FISHERY BULLETIN: VOL. 74, NO. 1 



showed a significant difference at the 1% level, 

 F = 3.72, between the two species. 



The Atlantic specimens of S. tristis had counts 

 for four characters that were closer to those of S. 

 clarkei than were counts of these characters from 

 other geographic areas. These differences in 

 counts between Atlantic S. tristis and S. clarkei 

 were as follows: dorsal fin rays 1.0 (12.0 vs. 13.0), 

 anal fin rays 0.6 (13.4 vs. 14.0), pectoral fin rays 

 2.1 (15.0 vs. 12.9), and vertebrae 3.1 (31.1 vs. 34.2). 

 Differences of two in pectoral-fin ray counts and 

 three for vertebrae are much greater than the 

 regional variability found among specimens of 

 S. tristis. 



ACKNOWLEDGMENTS 



We are grateful to the following individuals 

 and institutions for the loan of specimens: T. 

 Clarke, Hawaiian Institute of Marine Biology, 

 Kaneohe, Hawaii; G. Kreftt, Institut fiir 

 Seefischerei, Hamburg, Germany; R. H. Rosen- 

 blatt, M. A. Barnett, J. Copp, and D. Dockins, 

 Scripps Institution of Oceanography, La Jolla, 

 Calif; B. G. Nafpaktitis, University of South- 

 ern California, Los Angeles, Calif; R. K. Johnson, 

 Field Museum of Natural History, Chicago, 

 111.; W. Nellen, Institut fiir Meereskunde, 

 Kiel, Germany; R. Schoknecht and M. M. Dick, 

 Museum of Comparative Zoology, Cambridge, 

 Mass.; R. H. Gibbs and W. R. Taylor, Division 

 of Fishes, National Museum of Natural His- 

 tory, Washington, D.C. We give special thanks to 

 H. G. Moser, Southwest Fisheries Center, Na- 

 tional Marine Fisheries Service, La Jolla, and to 

 C. L. Hubbs, Scripps Institution of Oceanography, 

 for their advice and criticisms and to R. Schok- 

 necht for examining the types of S. whoi Mead 

 and S. dispar Garman. 



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