Barnes. 



Paratypc. 1 c^. Upper Ramparts, Yukon Terr., (July 17, 1917), in 

 Canadian National Collection, through courtesy of Dr. Barnes. 



