200 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



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

 paler brown (darker terminally); iris brown; legs and feet light 

 brownish. 



Adult wwZc— Length (skins), 129.54^-144. 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); tersus, 22.35-23.37 

 (22.86); middle toe, 15.75-18.08 (17.02).' 



Adult female.— Ijength (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 Bay (?); in winter south 

 along both coasts of Lower California to Cape St. Lucas and Todos 

 Santos Island and along coast of Sonora as far as Guaymas. 



Emberiza rostrata Cassin, Proc. 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 Oknithologists' Union, Check List, 1886, no. 544. — Geinnell, 

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

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



A.[mmodramus'] rosiraius Eidgway, Man. N. Am. Birds, 1887, 410. 



Passerculus rostratus Baird, Eep. 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, California). — 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. IT. S. Nat. Mus., v, 1883, 537 (La Paz, Lower Cali- 

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

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

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

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



IPasserculus] rostratus Coues, Key N. Am. Birds, 1872, 136. 



P.lasserculm} rostratus Coues, Key N. Am. Birds, 2d ed., 1884, 363. 



\_Passerculus rostratusi var. rostratus Baird, Brewer, and Ridgway, Hist. N. 

 Am. Birds, i, 1874, 533. 



IZonotrichia'] rostrata Gray, Hand-list, ii, 1870, 95, no. 7412. 



Ammodramus rostratus guttaiusf (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 male.— Length (skins), 121.92-137.16 (128.78); wing, 66.04- 



' Fourteen specimens. '' Eleven specimens. 



