ICTERUS. Head all round deep black, sharply defined against the yellow of the nape; wings black, with or without white markings. Body generally, including lesser wing-coverts, deep greenish-yellow (intense orange-red in some South American species). I. vulgaris. Feathers of the throat elongated and lanceolate. Bill longer than head. Back and scapulars black; greater coverts and tertials with much white on outer webs; middle wing-coverts white. Rest of plumage, including lesser coverts, chrome-yellow. Sexes alike. _Hab._ Northern South America. Jamaica? Accidental in southeastern United States? ? Several races. I. melanocephalus. Feathers of the throat not elongate and lanceolate, but soft and normal; bill shorter than head. Back and scapulars greenish-yellow. Rest of plumage, including lesser wing-coverts, gamboge-yellow. Sexes alike. Wings without any white. Wing, 4.00; tail, 4.00; culmen, .95; tarsus, .96. _Hab._ Southern Mexico var. _melanocephalus_. Wings with white edgings to greater coverts, secondaries and tertials. Wing, 4.25; tail, 4.40; culmen, 1.10; tarsus, 1.10. _Hab._ Northern Mexico and Rio Grande Valley of United States var. _auduboni_. XANTHORNUS. Back, scapulars, wings, tail, and throat, black; wings and tail with, or without, white. Rest of plumage greenish-yellow, gamboge-yellow, orange, orange-red, or chestnut-rufous. A. Head and neck, all round, deep black. _a._ Tail-feathers wholly black. I. dominicensis. Head, neck, back, scapulars, wings, tail, and jugulum, deep black; lesser and middle wing-coverts, lining of the wing, anal region, tibiæ, and rump, deep gamboge-yellow. No white on wings or tail. Sexes similar (in all the races?). _Abdomen and sides yellow._ Tail-coverts partially or wholly yellow. Wing, 3.25 to 3.50; Tail, 3.75 to 4.00; culmen, .80; tarsus, .85. _Hab._ South Mexico to Costa Rica var. _prosthemelas_.[35] Tail-coverts uniform black. Wing, 3.75; tail, 4.50; culmen, .80; tarsus, .90. _Hab._ Mexico and Guatemala var. _wagleri_. _Abdomen and sides black._ Flanks and crissum yellow; upper tail-coverts yellow. Wing, 3.50; tail, 3.50; culmen, .80; tarsus, .85. _Hab._ Hayti var. _dominicensis_.[36] Flanks black; crissum mostly yellow; upper tail-coverts black. Wing, 3.75; tail, 4.00; culmen, .93; tarsus, .85. _Hab._ Porto Rico var. _portoricensis_.[37]