ART. 7 EEVISIOIS- OF THE GENUS BASILEUTEELTS TODD 59 



obviously duller below than the rest of the series and are, in fact, 

 close to haezae, but have whiter upper throats. Thev rnay represent 

 a slightly differentiated local race. 



Specimens examined. — Peru: Idma (5,000 feet), 4; Chaupe (6,100 

 feet), 3; Utcuyacu (4,800 feet). Junin, 4; Chelpes (7,300 feet), Junin, 

 5; Chinchao (5,700 feet), 3; Ropaybamba, 1; Auquimarca, 1; Santa 

 Eosa (3,900 feet), Lower Marafion Valley, 1; Lomo Santo (5,000 

 feet), Lower Marafion Valley, 1; San Felipe (5,900 feet), Rio Huan- 

 cabamba, 1; unspecified, 1 (the type). Ecuador: Sabanilla (5,700 

 feet), Rio Zamora. Loja, 2. Total, 27. 



BASILEUTERUS TEISTRIATUS BAEZAE Chapman 



Basileuterus trisfrintus (not MyiodiOctes tristriatus von Tschudi) Tao- 

 ZANOWSKI and von Berlepsch, Proc. Zool. Soc. Loudon. 1885, pp. 68, 74 

 (Macliay and Mapoto, Ecuador). — Sharpe, Cat. Birds Brit. Mus., vol. 10, 

 1885, p. 385, excl. syn. (same localities; descr.). 



Basileuterus tristriatus baezae Chapman, Amer. Mus. Nov. No. 143, 1924, 

 p. 5 (Baeza [type locality] and Macas, Ecuador; orig. descr.; type in 

 coll. Amer. Mus. Nat. Hist.), p. 7 (Baeza, lower Sumaco, and Macas 

 region, Ecuador), p. 8 (mea.s.) ; Bull. Aaier. Mus. Nat. Ilist.. vol. 55, 1926, 

 p. 600 (same localities; reprint orig. descr.; refs.). 



Suhspecifc charocters. — Similar to Basileuterus tristriatus tristri- 

 atus^ but yellow tinge of median crown-stripe averaging darker, and 

 yellow of under parts duller (between pinard j^ellow and picric yel- 

 low), and with more dark shading or mottling, giving a generally 

 darker and duller effect in series when compared. 



Bleasurements. — Male (eight specimens) : Wing, 62-67 (average, 

 65); tail, 52-58 (55); bill, 10-11.5 (10.5); tarsus, 20-23 (21.5). 

 Female (eight specimen,s) : Wing, 61-67 (62.5) ; tail, 50-54 (52) ; 

 bill, 10-11 (10.5) ; tarsus, 20-20.5 (20.3). 



Range. — Subtropical Zone, Andes of eastern Ecuador. 



Remarks. — This race is intermediate in its characters between true 

 tristriatus and auricularis^ but since it has a distinct range of its own 

 it is well entitled to .separate consideration. The specimens taken at 

 Machay and ^lapoto by M. Stolzmann over 40 years ago belong 

 here, but the form was characterized from a series of freshly collected 

 skins received by the American Museum from the Sumaco region of 

 eastern Ecuador. 



Specimens examined. — Ecuador: Baeza, 7; lower Sumaco, 8; San 

 Jose cle Sumaco, 1 ; Macas region, 1. Total, 17. 



BASILEUTERUS TRISTRIATUS AURICULARIS Sharpe 



Basileuterus hwittatus (not Musclcapa hivittata Lafresnaye and D'Orbigny) 

 Salvin, Cat. Coll. Strickland. 1882, p. 94, excl. syn. ("Bogota," 

 Colombia). 



