BIRDS OF NORTH AND MIDDLE AMERICA. 473 



white, finely streaked with blackish; hindiieck, upper tail-coverts, and 

 under parts white, the lower portion of the first with a few roundish 

 spots of dusky; back, scapulars, and wing-coverts dull whitish, 

 coarsely and irregularly spotted with dusky grayish brown, this 

 forming an almost uniform area on lesser wing-covert region, the 

 anterior border of which is white; secondaries dusky, margined termi- 

 nally with white; primaries dark hoary gray, narrowly margined with 

 white, their inner webs mostly white but with a broad stripe along 

 shaft and around tip dusky gray; rec trices deep brownish gray becom- 

 ing paler gray basally, their tips margined with white; bill dull reddish 

 or brownish; legs and feet dusky. 



Adult male.— "Wing, 292-320 (309.4); tail, 115-165 (140.2); exposed 

 culmen, 59-65.5 (62.4); tarsus, 28-30.5 (29.5); middle toe, 22.5-23.5 

 (22.8).« 



Adult female. — Wing, 310; tail, 129; exposed c.ulmen, 57.5; tarsus, 

 28.5; middle toe, 20.^ 



Pacific coast of America, from San Francisco Bay, California, to 

 Chile (Coquimbo Bay, Sept., Nov.; Vina del Mar, near Valparaiso; 

 Valdivia, Jan.) ; accidental on Gulf coast of Texas (Corpus Christi, 

 July — ).'^ 



Sterna elegans Gambel, Proc. Ac. Nat. Sci. Phila., iv, 1848 (pub. 1849), 129 

 (Mazatlan, Sinaloa). — Baird, in Rep. Stansbury's Exped. Great Salt Lake, 

 1852, 335 (Mazatlan); Cat. N. Am. Birds, 1859, no. 684.— Lawrence, in 

 Baird, Rep. Pacific R. R. Surv., ix, 1858, 860; ed. 1860 (Birds N. Am.) 

 Atlas, pi. 94.— Saunders, Proc. Zool. Soc. Lond., 1876, 653 (monogr.); 1882, 

 521 (Callao Bay, Peru; Coquimbo Bay, Chile, Sept., Nov., crit.); Cat. Birds 

 Brit. Mus., XXV, 1896, 84 (Corpus Christi, Texas, July; La Union, Salvador, 

 Dec; San Mateo, Oaxaca, March; Chorillos, near Callao, Callao Bay, and 

 Iquique, Peru; Coquimbo Bay, Chile, Nov.; Vina de Mar, near Valparaiso; 

 Valdivia, Jan.). — Ridgway, Nom. N. Am. Birds, 1881, no. 682. — Coues, 

 Check List, 2d ed., 1882, no. 795. — Baird, Brewer, and Ridgway, Water 

 Birds N. Am., ii, 1884, 287.— Taczanowski, Orn. du P^rou, iii, 1886, 442.— 

 American Ornithologists' Union, Check List, 1886, and 2d ed., 1895, no. 

 66; 3rd ed., 1910, p. 43.— Bryant (W. E.), Proc. Calif. Ac. Sci., ser. 2, 1889, 

 252 (Magdalena Bay, Lower California). — Townsend, Proc. U. S. Nat. Mus., 



"■ Five specimens. 



b One specimen. 



<^ Specific records are as follows: 



California: Monterey Bay, Sept., Oct., 1896; San Francisco Bay. 



Lower California: La Paz, March; Magdalena Bay. 



Sonora: Guaymas, breeding. . 



Sinaloa: Mazatlan. 



Tepic: Isabella Island (breeding?). 



Oaxaca: San Mateo, March; Gulf of Tehuantepec. 



Salvador: La Union, Dec; Bay of Fonseca. 



Honduras: Bay of Fonseca. 



Peru: Callao Bay; Chorillos; Iquique. 



Chile: Coquimbo Bay, Sept., Nov.; Vina del Mar, near Valparaiso;. Valdivia, Jan. 



Texas: Corpus Christi, July 



