110 U. S. P. R. E. EXP. AND SURVEYS — ZOOLOGY — GENERAL REPORT. 
List of specimens. 
Catal . 
No. 
Sex and 
Locality. 
When collect- 
ed. 
Whence obtained. 
Orig'l 
No. 
Collected by— 
Length . 
Extent. 
Wing. 
Remarks. 
865 
R13 
2362 
2802 
2801 
6528 
4924 
7050 
6118 
4623 
8290 
8289 
4621 
5620 
4621 
4622 
6119 
6120 
3 - 
9 
° 3 
Carlisle, Pennsylvania.. 
do 
Nov. 22,1842 
Oct. 19,1842 
July 4,1845 
S. F. Baird 
9.75 
9.67 
10.25 
17. 
17. 
17. 
5.17 
5.33 
5.33 
3 
3 
, 1857 
9. 
16. 

St. Louis, Mo 
May 13,1857 
Oct. 21,1854 
April 22, 1S56 
May 26,1856 
71 
1 
7 
3 
2 
23 
9 
3 
Ft. Leavenwor'th.K. T.. 
St. Josephs, Mo 
16.50 
17.25 
15.50 
5.50 
5.25 
Eyes, brownish red. 
Iris, red 
W. M. Magraw .... 
Dr. J. G. Cooper. . 
.do 
10.75 
10. 
3 
3 
Nemaha Reserve, N. T. 
April 23,1856 
, 1856 
d ° 
June 13, 1856 
April 26. 1856 
43 
50 
3 
9 
do 
Dr. Hayden 
10.12 
16. 
5.25 
5.12 
Dr. Henry, U. S. A. 
1 
CENTUBUS FLAVIVENTRIS, Swains on. 
Yellow-bellied Woodpecker. 
Centurus flavivenlris, Swainson, Anim. in Menag., 1838, (2j 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. Ch. — 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 wide 
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. 
Hab. — 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 
bands on the back 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 V 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 be G. flaviventris, have the wing considerably longer, (5^ inches) ; the fourth 
and fifth quills longest ; the third but -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 band separating the red of the crown from the yellow of the bill is purer 
