68 PROCEEDIXGS OF THE XATIONAL MUSEUM vol 74 



Ibis, 1910, p. 615 ( Sapucay, Paraguay ; refs. ; crit. ) . — Grant. Ibis, 1911. 

 p. 88 (Riaeho Ancho, Argentina). — Bektoxi, Fauna Paraguaya, 1913, p. 

 60 (Alto Parana, Paraguay). — Arribalzaga, El Hornero, vol. 2. 1920, p. 

 97 (Kesistencia, Cbaco, Argentina). — Giacommeilli, El Hornero. vol. 3, 

 1923, p. 67 (Prov. La Rioja, Argentina). — PE3iHrrRA, El Hornero, vol. 3, 

 1923, p. 170 (San Isidro, Buenos Aires, Argentina). — Snethlage, Jourtu 

 f. Orn., vol. 76, 1928, p. 536 (range in N. E. Brazil). 

 Basileuterus aurlcapillus auricapilhis Hartert and Venturi, Nov. Zool., 

 vol. 16, 1909, p. 166 (Barracas al Sud, Ocampo, and Quebrada de los 

 Piedros, Argentina). — Dabbene, An. Mus. Nac. Buenos Aires, vol. 23, 

 1912, p. 348 (Paso Yunay, Paraguay; Paraguayan refs.). — IMarbilli, Mem. 

 Min. Obras Publicas, 1924, p. 656 (Prov. Buenos Aires, Argentina; 

 range). — Hellmayr, Nov. Zool., vol. 32, 1925, p. ISO (Corrientes, Argen- 

 tina, etc.; crit. on type) .—Wet more. Bull. U. S. Nat. Mus., No. 133, 1926, 

 p. 368 (Las Palmas, Argentina; Lazcano, Uruguay; crit.; habits). — Holt, 

 Bull. Am. Mus. Nat Hist., vol. 57, 1928, 314 (Serra do Itatiaya, Brazil; 

 local range). ^ 



Description. — Pileum -with two broad lateral stripes of black, meet- 

 ing in front, and reaching to the nape, and inclosing a median stripe 

 or spot which varies from Mars yellow to orange rufous on the vertex 

 (more or less overlaid by grayish feather-tipping), and is olive buff 

 on the nape; superciliaries, suborbital spot, and chin buffy olive; 

 broad transocular streak dusky blackish; subauricular region and 

 sides of the neck dull grayish; upper parts, and wings and tail 

 externally, dark citrine; under parts lemon chrome, paler on the 

 crissum, with more or less shading of sulphine yellow on the sides 

 and flanks; under wing-coverts yellowish white; bill brownish; feet 

 light brown ( in skin ) . ( Young stages not seen. ) 



Measurements. — Male: Wing, 55-61 (58); tail. 52-55 (53.5); bill, 

 9-11 (10); tarsus, lT.5-19.5 (18.5). Female: Wing, 53-58 (55.5); 

 tail, 50-54 (51.5) ; bill, 9.5-10.5 (10) ; tarsus, 17.5-19.5 (18.2). 



Range. — Eastern Brazil (Ceara) south to the Province of Buenos 

 Aires, Argentina, and west to Tucuman. 



Remarks. — Azara was the first author to mention this species, 

 which has figured extensively in the literature of South American 

 ornithology ever since. Unfortunately, however, Vieillot described 

 Azara's bird under the same heading as the Xorth American 

 Hehnitheros vermivoi'us, and the specific name of the latter was ac- 

 cepted without question for the present form until von Berlepsch 

 pointed out the error in 1881, substituting Swainson's name aun- 

 cap'iUus. Swainson gave "Mexico and Brazil"' as the habitat of 

 his new species; the former was, of course, wrong, and if it is 

 thought desirable to suggest a still more explicit type locality, I 

 would propose Rio de Janeiro, Brazil. 



The above description is based mainly on the series from Therezo- 

 polis, which I take to be typical. Skins from Argentina and Para- 

 guay are duller green above, and are with difficulty separable from 



