116 U.S. NATIONAL MUSEUM BULLETIN 257 



Hindwing as in male, but veins touched more clearly with golden 

 yellowish, becoming darker in certain lights. Underside as in male. 



Male genitalia as described with the genus. 



Female genitalia: Eighth segment rather sclerotized throughout, 

 upper edge of ventrite emarginate in middle, on both sides of this, a 

 narrow strong ridge. Ostium bursae connected with emargination 

 by a shallow impression, moderate, less than inner half formed by 

 the sternite. Lower edge of the 8th segment normal. Signum, a 

 strong transverse rhomboidal sclerite with serrulate edge. 



Material examined: Luzon, Mt. Makiling (Baker), 1 cf, holotype, 

 genit. slide 5147, 1 9, allotype, genit. slide 5148 (USNM). 



Amorbaea subiista, new species 



Figures 151-152, 585 



Female, 25 mm. Head, palpus, thorax cream color. Antenna pale 

 bronze fuscous. Abdomen glossy yellowish white, bands of bristles 

 coppery, concealed by white scales. 



Forewing suboval, slightly dilated, costa moderately ciu-ved to- 

 ward extremities, apex obtusely pointed, termen straight, oblique. 

 Creamy, with a golden gloss, becoming slightly deeper colored towards 

 base, more so along dorsum below fold; very narrow blackish-grey 

 suffusion along dorsum around its middle; sparse sprinkling of dark 

 grey-fuscous scales above end of fold, sparsely extended to middle of 

 wing breadth. CUia white, tipped with grey. 



Hindwing glossy white with a strong golden gloss. Cilia glossy 

 silvery white. 



Female genitalia: Eighth segment moderately sclerotized, upper 

 edge broader emarginated than in Amorbaea subtusvena, lateral ridges 

 situated inside this emargination ; lower edge of sternite twice strongly 

 emarginate, a spheroidal tumescence of intersegmental membrane in 

 each emargination. Ostium bm-sae narrowly erected, almost margi- 

 nal, without a furrow to the caudal edge of sternite. Signum smaller. 



Material examined: Luzon, Mt. Makiling (Baker), 1 9, holotype, 

 genit. slide 5149 (USNM). Related to the preceding species. 



Metathrinca Meyrick, 1908 



Metalhrinca Meyrick, 1908, Joum. Bombay Nat. Hist. Soc, vol. 18, p. 625. — 

 Fletcher, 1929, Mem. Dept. Agric. India, Ent. ser., vol. 11, p. 138. — Clarke, 

 1955, Catalogue . . . Microlepidoptera . . . Meyrick, vol. 2, p. 445, pi. 

 221, figs. 1-ld (wings, neuration, head, genit. cf )• 



Type species: Metathrinca ancistrias Meyrick, 1908, Ceylon. 



The genus has been based chiefly on the neiu'ation. Although the 

 nem-ation of the following species varies slightly and is not congruent 

 with that of the type species, the genitalia of both sexes and the entire 



