108 U.S. NATIONAL MUSEUM BULLETIN 257 



Forewing suboval, broadest at 1/3, costa rather curved anteriorly, 

 less so posteriorly, apex tolerably pointed, termen gently curved, 

 oblique. Silvery white, with a distinct purple gloss, markings black. 

 Extreme edge of base of costa black; two small round spots, on base 

 of costa and beyond base just below costa, respectively; a narrow 

 elongate spot below these, above middle of disc; a large semioval 

 spot beyond preceding, just above cell, at 1/3 of wing; three very 

 faint equidistant dots along posterior 2/5 of costa; three round dots 

 in a straight, inwardly oblique row across middle of disc, the lower 

 pair approximated, just above and below middle of fold, third on 

 upper edge of cell; a pair of round dots on each upper and lower 

 angle of cell; a less regular dot before middle of termen. Cilia white. 

 Underside of wing light fuscous grey, with a large elongate-oval 

 patch of modified very short black scales edged narrowly by naked 

 area; this patch extending halfway above, halfway inside cell, from 

 beyond base to middle of wing. 



Hindwing glossy white, with a faint yellowish tinge, towards apex 

 becoming very pale purplish. Costa with an elongate-oval dilatation, 

 forming a shallow pocket along its basal half, concave and filled with 

 very dense short whitish-ochreous scales. In repose this pocket 

 apparently fits exactly over the patch of modified scales on the under 

 side of the forewing. Cilia concolorous. 



Male genitalia: Tegumen broad and rounded, with a prominence on 

 top, flanked by small folds. Uncus present, hooked, slender and 

 curved down, top bifid. Socius, a semioval, aciculate lobe. Valva 

 with basal half rigid and moderately broad, sacculus not modified 

 anteriorly, posteriorly forming a slender, free curved process. Cucul- 

 lus under 1/2, oval and hairy, with a constricted and keeled base, 

 bearing below two slender teeth. Aedeagus small, slender, top dilated 

 and submembranous, base narrower, spoon-shaped, curved. 



Material examined: Mindanao, Davao Prov., east slope of Mt. 

 McKinley, 5600 ft. 25-27.VIII.1946 (CNHM Philippine Exped. 

 1946-47, H. Hoogstraal), 1 cf , holotype, genit. slide 5739. 



An interesting form, showing well-developed and complicated 

 scent organs between wings; however, these manifest sexual dimorphy 

 and are only of specific, not of generic importance. Therefore, I 

 prefer to include the present species in Heterogymna Meyrick, 1913. 



Remotely allied with H. chorospila Meyrick, from India and Java. 



Copromorphidae 



Copromorpha IMeyrick, 1886 



Copromorpha Meyrick, 1886, Trans. Roy. Ent. Soc. London, p. 281; 1905, Journ, 

 Bombay Nat. Hist. Soc, vol. 16, p. 106. — Fletcher, 1929, Mem. Dept. 



