RUCKER'S HERMIT 



upper throat metallic green 



(black from front) 



Polyerata amabilis 



jj. Crown metallic green (not bril- 

 liant like remaining upper 

 parts); chin and upper throat 



metallic violet blue 



Lepidopyga caruleogularis 



ff. No bright metallic violet blue or bluish 

 purple in under parts. 



g. Very small; tail metallic blackish blue, 

 decidedly forked; under parts glitter- 

 ing metallic grass green ; bill short .... 

 Chlorostilbon assimilis 



gg. Larger; tail not blackish blue and not 

 decidedly forked. 



h. Bill medium; tail bright chestnut; 

 throat and chest bright metallic 

 emerald green AmazUia t. tzacatl 



hh. Bill very long and straight ; tail metal- 

 lic green tipped with white on outer 

 feathers; crown bright metallic 

 greenish blue; throat bright metallic 

 magenta. .Anthoscenus I. longirostris 



i. Threnetes ruckeri dariensis Bangs 

 Rucker's Hermit 



Threnetes ruckeri RIDGWAY, Birds of N. and M. Amer., 

 V, p. 336, 1911; STONE, Proc. Phila. Acad. Nat. Sci., 1918, 

 P- 253- 



Sexes alike. Length, about no mm. (4.30 

 in.); tail, about 33 mm. (1.30 in.). Above 

 metallic bronzy green, including middle pair of 

 tail feathers ; remaining tail feathers black, white 

 for basal half, and all tipped with whitish; a 

 patch under eyes and ear coverts dusky, outlined 

 below by a buffy streak through cheeks, and 

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