TROCHILVS. 313 



/'. Lateral tail-feather in adult male rot distinetlj- narrower 

 than tho rest ; rump and upper tail-coverta metallic 

 blue (in both sexes). 

 Adult male: Head, including ruflf, metallic purplish 

 red; length about 2.50, wing 1.10-1.15, tail .65, 

 culmen .40. (Female slightly larger.) Hub. Cuba. 

 T. helenae (Gundl.). Princess Helena's Hummingbird.' 

 e*. Tail with more or less of rufous, more or less graduated (mid- 

 dle feathers longest, or equal to longest) in both sexes; 

 adult males with top of head greenish or bronzy, totally' 

 different from color of gorget (except in T. florcsii). (Sub- 

 genus Selasphonis Swai.ns.) 

 /'. Middle pair of tail-feathers entirely green ; gorget of adult 

 male soft, rather light, rose-purple, or solferino; wing 

 more than 1.90. 



Adult male: Tail-feathers, except middle pair, dull 

 purplish black, the next to middle pair distinctly 

 edged with rufous (the next pair sometimes nar- 

 rowly edged with same) ; length about 4.00-4.25, 

 ■wing 1.92-2.05, tail 1.40-1.60, exposed culmen .62- 

 .70. Adult female: Three outer tail-feathers rufous 

 at base and broadly tipped with white, the inter- 

 vening space blackish, with some green next to 

 rufous on second and third feathers; fourth feather 

 green to extreme base, but edged with rufous and 

 marked by a large terminal or subterminal spot 

 of black ; length about 4.10-4.70, wing 2.00-2.10, 

 tail 1.45-1.50, exposed culmen .70-.72. Er/gs .50 

 X -33. Mab. Rocky Mountains of United States, 

 north to Wyoming, Montana, and Idaho Territo- 

 ries, west to Sierra Nevada (?), south over table- 

 lands of Mexico to highlands of Guatemala. 



432. T. platycercus Sw.m.ns. 

 Broad-tailed Hummingbird. 

 /'. Middle tail-feathers partlj- rufous; gorget of adult male 

 intenselj- brilliant metallic fire-red, changing to orange, 

 brassj' green, and crimson, the feathers much length- 

 ened laterally and posteriori}- ; wing less than 1.90. 

 (;'. Adult males with top of head dull bronzy or green- 

 ish, the middle tail-feathers rufous, marked on ter- 

 minal portion with a duskj- mesial streak, the outer 

 feather with inner web entirely rufous, the bell}-, 



' Orthorhynchut hclena "Gundl., sus mnruscritos," Lejib., Avcs dc la Isla de Cuba, 1850, 70, pi. 10, fig. 2. 

 Cali/pte heUnx GocLD, Mod. Trocb, iii. pi. 136. 



