382 Bulletin American Museum of Natural History. [Vol. XXXVI, 



Six specimens from southwestern Colombia are typical of this Ecua- 

 dorian form (compared with 16 specimens from Ecuador) and in their 

 bright rufous crown show no indication of intergrading with A. b. daguce. 



Barbacoas, 5; Buenavista, Nariiio, 1. 



(2072) Anoplops bicolor daguse {Hellm.). 



Gymnopiihys bicolor daguce Hellm., Bull. B. O. C, XVI, 1906, p. 83 (near Buena- 

 ventura, Col.). 



Anoplops bicolor dagv^ Hellm., P. Z. S., 1911, p. 1170 (N6vita; Juntas de Ta- 

 mand). 



Restricted to the Tropical Zone of the Pacific coast and thus far known 

 only from Buenaventura northward to the head of the Atrato. Speci- 

 mens from Barbacoas, as above recorded, are typical of aequatorialis, while 

 those from the lower Atrato are referable to ^. &. bicolor. 



Bagado, 1; La Vieja, 1; Baudo, 1; Novita, 4; Noanamd, 1. 



(2072a) Anoplops bicolor bicolor (Lawr.). 



Pithys bicolor Lawr., Ann. Lyo. N. H. N. Y., VII, 1862, p. 484 (Lion Hill, Pana- 

 ma). 



Specimens frond both sides of the lower Atrato, in comparison with 

 Lawrence's type, are clearly referable to bicolor rather than to dagum. No 

 less than three well-marked forms of this species are therefore found in the 

 Tropical Zone of the Pacific coast. Their characters are clearly defined 

 by Hellmayr (P. Z. S. 1911, p. 1171). 



Rio Salaqui, 1 ; Alto Bonito, 3. 



(2084) Myrmeciza melanoceps {Spix). 



Thamnophilus melanoceps Spix, Av. Bras., II, 1825, p. 28, pi. xxxix, fig. 1 

 ("in Sylvis Parre"). 



Three males and three females from Amazonian Colombia agree with 

 descriptions of this species, of which I have seen no authentic specimens. 

 The species appears not to have been previously recorded from Colombia. 



Florencia, 5; La Morelia, 1. 



(2091) Myrmeciza maculifer maculifer {Hellm.). 



Myrmelastes exsul maculifer Hellm., Nov. Zool., XIII, 1906, p. 340 (Paramba, 

 n. w. Ecuador); P. Z. S. 1911, p. 1169 (Sipi; Rio Cajon; N6vita; Noanamd). 



