Page:Birds of North and Middle America partV Ridgway.djvu/216

188 Range. — Southeastern Mexico to southeastern Brazil. (Many species. )

a. Pileum partly rufous, or else chest rufous. (Adults.)
 * b. Pileum dull brown; chest cinnamon-rufous or chestnut-ruious. (Southeastern Mexico to Honduras)

Synallaxis erythrothorax, adults (p. 189).
 * bb. Pileum partly cinnamon-rufous or rufous-chestnut; chest grayish or white.
 * c. Greater wing-coverts and basal portion of primaries cinnamon-rufous or chestnut-rufous; chest slate-gray to blackish slate. (Synallaxis pudica.)
 * d. Paler, the back, etc., olive-brown, tail brown, chest dull slate color or slate-gray. (Eastern Panamá to western Ecuadór.)

Synallaxis pudica pudica (p. 191).
 * dd. Darker, the back, etc., dark sooty brown, tail blackish brown, chest dark slate to blackish slate. (Western Panamá to southern Honduras.)

Synallaxis pudica nigrifumosa, adult (p. 192).
 * cc. Greater wing-coverts and basal portion of primaries light brown or broccoli brown; chest light gray to white. (Synallaxis albescens.)
 * d. Chest distinctly gray; brown of back, etc., darker.
 * e. Larger (wing averaging 54 or more in male, more than 53 in female; tail averaging more than 69 in male, more than 66 in female).
 * f. Slightly paler and smaller (wing averaging 54 in male, 55 in female; tail 69.7 in male, 73.5 in female). (Margarita Island, Venezuela.)

Synallaxis albescens nesiotis (extralimital).
 * ff. Slightly darker and larger (wing averaging 56 in male, 54.7 in female; tail averaging 73 in male, 70.4 in female). (Colombia to Cayenne and Amazon Valley.)

Synallaxis albescens albigularis (extralimital).
 * ee. Smaller (wing averaging 52.2 in male, 49.9 in female; tail averaging 65.8 in male, 62.9 in female). (Southwestern Costa Rica and western Panamá)

Synallaxis albescens latitabunda (p. 194).