no 
U. S. P. R. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
List of specimens. 
Catal. 
No. 
Sex and 
age. 
Locality. 
When collect¬ 
ed. 
Whence obtained. 
Orig’l 
No. 
Collected by— 
Length. 
Extent. 
Wing. 
Remarks. 
865 
3 
Carlisle, Pennsylvania.. 
Nov. 22,1842 
S. F. Baird. 
9.75 
17. 
5.17 
813 
Q 
Oct. 19,1842 
9.67 
17. 
5.33 
2362 
o 3 
July 4,1845 
10.25 
17. 
5.33 
2802 
2801 
3 
6528 
3 
-,1857 
4924 
9. 
16. 
7050 
May 13,1857 
71 
W. S. Wood. 
6118 
Q 
Oct. 21,1854 
1 
4623 
3 
April 22,1856 
7 
16.50 
5.62 
8290 
May 26,1856 
3 
10.75 
17.25 
5.50 
8289 
3 
o 
10. 
15.50 
5.25 
4621 
3 
April 23,1856 
23 
5884 
-,1856 
5885 
5620 
9 
W. S. Wood. 
4621 
3 
Platte river, N. T. 
April 26.1856 
43 
10.12 
15.75 
5.25 
4622 
9 
50 
8.87 
16. 
5.12 
6119 
Dr. Henry, U. S. A. 
6120 
CENTURUS FLAVIYENTRIS, Swain son. 
Yellow-bellied Woodpecker. 
Centurus Jlaviventris, Swainson, Anim. in Menag., 1838, (2| centenaries) 354. 
Centurus elegans, Lawrence, Ann. N. Y. Lyc. V, May, 1851, 116. 
Centurus santacruzii, Lawrence, Ann. N. Y. Lyc. V, 1851, 123, (not of Bonap.) 
Sp. Cii. —Fourth and fifth quills nearly equal ; third a little shorter ; longer than the fourth. Back banded transversely with 
black and white ; rump and upper tail coverts pure white. Crown with a sub-quadrate spot of crimson, about half an inch wido 
and long, and separated from the gamboge yellow at the base of the bill by dirty white ; from the orbit and occiput by brownish 
ash. Nape half way round the neck orange yellow. Under part generally, and sides of head dirty white. Middle of belly 
gamboge yellow. Tail feathers all entirely black, except the outer, which has some obscure bars of white. Length about 9£ 
inches ; wing 5. 
Female without the red of the crown. 
Hah .—Rio Grande region of the United States, south into Mexico. 
This species is nearly as large as the C. carolinus, although differing appreciably in the color 
of the crown and nape, the yellow nape, yellow belly, immaculate inner tail feathers, &c. The 
hands on the hack are of the same size and general character as in C. carolinus ; the back has, 
however, a brownish yellow wash. The orange yellow of the nape is about half an inch long. 
Along the base of the upper mandible the color is gamboge yellow. The under tail coverts are 
white with Y shaped marks of black. 
In the young male the occiput as well as nape are gamboge yellow ; the feathers of the 
under parts faintly streaked with black. The iris is red. 
Specimens of a Lower California or Mexican Centurus , in the Smithsonian collection, at one 
time supposed to he C. Jlaviventris , have the wing considerably longer, (5£ inches) ; the fourth 
and fifth quills longest; the third hut little less. The white transverse marks on the back are 
much narrower. The entire crown is crimson red, bordered laterally and behind with orange 
yellow ; the white hand separating the red of the crown from the yellow of the hill is purer 
