ADDITIONAL REMARKS. 925 
The essential characters of J. caniceps consist in the reddish bill, with slight black tip, the 
well marked rufous confined strictly to the middle of the back, and not extending on the wing 
coverts at all. The head and neck all round are grey or ash, this color extending on the sides, 
leaving the middle of belly only white, as in the J. hyemalis, from which the red back distin- 
guishes it. It shares the red bill with hyemalis and oregonus, both J. cinereus and dorsalis 
having the upper mandible black, the lower yellow. 
Poospizi BILINEATA, Sclater, p. 470.—Big Cafion of Colorado. Lieut. Ives—H. B. Millhausen. 
Prucara ruriceprs, Baird, p. 486.—Fort Tejon. J. Xantus de Vesey. 
PASSERELLA SCHISTACEA, Baird, p. 490.—Eleven specimens from Fort Bridger, while generally 
resembling those from Fort Tejon, differ in a much smaller bill, as in the type from the head 
waters of Platte. Should this character be considered as specific, the bird of Fort Tejon may 
be called P. megarhynchus. 
QurscaLus BaRITUS, Vieill., p. 556.—This species was found to be very abundant on Indian 
Key, Florida, by Mr. Wurdemann, in the spring of 1858. 
Pictcorvus coLumpraNnus, Bon., p. 573.--Cantonment Burgwyn, New Mexico, Dr. Anderson. 
Fort Tejon, J. Xantus de Vesey. 
CYANURA MACROLOPHUS, Baird, p. 582.—Cantonment Burgwyn, New Mexico, Dr. Anderson. 
Cyanocirra WoopuHousit, Baird, p. 585.—Cantonment Burgwyn, New Mexico, Dr. Anderson. 
BoNASA UMBELLUS, var. UMBELLOIDES, p. 630.—Mr. Drexler collected a variety of the ruffed ° 
grouse in the winter camp, in November, corresponding with what Douglas calls 7. wmbelloides. 
Its chief peculiarity lies in the bluish grey, which replaces the reddish yellow which prevails in 
the common species. I am unable to distinguish any other features of importance indicative 
of specific differences, although it may be that such exist. Douglas’s specimens were obtained 
in the valleys of the Rocky mountains, on the sources of the Pearl river, Linn. (Trans. XVI, 
1833, 148.) : 
GAMBETTA MELANOLEUCA, Bon., p. 731.—Among Mr. Drexler’s specimens from Fort Bridger is 
a skin which differs in having the legs of a more greenish tint than in eastern ones. The basal 
web of the toes is greater. The entire rump is banded two, three, or four times on each feather. 
The under part and sides are more conspicuously banded than in eastern birds. 
TRYNGITES RUFESCENS, Cab., p. 739.—This species is not omitted by Bonaparte in his list pub- 
lished in Comptes Rendus, as stated in page 739, but is given by him under Actiturus. 
ANSER HYPERBORLUS, p. 760.—From a recent examination of geese in the collection of the 
Philadelphia Academy, in company with Mr. Cassin, I am now satisfied as to the correctness of 
his separation of caerulescens as a distinct species, the young hyperboreus being quite different. 
It is also very probable that 4. albatus, his smaller snow goose, is distinct from hyperboreus, 
BERNICLA LEUCOPAREIA, Cassin, p. 765.—The specimen in the Philade’phia Academy figured 
by Mr. Cassin agrees very closely with Brandt’s type in small size, pale breast, and black chin, 
separating the white cheek patches into two. In some respects the specimen I describe resembles 
A, parvipes, Cassin, as to feet and size, but differs in dark abdomen and white collar below the 
black neck, . 
ERisMaTuRA Dominica, p. 811.—According to Dr. Cabot, Proceedings Boston Soc. Nat. History, 
VI, August, 1858, 375, a full plumaged male was shot at Alberg Springs, Missisquoi bay, Lake 
Champlain, on the 26th of September, 1857, and is now in the cabinet of the Boston Society of 
Natural History. The /. dominica is ferruginous above, the head black anteriorly, the specu- 
lum white. Length 133 inches. 
