AMERICAN LEPIDOPTERA. 131) 



Megalopyge govaiia. — Head cream color, frons brown. Collar and 

 thorax brown, the latter with a white tuft posteriorly. Abdomen paler brown 

 Wings brown, paler on the outer margin and towards apex; some darker and 

 longer scales in and below cell ; a wavy outer white shade, and an oblique white 

 shade from cell at vein 2 to outer shade; a fine whitish streak in cell. Second- 

 aries pale fawn color; the veins and a shade below the cell brownish Expanse 

 31 mm. 



Habitat. — British Guiaaa. 



Megalopyge aricia. — Body golden brown. Tarsi black. Primaries 

 gre.v; the basal half with undulating darker scales ; an indistinct quadrate spot 

 in cell; an indistinct subterminal whitish shade; a terminal dark line; fringe 

 dark gre.v. Secondaries whitish; the veins and fringe grey; some light brown 

 hairs on inner margin. Expanse 35 mm. 



Habitat. — Aroa, VenezAiela. 



IWegalopyge iiigrescens. — '^. Body black; anal tuft whitish; tarsi 

 tipped with whitish. Wings somewhat diaphanous, being thinly scaled. Prima- 

 ries black ; apex broadly pale buff ; a subapical dark point; a wavy pale subter- 

 minal line on dark portion from vein 4 to inner margin. Secondaries black; 

 fringe and outer margin pale bufT. 



9 . Similar, but the scales on primaries more crenulate ; the secondaries with 

 the apical third of wing pale hutf. Expanse, % , 23 mm. ; 9 29 mm. 



Habitat. — British Guiana ; Merida, Venezuehi, 



GEROXTIA gen. nov. 

 Antenn?e pectinated to tips. Palpi very minute. Tibiae and tarsi 

 hairy. Primaries: costa straight; outer margin slightly oblique; 

 inner margin convex ; submedian vein bifurcating ; 2 and 4 equally 

 distant from 3 ; 5 from just above lower angle of cell ; 6 from upper 

 angle; 8, 9, 10 stalked on 7; 11 from near end of cell. Secondar- 

 ies with costal and outer margins rounded ; veins 2, 3, 4, 5 about 

 equally distant from each other; 6 from middle of discocellular ; 7 

 and <S anastomizing to end of cell, then bifurcating. 



Geroiitia oinayena. — Head, thorax and primaries grey, the veins very 

 dark. Abdomen and secondaries dark fawn color. Expanse 40 mm. 



Habitat. — Omai, British Guiana. 



THOSCORA gen. nov. 

 AntenniTB pectinated to tips. Palpi minute. Tibiie and tarsi very 

 hairy. Costal margin straight ; outer margin oblique ; inner mar- 

 gin slightly convex. Submedian vein bifurcating. Veins 2, 3, 4 

 equally distant; 5 from lower angle with 4; 6 from just above mid- 



TRANS. AM. ENT. SOC. XXX. JUNE. 1904. 



