E. brunneus.[89] Third quill longest, first equal to seventh; tail slightly rounded. Russet-olive above, the crown, wings, and tail with a reddish-brown tinge; a yellowish-gray shade across the breast, and a faint sulphur-yellow tinge to posterior lower parts. Wing-bands broad, sharply defined, deep ochraceous; lining of wing and tibiæ slightly tinged with the same. Wing, 2.35; tail, 2.30; bill, .57 and .27; tarsus, .56; middle toe, .33. Hab. Parana.
E. axillaris.[90] Third quill longest, first equal to seventh; tail? Dark grayish-brown above, nearly uniform, breast ochraceous-olive; a just appreciable tinge of sulphur-yellow on abdomen. Wing-bands narrow, badly defined, in color nearly like the back; lining of the wing and tibiæ very deep ochraceous. Wing, 2.40; tail, 2.50; bill, .60 and .30; tarsus, .60; middle toe, .43. Hab. Orizaba.
b. Olive-green above, yellow beneath; tibiæ greenish.
E. flavescens.[91] Third, or third and fourth quills longest; first equal to eighth. Tail decidedly emarginated. Intense greenish-olive above, the crown with a decided russet tinge; beneath bright lemon-yellow, with a shade of fulvous-brown across the breast. Wing, 2.35 to 2.70; tail, 2.20 to 2.40; bill, .59 and .30; tarsus, .66; middle toe, .35. Hab. Costa Rica.
E. bairdi.[92] Fourth quill longest, first shorter than eighth. Tail slightly emarginated. Dull greenish-olive above, nearly uniform; beneath clear sulphur-yellow, with a greenish-olive shade across the breast. Wing, 2.60; tail, 2.50; bill, .62 and .29; tarsus, .65; middle toe, .35. Hab. Eastern Mexico (Mirador).
B. Inner webs of secondaries edged with yellowish or grayish white.
a. Olive-green above, yellowish beneath.
§. Young not mottled above.
E. flaviventris. Bill broad, twice as wide as deep, and the culmen less than twice the breadth. Outer web of lateral tail-feather dusky, like the inner. Wing-bands narrow, whitish. Tail square.
Clear olive-green above, sulphur-yellow beneath; wing-bands sulphur-yellowish; lining of wing clear sulphury-yellow. Wing,