Contents— Continued 

 Notes 



PETERSON, CHARLES H, R BRUCE DUNCAN, HENRY C. SUMMERSON, and 

 BRIAN F. BE AL. Annual band deposition within shells of the hard clam, Mercenaria 

 mercenaria: consistency across habitat near Cape Lookout, North Carolina 671 



SULLIVAN, LORETTA E, DENNIS A. EMILIANI, and K. NEAL BAXTER. Stand- 

 ing stock of juvenile brown shrimp, Penaeus aztecus, in Texas coastal ponds 677 



THOMAS, DAVID H. A possible link between coho (silver) salmon enhancement and 

 a decline in central California Dungeness crab abundance 682 



FFLDKAMP, STEVEN D. The effects of net entanglement on the drag and power out- 

 put of a California sea lion, Zaloiphus califomiamts 692 



PARSONS, GLENN R. Notes on the life history of the catshark, Scyliorhinus 

 meadi 695 



LIBBY, DAVID A. A comparison of scale and otolith aging methods for the alewife, 

 Alosa pseudoharengus 696 



MAULE, ALEC G., and HOWARD F. HORTON. Probable causes of the rapid growth 

 and high fecundity of walleye, Stizostedion vitreum vitreum, in the mid-Columbia 

 River 701 



TAYLOR, D. M., R. G. HOOPER, and G. R ENNIS. Biological aspects of the spring 

 breeding migration of snow crabs, Chionoecetes opilio, in Bonne Bay, Newfoundland 

 (Canada) 707 



CREED, ROBERT P., JR. Feeding, diet, and repeat spawning of blueblack herring, Alosa 

 aestivalis, from the Chowan River, North Carolina 711 



Index 717 



Notices 



NOAA Technical Reports NMFS published during first 6 months of 1985. 



The National Marine Fisheries Service (NMFS) does not approve, recommend or en- 

 dorse any proprietary product or proprietary material mentioned in this publication. 

 No reference shall be made to NMFS, or to this publication furnished by NMFS, in 

 any advertising or sales promotion which would indicate or imply that NMFS approves, 

 recommends or endorses any proprietary product or proprietary material mentioned 

 herein, or which has as its purpose an intent to cause directly or indirectly the adver- 

 tised product to be used or purchased because of this NMFS publication. 



