148 THE MALAYAN PAPILIONIDE AS 
replaced by local forms or by closely allied species, occurs 
in every island of the Archipelago) has convinced me 
of the correctness of this statement; for in every place 
where a male allied to P. Pammon is found, a female 
resembling P. Polytes also occurs, and sometimes, 
though less frequently than on the continent, another 
female closely resembling the male: while not only has 
no male specimen of P. Polytes yet been discovered, 
but the female (Polytes) has never yet been found in 
localities to which the male (Pammon) does not extend. 
In this case, as in the last, distinct species, local forms, 
and dimorphic specimens, have been confounded under 
the common appellation of varieties. 
But, besides the true P. Polytes, there are several 
allied forms of females to be considered, namely, P. 
Theseus (Cramer), P. Melanides (De Haan), P. Elyros 
(G. R. Gray), and P. Romulus (Linneus). The dark 
female figured by Cramer as P. Theseus seems to be 
the common and perhaps the only form in Sumatra, 
whereas in Java, Borneo, and Timor, along with males 
quite identical with those of Sumatra, occur females, 
of the Polytes form, although a single specimen of 
the true P. Theseus taken at Lombock would seem to 
show that the two forms do occur together. In the 
allied species found in the Philippine Islands (P. Al- 
phenor, Cramer—P. Ledebouria, Eschscholtz, the 
female of which is P. Elyros, G. R. Gray,) forms 
corresponding to these extremes occur, along with a 
number of intermediate varieties, as shown by a fine 
series in the British Museum. We Have here an 
