CHECK LIST OF NEW YORK BIRDS 293 
193 (353) White gyrfalcon! 
Falco islandus Briinn. 
194 (354a) Gyrfalcon? 
Falco rusticolus gyrfalco (Linn.) 
195 (354b) Black gyrfalcon 
Falco rusticolus obsoletus (Gmel.) 
196 (356) *Duck hawk 
Falco peregrinus anatum (Bonap.) 
1Qne taken on Long Island in 1856. See Auk, 10:274-75; An. lyc. nat. hist. N. Y. 8:280. 
2Long Island, fall of 1875. Lawrence. 
