108 WM. G. DIETZ, M.D, 



Abdomen: above dark fuscous, segments 1-2 witli brassy lustre. Under side: 

 thorax and femora silvery, abdomen fuscous, last '.i segments clothed with fulvous 

 scales; legs brownish fuscous, spotted with paler scales; tarsal joints with a pale 

 annulus at the apex. Fore wings fuscous, with a rufo-SEiieous lustre in certain 

 lights. 



E.xpanse 11.-12. mm., .44-.48 inch. 



Hab. — Hazleton, Pa. 



Only females before me. A striking species, distinguished from 

 the preceding species by its more elongate fore wings, with the costa 

 almost retuse from the base, from the following by its pronounced 

 coloration. 



I». angiisfipeiiiiella sp. n. Male.— Greyish fuscous. Thorax seueo-fus- 

 cous. head and antennal eye-caps tawny, ochreous, shining; antenna; dark grey- 

 ish fuscous. Labial palpi minute, pale yellow, a pencil of short, stifi", blackish 

 bristles arises from the base of the first Joint posteriorly. Fore wings elongate, 

 costa depres.sed from the base ; ground color silvery grey, overlaid with fuscous; 

 basal space with a feeble brassy lustre, limited at two-fifths the wing length by a 

 curved, pale fascia, shading off gradually towards the base into fuscous; the cos- 

 tal end of fascia nearer the base than the dorsal extremity; immediately beyond 

 the fascia the wing is inore deeply fuscous in illdefined patches, more marked an 

 the dorsal margin, extreme costa and 2 dots at end of cell, dark fuscous, between 

 the latter and both margins are several smaller illdefined spots, and forming thus 

 an illdefined, transverse line or band, preceding this is a paler area; apical part 

 of wing more deeply fuscous, and with the adjoining cilia sprinkled with white 

 scales. Cilia dark grey. Hind wings greyish fuscous towards the apex, cilia con- 

 colorous. Abdomen fuscous above, segments 12 feebly aeneous, shining. Under 

 side: thorax, abdomen and femora silvery, abdomen dusted with fuscous; legs 

 fuscous, middle and hind pair silvery grey within ; apices of tarsal joints paler; 

 wings fuscous, anterior with a feeble seneous lustre. 



Female.— Head, thorax and eye-caps seneo-fuscons, shining. Labial palpi dark 

 fuscous, second joint at extreme apex within, paler, distinctly longer than the 

 terminal joint. 



Expanse 11. mm., .44 inch. 



Hab. — Hazleton, Pa. 



Not rare at electric light, June, July. Resembles in form and 

 habitus the preceding species, but is paler, metallic tints, le.ss pro- 

 nounce, transverse fascia of fore wings curved and a little further 

 removed from the base. Altogether a more sombre and obscure 

 looking insect. 



F. tristella s]). n. — Pale brownish fuscous. Thorax, head and eye-caps 

 tawny, feneous, feeble lustre. Labial palpi ( ?) ratlier short, ochreous, somewhat 

 dusky at the apex, third joint shorter than the second. Fore wings elongate, 

 costa depressed from near the base; ground color a silvery grey, evenly overlaid 

 with brownish, fuscous scales, these latter are paler at their bases, giving thus 

 the surface a finely irn.rated appearance ; a pale, straight fascia at two-fifths the 



