The Postlarvae of Scyllarides Astori and Evibacus Princeps of the Eastern Tropical Pacific (Decapoda, Scyllaridae)

THE POSTLARVAE OF SCYLLARIDES ASTORI AND EVIBACUS PRINCEPS OF THE EASTERN TROPICAL PACIFIC (DECAPODA, SCYLLARIDAE) BY MARTIN W. JOHNSON Scripps Institution of Oceanography, University of California (San Diego), La Jolla, California 92037, U.S.A. INTRODUCTION Only two species of scyllarid lobster (slipper or shovelnose lobster) occur in the Eastern Tropical Pacific. Of these, Scyllaride.r a.rtori Holthuis, 1960, is found mainly in the Galapagos Archipelago and to lesser extent in the southern half of the Gulf of California. Evibacu.r princeps S. I. Smith, 1869, occurs along the coast from Peru to well within the Gulf of California. A biological survey in the