C. Tail lengthened and graduated; decidedly longer than the wings, which are very short, scarcely extending beyond the external base of the tail. Feet reaching but little beyond the middle of the tail. Species all streaked above; streaked or nearly unicolor beneath. No white on wings or tail. Outer lateral toe the longer. First quill not the shortest of the primaries. (Melospizeæ.)
Melospiza. Culmen and commissure nearly straight. Claws stout; hinder one as large as its digit. Tail-feathers rather broad. Body streaked beneath.
Peucæa. Culmen and commissure curved. Claws weak; hinder one not much curved, decidedly shorter than its digit. Tail-feathers narrow. Without streaks beneath, excepting a narrow maxillary stripe.
D. Tail rather short, and much graduated; longer than the wings; the midrib more median. Culmen curved. Tarsus considerably longer than middle toe. Outer toe longer. But little difference in the length of the quills; the outer ones much rounded; even the second quill is shorter than any other primary except the first.
Embernagra. Color, olive-green above.
Genus CENTRONYX, Baird.
Centronyx, Baird, Birds N. Am. 1858, 440. (Type, Emberiza bairdi, Aud.)
Gen. Char. Bill elongated; the lower mandible smaller; outlines nearly straight. Tarsus lengthened, considerably exceeding the middle toe. Lateral toes equal, not reaching the base of the middle claw. Hind toe very large; the claw rather longer than its digit, and in its elongation resembling Plectrophanes, but more curved; the digit and claw together rather longer than the middle toe and claw. Wings very long, reaching beyond the middle of the tail, and beyond the end of the coverts. Tertials shorter than the primaries, and but little longer than the secondaries. Tail short, much less than from the carpal joint to end of secondaries; little more than two thirds the entire wing. It is
slightly forked, and moderately rounded laterally; the feathers all acute. Color somewhat as in Passerculus.
This genus differs from Passerculus, as stated in the description of the species farther on. It would be taken for Plectrophanes on account of its lengthened hind claw, which, however, is more curved than in that genus; the tarsi are much longer, the tertials less elongated, and the coloration different, though closely resembling that of the female Plectrophanes. But one species has thus far been recognized.