AUT. 7 EEVISION OF THE GENUS BAStLEUTERUS TODD 51 



Songo, Yungas, 1; Moiios (4,700 feet), 2; Vermejo (3,500 feet), 

 Santa Cruz, 6; Yungas of Cochabamba (3,600 feet), 1. Argentina: 

 Ledesma, Jujuy, 2. Unspecified, 2. Total, 36. 



BASILEUTERUS CHRYSOGASTER CHRYSOGASTER (von Tschudi) 



Setophaga chrysogaster von Tschudi, Arch. f. Naturg., vol. 10, 1844, p. 276 

 (Peru; orig. descr. ; type in coll. Mus. Neucliatel). — von Tschudi, Fauna 

 Peruana, Aves, 1844, p. 192 (Peru; descr. ; range). 



Basileuterus chrysogaster Baird, Rev. Amer. Birds, 1865, p. 242, note (diag.), 

 p. 244, part (in list of species). — von Berlepsch, .Journ. f. Orn., vol. 32, 

 1884, p. 283, note (crit.). — von Berlepsch and Stolzmann, Ornis, vol. 13, 

 1906, p. 107, in text (crit). 



Basileuterus diachlorns Cabanis, Journ. f. Orn., vol. 21, 1873, p. 316 

 (Amable Maria, Peru; orig. descr.; type in coll. Warsaw Mus.). — 

 Taczanowski, Proc. Zool. Soc. London, 1874, p. 509 (Monterico and 

 Amable Maria, Peru). — Sclater, Proc. Zool. Soc. London, 1883, p. 653, in 

 test (syn.). — von Berlepsch, Journ. f. Orn., vol. 32, 1884, p. 283, note 

 (crit). 



Basileuterus 'bivittatus (not Musoicnpa 'bivittata Lefresnaye and D'Or- 

 bigny) Taczanowski, Orn. Perou, vol. 1, 1884, p. 473, excl. syn. part, 

 Tables, p. 29 (Monterico and Amable Maria, Peru; descr.; refs.). — 

 Sharpe, Cat. Birds Brit. Mus., vol. 10, 1885, p. 391, part (Monterico, Peru ; 

 descr.; refs.). — von Berlepsch and Stolzmann, Ornis, vol. 13, 1906, p. 

 106 (Huayuapata, Peru; crit.). 



Basileuterus bivittatus (lapsus) Allen, Bull. Mus. Comp. Zool., vol. 3, 1876, 

 p. 353 (Coroico, Bolivia). 



Basileuterus bivittatus chrysogasier von Berlepsch and Stolzmann, Proc. 

 Zool. Soc. Loudon, 1896, p. 331 (La Merced, Peru; crit.). — von Berlepsch 

 and Hellmayr, Journ. f. Orn., vol. 53, 1905, p. 6 (crit. on tyi>e). — 

 Hellmayr, Arch. f. Naturg., vol. 85, A, 1919, p. 6 (Yahuamiayo, Peru; 

 range; crit.) ; Nov. Zool., vol. 32, 1925, p. 181 (localities; range). 



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

 meeting in front and more or less overlaid with dull green, and inclos- 

 ing a median coronal spot or streak of Mars yellow, overlaid by 

 sulphine yellow ; superciliaries and suborbital spot pale dull yellow ; 

 transocular streak dusky; upper parts in general between warbler 

 green and olive green, the wings and tail externally similar but 

 darker (near olive green) ; auricular region and sides of the neck like 

 the back; under parts rich yellow (lemon chrome), the sides and 

 flanks shaded with pyrite yellov/; under wing-coverts dull yellow; 

 bill and feet brownish (in skin). 



Measurements. — Male (seven specimens) : Wing, 61-66 (average, 

 63.5); tail, 52-55 (54); bill, 10-11 (10.8); tarsus, 18.5-21 (20). 

 Female (eight specimens) : Wing, 55-60 (57) ; tail. 48-51 (50) ; bill, 

 10.5-11 (10.8); tarsus, 17.5-20 (18.5). 



Range. — Central Peru, from the Department of Junin southeast- 

 ward to Lake Titicaca and the eastern boundary. 



Remarks. — Forty years went by after von Tschudi had described 

 this species before the true application of his name was pointed out 



