OCR Text |
Show 1879.] TRACHEA OF THE GALLING. 373 at one end, and the other (as does the second in Euplocamus) with the first. Ceriornis satyra agrees exactly with C. temmincki in its lower larynx. Fig. 24. Fig. 25. Front view. Back view. Ceriornis temmincki. M y 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 Ceriornis. In Crossoptilon mantchuricum the thoracic end of the trachea is euplocamine in construction. It narrows considerably near its termination, at which it again expands. The only indications of interannular 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 tbe lateral separation between the rings expands into a 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 semiring being decidedly downturned laterally, bent upwards abruptly near its ends, and particularly strong throughout. On the whole, the organ is more like that of Phasianus than Euplocamus, its most striking difference from the former being the lateral uptilting of the first bronchial semiring, and the similar tendency in the sides of the last tracheal ring. In Lophophorus impeyanus the lower tracheal rings, which are narrower than those above, are in contact with one another behind |