EuxoA. 245 



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

 especially on marginal areas ; 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 postmedial streaks on veins 8 to 2. 



Hah. U.S.A., Nebraska, Kansas, Colorado, 1. $ , Grote Coll., 

 Nevada. Exp. 38 millim. 



Egg. French, Can. Ent. xxvii. p. 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. Samrnl. Ear. Schmett., Noct. ff. 723, 725, 770 (1826) ; 



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

 Agrotis lentieulosa, Dnp. Lep. Fr. vi. pi. 72. W. 5, 6 (1826). 

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

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

 Agrotis olivina, Stand. Cat. Lep. pal. p. 152 (1901). 

 Agrotis amasina. Stand. Cat. Lep. pal. p. 152 (19Ul). 



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

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

 joint ; tibiae and tarsj 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, Avaved, 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 subterminal 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. 



