Publ. 15. V. 1912. 
STIBOCHIONA. By H. Fruiistorfer. 
569 
The under surface of the f. w. is adorned in the apical area with two pretty large ocelli and a broad, 
pale violet oblicpie band, on the h. w. with a pale violet submarginal band and five large ocelli, the upper¬ 
most of which is red-brown. In $ the transverse band on the f. w. is much narrower, paler yellow, more 
deeply excavated and on the under surface white; the ocelli at the apex larger than in martini just as in 
Expanse, S 80 mm, $72 mm.— petronia Fruhst. (115e) takes the place of t&luana in the low plains of northern petronia. 
Borneo. Much smaller than the preceding, with narrower yellowish bands on the f. w. The ocelli on h. w. 
are inferior in size to those found in specimens from Kina-Balu and south-eastern Borneo. The median band 
beneath is broader than in baluana. — Of martini Iionr. I only have one $ from Banjermasin (low-lands), martini. 
with a very narrow white band and on the under side of the h. w. five ocelli. It is a composite form based 
on specimens from south-eastern Borneo (type) and north-eastern Sumatra. The latter, although first described 
as endamia Sm ., always passes in collections for martini. 
Genus; Stibochiona Btlr. 
Of this genus which comprises only three species, the earlier stages are no more known than of Amnosia 
from which Stibochiona considerably differs in structure. Doherty laid great stress upon the ciliated eyes, 
which however are found only in the continental but not in the two insular species. Besides possessing 
some minor marks of distinction, Stibochiona may be told from Hypolimnas by the fact that only one 
subcostal nervule branches off before the end of the cell, whereas the second arises immediately beyond 
it and the third leaves the main vein about half Way between the 2. and 4. nervules. Only in Euripus and 
Hestina it also happens that the 2. subcostal branches off beyond the end of the cell; but the distance is greater 
and the cell open, whereas in Stibochiona it is closed by very fine tubular veins, analogous to Amnosia. The 
other characteristics of Stibochiona are the large curved middle discocellular and the nearly equally long, al¬ 
most straight lower discocellular in the f. w. which joins the median at the origin of the 2. median nervule 
and thereby closes the relatively short cell. Also in the h. w. the cell is closed (as in Amnosia), the precostal 
single, ascending in a straight line, only slightly curved at the end towards the subcostal. In $ the fore 
feet are thickly covered with hair, tibia and tarsus of equal length, somewhat shorter than the femur. Bingham 
placed Stibochiona next to Dichorragia but removed it (in opposition to Moore) from the Euthaliidi. These 
butterflies inhabit the Submontane Region, being in the Macromalayan Islands always found together 
with Amnosia decora ; but unlike the latter they are not limited to those islands, but range along the sou¬ 
thern slope of the Himalayas as far as Kulu, Kashmere and western China. 
S. nicea originally described from Nepal, is chiefly found in the eastern Himalayas, growing more 
scarce towards the west; from Cashmere I only know one <$) in Sikkim, Assam and locally also in Tonkin it 
is quite abundant, though not at all common. InMassuri it ascends to 7000 ft., in Sikkim to about 5000 ft. 
In Tonkin I observed the imagines even on rainy days, flying close to the ground amidst the bushes that 
border the road-sicle. They fly rather rapidly but are easy to catch, as they frequently alight on the under¬ 
side of the leaves. We know two local forms: nicea Gray (Vol. 1, p. 188, pi. 52 a) occurring from 1 ashmere nicea. 
to Tonkin and through western China (Leech), is represented in both sexes by two seasonal forms, a 
larger one with dark blue bands on the h. w. (Vol. I, pi. 52 a) and the smaller peculiar to the dry period. H. w. 
as well as the submarginal area of the f. w. traversed by light green bands (viridicans form. nov.). In Ten- viridicans. 
asserim, especially on the Karen-Hills, we find during March the form subucula Fruhst. (115 e), with enlarged subucula. 
white punctate spots on the f. w. and a compact, pure white distal border on the h. w. extending as far 
as the black dots; this border which is also on the under surface more than twice as broad as in specimens 
from Assam, is only interrupted by the black veins which divide it into square patches. Of the $ I have 
both the blue form and the one marked with green represented in our figure, which was taken in May, at the 
end of the dry-season, near Tandong in the Karen-Hills at an elevation of ca. 3800 ft. 
S. coresia breaks up into three insular varieties among which rothschildi Fruhst. (115 d) deviates rothschildi. 
most widely from the first described subspecies in having the outer half of the h. w. above violet instead 
of blue. The resembles that of coresia in the presence of an oblique subapical band which is however brown¬ 
ish, not white. As in S. kannegieteri, the marginal dots as well as the markings at the anal angle are 
obsolete. The two bands traversing the cell which are blue in coresia have a brownish lustre. On the h. w. 
the anal band lacks the white border, but the black submarginal lunules are much more distinct than in coresia. 
$: The brown ground-colour is much lighter; the anal band is not pale blue as in coresia. but glossy reddish- 
violet and bordered by a distinct brown-black undulate marginal stripe enclosing 4-—5 whitish lunular spots. 
IX 
72 
