_Remarks._—The males of this fine species are not uncommon in Ceram, and in hot weather come down to the beach and settle on the wet sand. The females, however, are very rare; I obtained one in the mountainous forests of Ceram, and this is, I believe, the only fine and perfect specimen now in Europe. Expanse of male 5½–6½ inches, of female 7 inches. 76. PAPILIO AMPHITRION, Cramer. _P. Amphitrion_, Cr. Pap. Ex. t. 7 f. A, B; Boisd. Sp. Gén. Lép. p. 217. _Hab._ Celebes? _Remarks._—The habitat of this rare species is doubtful. Cramer says, “America;” Godart, “Amboyna;” but I believe its true locality will be found to be Celebes. It forms a transition to the next species. 77. PAPILIO EUCHENOR, Guérin. _P. Euchenor_, Guér. Voy. de la Coquille, t. 13. f. 3 (♂); _P. Axion_, Boisd. Sp. Gén. Lép. p. 46 (♂). _Female._—Similar to the male; but the markings are all of a dull ochre-yellow, and the second and third spots, reckoning from the inner margin of the upper wings, are almost entirely wanting. This sex is much rarer than the male. _Hab._ New Guinea, Aru Island, Ké Island (_Wall._). 78. PAPILIO GODARTII, Montrouzier. _P. Godartii_, Montr. Ann. Soc. d’Agric. de Lyon, 1856, p. 394. _Hab._ Woodlark Island. _Remark._—Closely allied to the last; perhaps a variation only. k. _Demolion_ group. 79. PAPILIO DEMOLION, Cramer. _P. Demolion_, Cr. Pap. Ex. t. 89. f. A, B; _P. Cresphontes_, Fabr.; Boisd. Sp. Gén. Lép. p. 220. _Hab._ Java, Borneo, Sumatra, Singapore (_Wall._), Moulmein (_Brit. Mus._). 80. PAPILIO GIGON, n. s. Tab. VII. fig. 6 (♀). “_P. Gigon_,” List of Papilionidæ in Brit. Mus. p. 27 (no description). Much larger than _P. Demolion_; costal margin of the fore wings very much arched from the base; tail proportionally shorter. Upper side:—markings as in _P. Demolion_, with the following differences. In the cell of the fore wings are four longitudinal curved greyish-yellow lines; the yellow band begins higher on the abdominal margin, and curves outward toward the tip, where the spots are obliquely elongate, and the three last distinctly notched; on the hind wings the lunulate spots are much deeper and are rather further from the margin, and the two spots at the outer angle (often obsolete in _P. Demolion_) are large and well marked. Under side:—the markings resemble those of _P. Demolion_, but are stronger; the band of silvery spots is much more sinuate, and possesses an additional lunule above the outer angle; a patch of ochre-yellow covers the lower margin of the cell, extending a little along the nervures which radiate from it. Abdomen blackish, with numerous stripes and spots of pale yellow. Expanse of wings 4¾ to 5⅓ inches. _Hab._ Celebes, Sulla Island (_Wall._). _Remark._—This was regarded by Boisduval as a large variety of _P. Demolion_ (see Sp. Gén. Lép. p. 221); but it offers remarkable differences both in form and markings.