46 PROCEEDINGS OF THE NATIONAL MUSEUM vol.73 



RIFARGIA POSSIDA, new species 



Male. — Palpi: First and second joints fuscous fringed with white; 

 third joint white with a brown spot. Frons white; vertex mottled 

 benzo brown and white. Collar benzo brown with some v/hite hairs, 

 laterally white. Thorax white with a few black hairs, the tegulae in 

 front dorsally mottled with benzo brown. Abdomen above white 

 suffused with drab, the anal hairs mottled with drab hairs; underneath 

 white. Fore wing from base to discocellular and tornus white with a 

 few scattered black scales; a subbasal and a double antemedial lunular 

 line, formed by thin black scaling, and between the lines on costa to 

 within cell a quadrate brownish drab spot irrorated with white and 

 edged with fuscous black; a fuscous medial line on costa joining the 

 black line on discocellular, the latter outwardly upcurved to vein 8, 

 and downbent to vein 5 at postmedial; outer space beyond discocel- 

 lular brownish drab, irrorated with white on termen, more broadly 

 below vein 4; postmedial line double, lunular, fuscous, above vein 6 

 diverging; a marginal lunular fuscous line; cilia white mottled with 

 drab gray; and with dark spots at veins. Hind wing white; a small 

 dark spot at anal angle. 



Expanse 39 mm. 



Habitat. — Porto Velho, Amazons. 



Type.— Cat. No. 33368, U.S.N.M. 



RIFARGIA EVERITI, new species 



Male. — Palpi drab with a chestnut brown line above and a thick 

 black lateral line. Head and collar fuscous black; tegulae sayal 

 brown; thorax mottled avellaneous, light drab, and buffy brown. 

 Abdomen above hair brow n basally suffused with orange cinnamon in 

 the female; underneath tilleul buff. Fore wing whitish irrorated with 

 bufiFy brown and ochraceous tawny, less so on anterior third of wing; 

 an irregular black patch at base of costa entering cell; a double ante- 

 medial vertical black hne connected with basal patch by a black line 

 below cell, and preceded in cell by a whitish space; reniform vertical, 

 narrow, somewhat oval and whitish defined by a fine fuscous line 

 edged narrowly with whitish; postmedial line thick, black, very out- 

 bent to vein 8, then fine, vertical, somewhat sinuous to vein 3, 

 incurved to vein 2 in a line with discocellular and outbent to inner 

 margin, followed from below vein 4 to termen and tornus by a dark 

 vinaceous brown shade; from postmedial below vein 8 a thick black 

 streak upbent to costa at marginal line; marginal line black, almost 

 straight to vein 3, then lunular to tornus. Hind wing fuscous; a 

 faint postmedial sinuous line, downbent near inner margin to anal 

 angle where it is well defined in black and white. 



Expanse, male, 65 mm.; female, 80 mm. 



Habitat. — French Guiana. 



