FAMILY TROCHILIDAE 255 



George Vanderbilt Expedition. On May 26, 1963, Pedro Galindo 

 secured a female at La Laguna on the slopes of Cerro Tacarcuna. 



The 2 from Cerro Tacarcuna in the American Museum of Natural 

 History listed by Griscom (Bull. Mus. Comp. Zool., vol. 78, 1935, 

 p. 319), collected by H. E. Anthony April 11 and 17, 1915, were 

 taken near the head of the Rio Cuti, Choco, on the Colombian slopes of 

 the mountain. 



The minute serrations on the cutting edge of the bill, present on 

 one-third to one-half of the distal end, in males that I have examined 

 are longer, more slender, and more acutely pointed than in females, 

 and slant to the rear at an angle of 45 degrees. Those toward the tip 

 usually are larger so that they are easily visible to the unaided eye. 

 In adult females the dentations have shorter, more rounded points 

 that project at right angles to the cutting edge. A lens with low 

 magnification is necessary to observe them in detail. The use for 

 these structures is not known to me. 



GLAUCIS AENEA AENEA Lawrence: Bronzy Hermit, Ermitano 

 Bronceado 



Glands aeneus Lawrence, Proc. Acad. Nat. Sci. Philadelphia, December 1867 

 (March 10, 1868), p. 232. (Costa Rica.) 



A small hermit hummer, with the base of the rounded tail chestnut ; 

 back coppery bronze ; axillars and under tail coverts cinnamon. 



Description. — Length 105-110 mm. Male, crown dusky; rest of 

 upper surface coppery bronze, in some with a greenish cast ; upper 

 tail coverts tipped with cinnamon ; wings dusky with a faint violet 

 sheen ; middle rectrices bronze-green, with a narrow subterminal bar 

 of black and a white tip ; others rufous, with a broad subterminal black 

 band and white tip ; chin whitish ; rest of underparts, including under 

 wing coverts, axillars, and under tail coverts rusty cinnamon ; distinct 

 spot behind eye cinnamon ; broad band back of eye black. 



Female, under surface more uniform, and brighter rusty cinnamon. 



Immature, greater wing coverts and secondaries tipped very nar- 

 rowly with dull buff. 



Iris very dark brown; maxilla black; tip of mandible dusky, rest 

 dull reddish brown ; tarsus and toes cinnamon (like the color of the 

 under tail coverts) ; claws black. 



Measurements. — Males (13 from Nicaragua, Costa Rica, and Pan- 

 ama), wing 52.9-56.4 (54.5), tail 30.0-33.3 (31.8), oilmen from base 

 29.4-32.6 (31.3) mm. 



Females (10 from Nicaragua, Costa Rica, and Panama), wing 



