58 PROCEEDINGS OP THE NATIONAL MUSEUM. vol. 65. 



the base and anal hairs light cinnamon drab; a black dorsal tuft at 

 base; underneath pale pinkish buff with a line dark ventral line. 

 Fore wing : base to antemedial line mostly fuscous with some cinna- 

 mon buff scaling along fold and inner margin, the space between 

 silvery gray with darker irrorations; antemedial line black, outbent 

 on costa^ inangled to near base below subcostal; medial line outbent 

 on costa, then nearly vertical to below cell where it bifurcates, the 

 inner branch wavy and incurved on submedian, the outer branch 

 wavy and outcurved on submedian, both vertical and parallel below 

 submedian ; some whitish scaling in end of cell ; a velvety black 

 brown line on discocellular followed by a broad fuscous shade from 

 vein 6 to vein 2 ; postmedial line double, fine, black, outbent and close 

 together on costa, then rather widely apart, the inner line suffusing 

 w^ith the fuscous shade beyond cell, the outer line deeply dentate, 

 the space between partly light quaker drab, the angles on outer side 

 filled in with light ochraceous buff; costa from above discocellular 

 to apex pale grayish; terminal area mostly russet, the veins mottled 

 quaker drab and whitish ; fine black lines on interspaces, faintly bi- 

 furcating before termen enclosing small terminal black points; a 

 velvety brown black streak subterminally at vein 8; a small sub- 

 terminal quadrate white spot between veins 2 and 3; the postmedial 

 area above inner margin whitish; cilia white on interspaces. Hind 

 wing whitish with hair brown scaling, the margins broadly suffused 

 with hair brown. Fore wing below fuscous with faint whitish spots 

 on termen. Hind wing below whitish. 



Expanse.^ — 34 mm. 



Habitat. — Rurrenabaque, Bolivia. 



Typ€.—C2^t. No. 26067, U.S.N.M. 



Collected by Dr. William M. Mann during the Mulford Biological 

 Expedition. 



RIFARGIA CINGA, new species. 



Female. — Palpi cartridge buff streaked above with black. Head 

 mottled light buff and white. Collar and thorax cinnamon ; patagia 

 gray white, the dorsal edge mottled with black and cinnamon. Ab- 

 domen whitish gray, with dark irrorations, overlaid except on two 

 last segments with dull brownish and light cinnamon hairs, under- 

 neath whitish. Legs mostly clothed with buff white hairs, the tarsi 

 dark brown with white rings. Fore wing mostly silvery white with 

 grayish irrorations ; a fine black line from base of costa, outbent and 

 irregular to inner margin followed by a small black spot below cell ; 

 antemedial line black, double, oblique on costa, outset on subcostal 

 and outcurved to vein 1 where it is slightly inangled, a short double 

 line above it on costa; a broad oblique buffy brown shade from costa 

 across antemedial line to postmedial from vein 3 to inner margin; 



