BIRDS OF NORTH AND MIDDLE AMERICA. 167 



CampepMhbs imperidlia Baied, Rep. Pacific R. R. Surv., ix, 1858, pp. xxvii, 82 

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

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

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

 Am. Mus. N. H., v, 1893, 35 (Chuhuichupa and Rancheria de loa 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). 



[Campephilus] impmalis Geat, Hand-list, ii, 1870, 187, no. 8621. — Sclatee and 

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



Clampophilus] impmalis Oabanis and Heine, Mus. Hein., iv, heft 2, 1863, 101. 



Campophihis imperialis Haegitt, Cat. Birds Brit. Mus., xviii, 1890, 465 (Ciudad 

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

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

 de Juanacatlan, Jalisco). 



[Campophihis] imperialis Heine and Rbichbnow, Nom. Mus. Hein. Om., 1890, 

 216.^Shaepe, Hand-list, ii, 1900, 228. 



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



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



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

 Zygod., 1854, 7). 



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

 2,3. 



CAMPEPHILUS PRINCIPALIS (Linnaeus). 



IVORY-BILLED WOODPECKEK. 



Similar to 0. 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 yeUow or 

 oehraceous-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. 



