BIRDS OF NORTH AND MIDDLE AMERICA. 



713 



rim) of brownish black; under parts white, each feather, except on 

 throat, anal region, and under tail-coverts, with a distinct narrow 

 mesial streak of black, confluent vnth. narrow and irregular bars of 

 dark rusty brown, both the longitudinal and transverse markings 

 suffused here and there with cinnamon-rufous; throat narrowly 

 ban-ed with russet, the chest and sides broadly barred with the same, 

 the russet bars having narrow dusky margins; under tail-coverts 

 with rather distant narrow bars of rusty brown; legs pale bulfy, 

 narrowly barred in front and on outside with rusty brown or russet; 

 under wing-coverts pale buff, the outermost (near edge of wing) 

 irregularly barred with rusty and dusky. 



Adult male.— hengih (sldns), 206-242 (227); wing, 162-182 (170.9); 

 tail, 78-94.5 (88.3); culmen, from cere, 12.5-15 (14.1).« 



Adult female. — Length (skins), 200-250 (228); wdng, 162-183 

 (172.1); tail, 86-96 (91.2); culmen, from cere, 13.5-15.5 (14.6).* 



Costa Rica (San Jose; La Palma de San Jose; Escazu; San Juan; 

 Reytes; Volcan de Irazii; La Estrella de Cartago), Panama (Boque- 

 r6n and Divala, Chiriqui; Chitra, Ver^gua; Nata, Code; Lion Hill, 

 Canal Zone; San Miguel Island, Bay of Panama), and southward over 

 greater part of South America, east of Andes, as far as Peru (Garita 

 del Sol; Rio Cadena, Cuzco; Santa Ana; upper Rio Ucayali; Cashi- 

 boya; Chamicuros; Sarayacu; Yurimaguas), Bolivia (Province of 

 Chiquitos; Moxos; Caiza), Argentina (Ocampo; Cordova; Tucu- 

 man; Chaco; Pacheco; Entre Rios; Rio Paraguay; lower Rio Pilco- 

 mayo; Tapia), Paraguay (Sapucdy), and Uruguay (Concepcion). 



" Fourteen specimens. 



b Ten specimens. 



Locality. 



MALES. 



Sixadult males from Panama (mainland) 166.2 84.7 14 



Fiveadult males from San Miguel Island, Bay of Panama 172.9 90.5 14.5 



Three adult males from Costa Rica 172.5 90.5 13.8 



FEMALES. 



Two adult females from Paraguay 165.7 90.5 14 



One adult female from southeastern Brazil 165 89 14 



One adult female from Venezuela (Vall6) 173 93. 5 15 



One adult female (?) [male?] from Margarita Island, Venezuela 161 86 14.5 



Three adult females from San Miguel Island, Bay of Panama 180.8 95.5 15.2 



Two adult females from Costa Rica 174.2 S8.2 14.5 



Culmen 

 from 

 cere. 



So far as I am able to see, there is no difference in coloration between specimens 

 from Costa Rica and Panama on the one hand and those from Brazil, Paraguay, etc., 

 on the other, and the species seems to be remarkably uniform throughout this vast 

 extent of territory. 



