. On the natural history and classification of birds . head; the culmen arched. Nostrils large, basal,covered by a membrane, naked; the aperture ter-minal, and oval. Feet very large. Toes without anylateral membrane. Claws large, slightly (fig. 310.) P. smaragnotus. Tern. Man. Americanus.* Wil. 75. f. p. 700. albus. Whites Voy. pi. 27. Fulica, Linn. Coot. (fig. 311.) Bill as in Porphyrio, butmore slender : the base straight: the gonys short andangulated. Feet very large. The toes margined with. * The Gallinula Martinica of Latham, but a true A 3 358 ON THE
. On the natural history and classification of birds . head; the culmen arched. Nostrils large, basal,covered by a membrane, naked; the aperture ter-minal, and oval. Feet very large. Toes without anylateral membrane. Claws large, slightly (fig. 310.) P. smaragnotus. Tern. Man. Americanus.* Wil. 75. f. p. 700. albus. Whites Voy. pi. 27. Fulica, Linn. Coot. (fig. 311.) Bill as in Porphyrio, butmore slender : the base straight: the gonys short andangulated. Feet very large. The toes margined with. * The Gallinula Martinica of Latham, but a true A 3 358 ON THE CLASSIFICATION OP BIRDS. a lateral membrane, which is either narrow, andof equal breadth, or dilated into lobes. The natato-rial type. * F. Chloropus. Selby, ii. pi. 31. atra. Selby, ii. pi. , Linn. Rail. Bill lengthened, slender. Bothmandibles, in general, slightly curved, and with
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