BIRDS OF NORTH AND MIDDLE AMERICA. 



195 



Adult female. —Length (skins), 126-136 (130); wing, 48.5-51 (49.9); 

 tail, 60-67.5 (62.9); culmen, 11-12.5 (11.7); tarsus, 17.5-19 (18.5); 

 middle toe, 13.« 



Southwestern Costa Rica (BuenosAires; Boruca, Paso Real, and Bar- 

 ranca, Boruca; Terraba); western Panama (Santa Fe de Veragua) ? ^ 



Synallaxis albescens (not of Temniinck) vSalvin, Proc. Zool. Soc. Lond., 1867, 143 

 (Santa Fe de Veragua, Panama; crit.). — Sclater, Proc. Zool. Soc. Lond., 

 1874, 9, part (Verdgua; monogr.); Cat. Biixls Brit. Mus., xv, 1890, 43, part 

 (Santa Fe de Veragua). — Salvin and Godman, Biol. Ceutr.-Am., Aves, ii, 

 1891, 147, part (Santa Fe de Verdgua). — Cherrie, Expl. Zool. Merid. Costa 

 Rica, 1893, 38 (Terraba and Buenos Aires, s. w. Costa Rica). 



[Syyiallaxis] albescens Sclater and Salvin, Nom. Av. Neotr., 1873, 63, part. — 

 Sharpe, Hand-list, iii, 1901, 54, part (Panama). 



Synallaxis albescens latitabunda Bangs, Auk, xxiv, July, 1907, 298 (Boruca, s. w. 

 Costa Rica; coll. E. A. and O. Bangs). — Carriker, Ann. Carnegie Mus., vi, 

 1910, 634 (s. w. Costa Rica; habits). 



SYNALLAXIS ALBESCENS HYPOLEUCA Ridgway. 



WHITE-BREASTED SYNALLAXIS. 



Similar to S. a. latitahunda but under parts (including chest) nearly 

 pure wliite (only the upper portion and sides of chest very faintly 

 shaded with pale brownish gray, passing into pale buffy brown or 

 light wood brown on sides and flanks and pale brownish buff on 

 under tail-coverts); general color of upper parts Ughter and more 

 buffy brown. 



a Four specimens. 



Locality. 



MALES. 



Eight adult males from Costa Rica 



Nine adult males {S. a. albigularis) from Colombia 



Five adult males (S. a. albigularis) from Venezuela 



Nine adult males (S. a. albigularis) from Trinidad 



Two adult males (S. a.nesiotis) from Margarita Island, Vene- 

 zuela 



One adult male (S. a. albescens) from Argentina 



FEMALES. 



Four adult females from Costa Rica 



Five adult females (S. a. albigularis) from Colombia 



Two adult females (S. a. albigularis) from Venezuela 



Three adult females (S. o. albigularis) from Trinidad 



One adult female (S. a. albigularis?) from British Guiana 



One adult female (S. a.nesiotis) from Margarita Island 



Wing. 



52.2 

 56.3 

 56.4 

 55.3 



54 

 53.5 



49.9 



55 



53.2 



53.3 



57 



55 



Middle 

 toe. 



12.9 

 14.1 

 13.8 

 13.6 



13.2 

 11.5 



13 



13.7 



13.5 



14.2 



13.5 



14.5 



b No Panamd specimens seen by me. 



