OF THE MALAYAN REGION. 53 
The red spots and lunules remain ; but in some specimens only those in the anal region 
are visible, and these have a very close resemblance to P. Antiphus. This is also a local 
form, not occurring, I believe, in company with the last. 
Hab. Sumatra, Lombock (Wall.). 
Ath form of female (P. Melanides, De Haan, Verh. Nat. Gesch. t. 8. f. 3). 
I consider this to be an isolated modification of P. Theseus, Cr., peculiar to Borneo. 
It possesses all the characteristics of a female of this species. 
Hab. Banjarmassing (Borneo) (Leyden Museum). 
N.B. The 2nd, 3rd, and 4th forms of 9 are all tailed, as in the females of P. Pammon. 
64. PAPILIO ALPHENOR, Cramer. 
P. Alphenor, Cr. Pap. Ex. t. 90. f. B( 9) ; Boisd. Sp. Gén. Lép. p. 274 (8, 9); P. Ledebouria, Eschsch. 
Voy. Kotz. t. 3. f. 7. 
This is very closely allied to P. Theseus. The male is larger, has the caudal tooth 
scarcely perceptible, and on the under side has white instead of red marginal lunules. 
The female is tailed, much larger than P. Theseus 9 form 2nd, from which it further 
differs by the white patch on the hind wings having the red markings blended with it, 
and more prominent. 
Hab. Celebes, Bouru, Amboyna, Ceram (Wall.), Philippine Islands. 
1st form of female (P. Ledebouria, Eschsch.). | 
Like the male, but with a brown tinge and an obscure anal lunule. This has been 
noticed only in the Philippine Islands. 
2nd form of female (P. Alphenor, Cr.). 
Distribution the same as the male. 
3rd form. of female (P. Elyros, G. R. Gray, B. M. List Pap. p. 26). 
The white patch on the lower wings reduced to a small spot, or quite absent. "There 
are many varieties of this, showing very instructively how such isolated forms of female 
as occur in the two preceding species may have been produced by simple variation fol- 
lowed by a ** natural selection ” of the forms best adapted to special conditions. 
Hab. Philippine Islands (B. M.) 
65. Parto Nicanor, Felder, * Voyage of the Novara,’ pl... . f. c, d 
Male. Upper side :—like P. Alphenor & ; but the band of white spots is broader and 
more regular, and there is a row of four white submarginal lunules. 
Under side as in P. Alphenor ; but the marginal spots of the upper wings, and the 
submarginal lunules of the lower wings, are larger and more distinct. 
Female quite tailless, like the male. Upper side :—like P. Alphenor 9; but the 
rufous anal spots are much smaller, not forming an ocellus at the anal angle, and they 
do not join the white central patch. 
Under side, differs from P. Alphenor in nearly the same manner as on the upper side. 
Hab, Batchian, Gilolo, Morty Island (Wall.). 
Remarks.—The absence of tails in the female, and the white submarginal lunules in the 
