FAMILY FORMICARIIDAE 213 



Like Bangs and Barbour, I have found the series now available from 

 Panama similar to those from far distant Nicaragua, the type 

 locality. 



Typical M. t. torqiiata, of eastern Colombia, eastern Ecuador to 

 southern Venezuela, the Guianas and Brazil, has the wing bands 

 paler, with that on the underside of the wing white, and is duller, 

 less rufescent brown on the upper surface. 



FORMICARIUS ANALIS (d'Orbigny and Lafresnaye) : Black-faced 

 Ant-thrush, Gallito Hormiguero 



Figure 18 



Myothera analis d'Orbigny and Lafresnaye, Syn. Av., in Mag. Zool., vol. 7, 

 1837, p. 14. (Yucares and Chiquitos, Bolivia.) 



Medium size, with heavy body and short tail ; terrestrial ; throat 

 black ; side of head and neck chestnut. 



Description. — Length 165-185 mm. Plumage dense and compact. 

 Adult, sexes alike, crown and hindneck from rufous-brown and 

 chestnut-brown to nearly black, rest of upper surface brown, varying 

 from somewhat olive-brown to chestnut-brown ; lower rump and 

 upper tail coverts chestnut-brown to dull rufous-brown ; base of tail 

 brown, tip blackish slate, black, or almost wholly black ; suborbital 

 area, chin and throat black ; lores also black, but with a central spot 

 of white ; side of head behind eye and side of neck chestnut to 

 rufous-brown ; under surface gray, varying from light to dark, with 

 lower breast and abdomen paler, to nearly white ; under tail coverts 

 chestnut to rufous-brown ; under wing coverts bufif tipped with 

 sooty brown ; under surface of wing banded broadly with rufous. 



Juvenile, plumage softer; chin and upper throat dull white to 

 buff, with the feather tips dull sooty brown ; fore crown brown, 

 spotted lightly with black, changing posteriorly to dull black. 



In a slightly older stage the throat and upper foreneck are white, 

 slightly washed with rufous, and banded narrowly with dusky. 



From southern Mexico to northern Honduras, the populations of 

 this species have a narrow but distinct collar of rufous to chestnut 

 on the lower foreneck as a continuation of the brown on either side of 

 the neck. This is found in the races recognized as moniliger, pallidus, 

 and intermedins. Farther south in Central America from south- 

 eastern Honduras through eastern Nicaragua, Costa Rica, and 

 Panama into northern South America, the collar is not present, or in 

 southern Central America may be faintly and indistinctly indicated 

 by a few spots. 



