COSMOPTEKYGIDJ?. 
573 
Pyroderces nephelopyrrha Meyr. 
Formosa, Tainan, bred November from cotton-balls {Prof. S.Issiki). 
BALIONEBRIS, n. g. 
Head smooth; ocelli posterior; tongue developed. Antennee 
cf simple, scape elongate, slender, without pecten. Labial palpi 
long, recurved, second joint with rough projecting scales beneath 
towards apex and slightly expanded at apex above, terminal joint 
as long as second, slender, acute. Maxillary palpi rudimentary. 
Hind tibiae rough-haired above. Forewings lanceolate, 16 simple, 
2 from towards angle, 5 absent, 7 and 8 out of 6, 7 to costa, 9 and 10 
from towards angle, 11 from middle. Hind wings |, narrow-lanceo¬ 
late, cilia 4; 2-4 parallel, 5 absent, 6 and 7 rather approximated 
basally. 
Allied to early forms of Labdia. 
Balionebris bacteriota, n. sp. 
<5 $ . 7 mm. Head whitish, a yellow-ochreous median streak. 
Palpi dark grey, internally whitish. Antennae grey. Thoraxwhitish, 
fine ochreous lines in centre of dorsum and on inner edge of tegulae. 
Forewings prismatic whitish, suffusedly irrorated ferruginous- 
brown ; short fine transverse-linear blackish marks above dorsum 
at | and above tornus; a minute black linear mark at apex : cilia 
grey, a few black specks towards base at apex and tornus, lighter on 
tornal area. Hindwings and cilia light grey; in <5 a very long 
fine expansible light greyish hairpencil from base of costa. 
Formosa, Taihoku, November {Prof. S . IssiJci) ; 2 ex. 
Mompha leucochrysis, n. sp. 
$. 10-11 mm. Head pale leaden-grey, face tinged whitish. 
Palpi whitish. Thorax leaden-grey. Forewings bronzy-grey ; a 
subquadrate or irregular white antemedian blotch on dorsum reaching 
slightly beyond fold, an elongate pale golden partly black-edged blotch 
resting on this above and nearly reaching costa and base; a pale 
golden-metallic black-edged spot towards costa in middle, another 
on costa at and a third in disc rather beyond second ; a triangular 
white spot on costa towards apex, a patch of dark and pale irroration 
lying between this and preceding markings, and extending to termen 
below apex ; some slight variable golden and blackish marking on 
dorsal area posteriorly ; a raised golden-metallic black-edged spot 
occupying lower part of termen : cilia light grey, above apex three 
converging blackish lines separated by white spaces, middle line 
prolonged straight downwards to opposite tornus. Hindwings 5 and 
6 stalked ; dark grey ; cilia grey. 
Argentina, Alta Gracia, February {C. Bruch)', 2 ex. 
