106 
U. S. P. R. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
Mr. Thomas Bridges more recently collected a male specimen in northern California, and 
sent it to London, where it was described by Mr. Sclater, in February, 1858, as quoted above. 
As Dr. Newberry’s report and plate were published in 1857, and the species there named P. 
ivilliamsonii by him, he has, of course, the priority. 
This one species is so entirely different from any other American bird as to require no special 
comparison. It has as yet only been found in the Kocky mountains, about latitude 40°, and 
westward. 
List of specimens. 
Catal. 
No. 
Sex. 
Locality. 
When col¬ 
lected. 
Whence obtained. 
Collected by— 
Length. 
Stretch 
of wings. 
Wing. 
Remarks. 
9344 
8804 
9 
Shores of Klamath lake,O.T. 
Laramie peak . 
Aug. 23,1855 
Aug. 24,1851 
Lieut. Williamson.. 
Lieut. AVarren. 
Dr. J. S. Newberry. 
Dr. Hayden. 
9.00 
15.25 
5.00 
Dried entire from 
alcohol. 
SPHYRAPICUS THYROIDEUS, Baird. 
Broivn-headed Woodpecker. 
Picns Ihyroideus, Cassin, Pr. A. N. Sc. V, Dec. 1851, 349, (California.)— Heermann, J. A. N. Sc. Ph. 2d ser. IT, 
1853, 270. 
JUelanerpes thyroideus, Cassin, Ill. I, 1854, 201 ; pi. xxxii. 
Pilumnus thyroideus, I3on. Consp. Zygod. Aten. Ital. 1854, 8. 
r? Picus nataliae, Malherbe, Cab. Journ. f. Ornith. 1854, 171. 
Sp. Ch. —About the size of P. varius. Head dark ashy brown ; rest of body apparently encircled by narrow transverse and 
continuous bands crossing the wings, of black and brownish white, except a large, round, black patch on the breast; and the 
central line of the body from the crest to the vent, which is the color of roll sulphur. No red on the head. Female with 
rather duller color. Length about 9 inches ; wing, 5 inches ; tail, 4.10 inches. 
Hah .—Cascade and Coast ranges of California and Oregon. 
This species, but recently added to our Fauna , is quite different in its colors from the other 
North American species. In addition to the characters already assigned, the crown of the head 
is obscurely streaked or spotted w’ith black. The transverse and well defined narrow bands on 
the back, breast, and sides of the body are very peculiar. The rump and upper tail coverts are 
white, with a few spots of black ; the under coverts are barred with black. The tail feathers 
are black, the inner and outer barred transversely with white on both webs, the shafts, however, 
entirely black. The quills are all spotted with white on both webs. 
The sexes of the specimens collected have not been indicated sufficiently to show whether the 
absence of red about the head in all of them applies to the male as well as the female. 
List of specimens. 
Catal. 
No. 
Sex. 
Locality. 
When col¬ 
lected. 
Whence obtained. 
Collected by— 
Length. 
Stretch 
of wings. 
Wing. 
Remarks. 
3903 
O 
6047 
Dr. Henry, U. S. A. 
8803 
9 
Laramie peak. 
Aug. 24,1857 
Lieut. Warren. 
Dr. Hayden. 
9.00 
19.00 
5.25 
Iris dark brown.. 
