200 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



streak of blackish; maxilla deep brown (darker on oulnien), mandible 

 paler ])ro\vn (darker terminally); iris brown; legs and feet light 

 brownish. 



Adult w«/t^— Length (skins), 129.64-1M.78 (138.94); wing, 69.09- 

 74.17 (71.88); tail, 49.53-55.12 (53.34); exposed culmen, 12.19-13.72 

 (12.95); depth of bill at base, 7.37-7.87 (7.62); tarsus, 22.35-23.37 

 (22.86); middle toe, 15.75-18.03 (17.02).' 



Adult female.— Li^wgih. (skins), 132.08-144.78 (136.65); wing, 64.01- 

 71.88 (66.80); tail, 46.48-54.36 (50.55); exposed culmen, 10.67-12.95 

 (12.19); depth of bill at base, 6.35-7.62 (7-37); tarsus, 21.59-23.62 

 (22.35); middle toe, 15.75-17.78 (16.26).- 



Salt marshes of southern California and Lower California, north to 

 Santa Barbara, south about to San Quentin Ba}" (?); in winter south 

 along l)oth coasts of Lower California to Cape St. Lucas and Todos 

 Santos Island and along coast of Sonora as far as Gua3'mas. 



Enihertza rostrata Cassitsi, Proe. Ac. Nat. Sci. Phila., 1852, 184 (San Diego, Cali- 

 fornia; coll. Acad. Nat. Sci. Phila.) . 



Ammodramus rostratus Cassin, lUustr. Birds Cal., Tex., etc., 1855, 226, pi. 38. — 

 American Ornithologists' Union, Check List, 1886, no. 544. — Grinnell, 

 Pub. ii, Pasadena Acad. Sci., 1898, 36 (Los Angeles Co., California, Aug. 

 to Apr., in'salt marshes and beaches). 



A.[miiiodramus'] rostratus JiiJiGW ay, Man. N. Am. Birds, 1887, 410. 



TassercidusrostratitsBAiRD, Rep. Pacific R. R. Surv., ix, 1858, 446; Cat. N. Am. 

 Birds, 1859, no. 336. — Heer.mann, Rep. Pacific R. R. Surv., x, pt. iv, 1859, 

 46 (San Diego, San Pedro, and Santa Barbara, CaHfornia). — Cooper, Orn. 

 Cal., 1870, 184 (San Pedro; San Diego).— Coues, Check List, 1873, no. 160; 

 2d ed., 1882, no. 230.— Baird, Brewer, and Ridgway, Hist. N. Am. Birds, 

 i, 1874, 542, pi. 24, fig. 12.— Coues and Streets, Bull. U. S. Nat. Mus., no. 7, 

 1877, 9 (Todos Santos I., Lower California). — Ridgway, Nom. N. Am. Birds, 

 1881, no. 196; Proc. U. S. Nat. Mus., v, 1883, 537-539 (La Paz, Lower California; 

 crit.).— Belding, Proc. U. S. Nat. Mus., v, 1883, 637 (La Paz, Lower Cali- 

 fornia, Dec. to Feb. ); vi, 1883, 343 (Guaymas, Sonora, Dec, Apr.). — Brew- 

 ster, Auk, ii, 1885, 198 (Port Lobos, Sonora, Aug. 20). — Salvin and Godman, 

 Biol. Centr.-Am., Aves, i, 1886, 382 (Guaymas) . — Sharpe, Cat. Birds Brit. 

 Mus., xii, 1888, 680, excl. syn. part (Cape St. Lucas). 



{Passerculus'] rostratus Coues, Key N. Am. Birds, 1872, 136. 



P-lasserculusI rostratus Coues, Key N. Am. Birds, 2d ed., 1884, 363. 



[Passercidus rostratus'] var. rostratus Baird, Brewer, and Ridgway, Hist. N. 

 Am. Birds, i, 1874, 533. 



l^Zonotrichia] rostraia Gray, Hand-list, ii, 1870, 95, no. 7412. 



Ammodramus rostratus guttatusf (not Passerculus guttatus Lawrence) Price, Bull. 

 Coop. Orn. Club, i, 1899, 92 (mouth Colorado R.). 



PASSERCULUS ROSTRATUS SANCTORUM Coues. 

 SAN BENITO SPARROW. 



Similar to P. r. rostratus., but slightly smaller (except the bill) and 

 coloration grayer, with streaks on under parts darker. 



Adult «i«?e.— Length (skins), 121.92-137.16 (128.78); wing, 66.04- 



^ Fourteen specimens. ^ Eleven specimens. 



