Publ. 20. VI. 1910. 
IDEOPSIS. By H. Fruhstorfer. 
217 
Padang Pandjang, West Sumatra. — costalis Moore (76 a) is one of the commonest butterflies of the coslalis. 
island of Nias. — A closely allied form occurs on the neighbouring Batu Islands, which has been described 
from Pulo Tello as batuna Fruhst., with still more reduced black submarginal patches on the hindwing, batuva. 
The costal margin of the forewing unicolorous black, suppressing the wedge-shaped white spots which adorn 
the other subspecies of daos. — nigrocostalis Hag., from Mentawej, has the basal half of the costal margin 
and the upper part of the cell on the forewing more strongly blackened than costalis. Only $$ known. 
Group Aianthis Fruh.st. 
1. anapis, the only species known from the Philippines, approximates closely in the colouring to 
the Philippine Hestia, becomes darker as one proceeds southwards, is broken up into a series of island 
races, and shows at the base of both wings the yellowish tinge so characteristic of Hestia leuconoe, which 
likewise increases from north to south. — anapis Fldr., from Manila and the adjacent Sierra de Mariveles, anapis. 
is a somewhat darker race than the pale bracara subsp. nov., from North-East Luzon, figured by Semper, bracara. 
in which the upperside of the hindwing shows only an obsolescent delicate yellow tinge and the subapical 
spots remain pure white, not enclosing any black. — anapina Semp. is a highly specialized form from anapina. 
Mindoro, of which I have before me a pair collected by Dr. Platen. The black transverse band of the 
forewing in the B is appreciably broader and the submarginal patches on the hindwing are enlarged. The 
latter shows only at the basal part of the cell a yellowish tinge, which in glaphyra Moore, from Mindanao, glaphyra. 
extends over the whole cell. The costal border also covers the anterior half of the cell of the forewing, 
hut the spot at the apex of the cell is not united with the distal border as in anapina. Cell of the fore¬ 
wing in both sexes with black apex, which is likewise wanting in anapina. — messala subsp. nov. is the messala. 
race from East Mindanao, figured by Semper, which is known from S —900 in. above sea-level ; it is an 
albinotic extreme of glaphyra and is characterized especially by the absence of the black patch at the apex 
of the cell of the hindwing in the $$ and the very narrow black bands in both sexes. The subapical 
area of the forewing does not show the extended black spots which Moore mentions in glaphyra and 
which are distinct in my examples from West Mindanao. 
I. vitrea is unquestionably the most beautiful of all the species of Ideopsis and not only occurs on 
all parts of Celebes but also extends to the Moluccas and western Dutch New Guinea. But singularly it 
is not found on Bangkai and the Sula Islands, where it is replaced by a much smaller, entirely different- 
species. — - vitrea Bla7ich., the name-type, inhabits North Celebes, where it is not rare both in the Mina- vitrea. 
hassa and at Toli-Toli and forms one of the ornaments of the woods with its slow flight and the magni¬ 
ficent yellow border of its hindwing as well as by its abundance. The $ has more rounded wings and on 
the forewing also two complete rows of yellow patches before the distal margin. The black band of the 
hindwing is sometimes only indicated and also in the BS much narrower than in the figure, which is 
drawn from a B from South Celebes, a form which is here introduced as arachosia subsp. nov. The median aracliosia. 
band of the bindwing in the $$ is broad from the apex to the lower median vein, whilst in vitrea be¬ 
tween the middle and lower median veins it is usually more streak-like or is altogether so little developed 
that it may be regarded more as a widening of the blackish dusting on the vein. Also beneath the distal 
margin of arachosia is much broader, the yellow ornamental band correspondingly narrower and the yel¬ 
lowish submarginal dots more indistinct. The species is to be met with all the year round at the waterfall 
of Maros. — chloris Fldr. (76 b), described from Batjan and Halmaheira, shows all the white patches of chloris. 
vitrea yellow-coloured. The submarginal half-band of the hindwing begins broad at the apex and ends at 
the upper median. The subterminal patches on the underside of both wings and sometimes even the sub¬ 
marginal spots of the forewing in the $$ are white and contrast vividly with the sometimes lighter, some¬ 
times darker yellow intramedian areas of the proximal parts of the wings. Cell of the hindwing sometimes 
with brown fork-mark. • —- neleus Fruhst. differs from chloris in the brown instead of black ground- neleus. 
colour of both wings. The hyaline patches are dull and darker yellow. All the submarginal dots smaller 
and yellowish, instead of pure white. The first two transcellular yellow spots broader. The brown-black 
distal border encroaches on the yellow discal band with narrower but more pointed and longer wedge- 
spots. The blackish apical spot of the hindwing is broader than in chloris, the first three submarginal 
spots are smaller and strongly incised. The forewing more rounded, the whole build smaller than in 
chloris. neleus must be very local on Buru, as only $$ are yet known and Doherty, who collected for 
a long time on the island, did not meet with it at all. — obiana Fruhst. (76 c), from Obi, again approxim- obiana. 
ates decidedly more to vitrea, as the yellow-colour of both wings is lighter and in the $ the middle of 
the wing is white, though not transparent. The yellow areas in both sexes are moreover much more 
extended and the posterior half of the cell on the forewing not black, but likewise a beautiful light yellow. 
The yellow or whitish submarginal wedge-spots on the underside of the forewing in the $$ are only 
separated from the median area by small brown lunules, cell of the hindwing without any trace of a fork- 
mark. Not rare. — arfakensis Fruhst. has the cell of the forewing completely transparent and the median arfakensis. 
area vitreous, while the yellowish submarginal patches are especially strong. Only the submedian part of 
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