20 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM, 



(skins), 154-189 (165); wing, 70-78 (74); tail, 63-73.5 (67.3); 

 culmen, 22-25(23.4); tarsus, 24-25.5(24.8); middle toe, 15-16 (15.5).« 



Adult female. — Forehead pale buff to tawny-buff, barred with 

 black; rest of pileum cinnamon-rufous or rufous-chestnut, usually 

 with some of the feathers more or less distinctly barred or margined 

 terminally with black or dusky; rest of upper parts black, or sooty 

 black, broadly and sharply barred with buff or tawny-buff, the bars 

 on rectrices narrower, more or less curved, and more brownish; 

 sides of head and neck and entire under parts pale buff to tawny- 

 buff or nearly clay color,^ narrowly barred with black or sooty 

 black, the bars usually narrower on chin, throat, and abdomen; 

 bill, iris, legs, and feet as in adult male; length (skins), 149-175 

 (169); wing, 71-78 (74); tail, 65-72.5 (69.2); culmen, 21-25 (22.6); 

 tarsus, 24-26 (25); middle toe, 14-16 (15.3).'= 



Immature male. — Similar to the adult female (perhaps not always 

 distinguishable) but under parts less conspicuously barred, the chin, 

 throat, and abdomen nearly immaculate buff; iris reddish brown.** 



Nicaragua (Rio Escondido; Los Sabalos), Costa Rica (Angostura; 

 Sipiirio; Jimenez; Rio Frio; RioSucio; Bonilla; Gua3^abo; Carrillo; 

 Cuabre; El Hogar; San Carlos; La Cristina; La Vijagua), and 

 Panama (Santa Fe de Veragua; Mina de Chorcha; Calovevora; 

 Calobre; Santiago de Veragua; Lion Hill; Panama; Pintada, Cocl6 ; 



a Twenty specimens. 



b Sometimes the color aiiproacliea buffy white on sides of head, chin, and throat. 



c Twenty specimens. 



The specimen from Ecuad6r agrees much better in coloration with examples from 

 Panama than with true C. lineatus. 

 d Heyde, manuscript. 



