258 BIRDS OF THE REPUBLIC OF PANAMA PART 2 



coverts and the two middle rectrices metallic green to greenish bronze, 

 changing to dusky on the forecrown; upper tail coverts edged with 

 grayish white to pale cinnamon ; lateral rectrices chestnut, with a 

 terminal band of dull black and a white tip ; wings dusky with a faint 

 violet sheen ; chin white ; foreneck, breast, and sides dull russet ; 

 abdomen paler ; axillars and under tail coverts pale dull cinnamon- 

 buff to gray centrally edged with dull white ; anterior under wing co- 

 verts and line of edge of wing russet. 



Female, brighter russet below especially on the side of the neck and 

 breast. 



Immature, feathers of dorsal surface more bronze-green, tipped 

 with dull buff ; sides of breast greenish bronze tipped lightly with buff 

 extending along sides of neck ; throat with a V-shaped mark of 

 blackish slate ; chin dull white. 



A male, taken at Armila, San Bias, March 11, 1963, had the iris 

 dark brown ; a thin line along the side of the maxilla extending from 

 the nostril, below the culmen, to the middle of this part of the bill 

 dull cinnamon-buff ; rest of maxilla and tip of mandible black ; rest of 

 mandible and gape honey yellow ; tarsus light brown ; toes more buff ; 

 claws black. 



A female, shot at Juan Mina, Canal Zone, January 12, 1955, had 

 the bare nostrils, maxilla, and the tip of the mandible fuscous ; rest of 

 mandible and tongue light honey yellow ; tarsus flesh color ; toes honey 

 yellow ; claws black. When the bill was closed the yellow side of the 

 mandible was enclosed completely within the maxilla, so that only 

 on the gonys was the yellow color visible. 



Measurements. — Males (10 from Panama), wing 58.4-64.0 (60.8), 

 tail 36.6-40.8 (38.4), culmen from base 31.8-33.4 (32.8) mm. 



Females (10 from Panama), wing 53.8-57.3 (55.0), tail 33.2-35.8 

 (34.1), culmen from base 31.0-34.0 (32.6) mm. 



Weight, 1 male, 6.95 grains ; 5 females 6.13 ±0.32 grams (Hartman, 

 Auk, 1954, p. 468). 



Resident. In the Tropical Zone on the Pacific slope from the Canal 

 Zone (Tabernilla, Corozal), and on the Atlantic slope from the Carib- 

 bean side of Code (El Uracillo) and western Colon (Chilar, on the 

 lower Rio Indio) eastward to the Colombian boundary in Darien 

 (El Real, Boca de Paya) and San Bias (Mandinga, Armila, Puerto 

 Obaldia). 



A hummingbird of this size and general color pattern that I saw 

 December 23, 1955, in a tract of forest on Isla Taboga may have been 

 this species. 



