Only one species, the C. atratus, is, I believe, found south of the line; for the Black-necked Swan of Chili will doubtless prove to be generically distinct.
| 544. Cygnus atratus | Vol. VII. Pl. 6. |
This “rara avis in terris” is not only strictly confined to Australia, but is so exclusively an inhabitant of the southern districts, that no notice has been recorded of its having been seen in Torres’ Straits, or on any part of the north coast.
Genus Casarca, Bonap.
This ornamental section of the Anatidæ is not very numerous in species.
| 545. Casarca Tadornoïdes | Vol. VII. Pl. 7. |
A beautiful representative of the C. rutila of Europe.
Genus Tadorna, Leach.
| 546. Tadorna Radjah | Vol. VII. Pl. 8. |
An equally beautiful representative of the T. Vulpanser.