. 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. , . rno trachealis is comparatively slender and has its origin about .-V) above the larynx, see rig. 1 IC, s, m being the trachea and b the bninc-hial tube. There is a thin, stap-like. brnnchialis muscle arising 66 BOOBY GANNET. some distance adove the junction of the sterno-trachealis witli the trachea, and passing below it, adheres tothe first tracheal hall ring, see Fig. 14, u
. 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. , . rno trachealis is comparatively slender and has its origin about .-V) above the larynx, see rig. 1 IC, s, m being the trachea and b the bninc-hial tube. There is a thin, stap-like. brnnchialis muscle arising 66 BOOBY GANNET. some distance adove the junction of the sterno-trachealis witli the trachea, and passing below it, adheres tothe first tracheal hall ring, see Fig. 14, u. Below this muscle, and rendered tense by it is a hiryngeal vibra-ting surface, see Fig. 14, u. The bronchial tubes are composed of twenty or more half rings and adhere together at their laryngealjunction, for the space occupied by five half rings. Below this are small tympaniform membranes. The oesophacrus of the Booby Gannct is dilated, and opens into a wide proventriculus which is longand which enieriies into the stomach without any constriction. See Fig. 14, where is given the stomach andadjacent organs,about two thirds life size; the proventriculus begins at a point just below g, where is given Fig. L //- ^l^%u^ Young of Corys Gannet, coryi, two days old, taken on Little Cayman, April 20, 1,888. a small portion of the gullet, and extends to a point about opposite p. The proventriculus at its junction withthe stomach, is .70 in diameter. The glands are placed in five longitudinal ridges, and are simple and cylin-drical in form. The stomach is a cylindrical sack with soft, thin walls and lined with a soft mucous that israised in five ridges, coutniuous with those of the proventriculus. Its length is to that of the proven-triculus. The intestine emerges from the stomach at a point about one half its length from the terminal end whichthus becomes a cul-de-sac, see Fig. 14, x; it passes upward for , then bends downward for 2.,;, again
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1896
