POLIA. 67 



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

 excurved 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 underside grey irrorated 

 Avith brown, an indistinct discoidal point and sinuous postmedial 

 line. 



11 ah. Canada, Calgary {WoUey-Dod), 3 S . Eaj). 32 millim. 



Sect. IV. Antennae of male serrate and fasciculate. 



A. Prothorax with cliyidecl crest. 



a. Fore wiog grey-white irrorated with fuscous discalis. 



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

 a}. Fore wing whitish suffused and irrorated with 



brown imbrijera. 



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

 brown, 

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

 ft-*. Fore wing with the reniforui angled inwards on 



median nervure migatis. 



b^. Fore wing with the reniform not angled in- 

 wards on median nervui e lavguida. 



b-. Hind wing entirely tinged with brown. 



a^. Fore wing with the reniform angled inwards on 



med ian nervure juncimacula. 



b^. Fore wing wilh the renil'orui not angled in- 

 wards on median nervure imr-jmrhsaia. 



c^. Fore wing grey-brown crotchi. 



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



Mamestra discalis, Grote, U.S. Bull. Geol. & Geog. Surv. Terr, iii p 797 

 (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. 

 Pore 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 ; 

 claviform 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 ; 

 subterminal line represented by a series of whitish luuules 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. 



Hub. Canada, Alberta, C&lQ&ry (^Wolley-Dod),! $ , Br. Columbia, 

 Sicamon's Junction (3Iiss Hicardo), 2 2 ', U.S.A., Colorado, Clear 

 Creak Canon, 1 $ type. {Bmce) 1 $ , Grand Junction (Oslar), 3 J , 



f2 



