436 check list of north american birds. 



Family FALCONIDAE. Caracaras and Falcons. 

 Subfamily POLYBORINAE. Caracaras. 



Genus POLYBORUS Vikillot. 



Polyborus Vieillot, Analyse, 1816, 22. Type, by monotypy, Caracara, 

 Bu; FON = Falco tharus Molina. 



Polyborus cheriway (Jacquin). Audubon's Caracara. 



Falco (cheriway) Jacquin, Bcytr. Gesch. Vogel, 1784, 17, pi. 4. 



Modern form reported from Pleistocene: Seminole Field, and Melbourne, 

 Florida; McKittrick, Carpinteria, and Rancho La Brea, Los Angeles, 

 California. 



Subfamily FALCO NINAE. Falcons. 



Genus FALCO Linnaeus. 



Falco Linnaeus, Syst. Nat., ed. 10, I, 1758, 88. Type, by subs, desig., 

 Falco subbuteo Linnaeus (A. O. U. Coram., 1886). 



Subgenus HIEROFALCO Cuvier. 



Hierofalco Cuvier, Rcgne Animal, I, 1817 [Dec. 7, 1816], 312. Type, by 

 monotypy, Falco candicans Gmelin. 



Falco mexicanus Schlegel. Prairie Falcon. 



Falco mexicanus "Lichtenstein," Schlegel, Abh. Geb. Zool., Heft iii, 

 1850, 15. 



Modern form reported from Pleistocene: McKittrick, and Rancho La Brea, 

 Los Angeles, California. 



Falco swarthi Miller. 



Falco sivarlhi L. H. Miller, Condor, XXIX, No. 3, May 15, 1927, 152, 

 fig. 54. 



Pleistocene: McKittrick, California. • 



Subgenus RHYNCHODON Nitzsch. 



Rhynchodon Nitzsch, Obs. Avium Art. Carot. Comm., 1829, 20, Type, 

 by subs, desig., Falco pcrcgrinus Tunstall (A. O. U. Comm., 1886). 



