392 BULLETIN 133, UNITED STATES NATIONAL MUSEUM 



same point, September 21 (female). In Chaco and Formosa the bird 

 was common. It was a ground-haunting species that ranged with 

 other small birds in the undergrowth of forests, or, in morning 

 and evening, ventured out into the more open cover of scattered 

 bushes at the borders of the savannas. The birds were curious and 

 were readily enticed to view from dense coverts. The striking jet- 

 black males, that occasionally showed a flash of white from the 

 shoulder in flight, seemed more shy than the cinnamon-colored 

 females. 



In a male taken July 9 the maxilla and tip of the mandible were 

 black ; base of mandible pale neutral gray ; iris dull brown ; tarsus 

 brownish black; underside of toes washed with yellow- 



HEMITHRAUPIS GUIRA GUIRA (Linnaeus) 



Motacilla guira Linnaeus, Syst. Nat., ed. 12, vol. 1, 1766, p. 335. (Eastern 

 Brazil."") 



An adult male was taken at Kilometer 25, west of Puerto Pinasco, 

 Paraguay, September 1, 1920, and a female on the Cerro Lorito, on 

 the eastern bank of the Rio Paraguay, opposite Puerto Pinasco, on 

 September 30. These two agree in appearance with skins from 

 Matto Grosso and Rio de Janeiro. Male specimens from southern 

 Paraguay (Sapucay), representing H. g. fosteri Sharpe, have the 

 rump and breast slightly darker, but only one has the broadened 

 yellow markings on the superciliary and forehead supposed to dis- 

 tinguish this form. This subspecies is apparently poorly marked. 



Though the generic term H ernithrawpis is here used for this 

 tanager, I see little save diiference in color pattern to differentiate 

 it from Nemosia of Vieillot. 



These birds frequented the tops of tall trees in heavy forest. They 

 were observed gathering nesting material September 30. The fe- 

 male had the maxilla and tip of mandible blackish brown number 

 3; rest of mandible cinnamon buff; iris bone brown; tarsus deep 

 green-blue gray. 



PIRANGA FLAVA (Vieillot) 



SaUator Flavus Vieillot, Encyc. Meth., vol. 2, 1822, p. 791. (Paraguay.) 



This tanager was fairly common in forested areas. It was ob- 

 served at Resistencia, Chaco, Jul}^ 8 and 10, 1920; Las Palmas, 

 Chaco, July 30 and 31; Riacho Pilaga, Formosa, August 18; For- 

 mosa, Formosa, August 24; Kilometer 200, west of Puerto Pinasco, 

 Paraguay, September 25 ; and Tapia, Tucuman, April 9, 1921. The 

 four skins preserved include male and female from Resistencia, July 

 8 and 10 ; female from the Laguna Wall, 200 kilometers west of Puerto 



so See Hellmayr, Nov. Zool., 1908, p. 30. 



