451 



laropvs; 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 Family. 



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, Gamilus, 

 Cinclus, Aramus, Thalassidroma, Puffinus, 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, Corvus stelleri, 

 Bombycilla garrula, Cinclus pallasii, Emberiza 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. 



