lOO 



Figure 15. — Distribution of standing crop (standardized volume) of 

 total crustaceans taken in night micronekton hauls on cruises made 

 along the Pacific coasts of Mexico and Guatemala. Code letters, 

 explained in the bottom panel, indicate the group, if any, which 

 represented half or more by volume of the catch of crustaceans. 



U.S. FISH AND WILDLIFE SERVICE 



