2. Melanerpes formicivorus. ♀ Cal., 25035.
3. Melanerpes angustifrons. ♂ Cape St. Lucas, 25947.
4. Melanerpes angustifrons. ♀ Cape St. Lucas, 25949.
Dr. Coues calls attention to extraordinary differences in the color of the iris, which varies from white to red, blue, yellow, ochraceous, or brown. A mixture of blue, he thinks, indicates immaturity, and a reddish tinge the full spring coloration.
The male of this species has a white forehead extending a little backwards of the anterior edge of the eye, the rest of the top of head to the nape being red. The female has the white forehead, and a quadrate occipito-nuchal red patch, a black band about as broad as the white one separating the latter from the occipital red. The length of the two anterior bands together is decidedly greater than that of the posterior red. In both sexes the jugulum is entirely and continuously black. Anteriorly (generally with a red spot in its anterior edge) and on the feathers of its posterior border only are these elongated white spots, on each side the shaft, the feathers of the breast being streaked centrally with black. The inner webs of the secondaries have an elongated continuous patch of white along their internal edge, with a very slight, almost inappreciable, border of black; this white only very rarely converted partly or entirely into quadrate spots, and that never on the innermost quills marked with white. Specimens from California are very similar to those from the Rocky Mountains and the Rio Grande Valley, except, perhaps, in being larger, with longer and straighter bill.