CEA. — ARKXOSTOLA. 281 



and below vein 4 and below extremity of rein 3. Hind wing 

 white faintly tinged with ochreous ; the underside with the costal 

 area faintly tinged with rufous. 



Hah. U.S.A., Oregon, Crooked R. ( Walsingham), 1 J , 5 $ type. 

 Exp. 34-40 millim. 



•4679. Cea immacula. (Plate CXL1II. fig. 14.) 



Cea immacula, Grote. Papilio, iii. p. 78 (1883). 

 Cea iiJtmaculata, Smith, Cat. Noct. N. Am. p. 214. 



Head and thorax very pale yellow ; abdomen white. Fore wing 

 almost uniform very pale yellow. Hind wing pure silky white. 



Hah. U.S.A., Arizona. Exp. 27 millim. This species is un- 

 known to me ; figured from a drawing from type in Mus. Brooklyn 

 Soc. Arts and Sciences. 



Genus AEEN0ST0LA, nor. 



Type, A. phragmitidis. 



Proboscis fully developed ; palpi upturned, the 2nd joint reaching to vertex of 

 head and moderately fringed with hair in front, the 3rd short, porrect ; frons 

 smooth, with tuft of hair ; eyes large, round ; antenna' of male ciliated ; thorax 

 clothed with hair and hair-like scales, the prothorax with slight spreading crest, 

 the metathorax without crest ; tibiae moderately fringed with hair ; abdomen 

 without crests. Fore wing with the apex somewhat produced and acute, the 

 termen evenly curved and hardly crenulate ; veins 3 and 5 from near angle of 

 cell ; 6 from upper angle ; 9 from 10 anastomosing with 8 to form the areole ; 

 11 from cell. Hind wing with veins 3, 4 from angle of cell ; 5 obsolescent from 

 middle of discocellulars ; 6, 7 from upper angle; 8 anastomosing with the cell 

 near base only. 



StCT. I. Antennae of male with fascicles of long cilia. 



4680. Arenostola lutosa. 



Noctua lutosa, Hiibn. Eur. Schmett., Noct. f. 232 (1S02); Grube, Tijds. v. 



Ent. xviii. p. 118, pi. 7. ff. a-e ; Tijds. v. Ent. xli. p. 93, pi. 2. ff. 1-3 ; 



Staud. Cat. Lep. pal. p. 190. 

 Noctua crassicornis, Haw. Lep. Brit. p. 173 (1809) ; Steph. 111. Brit. Eut., 



Haust. iii. p. 72. 

 Nonagria vectis, Curt. Brit. Ent. pi. 459 (1825). 

 Nonagria pilicomis, Steph. 111. Brit. Ent., Haust. iii. p. 72, pi. 29. f. 1 



(1829). 

 Nonagria bathyerga, Frr. Neue Schmett. ii. p. 122, pi. 170. f. 1 (1835) ; 



Dup. Lep. Fr., Suppl. iii. p. 343, pi. 32. f. 1 ; Herr.-Schiiff. Eur. 



Schmett., Noct. ff. 307, 312-3. 



Head and thorax ochreous whitish ; abdomen ochreous whitish 

 dorsally faintly tinged with rufous. Uore wing ochreous whitish 

 irrorated with a few black scales ; a postmedial series of black 

 points excurved from costa to vein 4, then oblique. Hind wing 

 white tinged with ochreous and irrorated with a few fuscous scales ; 

 traces of a curved fuscous postmedial line; the underside with the 



