ADDITIONAL REMARKS ON NORTH AMERICAN BIRDS 
Additional materials having been received while the preceding report was passing through 
the press, I am enabled to make some important corrections and additions in reference to the 
number of species, as well as to their synonymy and localities. These are based chiefly on col¬ 
lections received at quite a late period, made by Mr. J. Xantus de Yesey, at Fort Tejon, Califor¬ 
nia, Dr. W. W. Anderson, U. S. A., at Cantonment Burgwyn, N. M., and Mr. C. Drexler, at 
Fort Bridger, Utah. A special list of Mr. Drexler’s whole collection is added. Sheets of 
the report, as printed, were sent to Mr. P. L. Sclater, of London ; and some valuable criticisms 
received from him have also been embodied herein. 
Falco nigriceps, Cassin, p. 8. —An erroneous measurement of Dr. Cooper’s specimen, 8501, 
should read,—length, 17.25; extent, 39.50. 
Syrnium nebulosum, Gray, p. 56.—Fort Tejon, J. Xantus de Yesey. 
Nyctale acadica, Bon., p. 58.—Fort Tejon, J. Xantus de Yesey. 
Pious HARRisn, Aud., p. 87.—A specimen from Fort Bridger has the middle wing coverts 
unusually spotted with white. It belongs to the variety with pure white belly. The same 
may also he said of a specimen of P. gairdneri. A skin of P. Iiarrisii, from Cantonment 
Burgwyn, has a reddish yellow patch in the crown. 
Sphyrapicus nuchalis, Baird, p. 103.—In the article on S. varius, p. 103, reference is made 
to a supposed curious variety of the latter species with black curved band bordering the red of 
crown posteriorly, and succeeded by a nuchal crescent of red instead of soiled brownish white. A 
large number of specimens brought in by Mr. Drexler (about twenty) show further differences, 
in the fact that the female has a red throat like the male, instead of white, the extreme angle 
of the chin only being more or less white, which, with other peculiarities, entitle it to the rank 
of a distinct species. The characters are as follows : 
Similar to S. varius. Under parts whitish, only faintly tinged with yellow. Black stripe from 
side of lower jaw not extending hack to that of breast, hut cut off by the extension of the red 
of throat to the lateral white stripe ; outer webs of secondaries almost entirely black. Tail 
feathers almost entirely black except the inner webs of the innermost, which are white handed 
with black, the others occasionally edged slightly with yellowish ; red of crown margined 
behind by black, this succeeded by a half collar or crescent of red curving forwards to the eye 
and becoming white on the sides of head. Female with the throat red, the chin more or less 
white. 
Other differences might he indicated, hut what I have mentioned is quite sufficient to establish 
a distinction of species. The specimens from Laramie Peak, collected by Lieutenant Warren, 
those of Dr. Henry, from Fort Thorn, and probably all from the Rocky mountains, belong to 
Oct. 18, 1858. 
116 b 
