1 1 2 NOCIUIDJE. 



4091. Acopa perpallida. (Plate CXXXII. fig. 30.) 



Acopa perpallida, Grote, C.n. Ent. x. p. GS (1878); Siuitl), Cat. Noct, 

 In. Am. p. 2G4. 



3 . Head and thorax white faintly tinged in parts with ochreous 

 brown and irrorated with some dark brown ; legs tinged with 

 ochreous brown ; abdomen white dorsally tinged with ochreous 

 brown. Fore wing white, the basal inner area and the medial 

 area below the cell tinged with brownish ochreous, the veins slightly 

 streaked with brown ; subbasal line indistinct, yellow-brown, 

 strongly angled outwards below cell and ending at vein 1 ; ante- 

 medial line yellow-brown, strongly angled outwards in cell, 

 submedian fold, and above inner margin and inwards on median 

 nervure and vein 1 ; elaviform and orbicular absent ; reniform 

 rather indistinctly defined by brown and with some brown in 

 centre ; postmedial line brown, minutely waved, oblique from costa 

 to above vein 5, then inwardly oblique, an oblique dark shade from 

 costa beyond it meeting it at vein (j ; a diffused oblique subterminal 

 brown band except towards costa ; a terminal series of brown stria; ; 

 cilia white with a few brown scales at base and faint line near 

 base. Hind wing white slightly irrorated with brown, a slight 

 brown terminal line. Underside of fore wing mostly suffused with 

 brown ; hind wing with small brown discoidal lunulc and traces of 

 diffused postmedial bar from costa to vein 0. 



11 ah. U.S.A., Kansas (Snow), 2 3 type. Exp. 32 millim. 



Genus ACOSMETIA. 



Type. 



Acosmefia, Stepb. 111. Brit. Ent., Haust. iii. p. 121 (1829) caliginosa. 



Hydrilla, Boi^d. Gen. et Lid. Meth. p. 138 (1840) caliginosa. 



Proboscis fully developed ; palpi uptured, tlie 2nd joint reaching about to 

 middleof fronsaud moderately scaled, the3rd moderate ; irons with small rounded 

 prominence; eyes large, round; antennas of male ciliated ; thorax clothed 

 with hair and scales mixed and without crests; build slender; tibias slightly 

 fringed with hair ; abdomen without crests. Fore wing typically short and 

 broad, the apex rounded, the terinen evenly curved and not crenulate; veins 3 

 and 5 from near angle of cell; G 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 discocellulars ; G, 7 from 

 upper angle ; S anastomosing with the cell near base only. 



A. Fore wing with the lines double tenuipennis. 



I!. Fore wing with the lines tingle. 



«. Hind wing grey tinged with red-brown caliginosa. 



b. Hind wing pure white arida. 



4002. Acosmstia tenuipennis, n. sp. (Plate CXXX1II. fig. 1.) 



<S . Head, thorax, and abdomen purplish grey mixed with reddish 

 brown. Fore wing rather narrow, purplish grey suffused and 

 in-orated with reddish brown ; antemedial line indistinctly double 

 filled in with grey, slightly angled outwards on subcostal and 



