74 



shaped, not distinct, surrounded by a faint black line, with a grayish center; 

 t, p. line black, bent outwardly below costa, dentate, incurved below vein 4, 

 bordered outwardly by a distinct line of white scaling; s. t. line pale, defined 

 by black on the inner side; a terminal row of dots between the veins; fringe 

 black and white, checkered, with a strong black interline. Secondaries : whitish 

 with a considerable suffusion of fuscous; a heavy black discoidal spot present; 

 outer margin with a broad black band ; medial band present. Fringe pale with 

 a blackish interline. Beneath : pale, whitish, heavily dusted with fuscous ; with 

 black discoidal spots, median shade lines, and broad outer bands prominent. 

 Fringes; as above. 



Expanse: 27-31 mm. 



Closely allied, by the heavy maculation of the secondaries, to A. 

 hampa under which name it had been standing in the Barnes Collec- 

 tion; but abundantly distinct by its yellowish and more heavily ser- 

 rate antennae. 



There is a pair of specimens apparently representing this species 

 in the Canadian National Museum from Mt. Cheam, B. C. 



Type locality: Alberta. 



Number and sexes of types: Holotype $, 15 June 1917; Allotype 9, 14 

 June 1917, both Pocahontas, Alta. ; Paratype $ , whose locality label is unread- 

 able other than "Alta., 13-VIII-Ol, Mrs. Nichall, Collector", from Dod Col- 

 lection. 



Types in: Barnes Collection; Paratype in Canadian National Museum. 



Lasionycta alberta sp. nov. 



Eyes hairy, heavily ciliated. Antennae of male very heavily serrate and 

 fasciculate; of female, ciliated. Thoracic vestiture of mixed hair and hair- 

 like scales. Primaries appearing blackish due to a very heavy black irroration 

 over a blue-gray ground ; basal line present, obscured ; t. a. line blue-gray edged 

 with black on outer side; orbicular variable, usually clearly outlined with blue- 

 gray and with some central black scaling; reniform often obscured, when vis- 

 ible, outlined with blue-gray, and with some black filling especially in the lower 

 part; a trace of a medial blackish shade present, sometimes obscuring the space 

 between the stigmata; claviform prominent, outlined with black, — sometimes 

 connected to the t. p. line by a black bar; t. p. line blue-gray edged with black, 

 inwardly produced to points on the veins ; s. t. line obscure, with a tendency 

 to be broken; heaviest between the veins where it produces sagitate dashes 

 which partially cross the s. t. space; terminal space usually somewhat paler 

 than the rest of the wing, marked at the base of the fringes by obscure black 

 dots between the veins. Fringe pale, checkered with black, and with a black 

 interline. Secondaries: dull blackish fuscous, only slightly paler basally, their 

 fringes pale, heavily interlined with dull fuscous. 



