406 



ZOOLOGY 



Photograph by E. R. Sanborn, N. Y. Zob'L Soc. 



FIG. 181. Branick paca (Dinomys branicki) ; a rare rodent from Peru, 

 long known only from a single specimen. 



Photograph by E. R. Sanborn, N. Y. Zool. Soc. 

 FIG. 182. American beaver (Castor canadensis). 



