451 
laropus ; andTemminck made it still more heterogeneous, by adding 
the genus Podoa. No four genera are in fact, less allied as a group 
than these, and when in our arrangement we restored to their true 
situation, Fulica and Phalaropus , it was through prejudice only 
that we left Podiceps and Podoa together in the same F amily. 
Note 29. Cerorhinca. The new species which forms the type 
of this genus, was first announced by us in the Journal here cited, 
and we then referred it to the genus Phaleris , under the name of 
P. cerorhynca , suggesting, however, that it might form a group by 
itself, and upon further consideration, we have decided to propose 
it as such. 
The total number of our North American genera, has been 
increased from eighty, to ninety. The genera added are, Garrulus , 
Cinclus , Aramus , T halas sidi'oma, Pujfinus , Anser , Cygnus , 
Fuligula , Phaleris , Cerorhinca. 
The six species of birds referred to in the note, p. 296. to be 
added to the first three Orders, are Strix cinerea , Corms stelleri y 
Bomby cilia garrula , Cinclus pallasii , Emheriza lapponica, and 
Tetrao urophasianus. To these must now be added, Falco 
cooperii, so that the total number of United States species com- 
prised in our Synopsis and Appendix, amounts to 382. 
