FAMILY TYRANNIDAE 477 



The measurements listed have been taken from males collected on 

 their northern breeding grounds. 



Measurements. — Males (10 from Pennsylvania, Maryland, New 

 Jersey, and New York), wing 70.0-74.6 (71.7), tail 54.5-59.0 (56.2), 

 culmen from base 13.6-15.3 (14.6), tarsus 16.1-16.9 (16.5) mm. 



Females (2 from Indiana and Illinois), wing 67.0, 68.0, tail 53.0, 

 54.5, exposed culmen 11.0, 11.5, tarsus 14.5, 16.0 mm. 



Migrant from the north, not common ; recorded (from specimens) 

 from October 30, through the winter season in December, to May 11. 



Those of this race that I have seen from Panama include an 

 adult female, that had not yet begun the molt, from Barro Colorado 

 Island, Canal Zone, October 30, 1956 ; an adult male with molt com- 

 mencing, from Almirante, Bocas del Toro, December 11. 1960; a 

 male that had renewed most of its plumage, from Tonosi, Los Santos, 

 March 23, 1957 ; and one in full dress from Curundu, Canal Zone, 

 May 11, 1963. 



Records in the collections made by Carriker in Colombia include a 

 male from Nuqui on the coast of Choco, March 1, 1951, another from 

 Tierra Alta, near the Rio Sinu, Cordoba, February 17, 1949, male 

 and female from Villa Felisa, Norte de Santander, October 23 and 

 November 1, 1947; and one that I secured at Nazaret, eastern 

 Guajira, April 29, 1941. 



Two males of this race in the Museum of Comparative Zoology 

 were taken by W. W. Brown, Jr., on Isla Saboga, Archipielago de 

 las Perlas, April 12 and 13, 1904. 



EMPIDONAX TRAILLII BREWSTERI Oberholser 



Empidonax traillii breivsteri Oberholser, Ohio Journ. Sci., vol. 18, no. 3, January 

 1918, p. 93. (Cloverdale, Nye County, Nevada.) 



Somewhat dark grayish brown ; not as olive in hue as nominate 

 traillii, and averaging slightly smaller. 



Measurements. — Males (4 from Washington and California), 

 wing 66.9-69.1 (67.9), tail 54.4-58.4 (56.5), culmen from base 

 14.3-14.9 (14.6). tarsus 16.1-16.6 (16.4) mm. 



Females (4 from Washington and California), wing 62.8-67.7 

 (65.1), tail 52.2-56.6 (55.2), culmen from base 14.3-15.9 (15.1), 

 tarsus 16.1-16.7 (16.2) mm. 



Migrant from the north, possibly present during the winter season. 



The only specimen definitely identified from Panama that I have 

 seen is a male with molt nearly complete, that I collected at Pese, 

 Herrera, March 30, 1948. 



