CBA. — ARBNOSTOLA. 281 



and below vein 4 aud below estremifcy of vein 'A. Hind win<,' 

 white faintly tinged with ochreous ; the underside with the costal 

 area faintly tinged with rufous. 



Hah. U.S.A., Oregon, Crooked R. {WalsUhjham), 1 J , 5 $ type. 

 Ewp. 34-40 millim. 



*4679. Cea immacula. (Plate CXLIII. fig. 14.) 



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

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



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

 almost uniform very j)ale yellow. Hind w'ing pure silky white. 



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

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

 See. Arts and Sciences. 



Genus ARENOSTOLA, nov. 



Typo, A. phragmitidis. 



Proboscis fully developed ; palpi upttn-ned, the 2nd joint reaching to vertex of 

 bead and moderately fringed with hair in front, the iird short, pnrrect ; frons 

 smooth, vpith tuft of hair ; eyes large, round ; antenna- of male ciliated : thorax 

 clothed with hair aud hair-like scales, the protliorax with slight spreading crest, 

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

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

 terinen 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. 



Sect. I. Antennae of male with fascicles of long cilia, 



4680. Arenostola lutosa. 



Nodna hfosa, Hiibn. Eur. Schmett., N(jct. f. 232 (]S02); Grube, Tijds. v. 



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



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

 Noctua crassiconiis, Haw. Lep. Brit. p. 173 (1809) ; Stepb. III. Brit. Ent., 



Haust. iii. p. 72. 

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

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



(1829). 

 Novagria hathym-ga, Frr. Keue Schmett. ii. p. 122, pi. 170. f. 1 (1835) ; 



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



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



Head and thorax ochreous -whitish ; abdomen ochreous whitislj 

 dorsally faintly tinged with rufous. Fore wing ochreous whitisli 

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

 points excurvcd from costa to vein 4, then oldique. Hind wing 

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

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



