U. S. NATIONAL MUSEUM 



BULLETIN 133 PL. II 



Lowland Thickets near Laguna Castillos, Haunt of Brush Inhabit- 

 ing Birds That Here Have Outpost Colonies in the Pampas 



Near San Vicente, Uruguay January 31, 1921 



Summit of the Cerro Navarro, a Granite Outlier of the Hill 

 Formation of Northern Uruguay 



San Vicente, Uruguay, January 28, 1921 



