_P. Antiphus_ ♀, De Haan, Verh. Nat. Gesch. p. 49, t. 8. f. 2; Brit. Mus. List. Pap. p. 12. _P. Polyphontes_ ♀, De Haan, Verh. Nat. Gesch. t. 8. f. 4. _P. Melanides_, De Haan, Verh. Nat. Gesch. t. 8. f. 3 (♀). Male like _P. Pammon_ ♂, but smaller, and the tail always reduced to a projecting tooth. _Hab._ Java, Sumatra, Borneo, Lombock, Timor (_Wall._). Local form _a_. Much larger; more falcate wings; a broad short tail. _Hab._ Macassar (_Wall._) _1st form_ of female. Tab. II. fig. 2. Like the male, but with a very slightly marked blue and red ocellus at the anal angle. This is very rare in the islands. I found one specimen only in Timor, which I took “_in copulâ_” with a male almost exactly resembling it. _2nd form_ of female (_P. Polyphontes_ ♀, De Haan). Tab. II. fig. 4. Like the 2nd form of _P. Pammon_ ♀; but has the pale portion of the anterior wing of a much lighter colour, and not extending so far towards the base of the wing; the white spot on the hind wings is more rounded, and has always a rather large portion within the cell. This form is to some extent local, not existing, I believe, in Sumatra, where it is replaced by the next. _Hab._ Borneo, Java, Timor (_Wall._). _3rd form_ of female (_P. Theseus_, Cr.; _P. Antiphus_ ♀, De Haan). Tab. II. fig. 7. This is well characterized by the entire absence of the white spot from the hind wings. 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._). _4th 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 ♀ are all tailed, as in the females of _P. Pammon_. 64. PAPILIO ALPHENOR, Cramer. _P. Alphenor_, Cr. Pap. Ex. t. 90. f. B (♀); Boisd. Sp. Gén. Lép. p. 274 (♂, ♀); _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_ ♀ 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).