Bulletin A. M. N 



Vol. XXXVl. Plate XXIV. 



Alto Bonito, Rio Sucio 

 (Tropical Zone; Colombian-Paciflc Fauna.) 



Rio Cauca at Puerto Valdivia 



View looking north, near the southern limit of forest on the lower Cauca. The Central 



Andes arise from the right hand bank, the Western Andes from the left. At no 



other place do these ranges so closely approach each other. 



(Tropical Zone; Cauca-Magdalena Fauna.) 



