Bill at least as long as the head, extremely slender, straight, nearly cylindrical, towards the end tapering; upper mandible with the dorsal line straight, unless at the end, where it is a little decurved, the ridge broad and depressed, the sides slightly sloping, the edges rounded, and inflected towards the narrow acute tip; nasal groove long, linear; lower mandible with the angle very long and narrow, the sides convex, the tip narrowed. Head small, with the fore part high and rounded; neck of moderate length; body rather slender. Feet moderate, slender; tibia bare at the lower part; tarsus extremely compressed, narrowed before and behind, covered anteriorly with numerous scutella; toes slender, first extremely small, free, with a slight membrane beneath, second slightly shorter than fourth; toes all scutellate above, the anterior webbed at the base, and margined on both sides with a lobed or sinuated membrane. Claws very small, arched, compressed, acute. Plumage soft, and blended. Wings long and pointed, the first quill longest; inner secondaries very long and tapering; tail of twelve feathers rounded or nearly even. Tongue extremely slender, grooved above, tapering to a horny point; œsophagus narrow, uniform; stomach rounded, muscular, with the epithelium dense and longitudinally rugous; intestine of moderate length and width; cœca rather long. Trachea much flattened, with a single pair of inferior laryngeal muscles. 341. 1. Lobipes hyperboreus, Lath. Hyperborean Lobefoot. Plate CCXV. Male and Female. Bill about the same length as the head, membranes of the toes scolloped, tail much rounded; upper parts greyish-black, the head lighter and more tinged with grey, the scapulars and some of the feathers of the back edged with yellowish-red, of which colour are the sides of the head and neck; throat and sides of the upper part of the neck white; wing-coverts and quills brownish-black, tinged with grey, the shafts of the quills, margins, and tips of secondaries, and a broad bar on the tip of the secondary coverts white; tail light grey, the feathers margined with white, the two middle dark brownish-grey, lateral upper tail-coverts white, barred with dusky; breast and abdomen white. Young similar, but with the colours paler. _Male_, 6, 13-1/2; wing 5-3/4. Rarely seen south of New York. Plentiful at some periods from Massachusetts to Maine. Abundant in the Bay of Fundy during spring and autumn. Breeds in Labrador and along all the Arctic coast. Migratory. Phalaropus hyperboreus. Bonap. Syn. p. 342. Hyperborean Phalarope, Nutt. Man. v. ii. p. 239. Hyperborean Phalarope, Phalaropus hyperboreus, Aud. Orn. Biog. v. iii. p. 118; v. v. p. 595. 342. 2. Lobipes Wilsonii, Sabine. Wilson's Lobefoot. Plate CCLIV. Male and Young.