Bullet 



A. M. N. H. 



Vol. XXXVI, Plate VI. 



Cauca River near Buga 



Note the treeless eastern slopes of the Western Andes. A fl( 

 of white Herons is feeding on the marsh. 

 (Tropical Zone; arid portion of Cauca-Magdalena Faiuia.) 



Forest on the Cauca River at Rio Frio 

 (Tropical Zone; a humid island in the arid portion of the Cauca-Magdalena Fauna.) 



