( 624 ) 



PIED-BILLED DOBCHICK. 



PODICEPS CAROLINENSIS, LaTH. 



PLATE CCXLVIII. Vol. III. p. 359. 



Male. Mouth 7 twelfths wide ; the palate flat, with two longitu- 

 dinal ridges on each side ; the anterior part with three. The tongue 

 is 10 twelfths long, slender, slightly concave above, trigonal, tapering 

 to a thin horny point. (Esophagus 8 inches long, ^ inch in width 

 along the neck. The proventriculus, b c, forms a very large sac, as in the 

 other species, 10 twelfths in width ; but the stomach, cdef, although 

 still very large, is more muscular in structure, and approaches in cha- 

 racter to a true gizzard. It is of an irregularly elliptical form, If inch 

 long, Ij inch broad ; there are distinct lateral muscles 5 twelfths thick, 

 a very prominent inferior muscle, e, and large oblong tendons. The epi- 

 thelium is very thick, dense, tough, 

 with remarkably strong longitudi- 

 nal rugae, transversely fissured, and 

 also lining the large pyloric cavity, 

 /, which is 8 twelfths in extent. The 

 proventricular glands are exceed- 

 ingly large, those in the middle 

 being 3 twelfths long, and ^ twelfth 

 broad ; they form a belt 1^ inch in 

 breadth. The intestine forms 8 

 folds, and measures 31 inches in 

 length ; its width at the upper part 

 is 3i twelfths, at the lower 3 

 twelfths. The cceca are only 3 

 twelfths long, and 1 twelfth broad. 

 The cloaca is globular, and of mo- 

 derate size. 



The trachea is 5 inches 10 

 twelfths long, much flattened ; 1| twelfth in breadth, toward the 

 lower part 2 twelfths, and lastly contracted to 1| twelfth ; the rings 

 150. The bronchi differ in this species from the rest in being com- 



