122 
U. S. P. E. E. EXP. AND SUEVEYS—/OOLOGY—GENEEAL EEPOET. 
List of specimens. 
Catal. 
No. 
Sex. 
Locality. 
When collected. 
Whence obtained. 
Orig’l 
No. 
Collected by— 
Length. 
Extent. 
Wing. 
Remarks. 
5948 
s 
13.00 
21.00 
5949 
8 
12.75 
19.00 
5950 
9 
13.00 
20.75 
5951 
9 
6167 
Feb. 15,1854 
37 
13.00 
17.75 
7. 
6168 
8 
15 
6169 
9 
March —,1856 
242 
6170 
s 
May 10,1856 
386 
12.50 
19.75 
6171 
8 
May 13,1866 
388 
13.25 
21. 
6165 
8 
13.25 
21. 
6166 
9 
13.25 
23.25 
1887 
9 
Oct. 18,1834 
. 
1886 
8 
4454 
8 
. 
6164 
8 
4209 
8 
4210 
9 
4453 
8 
3902 
o 
6162 
8 
6163 
O 
6160 
9 
180 
11. 
18.50 
7. 
6172 
Fort Thorn, N. M. 
5072 
8 
Fort Fillmore, N. M.... 
Oct. 17,1855 
146 
14. 
18. 
6. 
8 
Nov. 27,1855 
168 
12.50 
22. 
7. 
5074 
o 
Oct. 17,1855 
147 
13.50 
20. 
6.50 
Eyes brown, feet gray. 
6161 
V 
Q 
28 
6159 
8 
Dec. —,1854 
16 
Dr. Kennerly. ... 
11 
18. 
6. 
4041 
9 
May —, 1853 
11. 
18. 
6. 
dark slate, feet lead. 
5601 
8 
Lt. F. T. Bryan ... 
366 
W. S. Wood. 
river. 
5602 
8 
Sept. 24,1856 
Lt. F.T. Bryan... 
350 
W. S. Wood. 
Kansas. 
8226 
9 
Sept. 11,1857 
12.25 
20.50 
6.75 
8217 
8 
13.00 
21.00 
7.00 
8218 
9 
13.00 
21.00 
6.50 
COLAPTES HYBRIDUS, Baird. 
Colaptes ayresii, Aud. Birds Am. VII, 1843, 348 ; pi. 494. 
? Geopicus chrysoides, Malherbe, Rev. et. Mag. Zool. IV, 1852, 553. (Differs from C. auratus in wanting red nape ) 
Sp. Ch. —Yellow shafts or feathers on wing and tail combined with red or red spotted cheek patches. Orange shafts combined 
with a well defined nuchal red crescent. Ash colored throat combined with black cheek patch, or yellow shafts. Shafts and 
feathers intermediate between gamboge yellow and dark orange red. 
By the above name I intend to cover a remarkable series of woodpeckers from the upper 
Missouri and Yellowstone, combining the characteristics of the Colaptes auratus and mexicanus 
in proportions varying with almost each individual, and leading irresistibly to the conclusion 
that they are descendants of originals of the species mentioned above, mixed up by inter¬ 
breeding of successive generations, to a degree unparalleled in the annals of ornithology. I 
have, in the two preceeding articles, gone into much detail in respect to the characters of 
Colaptes auratus and mexicanus , and under the first named head have shown the particular 
point of difference. 
