Sir G. H. Kenrick on Butterflies from Dutch New Guinea. 17 
Mount Koberai, at an elevation of about 8000 ft., but 
others were subsequently taken at 6000 ft., or even lower. 
Ornithoptera rothschildi, n. sp. 
(Plate Vio. VI, 2.) 
Male: Of the general type of O. priamus, but fore-wing narrower 
and hind-wing more oval. Upper-side : fore-wing black, with scattered 
green scales distributed in long ill-defined patches. Three of these 
are above the subcostal nervure between the end of the cell and the 
apex. Three are below the cell and between nervures 1 and 2, 2 and 
3, and 3 and 4, but they do not reach the termen. There is also a 
narrow band along the inner margin. Hind-wing black ; the disc 
covered by a large patch of gold, terminating in a series of points 
between the nervures, which are black. Across this patch of gold 
extends a tapering green band in which are 5 ill-defined black spots. 
Fold black. The under-side in both wings similar to the upper-side, 
but the green is more golden and better defined in patches and spots 
in the fore-wing. Exp. 154 m-m. 
Female: Resembles the same sex in O. priamus, paradisea, and 
tithonus, but may be distinguished from all three by the following 
characters— 
1. The abdomen, which is hairy all over and heavily ringed with 
black, especially above. 
2. The absence of white markings in the cell of the fore-wing. 
3. The presence of 7 black spots on the hind-wing instead of 6 as 
in tithonus, the seventh being nearer the costa. 
4, The under-side of the hind-wing being much less white than in 
any of the others. In the hind-wing the black patch at the base 
entirely covers the cell itself, but on either side it does not extend 
much beyond the middle of the cell. Exp. 190 mm. 
Dr. K. Jordan, who has kindly compared these insects 
with the specimens of O. chimaera at Tring, writes as 
follows— 
“The chief differences in the male are as follows: in 
0. rothschildi the green colour at apex of fore-wing is 
reduced, as is also the case with the cell streak; hind angle of 
fore-wing more rounded off, the whole being narrower, less 
triangular; the black interspace between central green 
area and green hind-marginal streak smaller on hind-wing, 
which is less elongated; black margins very much broader, 
the black spots much nearer the cell, hardly any green 
at outer edge of golden area; the green area which 
TRANS. ENT. SOC. LOND. 1911.—PART I. (MAY) C 
