106 BULLETIN 117, UNITED STATES NATIONAL MUSEUM. 



(3639) GEOTHLYPIS AEQUINOCTIALIS CUCULLATA (Latham). 



Sylvia cucuUata Latham, Ind. Orn., vol. 2, 1790, p. 528 (no locality given; Bra- 

 bourne and Chubb give "Brazil"; I suggest adding Rio Janeiro). 



Geothlypis canicapilla assimilis Berlepsch and Stolzmann, Ornia, 1906, p. 75, 

 Chirimoto, Peru; specimens from Santa Ana and Maranura). 



Our specimens have smaller bills and longer tails than most exam- 

 ples from eastern Brazil, but resemble in size specimens from Chapada, 

 Matto Grosso. I can find no diagnostic differences in color between 

 our Peruvian birds, a large series from Chapada and seven adult 

 males from Sao Paulo, Rio, and Bolivia, and consequently do not 

 consider assimilis of Berlepsch and Stolzmann worthy of recognition. 



Idma, 2 females (Oct. 22, breeding) ; Santa Ana, 1 male, 2 females. 



(3647) WILSONIA CANADENSIS (Linnaeus). 



Musdcapa canadensis Linnaeus, Syst. Nat., vol. 1, 1766, p. 327 (Canada). 

 Sylvania canadensis Berlepsch and Stolzmann, Ornis, 1906, p. 76, Idma (1 

 female, July). 



(3549) MYIOBORUS VEETICALIS (d'Orbigny and Lufresnaye). 



Setophaga verticalis d'ORBiGNY and Lafresnaye, Syn. Av., jit. 1, 1837, p. 53 

 ("Ayupaya, Boliviana").— ScLATERand Salvin, Proc. Zool. Soc, 1876, p. 16 

 (Huiro, Potrero). 



Common in the Subtropical Zone. Peruvian and Bolivian speci- 

 mens agree and have somewhat more white in the tail than Colombian 

 specimens. 



Idma, 2 males, 2 females; San Miguel Bridge, 3 males, 4 females, 1 ?. 



(3637) MYIOBORUS MELANOCEPHALUS MELANOCEPHALUS (Tschndi). 



Setophaga melanocephala Tschudi, Wieg. Arch., vol. 1, 1844, p. 276 (Peru). 



Common in the Subtropical Zone. 

 San Miguel Bridge, 7; Torontoy, 7. 



(3663a) BASILEUTERUS LUTEOVIRIDIS SUPERCILIARIS Chapman. 



Basileuterus luteoviridis superciliaris Chapman, Proc. Biol. Soc. Wash., vol. 32, 

 1919, p. 265 (above Torontoy, 14,000 feet, Urubamba Canyon, Peru). 



Subspecijic characters. — Similar to Basileuterus luteoviridis luteo- 

 viridis (Bonaparte) of Colombia, but averaging slightly smaller, with 

 a longer bdl, rictal bristles more developed; the entire upper parts 

 decidedly browner, the yellow superciliary much broader, brighter, 

 in some specimens broader even than in '' Myiothlypis" nigrocristatus, 

 when it leaves an olive-green area on the crown about equal to the 

 black area in the crown of that species. Differing from Basileuterus 

 luteoviridis striaticeps Cabanis, and from B. I. signatus Berlepsch and 

 Stolzmann, through the lack of even a trace of black on the forehead 

 and crown, which is exactly concolor with the back; from specimens 

 of signatus which lack black on the crown, it differs as it does from 



