BIRDS OF NORTH AND MIDDLE AMERICA 403 



1943, 28 (Tabasco, Mexico). — American Ornithologists' Union, Auk, 

 Ixi, 1944, 445 (nomencl.). 



Buteogallus (Urubilinga) anthracinus anthracinus Sassi, Temminckia, iii, 1938, 

 300 (Costa Rica: Puerto Jiminez, Bebedero, Waldeck). 



Buteogallus anlhracinus Sutton and Pettingill, Auk, lix, 1942, 9 (G6mez Farias 

 region, sw. Tamaulipas; spec). 



Morphnus mexicanus DuBus, Bull. Acad. Roy. Belg., xiv, pt. 2, 1847, 102 (Ta- 

 basco, s. Mexico; Guatemala; coll. Nat. Hist. Mus. Brussels). — Lafresnaye, 

 Rev. Zool., 1848, 239. 



Urubitinga mexicana Bonaparte, Rev. et Mag. Zool., vi, 1854, 488. 



Buteogallus anthracinus micronyx van Rossem and Hachisuka, Trans. San 

 Diego Soc. Nat. Hist., viii, 1937, 361 (Arizona: Arivaipa Creek, Graham 

 County; w. Chihuahua and s. Sonora; descr. ; crit.). ^Anonymous, Auk, 

 Iv, 1938, 309, in text (Arizona). — van Rossen, Occ. Pap. Mus. Zool. Louisi- 

 ana State Univ., No. 21, 1945, 59 (Sonora; common summer res.). 



Buteogallus anthracina micronyx Grinnell and Miller, Pacific Coast Avif., 

 No. 27, 1944, 561 (California; hypothetical). 



Buteogallus anthracinus sublilis (not of Thayer and Bangs) Marshall, Condor, 

 xlv, 1943, 22 (El Salvador: Lake Olomega; imin. spec). 



BUTEOGALLUS ANTHRACINUS CANCEIVORUS (Clark) 



Antillean Crab Hawk 



Adult (sexes alike). — Similar to that of Buteogallus anthracinus 

 anthracinus, but has the feathers of the hind neck and back spotted 

 with pale tawny-buff instead of whitish; has the general coloration of 

 the whole body deeper black, and the white tail band averaging slightly 

 narrower. Above deep sooty black, the feathers of the occiput, nape, 

 and upper back basally white, the white becoming pale tawny-buff 

 below the black terminal areas, and this color showing through the 

 black producing an irregularly mottled appearance; wings deep sooty 

 black like the back, the secondaries mottled and incompletely banded 

 with dark grayish and slightly ferruginous grayish, the ferruginous 

 wash predominating on the inner webs, the dark grayish on the outer 

 ones; the primaries mottled with whitish basally on the inner webs; 

 the shafts whitish; upper and under tail coverts tipped with whitish; 

 rectrices basally mottled with whitish, then broadly black, then 

 crossed by a broad white band near the middle of their length, followed 

 by a still broader black band, terminally margined with white; the 

 shafts of the rectrices white at the base, becoming black in the proxi- 

 mal black band and remaining black to the tip on the upper surface, 

 but becoming white again below through the broad white band; cere 

 and base of bill orange; tip of bill blackish; iris brown; feet orange. 



Juvenal. — Similar to that of Buteogallus anthracinus anthracinus, 

 but with the outer webs of the secondaries abundantly flecked with 

 tawny-chestnut in their terminal halves. 



Natal down. — Not known. 



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