Q. purpureus. a. Body uniform brassy-olive without varying tints. Head and neck steel-blue, more violaceous anteriorly.
1. Length, 13.50; wing, 5.50 to 5.65; tail, 5.70 to 5.80, its graduation, 1.50; culmen, 1.35 to 1.40. Vivid blue of the neck all round abruptly defined against the brassy-olive of the body. Female. Wing, 5.20; tail, 4.85 to 5.10. Hab. Interior portions of North America, from Texas and Louisiana to Saskatchewan and Hudson’s Bay Territory; New England States; Fort Bridger, Wyoming Territory … var. æneus.
b. Body variegated with purple, green, and blue tints. Head and neck violaceous-purple, more blue anteriorly.
2. Length, 12.50; wing, 5.60; tail, 5.30, its graduation, 1.20; culmen, 1.32. Dark purple of neck all round passing over the breast, and appearing in patches on the lower parts. Wing and tail purplish; tail-coverts reddish-purple. Female. Wing, 5.10; tail, 4.50. Hab. Atlantic coast of United States … var. purpureus.
3. Length, 11.75; wing, 4.85 to 5.60; tail, 4.60 to 5.50, its graduation, .90; culmen, 1.38 to 1.66. Dark purple of neck sharply defined against the dull blackish olive-green of the body. Wings and tail greenish-blue; tail-coverts violet-blue. Female. Wing, 4.65 to 4.90; tail, 3.80 to 4.60. Hab. South Florida; resident … var. agelaius.
B. HOLOQUISCALUS. (Cassin.) Tail shorter than wings; sexes similar. Color glossy black, but without varying shades of gloss; nearly uniform in each species. Tail moderately graduated. Hab. West India Islands, almost exclusively; Mexico and South America.
Q. baritus. Black, with a soft bluish-violet gloss, changing on wings and tail into bluish-green.
Culmen decidedly curved; base of mandibles on sides, smooth.
1. Bill robust, commissure sinuated; depth of bill, at base, .54; culmen, 1.33; wing, 6.15; tail, 5.50, its graduation, 1.30. Female. Wing, 5.20; tail, 4.70; other measurements in proportion. Hab. Jamaica … var. baritus.[43]
2. Bill slender, commissure scarcely sinuated; depth of bill, .43; culmen, 1.35; wing, 5.40; tail, 5.10, its graduation, 1.20. Female. Wing, 4.60; tail, 4.20. Hab. Porto Rico … var. brachypterus.[44]