FAMILY TROGLODYTIDAE 



57 



Superciliary indistinct 15 



13. Smaller, total length 95-100 mm. 



Timberline Wren, Troglodytes browni browni. p. 108 

 Larger, total length 125-155 mm 14 



14. Uppersurface bright rufous ; side of head barred. 



Rufous-and-white Wren, Thryothorus rufalbus castanonotus. p. 78 

 Uppersurface, crown especially, grayish brown ; side of head, below postocular 

 stripe, white. Plain Wren, Thryothorus modestus. p. 72 



15. Superciliary indistinct, total length 108-115 mm. 



House Wren, Troglodytes aedon. p. 101 

 Superciliary indistinct, total length 120-135 mm. 



Buff-breasted Wren, Thryothorus leucotis. p. 68 



16. Throat brown 17 



Throat black and white 18 



17. Throat and breast rich chestnut; rest of body dark brown. 



Song Wren, Cyphorhinus aradus. p. 117 

 Throat pale cinnamon, fading to buff on breast. 



Mountain Wren, Troglodytes solstitialis. p. 105 



18. Back barred black and white. 



Band-backed Wren, Campylorhynchus zonatus costaricensis. p. 64 

 Back solid brown 19 



19. Back bright chestnut ; breast gray ; tail very short. 



Gray-breasted Wood- Wren, Henicorhina leucophrys. p. 114 

 Back duller brown, breast not gray; tail of normal proportions 20 



20. Breast streaked black and white. 



Stripe-breasted Wren, Thryothorus thoracicus. p. 81 

 Breast unstreaked 21 



21. Breast tawny-rufous. 



Rufous-breasted Wren, Thryothorus rutilus hyperythrus. p. 99 

 Breast gray-brown. 



Stripe-throated Wren, Thryothorus leucopogon grisescens. p. 83 



DONACOBIUS ATRICAPILLUS BRACHYPTERUS Madarasz, 

 Black-capped Donacobius, Paralauta de Agua 



Figure 7 



Donacobius brachypterus Madarasz, Orn. Monatsb. vol. 21, Feb. 1913, p. 22. (Ara- 

 taca, Magdalena, Colombia.) 



Medium size; slender body, buff on lower surface, dark above, with 

 crown black; long white-tipped tail. 



Description. — Length 210-235 mm. Adult (sexes alike), crown, 

 side of head and hindneck black; back and greater wing coverts some- 

 what dull brown; rump and upper tail coverts brownish buff; wings 

 dull black, edged with dull brown; a white spot across base of primaries; 

 tail black, tipped broadly with white, except on the central pair; entire 



