FIGURES 



No . Page 



1 Subareas into which the Gulf of Mexico was divided for 

 comparison of offshore plankton data 2 



2 Length frequencies by percent of larvae taken by a 

 conventional half-meter silk net towed at one knot 

 compared with those taken by the G-III sampler towed 



at 4 to 5 knots during Cruise 4-2A in January 1952 3 



3 Location of plankton tows made during Cruise 1-1A, 



April-May 1951. Numbers identify stations 5 



4 Location of plankton tows made during Cruise 2-1B, 



June 1951. Numbers identify stations 7 



5 Location of plankton tows made during Cruise 3-1C, 



August 1951. Numbers identify stations 10 



6 Location of plankton tows made during Cruise 4-2C, 



January 1952. Numbers ^identify stations 15 



7 Location of plankton tows made during Cruise 5-2C, 



May- June 1952. Numbers identify stations 19 



8 Location of plankton tows made during Cruise 7 (Special), 

 November 1952. Numbers identify stations 27 



9 Location of plankton tows made during Cruise 8, 

 February 1953, and Cruise 9 (Special), March 1953. 



Numbers identify stations 30 



10 Location of plankton tows made during Cruise 10- 2B, 



April 1953. Numbers identify stations 35 



11 Location of plankton tows made during Cruise 11, 



May-June 1953. Numbers identify stations 42 



