454 Dr. E. Lonnberg on Birds from 



• 42. Ceryle amazona (Latham). 



The only specimen observed was shot at San Luis on the 

 way to the Chaco in March 1902. Iris brown. 



13. Ceryle Americana (Gm.). 



San Luis, January 24th, 1902. Iris red -brown. 



14. Chlorostilbon aureiventris (d'Orb. et Lafr.). 

 San Luis, January 1902. 



15. Guira piririgua (Vieill.). 



A specimen shot at San Luis, January lGth, 1902, had on 

 the right side of the tail four white-tipped feathers, owing 

 to the fact that a new feather had been fully developed 

 before any of the old had been shed. Iris reddish yellow. 



-4-16. Coccyzus americanus (Linn.). 



Shot at San Luis, February 8th, 1902. Iris yellowish 

 brown, according to the label. 



17. PlCOLAPTES ANGUSTIROSTRIS (Vieill.). 



San Luis, February 1902. Iris brown. 



18. Siptornis striaticeps (d'Orb. et Lafr.). 

 Tulomosa, January 31st, 1902. Iris brown. 



Cap decidedly striated, especially in front. Flanks and 

 crissum washed with brownish (or greyish fulvous); three 

 proximal secondaries with a longitudinal rufous stripe 

 on the outer web. In coloration this bird approaches 

 Siptornis rujipeniris of Sclater and Salvin, but the measure- 

 ments are those of S. striaticeps, of which it is probably 

 only a variety, though perhaps a connecting-link between the 

 two forms. 



19. Siptornis orbignyi (Reichenb.). 



A specimen of this bird was shot at San Luis in February 

 1902. 



This bird was seen and observed daily by Mr. von Hofstcn 

 and other members of the Expedition while it was building a 

 very large nest of straws. A pair of Saltator laticlavius were 

 also often seen near the place, and the Saltator was observed 

 occasionally to enter the nest of the Siptornis. The two 

 birds were, however, not on friendly terms, but often fought 



