477. 1. Mergulus Alle, Linn. Common Sea-Dove.

Plate CCCXXXIX. Male and Female.

Bill black, feet pale flesh-coloured, webs dusky, inside of mouth

light yellow; head, upper part of neck, and all the upper surface

glossy bluish-black; a small spot on the upper eyelid, another on the

lower, several longitudinal streaks on the scapulars, and a bar along

the tips of the secondary quills, together with the breast and

abdomen, white; feathers on the sides under the wings with the inner

webs dusky, lower wing-coverts blackish-grey. In winter, the throat,

and lower parts of the cheeks white, sides and fore part of the neck

white, the latter barred with blackish-grey; the other parts as in

summer, but the black duller.

_Male_, 7-1/8, 14-1/4.

Rare and only during winter along the coast of the United States, from

New York to Maine. More abundant along the coast of Nova Scotia, and

far at sea. Breeds on the Arctic coasts.

Little Auk, Alca Alle, Wils. Amer. Orn. v. ix. p. 94.

Uria Alle, Bonap. Syn. p. 425.

Little Guillemot, Uria Alle, Swains. & Rich. F. Bor. Amer. v.

ii. p. 479.

Little Auk or Sea Dove, Nutt. Man. v. ii. p. 531.

Little Guillemot, Uria Alle, Aud. Orn. Biog. v. iv. p. 304.

GENUS V. URIA, Lath. GUILLEMOT.

Bill generally shorter than the head, stout, compressed, tapering,

acute; upper mandible with the dorsal line slightly arched; the ridge

narrow, broader at the base, the sides sloping, the edges sharp and

inflected, the tip a little decurved, with a slight notch; nasal

groove broad, feathered; nostrils at its lower edge, subbasal,

lateral, longitudinal, linear; lower mandible with the angle rather

long, narrow, the dorsal line ascending and straight, the back very

narrow, the sides nearly flat, the edges sharp and inflected, the tip

acute. Head large, oblong; neck short and thick; body stout,

elongated, rather depressed. Feet short, placed far behind; the

greater part of the tibia concealed, its lower part bare; tarsus

short, stout, compressed, anteriorly scutellate; toes three, of

moderate length, middle toe longest, outer little shorter, scutellate,

connected by entire webs. Claws small, slightly arched, compressed,

rather acute. Plumage dense, very soft, blended. Wings rather short,

narrow, acute; primary quills curved, tapering, the first and second

longest; secondaries short, rounded. Tail very short, rounded, of

twelve or more feathers.

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