This is the only species among those I have united under the genus _Licinia_, which has any shade of red mixed in the colouring, all the others being variegated only with white, yellow, and black. It is a native of Brazil, and according to Godart of Guyana and the Antilles: though not common, it is sometimes frequent in local situations, preferring the borders of deep forests, and flying very slowly. I had the means of fully ascertaining the two sexes, of which the two upper figures are of the male, and the lower one the female. There can be no doubt the latter is the _Pieris Amphione_, so admirably described by M. Godart, who, however, makes no mention of the black marginal spots on the under side of the posterior wings, represented in Cramer's figure, which may therefore be a variety. More difficulty, however, exists in ascertaining if the male is distinct from _P. Laia_, of Godart: the figures of Cramer, in general, are so inaccurate, as always to excite a doubt in cases of nice discrimination; Godart's description, nevertheless, perfectly agrees with Cramer's figure: if it was, therefore, drawn up from the insect itself, there can be little doubt that _Laia_ is distinct from _Amphione_; if, on the other hand, M. Godart made his description only from Cramer's figure, the question remains in its original uncertainty. The club of the antennae is white, tipt with pale brown. The under side of the female very closely resembles the upper, excepting that the black stripe on the lower wings is broken; and there are irregular blotches of white at the tips of both wings, but no marginal spots, as represented by Cramer. It will be found that _Licinia_ is the connecting genus between those of _Danais_ and _Pieris_, of Latreille, and that the transition between the last of these and _Colias_ is strongly marked by that of Terias, (_Zool. Ill. pl._ 22). What with the inaccuracy of figures, and the almost universal neglect with which the most eminent entomologists have passed over this beautiful order, the natural arrangement and affinities of the _Lepidoptera_ still remain in the greatest obscurity; and it is recommended to those who may object to the additional generic distinctions I have made, to examine, in the first instance, the relative validity they bear in essential character to the innumerable genera that are continually created in the _Coleoptera_, _Hymenoptera_, and _Diptera_. * * * * * Pl. 92 [Illustration] PAPILIO, _Butterfly_ * * * * * GENERIC CHARACTER. _Antennae graciles, clavis elongatis, obtusis, sub-arcuatis, raro compressis. Palpi brevissimi, reflexi, remoti, linguae basin vix obtegentes, articulo ultimo obtuso, minimo. Pedes antici longi, articulo secundo infra gibbo._ SECTIONES. I. Graeci. _Pectore maculis sanguineis carente._ _a._ Ecaudati, _alis inferioribus elongatis, basi angusta_.