208 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxix. 



IDALUS NEJA, new species. 



Body ochreous yellow. Palpi and legs grey; a light brown streak 

 on patagia. Primaries pale yellow; a brown spot at base between 

 median and submedian; large anteraedial spots from ])elow costa to 

 submedian, below this a small spot, all coalescing, greyish brown; the 

 balance of spots still paler; two in cell, one at upper angle, the other 

 close to vein ?>: a row of spots between veins close to cell, a post- 

 medial row of larger spots, the one between vein 2 coalescing with 

 a grey patch at angle; the spot between 5 and (i rather elongated; a 

 submarginal row of round spots between the veins, and smaller margi- 

 nal spots on the veins. Secondaries white; the inner margin pale 

 3'ellow. 



Ex^Mnse. — ;-i6 nmi. 



Ilahltat. — St. Joan, Maroni River, French (xuiana. 



Tijpe.—OAt. No. 8567, U.S.N. M. 



IDALUS FLAVOPLAGA, new species. 



Antennpe serrate and fasciculate. Secondaries with vein 8 before 

 lower angle of cell; 6 and 7 coincident, shortly stalked with 8. Palpi 

 grey. Head yellow; a black spot on frons, one between antenna? and 

 two behind. Collar yellow; two blackish grey spots. Thorax dark 

 grey; patagia yellow, edged dorsally with black. Abdomen yellow, 

 the last two segments grey; anal hairs white. Legs grej^; fore coxse 

 3^ellow spotted with black. Primaries dark greyish brown; the veins 

 ))utf; a yellow streak on inner margin widening outwardly; a large yel- 

 low spot postmediall}" from costa to vein 3; basally the spot is oblique, 

 outwardly sliglitly angled between 5 and 6; a buff streak from base 

 between median and submedian veins; fringe dark grey. Secondaries 

 yellowish, tinged with ochreous on inner margin. 



Expanse. — 28 mm. 



Hahitat. — St. Laurent, Maroni River, French Guiana. 



Tijpe.-~0<ii. No. 8568, U.S.N.M. 



IDALUS ALBICOX^E, new species. 



Palpi black; a crimson lateral streak on basal half. Head and 

 collar 3'ellow. Thorax lilacine grey; yellowish in front; crimson 

 streaks on patagia. Abdomen crimson above; a subdorsal white 

 basal spot; underneath white. Coxte white. Primaries: from base 

 to just beyond cell lilacine grey irro rated with darker scales and out- 

 wardly shaded with red; basal third of costa white; outer portion of 

 wing yellow, incurving slightly between vein 3 and inner angle; 

 above vein 3 a curved row of small clusters of black scales betMcen 

 the veins. Secondaries whitish; a crimson streak near inner margin. 

 Veins 3 and 5 very shortly stalked. 



