772 



Fishery Bulletin 91(4). 1993 



Lescrauwaet, Tony Luscombe, and Andrew Read for 

 assistance with field work in Peru. Peter van Bree, 

 Robert Clarke, Ronald Hardy, Linda Jones, William 

 Perrin, and Jan Stock provided comments which 

 greatly improved the manuscript. Research and travel 

 funds were gratefully received from the King Leopold 

 III Fund for Nature Research and Conservation, the 

 Whale and Dolphin Conservation Society, Van 

 Tienhoven Foundation, IUCN/UNEP, Greenpeace In- 

 ternational, Cetacean Society International, Rotary 

 Club Oudenaarde and Rotary International District 

 162. The Statgraphics program was donated by Steve 

 Dennison. 



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