196 THE AUSTRALIAN NATURALIST, 
reason of their being treated as distinct species by their 
describer, Cramer; then we have our species P. «geus which, 
as I have stated, ranges in Australia from Cape York (where 
only in Australia the second form of female rarely occurs) to 
Sydney, and much less commonly to Victoria, where it has 
been taken in orchards in the northern portion of that State. 
On Darnley Island the New Guinea form P. ormenus occurs. 
This form was made known to science by the early HKrench 
voyagers, and is a truly remarkable species. The male, which 
in its normal form is closely related to P. egeus, has also two 
other forms, the most remarkable being that in which the 
subapical band of the forewing is quite absent, and the other in 
‘which the spots composing this band are very small. All 
these forms are taken in New Guinea, while the form with the 
small spots on the forewing appears to be the only one found 
in the Key Islands. 
In the female we have distinct trimorphorism, the commoner 
form, especially on the mainland, is that which corresponds to 
the usual Australian female. However, a very white form 
also occurs ; this was given the name amanga by Boisduval, 
and onesimus by Hewitson, under the supposition that they 
were dealing with a distinct species. This form occurs on the 
mainland of New Guinea, but appears to be more plentiful in 
the adjacent islands, several of my specimens coming from the 
Woodlark Islands. 
This white form of female presents some striking resemblance 
to the only female form of Papilio tydeus from the Northern 
Moluccas. The white form of the New Guinea female is said 
to be a mimic of the genus Tenaris, a group of large slow-flying 
Morphide that are extremely common in New Guinea. At 
first this seems a very tempting theory, but one of the chief 
reasons against it is that where such mimicry occurs the 
mimicing species is usually much rarer than the mimicked. 
However, this light female form occurs as one of the two forms 
of P. xegeus on Cape York, though rarely, while the genus 
Tenarts is so far not known to occur here. It can scarcely 
have been overlooked, for during the last three or four years 
several keen collectors have spent a considerable time on the 
Cape York pensinsula, and such a striking and easily caught 
group, which would be quite strange to most of these collectors, 
could hardly have been missed. 
The third and much rarer form is that which approaches 
much nearer to the male in pattern. The forewing is marked 
with a white subapical bar like the male, and the large white 
area of the hindwing is only found on the upperside. I have 
this form from the Woodlark Islands. and Rothschild in 1895 
supposed it to be confinrd to Waigiou, though the Tring 
Museum has probably received it from the New Guinea main- 
sand since that date. In New Britain our present material 
