BIRDS —CORVIDAE—CYANURUS, 
579 
List of specimens. 
Catal. No. 
Locality. 
When collected. 
Whence obtained. 
Collected by— 
8476 
San Francisco, Cal....... 
R. D. Cutts_ 
5899 
Santa Clara, Cal_. -_ 
1855. 
Dr. Cooper_ 
2845 
Santa Barbara, Cal. ------ 
S. F. Baird. 
J. J. Audubon_ T 
4937 
San Josd, Cal._ 
A. J. Gravson_ 
4567 
San Diego, Cal_ 
Dr. Hammond_ 
CYANUBA, Swain son. 
Cyanurus , Swainson, P. Bor. Am. II, 1831, 495, Appendix. Type Corvus cristatus, Linn. 
Cyanocitta, Cabanis, Mus. Hein. 1851. Not of Strickland, 1845. 
Ch.—H ead crested. Wings and tail blue, with transverse black bars ; head and back of the same color. Bill rather slender, 
somewhat broader than high at the base ; culmen about equal to the head. Nostrils large, nearly circular, concealed by bristles. 
Tail about as long as the wings, lengthened, graduated. Hind claw large, longer than its digit. 
The culmen is straight to near the tip, where it is gently decurved ; the gonys is convex at 
the base, then straight and ascending. The hill has a very slight notch at the tip. The 
nostrils are large, nearly circular, or slightly elliptical. The commissure is straight at the 
base, then bending down slightly near the tip. The legs present no special peculiarities. The 
crest on the head consists of a number of elongated, narrow, lanceolate occipital feathers. 
The C. cristata differs from C. stelleri, and still more from C. macrolophus, in having a shorter, 
stouter, and more convex and curved hill; the nasal bristly feathers with black shafts, and the 
lateral branches ash color, instead of the whole being black. The tarsi are shorter, the colors 
quite different. 
Synopsis of species. 
Common characters. —Wings and tail blue, conspicuously banded with black. Head with a 
prominent crest. 
Bill short. Lateral tail feathers tipped with white. Under parts whitish ; breast with 
a crescent of black connected with a half collar on the neck above... C. cristata. 
Bill longer. Body blue. Head, neck, and upper part of back dull sooty black. 
Occipital crest rather short. Frontal feathers slightly glossed with dull blue. 
No white about the eyes... C. stelleri. 
Occipital crest very long. Frontal feathers conspicuously streaked with bluish 
white. A white streak above the eye... C. macrolophus. 
