. The structure and classification of birds . Caco-mantis, Play a, Saurothera, Diplopterus, Coccuzus, Chryso-coccyx, and Coccystes agree in most points with Cue til in the American genera Piay a, Diplopterus, Saurotlicrn,and CWr//,:^.s-, the ventral tract is double from the very first—that is to say, in the mandibular region. A more complicated pterylosis characterises certain other. FIG. 135.—ITKKYLOSIS OF Piay a cay ana. DOHSAL VIEW. (AFTER BEDDAKD.) cuckoos. Iii the genus Centropus the feathering upon thethroat is close and continuous, the twro ventral tracts diverg-ing at about the
. The structure and classification of birds . Caco-mantis, Play a, Saurothera, Diplopterus, Coccuzus, Chryso-coccyx, and Coccystes agree in most points with Cue til in the American genera Piay a, Diplopterus, Saurotlicrn,and CWr//,:^.s-, the ventral tract is double from the very first—that is to say, in the mandibular region. A more complicated pterylosis characterises certain other. FIG. 135.—ITKKYLOSIS OF Piay a cay ana. DOHSAL VIEW. (AFTER BEDDAKD.) cuckoos. Iii the genus Centropus the feathering upon thethroat is close and continuous, the twro ventral tracts diverg-ing at about the junction of the neck and trunk. Each of these, 1 BEDDARD, On the Structural Characters and Classification of the Cuckoos,P. Z. 6. 1885, p. HIS; SHUFELDT, Contributions to the Anatomy of Geococcyx,ibid. 1886, p. 960. CUCULI 275 again, divides into two separate tracts, of which the inneris at first two feathers wide, which number is reduced to onejust before the termination of the row a little way in front ofthe cloacal aperture. The outer branch consists of one rowonly, and terminates some way in front of the end of the innerbranch, without, however, showing any signs of being fusedwith it. Pyrrhocentor, Gcococcyx, Crotophdga, Endi/)ia»iix,
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1898
