a. Crown without any rufous, or with only a tinge.
2. D. petechia. Nape olive-green (except in juv.); sides streaked (except in juv.). Crown greenish, sometimes tinged with orange-rufous anteriorly; lower webs of wing-coverts, etc., not pure yellow, and rump and upper tail-coverts without any admixture of yellow. Hab. West Indies (except Barbadoes and Trinidad); not on the Continent.
Lower part of throat streaked; outer webs of wing-coverts hardly appreciably different from the general surface. Above golden yellowish-olive; crown generally without a trace of rufous. Wing-formula, 2 = 3, 4, 1, 5; wing, 2.55; tail, 2.10; bill, .30; tarsus, .80. Hab. Cuba and the Bahamas … var. gundlachi.[39]
Lower part of throat not streaked; outer webs of wing-coverts decidedly yellowish, and quite different from the general surface. Above greenish yellow-olive; crown almost always strongly tinged
with rufous. Wing-formula, 4, 3, 2, 5, 1, 6; wing, 2.70; tail, 2.25; bill, .35; tarsus, .79. Hab. Jamaica and Hayti? … var. petechia.[40]
Whole throat sometimes streaked; back also sometimes with streaks of dark castaneous; green above lighter than in var. petechia, the rump sometimes tinged with yellow. Wing-formula, 2, 3, and 4 equal, 5 = 1; wing, 2.50; tail, 2.00; bill, .34; tarsus, .78. Hab. Porto Rico, St. Thomas, St. Croix, and St. Bartholomew. … var. ruficapilla.[41]
3. D. aureola.[42] Nape always ashy; sides never streaked. Abdomen, anal region, and axillars nearly white; forehead and crown strongly tinged with rufous; nape dark ashy. Wing-formula, 2, 3, and 4 equal, 5, 1 = 6; wing, 2.55; tail, 2.00; bill, .32; tarsus, .75. Hab. Galapagos Islands.
b. Crown with only a sharply defined ovate patch of dark purplish-rufous.
4. D. capitalis.[43] A broad superciliary stripe of pure yellow; wing-formula, 3 = 4, 2, 1 = 5; wing, 2.30; tail, 2.00; bill, .30; tarsus, .70. (♀ distinguishable from that of the varieties of petechia by the distinctly yellow upper eyelid, and considerably shorter tarsus.) Hab. Barbadoes Island, West Indies.
c. Head all round rufous.