ART. 7 EEVISIOX OF THE GENUS BASILEUTEEUS TODD 31 



white, with a light grayish wash, and the sides and flanks shaded 

 with olive brown; crissum cream buff; feet pale (in skin). 



Individuals not fully mature have the nape and sides of the head 

 (the superciliaries in particular) washed with greenish like the back, 

 and the greater wing-coverts edged with rusty. The black lateral 

 crown-strij)es are not so sharply defined. 



MeasuTements. — Male: Wing, 67-72 (average, 68.5); tail, 59-63 

 (60.7) : bill, 11-12 (11.5) ; tarsus, 23-24 (23.7). Female (eight speci- 

 mens) : Wmg, 63-66 (64.5) ; tail, 50-60 (57.5) ; bill, 10.5-12 (11) ; tar- 

 sus, 21-23 (22). 



Range. — Andes of southern Ecuador and northwestern Peru, in 

 the Subtropical Zone. 



Remarks. — A few of the specimens examined show a trace of 

 yelloAV on the median under parts, but in no case is this color so 

 strongly developed as in the race orientalis. The series in general 

 agree well with a topotype from Jima, Ecuador, in the collection of 

 the United States National Museum. The range of the typical race is 

 somewhat restricted, and until quite recently very few specimens were 

 known. The species appears to be most nearjiy allied to B. coronatus., 

 having the same head pattern and general coloration, but differs from 

 that form in its whitish instead of yellow under parts, in which 

 respect it approaches B. leucohlejyharides. 



Speehnens examined. — Ecuador: "Guayaquil," 1; Jima, 1; 

 Govinda. 1; Zaruma (6,000 feet). Oro, 2; El Chiral (5,350 feet), 

 Oro, 3; Loja (7,000 feet), 4; Taraguacocha (9,750 feet), Oro, 2; 

 Salvias (3,600 feet). Oro, 5. Peru: El Tambo (9.400 feet), Piura, 

 2; Palambla (3,900-6,500 feet), Piura. 6; Lomo Santo (5,000 feet), 

 lower Maranon Valley, 2. Total, 29. 



BASILEUTEEUS CASTANEICEPS ORIENTALIS Chapman 



Basileuterns castaneiceps (not of Sclater and Salvin) Taczanowski and 

 VON Berlepsch, Proc. Zool. Soc. London, 1885, p. 74 (Machay and San 

 Rafael, Ecuador). — GoooFEaxow. Ibis, 1901, p. 315 (Baeza, Ecuador). 



Basileuterus castaneiceps orientalis Chapman, Amer. Mus. Nov. No. 143, 

 1924, p. 8 (Mount Sumaco [type locality] and Baeza, Ecuador; orig. 

 descr. ; type in coll. Amer. Mus. Nat. Hist. ) . 



Svhs'peci'fic characters. — Similar to B. castaneiceps castaneiceps of 

 southern Ecuador, but slightly larger; upper parts brighter, less 

 brownish olive green (between dark citrine and olive green) ; lateral 

 croAvn stripes and transocular stripes broader; and under parts 

 darker, more grayish, and with more yellow wash on the abdomen 

 and flanks ; crissum also more decidedly yellow. 



Measurements. — Male: Wing, 69-74 (average, 72); tail, 61-66 

 (63.5); bill, 11-12 (11.5); tarsus, 21.5-24.5 (22.5). Female (five 



