ON THE TRACHEA OF THE GALLINZ. 497 
semiring articulates at one end, and the other (as does the second in Page 373. 
Buplocamus) with the first. Ceriornis satyra agrees exactly with C. 
temmincki in its lower larynx. 
My acquaintance with the trachea of Francolinus is confined to 
F. vulgaris, an early sketch, too, only of that. Its great peculiarity 
is that the first three bronchial semirings articulate together, the third 
being decidedly the strongest, the first and second being separated by 
a greater interval than exists in Certornis. 
In Crossoptilon mantchuricwm the thoracic end of the trachea is 
euplocamine in construction. It narrows considerably near its termi- 
nation, at which it again expands. The only indications of inter- 
annular intervals are small medio-anterior fusiform spaces, absent 
between the antepenultimate and penultimate rings, and replaced by 
a fusion in the case of the last two, on each side of which the lateral 
Separation between the rings expands intoa minute triangular interval, 
smaller than in Euplocamus. The pessulus agrees with that of the 
Euplocami. The interval between the last tracheal ring and the first 
bronchial semiring is very large, both upper and lower margin being 
about equally convex upwards, from the shape of the last tracheal ring 
and the uptilting of the first semiring. The interval between the first 
and second semirings is scarcely smaller, and is ovoid, the latter semi- 
ring being decidedly downturned laterally, bent upwards abruptly near 
its ends, and particularly strong throughout. On the whole, the organ 
Fig. 26. Fig. 27. 
+1] ] 
soot 
—~ 
{ 
Front view. Back view. 
Crossoptilon mantchuricum, 
2k 
