Species.
A. Sides and lower tail-coverts rufous, in sharp contrast with the clear white of the abdomen. Tail-feathers with whitish patch on end of inner webs.
a. Head and neck black, sharply defined against the white of breast. Rump olive or blackish.
Black or dusky olive above.
1. P. maculatus. White spots on tips of both rows of wing-coverts, and on scapulars. No white patch on base of primaries. Hab. Mexico, and United States west of the Missouri. (Five races.)
2. P. erythrophthalmus. No white spots on wing-coverts, nor on scapulars. A white patch on base of primaries. Hab. Eastern Province of United States. (Two races.)
Bright olive-green above.
3. P. macronyx.[18] Scapulars and wing-coverts (both rows) with distinct greenish-white spots on tips of outer webs.
4. P. chlorosoma.[19] Scapulars and wing-coverts without trace of white spots. Hab. Table-lands of Mexico. (Perhaps these are two races of one species, macronyx.)
b. Head and neck ashy, paler on jugulum, where the color fades gradually into the white of breast. Rump and upper tail-coverts bright rufous.