Sustaining Associates of THE SOCIETY OF NEMATOLOGISTS Bayer Corporation Agricultural Chemicals Division Kansas City, MO Dow AgroSciences Indianapolis, IN DuPont Crop Products San Jose, CA Pam Marrone Davis, CA Novartis Crop Protection, Inc. Vero Beach, FL Pest Pros, Inc. Plainfield, WI Seminis Vegetable Seeds, Inc. San Juan Bautista, CA Tomen Agro, Inc. San Francisco, CA Sustaining associate members help support The Society of Nematologists (SON) through their financial assistance, knowledge, expertise, and professional involvement in the science of nematology. For informa- tion about these companies or if you would like to become a sustaining associate member, contact the chairman of the SON Industry Committee or any member of the Executive Board. Membership in the Society of Nematologists is $50.00 U.S. for regular U.S. members, and $25.00 for U.S. students. For airmail delivery outside the United States, add $15.00 for countries in the Western Hemisphere or $30.00 for all other countries. Fifteen dollars ($15.00) of this amount is for a one-year subscription to the JOURNAL. Payment must be with a check drawn on a U.S. bank or by Visa or MasterCard. Add $2.00 for credit card transactions. The JOURNAL, SUPPLEMENT, and Nematology Newsletter (postage paid) are included in the membership dues for regular and student members. Emeritus members may purchase the JOURNAL at student rates. Subscription rates are $100.00 per year (nonmembers in the United States) and $115.00 (elsewhere). BACK ISSUES OF JOURNAL OF NEMATOLOGY Vols. 21–29 (1989–97). Price per issue includes postage and handling. Members: $10.00; Nonmem- bers: $40.00. Please indicate volumes desired and send check or money order to the Society of Nematologists, Inc., P.O. Box 1897, Lawrence, KS 66044-8897.