Family XIII. MOTACILLINAE. WAGTAILS.
GENUS II. ANTHUS, Bechst. PIPIT
Bill of moderate length, straight, very slender, as broad as high at the base, compressed toward the end; upper mandible with the ridge narrow at the base, the notches slight, the tip a little deflected; lower mandible with the dorsal line straight, the edges involute, the tip acute. General form very slender. Tarsus of moderate length, much compressed; toes slender; claws arched, extremely compressed, acute, that of the hind toe much elongated. Plumage soft and blended. Wings long; the outer three quills about equal and longest; inner secondaries tapering, one of them nearly as long as the outer primaries when the wing is closed. Tail rather long, emarginate.