BIRDS— ANSERINAE — BERNICLA LEUCOFAREIA. 
765 
the bill is shorter than the head. At present I do not see the way clear to do else than con- 
sider them as one species, leaving it for further materials to decide the question. 
One specimen, 9554, from Simiahmoo hay, is the smallest of all, and would be taken for 
Bernida liutchinsii, but for the possession of eighteen tail feathers. In the yellowish color of 
the under parts, the small bill and feet, and in its diminutive size, it approaches very closely to 
the Anser parvipes of Cassin from Vera Cruz, and may possibly represent the same form or 
variety of B. canadensis, or even with it constitute a distinct species, which, however, I am 
scarcely inclined at present to admit. 
List of specimens. 
Catal. 
No. 
Sex. 
Locality. 
When col- 
lected. 
Whence obtained. 
Collected by— 
Length. 
Stretch 
of wings. 
Wing. 
2128 
1192 
9961 
9954 
5471 
10401 
9962 
9554 
3 
9 
Carlisle, Perm 
Potomac river, D. C . . . „ . . 
Dec, 1843 
S. F. Baird 
35. 00 
37.50 
63. 50 
G3. 50 
18.00 
18. 00 
do. 
Frontera, Texas 
Major Emory 
Lieut. Whipple 
Lieut. Warren 
J. H. Clark 
Rio Rita, Laguna, N, M-- 
Nov., 1853 
Kenn.&Moll.. 
Dr. Hayden 
3 
Salt Lake 
Lieut. Trowbridge . 
A. Campbell 
T. A. Szabo, 
October 9... 
Dr. Kennerly. 
BERNICLA LEUCOPAPiEIA, Cassin. 
Ansa- latcopareius, Brandt, Bull Sc. Acad, St. Petersb. 1, 183C, 37, (Aleutians.) — Ib. Desc. et Icones Anim. Ross. Aves, 
fasc. i, 1836, 13; plate ii. 
t Bernicla leucoparcia, Cassin, 111. I, 1855, 272 ; pi. xlv. 
Anser canadensis, Pallas, Zoog. Rosso- As. II, 1811, 230. 
Sp. Ch. — Tail of eighteen feathers ; general appearance that of A. canadensis, but much darker ; head and neck black, bounded 
iDferiorly by a well defined half riDg of white on the throat; a white patch on each cheek, the two confluent below, triangular 
on the sides and truncate above; the posterior outlioe perpendicular, the anterior sloping backwards behind the eye, almost 
exactly as in A. canadensis; there is a faint whitish patch on lower eyelids; upper parts dark wood brown, turning gradually 
nto black on the rump, tail and primary quills, each brown feather of the fore back and wings with a rather paler edge. The 
under parts are very dark brown, as dark as the back of A. canadensis, paler along the middle of the belly, the sides as dark as 
the back ; each feather has an obsolete margin of lighter ; the region round anus is white, abruptly defined against the brown of 
the belly; the under and upper tail coverts are white; the bill is quite short, the culmen about half the tarsus, which is 
decidedly longer than the middle toe. Length about 35 inches ; wing, 18 ; tarsus, 3.44 ; commissure, 1.90. 
Hab. — West coast of America. 
This species closely resembles the Canada goose, and, like it, has 18 tail feathers. It is a little 
smaller, however, and much darker, standing almost in the same relation to it that B. nigricans 
does to B. hrenta. The belly is as dark as the back of A. canadensis, the color abruptly defined 
against the white about the anus. The white half ring round the neck is a conspicuous feature. 
The bill is proportionally shorter, the culmen being only half the length of tarsus, while the 
tarsus is longer, exceeding the middle toe, instead of being smaller by the length of the nail. 
This species agrees very well in its peculiar proportions of bill and tarsus with B. leucopareia 
of Brandt, and quite well in color, excepting that in the latter, as described by Brandt, the white 
