Base of primaries with white patch. Two white bands on wing _Series I._ No white bands on wing _Series II._ Base of primaries without white patch. Rump yellow. Crown with a yellow spot _Series III._ Crown without a yellow spot _Series IV._ Rump not yellow. Throat white (with black streaks in _striata_ and _pharetra_) _Series V._ Throat yellow or orange _Series VI._ Throat black, or mixed with black _Series VII._ _Series I._ 7. D. olivacea. ♂. Head and neck, all round, fine light orange-rufous; a broad black “spectacle” along side of the head. ♀. Head yellowish, dusky on top; spectacle obsolete. _Hab._ Whole of Eastern Mexico; Guatemala. _Series II._ 8. D. cærulescens. ♂. Head dark blue above and black underneath; a black patch covering whole lateral and under side of head and lateral lower parts. Rest of upper parts dark blue; bases of primaries and abdomen pure white. ♀. Above olive, with a light superciliary stripe; beneath wholly light greenish-buff; base of primaries white. _Hab._ Eastern Province of United States; in winter south into Cuba, Jamaica, and St. Domingo. _Series III._ 9. D. coronata. A yellow patch on each side of the breast; above ashy streaked with black; belly white. ♂. Breast more or less black; upper parts ash with a bluish tinge. ♀. Breast only streaked with black; ash of upper part grayish or brownish. Throat white; a white superciliary streak; two white bands on wing. _Hab._ Eastern Province of North America, north to Alaska and Greenland; in winter south to Panama and West Indies (resident in Jamaica!) … var. _coronata_. Throat yellow; no white superciliary streak; one white patch formed by the fusion of the two bands on the wing. _Hab._ Western Province of North America from British Columbia, south to Cape St. Lucas and Jalisco, Western Mexico; east to Rocky Mountains. … var. _auduboni_. _Series IV._ 10. D. maculosa. Whole lower parts bright yellow; black streaks across breast and along sides; crown ash; lores, auriculars, and back black. ♀ scarcely different. _Hab._ Eastern Province of North America, from Fort Simpson to Panama; Cuba and Bahamas. _Series V._ A. Above ashy-blue, or soft bluish-green. 11. D. cærulea. Lower parts pure white or greenish-white; with or without a narrow band across the breast; above fine ashy-blue, or soft bluish-green; if blue (♂), the back and crown streaked with black; if green (♀ and _juv._), these streaks obsolete. _Hab._ Eastern Province of United States (rare northward except in Mississippi Valley), south to Bogota in winter; Cuba.