. On the natural history and classification of birds . nt view of them, perched upon the topmost branchesof the loftiest trees. All the species above alluded toare comprised in the genus Casmorhynchus of , while the beautiful genus Calyptomina ofIndia forms the passage from this genus to theswallow chatterers just described. We quit Casmo-rhynchus for the genus Ampelis, or the true chatterers,called by the French Cotinga, and constituting a groupof surpassing beauty: they arerather smaller in stature, and, butfor their shorter and broader bills,might be taken for is a
. On the natural history and classification of birds . nt view of them, perched upon the topmost branchesof the loftiest trees. All the species above alluded toare comprised in the genus Casmorhynchus of , while the beautiful genus Calyptomina ofIndia forms the passage from this genus to theswallow chatterers just described. We quit Casmo-rhynchus for the genus Ampelis, or the true chatterers,called by the French Cotinga, and constituting a groupof surpassing beauty: they arerather smaller in stature, and, butfor their shorter and broader bills,might be taken for is a peculiar soft, silky,and glossy texture on the feathers,which increases the splendour ofthe changeable blue, purple, anddark red, which generally spreadsentirely over their plumage. Theydiffer from the last also, which areplain coloured birds, in the head and neck being alwaysclothed with feathers in the usual manner. Le Vaillant,in one of his costly ornithological works*, has figured nearly* Hist. Nat. dune Partie dOiseaux de LAmerique et des 76 ON THE CLASSIFICATION OF BIRDS. all the species. In Casmorhynchus and in Ampelis thereare no crested birds; but this ornament forms the prin-cipal distinction of the genus Rupicola, or rock manakinof Cayenne. The familiar name of cock of the rock, longbestowed on this bird, is very characteristic, since itunquestionably represents the rasorial type of the truechatterers: by this we are led to the Ampelis carnifexof Linnaeus, forming our genus Phcenicercus ; a remark-able form, having the general habit and size of thisdivision, and the feet of the true manakins, to whichnow we proceed. (87.) The Pipkins constitute the subtypical groupof this family: they are called manakins, from their dimi-nutive size, which is seldom larger than that of a again we find the richest tints of yellow, orange,crimson, and blue, relieving the olive green or deepblack plumage of these elegant little birds. Like thepreceding, they are stri
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