atures within 30-min quadrangle areas and the 

 prescribed depth zones for the period of record 

 regardless of season. For the most part, the 

 isotherms were drawn directly to the data, but 

 smoothing and interpolation were necessary to 

 eliminate segregated thermal patches resulting 

 from a paucity of observations in specific quad- 

 rangle areas and depth zones. Although in most 

 areas the coverage was such that the temper- 

 ature extremes given cannot be considered as 

 all encompassing, the charts do give a general 

 picture of the maximum range of temperature 

 to which resident populations of benthic ani- 

 mals in various regions could be subjected. 



ACKNOWLEDGMENTS 



We thank Miss E. H. Schroeder for access 

 to the temperature data collection at the Woods 

 Hole Oceanographic Institution; Mrs. K. Payne 

 for writing the computer program for data re- 

 duction; Mrs. M. Cory, Mrs. T. Crabtree, and 

 Mr. S. R. Nickerson for assistance in tabulation ; 

 and Dr. R. L. Wigley and Dr. T. J. M. Schopf 

 for critical reading of the manuscript. 



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