436 NOCTUID®. 
from middle of costa; postmedial line strongly bent outwards below 
costa, then indistinctly double, oblique and minutely dentate below 
vein 4, defined on outer side by white towards inner margin, some 
white points with blackish streaks between them beyond it on costa ; 
subterminal line black-brown defined on outer side by white, 
minutely dentate below costa, bent inwards and strong between 
veins 8 and 5,its outer edge produced to a tooth below vein 6, bent 
inwards at vein 2, then oblique to inner margin; an oblique dentate 
black mark from termen just below apex with some white below 
it; a series of black striz defined on inner side by white lunules 
just before termen; cilia with a waved blackish line at middle. 
Jlind wing white, the veins and inner area faintly tinged with 
brown, the terminal area broadly fuscous brown with a slight 
waved white line just before termen; cilia white slightly mixed 
with brown; the underside with the costal area irrorated with 
brown, a black discoidal spot. 
Hab. Br. N. Guinea, Owgarra (Meek), 1 9, Dinawa (Pratt), 
1 2, Mt. Kebea (Pratt), type T in Coll. Bethune-Baker. xp. 44 
millim. 
6783. Risoba olivens. (Plate CLXXXVI. fig. 2.) 
Risoba olivens, Beth.-Baker, Nov. Zool. xiii. p. 234 (1906). 
3. Head red-brown; palpi with some grey at base and tips; 
lower part of frons whitish ; tegule grey irrorated with red-brown, 
with red-brown line at base and slight black tips; thorax white 
mixed with red-brown and blackish; pectus white tinged with 
brown; legs red-brown, the tarsi ringed with white; abdomen 
red-brown mixed with greyish, with paired dorsal black bars on Ist 
two segments and black crest on 4th segment, the ventral surface 
with some white at base and on anal tuft. Fore wing red-brown 
tinged with olive; the basal area white to the very oblique minutely 
waved subbasal line from costa to inner margin with diffused red- 
brown patch on it on inner area, and followed by a white streak on 
inner margin extending to postmedial line; antemedial line very 
indistinct and oblique, minutely waved; claviform and orbicular 
absent ; reniform smail, round, with red-brown centre and whitish 
annulus defined by blackish; a slight dark striga from middle of 
costa; postmedial line dark brown slightly defined by whitish on 
outer side, acutely angled inwards below costa, then strongly bent 
outwards, then minutely dentate and incurved below vein 4; some 
white suffusion on costal area from end of cell to subterminal line 
with slight blackish streaks on costa; the subterminal line dark 
brown with black-brown lunule on it below costa met by a diffused 
oblique brown fascia from apex with white patch below it and 
blackish streaks on the veins, the line minutely dentate, angled 
outwards below vein 7 and at vein 4, then oblique; a series of black 
strie just before termen defined by white lunules on inner side; 
cilia with some white at base on apical half and waved brown 
