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_. Cramer's being a _Urania_ of Fabricius and Latrielle, 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 in the frontal hairs: this also being a typical distinction of the Latrellian _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 nuration 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 remarkably 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. * * * * * * [Illustration: LYCÆNA _Dispar_.] LYCÆNA dispar. _The Large British Copper._ ---- Family Erycinidæ. Sub-family Theclinæ. Sw. Genus Polyommatus. GENERIC CHARACTER. Wings (typically) obtuse, rounded; anterior having the external margin shorter than the posterior: posterior wings entire or nearly so: destitute both of filiform caudal appendages, and of metallic anal spots. _Nob._ SUB-GENERIC CHARACTER. _Posterior wings obsoletely dentated, particularly at the anal angle: club of the antennæ short, spatulate; palpi hairy, the last joint lengthened, acute, naked, obliquely vertical._ _Type._ L. Phlæas. ---- SPECIFIC CHARACTER. _Wings coppery: the male with two discoid black dots on the anterior, and one on the posterior wings: club of the antennæ elongated and fusiform._ (_Aberrant._) Papilio Hippothoë. Lewen's Pap. pl. 40. Pap. dispar. Haworth. Lep. Brit. p. 40. Stevens. Brit. Ent. 1. p. 82. Pl. 3 ----