The next bird in the collection has been arranged by Dr. Latham in the Linnean genus Gracula, but appears to me to agree in no respect with that genus, as originally characterized by Linnaeus, much less with it as it has been modified by modern ornithologists. Whether we consider, according to M. Cuvier,* that the type of Gracula is the Paradisea tristis, Linn., or, according to M. Temminck, that it is the Gracula religiosa, Linn.,** in which latter opinion I feel rather disposed to acquiesce, my bird agrees with the group in none of its essential characters. In fact, the Linnean genus Oriolus is that to which it bears the closest resemblance in its general appearance; particularly by a similar disposition of its colours, and in the structure of its bill, wings, and legs. I would at once refer it to that genus, but that I have some reason to think that it belongs to the meliphagous birds, which are so abundant in New Holland, and which have been observed to assume the appearance of almost every group in the Insessores. Indeed, some birds of that country, which have been decided to be meliphagous, such as the Meliphaga cyanops, Lewin,*** [Graculine Honey-eater, Lath. Syn. 4 166. sp. Ed. 2da.] and others allied to it, and which differ little from the bird before us, have so many external relations with the Orioles, that they probably would be found to arrange themselves in the same family with them, were it not for the totally different structure of their tongue, and the consequent difference in their habits of life. Of the tongue, or mode of feeding of the bird at present before us, I can myself say nothing decisively, not having had leisure or opportunity, as I have already observed, of attending to the more interesting details of Natural History during the expedition. But general opinion places this bird among the groups that feed by suction; and as I have a second species hitherto undescribed, which is closely allied to it, I prefer forming both provisionally into a new genus, to referring them to one, from which, although they agree with it in external appearance, they may be totally remote, in consequence of their internal anatomy and habits of life. The error at least will not be so great, and may be easily retrieved. If the tongue of my birds be found to accord with that of the Orioles, and not of the Honey-suckers, my group of course must fall.
(*Footnote. Regne Anim. 1 360.)
(**Footnote. Analyse d'un Syst. Gen. d'Orn. page 52.)
(***Footnote. Birds of New Holland plate 4.)
Genus MIMETES.*
(*Footnote. Mimetes, from Greek, imitator; [assuming the appearance of a different group.])
Rostrum forte, subarcuatum, subcultratum, mandibulis utrisque apice emarginatis; naribus basalibus, lateralibus, subovalibus, membrano partim tectis.
Lingua ad sugendum idonea ?
Alae mediocres, rotundatae; remige 1ma brevissima; 2da et 6ta aequalibus; 3tia et 4ta fere aequalibus; longissimis; 5ta his paulo breviori: remigum 3tiae ad 6tam inclusam pogoniis externis in medio gradatim productis.
Pedes subbreves; acrotarsiis scutellatis, scutis quinque; paratarsiis integris.