ART. 7 REVISION OF THE GENUS BASILEUTEL'US TODD 29 



Remarks. — Azara's description, which is the basis of Vieillot's 

 name, is easily recognizable as applying to the present species. It 

 was figured later by D'Orbigny, and in 1838 received an independent 

 name from Swainson, based on specimens from Brazi^. Both 

 Biirmeister and von Pelzeln, of the earlier authors, record it from 

 that country, and a considerable number of specimens seem to have 

 found their way into collections, judging from the numerous refer- 

 ences in the literature. Our knowledge of its habits is derived 

 mainly from D'Orbigny, and from the recent account by Doctor 

 Wetmore, from which it appears that it is a ground bird, with a 

 walking gait. This suggests that it may not be so closely related 

 to the typical Basileuteri as its structural characters imply, and may 

 not be so far removed from Phaeothlypis. 



When Doctor Oberholser described his supposed race calus from 

 Paraguay he had for comparison only four old and faded specimens 

 fron an unspecified locality, but probably from the coast region of 

 Brazil. Since Paraguay is the accepted type-locality of leucohle- 

 pJmrides^ the name calus is a synonym in any event. The type of 

 cahis can be matched so closely by a series of fresh specimens from 

 Itatiaya that I cannot at all follow Doctor Hellmayr in recognizing 

 two races of this species, from the interior and the coast region 

 respectively. None of the characters he specifies hold good in the 

 series available, but are attributable to other causes than geographical 

 variation. 



Specvmens examiined. — Brazil: Neu Freiburg, 1; Therezopolis 

 (3,200 feet), Organ Mountains, 2; A]to Itatiaya (6,500-7,150 feet), 

 Brazil, 4; Mftcieiras (5,900 feet), Serra do Itatiaya, 4; Jundiahy, 

 1 ; Jacuhy, Rio Grande do Sul, 1 ; Sao Laurenco, Rio Grande do Sul, 1 ; 

 unspecified, 2. Uruguay : Castillos San Vicente, Rocha, 1 ; Rio CeboJ- 

 lati, Lazcano, Rocha, 1. Argentina: Las Palmaa^ Chaco, 1; Resis- 

 tencia, Chaco, 1. Paraguay: Sapucay, 1; Parana River, 1. Unspeci- 

 fied, 3. Total, 25. 



BASILEUTERUS GRISEICEPS Sclater and Salvin 



Basileutenis griseiceps Sclater and Sai,\t;n, Proc. Zool. Soc. London, 



1868, p. 166 (Carip^, Venezuela), p. 170 (orig. descr. ; type in coll. Brit. 



Mus.).— Shakpe, Cat. Birds Brit. Mus., vol. 10, 1885, p. 399 (Venezuela; 



descr.; refs.). — Chapman, Amer. Mus. Nov. No. 191, 192.5, p. 11 (Carapas, 



La Trinidad, and Mount Tunimiquire, Venezuela). 

 Chlorospwgus canipileus Chapman', Bull. Anier. Mus. Nat. Hist., vol. 12, 



1899, p. 153 (Los Palmales, Venezuela; oi"ig. descr.; type in coll. Amer. 



Mus. Nat. Hist). 

 Eemispmgus canipileus Shaepe, Hand-list Birds, vol. 5, 1899, p. 644 (ref. 



orig. descr.; range). 



Description. — Pileum dark neutral gray with a slight olivaceous 

 cast, the forehead darker, more blackish; sides of the head like the 



