226 XORTII AMERICAN BIRDS. 



Benealli wliitp. with a slif;lil (icliraceous tingo; cheeks, throat, ami juguhin. with fine 

 narrow slreai<s ol' <hisls-y-l)rown : breast, sides, and abdomen with broader longitudinal 

 stripes of clear umber (less slaty than the back), each with a darker shaft-line; on tlic 

 Hanks the stripes are more oval; tibiic more ding-y, markings fainter an<l somewhat 

 transverse ; anal region and lower tail-coverts immaculate white. 



YoiUKj female (VJ,(I'_';?, Fort Tejon, California; J. Xantus). Similar in general appear- 

 ance to the young male. Markings beneath broader, and slightly sagittate in form, 

 becoming more transverse on the Hanks; paler and more reddish than in the young 

 male ; tibiic with brownish-rulbus prevailing, this in form of broad tinnsvorsc spots. 



Had. Entire continent of North America, south to Panama; Bahamas (but not West 

 Indies, where rejilaced by A. frinfjillokh.i, Vig.). 



Localities: Oaxaca (Sci.. 1858, 20o) ; Central America (Sci,. Ibis, I, 218); Bahamas 

 (Bryant, Pr. Bost. Soc. VII, 18u!)) ; City of Mexico (Sci.. 1804, 178); Texas, San 

 Antonio (Dukssku, Il)is, ISOti. 324) ; Western Arizona (Coues) ; Mosquito Coast (Scl. & 

 Sai.v. 1807, 280) ; Costa Rica (Lawu. IX, 134). 



LIST OK SPECIMEN'S EXAMINED. 



National Museum, ol ; Philadelphia Academy, 14 ; New York Museum, 7 ; Boston 

 Society, 5; Museum, Cambri<lge, 0; Cab. G. N. Lawrence, I; Coll. R. Ridgway, 4; 

 Museum W. S. Brewer, I. Total, 02. 



Jfeamiremenls. 



Specimens I'roiu different regions vary but little in size. The largest are 

 4,198, 9 , San Francisco, Cal., winter, 10,957, 9, Hudson's Bay Territory, and 

 55,016, 9, MazatUm, Mexico, in which the wing ranges from 8.40 to 8.50, 

 the tail 7.00. The smallest females are 45,820, Sitka, Alaska, and 11,791, 

 Simialimoo, W. T., in which the wing measures about 7.80. A female 

 (32,499) from Orizaba, Mexico, one (8,513) from Fort Yuma, Cal., and 

 one (17,210) from San Nicholas, Lower California, liave the wing 8.00, 

 which is about the average. Tlie largest males are 54,336, Nulato, Alaska, 

 58,137, Kodiak, Alaska, 27,067, Yukon, mouth of Porcupine, and 55,017, 

 Mazatlau, Mexico, in Avhich the wing measures 7.00, the tail 5.60. The 

 smallest males are 5,990, Onmge, N. J., 8,514, Shoalwater Bay, Vv^ T., 

 21,338, Siskiyou Co., Cal., 37,428, Orizaba, Mexico, and 5,584, Bridger's 

 Pass, Utah; in this series the wing measures 6.50-0.70, the tail 5.40 - 

 5.00. A specimen from Costa Rica measures : wing 0.70, tail 5.35. Thus 

 the variation in size Avill be seen to be an individual difference, rather than 

 characteristic of any region. Some immature specimens from tlie north- 

 west coast of North America (as 45,828, <J, Sitka, Pus. Am., 5,845, S, Fort 

 Steilacoom, W. T., 11,791, Simialimoo, Puget Sound, and 8,514, Shoalwater 

 Bay, W. T.) are much darker than others, the brown above inclining to 

 to blackish-sepia ; no other differences, however, are observable. An adult 

 from the Yukon (54,337, 9) lias the rufous bars beneath remarkably faint, 

 althou'di well defined; another (19,384, 9, Fort Kesolution), in immature 



