genera Acrolophus and Anaphora. 100 



Oktholophus, n. g. 



(Offlof = straight, *.o(po$= crest). 



Type. Ortholophus variabilis, Wlsm. 



Labial palpi, $ , erect, not recurved over the head, the joints 

 thickly clothed; % porrected. Maxillary palpi short, depressed. 

 Antenna, simple, or slightly serrated. Ocelli none. Fore wings 

 elongate, narrower in proportion to their length than in Anaphora 

 or Acrolophus; nenration as in Acrolophus; apical vein of the 

 fore wing not forked ; uncus single or double. 



Ortholophus variabilis, n. s. (PL VIII., tigs. 24, 24</, 

 24 6, 24 c). 



Labial palpi, 3 > erect, not recurved, dirty whitish, more or less 

 tinged with greyish fuscous, with which they are sometimes 

 entirely suffused, about oh mm. long, separately tufted on each 

 joint; J porrect, standing out about 2 mm. beyond the head. 

 Antenna subochreous ; 3 serrated; $ simple. Head, thorax, and 

 fore luings dirty whitish, sprinkled and suffused with greyish 

 fuscous, varying with the colour of the fore wings. Fore wings 

 elongate, narrow, the costa slightly rounded, apex rounded, apical 

 margin oblique, convex, presenting several varieties of colouring ; 

 apical vein not forked. Var. a. dirty whitish, mottled along the 

 apical and costal margins with greyish fuscous ; a triangular 

 fuscous patch overlapping the fold, and more or less connected with 

 a spot of the same colour at the end of the cell ; fringes mottled 

 alternately greyish fuscous and dirty white both in fore and hind 

 wings. Var. j3. greyish fuscous, with scarcely any admixture of 

 whitish scales, the darker fuscous patches distinctly visible, and a 

 few brownish ochrcous scales on the disc. Var. y. pale greyish 

 fuscous, the dark patches almost obsolete, with no admixture of 

 whitish scales, except in the fringes. Hind wings in all the 

 varieties brownish, with a slight purplish tinge ; the fringes 

 scarcely paler. Abdomen pale greyish fuscous ; lateral claspers of 

 nearly even width from the base outwards, slightly angulated 

 downwards about their middle, the ends rounded, but more so 

 below than above ; uncus single, evenly bent over, but very little 

 longer than its opposing branch coming from beneath it. Exp. at. 

 3 , 24—27 mm. ; ? , 80—34 mm. 



I have a considerable series of this species collected 

 by Morrison in Arizona, and had always regarded it as 

 equivalent to mortipennella, Gr., the only described 

 species with whitish fore wings and darker hind wings ; 



