BIRDS OF NORTH AND MIDDLE AMERICA. 35 



with white, this most extensive on lateral pair,*^ the blackish portion 

 of which is edged, on both webs, with pale buff or buffy white, the 

 pair next to middle ones with proximal thhd or more grayish brown; 

 outer surface of wings (except proximal coverts and secondaries) 

 mostly bright rufesccnt brown or russet, passing on distal portion of 

 primaries into grajdsh brown; lores and upper half (or more) of 

 auricular region dull black or slate-black in strong contrast with 

 color of pUeum, the two areas narrowly connected beneath bare 

 orbital space; lower portion of suborbital and auricular regions, malar 

 region, and chin very pale buff or buffy white, passing into dull 

 warm buff on throat and other under parts, the color deeper on 

 flanks, thighs, and under tail-coverts; under wing-coverts clear warm 

 buff, the under surface of remiges similar proximally, but deepening, 

 through a more rufescent hue, on middle portion, the distal portion 

 grayish brown; maxilla black; mandible yellow, tipped with black; 

 bare orbital space yellow; legs and feet horn color in dried skins (pale 

 bluish gray in life ?). 



Adult maZe.— Length (skins), 317-323 (320); wing, 138-138.5 

 (138.2); tail, 165-172 (168.5); exposed culmen, 29-29.5 (29.2); tarsus, 

 29-30.5 (29.7); outer anterior toe, 20-21 (20.5).^ 



Cocos Island, Pacific Ocean, off Costa Rica. 



Cocq/zus ferrugineus Gould, Proc. Zool. Soc. Lond., 1843 (pub. Dec, 1843), 105 

 (Cocos Island; coll. Mus. Zool. Soc. Lond.); Zool. Voy. "Sulphur", vol. i, no. 

 4, Jan. 1, 1844, 46, pi. 29.— Bonaparte, Consp. Av., i, 1850, 97, footnote.— 

 ScLATER, Proc. Zool. Soc. Lond., 1870, 167 (monogr.). — Shelley, Cat. Birds 

 Brit. Mus., xix, 1891, 303.— Townsend (C. H.), Bull. Mus. Comp. Zool., 

 xxvii, 1895, 124. — Snouguass and Heller, Proc. "Wash. Ac. Sci., iv, 1902, 

 517 (description). — Carriker, Ann. Carnegie Mus., vi, 1910, 563. 



[Cocq/zus] ferrugineus Gray, Hand-list, ii, 1870, 211, no. 8935. — Sclater and 

 Salvin, Norn. Av. Neotr., 1873, 108.— Sharpe, Hand-list, ii, 1900, 163. 



P[iaya]femiginea Gray, Gen. Birds, ii, 1847, 457. 



N[esococcyx] ferrugineus Cabanis and Heine, Mus. Hein., iv. Heft i, 1863, 79. 



COCCYZUS MELACORYPHUS Vieillot. 



AZARA'S CTTCKOO. 



Similar in coloration of plumage to 0. minor, but bill wholly black 

 and size much less. 



Adults (sexes alike). — Pileum slate color or deep slate-gray (some- 

 times tinged with grayish brown), the hindneck sometimes similar 

 but usually more broA\Tiish; rest of upper parts plain grayish brown 

 (hair brown to broccoli brown), very faintly glossed with bronzy, 

 the middle pair of rectrices blackish terminally; second pair of 

 rectrices (from middle) black distally (sometimes for greater part), 



« The white tip about 35.5 mm. in extent on outermost pair and about 10 mm. on 

 pair next to middle ones. 



& Two specimens. (No female or young specimen examined.) 



