6lO PATAGONIAN EXPEDITIONS: ZOOLOGY. 



Genus HETEROSPIZIAS Sharpe. 



Type. 

 Heterospizias, Sharpe, Cat. Bds. Brit. Mus. i. p. i6o 



(1874); Hand-list Birds, i. p. 254 (1899) . . . H. nieridionalis. 

 Spizigeramts, Gray, Hand-list Bds. i. p. 9 (1869, nee 



Kaup) H. nieridionalis. 



Spizogevanus, Agassiz ( 1 844) = Spizigeranus. 



Hypomoyphnus, Cabanis (1844) H. nieridionalis. 



Geographical Range. — Northern and central portions of South America ; 

 casual in northern Patagonia (C. Burmeister). 



Heterospizias meridionalis (Latham). 



Rufous-headed Falcon, Lath. Gen. Syn. Suppl. p. 33 (1787). 



Falco meridionalis, Lath. Ind. Orn. L p. 36 (1790). 



Gavilan de estero acanelado, Azara, Apunt. L p. 72 (1802). 



Circns rnfitlus, Vieill. N. Diet. d'Hist. Nat. IV. p. 466 (1816). 



Falco rnfilans, Licht. Verz. Doubl. p. 60 (1823); Temm. PI. Col. I. pi. 25 



(8124.) 

 Aquila buzon, Spix. Av. Bras. L p. 6 (1824). 



Circus rntilans, Stephens in Shaw's Gen. Zool. XIII. part ii., p. 43 (1825). 

 Buteo rutilans. Less., Man. d'Orn. I. p. 104 (1828); Hartl. Ind. Azara, p. 



I (1847). 

 Hypofnorphnus rntilans, Cab. Arch. fur. Naturg. 1844, p. 264. 

 Rnpornis meridionalis, Kaup, Contr. Orn. 1850, p. 68. 

 Astiir rufnlus, Strickl. Orn. Syn. p. 422 (1855). 

 Buteogallns nieridionalis, Scl. P. Z. S. i860, p. 288. 

 Astitrina rntilans, Burm. La Plata Reise II. p. 436 (1862 : Tucuman); C 



Burm. An. Mus. Nac. Buenos Aires, III. part XI. p. 316 (1890: Rio 



Chico del Chubut, Patagonia). 

 Buteo meridionalis, Schl. Mus. Pays. Bas. II., Buteones, p. 17 (1862). 

 Urnbitinga meridionalis, Scl. & Salv. P. Z. S. 1867, p. 589, 1869, p. 252, 



p. 634 (Buenos Aires); iid. Nomencl. Av. Neotr. p. 119 (1873); 



Durnf Ibis, 1880, p. 362 (Salta). 

 Heterospizias meridionalis, Sharpe, Cat. B. Brit. Mus. I. p. 160 (1874); 



Barrows, Auk, I. p. 109 (1884: Entrerios); Scl. &: Huds. Argent. Orn. 



II. p. 63 (1899); Sharpe, Hand-list B. I. p. 254 (1899). 



General description. 

 Size. — Adult male. 



