STICTOPTERA. Von M. Gaedb. 
371 
parallel to the margin, brownish before it in front. Hindwing normal. Besides there are 2 forms. — 1. laba Strd. 
The spot at the costal margin smaller, the exterior median area not red-brown. — 2. daba Strd. Like the 1st 
form, but the median vein and vein 1 black. — 38- 44 mm. Darjeeling, Singapore, Borneo. 
S. grisea Mr. (34 d) is very similar to semialba, and Proitt's opinion that grisea and ferrifera are forms 
of semialba may be correct, yet it is advisable to separate them in order to be able to arrange the many other 
forms in a better way. Forewing of grisea lilac greyish brown, also with greenish scales. The species is character¬ 
ized by the fine black rather vertical median line and the double exterior line which is extra-angular behind the 
cell-angles and contains below them thick black spots as far as the inner margin. A dark blotch below vein 2 
at the margin. — tala Strd. is a form in which the forewing exhibits a white spot at the base and an inverted 
V-spot from the costal margin to vein 1 behind it. 38—48 mm. India, Tonkin, Singapore, Borneo. fasci- 
margo E. Prout (34 d) has a somewhat narrower marginal band on the broader hindwing. The marking on the 
forewing is more distinct, faded lilac brown bands before and behind the interior line. The anal tuft is stronger. 
7 A A known from Ceram. We figure a light form from Borneo. 
S. ferrifera Wkr. (34 e) is very similar to grisea, but darker. The median line is almost invariably much 
thicker and not directed towards the base right below the costal margin, but its slight curve is below the cell. 
The spots in the exterior line are very indistinct. The submarginal line shows a white arrow-shaped spot below 
vein 3 and mostly another one above vein 3, it may also be prolonged to the costal margin. The $ is mostly 
somewhat lighter. Besides there are 6 forms: — 1. Forewing somewhat greenish yellow at the base, before the 
reniform macula, before the exterior line and at the middle of the distal margin. — 2. (34 e). Forewing with a 
white inverted V-spot before the median line. — 3. Forewing greenish yellow behind the middle and at the anal 
angle. — 4. Fore wing with three black spots near the base, the reniform macula black, and black at vein 2 at 
the margin. — 5. The 2nd and 4th forms are united here. — 6. The space before the median line extensively 
dark, lighter behind it as far as the exterior line. This form seems to be rather common. 40—45 mm. Singa¬ 
pore, Borneo, Philippines. — latimargo E. Prout chiefly differs in the broader marginal band on the hindwing, 
which is very dark in front. Numerous specimens of it were found in New Guinea, together with the other 6 
forms of ferrifera. -- obalaui B.-Bak., according to E. Prout, is presumably only a form of ferrifera. Forewing 
light reddish brown, the basal area somewhat spotted. The median band pale ash-grey, a short black diffuse 
spot in it before the reniform macula. Exterior line double, notched, bent. Submarginal line composed of a 
double row of white dots, which may almost be denoted as lines. Hindwing diaphanous, the marginal third 
dark. 38 mm. Fidji I. 
S. arcuata B.-Bak. (34 e). Forewing greyish ochreous, dark brown at the base, edged with white 
outside. Median area pale brown. Reniform macula very dark brown, with a conspicuous bent just as dark 
stripe from it to the margin close above the anal angle; pale greyish ochreous from this stripe to the pale brown 
median area; pale greyish ochreous above this stripe, darker towards the apex. A triangular subapical dark 
brown stripe at the costal margin, a short greyish ochreous dentate line behind it. $ 40—42 mm. New Guinea. 
- nigribasis E. Prout 34 e) shows a dark nut-brown base on the forewing as far as the median line, paler is 
only a spot at the costal margin and a L_ before the median line. A short black streak directly at the base at 
the costal margin. The dark blotch does not proceed from the reniform macula, but only from the exterior line. 
38—42 mm. A few specimens from Ceram. — We figure a specimen from New Guinea. In both the specimens 
at hand the median line is very indistinct; the black blotch to the margin is absent, and there is but one arrow- 
shaped spot as in the allied species. In both the arcwata-specimens at hand the basal spot is more intensely 
edged with white inside. — The form with an inverted V-spot occurs also here, but it was not yet known. 
S. melanistis Hmps. (34 f). Blackish brown, with a slight lilac grey gloss. A large elliptical reddish 
yellow spot at the base. Interior line indistinct, black, directed inward, only discernible on dark specimens. 
Ring-macula and reniform macula large, edged with black. Median line undulate, straight, somewhat outward. 
Exterior line double, slightly projecting at the cell-angles, otherwise parallel to the distal margin, bluish black 
behind it. Reddish yellow before the notched light submarginal line. The dark margin of the hindwing is very 
broad. Forewing of $ more intensely greenish grey. Besides there are several forms: — 1. melanistella Strd. 
The reddish yellow basal spot extends to the exterior line, leaving a dark spot at the middle of the costal margin. 
— 2. melanistana Strd. The reddish yellow spot may on the contrary be also quite absent. — melanistodes Strd. 
The ground-colour may be ochreous reddish brown. — 38—46 mm. New Guinea. 
laba. 
daba. 
grisea. 
tala. 
jascimargo. 
ferrifera. 
latimargo. 
obalaui. 
arcuata. 
nigribasis. 
melanistis. 
melanistella. 
melanistana. 
melanistodes. 
S. melancholica E. Prout, according to the author, resembles melanistis (34 f) and does not differ from melancholi- 
it in the genitals, but judging from the figure it is very similar to ferrifera (34 e). The shape of the median line 
and the brightening below the reniform macula as in ferrifera. It lacks, however, the white spots near the anal 
angle, and the space is only considerably lighter. The dark margin of the hindwing is very broad. 42—44 mm. 
Ceram. 
S. atrifera Hmps. (34 f) is very similar to the 2nd form of ferrifera, but the exterior line does not extend atrifera. 
so much inward below the cell as in ferrifera, but it remains more parallel to the distal margin. The bluish black 
