Lepidoptera from Sumatra. 381 
large. Primaries below with the costal border blackish, the 
subcostal spots of the first two series dark grey, but the other 
spots of these series obsolete, the terminal spots dark grey ; 
secondaries with a black line along the centre of the costal 
margin: body below ochreous dotted with black. Hxpanse 
of wings 50 millimetres. 
One example. 
This singular species has the general aspect of some of the 
Zerenidx, but agrees in neuration with Zripheromera. 
Euschemide. 
5. Milionia Guentheri, sp. n. 
Wings velvety black, shot with ultramarine blue towards 
the base of the primaries, and almost to the outer margin of 
the secondaries on the upper surface; the basal third of pri- 
maries and the interno-median area of secondaries with broad 
diffused shining emerald-green streaks along the veins, these 
streaks, however, changing to ultramarine blue in certain 
lights: primaries crossed before the middle from costal 
margin to inner margin just before the external angle by a 
vivid scarlet oblique band (almost as in MZ. fulgida of Java) : 
secondaries crossed by a discal scarlet band, acutely angulated 
upon the radial yein, trisinuated externally between the angu- 
lation and the anal angle of the wing, the inferior half shot 
with magenta, enclosing a small black spot at the anal angle ; 
a marginal series of depressed triangular spots and the fringe 
bright orange-red ; a series of slaty-blue spots upon the fringe 
at the extremities of the nervures; body brilliant metallic 
_ emerald-green with blue shades in certain lights; anal tuft 
tipped with stramineous; antenne, palpi, and inferior surface 
of legs dark fuliginous brown. Wings below less brilliant in 
colouring than above, the band on the wings of a more orange- 
red colour; primaries with the external and internal areas 
somewhat greyish ; secondaries with an additional basicostal 
emerald-green streak. Hxpanse of wings 65 millimetres. 
Two specimens. 
Ihave named this superbly beautiful moth in honour of 
Dr. Albert Giinther, Keeper of the Zoological Department, as 
a slight acknowledgment of the deep interest which he has 
always manifested in the Lepidoptera. Its natural position 
is doubtless between M. fulgens from Java and M. basalis*® 
from the same island. 
* Speaking of M. basalis, it may be well to note that its representa- 
tive from Malacca has the orange bands double the width of those of 
the Javan species; it should therefore be regarded as distinct, and 
may take the name of Milonia latifasciata (expanse 57 millim.). 
