If the authors of the _Planches Coloriées_, will consult the Philosophical Magazine for July 1827, (one of the oldest and best of our scientific Journals), they will find that this, and most of the birds from Mexico, which they are now describing as _new_, were long ago named and characterized by us. Our list, indeed, of all those brought over by Mr. Bullock, was printed with the catalogue, in 1824, when one of the Authors was himself in England, and viewed the collection. * * * * * * [Illustration: CYNTILIA _Swainsonia_.] AMYNTHIA Swainsonia. ---- Family Papilionidæ. Sub-family Colianæ. CHARACTERS. _Antennæ_ graduating from the base to a lengthened, cylindrical truncated club; the terminal joint of which is naked and concave. _Head_ smooth, destitute of a fascicle of hairs between the antennæ. _Palpi_ as in _Colias_, the last joint inclining upwards. _Wings_ angulated, with concealed appendages. _Feet_ as in _Colias_. _Nob._ Type. _Col. Merula._ Auct. ---- SPECIFIC CHARACTER. _Wings above greenish white, anterior with a yellow disk, and a quadrangular black dot, encircled with orange: wings beneath obscurely lineated with green._ Colias Swainsonia. _Leach. M. S. S._ ---- We had the satisfaction of discovering this lovely Butterfly in the interior of Pernambuco, during our Brazilian researches in 1813. Although assiduously sought after, we never captured more than three specimens, and these were met with far distant from the coast: it must be either excessively rare, or very locally distributed. The colouring is peculiarly chaste and elegant; the ground is a pearly white, tinged with green, and relieved by clear yellow: in the female this latter colour is more diluted, and spreads nearly to the base of the anterior wings. This group appears to be the tropical representative of _Gonepteryx_; from which it is much more distinguished than _Eurymus_ is from _Colias_. The two European types are called by British collectors, Brimstones, and Clouded-yellows. Dr. Horsfield has judiciously removed _P. Glaucippe_ from _Pieris_ to _Colias_, to which (although an aberrant species,) it manifestly belongs. We should not be surprised if that insect leads to _Amynthia_ by means of _Amy. Leachiana_ (Pl. 6. of our first series), which will be seen, from the description, to exhibit many deviations from its conjenors: this however is a mere supposition, for we have not yet analized these groups. Independant of the characters here sketched, _Gonepteryx_ is distinctly separated from _Amynthia_, by the peculiar construction of the feet. The mistake of the printer, seen upon the plate, was discovered too late for correction. * * * * * * [Illustration: AMPULLARIA. Pl. 3. _A. fasciata._] AMPULLARIA fasciata. var. _Fasciated Apple Snail._ ---- Order, Phytophaga. Family, Ampullaridæ. _Guilding._ GENERIC CHARACTER.--See Guilding in Zool. Journ. No. 12, p. 538 ----