. A dictionary of birds . Diagram of a Tracheal and a Bronchial traclieo-clavicular muscle. I. Syrinx trachealis, in which the lower portion of the Tracheaconsists of thin membranaceous walls, about six of the rings beingextremely thin or, as often happens, deficient. Both inner andouter tympaniform membranes exist in the Bronchi as well assome vibratory tracheal membranes. The few muscles, generallybut one pair, are wholly lateral. The birds thus furnished are theTracheophon^, their voice is very loud, and while it is beingsounded the lower part of the throat swells out. The
. A dictionary of birds . Diagram of a Tracheal and a Bronchial traclieo-clavicular muscle. I. Syrinx trachealis, in which the lower portion of the Tracheaconsists of thin membranaceous walls, about six of the rings beingextremely thin or, as often happens, deficient. Both inner andouter tympaniform membranes exist in the Bronchi as well assome vibratory tracheal membranes. The few muscles, generallybut one pair, are wholly lateral. The birds thus furnished are theTracheophon^, their voice is very loud, and while it is beingsounded the lower part of the throat swells out. They belongentirely to the Neotropical Kegion, and comprising the Dcndro-colaptidse, Formicariidx, Pteroptocliidie and Conopophagidx, form atolerably well-marked group of the Passeres Clamatores. Indica-tions of such a tracheophonous Syrinx exist in various Cotingidxand Pittidx, as well as in Columhse and Gallinx—but the last casesare clearly only analogous. II. Syrinx bronchialis, in Avhich outer tympaniform membranesexist betw
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Keywords: ., bookauthorlyde, bookcentury1800, bookdecade1890, booksubjectbirds
