AMERICAN LEPIDOPTERA. 147 



oa either side with Mack and lihicine. Secondaries brown ; the hase and inner 

 martrin yellow. Expanse 56 mm. 



Habitat. — Omai, British Guiana. 



Rifargia picta. — %. Palpi and head buif. Collar violaceous brown. 

 Thorax grey. x\bdoiuen subdorsally grey, laterally brown, ventrally buff. Pri- 

 maries: a broad white streak from base for four-fifths, anteriorly edged with 

 black, posteriorly shaded with olivaceous; below this the inner margin is viola- 

 ceous brown, mottled with grey ; a fine black streak on submediau ; the extreme 

 inner margin buff, divided by a black line ; the white streak is broadly shaded 

 anteriorly with violaceous brown ; costal margin reddish brown ; a large pale 

 outer space above vein 3, interrupted by a broad dark grey streak beyond cell, 

 edged above and below by a black line, the posterior line shaded below with 

 olivaceous; outer margin narrowly grey, cut by pale veins and edged by buff 

 lines, and inwardly also with black; cell spot greyish, irregular, bordered by a 

 grey line finely edged with black, toothed towards base, and jirolonged outwardly 

 to vein 6; the portion towards base forms an outward curve towards the white 

 streak. Secondaries whitish ; veins brown ; a terminal dark brown line; lirown 

 shadings on inner margin ; a dark brown spot at anal angle. 



9- Head, collar and thorax reddish brown ; patagife dark grey. Primaries: 

 a short white streak at base below median ; inner margin violaceous brown below 

 submedian, olivaceous above it; dark streaks on submedian and extreme inner 

 margin ; costal margin from one-fourth to apex broadly dark violaceous brown 

 and containing the two black lines beyond cell above veins 4 and 5; from basal 

 fourth of costa a pale violaceous space extends to outer margin, which becomes 

 darker posteriorly; an outer lunular, fine, geminate line curves and connects 

 with the two prolongations of discal spot; outer margin darker than in the \. . 

 Secondaries brown; blackish along outer margin ; a fine subterminal buff line; 

 fringe buff. Expanse % 47 mm. ; 9 46 mm. 



Habitat. — Omai, British Guiana. 



RiTargia guianensis.— Head and thorax mottled dark brown and 

 white. Abdomen dark brown above, white underneath. Primaries silvery 

 white ; markings and irrorations dark brown ; a small triangular space-on costal 

 margin near base, and a larger similar space occupying the inner margin, and 

 crossed by a velvety black dentate and oblique line; five spots on costa between 

 middle and apex; a fine median line partly geminate, and both followed and pre- 

 ceded by irrorations; an outer velvety line, lunular above inner margin to vein 

 4; followed by some velvety streaks most noticeable towards costa where they 

 are shaded with brown; a subterminal lunular line, and a fine teruiinal line; 

 fringe grey and brown. Secondaries white, broadly dark brown on inner mar- 

 gin ; outer margin and costa narrowly dark brown ; veins partly brown. Ex- 

 panse 29 mm. 



Habitat. — Omai, British Guiana. 



Hemiceras inoresca.— J. Body brown, the patagite tinged with lila- 

 cine; some white hairs between antennse. Primaries brown, tinged with lila- 

 cine along innerr margin, costa and beyond outer line ; lines paler, shaded with 



TRANS. AM. KNT. SOC. XXX. JUNE. 1904. 



