. 107 
I allude to the great excess in the number of species of some of the 
principal groups, and the paucity of others ; for instance, of the 
true Anatidce or Ducks, exclusive of the Mergansers, the European 
fauna comprises at least forty species, while eighteen are all that are 
known in Australia ; of the Laridce or Gulls, exclusive of the Terns, 
twenty species inhabit Europe, while three are all that are known 
in Australia ; on the other hand, sixteen species of Terns frequent 
the shores of Australia, while only twelve resort to those of Europe ; 
of the family Procellaridce or Petrels, nearly forty species enliven 
the Australian seas, while seven are all that are known to inhabit 
the seas of Europe ; of the Puffins and Guillemots of our hemisphere 
no species is found in Australia or in any other part of the south 
seas ; on the other hand, the Penguins of those seas are unknown 
in Europe ; while the Grebes and Cormorants are about equal in 
number in both hemispheres. 
Family ANATIDCE. 
Genus Cereopsis. 
But one species of this singular and strictly Australian form has 
yet been discovered. 
539. Cereopsis Novm-Hollandise, Lath. . . . Vol. VII. PI. 1. 
Genus Anseranas. 
Like Cereopsis , this genus contains but a single species, which is 
equally confined to Australia. 
540. Anseranas melanoleuca Vol. VII. PI. 2. 
Genus Bernicla. 
The Australian bird ^hitherto referred to this genus should cer- 
tainly receive a new generic appellation, since it does not agree either 
in form or habits with the true Berniclce. 
541. Bernicla jubata Vol. VII. PI. 3. 
Genus Nettapus. 
Of this beautiful genus of Pygmy Geese there are now at least 
four- species known ; one inhabiting Africa, one India, and two 
Australia. 
542. Nettapus pulchellus, Gould ...... Vol. VII. PL 4. 
543. Nettapus albipennis, Gould. 
Nettapus Coromandelianus Vol. VII. PI. 5. 
I feel confident that the Australian bird which I have figured 
under the name of N. Coromandelianus , is quite distinct from the 
Indian bird, 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. 
