570 BULLETIN 5 0, UNITED STATES NATIONAL MUSEUM 



from cere 22-24 (23.1); tarsus 78-87 (82.0); middle toe without 

 claw 43-50. 5 (47. 1 mm.).«i 



Range. — Resident in tropical forests from central Mexico (Tamau- 

 lipas — Altamira; Caballeros; Sinaloa — Mazatldn; Escuinapa; Vera- 

 cruz — Jalapa; Mirador; Colima — Colima; Sierra Aladre; Oaxaca — 

 Santa Efigenia; Tehuantepec; Guerrero — Acapulco; Chiapas — Tonala; 

 Campeche — La Tuxpena; Yucatdn — Chichen Itza; Puerto JMorelos); 

 south through Guatemala (Retalheuleu, Medio Monte, Savana 

 Grande, Hacienda California, Finca El Cipres); Honduras (La Ceiba, 

 San Pedro Sula, Atlantic slope) ; El Salvador (Lata Olomega, Puerto 

 del Triunfo, Sonsonate, San Sebastian, Lake Chanmico, Volcdn de 

 Conchagua, La Liberatad); Nicaragua (Realejo, San Juan del Sur); 

 Costa Rica (Carillo, Las Cruces de Candelaria, Rancho Redondo, 

 Angostura, Sipurio, Talamanca, San Jose, Boruca, Sibuhue, Irazii, 

 Bebedero, Bleon); and Panama (Perme, Obaldia, Changuinola, 

 Laguna de Pita, Loma del Leon, Mina de Chorche, Panama Railway 

 Line) ; to northern Colombia (Santa Marta area — Bonda, Neguange, 

 Cincinnati, Mamatoco; Dibulla; Fundaci6n, Rio Frfo, Magdalena; 

 Valencia); and Venezuela (Caicara, Cerro Yapacana, Maracaibo, 

 San Julian); probably to British Guiana (Roraima); Dutch Guiana; 

 and French Guiana. 



Type locality. — Realejo, Nicaragua. 



Carnijex naso Lesson, Echo du Monde Savant, vi, sec. 2, 1842, col. 1085 (Realejo, 

 Nicaragua) . 



Micrastur melanoleucus nasof Chapman, Bull. Amer. Mus. Nat. Hist., Iv, 1926, 

 221 (Mindo, Ecuador). — Griscom, Bull. Amer. Mus. Nat. Hist., Ixiv, 1932, 

 150 (Hacienda California, Finca El Cipres, Guatemala; rather uncommon in 

 forested areas in Central America); Bull. Mus. Comp. Zool., Ixxii, 1932, 

 316 (Perm^, Obaldia, Panama). — Huber, Proc. Acad. Nat. Sci. Philadelphia, 

 Ixxxiv, 1932, 212 (ne. Nicaragua; spec; colors; meas.). 



Micrastur semitorquatus naso Peters, Bull. Mus. Comp. Zool., Ixxi, 1931, 308 

 (Changuinola and Cricamola, Panama); Check-list IBirds of World, i, 1931, 

 277 (distr.).— Stone, Proc. Acad. Nat. Sci. Philadelphia, Ixxxiv, 1932, 301 

 (Honduras; reported but not definitely). — Griscom, BuU. Mus. Comp. 

 Zool., Ixxviii, 1935, 302 (Panama; scattered records from humid tropical 

 forests). — Deignan, Auk, liii, 1936, 188, in text (Honduras; spec; descr.). — 

 CoMPTON, Univ. California Publ. Zool., xlii, 1938, 189 (pterylosis) . — Dickey 

 and VAN RossEM, Birds El Salvador, 1938, 132 (El Salvador; distr.; habits; 

 colors of soft parts). — Sutton and Burleigh, Occ Pap. Mus. Zool. Louisiana 

 State Univ., No. 3, 1939, 27 (ne. Mexico; Tamaulipas; several records; 

 spec); Condor, xlii, 1940, 259, in text (Mexico; San Luis Potosf; spec). — 

 Tratlor, Publ. Field M\is. Nat. Hist., zool. ser. xxiv, 1941, 204 (Pacaitun, 

 Campeche; spec). — Blake and Hanson, Publ. Field Mus. Nat. Hist., zool. 

 ser., xxii, 1942, 526 (Michoacdn; Apatzingdn; spec). — Sutton and Pettin- 

 GiLL, Auk, lix, 1942, 10 (G6mez Farias region, sw. Tamaulipas; habits). 



" Seven specimens from Mexico, Honduras, Panama, and Colombia. 



