. The birds of eastern North America : with original descriptions of all the species which occur east of the Mississippi River, between the Arctic circle and the Gulf of Mexico, with full notes upon their habits, etc. , . nsvcrsale. present, hut there is no semiluna membrane. Stcrno trachealis, quite welldeveloped, and there is a thin, strap-like broncho trachealis, extending from the Sth ring of the trachea to the4th half ring of the bronchials. (J<]sophagus, straight, slightly dilated at the lower termination; , very large, the gh;nd surface measuring o. It) by
. The birds of eastern North America : with original descriptions of all the species which occur east of the Mississippi River, between the Arctic circle and the Gulf of Mexico, with full notes upon their habits, etc. , . nsvcrsale. present, hut there is no semiluna membrane. Stcrno trachealis, quite welldeveloped, and there is a thin, strap-like broncho trachealis, extending from the Sth ring of the trachea to the4th half ring of the bronchials. (J<]sophagus, straight, slightly dilated at the lower termination; , very large, the gh;nd surface measuring o. It) by ; the glands arc variable in number, butare much more numerous near the upjier opening, becoming fewer tow^ards the stomach, near which thereare scarcely any on the lower side, wiiile they are very scattering above. Stomach, very small, .; walls, thin, and both they and the lining membrane are soft. Duodenum, short, , enclosing a verysmall pancreas. Intestines, 17.(» long, and there are small, globular cuuca. Spleen, small and , ([uite large, .) ., and rather flattened. Liver, variable, but the right lobe is usually much larg-•er than the left, and the gall sack is mSMMS^ Fic. 4, Audubons Shearwater, Puffinus audueoxi; newly hatched downy young, one day old, tak-■en on Green Key, Bahamas, April .jth lsS4. 36 AUDUBONS SHEARWATER. Color. Ailult. Above, sooty brown, lightest anteriorly; there is no abrupt line of demarcation, butthe dark above failes into the white of tiie lower surface on a line with the eye and encroaches on it in alatch just below the bend of the wing, and slightly on the under wing coverts. Lower surface, w hite, ex-cepting terminal portion of upjier tail coverts which are sooty brown. Iris, Ijruwn. Bill, very dark , brown externally, orange internally. Downy young. Above, light reddish brown, becoming paler below, with a patch of white beneath thatis wide uii the throat, narrows on the breast, the
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1896
