AGROTIS. 



367 



h^. Fore wing with slight bhick streaks from outer edge 



of reuiform iocionis. 



c^. Fore wing without black marks i'rom outer edge of 

 reniform. 

 or. Fore wing with the cell black between orbicular and 



reniform geniculata. 



b'. Fore wing with the cell not black between orbicular 

 reniform. 

 a^. Fore wing fuscous suffused with purplish grey ... plana. 



h^. Fore wing firey sufl'u^ed with purplisli red subcorticca, 



b. Tegulce without medial black line. 



a}. Fore wing with the ground-colour grey. 

 «^. Fore wing with the lines entire. 



a^. Fore wing with the postmedial line dentate a'ssic/ma. 



h^. Fore wing with the postmedial Hue not dentate... violaris. 

 b'^. Fore wing with the hues reduced to points on the 



veins dr/jjsil/s. 



6'. Fore wing with the ground-colour pale ochreous aurulcnta, 



644. Agrotis opacifrons. (Plate LXVIII. fig. 26.) 



Agrotis opacifrons, Grote, Bull. Geol. Surv. iv. p. 170 (1878) ; Smith, Cat. 

 Noct. N. Am. p. (il. 



Head and thorax red-brown, the scales tipped with grey ; froiis 

 deep black ; tibiae and tarsi blackish, the latter with pale rings ; 

 abdomen grey-brown, the anal tuft tinged with fulvous. Fore 

 wang grey, tinged with purplish brown and irrorated Avith black ; 

 a subbasal black striga from costa and poiiit below the cell; an. 

 antemedial striga from costa and points in and below cell, then with 

 traces of a waved line ; orbicular defined by black and open above, 

 either narrow U-shaped or semicircular ; reniform with its centre 

 and circumference slightly defined by fuscous ; a black streak above 

 median nervure from the antemedial line to the reniform ; post- 

 medial line rather indistinct, strongly bent outwards below costa, 

 then strongly dentate and incurved between veins 3 and 1 ; traces 

 of an irregularly waved subterrainal line ; some black points on 

 termen. Hind wing pale, strongly irrorated and sufi'used with 

 fuscous, especially on terminal area ; cilia whitish ; the underside 

 with discoidal lunule and curved postmedial line. 



Hah. U.S.A., New York, 1 J, 1 ?, type. Exji. 42 millim. 



645. Agrotis spina. (Plate LXVIII. fig. 27.) 



Agrotis spina, Guen. Noct. i. p. 269 (1852). 



Mamestra nitida, Wlk. xxxii. (i(iS (186.')). 



Mamedra tenehrosa, Wlk. xxxii. (\&d (ISC);")). 



Agruiis vast a/or, Scott, Trans. Ent. Soc. JN'.S.W. ii. p. 40 (1869). 



cJ . Head and thorax reddish brown mixed with white ; tegulrc 

 fuscous in front and with black medial line; pectus and legs largelv 

 mixed with white ; abdomen grey-brown, the ventral surface 

 strongly irrorat(;d with white. Pore wing grey-biown, irrorated 

 with fuscous and sufi'used witli rufbtis towards costa ; a double, 

 waved, subbasal line f'n)m costa to submcdial fold; a double, waved, 

 antemedial line more strongly angled outwards above inner maigin ; 



