EcxoA. 245 



brown lines through them. Hind wing whitish tinged with brown, 

 especially on marginal ai'eas ; the veins brown ; a discoidal point 

 and postmedial points on veins 5 to 2 ; a lunulate terminal line ; 

 cilia white, with a brown line through them; underside with 

 prominent })0stmedial streaks on veins 8 to 2. 



Hob. U.S.A., N'ebraska, Kansas, Colorado, 1 $ , Grote Coll., 

 Nevada. Exp. 38 millim. 



Egg. French, Can. Ent. xxvii. )d. 332 (1895). 



Diam. and height '03 inch ; blunt, conical, tapering abruptly to 

 base ; with about 60 longitudinal striae, of which about 30 reach 

 the micropyle, and with indistinct cross striae ; centre of micropyle 

 a rounded eminence ; colour grey or whitish, irregularly blotched 

 with red. 



Larva. Young ; length '07 inch ; cylindrical ; colour smoky- 

 white ; head black ; warts moderate, with a whitish hair from each. 



2nd stage : "15 inch ; pale greenish brown; head black; warts 

 small, black ; a small cervical shield. 



Food-plants : clover and radish in confinement. 



431 . Euxoa trux. 



Noctua trux, Hiibn. Samml. Eui-. Schmett., Noet. ff. 723, 725, 770 (1826) ; 



Boisd. Icon. Lep. Eur. pi. 79. f. 4 ; Stand. Oat. Lep. pal. p. 151. 

 Agrotis lenticulosa, Dup. Lep. Fr. vi. pi. 72. ff. 5, 6 (1826). 

 Agrotis terranea, Frr. Beitr. Eur. Schmett. 34. 1 (1827). 

 Agrotis lunigera, Steph. 111. Brit. Ent., Haust. ii. p. 113, pi. 20. f. 2 (1829). 

 Agrotis olivina, Staud. Cat. Lep. pal. p. 162 (1901). 

 Agrotis araasina, Staud. Cat. Lep. j^al. p. 152 (1901). 



Head and thorax ochreous, suffused with rufous to fuscous brown, 

 irrorated with grey ; palpi with dark band near extremity of 2nd 

 joint ; tibiae and tarsi with blackish bands ; abdomen pale, dorsally 

 tinged with fuscous brown, ventrally irrorated with brown. Fore 

 wing ochreous grey, strongly irrorated, striated, and largely suffused 

 with pale rufous or fuscous brown ; the subbasal line indistinct, 

 double, waved from costa to vein 1 ; a double, waved, antemedial 

 line angled outwards below costa and strongly above inner margin ; 

 claviform moderate, more or less strongly outlined with black, 

 sometimes filled in with black ; orbicular and reniform with brown 

 centres and pale annuli defined by brown or black, the former 

 rather small, round, the latter placed on the diffused medial shade ; 

 the postmedial line dentate and produced to minute white points on 

 the veins, slightly bent outwards below costa, excurved to. vein 4, 

 then incurved ; the subt^erminal line indistinct, pale, angled out- 

 wards at vein 7 and excurved at middle, defined by brown suffusion 

 or small dentate black marks on inner side ; a terminal series of 

 black points ; cilia pale rufous, with a fine brown line through them. 

 Hind wing white, the veins and terminal area fuscous brown ; the 

 underside with the costal area irrorated with brown ; a postmedial 

 series of striae on the veins. 



Ab. 1. olivina. Fore wing with a slight greenish or violaceous 

 tinge. 



