294 BIRDS OF THE REPUBLIC OF PANAMA PART 2 



David," and later was included by Lawrence (Ann. Lye. Nat. Hist. 

 New York, vol. 8, 1865, p. 177) in a list of birds collected near 

 David by F. Hicks. It seems appropriate from this to designate 

 David, Chiriqui, as the restricted type locality. 



Enrique Arce collected it on the Cordillera del Chucu and at 

 Calobre in Veraguas (specimens in the British Museum with the 

 locality Calobre). A male in the U. S. National Museum received 

 in exchange from Graf von Berlepsch came from the taxidermist 

 R. Herrera from Aguadulce, Code, about 1877. A female in the 

 U. S. National Museum was taken March 16, 1931, at San Francisco, 

 Veraguas, by R. R. Benson. It is of especial interest to record 2 males 

 in immature dress from Gatun, Canal Zone, taken May 8, 1911 by 

 E. A. Goldman since there are no other reports east of Code. It 

 will be noted also that these are from the Caribbean slope, and that 

 here, in the lower Chagres Valley, these birds are found with 

 Anthracothorax nigricollis. 



Resemblance of these hummingbirds to the widely distributed 

 species Anthracothorax prevostii, with races in Mexico and Central 

 America south to Costa Rica, Isla Providencia and Isla San Andres 

 in the Caribbean, and the Guajira Peninisula, Colombia, and northern 

 Venezuela in South America, is readily evident so that there has 

 been suggestion that veraguensis of Panama is also conspecific. My 

 series from Herrera indicates clearly that this is so. Anthracothorax 

 prevostii, in its currently accepted races, has the central area of the 

 chin and throat black, while in typical veraguensis this area is wholly 

 metallic green. In one adult male from Santa Maria, Herrera, the 

 central area of the throat is deep black, shading off laterally to merge 

 with the lateral green through edgings of that color, narrow at first 

 but increasing in extent, until the black is concealed. Another has 

 the hidden bases of the feathers on the upper throat black so that 

 from an angle where the light is not reflected this area has a blackish 

 cast. A third shows this same detail in lesser degree. The combina- 

 tion appears sufficient to justify listing the Panamanian population 

 as a subspecies under the species name prevostii. 



ANTHRACOTHORAX NIGRICOLLIS (Vieillot) : Black-throated 

 Mango, Mango Pechinegro 



Trochilus nigricollis Vieillot, Nouv. Diet. Hist. Nat., nouv. ed., vol. 7, March 

 1817, p. 349. (Brazil = Belem, Para.) 



Medium size; long, slightly curved bill ; two white tufts on flanks; 



