Bulletin - United States National Museum

184 U.S. NATIONAL MUSEUM BULLETIN 257
Female, .30-32 mm.
Tonica argessa, new species
Figures 272-27.3, 281, 657
Head and antenna white, tinged creamy with
a slight silky gloss. Palpus verj^ long, median segment with long
rough projecting scales and hairs toward apex above and beneath,
terminal segment shorter than median, roughish along foreside, backside
with two loose tufts of rather long hairs, just above middle and
at apex; white, median segment along lower edge slightly suffused
with ochreous greyish, projecting hairs at apex mixed with fuscous,
a few dark fuscous scales at the base of terminal segment; terminal
segment w^hite, dark fuscous irroration along anterior edge and a
median and a subapical incomplete band formed by the same
irroration. Thorax creamy white, rather suffused with light ochreous
grey. Abdomen pale yellowish white, dull. Legs white.
Forewing subtruncate, rather broad, moderately narrowed posteriorly,
broadest at 1/4, costa strongly sinuate anteriorly, less so
posteriorly, rounded and prominent and with a roughish fringe along
second fourth, base of costal edge smooth, apex rounded, termen
rounded, little oblique. White with a creamy tinge; upper half of
wing sparsely strewn with sordid pale ochreous-greyish dots and a
few dark brown minute scales, this dusting becoming more dense
along and towards costal prominence (from beyond base of wing)
posterior third of costa and cilia to before apex with a narrow suffused
rather bright tawny streak; a conspicuous outwards-oblique transverse
almost straight crest of raised scales, mixed with sordid pale
ochreous greyish and tawny, becoming slightly broader downwards,
from upper edge of cell at 1/3 of wing to middle of fold; a minute
ochreous-greyish tuft on base of vein 6; a straight, sHghtly inwardsobHque
streak of slightly tumescent and therefore less glossy scales
well before termen, from A^ein 7 to end of dorsum. Ciha white.
Hindwing yellowish white, with a silky gloss. Cilia concolorous.
Female genitalia: Postapophyses moderate, anapophyses extremely
short. Sterigma conical, lamellae ante- and postvaginalis
almost congruent, gradually narrowed toward top, which is emarginate.
Signum with basal plate strongly corrugated, hook slender.
Material examined: Luzon, Benguet Subprov., 800 ft., Klondyke,
Camp 1, 10.TV.1912 (A.E. Wileman), 19, holotype, genit. slide 5522.
Same data, 20.IV. 19 12, 2 9, paratypes (Rothschild bequest, BM).
A very distinct species.
Tonica citrantha, new species
Figures 279-280, 658
Female, 37 mm. Head white. Antenna white, streaked and
ringed above with black. Palpus (terminal segment missing) white,