372 
02ARBA. By Dr. M. Draudt. 
vicina. 
metaleuca. 
implora. 
squami- 
cornis. 
iannul. 
aeria. 
nebula. 
abscond/ita. 
qeta. 
bicornis. 
melano- 
donta. 
besidia. 
bettina. 
spot with a brow'n discoidal line in it and a large round black spot behind it, which is fused with the postmedian 
line being bordered with lilac white outside, subterminal area light olive brown mixed with lilac; an oblique 
deep brown costal-marginal shadow' is before the lilac-white undulate line. Hindwing brownish-grey. French 
Guiana (Cayenne). 
0. vicina Schs. (51 i). Forewing reddish purple, darker in the marginal half with double transverse 
lines, the exterior one filled with whitish; the ring-macula is a black dot, the white reniform macula is 
surrounded with black; the undulate line is composed of small white sagittate spots inside brownish-grey. 
Hindwing brown. Brazil (Castro, Parana). 
0. metaleuca Hmps. (51 i) has white forewings feebly dusted with brownish, with a black dot in the base 
of the cell and indistinctly double transverse lines; costal margin and median area dusted with a darker brown, 
the oblique narrow reniform macula is situate in a white spot bordered inside with black, a brown subapical 
costal-marginal spot behind it; the white finely dentate undulate line is shaded with brown inside. Hindwing 
white, brownish at the margin. Brazil (Amazons). 
0. implora Dyar (51 i). Forewing blackish-brown with white transverse lines, the anterior one inter¬ 
rupted and indistinct, the posterior one with 2 dents behind the cell, black subterminal filling behind it; median 
line distinct, the reniform macula partly surrounded with white, undulate line fine, white. Hindwing brownish- 
black. Mexico (Zacualpan). 
0. squamicornis Dyar (51k) exhibits olive greenish forewings, shaded with red-brown at the costal 
and distal margins and at the fringes; the small black reniform macula in an oval green spot; transverse lines 
fine, brown, undulated, the exterior one double in its upper half, a dark subterminal shadowy line. Hindwing 
brownish-grey. Mexico (City). The antennae are thickened here by black scales on % of their length. 
0. fannia Drc. Forewing reddish brown with double transverse lines, short black streaks behind the 
exterior line; the ring-macula is a black dot, the reniform macula surrounded with whitish, prolonged below, 
with a whitish spot above and behind it; a dark subterminal costal-marginal spot; the light indistinct undulate 
line is shaded with blackish-brown inside, a black apical spot behind it. Hindwing coppery brown. Mexico (Tabasco). 
0. aeria Grt. (51 k) is dusted and strewn with brown on the whitish ground, with indistinct transverse 
lines, the posterior one double, and with an oblique median line, black dusting behind it in the upper half: 
2 black streaks behind the whitish reniform macula, a black subapical spot outside above them; the white 
undulate line is shaded with brown inside. Hindwing brown. United States (Texas). 
0. nebula B. & McD. (51 k) is smaller than aeria , reddish grey, dusted with olive brown in the distal 
half of the median area and behind it at the costal margin, with double transverse lines filled with reddish; the 
narrow oval reniform macula is surrounded with white, a pink tinge behind it. Hindwing light smoky grey. 
Texas, Florida. 
0. abscondita Hmps. Forewing grey, dusted with red-brown as far as the postmedian line, then lighter 
brown with a dark postmedian spot from the costal margin to the discal fold; transverse line double, dark 
brown, filled with whitish, a white, inside dark brown streak at the cell-end, the posterior transverse line with 2 
dents behind it, on the discal fold a black streak to the feebly waved undulated line which is bordered with dark 
brown inside, behind this line a small blackish-brown apical spot. Hindwing greyish-brown. Expanse of 
wings: 14 mm. Peru. 
0. geta Drc. has grey forewings tinged with pink and strewn with brown, with a brown median area, 
of the double transverse lines the anterior one is filled with white, the posterior one with pink; reniform macula 
narrow and oblique, whitish, surrounded with black and strangulated; the postmedian area contains a large 
brown costal-marginal spot dusted with grey above, with a black streak on the discal fold, the whitish undulate 
line bordered with brown on both sides cuts a small apical triangle off from the costal-marginal spot. Hindwing 
light brown. Mexico to Paraguay. 
0. bicornis Hmps. (51 k) is similar to geta, the median area is red-brown only in its distal half, like 
the large costal-marginal spot behind it; the anterior transverse line is much more excurved below the cell, 
the reniform macula is distinctly pink, bordered with white and black inside, the undulate line is also pink. 
Hindwing brown. Paraguay. 
0. melanodonta Hmps. (51 k). Forewing greyish-brown, strewn darker, somewhat lighter post- 
medianly and in the marginal area, with dark transverse lines, the posterior line double, filled and bordered 
with whitish, the small grey reniform macula is surrounded with brown, with a white dot below; a black apical 
spot behind the whitish undulate line. Hindwing brown. From Trinidad. 
0. besidia Drc. Forewing dark brown with a purple grey reflection with dark transverse lines, the 
anterior line single, bordered with whitish on both sides towards the costal margin, the posterior line double, 
filled with white, with a black spot on the discal fold behind it; the narrow whitish reniform macula is surrounded 
with black, its lower end tied off in a small extra spot, the white undulate line shaded with brown inside. 
Hindwing dark red-brown. Expanse of wings: 24 mm. Mexico (Guerrero). 
0. bettina Drc. is much smaller than the similar besidia, the transverse lines not bordered or filled with 
a lighter colour, but with red dots on each side at the costal margin, the reniform macula scarcely whitish, its 
