_Remarks._—At Macassar I took only males of _P. Encelades_, and females of _P. Deucalion_ at the same spot (a half-dry river-bed), and therefore conjectured that they might be sexes of one species, although so unlike. Some years afterwards, however, I took at Menado a fine male of _P. Deucalion_, which only differs in its rather smaller size and brighter colouring. 92. PAPILIO IDÆOIDES, Hewitson. _P. Idæoides_, Hew. Ex. Butt. Pap. pl. 1. f. 2. _Hab._ Philippine Islands (♂) (_Brit. Mus._). _Remark._—This singular species must closely resemble on the wing _Hestia Leuconoë_, from the same islands. 93. PAPILIO DELESSERTII, Guérin. _P. Delessertii_, Guér.; Deless. Souvenirs, t. 17. _Hab._ Pulo Penang (_Hope Museum, Oxford_). _Remark._—This resembles the species of _Hestia_ and _Idæopsis_, from the same locality, and is intermediate in size. It has been confounded with the next. 94. PAPILIO DEHAANII, Wallace. _P. Laodocus_, De Haan, Verh. Nat. Gesch. t. 8. f. 5 (nec Fab.); _P. Melanides_, Erichs. Archiv für Natur. 1843 (nec De Haan, 1839). _Hab._ Malacca, Borneo (_Wall._), Java (_Leyden Mus._). _Remarks._—The Bornean specimens are rather larger, and have the yellow anal spot somewhat differently shaped. The two names which have been applied to this species having been preoccupied, I have named it after the first describer. 95. PAPILIO LEUCOTHOË, Westwood. _P. Leucothoë_, Westw. Arc. Ent. pl. 79. f. 3; _P. Xenocles_, var., Brit. Mus. List of Pap. _Hab._ Singapore, Malacca (_Wall._), N. India. 96. PAPILIO MACAREUS, Godart. _P. Macareus_, Godt. Enc. Méth. ix. pl. 76; Horsf. Desc. Cat. Lep. E. 1. C. pl. 5. f. 1; Boisd. Sp. Gén. Lép. p. 374. _P. striatus_, Zink. Beitr. Ins. Java, t. 14. f. 5. _Hab._ Malacca (_Wall._), Java (_Horsfield_), Borneo (_Leyden Mus._). This species closely resembles _Danais Aglaë_, Cr., found in the same islands. 97. PAPILIO STRATOCLES, Felder. _P. Stratocles_, Feld. Lép. Nov. Philipp, p. 2. _Hab._ Mindanao (Philippines). 98. PAPILIO THULE, n. s. Tab. VII. fig. 1 (♂). Form of _P. Macareus_, but smaller. Above:—brown-black, spotted and marked with greenish white; a row of spots near the outer margin of all the wings, and on the upper wings a second row between the first and the end of the cell, three or four others close to the cell, and 5–7 irregularly placed in the cell; the spot next the outer angle is double, and the two lower spots of the second row are continued indistinctly to the cell. The lower wings have a mark at the end of the cell, and five elongated spots radiating from it between the nervures. Beneath:—brown, with the spots all whiter and more distinct. Neck with four white points; abdomen dusky, with pale lines on the sides and beneath. Expanse of wings 3¾ inches. _Hab._ New Guinea (♂) (_Wall._). Variety or local form _a_.—Like the above, but with the discal spots of the lower wings united into a transverse band divided by fine nervures.