148 THE MALAYAN PAPILIONID^ 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 (Linnaeus). 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 



