Calamospiza bicolor.
5720 ♂
Gen. Char. Bill rather large, much swollen at the base; the culmen broad, gently but decidedly curved; the gonys nearly straight; the commissure much angulated near the base, then slightly sinuated; lower mandible nearly as deep as the upper, the margins much inflected, and shutting under the upper mandible. Nostrils small, strictly basal. Rictus quite stiffly bristly. Legs large and stout. Tarsi a little longer than the middle toe; outer toe rather longer than the inner, and reaching to the concealed base of the middle claw; hind toe reaching to the base of the middle claw; hind claw about as long as its toe. Claws all strong, compressed, and considerably curved. Wings long and pointed; the first four nearly equal, and abruptly longest; the tertials much elongated, as long as the primaries. Tail a little shorter than the wings, slightly graduated; the feathers rather narrow and obliquely oval, rounded at the end.
Color. Male, black, with white on the wings. Female, brown above, beneath white, with streaks.
PLATE XXIX.
1. Poocætes gramineus. D. C., 10147.