290 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



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

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

 part. — Salvin andGoDMAN, 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). — Bendire, Life Hist. N. Am. Birds, ii, 



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



1896, 274. 



[Icteims] cucullatus Sclater and Salvin, Nom. Av. Neotr., 1873, 36, part. 

 [Icterus cucidlatus] var. aicullatus Baird, Brewer, and Ridgway, Hist. N. Am. 



Birds, ii, 1874, 183, part. 

 Ilcterus] aicullatus Ridgway, Man. N. Am. Birds, 1887, 375, part. 

 Pendulinus cucullatus Cassin, Proc. Ac. Nat. Sci. Pliila., 1867, 60, part (monogr. ). 

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



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



ICTERUS CUCULLATUS NELSON! Ridgway. 

 NELSON'S ORIOLE. 



Similar to /, c. sennetti, but still paler and with forehead wholly 

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

 3^ellow, without any orange tinge; adult female ver^^ 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 male.— Length (skins), 175.3-198.1 (188.6); wing, 86.1-90.4 

 (88.4); tail, 81.8-96 (S9.9); 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 female.— Length (skins), 175.3-185.4(178.3); wing, 80.8-82.8 

 (81.8); tail, 80.5-83.3 (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)^ 



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 Territor}^ of Tepic (Santiago). 



Icterus rucuUalus (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 Diego, 

 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. Bost. Soc. N. H., ii, 1874, 279, part (Mazatlan).—HENSHAw, Rep. Orn. 

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

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



^ Ten specimens. " Four specimens. 



