Empidonax flaviventris. Descriptions of First Plumage of Certain North Am. Ebs. Wm. Brewster. 89. Empidonax flaviventris. First plumage: male. Above uniform yellowish-olive. Beneath dull yellow, with a brownish cast, tinged strongly with olive upon the throat, breast, and sides. Wing-bands brownish-yellow. Altogether very similar in general appearance to the adult. From a specimen in my collection shot at Upton, Me., August 4, 1874. Bull. N.O.C. 3, Oct., 1878. p. /78.