FAMILY TYRANNIDAE 425 



Migrant from the north, and winter resident ; specimen records 

 follow. 

 Chiriqui : Puerto Armuelles, November 8, 1929, February 21, 1966; 



San Felix, December 1, 1931. 

 Bocas del Toro : Cocoplum, October 29, 1927 ; Almirante, October 4, 



1964 ; Boquete Trail, 450 meters, above Chiriqui Grande, March 



22, 1926. 

 Los Santos: Las Palmitas, January 23, 1962. 

 Province of Panama: La Campana, March 4, 1951 ; Charco del Toro, 



March 24, 1950. 

 Canal Zone : Far fan, October 17, 1955. 

 Darien: Jesucito, April 9, 1922; Boca de Paya, Rio Tuira, March 15, 



1959; Pucro, February 5, 1964. 

 Isla Gobernadora: January 8, 1965; Isla Saboga: April 9, 13, 1904. 



The breeding range in the north extends from southeastern Louisi- 

 ana and southern Mississippi to southern South Carolina, and south- 

 ward in the lowlands of Georgia through Florida. Obviously the 

 total population is small, a fact reflected in the few individuals found 

 in the considerable series of migrant birds seen in winter from the 

 Republic of Panama. 



MYIARCHUS CRINITUS BOREUS Bangs 



Myiarchns crinitus boreus Bangs, Auk, vol. IS, no. 2, April 1898, p. 179. 

 (Scituate, Massachusetts.) 



Characters. — Dorsal surface averaging lighter, somewhat olive 

 greenish gray ; bill somewhat smaller and slightly less in bulk, often 

 slightly shorter. 



Measurements. — Males (10 from North Carolina and Tennessee 

 to Minnesota, Wisconsin, Virginia, and Maryland, from late April 

 to early July), wing 100.1-106.2 (103.4), tail 87.3-92.5 (89.6), cul- 

 men from base 22.7-24.6 (23.0), tarsus 20.4-21.8 (21.3) mm. 



Females (10 from Kentucky and Virginia to Kansas, Pennsylvania, 

 and Rhode Island, in May, June), wing 93.9-99.1 (96.4), tail 80.6- 

 85.2 (83.1), culmen from base 20.6-23.6 (22.1), tarsus 20.2-21.4 

 (20.7) mm. 



Migrant from the north, and winter resident. Common ; specimen 

 records range from western Chiriqui and Bocas del Toro, eastward, 

 including the wooded and partly wooded areas of the Azuero 

 Peninsula, to eastern Darien and eastern San Bias. Island records 

 are as follows : Isla Parida, Isla Coiba, Isla Cebaco, Isla Gobernadora. 



The breeding range extends from southeastern Saskatchewan east 



