of the Estancia Sta. Elena. 167 



other Finches. It is a shy bird and not easily observed, and 

 probably passes here only on migration. 



[Likewise a rare species. There are two Bolivian skins 

 in the Brit. Mus. See B. M. C. xii. p. 636.— P. L. S.] 



4. TiENioPTERA MURiNA (d'Orb. ct Lafr.) . (Arg. Orn. i. 

 p. 119.) 



A winter visitor, living about the plantation around the 

 house, where it is constantly seen perched on some slight 

 elevation, such as a low bush or tall weed, on the watch for 

 insects, which it catches on the flight. Sometimes, however, 

 it feeds on the ground for a lengthy period, in the manner 

 of Machetornis rixosa. 



5. Cnipolegus anthracinus, Heine. (Arg. Orn. i. 

 p. 126.) 



A female, March 22nd, 1896. Legs black ; iris black ; 

 beak black. 



A shy visitor in the winter- season, living amongst the 

 hedges or other thick plantation. 



6. Cnipolegus hudsoni, Scl. (Arg. Orn. i. p. 126.) 

 Two males, Oct. 3rd, 1895. Legs black; iris hazel; 



beak blue, tip black. 



A spring visitor, passing in migration and living among 

 the willow trees, whence it makes short flights after insects. 



7. Hapalocercus hollandi, Scl. (Ibis, 1896, p. 316.) 

 This little Tyrant, of which I sent a specimen in the previous 



collection, is a summer visitor, and breeds here, living in 

 pairs among the weeds and feeding on insects. Its flight is 

 undulating. Its cup-shaped nest, composed of fine dry 

 grass interwoven, without other material, is a very open 

 structure, so much so that one can see through it either 

 way. It is suspended from several weed-stalks by a few 

 spiders' cocoons. 



8. An^retes parulus (Kittl.). (Arg. Orn. i. p. 141.) 

 This is a summer visitor and breeder, living in pairs 



among the weeds. 



N 2 



