BIRDS — PICIDAE — CENTURUS UROPYGIALIS. 
Ill 
and better defined. The white of the under parts is of a more smoky tinge, with a general 
yellowish shade. The gamboge of the abdomen is darker. The tibia is finely barred trans- 
versely with black. The rump and upper coverts are white, the inner web of the inner feather 
barred with white. The female is similar, but lacks the anterior half of the crimson of the 
crown. 
A skin (No. 9085) labelled Centurus hypopolius, (Wagl.) by Verreaux, agrees perfectly with 
the present species. It is, however, very distinct from the true hypopolius of Wagler in the 
original description in Isis. 
List of specimens. 
Caul. 
. No. 
Sex. 
Locality. 
When col- 
lected. 
Whence obtained. 
Collected by- 
Length. 
Stretch 
oi winjrs. 
Wing. 
Remarks. 
6121 
3708 
6125 
6126 
6122 
6123 
6124 
4036 
4037 
9085 
<J 
Lieut. J. G. Parke.... 
do 
10.25 
17.50 
5.50 
July 5, 1853 
July 15,1853 
Mar. 1, 1853 
3 
Q 
Matamoras, Mexico 
9.00 
9.50 
15.50 
16.50 
5.00 
5.00 
Eyes red, bill daik 
slatedegs lead color. 
CENTURUS UROPYGIALIS, Baird. 
Gila Woodpecker. 
Centurus uropygialis, Baird, Pr. A. N. Sc. Ph. VII, June, 1854, 120. (Bill Williams' river, N. M.) 
Centurus hypopolius, (Bp.) Pucheran, Rev. et Mag. J853, 163/ (Not Picas {Centurus) hypopolius, Wagler.) 
Zebrapicus kaupii, Malherbe, 1855? — (Sclater in letter.) 
Centurus sulfureivenler, Reichenbach, Handbucli, vi, Picinae, Oct. 1854, 410, figs. 4411, 4412. 
Sp. Ch. — Third, fourth, and fifth quills longest, and about equal. Back, rump, and upper tail coverts transversely barred 
with black and white, purest on the two latter. Head and neck all round pale dirty brown, or brownish ash, darkest above. A 
smallsub-quadrate patch of red on the middle of the crown, separated from the bill by dirty white. Middle of the abdomen 
gamboge yellow ; under tail coverts and anal region strongly barred with black. First and second outer tail feathers banded 
black and white, as is also the inner web of the inner tail feather ; the outer web of the latter with a white stripe. Length, 
about 9 inches ; wing, 5. 
Female with the head uniform brownish ash, without any red or yellow. 
Hab. — Lower Colorado river of the West. 
This very distinct species combines the peculiar characteristics of both O. carolinus and 
flaviventris. The tail is marked almost precisely like the former, except that the first and second 
outer feathers are banded across with black and white, instead of this being confined to the 
outer, and less distinct. It differs in the yellow belly and restricted small patch on the crown. 
It agrees with flaviventris in the color of the abdomen and in the small quadrate patcli of red 
on the crown ; it differs, however, in lacking the orange yellow patch on the nape and the 
gamboge band before the eyes. The rump and upper coverts are banded white and black, not 
pure white ; the innermost tail feather is banded and streaked with white, not uniform black. 
The region about the thighs and arms is much more strongly barred. The head and under 
parts are more smoky brown in tinge. The bill is considerably more slender. 
Specimens do not vary much. Sometimes there is a smoky brown wash on the back. In one 
female from the Gila river the head is considerably lighter, with a tinge of yellow. 
