344 
ORTHOGONIOPTILUM. By M. Gaede. 
Distal margin below the apex blackish. Hindwing with a central dot and an exterior undulating line. 35—45 mm. 
Abyssinia, East and Central Africa. 
Megadi epana cinerea Holl., described as a Drepania, in Ent. News 4, p. 178, may also belong to this 
genus here. 
7. Genus: Orthogoiiioptiluin Swh. 
Antennae also in the $ rather strongly pectinate. Fore wing at the apex in the $ more produced, in 
the $ only with a short point and a concave distal margin. Veins 10 + 7 + 8 + 9 stalked, 11 absent. Hindwing 
of at the anal angle pointed, in the $ with small lobes inwards. The shape of the hyaline spots varies much 
in both wings. 
Type: adiegatum Karsch. 
adiegatum. 0. adiegatum Karsch. (59 d). Umber-brown, the black marking rather distinct. Median and exterior 
lines strongly notched. At the cross-vein 3 or 4 small hyaline spots, in the $ 3 larger ones. Before and below 
them to the centre of the inner margin a dark shadowy band continued on the hindwing as a basal band. From 
the apex to vein 5 near the margin a light line, outside of it as far as vein 5 a dark band continued in the 
$ in spots, in the $ as a dentate line. Hindwing with hyaline dots and the continuation of the exterior black 
line. Before the margin in the $ dark spots, in the $ a dark band. In the $ the apex is rather pointed. £ 
dollmanni. 75 mm. Cameroon, Spanish Guinea. — dollmanni Jord. is very similar. At the costal margin of the 
forewing a few conspicuous spots, but those at the distal margin much less distinct. The median nebulous 
band is olive brown, less prominent. Costal margin of hindwing slightly pink. In the $ the distal margin of 
the forewing is less excurved, on the hindwing the apex is less projecting. In the hindwing the anal angle 
is less acute. Rhodesia. 
adustum. 0. adustum Jord. 2. Marking similar to adiegatum -§, but more indistinct. Hyaline spots also similar, 
but more separated. In the hindwing the anterior hyaline spot is situate straight above the lower one, not 
inwards of it. Ground-colour varying between reddish-brown and dark olive brown with a grey shadow. Interior 
and exterior lines as in adiegatum, also the light apical line. Distal margin more uniformly dark. Hindwing 
likewise with a darker distal margin, the apex less projecting, owing to the absent slight indentation below 
it. $ 80 mm. Congo. 
deletion. 0. deietum Jord. In the colour similar to vestigiatum, more intensely olive yellow. Markings indistinct 
except the two dark spots at the costal margin at the beginnings of the interior and exterior lines, the apex 
somewhat less produced. Below the interior spot at the costal margin and in the submarginal area light reddish- 
brown. Traces of a light and dark apical streak, 2 hyaline spots small, the third punctiform. The indentations 
of the exterior line brownish-red or of the ground-colour. Hindwing with 3 fine hyaline spots. 60 mm. Gold Coast. 
pro.v. 0. prox Karsch. (= geniculipennis Strd.) (59 e). Varying from a light reddish-brown to dark chestnut- 
brown. The two notched lines on the forewing distinct, both surrounded by grey. At the costal margin inwards 
of both one light spots or streak each. Hyaline areas rather large in the $. In the $ the median area is somewhat 
darker, in the $ on the centre of the distal area an undulating line, the exterior line and the hyaline spots as 
monochro- on the forewing, the latter spots also surrounded by grey. 75—85 mm. Cameroon, Gold Coast. — monochromum 
mum. Karsch (59 f) is a dark brown specimen (^) with very diminutive hyaline spots, the exterior lines being hardly 
hrunneum. recognisable. 60 mm. Cameroon. - brunneum Jord. The hyaline spots are in the <$ not much smaller than 
in the §, the $ is more olive brown, with a warmer tint than normal prox-Q, which, however, is also the case 
in geniculipennis Strd., so that, if the form has to be denominated at all, Strand’s name would have the priority. 
kahli. Gold Coast. kahli Holl. is a dark, fawn-coloured form hued with claret-colour, with very distinct lines. In 
the $ there is not any hyaline spot in the forewing, in the hindwing there is but a very small one. The $ probably 
belonging to it has very large hyaline spots. The grey brightening on the forewing behind the exterior line 
is rather distinctly defined, at the costal margin almost white, the apex itself as dark as the centre of the wing. 
Cameroon. 
chalix. 0. chalix Jord. 2. Similar to incana, but the latter species has much shorter pectinated antennae 
than chalix. Ground-colour hazelnut-brown with grey shadows. The dark ajrical line is absent, but there is 
a dark shadow-like band to the inner angle. The two lines are recognisable, but not distinct. Distal margin 
yellowish-brown. Hindwing with a sharp apex, distal line recognisable. Hyaline spots in both wings moderately 
large. 65 mm. Lake Tchad. 
vestigiatum. 0. vestigiatum Holl. (59 f). Violettish-brown mixed with greyish-brown. Exterior line inside with 
ochreous spots, more intense ochreous spots around the small hyaline spots. From the apex a dark line extends 
indistinctly waved in front of the whole distal margin. On the hindwing quite similar, servatia Weym. is probably 
the $ belonging to it. Ground-colour more greyish-brown, the hyaline spots almost as large as in the U the 
yellow spots around the hyaline areas. In the £ and $ on both sides of the wings before the dark apical line 
another light streak. In the the yellow spots at the exterior line are also present beneath, but the lines 
themselves are feeble, in the $ without any yellow spots at all. 55—65 mm. Cameroon, Gold Coast, Ogowe. 
incana. 0. incana South. (= septiguttata Weym., pancratia Weym.) (59 f). Apex of $ forewing not projecting 
so far as in the other species, in the the inner angle is more rounded off. Similar to prox. Tarsi, however, 
