60 



G. PILLERI 



obvious. The buffeos are mostly seen close to the bank, sometimes almost in the 

 reeds or water hyacinths. They spout once with the melon showing for an instant 

 out of the water. Then the dorsal régions appear although the tail does not corne 

 out of the water at ail. It is quite obvious that the noise of the motor disturbs the 





FOREST 





BUSHES 





PLANTATIONS 



7? 



REEDS 



v r . v v. 

 - v_- v- 



STRANDED FLOATING PLANTS COVERED WITH REEDS 









HILL 





BUILDING 



1 



ANCHORAGE 



FlG. 1. 



Sketch (not proportional) of Puerto Almacén (Rio Ibaré, Beni, Bolivia). In February, 1' 6 

 three Inias were seen daily within the circled areas. 



