166 
EXOTIC MICROLEPIDOPTERA. 
Decadarchis atririvis, n. sp. 
(5 . 13 mm. Head, thorax white, edge of shoulder suffused dark 
fuscous. Palpi white, basal half of second joint dark fuscous 
externally. Porewings elongate, costa slightly arched, apex 
pointed, slightly produced, termen very obliquely rounded; white, 
partially slightly tinged brownish, some irregularly scattered dark 
brown scales ; a very oblique thick blackish streak from base of 
costa, running into an irregular blackish band which rises obliquely 
from costa at and runs downcurved through disc below middle 
to apex, upper edge with a convexity above torn us : cilia white, 
above apex with a spot of blackish irroration, on termen with basal 
and postmedian fine dark fuscous lines, and some scattered points. 
Hindwings grey ; cilia grey-whitish. 
Japan, Tokio, July (S. Issiki ); 1 ex. 
Decadarchis dissepta, n. sp. 
c? . 12 mm. Head, thorax white, a dark grey spot on shoulder. 
(Palpi missing.) Porewings rather narrow, costa gently arched, 
apex shortly upturned, termen extremely oblique ; white ; markings 
blackish suffused grey ; a moderate irregular streak from base of 
costa through middle of disc to apex 1 ,, interrupted into four black 
segments but connected by grey ; some grey speckling on dorsal 
half, and towards anterior part of costa; a short fine oblique dark 
grey streak from dorsum at ^ to fold ; a blackish longitudinal mark 
on costa at j, connected with median streak by grey suffusion : 
cilia white, two blackish lines. Hindwings light grey ; cilia 
whitish-gre}r; an expansible whitish hairpencil from base reaching 
middle and lying beneath forewings. 
Piji, Lautoka, May (II. Phillips ) ; 1 ex. (Brit. Mus.). 
Decadarchis sphenoschista, n. sp. 
5 . 15 mm. Head, palpi, thorax white, a small blaGk spot on 
shoulder. Porewings elongate, costa gently arched, apex obtuse- 
pointed, termen very obliquely rounded ; white ; markings blackish ; 
a dot on costa at base, a short rather oblique streak near base, an 
oblique-triangular spot at a similar blotch in middle, and short 
very oblique streak about |; an oblique-triangular spot from 
dorsum at pointing to a small spot of irroration in disc, an 
oblique-triangular blotch of irroration from dorsum at and a 
small spot of irroration before tornus ; some slight irroration across 
wing about I ; a small blackish apical spot, preceded by a slight 
cloud >of grey irroration : cilia white, a fine median line of blackish 
irroration, on costa and round apex a black subbasal line, on 
costa a fine blackish line on tips, a slender blackish apical bar. 
Hindwings grey; cilia grey-whitish, round apex two greyish 
shades. 
Japan, ToRio, July (S. Issiki ); 1 ex. 
