672 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



ries with broad bars or bands of dusky, the secondaries with much 

 narrower zigzag bars of the same; bill grayish black; iris brown. 



Adult male.— Length (skins), 330-345 (335) ; wmg, 240-244 (241.3) ; 

 tail, 127-129.5 (128.7); culmen (from cere), 20.5-21.5 (20.8).« 



Adult female.— Length (skins), 350-385 (369); wing, 240-273 

 (255.8); tail, 132.5-150 (139.8); culmen (from cere), 21-23 (22).& 



Guatemala, through Costa Rica (San Jose; El Pozo de Terraba), 

 Panama (Boqueron, Chiriqui; Paraiso Station, Canal Zone), Colom- 

 bia (Guaduas; Don Amo; Bogota), Venezuela (San Antonio, Ber- 

 mudez; Lake of Valencia; Maracay, Aragua), Guianas, and Brazil to 

 southern Brazil (Novo Friborga, Sao Paulo; Pasage de la Bugre; 

 Faz. Esperanpa), Argentina, Paraguay, and northeastern Peru 

 (Tarapoto) . 



{??)[Stnx] americana Gmelin, Syst. Nat., i, pt. 1, 1788, 288 (South America; based 

 on Asio americanus Brisson, Orn. (ed. 1763), i, 145; Bubo ochro-dnereus 

 pectore maculoso Feuillee, Joum. des Obs., ed. 1725, 59). 



Otus americarus Jardine, Ann. and Mag. Nat. Hist., xviii, 1846, 118. — Bur- 

 MEisTER, Syst. Ueb. Th. Bras., ii, 1856, 123. — ^Euler, Journ. fur Orn., 1869, 

 248 (Brazil). — Sclater and Salvik, Proc. Zool. Soc. Lond., ]869, 634 (Argen- 

 tina^. — KoENiGSWALD, Joum. fur Orn., 1896, 382 (Sao Paulo, s. Brazil). 



{'}?)[Strix] mcxicana Gmelin, Syst. Nat., i, pt. 1, 1788, 288, no. 35 (Mexico; based 

 on Mexican Eared Owl Latham, Synop. Birds, 1, pt. 1, 123; Strix asio mexicana 

 Brisson, Orn., i, 498). — Latham, Index Orn., i, 1790, 54. 



Strix mexicana Daudin, Traite d'Orn., ii, 1800, 214. — Shaw, Gen. Zool., vii, 1809, 

 228. — ViEiLLOT, Nouv. Diet. d'Hist. Nat., vii, 1817, 40 (cites Ois. Am. Sept., 

 pL3). 



Strix mexicanus Audubon, Orn. Biog., iv, 1838, 574. 



o Three specimens. 



& Six specimens. 



Locality. 



MALES. 



Two adult males from Costa Rica 



One adult male from Venezuela 



SEX UNKNOWN. 



One specimen from Costa Rica 



One specimen from Colombia 



One specimen from Tobago 



FEMALES. 



One adult female from Panama (Chiriqui) 



One adult female from Colombia 



Two adult females from Venezuela 



One adult female from eastern Brazil (Bahia) 



One adult female from southwestern Brazil (Chapada, Mattogrosso) 



Wing. 



240 

 244 



250 

 230 

 280 



240 

 255 

 253 

 273 

 260 



Tail. 



Culmen, 

 from 

 ceres. 



129.5 

 127 



142.5 



149.5 



132 



139.5 



136.7 



144 



150 



20.7 

 21 



21 



22 



21.7 



23 



22.5 



The series which I have been able to examine is a meagre one and altogether insuffi- 

 'cient for deciding as to whether subdivision is required . 



