DESCRIPTIONS OF NEW SOUTH AMERICAN MOTHS. B}^ William Schaus, Of T'wirkevhcwi, England. The following-paper is a continuation of one presented by me in these Proceedings, XXIX, 1905, pp. 179-345. (No. U20.) One hun-dred and fift^^-one species are described here. Family CITHERONIID^F]. Genus ARSENURA Duncan. ARSENURA BIUNDULATA, new species. Body brown. Primaries: the costal margin dull gra}', irrorate on basal third with dark brown; cell and beyond to postmedial line butf, irrorate with black and brown; a broad blackish-brown streak on dis-cocellular; antemedial line inwardly oblique from subcostal to median, then outwardly curved, blackish brown, inwardly shaded with buflf; below cell to inner margin brown, also between postmedial and sub-terminal lines; the postmedial reddish, slightly incurved below vein 2; the subterminal whitish, inwardly edged with black, forming a deep outward curve at vein 7 and outward curves above and below vein 3, followed by a black shade irrorated with pale-blue scales, forming projecting markings above and below vein 5, and parti}" followed b}^ whitish from below vein 4 to inner margin; the black shades are inter-rupted from vein 6 to below costa, where there is a large black spot, and replaced b}" a gra}" shade edged with white lines; some dark-red shades above and below vein 6; apex roseate; outer margin otherwise dull olivaceous brown. Secondaries: basal half light brown, with very long scales partly dark brown ; outer part to subterminal clear dark brown; the subterminal white, slightly angled above and below vein 3, followed by a brown shade; a black shade outwardly toothed and irrorate with pale-blue scales; outer margin light brown, with thick dark-brown lunular spot. Underneath grayish bufl', irrorated Proceedings U. S. National Museum, Vol. XXX— No. 1444. 85
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