. Key to North American birds. Containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary, inclusive of Greenland and Lower California, with which are incorporated General ornithology: an outline of the structure and classification of birds; and Field ornithology, a manual of collecting, preparing, and preserving birds. Birds; Birds. 168 GENERAL ORNITHOLOGY. whole hyoid apparatus of the woodpeckers is specially uiodified; the basihyal is very long and slender, bearing stunted oerato- and glosso-hya
. Key to North American birds. Containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary, inclusive of Greenland and Lower California, with which are incorporated General ornithology: an outline of the structure and classification of birds; and Field ornithology, a manual of collecting, preparing, and preserving birds. Birds; Birds. 168 GENERAL ORNITHOLOGY. whole hyoid apparatus of the woodpeckers is specially uiodified; the basihyal is very long and slender, bearing stunted oerato- and glosso-hyals at its extreme end; there is no uro- hyal, or only a rudiment; the cerato-branchials are long, and the epihranchials so extraordi- narily elongated in some species as to curl up over the back of the skull and forward along the top of the skuU to a variable distance; sometimes, as in fig. 73, curling around the orbit of the eye, or, as in fig. 74, running into the nostril to the tip of the beak. In such cases they bundle together in passing forward over the skuU, and go obhquely to one side. (Derivation of the terms in this paragraph: hyal is another form of hyoid; brcmchial, Lat. branchice, giUsj basi-, Lat. basis, base; cerato-, Gr. Kepas, Keparos, keras, keratos, horn; epi-,,GT. iiri, epi, upon; stylo-, Lat. stylus, a pen; glosso-, Gr. yXatra-a, ghssa, tongue; wro-, Gr. oipa, oma, tail; thyro-, Gr. dvpeos, thureos, a shield.) Other Bones of the SkuU.— The articulation of the lower jaw with the quadrate may have certain sesamoids. Thus, there are two such selerosteous or ligament-bones in the external lateral ligament of the raven's jaw-joint,' and the long occipital style of the cormorant and snake-bird is of the same character, being an ossification in the nuchal ligament of the neck. The siphon- like tube which conveys air from the outer ear-passage to the hollow of the mandible may ossify, as it does in an old raven, resulting in a neat tubular '' air-bone" or at
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1894
