BIRDS OF NORTH AND MIDDLE AMERICA. 167 



Campephilus imperialis Baird, Rep. Pacific R. R. Surv., ix, 1858, pp. xxvii, 82 

 (Mexico); Cat. N. Am. Birds, 1859, no. 73.— Gray, List Birds Brit. Mus., 

 Capit. and Picid., 1868, 53.— Ridgway, Proc. U. S. Nat. Mus., iii, 1880, 236; 

 Auk, iv, 1887, 161 (n. Sonera, 50 m. from Arizona boundary). — Allen, Bull. 

 Am. Mus. N. H., v, 1893, 35 (Chuhuichupa and Rancheria de los Apaches, n. 

 w. Chihuahua; Bavispe R.,n.e. Sonora). — Nelson, Auk, xv, 1898, 217, pi. 3 

 (near Patzcuaro, Michoacan; Jalisco; Zacatecas; Durango; biography). — 

 Smith (A. P.), Condor, x, 1908, 91 (w.-centr. Chihuahua, 50 m. w. of Ter- 

 razas). 



[CampepMlus] imperialis Gray, Hand-list, ii, 1870, 187, no. 8621. — Sclatee and 

 Salvin, Nom. Av. Neotr., 1873, 98. 



C[ampophilus] imperialis Cabanis and Heine, Mus. Hein., iv, heft 2, 1863, 101. 



Campophilns imperialis Hargitt, Cat. Birds Brit. Mus., xviii, 1890, 465 (Ciudad 

 Durango, Durango).— Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1895, 

 444 (Sierra Madre, Sonora; Ciudad Durango; Sierra de Valparaiso and Sierra 

 de Juanacatlan, Jalisco). 



[Campophilus] imperialis Heine and Reichenow, Nom. Mus. Hein. Orn., 1890, 

 216.— Sharpe, Hand-list, ii, 1900, 228. 



[Dryocopus] imperialis Bonaparte, Consp. Av., i, 1850, 132. 



Dryotomus imperialis Cassin, Illustr. Birds Calif., Tex., etc., 1855, 285, pi. 49. 



[Megapicus] imperialis Bonaparte, Ateneo Italiano, ii, 1854, 122 (Consp. Volucr. 

 Zygod., 1854, 7). 



Megapicus imperialis Malherbe, Mon. Picid., i, 1861, 2; iii, 1862, pi. 1, figs. 1, 

 2,3. 



CAMPEPHILUS PRINCIPALIS (Linn«us). 



IVORY-BILLED WOODPECKER. 



Similar to C. imperialis but much smaller and with nasal tufts and 

 a stripe from suborbital region down side of neck white. 



Adult male. — General color glossy blue-black, the primaries and 

 tail duller black, or with bluish gloss less distinct; nasal plumes, 

 anterior portion of lores, stripe on sides of head and neck (commencing 

 usually beneath middle of eye and much narrower on this anterior 

 portion) white, these stripes continued posteriorly along each edge of 

 interscapular region; secondaries (except basal portion), terminal 

 portion of primaries (extensively), except five or six outermost, and 

 under wing-coverts, white; sometimes a few feathers on flanks and 

 anal region tipped with white; occipital crest bright red; bill ivory 

 white in life, deepening in very old skins to brownish yellow or 

 ochraceous-buff; iris clear lemon yellow; legs and feet (in life) light 

 gray, the larger scutella paler and somewhat yellowish gray, the 

 claws horn gray or pale horn color; length (skins), 420-493 (454); 

 wing, 240-263 (255.8); tail, 147-160.5 (154.4); culmen, 63-72.5 

 (68.2); tarsus, 42.5-46 (44.2); outer anterior toe, 30-34 (32.1).« 



Adult female. — Similar in coloration to the adult male, but crest 

 wholly glossy blue-black; length (skins), 452-488 (471); wing, 240- 



« Fifteen specimens. 



