520 BULLETIN 5 0, UNITED STATES NATIONAL MUSEUM 



Adult female. Wing 315-340 (326.1); tail 233.5-254 (244.3); ciilmen 

 from cere 20.1-23 (21.4); tarsus 85-98 (91.4); middle toe without 

 claw 35-42 (38.7 mm.).«i 



Range. — Resident in heavy forest from northeastern and north- 

 central Mexico (Tamaulipas — Cano Guiaves and Alta Mira; Vera- 

 cruz — C6rdoba; Yucatdn — -Pcto, Meco Island, Buctzotz, Shkolak; 

 Sinaloa — -Mazatldn, Presidio de Alazatlan, Rinconadas; Colima — ■ 

 Tecolapa; Oaxaca — ^Santa Efigenia, Cacoprieto; Chiapas — Tonala) 

 south through British Honduras (Orange Walk) ; Guatemala (Duenas; 

 Savana Grande; Escuintla); Honduras (coastal belt; San Pedro); 

 Nicaragua (Ocotal; Chinandega); Costa Rica (Pozo Azula de Pirris; 

 Bolson; Guanacaste; Tenorio; Bebedero) to Panama east to the 

 Canal Zone, but not to Darien (Mina de Chorcha, Veraguas; Lion 

 Hill) . Rather rare throughout its range. 



Type locality. — Mexico. 



IschnoceJes niger DuBus, Bull. Acad. Roy. Belg., xiv, pt. 2, 1847, 102 (Mexico; 

 coll. Nat. Hist. Mus. Brussells) ; Esq. Orn., 1858, pi. 16. — Salvin, Proc. 

 Zool. Soc. London, 1870, 216 (Mina de Chorcha, Veraguas, Panama). 



Geranospiza niger Gray, Gen. Birds, i, 1849, 28. — Beristain and Laurencio, 

 Mem. y Rev. Soc. Cient. "Antonio Alzate," vii, 1894, 226 (Mexico; distr.). 



Geranospiza nigra Bonaparte, Consp. Gen. Av., i, 1850, 30. — ScLATERand Salvin, 

 Proc. Zool. Soc. London, 1870, 838 (coast of Honduras) ; Nom. Av. Neotr., 

 1873, 121 (Mexico to Veraguas).— Lawrence, U. S. Nat. Mus. Bull. 4, 1875, 

 39 (Santa Efigenia, Oaxaca; fresh colors of unfeathered parts). — Zeled6n, 

 Anal. Mus. Nac. Costa Rica, i, 1888, 127 (Pozo Azul de Pirris, Costa Rica). — 

 Richmond, Proc. U. S. Nat. Mus., xviii, 1896, 628 (Altamira, Tamaulipas). 



Geranospizias niger Sharpe, Cat. Birds Brit. Mus., i, 1874, 82 (Mexico), 456 

 (Panama). — Gurnet, List Diurn. Birds Prey, 1884, 26, part; Cat. Birds 

 Prey, 1894, 19, part. — Sharpe, Hand-list, i, 1899, 247 in part (Mexico to 

 Panama). — Salvin and Godman, Biol. Centr.-Amer., Aves, iii, 1901, 52 

 (Mazatldn and Presidio de Mazatldn, Sinaloa; Tecolapa, Colima; C6rdoba, 

 Veracruz; Santa Efigenia and Cacoprieto, Oaxaca; Tonald, Chiapas; Buctzotz, 

 Peto, Shkolak, and Meco Island, Yucatdn; Orange Walk, British Honduras; 

 Duenas, Savana Grande and Escuintla, Guatemala; San Pedro, Honduras; 

 Chinandega and Ocotal, Nicaragua; Pozo Azul de Pirris, Costa Rica; Mina 

 de Chorcha and Lion Hill, Panama). — Bangs, Auk, xxiv, 1907, 290 (Pozo del 

 Rio Grande, Costa Rica). — Carriker, Ann. Carnegie Mus., vi, 1910, 453 

 (Bolson, Tenorio, Guanacaste, and Bebedero, Costa Rica; habits). — Phillips, 

 Auk, xxviii, 1911, 73 (Canon Guiaves, Tamaulipas). — Reichenow, Die Vogel, 

 i, 1913, 374.— Stone, Proc. Acad. Nat. Sci. Philadelphia 1918, 249 (Panama, 

 Canal Zone). 



Geranospizias nigra Salvin, Ibis, 1889, 375 (Meco Island, Yucatdn). 



Geranospiza niger niger Swann, Monogr. Birds Prey, i, 1925, 156 (monogr.). 



Geranospiza nigra nigra Peters, Check-list Birds of World, i, 1931, 268. — Stone, 

 Proc. Acad. Nat. Sci. Philadelphia, Ixxxiv, 1932, 300 (Honduras; San 

 Pedro). — Griscom, Bull. Mus. Comp. Zool., Ixxviii, 1935, 301 (Panama — 

 heavy forest east to Canal Zone). — van Rossem, Birds El Salvador, 1938, 

 129 (distr. in El Salvador; habits; color of soft parts). — Sutton and Bur- 



•1 Six specimens from Costa Rica and El Salvador. 



