1917.] Chapman, Distribution of Bird-life in Colombia. 415 



San Antonio, 1; Cerro Munchique, 1; Miraflores, 3; Salento, 2; Sta. 

 Elena, 3; Rio Toche, 2; San Agustin, 1; Fusugasuga, 2; El Roble, 2. 



(2499) Sclerurus brunneus Set. 

 Sclerurus brunneus Scl., P. Z. S., 1857, p. 17 ('Bogotd')- 



Met with only in Amazonian Colombia. Doubtless, as Hellmajrr states 

 (Nov. Zool., XIV, 1907, p. 58), a representative of S. caudacutus. 

 La Morelia, 4; Floreneia, 1. 



(2501) Sclerurus albigularis albigularis Swainson. 



Sclerurus albigularis Swainson, Birds of Brazil, 1841, pi. 78 ( ?); Scl. & 



Salv., p. Z. S., 1868, p. 630 (Caracas). 



Seven specimens from Buena Vista, above Villavicencia, agree closely 

 with seven from Cristobal Colon on the Paria Peninsula, and are doubtless, 

 therefore, typical of this species for which, following Hellmayr (Nov. Zool., 

 XIII, 1906, p. 28), I accept Sclater and Salvin as the describers and Caracas 

 as the type-locality. Four Trinidad specimens are smaller, with shorter 

 bills, and average brighter above. 



Buena Vista, 7. 



(2504) Sclerurus mexicanus obscurior Hart. 



Sclerurus mexicanus obscurior Hart., Nov. Zool., VIII, 1901, p. 370, (Lita, 

 n. w. Ecuador). 



f Sclerurus caudacutus Scl. & Salv., P. Z. S., 1879, p. 520 (Frontino). 



Sclerurus mexicanus andinus Chapm., Bull. A. M. N. H., XXXIII, 1914, p. 622 

 (Buena Vista, Col.). 



Found, with one exception, in the Subtropical Zone of the Western 

 and Eastern, and doubtless also, the Central Andes. Specimens collected 

 by Miller and Boyle on the Western Andes are not separable from Buena 

 Vista specimens and in connection with three recently acquired birds 

 from Tacarcuna indicate that although the eastern birds average lighter in 

 color than the western ones, there is but one valid form of this species in 

 Colombia. 



For this I accept the name applied by Hartert to the Ecuador race. Of 

 this I have but one specimen. It has the rump duller than the remaining 

 birds in the series, but this, Hartert's description leads me to believe, is not 

 a constant character. 



As a whole these birds chiefly differ from true mexicanus in being darker 



