En^OGNATHA. 373 



costa, oblique and dentate below vein 5, bent inwards at 

 vein 1 and ending afc middle of inner margin, two black-brown spots 

 bej'ond it on costa and two streaks below costa ; sub terminal line 

 white faintly defined on each side by brown, waved, bent outwards 

 at vein 7 and inwards at vein 2, then oblique to tornus, a terminal 

 series of black-brown striae. Hind wing pale grey-brown, the cilia 

 white ; the underside brownish white. 



Hub. Costa Rica, Juan Vinas (Schaus), 1 c? , 1 $ • Ex^). 48-54: 

 millim. Type fin U.S. Nat. Mus. 



*6693. ElaBOgnatha nitescens. (Plate CLXXXIV. fig. 7.) 



Alcsognatha nitescens, Dnice, A. M. N. H. (8) vi, p. 179 (1910). 



Head and thorax dark brown mixed with white ; palpi with the 

 2nd joint black at sides ; tegulse with black tips ; abdomen white 

 dorsally tinged with brown, the basal crest blackish. Pore wing 

 silvery grey irrorated with red-brown, the basal area white ; ante- 

 medial line indistinct, brown, waved ; tut'ts of raised brown scales 

 on white spots at middle of cell and on discocellulars ; postmedial 

 line brown defined on outer side by whitish except towards inner 

 margin, bent outwards and almost obsolete below costa, dentate and 

 very oblique below vein 4 to inner margin before middle, some 

 short blackish streaks beyond it on costa and two streaks below 

 costa ; subterminal line whitish defined on outer side by brown, 

 dentate, angled inwards at discal fold and bent inwards below 

 vein 3, the veins beyond it streaked Avith black towards apex ; a 

 terminal series of small black spots. Hind wing semihyaline white, 

 the veins and terminal area to vein 3 tinged with brown especially 

 in female. 



Hah. S.E. Peru, S. Domingo (OGJx:enden), Oconeque {Oclcenden), 

 1 $ . Exy. 40-44 millim. Type fin Coll. Druce. 



Sect. IV. Wings of male normal. 



A. Fore wing with the ground-colour silvery white argyritis. 



B. Fore wing sulfused with brown, 



a. Hind wing whitish tinged with brown, 



(i^. Fore wing with patch of metallic green at base of 



inner margin purpurascens. 



V-. Fore wing without metallic green patch at base of 



inner margin melanosticta. 



b. Hind wing deep chocolate-brown cacaonis. 



6694. Elseo^natha argyritis. (Plate CLXXXIV. fig. 8.) 



Elceognatha argyritis, Hmpsn. A. M. N. H. (7) xvi, p. 577 (1905). 



5 . Head and thorax silvery white ; palpi with the 2nd joint 

 dark brown at sides ; tips of tegula3 and patagia dark brown ; fore 

 tibiiB and tarsi banded with fuscous ; abdomen white dorsally 



