B. Sides ashy or tinged with ochraceous; lower tail-coverts ochraceous, not sharply contrasted with white on the abdomen, or else the abdomen concolor with the side. Head never black, and upper parts without light markings (except the wing in _fuscus_ var. _albicollis_).

6. P. chlorurus. Whole pileum (except in young) deep rufous, sharply defined. Whole throat pure white, immaculate, and sharply defined against the surrounding deep ash; a maxillary and a short supraloral stripe of white. Anterior parts of body streaked in young. _Hab._ Western Province of United States.

A History of North American Birds — Part 123

7. P. fuscus. A whitish or ochraceous patch covering the throat contrasting with the adjacent portions, and bounded by dusky specks. Lores and chin like the throat. _Hab._ Mexico, and United States west of Rocky Mountains. (Five races.)

A History of North American Birds — Part 123

8. P. aberti. Throat concolor with the adjacent portions, and without distinct spots. Lores and chin blackish. _Hab._ Colorado region of Middle Province, United States. (Only one form known.)

A History of North American Birds — Part 123

[18] _Pipilo macronyx_, SWAINSON, Phil. Mag. I, 1827, 434. Real del Monte, Mex.—IB. Anim. in Men. 1838, 347.—BP. Consp. 487.—SCLATER & SALVIN, 1869, 361. _Pipilo virescens_, HARTLAUB, Cab. Jour. 1863, 228, Mex.

SP. CHAR. Prevailing color above olive-green; the head and neck all round black, abruptly contrasted below with the white under parts; above passing insensibly into the green of the back; feathers of interscapular region obscurely dusky medially; sides and crissum rufous. Scapulars and greater and middle coverts with outer webs pale greenish-yellow at ends; these blotches faintly margined externally with olive-green. Edge of wing yellow; outer primary edged with whitish, edges of other primaries and of secondaries uniform olive-green. Fifth quill longest, fourth and sixth scarcely shorter; first shorter than ninth. Legs stout, claws much curved. Tail wanting in the single specimen before us (a male from the city of Mexico, belonging to Mr. G. N. Lawrence).

_Dimensions_ (prepared specimen): Wing, 3.70. Exposed portion of first primary, 2.30; of second, 2.73; of longest (measured from exposed base of first primary), 2.85. Bill: Length from forehead, .75; from nostril, .45. Legs: Tarsus, 1.14; middle claw, .38; hind toe and claw, .85; claw alone, .52.