416 



BULLETIN 133, UNITED STATES NATIONAL MUSEUM 



able southward extension in its known range, and I have seen a male 

 taken by D. S. Bullock, July 29, 1922, at Jujuy. Through W. E. 

 Clyde Todd, of the Cartiegie Museum, I have been permitted to 

 examine the type of B. c. hypoleuca, two additional specimens from 

 the type locality, and two others from Guanacos, Province of Cor- 

 dillera, Bolivia. The present form differs from B. c. argentina 

 in more rufescent dorsal surface, with the dark longitudinal stripes 

 extended forward practically to the brown neck collar. Below 

 hypoleuca is whiter with little or no gray on the breast, and with 

 the lateral underparts brighter, more buffy in color. 



At Tapia, Tucuman, from April 6 to 13, 1921, these birds were 

 common in weed-grown areas scattered through the dry, scrubby 

 forest, or in weed patches that bordered fields and low thickets. 

 It is possible that the number of residents in this region had been 

 augmented by the arrival of migrants from the higher levels of the 

 mountains a few kilometers westward, as it was usual to find them 

 in flocks that contained nearly 100 individuals. Though a part 

 were in fresh fall plumage, others were in ragged molt. Their 

 flocks often were found in company with C oryphospingus and 

 SaltatHcula. In sjDite of their disreputable feathers, males sang 

 regularly, and I saw one, more exuberant than others, rise to give 

 a flight song. One male and three females collected on April 6, 

 8, and 9 offer the following measurements: 



In the city of Tucuman, BrachyspiBa were recorded in song on 

 April 1. Above Tafi Viejo, on April 17, they were found on the 

 higher, more open slopes of the Sierra San Xavier, in little flocks 

 that fed on the ground among growths of composites, or rested in 

 the pleasant warmth of the sun at the borders of thickets of alder. 



BRACHYSPIZA CAPENSIS MELLEA Wetmore 



Brachyspiza capensis tnellea Wetmork, Proc. Biol. Soc. WasTiington, vol. 

 35, Mar. 20, 1922, p. 39. (80 kilometers west of Puerto riiia.sco, 

 Paraguay. ) 



This pallid form, seemingly the Brachyspisa of the interior of the 

 central and northern Chaco, was found at the Riacho Pilaga, For- 

 mosa, and near the ranch at Kilometer 80, west of Puerto Pinasco, 



