observed in the Gran Chaco. 225 



27. Cyanocorax ceruleus (Vieill.). 



Villa Concepcion, iu monte on western bank of river, 

 along with and nearly as unmerous as C. chrysops. 



W., Jan. 15, 21, 1897. Flocks of seven or eight in monte 

 round station. 



Fam. XI. Tyrannid.e. 



28. T^ENIOPTERA NENGETA (Lilin.). 



Villa Concepcion, near Caraya Vuelta, Oct. 23 ; W., 

 Nov. 2. Many observed sallying from the top twigs of trees 

 after the manner of T. irnpero. 



29. T^NIOPTERA DOMINICANA (Vicill.). 



W. 



30. TiENIOPTERA IRUPERO (Vicill.). 



In palmar on west bank of Paraguay River opposite Villa 

 Concepcion, Nov. 1896. 



W., Oct. 31, Nov. 2, 1897. Many along with T. nengeta 

 sallying after insects from the top twigs of trees. 



31. FlUVICOLA ALBIVENTRIS (Spix) . 



Villa Concepcion, Sept. 27; a good many by the water's 

 edge, Sept. 28 : very common about Villa Concepcion, 

 occurring singly or in pairs by every laguna. W., Nov. 1890. 



32. LlCHENOPS PERSPICILLATA (Cm.). 



W., May 7. 



33. Machetornis rixosa (Vieill.). 

 W., Nov. 12. 



34. Euscarthmus margaritaceiventer (D'Orb. et Lafr.). 

 W., Nov. 1896, Jan. 1897. Common in monte round 



house. 



35. Hapalocercus flaviventris (D'Orb. et Lafr.). 



W., Nov. 28. A specimen shot in the swamp by Mr 

 Budgett. 



36. PiTANGUS BOLiviANUs (Lafr.). 



Villa Concepcion, Oct. 1896. Very abundant. W., Nov. 

 J 896. 



SER. VIII. VOL. I. Q 



