NO. 2132. REVISION OF THE SUBFAMILY HYPENINAE—SCIIAUS. 289 

 MASTIGOPHORUS AUGUSTUS, new species. 



Hale. — Palpi, head, thorax, and forewings dark purplish brown; 

 abdomen fuscous brown. Fore wings: Lines fine, fuscous brovm; 

 antemedial thicker on costa, outbont to orbicular, inset on median 

 and outcurved; orbicular round, black, containing a briglit brown 

 point; a broad fuscous brown medial shade from cell to inner margin; 

 reniform black, cut ])y an angled bright brown line; postmedial out- 

 bent, angled at vein 4, incurved, lunular dentate, outwardly pale 

 edged; sub terminal buff, finely dark edged, oblique from costa to 

 termen at vein 4; some narrow terminal fuscous brown shading 

 followed by a buff' line; a small tuft on inner margin near base. 

 Hind wdngs whitish at base irrorated with brown, shading to fuscous 

 brown on termen; an outer dark line, wavy, outbent to near termen 

 on vein 3, forming a lunule to vein 2, and inbent to inner margin; 

 the termen below vein 3 slightly incurved, truncated. 



Expanse. — 18 mm. 



Habitat. — Cayenne, French Guiana. 



Type.— Cat. No. 19723, U.S.N.M. 



The female has the inner dark shading of subterminal extended to 

 inner margin from termen at vein 4; the hind wings are normal, 

 more evenly brown, with darker postmedial and subterminal lines, 



MASTIGOPHORUS NOMIUS, new species. 



Male. — Palpi bistre brown; head and thorax slightly darker. 

 Abdomen fuscous brown, paler shaded at base. Fore wmgs bistro 

 brown; base limited by an outcurved dark brown antemedial line; 

 space to postmedial fuscous gray shaded with dark brown below cell, 

 between antemedial and a still darker medial brovai line, obsolescent 

 above median; a pale brown hne on discocellular, darker edged; post- 

 medial obhquely outcurved, angled at vein 4, wavily inbent, out- 

 wardly pale edged; space to subterminal grayish; subterminal yellow 

 buff, straight, oblique to termen below vein 4, then incurved to inner 

 margin near tornus; a fuscous terminal Ime, macular toward apex. 

 Median, also veins 3 and 4 buff. Hind wings grayish brown, darker 

 shaded on inner marghi, a faint darker postmedial hne, outwardly 

 pale edged; subterminal yeUow buff, outwardly dark shaded; the outer 

 margin deeply mcurved between vein 2 and anal angle. 



Expanse. — 18 mm. 



Habitat. — Cayemie, French Guiana. 



Type.— Cat. No. 19724, U.S.N.M. 



The female is similar to the male, but the outer margin of hmd 

 wing is normal. 



10600°— Proc.N.M.vol.50— 16 19 



