Family VIII. SYLVICOLINAE. WOOD-WARBLERS.
GENUS III. TRICHAS, Swains. GROUND-WARBLER

Bill of moderate length, similar in form to that of Sylvicola, differing only in being a little decurved. The general form does not differ materially from that of Sylvicola, the head being ovate and of moderate size, the neck short, the body rather slender; the feet of moderate length, slender; tarsus slender, much compressed, longer than the middle toe with its claw, anteriorly covered with eight scutella, of which the upper are blended; toes of moderate size, hind toe proportionally large, lateral toes equal, fourth adherent at the base; claws rather long, arched, much compressed, laterally grooved, very acute. Plumage soft and blended. Wings rather short, convex, considerably rounded, the third and fourth quills longest, the fifth little shorter. Tail of moderate length, rounded, always plain, or without white spots.