HABITAT: New York. _Upper Side._ Antennæ thread-like, of a reddish brown. The tongue curled spirally. Head and thorax ash colour. Anterior wings the same, whereon are several faint marks of a light sand colour. Close to the anterior margin, about a third from the tips, is a black mark, resembling an I of the German text characters. Posterior wings silvery white, with a small, faint, light, sandy border, and a small oblong brown discoidal spot. _Under Side._ Anterior wings silvery white, with a faint indistinct dark brown border running along the external margin, and two dark marks opposite the German text character. Posterior wings silvery white; the oblong brown spots are here plainly seen as on the upper side. PLATE XIX. [Illustration] PAPILIO PALAMEDES. Plate XIX. fig. 1. 2. ORDER: Lepidoptera. SECTION: Diurna. FAMILY: Papilionidæ, _Leach_. GENUS. PAPILIO, _Auct._ PAPILIO PALAMEDES. Alis dentatis nigris, fasciâ maculari maculisque marginalibus flavis; posticis caudatis, his subtùs ad basin vittâ albâ transversâ rectâ lunulisque rufis. (Expans. Alar. 5 unc.) SYN. Papilio (Eq. Achiv.) Palamedes, _Drury, App. v._ 2. (1773). _Cramer, pl._ 93. _fig._ A. B. Pap. (Eq. Ach.) Calchas, _Fabr. Syst. Ent. p._ 453. _No._ 44. (1775). _Ent. Syst._ 3. 1. _p._ 30. _No._ 90. _Herbst. Pap. tab._ 42. _Boisduval, Hist. Nat. Lep._ 1. 337. _No._ 178. _Bdv. et Leconte, Icon. Lep. Amer. Sept. pl._ 5. HABITAT: Carolina (_Drury_). Georgia, Virginia (_Bdv._). _Upper Side._ Head, back, and abdomen dark brown; the latter striped on the sides with yellow. Two yellow lines, beginning at the palpi, encircle the eyes, and, running along the shoulders, end at the base of the inferior wings. Anterior wings brownish black; the external margin with small yellow crescents, above which are nine yellow round spots. Above this is another irregular row of yellow angular spots. Posterior wings brownish black, each with a tail. Above it are six yellow spots, reaching from the anal to the upper corner, with five small blue spots above them, above which a yellow irregular bar runs across the middle of the wing, having a black spot, whose upper edge is verged with blue, placed at the anal angle, with a small tinge of orange above and below it.