296 



BIRDS OF THE REPUBLIC OF PANAMA PART 4 



time Canada. A male, USNM no. 486554, taken at Almirante, Bocas 

 del Toro, October 21, 1964, is of this race. 



GEOTHLYPIS TRICHAS MINNESOTICOLA Oberholser 



Geothlypis trichas minnesoticola Oberholser, 1948, Descr. New Races Geothlypis 

 trichas (Linnaeus), p. 2. (St. Paul, Minnesota.) 



Characters.— Grayish green above, more rufescent on flanks and 

 more orange-yellow on throat. 



Breeds in the northern Mississippi Valley from Iowa to Wisconsin 

 and north to western Ontario and Manitoba. Specimens in the Smith- 

 sonian are as follows: USNM no. 459115, a female from El Volcan, 

 Chiriqui, March 14, 1955; USNM no. 462397, a male from Mandinga, 

 San Bias, February 3, 1957; and USNM no. 469133, a male from 

 Changuinola, Bocas del Toro, February 13, 1958. 



GEOTHLYPIS TRICHAS ROSCOE (Audubon) 



Sylvia roscoe Audubon, 1831, Orn. Bio. 1, p. 124. (not far from the River Mis- 

 sissippi, Mississippi.) 



Characters. — Small, paler, more yellowish green above; more rufes- 

 cent on the flanks; more orange-yellow on throat. 



Breeds in the lower Mississippi Valley. E. A. Goldman collected a 

 male, USNM no. 207165, at the Rio Indio, Canal Zone, on February 

 13, 1911, that has been identified as this race. 



GEOTHLYPIS TRICHAS TYPHICOLA Burleigh 



Geothlypis trichas typhicola Burleigh, 1934, Proc. Biol. Soc. Washington, 47, p. 21. 

 (Athens, Georgia.) 



Characters. — Brownish above and below, lighter colored, smaller. 



Breeds on the southeastern coastal plain from eastern Mississippi 

 north to Virginia, exclusive of Florida. Dr. Aldrich has identified 3 

 specimens from Almirante, Bocas del Toro, as belonging to this race: 

 USNM no. 486553, a male collected April 24, 1963; AMNH no. 

 785926, an immature male taken October 17, 1965; and a female from 

 the Gorgas Memorial Laboratory collected October 15, 1967. 



GEOTHLYPIS AEQUINOCTIALIS CHIRIQUENSIS (Salvin): 

 Masked Yellowthroat, Reinita Gargantiamarilla Chiricana 



Geothlypis chiriquensis Salvin, 1872, Ibis, p. 148. (Slopes of Volcan de Chiriqui, 

 Panama. ) 



Small; upper surface bright yellowish green; undersurface yellow; 

 male with black facial mask. 



