184 U.S. NATIONAL MUSEUM BULLETIN 257 



Tonica argessa, new species 



Figures 272-27.3, 281, 657 



Female, .30-32 mm. 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, back- 

 side 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 post- 

 eriorly, 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 trans- 

 verse 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 inwards- 

 obHque 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 ex- 

 tremely short. Sterigma conical, lamellae ante- and postvaginalis 

 almost congruent, gradually narrowed toward top, which is emargi- 

 nate. 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, para types (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, 



