Their eggs vary in length from .61 to .70 of an inch, and in breadth from .49 to .52. They have a ground-color of a light green. Their dots and blotches vary greatly in number, size, and manner of distribution. Their colors are light purple, darker purplish-brown, and other shades of brown and lilac. Dendroica coronata, GRAY. YELLOW-RUMP WARBLER; MYRTLE WARBLER. _Motacilla coronata_, LINN. Syst. Nat. I, 1766, 333. _Sylvia coronata_, LATH.; VIEILLOT; WILS.; NUTT.; AUD. Orn. Biog. II, pl. cliii. _Sylvicola coronata_, SWAINS.; BON.; AUD. Birds, Am. II, pl. lxxvi.—JONES, Nat. Bermuda, 59 (abundant in April). _Dendroica coronata_, GRAY, Genera, 1842, 2.—BAIRD, Birds N. Am. 1858, 272; Rev. 187.—MARCH, P. A. N. Sc. 1863, 292 (Jamaica, in summer; breeding).—GUNDL. Cab. Jour. 1861, 326 (Cuba; common).—COOPER & SUCKLEY, P. R. R. XII, ii, 1859, 180 (Puget Sound).—SAMUELS, 226.—DALL & BANNISTER (Alaska).—COOPER, Orn. Cal. 1, 1870, 89. _Rhimanphus cor._ CAB. Jour. 1855, 473 (Cuba). _Motacilla canadensis_, LINN. 12th ed. 1766, 334 (_Ficedula canadensis cinerea_, Br. III, 524, pl xxvii, fig. 1). _Parus virginianus_, LINN. 12th ed. Syst. Nat. I, 1766, 342. _Motacilla umbria, cincta, pinguis_, GM. _Sylvia xanthopygia_, VIEILL. _Sylvia xanthoroa_, VIEILL. Localities quoted: _S. Greenland_, REINHARDT, Ibis, 1861, 5. _Cordova_, SCL. P. Z. S. 1856, 291. _Xalapa_, IB. 1859, 363. _Guatemala_, SCL. & SALV. 1859, 11. _Panama_, LAWR. Ann. N. Y. Lyc. VIII, 63. _Cuba_, winter, CAB. Jour. III, 473. _Bahamas_, winter, BRYANT, Bost. Pr. VII, 1859. _Jamaica_, GOSSE, Birds Jam. 155. _St. Domingo_, SALLÉ, P. Z. S. 1857, 231. _Costa Rica_, LAWR. _Orizaba_, winter, SUMICHRAST. SP. CHAR. Above bluish-ash, streaked with black. Under parts white. The forepart of breast and the sides black, the feathers mostly edged narrowly with white. Crown, rump, and sides of breast yellow. Cheeks and lores black. The eyelids and a superciliary stripe, two bands on the wing and spots on the outer three tail-feathers, white. _Female_ of duller plumage and browner above. Length, 5.65; wing, 3.00; tail, 2.50. HAB. Eastern Province of North America, and northward, extending sparsely along United States boundary to Pacific Ocean; Denver City, Colorado; Fort Yukon; Greenland; Eastern Mexico to Panama R. R.; Western West Indies and Bermuda. Breeds in Jamaica! Autumnal and winter birds are very much duller and more obscurely colored, the upper parts of an umber cast with the streaks almost obsolete; the black of the breast wanting or but just indicated, and the yellow patches on crown almost concealed by the brown tips to the feathers, and those on side of breast quite dull. A spring male (52,283) from Washington is remarkable in having the adjoining series of feathers down the middle of the back with their inner webs broadly edged with yellow. In this respect it differs from all others that we have noticed.