450 Dr. E. Lonnberg on Birds from 



23. Upucerthia dumetoria GeofFr. et d'Orb. 



Only one specimen was observed, shot at Moreno in 

 December, 1901. It was feeding on insects. 



24. Leptasthenura ^egithaloides (Kittl.). 



Mr. von Hofsten remarks, as others have done before him, 

 that this bird in its behaviour recalls the Long-tailed Tit 

 of Europe. A pair had their nest, containing three white 

 eggs, in a stone wall at Moreno in December, 1901. 



25. Phacellodomus striaticeps (d'Orb. et Lafr.). 



A nest of this bird was found at Moreno in December, 

 1901. It was composed of small sticks, and was 150 cm. 

 high and 40 cm. broad. It contained three white eggs. 



26. Agriornis andicola d'Orb. 



A single specimen, observed at Moreno, was shot on 

 December 4th, 1901. It was feeding on insects. 



27. Muscisaxicola rupivertex d'Orb. et Lafr. 



This bird is stated to be rather common in small flocks on 

 the moist meadows at Moreno. 



28. Centrites oreas Sclater & Salvin. 



Iris dark brown. Two examples, male and female, must 

 belong to this species, as the former has the inner web of 

 the primaries pale cinereous, almost white, and similarly 

 the female has the inner web of the primaries pale with 

 a cinnamomeous tinge. Otherwise they agree with the 

 description of C. niger in the Cat. of Birds (xiv. p. 62), but 

 the above-mentioned characteristics are said to be the dis- 

 tinguishing features of C. oreas. The bird, stated to belong 

 to the fauna of Bolivia and Peru, is thus recorded as an 

 inhabitant of the Cordillera of Argentina. 



At Moreno it was not uncommon in suitable localities. 

 It was usually seen in pairs on the moist meadows, where it 

 hopped about catching insects. 



—29. Atticora cyanoleuca (Vieill.). 



Iris dark brown. This Swallow nests in holes in the 

 barrancas at the same places as Bolborhynchus, and in 

 company with it. It sometimes uses the burrows made 

 by the Parrakeet. It was not numerous at Moreno. 



