Bulletin A. M. N. H. 



Vol. XXXVI. Pl.vte XXXIII 



;>^l^ife, 



Rio N EtiHO Canon near JMcjntkhedondo 

 A scene near the western limit of arborescent vegetation on tlie Rio Neii;ro. Trail at tlie left. 

 (Junction of Tropical and Subtropical Zones.) 



