204 
THE HORNED GREBE. 
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, twelfths wide ; the tongue 11 
twelfths long, and similar to that of the Red-necked Grebe. (Esophagus 1 
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 J 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 H 
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 coeca 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 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. 
