4HARVARD UNIVERSITYLibrary of theMuseum ofComparative Zoology1993VOL 35MALACOLOGIAMalacologyInternational Journal ofMalacologiadeRevista InternacionalMalacologieJournal International deZeitschriftMalakologischeInternationalet»"^ MCZLIBRARYNO. 1 1993VOL 35,JUL 2 1 1993HARVARDUNIVERSITYMALACOLOGIAMalacologynternational Journal ofMalacologiaRevista Internacional deMalacologieJournal International deZeitschriftInternationale MalakologischeMALACOLOGIAEditor-in-Chief:GEORGE M. DAVISEditorial and Subscription Offices:Department of MalacologyThe Academy of Natural Sciences of Philadelphia1900 Benjamin Franklin ParkwayPhiladelphia, Pennsylvania 19103-1195, U.S.A.Co-Editors:EUGENE COAN CAROLJONESCalifornia Academy of Sciences Denver, COSan Francisco, CAAssistant Managing Editor:CARYL HESTERMANAssociate Editors:JOHN B. BURCHANNE GISMANNUniversity of MichiganMaadiAnn ArborEgyptMALACOLOGIA is published by the INSTITUTE OF MALACOLOGY, the Sponsor Membersof which (also serving as editors) are:KENNETH J. BOSS JAMES NYBAKKENComparative Zoology Moss Landing Manne LaboratoryMuseum ofCaliforniaCambridge, MassachusettsJOHN BURCH, President CLYDE F. E. ROPERSmithsonian InstitutionMELBOURNE R. CARRIKERWashington, D.C.University of Delaware, LewesW. D. RUSSELL-HUNTERGEORGE M. DAVISSyracuse University, New YorkSecretary and TreasurerSHI-KUEI WUCAROLE S. HICKMANUniversity of Colorado Museum, BoulderUniversity of California, ...
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