I 



450 [December, 



The Committee on Mr. Gassings " Synopsis of the Falconidae, &c./' 

 reported in favor of publication in the Proceedings. 



Synopsis of the Species of Falconid^ which inhabit America north of Mexico; 



with descriptions of new species . 



By John Cassin. 



1. Subfamily FALCONIN.E. 



1. Genus Falco, Linn. i 



1. Falco anatum, Bonaparte. Comp. List., p. 4, (1838). Wilson. Am. Orn., 

 ix. pi. 76. Aud. B. of Am., pi. 16. 



Hab. Eastern North America, Cuba. 



2. Falco nigriceps, Cassin. Birds of California and Texas, i. p. 87, (1853). 

 Uab. Western North America, Chili. 



3. Falco polyagrus, Cassin. Birds of California and Texas, i. p. 88, (1853.) 

 Hab. Oregon, California. 



2. Genus Hierofalco, Cuvier. 



1. Hierofalco sacer, (Forster.) Aud. B. of Am., pi. 196. 



Falco sacer, Forster. Philos. Trans. London, LXIL p. 423, (1772.) 



'^ Falco islandicus,'' Aud. Orn. Biog., ii., p. 552. 

 Hab. Northern regions, Greenland, Labrador. 



3. Genus Hypotriorchis, Boie. 



1. Hypotriorchis columbarius, (Linn.) Wilson. Am. Orn., ii., pi. 15, fig. 3. 

 Aud. B. of Am., pi. 75, 92. 



Falco columbarius, Linn. Syst. Nat., i., p. 128, (1766). 

 Hab. Throughout North America. 



4. Genus Tinnunculijs. 



1. Tinnunculus sparverius, (Linn.) 



Falco sparverius, Linn. Syst. Nat., i., p. 128, (1766). 

 Hab. The entire continent of America. 



n. Subfamily ACCIPITRINiE. 



1. Genus Astur, Lacepede. 



1. Astur atricapillus, (Wilson.) Wilson Am. Orn., vi., pi. 52, fig. 3, Aud. 

 B. of Am., pi. 141. 



Falco atricapillus, Wilson. Am. Orn., vi., p. 80, (1812). 

 Hab. Northern and Eastern North America. 



2. Genus Accipiter, Brisson. 



1. Accipiter Cooperii, (Bonaparte.) Bonap. Am. Orn., ii., pi. 1. Aud. B. 

 of Am., pi. 36, 141. 



Falco Cooperii, Bonap. Am. Orn. ii., p. 1, (1828). 

 Hab. Throughout North America. 



2. Accipiter mexicanus, Swainson. Faun. Bor. Am. Birds, p. 45, (1831). 

 Hab. California, Mexico. 



3. Accipiter fuscus, (Gmelin.) Wilson. Am. Orn., v., pi. 45, fig. 1. Aud. B. 

 of Am., pi. 374. 



Falco fuscus, Gm. Syst. Nat., i., p. 280, (1788). 

 Kab. Throughout North America. 



