OF GALLINACEOUS BIRDS AND TINAMOUS. 167 
inches. lines. 
Length of colo-rectum and cloaca . . . . . 5) O 
Didi ofrouncmac ta hls fs les oe LONE 
Wadiiwotlattenepe armen. UNG. ss ee YEO 
The proventricular glands are small, simple, and ovoidal as in the Rails, and not 
racemose as in the Fowls and Grouse. The belt of glands is complete. ‘The lining of 
the gizzard is precisely like that of the Fowl ; and the mucous membrane of the ceca 
coli is simple, and not raised into strong longitudinal folds as in Lagopus and Syrrhaptes. 
The gall-bladder is large. 
The trachea is 4 lines wide, flat, and rather feebly ossified; but the rings are com- 
plete bone, save at the top, where the bone is in patches, as in the Fowl. There is one 
pair of inferior laryngeal muscles, as in Pigeons, the Syrrhaptes, Rails, Plovers, and 
many other birds. These muscles are absent in Ostriches, Fowls, Grouse, and Geese. 
There are no inferior laryngeal muscles in Dendrortyx; and its ceca coli, which are 
nearly 5 inches long by one-third of an inch wide, are plicated within, the folds being 
inosculated as in the typical Fowls, and not continuous as in the Grouse and Sand-grouse. 
The structure of the viscera of Talegalla conform, on the whole, to those of typical 
gallinaceous birds; yet there is a falling-away from the type in the simplicity of the pro- 
ventricular glands, and an ascent, as it were, from the type in the possession of a more 
complicated inferior larynx. It is evident that the Talegalla, like the mower and the 
ploughman, has to labour hard, and yet to content himself with very coarse fare: his 
digestive organs are evidently competent to deal with almost anything the vegetable 
kingdom can supply. 
d. The aberrant ‘‘ Cracine.” 
Example 1: The Globose Curassow ; Craz globicera, Linn. 
These noble birds come much nearer to the highest kinds of the arboreal groups than 
do the typical ‘‘ Gallinz,” and the skeleton is as perfectly pneumatic as in the Diurnal 
rapacious birds. The only bones not admitting air are those which lie distad of the 
elbow- and knee-joints, and also the flat and feeble furculum. There is but little to 
add to what I have said of the skeleton generally of this bird in the foregoing descrip- 
tion of the Talegalla. Leaving out the head, the rest of the bird’s structure is princi- 
pally separated from that of the gigantic Turkey and Peafowl by the absence of the 
spurs and the low position of the heel. The habits of these ‘‘ Cracinz ”’ show a nearer 
approach to the typical ornithic groups. There is also nothing in their digestive organs, 
nor in the structure of their organs of speech, to distinguish them from the giants of 
the typical subfamily. Outwardly they differ considerably, having lost the typical 
gaudiness ; yet their dress is, in many cases so rich, even in its neatness, that the 
absence of bright colouring is scarcely to be considered a loss. Wattles appear again 
VOL. V.—PART III. Z 
