INTRODUCTION. 
xci 
Genus Anseranas, Less. 
Like Cereopsis, this genus contains but a single species, which is equally confined to Australia. 
540. Anseranas melanoleuca 
Vol. VII. PI. 2. 
Genus Bernicla, Steph. 
The Australian bird hitherto referred to this genus should certainly receive a new generic appellation, since it 
does not agree either in form or habits with the true Berniclce. 
Genus Nettapus, Brandt. 
Of this beautiful genus of Pygmy Geese there are at least four species known ; one inhabiting Africa, one 
India, and two Australia. 
I feel confident that the Australian bird which I have figured under the name of N. Coromandeliams, is quite 
distinct from the Indian, and I have therefore assigned it a new name. 
My figures are stated to be of the natural size, but this is an error : they are considerably smaller. 
Genus Cygnus, Lhtn. 
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. PI. 6. 
This " rara avis in terris " is not only strictly confined to Australia, but is so exclusively an inhabitant of th e 
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 Anatidce is not very numerous in species. 
545. Casarca Tadornoides ...... i ..... . Vol. VII. PI. 7. 
A beautiful representative of the C. rutila of Europe. 
541. Bernicla jubata 
Vol. VII. PI. 3. 
542. Nettapus pulchellus, Gould 
543. Nettapus albipennis, Gould. 
Nettapus Coromandelianus 
Vol. VII. PL 5. 
Vol. VII. PI. 4. 
Genus Tadoena, Leach. 
546. Tadorna Radjah 
Vol. VII. PI. 8. 
An equally beautiful representative of the T. Vulpanser. 
Genus Anas, Linn. 
Of true Ducks three species are found in Australia. 
547. Anas superciliosa, Gmel. ■ . . . . . . . . ... . Vol. VII. PI. 9. 
