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.

Cauda mediocris, fere aequalis.

6.  VIRIDIS.  M. olivaceo-viridis, subtus albidus nigro guttatim striatus; alis caudaque nigro-fuscis, illis albido-marginatis, hac apice albo.

Gracula viridis.  Lath.  Ind.  Orn. supp. page 28.

Caput dorsumque olivaceo-viridia, plumis in medio longitudinaliter fusco-lineatis.  Tectrices superiores nigro-fuscae, ad apicem albido-marginatae; inferiores albido nigroque variegatae.  Remiges supra fuscae, ad marginem externum apicemque leviter albido-notatae; subtus pallide fuscae.  Rectrices nigro-fuscae, subtus pallidiores, omnibus, duabus mediis exceptis, apice albo-maculatis.  Rostrum flavum.  Pedes nigri.  Longitudo* corporis, 10 1/4; alae a carpo ad remigem 3tiam, 5 7/10; caudae, 4 4/5; tarsi, 17/20; rostri ad frontem, 1 2/10, ad rictum, 1 3/10.

(Footnote.  My measurement is in inches, and their component parts.)

7.  FLAVO-CINCTUS (n.s.) M. flavo-viridis, subtus pallidior, capite dorsoque fusco-lineatis, alis caudaque nigris viridi flavoque variegatis.