200 BIRDS OF THE REPUBLIC OF PANAMA — PART 2 



hung like a beard below. A typical nest had an external diameter of 

 50 mm., with the cavity 40 mm. across by 25 mm. deep. The single 

 egg, with one side broken, that came to the U. S. National Museum in 

 his collection, measures 16.3x9.0 mm. In form it resembles those 

 collected by Goldman. Jewel (in Stone, Proc. Acad. Nat. Sci. Phila- 

 delphia, vol. 70, 1918, p. 254) gives the measurements of a set of 2 

 taken May 7, near Gatun, as ".35 X .61 and .34 X .62 in." (equivalent to 

 15.4x8.9 and 15.7x8.6 mm.) 



A nest in the Royal Ontario Museum in Toronto, collected by 

 O. D. Boggs, December 13, 1945, at El Centro in northwestern 

 Santander, Colombia, was fastened to the underside of a palm leaf. 

 Attached to the deep cup of fine filaments, there is an elongated 

 pendant train of small dried leaves, the whole bound by filaments of 

 spider web. 



THRENETES RUCKERI (Bourcier) : Rucker's Hermit, Ermitano 

 Barbudo 



Trochilus Rackeri Bourcier, Proc. Zool. Soc. London, pt. 15, May 1847, p. 46. 

 (Esmeraldas, Ecuador.) 



Similar to the hairy hermit, but with a black throat patch and white 

 base on the rounded tail. 



Description. — Length 110-122 mm. Adult (sexes alike), upper 

 surface, including wing coverts and central tail feathers, bronze-green 

 or green, darker on the crown ; upper tail coverts with a narrow distal 

 black line, tipped with buff; outer tail feathers with basal half white, 

 broadly black distally, tipped with white; wings dusky with a faint 

 violaceous gloss ; side of head dull black bordered above and 

 below with a line of buff or cinnamon ; chin and upper throat dusky 

 black, the feathers edged lightly with dull buff or cinnamon ; lower 

 foreneck and upper breast cinnamon-rufous, changing to pale buffy 

 gray on breast and abdomen, with the flanks more or less cinnamon- 

 rufous ; under tail coverts bronzy green or green, margined with 

 cinnamon ; outer under wing coverts black, inner ones dark gray. 



Immature, upper surface edged lightly with dull buff ; cinnamon of 

 foreneck less in amount, bordered above and below by greenish black, 

 edged lightly with pale cinnamon. 



This is a forest inhabitant that in the main ranges in or just above 

 the undergrowth. Though the pattern of markings is distinct, the bird 

 is so similar in form and action to the hairy hermit that the two may 

 be confused when not seen clearly. This species at rest regularly 

 swings the tail up and down, in the same manner as the longer tailed 



