526 



U. S. p. E. R. EXP. AND SURATEYS — ZOOLOGY GENERAL REPORT. 



Comparative measurements of the species. 



Synopsis of species. 



Tail rounded, or graduated; height of bill half or more than its length. Hhoulders and lesser 

 coverts bright crimson. 



Median wing coverts brownish yellow to the end. Bill with longitudinal wrinkles on 



both mandibles /. phoeniceus. 



Median wing coverts black for the exposed portion, brownish yellow at the base. Lower 



jaw with transverse wrinkles A. gubernator. 



Tail nearly even ; height of bill at base less than half its lengtli. Shoulders and lesser 

 coverts dark brownish orange ; median coverts white A. tricolor. 



AGELAIUS PHOENICEUS, Vieillot. 



Swamp Blackbird; Red-wing Blackbird. 



Oriolus phoeniceus, Linn. Syst. Nat. I, 1766, 161.— Gmelin, I, 1788, 386.— Lath. Ind. Cm. I, 1790, 428. 



JIgdttixxs jihoenictus, "Vieillot, Anal. 1816." — Swainson, F. Bor. Am. II, 1831, 280. — Bonai'. List, 1838.— Ib. 



Consp. 1850, 430.— AuD. Syn. 1839, 141.— In. Birds Ainer. IV, 1842, 31 ; pi. 216. 

 Iderm phoeniceus, l.icirr. Verz. 1823, No. 188.— Bon. Obs. Wils. 1824, No. 68.- Add. Cm. Biog. I, 1831, 348: V, 



1839, 487 ; pi. 67. 

 Psarocoliiis phoeniceus, Wacler, Syst. Nat. 1827, No. 10. 



Icterus {Xnnlhormis) phoeniceus, Bonap. Syn. 1«38, 52.— Nbttall, Man. I, 1832, 167 ; 2d ed. 179. 

 Sturnus praedatorius, Wilson, Am. Orn. IV, 1811, 30 ; pi. xx.x. 

 Red-ioinged oriole, Pennant, Arctic Zool. II, 255. 



Sp Cii. — Tail much rounded ; tlio lateral feathers about half an inch shorter. Fourth quill longest ; first about as long as the 

 fifth. Bill large, stout ; half as high, or more than half as high as long. 



J)Iale. — General color uniform lustrous velvet black, with a greenish reflection. Shoulders and lessor wing coverts of a bright 

 crimson or vermilion red. Middle coverts brownish yellow, and usually paler towards the tips. 



Female. Brown above, the feathers edged or streaked with rufous brown and yellowish ; beneath white, streaked with brown. 



Fore part ofthroat, superciliary, and median stripe strongly tinged with brownish yellow. Longthof male, 9.50; wing, 5 ; tail, 4.15. 



IJab. — United States from Atlantic to Pacific. 



The bill is nearly straight in its outlines ; the commissure, except at base, perfectly so ; the 

 thickness of both mandibles the same, measured at the bend of the commissure, and perpendicular 

 to the upper and lower outlines. There are faint indications of striae on tlie liill proceeding 



