MICROLEPIDOPTERA OF PHILIPPINE ISLANDS 271 



three equidistant dark spots; anterior half of dorsum from beyond 

 base as far as fold irrorated with fulvous; a large, oval raised tuft 

 on end of cell, rather pale fuscous, becoming dark brown posteriorly, 

 scales with white tips on lower half of tuft posteriorly; another similar 

 but much smaller tuft above and slightly beyond it; an oblique 

 transverse dark fuscous blotch before apex, preceded by a parallel 

 streak of not obscured ground color, forming a rather conspicous 

 oblique fascia; numerous variously colored smaller tufts along and 

 between veins. Cilia greyish creamy, with a dark brown interrupted 

 subbasal line, a faint fuscous supramedian line and interrupted dark 

 fuscous-grey suffusion along tips of cilia. 



Hindwing with a hyaline spindle-shaped patch between bases of 

 vein 2 and 3 and a small and narrow one between bases of 3 and 4; 

 rather dark fuscous golden, veins, costa, and dorsum suffused with 

 purple. Cilia dull dark fuscous. 



Female genitalia: Lamella antevaginalis inverted- trapezoidal, 

 erected, upper edge gently emarginate. Ductus and corpus bursae 

 simple. 



Material examined: Luzon, Mt. Makiling (Baker), 1 9, holotj^pe, 

 genit. slide 5267; 1 9, paratype (USNM). 



Closely allied to G. captiosella Walker, but very distinct by the 

 hyaline spots in the hindwings and by darker color of both fore- 

 and hindwings. 



Gerontha nivicaput, new species 



Figures 424-425, 768 



Female, 27-28 mm. Head white. Antenna with scape white, fla- 

 gellum dark fuscous, finely pale-ringed. Labial palpus dark grey, 

 more than apical half of median segment white, terminal segment 

 whitish; a series of large black lateral setae along basal and median 

 segments. Maxillary palpus whitish, dark ringed. Thorax grey, 

 strongly suffused with dark fuscous purple, apex and tips of tegulae 

 lighter grey. Abdomen dark fuscous purple, anal tuft and venter 

 whitish, sides whitish with dark segmental bands. Posterior tibia 

 fuscous, top white, white spots around bases of median spurs, tibia 

 fuscous, white ringed. 



Forewing narrow, elongate-oval, costa rather distinctly concave, 

 rounded but very faintly prominent at 3/4, apex rounded, termen 

 rounded, oblique. Vein 2 from rather before angle, 3 and 4 short 

 stalked from angle, 7 to apex, 7 and 8 stalked, 9 free, from well before 

 apex, 11 from 1/3; with numerous large raised scale tufts. Silvery 

 grey white, suffused with darker grey, irrorated and marked with 

 dark fuscous purple. A series of numerous transverse suffused 

 blotches along costa, more or less continued by series of similar 



