58 8 U. S. P. R. R EXP AND SURVEYS ZOOLOGY — GENERAL REPORT. 
List of specimens. 
Catal. Sex. 
No. 
Locality. 
When collected. Whence obtained. 
Orig. 
No. 
Collected by — 
Length. 
Stretch 
of wings. 
Wing. 
8469 | S 
9095 S 
Copper Mines, N. M._ 
Mexico - 
1851 Col. Graham 
M. Verreaux 
8 
17237 
J. H. Clark 
13. 00 
19.00 
6. 50 
CYANOCITTA ULTEAMARINA, S t r i c k 1 . 
Ultramarine Jay. 
Garrulus ultramarinus, Bonap. J. A. N. Sc. IV, 1825, 386. Not of Audubon. 
Cyanocitta ultramarina, Strickland, Ann. & Mag. XV, 1845, 260.— Gambel, J. A. N. Sc. 2d Ser. I, 1847, 45. 
Cyanngarrulus ultramarinus, Bon. Consp. 1850, 378 ; quotes PL Col. 439. 
Sp. Ch. — Tail rounded, but little graduated ; lateral feather about a quarter of an inch shortest. Wings longer than the tail, 
when closed reiching nearly to its middle. Above and on sides of head and neck bright blue ; the lores blackish ; the middle of 
the back slightly duller, the tips of some of the feathers dark brown. Beneath brownish ash, paler on the chin and 
towards the anal region, which, with the crissum, is white. No trace of white or black on the sides of the head, nor of any 
streaks or collar on the breast. Length, (fresh,) 11.50 ; wing, 6 ; tail, (dried,) 5.40 ; tarsus, 1.50. 
Hab. — South side of valley of Rio Grande, near the coast, and southward. 
This well marked species is quite different in form from the G. calif ornica, having a shorter, 
more even tail, much longer wings, and stouter feet. The ahsence of any collar or streaks on 
the hreast and throat, of hlack or white on the side of the head, and of decided ash on the back, 
are very well marked features. There is also much more green in the blue of the head. 
I am in considerable doubt whether this is the original Garrulus ultramarinus of 
Bonaparte, as the latter appears to be much larger than Lieut. Couch's bird ; the length 
amounting to 13 inches; the tail, 7 inches; the bill, 1.50 inches. The closed wings reach 
almost to the middle of the tail, which is perfectly even at the tip. Gambel says the wing is 
7 inches long ; the tail, 6.75 ; tarsus, 1.75. The measurements given in Conspectus Avium, of 
length 11 inches, wing 5f , answer much better to the species here described. Should there be 
two species, therefore, and the smaller be not named, I shall propose to call it G. couchii, in 
honor of its indefatigable discoverer, Lieut. D. N. Couch, of the United States army, who, at 
his own risk and cost, undertook a journey into northern Mexico when the country was 
swarming with bands of marauders, and made large collections in all branches of zoology, 
which have furnished a great amount of information respecting the natural history of our 
borders and the geographical distribution of the vertebrata generally. 
List of sjiecimens. 
Catal. 
No. 
Sex. 
Locality. 
When collected. 
Whence obtained. 
Orig. 
No. 
Length. 
Stretch 
of wings. 
Wing. 
Remarks. 
4112 
4113 
s 
f 
Monterey, Mex 
do 
April — , 1853 
Lt. Couch ... 
156 
157 
11. 50 
11. 50 
18. 00 
18.00 
0. 00 
6. 60 
Eyes dark brown; 
bill and feetbl'k. 
