252 BIRDS OF THE REPUBLIC OF PANAMA — PART 2 



Mandible yellow to orange-yellow except for black tip; adult male with 

 foreneck green, rest of under surface blue; female and young male dull 

 white below, without white spot behind eye. 



Violet-bellied hummingbird, Damophila julie panamensis , p. 312 



49. With crown glittering light green or blue, in contrast with 



dull green back 50 



Crown and back uniform metallic green 52 



50. Crown shining deep blue, hindneck and back metallic green. 



Violet-crowned hummingbird, Klais guimcti merrittii, adult male, p. 296 

 Crown glittering light green, hindneck and back dull metallic 

 green 51 



51. Bill shorter, culmen 17.5-20.3 mm.; middle rectrices purplish bronze. 



Lovely hummingbird, Amazilia amabilis, adult male, p. 325 

 Bill longer, culmen 21.5-25.7 mm.; middle rectrices greenish bronze. 



Charming hummingbird, Amazilia decora, adult male, p. 323 



52. Foreneck with a gorget of glittering orange-red, or entirely 



deep shining blue 53 



Foreneck white or grayish white, plain, or spotted with dusky, 

 dull green or dull greenish blue 54 



53. Foreneck with a gorget of glittering orange-red. 



Ruby-throated hummingbird, Archilochus colubris, adult male, p. 370 

 Foreneck and upper breast deep shining blue. 



Sapphire-throated hummingbird, Lcpidopyga cocruleogidaris 



coerulcogularis, adult male, p. 315 



54. Foreneck white or light gray, without markings 55 



Foreneck heavily spotted 58 



55. Breast, abdomen and under tail coverts clear white ; a somewhat 



indefinite breast band of dull green. 



Sapphire-throated hummingbird, Lcpidopyga coerulcogularis 



coerulcogularis, female and immature male, p. 315 

 Without a green breastband 56 



56. Bill short, culmen less than 16 mm. 



Violet-crowned hummingbird, Klais guimeti merrittii, female 



and immature male, p. 296 

 Bill longer, culmen 17.0-23.6 mm 57 



57. Upper surface bronze-green, breast and abdomen whiter ; smaller ; wing 



less than 46 mm. 



Ruby-throated hummingbird, Archilochus colubris, female, p. 370 

 Upper surface metallic glittering green; breast and abdomen gray to 

 grayish white ; wing 48.0-50.9 mm. 



Fork-tailed woodnymph, Thalurania jurcata, female and immature 



male, p. 306 



58. Smaller, wing less than 46.0 mm.; throat finely spotted with dusky. 



Ruby-throated hummingbird, Archilochus colubris, immature 



male, p. 370 



Larger, wing more than 48.0 mm.; throat heavily spotted with metallic 



green to greenish blue 59 



59. Bill shorter, culmen 19.0-20.3 mm. ; middle rectrices purplish bronze. 



