290 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Brown, Texas; descr. nest and eggs).— Ridgway, Nom. N. Am. Birds, 1881, 

 no. 269, part. — American Ornithologists' Union, Check List, 1886, no. 505, 

 part. — Salvin and Godman, Biol. Centr.-Am., Aves, i, 1887, 471, part (Charco 

 Escondido, Tamaulipas).— Singley, Rep. Geol. Surv. Texas, 1894, 372 (Santa 

 Maria to Rio Grande City, Texas).— Bendihe, Life Hist. N. Am. Birds, ii, 



1895, 475, pi. 6, figs. 30-32 (eggs).— Nbhrling, Our Native Birds, etc., ii, 



1896, 274. 



llcterus] cumUalus Sclater and Salvin, Nom. Av. Neotr., 1873, 36, part. 

 [Icterus cucuUaius] var. mcullatus Baird, Brewer, and Ridqway, Hist. N. Am. 



Birds, ii, 1874, 183, part. 

 llcterus] cucuUcUus Ridgway, Man. N. Am. Birds, 1887, 375, part. 

 Pendulinm cucuUaius Gassin, Proc. Ac. Nat. Sci. Phila., 1867, 60, part (monogr.). 

 Icterus mcullatus sennetti Ridgway, Proc. Wash. Acad. Sci., iii, Apr. 15, 1901, 152 



(Brownsville, Texas; coll. U. S. Nat. Mus.). 



ICTERUS CUCULLATUS NELSONI Ridgway. 

 NELSON'S ORIOLE. 



Similar to 1. c. sennetti^ but still paler and with forehead wholly 

 3'ellow; adult male with the general color clear cadmium or Indian 

 yellow, without any orange tinge; adult female very similar to that of 

 /. c. sennetti^ but averaging slightly lighter in color, the yellow of 

 under parts usually rather purer; wing averaging decidedly longer, 

 but tail shorter, and bill longer and more slender. 



Adult wifflfe.— Length (skins), 175.3-198.1 (188.6); wing, 86.4-90.4 

 (88.4); tail, 81.8-96 (89.9); culmen, from base, 20.8-22.1 (21.6); depth 

 of bill at base, 6.9-7.4 (7.1); tarsus, 21.6-23.4 (22.4); middle toe, 15.5- 



16.8(16)'. 



Adult fe}nale.—\aQVL^'ih (skins), 175.3-185.4(178.3); wing, 80.8-82.8 

 (81.8); tail, 80.6-83.3 (82); culmen, from base, 19.8-20.8(20.3); depth 

 of bill at base, 6.9-7.4 (7.1); tarsus, 21.6-22.4 (21.8); middle toe, 14.5- 

 16 (15.2)1 



Coast plain of northwestern Mexico and western portion of Mexican 

 plateau, in States of Sonora, Chihuahua, and Sinaloa and Territory of 

 Tepic; north to Arizona and southern California (San Bernardino, San 

 Diego, and Ventura counties); peninsula of Lower California; breed- 

 ing southward to Territory of Tepic (Santiago). 



Icterus cucuUaius (not of Swainson) Baird, Proc. Ac. Nat. Sci. Phila., 1859, 301, 

 304 (Cape St. Lucas, Lower California) .-Cooper, Proc. Cal. Ac. Sci., 1861, 

 122 (San Bernardino, s. California); Orn. Cal., 1870, 275, part (San Di^o, 

 s. California; Cape St. Lucas).— Coues, Proc. Ac. Nat. Sci. Phila., 1868,84 

 (Tucson, Arizona) ; Check List, 1873, no. 218, part; 2d ed., 1882, no. 328, part.— 

 Baird, Brewer, and Ridgway, Hist. N. Am. Birds, ii, 1874, 193, part; iii, 

 1874, 517 (Lower California and Arizona; descr. nest and eggs). — Lawrence, 

 Mem. Best. Soc. N. H., ii, 1874, 279, part (Mazatlan).—HENSHAW, Rep. Orn. 

 Spec. Wheeler's Surv., 1873 (1874), 160 (Arizona s. of Gila R.); Zool. Exp. 

 W. 100th Merid., 1875, 319, excl. syn., part (Camps Grant and Bowie, 



' Ten specimens. ^ Four specimens. 



