368 BULLETIN 5 0, UNITED STATES NATIONAL MUSEUM 



Birds Brit. IMus., i, 1874, 203, part (in synonymy; part); Hand-list, i, 1899, 

 257, part (Panama) .^ — ^Ridgway, Man. North Amer. Birds, 1887, 210, part. — 

 Bangs, Proc. New England Zool. Club, ii, 1900, 15 (Lion Hill, Panama); 

 Auk, xxiv, 1907, 290 (Pozo del Rfo Grande, sw. Costa Rica). — Salvin and 

 GoDMAN, Biol. Centr. Amer., Aves, iii, 1900, 73, part (Panama). — Carriker, 

 Ann, Carnegie Mus., vi, 1910, 459 (El Pozo de Terraba, sw. Costa Rica). — 

 Reichenow, Die Vogel, i, 1913, 380. — Stone, Proc. Acad. Nat. Sci. Phila- 

 delphia, 1918, 249 (Gatun; Panama Canal Zone; spec). — Hallinan, Auk, 

 xli, 1924, 311 (Mindi, C. Z., Panama; food). 



Asturina nitida nitida Ridgway, in Baird, Brewer, and Ridgway, Hist. North 

 Amer. Birds, iii, 1874, 245, part (Panama). — Todd and Carriker, Ann. 

 Carnegie Mus., xiv, 1922, 153 (Bonda, Don Diego, Mamatoco, Dibulla, 

 Colombia). — Sturgis, Field Book Birds Panama Canal Zone, 1928, 133 

 (Panama Canal Zone; descr.). — Peters, Check-list Birds of World, i, 1931, 

 241 part (e. Panam^). — Anonymous, El Hornero, vi, 1935, 188, part 

 (Panama). 



Asturina nitida costaricensis Swann, Synop. Accip., ed. 2, 1922, 90 (Pozo del 

 Rfo Grande, Boruca, sw. Costa Rica; coll. Mus. Comp. Zool.); Monogr. 

 Birds of Prey, i, 1930, 434 (monogr.). — Bangs, Bull. Mus. Comp. Zool., Ixx, 

 1930, 189 (type in Mus. Comp. Zool.). — Darlington, Bull. Mus. Comp. 

 Zool., Ixxi, 1931, 366 (near Rio Frio, Magdalena, Colombia; crit.). — Peters, 

 Check-Hst Birds of World, i, 1931, 241.— Griscom, Bull. Mus. Comp. Zool., 

 Ixxii, 1932, 314 (Perm^, Obaldia, ea. Panama); Ixxvii, 1935, 299 (Panama 

 records). 



Buleo nitidus blakei Hallmayr and Conover, Cat. Birds Amer., pt. 1, No. 4, 

 1949, 160 (new name for B. n. costaricensis Swann, not B. borealis costari- 

 censis Ridgway). 



Genus PARABUTEO Ridgway 



Antenor (not of Montfort, 1808) Ridgway Proc. Boston Soc. Nat. Hist., xvi» 

 May 21, 1873, 63, footnote: in Baird, Brewer, and Ridgway, Hist. North 

 Amer. Birds, iii, 1874, 248. (Type, by original designation, FaJco unicincta 

 Temminck.) 



Parahiiteo Ridgway, in Baird, Brewer, and Ridgway, Hist. North Amer. Birds, 

 iii, Jan. 1874, 250. (To replace Antenor Ridgway, preoccupied.) 



Erythrocnema Sharpe, Cat. Birds Brit. Mus., i, June 1, 1874, 84. (Type by 

 original designation, Falco unicinctus Temminck.) 



Asturina Reichenow, Die Vogel, i, 1913, 380, part. 



(?) Spizogeranus (not Spizageranus Kaup, 1844) Bonaparte, Rev. INIag. Zool., 

 ser. 2, ii, 1850, 488. (Type, by original designation, ^'unicinctus de Tem- 

 minck.") 



Kather large Buteoninae (wing about 296-371 mm.) with tail more 

 than three-fifths as long as wing, its tip distinctly rounded; distance 

 from most anterior point of cere to tip of maxilla equal to distance 

 from same point to anterior angle of eye; hallux one-third as long as 

 tarsus; loral region essentially nude (with only sparse fine bristles), 

 the adults plain dark brown with chestnut or deep cinnamon-rufous; 

 lesser and under wing coverts and thighs, white tail coverts, and base 

 and tip of tail white. 



Bill relatively long, the distance from margin of cere in front of 

 strinol to tip of maxilla almost equal to distance from same point to 



