502 - PROCEEDIXGS OF THE NATIONAL MUSEUM. vol. xxx. 



Genus NIPTERIA Guenee. 

 NIPTERIA DEFORMIS, new species. 



Foreining. — Dirty whitish, .semitnin.sparent; the veins dull gra}'; the 

 whole apical area dull smoky gray, thinning- out to anal angle; inner 

 line ver}^ indi.stinct, from one-third of co.sta to be3'ond middle of inner 

 marg'in, only plain on eosta and inner nuirgin; a gray linear cell spot 

 on upper half of discocellular; outer line thick, dark gray, outcurved 

 from two-thirds of costa, and there much broader, to three-fourths of 

 inner margin; fringe dull gray. 



lUndiring. — Dirty whitish, with a few gra}^ striations toward hind 

 margin. 



Under side of forewings dull whitish, with the outer markings pres- 

 ent but faint; hindwing covered with gray stritv, with ill-detined broad 

 central and submarginal bands dull gra}^; the veins dark. 



Head, thorax, and abdomen dirty gray, like casta of forewing; lower 

 part of face, base of palpi, pectus, and abdomen beneath whitish; ter- 

 minal segment of palpi and antennae black; legs externally fuscous. 



ExjHinse of v'nujx.- — 42 mm. 



Locality. — Chanchamayo, Peru; 1 male. 



Type.— C2it. No. 9348,'^U.S.N.M. 



NIPTERIA MARGINATA, new species. 



Forewing . — Subtransparent, pale gray, with a few scattered black 

 scales; the costal area al)ove subcostal vein and more broadly beyond 

 middle thickly black and white speckled; costal edge black; a slight 

 dark cell mark at summit of discocellular; fringe dull blackish, paler 

 below middle. 



Illndtrliig. — Wholly gray; fringe, dark gra>'. 



Under side of hindwing and costal and hind margin of forewing 

 thickly black speckled; both cell spots black; in hindwing a sub- 

 marginal black shade with the ends of veins black; in forewing a 

 blacker subapical shade from costa to hind margin, leaving apex paler. 



Thorax and abdomen dark gray; head and vertex black. 



FfjMi/ise of wing><. — 40 mm. 



Locality. — Salta, Argentina; 1 male. 



Hind margin of forewing slightly bent at vein 4; of hindwing more 

 visibl}', as the margin is slightl}- indented before anal angle. 



Nearest of N. pe^'imede Druce and X. excavata Warren; distin- 

 guished bv the unmottled fringe. 



%>6.— Cat. No. 9349, U.S.N.M. 



NIPTERIA SABULOSA, new species. 



Foreioing. — Hyaline cream-color, covered with pale olive-gray atoms 

 partiall}' confluent, those along costa and hind margin pale brownish; 



