BIRDS OF ISrORTH AND MIDDLE AMERICA. 411 



edging and the olive ground color), the black sometimes prevailing over 

 the olive or olive-brown; middle and greater wing-coverts tipped with 

 white, forming two bands; three to four outer tail-feathers with 

 large terminal spaces of white, chiefly on inner webs; the outermost 

 rectrix with the outer web edged with white {sometimes mostly white), 

 and with the white space on inner web 18.29-38.10 (averaging 28.1:5) 

 in length; breast and abdomen white; sides and Hanks rufous- tawny 

 (rarely varying to cinnamon-buff), occasionalh" with dusky spots or 

 bars; anal region and under tail-coverts paler cinnamon-tawny or 

 ochraceous-buff'; bill black (mandible paler in winter); legs and feet 

 brownish; length (skins), 185.93-208.79 (199.14); wing, 80.52-92.71 

 (87.12); tail, 91. 95-106. 17 (100.08); exposed culmen, 13.97-15.49 

 04.73); tarsus, 27.43-31.24(29.72); middle toe, 18.29-21.08 (19.81); 

 hind claw, 10.16-14.22 (12.19); white on lateral tail-feathers, 18.29- 

 38.10 (28.45).^ 



Adult female. — Similar to adult male, l)ut black of throat and chest 

 duller, more sooty, sometimes dark sooty brown rather than sooty 

 black; pileum dark sooty brown or olive-brown, usualh" streaked with 

 blackish; back and scapulars with more of olive or olive-brown and less 

 of black than in the male; length (skins), 184.15-204.22(196.34); wing, 

 76.20-88.39(83.31); tail, 86.87-100.33 (95.2.5); exposed culmen, 13.46- 

 15.49 (14.73); tarsus, 27.43-30.48 (29.21); middle toe. 18.29-20.83 

 (19.81); hind claw, 10.67-12.70 (11.94); white on lateral tail-feathers, 

 28.86-31.75 (27.69).- 



Youn<i male. — Above similar to the adult male but duller, the 

 darker areas sooty rather than black; median portion of throat and 

 chest, together with breast and abdomen, dull pale bufl'v. streaked with 

 blackish; sides of throat and chest mainh' blackish; sides and Hanks 

 light buffy brownish, streaked with blackish; under tail-coverts brown- 

 ish buffy. 



Young female. — Much browner than young male, the pileum and 

 hindneck olive-brown, the back and scapulars more fulvous brown, 

 broadly streaked with black and pale fulvous or brownish buffy; under 

 parts deep dull buffy or pale clay color, the lower throat and chest 

 heavily streaked with dusky, sides of throat mainly dusk}', and sides 

 narrowly streaked with the same. 



Central and southern portions of Mexican plateau, in States of San 

 Luis Potosi (Jesus Maria), Zacatecas (Plateado), Hidaigo (Real del 

 Monte; El Chico; Tulancingo; San Augustin; Sierra de Pachuca; 

 Irolo), Puebla (Chalchicomula; Tezuitlan; Mount Orizaba); Tlaxcala 

 (Mount Malinche), Mexico (Amecameca) and Guanajuato, and Terri- 

 tory of Tepic (Santa Teresa); southward through high mountains of 

 Oaxaca and Chiapas to highlands of Guatemala (Quezaltenango; Chi- 

 maltenango; Todos Santos). 



^ Thirty-four specimens?. -' Ten specimens. 



