POLTA. 67 



marks and by a dark patch on eosta, angled outwards at vein 7 and 

 exciirved at middle, the area beyond it somewhat darker ; a terminal 

 series of black points ; cilia chequered brown and grey. Hind wing 

 fuscous brown ; cilia pale at tips ; the ui'derside grey irrorated 

 with brown, an indistinct discoidal point and sinuous postmedial 

 line. 



Bah. Canada, Calgary {Wolley-Dod), 3 c? . Eay. 32 millim. 



Sect. IV. Auteimie of male serrate and fasciculate. 



A. Protlioras with divided crest. 



«. Fore wing grey-white irrorated witli fuscous discalis. 



h. Fore wing more or less strongly tinged with brown. 

 «.'. Fore wing whitish suifused and irrorated with 



brown imhrijera. 



h^. Fore wing purplish-grey suffused and irrorated with 

 browu. 

 a^. Hind wing white, the veins tinged with brown, 

 a''. Fore wing witb the reniforui angled inwards on 



median nervure v lu/aHtf. 



IP. Fore wing with the reniforni not angled in- 

 wards on median nervure lavguida. 



1-. Hind wing entirely tinged with brown. 



a^. Fore wing with the reniform angled inwards on 



med ian nervure Jnnci macula. 



h^. Fore wing with the reniiorm not angled in- 

 wards on median uei-vure ptirpurissata. 



(^ , Fore wing grey-bro wu crotchi. 



1218. Polia discalis. (Plate LXXX. fig. 7.) 



Mamesfra discalis, Grote, U.S. Bull. Geol. & Geog. Surv. Terr. iii. p. 707 

 (1877) ; Smith, Cat. Noct. N. Am. p. 114. 



Bluish white ; head, thorax, and abdomen with black mixed ; 

 tegulae with blackish medial line ; patagia tipped with blackish. 

 Fore wing thickly irrorated with black ; a double dentate subbasal 

 line from costa to vein 1 ; an antemedial line defined by white on 

 inner side and angled inwards on median nervure and vein 1 ; 

 elaviform small, defined by black or absent ; orbicular and reni- 

 form large, defined by blackish and with blackish suffusion between 

 them, the former round or elliptical, the latter constricted at middle 

 and extending to below cell ; postmedial line indistinct, minutely 

 dentate, bent outwards below costa and incurved below vein 3 ; 

 subtcrrainal line represented by a series of whitish lunules with 

 small dentate dark marks before them, angled outwards at vein 7 

 and excurved at middle; a terminal series of small black lunules. 

 Hind wing white, slightly irrorated with fuscous especially towards 

 tcrmen ; the veins brownish ; a fine dark terminal line ; the under- 

 side with postmedial series of points on the veins. 



Bab. Canada, Alberta, Calgary ( iVoUt'i/-Dod), 1 5 , Br. Columbia, 

 Sicamon's Junction (Mias Micardo), 2 $ ; U.S.A., Colorado, Clear 

 Creak Canon, 1 $ type, (J?n<cf) 1 $ , Grand Junction (Oslar), 3 J, 



1-2 



