. 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 . such cases thevbundle together in passing forward over the skull, and go obliquely to one side. (Derivationof the terms in this paragraph: hijal is another form of hyoid; branchial
. 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 . such cases thevbundle together in passing forward over the skull, and go obliquely to one side. (Derivationof the terms in this paragraph: hijal is another form of hyoid; branchial, Lat. hranchirr,gills ; hasi-, Lat, basin, base; cerato-, Gr. xepas, Keparos. keras, Jceratos, horn; ejn-, Gr. eVi,epi, upon; stylo-, Lat. stylus, a pen; ylosso-, Gr. yXaaaa, ylossa, tongue; uro-, Gr. ovpa,aura, tail; thyro-, Gr. Bvpeos, thureos, a shield.) Other Bones of the Skull.— The articulation of the lower jawwitli the quadrate may have certainsesamoids. Thus, there are twosuch sclerosteous or ligament-bonesin the external lateral ligament ofthe ravens jaw-joint, aud the longoccipital style of the cormorant andsnake-bird is of the same character,being an ossification in the nuchalligament of the neck. The siphon-like tube which conveys air fromthe outer ear-passage to the hollowof the mandible may ossify, as itdoes in an old raven, resulting ina neat tubular air-bone or at-mosteon (Gr. arpos. air).. Figs. 73, 74.—Under fig. side view of a woodpeckers [Picus]skull, showing the long slender basihyal (bh), bearing slight elementsat its fore end, no uroyhal, and extraordinarily long thyrohyals{cbr, ebr) curving up over back of skull and curling together aroundorbit of the right eye. Upper fig. top view of skull of Colaptes,showing thyrohyals running along the skull and into right nostrilto end of the bill. (Dr. R. W. Shufeldt, U. S. A.) Types of Palatal Structure. — The arrangement of the bones of thepalate in birds results in severaltypes of structure, first defined
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1896
