Adult, 10, wing, 63/4.

North-west coast of America.

Alca cristatella, Gmel. Syst. Nat. v. i. p. 552.

Curled-crested Phaleris, Phaleris cristatella, Aud. Orn. Biog. v. v. p. 102.

476. 2. Phaleris nodirostris, Bonap. Knobbed-billed Phaleris.

Plate CCCCII. Fig. 3. Adult.

Bill deep red, much shorter than the head, stout, upper mandible with a roundish, compressed, decurvate, greyish-blue knob on its ridge, between the nostrils, which are covered by a projecting operculum; tail of fourteen feathers; feet dusky grey; general colour of upper parts brownish-black; fore part and sides of head streaked with linear, acuminate, white feathers; tips of secondaries also white; cheeks and a small portion of the throat at the base of the bill dusky; lower parts white, mottled with dusky, the tips of the feathers being of that colour.

Adult, 6, wing, 4.

North-west coast of America.

Knobbed-billed Phaleris, Phaleris nodirostris, Bonap. Aud. Orn. Biog. v. v. p. 101.

GENUS IV. MERGULUS, Ray. SEA-DOVE.