FAMILY TROCHILIDAE 253 



Lovely hummingbird, Amasilia amabilis, female and immature male, p. 325 

 Bill longer, culmen 22.5-25.7 mm.; middle rectrices greenish bronze. 

 Charming hummingbird, Amasilia decora, female and immature male, p. 323 



60. Entire tail dull bronze, definitely paler than green of back; under surface 



clear white centrally from lower foreneck through abdomen. 



White-bellied mountain-gem, Lampornis hemilencus, p. 349 



Tail darker, green or dark blue, bronze markings if present confined to 



central pair; lower surface in most varicolored; if mainly white, spotted 



with green across breast 61 



61. A definite band of dark blue on cheeks 62 



Without a blue band on cheeks 63 



62. Body plumage, above and below, dark metallic green. 



Green violet-ear, Colibri thalassinus cabanidis, p. 291 



Body plumage grayish brown to olive ; rump feathers edged with cinnamon. 



Brown violet-ear, Colibri delphinac delphinae, p. 289 



63. Entire crown, including forehead, bright glittering green or blue, distinctly 



different from back 64 



Forecrown dull blue, rest dull green; or entire crown dull green like 

 back 66 



64. Crown and center of breast shining dark blue. 



Fiery-throated hummingbird, Panterpe insignis, p. 310 

 Crown and breast shining metallic green 65 



65. Large; nasal operculum completely feathered; a glittering blue spot on 



throat ; chin shining metallic green like breast. 



Green-crowned brilliant, Heliodoxa jacula, p. 357 

 Of medium size ; anterior end of nasal operculum bare ; a large gorget, 

 extending over chin, white or purple. 



Variable mountain-gem, Lampornis castaneoventris, adult male, p. 350 



66. Bill black ; under surface cinnamon-buff, without markings ; or metallic 



green, mottled on breast and foreneck with white 67 



Bill particolored, basal half of mandible orange to red 69 



67. Under surface cinnamon-buff from chin to abdomen. 



Variable mountain-gem, Lampornis castaneoventris, female, p. 350 

 Under surface metallic green mottled with white, light gray, or dull buff . 68 



68. Tail metallic green, banded subterminally with bluish black ; cheeks grayish 



brown; throat feathers green edged with white to produce a squamate 

 pattern. 



White-necked Jacobin, Florisnga mellivora mellivora, immature, p. 287 

 Only the central pairs of rectrices green, rest of tail bluish black ; cheeks 



green ; foreneck white with many large spots of metallic green. 

 Green-crowned brilliant, Heliodoxa jacida, female and immature male, p. 357 



69. Size large, wing 66-75, tail more than 40 mm. ; lower breast and abdomen 



dull cinnamon buff ; under tail coverts dark centrally. 



Cuvier's hummingbird, Phaeochroa cuvierii, p. 282 

 Size medium, wing 58-64, tail 31-36 mm.; center of breast, abdomen and 

 under tail coverts white. 



Blue-headed sapphire, Hylocharis grayi hnmboldtii, p. 319 



