222 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



following a brief pause. He described it as melancholy in tone, with 

 a slight acceleration toward the end and a sudden stop. 



From information now available, mgricapillns seems in general 

 to replace analis. In our series of 1 1 specimens of destructiis from 

 the departments of Valle and Choco, Colombia, there is no indication 

 of hybridization with analis, listed as a possibility by Haffer (Amer. 

 Mus. Nov. 2294, 1967, p. 13). The two, while evidently closely 

 related, so far as known appear to have developed into distinct 

 species entities. 



Hartert (Nov. Zool., vol. 9, December 1902, p. 614) in an account 

 of the Black-headed Ant-thrush in Ecuador, remarks that "Two eggs, 

 said to belong to . . . destructiis, are white without gloss, more 

 pointed at one end, and measure 29^x22^ and 30^x22^ mm." 



FORMICARIUS RUFIPECTUS Salvin: Rufous-breasted Ant-thrush, 

 Gallito Hormiguero Pechicastafio 



Size medium ; larger than other ant-thrushes, with tawny breast. 



Description. — Length 180-200 mm. Adult male, crown and 

 hindneck dark chestnut, with feather bases dull black ; rest of upper 

 surface (except rump) dark olive; rump and upper tail coverts 

 reddish chestnut ; wings dark sooty brown ; tail dull black ; side of 

 head and throat black ; lower foreneck and upper breast chestnut, 

 changing on lower breast and abdomen to tawny ; under tail coverts 

 bright chestnut ; sides and flanks olive, in part indistinctly lined with 

 chestnut ; under wing coverts blackish olive mixed with rufous ; an- 

 terior bases of primaries cinnamon-bufif. 



Adult female, like male, but back and wings more slaty, under 

 surface paler. 



Immature, like female but with throat brownish black ; browner 

 on upper foreneck. 



The habits and nesting of this forest species as yet are unknown. 

 Two races are recorded from the Republic, one in the west, and 

 the other in Darien. 



FORMICARIUS RUFIPECTUS RUFIPECTUS Salvin 



Formicarius rnfipcctus Salvin, Proc. Zool. Soc. London, May 1866, p. 73, pi. 8. 

 ("Santiago de Veraguas," =^ Santa Fe, Veraguas.) 



Characters. — Breast darker chestnut ; sides and flanks darker ; 

 more brownish above. 



Measurements. — Males (5 from Veraguas and Costa Rica), wing 



