THE HORNED GREBE. 321 



carmine, the iris with an inner white edge; the feet bluish-grey. The upper 

 part of the head, and the hind neck, are greyish-black, as are the upper parts 

 in general. The feathers of the back edged with light grey. The throat, 

 the sides of the head, a broad patch on each side of the neck nearly meeting 

 behind, and the breast white; the sides and downy feathers of the abdomen 

 brownish-grey. Some of the secondaries are white, as in the adult male. 



Male. The mouth as in the last species, 4|- twelfths wide; the tongue 11 

 twelfths long, and similar to that of the Red-necked Grebe. (Esophagus 7 

 inches in length, along the neck only 4 twelfths broad; the proventriculus 

 excessively large, ovate, 10 twelfths in breadth. The stomach is an enor- 

 mous sac, 2 inches long, 1^ broad, a little compressed, of the same structure 

 as in the last species; its tendons 4 twelfths in breadth. There is a small 

 flattened pyloric lobe. The contents of the stomach are feathers, and bones 

 of fishes. There is in this species a very distinct, thick, soft, bright red, 

 longitudinally rugous epithelium. The proventricular glands are of great 

 size, the largest 3 twelfths long, 1 twelfth in breadth; they form a belt \% 

 inches in breadth. The lobes of the liver are very large, the left 2 inches 4 

 twelfths long, the right 2 inches; the gall-bladder oblong. The intestine 

 forming 12 curves; its length is 49 inches, its breadth at the upper part 5 

 twelfths, diminishing to 3 twelfths; the cceca 2 inches long; their greatest 

 width 2 twelfths, their distance from the extremity 1 inch 9 twelfths. 

 Cloaca globular, about 7 twelfths in width. 



The trachea is 6^ inches long, much flattened in its whole length, except- 

 ing half an inch at the lower part; for half its length it is 2 twelfths in 

 breadth, then enlarges to 3 twelfths, and finally diminishes to 1-| twelfths. 

 The rings are 184, firm. The bronchi are slender, with the rings complete, 

 ossified, 12 in number: the remaining part being membranous. The muscles 

 as in the last. 



The jugular veins are not enlarged in this species. 



Vol. VII. 45 



