12 
MICROLEPIDOPTERA OP NEW GUINEA 
scattered ochreous-olive scales forming a spot above and one below the 
middle; a transverse curved outwardly concave yellow patch from below 
1 /s of the costa, reaching 2 / 3 across the wing, separated in three elongate- 
ovate spots by two line lines of the ground colour: the upper spot out- 
wardly oblique, the median spot small, longitudinal, the lower spot 
largest, parallel to the fold, slightly extended along the fold anteriorly; a 
longitudinal streak occupying somewhat less than x / 4 of the wing breadth, 
anterior half slightly above the middle, posterior along the middle of wing, 
running from 2 / g of the disc to the termen, hardly sinuate, with the posterior 
halt or third bifid, forming two narrow attenuated lines along veins 5 and 
6, respectively; a minute yellow line along posterior half of vein 7; a some- 
what undulate narrow subterminal streak, parallel to the edge of the 
wing, from vein 7 to vein 3, terminating three longitudinal lines men- 
tioned above; an elongate wedge-shaped yellow spot along fold from the 
middle of the wing, with its base obliquely truncate, with the acute top 
reaching distad to just above 1 / i of the dorsum. Cilia fuscous-purple, 
posterior half snow-white. Hind wing elongate-semiovate, about 1, termen 
sinuate; deep orange-yellow, markings fuscous-purple; the costal third 
fuscous-purple, the lower edge of this colour straight, with a small rounded 
projection at 3 / 5 , a moderate streak from the base with its lower edge 
running along the fold, abruptly narrowed beyond the middle, thence 
running above the told, to about middle of the termen, at the base 
moderately dilated and sending off an attenuated subterminal streak, 
merging in the dark costal area ; a few orange-yellow scales before the apex. 
Cilia (imperfect) fuscous-purple, posterior 2 / 3 white along the termen from 
below the apex to the middle. Underside of the hind wing orange, a black 
spot on the base of the costa, apex narrowly black, veins and the sub- 
terminal streak (as in the fore wing) black, a blackish irroration at 2 / 3 of 
the costa; a small spot on the costa beyond the base and two thick 
longitudinal streaks not reaching the termen, brilliantly shining metallic 
blue-leaden, first streak from beyond the base along vein 6, with the apex 
curved upward, second one from the base, somewhat sinuate in the 
middle, tolerably corresponding with the plica! streak of the upper side. 
Hollandia, sea level, July, 1938. One specimen. An elegant, slender 
species with markedly coloured under side of the hind wing. In spite of 
slight discrepancies with the description of Prodosiarcha, viz., a rather 
smooth lower edge of the median segment of the labial palpi, a long 
terminal segment (somewhat over 1), and the sinuate termen in the hind 
wing, we place this insect in the present genus, pending further evidence. 
Hemiarcha Meyrick, 1904 
Hemiarcha Meyrick, 1904, Proc. Linn. Soc. N.S. Wales, vol. 29, p. 331. Gener. 
Ins., fasc. 184, pp. 146 — 147, 1925. Fletcher, Mem. Agric. Ind., Ent., vol. 11. p. 
106, 1929. Gaede, Lepid. Catal., part 79, p. 390, 1937. 
