DESCRIPTION AND TECHNICAL OBSERVATIONS.

Genus Bernicla. Stephens, Continuation of Shaw’s Zoology, XII. p. 45,

(1824.)

Bill, small, shorter than the head, upper mandible elevated at the base,

tip with a broad nail, margins of both mandibles finely serrated. Wings,

long, pointed; tail, very short, rounded; tarsi, moderate; toes, rather

short. Probably contains six or eight species, inhabiting various parts

of the world.

Bernicla nigricans. (Lawrence.)

Anser nigricans. Lawrence, Annals N. Y. Lyceum, IV. p. 171, (1846.)

Form. Bill and head, and feet, rather small; wings, with the second

quill longest; tail, short, composed of sixteen feathers; coverts, both

above and below, long, reaching almost to the end of the tail.

Dimensions, according to Mr. Lawrence. Total length 22½ inches, alar

extent 44, bill along the ridge 1³/₁₆, from gap 1⅜, lower mandible 1¼,

length of tarsus 2¼, middle toe 2, outer 1⅞, inner 1½, weight 3 lbs.

Total length of skin from Delaware Bay, from tip of bill to end of tail

about 22 inches, wing 13¾, tail about 5 inches.

Colours. Male. Neck almost completely encircled by a band of white,

broadest immediately in front, and narrowest behind. Head, neck, breast

and abdomen, glossy black, having on the latter a brownish tinge. Upper

parts of the body umber brown, nearly black on the rump, some of the

feathers with paler margins; quills and tail feathers brownish black.

Feathers on the sides and flanks tipped with white; upper and under tail

coverts, and ventral region, white. Bill and feet dark, nearly black.

Hab. Atlantic coast, New Jersey. Spec. in Mus. Acad., Philada.

Obs. The Black Brant is nearly related to the common Brant (_B.

brenta_), but can readily be distinguished by the uniform black colour

of the inferior parts of the body, and the ring on the neck

uninterrupted in front, and not separated into two white patches on the

sides of the neck, as in the common species. It appears also to bear

some resemblance to the _Bernicla glaucogastra_, Brehm. Handb. Vogel

Deutschlands, p. 849 (Ilmenau, 1831), but may be distinguished from it

also by the characters just mentioned.

SYNOPSIS

OF THE

SPECIES OF BIRDS

INHABITING THE CONTINENT OF AMERICA, NORTH OF MEXICO.

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