58 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 74 



Basileuteurus trlfdnntus Taczanowski, Orn. Perou. vol. 1. 18S4, p. 472, 

 Tables, p. 29, excl. syn. part ( Auouiiuarva anl Ropaybainba, Peru; 

 descr. ; crit.). — von Berlepscii aud Stolzmann. Proc. Zool. Soc. London, 

 1902, p. 58 (Auquiiuarca and Kopaybamba, Peru). — von Behilepsch and 

 Hellmayr, Journ. f. Orn., vol. 53, 1905, p. 7 (crit. on type). — von Beb- 

 LEP8CH and Stolzmann, Ornis, vol. 13, 1906, p. 107 (Rio Cadena and 

 Huaynapata, Peru).— Chapman, Bull. U. S. Nat. Mus., No. 117, 1921. p. 

 107 (Idma, Peru; range). 



Basileuterus tristriatus tristriatus Hellmayr, Proc. Zool. Soc. London, 

 1911, part (crit. on type). — Chapman, Amer. Mus. Nov. No. 143, 1924, 

 pp. 4, 5, 6, 7 (Idma, Utcuyacu, Chelpes, and Chaupe, Peru; Sabanilla, 

 Ecuador; range; crit.), p. S (meas.). — Chapman, Bull. Amer. Mus. Nat. 

 Hist., vol. 55, 1926, p. 599 (Sabanilla, Ecuador; range). 



Description. — Pileum and nape with two broad lateral stripes of 

 black, inclosing a narrower median stripe of deep olive buff, which 

 is strongly tinged with pinard yellow on the vertex; conspicuous 

 superciliaries, suborbital spot, and postauricular stripe deep olive 

 buff; lores and auricular region black; upper parts, including the 

 wings and tail externally, dark citrine; under parts lemon yellow, 

 the sides and flanks shaded with pyrite yellow, the breast faintly 

 and obscurely mottled with the same color, and the chin and max- 

 illary region pale olive buff, sometimes with a faintly indicated 

 maxillary stripe of dusky; under wing-coverts dull greenish white; 

 bill and feet brownish (in skin). 



Measurements. — Male (seven specimens) : Wing, 61-68 (average, 

 65.5); tail, 50-60 (56); bill, 10-11 (10.7); tarsus. 20-22 (21). 

 Female (six specimens) : Wing, 60-65 (62) ; tail, 52-55 (53) ; bill, 

 10.5-11 (10.5); tarsus, 19-21.5 (20.5). 



Range. — Subtropical Zone, Andes of Peru, south to the Urubamba 

 Valley, and north to the Zamora Valley, southern Ecuador. 



Remarks. — The only locality mentioned by von Tschudi in con- 

 nection with this species is the plantation San Pedro, near Lurin, 

 in the coast region of Lima, but this must have been a mistake, as 

 Doctor Hellmayr points out, since the bird is clearly one of the 

 Subtropical Zone. The word " citrongelb " used in the description 

 seems to indicate the present race, which is the most brightly colored 

 of all. Doctor Hellmayr, who has examined von Tschudi's type, says 

 that it agrees with "Bogota" skins, and with a male from Machay, 

 Ecuador. The latter is referable to B. tnstriatiis haezae^ while some 

 " Bogota " specimens approach this race. The tj'pe specimen in 

 question, courteously placed at m}^ disposal by the authorities of the 

 Neuchatel Museum, has faded somewhat, but is still yellov;er below 

 than birds from eastern Ecuador. Two specimens in the Warsaw 

 Museum from Ropaybamba and Auquimarca, respectively, and 

 which were mounted at one time, liave faded so as to be scar<^ely 

 distinguishable from haezae. Three skins from Chinchao, Peru, are 



