PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 391 



those of Cinclidw or Dippers, at least so far as its habitat and manner 

 of flitting along the rocks of water-courses is concerned. Iris brown. 



Two specimens. 



:So. 101. $ ad. April 15. 



I^o. 290. 5 ad. April 29. 



7. Vireosylvia flavoviridis Cass. 

 Apjjareutly not very common. Iris red. 

 One specimen secured. 



No. 250. 9 ad. April 25. 



8. Hylophilus decurtatus (Bonap.). 



Common. Found in thick forest. Iris brown. 



Two specimens. 



No. 212. 9 . April 17. 



No. 273. 9 . April 28. 



9. Progne leucogastra Baird. 



Abundant. Shot in early morning out of the top of a very high tree 

 in an open field. Iris brown. 

 Oue specimen. 

 No. 101. $ ad. April 16. 



10. Tanagra cana diaconus (Less.). 



This Tanager seems to be pretty abundantly distributed throughout 

 Costa Rica. It is found in small flocks, and its beautiful blue plumage 

 renders it quite conspicuous. One of the fiercest and most stubbornly 

 l^rolonged bird- fights I ever saw was between two of this species. In- 

 deed it is quite noticeable for its quarrelsome disposition. 



One specimen from this locality. 



No. 239. S ad. April 21. 



11. Ramphocelus passerinii Bonap. 



Many specimens seen between San Jose and Punta Arenas, but hav- 

 ing no ammunition with me it was impossible to secure specimens. 



12. Embernagra superciliosa Salvin. 



Eather common. Found in open woods. Iris brown. 



Two specimens. 



No. 195. <?. (Breeding.) April 16. 



No. 291. <?. April 29. 



13. Spiza americana (Gm.). 



Only one large flock seen. They had settled upon a small tree* near 

 a cactus hedge, where they were literally gorging themselves upon a 

 small black and yellow worm. They all seemed to have fared sumptu- 

 ously, as the specimens killed were the fattest small birds I ever saw. 



