BIRDS — ICTEEIDAE — ICTERUS BULLOCKII. 



549 



List of specimens. 



ICTEEUS BULLOCKII, Bon. 



Bollock's Oriole. 



Xanlhornus hullotkii, Sw. Syn. Mex. Birds, Taylor's Phil. Mag. I, 1827, 436. 



^igelaius bullockii, Rich. Rep. Brit. Assoc. 1837. 



Icterus bxMockii, Bon. List, 1838.— Add. Orn. Biog. V, 1839, 9 ; pi. 338 and 433.— Ib. Birds Amer. IV, 1842, 43 ; 



pi. 218.— Newberry, Rep. P. R. R. VI, iv, 1857, 87. 

 Psarocotius auricolUs, Ma.xim. Reise Nordam. I, 1839, 367. (Fort Pierre, Neb.) 



Sp. Ch. — Tail very slightly graduated. Upper part of the head and neck, back, wings, two central tail feathers, line from 

 base of bill through the eye to the black of the nape, and a line from the base of the bill running to a point on the throat, 

 black. Under parls generally, sides of head and ne^ik, forehead and line over the eye, rest of tail feathers, rump, and upper 

 tail coverts, yellow orange. A broad band on the wings, involving the greater and middle coverts, and the outer edges of tha 

 quills, white. Young male with the black replaced by greenish yellow, that on the throat persistent; female without this. 



Length, about 7.50 inches ; wing, 3.80. 



Hub. — High Central Plains to the Pacific ; rare on upper Missouri ; south into Me.tico. 



The subterminal portion of all the feathers in the black of the head above and back, (except 

 on the posterior portion of the latter) is yellow. Tlie black on the throat is as wide as the base 

 of the bill, and extends along the sides of the bill to the black in the loral region. The rump 

 is olivaceous yellow, the tail feathers brighter yellow. All the tail feathers are yellow at the 

 base ; the exposed portions of the two inner are black ; the rest with a blackish tip, diminishing 

 from the fourth to first. The shafts of all are black above towards the base. The under surface 

 of the wings is orange yellow. 



In the female and young male the upper surface is olivaceous yellow, browner on the middle 

 of the back. The black band through the eye is faintly indicated. Nearly mature males have 

 a much broader orange frontal band ; the top of head is much spotted with the same. 



The bill and tail are shaped very much as in /. haltimore. It is a larger species, and is 

 readily distinguished by the yellow of the front and sides of the head and neck, with a black 

 line through the eye, instead of having the whole head and neck black ; lesser wing coverts 

 black, not yellow ; a much broader white band on the wing, &c. 



