137 



Closely allied to Colorado Sm. (chandleri Hamp., Grote partim., 

 nee Grote) but a much smoother looking species, lacking the black 

 shadings around the claviform, the blackish filling to the ordinary 

 spots, and the generally patchy, black and white appearance, of 

 Colorado. 



Two specimens have been standing for several years in the Barnes 

 Collection as Colorado; a third specimen was submitted by Mr. Mackie 

 for identification ; and a fourth, by Mr. Bowman. 



Type locality: Edmonton, Alberta, (D. Mackie and K. Bowman). 



Number and sexes of types: Holotype $, 20-VIII-17; Paratype $, 23- 

 VIII-17; in Barnes Collection; Paratype $, 16-VIII-22; in Mackie Collection: 

 Paratype $ , 18 Aug. 1922, in Bowman Collection. 



Oncocnemis ibapahensis sp. nov. 



Primaries : ground color whitish, heavily dusted with black and appearing 

 pale grey; ordinary lines obsolete except the s. t. which is indicated by black 

 and white sagitate dashes and a narrow black terminal line broken by the veins ; 

 basal dash black, short; claviform elongate but not narrow, pale filled, sur- 

 rounded by a thin black line, a continuation of the basal dash faintly indicated 

 thru its center ; orbicular and reniform not prominent ; the former elongate, 

 grey filled, surrounded by white and black, making contact with reniform ; which 

 is indistinct, upright, short, broad, grey filled, faintly outlined by white; this 

 white forming a distinct spot on the caudal end of the reniform and is con- 

 tinued as streaks on veins 3, 4, nearly to s. t. line ; s. t. space somewhat less 

 powdered with black than the remainder of the wing and hence appearing paler ; 

 fringe marked by a basal white line, then alternate grey and white Hnes. Sec- 

 ondaries: basal two-thirds whitish, tinged with pale yellowish-brown, the veins 

 darker; discal spot faintly indicated, elongate; the outer third a black band; 

 fringe yellowish-white at base, a fuscous interline, and pure white tips. Be- 

 neath : all wings with pale bases and wide black outer bands ; primaries tinged 

 with yellowish, with scattered black scales along costal margin and distad of 

 the cell, with small black discal dots ; secondaries with the basal portions de- 

 cidedly yellow, a few scattered black scales along costal margins ; fringes as on 

 upper side. 



Expanse: $, 29 mm.; $, 30 mm. 



Closely allied to chandleri Grote (poliochroa Hamp.), smaller, 

 paler in color, lacking all brownish tints on the primaries, more uniform 

 in appearance ; veins 3, 4, more marked by white ; beneath lacking 

 the discal spot on the hind wing, both wings more strongly yellow 

 tinged. 



