1. C. principalis. A white stripe on each side of the neck. Bristly feathers at the base of the bill white.
White neck-stripe not extending to the base of the bill. Black feathers of crest longer than the scarlet. Wing, 10.00; culmen, 2.60. Hab. Gulf region of United States … var. principalis.
White stripe reaching the base of the bill. Scarlet feathers of crest longer than the black. Wing, 9.50; culmen, 2.40. Hab. Cuba … var. bairdi.[126]
2. C. imperialis. No white stripe on the sides of the neck. More white on the wings. Bristly feathers at the base of the bill black. Hab. South Mexico; Guatemala.
Campephilus principalis, Gray.
IVORY-BILLED WOODPECKER.
Picus principalis, Linn. Syst. Nat. I, 1766, 173.—Wilson, Am. Orn. IV, 1811, 20, pl. xxxix, f. 6.—Wagler, Syst. Avium, 1827, No. 1.—Aud. Orn. Biog. I, 1832, 341; V, 525, pl. lxvi.—Ib. Birds America, IV, 1842, 214, pl. cclvi.—Sundevall, Consp. Pic. 4. Dendrocopus principalis, Bon. List, 1838. Campephilus principalis, Gray, List Genera, 1840.—Baird, Birds N. Am. 83.—Cab. & Hein. Mus. Hein. IV, II, 100.—Dresser, Ibis, 1865, 468 (breeds in Brazos and Trinity, Texas).—Gray, Cat. 53.—Allen, Birds E. Florida, 301. Dryotomus (Megapicus) principalis, Bon. Con. Zyg. Aten. Ital. 1854, 7. Dryocopus principalis, Bon. Consp. 1850, 132. White-billed Woodpecker, Catesby, Car. I, 16.—Pennant, Latham.
Sp. Char. Fourth and fifth quills equal; third a little shorter. Bill horn-white. Body entirely of a glossy blue-black (glossed with green below); a white stripe beginning half an inch posterior to the commissure, and passing down the sides of the neck, and extending down each side of the back. Under wing-coverts, and the entire exposed portion of the secondary quills, with ends of the inner primaries, bristles, and a short stripe at the base of the bill, white. Crest scarlet, upper surface black. Length, 21.00; wing, 10.00. Female similar, without any red on the head, and with two spots of white on the end of the outer tail-feather.
Hab. Southern Atlantic and Gulf States. North to North Carolina and mouth of the Ohio; west to Arkansas and Eastern Texas. Localities: Brazos and Trinity Rivers, Texas (Dresser, Ibis, 1865, 468, breeds).
In the male the entire crown (with its elongated feathers) is black. The scarlet commences just above the middle of the eye, and, passing backwards a short distance, widens behind and bends down as far as the level of the under edge of the lower jaw. The feathers which spring from the back of the head are much elongated above; considerably longer than those of the crown. In the specimen before us the black feathers of the crest do not reach as far back as the scarlet.