FAMILY TROGLODYTIDJE 



cc. Sides of the head, throat and chest not bright 

 chestnut. 



d. Sides of head and neck black conspicuously 

 streaked with white; sometimes a few white 

 spots on wing coverts; under parts mainly 

 white Henicorhina p. prostheleuca 



dd. General color dark brown, paler and barred 

 with dusky below; tail excessively short. . . . 

 Microcerculus philomela luscinia 



bb. Tail medium. 



c. Very small, length about in mm. (4.30 in.); 

 general color grayish brown; wings, tail and 



under tail coverts barred with dusky 



Troglodytes musculus inquietus 



cc. Larger, length not under 124 mm. (4.90 in.). 

 d. Throat black spotted with white; breast and 

 abdomen tawny rufous; under tail coverts 



white barred with dusky 



Pheugopedius hyperythrus 



dd. Throat white or whitish. 



e. Throat white, or throat and chest white in 

 striking contrast to color of remaining 

 under parts. 



f. Throat and chest pure white; remaining 

 under parts abruptly black with narrow 

 indistinct white bars on abdomen and 



under tail coverts 



Pheugopedius fasciato-ventris albigularis 



ff. Throat pure white; top of head and hind- 

 neck black; remaining under parts 



abruptly chestnut. . . 



' .1 Thryophilus c. castaneus 



ee. Throat white, remaining under parts whitish 

 or passing to tawny buff; a conspicuous 

 white line over eye and ear coverts; a 

 streak of brown in continuation of eye. 



f. Remaining under parts shading to tawny 

 buff; above pale dull brown, the wings 

 and tail distinctly barred with black . . . 

 Thryophilus g. galbraithi 



ff. Remaining under parts mainly whitish. 

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