UNITED STATES DEPARTMENT OF THE INTERIOR, Oscar L. Chapman, Secretary 

 FISH AND WILDLIFE SERVICE, Albert M. Day, Director 



POSTLARVAL NEOTHUNNUS 

 MACROPTERUS, AUXIS THAZARD, AND 



EUTHYNNUS LINEATUS FROM THE 

 PACIFIC COAST OF CENTRAL AMERICA 



By Giles W. Mead 

 Illustrations by Walter B. Schwarz 



FISHERY BULLETIN 63 



From Fishery Bulletin of the Fish and Wildlife Service 



VOLUME 52 



UNITED STATES GOVERNMENT PRINTING OFFICE • WASHINGTON : 1951 



For sale by the Superintendent of Documents, U. S. Government Printing Office, Washington 25, D. C. 



Price 15 cents 



