600 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



t(>pcc City). — RiDGWAY, Orii. 40tli Parallel, 1877, 534 (Sacramento, Califor- 

 niaV, Norn. N. Am. Birds, 1881, no. 317.— Brewster, Bull. Nutt. Orn. Club, 

 iv, 1879, 42 (descr. young); vii, 1882, 205 (Arizona; breeding habits); Bull. 

 Mus. Comp. Zool., xli, 1902, 119 (Cape St. Lucas district, resident; crit.). — 

 Ferrari-Perez, Proc. U. S. Nat. Mus., ix, 1886, 154 (Rio de Huexotitla, 

 Puebla). — American Ornithologists' Union, Check List, 1886, no. 458. — 

 Scott, Auk, iv, 1887, 18 (Santa CatalinaMts., 4,000 ft., s. Arizona, breeding). — 

 Lloyd, Auk, iv, 1887, 192 (Tom Green Co., w. Texas, breeding). — Belding, 

 Proc. IT. S. Nat. Mus., v, 1883, 542 (Cape San Lucas).— Cooke, BirdMigr. Miss. 

 Val., 1888, 152 (Spring Creek, Tom Green Co. and San Angelo, Texas, breed- 

 ing). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1889, G4. — Jouy, Proc. 

 UrS. Nat. Mus., xvi, 1893, 782 (Jalisco).— Nelson, Auk, xvii, 1900, 124 

 (Mexico, except Yucatan and Pacific coast north of Colima; Texas; New 

 Mexico; s. e. Arizona; crit.). — Bailey, (Florence M.), Ilandb. Birds W.LT. S., 

 1902, 255. — SwARTH, Pacific coast Avifauna, no. 4, 1904, 23 (Huachuca Mts., 

 Arizona, breeding up to 6,000 ft.). 



[Sayornis] nigricans Sclater and Salvin, Nom. Av. Neotr:, 1873, 43. — Sharpe, 

 Hand -list, iii, 1901, 136. 



S[ayornis] nigricans Ridgway, Man. N. Am. Birds, 1887, 336.r— Coues, Key N. 

 Am. Birds, 5th ed., i, 1903, 522. 



Sayiornis nigricans Coues, Check List, 2d ed., 1881, no. 378. 



S[ayiornis] nigricans Coues, Key N. Am. Birds, 2d ed., 1884, 437. 



[Saijornis nigricans] var. nigricans Baird, Brewer, and Ridgway, Hist. N. Am. 

 Birds, ii, 1874, 340. 



Sayornis nigricans nigricans Miller (W. D.), Bull. Am. Mus. N. H., xxi, 1905, 357 

 (Escuinapa, Sinaloa, Oct.; crit.). 



Sayornis nigrescens (error) Anthony, Zoe, iv, 1893, 238 (San Pedro Martir Mts., 

 Lower California; resident up to 3,000 ft.). 



A[ulana.r] nigricans Cabanis, Journ. fiir Orn., iv, Jan., 1856, 2. — Cabanis and 

 Heine, Mub. Hein., ii, Sept., 1859, 68 (Mexico). 



[Aulanax] nigricans Heine and Reichenow, Nom. Mus. Hein. Orn., 1890, 145 

 (Mexico). 



[Taenioptera] nigricans Gray, Hand-list, i, 1869, 343, no. 5191. 



Musdcapa atrata Lichtenstein, Preis-Verz. Mex. Vog., 1830, 2; Journ. fiir Orn., 



1863, 58 (reprint). 

 Musdcapa semiatra Vigors, Zool. Voy. "Blossom," 1839, 17 (no locality men- 

 "tioned). 



Sayornis nigricans semiatra Nelson, Auk, xvii, Apr., 1900, 125 (Pacific coast 

 of Mexico north of Colima, and north to Oregon; most of Arizona; crit.). — 

 American Ornithologists' Union Committee, Auk, xviii, 1901, 301. — 

 Mailliard, Condor, iii, 1901, 123 (San Benito Co., California, resident). — 

 Grinnell, Check List Birds Calif., 1902, 42. 



S[ayornis\ 7i[igricans] semiatra Bailey (Florence M.), Handb. Birds W. U. S., 



1902, 256. 

 [Sayornis] semiatra Sharpe, Hand-list, iii, 1901, 137. 



SAYORNIS NIGRICANS AQUATICA (Sclater and Salvin). 

 GU AT AM ALAN PHCEBE. 



Similar to S. n. nigricans, but white abdominal area more restricted 

 and under tail-coverts mostly sooty gray or dusky. 



[Owing to the circumstance that I have been able to examine a 

 single specimen only of this form, and that with sex undetermined, 

 I am not able to give measurements.] 



