104 NOCTUIDJ5. 



terminal line white slightly defined on inner side by dark brown, 

 somewhat excurved below vein 7 and incurved below vein 3 ; 

 cilia with fine white lines at base and middle and white tips. 

 Hind wing greyish thickly irrorated and suffused with red-brown ; 

 cilia with fine white line at base and white tips ; the underside with 

 the costal area red-brown irrorated with white. 



Hab. U.S.A., Colorado, Glenwood Springs {Barnes), 1 c? , Denver. 

 Exp. 34 millim. 



Genus STIBADIUM. 



Type. 



Stibadmm, Grote, Bull. Buff. Soc. Nat. Sci. ii. p. 74 (1874) spumosa. 



Proboscis fully developed ; palpi porrect, extending to just beyond the frons, 

 the 2nd joint moderately fringed with hair below, the 3rd short; frons with 

 large round corneous prominence with raised edges and corneous plate below 

 it ; eyes large, round ; antennae of male laminate and almost simple ; thorax 

 clothed with rough scales, the pro- and metatliorax with spreading crests, the 

 patagia curled upwards at extremity ; tibia; moderately fringed with hair, the 

 lore tibia with large curved claw on inner side; abdomen without crests. 

 Fore wing with the apex produced and acute, the termen obliquely curved and 

 not 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 just below middle of 

 diseocellulars; 6, 7 shortly stalked ; 8 anastomosing with the cell near base 

 only. 



A. Fore wing with antemedial white patch below the cell and 



crescentic spot at lower angle of cell olvcllo. 



B. Fore wing without antemedial wbite patch below the cell or 



crescentic spot at lower angle of cell. 

 a. Fore wing with dark patch ou costal area beyond post- 

 medial line. 



a 1 . Fore wing with the orbicular filled in with black to'ncinna. 



b l . Fore wing with the orbicular not filled in with black. 

 a 2 . Fore wing rufous irrorated with dark brown, the veins 



with dark streaks laodamia. 



b 2 . Fore wing grey irrorated with white, the medial area 



suffused with blackish curiosa. 



6. Fore wing without dark patch on costal area beyond post- 

 medial line. 

 a x . Fore wing with the postmedial line angled outwards at 

 vein 6. 

 a 2 . Fore wing with the antemedial line angled outwards 

 in submediau fold. 

 ft 3 . Fore wing with the orbicular and reniform present, ochoa. 

 b^. Fore wing with the orbicular and reniform absent, aureola. 

 b 2 . Fore wing with the antemedial line nearly straight. 

 a 3 . Fore wing with the postmedial line obliquely 

 incurved below vein 5. 

 a 4 . Fore wing with the postmedial line fine, whitish. 

 a B . Hind wing white, the terminal area suffused 



with brown spumosa. 



b 5 . Hind wing wholly suffused with brown manti. 



b*. Fore wing with the postmedial line diffused 



whitish corazona. 



b 3 . Fore wing with the postmedial line incurved below 



vein 4 jalada. 



b l . Fore wing with the postmedial line excurved from 



below cosla to vein 4, then incurved navia. 



