_Hab._ Moluccas (_Wall._). _Remarks._—My specimen from Ceram is of a greener tinge, and the colour extends a little beyond the end of the discoidal cell; that from Batchian is smaller, of a bluer tinge, and the colour of less extent. The species seems to be very rare. 38. PAPILIO MACEDON, Wallace. Tab. VI. fig. 2 (♂). _P. Peranthus_, var. B., Boisd. Sp. Gén. Lép. p. 204. Boisduval’s description sufficiently shows the remarkable differences of form, size, and colouring which this species presents, compared with that of which he considers it a variety. The female agrees with the male, except that the colours are a little less brilliant, and the cottony patches of the fore wings are absent. Expanse of wings, ♂, 5 inches; ♀, 5–6 inches. _Hab._ Macassar, Menado (Celebes) (_Wall._). 39. PAPILIO BRAMA, Guérin. _P. Brama_, Guér. Rev. Zool. 1840, p. 43, t. 1. f. 3, 4. _P. Palinurus_, De Haan, Verh. Nat. Gesch. pp. 5, 29. _Hab._ Malacca, Sumatra (_Wall._). 40. PAPILIO DÆDALUS, Felder. _P. Dædalus_, Feld. Lep. Nov. Philipp. p. 2. _Hab._ Luzon (Philippine Islands). 41. PAPILIO BLUMEI, Boisduval. Tab. VI. fig. 4 (♂). _P. Blumei_, Boisd. Sp. Gén. Lép. p. 206. _Hab._ Menado (Celebes) (_Wall._). “Amboyna,” _Bd._, error of locality. _Remark._—This very fine species comes nearest to the last, but is of much larger size, and is conspicuous by its brilliantly coloured tails. 42. PAPILIO ARJUNA, Horsfield. _P. Arjuna_, Horsf. Cat. Lep. E. I. Comp. pl. 1. f. 14; Boisd. Sp. Gén. Lép. p. 209. _P. Arjuna_, var. _a._, Brit. Mus. Cat. of Papilionidæ, p. 17. _Hab._ Java, Borneo, Sumatra (_Wall._). The Bornean form differs from that of Java by its larger size, and on the under surface by the three middle lunules being formed of a violet line only, with scarcely a trace of red beneath it, and by the orange-red lunules both at the anal and outer angles being divided (not margined) by a violet line. The scales sprinkled at the base of the lower wings are white and blue, and are neither so dense nor do they extend so far as the yellowish scales of the Java specimens. In all these particulars the Sumatra specimens are somewhat intermediate, but approach most to those of Borneo. This is one of the examples which show the isolation of Java, notwithstanding its proximity to Sumatra. f. _Memnon_ group. (N.B. The _Protenor_ group of India is intermediate between this and the last group.) 43. PAPILIO MEMNON, Linnæus. Tab. I. figs. 1 (♂), 2, 3, 4 (♀s). ♂, _P. Memnon_, L., Cram. Pap. Ex. t. 91. f. C (♂); Boisd. Sp. Gén. Lép. p. 192. ♀, 1st dimorphic form, _P. Anceus_, Cr. Pap. Ex. t. 222. f. A, B. ? _P. Laomedon_, Cr. Pap. Ex. t. 50. f. A, B; De Haan, Verh. Nat. Gesch. p. 24, t. 3. f. 2. ♀, 2nd dimorphic form, _P. Achates_, Cr. Pap. Ex. t. 243. A. _Hab._ Java, Sumatra (_Wall._).