If the behavior of otariids at sea is similar to that 

 exhibited by the entangled sea lion, then drowning 

 may be another more immediate cause of mortality. 

 Twisting and rolling could foul the foreflippers and 

 prevent the animal from swimming. This seems par- 

 ticularly likely if it became caught in a larger net. 

 Additionally, because the net was so tightly wrap- 

 ped around the sea lion's neck, necrosis of the skin 

 tissue and an open wound may have occurred within 

 a matter of hours to a few days. Constant swimming 

 could continue to tighten the net. Although several 

 authors (Scordino and Fisher fn. 1) have speculated 

 that neck wounds indicate a period of entanglement 

 longer than 4 mo, these observations suggest that 

 beached animals with open wounds may have become 

 tangled only a few days prior to sighting. 



Acknowledgments 



The sea lion was made available for this research 

 by L. H. Cornell, Sea World of San Diego. The 

 assistance provided by Phil Thorson and Tferrie 

 Williams in feeding and training the sea lion is grate- 

 fully acknowledged and appreciated. C. Fowler, J. 

 Graham, G. Kooyman, and T Williams provided 

 useful comments on the manuscript. 



This study was supported by NOAA grant 

 82ABC-02743 from the National Marine Mammal 

 Laboratory to G. L. Kooyman. 



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Steven D. Feldkamp 



Scripps Institution of Oceanography 

 Physiological Research Laboratory A-004 

 La Jolla, CA 92093 



Present address: Long Marine Laboratory 

 University of California at Santa Cruz 

 Santa Cruz, CA 9506Jt 



NOTES ON THE LIFE HISTORY OF 

 THE CATSHARK, SCYLIORHINUS MEADI 



The catshark, Scyliorhinus meadi (family Scylio- 

 rhinidae) is a rare, poorly known species, easily iden- 

 tified by the eight dark saddle-like blotches along the 

 dorsal surface Springer (1966) first described S. 

 meadi and Springer and Sadowski (1970) assigned 

 it to subspecies status of S. retifer. In Springer's 

 (1979) revision of the family, it was again given 

 species status. At present only 10 immature 

 specimens of 5. meadi have been collected, seven 

 males (180-490 mm in length), two females (235 and 

 385 mm in length), and one 190 mm specimen of 

 unknown sex. This paper reports on the collection 

 of an additional specimen of S. meadi and provides 

 valuable life history information. 

 During a cruise aboard the RV Delaware II on 5 



FISHERY BULLETIN: VOL. 83, NO. 4, 1985. 



695 



