580 
U. S. P. E. K. EXP. AND SURVEYS — ZOOLOGY — GENERAL REPORT. 
Comparative measurements of species. 
Species. 
Locality. 
1° 
■= 
Cat 
& 
S 
1107 
Cyanura cristata 
Carlisle, Pa 
Q 
n'oo 
1423 
do 
3 
11.02 
do 
8376 
Cyanura stelleri 
California 
10.90 
Fort Steilacoom 
12.80 
8486 
Cyanura macrolophus. . 
Fort Mass, N. M 
Q 
Camp 105, N. M.. 
11.70 
do 
4419 
do 
City of Mexico 
11.20 
1919 
10.30 
11.26 
5903 
Cyanocitta californica . . 
8455 
3 
10.44 
9345 
9 
10.70 
8-165 
do 
Mexico 
11.10 
8481 
Cyanocitta woodhousii . 
Fort Thorn, N. M .. 
11.70 
9095 
Cyanocitta sordida 
Mexico 
3 
12.80 
8409 
Copper Mines, N. M 
or] 
12.10 
do 
13.00 
4112 
Cyanocitta ultramarina? 
3 
10.70 
do 
11.50 
9090 
Cyanocitta unicolor 
3 
13.10 
8452 
Pcrisoreus canadensis.. 
Sangre Cristo Pass. 
10.90 
4052 
Xar.thoura luxuosa 
New Leon, Mcx.. .. 
"s 
10.50 
do 
do 
11.00 
9091 
do 
Mexico 
10.90 
16.00 
17.75 
1.13 
1.18 
CYANUKUS CRISTATUS, Swainson. 
Blue Jay. 
Corvus a-istatus, Linn. Syst. Nat. I, 10th ed. 1758, IOC; 12th ed. 1766, 157.— Gmelin, Syst. Nat. I, 1788,369.— 
Wilson, Am. Orn. I, 1808, 2 ; pi. i. f. 1.— Bon. Obs. Wilson, 1824, No. 41.— Doughty, Cab. 
N. H. II, 1832, G2 ; pi. vi.— Aud. Orn. Biog. II, 1834, 11 : V, 1839, 475 ; pi. 102. 
Garrulus cristutus, " Vieillot, En?yclop. 890. "— In. Diet. XI, 477.— Bon. Syn. 1828, 58.— Sw. F. Bor. Am. II, 
1831, 293.— Vieillot, Galerie, I, 1824, 160 ; pi. cii.— Aud. Birds Am. IV, 110 ; pi. 231. 
Pica cristata, Wagler, Syst. Av. 1827. Pica, No. 8. 
Cyanurus cristatus, Swainson, F. Bor. Am. II, 1831, App. 495. 
Cyanccorax cristatus, Bon. List, 1838. 
Cyanocitta cristata, Strickland, Ann. Mag. N. H. 1845, 261. — Cabanis, Mus. Hein. 1851,221. 
Cyanagarrulus cristatus, Bon. Consp. 1850, 376. 
Sp. Ch. — Crest about one-third longer than the bill. Tail much graduated. General color above light purplish blue ; wings 
and tail feathers ultramarine blue ; the secondaries and tertials, the greater wing coverts, and the exposed surface of the tail, 
sharply banded with black, and broadly tipped with white, except on the central tail feathers. Beneath white ; tinged with 
purplish blue on the throat, and with bluish brown on the sides. A black crescent on the fore part of the breast, the horns passing 
forward and connecting with a half collar on the back of the neck. A narrow frontal line and loral region black ; feathers on 
the base of the bill, blue like the crown. Female rather duller in color and a little smaller. Length, 12.25 ; wing, 5.65 ; tail, 
5.75. 
Hub. — Eastern North America, west to the Missouri. 
Iii addition to what has been already stated, there is a narrow black line behind the eye 
running into the cervical collar, which is overhung by the feathers of the crest ; the posterior 
concealed ones of these also black. The amount of white on the tail decreases from the exterior. 
