Vol. 33, pp. 71-76 December 30, 1920 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



DESCRIPTIONS OF APPARENTLY NEW SOUTH 

 AMERICAN BIRDS. 



BY W. E. CLYDE TODD. 



Recent explorations in French Guiana and the lower Amazon 

 by Mr. Samuel M. Klages in the interests of the Carnegie 

 Museum have brought to light a number of apparently new 

 birds, descriptions of which are presented herewith, while a 

 few additional forms are described from other regions as the 

 indirect result of comparisons with this new material. Three 

 new subspecies of birds from the Santa Marta region are also 

 characterized, making sixteen new names in all in the present 

 paper, which is the eighth of the series to appear in these 

 Proceedings. As before, the author's acknowledgments are 

 due to Dr. Harry C. Oberholser for help and advice. Measure- 

 ments are in millimeters, and the names of colors are mainly 

 from Mr. Ridgway's "Color Standards and Color Nomencla- 

 ture." 



Myospiza aurifrons meridionalis, subsp. nov. 



Similar to Myospiza aurifrons aurifrons (Spix) of northern Brazil, but 

 general coloration paler, the upper parts more buffy, less grayish, with 

 the streaking less distinct. 



Type, No. 38,417, Collection Carnegie Museum, adult male; RioSurutu, 

 Bolivia, September 6, 1910; Jose Steinbach. 



Brachyspiza capensis argentina, subsp. nov. 



Similar in general to Brachyspiza capensis capensis of Guiana and Brazil, 

 but averaging larger, with the bill more slender ; the upper parts, wing- 

 edgings, etc.* duller, less rufescent; and the median crown-stripe broader. 

 Wing (type), 71; tail, 63; exposed culmen, 11.5. 



Type, No. 31,241, Collection Carnegie Museum, adult male; Rio Santiago 

 (near Buenos Aires), Argentina, October 14, 1908; Jose Steinbach. 



14— Proc. Biol. Soc. Wash., Vol. 33, 1920. (71) 



