2. C. psaltria. Inner webs of tail-feathers never whitish terminally. ♂. Beneath yellow, including the lower tail-coverts; above black, with or without olive-green on the back. ♀. Without any black, the yellow duller.
Tail with white on inner webs; tertials with large white spots.
♂. Auriculars, nape, back, and rump olive-green. Hab. Rocky Mountains of United States … var. psaltria.
♂. Auriculars black; nape, back, and rump green clouded with black. Hab. Arizona … var. arizonæ.
♂. Auriculars, nape, back, and rump entirely black. Hab. Middle America … var. mexicana.
Tail without any white on inner webs; tertials without white spots.
♂. Auriculars, nape, back, and rump wholly black. Hab. Panama and New Granada … var. columbiana.
b. Terminal half of outer webs of wing-coverts and secondaries yellow.
3. C. lawrencii. Prevailing color ashy, lighter beneath. ♂. A large patch on the breast, the rump, and most of the outer surface of the wing, yellow; forehead, crown, lores, all round base of bill, chin, wings (beneath the yellow), and tail black. ♀. Lacking the black, and with the yellow only indicated. Hab. California and Southwestern Arizona.
B. Whole body and head thickly streaked; bases of tail-feathers yellow. Sexes alike. (Astragalinus.)