“The error of Cramer regarding _Rhipheus_ has already been rectified. It will now be demonstrated that not only are the two insects distinct as _species_, but that they actually belong to different _genera_; Cramers being a _Urania_ of Fabricius and Latreille, while Drury’s is a _Papilio_ of the same authors. This is proved by the figures, and confirmed by the following words of Drury :--‘The antennæ are black, and knobbed at their extremities,’ in other words, clavate; while the palpi, as expressed in the figure, are so small as not to project beyond the head, where they lie hid among the frontal hairs; this also being a typical distinction of the Latreillian _Papiliones_. The figures in Drury’s work were all drawn and engraved by Moses Harris, well known as one of the most accurate artists that ever lived; as a remarkable proof of this, we find that he has not failed to delineate that peculiar neuration of the anterior wings which belongs only to the types of _Leilus_. A closer affinity therefore between _Papilio_ and _Leilus_ cannot possibly be imagined; while its remarkable hairy front points out its analogy, as an aberrant type in its own genus, to _Chlorisses_ among insects, and _Dasycephala_ among birds. So true it is that the natural system ‘illuminates with a flood of light’ every supposed anomaly, and reconciles facts apparently the most inexplicable[39].” FINIS. FOOTNOTES: [Footnote 1: See his _eloge_ on Lamarck, of which a translation will be found in the Thirty-ninth Number of the Edinburgh New Philosophical Journal. To this memoir we have been chiefly indebted for the particulars of Lamarck’s life.] [Footnote 2: Memoir on the substance of fire, considered as a chemical agent in analysis.--_Journal de Physique, Floreal, An._ vii.] [Footnote 3: Memoir on the substance of sound.--_Journal de Physique, 16 & 26 Brumaire, An._ vii.] [Footnote 4: _Animaux sans vertébres_, vol. i. p. 188, 189.] [Footnote 5: _Animaux sans Vertébres_, vol. i. p. 197, 198.] [Footnote 6: _Ib._ p. 199.] [Footnote 7: Ann. du Museum d’Hist. Nat., tom. i. p. 234.] [Footnote 8: Lyell’s Principles of Geology, ii. p. 31.] [Footnote 9: Principles of Geology, ii. p. 8.] [Footnote 10: This subject will be found to be discussed at considerable length, and in a very satisfactory manner, in the second volume of Mr. Lyell’s Principles of Geology, p. 1-65.] [Footnote 11: _Animaux sans Vertébres_, i. p. 260.] [Footnote 12: _Ibid._ 258, _N. Dict. d’Hist. Nat._ xvi. Art. _Intelligence_.] [Footnote 13: _Kirby’s Bridge. Treat. Intro._ p. xxxii.] [Footnote 14: N. Dict. d’Hist. Nat. xxii. Art. _Nature_, 377; _Anim. sans Vert._ i. p. 317.] [Footnote 15: _Anim. sans Vert._ i. p. 316.] [Footnote 16: _Anim. sans Vert._, vol. i. 322.] [Footnote 17: On the Influence of the Moon on the Earth’s Atmosphere; _Journal de Physique_, Prairial, an. vi. Most of Lamarck’s other essays on Meteorology will be found in the periodical just named.]