BIRDS OP NORTH AND MIDDLE AMERICA. 673 



AMt female.— LiGVigih. (skin), 98; wing, 48; tail, 43; exposed cul- 

 men, 10; tarsus, 19; middle toe, 12.' 



Salt marshes about San Francisco Bay, California (Marin, Contra 

 Costa, Alameda, and Santa Clara counties). 



OeotMypis trichm dnuosa Geinnell (J.), Condor, iii, May, 1901, 65 (Palo Alto, 

 Santa Clara Co., California; coll. J. Grinnell). 



GEOTHLYPIS TRICHAS MELANOPS (Baird). 

 JAIAPA YELLOW-THROAT, 



Similar to G. t. occidentalism, but wing and tail longer, the adult male 

 with under parts entirely rich yellow, and with feathers of occiput 

 and hindneck yellow beneath the surface. 



AMt maZe. —Forehead and loral, orbital, auricular, and malar 

 regions uniform deep black, forming a conspicuous "mask," this contin- 

 ued posteriorly, in an angular point, along each side of lower throat; 

 crown and supra-auricular region grayish white, the latter changing 

 gradually to yellow on sides of neck ; occiput and hindneck olive or olive- 

 brown supei-ficially, the feathers yellow or olive-yellow beneath the 

 surface, grayish dusky at base; rest of upper parts plain yellowish olive- 

 green ; under parts rich lemon yellow, the sides and flanks (especially the 

 latter) butfy olive; bill brownish black, or dark brown, with paler 

 tomia; iris brown; legs and feet pale buffy brown (in dried skins); 

 length (skins), 125-127(126); wing, 61-61.5 (61.2); tail, 59-61.5(60.2); 

 exposed culmen, 11-11.5 (11.2); tarsus, 21; middle toe, 14.5.^ 



Admit female. — " General color above dull olive-brown, slightly more 

 olive-yellow on the rump and upper tail-coverts; wing-coverts like the 

 back, the bastard- wing and primary -coverts dull brown; quills dark 

 brown, externally edged with olive, the first primary whitish along 

 the edge of the outer web; tail-feathers dull yellowish-olive, lighter 

 on the edges; head decidedly browner than the back, and somewhat 

 rufous-brown on the crown; lores ashy white; eyelid clearer whitish; 

 ear-coverts olive-brown, yellowish near the lower edge, and with pale 

 yellowish-brown shaft- lines; cheeks and under surface of body pale 

 yellow, becoming whiter on the abdomen, the sides of the neck and 

 breast washed with pale reddish-brown ; flanks and sides of the body 

 and thighs light earthy brown; under tail-coverts bright yellow pale 

 reddish brown near the vent; under wing-coverts and axillaries pale 

 yellow, brighter along the edge of the wing; quills dusky below; ashy 

 along the edge of the inner web. Total length, 132.1, culmen 12.7, 

 wing 57.1, tail 58.4, tarsus 20.3." " 



' One specimen. 

 'Two specimens. 



'Sharpe, Cat. Birds Brit. Mus., x, 1885, 356. (Measurements changed to 

 millimeters. ) 



3654— VOL 2—01 43 



