366 BULLETIN 133, UNITED STATES NATIONAL MUSEUM 



their presence indicated only by their jaylike calls. April 17 another 

 small band was encountered in one of the dense groves on the upper 

 slopes of Sierra San Xavier, above Tafi Viejo, Tucuman, at an 

 altitude of about 2,100 meters. These remained concealed among 

 heavy branches and slipped away down the steep slopes to more 

 distant quarters. The habits in general are similar to those of the 

 typical form. 



Family CYCLARHIDAE 



CYCLARHIS GUJANENSIS VIRmiS (Vieillot) 



Saltator viridis, Vieillot, Tabl. Enc. Meth., vol. 2, 1828, p. 793. (Para- 

 guay. ) 



The three skins of this species preserved include an adult male 

 from Las Palmas, Chaco, July 31, 1920; adult male, Riacho Pilaga, 

 Formosa, August 11; and immature female, Tapia, Tucuman, April 

 12, 1921. The two males have a wing measurement of 82.5 and 79.5 

 mm., respectively, and the female, with wing not quite grown, 78.5 

 mm. The southern form, to which these birds belong, is distin- 

 guished from C. g. cearensis Baird by larger size. 



An adult male, taken July 31, had the maxilla and tip of mandible 

 cinnamon drab, changing to neutral gray at tip of culmen; base of 

 mandible deep green-blue gray; iris ochraceous buff with a tinge of 

 ochraceous orange; tarsus and toes gray number 7. 



These birds inhabited low trees in brush-grown pastures or at the 

 borders of barrancas, where they hopped slowly and deliberately 

 about among the dense branches with erect carriage, examining 

 twigs and leaves for food. That the strong, heavy bill was of 

 service was shown when one tore and pulled at a strip of insect- 

 infested bark, using much strength in its efforts. The song, heard 

 August 23 near Formosa, Formosa, was a pleasant warble, somewhat 

 accented, so that it did not seem monotonous though constantly re- 

 peated. From its tone I had supposed that it came from some finch 

 and was astonished to trace it to a pepper shrike. 



The Toba Indians in P^ormosa called this species si trih. 



CYCLARHIS OCHROCEPHALA Tschudi 



Cyclarhis ochrocephala Tschudi, Arch, fiir Naturg., 1845, pt. 1, p. 362. 

 (Southern Brazil and Buenos Aires.) 



The first of these birds observed was an adult female taken at 

 Berazategui, Buenos Aires, on June 20, 1920, in a thicket near the 

 Rio de la Plata. In southern Uruguay the species was common, as 

 two adult males and one immature bird of the same sex were shot 

 at San Vicente on January 28 and 30, 1921, and adult and imma- 

 ture males on February 6 and 8. The species was observed at Rio 

 Negro, Uruguay, from February 17 to 19. The adult female from 



