410 BULLETIN 133, UNITED STATES NATIONAL MUSEUM 



In conformation of bill and wing this species is closely similar to 

 the type of Buarremon, B. torquatus^ and as it differs slightly in 

 structural characters from the type of Atlapetes, where it has iDeen 

 placed in recent years, it is here located in Buarremon. Differences- 

 between Buarremon and Atlapetes appear intangible, and careful 

 study of all the species may indicate that the two groups merge. A 

 realignment of the species concerned seems necessary at least. 



ARREMON POLIONOTUS POLIONOTUS Bonaparte 



A)-remon poUonotus "Pucheran " Bonaparte, Consp. Av., voL 1, 1850, p. 488. 

 (Corrientes, Argentina.) 



A specimen of the present species was taken at Resistencia, Chaco,. 

 July 9, 1920, others were seen at Las Palmas, Chaco, July 14 and 

 31, and still others at the Riacho Pilaga, Foi-mosa, on August 8 

 and 18 (when two w^ere taken). The skin from Resistencia is from 

 a short distance from the type locality. A. p. devillei Des Murs, 

 from Corumba and eastern Bolivia to central Brazil, is marked by 

 slightlj^ paler dorsal surface and possibly by narrower pectoral 

 band.i'' 



Chubb ^^ has placed Arre7non callistus Oberholser, from Sapucay,. 

 Paraguay, in the sjmonomy of A. poUonotus. The type of callistus 

 differs, however, in that the wing coverts are like the back except 

 for a faint wash of olive green on the lesser coverts in which it is 

 distinct from all poUonotus seen. The difference may be individual 

 or the specimen may represent a true form. 



These birds were found in dense brush, often near clearings, where 

 they fed on or near the ground. Their call was a faint tseet. One 

 of unknown sex, taken at Resistencia, when first killed had the 

 greater part of the maxilla black ; mandible and sides of maxilla for 

 posterior three-fourths cadmium orange; iris very dark brown; 

 tarsus benzo brown ; toes, including claws on second to fourth, mouse 

 gray; hind claw vinaceous buff. The pale color of the claw of the 

 hallux is easily seen in fresh skins, but the distinction disappears 

 when toes and tarsi bleach to yellowish brown as the specimen ages. 



CORYPHOSPINGUS CUCULLATUS ARAGUIRA (Vieillot) 



Fringilla araguira Vieillot, Hist. Nat. Ois. Chant., fasc. 5, 1808," p. 52*. 

 (not 52), pi. 28* (not 28). (Corrientes.i^) 



Skins of C oryphospingus cucuJlatus from Argentina are distinctly 

 grayer on the dorsal surface than those from Brazil and more north- 



" See Hellmayr, Nov. Zool., vol. 13, 1006, p. 313. 



i=Ibis, 1910, p. 631. 



"See Sherborn, Incl. Anim., pt. 3, 1923, p. 421. 



" Thoush Vieillot mentions Guiana in connection witli this bird he based his de- 

 scription largely on Azara's account of the araguira (Apunt. Hist. Nat. Pax. Paraguay, 

 vol. 1, 1802, pp. 499-508). Azara states that he did not see the species south of 30° 

 S. lat. The type-locality is hereby restricted to Corrientes, on the Rio Parana, 

 which was included in Paraguay in the days of Azara. 



