PAPILIO EGÆA EGÆA’S BUTTERFLY. ORDER LEPIDOPTERA. GENERIC CHARACTER. Antennæ thicker towards the tip, and generally terminating in a knob: wings erect when at rest. Fly by day. * NYMPH. GEMM. SPECIFIC CHARACTER AND SYNONYMS. Wings indented: above black, with a common white band: posterior pair with two ocellar spots beneath. PAPILIO EGÆA: alis dentatis supra nigris: fascia communi alba, posticis subtus ocellis duobus. _Fabr. Syst. Ent. 496. 231._—_Spec. Ins. T. 2. 79. 351._—_Ent. Syst. T. 3. p. 1. 100. 309._ Parvus. Alæ omnes supra nigræ, basi cyaneo nitentes, in medio fascia communi anteriorum interrupta, alba. Maculæ duæ parvæ, albæ versus apicem alæ anterioris; subtus anticæ fuscæ maculis albis lunulaque media, ferruginea. Posticæ basi fasciis albis fuscisque alternis disco niveo, macula biloba, fusca, et in hac ocelli duo atri, iride ferruginea pupillaque magna, cyanea. Margo posticus flavescens. _Fabr. Ent. Syst. T. 3. p. 1. 309._ * * * * * We have much pleasure in assuring our readers that the present figures of this very elegant and rare Papilio, are the first that have appeared in illustration of the species. This becomes the more incumbent to observe, because those figures afford an elucidation of some moment at least, to the writings of an Entomologist of acknowledged eminence, the late Professor Fabricius: he had described the species in his several works as above adverted to, under the name of Papilio Egæa, but these descriptions have remained before the learned world for nearly half a century without any pictorial illustration. The existence of such a species is therefore well known, but from description only, and this circumstance, it is presumed, will tend to confer more real interest upon the figures now produced, than if it had been entirely undescribed, because, heretofore, a deficiency has been in this respect perceived; and that deficiency is now supplied by the figures submitted to our readers in the annexed plate. The first description of this species, as already intimated, to be found among authors, is that given by Fabricius in his _Systematica Entomologia_: subsequently it appeared in his work entitled _Species Insectorum_, and lastly in his _Entomologia Systematica_, as inserted among our synonyms. It is these authorities that have supplied Gmelin with the description of the species as we find introduced by him, into the last edition of the Linnæan Systema Naturæ.